9302 lines · cpp
1//===-- Clang.cpp - Clang+LLVM ToolChain Implementations --------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "Clang.h"10#include "Arch/ARM.h"11#include "Arch/LoongArch.h"12#include "Arch/Mips.h"13#include "Arch/PPC.h"14#include "Arch/RISCV.h"15#include "Arch/Sparc.h"16#include "Arch/SystemZ.h"17#include "Hexagon.h"18#include "PS4CPU.h"19#include "ToolChains/Cuda.h"20#include "clang/Basic/CLWarnings.h"21#include "clang/Basic/CodeGenOptions.h"22#include "clang/Basic/HeaderInclude.h"23#include "clang/Basic/LangOptions.h"24#include "clang/Basic/MakeSupport.h"25#include "clang/Basic/ObjCRuntime.h"26#include "clang/Basic/Version.h"27#include "clang/Config/config.h"28#include "clang/Driver/Action.h"29#include "clang/Driver/CommonArgs.h"30#include "clang/Driver/Distro.h"31#include "clang/Driver/InputInfo.h"32#include "clang/Driver/SanitizerArgs.h"33#include "clang/Driver/Types.h"34#include "clang/Driver/XRayArgs.h"35#include "clang/Options/OptionUtils.h"36#include "clang/Options/Options.h"37#include "llvm/ADT/ScopeExit.h"38#include "llvm/ADT/SmallSet.h"39#include "llvm/ADT/StringExtras.h"40#include "llvm/BinaryFormat/Magic.h"41#include "llvm/Config/llvm-config.h"42#include "llvm/Frontend/Debug/Options.h"43#include "llvm/Object/ObjectFile.h"44#include "llvm/Option/ArgList.h"45#include "llvm/ProfileData/InstrProfReader.h"46#include "llvm/Support/CodeGen.h"47#include "llvm/Support/Compiler.h"48#include "llvm/Support/Compression.h"49#include "llvm/Support/Error.h"50#include "llvm/Support/FileSystem.h"51#include "llvm/Support/Path.h"52#include "llvm/Support/Process.h"53#include "llvm/Support/YAMLParser.h"54#include "llvm/TargetParser/AArch64TargetParser.h"55#include "llvm/TargetParser/ARMTargetParserCommon.h"56#include "llvm/TargetParser/Host.h"57#include "llvm/TargetParser/LoongArchTargetParser.h"58#include "llvm/TargetParser/PPCTargetParser.h"59#include "llvm/TargetParser/RISCVISAInfo.h"60#include "llvm/TargetParser/RISCVTargetParser.h"61#include <cctype>62 63using namespace clang::driver;64using namespace clang::driver::tools;65using namespace clang;66using namespace llvm::opt;67 68static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {69 if (Arg *A = Args.getLastArg(options::OPT_C, options::OPT_CC,70 options::OPT_fminimize_whitespace,71 options::OPT_fno_minimize_whitespace,72 options::OPT_fkeep_system_includes,73 options::OPT_fno_keep_system_includes)) {74 if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&75 !Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {76 D.Diag(clang::diag::err_drv_argument_only_allowed_with)77 << A->getBaseArg().getAsString(Args)78 << (D.IsCLMode() ? "/E, /P or /EP" : "-E");79 }80 }81}82 83static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {84 // In gcc, only ARM checks this, but it seems reasonable to check universally.85 if (Args.hasArg(options::OPT_static))86 if (const Arg *A =87 Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))88 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)89 << "-static";90}91 92/// Apply \a Work on the current tool chain \a RegularToolChain and any other93/// offloading tool chain that is associated with the current action \a JA.94static void95forAllAssociatedToolChains(Compilation &C, const JobAction &JA,96 const ToolChain &RegularToolChain,97 llvm::function_ref<void(const ToolChain &)> Work) {98 // Apply Work on the current/regular tool chain.99 Work(RegularToolChain);100 101 // Apply Work on all the offloading tool chains associated with the current102 // action.103 for (Action::OffloadKind Kind : {Action::OFK_Cuda, Action::OFK_OpenMP,104 Action::OFK_HIP, Action::OFK_SYCL}) {105 if (JA.isHostOffloading(Kind)) {106 auto TCs = C.getOffloadToolChains(Kind);107 for (auto II = TCs.first, IE = TCs.second; II != IE; ++II)108 Work(*II->second);109 } else if (JA.isDeviceOffloading(Kind))110 Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());111 }112}113 114static bool115shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,116 const llvm::Triple &Triple) {117 // We use the zero-cost exception tables for Objective-C if the non-fragile118 // ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and119 // later.120 if (runtime.isNonFragile())121 return true;122 123 if (!Triple.isMacOSX())124 return false;125 126 return (!Triple.isMacOSXVersionLT(10, 5) &&127 (Triple.getArch() == llvm::Triple::x86_64 ||128 Triple.getArch() == llvm::Triple::arm));129}130 131/// Adds exception related arguments to the driver command arguments. There's a132/// main flag, -fexceptions and also language specific flags to enable/disable133/// C++ and Objective-C exceptions. This makes it possible to for example134/// disable C++ exceptions but enable Objective-C exceptions.135static bool addExceptionArgs(const ArgList &Args, types::ID InputType,136 const ToolChain &TC, bool KernelOrKext,137 const ObjCRuntime &objcRuntime,138 ArgStringList &CmdArgs) {139 const llvm::Triple &Triple = TC.getTriple();140 141 if (KernelOrKext) {142 // -mkernel and -fapple-kext imply no exceptions, so claim exception related143 // arguments now to avoid warnings about unused arguments.144 Args.ClaimAllArgs(options::OPT_fexceptions);145 Args.ClaimAllArgs(options::OPT_fno_exceptions);146 Args.ClaimAllArgs(options::OPT_fobjc_exceptions);147 Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);148 Args.ClaimAllArgs(options::OPT_fcxx_exceptions);149 Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);150 Args.ClaimAllArgs(options::OPT_fasync_exceptions);151 Args.ClaimAllArgs(options::OPT_fno_async_exceptions);152 return false;153 }154 155 // See if the user explicitly enabled exceptions.156 bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,157 false);158 159 // Async exceptions are Windows MSVC only.160 if (Triple.isWindowsMSVCEnvironment()) {161 bool EHa = Args.hasFlag(options::OPT_fasync_exceptions,162 options::OPT_fno_async_exceptions, false);163 if (EHa) {164 CmdArgs.push_back("-fasync-exceptions");165 EH = true;166 }167 }168 169 // Obj-C exceptions are enabled by default, regardless of -fexceptions. This170 // is not necessarily sensible, but follows GCC.171 if (types::isObjC(InputType) &&172 Args.hasFlag(options::OPT_fobjc_exceptions,173 options::OPT_fno_objc_exceptions, true)) {174 CmdArgs.push_back("-fobjc-exceptions");175 176 EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);177 }178 179 if (types::isCXX(InputType)) {180 // Disable C++ EH by default on XCore and PS4/PS5.181 bool CXXExceptionsEnabled = Triple.getArch() != llvm::Triple::xcore &&182 !Triple.isPS() && !Triple.isDriverKit();183 Arg *ExceptionArg = Args.getLastArg(184 options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,185 options::OPT_fexceptions, options::OPT_fno_exceptions);186 if (ExceptionArg)187 CXXExceptionsEnabled =188 ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||189 ExceptionArg->getOption().matches(options::OPT_fexceptions);190 191 if (CXXExceptionsEnabled) {192 CmdArgs.push_back("-fcxx-exceptions");193 194 EH = true;195 }196 }197 198 // OPT_fignore_exceptions means exception could still be thrown,199 // but no clean up or catch would happen in current module.200 // So we do not set EH to false.201 Args.AddLastArg(CmdArgs, options::OPT_fignore_exceptions);202 203 Args.addOptInFlag(CmdArgs, options::OPT_fassume_nothrow_exception_dtor,204 options::OPT_fno_assume_nothrow_exception_dtor);205 206 if (EH)207 CmdArgs.push_back("-fexceptions");208 return EH;209}210 211static bool ShouldEnableAutolink(const ArgList &Args, const ToolChain &TC,212 const JobAction &JA) {213 bool Default = true;214 if (TC.getTriple().isOSDarwin()) {215 // The native darwin assembler doesn't support the linker_option directives,216 // so we disable them if we think the .s file will be passed to it.217 Default = TC.useIntegratedAs();218 }219 // The linker_option directives are intended for host compilation.220 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||221 JA.isDeviceOffloading(Action::OFK_HIP))222 Default = false;223 return Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,224 Default);225}226 227/// Add a CC1 option to specify the debug compilation directory.228static const char *addDebugCompDirArg(const ArgList &Args,229 ArgStringList &CmdArgs,230 const llvm::vfs::FileSystem &VFS) {231 std::string DebugCompDir;232 if (Arg *A = Args.getLastArg(options::OPT_ffile_compilation_dir_EQ,233 options::OPT_fdebug_compilation_dir_EQ))234 DebugCompDir = A->getValue();235 236 if (DebugCompDir.empty()) {237 if (llvm::ErrorOr<std::string> CWD = VFS.getCurrentWorkingDirectory())238 DebugCompDir = std::move(*CWD);239 else240 return nullptr;241 }242 CmdArgs.push_back(243 Args.MakeArgString("-fdebug-compilation-dir=" + DebugCompDir));244 StringRef Path(CmdArgs.back());245 return Path.substr(Path.find('=') + 1).data();246}247 248static void addDebugObjectName(const ArgList &Args, ArgStringList &CmdArgs,249 const char *DebugCompilationDir,250 const char *OutputFileName) {251 // No need to generate a value for -object-file-name if it was provided.252 for (auto *Arg : Args.filtered(options::OPT_Xclang))253 if (StringRef(Arg->getValue()).starts_with("-object-file-name"))254 return;255 256 if (Args.hasArg(options::OPT_object_file_name_EQ))257 return;258 259 SmallString<128> ObjFileNameForDebug(OutputFileName);260 if (ObjFileNameForDebug != "-" &&261 !llvm::sys::path::is_absolute(ObjFileNameForDebug) &&262 (!DebugCompilationDir ||263 llvm::sys::path::is_absolute(DebugCompilationDir))) {264 // Make the path absolute in the debug infos like MSVC does.265 llvm::sys::fs::make_absolute(ObjFileNameForDebug);266 }267 // If the object file name is a relative path, then always use Windows268 // backslash style as -object-file-name is used for embedding object file path269 // in codeview and it can only be generated when targeting on Windows.270 // Otherwise, just use native absolute path.271 llvm::sys::path::Style Style =272 llvm::sys::path::is_absolute(ObjFileNameForDebug)273 ? llvm::sys::path::Style::native274 : llvm::sys::path::Style::windows_backslash;275 llvm::sys::path::remove_dots(ObjFileNameForDebug, /*remove_dot_dot=*/true,276 Style);277 CmdArgs.push_back(278 Args.MakeArgString(Twine("-object-file-name=") + ObjFileNameForDebug));279}280 281/// Add a CC1 and CC1AS option to specify the debug file path prefix map.282static void addDebugPrefixMapArg(const Driver &D, const ToolChain &TC,283 const ArgList &Args, ArgStringList &CmdArgs) {284 auto AddOneArg = [&](StringRef Map, StringRef Name) {285 if (!Map.contains('='))286 D.Diag(diag::err_drv_invalid_argument_to_option) << Map << Name;287 else288 CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));289 };290 291 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,292 options::OPT_fdebug_prefix_map_EQ)) {293 AddOneArg(A->getValue(), A->getOption().getName());294 A->claim();295 }296 std::string GlobalRemapEntry = TC.GetGlobalDebugPathRemapping();297 if (GlobalRemapEntry.empty())298 return;299 AddOneArg(GlobalRemapEntry, "environment");300}301 302/// Add a CC1 and CC1AS option to specify the macro file path prefix map.303static void addMacroPrefixMapArg(const Driver &D, const ArgList &Args,304 ArgStringList &CmdArgs) {305 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,306 options::OPT_fmacro_prefix_map_EQ)) {307 StringRef Map = A->getValue();308 if (!Map.contains('='))309 D.Diag(diag::err_drv_invalid_argument_to_option)310 << Map << A->getOption().getName();311 else312 CmdArgs.push_back(Args.MakeArgString("-fmacro-prefix-map=" + Map));313 A->claim();314 }315}316 317/// Add a CC1 and CC1AS option to specify the coverage file path prefix map.318static void addCoveragePrefixMapArg(const Driver &D, const ArgList &Args,319 ArgStringList &CmdArgs) {320 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,321 options::OPT_fcoverage_prefix_map_EQ)) {322 StringRef Map = A->getValue();323 if (!Map.contains('='))324 D.Diag(diag::err_drv_invalid_argument_to_option)325 << Map << A->getOption().getName();326 else327 CmdArgs.push_back(Args.MakeArgString("-fcoverage-prefix-map=" + Map));328 A->claim();329 }330}331 332/// Add -x lang to \p CmdArgs for \p Input.333static void addDashXForInput(const ArgList &Args, const InputInfo &Input,334 ArgStringList &CmdArgs) {335 // When using -verify-pch, we don't want to provide the type336 // 'precompiled-header' if it was inferred from the file extension337 if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)338 return;339 340 CmdArgs.push_back("-x");341 if (Args.hasArg(options::OPT_rewrite_objc))342 CmdArgs.push_back(types::getTypeName(types::TY_ObjCXX));343 else {344 // Map the driver type to the frontend type. This is mostly an identity345 // mapping, except that the distinction between module interface units346 // and other source files does not exist at the frontend layer.347 const char *ClangType;348 switch (Input.getType()) {349 case types::TY_CXXModule:350 ClangType = "c++";351 break;352 case types::TY_PP_CXXModule:353 ClangType = "c++-cpp-output";354 break;355 default:356 ClangType = types::getTypeName(Input.getType());357 break;358 }359 CmdArgs.push_back(ClangType);360 }361}362 363static void addPGOAndCoverageFlags(const ToolChain &TC, Compilation &C,364 const JobAction &JA, const InputInfo &Output,365 const ArgList &Args, SanitizerArgs &SanArgs,366 ArgStringList &CmdArgs) {367 const Driver &D = TC.getDriver();368 const llvm::Triple &T = TC.getTriple();369 auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,370 options::OPT_fprofile_generate_EQ,371 options::OPT_fno_profile_generate);372 if (PGOGenerateArg &&373 PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))374 PGOGenerateArg = nullptr;375 376 auto *CSPGOGenerateArg = getLastCSProfileGenerateArg(Args);377 378 auto *ProfileGenerateArg = Args.getLastArg(379 options::OPT_fprofile_instr_generate,380 options::OPT_fprofile_instr_generate_EQ,381 options::OPT_fno_profile_instr_generate);382 if (ProfileGenerateArg &&383 ProfileGenerateArg->getOption().matches(384 options::OPT_fno_profile_instr_generate))385 ProfileGenerateArg = nullptr;386 387 if (PGOGenerateArg && ProfileGenerateArg)388 D.Diag(diag::err_drv_argument_not_allowed_with)389 << PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();390 391 auto *ProfileUseArg = getLastProfileUseArg(Args);392 393 if (PGOGenerateArg && ProfileUseArg)394 D.Diag(diag::err_drv_argument_not_allowed_with)395 << ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();396 397 if (ProfileGenerateArg && ProfileUseArg)398 D.Diag(diag::err_drv_argument_not_allowed_with)399 << ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();400 401 if (CSPGOGenerateArg && PGOGenerateArg) {402 D.Diag(diag::err_drv_argument_not_allowed_with)403 << CSPGOGenerateArg->getSpelling() << PGOGenerateArg->getSpelling();404 PGOGenerateArg = nullptr;405 }406 407 if (TC.getTriple().isOSAIX()) {408 if (Arg *ProfileSampleUseArg = getLastProfileSampleUseArg(Args))409 D.Diag(diag::err_drv_unsupported_opt_for_target)410 << ProfileSampleUseArg->getSpelling() << TC.getTriple().str();411 }412 413 if (ProfileGenerateArg) {414 if (ProfileGenerateArg->getOption().matches(415 options::OPT_fprofile_instr_generate_EQ))416 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +417 ProfileGenerateArg->getValue()));418 // The default is to use Clang Instrumentation.419 CmdArgs.push_back("-fprofile-instrument=clang");420 if (TC.getTriple().isWindowsMSVCEnvironment() &&421 Args.hasFlag(options::OPT_frtlib_defaultlib,422 options::OPT_fno_rtlib_defaultlib, true)) {423 // Add dependent lib for clang_rt.profile424 CmdArgs.push_back(Args.MakeArgString(425 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));426 }427 }428 429 if (auto *ColdFuncCoverageArg = Args.getLastArg(430 options::OPT_fprofile_generate_cold_function_coverage,431 options::OPT_fprofile_generate_cold_function_coverage_EQ)) {432 SmallString<128> Path(433 ColdFuncCoverageArg->getOption().matches(434 options::OPT_fprofile_generate_cold_function_coverage_EQ)435 ? ColdFuncCoverageArg->getValue()436 : "");437 llvm::sys::path::append(Path, "default_%m.profraw");438 // FIXME: Idealy the file path should be passed through439 // `-fprofile-instrument-path=`(InstrProfileOutput), however, this field is440 // shared with other profile use path(see PGOOptions), we need to refactor441 // PGOOptions to make it work.442 CmdArgs.push_back("-mllvm");443 CmdArgs.push_back(Args.MakeArgString(444 Twine("--instrument-cold-function-only-path=") + Path));445 CmdArgs.push_back("-mllvm");446 CmdArgs.push_back("--pgo-instrument-cold-function-only");447 CmdArgs.push_back("-mllvm");448 CmdArgs.push_back("--pgo-function-entry-coverage");449 CmdArgs.push_back("-fprofile-instrument=sample-coldcov");450 }451 452 if (auto *A = Args.getLastArg(options::OPT_ftemporal_profile)) {453 if (!PGOGenerateArg && !CSPGOGenerateArg)454 D.Diag(clang::diag::err_drv_argument_only_allowed_with)455 << A->getSpelling() << "-fprofile-generate or -fcs-profile-generate";456 CmdArgs.push_back("-mllvm");457 CmdArgs.push_back("--pgo-temporal-instrumentation");458 }459 460 Arg *PGOGenArg = nullptr;461 if (PGOGenerateArg) {462 assert(!CSPGOGenerateArg);463 PGOGenArg = PGOGenerateArg;464 CmdArgs.push_back("-fprofile-instrument=llvm");465 }466 if (CSPGOGenerateArg) {467 assert(!PGOGenerateArg);468 PGOGenArg = CSPGOGenerateArg;469 CmdArgs.push_back("-fprofile-instrument=csllvm");470 }471 if (PGOGenArg) {472 if (TC.getTriple().isWindowsMSVCEnvironment() &&473 Args.hasFlag(options::OPT_frtlib_defaultlib,474 options::OPT_fno_rtlib_defaultlib, true)) {475 // Add dependent lib for clang_rt.profile476 CmdArgs.push_back(Args.MakeArgString(477 "--dependent-lib=" + TC.getCompilerRTBasename(Args, "profile")));478 }479 if (PGOGenArg->getOption().matches(480 PGOGenerateArg ? options::OPT_fprofile_generate_EQ481 : options::OPT_fcs_profile_generate_EQ)) {482 SmallString<128> Path(PGOGenArg->getValue());483 llvm::sys::path::append(Path, "default_%m.profraw");484 CmdArgs.push_back(485 Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));486 }487 }488 489 if (ProfileUseArg) {490 SmallString<128> UsePathBuf;491 StringRef UsePath;492 if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))493 UsePath = ProfileUseArg->getValue();494 else if ((ProfileUseArg->getOption().matches(495 options::OPT_fprofile_use_EQ) ||496 ProfileUseArg->getOption().matches(497 options::OPT_fprofile_instr_use))) {498 UsePathBuf =499 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue();500 if (UsePathBuf.empty() || llvm::sys::fs::is_directory(UsePathBuf))501 llvm::sys::path::append(UsePathBuf, "default.profdata");502 UsePath = UsePathBuf;503 }504 auto ReaderOrErr =505 llvm::IndexedInstrProfReader::create(UsePath, D.getVFS());506 if (auto E = ReaderOrErr.takeError()) {507 auto DiagID = D.getDiags().getCustomDiagID(508 DiagnosticsEngine::Error, "Error in reading profile %0: %1");509 llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) {510 D.Diag(DiagID) << UsePath.str() << EI.message();511 });512 } else {513 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =514 std::move(ReaderOrErr.get());515 StringRef UseKind;516 // Currently memprof profiles are only added at the IR level. Mark the517 // profile type as IR in that case as well and the subsequent matching518 // needs to detect which is available (might be one or both).519 if (PGOReader->isIRLevelProfile() || PGOReader->hasMemoryProfile()) {520 if (PGOReader->hasCSIRLevelProfile())521 UseKind = "csllvm";522 else523 UseKind = "llvm";524 } else525 UseKind = "clang";526 527 CmdArgs.push_back(528 Args.MakeArgString("-fprofile-instrument-use=" + UseKind));529 CmdArgs.push_back(530 Args.MakeArgString("-fprofile-instrument-use-path=" + UsePath));531 }532 }533 534 bool EmitCovNotes = Args.hasFlag(options::OPT_ftest_coverage,535 options::OPT_fno_test_coverage, false) ||536 Args.hasArg(options::OPT_coverage);537 bool EmitCovData = TC.needsGCovInstrumentation(Args);538 539 if (Args.hasFlag(options::OPT_fcoverage_mapping,540 options::OPT_fno_coverage_mapping, false)) {541 if (!ProfileGenerateArg)542 D.Diag(clang::diag::err_drv_argument_only_allowed_with)543 << "-fcoverage-mapping"544 << "-fprofile-instr-generate";545 546 CmdArgs.push_back("-fcoverage-mapping");547 }548 549 if (Args.hasFlag(options::OPT_fmcdc_coverage, options::OPT_fno_mcdc_coverage,550 false)) {551 if (!Args.hasFlag(options::OPT_fcoverage_mapping,552 options::OPT_fno_coverage_mapping, false))553 D.Diag(clang::diag::err_drv_argument_only_allowed_with)554 << "-fcoverage-mcdc"555 << "-fcoverage-mapping";556 557 CmdArgs.push_back("-fcoverage-mcdc");558 }559 560 StringRef CoverageCompDir;561 if (Arg *A = Args.getLastArg(options::OPT_ffile_compilation_dir_EQ,562 options::OPT_fcoverage_compilation_dir_EQ))563 CoverageCompDir = A->getValue();564 if (CoverageCompDir.empty()) {565 if (auto CWD = D.getVFS().getCurrentWorkingDirectory())566 CmdArgs.push_back(567 Args.MakeArgString(Twine("-fcoverage-compilation-dir=") + *CWD));568 } else569 CmdArgs.push_back(Args.MakeArgString(Twine("-fcoverage-compilation-dir=") +570 CoverageCompDir));571 572 if (Args.hasArg(options::OPT_fprofile_exclude_files_EQ)) {573 auto *Arg = Args.getLastArg(options::OPT_fprofile_exclude_files_EQ);574 if (!Args.hasArg(options::OPT_coverage))575 D.Diag(clang::diag::err_drv_argument_only_allowed_with)576 << "-fprofile-exclude-files="577 << "--coverage";578 579 StringRef v = Arg->getValue();580 CmdArgs.push_back(581 Args.MakeArgString(Twine("-fprofile-exclude-files=" + v)));582 }583 584 if (Args.hasArg(options::OPT_fprofile_filter_files_EQ)) {585 auto *Arg = Args.getLastArg(options::OPT_fprofile_filter_files_EQ);586 if (!Args.hasArg(options::OPT_coverage))587 D.Diag(clang::diag::err_drv_argument_only_allowed_with)588 << "-fprofile-filter-files="589 << "--coverage";590 591 StringRef v = Arg->getValue();592 CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-filter-files=" + v)));593 }594 595 if (const auto *A = Args.getLastArg(options::OPT_fprofile_update_EQ)) {596 StringRef Val = A->getValue();597 if (Val == "atomic" || Val == "prefer-atomic")598 CmdArgs.push_back("-fprofile-update=atomic");599 else if (Val != "single")600 D.Diag(diag::err_drv_unsupported_option_argument)601 << A->getSpelling() << Val;602 }603 if (const auto *A = Args.getLastArg(options::OPT_fprofile_continuous)) {604 if (!PGOGenerateArg && !CSPGOGenerateArg && !ProfileGenerateArg)605 D.Diag(clang::diag::err_drv_argument_only_allowed_with)606 << A->getSpelling()607 << "-fprofile-generate, -fprofile-instr-generate, or "608 "-fcs-profile-generate";609 else {610 CmdArgs.push_back("-fprofile-continuous");611 // Platforms that require a bias variable:612 if (T.isOSBinFormatELF() || T.isOSAIX() || T.isOSWindows()) {613 CmdArgs.push_back("-mllvm");614 CmdArgs.push_back("-runtime-counter-relocation");615 }616 // -fprofile-instr-generate does not decide the profile file name in the617 // FE, and so it does not define the filename symbol618 // (__llvm_profile_filename). Instead, the runtime uses the name619 // "default.profraw" for the profile file. When continuous mode is ON, we620 // will create the filename symbol so that we can insert the "%c"621 // modifier.622 if (ProfileGenerateArg &&623 (ProfileGenerateArg->getOption().matches(624 options::OPT_fprofile_instr_generate) ||625 (ProfileGenerateArg->getOption().matches(626 options::OPT_fprofile_instr_generate_EQ) &&627 strlen(ProfileGenerateArg->getValue()) == 0)))628 CmdArgs.push_back("-fprofile-instrument-path=default.profraw");629 }630 }631 632 int FunctionGroups = 1;633 int SelectedFunctionGroup = 0;634 if (const auto *A = Args.getLastArg(options::OPT_fprofile_function_groups)) {635 StringRef Val = A->getValue();636 if (Val.getAsInteger(0, FunctionGroups) || FunctionGroups < 1)637 D.Diag(diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;638 }639 if (const auto *A =640 Args.getLastArg(options::OPT_fprofile_selected_function_group)) {641 StringRef Val = A->getValue();642 if (Val.getAsInteger(0, SelectedFunctionGroup) ||643 SelectedFunctionGroup < 0 || SelectedFunctionGroup >= FunctionGroups)644 D.Diag(diag::err_drv_invalid_int_value) << A->getAsString(Args) << Val;645 }646 if (FunctionGroups != 1)647 CmdArgs.push_back(Args.MakeArgString("-fprofile-function-groups=" +648 Twine(FunctionGroups)));649 if (SelectedFunctionGroup != 0)650 CmdArgs.push_back(Args.MakeArgString("-fprofile-selected-function-group=" +651 Twine(SelectedFunctionGroup)));652 653 // Leave -fprofile-dir= an unused argument unless .gcda emission is654 // enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider655 // the flag used. There is no -fno-profile-dir, so the user has no656 // targeted way to suppress the warning.657 Arg *FProfileDir = nullptr;658 if (Args.hasArg(options::OPT_fprofile_arcs) ||659 Args.hasArg(options::OPT_coverage))660 FProfileDir = Args.getLastArg(options::OPT_fprofile_dir);661 662 // Put the .gcno and .gcda files (if needed) next to the primary output file,663 // or fall back to a file in the current directory for `clang -c --coverage664 // d/a.c` in the absence of -o.665 if (EmitCovNotes || EmitCovData) {666 SmallString<128> CoverageFilename;667 if (Arg *DumpDir = Args.getLastArgNoClaim(options::OPT_dumpdir)) {668 // Form ${dumpdir}${basename}.gcno. Note that dumpdir may not end with a669 // path separator.670 CoverageFilename = DumpDir->getValue();671 CoverageFilename += llvm::sys::path::filename(Output.getBaseInput());672 } else if (Arg *FinalOutput =673 C.getArgs().getLastArg(options::OPT__SLASH_Fo)) {674 CoverageFilename = FinalOutput->getValue();675 } else if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) {676 CoverageFilename = FinalOutput->getValue();677 } else {678 CoverageFilename = llvm::sys::path::filename(Output.getBaseInput());679 }680 if (llvm::sys::path::is_relative(CoverageFilename))681 (void)D.getVFS().makeAbsolute(CoverageFilename);682 llvm::sys::path::replace_extension(CoverageFilename, "gcno");683 if (EmitCovNotes) {684 CmdArgs.push_back(685 Args.MakeArgString("-coverage-notes-file=" + CoverageFilename));686 }687 688 if (EmitCovData) {689 if (FProfileDir) {690 SmallString<128> Gcno = std::move(CoverageFilename);691 CoverageFilename = FProfileDir->getValue();692 llvm::sys::path::append(CoverageFilename, Gcno);693 }694 llvm::sys::path::replace_extension(CoverageFilename, "gcda");695 CmdArgs.push_back(696 Args.MakeArgString("-coverage-data-file=" + CoverageFilename));697 }698 }699}700 701static void702RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,703 llvm::codegenoptions::DebugInfoKind DebugInfoKind,704 unsigned DwarfVersion,705 llvm::DebuggerKind DebuggerTuning) {706 addDebugInfoKind(CmdArgs, DebugInfoKind);707 if (DwarfVersion > 0)708 CmdArgs.push_back(709 Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));710 switch (DebuggerTuning) {711 case llvm::DebuggerKind::GDB:712 CmdArgs.push_back("-debugger-tuning=gdb");713 break;714 case llvm::DebuggerKind::LLDB:715 CmdArgs.push_back("-debugger-tuning=lldb");716 break;717 case llvm::DebuggerKind::SCE:718 CmdArgs.push_back("-debugger-tuning=sce");719 break;720 case llvm::DebuggerKind::DBX:721 CmdArgs.push_back("-debugger-tuning=dbx");722 break;723 default:724 break;725 }726}727 728static void RenderDebugInfoCompressionArgs(const ArgList &Args,729 ArgStringList &CmdArgs,730 const Driver &D,731 const ToolChain &TC) {732 const Arg *A = Args.getLastArg(options::OPT_gz_EQ);733 if (!A)734 return;735 if (checkDebugInfoOption(A, Args, D, TC)) {736 StringRef Value = A->getValue();737 if (Value == "none") {738 CmdArgs.push_back("--compress-debug-sections=none");739 } else if (Value == "zlib") {740 if (llvm::compression::zlib::isAvailable()) {741 CmdArgs.push_back(742 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));743 } else {744 D.Diag(diag::warn_debug_compression_unavailable) << "zlib";745 }746 } else if (Value == "zstd") {747 if (llvm::compression::zstd::isAvailable()) {748 CmdArgs.push_back(749 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));750 } else {751 D.Diag(diag::warn_debug_compression_unavailable) << "zstd";752 }753 } else {754 D.Diag(diag::err_drv_unsupported_option_argument)755 << A->getSpelling() << Value;756 }757 }758}759 760static void handleAMDGPUCodeObjectVersionOptions(const Driver &D,761 const ArgList &Args,762 ArgStringList &CmdArgs,763 bool IsCC1As = false) {764 // If no version was requested by the user, use the default value from the765 // back end. This is consistent with the value returned from766 // getAMDGPUCodeObjectVersion. This lets clang emit IR for amdgpu without767 // requiring the corresponding llvm to have the AMDGPU target enabled,768 // provided the user (e.g. front end tests) can use the default.769 if (haveAMDGPUCodeObjectVersionArgument(D, Args)) {770 unsigned CodeObjVer = getAMDGPUCodeObjectVersion(D, Args);771 CmdArgs.insert(CmdArgs.begin() + 1,772 Args.MakeArgString(Twine("--amdhsa-code-object-version=") +773 Twine(CodeObjVer)));774 CmdArgs.insert(CmdArgs.begin() + 1, "-mllvm");775 // -cc1as does not accept -mcode-object-version option.776 if (!IsCC1As)777 CmdArgs.insert(CmdArgs.begin() + 1,778 Args.MakeArgString(Twine("-mcode-object-version=") +779 Twine(CodeObjVer)));780 }781}782 783static bool maybeHasClangPchSignature(const Driver &D, StringRef Path) {784 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MemBuf =785 D.getVFS().getBufferForFile(Path);786 if (!MemBuf)787 return false;788 llvm::file_magic Magic = llvm::identify_magic((*MemBuf)->getBuffer());789 if (Magic == llvm::file_magic::unknown)790 return false;791 // Return true for both raw Clang AST files and object files which may792 // contain a __clangast section.793 if (Magic == llvm::file_magic::clang_ast)794 return true;795 Expected<std::unique_ptr<llvm::object::ObjectFile>> Obj =796 llvm::object::ObjectFile::createObjectFile(**MemBuf, Magic);797 return !Obj.takeError();798}799 800static bool gchProbe(const Driver &D, StringRef Path) {801 llvm::ErrorOr<llvm::vfs::Status> Status = D.getVFS().status(Path);802 if (!Status)803 return false;804 805 if (Status->isDirectory()) {806 std::error_code EC;807 for (llvm::vfs::directory_iterator DI = D.getVFS().dir_begin(Path, EC), DE;808 !EC && DI != DE; DI = DI.increment(EC)) {809 if (maybeHasClangPchSignature(D, DI->path()))810 return true;811 }812 D.Diag(diag::warn_drv_pch_ignoring_gch_dir) << Path;813 return false;814 }815 816 if (maybeHasClangPchSignature(D, Path))817 return true;818 D.Diag(diag::warn_drv_pch_ignoring_gch_file) << Path;819 return false;820}821 822void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,823 const Driver &D, const ArgList &Args,824 ArgStringList &CmdArgs,825 const InputInfo &Output,826 const InputInfoList &Inputs) const {827 const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();828 829 CheckPreprocessingOptions(D, Args);830 831 Args.AddLastArg(CmdArgs, options::OPT_C);832 Args.AddLastArg(CmdArgs, options::OPT_CC);833 834 // Handle dependency file generation.835 Arg *ArgM = Args.getLastArg(options::OPT_MM);836 if (!ArgM)837 ArgM = Args.getLastArg(options::OPT_M);838 Arg *ArgMD = Args.getLastArg(options::OPT_MMD);839 if (!ArgMD)840 ArgMD = Args.getLastArg(options::OPT_MD);841 842 // -M and -MM imply -w.843 if (ArgM)844 CmdArgs.push_back("-w");845 else846 ArgM = ArgMD;847 848 if (ArgM) {849 if (!JA.isDeviceOffloading(Action::OFK_HIP)) {850 // Determine the output location.851 const char *DepFile;852 if (Arg *MF = Args.getLastArg(options::OPT_MF)) {853 DepFile = MF->getValue();854 C.addFailureResultFile(DepFile, &JA);855 } else if (Output.getType() == types::TY_Dependencies) {856 DepFile = Output.getFilename();857 } else if (!ArgMD) {858 DepFile = "-";859 } else {860 DepFile = getDependencyFileName(Args, Inputs);861 C.addFailureResultFile(DepFile, &JA);862 }863 CmdArgs.push_back("-dependency-file");864 CmdArgs.push_back(DepFile);865 }866 // Cmake generates dependency files using all compilation options specified867 // by users. Claim those not used for dependency files.868 if (JA.isOffloading(Action::OFK_HIP)) {869 Args.ClaimAllArgs(options::OPT_offload_compress);870 Args.ClaimAllArgs(options::OPT_no_offload_compress);871 Args.ClaimAllArgs(options::OPT_offload_jobs_EQ);872 }873 874 bool HasTarget = false;875 for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {876 HasTarget = true;877 A->claim();878 if (A->getOption().matches(options::OPT_MT)) {879 A->render(Args, CmdArgs);880 } else {881 CmdArgs.push_back("-MT");882 SmallString<128> Quoted;883 quoteMakeTarget(A->getValue(), Quoted);884 CmdArgs.push_back(Args.MakeArgString(Quoted));885 }886 }887 888 // Add a default target if one wasn't specified.889 if (!HasTarget) {890 const char *DepTarget;891 892 // If user provided -o, that is the dependency target, except893 // when we are only generating a dependency file.894 Arg *OutputOpt = Args.getLastArg(options::OPT_o, options::OPT__SLASH_Fo);895 if (OutputOpt && Output.getType() != types::TY_Dependencies) {896 DepTarget = OutputOpt->getValue();897 } else {898 // Otherwise derive from the base input.899 //900 // FIXME: This should use the computed output file location.901 SmallString<128> P(Inputs[0].getBaseInput());902 llvm::sys::path::replace_extension(P, "o");903 DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));904 }905 906 CmdArgs.push_back("-MT");907 SmallString<128> Quoted;908 quoteMakeTarget(DepTarget, Quoted);909 CmdArgs.push_back(Args.MakeArgString(Quoted));910 }911 912 if (ArgM->getOption().matches(options::OPT_M) ||913 ArgM->getOption().matches(options::OPT_MD))914 CmdArgs.push_back("-sys-header-deps");915 if ((isa<PrecompileJobAction>(JA) &&916 !Args.hasArg(options::OPT_fno_module_file_deps)) ||917 Args.hasArg(options::OPT_fmodule_file_deps))918 CmdArgs.push_back("-module-file-deps");919 }920 921 if (Args.hasArg(options::OPT_MG)) {922 if (!ArgM || ArgM->getOption().matches(options::OPT_MD) ||923 ArgM->getOption().matches(options::OPT_MMD))924 D.Diag(diag::err_drv_mg_requires_m_or_mm);925 CmdArgs.push_back("-MG");926 }927 928 Args.AddLastArg(CmdArgs, options::OPT_MP);929 Args.AddLastArg(CmdArgs, options::OPT_MV);930 931 // Add offload include arguments specific for CUDA/HIP/SYCL. This must happen932 // before we -I or -include anything else, because we must pick up the933 // CUDA/HIP/SYCL headers from the particular CUDA/ROCm/SYCL installation,934 // rather than from e.g. /usr/local/include.935 if (JA.isOffloading(Action::OFK_Cuda))936 getToolChain().AddCudaIncludeArgs(Args, CmdArgs);937 if (JA.isOffloading(Action::OFK_HIP))938 getToolChain().AddHIPIncludeArgs(Args, CmdArgs);939 if (JA.isOffloading(Action::OFK_SYCL))940 getToolChain().addSYCLIncludeArgs(Args, CmdArgs);941 942 // If we are offloading to a target via OpenMP we need to include the943 // openmp_wrappers folder which contains alternative system headers.944 if (JA.isDeviceOffloading(Action::OFK_OpenMP) &&945 !Args.hasArg(options::OPT_nostdinc) &&946 Args.hasFlag(options::OPT_offload_inc, options::OPT_no_offload_inc,947 true) &&948 getToolChain().getTriple().isGPU()) {949 if (!Args.hasArg(options::OPT_nobuiltininc)) {950 // Add openmp_wrappers/* to our system include path. This lets us wrap951 // standard library headers.952 SmallString<128> P(D.ResourceDir);953 llvm::sys::path::append(P, "include");954 llvm::sys::path::append(P, "openmp_wrappers");955 CmdArgs.push_back("-internal-isystem");956 CmdArgs.push_back(Args.MakeArgString(P));957 }958 959 CmdArgs.push_back("-include");960 CmdArgs.push_back("__clang_openmp_device_functions.h");961 }962 963 if (Args.hasArg(options::OPT_foffload_via_llvm)) {964 // Add llvm_wrappers/* to our system include path. This lets us wrap965 // standard library headers and other headers.966 SmallString<128> P(D.ResourceDir);967 llvm::sys::path::append(P, "include", "llvm_offload_wrappers");968 CmdArgs.append({"-internal-isystem", Args.MakeArgString(P), "-include"});969 if (JA.isDeviceOffloading(Action::OFK_OpenMP))970 CmdArgs.push_back("__llvm_offload_device.h");971 else972 CmdArgs.push_back("__llvm_offload_host.h");973 }974 975 // Add -i* options, and automatically translate to976 // -include-pch/-include-pth for transparent PCH support. It's977 // wonky, but we include looking for .gch so we can support seamless978 // replacement into a build system already set up to be generating979 // .gch files.980 981 if (getToolChain().getDriver().IsCLMode()) {982 const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);983 const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);984 if (YcArg && JA.getKind() >= Action::PrecompileJobClass &&985 JA.getKind() <= Action::AssembleJobClass) {986 CmdArgs.push_back(Args.MakeArgString("-building-pch-with-obj"));987 // -fpch-instantiate-templates is the default when creating988 // precomp using /Yc989 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,990 options::OPT_fno_pch_instantiate_templates, true))991 CmdArgs.push_back(Args.MakeArgString("-fpch-instantiate-templates"));992 }993 if (YcArg || YuArg) {994 StringRef ThroughHeader = YcArg ? YcArg->getValue() : YuArg->getValue();995 if (!isa<PrecompileJobAction>(JA)) {996 CmdArgs.push_back("-include-pch");997 CmdArgs.push_back(Args.MakeArgString(D.GetClPchPath(998 C, !ThroughHeader.empty()999 ? ThroughHeader1000 : llvm::sys::path::filename(Inputs[0].getBaseInput()))));1001 }1002 1003 if (ThroughHeader.empty()) {1004 CmdArgs.push_back(Args.MakeArgString(1005 Twine("-pch-through-hdrstop-") + (YcArg ? "create" : "use")));1006 } else {1007 CmdArgs.push_back(1008 Args.MakeArgString(Twine("-pch-through-header=") + ThroughHeader));1009 }1010 }1011 }1012 1013 bool RenderedImplicitInclude = false;1014 for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {1015 if (A->getOption().matches(options::OPT_include) &&1016 D.getProbePrecompiled()) {1017 // Handling of gcc-style gch precompiled headers.1018 bool IsFirstImplicitInclude = !RenderedImplicitInclude;1019 RenderedImplicitInclude = true;1020 1021 bool FoundPCH = false;1022 SmallString<128> P(A->getValue());1023 // We want the files to have a name like foo.h.pch. Add a dummy extension1024 // so that replace_extension does the right thing.1025 P += ".dummy";1026 llvm::sys::path::replace_extension(P, "pch");1027 if (D.getVFS().exists(P))1028 FoundPCH = true;1029 1030 if (!FoundPCH) {1031 // For GCC compat, probe for a file or directory ending in .gch instead.1032 llvm::sys::path::replace_extension(P, "gch");1033 FoundPCH = gchProbe(D, P.str());1034 }1035 1036 if (FoundPCH) {1037 if (IsFirstImplicitInclude) {1038 A->claim();1039 CmdArgs.push_back("-include-pch");1040 CmdArgs.push_back(Args.MakeArgString(P));1041 continue;1042 } else {1043 // Ignore the PCH if not first on command line and emit warning.1044 D.Diag(diag::warn_drv_pch_not_first_include) << P1045 << A->getAsString(Args);1046 }1047 }1048 } else if (A->getOption().matches(options::OPT_isystem_after)) {1049 // Handling of paths which must come late. These entries are handled by1050 // the toolchain itself after the resource dir is inserted in the right1051 // search order.1052 // Do not claim the argument so that the use of the argument does not1053 // silently go unnoticed on toolchains which do not honour the option.1054 continue;1055 } else if (A->getOption().matches(options::OPT_stdlibxx_isystem)) {1056 // Translated to -internal-isystem by the driver, no need to pass to cc1.1057 continue;1058 } else if (A->getOption().matches(options::OPT_ibuiltininc)) {1059 // This is used only by the driver. No need to pass to cc1.1060 continue;1061 }1062 1063 // Not translated, render as usual.1064 A->claim();1065 A->render(Args, CmdArgs);1066 }1067 1068 Args.addAllArgs(CmdArgs,1069 {options::OPT_D, options::OPT_U, options::OPT_I_Group,1070 options::OPT_F, options::OPT_embed_dir_EQ});1071 1072 // Add -Wp, and -Xpreprocessor if using the preprocessor.1073 1074 // FIXME: There is a very unfortunate problem here, some troubled1075 // souls abuse -Wp, to pass preprocessor options in gcc syntax. To1076 // really support that we would have to parse and then translate1077 // those options. :(1078 Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,1079 options::OPT_Xpreprocessor);1080 1081 // -I- is a deprecated GCC feature, reject it.1082 if (Arg *A = Args.getLastArg(options::OPT_I_))1083 D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);1084 1085 // If we have a --sysroot, and don't have an explicit -isysroot flag, add an1086 // -isysroot to the CC1 invocation.1087 StringRef sysroot = C.getSysRoot();1088 if (sysroot != "") {1089 if (!Args.hasArg(options::OPT_isysroot)) {1090 CmdArgs.push_back("-isysroot");1091 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));1092 }1093 }1094 1095 // Parse additional include paths from environment variables.1096 // FIXME: We should probably sink the logic for handling these from the1097 // frontend into the driver. It will allow deleting 4 otherwise unused flags.1098 // CPATH - included following the user specified includes (but prior to1099 // builtin and standard includes).1100 addDirectoryList(Args, CmdArgs, "-I", "CPATH");1101 // C_INCLUDE_PATH - system includes enabled when compiling C.1102 addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");1103 // CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.1104 addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");1105 // OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.1106 addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");1107 // OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.1108 addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");1109 1110 // While adding the include arguments, we also attempt to retrieve the1111 // arguments of related offloading toolchains or arguments that are specific1112 // of an offloading programming model.1113 1114 // Add C++ include arguments, if needed.1115 if (types::isCXX(Inputs[0].getType())) {1116 bool HasStdlibxxIsystem = Args.hasArg(options::OPT_stdlibxx_isystem);1117 forAllAssociatedToolChains(1118 C, JA, getToolChain(),1119 [&Args, &CmdArgs, HasStdlibxxIsystem](const ToolChain &TC) {1120 HasStdlibxxIsystem ? TC.AddClangCXXStdlibIsystemArgs(Args, CmdArgs)1121 : TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);1122 });1123 }1124 1125 // If we are compiling for a GPU target we want to override the system headers1126 // with ones created by the 'libc' project if present.1127 // TODO: This should be moved to `AddClangSystemIncludeArgs` by passing the1128 // OffloadKind as an argument.1129 if (!Args.hasArg(options::OPT_nostdinc) &&1130 Args.hasFlag(options::OPT_offload_inc, options::OPT_no_offload_inc,1131 true) &&1132 !Args.hasArg(options::OPT_nobuiltininc) &&1133 (C.getActiveOffloadKinds() == Action::OFK_OpenMP)) {1134 // TODO: CUDA / HIP include their own headers for some common functions1135 // implemented here. We'll need to clean those up so they do not conflict.1136 SmallString<128> P(D.ResourceDir);1137 llvm::sys::path::append(P, "include");1138 llvm::sys::path::append(P, "llvm_libc_wrappers");1139 CmdArgs.push_back("-internal-isystem");1140 CmdArgs.push_back(Args.MakeArgString(P));1141 }1142 1143 // Add system include arguments for all targets but IAMCU.1144 if (!IsIAMCU)1145 forAllAssociatedToolChains(C, JA, getToolChain(),1146 [&Args, &CmdArgs](const ToolChain &TC) {1147 TC.AddClangSystemIncludeArgs(Args, CmdArgs);1148 });1149 else {1150 // For IAMCU add special include arguments.1151 getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);1152 }1153 1154 addMacroPrefixMapArg(D, Args, CmdArgs);1155 addCoveragePrefixMapArg(D, Args, CmdArgs);1156 1157 Args.AddLastArg(CmdArgs, options::OPT_ffile_reproducible,1158 options::OPT_fno_file_reproducible);1159 1160 if (const char *Epoch = std::getenv("SOURCE_DATE_EPOCH")) {1161 CmdArgs.push_back("-source-date-epoch");1162 CmdArgs.push_back(Args.MakeArgString(Epoch));1163 }1164 1165 Args.addOptInFlag(CmdArgs, options::OPT_fdefine_target_os_macros,1166 options::OPT_fno_define_target_os_macros);1167}1168 1169// FIXME: Move to target hook.1170static bool isSignedCharDefault(const llvm::Triple &Triple) {1171 switch (Triple.getArch()) {1172 default:1173 return true;1174 1175 case llvm::Triple::aarch64:1176 case llvm::Triple::aarch64_32:1177 case llvm::Triple::aarch64_be:1178 case llvm::Triple::arm:1179 case llvm::Triple::armeb:1180 case llvm::Triple::thumb:1181 case llvm::Triple::thumbeb:1182 if (Triple.isOSDarwin() || Triple.isOSWindows())1183 return true;1184 return false;1185 1186 case llvm::Triple::ppc:1187 case llvm::Triple::ppc64:1188 if (Triple.isOSDarwin())1189 return true;1190 return false;1191 1192 case llvm::Triple::csky:1193 case llvm::Triple::hexagon:1194 case llvm::Triple::msp430:1195 case llvm::Triple::ppcle:1196 case llvm::Triple::ppc64le:1197 case llvm::Triple::riscv32:1198 case llvm::Triple::riscv64:1199 case llvm::Triple::systemz:1200 case llvm::Triple::xcore:1201 case llvm::Triple::xtensa:1202 return false;1203 }1204}1205 1206static bool hasMultipleInvocations(const llvm::Triple &Triple,1207 const ArgList &Args) {1208 // Supported only on Darwin where we invoke the compiler multiple times1209 // followed by an invocation to lipo.1210 if (!Triple.isOSDarwin())1211 return false;1212 // If more than one "-arch <arch>" is specified, we're targeting multiple1213 // architectures resulting in a fat binary.1214 return Args.getAllArgValues(options::OPT_arch).size() > 1;1215}1216 1217static bool checkRemarksOptions(const Driver &D, const ArgList &Args,1218 const llvm::Triple &Triple) {1219 // When enabling remarks, we need to error if:1220 // * The remark file is specified but we're targeting multiple architectures,1221 // which means more than one remark file is being generated.1222 bool hasMultipleInvocations = ::hasMultipleInvocations(Triple, Args);1223 bool hasExplicitOutputFile =1224 Args.getLastArg(options::OPT_foptimization_record_file_EQ);1225 if (hasMultipleInvocations && hasExplicitOutputFile) {1226 D.Diag(diag::err_drv_invalid_output_with_multiple_archs)1227 << "-foptimization-record-file";1228 return false;1229 }1230 return true;1231}1232 1233static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,1234 const llvm::Triple &Triple,1235 const InputInfo &Input,1236 const InputInfo &Output, const JobAction &JA) {1237 StringRef Format = "yaml";1238 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))1239 Format = A->getValue();1240 1241 CmdArgs.push_back("-opt-record-file");1242 1243 const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);1244 if (A) {1245 CmdArgs.push_back(A->getValue());1246 } else {1247 bool hasMultipleArchs =1248 Triple.isOSDarwin() && // Only supported on Darwin platforms.1249 Args.getAllArgValues(options::OPT_arch).size() > 1;1250 1251 SmallString<128> F;1252 1253 if (Args.hasArg(options::OPT_c) || Args.hasArg(options::OPT_S)) {1254 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o))1255 F = FinalOutput->getValue();1256 } else {1257 if (Format != "yaml" && // For YAML, keep the original behavior.1258 Triple.isOSDarwin() && // Enable this only on darwin, since it's the only platform supporting .dSYM bundles.1259 Output.isFilename())1260 F = Output.getFilename();1261 }1262 1263 if (F.empty()) {1264 // Use the input filename.1265 F = llvm::sys::path::stem(Input.getBaseInput());1266 1267 // If we're compiling for an offload architecture (i.e. a CUDA device),1268 // we need to make the file name for the device compilation different1269 // from the host compilation.1270 if (!JA.isDeviceOffloading(Action::OFK_None) &&1271 !JA.isDeviceOffloading(Action::OFK_Host)) {1272 llvm::sys::path::replace_extension(F, "");1273 F += Action::GetOffloadingFileNamePrefix(JA.getOffloadingDeviceKind(),1274 Triple.normalize());1275 F += "-";1276 F += JA.getOffloadingArch();1277 }1278 }1279 1280 // If we're having more than one "-arch", we should name the files1281 // differently so that every cc1 invocation writes to a different file.1282 // We're doing that by appending "-<arch>" with "<arch>" being the arch1283 // name from the triple.1284 if (hasMultipleArchs) {1285 // First, remember the extension.1286 SmallString<64> OldExtension = llvm::sys::path::extension(F);1287 // then, remove it.1288 llvm::sys::path::replace_extension(F, "");1289 // attach -<arch> to it.1290 F += "-";1291 F += Triple.getArchName();1292 // put back the extension.1293 llvm::sys::path::replace_extension(F, OldExtension);1294 }1295 1296 SmallString<32> Extension;1297 Extension += "opt.";1298 Extension += Format;1299 1300 llvm::sys::path::replace_extension(F, Extension);1301 CmdArgs.push_back(Args.MakeArgString(F));1302 }1303 1304 if (const Arg *A =1305 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {1306 CmdArgs.push_back("-opt-record-passes");1307 CmdArgs.push_back(A->getValue());1308 }1309 1310 if (!Format.empty()) {1311 CmdArgs.push_back("-opt-record-format");1312 CmdArgs.push_back(Format.data());1313 }1314}1315 1316void AddAAPCSVolatileBitfieldArgs(const ArgList &Args, ArgStringList &CmdArgs) {1317 if (!Args.hasFlag(options::OPT_faapcs_bitfield_width,1318 options::OPT_fno_aapcs_bitfield_width, true))1319 CmdArgs.push_back("-fno-aapcs-bitfield-width");1320 1321 if (Args.getLastArg(options::OPT_ForceAAPCSBitfieldLoad))1322 CmdArgs.push_back("-faapcs-bitfield-load");1323}1324 1325namespace {1326void RenderARMABI(const Driver &D, const llvm::Triple &Triple,1327 const ArgList &Args, ArgStringList &CmdArgs) {1328 // Select the ABI to use.1329 // FIXME: Support -meabi.1330 // FIXME: Parts of this are duplicated in the backend, unify this somehow.1331 const char *ABIName = nullptr;1332 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))1333 ABIName = A->getValue();1334 else1335 ABIName = llvm::ARM::computeDefaultTargetABI(Triple).data();1336 1337 CmdArgs.push_back("-target-abi");1338 CmdArgs.push_back(ABIName);1339}1340 1341void AddUnalignedAccessWarning(ArgStringList &CmdArgs) {1342 auto StrictAlignIter =1343 llvm::find_if(llvm::reverse(CmdArgs), [](StringRef Arg) {1344 return Arg == "+strict-align" || Arg == "-strict-align";1345 });1346 if (StrictAlignIter != CmdArgs.rend() &&1347 StringRef(*StrictAlignIter) == "+strict-align")1348 CmdArgs.push_back("-Wunaligned-access");1349}1350}1351 1352static void CollectARMPACBTIOptions(const ToolChain &TC, const ArgList &Args,1353 ArgStringList &CmdArgs, bool isAArch64) {1354 const llvm::Triple &Triple = TC.getEffectiveTriple();1355 const Arg *A = isAArch641356 ? Args.getLastArg(options::OPT_msign_return_address_EQ,1357 options::OPT_mbranch_protection_EQ)1358 : Args.getLastArg(options::OPT_mbranch_protection_EQ);1359 if (!A) {1360 if (Triple.isOSOpenBSD() && isAArch64) {1361 CmdArgs.push_back("-msign-return-address=non-leaf");1362 CmdArgs.push_back("-msign-return-address-key=a_key");1363 CmdArgs.push_back("-mbranch-target-enforce");1364 }1365 return;1366 }1367 1368 const Driver &D = TC.getDriver();1369 if (!(isAArch64 || (Triple.isArmT32() && Triple.isArmMClass())))1370 D.Diag(diag::warn_incompatible_branch_protection_option)1371 << Triple.getArchName();1372 1373 StringRef Scope, Key;1374 bool IndirectBranches, BranchProtectionPAuthLR, GuardedControlStack;1375 1376 if (A->getOption().matches(options::OPT_msign_return_address_EQ)) {1377 Scope = A->getValue();1378 if (Scope != "none" && Scope != "non-leaf" && Scope != "all")1379 D.Diag(diag::err_drv_unsupported_option_argument)1380 << A->getSpelling() << Scope;1381 Key = "a_key";1382 IndirectBranches = Triple.isOSOpenBSD() && isAArch64;1383 BranchProtectionPAuthLR = false;1384 GuardedControlStack = false;1385 } else {1386 StringRef DiagMsg;1387 llvm::ARM::ParsedBranchProtection PBP;1388 bool EnablePAuthLR = false;1389 1390 // To know if we need to enable PAuth-LR As part of the standard branch1391 // protection option, it needs to be determined if the feature has been1392 // activated in the `march` argument. This information is stored within the1393 // CmdArgs variable and can be found using a search.1394 if (isAArch64) {1395 auto isPAuthLR = [](const char *member) {1396 llvm::AArch64::ExtensionInfo pauthlr_extension =1397 llvm::AArch64::getExtensionByID(llvm::AArch64::AEK_PAUTHLR);1398 return pauthlr_extension.PosTargetFeature == member;1399 };1400 1401 if (llvm::any_of(CmdArgs, isPAuthLR))1402 EnablePAuthLR = true;1403 }1404 if (!llvm::ARM::parseBranchProtection(A->getValue(), PBP, DiagMsg,1405 EnablePAuthLR))1406 D.Diag(diag::err_drv_unsupported_option_argument)1407 << A->getSpelling() << DiagMsg;1408 if (!isAArch64 && PBP.Key == "b_key")1409 D.Diag(diag::warn_unsupported_branch_protection)1410 << "b-key" << A->getAsString(Args);1411 Scope = PBP.Scope;1412 Key = PBP.Key;1413 BranchProtectionPAuthLR = PBP.BranchProtectionPAuthLR;1414 IndirectBranches = PBP.BranchTargetEnforcement;1415 GuardedControlStack = PBP.GuardedControlStack;1416 }1417 1418 Arg *PtrauthReturnsArg = Args.getLastArg(options::OPT_fptrauth_returns,1419 options::OPT_fno_ptrauth_returns);1420 bool HasPtrauthReturns =1421 PtrauthReturnsArg &&1422 PtrauthReturnsArg->getOption().matches(options::OPT_fptrauth_returns);1423 // GCS is currently untested with ptrauth-returns, but enabling this could be1424 // allowed in future after testing with a suitable system.1425 if (Scope != "none" || BranchProtectionPAuthLR || GuardedControlStack) {1426 if (Triple.getEnvironment() == llvm::Triple::PAuthTest)1427 D.Diag(diag::err_drv_unsupported_opt_for_target)1428 << A->getAsString(Args) << Triple.getTriple();1429 else if (HasPtrauthReturns)1430 D.Diag(diag::err_drv_incompatible_options)1431 << A->getAsString(Args) << "-fptrauth-returns";1432 }1433 1434 CmdArgs.push_back(1435 Args.MakeArgString(Twine("-msign-return-address=") + Scope));1436 if (Scope != "none")1437 CmdArgs.push_back(1438 Args.MakeArgString(Twine("-msign-return-address-key=") + Key));1439 if (BranchProtectionPAuthLR)1440 CmdArgs.push_back(1441 Args.MakeArgString(Twine("-mbranch-protection-pauth-lr")));1442 if (IndirectBranches)1443 CmdArgs.push_back("-mbranch-target-enforce");1444 1445 if (GuardedControlStack)1446 CmdArgs.push_back("-mguarded-control-stack");1447}1448 1449void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,1450 ArgStringList &CmdArgs, bool KernelOrKext) const {1451 RenderARMABI(getToolChain().getDriver(), Triple, Args, CmdArgs);1452 1453 // Determine floating point ABI from the options & target defaults.1454 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);1455 if (ABI == arm::FloatABI::Soft) {1456 // Floating point operations and argument passing are soft.1457 // FIXME: This changes CPP defines, we need -target-soft-float.1458 CmdArgs.push_back("-msoft-float");1459 CmdArgs.push_back("-mfloat-abi");1460 CmdArgs.push_back("soft");1461 } else if (ABI == arm::FloatABI::SoftFP) {1462 // Floating point operations are hard, but argument passing is soft.1463 CmdArgs.push_back("-mfloat-abi");1464 CmdArgs.push_back("soft");1465 } else {1466 // Floating point operations and argument passing are hard.1467 assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");1468 CmdArgs.push_back("-mfloat-abi");1469 CmdArgs.push_back("hard");1470 }1471 1472 // Forward the -mglobal-merge option for explicit control over the pass.1473 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,1474 options::OPT_mno_global_merge)) {1475 CmdArgs.push_back("-mllvm");1476 if (A->getOption().matches(options::OPT_mno_global_merge))1477 CmdArgs.push_back("-arm-global-merge=false");1478 else1479 CmdArgs.push_back("-arm-global-merge=true");1480 }1481 1482 if (!Args.hasFlag(options::OPT_mimplicit_float,1483 options::OPT_mno_implicit_float, true))1484 CmdArgs.push_back("-no-implicit-float");1485 1486 if (Args.getLastArg(options::OPT_mcmse))1487 CmdArgs.push_back("-mcmse");1488 1489 AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);1490 1491 // Enable/disable return address signing and indirect branch targets.1492 CollectARMPACBTIOptions(getToolChain(), Args, CmdArgs, false /*isAArch64*/);1493 1494 AddUnalignedAccessWarning(CmdArgs);1495}1496 1497void Clang::RenderTargetOptions(const llvm::Triple &EffectiveTriple,1498 const ArgList &Args, bool KernelOrKext,1499 ArgStringList &CmdArgs) const {1500 const ToolChain &TC = getToolChain();1501 1502 // Add the target features1503 getTargetFeatures(TC.getDriver(), EffectiveTriple, Args, CmdArgs, false);1504 1505 // Add target specific flags.1506 switch (TC.getArch()) {1507 default:1508 break;1509 1510 case llvm::Triple::arm:1511 case llvm::Triple::armeb:1512 case llvm::Triple::thumb:1513 case llvm::Triple::thumbeb:1514 // Use the effective triple, which takes into account the deployment target.1515 AddARMTargetArgs(EffectiveTriple, Args, CmdArgs, KernelOrKext);1516 break;1517 1518 case llvm::Triple::aarch64:1519 case llvm::Triple::aarch64_32:1520 case llvm::Triple::aarch64_be:1521 AddAArch64TargetArgs(Args, CmdArgs);1522 break;1523 1524 case llvm::Triple::loongarch32:1525 case llvm::Triple::loongarch64:1526 AddLoongArchTargetArgs(Args, CmdArgs);1527 break;1528 1529 case llvm::Triple::mips:1530 case llvm::Triple::mipsel:1531 case llvm::Triple::mips64:1532 case llvm::Triple::mips64el:1533 AddMIPSTargetArgs(Args, CmdArgs);1534 break;1535 1536 case llvm::Triple::ppc:1537 case llvm::Triple::ppcle:1538 case llvm::Triple::ppc64:1539 case llvm::Triple::ppc64le:1540 AddPPCTargetArgs(Args, CmdArgs);1541 break;1542 1543 case llvm::Triple::riscv32:1544 case llvm::Triple::riscv64:1545 AddRISCVTargetArgs(Args, CmdArgs);1546 break;1547 1548 case llvm::Triple::sparc:1549 case llvm::Triple::sparcel:1550 case llvm::Triple::sparcv9:1551 AddSparcTargetArgs(Args, CmdArgs);1552 break;1553 1554 case llvm::Triple::systemz:1555 AddSystemZTargetArgs(Args, CmdArgs);1556 break;1557 1558 case llvm::Triple::x86:1559 case llvm::Triple::x86_64:1560 AddX86TargetArgs(Args, CmdArgs);1561 break;1562 1563 case llvm::Triple::lanai:1564 AddLanaiTargetArgs(Args, CmdArgs);1565 break;1566 1567 case llvm::Triple::hexagon:1568 AddHexagonTargetArgs(Args, CmdArgs);1569 break;1570 1571 case llvm::Triple::wasm32:1572 case llvm::Triple::wasm64:1573 AddWebAssemblyTargetArgs(Args, CmdArgs);1574 break;1575 1576 case llvm::Triple::ve:1577 AddVETargetArgs(Args, CmdArgs);1578 break;1579 }1580}1581 1582namespace {1583void RenderAArch64ABI(const llvm::Triple &Triple, const ArgList &Args,1584 ArgStringList &CmdArgs) {1585 const char *ABIName = nullptr;1586 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))1587 ABIName = A->getValue();1588 else if (Triple.isOSDarwin())1589 ABIName = "darwinpcs";1590 // TODO: we probably want to have some target hook here.1591 else if (Triple.isOSLinux() &&1592 Triple.getEnvironment() == llvm::Triple::PAuthTest)1593 ABIName = "pauthtest";1594 else1595 ABIName = "aapcs";1596 1597 CmdArgs.push_back("-target-abi");1598 CmdArgs.push_back(ABIName);1599}1600}1601 1602void Clang::AddAArch64TargetArgs(const ArgList &Args,1603 ArgStringList &CmdArgs) const {1604 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();1605 1606 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||1607 Args.hasArg(options::OPT_mkernel) ||1608 Args.hasArg(options::OPT_fapple_kext))1609 CmdArgs.push_back("-disable-red-zone");1610 1611 if (!Args.hasFlag(options::OPT_mimplicit_float,1612 options::OPT_mno_implicit_float, true))1613 CmdArgs.push_back("-no-implicit-float");1614 1615 RenderAArch64ABI(Triple, Args, CmdArgs);1616 1617 // Forward the -mglobal-merge option for explicit control over the pass.1618 if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,1619 options::OPT_mno_global_merge)) {1620 CmdArgs.push_back("-mllvm");1621 if (A->getOption().matches(options::OPT_mno_global_merge))1622 CmdArgs.push_back("-aarch64-enable-global-merge=false");1623 else1624 CmdArgs.push_back("-aarch64-enable-global-merge=true");1625 }1626 1627 // Handle -msve_vector_bits=<bits>1628 auto HandleVectorBits = [&](Arg *A, StringRef VScaleMin,1629 StringRef VScaleMax) {1630 StringRef Val = A->getValue();1631 const Driver &D = getToolChain().getDriver();1632 if (Val == "128" || Val == "256" || Val == "512" || Val == "1024" ||1633 Val == "2048" || Val == "128+" || Val == "256+" || Val == "512+" ||1634 Val == "1024+" || Val == "2048+") {1635 unsigned Bits = 0;1636 if (!Val.consume_back("+")) {1637 bool Invalid = Val.getAsInteger(10, Bits);1638 (void)Invalid;1639 assert(!Invalid && "Failed to parse value");1640 CmdArgs.push_back(1641 Args.MakeArgString(VScaleMax + llvm::Twine(Bits / 128)));1642 }1643 1644 bool Invalid = Val.getAsInteger(10, Bits);1645 (void)Invalid;1646 assert(!Invalid && "Failed to parse value");1647 1648 CmdArgs.push_back(1649 Args.MakeArgString(VScaleMin + llvm::Twine(Bits / 128)));1650 } else if (Val == "scalable") {1651 // Silently drop requests for vector-length agnostic code as it's implied.1652 } else {1653 // Handle the unsupported values passed to msve-vector-bits.1654 D.Diag(diag::err_drv_unsupported_option_argument)1655 << A->getSpelling() << Val;1656 }1657 };1658 if (Arg *A = Args.getLastArg(options::OPT_msve_vector_bits_EQ))1659 HandleVectorBits(A, "-mvscale-min=", "-mvscale-max=");1660 if (Arg *A = Args.getLastArg(options::OPT_msve_streaming_vector_bits_EQ))1661 HandleVectorBits(A, "-mvscale-streaming-min=", "-mvscale-streaming-max=");1662 1663 AddAAPCSVolatileBitfieldArgs(Args, CmdArgs);1664 1665 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {1666 CmdArgs.push_back("-tune-cpu");1667 if (strcmp(A->getValue(), "native") == 0)1668 CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));1669 else1670 CmdArgs.push_back(A->getValue());1671 }1672 1673 AddUnalignedAccessWarning(CmdArgs);1674 1675 if (Triple.isOSDarwin() ||1676 (Triple.isOSLinux() &&1677 Triple.getEnvironment() == llvm::Triple::PAuthTest)) {1678 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_intrinsics,1679 options::OPT_fno_ptrauth_intrinsics);1680 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_calls,1681 options::OPT_fno_ptrauth_calls);1682 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_returns,1683 options::OPT_fno_ptrauth_returns);1684 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_auth_traps,1685 options::OPT_fno_ptrauth_auth_traps);1686 Args.addOptInFlag(1687 CmdArgs, options::OPT_fptrauth_vtable_pointer_address_discrimination,1688 options::OPT_fno_ptrauth_vtable_pointer_address_discrimination);1689 Args.addOptInFlag(1690 CmdArgs, options::OPT_fptrauth_vtable_pointer_type_discrimination,1691 options::OPT_fno_ptrauth_vtable_pointer_type_discrimination);1692 Args.addOptInFlag(1693 CmdArgs, options::OPT_fptrauth_type_info_vtable_pointer_discrimination,1694 options::OPT_fno_ptrauth_type_info_vtable_pointer_discrimination);1695 Args.addOptInFlag(1696 CmdArgs, options::OPT_fptrauth_function_pointer_type_discrimination,1697 options::OPT_fno_ptrauth_function_pointer_type_discrimination);1698 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_indirect_gotos,1699 options::OPT_fno_ptrauth_indirect_gotos);1700 }1701 if (Triple.isOSLinux() &&1702 Triple.getEnvironment() == llvm::Triple::PAuthTest) {1703 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_init_fini,1704 options::OPT_fno_ptrauth_init_fini);1705 Args.addOptInFlag(1706 CmdArgs, options::OPT_fptrauth_init_fini_address_discrimination,1707 options::OPT_fno_ptrauth_init_fini_address_discrimination);1708 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_elf_got,1709 options::OPT_fno_ptrauth_elf_got);1710 }1711 Args.addOptInFlag(CmdArgs, options::OPT_faarch64_jump_table_hardening,1712 options::OPT_fno_aarch64_jump_table_hardening);1713 1714 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_objc_isa,1715 options::OPT_fno_ptrauth_objc_isa);1716 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_objc_interface_sel,1717 options::OPT_fno_ptrauth_objc_interface_sel);1718 Args.addOptInFlag(CmdArgs, options::OPT_fptrauth_objc_class_ro,1719 options::OPT_fno_ptrauth_objc_class_ro);1720 1721 // Enable/disable return address signing and indirect branch targets.1722 CollectARMPACBTIOptions(getToolChain(), Args, CmdArgs, true /*isAArch64*/);1723}1724 1725void Clang::AddLoongArchTargetArgs(const ArgList &Args,1726 ArgStringList &CmdArgs) const {1727 const llvm::Triple &Triple = getToolChain().getTriple();1728 1729 CmdArgs.push_back("-target-abi");1730 CmdArgs.push_back(1731 loongarch::getLoongArchABI(getToolChain().getDriver(), Args, Triple)1732 .data());1733 1734 // Handle -mtune.1735 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {1736 std::string TuneCPU = A->getValue();1737 TuneCPU = loongarch::postProcessTargetCPUString(TuneCPU, Triple);1738 CmdArgs.push_back("-tune-cpu");1739 CmdArgs.push_back(Args.MakeArgString(TuneCPU));1740 }1741 1742 if (Arg *A = Args.getLastArg(options::OPT_mannotate_tablejump,1743 options::OPT_mno_annotate_tablejump)) {1744 if (A->getOption().matches(options::OPT_mannotate_tablejump)) {1745 CmdArgs.push_back("-mllvm");1746 CmdArgs.push_back("-loongarch-annotate-tablejump");1747 }1748 }1749}1750 1751void Clang::AddMIPSTargetArgs(const ArgList &Args,1752 ArgStringList &CmdArgs) const {1753 const Driver &D = getToolChain().getDriver();1754 StringRef CPUName;1755 StringRef ABIName;1756 const llvm::Triple &Triple = getToolChain().getTriple();1757 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);1758 1759 CmdArgs.push_back("-target-abi");1760 CmdArgs.push_back(ABIName.data());1761 1762 mips::FloatABI ABI = mips::getMipsFloatABI(D, Args, Triple);1763 if (ABI == mips::FloatABI::Soft) {1764 // Floating point operations and argument passing are soft.1765 CmdArgs.push_back("-msoft-float");1766 CmdArgs.push_back("-mfloat-abi");1767 CmdArgs.push_back("soft");1768 } else {1769 // Floating point operations and argument passing are hard.1770 assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");1771 CmdArgs.push_back("-mfloat-abi");1772 CmdArgs.push_back("hard");1773 }1774 1775 if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,1776 options::OPT_mno_ldc1_sdc1)) {1777 if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {1778 CmdArgs.push_back("-mllvm");1779 CmdArgs.push_back("-mno-ldc1-sdc1");1780 }1781 }1782 1783 if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,1784 options::OPT_mno_check_zero_division)) {1785 if (A->getOption().matches(options::OPT_mno_check_zero_division)) {1786 CmdArgs.push_back("-mllvm");1787 CmdArgs.push_back("-mno-check-zero-division");1788 }1789 }1790 1791 if (Args.getLastArg(options::OPT_mfix4300)) {1792 CmdArgs.push_back("-mllvm");1793 CmdArgs.push_back("-mfix4300");1794 }1795 1796 if (Arg *A = Args.getLastArg(options::OPT_G)) {1797 StringRef v = A->getValue();1798 CmdArgs.push_back("-mllvm");1799 CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));1800 A->claim();1801 }1802 1803 Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt);1804 Arg *ABICalls =1805 Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls);1806 1807 // -mabicalls is the default for many MIPS environments, even with -fno-pic.1808 // -mgpopt is the default for static, -fno-pic environments but these two1809 // options conflict. We want to be certain that -mno-abicalls -mgpopt is1810 // the only case where -mllvm -mgpopt is passed.1811 // NOTE: We need a warning here or in the backend to warn when -mgpopt is1812 // passed explicitly when compiling something with -mabicalls1813 // (implictly) in affect. Currently the warning is in the backend.1814 //1815 // When the ABI in use is N64, we also need to determine the PIC mode that1816 // is in use, as -fno-pic for N64 implies -mno-abicalls.1817 bool NoABICalls =1818 ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls);1819 1820 llvm::Reloc::Model RelocationModel;1821 unsigned PICLevel;1822 bool IsPIE;1823 std::tie(RelocationModel, PICLevel, IsPIE) =1824 ParsePICArgs(getToolChain(), Args);1825 1826 NoABICalls = NoABICalls ||1827 (RelocationModel == llvm::Reloc::Static && ABIName == "n64");1828 1829 bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt);1830 // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt.1831 if (NoABICalls && (!GPOpt || WantGPOpt)) {1832 CmdArgs.push_back("-mllvm");1833 CmdArgs.push_back("-mgpopt");1834 1835 Arg *LocalSData = Args.getLastArg(options::OPT_mlocal_sdata,1836 options::OPT_mno_local_sdata);1837 Arg *ExternSData = Args.getLastArg(options::OPT_mextern_sdata,1838 options::OPT_mno_extern_sdata);1839 Arg *EmbeddedData = Args.getLastArg(options::OPT_membedded_data,1840 options::OPT_mno_embedded_data);1841 if (LocalSData) {1842 CmdArgs.push_back("-mllvm");1843 if (LocalSData->getOption().matches(options::OPT_mlocal_sdata)) {1844 CmdArgs.push_back("-mlocal-sdata=1");1845 } else {1846 CmdArgs.push_back("-mlocal-sdata=0");1847 }1848 LocalSData->claim();1849 }1850 1851 if (ExternSData) {1852 CmdArgs.push_back("-mllvm");1853 if (ExternSData->getOption().matches(options::OPT_mextern_sdata)) {1854 CmdArgs.push_back("-mextern-sdata=1");1855 } else {1856 CmdArgs.push_back("-mextern-sdata=0");1857 }1858 ExternSData->claim();1859 }1860 1861 if (EmbeddedData) {1862 CmdArgs.push_back("-mllvm");1863 if (EmbeddedData->getOption().matches(options::OPT_membedded_data)) {1864 CmdArgs.push_back("-membedded-data=1");1865 } else {1866 CmdArgs.push_back("-membedded-data=0");1867 }1868 EmbeddedData->claim();1869 }1870 1871 } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt)1872 D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1);1873 1874 if (GPOpt)1875 GPOpt->claim();1876 1877 if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {1878 StringRef Val = StringRef(A->getValue());1879 if (mips::hasCompactBranches(CPUName)) {1880 if (Val == "never" || Val == "always" || Val == "optimal") {1881 CmdArgs.push_back("-mllvm");1882 CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));1883 } else1884 D.Diag(diag::err_drv_unsupported_option_argument)1885 << A->getSpelling() << Val;1886 } else1887 D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;1888 }1889 1890 if (Arg *A = Args.getLastArg(options::OPT_mrelax_pic_calls,1891 options::OPT_mno_relax_pic_calls)) {1892 if (A->getOption().matches(options::OPT_mno_relax_pic_calls)) {1893 CmdArgs.push_back("-mllvm");1894 CmdArgs.push_back("-mips-jalr-reloc=0");1895 }1896 }1897}1898 1899void Clang::AddPPCTargetArgs(const ArgList &Args,1900 ArgStringList &CmdArgs) const {1901 const Driver &D = getToolChain().getDriver();1902 const llvm::Triple &T = getToolChain().getTriple();1903 if (Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {1904 CmdArgs.push_back("-tune-cpu");1905 StringRef CPU = llvm::PPC::getNormalizedPPCTuneCPU(T, A->getValue());1906 CmdArgs.push_back(Args.MakeArgString(CPU.str()));1907 }1908 1909 // Select the ABI to use.1910 const char *ABIName = nullptr;1911 if (T.isOSBinFormatELF()) {1912 switch (getToolChain().getArch()) {1913 case llvm::Triple::ppc64: {1914 if (T.isPPC64ELFv2ABI())1915 ABIName = "elfv2";1916 else1917 ABIName = "elfv1";1918 break;1919 }1920 case llvm::Triple::ppc64le:1921 ABIName = "elfv2";1922 break;1923 default:1924 break;1925 }1926 }1927 1928 bool IEEELongDouble = getToolChain().defaultToIEEELongDouble();1929 bool VecExtabi = false;1930 for (const Arg *A : Args.filtered(options::OPT_mabi_EQ)) {1931 StringRef V = A->getValue();1932 if (V == "ieeelongdouble") {1933 IEEELongDouble = true;1934 A->claim();1935 } else if (V == "ibmlongdouble") {1936 IEEELongDouble = false;1937 A->claim();1938 } else if (V == "vec-default") {1939 VecExtabi = false;1940 A->claim();1941 } else if (V == "vec-extabi") {1942 VecExtabi = true;1943 A->claim();1944 } else if (V == "elfv1") {1945 ABIName = "elfv1";1946 A->claim();1947 } else if (V == "elfv2") {1948 ABIName = "elfv2";1949 A->claim();1950 } else if (V != "altivec")1951 // The ppc64 linux abis are all "altivec" abis by default. Accept and ignore1952 // the option if given as we don't have backend support for any targets1953 // that don't use the altivec abi.1954 ABIName = A->getValue();1955 }1956 if (IEEELongDouble)1957 CmdArgs.push_back("-mabi=ieeelongdouble");1958 if (VecExtabi) {1959 if (!T.isOSAIX())1960 D.Diag(diag::err_drv_unsupported_opt_for_target)1961 << "-mabi=vec-extabi" << T.str();1962 CmdArgs.push_back("-mabi=vec-extabi");1963 }1964 1965 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true))1966 CmdArgs.push_back("-disable-red-zone");1967 1968 ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);1969 if (FloatABI == ppc::FloatABI::Soft) {1970 // Floating point operations and argument passing are soft.1971 CmdArgs.push_back("-msoft-float");1972 CmdArgs.push_back("-mfloat-abi");1973 CmdArgs.push_back("soft");1974 } else {1975 // Floating point operations and argument passing are hard.1976 assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");1977 CmdArgs.push_back("-mfloat-abi");1978 CmdArgs.push_back("hard");1979 }1980 1981 if (ABIName) {1982 CmdArgs.push_back("-target-abi");1983 CmdArgs.push_back(ABIName);1984 }1985}1986 1987void Clang::AddRISCVTargetArgs(const ArgList &Args,1988 ArgStringList &CmdArgs) const {1989 const llvm::Triple &Triple = getToolChain().getTriple();1990 StringRef ABIName = riscv::getRISCVABI(Args, Triple);1991 1992 CmdArgs.push_back("-target-abi");1993 CmdArgs.push_back(ABIName.data());1994 1995 if (Arg *A = Args.getLastArg(options::OPT_G)) {1996 CmdArgs.push_back("-msmall-data-limit");1997 CmdArgs.push_back(A->getValue());1998 }1999 2000 if (!Args.hasFlag(options::OPT_mimplicit_float,2001 options::OPT_mno_implicit_float, true))2002 CmdArgs.push_back("-no-implicit-float");2003 2004 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {2005 CmdArgs.push_back("-tune-cpu");2006 if (strcmp(A->getValue(), "native") == 0)2007 CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));2008 else2009 CmdArgs.push_back(A->getValue());2010 }2011 2012 // Handle -mrvv-vector-bits=<bits>2013 if (Arg *A = Args.getLastArg(options::OPT_mrvv_vector_bits_EQ)) {2014 StringRef Val = A->getValue();2015 const Driver &D = getToolChain().getDriver();2016 2017 // Get minimum VLen from march.2018 unsigned MinVLen = 0;2019 std::string Arch = riscv::getRISCVArch(Args, Triple);2020 auto ISAInfo = llvm::RISCVISAInfo::parseArchString(2021 Arch, /*EnableExperimentalExtensions*/ true);2022 // Ignore parsing error.2023 if (!errorToBool(ISAInfo.takeError()))2024 MinVLen = (*ISAInfo)->getMinVLen();2025 2026 // If the value is "zvl", use MinVLen from march. Otherwise, try to parse2027 // as integer as long as we have a MinVLen.2028 unsigned Bits = 0;2029 if (Val == "zvl" && MinVLen >= llvm::RISCV::RVVBitsPerBlock) {2030 Bits = MinVLen;2031 } else if (!Val.getAsInteger(10, Bits)) {2032 // Only accept power of 2 values beteen RVVBitsPerBlock and 65536 that2033 // at least MinVLen.2034 if (Bits < MinVLen || Bits < llvm::RISCV::RVVBitsPerBlock ||2035 Bits > 65536 || !llvm::isPowerOf2_32(Bits))2036 Bits = 0;2037 }2038 2039 // If we got a valid value try to use it.2040 if (Bits != 0) {2041 unsigned VScaleMin = Bits / llvm::RISCV::RVVBitsPerBlock;2042 CmdArgs.push_back(2043 Args.MakeArgString("-mvscale-max=" + llvm::Twine(VScaleMin)));2044 CmdArgs.push_back(2045 Args.MakeArgString("-mvscale-min=" + llvm::Twine(VScaleMin)));2046 } else if (Val != "scalable") {2047 // Handle the unsupported values passed to mrvv-vector-bits.2048 D.Diag(diag::err_drv_unsupported_option_argument)2049 << A->getSpelling() << Val;2050 }2051 }2052}2053 2054void Clang::AddSparcTargetArgs(const ArgList &Args,2055 ArgStringList &CmdArgs) const {2056 sparc::FloatABI FloatABI =2057 sparc::getSparcFloatABI(getToolChain().getDriver(), Args);2058 2059 if (FloatABI == sparc::FloatABI::Soft) {2060 // Floating point operations and argument passing are soft.2061 CmdArgs.push_back("-msoft-float");2062 CmdArgs.push_back("-mfloat-abi");2063 CmdArgs.push_back("soft");2064 } else {2065 // Floating point operations and argument passing are hard.2066 assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");2067 CmdArgs.push_back("-mfloat-abi");2068 CmdArgs.push_back("hard");2069 }2070 2071 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {2072 StringRef Name = A->getValue();2073 std::string TuneCPU;2074 if (Name == "native")2075 TuneCPU = std::string(llvm::sys::getHostCPUName());2076 else2077 TuneCPU = std::string(Name);2078 2079 CmdArgs.push_back("-tune-cpu");2080 CmdArgs.push_back(Args.MakeArgString(TuneCPU));2081 }2082}2083 2084void Clang::AddSystemZTargetArgs(const ArgList &Args,2085 ArgStringList &CmdArgs) const {2086 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {2087 CmdArgs.push_back("-tune-cpu");2088 if (strcmp(A->getValue(), "native") == 0)2089 CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));2090 else2091 CmdArgs.push_back(A->getValue());2092 }2093 2094 bool HasBackchain =2095 Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false);2096 bool HasPackedStack = Args.hasFlag(options::OPT_mpacked_stack,2097 options::OPT_mno_packed_stack, false);2098 systemz::FloatABI FloatABI =2099 systemz::getSystemZFloatABI(getToolChain().getDriver(), Args);2100 bool HasSoftFloat = (FloatABI == systemz::FloatABI::Soft);2101 if (HasBackchain && HasPackedStack && !HasSoftFloat) {2102 const Driver &D = getToolChain().getDriver();2103 D.Diag(diag::err_drv_unsupported_opt)2104 << "-mpacked-stack -mbackchain -mhard-float";2105 }2106 if (HasBackchain)2107 CmdArgs.push_back("-mbackchain");2108 if (HasPackedStack)2109 CmdArgs.push_back("-mpacked-stack");2110 if (HasSoftFloat) {2111 // Floating point operations and argument passing are soft.2112 CmdArgs.push_back("-msoft-float");2113 CmdArgs.push_back("-mfloat-abi");2114 CmdArgs.push_back("soft");2115 }2116}2117 2118void Clang::AddX86TargetArgs(const ArgList &Args,2119 ArgStringList &CmdArgs) const {2120 const Driver &D = getToolChain().getDriver();2121 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/false);2122 2123 if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||2124 Args.hasArg(options::OPT_mkernel) ||2125 Args.hasArg(options::OPT_fapple_kext))2126 CmdArgs.push_back("-disable-red-zone");2127 2128 if (!Args.hasFlag(options::OPT_mtls_direct_seg_refs,2129 options::OPT_mno_tls_direct_seg_refs, true))2130 CmdArgs.push_back("-mno-tls-direct-seg-refs");2131 2132 // Default to avoid implicit floating-point for kernel/kext code, but allow2133 // that to be overridden with -mno-soft-float.2134 bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||2135 Args.hasArg(options::OPT_fapple_kext));2136 if (Arg *A = Args.getLastArg(2137 options::OPT_msoft_float, options::OPT_mno_soft_float,2138 options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {2139 const Option &O = A->getOption();2140 NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||2141 O.matches(options::OPT_msoft_float));2142 }2143 if (NoImplicitFloat)2144 CmdArgs.push_back("-no-implicit-float");2145 2146 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {2147 StringRef Value = A->getValue();2148 if (Value == "intel" || Value == "att") {2149 CmdArgs.push_back("-mllvm");2150 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));2151 CmdArgs.push_back(Args.MakeArgString("-inline-asm=" + Value));2152 } else {2153 D.Diag(diag::err_drv_unsupported_option_argument)2154 << A->getSpelling() << Value;2155 }2156 } else if (D.IsCLMode()) {2157 CmdArgs.push_back("-mllvm");2158 CmdArgs.push_back("-x86-asm-syntax=intel");2159 }2160 2161 if (Arg *A = Args.getLastArg(options::OPT_mskip_rax_setup,2162 options::OPT_mno_skip_rax_setup))2163 if (A->getOption().matches(options::OPT_mskip_rax_setup))2164 CmdArgs.push_back(Args.MakeArgString("-mskip-rax-setup"));2165 2166 // Set flags to support MCU ABI.2167 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {2168 CmdArgs.push_back("-mfloat-abi");2169 CmdArgs.push_back("soft");2170 CmdArgs.push_back("-mstack-alignment=4");2171 }2172 2173 // Handle -mtune.2174 2175 // Default to "generic" unless -march is present or targetting the PS4/PS5.2176 std::string TuneCPU;2177 if (!Args.hasArg(options::OPT_march_EQ) && !getToolChain().getTriple().isPS())2178 TuneCPU = "generic";2179 2180 // Override based on -mtune.2181 if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {2182 StringRef Name = A->getValue();2183 2184 if (Name == "native") {2185 Name = llvm::sys::getHostCPUName();2186 if (!Name.empty())2187 TuneCPU = std::string(Name);2188 } else2189 TuneCPU = std::string(Name);2190 }2191 2192 if (!TuneCPU.empty()) {2193 CmdArgs.push_back("-tune-cpu");2194 CmdArgs.push_back(Args.MakeArgString(TuneCPU));2195 }2196}2197 2198void Clang::AddHexagonTargetArgs(const ArgList &Args,2199 ArgStringList &CmdArgs) const {2200 CmdArgs.push_back("-mqdsp6-compat");2201 CmdArgs.push_back("-Wreturn-type");2202 2203 if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {2204 CmdArgs.push_back("-mllvm");2205 CmdArgs.push_back(2206 Args.MakeArgString("-hexagon-small-data-threshold=" + Twine(*G)));2207 }2208 2209 if (!Args.hasArg(options::OPT_fno_short_enums))2210 CmdArgs.push_back("-fshort-enums");2211 if (Args.getLastArg(options::OPT_mieee_rnd_near)) {2212 CmdArgs.push_back("-mllvm");2213 CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");2214 }2215 CmdArgs.push_back("-mllvm");2216 CmdArgs.push_back("-machine-sink-split=0");2217}2218 2219void Clang::AddLanaiTargetArgs(const ArgList &Args,2220 ArgStringList &CmdArgs) const {2221 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {2222 StringRef CPUName = A->getValue();2223 2224 CmdArgs.push_back("-target-cpu");2225 CmdArgs.push_back(Args.MakeArgString(CPUName));2226 }2227 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {2228 StringRef Value = A->getValue();2229 // Only support mregparm=4 to support old usage. Report error for all other2230 // cases.2231 int Mregparm;2232 if (Value.getAsInteger(10, Mregparm)) {2233 if (Mregparm != 4) {2234 getToolChain().getDriver().Diag(2235 diag::err_drv_unsupported_option_argument)2236 << A->getSpelling() << Value;2237 }2238 }2239 }2240}2241 2242void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,2243 ArgStringList &CmdArgs) const {2244 // Default to "hidden" visibility.2245 if (!Args.hasArg(options::OPT_fvisibility_EQ,2246 options::OPT_fvisibility_ms_compat))2247 CmdArgs.push_back("-fvisibility=hidden");2248}2249 2250void Clang::AddVETargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const {2251 // Floating point operations and argument passing are hard.2252 CmdArgs.push_back("-mfloat-abi");2253 CmdArgs.push_back("hard");2254}2255 2256void Clang::DumpCompilationDatabase(Compilation &C, StringRef Filename,2257 StringRef Target, const InputInfo &Output,2258 const InputInfo &Input, const ArgList &Args) const {2259 // If this is a dry run, do not create the compilation database file.2260 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))2261 return;2262 2263 using llvm::yaml::escape;2264 const Driver &D = getToolChain().getDriver();2265 2266 if (!CompilationDatabase) {2267 std::error_code EC;2268 auto File = std::make_unique<llvm::raw_fd_ostream>(2269 Filename, EC,2270 llvm::sys::fs::OF_TextWithCRLF | llvm::sys::fs::OF_Append);2271 if (EC) {2272 D.Diag(clang::diag::err_drv_compilationdatabase) << Filename2273 << EC.message();2274 return;2275 }2276 CompilationDatabase = std::move(File);2277 }2278 auto &CDB = *CompilationDatabase;2279 auto CWD = D.getVFS().getCurrentWorkingDirectory();2280 if (!CWD)2281 CWD = ".";2282 CDB << "{ \"directory\": \"" << escape(*CWD) << "\"";2283 CDB << ", \"file\": \"" << escape(Input.getFilename()) << "\"";2284 if (Output.isFilename())2285 CDB << ", \"output\": \"" << escape(Output.getFilename()) << "\"";2286 CDB << ", \"arguments\": [\"" << escape(D.ClangExecutable) << "\"";2287 SmallString<128> Buf;2288 Buf = "-x";2289 Buf += types::getTypeName(Input.getType());2290 CDB << ", \"" << escape(Buf) << "\"";2291 if (!D.SysRoot.empty() && !Args.hasArg(options::OPT__sysroot_EQ)) {2292 Buf = "--sysroot=";2293 Buf += D.SysRoot;2294 CDB << ", \"" << escape(Buf) << "\"";2295 }2296 CDB << ", \"" << escape(Input.getFilename()) << "\"";2297 if (Output.isFilename())2298 CDB << ", \"-o\", \"" << escape(Output.getFilename()) << "\"";2299 for (auto &A: Args) {2300 auto &O = A->getOption();2301 // Skip language selection, which is positional.2302 if (O.getID() == options::OPT_x)2303 continue;2304 // Skip writing dependency output and the compilation database itself.2305 if (O.getGroup().isValid() && O.getGroup().getID() == options::OPT_M_Group)2306 continue;2307 if (O.getID() == options::OPT_gen_cdb_fragment_path)2308 continue;2309 // Skip inputs.2310 if (O.getKind() == Option::InputClass)2311 continue;2312 // Skip output.2313 if (O.getID() == options::OPT_o)2314 continue;2315 // All other arguments are quoted and appended.2316 ArgStringList ASL;2317 A->render(Args, ASL);2318 for (auto &it: ASL)2319 CDB << ", \"" << escape(it) << "\"";2320 }2321 Buf = "--target=";2322 Buf += Target;2323 CDB << ", \"" << escape(Buf) << "\"]},\n";2324}2325 2326void Clang::DumpCompilationDatabaseFragmentToDir(2327 StringRef Dir, Compilation &C, StringRef Target, const InputInfo &Output,2328 const InputInfo &Input, const llvm::opt::ArgList &Args) const {2329 // If this is a dry run, do not create the compilation database file.2330 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))2331 return;2332 2333 if (CompilationDatabase)2334 DumpCompilationDatabase(C, "", Target, Output, Input, Args);2335 2336 SmallString<256> Path = Dir;2337 const auto &Driver = C.getDriver();2338 Driver.getVFS().makeAbsolute(Path);2339 auto Err = llvm::sys::fs::create_directory(Path, /*IgnoreExisting=*/true);2340 if (Err) {2341 Driver.Diag(diag::err_drv_compilationdatabase) << Dir << Err.message();2342 return;2343 }2344 2345 llvm::sys::path::append(2346 Path,2347 Twine(llvm::sys::path::filename(Input.getFilename())) + ".%%%%.json");2348 int FD;2349 SmallString<256> TempPath;2350 Err = llvm::sys::fs::createUniqueFile(Path, FD, TempPath,2351 llvm::sys::fs::OF_Text);2352 if (Err) {2353 Driver.Diag(diag::err_drv_compilationdatabase) << Path << Err.message();2354 return;2355 }2356 CompilationDatabase =2357 std::make_unique<llvm::raw_fd_ostream>(FD, /*shouldClose=*/true);2358 DumpCompilationDatabase(C, "", Target, Output, Input, Args);2359}2360 2361static bool CheckARMImplicitITArg(StringRef Value) {2362 return Value == "always" || Value == "never" || Value == "arm" ||2363 Value == "thumb";2364}2365 2366static void AddARMImplicitITArgs(const ArgList &Args, ArgStringList &CmdArgs,2367 StringRef Value) {2368 CmdArgs.push_back("-mllvm");2369 CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));2370}2371 2372static void CollectArgsForIntegratedAssembler(Compilation &C,2373 const ArgList &Args,2374 ArgStringList &CmdArgs,2375 const Driver &D) {2376 // Default to -mno-relax-all.2377 //2378 // Note: RISC-V requires an indirect jump for offsets larger than 1MiB. This2379 // cannot be done by assembler branch relaxation as it needs a free temporary2380 // register. Because of this, branch relaxation is handled by a MachineIR pass2381 // before the assembler. Forcing assembler branch relaxation for -O0 makes the2382 // MachineIR branch relaxation inaccurate and it will miss cases where an2383 // indirect branch is necessary.2384 Args.addOptInFlag(CmdArgs, options::OPT_mrelax_all,2385 options::OPT_mno_relax_all);2386 2387 // Only default to -mincremental-linker-compatible if we think we are2388 // targeting the MSVC linker.2389 bool DefaultIncrementalLinkerCompatible =2390 C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();2391 if (Args.hasFlag(options::OPT_mincremental_linker_compatible,2392 options::OPT_mno_incremental_linker_compatible,2393 DefaultIncrementalLinkerCompatible))2394 CmdArgs.push_back("-mincremental-linker-compatible");2395 2396 Args.AddLastArg(CmdArgs, options::OPT_femit_dwarf_unwind_EQ);2397 2398 Args.addOptInFlag(CmdArgs, options::OPT_femit_compact_unwind_non_canonical,2399 options::OPT_fno_emit_compact_unwind_non_canonical);2400 2401 // If you add more args here, also add them to the block below that2402 // starts with "// If CollectArgsForIntegratedAssembler() isn't called below".2403 2404 // When passing -I arguments to the assembler we sometimes need to2405 // unconditionally take the next argument. For example, when parsing2406 // '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the2407 // -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'2408 // arg after parsing the '-I' arg.2409 bool TakeNextArg = false;2410 2411 const llvm::Triple &Triple = C.getDefaultToolChain().getTriple();2412 bool IsELF = Triple.isOSBinFormatELF();2413 bool Crel = false, ExperimentalCrel = false;2414 bool ImplicitMapSyms = false;2415 bool UseRelaxRelocations = C.getDefaultToolChain().useRelaxRelocations();2416 bool UseNoExecStack = false;2417 bool Msa = false;2418 const char *MipsTargetFeature = nullptr;2419 llvm::SmallVector<const char *> SparcTargetFeatures;2420 StringRef ImplicitIt;2421 for (const Arg *A :2422 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler,2423 options::OPT_mimplicit_it_EQ)) {2424 A->claim();2425 2426 if (A->getOption().getID() == options::OPT_mimplicit_it_EQ) {2427 switch (C.getDefaultToolChain().getArch()) {2428 case llvm::Triple::arm:2429 case llvm::Triple::armeb:2430 case llvm::Triple::thumb:2431 case llvm::Triple::thumbeb:2432 // Only store the value; the last value set takes effect.2433 ImplicitIt = A->getValue();2434 if (!CheckARMImplicitITArg(ImplicitIt))2435 D.Diag(diag::err_drv_unsupported_option_argument)2436 << A->getSpelling() << ImplicitIt;2437 continue;2438 default:2439 break;2440 }2441 }2442 2443 for (StringRef Value : A->getValues()) {2444 if (TakeNextArg) {2445 CmdArgs.push_back(Value.data());2446 TakeNextArg = false;2447 continue;2448 }2449 2450 if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&2451 Value == "-mbig-obj")2452 continue; // LLVM handles bigobj automatically2453 2454 auto Equal = Value.split('=');2455 auto checkArg = [&](bool ValidTarget,2456 std::initializer_list<const char *> Set) {2457 if (!ValidTarget) {2458 D.Diag(diag::err_drv_unsupported_opt_for_target)2459 << (Twine("-Wa,") + Equal.first + "=").str()2460 << Triple.getTriple();2461 } else if (!llvm::is_contained(Set, Equal.second)) {2462 D.Diag(diag::err_drv_unsupported_option_argument)2463 << (Twine("-Wa,") + Equal.first + "=").str() << Equal.second;2464 }2465 };2466 switch (C.getDefaultToolChain().getArch()) {2467 default:2468 break;2469 case llvm::Triple::x86:2470 case llvm::Triple::x86_64:2471 if (Equal.first == "-mrelax-relocations" ||2472 Equal.first == "--mrelax-relocations") {2473 UseRelaxRelocations = Equal.second == "yes";2474 checkArg(IsELF, {"yes", "no"});2475 continue;2476 }2477 if (Value == "-msse2avx") {2478 CmdArgs.push_back("-msse2avx");2479 continue;2480 }2481 break;2482 case llvm::Triple::wasm32:2483 case llvm::Triple::wasm64:2484 if (Value == "--no-type-check") {2485 CmdArgs.push_back("-mno-type-check");2486 continue;2487 }2488 break;2489 case llvm::Triple::thumb:2490 case llvm::Triple::thumbeb:2491 case llvm::Triple::arm:2492 case llvm::Triple::armeb:2493 if (Equal.first == "-mimplicit-it") {2494 // Only store the value; the last value set takes effect.2495 ImplicitIt = Equal.second;2496 checkArg(true, {"always", "never", "arm", "thumb"});2497 continue;2498 }2499 if (Value == "-mthumb")2500 // -mthumb has already been processed in ComputeLLVMTriple()2501 // recognize but skip over here.2502 continue;2503 break;2504 case llvm::Triple::aarch64:2505 case llvm::Triple::aarch64_be:2506 case llvm::Triple::aarch64_32:2507 if (Equal.first == "-mmapsyms") {2508 ImplicitMapSyms = Equal.second == "implicit";2509 checkArg(IsELF, {"default", "implicit"});2510 continue;2511 }2512 break;2513 case llvm::Triple::mips:2514 case llvm::Triple::mipsel:2515 case llvm::Triple::mips64:2516 case llvm::Triple::mips64el:2517 if (Value == "--trap") {2518 CmdArgs.push_back("-target-feature");2519 CmdArgs.push_back("+use-tcc-in-div");2520 continue;2521 }2522 if (Value == "--break") {2523 CmdArgs.push_back("-target-feature");2524 CmdArgs.push_back("-use-tcc-in-div");2525 continue;2526 }2527 if (Value.starts_with("-msoft-float")) {2528 CmdArgs.push_back("-target-feature");2529 CmdArgs.push_back("+soft-float");2530 continue;2531 }2532 if (Value.starts_with("-mhard-float")) {2533 CmdArgs.push_back("-target-feature");2534 CmdArgs.push_back("-soft-float");2535 continue;2536 }2537 if (Value == "-mmsa") {2538 Msa = true;2539 continue;2540 }2541 if (Value == "-mno-msa") {2542 Msa = false;2543 continue;2544 }2545 MipsTargetFeature = llvm::StringSwitch<const char *>(Value)2546 .Case("-mips1", "+mips1")2547 .Case("-mips2", "+mips2")2548 .Case("-mips3", "+mips3")2549 .Case("-mips4", "+mips4")2550 .Case("-mips5", "+mips5")2551 .Case("-mips32", "+mips32")2552 .Case("-mips32r2", "+mips32r2")2553 .Case("-mips32r3", "+mips32r3")2554 .Case("-mips32r5", "+mips32r5")2555 .Case("-mips32r6", "+mips32r6")2556 .Case("-mips64", "+mips64")2557 .Case("-mips64r2", "+mips64r2")2558 .Case("-mips64r3", "+mips64r3")2559 .Case("-mips64r5", "+mips64r5")2560 .Case("-mips64r6", "+mips64r6")2561 .Default(nullptr);2562 if (MipsTargetFeature)2563 continue;2564 break;2565 2566 case llvm::Triple::sparc:2567 case llvm::Triple::sparcel:2568 case llvm::Triple::sparcv9:2569 if (Value == "--undeclared-regs") {2570 // LLVM already allows undeclared use of G registers, so this option2571 // becomes a no-op. This solely exists for GNU compatibility.2572 // TODO implement --no-undeclared-regs2573 continue;2574 }2575 SparcTargetFeatures =2576 llvm::StringSwitch<llvm::SmallVector<const char *>>(Value)2577 .Case("-Av8", {"-v8plus"})2578 .Case("-Av8plus", {"+v8plus", "+v9"})2579 .Case("-Av8plusa", {"+v8plus", "+v9", "+vis"})2580 .Case("-Av8plusb", {"+v8plus", "+v9", "+vis", "+vis2"})2581 .Case("-Av8plusd", {"+v8plus", "+v9", "+vis", "+vis2", "+vis3"})2582 .Case("-Av9", {"+v9"})2583 .Case("-Av9a", {"+v9", "+vis"})2584 .Case("-Av9b", {"+v9", "+vis", "+vis2"})2585 .Case("-Av9d", {"+v9", "+vis", "+vis2", "+vis3"})2586 .Default({});2587 if (!SparcTargetFeatures.empty())2588 continue;2589 break;2590 }2591 2592 if (Value == "-force_cpusubtype_ALL") {2593 // Do nothing, this is the default and we don't support anything else.2594 } else if (Value == "-L") {2595 CmdArgs.push_back("-msave-temp-labels");2596 } else if (Value == "--fatal-warnings") {2597 CmdArgs.push_back("-massembler-fatal-warnings");2598 } else if (Value == "--no-warn" || Value == "-W") {2599 CmdArgs.push_back("-massembler-no-warn");2600 } else if (Value == "--noexecstack") {2601 UseNoExecStack = true;2602 } else if (Value.starts_with("-compress-debug-sections") ||2603 Value.starts_with("--compress-debug-sections") ||2604 Value == "-nocompress-debug-sections" ||2605 Value == "--nocompress-debug-sections") {2606 CmdArgs.push_back(Value.data());2607 } else if (Value == "--crel") {2608 Crel = true;2609 } else if (Value == "--no-crel") {2610 Crel = false;2611 } else if (Value == "--allow-experimental-crel") {2612 ExperimentalCrel = true;2613 } else if (Value.starts_with("-I")) {2614 CmdArgs.push_back(Value.data());2615 // We need to consume the next argument if the current arg is a plain2616 // -I. The next arg will be the include directory.2617 if (Value == "-I")2618 TakeNextArg = true;2619 } else if (Value.starts_with("-gdwarf-")) {2620 // "-gdwarf-N" options are not cc1as options.2621 unsigned DwarfVersion = DwarfVersionNum(Value);2622 if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.2623 CmdArgs.push_back(Value.data());2624 } else {2625 RenderDebugEnablingArgs(Args, CmdArgs,2626 llvm::codegenoptions::DebugInfoConstructor,2627 DwarfVersion, llvm::DebuggerKind::Default);2628 }2629 } else if (Value.starts_with("-mcpu") || Value.starts_with("-mfpu") ||2630 Value.starts_with("-mhwdiv") || Value.starts_with("-march")) {2631 // Do nothing, we'll validate it later.2632 } else if (Value == "-defsym" || Value == "--defsym") {2633 if (A->getNumValues() != 2) {2634 D.Diag(diag::err_drv_defsym_invalid_format) << Value;2635 break;2636 }2637 const char *S = A->getValue(1);2638 auto Pair = StringRef(S).split('=');2639 auto Sym = Pair.first;2640 auto SVal = Pair.second;2641 2642 if (Sym.empty() || SVal.empty()) {2643 D.Diag(diag::err_drv_defsym_invalid_format) << S;2644 break;2645 }2646 int64_t IVal;2647 if (SVal.getAsInteger(0, IVal)) {2648 D.Diag(diag::err_drv_defsym_invalid_symval) << SVal;2649 break;2650 }2651 CmdArgs.push_back("--defsym");2652 TakeNextArg = true;2653 } else if (Value == "-fdebug-compilation-dir") {2654 CmdArgs.push_back("-fdebug-compilation-dir");2655 TakeNextArg = true;2656 } else if (Value.consume_front("-fdebug-compilation-dir=")) {2657 // The flag is a -Wa / -Xassembler argument and Options doesn't2658 // parse the argument, so this isn't automatically aliased to2659 // -fdebug-compilation-dir (without '=') here.2660 CmdArgs.push_back("-fdebug-compilation-dir");2661 CmdArgs.push_back(Value.data());2662 } else if (Value == "--version") {2663 D.PrintVersion(C, llvm::outs());2664 } else {2665 D.Diag(diag::err_drv_unsupported_option_argument)2666 << A->getSpelling() << Value;2667 }2668 }2669 }2670 if (ImplicitIt.size())2671 AddARMImplicitITArgs(Args, CmdArgs, ImplicitIt);2672 if (Crel) {2673 if (!ExperimentalCrel)2674 D.Diag(diag::err_drv_experimental_crel);2675 if (Triple.isOSBinFormatELF() && !Triple.isMIPS()) {2676 CmdArgs.push_back("--crel");2677 } else {2678 D.Diag(diag::err_drv_unsupported_opt_for_target)2679 << "-Wa,--crel" << D.getTargetTriple();2680 }2681 }2682 if (ImplicitMapSyms)2683 CmdArgs.push_back("-mmapsyms=implicit");2684 if (Msa)2685 CmdArgs.push_back("-mmsa");2686 if (!UseRelaxRelocations)2687 CmdArgs.push_back("-mrelax-relocations=no");2688 if (UseNoExecStack)2689 CmdArgs.push_back("-mnoexecstack");2690 if (MipsTargetFeature != nullptr) {2691 CmdArgs.push_back("-target-feature");2692 CmdArgs.push_back(MipsTargetFeature);2693 }2694 2695 for (const char *Feature : SparcTargetFeatures) {2696 CmdArgs.push_back("-target-feature");2697 CmdArgs.push_back(Feature);2698 }2699 2700 // forward -fembed-bitcode to assmebler2701 if (C.getDriver().embedBitcodeEnabled() ||2702 C.getDriver().embedBitcodeMarkerOnly())2703 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);2704 2705 if (const char *AsSecureLogFile = getenv("AS_SECURE_LOG_FILE")) {2706 CmdArgs.push_back("-as-secure-log-file");2707 CmdArgs.push_back(Args.MakeArgString(AsSecureLogFile));2708 }2709}2710 2711static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,2712 bool OFastEnabled, const ArgList &Args,2713 ArgStringList &CmdArgs,2714 const JobAction &JA) {2715 // List of veclibs which when used with -fveclib imply -fno-math-errno.2716 constexpr std::array VecLibImpliesNoMathErrno{llvm::StringLiteral("ArmPL"),2717 llvm::StringLiteral("SLEEF")};2718 bool NoMathErrnoWasImpliedByVecLib = false;2719 const Arg *VecLibArg = nullptr;2720 // Track the arg (if any) that enabled errno after -fveclib for diagnostics.2721 const Arg *ArgThatEnabledMathErrnoAfterVecLib = nullptr;2722 2723 // Handle various floating point optimization flags, mapping them to the2724 // appropriate LLVM code generation flags. This is complicated by several2725 // "umbrella" flags, so we do this by stepping through the flags incrementally2726 // adjusting what we think is enabled/disabled, then at the end setting the2727 // LLVM flags based on the final state.2728 bool HonorINFs = true;2729 bool HonorNaNs = true;2730 bool ApproxFunc = false;2731 // -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.2732 bool MathErrno = TC.IsMathErrnoDefault();2733 bool AssociativeMath = false;2734 bool ReciprocalMath = false;2735 bool SignedZeros = true;2736 bool TrappingMath = false; // Implemented via -ffp-exception-behavior2737 bool TrappingMathPresent = false; // Is trapping-math in args, and not2738 // overriden by ffp-exception-behavior?2739 bool RoundingFPMath = false;2740 // -ffp-model values: strict, fast, precise2741 StringRef FPModel = "";2742 // -ffp-exception-behavior options: strict, maytrap, ignore2743 StringRef FPExceptionBehavior = "";2744 // -ffp-eval-method options: double, extended, source2745 StringRef FPEvalMethod = "";2746 llvm::DenormalMode DenormalFPMath =2747 TC.getDefaultDenormalModeForType(Args, JA);2748 llvm::DenormalMode DenormalFP32Math =2749 TC.getDefaultDenormalModeForType(Args, JA, &llvm::APFloat::IEEEsingle());2750 2751 // CUDA and HIP don't rely on the frontend to pass an ffp-contract option.2752 // If one wasn't given by the user, don't pass it here.2753 StringRef FPContract;2754 StringRef LastSeenFfpContractOption;2755 StringRef LastFpContractOverrideOption;2756 bool SeenUnsafeMathModeOption = false;2757 if (!JA.isDeviceOffloading(Action::OFK_Cuda) &&2758 !JA.isOffloading(Action::OFK_HIP))2759 FPContract = "on";2760 bool StrictFPModel = false;2761 StringRef Float16ExcessPrecision = "";2762 StringRef BFloat16ExcessPrecision = "";2763 LangOptions::ComplexRangeKind Range = LangOptions::ComplexRangeKind::CX_None;2764 std::string ComplexRangeStr;2765 StringRef LastComplexRangeOption;2766 2767 // Lambda to set fast-math options. This is also used by -ffp-model=fast2768 auto applyFastMath = [&](bool Aggressive, StringRef CallerOption) {2769 if (Aggressive) {2770 HonorINFs = false;2771 HonorNaNs = false;2772 setComplexRange(D, CallerOption, LangOptions::ComplexRangeKind::CX_Basic,2773 LastComplexRangeOption, Range);2774 } else {2775 HonorINFs = true;2776 HonorNaNs = true;2777 setComplexRange(D, CallerOption,2778 LangOptions::ComplexRangeKind::CX_Promoted,2779 LastComplexRangeOption, Range);2780 }2781 MathErrno = false;2782 AssociativeMath = true;2783 ReciprocalMath = true;2784 ApproxFunc = true;2785 SignedZeros = false;2786 TrappingMath = false;2787 RoundingFPMath = false;2788 FPExceptionBehavior = "";2789 FPContract = "fast";2790 SeenUnsafeMathModeOption = true;2791 };2792 2793 // Lambda to consolidate common handling for fp-contract2794 auto restoreFPContractState = [&]() {2795 // CUDA and HIP don't rely on the frontend to pass an ffp-contract option.2796 // For other targets, if the state has been changed by one of the2797 // unsafe-math umbrella options a subsequent -fno-fast-math or2798 // -fno-unsafe-math-optimizations option reverts to the last value seen for2799 // the -ffp-contract option or "on" if we have not seen the -ffp-contract2800 // option. If we have not seen an unsafe-math option or -ffp-contract,2801 // we leave the FPContract state unchanged.2802 if (!JA.isDeviceOffloading(Action::OFK_Cuda) &&2803 !JA.isOffloading(Action::OFK_HIP)) {2804 if (LastSeenFfpContractOption != "")2805 FPContract = LastSeenFfpContractOption;2806 else if (SeenUnsafeMathModeOption)2807 FPContract = "on";2808 }2809 // In this case, we're reverting to the last explicit fp-contract option2810 // or the platform default2811 LastFpContractOverrideOption = "";2812 };2813 2814 if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {2815 CmdArgs.push_back("-mlimit-float-precision");2816 CmdArgs.push_back(A->getValue());2817 }2818 2819 for (const Arg *A : Args) {2820 auto CheckMathErrnoForVecLib =2821 llvm::make_scope_exit([&, MathErrnoBeforeArg = MathErrno] {2822 if (NoMathErrnoWasImpliedByVecLib && !MathErrnoBeforeArg && MathErrno)2823 ArgThatEnabledMathErrnoAfterVecLib = A;2824 });2825 2826 switch (A->getOption().getID()) {2827 // If this isn't an FP option skip the claim below2828 default: continue;2829 2830 case options::OPT_fcx_limited_range:2831 setComplexRange(D, A->getSpelling(),2832 LangOptions::ComplexRangeKind::CX_Basic,2833 LastComplexRangeOption, Range);2834 break;2835 case options::OPT_fno_cx_limited_range:2836 setComplexRange(D, A->getSpelling(),2837 LangOptions::ComplexRangeKind::CX_Full,2838 LastComplexRangeOption, Range);2839 break;2840 case options::OPT_fcx_fortran_rules:2841 setComplexRange(D, A->getSpelling(),2842 LangOptions::ComplexRangeKind::CX_Improved,2843 LastComplexRangeOption, Range);2844 break;2845 case options::OPT_fno_cx_fortran_rules:2846 setComplexRange(D, A->getSpelling(),2847 LangOptions::ComplexRangeKind::CX_Full,2848 LastComplexRangeOption, Range);2849 break;2850 case options::OPT_fcomplex_arithmetic_EQ: {2851 LangOptions::ComplexRangeKind RangeVal;2852 StringRef Val = A->getValue();2853 if (Val == "full")2854 RangeVal = LangOptions::ComplexRangeKind::CX_Full;2855 else if (Val == "improved")2856 RangeVal = LangOptions::ComplexRangeKind::CX_Improved;2857 else if (Val == "promoted")2858 RangeVal = LangOptions::ComplexRangeKind::CX_Promoted;2859 else if (Val == "basic")2860 RangeVal = LangOptions::ComplexRangeKind::CX_Basic;2861 else {2862 D.Diag(diag::err_drv_unsupported_option_argument)2863 << A->getSpelling() << Val;2864 break;2865 }2866 setComplexRange(D, Args.MakeArgString(A->getSpelling() + Val), RangeVal,2867 LastComplexRangeOption, Range);2868 break;2869 }2870 case options::OPT_ffp_model_EQ: {2871 // If -ffp-model= is seen, reset to fno-fast-math2872 HonorINFs = true;2873 HonorNaNs = true;2874 ApproxFunc = false;2875 // Turning *off* -ffast-math restores the toolchain default.2876 MathErrno = TC.IsMathErrnoDefault();2877 AssociativeMath = false;2878 ReciprocalMath = false;2879 SignedZeros = true;2880 2881 StringRef Val = A->getValue();2882 if (OFastEnabled && Val != "aggressive") {2883 // Only -ffp-model=aggressive is compatible with -OFast, ignore.2884 D.Diag(clang::diag::warn_drv_overriding_option)2885 << Args.MakeArgString("-ffp-model=" + Val) << "-Ofast";2886 break;2887 }2888 StrictFPModel = false;2889 if (!FPModel.empty() && FPModel != Val)2890 D.Diag(clang::diag::warn_drv_overriding_option)2891 << Args.MakeArgString("-ffp-model=" + FPModel)2892 << Args.MakeArgString("-ffp-model=" + Val);2893 if (Val == "fast") {2894 FPModel = Val;2895 applyFastMath(false, Args.MakeArgString(A->getSpelling() + Val));2896 // applyFastMath sets fp-contract="fast"2897 LastFpContractOverrideOption = "-ffp-model=fast";2898 } else if (Val == "aggressive") {2899 FPModel = Val;2900 applyFastMath(true, Args.MakeArgString(A->getSpelling() + Val));2901 // applyFastMath sets fp-contract="fast"2902 LastFpContractOverrideOption = "-ffp-model=aggressive";2903 } else if (Val == "precise") {2904 FPModel = Val;2905 FPContract = "on";2906 LastFpContractOverrideOption = "-ffp-model=precise";2907 setComplexRange(D, Args.MakeArgString(A->getSpelling() + Val),2908 LangOptions::ComplexRangeKind::CX_Full,2909 LastComplexRangeOption, Range);2910 } else if (Val == "strict") {2911 StrictFPModel = true;2912 FPExceptionBehavior = "strict";2913 FPModel = Val;2914 FPContract = "off";2915 LastFpContractOverrideOption = "-ffp-model=strict";2916 TrappingMath = true;2917 RoundingFPMath = true;2918 setComplexRange(D, Args.MakeArgString(A->getSpelling() + Val),2919 LangOptions::ComplexRangeKind::CX_Full,2920 LastComplexRangeOption, Range);2921 } else2922 D.Diag(diag::err_drv_unsupported_option_argument)2923 << A->getSpelling() << Val;2924 break;2925 }2926 2927 // Options controlling individual features2928 case options::OPT_fhonor_infinities: HonorINFs = true; break;2929 case options::OPT_fno_honor_infinities: HonorINFs = false; break;2930 case options::OPT_fhonor_nans: HonorNaNs = true; break;2931 case options::OPT_fno_honor_nans: HonorNaNs = false; break;2932 case options::OPT_fapprox_func: ApproxFunc = true; break;2933 case options::OPT_fno_approx_func: ApproxFunc = false; break;2934 case options::OPT_fmath_errno: MathErrno = true; break;2935 case options::OPT_fno_math_errno: MathErrno = false; break;2936 case options::OPT_fassociative_math: AssociativeMath = true; break;2937 case options::OPT_fno_associative_math: AssociativeMath = false; break;2938 case options::OPT_freciprocal_math: ReciprocalMath = true; break;2939 case options::OPT_fno_reciprocal_math: ReciprocalMath = false; break;2940 case options::OPT_fsigned_zeros: SignedZeros = true; break;2941 case options::OPT_fno_signed_zeros: SignedZeros = false; break;2942 case options::OPT_ftrapping_math:2943 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&2944 FPExceptionBehavior != "strict")2945 // Warn that previous value of option is overridden.2946 D.Diag(clang::diag::warn_drv_overriding_option)2947 << Args.MakeArgString("-ffp-exception-behavior=" +2948 FPExceptionBehavior)2949 << "-ftrapping-math";2950 TrappingMath = true;2951 TrappingMathPresent = true;2952 FPExceptionBehavior = "strict";2953 break;2954 case options::OPT_fveclib:2955 VecLibArg = A;2956 NoMathErrnoWasImpliedByVecLib =2957 llvm::is_contained(VecLibImpliesNoMathErrno, A->getValue());2958 if (NoMathErrnoWasImpliedByVecLib)2959 MathErrno = false;2960 break;2961 case options::OPT_fno_trapping_math:2962 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&2963 FPExceptionBehavior != "ignore")2964 // Warn that previous value of option is overridden.2965 D.Diag(clang::diag::warn_drv_overriding_option)2966 << Args.MakeArgString("-ffp-exception-behavior=" +2967 FPExceptionBehavior)2968 << "-fno-trapping-math";2969 TrappingMath = false;2970 TrappingMathPresent = true;2971 FPExceptionBehavior = "ignore";2972 break;2973 2974 case options::OPT_frounding_math:2975 RoundingFPMath = true;2976 break;2977 2978 case options::OPT_fno_rounding_math:2979 RoundingFPMath = false;2980 break;2981 2982 case options::OPT_fdenormal_fp_math_EQ:2983 DenormalFPMath = llvm::parseDenormalFPAttribute(A->getValue());2984 DenormalFP32Math = DenormalFPMath;2985 if (!DenormalFPMath.isValid()) {2986 D.Diag(diag::err_drv_invalid_value)2987 << A->getAsString(Args) << A->getValue();2988 }2989 break;2990 2991 case options::OPT_fdenormal_fp_math_f32_EQ:2992 DenormalFP32Math = llvm::parseDenormalFPAttribute(A->getValue());2993 if (!DenormalFP32Math.isValid()) {2994 D.Diag(diag::err_drv_invalid_value)2995 << A->getAsString(Args) << A->getValue();2996 }2997 break;2998 2999 // Validate and pass through -ffp-contract option.3000 case options::OPT_ffp_contract: {3001 StringRef Val = A->getValue();3002 if (Val == "fast" || Val == "on" || Val == "off" ||3003 Val == "fast-honor-pragmas") {3004 if (Val != FPContract && LastFpContractOverrideOption != "") {3005 D.Diag(clang::diag::warn_drv_overriding_option)3006 << LastFpContractOverrideOption3007 << Args.MakeArgString("-ffp-contract=" + Val);3008 }3009 3010 FPContract = Val;3011 LastSeenFfpContractOption = Val;3012 LastFpContractOverrideOption = "";3013 } else3014 D.Diag(diag::err_drv_unsupported_option_argument)3015 << A->getSpelling() << Val;3016 break;3017 }3018 3019 // Validate and pass through -ffp-exception-behavior option.3020 case options::OPT_ffp_exception_behavior_EQ: {3021 StringRef Val = A->getValue();3022 if (!TrappingMathPresent && !FPExceptionBehavior.empty() &&3023 FPExceptionBehavior != Val)3024 // Warn that previous value of option is overridden.3025 D.Diag(clang::diag::warn_drv_overriding_option)3026 << Args.MakeArgString("-ffp-exception-behavior=" +3027 FPExceptionBehavior)3028 << Args.MakeArgString("-ffp-exception-behavior=" + Val);3029 TrappingMath = TrappingMathPresent = false;3030 if (Val == "ignore" || Val == "maytrap")3031 FPExceptionBehavior = Val;3032 else if (Val == "strict") {3033 FPExceptionBehavior = Val;3034 TrappingMath = TrappingMathPresent = true;3035 } else3036 D.Diag(diag::err_drv_unsupported_option_argument)3037 << A->getSpelling() << Val;3038 break;3039 }3040 3041 // Validate and pass through -ffp-eval-method option.3042 case options::OPT_ffp_eval_method_EQ: {3043 StringRef Val = A->getValue();3044 if (Val == "double" || Val == "extended" || Val == "source")3045 FPEvalMethod = Val;3046 else3047 D.Diag(diag::err_drv_unsupported_option_argument)3048 << A->getSpelling() << Val;3049 break;3050 }3051 3052 case options::OPT_fexcess_precision_EQ: {3053 StringRef Val = A->getValue();3054 const llvm::Triple::ArchType Arch = TC.getArch();3055 if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {3056 if (Val == "standard" || Val == "fast")3057 Float16ExcessPrecision = Val;3058 // To make it GCC compatible, allow the value of "16" which3059 // means disable excess precision, the same meaning than clang's3060 // equivalent value "none".3061 else if (Val == "16")3062 Float16ExcessPrecision = "none";3063 else3064 D.Diag(diag::err_drv_unsupported_option_argument)3065 << A->getSpelling() << Val;3066 } else {3067 if (!(Val == "standard" || Val == "fast"))3068 D.Diag(diag::err_drv_unsupported_option_argument)3069 << A->getSpelling() << Val;3070 }3071 BFloat16ExcessPrecision = Float16ExcessPrecision;3072 break;3073 }3074 case options::OPT_ffinite_math_only:3075 HonorINFs = false;3076 HonorNaNs = false;3077 break;3078 case options::OPT_fno_finite_math_only:3079 HonorINFs = true;3080 HonorNaNs = true;3081 break;3082 3083 case options::OPT_funsafe_math_optimizations:3084 AssociativeMath = true;3085 ReciprocalMath = true;3086 SignedZeros = false;3087 ApproxFunc = true;3088 TrappingMath = false;3089 FPExceptionBehavior = "";3090 FPContract = "fast";3091 LastFpContractOverrideOption = "-funsafe-math-optimizations";3092 SeenUnsafeMathModeOption = true;3093 break;3094 case options::OPT_fno_unsafe_math_optimizations:3095 AssociativeMath = false;3096 ReciprocalMath = false;3097 SignedZeros = true;3098 ApproxFunc = false;3099 restoreFPContractState();3100 break;3101 3102 case options::OPT_Ofast:3103 // If -Ofast is the optimization level, then -ffast-math should be enabled3104 if (!OFastEnabled)3105 continue;3106 [[fallthrough]];3107 case options::OPT_ffast_math:3108 applyFastMath(true, A->getSpelling());3109 if (A->getOption().getID() == options::OPT_Ofast)3110 LastFpContractOverrideOption = "-Ofast";3111 else3112 LastFpContractOverrideOption = "-ffast-math";3113 break;3114 case options::OPT_fno_fast_math:3115 HonorINFs = true;3116 HonorNaNs = true;3117 // Turning on -ffast-math (with either flag) removes the need for3118 // MathErrno. However, turning *off* -ffast-math merely restores the3119 // toolchain default (which may be false).3120 MathErrno = TC.IsMathErrnoDefault();3121 AssociativeMath = false;3122 ReciprocalMath = false;3123 ApproxFunc = false;3124 SignedZeros = true;3125 restoreFPContractState();3126 if (Range != LangOptions::ComplexRangeKind::CX_Full)3127 setComplexRange(D, A->getSpelling(),3128 LangOptions::ComplexRangeKind::CX_None,3129 LastComplexRangeOption, Range);3130 else3131 Range = LangOptions::ComplexRangeKind::CX_None;3132 LastComplexRangeOption = "";3133 LastFpContractOverrideOption = "";3134 break;3135 } // End switch (A->getOption().getID())3136 3137 // The StrictFPModel local variable is needed to report warnings3138 // in the way we intend. If -ffp-model=strict has been used, we3139 // want to report a warning for the next option encountered that3140 // takes us out of the settings described by fp-model=strict, but3141 // we don't want to continue issuing warnings for other conflicting3142 // options after that.3143 if (StrictFPModel) {3144 // If -ffp-model=strict has been specified on command line but3145 // subsequent options conflict then emit warning diagnostic.3146 if (HonorINFs && HonorNaNs && !AssociativeMath && !ReciprocalMath &&3147 SignedZeros && TrappingMath && RoundingFPMath && !ApproxFunc &&3148 FPContract == "off")3149 // OK: Current Arg doesn't conflict with -ffp-model=strict3150 ;3151 else {3152 StrictFPModel = false;3153 FPModel = "";3154 // The warning for -ffp-contract would have been reported by the3155 // OPT_ffp_contract_EQ handler above. A special check here is needed3156 // to avoid duplicating the warning.3157 auto RHS = (A->getNumValues() == 0)3158 ? A->getSpelling()3159 : Args.MakeArgString(A->getSpelling() + A->getValue());3160 if (A->getSpelling() != "-ffp-contract=") {3161 if (RHS != "-ffp-model=strict")3162 D.Diag(clang::diag::warn_drv_overriding_option)3163 << "-ffp-model=strict" << RHS;3164 }3165 }3166 }3167 3168 // If we handled this option claim it3169 A->claim();3170 }3171 3172 if (!HonorINFs)3173 CmdArgs.push_back("-menable-no-infs");3174 3175 if (!HonorNaNs)3176 CmdArgs.push_back("-menable-no-nans");3177 3178 if (ApproxFunc)3179 CmdArgs.push_back("-fapprox-func");3180 3181 if (MathErrno) {3182 CmdArgs.push_back("-fmath-errno");3183 if (NoMathErrnoWasImpliedByVecLib)3184 D.Diag(clang::diag::warn_drv_math_errno_enabled_after_veclib)3185 << ArgThatEnabledMathErrnoAfterVecLib->getAsString(Args)3186 << VecLibArg->getAsString(Args);3187 }3188 3189 if (AssociativeMath && ReciprocalMath && !SignedZeros && ApproxFunc &&3190 !TrappingMath)3191 CmdArgs.push_back("-funsafe-math-optimizations");3192 3193 if (!SignedZeros)3194 CmdArgs.push_back("-fno-signed-zeros");3195 3196 if (AssociativeMath && !SignedZeros && !TrappingMath)3197 CmdArgs.push_back("-mreassociate");3198 3199 if (ReciprocalMath)3200 CmdArgs.push_back("-freciprocal-math");3201 3202 if (TrappingMath) {3203 // FP Exception Behavior is also set to strict3204 assert(FPExceptionBehavior == "strict");3205 }3206 3207 // The default is IEEE.3208 if (DenormalFPMath != llvm::DenormalMode::getIEEE()) {3209 llvm::SmallString<64> DenormFlag;3210 llvm::raw_svector_ostream ArgStr(DenormFlag);3211 ArgStr << "-fdenormal-fp-math=" << DenormalFPMath;3212 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));3213 }3214 3215 // Add f32 specific denormal mode flag if it's different.3216 if (DenormalFP32Math != DenormalFPMath) {3217 llvm::SmallString<64> DenormFlag;3218 llvm::raw_svector_ostream ArgStr(DenormFlag);3219 ArgStr << "-fdenormal-fp-math-f32=" << DenormalFP32Math;3220 CmdArgs.push_back(Args.MakeArgString(ArgStr.str()));3221 }3222 3223 if (!FPContract.empty())3224 CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));3225 3226 if (RoundingFPMath)3227 CmdArgs.push_back(Args.MakeArgString("-frounding-math"));3228 else3229 CmdArgs.push_back(Args.MakeArgString("-fno-rounding-math"));3230 3231 if (!FPExceptionBehavior.empty())3232 CmdArgs.push_back(Args.MakeArgString("-ffp-exception-behavior=" +3233 FPExceptionBehavior));3234 3235 if (!FPEvalMethod.empty())3236 CmdArgs.push_back(Args.MakeArgString("-ffp-eval-method=" + FPEvalMethod));3237 3238 if (!Float16ExcessPrecision.empty())3239 CmdArgs.push_back(Args.MakeArgString("-ffloat16-excess-precision=" +3240 Float16ExcessPrecision));3241 if (!BFloat16ExcessPrecision.empty())3242 CmdArgs.push_back(Args.MakeArgString("-fbfloat16-excess-precision=" +3243 BFloat16ExcessPrecision));3244 3245 StringRef Recip = parseMRecipOption(D.getDiags(), Args);3246 if (!Recip.empty())3247 CmdArgs.push_back(Args.MakeArgString("-mrecip=" + Recip));3248 3249 // -ffast-math enables the __FAST_MATH__ preprocessor macro, but check for the3250 // individual features enabled by -ffast-math instead of the option itself as3251 // that's consistent with gcc's behaviour.3252 if (!HonorINFs && !HonorNaNs && !MathErrno && AssociativeMath && ApproxFunc &&3253 ReciprocalMath && !SignedZeros && !TrappingMath && !RoundingFPMath)3254 CmdArgs.push_back("-ffast-math");3255 3256 // Handle __FINITE_MATH_ONLY__ similarly.3257 // The -ffinite-math-only is added to CmdArgs when !HonorINFs && !HonorNaNs.3258 // Otherwise process the Xclang arguments to determine if -menable-no-infs and3259 // -menable-no-nans are set by the user.3260 bool shouldAddFiniteMathOnly = false;3261 if (!HonorINFs && !HonorNaNs) {3262 shouldAddFiniteMathOnly = true;3263 } else {3264 bool InfValues = true;3265 bool NanValues = true;3266 for (const auto *Arg : Args.filtered(options::OPT_Xclang)) {3267 StringRef ArgValue = Arg->getValue();3268 if (ArgValue == "-menable-no-nans")3269 NanValues = false;3270 else if (ArgValue == "-menable-no-infs")3271 InfValues = false;3272 }3273 if (!NanValues && !InfValues)3274 shouldAddFiniteMathOnly = true;3275 }3276 if (shouldAddFiniteMathOnly) {3277 CmdArgs.push_back("-ffinite-math-only");3278 }3279 if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {3280 CmdArgs.push_back("-mfpmath");3281 CmdArgs.push_back(A->getValue());3282 }3283 3284 // Disable a codegen optimization for floating-point casts.3285 if (Args.hasFlag(options::OPT_fno_strict_float_cast_overflow,3286 options::OPT_fstrict_float_cast_overflow, false))3287 CmdArgs.push_back("-fno-strict-float-cast-overflow");3288 3289 if (Range != LangOptions::ComplexRangeKind::CX_None)3290 ComplexRangeStr = renderComplexRangeOption(Range);3291 if (!ComplexRangeStr.empty()) {3292 CmdArgs.push_back(Args.MakeArgString(ComplexRangeStr));3293 if (Args.hasArg(options::OPT_fcomplex_arithmetic_EQ))3294 CmdArgs.push_back(Args.MakeArgString("-fcomplex-arithmetic=" +3295 complexRangeKindToStr(Range)));3296 }3297 if (Args.hasArg(options::OPT_fcx_limited_range))3298 CmdArgs.push_back("-fcx-limited-range");3299 if (Args.hasArg(options::OPT_fcx_fortran_rules))3300 CmdArgs.push_back("-fcx-fortran-rules");3301 if (Args.hasArg(options::OPT_fno_cx_limited_range))3302 CmdArgs.push_back("-fno-cx-limited-range");3303 if (Args.hasArg(options::OPT_fno_cx_fortran_rules))3304 CmdArgs.push_back("-fno-cx-fortran-rules");3305}3306 3307static void RenderAnalyzerOptions(const ArgList &Args, ArgStringList &CmdArgs,3308 const llvm::Triple &Triple,3309 const InputInfo &Input) {3310 // Add default argument set.3311 if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {3312 CmdArgs.push_back("-analyzer-checker=core");3313 CmdArgs.push_back("-analyzer-checker=apiModeling");3314 3315 if (!Triple.isWindowsMSVCEnvironment()) {3316 CmdArgs.push_back("-analyzer-checker=unix");3317 } else {3318 // Enable "unix" checkers that also work on Windows.3319 CmdArgs.push_back("-analyzer-checker=unix.API");3320 CmdArgs.push_back("-analyzer-checker=unix.Malloc");3321 CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");3322 CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");3323 CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");3324 CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");3325 }3326 3327 // Disable some unix checkers for PS4/PS5.3328 if (Triple.isPS()) {3329 CmdArgs.push_back("-analyzer-disable-checker=unix.API");3330 CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");3331 }3332 3333 if (Triple.isOSDarwin()) {3334 CmdArgs.push_back("-analyzer-checker=osx");3335 CmdArgs.push_back(3336 "-analyzer-checker=security.insecureAPI.decodeValueOfObjCType");3337 }3338 else if (Triple.isOSFuchsia())3339 CmdArgs.push_back("-analyzer-checker=fuchsia");3340 3341 CmdArgs.push_back("-analyzer-checker=deadcode");3342 3343 if (types::isCXX(Input.getType()))3344 CmdArgs.push_back("-analyzer-checker=cplusplus");3345 3346 if (!Triple.isPS()) {3347 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.UncheckedReturn");3348 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");3349 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");3350 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");3351 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");3352 CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");3353 }3354 3355 // Default nullability checks.3356 CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");3357 CmdArgs.push_back("-analyzer-checker=nullability.NullReturnedFromNonnull");3358 }3359 3360 // Set the output format. The default is plist, for (lame) historical reasons.3361 CmdArgs.push_back("-analyzer-output");3362 if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))3363 CmdArgs.push_back(A->getValue());3364 else3365 CmdArgs.push_back("plist");3366 3367 // Disable the presentation of standard compiler warnings when using3368 // --analyze. We only want to show static analyzer diagnostics or frontend3369 // errors.3370 CmdArgs.push_back("-w");3371 3372 // Add -Xanalyzer arguments when running as analyzer.3373 Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);3374}3375 3376static bool isValidSymbolName(StringRef S) {3377 if (S.empty())3378 return false;3379 3380 if (std::isdigit(S[0]))3381 return false;3382 3383 return llvm::all_of(S, [](char C) { return std::isalnum(C) || C == '_'; });3384}3385 3386static void RenderSSPOptions(const Driver &D, const ToolChain &TC,3387 const ArgList &Args, ArgStringList &CmdArgs,3388 bool KernelOrKext) {3389 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();3390 3391 // NVPTX doesn't support stack protectors; from the compiler's perspective, it3392 // doesn't even have a stack!3393 if (EffectiveTriple.isNVPTX())3394 return;3395 3396 // -stack-protector=0 is default.3397 LangOptions::StackProtectorMode StackProtectorLevel = LangOptions::SSPOff;3398 LangOptions::StackProtectorMode DefaultStackProtectorLevel =3399 TC.GetDefaultStackProtectorLevel(KernelOrKext);3400 3401 if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,3402 options::OPT_fstack_protector_all,3403 options::OPT_fstack_protector_strong,3404 options::OPT_fstack_protector)) {3405 if (A->getOption().matches(options::OPT_fstack_protector))3406 StackProtectorLevel =3407 std::max<>(LangOptions::SSPOn, DefaultStackProtectorLevel);3408 else if (A->getOption().matches(options::OPT_fstack_protector_strong))3409 StackProtectorLevel = LangOptions::SSPStrong;3410 else if (A->getOption().matches(options::OPT_fstack_protector_all))3411 StackProtectorLevel = LangOptions::SSPReq;3412 3413 if (EffectiveTriple.isBPF() && StackProtectorLevel != LangOptions::SSPOff) {3414 D.Diag(diag::warn_drv_unsupported_option_for_target)3415 << A->getSpelling() << EffectiveTriple.getTriple();3416 StackProtectorLevel = DefaultStackProtectorLevel;3417 }3418 } else {3419 StackProtectorLevel = DefaultStackProtectorLevel;3420 }3421 3422 if (StackProtectorLevel) {3423 CmdArgs.push_back("-stack-protector");3424 CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));3425 }3426 3427 // --param ssp-buffer-size=3428 for (const Arg *A : Args.filtered(options::OPT__param)) {3429 StringRef Str(A->getValue());3430 if (Str.consume_front("ssp-buffer-size=")) {3431 if (StackProtectorLevel) {3432 CmdArgs.push_back("-stack-protector-buffer-size");3433 // FIXME: Verify the argument is a valid integer.3434 CmdArgs.push_back(Args.MakeArgString(Str));3435 }3436 A->claim();3437 }3438 }3439 3440 const std::string &TripleStr = EffectiveTriple.getTriple();3441 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_EQ)) {3442 StringRef Value = A->getValue();3443 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&3444 !EffectiveTriple.isARM() && !EffectiveTriple.isThumb() &&3445 !EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())3446 D.Diag(diag::err_drv_unsupported_opt_for_target)3447 << A->getAsString(Args) << TripleStr;3448 if ((EffectiveTriple.isX86() || EffectiveTriple.isARM() ||3449 EffectiveTriple.isThumb()) &&3450 Value != "tls" && Value != "global") {3451 D.Diag(diag::err_drv_invalid_value_with_suggestion)3452 << A->getOption().getName() << Value << "tls global";3453 return;3454 }3455 if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&3456 Value == "tls") {3457 if (!Args.hasArg(options::OPT_mstack_protector_guard_offset_EQ)) {3458 D.Diag(diag::err_drv_ssp_missing_offset_argument)3459 << A->getAsString(Args);3460 return;3461 }3462 // Check whether the target subarch supports the hardware TLS register3463 if (!arm::isHardTPSupported(EffectiveTriple)) {3464 D.Diag(diag::err_target_unsupported_tp_hard)3465 << EffectiveTriple.getArchName();3466 return;3467 }3468 // Check whether the user asked for something other than -mtp=cp153469 if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) {3470 StringRef Value = A->getValue();3471 if (Value != "cp15") {3472 D.Diag(diag::err_drv_argument_not_allowed_with)3473 << A->getAsString(Args) << "-mstack-protector-guard=tls";3474 return;3475 }3476 }3477 CmdArgs.push_back("-target-feature");3478 CmdArgs.push_back("+read-tp-tpidruro");3479 }3480 if (EffectiveTriple.isAArch64() && Value != "sysreg" && Value != "global") {3481 D.Diag(diag::err_drv_invalid_value_with_suggestion)3482 << A->getOption().getName() << Value << "sysreg global";3483 return;3484 }3485 if (EffectiveTriple.isRISCV() || EffectiveTriple.isPPC()) {3486 if (Value != "tls" && Value != "global") {3487 D.Diag(diag::err_drv_invalid_value_with_suggestion)3488 << A->getOption().getName() << Value << "tls global";3489 return;3490 }3491 if (Value == "tls") {3492 if (!Args.hasArg(options::OPT_mstack_protector_guard_offset_EQ)) {3493 D.Diag(diag::err_drv_ssp_missing_offset_argument)3494 << A->getAsString(Args);3495 return;3496 }3497 }3498 }3499 A->render(Args, CmdArgs);3500 }3501 3502 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_offset_EQ)) {3503 StringRef Value = A->getValue();3504 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&3505 !EffectiveTriple.isARM() && !EffectiveTriple.isThumb() &&3506 !EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())3507 D.Diag(diag::err_drv_unsupported_opt_for_target)3508 << A->getAsString(Args) << TripleStr;3509 int Offset;3510 if (Value.getAsInteger(10, Offset)) {3511 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;3512 return;3513 }3514 if ((EffectiveTriple.isARM() || EffectiveTriple.isThumb()) &&3515 (Offset < 0 || Offset > 0xfffff)) {3516 D.Diag(diag::err_drv_invalid_int_value)3517 << A->getOption().getName() << Value;3518 return;3519 }3520 A->render(Args, CmdArgs);3521 }3522 3523 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_reg_EQ)) {3524 StringRef Value = A->getValue();3525 if (!EffectiveTriple.isX86() && !EffectiveTriple.isAArch64() &&3526 !EffectiveTriple.isRISCV() && !EffectiveTriple.isPPC())3527 D.Diag(diag::err_drv_unsupported_opt_for_target)3528 << A->getAsString(Args) << TripleStr;3529 if (EffectiveTriple.isX86() && (Value != "fs" && Value != "gs")) {3530 D.Diag(diag::err_drv_invalid_value_with_suggestion)3531 << A->getOption().getName() << Value << "fs gs";3532 return;3533 }3534 if (EffectiveTriple.isAArch64() && Value != "sp_el0") {3535 D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;3536 return;3537 }3538 if (EffectiveTriple.isRISCV() && Value != "tp") {3539 D.Diag(diag::err_drv_invalid_value_with_suggestion)3540 << A->getOption().getName() << Value << "tp";3541 return;3542 }3543 if (EffectiveTriple.isPPC64() && Value != "r13") {3544 D.Diag(diag::err_drv_invalid_value_with_suggestion)3545 << A->getOption().getName() << Value << "r13";3546 return;3547 }3548 if (EffectiveTriple.isPPC32() && Value != "r2") {3549 D.Diag(diag::err_drv_invalid_value_with_suggestion)3550 << A->getOption().getName() << Value << "r2";3551 return;3552 }3553 A->render(Args, CmdArgs);3554 }3555 3556 if (Arg *A = Args.getLastArg(options::OPT_mstack_protector_guard_symbol_EQ)) {3557 StringRef Value = A->getValue();3558 if (!isValidSymbolName(Value)) {3559 D.Diag(diag::err_drv_argument_only_allowed_with)3560 << A->getOption().getName() << "legal symbol name";3561 return;3562 }3563 A->render(Args, CmdArgs);3564 }3565}3566 3567static void RenderSCPOptions(const ToolChain &TC, const ArgList &Args,3568 ArgStringList &CmdArgs) {3569 const llvm::Triple &EffectiveTriple = TC.getEffectiveTriple();3570 3571 if (!EffectiveTriple.isOSFreeBSD() && !EffectiveTriple.isOSLinux() &&3572 !EffectiveTriple.isOSFuchsia())3573 return;3574 3575 if (!EffectiveTriple.isX86() && !EffectiveTriple.isSystemZ() &&3576 !EffectiveTriple.isPPC64() && !EffectiveTriple.isAArch64() &&3577 !EffectiveTriple.isRISCV())3578 return;3579 3580 Args.addOptInFlag(CmdArgs, options::OPT_fstack_clash_protection,3581 options::OPT_fno_stack_clash_protection);3582}3583 3584static void RenderTrivialAutoVarInitOptions(const Driver &D,3585 const ToolChain &TC,3586 const ArgList &Args,3587 ArgStringList &CmdArgs) {3588 auto DefaultTrivialAutoVarInit = TC.GetDefaultTrivialAutoVarInit();3589 StringRef TrivialAutoVarInit = "";3590 3591 for (const Arg *A : Args) {3592 switch (A->getOption().getID()) {3593 default:3594 continue;3595 case options::OPT_ftrivial_auto_var_init: {3596 A->claim();3597 StringRef Val = A->getValue();3598 if (Val == "uninitialized" || Val == "zero" || Val == "pattern")3599 TrivialAutoVarInit = Val;3600 else3601 D.Diag(diag::err_drv_unsupported_option_argument)3602 << A->getSpelling() << Val;3603 break;3604 }3605 }3606 }3607 3608 if (TrivialAutoVarInit.empty())3609 switch (DefaultTrivialAutoVarInit) {3610 case LangOptions::TrivialAutoVarInitKind::Uninitialized:3611 break;3612 case LangOptions::TrivialAutoVarInitKind::Pattern:3613 TrivialAutoVarInit = "pattern";3614 break;3615 case LangOptions::TrivialAutoVarInitKind::Zero:3616 TrivialAutoVarInit = "zero";3617 break;3618 }3619 3620 if (!TrivialAutoVarInit.empty()) {3621 CmdArgs.push_back(3622 Args.MakeArgString("-ftrivial-auto-var-init=" + TrivialAutoVarInit));3623 }3624 3625 if (Arg *A =3626 Args.getLastArg(options::OPT_ftrivial_auto_var_init_stop_after)) {3627 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||3628 StringRef(3629 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==3630 "uninitialized")3631 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_missing_dependency);3632 A->claim();3633 StringRef Val = A->getValue();3634 if (std::stoi(Val.str()) <= 0)3635 D.Diag(diag::err_drv_trivial_auto_var_init_stop_after_invalid_value);3636 CmdArgs.push_back(3637 Args.MakeArgString("-ftrivial-auto-var-init-stop-after=" + Val));3638 }3639 3640 if (Arg *A = Args.getLastArg(options::OPT_ftrivial_auto_var_init_max_size)) {3641 if (!Args.hasArg(options::OPT_ftrivial_auto_var_init) ||3642 StringRef(3643 Args.getLastArg(options::OPT_ftrivial_auto_var_init)->getValue()) ==3644 "uninitialized")3645 D.Diag(diag::err_drv_trivial_auto_var_init_max_size_missing_dependency);3646 A->claim();3647 StringRef Val = A->getValue();3648 if (std::stoi(Val.str()) <= 0)3649 D.Diag(diag::err_drv_trivial_auto_var_init_max_size_invalid_value);3650 CmdArgs.push_back(3651 Args.MakeArgString("-ftrivial-auto-var-init-max-size=" + Val));3652 }3653}3654 3655static void RenderOpenCLOptions(const ArgList &Args, ArgStringList &CmdArgs,3656 types::ID InputType) {3657 // cl-denorms-are-zero is not forwarded. It is translated into a generic flag3658 // for denormal flushing handling based on the target.3659 const unsigned ForwardedArguments[] = {3660 options::OPT_cl_opt_disable,3661 options::OPT_cl_strict_aliasing,3662 options::OPT_cl_single_precision_constant,3663 options::OPT_cl_finite_math_only,3664 options::OPT_cl_kernel_arg_info,3665 options::OPT_cl_unsafe_math_optimizations,3666 options::OPT_cl_fast_relaxed_math,3667 options::OPT_cl_mad_enable,3668 options::OPT_cl_no_signed_zeros,3669 options::OPT_cl_fp32_correctly_rounded_divide_sqrt,3670 options::OPT_cl_uniform_work_group_size3671 };3672 3673 if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {3674 std::string CLStdStr = std::string("-cl-std=") + A->getValue();3675 CmdArgs.push_back(Args.MakeArgString(CLStdStr));3676 } else if (Arg *A = Args.getLastArg(options::OPT_cl_ext_EQ)) {3677 std::string CLExtStr = std::string("-cl-ext=") + A->getValue();3678 CmdArgs.push_back(Args.MakeArgString(CLExtStr));3679 }3680 3681 if (Args.hasArg(options::OPT_cl_finite_math_only)) {3682 CmdArgs.push_back("-menable-no-infs");3683 CmdArgs.push_back("-menable-no-nans");3684 }3685 3686 for (const auto &Arg : ForwardedArguments)3687 if (const auto *A = Args.getLastArg(Arg))3688 CmdArgs.push_back(Args.MakeArgString(A->getOption().getPrefixedName()));3689 3690 // Only add the default headers if we are compiling OpenCL sources.3691 if ((types::isOpenCL(InputType) ||3692 (Args.hasArg(options::OPT_cl_std_EQ) && types::isSrcFile(InputType))) &&3693 !Args.hasArg(options::OPT_cl_no_stdinc)) {3694 CmdArgs.push_back("-finclude-default-header");3695 CmdArgs.push_back("-fdeclare-opencl-builtins");3696 }3697}3698 3699static void RenderHLSLOptions(const ArgList &Args, ArgStringList &CmdArgs,3700 types::ID InputType) {3701 const unsigned ForwardedArguments[] = {3702 options::OPT_dxil_validator_version,3703 options::OPT_res_may_alias,3704 options::OPT_D,3705 options::OPT_I,3706 options::OPT_O,3707 options::OPT_emit_llvm,3708 options::OPT_emit_obj,3709 options::OPT_disable_llvm_passes,3710 options::OPT_fnative_half_type,3711 options::OPT_fnative_int16_type,3712 options::OPT_hlsl_entrypoint,3713 options::OPT_fdx_rootsignature_define,3714 options::OPT_fdx_rootsignature_version,3715 options::OPT_fhlsl_spv_use_unknown_image_format,3716 options::OPT_fhlsl_spv_enable_maximal_reconvergence};3717 if (!types::isHLSL(InputType))3718 return;3719 for (const auto &Arg : ForwardedArguments)3720 if (const auto *A = Args.getLastArg(Arg))3721 A->renderAsInput(Args, CmdArgs);3722 // Add the default headers if dxc_no_stdinc is not set.3723 if (!Args.hasArg(options::OPT_dxc_no_stdinc) &&3724 !Args.hasArg(options::OPT_nostdinc))3725 CmdArgs.push_back("-finclude-default-header");3726}3727 3728static void RenderOpenACCOptions(const Driver &D, const ArgList &Args,3729 ArgStringList &CmdArgs, types::ID InputType) {3730 if (!Args.hasArg(options::OPT_fopenacc))3731 return;3732 3733 CmdArgs.push_back("-fopenacc");3734}3735 3736static void RenderBuiltinOptions(const ToolChain &TC, const llvm::Triple &T,3737 const ArgList &Args, ArgStringList &CmdArgs) {3738 // -fbuiltin is default unless -mkernel is used.3739 bool UseBuiltins =3740 Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,3741 !Args.hasArg(options::OPT_mkernel));3742 if (!UseBuiltins)3743 CmdArgs.push_back("-fno-builtin");3744 3745 // -ffreestanding implies -fno-builtin.3746 if (Args.hasArg(options::OPT_ffreestanding))3747 UseBuiltins = false;3748 3749 // Process the -fno-builtin-* options.3750 for (const Arg *A : Args.filtered(options::OPT_fno_builtin_)) {3751 A->claim();3752 3753 // If -fno-builtin is specified, then there's no need to pass the option to3754 // the frontend.3755 if (UseBuiltins)3756 A->render(Args, CmdArgs);3757 }3758}3759 3760bool Driver::getDefaultModuleCachePath(SmallVectorImpl<char> &Result) {3761 if (const char *Str = std::getenv("CLANG_MODULE_CACHE_PATH")) {3762 Twine Path{Str};3763 Path.toVector(Result);3764 return Path.getSingleStringRef() != "";3765 }3766 if (llvm::sys::path::cache_directory(Result)) {3767 llvm::sys::path::append(Result, "clang");3768 llvm::sys::path::append(Result, "ModuleCache");3769 return true;3770 }3771 return false;3772}3773 3774llvm::SmallString<256>3775clang::driver::tools::getCXX20NamedModuleOutputPath(const ArgList &Args,3776 const char *BaseInput) {3777 if (Arg *ModuleOutputEQ = Args.getLastArg(options::OPT_fmodule_output_EQ))3778 return StringRef(ModuleOutputEQ->getValue());3779 3780 SmallString<256> OutputPath;3781 if (Arg *FinalOutput = Args.getLastArg(options::OPT_o);3782 FinalOutput && Args.hasArg(options::OPT_c))3783 OutputPath = FinalOutput->getValue();3784 else3785 OutputPath = BaseInput;3786 3787 const char *Extension = types::getTypeTempSuffix(types::TY_ModuleFile);3788 llvm::sys::path::replace_extension(OutputPath, Extension);3789 return OutputPath;3790}3791 3792static bool RenderModulesOptions(Compilation &C, const Driver &D,3793 const ArgList &Args, const InputInfo &Input,3794 const InputInfo &Output, bool HaveStd20,3795 ArgStringList &CmdArgs) {3796 const bool IsCXX = types::isCXX(Input.getType());3797 const bool HaveStdCXXModules = IsCXX && HaveStd20;3798 bool HaveModules = HaveStdCXXModules;3799 3800 // -fmodules enables the use of precompiled modules (off by default).3801 // Users can pass -fno-cxx-modules to turn off modules support for3802 // C++/Objective-C++ programs.3803 const bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,3804 options::OPT_fno_cxx_modules, true);3805 bool HaveClangModules = false;3806 if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {3807 if (AllowedInCXX || !IsCXX) {3808 CmdArgs.push_back("-fmodules");3809 HaveClangModules = true;3810 }3811 }3812 3813 HaveModules |= HaveClangModules;3814 3815 if (HaveModules && !AllowedInCXX)3816 CmdArgs.push_back("-fno-cxx-modules");3817 3818 // -fmodule-maps enables implicit reading of module map files. By default,3819 // this is enabled if we are using Clang's flavor of precompiled modules.3820 if (Args.hasFlag(options::OPT_fimplicit_module_maps,3821 options::OPT_fno_implicit_module_maps, HaveClangModules))3822 CmdArgs.push_back("-fimplicit-module-maps");3823 3824 // -fmodules-decluse checks that modules used are declared so (off by default)3825 Args.addOptInFlag(CmdArgs, options::OPT_fmodules_decluse,3826 options::OPT_fno_modules_decluse);3827 3828 // -fmodules-strict-decluse is like -fmodule-decluse, but also checks that3829 // all #included headers are part of modules.3830 if (Args.hasFlag(options::OPT_fmodules_strict_decluse,3831 options::OPT_fno_modules_strict_decluse, false))3832 CmdArgs.push_back("-fmodules-strict-decluse");3833 3834 Args.addOptOutFlag(CmdArgs, options::OPT_fmodulemap_allow_subdirectory_search,3835 options::OPT_fno_modulemap_allow_subdirectory_search);3836 3837 // -fno-implicit-modules turns off implicitly compiling modules on demand.3838 bool ImplicitModules = false;3839 if (!Args.hasFlag(options::OPT_fimplicit_modules,3840 options::OPT_fno_implicit_modules, HaveClangModules)) {3841 if (HaveModules)3842 CmdArgs.push_back("-fno-implicit-modules");3843 } else if (HaveModules) {3844 ImplicitModules = true;3845 // -fmodule-cache-path specifies where our implicitly-built module files3846 // should be written.3847 SmallString<128> Path;3848 if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))3849 Path = A->getValue();3850 3851 bool HasPath = true;3852 if (C.isForDiagnostics()) {3853 // When generating crash reports, we want to emit the modules along with3854 // the reproduction sources, so we ignore any provided module path.3855 Path = Output.getFilename();3856 llvm::sys::path::replace_extension(Path, ".cache");3857 llvm::sys::path::append(Path, "modules");3858 } else if (Path.empty()) {3859 // No module path was provided: use the default.3860 HasPath = Driver::getDefaultModuleCachePath(Path);3861 }3862 3863 // `HasPath` will only be false if getDefaultModuleCachePath() fails.3864 // That being said, that failure is unlikely and not caching is harmless.3865 if (HasPath) {3866 const char Arg[] = "-fmodules-cache-path=";3867 Path.insert(Path.begin(), Arg, Arg + strlen(Arg));3868 CmdArgs.push_back(Args.MakeArgString(Path));3869 }3870 }3871 3872 if (HaveModules) {3873 if (Args.hasFlag(options::OPT_fprebuilt_implicit_modules,3874 options::OPT_fno_prebuilt_implicit_modules, false))3875 CmdArgs.push_back("-fprebuilt-implicit-modules");3876 if (Args.hasFlag(options::OPT_fmodules_validate_input_files_content,3877 options::OPT_fno_modules_validate_input_files_content,3878 false))3879 CmdArgs.push_back("-fvalidate-ast-input-files-content");3880 }3881 3882 // -fmodule-name specifies the module that is currently being built (or3883 // used for header checking by -fmodule-maps).3884 Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);3885 3886 // -fmodule-map-file can be used to specify files containing module3887 // definitions.3888 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);3889 3890 // -fbuiltin-module-map can be used to load the clang3891 // builtin headers modulemap file.3892 if (Args.hasArg(options::OPT_fbuiltin_module_map)) {3893 SmallString<128> BuiltinModuleMap(D.ResourceDir);3894 llvm::sys::path::append(BuiltinModuleMap, "include");3895 llvm::sys::path::append(BuiltinModuleMap, "module.modulemap");3896 if (llvm::sys::fs::exists(BuiltinModuleMap))3897 CmdArgs.push_back(3898 Args.MakeArgString("-fmodule-map-file=" + BuiltinModuleMap));3899 }3900 3901 // The -fmodule-file=<name>=<file> form specifies the mapping of module3902 // names to precompiled module files (the module is loaded only if used).3903 // The -fmodule-file=<file> form can be used to unconditionally load3904 // precompiled module files (whether used or not).3905 if (HaveModules || Input.getType() == clang::driver::types::TY_ModuleFile) {3906 Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);3907 3908 // -fprebuilt-module-path specifies where to load the prebuilt module files.3909 for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path)) {3910 CmdArgs.push_back(Args.MakeArgString(3911 std::string("-fprebuilt-module-path=") + A->getValue()));3912 A->claim();3913 }3914 } else3915 Args.ClaimAllArgs(options::OPT_fmodule_file);3916 3917 // When building modules and generating crashdumps, we need to dump a module3918 // dependency VFS alongside the output.3919 if (HaveClangModules && C.isForDiagnostics()) {3920 SmallString<128> VFSDir(Output.getFilename());3921 llvm::sys::path::replace_extension(VFSDir, ".cache");3922 // Add the cache directory as a temp so the crash diagnostics pick it up.3923 C.addTempFile(Args.MakeArgString(VFSDir));3924 3925 llvm::sys::path::append(VFSDir, "vfs");3926 CmdArgs.push_back("-module-dependency-dir");3927 CmdArgs.push_back(Args.MakeArgString(VFSDir));3928 }3929 3930 if (HaveClangModules)3931 Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);3932 3933 // Pass through all -fmodules-ignore-macro arguments.3934 Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);3935 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);3936 Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);3937 3938 if (HaveClangModules) {3939 Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);3940 3941 if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {3942 if (Args.hasArg(options::OPT_fbuild_session_timestamp))3943 D.Diag(diag::err_drv_argument_not_allowed_with)3944 << A->getAsString(Args) << "-fbuild-session-timestamp";3945 3946 llvm::sys::fs::file_status Status;3947 if (llvm::sys::fs::status(A->getValue(), Status))3948 D.Diag(diag::err_drv_no_such_file) << A->getValue();3949 CmdArgs.push_back(Args.MakeArgString(3950 "-fbuild-session-timestamp=" +3951 Twine((uint64_t)std::chrono::duration_cast<std::chrono::seconds>(3952 Status.getLastModificationTime().time_since_epoch())3953 .count())));3954 }3955 3956 if (Args.getLastArg(3957 options::OPT_fmodules_validate_once_per_build_session)) {3958 if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,3959 options::OPT_fbuild_session_file))3960 D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);3961 3962 Args.AddLastArg(CmdArgs,3963 options::OPT_fmodules_validate_once_per_build_session);3964 }3965 3966 if (Args.hasFlag(options::OPT_fmodules_validate_system_headers,3967 options::OPT_fno_modules_validate_system_headers,3968 ImplicitModules))3969 CmdArgs.push_back("-fmodules-validate-system-headers");3970 3971 Args.AddLastArg(CmdArgs,3972 options::OPT_fmodules_disable_diagnostic_validation);3973 } else {3974 Args.ClaimAllArgs(options::OPT_fbuild_session_timestamp);3975 Args.ClaimAllArgs(options::OPT_fbuild_session_file);3976 Args.ClaimAllArgs(options::OPT_fmodules_validate_once_per_build_session);3977 Args.ClaimAllArgs(options::OPT_fmodules_validate_system_headers);3978 Args.ClaimAllArgs(options::OPT_fno_modules_validate_system_headers);3979 Args.ClaimAllArgs(options::OPT_fmodules_disable_diagnostic_validation);3980 }3981 3982 // FIXME: We provisionally don't check ODR violations for decls in the global3983 // module fragment.3984 CmdArgs.push_back("-fskip-odr-check-in-gmf");3985 3986 if (Input.getType() == driver::types::TY_CXXModule ||3987 Input.getType() == driver::types::TY_PP_CXXModule) {3988 if (!Args.hasArg(options::OPT_fno_modules_reduced_bmi))3989 CmdArgs.push_back("-fmodules-reduced-bmi");3990 3991 if (Args.hasArg(options::OPT_fmodule_output_EQ))3992 Args.AddLastArg(CmdArgs, options::OPT_fmodule_output_EQ);3993 else if (!Args.hasArg(options::OPT__precompile) ||3994 Args.hasArg(options::OPT_fmodule_output))3995 // If --precompile is specified, we will always generate a module file if3996 // we're compiling an importable module unit. This is fine even if the3997 // compilation process won't reach the point of generating the module file3998 // (e.g., in the preprocessing mode), since the attached flag3999 // '-fmodule-output' is useless.4000 //4001 // But if '--precompile' is specified, it might be annoying to always4002 // generate the module file as '--precompile' will generate the module4003 // file anyway.4004 CmdArgs.push_back(Args.MakeArgString(4005 "-fmodule-output=" +4006 getCXX20NamedModuleOutputPath(Args, Input.getBaseInput())));4007 }4008 4009 if (Args.hasArg(options::OPT_fmodules_reduced_bmi) &&4010 Args.hasArg(options::OPT__precompile) &&4011 (!Args.hasArg(options::OPT_o) ||4012 Args.getLastArg(options::OPT_o)->getValue() ==4013 getCXX20NamedModuleOutputPath(Args, Input.getBaseInput()))) {4014 D.Diag(diag::err_drv_reduced_module_output_overrided);4015 }4016 4017 // Noop if we see '-fmodules-reduced-bmi' or `-fno-modules-reduced-bmi` with4018 // other translation units than module units. This is more user friendly to4019 // allow end uers to enable this feature without asking for help from build4020 // systems.4021 Args.ClaimAllArgs(options::OPT_fmodules_reduced_bmi);4022 Args.ClaimAllArgs(options::OPT_fno_modules_reduced_bmi);4023 4024 // We need to include the case the input file is a module file here.4025 // Since the default compilation model for C++ module interface unit will4026 // create temporary module file and compile the temporary module file4027 // to get the object file. Then the `-fmodule-output` flag will be4028 // brought to the second compilation process. So we have to claim it for4029 // the case too.4030 if (Input.getType() == driver::types::TY_CXXModule ||4031 Input.getType() == driver::types::TY_PP_CXXModule ||4032 Input.getType() == driver::types::TY_ModuleFile) {4033 Args.ClaimAllArgs(options::OPT_fmodule_output);4034 Args.ClaimAllArgs(options::OPT_fmodule_output_EQ);4035 }4036 4037 if (Args.hasArg(options::OPT_fmodules_embed_all_files))4038 CmdArgs.push_back("-fmodules-embed-all-files");4039 4040 return HaveModules;4041}4042 4043static void RenderCharacterOptions(const ArgList &Args, const llvm::Triple &T,4044 ArgStringList &CmdArgs) {4045 // -fsigned-char is default.4046 if (const Arg *A = Args.getLastArg(options::OPT_fsigned_char,4047 options::OPT_fno_signed_char,4048 options::OPT_funsigned_char,4049 options::OPT_fno_unsigned_char)) {4050 if (A->getOption().matches(options::OPT_funsigned_char) ||4051 A->getOption().matches(options::OPT_fno_signed_char)) {4052 CmdArgs.push_back("-fno-signed-char");4053 }4054 } else if (!isSignedCharDefault(T)) {4055 CmdArgs.push_back("-fno-signed-char");4056 }4057 4058 // The default depends on the language standard.4059 Args.AddLastArg(CmdArgs, options::OPT_fchar8__t, options::OPT_fno_char8__t);4060 4061 if (const Arg *A = Args.getLastArg(options::OPT_fshort_wchar,4062 options::OPT_fno_short_wchar)) {4063 if (A->getOption().matches(options::OPT_fshort_wchar)) {4064 CmdArgs.push_back("-fwchar-type=short");4065 CmdArgs.push_back("-fno-signed-wchar");4066 } else {4067 bool IsARM = T.isARM() || T.isThumb() || T.isAArch64();4068 CmdArgs.push_back("-fwchar-type=int");4069 if (T.isOSzOS() ||4070 (IsARM && !(T.isOSWindows() || T.isOSNetBSD() || T.isOSOpenBSD())))4071 CmdArgs.push_back("-fno-signed-wchar");4072 else4073 CmdArgs.push_back("-fsigned-wchar");4074 }4075 } else if (T.isOSzOS())4076 CmdArgs.push_back("-fno-signed-wchar");4077}4078 4079static void RenderObjCOptions(const ToolChain &TC, const Driver &D,4080 const llvm::Triple &T, const ArgList &Args,4081 ObjCRuntime &Runtime, bool InferCovariantReturns,4082 const InputInfo &Input, ArgStringList &CmdArgs) {4083 const llvm::Triple::ArchType Arch = TC.getArch();4084 4085 // -fobjc-dispatch-method is only relevant with the nonfragile-abi, and legacy4086 // is the default. Except for deployment target of 10.5, next runtime is4087 // always legacy dispatch and -fno-objc-legacy-dispatch gets ignored silently.4088 if (Runtime.isNonFragile()) {4089 if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,4090 options::OPT_fno_objc_legacy_dispatch,4091 Runtime.isLegacyDispatchDefaultForArch(Arch))) {4092 if (TC.UseObjCMixedDispatch())4093 CmdArgs.push_back("-fobjc-dispatch-method=mixed");4094 else4095 CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");4096 }4097 }4098 4099 // When ObjectiveC legacy runtime is in effect on MacOSX, turn on the option4100 // to do Array/Dictionary subscripting by default.4101 if (Arch == llvm::Triple::x86 && T.isMacOSX() &&4102 Runtime.getKind() == ObjCRuntime::FragileMacOSX && Runtime.isNeXTFamily())4103 CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");4104 4105 // Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.4106 // NOTE: This logic is duplicated in ToolChains.cpp.4107 if (isObjCAutoRefCount(Args)) {4108 TC.CheckObjCARC();4109 4110 CmdArgs.push_back("-fobjc-arc");4111 4112 // FIXME: It seems like this entire block, and several around it should be4113 // wrapped in isObjC, but for now we just use it here as this is where it4114 // was being used previously.4115 if (types::isCXX(Input.getType()) && types::isObjC(Input.getType())) {4116 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)4117 CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");4118 else4119 CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");4120 }4121 4122 // Allow the user to enable full exceptions code emission.4123 // We default off for Objective-C, on for Objective-C++.4124 if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,4125 options::OPT_fno_objc_arc_exceptions,4126 /*Default=*/types::isCXX(Input.getType())))4127 CmdArgs.push_back("-fobjc-arc-exceptions");4128 }4129 4130 // Silence warning for full exception code emission options when explicitly4131 // set to use no ARC.4132 if (Args.hasArg(options::OPT_fno_objc_arc)) {4133 Args.ClaimAllArgs(options::OPT_fobjc_arc_exceptions);4134 Args.ClaimAllArgs(options::OPT_fno_objc_arc_exceptions);4135 }4136 4137 // Allow the user to control whether messages can be converted to runtime4138 // functions.4139 if (types::isObjC(Input.getType())) {4140 auto *Arg = Args.getLastArg(4141 options::OPT_fobjc_convert_messages_to_runtime_calls,4142 options::OPT_fno_objc_convert_messages_to_runtime_calls);4143 if (Arg &&4144 Arg->getOption().matches(4145 options::OPT_fno_objc_convert_messages_to_runtime_calls))4146 CmdArgs.push_back("-fno-objc-convert-messages-to-runtime-calls");4147 }4148 4149 // -fobjc-infer-related-result-type is the default, except in the Objective-C4150 // rewriter.4151 if (InferCovariantReturns)4152 CmdArgs.push_back("-fno-objc-infer-related-result-type");4153 4154 // Pass down -fobjc-weak or -fno-objc-weak if present.4155 if (types::isObjC(Input.getType())) {4156 auto WeakArg =4157 Args.getLastArg(options::OPT_fobjc_weak, options::OPT_fno_objc_weak);4158 if (!WeakArg) {4159 // nothing to do4160 } else if (!Runtime.allowsWeak()) {4161 if (WeakArg->getOption().matches(options::OPT_fobjc_weak))4162 D.Diag(diag::err_objc_weak_unsupported);4163 } else {4164 WeakArg->render(Args, CmdArgs);4165 }4166 }4167 4168 if (Args.hasArg(options::OPT_fobjc_disable_direct_methods_for_testing))4169 CmdArgs.push_back("-fobjc-disable-direct-methods-for-testing");4170}4171 4172static void RenderDiagnosticsOptions(const Driver &D, const ArgList &Args,4173 ArgStringList &CmdArgs) {4174 bool CaretDefault = true;4175 bool ColumnDefault = true;4176 4177 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_diagnostics_classic,4178 options::OPT__SLASH_diagnostics_column,4179 options::OPT__SLASH_diagnostics_caret)) {4180 switch (A->getOption().getID()) {4181 case options::OPT__SLASH_diagnostics_caret:4182 CaretDefault = true;4183 ColumnDefault = true;4184 break;4185 case options::OPT__SLASH_diagnostics_column:4186 CaretDefault = false;4187 ColumnDefault = true;4188 break;4189 case options::OPT__SLASH_diagnostics_classic:4190 CaretDefault = false;4191 ColumnDefault = false;4192 break;4193 }4194 }4195 4196 // -fcaret-diagnostics is default.4197 if (!Args.hasFlag(options::OPT_fcaret_diagnostics,4198 options::OPT_fno_caret_diagnostics, CaretDefault))4199 CmdArgs.push_back("-fno-caret-diagnostics");4200 4201 Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_fixit_info,4202 options::OPT_fno_diagnostics_fixit_info);4203 Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_show_option,4204 options::OPT_fno_diagnostics_show_option);4205 4206 if (const Arg *A =4207 Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {4208 CmdArgs.push_back("-fdiagnostics-show-category");4209 CmdArgs.push_back(A->getValue());4210 }4211 4212 Args.addOptInFlag(CmdArgs, options::OPT_fdiagnostics_show_hotness,4213 options::OPT_fno_diagnostics_show_hotness);4214 4215 if (const Arg *A =4216 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {4217 std::string Opt =4218 std::string("-fdiagnostics-hotness-threshold=") + A->getValue();4219 CmdArgs.push_back(Args.MakeArgString(Opt));4220 }4221 4222 if (const Arg *A =4223 Args.getLastArg(options::OPT_fdiagnostics_misexpect_tolerance_EQ)) {4224 std::string Opt =4225 std::string("-fdiagnostics-misexpect-tolerance=") + A->getValue();4226 CmdArgs.push_back(Args.MakeArgString(Opt));4227 }4228 4229 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {4230 CmdArgs.push_back("-fdiagnostics-format");4231 CmdArgs.push_back(A->getValue());4232 if (StringRef(A->getValue()) == "sarif" ||4233 StringRef(A->getValue()) == "SARIF")4234 D.Diag(diag::warn_drv_sarif_format_unstable);4235 }4236 4237 if (const Arg *A = Args.getLastArg(4238 options::OPT_fdiagnostics_show_note_include_stack,4239 options::OPT_fno_diagnostics_show_note_include_stack)) {4240 const Option &O = A->getOption();4241 if (O.matches(options::OPT_fdiagnostics_show_note_include_stack))4242 CmdArgs.push_back("-fdiagnostics-show-note-include-stack");4243 else4244 CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");4245 }4246 4247 handleColorDiagnosticsArgs(D, Args, CmdArgs);4248 4249 if (Args.hasArg(options::OPT_fansi_escape_codes))4250 CmdArgs.push_back("-fansi-escape-codes");4251 4252 Args.addOptOutFlag(CmdArgs, options::OPT_fshow_source_location,4253 options::OPT_fno_show_source_location);4254 4255 Args.addOptOutFlag(CmdArgs, options::OPT_fdiagnostics_show_line_numbers,4256 options::OPT_fno_diagnostics_show_line_numbers);4257 4258 if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))4259 CmdArgs.push_back("-fdiagnostics-absolute-paths");4260 4261 if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,4262 ColumnDefault))4263 CmdArgs.push_back("-fno-show-column");4264 4265 Args.addOptOutFlag(CmdArgs, options::OPT_fspell_checking,4266 options::OPT_fno_spell_checking);4267 4268 Args.addLastArg(CmdArgs, options::OPT_warning_suppression_mappings_EQ);4269}4270 4271static void renderDwarfFormat(const Driver &D, const llvm::Triple &T,4272 const ArgList &Args, ArgStringList &CmdArgs,4273 unsigned DwarfVersion) {4274 auto *DwarfFormatArg =4275 Args.getLastArg(options::OPT_gdwarf64, options::OPT_gdwarf32);4276 if (!DwarfFormatArg)4277 return;4278 4279 if (DwarfFormatArg->getOption().matches(options::OPT_gdwarf64)) {4280 if (DwarfVersion < 3)4281 D.Diag(diag::err_drv_argument_only_allowed_with)4282 << DwarfFormatArg->getAsString(Args) << "DWARFv3 or greater";4283 else if (!T.isArch64Bit())4284 D.Diag(diag::err_drv_argument_only_allowed_with)4285 << DwarfFormatArg->getAsString(Args) << "64 bit architecture";4286 else if (!T.isOSBinFormatELF())4287 D.Diag(diag::err_drv_argument_only_allowed_with)4288 << DwarfFormatArg->getAsString(Args) << "ELF platforms";4289 }4290 4291 DwarfFormatArg->render(Args, CmdArgs);4292}4293 4294static void4295renderDebugOptions(const ToolChain &TC, const Driver &D, const llvm::Triple &T,4296 const ArgList &Args, types::ID InputType,4297 ArgStringList &CmdArgs, const InputInfo &Output,4298 llvm::codegenoptions::DebugInfoKind &DebugInfoKind,4299 DwarfFissionKind &DwarfFission) {4300 bool IRInput = isLLVMIR(InputType);4301 bool PlainCOrCXX = isDerivedFromC(InputType) && !isCuda(InputType) &&4302 !isHIP(InputType) && !isObjC(InputType) &&4303 !isOpenCL(InputType);4304 4305 if (Args.hasFlag(options::OPT_fdebug_info_for_profiling,4306 options::OPT_fno_debug_info_for_profiling, false) &&4307 checkDebugInfoOption(4308 Args.getLastArg(options::OPT_fdebug_info_for_profiling), Args, D, TC))4309 CmdArgs.push_back("-fdebug-info-for-profiling");4310 4311 // The 'g' groups options involve a somewhat intricate sequence of decisions4312 // about what to pass from the driver to the frontend, but by the time they4313 // reach cc1 they've been factored into three well-defined orthogonal choices:4314 // * what level of debug info to generate4315 // * what dwarf version to write4316 // * what debugger tuning to use4317 // This avoids having to monkey around further in cc1 other than to disable4318 // codeview if not running in a Windows environment. Perhaps even that4319 // decision should be made in the driver as well though.4320 llvm::DebuggerKind DebuggerTuning = TC.getDefaultDebuggerTuning();4321 4322 bool SplitDWARFInlining =4323 Args.hasFlag(options::OPT_fsplit_dwarf_inlining,4324 options::OPT_fno_split_dwarf_inlining, false);4325 4326 // Normally -gsplit-dwarf is only useful with -gN. For IR input, Clang does4327 // object file generation and no IR generation, -gN should not be needed. So4328 // allow -gsplit-dwarf with either -gN or IR input.4329 if (IRInput || Args.hasArg(options::OPT_g_Group)) {4330 // FIXME: -gsplit-dwarf on AIX is currently unimplemented.4331 if (TC.getTriple().isOSAIX() && Args.hasArg(options::OPT_gsplit_dwarf)) {4332 D.Diag(diag::err_drv_unsupported_opt_for_target)4333 << Args.getLastArg(options::OPT_gsplit_dwarf)->getSpelling()4334 << TC.getTriple().str();4335 return;4336 }4337 Arg *SplitDWARFArg;4338 DwarfFission = getDebugFissionKind(D, Args, SplitDWARFArg);4339 if (DwarfFission != DwarfFissionKind::None &&4340 !checkDebugInfoOption(SplitDWARFArg, Args, D, TC)) {4341 DwarfFission = DwarfFissionKind::None;4342 SplitDWARFInlining = false;4343 }4344 }4345 if (const Arg *A = Args.getLastArg(options::OPT_g_Group)) {4346 DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;4347 4348 // If the last option explicitly specified a debug-info level, use it.4349 if (checkDebugInfoOption(A, Args, D, TC) &&4350 A->getOption().matches(options::OPT_gN_Group)) {4351 DebugInfoKind = debugLevelToInfoKind(*A);4352 // For -g0 or -gline-tables-only, drop -gsplit-dwarf. This gets a bit more4353 // complicated if you've disabled inline info in the skeleton CUs4354 // (SplitDWARFInlining) - then there's value in composing split-dwarf and4355 // line-tables-only, so let those compose naturally in that case.4356 if (DebugInfoKind == llvm::codegenoptions::NoDebugInfo ||4357 DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly ||4358 (DebugInfoKind == llvm::codegenoptions::DebugLineTablesOnly &&4359 SplitDWARFInlining))4360 DwarfFission = DwarfFissionKind::None;4361 }4362 }4363 4364 // If a debugger tuning argument appeared, remember it.4365 bool HasDebuggerTuning = false;4366 if (const Arg *A =4367 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {4368 HasDebuggerTuning = true;4369 if (checkDebugInfoOption(A, Args, D, TC)) {4370 if (A->getOption().matches(options::OPT_glldb))4371 DebuggerTuning = llvm::DebuggerKind::LLDB;4372 else if (A->getOption().matches(options::OPT_gsce))4373 DebuggerTuning = llvm::DebuggerKind::SCE;4374 else if (A->getOption().matches(options::OPT_gdbx))4375 DebuggerTuning = llvm::DebuggerKind::DBX;4376 else4377 DebuggerTuning = llvm::DebuggerKind::GDB;4378 }4379 }4380 4381 // If a -gdwarf argument appeared, remember it.4382 bool EmitDwarf = false;4383 if (const Arg *A = getDwarfNArg(Args))4384 EmitDwarf = checkDebugInfoOption(A, Args, D, TC);4385 4386 bool EmitCodeView = false;4387 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview))4388 EmitCodeView = checkDebugInfoOption(A, Args, D, TC);4389 4390 // If the user asked for debug info but did not explicitly specify -gcodeview4391 // or -gdwarf, ask the toolchain for the default format.4392 if (!EmitCodeView && !EmitDwarf &&4393 DebugInfoKind != llvm::codegenoptions::NoDebugInfo) {4394 switch (TC.getDefaultDebugFormat()) {4395 case llvm::codegenoptions::DIF_CodeView:4396 EmitCodeView = true;4397 break;4398 case llvm::codegenoptions::DIF_DWARF:4399 EmitDwarf = true;4400 break;4401 }4402 }4403 4404 unsigned RequestedDWARFVersion = 0; // DWARF version requested by the user4405 unsigned EffectiveDWARFVersion = 0; // DWARF version TC can generate. It may4406 // be lower than what the user wanted.4407 if (EmitDwarf) {4408 RequestedDWARFVersion = getDwarfVersion(TC, Args);4409 // Clamp effective DWARF version to the max supported by the toolchain.4410 EffectiveDWARFVersion =4411 std::min(RequestedDWARFVersion, TC.getMaxDwarfVersion());4412 } else {4413 Args.ClaimAllArgs(options::OPT_fdebug_default_version);4414 }4415 4416 // -gline-directives-only supported only for the DWARF debug info.4417 if (RequestedDWARFVersion == 0 &&4418 DebugInfoKind == llvm::codegenoptions::DebugDirectivesOnly)4419 DebugInfoKind = llvm::codegenoptions::NoDebugInfo;4420 4421 // strict DWARF is set to false by default. But for DBX, we need it to be set4422 // as true by default.4423 if (const Arg *A = Args.getLastArg(options::OPT_gstrict_dwarf))4424 (void)checkDebugInfoOption(A, Args, D, TC);4425 if (Args.hasFlag(options::OPT_gstrict_dwarf, options::OPT_gno_strict_dwarf,4426 DebuggerTuning == llvm::DebuggerKind::DBX))4427 CmdArgs.push_back("-gstrict-dwarf");4428 4429 // And we handle flag -grecord-gcc-switches later with DWARFDebugFlags.4430 Args.ClaimAllArgs(options::OPT_g_flags_Group);4431 4432 // Column info is included by default for everything except SCE and4433 // CodeView if not use sampling PGO. Clang doesn't track end columns, just4434 // starting columns, which, in theory, is fine for CodeView (and PDB). In4435 // practice, however, the Microsoft debuggers don't handle missing end columns4436 // well, and the AIX debugger DBX also doesn't handle the columns well, so4437 // it's better not to include any column info.4438 if (const Arg *A = Args.getLastArg(options::OPT_gcolumn_info))4439 (void)checkDebugInfoOption(A, Args, D, TC);4440 if (!Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,4441 !(EmitCodeView && !getLastProfileSampleUseArg(Args)) &&4442 (DebuggerTuning != llvm::DebuggerKind::SCE &&4443 DebuggerTuning != llvm::DebuggerKind::DBX)))4444 CmdArgs.push_back("-gno-column-info");4445 4446 if (!Args.hasFlag(options::OPT_gcall_site_info,4447 options::OPT_gno_call_site_info, true))4448 CmdArgs.push_back("-gno-call-site-info");4449 4450 // FIXME: Move backend command line options to the module.4451 if (Args.hasFlag(options::OPT_gmodules, options::OPT_gno_modules, false)) {4452 // If -gline-tables-only or -gline-directives-only is the last option it4453 // wins.4454 if (checkDebugInfoOption(Args.getLastArg(options::OPT_gmodules), Args, D,4455 TC)) {4456 if (DebugInfoKind != llvm::codegenoptions::DebugLineTablesOnly &&4457 DebugInfoKind != llvm::codegenoptions::DebugDirectivesOnly) {4458 DebugInfoKind = llvm::codegenoptions::DebugInfoConstructor;4459 CmdArgs.push_back("-dwarf-ext-refs");4460 CmdArgs.push_back("-fmodule-format=obj");4461 }4462 }4463 }4464 4465 if (T.isOSBinFormatELF() && SplitDWARFInlining)4466 CmdArgs.push_back("-fsplit-dwarf-inlining");4467 4468 // After we've dealt with all combinations of things that could4469 // make DebugInfoKind be other than None or DebugLineTablesOnly,4470 // figure out if we need to "upgrade" it to standalone debug info.4471 // We parse these two '-f' options whether or not they will be used,4472 // to claim them even if you wrote "-fstandalone-debug -gline-tables-only"4473 bool NeedFullDebug = Args.hasFlag(4474 options::OPT_fstandalone_debug, options::OPT_fno_standalone_debug,4475 DebuggerTuning == llvm::DebuggerKind::LLDB ||4476 TC.GetDefaultStandaloneDebug());4477 if (const Arg *A = Args.getLastArg(options::OPT_fstandalone_debug))4478 (void)checkDebugInfoOption(A, Args, D, TC);4479 4480 if (DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo ||4481 DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor) {4482 if (Args.hasFlag(options::OPT_fno_eliminate_unused_debug_types,4483 options::OPT_feliminate_unused_debug_types, false))4484 DebugInfoKind = llvm::codegenoptions::UnusedTypeInfo;4485 else if (NeedFullDebug)4486 DebugInfoKind = llvm::codegenoptions::FullDebugInfo;4487 }4488 4489 if (Args.hasFlag(options::OPT_gembed_source, options::OPT_gno_embed_source,4490 false)) {4491 // Source embedding is a vendor extension to DWARF v5. By now we have4492 // checked if a DWARF version was stated explicitly, and have otherwise4493 // fallen back to the target default, so if this is still not at least 54494 // we emit an error.4495 const Arg *A = Args.getLastArg(options::OPT_gembed_source);4496 if (RequestedDWARFVersion < 5)4497 D.Diag(diag::err_drv_argument_only_allowed_with)4498 << A->getAsString(Args) << "-gdwarf-5";4499 else if (EffectiveDWARFVersion < 5)4500 // The toolchain has reduced allowed dwarf version, so we can't enable4501 // -gembed-source.4502 D.Diag(diag::warn_drv_dwarf_version_limited_by_target)4503 << A->getAsString(Args) << TC.getTripleString() << 54504 << EffectiveDWARFVersion;4505 else if (checkDebugInfoOption(A, Args, D, TC))4506 CmdArgs.push_back("-gembed-source");4507 }4508 4509 // Enable Key Instructions by default if we're emitting DWARF, the language is4510 // plain C or C++, and optimisations are enabled.4511 Arg *OptLevel = Args.getLastArg(options::OPT_O_Group);4512 bool KeyInstructionsOnByDefault =4513 EmitDwarf && PlainCOrCXX && OptLevel &&4514 !OptLevel->getOption().matches(options::OPT_O0);4515 if (Args.hasFlag(options::OPT_gkey_instructions,4516 options::OPT_gno_key_instructions,4517 KeyInstructionsOnByDefault))4518 CmdArgs.push_back("-gkey-instructions");4519 4520 if (!Args.hasFlag(options::OPT_gstructor_decl_linkage_names,4521 options::OPT_gno_structor_decl_linkage_names, true))4522 CmdArgs.push_back("-gno-structor-decl-linkage-names");4523 4524 if (EmitCodeView) {4525 CmdArgs.push_back("-gcodeview");4526 4527 Args.addOptInFlag(CmdArgs, options::OPT_gcodeview_ghash,4528 options::OPT_gno_codeview_ghash);4529 4530 Args.addOptOutFlag(CmdArgs, options::OPT_gcodeview_command_line,4531 options::OPT_gno_codeview_command_line);4532 }4533 4534 Args.addOptOutFlag(CmdArgs, options::OPT_ginline_line_tables,4535 options::OPT_gno_inline_line_tables);4536 4537 // When emitting remarks, we need at least debug lines in the output.4538 if (willEmitRemarks(Args) &&4539 DebugInfoKind <= llvm::codegenoptions::DebugDirectivesOnly)4540 DebugInfoKind = llvm::codegenoptions::DebugLineTablesOnly;4541 4542 // Adjust the debug info kind for the given toolchain.4543 TC.adjustDebugInfoKind(DebugInfoKind, Args);4544 4545 // On AIX, the debugger tuning option can be omitted if it is not explicitly4546 // set.4547 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, EffectiveDWARFVersion,4548 T.isOSAIX() && !HasDebuggerTuning4549 ? llvm::DebuggerKind::Default4550 : DebuggerTuning);4551 4552 // -fdebug-macro turns on macro debug info generation.4553 if (Args.hasFlag(options::OPT_fdebug_macro, options::OPT_fno_debug_macro,4554 false))4555 if (checkDebugInfoOption(Args.getLastArg(options::OPT_fdebug_macro), Args,4556 D, TC))4557 CmdArgs.push_back("-debug-info-macro");4558 4559 // -ggnu-pubnames turns on gnu style pubnames in the backend.4560 const auto *PubnamesArg =4561 Args.getLastArg(options::OPT_ggnu_pubnames, options::OPT_gno_gnu_pubnames,4562 options::OPT_gpubnames, options::OPT_gno_pubnames);4563 if (DwarfFission != DwarfFissionKind::None ||4564 (PubnamesArg && checkDebugInfoOption(PubnamesArg, Args, D, TC))) {4565 const bool OptionSet =4566 (PubnamesArg &&4567 (PubnamesArg->getOption().matches(options::OPT_gpubnames) ||4568 PubnamesArg->getOption().matches(options::OPT_ggnu_pubnames)));4569 if ((DebuggerTuning != llvm::DebuggerKind::LLDB || OptionSet) &&4570 (!PubnamesArg ||4571 (!PubnamesArg->getOption().matches(options::OPT_gno_gnu_pubnames) &&4572 !PubnamesArg->getOption().matches(options::OPT_gno_pubnames))))4573 CmdArgs.push_back(PubnamesArg && PubnamesArg->getOption().matches(4574 options::OPT_gpubnames)4575 ? "-gpubnames"4576 : "-ggnu-pubnames");4577 }4578 const auto *SimpleTemplateNamesArg =4579 Args.getLastArg(options::OPT_gsimple_template_names,4580 options::OPT_gno_simple_template_names);4581 bool ForwardTemplateParams = DebuggerTuning == llvm::DebuggerKind::SCE;4582 if (SimpleTemplateNamesArg &&4583 checkDebugInfoOption(SimpleTemplateNamesArg, Args, D, TC)) {4584 const auto &Opt = SimpleTemplateNamesArg->getOption();4585 if (Opt.matches(options::OPT_gsimple_template_names)) {4586 ForwardTemplateParams = true;4587 CmdArgs.push_back("-gsimple-template-names=simple");4588 }4589 }4590 4591 // Emit DW_TAG_template_alias for template aliases? True by default for SCE.4592 bool UseDebugTemplateAlias =4593 DebuggerTuning == llvm::DebuggerKind::SCE && RequestedDWARFVersion >= 4;4594 if (const auto *DebugTemplateAlias = Args.getLastArg(4595 options::OPT_gtemplate_alias, options::OPT_gno_template_alias)) {4596 // DW_TAG_template_alias is only supported from DWARFv5 but if a user4597 // asks for it we should let them have it (if the target supports it).4598 if (checkDebugInfoOption(DebugTemplateAlias, Args, D, TC)) {4599 const auto &Opt = DebugTemplateAlias->getOption();4600 UseDebugTemplateAlias = Opt.matches(options::OPT_gtemplate_alias);4601 }4602 }4603 if (UseDebugTemplateAlias)4604 CmdArgs.push_back("-gtemplate-alias");4605 4606 if (const Arg *A = Args.getLastArg(options::OPT_gsrc_hash_EQ)) {4607 StringRef v = A->getValue();4608 CmdArgs.push_back(Args.MakeArgString("-gsrc-hash=" + v));4609 }4610 4611 Args.addOptInFlag(CmdArgs, options::OPT_fdebug_ranges_base_address,4612 options::OPT_fno_debug_ranges_base_address);4613 4614 // -gdwarf-aranges turns on the emission of the aranges section in the4615 // backend.4616 if (const Arg *A = Args.getLastArg(options::OPT_gdwarf_aranges);4617 A && checkDebugInfoOption(A, Args, D, TC)) {4618 CmdArgs.push_back("-mllvm");4619 CmdArgs.push_back("-generate-arange-section");4620 }4621 4622 Args.addOptInFlag(CmdArgs, options::OPT_fforce_dwarf_frame,4623 options::OPT_fno_force_dwarf_frame);4624 4625 bool EnableTypeUnits = false;4626 if (Args.hasFlag(options::OPT_fdebug_types_section,4627 options::OPT_fno_debug_types_section, false)) {4628 if (!(T.isOSBinFormatELF() || T.isOSBinFormatWasm())) {4629 D.Diag(diag::err_drv_unsupported_opt_for_target)4630 << Args.getLastArg(options::OPT_fdebug_types_section)4631 ->getAsString(Args)4632 << T.getTriple();4633 } else if (checkDebugInfoOption(4634 Args.getLastArg(options::OPT_fdebug_types_section), Args, D,4635 TC)) {4636 EnableTypeUnits = true;4637 CmdArgs.push_back("-mllvm");4638 CmdArgs.push_back("-generate-type-units");4639 }4640 }4641 4642 if (const Arg *A =4643 Args.getLastArg(options::OPT_gomit_unreferenced_methods,4644 options::OPT_gno_omit_unreferenced_methods))4645 (void)checkDebugInfoOption(A, Args, D, TC);4646 if (Args.hasFlag(options::OPT_gomit_unreferenced_methods,4647 options::OPT_gno_omit_unreferenced_methods, false) &&4648 (DebugInfoKind == llvm::codegenoptions::DebugInfoConstructor ||4649 DebugInfoKind == llvm::codegenoptions::LimitedDebugInfo) &&4650 !EnableTypeUnits) {4651 CmdArgs.push_back("-gomit-unreferenced-methods");4652 }4653 4654 // To avoid join/split of directory+filename, the integrated assembler prefers4655 // the directory form of .file on all DWARF versions. GNU as doesn't allow the4656 // form before DWARF v5.4657 if (!Args.hasFlag(options::OPT_fdwarf_directory_asm,4658 options::OPT_fno_dwarf_directory_asm,4659 TC.useIntegratedAs() || EffectiveDWARFVersion >= 5))4660 CmdArgs.push_back("-fno-dwarf-directory-asm");4661 4662 // Decide how to render forward declarations of template instantiations.4663 // SCE wants full descriptions, others just get them in the name.4664 if (ForwardTemplateParams)4665 CmdArgs.push_back("-debug-forward-template-params");4666 4667 // Do we need to explicitly import anonymous namespaces into the parent4668 // scope?4669 if (DebuggerTuning == llvm::DebuggerKind::SCE)4670 CmdArgs.push_back("-dwarf-explicit-import");4671 4672 renderDwarfFormat(D, T, Args, CmdArgs, EffectiveDWARFVersion);4673 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, TC);4674 4675 // This controls whether or not we perform JustMyCode instrumentation.4676 if (Args.hasFlag(options::OPT_fjmc, options::OPT_fno_jmc, false)) {4677 if (TC.getTriple().isOSBinFormatELF() ||4678 TC.getTriple().isWindowsMSVCEnvironment()) {4679 if (DebugInfoKind >= llvm::codegenoptions::DebugInfoConstructor)4680 CmdArgs.push_back("-fjmc");4681 else if (D.IsCLMode())4682 D.Diag(clang::diag::warn_drv_jmc_requires_debuginfo) << "/JMC"4683 << "'/Zi', '/Z7'";4684 else4685 D.Diag(clang::diag::warn_drv_jmc_requires_debuginfo) << "-fjmc"4686 << "-g";4687 } else {4688 D.Diag(clang::diag::warn_drv_fjmc_for_elf_only);4689 }4690 }4691 4692 // Add in -fdebug-compilation-dir if necessary.4693 const char *DebugCompilationDir =4694 addDebugCompDirArg(Args, CmdArgs, D.getVFS());4695 4696 addDebugPrefixMapArg(D, TC, Args, CmdArgs);4697 4698 // Add the output path to the object file for CodeView debug infos.4699 if (EmitCodeView && Output.isFilename())4700 addDebugObjectName(Args, CmdArgs, DebugCompilationDir,4701 Output.getFilename());4702}4703 4704static void ProcessVSRuntimeLibrary(const ToolChain &TC, const ArgList &Args,4705 ArgStringList &CmdArgs) {4706 unsigned RTOptionID = options::OPT__SLASH_MT;4707 4708 if (Args.hasArg(options::OPT__SLASH_LDd))4709 // The /LDd option implies /MTd. The dependent lib part can be overridden,4710 // but defining _DEBUG is sticky.4711 RTOptionID = options::OPT__SLASH_MTd;4712 4713 if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))4714 RTOptionID = A->getOption().getID();4715 4716 if (Arg *A = Args.getLastArg(options::OPT_fms_runtime_lib_EQ)) {4717 RTOptionID = llvm::StringSwitch<unsigned>(A->getValue())4718 .Case("static", options::OPT__SLASH_MT)4719 .Case("static_dbg", options::OPT__SLASH_MTd)4720 .Case("dll", options::OPT__SLASH_MD)4721 .Case("dll_dbg", options::OPT__SLASH_MDd)4722 .Default(options::OPT__SLASH_MT);4723 }4724 4725 StringRef FlagForCRT;4726 switch (RTOptionID) {4727 case options::OPT__SLASH_MD:4728 if (Args.hasArg(options::OPT__SLASH_LDd))4729 CmdArgs.push_back("-D_DEBUG");4730 CmdArgs.push_back("-D_MT");4731 CmdArgs.push_back("-D_DLL");4732 FlagForCRT = "--dependent-lib=msvcrt";4733 break;4734 case options::OPT__SLASH_MDd:4735 CmdArgs.push_back("-D_DEBUG");4736 CmdArgs.push_back("-D_MT");4737 CmdArgs.push_back("-D_DLL");4738 FlagForCRT = "--dependent-lib=msvcrtd";4739 break;4740 case options::OPT__SLASH_MT:4741 if (Args.hasArg(options::OPT__SLASH_LDd))4742 CmdArgs.push_back("-D_DEBUG");4743 CmdArgs.push_back("-D_MT");4744 CmdArgs.push_back("-flto-visibility-public-std");4745 FlagForCRT = "--dependent-lib=libcmt";4746 break;4747 case options::OPT__SLASH_MTd:4748 CmdArgs.push_back("-D_DEBUG");4749 CmdArgs.push_back("-D_MT");4750 CmdArgs.push_back("-flto-visibility-public-std");4751 FlagForCRT = "--dependent-lib=libcmtd";4752 break;4753 default:4754 llvm_unreachable("Unexpected option ID.");4755 }4756 4757 if (Args.hasArg(options::OPT_fms_omit_default_lib)) {4758 CmdArgs.push_back("-D_VC_NODEFAULTLIB");4759 } else {4760 CmdArgs.push_back(FlagForCRT.data());4761 4762 // This provides POSIX compatibility (maps 'open' to '_open'), which most4763 // users want. The /Za flag to cl.exe turns this off, but it's not4764 // implemented in clang.4765 CmdArgs.push_back("--dependent-lib=oldnames");4766 }4767 4768 // All Arm64EC object files implicitly add softintrin.lib. This is necessary4769 // even if the file doesn't actually refer to any of the routines because4770 // the CRT itself has incomplete dependency markings.4771 if (TC.getTriple().isWindowsArm64EC())4772 CmdArgs.push_back("--dependent-lib=softintrin");4773}4774 4775void Clang::ConstructJob(Compilation &C, const JobAction &JA,4776 const InputInfo &Output, const InputInfoList &Inputs,4777 const ArgList &Args, const char *LinkingOutput) const {4778 const auto &TC = getToolChain();4779 const llvm::Triple &RawTriple = TC.getTriple();4780 const llvm::Triple &Triple = TC.getEffectiveTriple();4781 const std::string &TripleStr = Triple.getTriple();4782 4783 bool KernelOrKext =4784 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);4785 const Driver &D = TC.getDriver();4786 ArgStringList CmdArgs;4787 4788 assert(Inputs.size() >= 1 && "Must have at least one input.");4789 // CUDA/HIP compilation may have multiple inputs (source file + results of4790 // device-side compilations). OpenMP device jobs also take the host IR as a4791 // second input. Module precompilation accepts a list of header files to4792 // include as part of the module. API extraction accepts a list of header4793 // files whose API information is emitted in the output. All other jobs are4794 // expected to have exactly one input. SYCL compilation only expects a4795 // single input.4796 bool IsCuda = JA.isOffloading(Action::OFK_Cuda);4797 bool IsCudaDevice = JA.isDeviceOffloading(Action::OFK_Cuda);4798 bool IsHIP = JA.isOffloading(Action::OFK_HIP);4799 bool IsHIPDevice = JA.isDeviceOffloading(Action::OFK_HIP);4800 bool IsSYCL = JA.isOffloading(Action::OFK_SYCL);4801 bool IsSYCLDevice = JA.isDeviceOffloading(Action::OFK_SYCL);4802 bool IsOpenMPDevice = JA.isDeviceOffloading(Action::OFK_OpenMP);4803 bool IsExtractAPI = isa<ExtractAPIJobAction>(JA);4804 bool IsDeviceOffloadAction = !(JA.isDeviceOffloading(Action::OFK_None) ||4805 JA.isDeviceOffloading(Action::OFK_Host));4806 bool IsHostOffloadingAction =4807 JA.isHostOffloading(Action::OFK_OpenMP) ||4808 JA.isHostOffloading(Action::OFK_SYCL) ||4809 (JA.isHostOffloading(C.getActiveOffloadKinds()) &&4810 Args.hasFlag(options::OPT_offload_new_driver,4811 options::OPT_no_offload_new_driver,4812 C.isOffloadingHostKind(Action::OFK_Cuda)));4813 4814 bool IsRDCMode =4815 Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false);4816 4817 auto LTOMode = IsDeviceOffloadAction ? D.getOffloadLTOMode() : D.getLTOMode();4818 bool IsUsingLTO = LTOMode != LTOK_None;4819 4820 // Extract API doesn't have a main input file, so invent a fake one as a4821 // placeholder.4822 InputInfo ExtractAPIPlaceholderInput(Inputs[0].getType(), "extract-api",4823 "extract-api");4824 4825 const InputInfo &Input =4826 IsExtractAPI ? ExtractAPIPlaceholderInput : Inputs[0];4827 4828 InputInfoList ExtractAPIInputs;4829 InputInfoList HostOffloadingInputs;4830 const InputInfo *CudaDeviceInput = nullptr;4831 const InputInfo *OpenMPDeviceInput = nullptr;4832 for (const InputInfo &I : Inputs) {4833 if (&I == &Input || I.getType() == types::TY_Nothing) {4834 // This is the primary input or contains nothing.4835 } else if (IsExtractAPI) {4836 auto ExpectedInputType = ExtractAPIPlaceholderInput.getType();4837 if (I.getType() != ExpectedInputType) {4838 D.Diag(diag::err_drv_extract_api_wrong_kind)4839 << I.getFilename() << types::getTypeName(I.getType())4840 << types::getTypeName(ExpectedInputType);4841 }4842 ExtractAPIInputs.push_back(I);4843 } else if (IsHostOffloadingAction) {4844 HostOffloadingInputs.push_back(I);4845 } else if ((IsCuda || IsHIP) && !CudaDeviceInput) {4846 CudaDeviceInput = &I;4847 } else if (IsOpenMPDevice && !OpenMPDeviceInput) {4848 OpenMPDeviceInput = &I;4849 } else {4850 llvm_unreachable("unexpectedly given multiple inputs");4851 }4852 }4853 4854 const llvm::Triple *AuxTriple =4855 (IsCuda || IsHIP) ? TC.getAuxTriple() : nullptr;4856 bool IsWindowsMSVC = RawTriple.isWindowsMSVCEnvironment();4857 bool IsUEFI = RawTriple.isUEFI();4858 bool IsIAMCU = RawTriple.isOSIAMCU();4859 4860 // Adjust IsWindowsXYZ for CUDA/HIP/SYCL compilations. Even when compiling in4861 // device mode (i.e., getToolchain().getTriple() is NVPTX/AMDGCN, not4862 // Windows), we need to pass Windows-specific flags to cc1.4863 if (IsCuda || IsHIP || IsSYCL)4864 IsWindowsMSVC |= AuxTriple && AuxTriple->isWindowsMSVCEnvironment();4865 4866 // C++ is not supported for IAMCU.4867 if (IsIAMCU && types::isCXX(Input.getType()))4868 D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";4869 4870 // Invoke ourselves in -cc1 mode.4871 //4872 // FIXME: Implement custom jobs for internal actions.4873 CmdArgs.push_back("-cc1");4874 4875 // Add the "effective" target triple.4876 CmdArgs.push_back("-triple");4877 CmdArgs.push_back(Args.MakeArgString(TripleStr));4878 4879 if (const Arg *MJ = Args.getLastArg(options::OPT_MJ)) {4880 DumpCompilationDatabase(C, MJ->getValue(), TripleStr, Output, Input, Args);4881 Args.ClaimAllArgs(options::OPT_MJ);4882 } else if (const Arg *GenCDBFragment =4883 Args.getLastArg(options::OPT_gen_cdb_fragment_path)) {4884 DumpCompilationDatabaseFragmentToDir(GenCDBFragment->getValue(), C,4885 TripleStr, Output, Input, Args);4886 Args.ClaimAllArgs(options::OPT_gen_cdb_fragment_path);4887 }4888 4889 if (IsCuda || IsHIP) {4890 // We have to pass the triple of the host if compiling for a CUDA/HIP device4891 // and vice-versa.4892 std::string NormalizedTriple;4893 if (JA.isDeviceOffloading(Action::OFK_Cuda) ||4894 JA.isDeviceOffloading(Action::OFK_HIP))4895 NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()4896 ->getTriple()4897 .normalize();4898 else {4899 // Host-side compilation.4900 NormalizedTriple =4901 (IsCuda ? C.getOffloadToolChains(Action::OFK_Cuda).first->second4902 : C.getOffloadToolChains(Action::OFK_HIP).first->second)4903 ->getTriple()4904 .normalize();4905 if (IsCuda) {4906 // We need to figure out which CUDA version we're compiling for, as that4907 // determines how we load and launch GPU kernels.4908 auto *CTC = static_cast<const toolchains::CudaToolChain *>(4909 C.getSingleOffloadToolChain<Action::OFK_Cuda>());4910 assert(CTC && "Expected valid CUDA Toolchain.");4911 if (CTC && CTC->CudaInstallation.version() != CudaVersion::UNKNOWN)4912 CmdArgs.push_back(Args.MakeArgString(4913 Twine("-target-sdk-version=") +4914 CudaVersionToString(CTC->CudaInstallation.version())));4915 // Unsized function arguments used for variadics were introduced in4916 // CUDA-9.0. We still do not support generating code that actually uses4917 // variadic arguments yet, but we do need to allow parsing them as4918 // recent CUDA headers rely on that.4919 // https://github.com/llvm/llvm-project/issues/584104920 if (CTC->CudaInstallation.version() >= CudaVersion::CUDA_90)4921 CmdArgs.push_back("-fcuda-allow-variadic-functions");4922 }4923 }4924 CmdArgs.push_back("-aux-triple");4925 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));4926 4927 if (JA.isDeviceOffloading(Action::OFK_HIP) &&4928 (getToolChain().getTriple().isAMDGPU() ||4929 (getToolChain().getTriple().isSPIRV() &&4930 getToolChain().getTriple().getVendor() == llvm::Triple::AMD))) {4931 // Device side compilation printf4932 if (Args.getLastArg(options::OPT_mprintf_kind_EQ)) {4933 CmdArgs.push_back(Args.MakeArgString(4934 "-mprintf-kind=" +4935 Args.getLastArgValue(options::OPT_mprintf_kind_EQ)));4936 // Force compiler error on invalid conversion specifiers4937 CmdArgs.push_back(4938 Args.MakeArgString("-Werror=format-invalid-specifier"));4939 }4940 }4941 }4942 4943 // Optimization level for CodeGen.4944 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) {4945 if (A->getOption().matches(options::OPT_O4)) {4946 CmdArgs.push_back("-O3");4947 D.Diag(diag::warn_O4_is_O3);4948 } else {4949 A->render(Args, CmdArgs);4950 }4951 }4952 4953 // Unconditionally claim the printf option now to avoid unused diagnostic.4954 if (const Arg *PF = Args.getLastArg(options::OPT_mprintf_kind_EQ))4955 PF->claim();4956 4957 if (IsSYCL) {4958 if (IsSYCLDevice) {4959 // Host triple is needed when doing SYCL device compilations.4960 llvm::Triple AuxT = C.getDefaultToolChain().getTriple();4961 std::string NormalizedTriple = AuxT.normalize();4962 CmdArgs.push_back("-aux-triple");4963 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));4964 4965 // We want to compile sycl kernels.4966 CmdArgs.push_back("-fsycl-is-device");4967 4968 // Set O2 optimization level by default4969 if (!Args.getLastArg(options::OPT_O_Group))4970 CmdArgs.push_back("-O2");4971 } else {4972 // Add any options that are needed specific to SYCL offload while4973 // performing the host side compilation.4974 4975 // Let the front-end host compilation flow know about SYCL offload4976 // compilation.4977 CmdArgs.push_back("-fsycl-is-host");4978 }4979 4980 // Set options for both host and device.4981 Arg *SYCLStdArg = Args.getLastArg(options::OPT_sycl_std_EQ);4982 if (SYCLStdArg) {4983 SYCLStdArg->render(Args, CmdArgs);4984 } else {4985 // Ensure the default version in SYCL mode is 2020.4986 CmdArgs.push_back("-sycl-std=2020");4987 }4988 }4989 4990 if (Args.hasArg(options::OPT_fclangir))4991 CmdArgs.push_back("-fclangir");4992 4993 if (IsOpenMPDevice) {4994 // We have to pass the triple of the host if compiling for an OpenMP device.4995 std::string NormalizedTriple =4996 C.getSingleOffloadToolChain<Action::OFK_Host>()4997 ->getTriple()4998 .normalize();4999 CmdArgs.push_back("-aux-triple");5000 CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));5001 }5002 5003 if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||5004 Triple.getArch() == llvm::Triple::thumb)) {5005 unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;5006 unsigned Version = 0;5007 bool Failure =5008 Triple.getArchName().substr(Offset).consumeInteger(10, Version);5009 if (Failure || Version < 7)5010 D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()5011 << TripleStr;5012 }5013 5014 // Push all default warning arguments that are specific to5015 // the given target. These come before user provided warning options5016 // are provided.5017 TC.addClangWarningOptions(CmdArgs);5018 5019 // FIXME: Subclass ToolChain for SPIR and move this to addClangWarningOptions.5020 if (Triple.isSPIR() || Triple.isSPIRV())5021 CmdArgs.push_back("-Wspir-compat");5022 5023 // Select the appropriate action.5024 RewriteKind rewriteKind = RK_None;5025 5026 bool UnifiedLTO = false;5027 if (IsUsingLTO) {5028 UnifiedLTO = Args.hasFlag(options::OPT_funified_lto,5029 options::OPT_fno_unified_lto, Triple.isPS());5030 if (UnifiedLTO)5031 CmdArgs.push_back("-funified-lto");5032 }5033 5034 // If CollectArgsForIntegratedAssembler() isn't called below, claim the args5035 // it claims when not running an assembler. Otherwise, clang would emit5036 // "argument unused" warnings for assembler flags when e.g. adding "-E" to5037 // flags while debugging something. That'd be somewhat inconvenient, and it's5038 // also inconsistent with most other flags -- we don't warn on5039 // -ffunction-sections not being used in -E mode either for example, even5040 // though it's not really used either.5041 if (!isa<AssembleJobAction>(JA)) {5042 // The args claimed here should match the args used in5043 // CollectArgsForIntegratedAssembler().5044 if (TC.useIntegratedAs()) {5045 Args.ClaimAllArgs(options::OPT_mrelax_all);5046 Args.ClaimAllArgs(options::OPT_mno_relax_all);5047 Args.ClaimAllArgs(options::OPT_mincremental_linker_compatible);5048 Args.ClaimAllArgs(options::OPT_mno_incremental_linker_compatible);5049 switch (C.getDefaultToolChain().getArch()) {5050 case llvm::Triple::arm:5051 case llvm::Triple::armeb:5052 case llvm::Triple::thumb:5053 case llvm::Triple::thumbeb:5054 Args.ClaimAllArgs(options::OPT_mimplicit_it_EQ);5055 break;5056 default:5057 break;5058 }5059 }5060 Args.ClaimAllArgs(options::OPT_Wa_COMMA);5061 Args.ClaimAllArgs(options::OPT_Xassembler);5062 Args.ClaimAllArgs(options::OPT_femit_dwarf_unwind_EQ);5063 }5064 5065 bool IsAMDSPIRVForHIPDevice =5066 IsHIPDevice && getToolChain().getTriple().isSPIRV() &&5067 getToolChain().getTriple().getVendor() == llvm::Triple::AMD;5068 5069 if (isa<AnalyzeJobAction>(JA)) {5070 assert(JA.getType() == types::TY_Plist && "Invalid output type.");5071 CmdArgs.push_back("-analyze");5072 } else if (isa<PreprocessJobAction>(JA)) {5073 if (Output.getType() == types::TY_Dependencies)5074 CmdArgs.push_back("-Eonly");5075 else {5076 CmdArgs.push_back("-E");5077 if (Args.hasArg(options::OPT_rewrite_objc) &&5078 !Args.hasArg(options::OPT_g_Group))5079 CmdArgs.push_back("-P");5080 else if (JA.getType() == types::TY_PP_CXXHeaderUnit)5081 CmdArgs.push_back("-fdirectives-only");5082 }5083 } else if (isa<AssembleJobAction>(JA)) {5084 CmdArgs.push_back("-emit-obj");5085 5086 CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);5087 5088 // Also ignore explicit -force_cpusubtype_ALL option.5089 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);5090 } else if (isa<PrecompileJobAction>(JA)) {5091 if (JA.getType() == types::TY_Nothing)5092 CmdArgs.push_back("-fsyntax-only");5093 else if (JA.getType() == types::TY_ModuleFile)5094 CmdArgs.push_back("-emit-module-interface");5095 else if (JA.getType() == types::TY_HeaderUnit)5096 CmdArgs.push_back("-emit-header-unit");5097 else if (!Args.hasArg(options::OPT_ignore_pch))5098 CmdArgs.push_back("-emit-pch");5099 } else if (isa<VerifyPCHJobAction>(JA)) {5100 CmdArgs.push_back("-verify-pch");5101 } else if (isa<ExtractAPIJobAction>(JA)) {5102 assert(JA.getType() == types::TY_API_INFO &&5103 "Extract API actions must generate a API information.");5104 CmdArgs.push_back("-extract-api");5105 5106 if (Arg *PrettySGFArg = Args.getLastArg(options::OPT_emit_pretty_sgf))5107 PrettySGFArg->render(Args, CmdArgs);5108 5109 Arg *SymbolGraphDirArg = Args.getLastArg(options::OPT_symbol_graph_dir_EQ);5110 5111 if (Arg *ProductNameArg = Args.getLastArg(options::OPT_product_name_EQ))5112 ProductNameArg->render(Args, CmdArgs);5113 if (Arg *ExtractAPIIgnoresFileArg =5114 Args.getLastArg(options::OPT_extract_api_ignores_EQ))5115 ExtractAPIIgnoresFileArg->render(Args, CmdArgs);5116 if (Arg *EmitExtensionSymbolGraphs =5117 Args.getLastArg(options::OPT_emit_extension_symbol_graphs)) {5118 if (!SymbolGraphDirArg)5119 D.Diag(diag::err_drv_missing_symbol_graph_dir);5120 5121 EmitExtensionSymbolGraphs->render(Args, CmdArgs);5122 }5123 if (SymbolGraphDirArg)5124 SymbolGraphDirArg->render(Args, CmdArgs);5125 } else {5126 assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&5127 "Invalid action for clang tool.");5128 if (JA.getType() == types::TY_Nothing) {5129 CmdArgs.push_back("-fsyntax-only");5130 } else if (JA.getType() == types::TY_LLVM_IR ||5131 JA.getType() == types::TY_LTO_IR) {5132 CmdArgs.push_back("-emit-llvm");5133 } else if (JA.getType() == types::TY_LLVM_BC ||5134 JA.getType() == types::TY_LTO_BC) {5135 // Emit textual llvm IR for AMDGPU offloading for -emit-llvm -S5136 if (Triple.isAMDGCN() && IsOpenMPDevice && Args.hasArg(options::OPT_S) &&5137 Args.hasArg(options::OPT_emit_llvm)) {5138 CmdArgs.push_back("-emit-llvm");5139 } else {5140 CmdArgs.push_back("-emit-llvm-bc");5141 }5142 } else if (JA.getType() == types::TY_IFS ||5143 JA.getType() == types::TY_IFS_CPP) {5144 StringRef ArgStr =5145 Args.hasArg(options::OPT_interface_stub_version_EQ)5146 ? Args.getLastArgValue(options::OPT_interface_stub_version_EQ)5147 : "ifs-v1";5148 CmdArgs.push_back("-emit-interface-stubs");5149 CmdArgs.push_back(5150 Args.MakeArgString(Twine("-interface-stub-version=") + ArgStr.str()));5151 } else if (JA.getType() == types::TY_PP_Asm) {5152 CmdArgs.push_back("-S");5153 } else if (JA.getType() == types::TY_AST) {5154 if (!Args.hasArg(options::OPT_ignore_pch))5155 CmdArgs.push_back("-emit-pch");5156 } else if (JA.getType() == types::TY_ModuleFile) {5157 CmdArgs.push_back("-module-file-info");5158 } else if (JA.getType() == types::TY_RewrittenObjC) {5159 CmdArgs.push_back("-rewrite-objc");5160 rewriteKind = RK_NonFragile;5161 } else if (JA.getType() == types::TY_RewrittenLegacyObjC) {5162 CmdArgs.push_back("-rewrite-objc");5163 rewriteKind = RK_Fragile;5164 } else if (JA.getType() == types::TY_CIR) {5165 CmdArgs.push_back("-emit-cir");5166 } else if (JA.getType() == types::TY_Image && IsAMDSPIRVForHIPDevice) {5167 CmdArgs.push_back("-emit-obj");5168 } else {5169 assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");5170 }5171 5172 // Preserve use-list order by default when emitting bitcode, so that5173 // loading the bitcode up in 'opt' or 'llc' and running passes gives the5174 // same result as running passes here. For LTO, we don't need to preserve5175 // the use-list order, since serialization to bitcode is part of the flow.5176 if (JA.getType() == types::TY_LLVM_BC)5177 CmdArgs.push_back("-emit-llvm-uselists");5178 5179 if (IsUsingLTO) {5180 if (IsDeviceOffloadAction && !JA.isDeviceOffloading(Action::OFK_OpenMP) &&5181 !Args.hasFlag(options::OPT_offload_new_driver,5182 options::OPT_no_offload_new_driver,5183 C.isOffloadingHostKind(Action::OFK_Cuda)) &&5184 !Triple.isAMDGPU()) {5185 D.Diag(diag::err_drv_unsupported_opt_for_target)5186 << Args.getLastArg(options::OPT_foffload_lto,5187 options::OPT_foffload_lto_EQ)5188 ->getAsString(Args)5189 << Triple.getTriple();5190 } else if (Triple.isNVPTX() && !IsRDCMode &&5191 JA.isDeviceOffloading(Action::OFK_Cuda)) {5192 D.Diag(diag::err_drv_unsupported_opt_for_language_mode)5193 << Args.getLastArg(options::OPT_foffload_lto,5194 options::OPT_foffload_lto_EQ)5195 ->getAsString(Args)5196 << "-fno-gpu-rdc";5197 } else {5198 assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);5199 CmdArgs.push_back(Args.MakeArgString(5200 Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));5201 // PS4 uses the legacy LTO API, which does not support some of the5202 // features enabled by -flto-unit.5203 if (!RawTriple.isPS4() ||5204 (D.getLTOMode() == LTOK_Full) || !UnifiedLTO)5205 CmdArgs.push_back("-flto-unit");5206 }5207 }5208 }5209 5210 Args.AddLastArg(CmdArgs, options::OPT_dumpdir);5211 5212 if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {5213 if (!types::isLLVMIR(Input.getType()))5214 D.Diag(diag::err_drv_arg_requires_bitcode_input) << A->getAsString(Args);5215 Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);5216 }5217 5218 if (Triple.isPPC())5219 Args.addOptInFlag(CmdArgs, options::OPT_mregnames,5220 options::OPT_mno_regnames);5221 5222 if (Args.getLastArg(options::OPT_fthin_link_bitcode_EQ))5223 Args.AddLastArg(CmdArgs, options::OPT_fthin_link_bitcode_EQ);5224 5225 if (Args.getLastArg(options::OPT_save_temps_EQ))5226 Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);5227 5228 auto *MemProfArg = Args.getLastArg(options::OPT_fmemory_profile,5229 options::OPT_fmemory_profile_EQ,5230 options::OPT_fno_memory_profile);5231 if (MemProfArg &&5232 !MemProfArg->getOption().matches(options::OPT_fno_memory_profile))5233 MemProfArg->render(Args, CmdArgs);5234 5235 if (auto *MemProfUseArg =5236 Args.getLastArg(options::OPT_fmemory_profile_use_EQ)) {5237 if (MemProfArg)5238 D.Diag(diag::err_drv_argument_not_allowed_with)5239 << MemProfUseArg->getAsString(Args) << MemProfArg->getAsString(Args);5240 if (auto *PGOInstrArg = Args.getLastArg(options::OPT_fprofile_generate,5241 options::OPT_fprofile_generate_EQ))5242 D.Diag(diag::err_drv_argument_not_allowed_with)5243 << MemProfUseArg->getAsString(Args) << PGOInstrArg->getAsString(Args);5244 MemProfUseArg->render(Args, CmdArgs);5245 }5246 5247 // Embed-bitcode option.5248 // Only white-listed flags below are allowed to be embedded.5249 if (C.getDriver().embedBitcodeInObject() && !IsUsingLTO &&5250 (isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {5251 // Add flags implied by -fembed-bitcode.5252 Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);5253 // Disable all llvm IR level optimizations.5254 CmdArgs.push_back("-disable-llvm-passes");5255 5256 // Render target options.5257 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());5258 5259 // reject options that shouldn't be supported in bitcode5260 // also reject kernel/kext5261 static const constexpr unsigned kBitcodeOptionIgnorelist[] = {5262 options::OPT_mkernel,5263 options::OPT_fapple_kext,5264 options::OPT_ffunction_sections,5265 options::OPT_fno_function_sections,5266 options::OPT_fdata_sections,5267 options::OPT_fno_data_sections,5268 options::OPT_fbasic_block_sections_EQ,5269 options::OPT_funique_internal_linkage_names,5270 options::OPT_fno_unique_internal_linkage_names,5271 options::OPT_funique_section_names,5272 options::OPT_fno_unique_section_names,5273 options::OPT_funique_basic_block_section_names,5274 options::OPT_fno_unique_basic_block_section_names,5275 options::OPT_mrestrict_it,5276 options::OPT_mno_restrict_it,5277 options::OPT_mstackrealign,5278 options::OPT_mno_stackrealign,5279 options::OPT_mstack_alignment,5280 options::OPT_mcmodel_EQ,5281 options::OPT_mlong_calls,5282 options::OPT_mno_long_calls,5283 options::OPT_ggnu_pubnames,5284 options::OPT_gdwarf_aranges,5285 options::OPT_fdebug_types_section,5286 options::OPT_fno_debug_types_section,5287 options::OPT_fdwarf_directory_asm,5288 options::OPT_fno_dwarf_directory_asm,5289 options::OPT_mrelax_all,5290 options::OPT_mno_relax_all,5291 options::OPT_ftrap_function_EQ,5292 options::OPT_ffixed_r9,5293 options::OPT_mfix_cortex_a53_835769,5294 options::OPT_mno_fix_cortex_a53_835769,5295 options::OPT_ffixed_x18,5296 options::OPT_mglobal_merge,5297 options::OPT_mno_global_merge,5298 options::OPT_mred_zone,5299 options::OPT_mno_red_zone,5300 options::OPT_Wa_COMMA,5301 options::OPT_Xassembler,5302 options::OPT_mllvm,5303 options::OPT_mmlir,5304 };5305 for (const auto &A : Args)5306 if (llvm::is_contained(kBitcodeOptionIgnorelist, A->getOption().getID()))5307 D.Diag(diag::err_drv_unsupported_embed_bitcode) << A->getSpelling();5308 5309 // Render the CodeGen options that need to be passed.5310 Args.addOptOutFlag(CmdArgs, options::OPT_foptimize_sibling_calls,5311 options::OPT_fno_optimize_sibling_calls);5312 5313 RenderFloatingPointOptions(TC, D, isOptimizationLevelFast(Args), Args,5314 CmdArgs, JA);5315 5316 // Render ABI arguments5317 switch (TC.getArch()) {5318 default: break;5319 case llvm::Triple::arm:5320 case llvm::Triple::armeb:5321 case llvm::Triple::thumbeb:5322 RenderARMABI(D, Triple, Args, CmdArgs);5323 break;5324 case llvm::Triple::aarch64:5325 case llvm::Triple::aarch64_32:5326 case llvm::Triple::aarch64_be:5327 RenderAArch64ABI(Triple, Args, CmdArgs);5328 break;5329 }5330 5331 // Input/Output file.5332 if (Output.getType() == types::TY_Dependencies) {5333 // Handled with other dependency code.5334 } else if (Output.isFilename()) {5335 CmdArgs.push_back("-o");5336 CmdArgs.push_back(Output.getFilename());5337 } else {5338 assert(Output.isNothing() && "Input output.");5339 }5340 5341 for (const auto &II : Inputs) {5342 addDashXForInput(Args, II, CmdArgs);5343 if (II.isFilename())5344 CmdArgs.push_back(II.getFilename());5345 else5346 II.getInputArg().renderAsInput(Args, CmdArgs);5347 }5348 5349 C.addCommand(std::make_unique<Command>(5350 JA, *this, ResponseFileSupport::AtFileUTF8(), D.getClangProgramPath(),5351 CmdArgs, Inputs, Output, D.getPrependArg()));5352 return;5353 }5354 5355 if (C.getDriver().embedBitcodeMarkerOnly() && !IsUsingLTO)5356 CmdArgs.push_back("-fembed-bitcode=marker");5357 5358 // We normally speed up the clang process a bit by skipping destructors at5359 // exit, but when we're generating diagnostics we can rely on some of the5360 // cleanup.5361 if (!C.isForDiagnostics())5362 CmdArgs.push_back("-disable-free");5363 CmdArgs.push_back("-clear-ast-before-backend");5364 5365#ifdef NDEBUG5366 const bool IsAssertBuild = false;5367#else5368 const bool IsAssertBuild = true;5369#endif5370 5371 // Disable the verification pass in no-asserts builds unless otherwise5372 // specified.5373 if (Args.hasFlag(options::OPT_fno_verify_intermediate_code,5374 options::OPT_fverify_intermediate_code, !IsAssertBuild)) {5375 CmdArgs.push_back("-disable-llvm-verifier");5376 }5377 5378 // Discard value names in no-asserts builds unless otherwise specified.5379 if (Args.hasFlag(options::OPT_fdiscard_value_names,5380 options::OPT_fno_discard_value_names, !IsAssertBuild)) {5381 if (Args.hasArg(options::OPT_fdiscard_value_names) &&5382 llvm::any_of(Inputs, [](const clang::driver::InputInfo &II) {5383 return types::isLLVMIR(II.getType());5384 })) {5385 D.Diag(diag::warn_ignoring_fdiscard_for_bitcode);5386 }5387 CmdArgs.push_back("-discard-value-names");5388 }5389 5390 // Set the main file name, so that debug info works even with5391 // -save-temps.5392 CmdArgs.push_back("-main-file-name");5393 CmdArgs.push_back(getBaseInputName(Args, Input));5394 5395 // Some flags which affect the language (via preprocessor5396 // defines).5397 if (Args.hasArg(options::OPT_static))5398 CmdArgs.push_back("-static-define");5399 5400 Args.AddLastArg(CmdArgs, options::OPT_static_libclosure);5401 5402 if (Args.hasArg(options::OPT_municode))5403 CmdArgs.push_back("-DUNICODE");5404 5405 if (isa<AnalyzeJobAction>(JA))5406 RenderAnalyzerOptions(Args, CmdArgs, Triple, Input);5407 5408 if (isa<AnalyzeJobAction>(JA) ||5409 (isa<PreprocessJobAction>(JA) && Args.hasArg(options::OPT__analyze)))5410 CmdArgs.push_back("-setup-static-analyzer");5411 5412 // Enable compatilibily mode to avoid analyzer-config related errors.5413 // Since we can't access frontend flags through hasArg, let's manually iterate5414 // through them.5415 bool FoundAnalyzerConfig = false;5416 for (auto *Arg : Args.filtered(options::OPT_Xclang))5417 if (StringRef(Arg->getValue()) == "-analyzer-config") {5418 FoundAnalyzerConfig = true;5419 break;5420 }5421 if (!FoundAnalyzerConfig)5422 for (auto *Arg : Args.filtered(options::OPT_Xanalyzer))5423 if (StringRef(Arg->getValue()) == "-analyzer-config") {5424 FoundAnalyzerConfig = true;5425 break;5426 }5427 if (FoundAnalyzerConfig)5428 CmdArgs.push_back("-analyzer-config-compatibility-mode=true");5429 5430 CheckCodeGenerationOptions(D, Args);5431 5432 unsigned FunctionAlignment = ParseFunctionAlignment(TC, Args);5433 assert(FunctionAlignment <= 31 && "function alignment will be truncated!");5434 if (FunctionAlignment) {5435 CmdArgs.push_back("-function-alignment");5436 CmdArgs.push_back(Args.MakeArgString(std::to_string(FunctionAlignment)));5437 }5438 5439 // We support -falign-loops=N where N is a power of 2. GCC supports more5440 // forms.5441 if (const Arg *A = Args.getLastArg(options::OPT_falign_loops_EQ)) {5442 unsigned Value = 0;5443 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)5444 TC.getDriver().Diag(diag::err_drv_invalid_int_value)5445 << A->getAsString(Args) << A->getValue();5446 else if (Value & (Value - 1))5447 TC.getDriver().Diag(diag::err_drv_alignment_not_power_of_two)5448 << A->getAsString(Args) << A->getValue();5449 // Treat =0 as unspecified (use the target preference).5450 if (Value)5451 CmdArgs.push_back(Args.MakeArgString("-falign-loops=" +5452 Twine(std::min(Value, 65536u))));5453 }5454 5455 if (Triple.isOSzOS()) {5456 // On z/OS some of the system header feature macros need to5457 // be defined to enable most cross platform projects to build5458 // successfully. Ths include the libc++ library. A5459 // complicating factor is that users can define these5460 // macros to the same or different values. We need to add5461 // the definition for these macros to the compilation command5462 // if the user hasn't already defined them.5463 5464 auto findMacroDefinition = [&](const std::string &Macro) {5465 auto MacroDefs = Args.getAllArgValues(options::OPT_D);5466 return llvm::any_of(MacroDefs, [&](const std::string &M) {5467 return M == Macro || M.find(Macro + '=') != std::string::npos;5468 });5469 };5470 5471 // _UNIX03_WITHDRAWN is required for libcxx & porting.5472 if (!findMacroDefinition("_UNIX03_WITHDRAWN"))5473 CmdArgs.push_back("-D_UNIX03_WITHDRAWN");5474 // _OPEN_DEFAULT is required for XL compat5475 if (!findMacroDefinition("_OPEN_DEFAULT"))5476 CmdArgs.push_back("-D_OPEN_DEFAULT");5477 if (D.CCCIsCXX() || types::isCXX(Input.getType())) {5478 // _XOPEN_SOURCE=600 is required for libcxx.5479 if (!findMacroDefinition("_XOPEN_SOURCE"))5480 CmdArgs.push_back("-D_XOPEN_SOURCE=600");5481 }5482 }5483 5484 llvm::Reloc::Model RelocationModel;5485 unsigned PICLevel;5486 bool IsPIE;5487 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(TC, Args);5488 Arg *LastPICDataRelArg =5489 Args.getLastArg(options::OPT_mno_pic_data_is_text_relative,5490 options::OPT_mpic_data_is_text_relative);5491 bool NoPICDataIsTextRelative = false;5492 if (LastPICDataRelArg) {5493 if (LastPICDataRelArg->getOption().matches(5494 options::OPT_mno_pic_data_is_text_relative)) {5495 NoPICDataIsTextRelative = true;5496 if (!PICLevel)5497 D.Diag(diag::err_drv_argument_only_allowed_with)5498 << "-mno-pic-data-is-text-relative"5499 << "-fpic/-fpie";5500 }5501 if (!Triple.isSystemZ())5502 D.Diag(diag::err_drv_unsupported_opt_for_target)5503 << (NoPICDataIsTextRelative ? "-mno-pic-data-is-text-relative"5504 : "-mpic-data-is-text-relative")5505 << RawTriple.str();5506 }5507 5508 bool IsROPI = RelocationModel == llvm::Reloc::ROPI ||5509 RelocationModel == llvm::Reloc::ROPI_RWPI;5510 bool IsRWPI = RelocationModel == llvm::Reloc::RWPI ||5511 RelocationModel == llvm::Reloc::ROPI_RWPI;5512 5513 if (Args.hasArg(options::OPT_mcmse) &&5514 !Args.hasArg(options::OPT_fallow_unsupported)) {5515 if (IsROPI)5516 D.Diag(diag::err_cmse_pi_are_incompatible) << IsROPI;5517 if (IsRWPI)5518 D.Diag(diag::err_cmse_pi_are_incompatible) << !IsRWPI;5519 }5520 5521 if (IsROPI && types::isCXX(Input.getType()) &&5522 !Args.hasArg(options::OPT_fallow_unsupported))5523 D.Diag(diag::err_drv_ropi_incompatible_with_cxx);5524 5525 const char *RMName = RelocationModelName(RelocationModel);5526 if (RMName) {5527 CmdArgs.push_back("-mrelocation-model");5528 CmdArgs.push_back(RMName);5529 }5530 if (PICLevel > 0) {5531 CmdArgs.push_back("-pic-level");5532 CmdArgs.push_back(PICLevel == 1 ? "1" : "2");5533 if (IsPIE)5534 CmdArgs.push_back("-pic-is-pie");5535 if (NoPICDataIsTextRelative)5536 CmdArgs.push_back("-mcmodel=medium");5537 }5538 5539 if (RelocationModel == llvm::Reloc::ROPI ||5540 RelocationModel == llvm::Reloc::ROPI_RWPI)5541 CmdArgs.push_back("-fropi");5542 if (RelocationModel == llvm::Reloc::RWPI ||5543 RelocationModel == llvm::Reloc::ROPI_RWPI)5544 CmdArgs.push_back("-frwpi");5545 5546 if (Arg *A = Args.getLastArg(options::OPT_meabi)) {5547 CmdArgs.push_back("-meabi");5548 CmdArgs.push_back(A->getValue());5549 }5550 5551 // -fsemantic-interposition is forwarded to CC1: set the5552 // "SemanticInterposition" metadata to 1 (make some linkages interposable) and5553 // make default visibility external linkage definitions dso_preemptable.5554 //5555 // -fno-semantic-interposition: if the target supports .Lfoo$local local5556 // aliases (make default visibility external linkage definitions dso_local).5557 // This is the CC1 default for ELF to match COFF/Mach-O.5558 //5559 // Otherwise use Clang's traditional behavior: like5560 // -fno-semantic-interposition but local aliases are not used. So references5561 // can be interposed if not optimized out.5562 if (Triple.isOSBinFormatELF()) {5563 Arg *A = Args.getLastArg(options::OPT_fsemantic_interposition,5564 options::OPT_fno_semantic_interposition);5565 if (RelocationModel != llvm::Reloc::Static && !IsPIE) {5566 // The supported targets need to call AsmPrinter::getSymbolPreferLocal.5567 bool SupportsLocalAlias =5568 Triple.isAArch64() || Triple.isRISCV() || Triple.isX86();5569 if (!A)5570 CmdArgs.push_back("-fhalf-no-semantic-interposition");5571 else if (A->getOption().matches(options::OPT_fsemantic_interposition))5572 A->render(Args, CmdArgs);5573 else if (!SupportsLocalAlias)5574 CmdArgs.push_back("-fhalf-no-semantic-interposition");5575 }5576 }5577 5578 {5579 std::string Model;5580 if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) {5581 if (!TC.isThreadModelSupported(A->getValue()))5582 D.Diag(diag::err_drv_invalid_thread_model_for_target)5583 << A->getValue() << A->getAsString(Args);5584 Model = A->getValue();5585 } else5586 Model = TC.getThreadModel();5587 if (Model != "posix") {5588 CmdArgs.push_back("-mthread-model");5589 CmdArgs.push_back(Args.MakeArgString(Model));5590 }5591 }5592 5593 if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {5594 StringRef Name = A->getValue();5595 if (Name == "SVML") {5596 if (Triple.getArch() != llvm::Triple::x86 &&5597 Triple.getArch() != llvm::Triple::x86_64)5598 D.Diag(diag::err_drv_unsupported_opt_for_target)5599 << Name << Triple.getArchName();5600 } else if (Name == "AMDLIBM") {5601 if (Triple.getArch() != llvm::Triple::x86 &&5602 Triple.getArch() != llvm::Triple::x86_64)5603 D.Diag(diag::err_drv_unsupported_opt_for_target)5604 << Name << Triple.getArchName();5605 } else if (Name == "libmvec") {5606 if (Triple.getArch() != llvm::Triple::x86 &&5607 Triple.getArch() != llvm::Triple::x86_64 &&5608 Triple.getArch() != llvm::Triple::aarch64 &&5609 Triple.getArch() != llvm::Triple::aarch64_be)5610 D.Diag(diag::err_drv_unsupported_opt_for_target)5611 << Name << Triple.getArchName();5612 } else if (Name == "SLEEF" || Name == "ArmPL") {5613 if (Triple.getArch() != llvm::Triple::aarch64 &&5614 Triple.getArch() != llvm::Triple::aarch64_be &&5615 Triple.getArch() != llvm::Triple::riscv64)5616 D.Diag(diag::err_drv_unsupported_opt_for_target)5617 << Name << Triple.getArchName();5618 }5619 A->render(Args, CmdArgs);5620 }5621 5622 if (Args.hasFlag(options::OPT_fmerge_all_constants,5623 options::OPT_fno_merge_all_constants, false))5624 CmdArgs.push_back("-fmerge-all-constants");5625 5626 Args.addOptOutFlag(CmdArgs, options::OPT_fdelete_null_pointer_checks,5627 options::OPT_fno_delete_null_pointer_checks);5628 5629 // LLVM Code Generator Options.5630 5631 if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ_quadword_atomics)) {5632 if (!Triple.isOSAIX() || Triple.isPPC32())5633 D.Diag(diag::err_drv_unsupported_opt_for_target)5634 << A->getSpelling() << RawTriple.str();5635 CmdArgs.push_back("-mabi=quadword-atomics");5636 }5637 5638 if (Arg *A = Args.getLastArg(options::OPT_mlong_double_128)) {5639 // Emit the unsupported option error until the Clang's library integration5640 // support for 128-bit long double is available for AIX.5641 if (Triple.isOSAIX())5642 D.Diag(diag::err_drv_unsupported_opt_for_target)5643 << A->getSpelling() << RawTriple.str();5644 }5645 5646 if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {5647 StringRef V = A->getValue(), V1 = V;5648 unsigned Size;5649 if (V1.consumeInteger(10, Size) || !V1.empty())5650 D.Diag(diag::err_drv_invalid_argument_to_option)5651 << V << A->getOption().getName();5652 else5653 CmdArgs.push_back(Args.MakeArgString("-fwarn-stack-size=" + V));5654 }5655 5656 Args.addOptOutFlag(CmdArgs, options::OPT_fjump_tables,5657 options::OPT_fno_jump_tables);5658 Args.addOptInFlag(CmdArgs, options::OPT_fprofile_sample_accurate,5659 options::OPT_fno_profile_sample_accurate);5660 Args.addOptOutFlag(CmdArgs, options::OPT_fpreserve_as_comments,5661 options::OPT_fno_preserve_as_comments);5662 5663 if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {5664 CmdArgs.push_back("-mregparm");5665 CmdArgs.push_back(A->getValue());5666 }5667 5668 if (Arg *A = Args.getLastArg(options::OPT_maix_struct_return,5669 options::OPT_msvr4_struct_return)) {5670 if (!TC.getTriple().isPPC32()) {5671 D.Diag(diag::err_drv_unsupported_opt_for_target)5672 << A->getSpelling() << RawTriple.str();5673 } else if (A->getOption().matches(options::OPT_maix_struct_return)) {5674 CmdArgs.push_back("-maix-struct-return");5675 } else {5676 assert(A->getOption().matches(options::OPT_msvr4_struct_return));5677 CmdArgs.push_back("-msvr4-struct-return");5678 }5679 }5680 5681 if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,5682 options::OPT_freg_struct_return)) {5683 if (TC.getArch() != llvm::Triple::x86) {5684 D.Diag(diag::err_drv_unsupported_opt_for_target)5685 << A->getSpelling() << RawTriple.str();5686 } else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {5687 CmdArgs.push_back("-fpcc-struct-return");5688 } else {5689 assert(A->getOption().matches(options::OPT_freg_struct_return));5690 CmdArgs.push_back("-freg-struct-return");5691 }5692 }5693 5694 if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false)) {5695 if (Triple.getArch() == llvm::Triple::m68k)5696 CmdArgs.push_back("-fdefault-calling-conv=rtdcall");5697 else5698 CmdArgs.push_back("-fdefault-calling-conv=stdcall");5699 }5700 5701 if (Args.hasArg(options::OPT_fenable_matrix)) {5702 // enable-matrix is needed by both the LangOpts and by LLVM.5703 CmdArgs.push_back("-fenable-matrix");5704 CmdArgs.push_back("-mllvm");5705 CmdArgs.push_back("-enable-matrix");5706 }5707 5708 CodeGenOptions::FramePointerKind FPKeepKind =5709 getFramePointerKind(Args, RawTriple);5710 const char *FPKeepKindStr = nullptr;5711 switch (FPKeepKind) {5712 case CodeGenOptions::FramePointerKind::None:5713 FPKeepKindStr = "-mframe-pointer=none";5714 break;5715 case CodeGenOptions::FramePointerKind::Reserved:5716 FPKeepKindStr = "-mframe-pointer=reserved";5717 break;5718 case CodeGenOptions::FramePointerKind::NonLeafNoReserve:5719 FPKeepKindStr = "-mframe-pointer=non-leaf-no-reserve";5720 break;5721 case CodeGenOptions::FramePointerKind::NonLeaf:5722 FPKeepKindStr = "-mframe-pointer=non-leaf";5723 break;5724 case CodeGenOptions::FramePointerKind::All:5725 FPKeepKindStr = "-mframe-pointer=all";5726 break;5727 }5728 assert(FPKeepKindStr && "unknown FramePointerKind");5729 CmdArgs.push_back(FPKeepKindStr);5730 5731 Args.addOptOutFlag(CmdArgs, options::OPT_fzero_initialized_in_bss,5732 options::OPT_fno_zero_initialized_in_bss);5733 5734 bool OFastEnabled = isOptimizationLevelFast(Args);5735 if (OFastEnabled)5736 D.Diag(diag::warn_drv_deprecated_arg_ofast);5737 // If -Ofast is the optimization level, then -fstrict-aliasing should be5738 // enabled. This alias option is being used to simplify the hasFlag logic.5739 OptSpecifier StrictAliasingAliasOption =5740 OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;5741 // We turn strict aliasing off by default if we're Windows MSVC since MSVC5742 // doesn't do any TBAA.5743 if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,5744 options::OPT_fno_strict_aliasing,5745 !IsWindowsMSVC && !IsUEFI))5746 CmdArgs.push_back("-relaxed-aliasing");5747 if (Args.hasFlag(options::OPT_fno_pointer_tbaa, options::OPT_fpointer_tbaa,5748 false))5749 CmdArgs.push_back("-no-pointer-tbaa");5750 if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,5751 options::OPT_fno_struct_path_tbaa, true))5752 CmdArgs.push_back("-no-struct-path-tbaa");5753 Args.addOptInFlag(CmdArgs, options::OPT_fstrict_enums,5754 options::OPT_fno_strict_enums);5755 Args.addOptOutFlag(CmdArgs, options::OPT_fstrict_return,5756 options::OPT_fno_strict_return);5757 Args.addOptInFlag(CmdArgs, options::OPT_fallow_editor_placeholders,5758 options::OPT_fno_allow_editor_placeholders);5759 Args.addOptInFlag(CmdArgs, options::OPT_fstrict_vtable_pointers,5760 options::OPT_fno_strict_vtable_pointers);5761 Args.addOptInFlag(CmdArgs, options::OPT_fforce_emit_vtables,5762 options::OPT_fno_force_emit_vtables);5763 Args.addOptOutFlag(CmdArgs, options::OPT_foptimize_sibling_calls,5764 options::OPT_fno_optimize_sibling_calls);5765 Args.addOptOutFlag(CmdArgs, options::OPT_fescaping_block_tail_calls,5766 options::OPT_fno_escaping_block_tail_calls);5767 5768 Args.AddLastArg(CmdArgs, options::OPT_ffine_grained_bitfield_accesses,5769 options::OPT_fno_fine_grained_bitfield_accesses);5770 5771 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,5772 options::OPT_fno_experimental_relative_cxx_abi_vtables);5773 5774 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_omit_vtable_rtti,5775 options::OPT_fno_experimental_omit_vtable_rtti);5776 5777 Args.AddLastArg(CmdArgs, options::OPT_fdisable_block_signature_string,5778 options::OPT_fno_disable_block_signature_string);5779 5780 // Handle segmented stacks.5781 Args.addOptInFlag(CmdArgs, options::OPT_fsplit_stack,5782 options::OPT_fno_split_stack);5783 5784 // -fprotect-parens=0 is default.5785 if (Args.hasFlag(options::OPT_fprotect_parens,5786 options::OPT_fno_protect_parens, false))5787 CmdArgs.push_back("-fprotect-parens");5788 5789 RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs, JA);5790 5791 Args.addOptInFlag(CmdArgs, options::OPT_fatomic_remote_memory,5792 options::OPT_fno_atomic_remote_memory);5793 Args.addOptInFlag(CmdArgs, options::OPT_fatomic_fine_grained_memory,5794 options::OPT_fno_atomic_fine_grained_memory);5795 Args.addOptInFlag(CmdArgs, options::OPT_fatomic_ignore_denormal_mode,5796 options::OPT_fno_atomic_ignore_denormal_mode);5797 5798 if (Arg *A = Args.getLastArg(options::OPT_fextend_args_EQ)) {5799 const llvm::Triple::ArchType Arch = TC.getArch();5800 if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {5801 StringRef V = A->getValue();5802 if (V == "64")5803 CmdArgs.push_back("-fextend-arguments=64");5804 else if (V != "32")5805 D.Diag(diag::err_drv_invalid_argument_to_option)5806 << A->getValue() << A->getOption().getName();5807 } else5808 D.Diag(diag::err_drv_unsupported_opt_for_target)5809 << A->getOption().getName() << TripleStr;5810 }5811 5812 if (Arg *A = Args.getLastArg(options::OPT_mdouble_EQ)) {5813 if (TC.getArch() == llvm::Triple::avr)5814 A->render(Args, CmdArgs);5815 else5816 D.Diag(diag::err_drv_unsupported_opt_for_target)5817 << A->getAsString(Args) << TripleStr;5818 }5819 5820 if (Arg *A = Args.getLastArg(options::OPT_LongDouble_Group)) {5821 if (TC.getTriple().isX86())5822 A->render(Args, CmdArgs);5823 else if (TC.getTriple().isPPC() &&5824 (A->getOption().getID() != options::OPT_mlong_double_80))5825 A->render(Args, CmdArgs);5826 else5827 D.Diag(diag::err_drv_unsupported_opt_for_target)5828 << A->getAsString(Args) << TripleStr;5829 }5830 5831 // Decide whether to use verbose asm. Verbose assembly is the default on5832 // toolchains which have the integrated assembler on by default.5833 bool IsIntegratedAssemblerDefault = TC.IsIntegratedAssemblerDefault();5834 if (!Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,5835 IsIntegratedAssemblerDefault))5836 CmdArgs.push_back("-fno-verbose-asm");5837 5838 // Parse 'none' or '$major.$minor'. Disallow -fbinutils-version=0 because we5839 // use that to indicate the MC default in the backend.5840 if (Arg *A = Args.getLastArg(options::OPT_fbinutils_version_EQ)) {5841 StringRef V = A->getValue();5842 unsigned Num;5843 if (V == "none")5844 A->render(Args, CmdArgs);5845 else if (!V.consumeInteger(10, Num) && Num > 0 &&5846 (V.empty() || (V.consume_front(".") &&5847 !V.consumeInteger(10, Num) && V.empty())))5848 A->render(Args, CmdArgs);5849 else5850 D.Diag(diag::err_drv_invalid_argument_to_option)5851 << A->getValue() << A->getOption().getName();5852 }5853 5854 // If toolchain choose to use MCAsmParser for inline asm don't pass the5855 // option to disable integrated-as explicitly.5856 if (!TC.useIntegratedAs() && !TC.parseInlineAsmUsingAsmParser())5857 CmdArgs.push_back("-no-integrated-as");5858 5859 if (Args.hasArg(options::OPT_fdebug_pass_structure)) {5860 CmdArgs.push_back("-mdebug-pass");5861 CmdArgs.push_back("Structure");5862 }5863 if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {5864 CmdArgs.push_back("-mdebug-pass");5865 CmdArgs.push_back("Arguments");5866 }5867 5868 // Enable -mconstructor-aliases except on darwin, where we have to work around5869 // a linker bug (see https://openradar.appspot.com/7198997), and CUDA device5870 // code, where aliases aren't supported.5871 if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())5872 CmdArgs.push_back("-mconstructor-aliases");5873 5874 // Darwin's kernel doesn't support guard variables; just die if we5875 // try to use them.5876 if (KernelOrKext && RawTriple.isOSDarwin())5877 CmdArgs.push_back("-fforbid-guard-variables");5878 5879 if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,5880 Triple.isWindowsGNUEnvironment())) {5881 CmdArgs.push_back("-mms-bitfields");5882 }5883 5884 if (Triple.isOSCygMing()) {5885 Args.addOptOutFlag(CmdArgs, options::OPT_fauto_import,5886 options::OPT_fno_auto_import);5887 }5888 5889 if (Args.hasFlag(options::OPT_fms_volatile, options::OPT_fno_ms_volatile,5890 Triple.isX86() && IsWindowsMSVC))5891 CmdArgs.push_back("-fms-volatile");5892 5893 // Non-PIC code defaults to -fdirect-access-external-data while PIC code5894 // defaults to -fno-direct-access-external-data. Pass the option if different5895 // from the default.5896 if (Arg *A = Args.getLastArg(options::OPT_fdirect_access_external_data,5897 options::OPT_fno_direct_access_external_data)) {5898 if (A->getOption().matches(options::OPT_fdirect_access_external_data) !=5899 (PICLevel == 0))5900 A->render(Args, CmdArgs);5901 } else if (PICLevel == 0 && Triple.isLoongArch()) {5902 // Some targets default to -fno-direct-access-external-data even for5903 // -fno-pic.5904 CmdArgs.push_back("-fno-direct-access-external-data");5905 }5906 5907 if (Triple.isOSBinFormatELF() && (Triple.isAArch64() || Triple.isX86()))5908 Args.addOptOutFlag(CmdArgs, options::OPT_fplt, options::OPT_fno_plt);5909 5910 // -fhosted is default.5911 // TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to5912 // use Freestanding.5913 bool Freestanding =5914 Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||5915 KernelOrKext;5916 if (Freestanding)5917 CmdArgs.push_back("-ffreestanding");5918 5919 Args.AddLastArg(CmdArgs, options::OPT_fno_knr_functions);5920 5921 auto SanitizeArgs = TC.getSanitizerArgs(Args);5922 Args.AddLastArg(CmdArgs,5923 options::OPT_fallow_runtime_check_skip_hot_cutoff_EQ);5924 5925 // This is a coarse approximation of what llvm-gcc actually does, both5926 // -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more5927 // complicated ways.5928 bool IsAsyncUnwindTablesDefault =5929 TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Asynchronous;5930 bool IsSyncUnwindTablesDefault =5931 TC.getDefaultUnwindTableLevel(Args) == ToolChain::UnwindTableLevel::Synchronous;5932 5933 bool AsyncUnwindTables = Args.hasFlag(5934 options::OPT_fasynchronous_unwind_tables,5935 options::OPT_fno_asynchronous_unwind_tables,5936 (IsAsyncUnwindTablesDefault || SanitizeArgs.needsUnwindTables()) &&5937 !Freestanding);5938 bool UnwindTables =5939 Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,5940 IsSyncUnwindTablesDefault && !Freestanding);5941 if (AsyncUnwindTables)5942 CmdArgs.push_back("-funwind-tables=2");5943 else if (UnwindTables)5944 CmdArgs.push_back("-funwind-tables=1");5945 5946 // Prepare `-aux-target-cpu` and `-aux-target-feature` unless5947 // `--gpu-use-aux-triple-only` is specified.5948 if (!Args.getLastArg(options::OPT_gpu_use_aux_triple_only) &&5949 (IsCudaDevice || IsHIPDevice || IsSYCLDevice)) {5950 const ArgList &HostArgs =5951 C.getArgsForToolChain(nullptr, StringRef(), Action::OFK_None);5952 std::string HostCPU =5953 getCPUName(D, HostArgs, *TC.getAuxTriple(), /*FromAs*/ false);5954 if (!HostCPU.empty()) {5955 CmdArgs.push_back("-aux-target-cpu");5956 CmdArgs.push_back(Args.MakeArgString(HostCPU));5957 }5958 getTargetFeatures(D, *TC.getAuxTriple(), HostArgs, CmdArgs,5959 /*ForAS*/ false, /*IsAux*/ true);5960 }5961 5962 TC.addClangTargetOptions(Args, CmdArgs, JA.getOffloadingDeviceKind());5963 5964 addMCModel(D, Args, Triple, RelocationModel, CmdArgs);5965 5966 if (Arg *A = Args.getLastArg(options::OPT_mtls_size_EQ)) {5967 StringRef Value = A->getValue();5968 unsigned TLSSize = 0;5969 Value.getAsInteger(10, TLSSize);5970 if (!Triple.isAArch64() || !Triple.isOSBinFormatELF())5971 D.Diag(diag::err_drv_unsupported_opt_for_target)5972 << A->getOption().getName() << TripleStr;5973 if (TLSSize != 12 && TLSSize != 24 && TLSSize != 32 && TLSSize != 48)5974 D.Diag(diag::err_drv_invalid_int_value)5975 << A->getOption().getName() << Value;5976 Args.AddLastArg(CmdArgs, options::OPT_mtls_size_EQ);5977 }5978 5979 if (isTLSDESCEnabled(TC, Args))5980 CmdArgs.push_back("-enable-tlsdesc");5981 5982 // Add the target cpu5983 std::string CPU = getCPUName(D, Args, Triple, /*FromAs*/ false);5984 if (!CPU.empty()) {5985 CmdArgs.push_back("-target-cpu");5986 CmdArgs.push_back(Args.MakeArgString(CPU));5987 }5988 5989 RenderTargetOptions(Triple, Args, KernelOrKext, CmdArgs);5990 5991 // Add clang-cl arguments.5992 types::ID InputType = Input.getType();5993 if (D.IsCLMode())5994 AddClangCLArgs(Args, InputType, CmdArgs);5995 5996 llvm::codegenoptions::DebugInfoKind DebugInfoKind =5997 llvm::codegenoptions::NoDebugInfo;5998 DwarfFissionKind DwarfFission = DwarfFissionKind::None;5999 renderDebugOptions(TC, D, RawTriple, Args, InputType, CmdArgs, Output,6000 DebugInfoKind, DwarfFission);6001 6002 // Add the split debug info name to the command lines here so we6003 // can propagate it to the backend.6004 bool SplitDWARF = (DwarfFission != DwarfFissionKind::None) &&6005 (TC.getTriple().isOSBinFormatELF() ||6006 TC.getTriple().isOSBinFormatWasm() ||6007 TC.getTriple().isOSBinFormatCOFF()) &&6008 (isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||6009 isa<BackendJobAction>(JA));6010 if (SplitDWARF) {6011 const char *SplitDWARFOut = SplitDebugName(JA, Args, Input, Output);6012 CmdArgs.push_back("-split-dwarf-file");6013 CmdArgs.push_back(SplitDWARFOut);6014 if (DwarfFission == DwarfFissionKind::Split) {6015 CmdArgs.push_back("-split-dwarf-output");6016 CmdArgs.push_back(SplitDWARFOut);6017 }6018 }6019 6020 // Pass the linker version in use.6021 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {6022 CmdArgs.push_back("-target-linker-version");6023 CmdArgs.push_back(A->getValue());6024 }6025 6026 // Explicitly error on some things we know we don't support and can't just6027 // ignore.6028 if (!Args.hasArg(options::OPT_fallow_unsupported)) {6029 Arg *Unsupported;6030 if (types::isCXX(InputType) && RawTriple.isOSDarwin() &&6031 TC.getArch() == llvm::Triple::x86) {6032 if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||6033 (Unsupported = Args.getLastArg(options::OPT_mkernel)))6034 D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)6035 << Unsupported->getOption().getName();6036 }6037 // The faltivec option has been superseded by the maltivec option.6038 if ((Unsupported = Args.getLastArg(options::OPT_faltivec)))6039 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)6040 << Unsupported->getOption().getName()6041 << "please use -maltivec and include altivec.h explicitly";6042 if ((Unsupported = Args.getLastArg(options::OPT_fno_altivec)))6043 D.Diag(diag::err_drv_clang_unsupported_opt_faltivec)6044 << Unsupported->getOption().getName() << "please use -mno-altivec";6045 }6046 6047 Args.AddAllArgs(CmdArgs, options::OPT_v);6048 6049 if (Args.getLastArg(options::OPT_H)) {6050 CmdArgs.push_back("-H");6051 CmdArgs.push_back("-sys-header-deps");6052 }6053 Args.AddAllArgs(CmdArgs, options::OPT_fshow_skipped_includes);6054 6055 if (D.CCPrintHeadersFormat && !D.CCGenDiagnostics) {6056 CmdArgs.push_back("-header-include-file");6057 CmdArgs.push_back(!D.CCPrintHeadersFilename.empty()6058 ? D.CCPrintHeadersFilename.c_str()6059 : "-");6060 CmdArgs.push_back("-sys-header-deps");6061 CmdArgs.push_back(Args.MakeArgString(6062 "-header-include-format=" +6063 std::string(headerIncludeFormatKindToString(D.CCPrintHeadersFormat))));6064 CmdArgs.push_back(6065 Args.MakeArgString("-header-include-filtering=" +6066 std::string(headerIncludeFilteringKindToString(6067 D.CCPrintHeadersFiltering))));6068 }6069 Args.AddLastArg(CmdArgs, options::OPT_P);6070 Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);6071 6072 if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {6073 CmdArgs.push_back("-diagnostic-log-file");6074 CmdArgs.push_back(!D.CCLogDiagnosticsFilename.empty()6075 ? D.CCLogDiagnosticsFilename.c_str()6076 : "-");6077 }6078 6079 // Give the gen diagnostics more chances to succeed, by avoiding intentional6080 // crashes.6081 if (D.CCGenDiagnostics)6082 CmdArgs.push_back("-disable-pragma-debug-crash");6083 6084 // Allow backend to put its diagnostic files in the same place as frontend6085 // crash diagnostics files.6086 if (Args.hasArg(options::OPT_fcrash_diagnostics_dir)) {6087 StringRef Dir = Args.getLastArgValue(options::OPT_fcrash_diagnostics_dir);6088 CmdArgs.push_back("-mllvm");6089 CmdArgs.push_back(Args.MakeArgString("-crash-diagnostics-dir=" + Dir));6090 }6091 6092 bool UseSeparateSections = isUseSeparateSections(Triple);6093 6094 if (Args.hasFlag(options::OPT_ffunction_sections,6095 options::OPT_fno_function_sections, UseSeparateSections)) {6096 CmdArgs.push_back("-ffunction-sections");6097 }6098 6099 if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_address_map,6100 options::OPT_fno_basic_block_address_map)) {6101 if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF()) {6102 if (A->getOption().matches(options::OPT_fbasic_block_address_map))6103 A->render(Args, CmdArgs);6104 } else {6105 D.Diag(diag::err_drv_unsupported_opt_for_target)6106 << A->getAsString(Args) << TripleStr;6107 }6108 }6109 6110 if (Arg *A = Args.getLastArg(options::OPT_fbasic_block_sections_EQ)) {6111 StringRef Val = A->getValue();6112 if (Val == "labels") {6113 D.Diag(diag::warn_drv_deprecated_arg)6114 << A->getAsString(Args) << /*hasReplacement=*/true6115 << "-fbasic-block-address-map";6116 CmdArgs.push_back("-fbasic-block-address-map");6117 } else if (Triple.isX86() && Triple.isOSBinFormatELF()) {6118 if (Val != "all" && Val != "none" && !Val.starts_with("list="))6119 D.Diag(diag::err_drv_invalid_value)6120 << A->getAsString(Args) << A->getValue();6121 else6122 A->render(Args, CmdArgs);6123 } else if (Triple.isAArch64() && Triple.isOSBinFormatELF()) {6124 // "all" is not supported on AArch64 since branch relaxation creates new6125 // basic blocks for some cross-section branches.6126 if (Val != "labels" && Val != "none" && !Val.starts_with("list="))6127 D.Diag(diag::err_drv_invalid_value)6128 << A->getAsString(Args) << A->getValue();6129 else6130 A->render(Args, CmdArgs);6131 } else if (Triple.isNVPTX()) {6132 // Do not pass the option to the GPU compilation. We still want it enabled6133 // for the host-side compilation, so seeing it here is not an error.6134 } else if (Val != "none") {6135 // =none is allowed everywhere. It's useful for overriding the option6136 // and is the same as not specifying the option.6137 D.Diag(diag::err_drv_unsupported_opt_for_target)6138 << A->getAsString(Args) << TripleStr;6139 }6140 }6141 6142 bool HasDefaultDataSections = Triple.isOSBinFormatXCOFF();6143 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,6144 UseSeparateSections || HasDefaultDataSections)) {6145 CmdArgs.push_back("-fdata-sections");6146 }6147 6148 Args.addOptOutFlag(CmdArgs, options::OPT_funique_section_names,6149 options::OPT_fno_unique_section_names);6150 Args.addOptInFlag(CmdArgs, options::OPT_fseparate_named_sections,6151 options::OPT_fno_separate_named_sections);6152 Args.addOptInFlag(CmdArgs, options::OPT_funique_internal_linkage_names,6153 options::OPT_fno_unique_internal_linkage_names);6154 Args.addOptInFlag(CmdArgs, options::OPT_funique_basic_block_section_names,6155 options::OPT_fno_unique_basic_block_section_names);6156 6157 if (Arg *A = Args.getLastArg(options::OPT_fsplit_machine_functions,6158 options::OPT_fno_split_machine_functions)) {6159 if (!A->getOption().matches(options::OPT_fno_split_machine_functions)) {6160 // This codegen pass is only available on x86 and AArch64 ELF targets.6161 if ((Triple.isX86() || Triple.isAArch64()) && Triple.isOSBinFormatELF())6162 A->render(Args, CmdArgs);6163 else6164 D.Diag(diag::err_drv_unsupported_opt_for_target)6165 << A->getAsString(Args) << TripleStr;6166 }6167 }6168 6169 Args.AddLastArg(CmdArgs, options::OPT_finstrument_functions,6170 options::OPT_finstrument_functions_after_inlining,6171 options::OPT_finstrument_function_entry_bare);6172 Args.AddLastArg(CmdArgs, options::OPT_fconvergent_functions,6173 options::OPT_fno_convergent_functions);6174 6175 // NVPTX doesn't support PGO or coverage6176 if (!Triple.isNVPTX())6177 addPGOAndCoverageFlags(TC, C, JA, Output, Args, SanitizeArgs, CmdArgs);6178 6179 Args.AddLastArg(CmdArgs, options::OPT_fclang_abi_compat_EQ);6180 6181 if (getLastProfileSampleUseArg(Args) &&6182 Args.hasFlag(options::OPT_fsample_profile_use_profi,6183 options::OPT_fno_sample_profile_use_profi, true)) {6184 CmdArgs.push_back("-mllvm");6185 CmdArgs.push_back("-sample-profile-use-profi");6186 }6187 6188 // Add runtime flag for PS4/PS5 when PGO, coverage, or sanitizers are enabled.6189 if (RawTriple.isPS() &&6190 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {6191 PScpu::addProfileRTArgs(TC, Args, CmdArgs);6192 PScpu::addSanitizerArgs(TC, Args, CmdArgs);6193 }6194 6195 // Pass options for controlling the default header search paths.6196 if (Args.hasArg(options::OPT_nostdinc)) {6197 CmdArgs.push_back("-nostdsysteminc");6198 CmdArgs.push_back("-nobuiltininc");6199 } else {6200 if (Args.hasArg(options::OPT_nostdlibinc))6201 CmdArgs.push_back("-nostdsysteminc");6202 Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);6203 Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);6204 }6205 6206 // Pass the path to compiler resource files.6207 CmdArgs.push_back("-resource-dir");6208 CmdArgs.push_back(D.ResourceDir.c_str());6209 6210 Args.AddLastArg(CmdArgs, options::OPT_working_directory);6211 6212 // Add preprocessing options like -I, -D, etc. if we are using the6213 // preprocessor.6214 //6215 // FIXME: Support -fpreprocessed6216 if (types::getPreprocessedType(InputType) != types::TY_INVALID)6217 AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);6218 6219 // Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes6220 // that "The compiler can only warn and ignore the option if not recognized".6221 // When building with ccache, it will pass -D options to clang even on6222 // preprocessed inputs and configure concludes that -fPIC is not supported.6223 Args.ClaimAllArgs(options::OPT_D);6224 6225 // Warn about ignored options to clang.6226 for (const Arg *A :6227 Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {6228 D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);6229 A->claim();6230 }6231 6232 for (const Arg *A :6233 Args.filtered(options::OPT_clang_ignored_legacy_options_Group)) {6234 D.Diag(diag::warn_ignored_clang_option) << A->getAsString(Args);6235 A->claim();6236 }6237 6238 claimNoWarnArgs(Args);6239 6240 Args.AddAllArgs(CmdArgs, options::OPT_R_Group);6241 6242 for (const Arg *A :6243 Args.filtered(options::OPT_W_Group, options::OPT__SLASH_wd)) {6244 A->claim();6245 if (A->getOption().getID() == options::OPT__SLASH_wd) {6246 unsigned WarningNumber;6247 if (StringRef(A->getValue()).getAsInteger(10, WarningNumber)) {6248 D.Diag(diag::err_drv_invalid_int_value)6249 << A->getAsString(Args) << A->getValue();6250 continue;6251 }6252 6253 if (auto Group = diagGroupFromCLWarningID(WarningNumber)) {6254 CmdArgs.push_back(Args.MakeArgString(6255 "-Wno-" + DiagnosticIDs::getWarningOptionForGroup(*Group)));6256 }6257 continue;6258 }6259 A->render(Args, CmdArgs);6260 }6261 6262 Args.AddAllArgs(CmdArgs, options::OPT_Wsystem_headers_in_module_EQ);6263 6264 if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))6265 CmdArgs.push_back("-pedantic");6266 Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);6267 Args.AddLastArg(CmdArgs, options::OPT_w);6268 6269 Args.addOptInFlag(CmdArgs, options::OPT_ffixed_point,6270 options::OPT_fno_fixed_point);6271 6272 if (Arg *A = Args.getLastArg(options::OPT_fcxx_abi_EQ))6273 A->render(Args, CmdArgs);6274 6275 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_relative_cxx_abi_vtables,6276 options::OPT_fno_experimental_relative_cxx_abi_vtables);6277 6278 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_omit_vtable_rtti,6279 options::OPT_fno_experimental_omit_vtable_rtti);6280 6281 if (Arg *A = Args.getLastArg(options::OPT_ffuchsia_api_level_EQ))6282 A->render(Args, CmdArgs);6283 6284 // Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}6285 // (-ansi is equivalent to -std=c89 or -std=c++98).6286 //6287 // If a std is supplied, only add -trigraphs if it follows the6288 // option.6289 bool ImplyVCPPCVer = false;6290 bool ImplyVCPPCXXVer = false;6291 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);6292 if (Std) {6293 if (Std->getOption().matches(options::OPT_ansi))6294 if (types::isCXX(InputType))6295 CmdArgs.push_back("-std=c++98");6296 else6297 CmdArgs.push_back("-std=c89");6298 else6299 Std->render(Args, CmdArgs);6300 6301 // If -f(no-)trigraphs appears after the language standard flag, honor it.6302 if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,6303 options::OPT_ftrigraphs,6304 options::OPT_fno_trigraphs))6305 if (A != Std)6306 A->render(Args, CmdArgs);6307 } else {6308 // Honor -std-default.6309 //6310 // FIXME: Clang doesn't correctly handle -std= when the input language6311 // doesn't match. For the time being just ignore this for C++ inputs;6312 // eventually we want to do all the standard defaulting here instead of6313 // splitting it between the driver and clang -cc1.6314 if (!types::isCXX(InputType)) {6315 if (!Args.hasArg(options::OPT__SLASH_std)) {6316 Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",6317 /*Joined=*/true);6318 } else6319 ImplyVCPPCVer = true;6320 }6321 else if (IsWindowsMSVC)6322 ImplyVCPPCXXVer = true;6323 6324 Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,6325 options::OPT_fno_trigraphs);6326 }6327 6328 // GCC's behavior for -Wwrite-strings is a bit strange:6329 // * In C, this "warning flag" changes the types of string literals from6330 // 'char[N]' to 'const char[N]', and thus triggers an unrelated warning6331 // for the discarded qualifier.6332 // * In C++, this is just a normal warning flag.6333 //6334 // Implementing this warning correctly in C is hard, so we follow GCC's6335 // behavior for now. FIXME: Directly diagnose uses of a string literal as6336 // a non-const char* in C, rather than using this crude hack.6337 if (!types::isCXX(InputType)) {6338 // FIXME: This should behave just like a warning flag, and thus should also6339 // respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.6340 Arg *WriteStrings =6341 Args.getLastArg(options::OPT_Wwrite_strings,6342 options::OPT_Wno_write_strings, options::OPT_w);6343 if (WriteStrings &&6344 WriteStrings->getOption().matches(options::OPT_Wwrite_strings))6345 CmdArgs.push_back("-fconst-strings");6346 }6347 6348 // GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active6349 // during C++ compilation, which it is by default. GCC keeps this define even6350 // in the presence of '-w', match this behavior bug-for-bug.6351 if (types::isCXX(InputType) &&6352 Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,6353 true)) {6354 CmdArgs.push_back("-fdeprecated-macro");6355 }6356 6357 // Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.6358 if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {6359 if (Asm->getOption().matches(options::OPT_fasm))6360 CmdArgs.push_back("-fgnu-keywords");6361 else6362 CmdArgs.push_back("-fno-gnu-keywords");6363 }6364 6365 if (!ShouldEnableAutolink(Args, TC, JA))6366 CmdArgs.push_back("-fno-autolink");6367 6368 Args.AddLastArg(CmdArgs, options::OPT_ftemplate_depth_EQ);6369 Args.AddLastArg(CmdArgs, options::OPT_foperator_arrow_depth_EQ);6370 Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_depth_EQ);6371 Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_steps_EQ);6372 6373 Args.AddLastArg(CmdArgs, options::OPT_fexperimental_library);6374 6375 if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))6376 CmdArgs.push_back("-fexperimental-new-constant-interpreter");6377 6378 if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {6379 CmdArgs.push_back("-fbracket-depth");6380 CmdArgs.push_back(A->getValue());6381 }6382 6383 if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,6384 options::OPT_Wlarge_by_value_copy_def)) {6385 if (A->getNumValues()) {6386 StringRef bytes = A->getValue();6387 CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));6388 } else6389 CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value6390 }6391 6392 if (Args.hasArg(options::OPT_relocatable_pch))6393 CmdArgs.push_back("-relocatable-pch");6394 6395 if (const Arg *A = Args.getLastArg(options::OPT_fcf_runtime_abi_EQ)) {6396 static const char *kCFABIs[] = {6397 "standalone", "objc", "swift", "swift-5.0", "swift-4.2", "swift-4.1",6398 };6399 6400 if (!llvm::is_contained(kCFABIs, StringRef(A->getValue())))6401 D.Diag(diag::err_drv_invalid_cf_runtime_abi) << A->getValue();6402 else6403 A->render(Args, CmdArgs);6404 }6405 6406 if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {6407 CmdArgs.push_back("-fconstant-string-class");6408 CmdArgs.push_back(A->getValue());6409 }6410 6411 if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {6412 CmdArgs.push_back("-ftabstop");6413 CmdArgs.push_back(A->getValue());6414 }6415 6416 if (Args.hasFlag(options::OPT_fexperimental_call_graph_section,6417 options::OPT_fno_experimental_call_graph_section, false))6418 CmdArgs.push_back("-fexperimental-call-graph-section");6419 6420 Args.addOptInFlag(CmdArgs, options::OPT_fstack_size_section,6421 options::OPT_fno_stack_size_section);6422 6423 if (Args.hasArg(options::OPT_fstack_usage)) {6424 CmdArgs.push_back("-stack-usage-file");6425 6426 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {6427 SmallString<128> OutputFilename(OutputOpt->getValue());6428 llvm::sys::path::replace_extension(OutputFilename, "su");6429 CmdArgs.push_back(Args.MakeArgString(OutputFilename));6430 } else6431 CmdArgs.push_back(6432 Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".su"));6433 }6434 6435 CmdArgs.push_back("-ferror-limit");6436 if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))6437 CmdArgs.push_back(A->getValue());6438 else6439 CmdArgs.push_back("19");6440 6441 Args.AddLastArg(CmdArgs, options::OPT_fconstexpr_backtrace_limit_EQ);6442 Args.AddLastArg(CmdArgs, options::OPT_fmacro_backtrace_limit_EQ);6443 Args.AddLastArg(CmdArgs, options::OPT_ftemplate_backtrace_limit_EQ);6444 Args.AddLastArg(CmdArgs, options::OPT_fspell_checking_limit_EQ);6445 Args.AddLastArg(CmdArgs, options::OPT_fcaret_diagnostics_max_lines_EQ);6446 6447 // Pass -fmessage-length=.6448 unsigned MessageLength = 0;6449 if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {6450 StringRef V(A->getValue());6451 if (V.getAsInteger(0, MessageLength))6452 D.Diag(diag::err_drv_invalid_argument_to_option)6453 << V << A->getOption().getName();6454 } else {6455 // If -fmessage-length=N was not specified, determine whether this is a6456 // terminal and, if so, implicitly define -fmessage-length appropriately.6457 MessageLength = llvm::sys::Process::StandardErrColumns();6458 }6459 if (MessageLength != 0)6460 CmdArgs.push_back(6461 Args.MakeArgString("-fmessage-length=" + Twine(MessageLength)));6462 6463 if (Arg *A = Args.getLastArg(options::OPT_frandomize_layout_seed_EQ))6464 CmdArgs.push_back(6465 Args.MakeArgString("-frandomize-layout-seed=" + Twine(A->getValue(0))));6466 6467 if (Arg *A = Args.getLastArg(options::OPT_frandomize_layout_seed_file_EQ))6468 CmdArgs.push_back(Args.MakeArgString("-frandomize-layout-seed-file=" +6469 Twine(A->getValue(0))));6470 6471 // -fvisibility= and -fvisibility-ms-compat are of a piece.6472 if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,6473 options::OPT_fvisibility_ms_compat)) {6474 if (A->getOption().matches(options::OPT_fvisibility_EQ)) {6475 A->render(Args, CmdArgs);6476 } else {6477 assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));6478 CmdArgs.push_back("-fvisibility=hidden");6479 CmdArgs.push_back("-ftype-visibility=default");6480 }6481 } else if (IsOpenMPDevice) {6482 // When compiling for the OpenMP device we want protected visibility by6483 // default. This prevents the device from accidentally preempting code on6484 // the host, makes the system more robust, and improves performance.6485 CmdArgs.push_back("-fvisibility=protected");6486 }6487 6488 // PS4/PS5 process these options in addClangTargetOptions.6489 if (!RawTriple.isPS()) {6490 if (const Arg *A =6491 Args.getLastArg(options::OPT_fvisibility_from_dllstorageclass,6492 options::OPT_fno_visibility_from_dllstorageclass)) {6493 if (A->getOption().matches(6494 options::OPT_fvisibility_from_dllstorageclass)) {6495 CmdArgs.push_back("-fvisibility-from-dllstorageclass");6496 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_dllexport_EQ);6497 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_nodllstorageclass_EQ);6498 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_externs_dllimport_EQ);6499 Args.AddLastArg(CmdArgs,6500 options::OPT_fvisibility_externs_nodllstorageclass_EQ);6501 }6502 }6503 }6504 6505 if (Args.hasFlag(options::OPT_fvisibility_inlines_hidden,6506 options::OPT_fno_visibility_inlines_hidden, false))6507 CmdArgs.push_back("-fvisibility-inlines-hidden");6508 6509 Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden_static_local_var,6510 options::OPT_fno_visibility_inlines_hidden_static_local_var);6511 6512 // -fvisibility-global-new-delete-hidden is a deprecated spelling of6513 // -fvisibility-global-new-delete=force-hidden.6514 if (const Arg *A =6515 Args.getLastArg(options::OPT_fvisibility_global_new_delete_hidden)) {6516 D.Diag(diag::warn_drv_deprecated_arg)6517 << A->getAsString(Args) << /*hasReplacement=*/true6518 << "-fvisibility-global-new-delete=force-hidden";6519 }6520 6521 if (const Arg *A =6522 Args.getLastArg(options::OPT_fvisibility_global_new_delete_EQ,6523 options::OPT_fvisibility_global_new_delete_hidden)) {6524 if (A->getOption().matches(options::OPT_fvisibility_global_new_delete_EQ)) {6525 A->render(Args, CmdArgs);6526 } else {6527 assert(A->getOption().matches(6528 options::OPT_fvisibility_global_new_delete_hidden));6529 CmdArgs.push_back("-fvisibility-global-new-delete=force-hidden");6530 }6531 }6532 6533 Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);6534 6535 if (Args.hasFlag(options::OPT_fnew_infallible,6536 options::OPT_fno_new_infallible, false))6537 CmdArgs.push_back("-fnew-infallible");6538 6539 if (Args.hasFlag(options::OPT_fno_operator_names,6540 options::OPT_foperator_names, false))6541 CmdArgs.push_back("-fno-operator-names");6542 6543 // Forward -f (flag) options which we can pass directly.6544 Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);6545 Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);6546 Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);6547 Args.AddLastArg(CmdArgs, options::OPT_fzero_call_used_regs_EQ);6548 Args.AddLastArg(CmdArgs, options::OPT_fraw_string_literals,6549 options::OPT_fno_raw_string_literals);6550 6551 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,6552 Triple.hasDefaultEmulatedTLS()))6553 CmdArgs.push_back("-femulated-tls");6554 6555 Args.addOptInFlag(CmdArgs, options::OPT_fcheck_new,6556 options::OPT_fno_check_new);6557 6558 if (Arg *A = Args.getLastArg(options::OPT_fzero_call_used_regs_EQ)) {6559 // FIXME: There's no reason for this to be restricted to X86. The backend6560 // code needs to be changed to include the appropriate function calls6561 // automatically.6562 if (!Triple.isX86() && !Triple.isAArch64())6563 D.Diag(diag::err_drv_unsupported_opt_for_target)6564 << A->getAsString(Args) << TripleStr;6565 }6566 6567 // AltiVec-like language extensions aren't relevant for assembling.6568 if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)6569 Args.AddLastArg(CmdArgs, options::OPT_fzvector);6570 6571 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);6572 Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);6573 6574 // Forward flags for OpenMP. We don't do this if the current action is an6575 // device offloading action other than OpenMP.6576 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,6577 options::OPT_fno_openmp, false) &&6578 !Args.hasFlag(options::OPT_foffload_via_llvm,6579 options::OPT_fno_offload_via_llvm, false) &&6580 (JA.isDeviceOffloading(Action::OFK_None) ||6581 JA.isDeviceOffloading(Action::OFK_OpenMP))) {6582 switch (D.getOpenMPRuntime(Args)) {6583 case Driver::OMPRT_OMP:6584 case Driver::OMPRT_IOMP5:6585 // Clang can generate useful OpenMP code for these two runtime libraries.6586 CmdArgs.push_back("-fopenmp");6587 6588 // If no option regarding the use of TLS in OpenMP codegeneration is6589 // given, decide a default based on the target. Otherwise rely on the6590 // options and pass the right information to the frontend.6591 if (!Args.hasFlag(options::OPT_fopenmp_use_tls,6592 options::OPT_fnoopenmp_use_tls, /*Default=*/true))6593 CmdArgs.push_back("-fnoopenmp-use-tls");6594 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,6595 options::OPT_fno_openmp_simd);6596 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_enable_irbuilder);6597 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);6598 if (!Args.hasFlag(options::OPT_fopenmp_extensions,6599 options::OPT_fno_openmp_extensions, /*Default=*/true))6600 CmdArgs.push_back("-fno-openmp-extensions");6601 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_number_of_sm_EQ);6602 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_cuda_blocks_per_sm_EQ);6603 Args.AddAllArgs(CmdArgs,6604 options::OPT_fopenmp_cuda_teams_reduction_recs_num_EQ);6605 if (Args.hasFlag(options::OPT_fopenmp_optimistic_collapse,6606 options::OPT_fno_openmp_optimistic_collapse,6607 /*Default=*/false))6608 CmdArgs.push_back("-fopenmp-optimistic-collapse");6609 6610 // When in OpenMP offloading mode with NVPTX target, forward6611 // cuda-mode flag6612 if (Args.hasFlag(options::OPT_fopenmp_cuda_mode,6613 options::OPT_fno_openmp_cuda_mode, /*Default=*/false))6614 CmdArgs.push_back("-fopenmp-cuda-mode");6615 6616 // When in OpenMP offloading mode, enable debugging on the device.6617 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_target_debug_EQ);6618 if (Args.hasFlag(options::OPT_fopenmp_target_debug,6619 options::OPT_fno_openmp_target_debug, /*Default=*/false))6620 CmdArgs.push_back("-fopenmp-target-debug");6621 6622 // When in OpenMP offloading mode, forward assumptions information about6623 // thread and team counts in the device.6624 if (Args.hasFlag(options::OPT_fopenmp_assume_teams_oversubscription,6625 options::OPT_fno_openmp_assume_teams_oversubscription,6626 /*Default=*/false))6627 CmdArgs.push_back("-fopenmp-assume-teams-oversubscription");6628 if (Args.hasFlag(options::OPT_fopenmp_assume_threads_oversubscription,6629 options::OPT_fno_openmp_assume_threads_oversubscription,6630 /*Default=*/false))6631 CmdArgs.push_back("-fopenmp-assume-threads-oversubscription");6632 if (Args.hasArg(options::OPT_fopenmp_assume_no_thread_state))6633 CmdArgs.push_back("-fopenmp-assume-no-thread-state");6634 if (Args.hasArg(options::OPT_fopenmp_assume_no_nested_parallelism))6635 CmdArgs.push_back("-fopenmp-assume-no-nested-parallelism");6636 if (Args.hasArg(options::OPT_fopenmp_offload_mandatory))6637 CmdArgs.push_back("-fopenmp-offload-mandatory");6638 if (Args.hasArg(options::OPT_fopenmp_force_usm))6639 CmdArgs.push_back("-fopenmp-force-usm");6640 break;6641 default:6642 // By default, if Clang doesn't know how to generate useful OpenMP code6643 // for a specific runtime library, we just don't pass the '-fopenmp' flag6644 // down to the actual compilation.6645 // FIXME: It would be better to have a mode which *only* omits IR6646 // generation based on the OpenMP support so that we get consistent6647 // semantic analysis, etc.6648 break;6649 }6650 } else {6651 Args.AddLastArg(CmdArgs, options::OPT_fopenmp_simd,6652 options::OPT_fno_openmp_simd);6653 Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);6654 Args.addOptOutFlag(CmdArgs, options::OPT_fopenmp_extensions,6655 options::OPT_fno_openmp_extensions);6656 }6657 // Forward the offload runtime change to code generation, liboffload implies6658 // new driver. Otherwise, check if we should forward the new driver to change6659 // offloading code generation.6660 if (Args.hasFlag(options::OPT_foffload_via_llvm,6661 options::OPT_fno_offload_via_llvm, false)) {6662 CmdArgs.append({"--offload-new-driver", "-foffload-via-llvm"});6663 } else if (Args.hasFlag(options::OPT_offload_new_driver,6664 options::OPT_no_offload_new_driver,6665 C.isOffloadingHostKind(Action::OFK_Cuda))) {6666 CmdArgs.push_back("--offload-new-driver");6667 }6668 6669 const XRayArgs &XRay = TC.getXRayArgs(Args);6670 XRay.addArgs(TC, Args, CmdArgs, InputType);6671 6672 for (const auto &Filename :6673 Args.getAllArgValues(options::OPT_fprofile_list_EQ)) {6674 if (D.getVFS().exists(Filename))6675 CmdArgs.push_back(Args.MakeArgString("-fprofile-list=" + Filename));6676 else6677 D.Diag(clang::diag::err_drv_no_such_file) << Filename;6678 }6679 6680 if (Arg *A = Args.getLastArg(options::OPT_fpatchable_function_entry_EQ)) {6681 StringRef S0 = A->getValue(), S = S0;6682 unsigned Size, Offset = 0;6683 if (!Triple.isAArch64() && !Triple.isLoongArch() && !Triple.isRISCV() &&6684 !Triple.isX86() &&6685 !(!Triple.isOSAIX() && (Triple.getArch() == llvm::Triple::ppc ||6686 Triple.getArch() == llvm::Triple::ppc64 ||6687 Triple.getArch() == llvm::Triple::ppc64le)))6688 D.Diag(diag::err_drv_unsupported_opt_for_target)6689 << A->getAsString(Args) << TripleStr;6690 else if (S.consumeInteger(10, Size) ||6691 (!S.empty() &&6692 (!S.consume_front(",") || S.consumeInteger(10, Offset))) ||6693 (!S.empty() && (!S.consume_front(",") || S.empty())))6694 D.Diag(diag::err_drv_invalid_argument_to_option)6695 << S0 << A->getOption().getName();6696 else if (Size < Offset)6697 D.Diag(diag::err_drv_unsupported_fpatchable_function_entry_argument);6698 else {6699 CmdArgs.push_back(Args.MakeArgString(A->getSpelling() + Twine(Size)));6700 CmdArgs.push_back(Args.MakeArgString(6701 "-fpatchable-function-entry-offset=" + Twine(Offset)));6702 if (!S.empty())6703 CmdArgs.push_back(6704 Args.MakeArgString("-fpatchable-function-entry-section=" + S));6705 }6706 }6707 6708 Args.AddLastArg(CmdArgs, options::OPT_fms_hotpatch);6709 6710 if (Args.hasArg(options::OPT_fms_secure_hotpatch_functions_file))6711 Args.AddLastArg(CmdArgs, options::OPT_fms_secure_hotpatch_functions_file);6712 6713 for (const auto &A :6714 Args.getAllArgValues(options::OPT_fms_secure_hotpatch_functions_list))6715 CmdArgs.push_back(6716 Args.MakeArgString("-fms-secure-hotpatch-functions-list=" + Twine(A)));6717 6718 if (TC.SupportsProfiling()) {6719 Args.AddLastArg(CmdArgs, options::OPT_pg);6720 6721 llvm::Triple::ArchType Arch = TC.getArch();6722 if (Arg *A = Args.getLastArg(options::OPT_mfentry)) {6723 if (Arch == llvm::Triple::systemz || TC.getTriple().isX86())6724 A->render(Args, CmdArgs);6725 else6726 D.Diag(diag::err_drv_unsupported_opt_for_target)6727 << A->getAsString(Args) << TripleStr;6728 }6729 if (Arg *A = Args.getLastArg(options::OPT_mnop_mcount)) {6730 if (Arch == llvm::Triple::systemz)6731 A->render(Args, CmdArgs);6732 else6733 D.Diag(diag::err_drv_unsupported_opt_for_target)6734 << A->getAsString(Args) << TripleStr;6735 }6736 if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {6737 if (Arch == llvm::Triple::systemz)6738 A->render(Args, CmdArgs);6739 else6740 D.Diag(diag::err_drv_unsupported_opt_for_target)6741 << A->getAsString(Args) << TripleStr;6742 }6743 }6744 6745 if (Arg *A = Args.getLastArgNoClaim(options::OPT_pg)) {6746 if (TC.getTriple().isOSzOS()) {6747 D.Diag(diag::err_drv_unsupported_opt_for_target)6748 << A->getAsString(Args) << TripleStr;6749 }6750 }6751 if (Arg *A = Args.getLastArgNoClaim(options::OPT_p)) {6752 if (!(TC.getTriple().isOSAIX() || TC.getTriple().isOSOpenBSD())) {6753 D.Diag(diag::err_drv_unsupported_opt_for_target)6754 << A->getAsString(Args) << TripleStr;6755 }6756 }6757 if (Arg *A = Args.getLastArgNoClaim(options::OPT_p, options::OPT_pg)) {6758 if (A->getOption().matches(options::OPT_p)) {6759 A->claim();6760 if (TC.getTriple().isOSAIX() && !Args.hasArgNoClaim(options::OPT_pg))6761 CmdArgs.push_back("-pg");6762 }6763 }6764 6765 // Reject AIX-specific link options on other targets.6766 if (!TC.getTriple().isOSAIX()) {6767 for (const Arg *A : Args.filtered(options::OPT_b, options::OPT_K,6768 options::OPT_mxcoff_build_id_EQ)) {6769 D.Diag(diag::err_drv_unsupported_opt_for_target)6770 << A->getSpelling() << TripleStr;6771 }6772 }6773 6774 if (Args.getLastArg(options::OPT_fapple_kext) ||6775 (Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))6776 CmdArgs.push_back("-fapple-kext");6777 6778 Args.AddLastArg(CmdArgs, options::OPT_altivec_src_compat);6779 Args.AddLastArg(CmdArgs, options::OPT_flax_vector_conversions_EQ);6780 Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);6781 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);6782 Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);6783 Args.AddLastArg(CmdArgs, options::OPT_ftime_report);6784 Args.AddLastArg(CmdArgs, options::OPT_ftime_report_EQ);6785 Args.AddLastArg(CmdArgs, options::OPT_ftime_report_json);6786 Args.AddLastArg(CmdArgs, options::OPT_ftrapv);6787 Args.AddLastArg(CmdArgs, options::OPT_malign_double);6788 Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);6789 6790 if (const char *Name = C.getTimeTraceFile(&JA)) {6791 CmdArgs.push_back(Args.MakeArgString("-ftime-trace=" + Twine(Name)));6792 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);6793 Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_verbose);6794 }6795 6796 if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {6797 CmdArgs.push_back("-ftrapv-handler");6798 CmdArgs.push_back(A->getValue());6799 }6800 6801 Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);6802 6803 // Handle -f[no-]wrapv and -f[no-]strict-overflow, which are used by both6804 // clang and flang.6805 renderCommonIntegerOverflowOptions(Args, CmdArgs);6806 6807 Args.AddLastArg(CmdArgs, options::OPT_ffinite_loops,6808 options::OPT_fno_finite_loops);6809 6810 Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);6811 Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,6812 options::OPT_fno_unroll_loops);6813 Args.AddLastArg(CmdArgs, options::OPT_floop_interchange,6814 options::OPT_fno_loop_interchange);6815 Args.addOptInFlag(CmdArgs, options::OPT_fexperimental_loop_fusion,6816 options::OPT_fno_experimental_loop_fusion);6817 6818 Args.AddLastArg(CmdArgs, options::OPT_fstrict_flex_arrays_EQ);6819 6820 Args.AddLastArg(CmdArgs, options::OPT_pthread);6821 6822 Args.addOptInFlag(CmdArgs, options::OPT_mspeculative_load_hardening,6823 options::OPT_mno_speculative_load_hardening);6824 6825 RenderSSPOptions(D, TC, Args, CmdArgs, KernelOrKext);6826 RenderSCPOptions(TC, Args, CmdArgs);6827 RenderTrivialAutoVarInitOptions(D, TC, Args, CmdArgs);6828 6829 Args.AddLastArg(CmdArgs, options::OPT_fswift_async_fp_EQ);6830 6831 Args.addOptInFlag(CmdArgs, options::OPT_mstackrealign,6832 options::OPT_mno_stackrealign);6833 6834 if (const Arg *A = Args.getLastArg(options::OPT_mstack_alignment)) {6835 StringRef Value = A->getValue();6836 int64_t Alignment = 0;6837 if (Value.getAsInteger(10, Alignment) || Alignment < 0)6838 D.Diag(diag::err_drv_invalid_argument_to_option)6839 << Value << A->getOption().getName();6840 else if (Alignment & (Alignment - 1))6841 D.Diag(diag::err_drv_alignment_not_power_of_two)6842 << A->getAsString(Args) << Value;6843 else6844 CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + Value));6845 }6846 6847 if (Args.hasArg(options::OPT_mstack_probe_size)) {6848 StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);6849 6850 if (!Size.empty())6851 CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));6852 else6853 CmdArgs.push_back("-mstack-probe-size=0");6854 }6855 6856 Args.addOptOutFlag(CmdArgs, options::OPT_mstack_arg_probe,6857 options::OPT_mno_stack_arg_probe);6858 6859 if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,6860 options::OPT_mno_restrict_it)) {6861 if (A->getOption().matches(options::OPT_mrestrict_it)) {6862 CmdArgs.push_back("-mllvm");6863 CmdArgs.push_back("-arm-restrict-it");6864 } else {6865 CmdArgs.push_back("-mllvm");6866 CmdArgs.push_back("-arm-default-it");6867 }6868 }6869 6870 // Forward -cl options to -cc16871 RenderOpenCLOptions(Args, CmdArgs, InputType);6872 6873 // Forward hlsl options to -cc16874 RenderHLSLOptions(Args, CmdArgs, InputType);6875 6876 // Forward OpenACC options to -cc16877 RenderOpenACCOptions(D, Args, CmdArgs, InputType);6878 6879 if (IsHIP) {6880 if (Args.hasFlag(options::OPT_fhip_new_launch_api,6881 options::OPT_fno_hip_new_launch_api, true))6882 CmdArgs.push_back("-fhip-new-launch-api");6883 Args.addOptInFlag(CmdArgs, options::OPT_fgpu_allow_device_init,6884 options::OPT_fno_gpu_allow_device_init);6885 Args.AddLastArg(CmdArgs, options::OPT_hipstdpar);6886 Args.AddLastArg(CmdArgs, options::OPT_hipstdpar_interpose_alloc);6887 Args.addOptInFlag(CmdArgs, options::OPT_fhip_kernel_arg_name,6888 options::OPT_fno_hip_kernel_arg_name);6889 }6890 6891 if (IsCuda || IsHIP) {6892 if (IsRDCMode)6893 CmdArgs.push_back("-fgpu-rdc");6894 Args.addOptInFlag(CmdArgs, options::OPT_fgpu_defer_diag,6895 options::OPT_fno_gpu_defer_diag);6896 if (Args.hasFlag(options::OPT_fgpu_exclude_wrong_side_overloads,6897 options::OPT_fno_gpu_exclude_wrong_side_overloads,6898 false)) {6899 CmdArgs.push_back("-fgpu-exclude-wrong-side-overloads");6900 CmdArgs.push_back("-fgpu-defer-diag");6901 }6902 }6903 6904 // Forward --no-offloadlib to -cc1.6905 if (!Args.hasFlag(options::OPT_offloadlib, options::OPT_no_offloadlib, true))6906 CmdArgs.push_back("--no-offloadlib");6907 6908 if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {6909 CmdArgs.push_back(6910 Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));6911 6912 if (Arg *SA = Args.getLastArg(options::OPT_mcf_branch_label_scheme_EQ))6913 CmdArgs.push_back(Args.MakeArgString(Twine("-mcf-branch-label-scheme=") +6914 SA->getValue()));6915 } else if (Triple.isOSOpenBSD() && Triple.getArch() == llvm::Triple::x86_64) {6916 // Emit IBT endbr64 instructions by default6917 CmdArgs.push_back("-fcf-protection=branch");6918 // jump-table can generate indirect jumps, which are not permitted6919 CmdArgs.push_back("-fno-jump-tables");6920 }6921 6922 if (Arg *A = Args.getLastArg(options::OPT_mfunction_return_EQ))6923 CmdArgs.push_back(6924 Args.MakeArgString(Twine("-mfunction-return=") + A->getValue()));6925 6926 Args.AddLastArg(CmdArgs, options::OPT_mindirect_branch_cs_prefix);6927 6928 // Forward -f options with positive and negative forms; we translate these by6929 // hand. Do not propagate PGO options to the GPU-side compilations as the6930 // profile info is for the host-side compilation only.6931 if (!(IsCudaDevice || IsHIPDevice)) {6932 if (Arg *A = getLastProfileSampleUseArg(Args)) {6933 auto *PGOArg = Args.getLastArg(6934 options::OPT_fprofile_generate, options::OPT_fprofile_generate_EQ,6935 options::OPT_fcs_profile_generate,6936 options::OPT_fcs_profile_generate_EQ, options::OPT_fprofile_use,6937 options::OPT_fprofile_use_EQ);6938 if (PGOArg)6939 D.Diag(diag::err_drv_argument_not_allowed_with)6940 << "SampleUse with PGO options";6941 6942 StringRef fname = A->getValue();6943 if (!llvm::sys::fs::exists(fname))6944 D.Diag(diag::err_drv_no_such_file) << fname;6945 else6946 A->render(Args, CmdArgs);6947 }6948 Args.AddLastArg(CmdArgs, options::OPT_fprofile_remapping_file_EQ);6949 6950 if (Args.hasFlag(options::OPT_fpseudo_probe_for_profiling,6951 options::OPT_fno_pseudo_probe_for_profiling, false)) {6952 CmdArgs.push_back("-fpseudo-probe-for-profiling");6953 // Enforce -funique-internal-linkage-names if it's not explicitly turned6954 // off.6955 if (Args.hasFlag(options::OPT_funique_internal_linkage_names,6956 options::OPT_fno_unique_internal_linkage_names, true))6957 CmdArgs.push_back("-funique-internal-linkage-names");6958 }6959 }6960 RenderBuiltinOptions(TC, RawTriple, Args, CmdArgs);6961 6962 Args.addOptOutFlag(CmdArgs, options::OPT_fassume_sane_operator_new,6963 options::OPT_fno_assume_sane_operator_new);6964 6965 if (Args.hasFlag(options::OPT_fapinotes, options::OPT_fno_apinotes, false))6966 CmdArgs.push_back("-fapinotes");6967 if (Args.hasFlag(options::OPT_fapinotes_modules,6968 options::OPT_fno_apinotes_modules, false))6969 CmdArgs.push_back("-fapinotes-modules");6970 Args.AddLastArg(CmdArgs, options::OPT_fapinotes_swift_version);6971 6972 if (Args.hasFlag(options::OPT_fswift_version_independent_apinotes,6973 options::OPT_fno_swift_version_independent_apinotes, false))6974 CmdArgs.push_back("-fswift-version-independent-apinotes");6975 6976 // -fblocks=0 is default.6977 if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,6978 TC.IsBlocksDefault()) ||6979 (Args.hasArg(options::OPT_fgnu_runtime) &&6980 Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&6981 !Args.hasArg(options::OPT_fno_blocks))) {6982 CmdArgs.push_back("-fblocks");6983 6984 if (!Args.hasArg(options::OPT_fgnu_runtime) && !TC.hasBlocksRuntime())6985 CmdArgs.push_back("-fblocks-runtime-optional");6986 }6987 6988 // -fencode-extended-block-signature=1 is default.6989 if (TC.IsEncodeExtendedBlockSignatureDefault())6990 CmdArgs.push_back("-fencode-extended-block-signature");6991 6992 if (Args.hasFlag(options::OPT_fcoro_aligned_allocation,6993 options::OPT_fno_coro_aligned_allocation, false) &&6994 types::isCXX(InputType))6995 CmdArgs.push_back("-fcoro-aligned-allocation");6996 6997 Args.AddLastArg(CmdArgs, options::OPT_fdouble_square_bracket_attributes,6998 options::OPT_fno_double_square_bracket_attributes);6999 7000 Args.addOptOutFlag(CmdArgs, options::OPT_faccess_control,7001 options::OPT_fno_access_control);7002 Args.addOptOutFlag(CmdArgs, options::OPT_felide_constructors,7003 options::OPT_fno_elide_constructors);7004 7005 ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();7006 7007 if (KernelOrKext || (types::isCXX(InputType) &&7008 (RTTIMode == ToolChain::RM_Disabled)))7009 CmdArgs.push_back("-fno-rtti");7010 7011 // -fshort-enums=0 is default for all architectures except Hexagon and z/OS.7012 if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,7013 TC.getArch() == llvm::Triple::hexagon || Triple.isOSzOS()))7014 CmdArgs.push_back("-fshort-enums");7015 7016 RenderCharacterOptions(Args, AuxTriple ? *AuxTriple : RawTriple, CmdArgs);7017 7018 // -fuse-cxa-atexit is default.7019 if (!Args.hasFlag(7020 options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,7021 !RawTriple.isOSAIX() &&7022 (!RawTriple.isOSWindows() ||7023 RawTriple.isWindowsCygwinEnvironment()) &&7024 ((RawTriple.getVendor() != llvm::Triple::MipsTechnologies) ||7025 RawTriple.hasEnvironment())) ||7026 KernelOrKext)7027 CmdArgs.push_back("-fno-use-cxa-atexit");7028 7029 if (Args.hasFlag(options::OPT_fregister_global_dtors_with_atexit,7030 options::OPT_fno_register_global_dtors_with_atexit,7031 RawTriple.isOSDarwin() && !KernelOrKext))7032 CmdArgs.push_back("-fregister-global-dtors-with-atexit");7033 7034 Args.addOptInFlag(CmdArgs, options::OPT_fuse_line_directives,7035 options::OPT_fno_use_line_directives);7036 7037 // -fno-minimize-whitespace is default.7038 if (Args.hasFlag(options::OPT_fminimize_whitespace,7039 options::OPT_fno_minimize_whitespace, false)) {7040 types::ID InputType = Inputs[0].getType();7041 if (!isDerivedFromC(InputType))7042 D.Diag(diag::err_drv_opt_unsupported_input_type)7043 << "-fminimize-whitespace" << types::getTypeName(InputType);7044 CmdArgs.push_back("-fminimize-whitespace");7045 }7046 7047 // -fno-keep-system-includes is default.7048 if (Args.hasFlag(options::OPT_fkeep_system_includes,7049 options::OPT_fno_keep_system_includes, false)) {7050 types::ID InputType = Inputs[0].getType();7051 if (!isDerivedFromC(InputType))7052 D.Diag(diag::err_drv_opt_unsupported_input_type)7053 << "-fkeep-system-includes" << types::getTypeName(InputType);7054 CmdArgs.push_back("-fkeep-system-includes");7055 }7056 7057 // -fms-extensions=0 is default.7058 if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,7059 IsWindowsMSVC || IsUEFI))7060 CmdArgs.push_back("-fms-extensions");7061 7062 // -fms-compatibility=0 is default.7063 bool IsMSVCCompat = Args.hasFlag(7064 options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility,7065 (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions,7066 options::OPT_fno_ms_extensions, true)));7067 if (IsMSVCCompat) {7068 CmdArgs.push_back("-fms-compatibility");7069 if (!types::isCXX(Input.getType()) &&7070 Args.hasArg(options::OPT_fms_define_stdc))7071 CmdArgs.push_back("-fms-define-stdc");7072 }7073 7074 if (Triple.isWindowsMSVCEnvironment() && !D.IsCLMode() &&7075 Args.hasArg(options::OPT_fms_runtime_lib_EQ))7076 ProcessVSRuntimeLibrary(getToolChain(), Args, CmdArgs);7077 7078 // Handle -fgcc-version, if present.7079 VersionTuple GNUCVer;7080 if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) {7081 // Check that the version has 1 to 3 components and the minor and patch7082 // versions fit in two decimal digits.7083 StringRef Val = A->getValue();7084 Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable.7085 bool Invalid = GNUCVer.tryParse(Val);7086 unsigned Minor = GNUCVer.getMinor().value_or(0);7087 unsigned Patch = GNUCVer.getSubminor().value_or(0);7088 if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) {7089 D.Diag(diag::err_drv_invalid_value)7090 << A->getAsString(Args) << A->getValue();7091 }7092 } else if (!IsMSVCCompat) {7093 // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect.7094 GNUCVer = VersionTuple(4, 2, 1);7095 }7096 if (!GNUCVer.empty()) {7097 CmdArgs.push_back(7098 Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString()));7099 }7100 7101 VersionTuple MSVT = TC.computeMSVCVersion(&D, Args);7102 if (!MSVT.empty())7103 CmdArgs.push_back(7104 Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));7105 7106 bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;7107 if (ImplyVCPPCVer) {7108 StringRef LanguageStandard;7109 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {7110 Std = StdArg;7111 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())7112 .Case("c11", "-std=c11")7113 .Case("c17", "-std=c17")7114 // TODO: add c23 when MSVC supports it.7115 .Case("clatest", "-std=c23")7116 .Default("");7117 if (LanguageStandard.empty())7118 D.Diag(clang::diag::warn_drv_unused_argument)7119 << StdArg->getAsString(Args);7120 }7121 CmdArgs.push_back(LanguageStandard.data());7122 }7123 if (ImplyVCPPCXXVer) {7124 StringRef LanguageStandard;7125 if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {7126 Std = StdArg;7127 LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())7128 .Case("c++14", "-std=c++14")7129 .Case("c++17", "-std=c++17")7130 .Case("c++20", "-std=c++20")7131 // TODO add c++23 and c++26 when MSVC supports it.7132 .Case("c++23preview", "-std=c++23")7133 .Case("c++latest", "-std=c++26")7134 .Default("");7135 if (LanguageStandard.empty())7136 D.Diag(clang::diag::warn_drv_unused_argument)7137 << StdArg->getAsString(Args);7138 }7139 7140 if (LanguageStandard.empty()) {7141 if (IsMSVC2015Compatible)7142 LanguageStandard = "-std=c++14";7143 else7144 LanguageStandard = "-std=c++11";7145 }7146 7147 CmdArgs.push_back(LanguageStandard.data());7148 }7149 7150 Args.addOptInFlag(CmdArgs, options::OPT_fborland_extensions,7151 options::OPT_fno_borland_extensions);7152 7153 // -fno-declspec is default, except for PS4/PS5.7154 if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,7155 RawTriple.isPS()))7156 CmdArgs.push_back("-fdeclspec");7157 else if (Args.hasArg(options::OPT_fno_declspec))7158 CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.7159 7160 // -fthreadsafe-static is default, except for MSVC compatibility versions less7161 // than 19.7162 if (!Args.hasFlag(options::OPT_fthreadsafe_statics,7163 options::OPT_fno_threadsafe_statics,7164 !types::isOpenCL(InputType) &&7165 (!IsWindowsMSVC || IsMSVC2015Compatible)))7166 CmdArgs.push_back("-fno-threadsafe-statics");7167 7168 if (!Args.hasFlag(options::OPT_fms_tls_guards, options::OPT_fno_ms_tls_guards,7169 true))7170 CmdArgs.push_back("-fno-ms-tls-guards");7171 7172 // Add -fno-assumptions, if it was specified.7173 if (!Args.hasFlag(options::OPT_fassumptions, options::OPT_fno_assumptions,7174 true))7175 CmdArgs.push_back("-fno-assumptions");7176 7177 // -fgnu-keywords default varies depending on language; only pass if7178 // specified.7179 Args.AddLastArg(CmdArgs, options::OPT_fgnu_keywords,7180 options::OPT_fno_gnu_keywords);7181 7182 Args.addOptInFlag(CmdArgs, options::OPT_fgnu89_inline,7183 options::OPT_fno_gnu89_inline);7184 7185 const Arg *InlineArg = Args.getLastArg(options::OPT_finline_functions,7186 options::OPT_finline_hint_functions,7187 options::OPT_fno_inline_functions);7188 if (Arg *A = Args.getLastArg(options::OPT_finline, options::OPT_fno_inline)) {7189 if (A->getOption().matches(options::OPT_fno_inline))7190 A->render(Args, CmdArgs);7191 } else if (InlineArg) {7192 InlineArg->render(Args, CmdArgs);7193 }7194 7195 Args.AddLastArg(CmdArgs, options::OPT_finline_max_stacksize_EQ);7196 7197 // FIXME: Find a better way to determine whether we are in C++20.7198 bool HaveCxx20 =7199 Std &&7200 (Std->containsValue("c++2a") || Std->containsValue("gnu++2a") ||7201 Std->containsValue("c++20") || Std->containsValue("gnu++20") ||7202 Std->containsValue("c++2b") || Std->containsValue("gnu++2b") ||7203 Std->containsValue("c++23") || Std->containsValue("gnu++23") ||7204 Std->containsValue("c++2c") || Std->containsValue("gnu++2c") ||7205 Std->containsValue("c++26") || Std->containsValue("gnu++26") ||7206 Std->containsValue("c++latest") || Std->containsValue("gnu++latest"));7207 bool HaveModules =7208 RenderModulesOptions(C, D, Args, Input, Output, HaveCxx20, CmdArgs);7209 7210 // -fdelayed-template-parsing is default when targeting MSVC.7211 // Many old Windows SDK versions require this to parse.7212 //7213 // According to7214 // https://learn.microsoft.com/en-us/cpp/build/reference/permissive-standards-conformance?view=msvc-170,7215 // MSVC actually defaults to -fno-delayed-template-parsing (/Zc:twoPhase-7216 // with MSVC CLI) if using C++20. So we match the behavior with MSVC here to7217 // not enable -fdelayed-template-parsing by default after C++20.7218 //7219 // FIXME: Given -fdelayed-template-parsing is a source of bugs, we should be7220 // able to disable this by default at some point.7221 if (Args.hasFlag(options::OPT_fdelayed_template_parsing,7222 options::OPT_fno_delayed_template_parsing,7223 IsWindowsMSVC && !HaveCxx20)) {7224 if (HaveCxx20)7225 D.Diag(clang::diag::warn_drv_delayed_template_parsing_after_cxx20);7226 7227 CmdArgs.push_back("-fdelayed-template-parsing");7228 }7229 7230 if (Args.hasFlag(options::OPT_fpch_validate_input_files_content,7231 options::OPT_fno_pch_validate_input_files_content, false))7232 CmdArgs.push_back("-fvalidate-ast-input-files-content");7233 if (Args.hasFlag(options::OPT_fpch_instantiate_templates,7234 options::OPT_fno_pch_instantiate_templates, false))7235 CmdArgs.push_back("-fpch-instantiate-templates");7236 if (Args.hasFlag(options::OPT_fpch_codegen, options::OPT_fno_pch_codegen,7237 false))7238 CmdArgs.push_back("-fmodules-codegen");7239 if (Args.hasFlag(options::OPT_fpch_debuginfo, options::OPT_fno_pch_debuginfo,7240 false))7241 CmdArgs.push_back("-fmodules-debuginfo");7242 7243 ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, Inputs, CmdArgs, rewriteKind);7244 RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,7245 Input, CmdArgs);7246 7247 if (types::isObjC(Input.getType()) &&7248 Args.hasFlag(options::OPT_fobjc_encode_cxx_class_template_spec,7249 options::OPT_fno_objc_encode_cxx_class_template_spec,7250 !Runtime.isNeXTFamily()))7251 CmdArgs.push_back("-fobjc-encode-cxx-class-template-spec");7252 7253 if (Args.hasFlag(options::OPT_fapplication_extension,7254 options::OPT_fno_application_extension, false))7255 CmdArgs.push_back("-fapplication-extension");7256 7257 // Handle GCC-style exception args.7258 bool EH = false;7259 if (!C.getDriver().IsCLMode())7260 EH = addExceptionArgs(Args, InputType, TC, KernelOrKext, Runtime, CmdArgs);7261 7262 // Handle exception personalities7263 Arg *A = Args.getLastArg(7264 options::OPT_fsjlj_exceptions, options::OPT_fseh_exceptions,7265 options::OPT_fdwarf_exceptions, options::OPT_fwasm_exceptions);7266 if (A) {7267 const Option &Opt = A->getOption();7268 if (Opt.matches(options::OPT_fsjlj_exceptions))7269 CmdArgs.push_back("-exception-model=sjlj");7270 if (Opt.matches(options::OPT_fseh_exceptions))7271 CmdArgs.push_back("-exception-model=seh");7272 if (Opt.matches(options::OPT_fdwarf_exceptions))7273 CmdArgs.push_back("-exception-model=dwarf");7274 if (Opt.matches(options::OPT_fwasm_exceptions))7275 CmdArgs.push_back("-exception-model=wasm");7276 } else {7277 switch (TC.GetExceptionModel(Args)) {7278 default:7279 break;7280 case llvm::ExceptionHandling::DwarfCFI:7281 CmdArgs.push_back("-exception-model=dwarf");7282 break;7283 case llvm::ExceptionHandling::SjLj:7284 CmdArgs.push_back("-exception-model=sjlj");7285 break;7286 case llvm::ExceptionHandling::WinEH:7287 CmdArgs.push_back("-exception-model=seh");7288 break;7289 }7290 }7291 7292 // Unwind v2 (epilog) information for x64 Windows.7293 Args.AddLastArg(CmdArgs, options::OPT_winx64_eh_unwindv2);7294 7295 // C++ "sane" operator new.7296 Args.addOptOutFlag(CmdArgs, options::OPT_fassume_sane_operator_new,7297 options::OPT_fno_assume_sane_operator_new);7298 7299 // -fassume-unique-vtables is on by default.7300 Args.addOptOutFlag(CmdArgs, options::OPT_fassume_unique_vtables,7301 options::OPT_fno_assume_unique_vtables);7302 7303 // -fsized-deallocation is on by default in C++14 onwards and otherwise off7304 // by default.7305 Args.addLastArg(CmdArgs, options::OPT_fsized_deallocation,7306 options::OPT_fno_sized_deallocation);7307 7308 // -faligned-allocation is on by default in C++17 onwards and otherwise off7309 // by default.7310 if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,7311 options::OPT_fno_aligned_allocation,7312 options::OPT_faligned_new_EQ)) {7313 if (A->getOption().matches(options::OPT_fno_aligned_allocation))7314 CmdArgs.push_back("-fno-aligned-allocation");7315 else7316 CmdArgs.push_back("-faligned-allocation");7317 }7318 7319 // The default new alignment can be specified using a dedicated option or via7320 // a GCC-compatible option that also turns on aligned allocation.7321 if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,7322 options::OPT_faligned_new_EQ))7323 CmdArgs.push_back(7324 Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));7325 7326 // -fconstant-cfstrings is default, and may be subject to argument translation7327 // on Darwin.7328 if (!Args.hasFlag(options::OPT_fconstant_cfstrings,7329 options::OPT_fno_constant_cfstrings, true) ||7330 !Args.hasFlag(options::OPT_mconstant_cfstrings,7331 options::OPT_mno_constant_cfstrings, true))7332 CmdArgs.push_back("-fno-constant-cfstrings");7333 7334 Args.addOptInFlag(CmdArgs, options::OPT_fpascal_strings,7335 options::OPT_fno_pascal_strings);7336 7337 // Honor -fpack-struct= and -fpack-struct, if given. Note that7338 // -fno-pack-struct doesn't apply to -fpack-struct=.7339 if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {7340 std::string PackStructStr = "-fpack-struct=";7341 PackStructStr += A->getValue();7342 CmdArgs.push_back(Args.MakeArgString(PackStructStr));7343 } else if (Args.hasFlag(options::OPT_fpack_struct,7344 options::OPT_fno_pack_struct, false)) {7345 CmdArgs.push_back("-fpack-struct=1");7346 }7347 7348 // Handle -fmax-type-align=N and -fno-type-align7349 bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);7350 if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {7351 if (!SkipMaxTypeAlign) {7352 std::string MaxTypeAlignStr = "-fmax-type-align=";7353 MaxTypeAlignStr += A->getValue();7354 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));7355 }7356 } else if (RawTriple.isOSDarwin()) {7357 if (!SkipMaxTypeAlign) {7358 std::string MaxTypeAlignStr = "-fmax-type-align=16";7359 CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));7360 }7361 }7362 7363 if (!Args.hasFlag(options::OPT_Qy, options::OPT_Qn, true))7364 CmdArgs.push_back("-Qn");7365 7366 // -fno-common is the default, set -fcommon only when that flag is set.7367 Args.addOptInFlag(CmdArgs, options::OPT_fcommon, options::OPT_fno_common);7368 7369 // -fsigned-bitfields is default, and clang doesn't yet support7370 // -funsigned-bitfields.7371 if (!Args.hasFlag(options::OPT_fsigned_bitfields,7372 options::OPT_funsigned_bitfields, true))7373 D.Diag(diag::warn_drv_clang_unsupported)7374 << Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);7375 7376 // -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.7377 if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope, true))7378 D.Diag(diag::err_drv_clang_unsupported)7379 << Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);7380 7381 // -finput_charset=UTF-8 is default. Reject others7382 if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {7383 StringRef value = inputCharset->getValue();7384 if (!value.equals_insensitive("utf-8"))7385 D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)7386 << value;7387 }7388 7389 // -fexec_charset=UTF-8 is default. Reject others7390 if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {7391 StringRef value = execCharset->getValue();7392 if (!value.equals_insensitive("utf-8"))7393 D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)7394 << value;7395 }7396 7397 RenderDiagnosticsOptions(D, Args, CmdArgs);7398 7399 Args.addOptInFlag(CmdArgs, options::OPT_fasm_blocks,7400 options::OPT_fno_asm_blocks);7401 7402 Args.addOptOutFlag(CmdArgs, options::OPT_fgnu_inline_asm,7403 options::OPT_fno_gnu_inline_asm);7404 7405 handleVectorizeLoopsArgs(Args, CmdArgs);7406 handleVectorizeSLPArgs(Args, CmdArgs);7407 7408 StringRef VecWidth = parseMPreferVectorWidthOption(D.getDiags(), Args);7409 if (!VecWidth.empty())7410 CmdArgs.push_back(Args.MakeArgString("-mprefer-vector-width=" + VecWidth));7411 7412 Args.AddLastArg(CmdArgs, options::OPT_fshow_overloads_EQ);7413 Args.AddLastArg(CmdArgs,7414 options::OPT_fsanitize_undefined_strip_path_components_EQ);7415 7416 // -fdollars-in-identifiers default varies depending on platform and7417 // language; only pass if specified.7418 if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,7419 options::OPT_fno_dollars_in_identifiers)) {7420 if (A->getOption().matches(options::OPT_fdollars_in_identifiers))7421 CmdArgs.push_back("-fdollars-in-identifiers");7422 else7423 CmdArgs.push_back("-fno-dollars-in-identifiers");7424 }7425 7426 Args.addOptInFlag(CmdArgs, options::OPT_fapple_pragma_pack,7427 options::OPT_fno_apple_pragma_pack);7428 7429 // Remarks can be enabled with any of the `-f.*optimization-record.*` flags.7430 if (willEmitRemarks(Args) && checkRemarksOptions(D, Args, Triple))7431 renderRemarksOptions(Args, CmdArgs, Triple, Input, Output, JA);7432 7433 bool RewriteImports = Args.hasFlag(options::OPT_frewrite_imports,7434 options::OPT_fno_rewrite_imports, false);7435 if (RewriteImports)7436 CmdArgs.push_back("-frewrite-imports");7437 7438 Args.addOptInFlag(CmdArgs, options::OPT_fdirectives_only,7439 options::OPT_fno_directives_only);7440 7441 // Enable rewrite includes if the user's asked for it or if we're generating7442 // diagnostics.7443 // TODO: Once -module-dependency-dir works with -frewrite-includes it'd be7444 // nice to enable this when doing a crashdump for modules as well.7445 if (Args.hasFlag(options::OPT_frewrite_includes,7446 options::OPT_fno_rewrite_includes, false) ||7447 (C.isForDiagnostics() && !HaveModules))7448 CmdArgs.push_back("-frewrite-includes");7449 7450 if (Args.hasFlag(options::OPT_fzos_extensions,7451 options::OPT_fno_zos_extensions, false))7452 CmdArgs.push_back("-fzos-extensions");7453 else if (Args.hasArg(options::OPT_fno_zos_extensions))7454 CmdArgs.push_back("-fno-zos-extensions");7455 7456 // Only allow -traditional or -traditional-cpp outside in preprocessing modes.7457 if (Arg *A = Args.getLastArg(options::OPT_traditional,7458 options::OPT_traditional_cpp)) {7459 if (isa<PreprocessJobAction>(JA))7460 CmdArgs.push_back("-traditional-cpp");7461 else7462 D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);7463 }7464 7465 Args.AddLastArg(CmdArgs, options::OPT_dM);7466 Args.AddLastArg(CmdArgs, options::OPT_dD);7467 Args.AddLastArg(CmdArgs, options::OPT_dI);7468 7469 Args.AddLastArg(CmdArgs, options::OPT_fmax_tokens_EQ);7470 7471 // Handle serialized diagnostics.7472 if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {7473 CmdArgs.push_back("-serialize-diagnostic-file");7474 CmdArgs.push_back(Args.MakeArgString(A->getValue()));7475 }7476 7477 if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))7478 CmdArgs.push_back("-fretain-comments-from-system-headers");7479 7480 if (Arg *A = Args.getLastArg(options::OPT_fextend_variable_liveness_EQ)) {7481 A->render(Args, CmdArgs);7482 } else if (Arg *A = Args.getLastArg(options::OPT_O_Group);7483 A && A->containsValue("g")) {7484 // Set -fextend-variable-liveness=all by default at -Og.7485 CmdArgs.push_back("-fextend-variable-liveness=all");7486 }7487 7488 // Forward -fcomment-block-commands to -cc1.7489 Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);7490 // Forward -fparse-all-comments to -cc1.7491 Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);7492 7493 // Turn -fplugin=name.so into -load name.so7494 for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {7495 CmdArgs.push_back("-load");7496 CmdArgs.push_back(A->getValue());7497 A->claim();7498 }7499 7500 // Turn -fplugin-arg-pluginname-key=value into7501 // -plugin-arg-pluginname key=value7502 // GCC has an actual plugin_argument struct with key/value pairs that it7503 // passes to its plugins, but we don't, so just pass it on as-is.7504 //7505 // The syntax for -fplugin-arg- is ambiguous if both plugin name and7506 // argument key are allowed to contain dashes. GCC therefore only7507 // allows dashes in the key. We do the same.7508 for (const Arg *A : Args.filtered(options::OPT_fplugin_arg)) {7509 auto ArgValue = StringRef(A->getValue());7510 auto FirstDashIndex = ArgValue.find('-');7511 StringRef PluginName = ArgValue.substr(0, FirstDashIndex);7512 StringRef Arg = ArgValue.substr(FirstDashIndex + 1);7513 7514 A->claim();7515 if (FirstDashIndex == StringRef::npos || Arg.empty()) {7516 if (PluginName.empty()) {7517 D.Diag(diag::warn_drv_missing_plugin_name) << A->getAsString(Args);7518 } else {7519 D.Diag(diag::warn_drv_missing_plugin_arg)7520 << PluginName << A->getAsString(Args);7521 }7522 continue;7523 }7524 7525 CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-arg-") + PluginName));7526 CmdArgs.push_back(Args.MakeArgString(Arg));7527 }7528 7529 // Forward -fpass-plugin=name.so to -cc1.7530 for (const Arg *A : Args.filtered(options::OPT_fpass_plugin_EQ)) {7531 CmdArgs.push_back(7532 Args.MakeArgString(Twine("-fpass-plugin=") + A->getValue()));7533 A->claim();7534 }7535 7536 // Forward --vfsoverlay to -cc1.7537 for (const Arg *A : Args.filtered(options::OPT_vfsoverlay)) {7538 CmdArgs.push_back("--vfsoverlay");7539 CmdArgs.push_back(A->getValue());7540 A->claim();7541 }7542 7543 Args.addOptInFlag(CmdArgs, options::OPT_fsafe_buffer_usage_suggestions,7544 options::OPT_fno_safe_buffer_usage_suggestions);7545 7546 Args.addOptInFlag(CmdArgs, options::OPT_fexperimental_late_parse_attributes,7547 options::OPT_fno_experimental_late_parse_attributes);7548 7549 if (Args.hasFlag(options::OPT_funique_source_file_names,7550 options::OPT_fno_unique_source_file_names, false)) {7551 if (Arg *A = Args.getLastArg(options::OPT_unique_source_file_identifier_EQ))7552 A->render(Args, CmdArgs);7553 else7554 CmdArgs.push_back(Args.MakeArgString(7555 Twine("-funique-source-file-identifier=") + Input.getBaseInput()));7556 }7557 7558 // Setup statistics file output.7559 SmallString<128> StatsFile = getStatsFileName(Args, Output, Input, D);7560 if (!StatsFile.empty()) {7561 CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") + StatsFile));7562 if (D.CCPrintInternalStats)7563 CmdArgs.push_back("-stats-file-append");7564 }7565 7566 // Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option7567 // parser.7568 for (auto Arg : Args.filtered(options::OPT_Xclang)) {7569 Arg->claim();7570 // -finclude-default-header flag is for preprocessor,7571 // do not pass it to other cc1 commands when save-temps is enabled7572 if (C.getDriver().isSaveTempsEnabled() &&7573 !isa<PreprocessJobAction>(JA)) {7574 if (StringRef(Arg->getValue()) == "-finclude-default-header")7575 continue;7576 }7577 CmdArgs.push_back(Arg->getValue());7578 }7579 for (const Arg *A : Args.filtered(options::OPT_mllvm)) {7580 A->claim();7581 7582 // We translate this by hand to the -cc1 argument, since nightly test uses7583 // it and developers have been trained to spell it with -mllvm. Both7584 // spellings are now deprecated and should be removed.7585 if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {7586 CmdArgs.push_back("-disable-llvm-optzns");7587 } else {7588 A->render(Args, CmdArgs);7589 }7590 }7591 7592 // This needs to run after -Xclang argument forwarding to pick up the target7593 // features enabled through -Xclang -target-feature flags.7594 SanitizeArgs.addArgs(TC, Args, CmdArgs, InputType);7595 7596 Args.AddLastArg(CmdArgs, options::OPT_falloc_token_max_EQ);7597 7598#if CLANG_ENABLE_CIR7599 // Forward -mmlir arguments to to the MLIR option parser.7600 for (const Arg *A : Args.filtered(options::OPT_mmlir)) {7601 A->claim();7602 A->render(Args, CmdArgs);7603 }7604#endif // CLANG_ENABLE_CIR7605 7606 // With -save-temps, we want to save the unoptimized bitcode output from the7607 // CompileJobAction, use -disable-llvm-passes to get pristine IR generated7608 // by the frontend.7609 // When -fembed-bitcode is enabled, optimized bitcode is emitted because it7610 // has slightly different breakdown between stages.7611 // FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of7612 // pristine IR generated by the frontend. Ideally, a new compile action should7613 // be added so both IR can be captured.7614 if ((C.getDriver().isSaveTempsEnabled() ||7615 JA.isHostOffloading(Action::OFK_OpenMP)) &&7616 !(C.getDriver().embedBitcodeInObject() && !IsUsingLTO) &&7617 isa<CompileJobAction>(JA))7618 CmdArgs.push_back("-disable-llvm-passes");7619 7620 Args.AddAllArgs(CmdArgs, options::OPT_undef);7621 7622 const char *Exec = D.getClangProgramPath();7623 7624 // Optionally embed the -cc1 level arguments into the debug info or a7625 // section, for build analysis.7626 // Also record command line arguments into the debug info if7627 // -grecord-gcc-switches options is set on.7628 // By default, -gno-record-gcc-switches is set on and no recording.7629 auto GRecordSwitches = false;7630 auto FRecordSwitches = false;7631 if (shouldRecordCommandLine(TC, Args, FRecordSwitches, GRecordSwitches)) {7632 auto FlagsArgString = renderEscapedCommandLine(TC, Args);7633 if (TC.UseDwarfDebugFlags() || GRecordSwitches) {7634 CmdArgs.push_back("-dwarf-debug-flags");7635 CmdArgs.push_back(FlagsArgString);7636 }7637 if (FRecordSwitches) {7638 CmdArgs.push_back("-record-command-line");7639 CmdArgs.push_back(FlagsArgString);7640 }7641 }7642 7643 // Host-side offloading compilation receives all device-side outputs. Include7644 // them in the host compilation depending on the target. If the host inputs7645 // are not empty we use the new-driver scheme, otherwise use the old scheme.7646 if ((IsCuda || IsHIP) && CudaDeviceInput) {7647 CmdArgs.push_back("-fcuda-include-gpubinary");7648 CmdArgs.push_back(CudaDeviceInput->getFilename());7649 } else if (!HostOffloadingInputs.empty()) {7650 if ((IsCuda || IsHIP) && !IsRDCMode) {7651 assert(HostOffloadingInputs.size() == 1 && "Only one input expected");7652 CmdArgs.push_back("-fcuda-include-gpubinary");7653 CmdArgs.push_back(HostOffloadingInputs.front().getFilename());7654 } else {7655 for (const InputInfo Input : HostOffloadingInputs)7656 CmdArgs.push_back(Args.MakeArgString("-fembed-offload-object=" +7657 TC.getInputFilename(Input)));7658 }7659 }7660 7661 if (IsCuda) {7662 if (Args.hasFlag(options::OPT_fcuda_short_ptr,7663 options::OPT_fno_cuda_short_ptr, false))7664 CmdArgs.push_back("-fcuda-short-ptr");7665 }7666 7667 if (IsCuda || IsHIP) {7668 // Determine the original source input.7669 const Action *SourceAction = &JA;7670 while (SourceAction->getKind() != Action::InputClass) {7671 assert(!SourceAction->getInputs().empty() && "unexpected root action!");7672 SourceAction = SourceAction->getInputs()[0];7673 }7674 auto CUID = cast<InputAction>(SourceAction)->getId();7675 if (!CUID.empty())7676 CmdArgs.push_back(Args.MakeArgString(Twine("-cuid=") + Twine(CUID)));7677 7678 // -ffast-math turns on -fgpu-approx-transcendentals implicitly, but will7679 // be overriden by -fno-gpu-approx-transcendentals.7680 bool UseApproxTranscendentals = Args.hasFlag(7681 options::OPT_ffast_math, options::OPT_fno_fast_math, false);7682 if (Args.hasFlag(options::OPT_fgpu_approx_transcendentals,7683 options::OPT_fno_gpu_approx_transcendentals,7684 UseApproxTranscendentals))7685 CmdArgs.push_back("-fgpu-approx-transcendentals");7686 } else {7687 Args.claimAllArgs(options::OPT_fgpu_approx_transcendentals,7688 options::OPT_fno_gpu_approx_transcendentals);7689 }7690 7691 if (IsHIP) {7692 CmdArgs.push_back("-fcuda-allow-variadic-functions");7693 Args.AddLastArg(CmdArgs, options::OPT_fgpu_default_stream_EQ);7694 }7695 7696 Args.AddAllArgs(CmdArgs,7697 options::OPT_fsanitize_undefined_ignore_overflow_pattern_EQ);7698 7699 Args.AddLastArg(CmdArgs, options::OPT_foffload_uniform_block,7700 options::OPT_fno_offload_uniform_block);7701 7702 Args.AddLastArg(CmdArgs, options::OPT_foffload_implicit_host_device_templates,7703 options::OPT_fno_offload_implicit_host_device_templates);7704 7705 if (IsCudaDevice || IsHIPDevice) {7706 StringRef InlineThresh =7707 Args.getLastArgValue(options::OPT_fgpu_inline_threshold_EQ);7708 if (!InlineThresh.empty()) {7709 std::string ArgStr =7710 std::string("-inline-threshold=") + InlineThresh.str();7711 CmdArgs.append({"-mllvm", Args.MakeArgStringRef(ArgStr)});7712 }7713 }7714 7715 if (IsHIPDevice)7716 Args.addOptOutFlag(CmdArgs,7717 options::OPT_fhip_fp32_correctly_rounded_divide_sqrt,7718 options::OPT_fno_hip_fp32_correctly_rounded_divide_sqrt);7719 7720 // OpenMP offloading device jobs take the argument -fopenmp-host-ir-file-path7721 // to specify the result of the compile phase on the host, so the meaningful7722 // device declarations can be identified. Also, -fopenmp-is-target-device is7723 // passed along to tell the frontend that it is generating code for a device,7724 // so that only the relevant declarations are emitted.7725 if (IsOpenMPDevice) {7726 CmdArgs.push_back("-fopenmp-is-target-device");7727 // If we are offloading cuda/hip via llvm, it's also "cuda device code".7728 if (Args.hasArg(options::OPT_foffload_via_llvm))7729 CmdArgs.push_back("-fcuda-is-device");7730 7731 if (OpenMPDeviceInput) {7732 CmdArgs.push_back("-fopenmp-host-ir-file-path");7733 CmdArgs.push_back(Args.MakeArgString(OpenMPDeviceInput->getFilename()));7734 }7735 }7736 7737 if (Triple.isAMDGPU()) {7738 handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs);7739 7740 Args.addOptInFlag(CmdArgs, options::OPT_munsafe_fp_atomics,7741 options::OPT_mno_unsafe_fp_atomics);7742 Args.addOptOutFlag(CmdArgs, options::OPT_mamdgpu_ieee,7743 options::OPT_mno_amdgpu_ieee);7744 }7745 7746 addOpenMPHostOffloadingArgs(C, JA, Args, CmdArgs);7747 7748 bool VirtualFunctionElimination =7749 Args.hasFlag(options::OPT_fvirtual_function_elimination,7750 options::OPT_fno_virtual_function_elimination, false);7751 if (VirtualFunctionElimination) {7752 // VFE requires full LTO (currently, this might be relaxed to allow ThinLTO7753 // in the future).7754 if (LTOMode != LTOK_Full)7755 D.Diag(diag::err_drv_argument_only_allowed_with)7756 << "-fvirtual-function-elimination"7757 << "-flto=full";7758 7759 CmdArgs.push_back("-fvirtual-function-elimination");7760 }7761 7762 // VFE requires whole-program-vtables, and enables it by default.7763 bool WholeProgramVTables = Args.hasFlag(7764 options::OPT_fwhole_program_vtables,7765 options::OPT_fno_whole_program_vtables, VirtualFunctionElimination);7766 if (VirtualFunctionElimination && !WholeProgramVTables) {7767 D.Diag(diag::err_drv_argument_not_allowed_with)7768 << "-fno-whole-program-vtables"7769 << "-fvirtual-function-elimination";7770 }7771 7772 if (WholeProgramVTables) {7773 // PS4 uses the legacy LTO API, which does not support this feature in7774 // ThinLTO mode.7775 bool IsPS4 = getToolChain().getTriple().isPS4();7776 7777 // Check if we passed LTO options but they were suppressed because this is a7778 // device offloading action, or we passed device offload LTO options which7779 // were suppressed because this is not the device offload action.7780 // Check if we are using PS4 in regular LTO mode.7781 // Otherwise, issue an error.7782 7783 auto OtherLTOMode =7784 IsDeviceOffloadAction ? D.getLTOMode() : D.getOffloadLTOMode();7785 auto OtherIsUsingLTO = OtherLTOMode != LTOK_None;7786 7787 if ((!IsUsingLTO && !OtherIsUsingLTO) ||7788 (IsPS4 && !UnifiedLTO && (D.getLTOMode() != LTOK_Full)))7789 D.Diag(diag::err_drv_argument_only_allowed_with)7790 << "-fwhole-program-vtables"7791 << ((IsPS4 && !UnifiedLTO) ? "-flto=full" : "-flto");7792 7793 // Propagate -fwhole-program-vtables if this is an LTO compile.7794 if (IsUsingLTO)7795 CmdArgs.push_back("-fwhole-program-vtables");7796 }7797 7798 bool DefaultsSplitLTOUnit =7799 ((WholeProgramVTables || SanitizeArgs.needsLTO()) &&7800 (LTOMode == LTOK_Full || TC.canSplitThinLTOUnit())) ||7801 (!Triple.isPS4() && UnifiedLTO);7802 bool SplitLTOUnit =7803 Args.hasFlag(options::OPT_fsplit_lto_unit,7804 options::OPT_fno_split_lto_unit, DefaultsSplitLTOUnit);7805 if (SanitizeArgs.needsLTO() && !SplitLTOUnit)7806 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fno-split-lto-unit"7807 << "-fsanitize=cfi";7808 if (SplitLTOUnit)7809 CmdArgs.push_back("-fsplit-lto-unit");7810 7811 if (Arg *A = Args.getLastArg(options::OPT_ffat_lto_objects,7812 options::OPT_fno_fat_lto_objects)) {7813 if (IsUsingLTO && A->getOption().matches(options::OPT_ffat_lto_objects)) {7814 assert(LTOMode == LTOK_Full || LTOMode == LTOK_Thin);7815 if (!Triple.isOSBinFormatELF()) {7816 D.Diag(diag::err_drv_unsupported_opt_for_target)7817 << A->getAsString(Args) << TC.getTripleString();7818 }7819 CmdArgs.push_back(Args.MakeArgString(7820 Twine("-flto=") + (LTOMode == LTOK_Thin ? "thin" : "full")));7821 CmdArgs.push_back("-flto-unit");7822 CmdArgs.push_back("-ffat-lto-objects");7823 A->render(Args, CmdArgs);7824 }7825 }7826 7827 if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,7828 options::OPT_fno_global_isel)) {7829 CmdArgs.push_back("-mllvm");7830 if (A->getOption().matches(options::OPT_fglobal_isel)) {7831 CmdArgs.push_back("-global-isel=1");7832 7833 // GISel is on by default on AArch64 -O0, so don't bother adding7834 // the fallback remarks for it. Other combinations will add a warning of7835 // some kind.7836 bool IsArchSupported = Triple.getArch() == llvm::Triple::aarch64;7837 bool IsOptLevelSupported = false;7838 7839 Arg *A = Args.getLastArg(options::OPT_O_Group);7840 if (Triple.getArch() == llvm::Triple::aarch64) {7841 if (!A || A->getOption().matches(options::OPT_O0))7842 IsOptLevelSupported = true;7843 }7844 if (!IsArchSupported || !IsOptLevelSupported) {7845 CmdArgs.push_back("-mllvm");7846 CmdArgs.push_back("-global-isel-abort=2");7847 7848 if (!IsArchSupported)7849 D.Diag(diag::warn_drv_global_isel_incomplete) << Triple.getArchName();7850 else7851 D.Diag(diag::warn_drv_global_isel_incomplete_opt);7852 }7853 } else {7854 CmdArgs.push_back("-global-isel=0");7855 }7856 }7857 7858 if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,7859 options::OPT_fno_force_enable_int128)) {7860 if (A->getOption().matches(options::OPT_fforce_enable_int128))7861 CmdArgs.push_back("-fforce-enable-int128");7862 }7863 7864 Args.addOptInFlag(CmdArgs, options::OPT_fkeep_static_consts,7865 options::OPT_fno_keep_static_consts);7866 Args.addOptInFlag(CmdArgs, options::OPT_fkeep_persistent_storage_variables,7867 options::OPT_fno_keep_persistent_storage_variables);7868 Args.addOptInFlag(CmdArgs, options::OPT_fcomplete_member_pointers,7869 options::OPT_fno_complete_member_pointers);7870 if (Arg *A = Args.getLastArg(options::OPT_cxx_static_destructors_EQ))7871 A->render(Args, CmdArgs);7872 7873 addMachineOutlinerArgs(D, Args, CmdArgs, Triple, /*IsLTO=*/false);7874 7875 addOutlineAtomicsArgs(D, getToolChain(), Args, CmdArgs, Triple);7876 7877 if (Triple.isAArch64() &&7878 (Args.hasArg(options::OPT_mno_fmv) ||7879 (Triple.isAndroid() && Triple.isAndroidVersionLT(23)) ||7880 getToolChain().GetRuntimeLibType(Args) != ToolChain::RLT_CompilerRT)) {7881 // Disable Function Multiversioning on AArch64 target.7882 CmdArgs.push_back("-target-feature");7883 CmdArgs.push_back("-fmv");7884 }7885 7886 if (Args.hasFlag(options::OPT_faddrsig, options::OPT_fno_addrsig,7887 (TC.getTriple().isOSBinFormatELF() ||7888 TC.getTriple().isOSBinFormatCOFF()) &&7889 !TC.getTriple().isPS4() && !TC.getTriple().isVE() &&7890 !TC.getTriple().isOSNetBSD() &&7891 !Distro(D.getVFS(), TC.getTriple()).IsGentoo() &&7892 !TC.getTriple().isAndroid() && TC.useIntegratedAs()))7893 CmdArgs.push_back("-faddrsig");7894 7895 const bool HasDefaultDwarf2CFIASM =7896 (Triple.isOSBinFormatELF() || Triple.isOSBinFormatMachO()) &&7897 (EH || UnwindTables || AsyncUnwindTables ||7898 DebugInfoKind != llvm::codegenoptions::NoDebugInfo);7899 if (Args.hasFlag(options::OPT_fdwarf2_cfi_asm,7900 options::OPT_fno_dwarf2_cfi_asm, HasDefaultDwarf2CFIASM))7901 CmdArgs.push_back("-fdwarf2-cfi-asm");7902 7903 if (Arg *A = Args.getLastArg(options::OPT_fsymbol_partition_EQ)) {7904 std::string Str = A->getAsString(Args);7905 if (!TC.getTriple().isOSBinFormatELF())7906 D.Diag(diag::err_drv_unsupported_opt_for_target)7907 << Str << TC.getTripleString();7908 CmdArgs.push_back(Args.MakeArgString(Str));7909 }7910 7911 // Add the "-o out -x type src.c" flags last. This is done primarily to make7912 // the -cc1 command easier to edit when reproducing compiler crashes.7913 if (Output.getType() == types::TY_Dependencies) {7914 // Handled with other dependency code.7915 } else if (Output.isFilename()) {7916 if (Output.getType() == clang::driver::types::TY_IFS_CPP ||7917 Output.getType() == clang::driver::types::TY_IFS) {7918 SmallString<128> OutputFilename(Output.getFilename());7919 llvm::sys::path::replace_extension(OutputFilename, "ifs");7920 CmdArgs.push_back("-o");7921 CmdArgs.push_back(Args.MakeArgString(OutputFilename));7922 } else {7923 CmdArgs.push_back("-o");7924 CmdArgs.push_back(Output.getFilename());7925 }7926 } else {7927 assert(Output.isNothing() && "Invalid output.");7928 }7929 7930 addDashXForInput(Args, Input, CmdArgs);7931 7932 ArrayRef<InputInfo> FrontendInputs = Input;7933 if (IsExtractAPI)7934 FrontendInputs = ExtractAPIInputs;7935 else if (Input.isNothing())7936 FrontendInputs = {};7937 7938 for (const InputInfo &Input : FrontendInputs) {7939 if (Input.isFilename())7940 CmdArgs.push_back(Input.getFilename());7941 else7942 Input.getInputArg().renderAsInput(Args, CmdArgs);7943 }7944 7945 if (D.CC1Main && !D.CCGenDiagnostics) {7946 // Invoke the CC1 directly in this process7947 C.addCommand(std::make_unique<CC1Command>(7948 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,7949 Output, D.getPrependArg()));7950 } else {7951 C.addCommand(std::make_unique<Command>(7952 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,7953 Output, D.getPrependArg()));7954 }7955 7956 // Make the compile command echo its inputs for /showFilenames.7957 if (Output.getType() == types::TY_Object &&7958 Args.hasFlag(options::OPT__SLASH_showFilenames,7959 options::OPT__SLASH_showFilenames_, false)) {7960 C.getJobs().getJobs().back()->PrintInputFilenames = true;7961 }7962 7963 if (Arg *A = Args.getLastArg(options::OPT_pg))7964 if (FPKeepKind == CodeGenOptions::FramePointerKind::None &&7965 !Args.hasArg(options::OPT_mfentry))7966 D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"7967 << A->getAsString(Args);7968 7969 // Claim some arguments which clang supports automatically.7970 7971 // -fpch-preprocess is used with gcc to add a special marker in the output to7972 // include the PCH file.7973 Args.ClaimAllArgs(options::OPT_fpch_preprocess);7974 7975 // Claim some arguments which clang doesn't support, but we don't7976 // care to warn the user about.7977 Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);7978 Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);7979 7980 // Disable warnings for clang -E -emit-llvm foo.c7981 Args.ClaimAllArgs(options::OPT_emit_llvm);7982}7983 7984Clang::Clang(const ToolChain &TC, bool HasIntegratedBackend)7985 // CAUTION! The first constructor argument ("clang") is not arbitrary,7986 // as it is for other tools. Some operations on a Tool actually test7987 // whether that tool is Clang based on the Tool's Name as a string.7988 : Tool("clang", "clang frontend", TC), HasBackend(HasIntegratedBackend) {}7989 7990Clang::~Clang() {}7991 7992/// Add options related to the Objective-C runtime/ABI.7993///7994/// Returns true if the runtime is non-fragile.7995ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,7996 const InputInfoList &inputs,7997 ArgStringList &cmdArgs,7998 RewriteKind rewriteKind) const {7999 // Look for the controlling runtime option.8000 Arg *runtimeArg =8001 args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,8002 options::OPT_fobjc_runtime_EQ);8003 8004 // Just forward -fobjc-runtime= to the frontend. This supercedes8005 // options about fragility.8006 if (runtimeArg &&8007 runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {8008 ObjCRuntime runtime;8009 StringRef value = runtimeArg->getValue();8010 if (runtime.tryParse(value)) {8011 getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)8012 << value;8013 }8014 if ((runtime.getKind() == ObjCRuntime::GNUstep) &&8015 (runtime.getVersion() >= VersionTuple(2, 0)))8016 if (!getToolChain().getTriple().isOSBinFormatELF() &&8017 !getToolChain().getTriple().isOSBinFormatCOFF()) {8018 getToolChain().getDriver().Diag(8019 diag::err_drv_gnustep_objc_runtime_incompatible_binary)8020 << runtime.getVersion().getMajor();8021 }8022 8023 runtimeArg->render(args, cmdArgs);8024 return runtime;8025 }8026 8027 // Otherwise, we'll need the ABI "version". Version numbers are8028 // slightly confusing for historical reasons:8029 // 1 - Traditional "fragile" ABI8030 // 2 - Non-fragile ABI, version 18031 // 3 - Non-fragile ABI, version 28032 unsigned objcABIVersion = 1;8033 // If -fobjc-abi-version= is present, use that to set the version.8034 if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {8035 StringRef value = abiArg->getValue();8036 if (value == "1")8037 objcABIVersion = 1;8038 else if (value == "2")8039 objcABIVersion = 2;8040 else if (value == "3")8041 objcABIVersion = 3;8042 else8043 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;8044 } else {8045 // Otherwise, determine if we are using the non-fragile ABI.8046 bool nonFragileABIIsDefault =8047 (rewriteKind == RK_NonFragile ||8048 (rewriteKind == RK_None &&8049 getToolChain().IsObjCNonFragileABIDefault()));8050 if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,8051 options::OPT_fno_objc_nonfragile_abi,8052 nonFragileABIIsDefault)) {8053// Determine the non-fragile ABI version to use.8054#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO8055 unsigned nonFragileABIVersion = 1;8056#else8057 unsigned nonFragileABIVersion = 2;8058#endif8059 8060 if (Arg *abiArg =8061 args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {8062 StringRef value = abiArg->getValue();8063 if (value == "1")8064 nonFragileABIVersion = 1;8065 else if (value == "2")8066 nonFragileABIVersion = 2;8067 else8068 getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)8069 << value;8070 }8071 8072 objcABIVersion = 1 + nonFragileABIVersion;8073 } else {8074 objcABIVersion = 1;8075 }8076 }8077 8078 // We don't actually care about the ABI version other than whether8079 // it's non-fragile.8080 bool isNonFragile = objcABIVersion != 1;8081 8082 // If we have no runtime argument, ask the toolchain for its default runtime.8083 // However, the rewriter only really supports the Mac runtime, so assume that.8084 ObjCRuntime runtime;8085 if (!runtimeArg) {8086 switch (rewriteKind) {8087 case RK_None:8088 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);8089 break;8090 case RK_Fragile:8091 runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());8092 break;8093 case RK_NonFragile:8094 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());8095 break;8096 }8097 8098 // -fnext-runtime8099 } else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {8100 // On Darwin, make this use the default behavior for the toolchain.8101 if (getToolChain().getTriple().isOSDarwin()) {8102 runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);8103 8104 // Otherwise, build for a generic macosx port.8105 } else {8106 runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());8107 }8108 8109 // -fgnu-runtime8110 } else {8111 assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));8112 // Legacy behaviour is to target the gnustep runtime if we are in8113 // non-fragile mode or the GCC runtime in fragile mode.8114 if (isNonFragile)8115 runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(2, 0));8116 else8117 runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());8118 }8119 8120 if (llvm::any_of(inputs, [](const InputInfo &input) {8121 return types::isObjC(input.getType());8122 }))8123 cmdArgs.push_back(8124 args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));8125 return runtime;8126}8127 8128static bool maybeConsumeDash(const std::string &EH, size_t &I) {8129 bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');8130 I += HaveDash;8131 return !HaveDash;8132}8133 8134namespace {8135struct EHFlags {8136 bool Synch = false;8137 bool Asynch = false;8138 bool NoUnwindC = false;8139};8140} // end anonymous namespace8141 8142/// /EH controls whether to run destructor cleanups when exceptions are8143/// thrown. There are three modifiers:8144/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.8145/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.8146/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.8147/// - c: Assume that extern "C" functions are implicitly nounwind.8148/// The default is /EHs-c-, meaning cleanups are disabled.8149static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args,8150 bool isWindowsMSVC) {8151 EHFlags EH;8152 8153 std::vector<std::string> EHArgs =8154 Args.getAllArgValues(options::OPT__SLASH_EH);8155 for (const auto &EHVal : EHArgs) {8156 for (size_t I = 0, E = EHVal.size(); I != E; ++I) {8157 switch (EHVal[I]) {8158 case 'a':8159 EH.Asynch = maybeConsumeDash(EHVal, I);8160 if (EH.Asynch) {8161 // Async exceptions are Windows MSVC only.8162 if (!isWindowsMSVC) {8163 EH.Asynch = false;8164 D.Diag(clang::diag::warn_drv_unused_argument) << "/EHa" << EHVal;8165 continue;8166 }8167 EH.Synch = false;8168 }8169 continue;8170 case 'c':8171 EH.NoUnwindC = maybeConsumeDash(EHVal, I);8172 continue;8173 case 's':8174 EH.Synch = maybeConsumeDash(EHVal, I);8175 if (EH.Synch)8176 EH.Asynch = false;8177 continue;8178 default:8179 break;8180 }8181 D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;8182 break;8183 }8184 }8185 // The /GX, /GX- flags are only processed if there are not /EH flags.8186 // The default is that /GX is not specified.8187 if (EHArgs.empty() &&8188 Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,8189 /*Default=*/false)) {8190 EH.Synch = true;8191 EH.NoUnwindC = true;8192 }8193 8194 if (Args.hasArg(options::OPT__SLASH_kernel)) {8195 EH.Synch = false;8196 EH.NoUnwindC = false;8197 EH.Asynch = false;8198 }8199 8200 return EH;8201}8202 8203void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,8204 ArgStringList &CmdArgs) const {8205 bool isNVPTX = getToolChain().getTriple().isNVPTX();8206 8207 ProcessVSRuntimeLibrary(getToolChain(), Args, CmdArgs);8208 8209 if (Arg *ShowIncludes =8210 Args.getLastArg(options::OPT__SLASH_showIncludes,8211 options::OPT__SLASH_showIncludes_user)) {8212 CmdArgs.push_back("--show-includes");8213 if (ShowIncludes->getOption().matches(options::OPT__SLASH_showIncludes))8214 CmdArgs.push_back("-sys-header-deps");8215 }8216 8217 // This controls whether or not we emit RTTI data for polymorphic types.8218 if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,8219 /*Default=*/false))8220 CmdArgs.push_back("-fno-rtti-data");8221 8222 // This controls whether or not we emit stack-protector instrumentation.8223 // In MSVC, Buffer Security Check (/GS) is on by default.8224 if (!isNVPTX && Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,8225 /*Default=*/true)) {8226 CmdArgs.push_back("-stack-protector");8227 CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));8228 }8229 8230 const Driver &D = getToolChain().getDriver();8231 8232 bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();8233 EHFlags EH = parseClangCLEHFlags(D, Args, IsWindowsMSVC);8234 if (!isNVPTX && (EH.Synch || EH.Asynch)) {8235 if (types::isCXX(InputType))8236 CmdArgs.push_back("-fcxx-exceptions");8237 CmdArgs.push_back("-fexceptions");8238 if (EH.Asynch)8239 CmdArgs.push_back("-fasync-exceptions");8240 }8241 if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)8242 CmdArgs.push_back("-fexternc-nounwind");8243 8244 // /EP should expand to -E -P.8245 if (Args.hasArg(options::OPT__SLASH_EP)) {8246 CmdArgs.push_back("-E");8247 CmdArgs.push_back("-P");8248 }8249 8250 if (Args.hasFlag(options::OPT__SLASH_Zc_dllexportInlines_,8251 options::OPT__SLASH_Zc_dllexportInlines,8252 false)) {8253 CmdArgs.push_back("-fno-dllexport-inlines");8254 }8255 8256 if (Args.hasFlag(options::OPT__SLASH_Zc_wchar_t_,8257 options::OPT__SLASH_Zc_wchar_t, false)) {8258 CmdArgs.push_back("-fno-wchar");8259 }8260 8261 if (Args.hasArg(options::OPT__SLASH_kernel)) {8262 llvm::Triple::ArchType Arch = getToolChain().getArch();8263 std::vector<std::string> Values =8264 Args.getAllArgValues(options::OPT__SLASH_arch);8265 if (!Values.empty()) {8266 llvm::SmallSet<std::string, 4> SupportedArches;8267 if (Arch == llvm::Triple::x86)8268 SupportedArches.insert("IA32");8269 8270 for (auto &V : Values)8271 if (!SupportedArches.contains(V))8272 D.Diag(diag::err_drv_argument_not_allowed_with)8273 << std::string("/arch:").append(V) << "/kernel";8274 }8275 8276 CmdArgs.push_back("-fno-rtti");8277 if (Args.hasFlag(options::OPT__SLASH_GR, options::OPT__SLASH_GR_, false))8278 D.Diag(diag::err_drv_argument_not_allowed_with) << "/GR"8279 << "/kernel";8280 }8281 8282 if (const Arg *A = Args.getLastArg(options::OPT__SLASH_vlen,8283 options::OPT__SLASH_vlen_EQ_256,8284 options::OPT__SLASH_vlen_EQ_512)) {8285 llvm::Triple::ArchType AT = getToolChain().getArch();8286 StringRef Default = AT == llvm::Triple::x86 ? "IA32" : "SSE2";8287 StringRef Arch = Args.getLastArgValue(options::OPT__SLASH_arch, Default);8288 llvm::SmallSet<StringRef, 4> Arch512 = {"AVX512F", "AVX512", "AVX10.1",8289 "AVX10.2"};8290 8291 if (A->getOption().matches(options::OPT__SLASH_vlen_EQ_512)) {8292 if (Arch512.contains(Arch))8293 CmdArgs.push_back("-mprefer-vector-width=512");8294 else8295 D.Diag(diag::warn_drv_argument_not_allowed_with)8296 << "/vlen=512" << std::string("/arch:").append(Arch);8297 } else if (A->getOption().matches(options::OPT__SLASH_vlen_EQ_256)) {8298 if (Arch512.contains(Arch))8299 CmdArgs.push_back("-mprefer-vector-width=256");8300 else if (Arch != "AVX" && Arch != "AVX2")8301 D.Diag(diag::warn_drv_argument_not_allowed_with)8302 << "/vlen=256" << std::string("/arch:").append(Arch);8303 } else {8304 if (Arch == "AVX10.1" || Arch == "AVX10.2")8305 CmdArgs.push_back("-mprefer-vector-width=256");8306 }8307 } else {8308 StringRef Arch = Args.getLastArgValue(options::OPT__SLASH_arch);8309 if (Arch == "AVX10.1" || Arch == "AVX10.2")8310 CmdArgs.push_back("-mprefer-vector-width=256");8311 }8312 8313 Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);8314 Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);8315 if (MostGeneralArg && BestCaseArg)8316 D.Diag(clang::diag::err_drv_argument_not_allowed_with)8317 << MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);8318 8319 if (MostGeneralArg) {8320 Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);8321 Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);8322 Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);8323 8324 Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;8325 Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;8326 if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)8327 D.Diag(clang::diag::err_drv_argument_not_allowed_with)8328 << FirstConflict->getAsString(Args)8329 << SecondConflict->getAsString(Args);8330 8331 if (SingleArg)8332 CmdArgs.push_back("-fms-memptr-rep=single");8333 else if (MultipleArg)8334 CmdArgs.push_back("-fms-memptr-rep=multiple");8335 else8336 CmdArgs.push_back("-fms-memptr-rep=virtual");8337 }8338 8339 if (Args.hasArg(options::OPT_regcall4))8340 CmdArgs.push_back("-regcall4");8341 8342 // Parse the default calling convention options.8343 if (Arg *CCArg =8344 Args.getLastArg(options::OPT__SLASH_Gd, options::OPT__SLASH_Gr,8345 options::OPT__SLASH_Gz, options::OPT__SLASH_Gv,8346 options::OPT__SLASH_Gregcall)) {8347 unsigned DCCOptId = CCArg->getOption().getID();8348 const char *DCCFlag = nullptr;8349 bool ArchSupported = !isNVPTX;8350 llvm::Triple::ArchType Arch = getToolChain().getArch();8351 switch (DCCOptId) {8352 case options::OPT__SLASH_Gd:8353 DCCFlag = "-fdefault-calling-conv=cdecl";8354 break;8355 case options::OPT__SLASH_Gr:8356 ArchSupported = Arch == llvm::Triple::x86;8357 DCCFlag = "-fdefault-calling-conv=fastcall";8358 break;8359 case options::OPT__SLASH_Gz:8360 ArchSupported = Arch == llvm::Triple::x86;8361 DCCFlag = "-fdefault-calling-conv=stdcall";8362 break;8363 case options::OPT__SLASH_Gv:8364 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;8365 DCCFlag = "-fdefault-calling-conv=vectorcall";8366 break;8367 case options::OPT__SLASH_Gregcall:8368 ArchSupported = Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64;8369 DCCFlag = "-fdefault-calling-conv=regcall";8370 break;8371 }8372 8373 // MSVC doesn't warn if /Gr or /Gz is used on x64, so we don't either.8374 if (ArchSupported && DCCFlag)8375 CmdArgs.push_back(DCCFlag);8376 }8377 8378 if (Args.hasArg(options::OPT__SLASH_Gregcall4))8379 CmdArgs.push_back("-regcall4");8380 8381 Args.AddLastArg(CmdArgs, options::OPT_vtordisp_mode_EQ);8382 8383 if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {8384 CmdArgs.push_back("-fdiagnostics-format");8385 CmdArgs.push_back("msvc");8386 }8387 8388 if (Args.hasArg(options::OPT__SLASH_kernel))8389 CmdArgs.push_back("-fms-kernel");8390 8391 // Unwind v2 (epilog) information for x64 Windows.8392 if (Args.hasArg(options::OPT__SLASH_d2epilogunwindrequirev2))8393 CmdArgs.push_back("-fwinx64-eh-unwindv2=required");8394 else if (Args.hasArg(options::OPT__SLASH_d2epilogunwind))8395 CmdArgs.push_back("-fwinx64-eh-unwindv2=best-effort");8396 8397 for (const Arg *A : Args.filtered(options::OPT__SLASH_guard)) {8398 StringRef GuardArgs = A->getValue();8399 // The only valid options are "cf", "cf,nochecks", "cf-", "ehcont" and8400 // "ehcont-".8401 if (GuardArgs.equals_insensitive("cf")) {8402 // Emit CFG instrumentation and the table of address-taken functions.8403 CmdArgs.push_back("-cfguard");8404 } else if (GuardArgs.equals_insensitive("cf,nochecks")) {8405 // Emit only the table of address-taken functions.8406 CmdArgs.push_back("-cfguard-no-checks");8407 } else if (GuardArgs.equals_insensitive("ehcont")) {8408 // Emit EH continuation table.8409 CmdArgs.push_back("-ehcontguard");8410 } else if (GuardArgs.equals_insensitive("cf-") ||8411 GuardArgs.equals_insensitive("ehcont-")) {8412 // Do nothing, but we might want to emit a security warning in future.8413 } else {8414 D.Diag(diag::err_drv_invalid_value) << A->getSpelling() << GuardArgs;8415 }8416 A->claim();8417 }8418 8419 for (const auto &FuncOverride :8420 Args.getAllArgValues(options::OPT__SLASH_funcoverride)) {8421 CmdArgs.push_back(Args.MakeArgString(8422 Twine("-loader-replaceable-function=") + FuncOverride));8423 }8424}8425 8426const char *Clang::getBaseInputName(const ArgList &Args,8427 const InputInfo &Input) {8428 return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));8429}8430 8431const char *Clang::getBaseInputStem(const ArgList &Args,8432 const InputInfoList &Inputs) {8433 const char *Str = getBaseInputName(Args, Inputs[0]);8434 8435 if (const char *End = strrchr(Str, '.'))8436 return Args.MakeArgString(std::string(Str, End));8437 8438 return Str;8439}8440 8441const char *Clang::getDependencyFileName(const ArgList &Args,8442 const InputInfoList &Inputs) {8443 // FIXME: Think about this more.8444 8445 if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {8446 SmallString<128> OutputFilename(OutputOpt->getValue());8447 llvm::sys::path::replace_extension(OutputFilename, llvm::Twine('d'));8448 return Args.MakeArgString(OutputFilename);8449 }8450 8451 return Args.MakeArgString(Twine(getBaseInputStem(Args, Inputs)) + ".d");8452}8453 8454// Begin ClangAs8455 8456void ClangAs::AddMIPSTargetArgs(const ArgList &Args,8457 ArgStringList &CmdArgs) const {8458 StringRef CPUName;8459 StringRef ABIName;8460 const llvm::Triple &Triple = getToolChain().getTriple();8461 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);8462 8463 CmdArgs.push_back("-target-abi");8464 CmdArgs.push_back(ABIName.data());8465}8466 8467void ClangAs::AddX86TargetArgs(const ArgList &Args,8468 ArgStringList &CmdArgs) const {8469 addX86AlignBranchArgs(getToolChain().getDriver(), Args, CmdArgs,8470 /*IsLTO=*/false);8471 8472 if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {8473 StringRef Value = A->getValue();8474 if (Value == "intel" || Value == "att") {8475 CmdArgs.push_back("-mllvm");8476 CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));8477 } else {8478 getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)8479 << A->getSpelling() << Value;8480 }8481 }8482}8483 8484void ClangAs::AddLoongArchTargetArgs(const ArgList &Args,8485 ArgStringList &CmdArgs) const {8486 CmdArgs.push_back("-target-abi");8487 CmdArgs.push_back(loongarch::getLoongArchABI(getToolChain().getDriver(), Args,8488 getToolChain().getTriple())8489 .data());8490}8491 8492void ClangAs::AddRISCVTargetArgs(const ArgList &Args,8493 ArgStringList &CmdArgs) const {8494 const llvm::Triple &Triple = getToolChain().getTriple();8495 StringRef ABIName = riscv::getRISCVABI(Args, Triple);8496 8497 CmdArgs.push_back("-target-abi");8498 CmdArgs.push_back(ABIName.data());8499 8500 if (Args.hasFlag(options::OPT_mdefault_build_attributes,8501 options::OPT_mno_default_build_attributes, true)) {8502 CmdArgs.push_back("-mllvm");8503 CmdArgs.push_back("-riscv-add-build-attributes");8504 }8505}8506 8507void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,8508 const InputInfo &Output, const InputInfoList &Inputs,8509 const ArgList &Args,8510 const char *LinkingOutput) const {8511 ArgStringList CmdArgs;8512 8513 assert(Inputs.size() == 1 && "Unexpected number of inputs.");8514 const InputInfo &Input = Inputs[0];8515 8516 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();8517 const std::string &TripleStr = Triple.getTriple();8518 const auto &D = getToolChain().getDriver();8519 8520 // Don't warn about "clang -w -c foo.s"8521 Args.ClaimAllArgs(options::OPT_w);8522 // and "clang -emit-llvm -c foo.s"8523 Args.ClaimAllArgs(options::OPT_emit_llvm);8524 8525 claimNoWarnArgs(Args);8526 8527 // Invoke ourselves in -cc1as mode.8528 //8529 // FIXME: Implement custom jobs for internal actions.8530 CmdArgs.push_back("-cc1as");8531 8532 // Add the "effective" target triple.8533 CmdArgs.push_back("-triple");8534 CmdArgs.push_back(Args.MakeArgString(TripleStr));8535 8536 getToolChain().addClangCC1ASTargetOptions(Args, CmdArgs);8537 8538 // Set the output mode, we currently only expect to be used as a real8539 // assembler.8540 CmdArgs.push_back("-filetype");8541 CmdArgs.push_back("obj");8542 8543 // Set the main file name, so that debug info works even with8544 // -save-temps or preprocessed assembly.8545 CmdArgs.push_back("-main-file-name");8546 CmdArgs.push_back(Clang::getBaseInputName(Args, Input));8547 8548 // Add the target cpu8549 std::string CPU = getCPUName(D, Args, Triple, /*FromAs*/ true);8550 if (!CPU.empty()) {8551 CmdArgs.push_back("-target-cpu");8552 CmdArgs.push_back(Args.MakeArgString(CPU));8553 }8554 8555 // Add the target features8556 getTargetFeatures(D, Triple, Args, CmdArgs, true);8557 8558 // Ignore explicit -force_cpusubtype_ALL option.8559 (void)Args.hasArg(options::OPT_force__cpusubtype__ALL);8560 8561 // Pass along any -I options so we get proper .include search paths.8562 Args.AddAllArgs(CmdArgs, options::OPT_I_Group);8563 8564 // Pass along any --embed-dir or similar options so we get proper embed paths.8565 Args.AddAllArgs(CmdArgs, options::OPT_embed_dir_EQ);8566 8567 // Determine the original source input.8568 auto FindSource = [](const Action *S) -> const Action * {8569 while (S->getKind() != Action::InputClass) {8570 assert(!S->getInputs().empty() && "unexpected root action!");8571 S = S->getInputs()[0];8572 }8573 return S;8574 };8575 const Action *SourceAction = FindSource(&JA);8576 8577 // Forward -g and handle debug info related flags, assuming we are dealing8578 // with an actual assembly file.8579 bool WantDebug = false;8580 Args.ClaimAllArgs(options::OPT_g_Group);8581 if (Arg *A = Args.getLastArg(options::OPT_g_Group))8582 WantDebug = !A->getOption().matches(options::OPT_g0) &&8583 !A->getOption().matches(options::OPT_ggdb0);8584 8585 // If a -gdwarf argument appeared, remember it.8586 bool EmitDwarf = false;8587 if (const Arg *A = getDwarfNArg(Args))8588 EmitDwarf = checkDebugInfoOption(A, Args, D, getToolChain());8589 8590 bool EmitCodeView = false;8591 if (const Arg *A = Args.getLastArg(options::OPT_gcodeview))8592 EmitCodeView = checkDebugInfoOption(A, Args, D, getToolChain());8593 8594 // If the user asked for debug info but did not explicitly specify -gcodeview8595 // or -gdwarf, ask the toolchain for the default format.8596 if (!EmitCodeView && !EmitDwarf && WantDebug) {8597 switch (getToolChain().getDefaultDebugFormat()) {8598 case llvm::codegenoptions::DIF_CodeView:8599 EmitCodeView = true;8600 break;8601 case llvm::codegenoptions::DIF_DWARF:8602 EmitDwarf = true;8603 break;8604 }8605 }8606 8607 // If the arguments don't imply DWARF, don't emit any debug info here.8608 if (!EmitDwarf)8609 WantDebug = false;8610 8611 llvm::codegenoptions::DebugInfoKind DebugInfoKind =8612 llvm::codegenoptions::NoDebugInfo;8613 8614 // Add the -fdebug-compilation-dir flag if needed.8615 const char *DebugCompilationDir =8616 addDebugCompDirArg(Args, CmdArgs, C.getDriver().getVFS());8617 8618 if (SourceAction->getType() == types::TY_Asm ||8619 SourceAction->getType() == types::TY_PP_Asm) {8620 // You might think that it would be ok to set DebugInfoKind outside of8621 // the guard for source type, however there is a test which asserts8622 // that some assembler invocation receives no -debug-info-kind,8623 // and it's not clear whether that test is just overly restrictive.8624 DebugInfoKind = (WantDebug ? llvm::codegenoptions::DebugInfoConstructor8625 : llvm::codegenoptions::NoDebugInfo);8626 8627 addDebugPrefixMapArg(getToolChain().getDriver(), getToolChain(), Args,8628 CmdArgs);8629 8630 // Set the AT_producer to the clang version when using the integrated8631 // assembler on assembly source files.8632 CmdArgs.push_back("-dwarf-debug-producer");8633 CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));8634 8635 // And pass along -I options8636 Args.AddAllArgs(CmdArgs, options::OPT_I);8637 }8638 const unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args);8639 RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,8640 llvm::DebuggerKind::Default);8641 renderDwarfFormat(D, Triple, Args, CmdArgs, DwarfVersion);8642 RenderDebugInfoCompressionArgs(Args, CmdArgs, D, getToolChain());8643 8644 // Handle -fPIC et al -- the relocation-model affects the assembler8645 // for some targets.8646 llvm::Reloc::Model RelocationModel;8647 unsigned PICLevel;8648 bool IsPIE;8649 std::tie(RelocationModel, PICLevel, IsPIE) =8650 ParsePICArgs(getToolChain(), Args);8651 8652 const char *RMName = RelocationModelName(RelocationModel);8653 if (RMName) {8654 CmdArgs.push_back("-mrelocation-model");8655 CmdArgs.push_back(RMName);8656 }8657 8658 // Optionally embed the -cc1as level arguments into the debug info, for build8659 // analysis.8660 if (getToolChain().UseDwarfDebugFlags()) {8661 ArgStringList OriginalArgs;8662 for (const auto &Arg : Args)8663 Arg->render(Args, OriginalArgs);8664 8665 SmallString<256> Flags;8666 const char *Exec = getToolChain().getDriver().getClangProgramPath();8667 escapeSpacesAndBackslashes(Exec, Flags);8668 for (const char *OriginalArg : OriginalArgs) {8669 SmallString<128> EscapedArg;8670 escapeSpacesAndBackslashes(OriginalArg, EscapedArg);8671 Flags += " ";8672 Flags += EscapedArg;8673 }8674 CmdArgs.push_back("-dwarf-debug-flags");8675 CmdArgs.push_back(Args.MakeArgString(Flags));8676 }8677 8678 // FIXME: Add -static support, once we have it.8679 8680 // Add target specific flags.8681 switch (getToolChain().getArch()) {8682 default:8683 break;8684 8685 case llvm::Triple::mips:8686 case llvm::Triple::mipsel:8687 case llvm::Triple::mips64:8688 case llvm::Triple::mips64el:8689 AddMIPSTargetArgs(Args, CmdArgs);8690 break;8691 8692 case llvm::Triple::x86:8693 case llvm::Triple::x86_64:8694 AddX86TargetArgs(Args, CmdArgs);8695 break;8696 8697 case llvm::Triple::arm:8698 case llvm::Triple::armeb:8699 case llvm::Triple::thumb:8700 case llvm::Triple::thumbeb:8701 // This isn't in AddARMTargetArgs because we want to do this for assembly8702 // only, not C/C++.8703 if (Args.hasFlag(options::OPT_mdefault_build_attributes,8704 options::OPT_mno_default_build_attributes, true)) {8705 CmdArgs.push_back("-mllvm");8706 CmdArgs.push_back("-arm-add-build-attributes");8707 }8708 break;8709 8710 case llvm::Triple::aarch64:8711 case llvm::Triple::aarch64_32:8712 case llvm::Triple::aarch64_be:8713 if (Args.hasArg(options::OPT_mmark_bti_property)) {8714 CmdArgs.push_back("-mllvm");8715 CmdArgs.push_back("-aarch64-mark-bti-property");8716 }8717 break;8718 8719 case llvm::Triple::loongarch32:8720 case llvm::Triple::loongarch64:8721 AddLoongArchTargetArgs(Args, CmdArgs);8722 break;8723 8724 case llvm::Triple::riscv32:8725 case llvm::Triple::riscv64:8726 AddRISCVTargetArgs(Args, CmdArgs);8727 break;8728 8729 case llvm::Triple::hexagon:8730 if (Args.hasFlag(options::OPT_mdefault_build_attributes,8731 options::OPT_mno_default_build_attributes, true)) {8732 CmdArgs.push_back("-mllvm");8733 CmdArgs.push_back("-hexagon-add-build-attributes");8734 }8735 break;8736 }8737 8738 // Consume all the warning flags. Usually this would be handled more8739 // gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as8740 // doesn't handle that so rather than warning about unused flags that are8741 // actually used, we'll lie by omission instead.8742 // FIXME: Stop lying and consume only the appropriate driver flags8743 Args.ClaimAllArgs(options::OPT_W_Group);8744 8745 CollectArgsForIntegratedAssembler(C, Args, CmdArgs,8746 getToolChain().getDriver());8747 8748 // Forward -Xclangas arguments to -cc1as8749 for (auto Arg : Args.filtered(options::OPT_Xclangas)) {8750 Arg->claim();8751 CmdArgs.push_back(Arg->getValue());8752 }8753 8754 Args.AddAllArgs(CmdArgs, options::OPT_mllvm);8755 8756 if (DebugInfoKind > llvm::codegenoptions::NoDebugInfo && Output.isFilename())8757 addDebugObjectName(Args, CmdArgs, DebugCompilationDir,8758 Output.getFilename());8759 8760 // Fixup any previous commands that use -object-file-name because when we8761 // generated them, the final .obj name wasn't yet known.8762 for (Command &J : C.getJobs()) {8763 if (SourceAction != FindSource(&J.getSource()))8764 continue;8765 auto &JArgs = J.getArguments();8766 for (unsigned I = 0; I < JArgs.size(); ++I) {8767 if (StringRef(JArgs[I]).starts_with("-object-file-name=") &&8768 Output.isFilename()) {8769 ArgStringList NewArgs(JArgs.begin(), JArgs.begin() + I);8770 addDebugObjectName(Args, NewArgs, DebugCompilationDir,8771 Output.getFilename());8772 NewArgs.append(JArgs.begin() + I + 1, JArgs.end());8773 J.replaceArguments(NewArgs);8774 break;8775 }8776 }8777 }8778 8779 assert(Output.isFilename() && "Unexpected lipo output.");8780 CmdArgs.push_back("-o");8781 CmdArgs.push_back(Output.getFilename());8782 8783 const llvm::Triple &T = getToolChain().getTriple();8784 Arg *A;8785 if (getDebugFissionKind(D, Args, A) == DwarfFissionKind::Split &&8786 T.isOSBinFormatELF()) {8787 CmdArgs.push_back("-split-dwarf-output");8788 CmdArgs.push_back(SplitDebugName(JA, Args, Input, Output));8789 }8790 8791 if (Triple.isAMDGPU())8792 handleAMDGPUCodeObjectVersionOptions(D, Args, CmdArgs, /*IsCC1As=*/true);8793 8794 assert(Input.isFilename() && "Invalid input.");8795 CmdArgs.push_back(Input.getFilename());8796 8797 const char *Exec = getToolChain().getDriver().getClangProgramPath();8798 if (D.CC1Main && !D.CCGenDiagnostics) {8799 // Invoke cc1as directly in this process.8800 C.addCommand(std::make_unique<CC1Command>(8801 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,8802 Output, D.getPrependArg()));8803 } else {8804 C.addCommand(std::make_unique<Command>(8805 JA, *this, ResponseFileSupport::AtFileUTF8(), Exec, CmdArgs, Inputs,8806 Output, D.getPrependArg()));8807 }8808}8809 8810// Begin OffloadBundler8811void OffloadBundler::ConstructJob(Compilation &C, const JobAction &JA,8812 const InputInfo &Output,8813 const InputInfoList &Inputs,8814 const llvm::opt::ArgList &TCArgs,8815 const char *LinkingOutput) const {8816 // The version with only one output is expected to refer to a bundling job.8817 assert(isa<OffloadBundlingJobAction>(JA) && "Expecting bundling job!");8818 8819 // The bundling command looks like this:8820 // clang-offload-bundler -type=bc8821 // -targets=host-triple,openmp-triple1,openmp-triple28822 // -output=output_file8823 // -input=unbundle_file_host8824 // -input=unbundle_file_tgt18825 // -input=unbundle_file_tgt28826 8827 ArgStringList CmdArgs;8828 8829 // Get the type.8830 CmdArgs.push_back(TCArgs.MakeArgString(8831 Twine("-type=") + types::getTypeTempSuffix(Output.getType())));8832 8833 assert(JA.getInputs().size() == Inputs.size() &&8834 "Not have inputs for all dependence actions??");8835 8836 // Get the targets.8837 SmallString<128> Triples;8838 Triples += "-targets=";8839 for (unsigned I = 0; I < Inputs.size(); ++I) {8840 if (I)8841 Triples += ',';8842 8843 // Find ToolChain for this input.8844 Action::OffloadKind CurKind = Action::OFK_Host;8845 const ToolChain *CurTC = &getToolChain();8846 const Action *CurDep = JA.getInputs()[I];8847 8848 if (const auto *OA = dyn_cast<OffloadAction>(CurDep)) {8849 CurTC = nullptr;8850 OA->doOnEachDependence([&](Action *A, const ToolChain *TC, const char *) {8851 assert(CurTC == nullptr && "Expected one dependence!");8852 CurKind = A->getOffloadingDeviceKind();8853 CurTC = TC;8854 });8855 }8856 Triples += Action::GetOffloadKindName(CurKind);8857 Triples += '-';8858 Triples +=8859 CurTC->getTriple().normalize(llvm::Triple::CanonicalForm::FOUR_IDENT);8860 if ((CurKind == Action::OFK_HIP || CurKind == Action::OFK_Cuda) &&8861 !StringRef(CurDep->getOffloadingArch()).empty()) {8862 Triples += '-';8863 Triples += CurDep->getOffloadingArch();8864 }8865 8866 // TODO: Replace parsing of -march flag. Can be done by storing GPUArch8867 // with each toolchain.8868 StringRef GPUArchName;8869 if (CurKind == Action::OFK_OpenMP) {8870 // Extract GPUArch from -march argument in TC argument list.8871 for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {8872 auto ArchStr = StringRef(TCArgs.getArgString(ArgIndex));8873 auto Arch = ArchStr.starts_with_insensitive("-march=");8874 if (Arch) {8875 GPUArchName = ArchStr.substr(7);8876 Triples += "-";8877 break;8878 }8879 }8880 Triples += GPUArchName.str();8881 }8882 }8883 CmdArgs.push_back(TCArgs.MakeArgString(Triples));8884 8885 // Get bundled file command.8886 CmdArgs.push_back(8887 TCArgs.MakeArgString(Twine("-output=") + Output.getFilename()));8888 8889 // Get unbundled files command.8890 for (unsigned I = 0; I < Inputs.size(); ++I) {8891 SmallString<128> UB;8892 UB += "-input=";8893 8894 // Find ToolChain for this input.8895 const ToolChain *CurTC = &getToolChain();8896 if (const auto *OA = dyn_cast<OffloadAction>(JA.getInputs()[I])) {8897 CurTC = nullptr;8898 OA->doOnEachDependence([&](Action *, const ToolChain *TC, const char *) {8899 assert(CurTC == nullptr && "Expected one dependence!");8900 CurTC = TC;8901 });8902 UB += C.addTempFile(8903 C.getArgs().MakeArgString(CurTC->getInputFilename(Inputs[I])));8904 } else {8905 UB += CurTC->getInputFilename(Inputs[I]);8906 }8907 CmdArgs.push_back(TCArgs.MakeArgString(UB));8908 }8909 addOffloadCompressArgs(TCArgs, CmdArgs);8910 // All the inputs are encoded as commands.8911 C.addCommand(std::make_unique<Command>(8912 JA, *this, ResponseFileSupport::None(),8913 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),8914 CmdArgs, ArrayRef<InputInfo>(), Output));8915}8916 8917void OffloadBundler::ConstructJobMultipleOutputs(8918 Compilation &C, const JobAction &JA, const InputInfoList &Outputs,8919 const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs,8920 const char *LinkingOutput) const {8921 // The version with multiple outputs is expected to refer to a unbundling job.8922 auto &UA = cast<OffloadUnbundlingJobAction>(JA);8923 8924 // The unbundling command looks like this:8925 // clang-offload-bundler -type=bc8926 // -targets=host-triple,openmp-triple1,openmp-triple28927 // -input=input_file8928 // -output=unbundle_file_host8929 // -output=unbundle_file_tgt18930 // -output=unbundle_file_tgt28931 // -unbundle8932 8933 ArgStringList CmdArgs;8934 8935 assert(Inputs.size() == 1 && "Expecting to unbundle a single file!");8936 InputInfo Input = Inputs.front();8937 8938 // Get the type.8939 CmdArgs.push_back(TCArgs.MakeArgString(8940 Twine("-type=") + types::getTypeTempSuffix(Input.getType())));8941 8942 // Get the targets.8943 SmallString<128> Triples;8944 Triples += "-targets=";8945 auto DepInfo = UA.getDependentActionsInfo();8946 for (unsigned I = 0; I < DepInfo.size(); ++I) {8947 if (I)8948 Triples += ',';8949 8950 auto &Dep = DepInfo[I];8951 Triples += Action::GetOffloadKindName(Dep.DependentOffloadKind);8952 Triples += '-';8953 Triples += Dep.DependentToolChain->getTriple().normalize(8954 llvm::Triple::CanonicalForm::FOUR_IDENT);8955 if ((Dep.DependentOffloadKind == Action::OFK_HIP ||8956 Dep.DependentOffloadKind == Action::OFK_Cuda) &&8957 !Dep.DependentBoundArch.empty()) {8958 Triples += '-';8959 Triples += Dep.DependentBoundArch;8960 }8961 // TODO: Replace parsing of -march flag. Can be done by storing GPUArch8962 // with each toolchain.8963 StringRef GPUArchName;8964 if (Dep.DependentOffloadKind == Action::OFK_OpenMP) {8965 // Extract GPUArch from -march argument in TC argument list.8966 for (unsigned ArgIndex = 0; ArgIndex < TCArgs.size(); ArgIndex++) {8967 StringRef ArchStr = StringRef(TCArgs.getArgString(ArgIndex));8968 auto Arch = ArchStr.starts_with_insensitive("-march=");8969 if (Arch) {8970 GPUArchName = ArchStr.substr(7);8971 Triples += "-";8972 break;8973 }8974 }8975 Triples += GPUArchName.str();8976 }8977 }8978 8979 CmdArgs.push_back(TCArgs.MakeArgString(Triples));8980 8981 // Get bundled file command.8982 CmdArgs.push_back(8983 TCArgs.MakeArgString(Twine("-input=") + Input.getFilename()));8984 8985 // Get unbundled files command.8986 for (unsigned I = 0; I < Outputs.size(); ++I) {8987 SmallString<128> UB;8988 UB += "-output=";8989 UB += DepInfo[I].DependentToolChain->getInputFilename(Outputs[I]);8990 CmdArgs.push_back(TCArgs.MakeArgString(UB));8991 }8992 CmdArgs.push_back("-unbundle");8993 CmdArgs.push_back("-allow-missing-bundles");8994 if (TCArgs.hasArg(options::OPT_v))8995 CmdArgs.push_back("-verbose");8996 8997 // All the inputs are encoded as commands.8998 C.addCommand(std::make_unique<Command>(8999 JA, *this, ResponseFileSupport::None(),9000 TCArgs.MakeArgString(getToolChain().GetProgramPath(getShortName())),9001 CmdArgs, ArrayRef<InputInfo>(), Outputs));9002}9003 9004void OffloadPackager::ConstructJob(Compilation &C, const JobAction &JA,9005 const InputInfo &Output,9006 const InputInfoList &Inputs,9007 const llvm::opt::ArgList &Args,9008 const char *LinkingOutput) const {9009 ArgStringList CmdArgs;9010 9011 // Add the output file name.9012 assert(Output.isFilename() && "Invalid output.");9013 CmdArgs.push_back("-o");9014 CmdArgs.push_back(Output.getFilename());9015 9016 // Create the inputs to bundle the needed metadata.9017 for (const InputInfo &Input : Inputs) {9018 const Action *OffloadAction = Input.getAction();9019 const ToolChain *TC = OffloadAction->getOffloadingToolChain();9020 const ArgList &TCArgs =9021 C.getArgsForToolChain(TC, OffloadAction->getOffloadingArch(),9022 OffloadAction->getOffloadingDeviceKind());9023 StringRef File = C.getArgs().MakeArgString(TC->getInputFilename(Input));9024 StringRef Arch = OffloadAction->getOffloadingArch()9025 ? OffloadAction->getOffloadingArch()9026 : TCArgs.getLastArgValue(options::OPT_march_EQ);9027 StringRef Kind =9028 Action::GetOffloadKindName(OffloadAction->getOffloadingDeviceKind());9029 9030 ArgStringList Features;9031 SmallVector<StringRef> FeatureArgs;9032 getTargetFeatures(TC->getDriver(), TC->getTriple(), TCArgs, Features,9033 false);9034 llvm::copy_if(Features, std::back_inserter(FeatureArgs),9035 [](StringRef Arg) { return !Arg.starts_with("-target"); });9036 9037 // TODO: We need to pass in the full target-id and handle it properly in the9038 // linker wrapper.9039 SmallVector<std::string> Parts{9040 "file=" + File.str(),9041 "triple=" + TC->getTripleString(),9042 "arch=" + (Arch.empty() ? "generic" : Arch.str()),9043 "kind=" + Kind.str(),9044 };9045 9046 if (TC->getDriver().isUsingOffloadLTO())9047 for (StringRef Feature : FeatureArgs)9048 Parts.emplace_back("feature=" + Feature.str());9049 9050 CmdArgs.push_back(Args.MakeArgString("--image=" + llvm::join(Parts, ",")));9051 }9052 9053 C.addCommand(std::make_unique<Command>(9054 JA, *this, ResponseFileSupport::None(),9055 Args.MakeArgString(getToolChain().GetProgramPath(getShortName())),9056 CmdArgs, Inputs, Output));9057}9058 9059void LinkerWrapper::ConstructJob(Compilation &C, const JobAction &JA,9060 const InputInfo &Output,9061 const InputInfoList &Inputs,9062 const ArgList &Args,9063 const char *LinkingOutput) const {9064 using namespace options;9065 9066 // A list of permitted options that will be forwarded to the embedded device9067 // compilation job.9068 const llvm::DenseSet<unsigned> CompilerOptions{9069 OPT_v,9070 OPT_cuda_path_EQ,9071 OPT_rocm_path_EQ,9072 OPT_O_Group,9073 OPT_g_Group,9074 OPT_g_flags_Group,9075 OPT_R_value_Group,9076 OPT_R_Group,9077 OPT_Xcuda_ptxas,9078 OPT_ftime_report,9079 OPT_ftime_trace,9080 OPT_ftime_trace_EQ,9081 OPT_ftime_trace_granularity_EQ,9082 OPT_ftime_trace_verbose,9083 OPT_opt_record_file,9084 OPT_opt_record_format,9085 OPT_opt_record_passes,9086 OPT_fsave_optimization_record,9087 OPT_fsave_optimization_record_EQ,9088 OPT_fno_save_optimization_record,9089 OPT_foptimization_record_file_EQ,9090 OPT_foptimization_record_passes_EQ,9091 OPT_save_temps,9092 OPT_save_temps_EQ,9093 OPT_mcode_object_version_EQ,9094 OPT_load,9095 OPT_fno_lto,9096 OPT_flto,9097 OPT_flto_partitions_EQ,9098 OPT_flto_EQ,9099 OPT_use_spirv_backend};9100 9101 const llvm::DenseSet<unsigned> LinkerOptions{OPT_mllvm, OPT_Zlinker_input};9102 auto ShouldForwardForToolChain = [&](Arg *A, const ToolChain &TC) {9103 // Don't forward -mllvm to toolchains that don't support LLVM.9104 return TC.HasNativeLLVMSupport() || A->getOption().getID() != OPT_mllvm;9105 };9106 auto ShouldForward = [&](const llvm::DenseSet<unsigned> &Set, Arg *A,9107 const ToolChain &TC) {9108 // CMake hack to avoid printing verbose informatoin for HIP non-RDC mode.9109 if (A->getOption().matches(OPT_v) && JA.getType() == types::TY_HIP_FATBIN)9110 return false;9111 return (Set.contains(A->getOption().getID()) ||9112 (A->getOption().getGroup().isValid() &&9113 Set.contains(A->getOption().getGroup().getID()))) &&9114 ShouldForwardForToolChain(A, TC);9115 };9116 9117 ArgStringList CmdArgs;9118 for (Action::OffloadKind Kind : {Action::OFK_Cuda, Action::OFK_OpenMP,9119 Action::OFK_HIP, Action::OFK_SYCL}) {9120 auto TCRange = C.getOffloadToolChains(Kind);9121 for (auto &I : llvm::make_range(TCRange)) {9122 const ToolChain *TC = I.second;9123 9124 // We do not use a bound architecture here so options passed only to a9125 // specific architecture via -Xarch_<cpu> will not be forwarded.9126 ArgStringList CompilerArgs;9127 ArgStringList LinkerArgs;9128 const DerivedArgList &ToolChainArgs =9129 C.getArgsForToolChain(TC, /*BoundArch=*/"", Kind);9130 for (Arg *A : ToolChainArgs) {9131 if (A->getOption().matches(OPT_Zlinker_input))9132 LinkerArgs.emplace_back(A->getValue());9133 else if (ShouldForward(CompilerOptions, A, *TC))9134 A->render(Args, CompilerArgs);9135 else if (ShouldForward(LinkerOptions, A, *TC))9136 A->render(Args, LinkerArgs);9137 }9138 9139 // If the user explicitly requested it via `--offload-arch` we should9140 // extract it from any static libraries if present.9141 for (StringRef Arg : ToolChainArgs.getAllArgValues(OPT_offload_arch_EQ))9142 CmdArgs.emplace_back(Args.MakeArgString("--should-extract=" + Arg));9143 9144 // If this is OpenMP the device linker will need `-lompdevice`.9145 if (Kind == Action::OFK_OpenMP && !Args.hasArg(OPT_no_offloadlib) &&9146 (TC->getTriple().isAMDGPU() || TC->getTriple().isNVPTX()))9147 LinkerArgs.emplace_back("-lompdevice");9148 9149 // Forward all of these to the appropriate toolchain.9150 for (StringRef Arg : CompilerArgs)9151 CmdArgs.push_back(Args.MakeArgString(9152 "--device-compiler=" + TC->getTripleString() + "=" + Arg));9153 for (StringRef Arg : LinkerArgs)9154 CmdArgs.push_back(Args.MakeArgString(9155 "--device-linker=" + TC->getTripleString() + "=" + Arg));9156 9157 // Forward the LTO mode relying on the Driver's parsing.9158 if (C.getDriver().getOffloadLTOMode() == LTOK_Full)9159 CmdArgs.push_back(Args.MakeArgString(9160 "--device-compiler=" + TC->getTripleString() + "=-flto=full"));9161 else if (C.getDriver().getOffloadLTOMode() == LTOK_Thin) {9162 CmdArgs.push_back(Args.MakeArgString(9163 "--device-compiler=" + TC->getTripleString() + "=-flto=thin"));9164 if (TC->getTriple().isAMDGPU()) {9165 CmdArgs.push_back(9166 Args.MakeArgString("--device-linker=" + TC->getTripleString() +9167 "=-plugin-opt=-force-import-all"));9168 CmdArgs.push_back(9169 Args.MakeArgString("--device-linker=" + TC->getTripleString() +9170 "=-plugin-opt=-avail-extern-to-local"));9171 CmdArgs.push_back(Args.MakeArgString(9172 "--device-linker=" + TC->getTripleString() +9173 "=-plugin-opt=-avail-extern-gv-in-addrspace-to-local=3"));9174 if (Kind == Action::OFK_OpenMP) {9175 CmdArgs.push_back(9176 Args.MakeArgString("--device-linker=" + TC->getTripleString() +9177 "=-plugin-opt=-amdgpu-internalize-symbols"));9178 }9179 }9180 }9181 }9182 }9183 9184 CmdArgs.push_back(9185 Args.MakeArgString("--host-triple=" + getToolChain().getTripleString()));9186 9187 // CMake hack, suppress passing verbose arguments for the special-case HIP9188 // non-RDC mode compilation. This confuses default CMake implicit linker9189 // argument parsing when the language is set to HIP and the system linker is9190 // also `ld.lld`.9191 if (Args.hasArg(options::OPT_v) && JA.getType() != types::TY_HIP_FATBIN)9192 CmdArgs.push_back("--wrapper-verbose");9193 if (Arg *A = Args.getLastArg(options::OPT_cuda_path_EQ))9194 CmdArgs.push_back(9195 Args.MakeArgString(Twine("--cuda-path=") + A->getValue()));9196 9197 // Construct the link job so we can wrap around it.9198 Linker->ConstructJob(C, JA, Output, Inputs, Args, LinkingOutput);9199 const auto &LinkCommand = C.getJobs().getJobs().back();9200 9201 // Forward -Xoffload-linker<-triple> arguments to the device link job.9202 for (Arg *A : Args.filtered(options::OPT_Xoffload_linker)) {9203 StringRef Val = A->getValue(0);9204 if (Val.empty())9205 CmdArgs.push_back(9206 Args.MakeArgString(Twine("--device-linker=") + A->getValue(1)));9207 else9208 CmdArgs.push_back(Args.MakeArgString(9209 "--device-linker=" +9210 ToolChain::getOpenMPTriple(Val.drop_front()).getTriple() + "=" +9211 A->getValue(1)));9212 }9213 Args.ClaimAllArgs(options::OPT_Xoffload_linker);9214 9215 // Embed bitcode instead of an object in JIT mode.9216 if (Args.hasFlag(options::OPT_fopenmp_target_jit,9217 options::OPT_fno_openmp_target_jit, false))9218 CmdArgs.push_back("--embed-bitcode");9219 9220 // Save temporary files created by the linker wrapper.9221 if (Args.hasArg(options::OPT_save_temps_EQ) ||9222 Args.hasArg(options::OPT_save_temps))9223 CmdArgs.push_back("--save-temps");9224 9225 // Pass in the C library for GPUs if present and not disabled.9226 if (Args.hasFlag(options::OPT_offloadlib, OPT_no_offloadlib, true) &&9227 !Args.hasArg(options::OPT_nostdlib, options::OPT_r,9228 options::OPT_nodefaultlibs, options::OPT_nolibc,9229 options::OPT_nogpulibc)) {9230 forAllAssociatedToolChains(C, JA, getToolChain(), [&](const ToolChain &TC) {9231 // The device C library is only available for NVPTX and AMDGPU targets9232 // and we only link it by default for OpenMP currently.9233 if ((!TC.getTriple().isNVPTX() && !TC.getTriple().isAMDGPU()) ||9234 !JA.isHostOffloading(Action::OFK_OpenMP))9235 return;9236 bool HasLibC = TC.getStdlibIncludePath().has_value();9237 if (HasLibC) {9238 CmdArgs.push_back(Args.MakeArgString(9239 "--device-linker=" + TC.getTripleString() + "=" + "-lc"));9240 CmdArgs.push_back(Args.MakeArgString(9241 "--device-linker=" + TC.getTripleString() + "=" + "-lm"));9242 }9243 auto HasCompilerRT = getToolChain().getVFS().exists(9244 TC.getCompilerRT(Args, "builtins", ToolChain::FT_Static));9245 if (HasCompilerRT)9246 CmdArgs.push_back(9247 Args.MakeArgString("--device-linker=" + TC.getTripleString() + "=" +9248 "-lclang_rt.builtins"));9249 bool HasFlangRT = HasCompilerRT && C.getDriver().IsFlangMode();9250 if (HasFlangRT)9251 CmdArgs.push_back(9252 Args.MakeArgString("--device-linker=" + TC.getTripleString() + "=" +9253 "-lflang_rt.runtime"));9254 });9255 }9256 9257 // Add the linker arguments to be forwarded by the wrapper.9258 CmdArgs.push_back(Args.MakeArgString(Twine("--linker-path=") +9259 LinkCommand->getExecutable()));9260 9261 // We use action type to differentiate two use cases of the linker wrapper.9262 // TY_Image for normal linker wrapper work.9263 // TY_HIP_FATBIN for HIP fno-gpu-rdc emitting a fat binary without wrapping.9264 assert(JA.getType() == types::TY_HIP_FATBIN ||9265 JA.getType() == types::TY_Image);9266 if (JA.getType() == types::TY_HIP_FATBIN) {9267 CmdArgs.push_back("--emit-fatbin-only");9268 CmdArgs.append({"-o", Output.getFilename()});9269 for (auto Input : Inputs)9270 CmdArgs.push_back(Input.getFilename());9271 } else9272 for (const char *LinkArg : LinkCommand->getArguments())9273 CmdArgs.push_back(LinkArg);9274 9275 addOffloadCompressArgs(Args, CmdArgs);9276 9277 if (Arg *A = Args.getLastArg(options::OPT_offload_jobs_EQ)) {9278 StringRef Val = A->getValue();9279 9280 if (Val.equals_insensitive("jobserver"))9281 CmdArgs.push_back(Args.MakeArgString("--wrapper-jobs=jobserver"));9282 else {9283 int NumThreads;9284 if (Val.getAsInteger(10, NumThreads) || NumThreads <= 0) {9285 C.getDriver().Diag(diag::err_drv_invalid_int_value)9286 << A->getAsString(Args) << Val;9287 } else {9288 CmdArgs.push_back(9289 Args.MakeArgString("--wrapper-jobs=" + Twine(NumThreads)));9290 }9291 }9292 }9293 9294 const char *Exec =9295 Args.MakeArgString(getToolChain().GetProgramPath("clang-linker-wrapper"));9296 9297 // Replace the executable and arguments of the link job with the9298 // wrapper.9299 LinkCommand->replaceExecutable(Exec);9300 LinkCommand->replaceArguments(CmdArgs);9301}9302