3477 lines · cpp
1//===--- CommonArgs.cpp - Args handling for multiple toolchains -*- 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/Driver/CommonArgs.h"10#include "Arch/AArch64.h"11#include "Arch/ARM.h"12#include "Arch/CSKY.h"13#include "Arch/LoongArch.h"14#include "Arch/M68k.h"15#include "Arch/Mips.h"16#include "Arch/PPC.h"17#include "Arch/RISCV.h"18#include "Arch/Sparc.h"19#include "Arch/SystemZ.h"20#include "Arch/VE.h"21#include "Arch/X86.h"22#include "HIPAMD.h"23#include "Hexagon.h"24#include "MSP430.h"25#include "Solaris.h"26#include "ToolChains/Cuda.h"27#include "clang/Basic/CodeGenOptions.h"28#include "clang/Config/config.h"29#include "clang/Driver/Action.h"30#include "clang/Driver/Compilation.h"31#include "clang/Driver/Driver.h"32#include "clang/Driver/InputInfo.h"33#include "clang/Driver/Job.h"34#include "clang/Driver/SanitizerArgs.h"35#include "clang/Driver/ToolChain.h"36#include "clang/Driver/Util.h"37#include "clang/Driver/XRayArgs.h"38#include "clang/Options/Options.h"39#include "llvm/ADT/STLExtras.h"40#include "llvm/ADT/SmallSet.h"41#include "llvm/ADT/SmallString.h"42#include "llvm/ADT/StringExtras.h"43#include "llvm/ADT/StringSwitch.h"44#include "llvm/ADT/Twine.h"45#include "llvm/BinaryFormat/Magic.h"46#include "llvm/Config/llvm-config.h"47#include "llvm/Option/Arg.h"48#include "llvm/Option/ArgList.h"49#include "llvm/Option/Option.h"50#include "llvm/Support/CodeGen.h"51#include "llvm/Support/Compression.h"52#include "llvm/Support/ErrorHandling.h"53#include "llvm/Support/FileSystem.h"54#include "llvm/Support/Path.h"55#include "llvm/Support/Process.h"56#include "llvm/Support/Program.h"57#include "llvm/Support/Threading.h"58#include "llvm/Support/VirtualFileSystem.h"59#include "llvm/Support/YAMLParser.h"60#include "llvm/TargetParser/Host.h"61#include "llvm/TargetParser/PPCTargetParser.h"62#include "llvm/TargetParser/TargetParser.h"63#include <optional>64 65using namespace clang::driver;66using namespace clang::driver::tools;67using namespace clang;68using namespace llvm::opt;69 70static bool useFramePointerForTargetByDefault(const llvm::opt::ArgList &Args,71 const llvm::Triple &Triple) {72 if (Args.hasArg(options::OPT_pg) && !Args.hasArg(options::OPT_mfentry))73 return true;74 75 if (Triple.isAndroid())76 return true;77 78 switch (Triple.getArch()) {79 case llvm::Triple::xcore:80 case llvm::Triple::wasm32:81 case llvm::Triple::wasm64:82 case llvm::Triple::msp430:83 // XCore never wants frame pointers, regardless of OS.84 // WebAssembly never wants frame pointers.85 return false;86 case llvm::Triple::ppc:87 case llvm::Triple::ppcle:88 case llvm::Triple::ppc64:89 case llvm::Triple::ppc64le:90 case llvm::Triple::riscv32:91 case llvm::Triple::riscv64:92 case llvm::Triple::sparc:93 case llvm::Triple::sparcel:94 case llvm::Triple::sparcv9:95 case llvm::Triple::amdgcn:96 case llvm::Triple::r600:97 case llvm::Triple::csky:98 case llvm::Triple::loongarch32:99 case llvm::Triple::loongarch64:100 case llvm::Triple::m68k:101 return !clang::driver::tools::areOptimizationsEnabled(Args);102 default:103 break;104 }105 106 if (Triple.isOSFuchsia() || Triple.isOSNetBSD()) {107 return !clang::driver::tools::areOptimizationsEnabled(Args);108 }109 110 if (Triple.isOSLinux() || Triple.isOSHurd()) {111 switch (Triple.getArch()) {112 // Don't use a frame pointer on linux if optimizing for certain targets.113 case llvm::Triple::arm:114 case llvm::Triple::armeb:115 case llvm::Triple::thumb:116 case llvm::Triple::thumbeb:117 case llvm::Triple::mips64:118 case llvm::Triple::mips64el:119 case llvm::Triple::mips:120 case llvm::Triple::mipsel:121 case llvm::Triple::systemz:122 case llvm::Triple::x86:123 case llvm::Triple::x86_64:124 return !clang::driver::tools::areOptimizationsEnabled(Args);125 default:126 return true;127 }128 }129 130 if (Triple.isOSWindows()) {131 switch (Triple.getArch()) {132 case llvm::Triple::x86:133 return !clang::driver::tools::areOptimizationsEnabled(Args);134 case llvm::Triple::x86_64:135 return Triple.isOSBinFormatMachO();136 case llvm::Triple::arm:137 case llvm::Triple::thumb:138 // Windows on ARM builds with FPO disabled to aid fast stack walking139 return true;140 default:141 // All other supported Windows ISAs use xdata unwind information, so frame142 // pointers are not generally useful.143 return false;144 }145 }146 147 if (arm::isARMEABIBareMetal(Triple))148 return false;149 150 return true;151}152 153static bool useLeafFramePointerForTargetByDefault(const llvm::Triple &Triple) {154 if (Triple.isAArch64() || Triple.isPS() || Triple.isVE() ||155 (Triple.isAndroid() && !Triple.isARM()))156 return false;157 158 if ((Triple.isARM() || Triple.isThumb()) && Triple.isOSBinFormatMachO())159 return false;160 161 return true;162}163 164static bool mustUseNonLeafFramePointerForTarget(const llvm::Triple &Triple) {165 switch (Triple.getArch()) {166 default:167 return false;168 case llvm::Triple::arm:169 case llvm::Triple::thumb:170 // ARM Darwin targets require a frame pointer to be always present to aid171 // offline debugging via backtraces.172 return Triple.isOSDarwin();173 }174}175 176// True if a target-specific option requires the frame chain to be preserved,177// even if new frame records are not created.178static bool mustMaintainValidFrameChain(const llvm::opt::ArgList &Args,179 const llvm::Triple &Triple) {180 switch (Triple.getArch()) {181 default:182 return false;183 case llvm::Triple::arm:184 case llvm::Triple::armeb:185 case llvm::Triple::thumb:186 case llvm::Triple::thumbeb:187 // For 32-bit Arm, the -mframe-chain=aapcs and -mframe-chain=aapcs+leaf188 // options require the frame pointer register to be reserved (or point to a189 // new AAPCS-compilant frame record), even with -fno-omit-frame-pointer.190 if (Arg *A = Args.getLastArg(options::OPT_mframe_chain)) {191 StringRef V = A->getValue();192 return V != "none";193 }194 return false;195 196 case llvm::Triple::aarch64:197 // Arm64 Windows requires that the frame chain is valid, as there is no198 // way to indicate during a stack walk that a frame has used the frame199 // pointer as a general purpose register.200 return Triple.isOSWindows();201 }202}203 204// True if a target-specific option causes -fno-omit-frame-pointer to also205// cause frame records to be created in leaf functions.206static bool framePointerImpliesLeafFramePointer(const llvm::opt::ArgList &Args,207 const llvm::Triple &Triple) {208 if (Triple.isARM() || Triple.isThumb()) {209 // For 32-bit Arm, the -mframe-chain=aapcs+leaf option causes the210 // -fno-omit-frame-pointer optiion to imply -mno-omit-leaf-frame-pointer,211 // but does not by itself imply either option.212 if (Arg *A = Args.getLastArg(options::OPT_mframe_chain)) {213 StringRef V = A->getValue();214 return V == "aapcs+leaf";215 }216 return false;217 }218 return false;219}220 221clang::CodeGenOptions::FramePointerKind222getFramePointerKind(const llvm::opt::ArgList &Args,223 const llvm::Triple &Triple) {224 // There are four things to consider here:225 // * Should a frame record be created for non-leaf functions?226 // * Should a frame record be created for leaf functions?227 // * Is the frame pointer register reserved in non-leaf functions?228 // i.e. must it always point to either a new, valid frame record or be229 // un-modified?230 // * Is the frame pointer register reserved in leaf functions?231 //232 // Not all combinations of these are valid:233 // * It's not useful to have leaf frame records without non-leaf ones.234 // * It's not useful to have frame records without reserving the frame235 // pointer.236 //237 // | Frame Setup | Reg Reserved |238 // |-----------------|-----------------|239 // | Non-leaf | Leaf | Non-Leaf | Leaf |240 // |----------|------|----------|------|241 // | N | N | N | N | FramePointerKind::None242 // | N | N | N | Y | Invalid243 // | N | N | Y | N | Invalid244 // | N | N | Y | Y | FramePointerKind::Reserved245 // | N | Y | N | N | Invalid246 // | N | Y | N | Y | Invalid247 // | N | Y | Y | N | Invalid248 // | N | Y | Y | Y | Invalid249 // | Y | N | N | N | Invalid250 // | Y | N | N | Y | Invalid251 // | Y | N | Y | N | FramePointerKind::NonLeafNoReserve252 // | Y | N | Y | Y | FramePointerKind::NonLeaf253 // | Y | Y | N | N | Invalid254 // | Y | Y | N | Y | Invalid255 // | Y | Y | Y | N | Invalid256 // | Y | Y | Y | Y | FramePointerKind::All257 //258 // The FramePointerKind::Reserved case is currently only reachable for Arm,259 // which has the -mframe-chain= option which can (in combination with260 // -fno-omit-frame-pointer) specify that the frame chain must be valid,261 // without requiring new frame records to be created.262 263 bool DefaultFP = useFramePointerForTargetByDefault(Args, Triple);264 bool EnableFP = mustUseNonLeafFramePointerForTarget(Triple) ||265 Args.hasFlag(options::OPT_fno_omit_frame_pointer,266 options::OPT_fomit_frame_pointer, DefaultFP);267 268 bool DefaultLeafFP =269 useLeafFramePointerForTargetByDefault(Triple) ||270 (EnableFP && framePointerImpliesLeafFramePointer(Args, Triple));271 bool EnableLeafFP =272 Args.hasFlag(options::OPT_mno_omit_leaf_frame_pointer,273 options::OPT_momit_leaf_frame_pointer, DefaultLeafFP);274 275 bool FPRegReserved = Args.hasFlag(options::OPT_mreserve_frame_pointer_reg,276 options::OPT_mno_reserve_frame_pointer_reg,277 mustMaintainValidFrameChain(Args, Triple));278 279 if (EnableFP) {280 if (EnableLeafFP)281 return clang::CodeGenOptions::FramePointerKind::All;282 283 if (FPRegReserved)284 return clang::CodeGenOptions::FramePointerKind::NonLeaf;285 286 return clang::CodeGenOptions::FramePointerKind::NonLeafNoReserve;287 }288 if (FPRegReserved)289 return clang::CodeGenOptions::FramePointerKind::Reserved;290 return clang::CodeGenOptions::FramePointerKind::None;291}292 293static void renderRpassOptions(const ArgList &Args, ArgStringList &CmdArgs,294 const StringRef PluginOptPrefix) {295 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_EQ))296 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +297 "-pass-remarks=" + A->getValue()));298 299 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_missed_EQ))300 CmdArgs.push_back(Args.MakeArgString(301 Twine(PluginOptPrefix) + "-pass-remarks-missed=" + A->getValue()));302 303 if (const Arg *A = Args.getLastArg(options::OPT_Rpass_analysis_EQ))304 CmdArgs.push_back(Args.MakeArgString(305 Twine(PluginOptPrefix) + "-pass-remarks-analysis=" + A->getValue()));306}307 308static void renderRemarksOptions(const ArgList &Args, ArgStringList &CmdArgs,309 const llvm::Triple &Triple,310 const InputInfo &Input,311 const InputInfo &Output,312 const StringRef PluginOptPrefix) {313 StringRef Format = "yaml";314 if (const Arg *A = Args.getLastArg(options::OPT_fsave_optimization_record_EQ))315 Format = A->getValue();316 317 SmallString<128> F;318 if (const Arg *A =319 Args.getLastArg(options::OPT_foptimization_record_file_EQ)) {320 F = A->getValue();321 F += ".";322 } else if (const Arg *A = Args.getLastArg(options::OPT_dumpdir)) {323 F = A->getValue();324 } else if (Output.isFilename()) {325 F = Output.getFilename();326 F += ".";327 }328 329 assert(!F.empty() && "Cannot determine remarks output name.");330 // Append "opt.ld.<format>" to the end of the file name.331 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +332 "opt-remarks-filename=" + F + "opt.ld." +333 Format));334 335 if (const Arg *A =336 Args.getLastArg(options::OPT_foptimization_record_passes_EQ))337 CmdArgs.push_back(Args.MakeArgString(338 Twine(PluginOptPrefix) + "opt-remarks-passes=" + A->getValue()));339 340 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +341 "opt-remarks-format=" + Format.data()));342}343 344static void renderRemarksHotnessOptions(const ArgList &Args,345 ArgStringList &CmdArgs,346 const StringRef PluginOptPrefix) {347 if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,348 options::OPT_fno_diagnostics_show_hotness, false))349 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +350 "opt-remarks-with-hotness"));351 352 if (const Arg *A =353 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ))354 CmdArgs.push_back(355 Args.MakeArgString(Twine(PluginOptPrefix) +356 "opt-remarks-hotness-threshold=" + A->getValue()));357}358 359static bool shouldIgnoreUnsupportedTargetFeature(const Arg &TargetFeatureArg,360 llvm::Triple T,361 StringRef Processor) {362 // Warn no-cumode for AMDGCN processors not supporing WGP mode.363 if (!T.isAMDGPU())364 return false;365 auto GPUKind = T.isAMDGCN() ? llvm::AMDGPU::parseArchAMDGCN(Processor)366 : llvm::AMDGPU::parseArchR600(Processor);367 auto GPUFeatures = T.isAMDGCN() ? llvm::AMDGPU::getArchAttrAMDGCN(GPUKind)368 : llvm::AMDGPU::getArchAttrR600(GPUKind);369 if (GPUFeatures & llvm::AMDGPU::FEATURE_WGP)370 return false;371 return TargetFeatureArg.getOption().matches(options::OPT_mno_cumode);372}373 374void tools::addPathIfExists(const Driver &D, const Twine &Path,375 ToolChain::path_list &Paths) {376 if (D.getVFS().exists(Path))377 Paths.push_back(Path.str());378}379 380void tools::handleTargetFeaturesGroup(const Driver &D,381 const llvm::Triple &Triple,382 const ArgList &Args,383 std::vector<StringRef> &Features,384 OptSpecifier Group) {385 std::set<StringRef> Warned;386 for (const Arg *A : Args.filtered(Group)) {387 StringRef Name = A->getOption().getName();388 A->claim();389 390 // Skip over "-m".391 assert(Name.starts_with("m") && "Invalid feature name.");392 Name = Name.substr(1);393 394 auto Proc = getCPUName(D, Args, Triple);395 if (shouldIgnoreUnsupportedTargetFeature(*A, Triple, Proc)) {396 if (Warned.count(Name) == 0) {397 D.getDiags().Report(398 clang::diag::warn_drv_unsupported_option_for_processor)399 << A->getAsString(Args) << Proc;400 Warned.insert(Name);401 }402 continue;403 }404 405 bool IsNegative = Name.consume_front("no-");406 407 Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));408 }409}410 411SmallVector<StringRef>412tools::unifyTargetFeatures(ArrayRef<StringRef> Features) {413 // Only add a feature if it hasn't been seen before starting from the end.414 SmallVector<StringRef> UnifiedFeatures;415 llvm::DenseSet<StringRef> UsedFeatures;416 for (StringRef Feature : llvm::reverse(Features)) {417 if (UsedFeatures.insert(Feature.drop_front()).second)418 UnifiedFeatures.insert(UnifiedFeatures.begin(), Feature);419 }420 421 return UnifiedFeatures;422}423 424void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,425 const char *ArgName, const char *EnvVar) {426 const char *DirList = ::getenv(EnvVar);427 bool CombinedArg = false;428 429 if (!DirList)430 return; // Nothing to do.431 432 StringRef Name(ArgName);433 if (Name == "-I" || Name == "-L" || Name.empty())434 CombinedArg = true;435 436 StringRef Dirs(DirList);437 if (Dirs.empty()) // Empty string should not add '.'.438 return;439 440 StringRef::size_type Delim;441 while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {442 if (Delim == 0) { // Leading colon.443 if (CombinedArg) {444 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));445 } else {446 CmdArgs.push_back(ArgName);447 CmdArgs.push_back(".");448 }449 } else {450 if (CombinedArg) {451 CmdArgs.push_back(452 Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));453 } else {454 CmdArgs.push_back(ArgName);455 CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));456 }457 }458 Dirs = Dirs.substr(Delim + 1);459 }460 461 if (Dirs.empty()) { // Trailing colon.462 if (CombinedArg) {463 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));464 } else {465 CmdArgs.push_back(ArgName);466 CmdArgs.push_back(".");467 }468 } else { // Add the last path.469 if (CombinedArg) {470 CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));471 } else {472 CmdArgs.push_back(ArgName);473 CmdArgs.push_back(Args.MakeArgString(Dirs));474 }475 }476}477 478void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,479 const ArgList &Args, ArgStringList &CmdArgs,480 const JobAction &JA) {481 const Driver &D = TC.getDriver();482 483 // Add extra linker input arguments which are not treated as inputs484 // (constructed via -Xarch_).485 Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);486 487 // LIBRARY_PATH are included before user inputs and only supported on native488 // toolchains.489 if (!TC.isCrossCompiling())490 addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");491 492 for (const auto &II : Inputs) {493 // If the current tool chain refers to an OpenMP offloading host, we494 // should ignore inputs that refer to OpenMP offloading devices -495 // they will be embedded according to a proper linker script.496 if (auto *IA = II.getAction())497 if ((JA.isHostOffloading(Action::OFK_OpenMP) &&498 IA->isDeviceOffloading(Action::OFK_OpenMP)))499 continue;500 501 if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))502 // Don't try to pass LLVM inputs unless we have native support.503 D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();504 505 // Add filenames immediately.506 if (II.isFilename()) {507 CmdArgs.push_back(II.getFilename());508 continue;509 }510 511 // In some error cases, the input could be Nothing; skip those.512 if (II.isNothing())513 continue;514 515 // Otherwise, this is a linker input argument.516 const Arg &A = II.getInputArg();517 518 // Handle reserved library options.519 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))520 TC.AddCXXStdlibLibArgs(Args, CmdArgs);521 else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))522 TC.AddCCKextLibArgs(Args, CmdArgs);523 // Do not pass OPT_rpath to linker in AIX524 else if (A.getOption().matches(options::OPT_rpath) &&525 TC.getTriple().isOSAIX())526 continue;527 else528 A.renderAsInput(Args, CmdArgs);529 }530 if (const Arg *A = Args.getLastArg(options::OPT_fveclib)) {531 const llvm::Triple &Triple = TC.getTriple();532 StringRef V = A->getValue();533 if (V == "ArmPL" && (Triple.isOSLinux() || Triple.isOSDarwin())) {534 // To support -fveclib=ArmPL we need to link against libamath. Some of the535 // libamath functions depend on libm, at the same time, libamath exports536 // its own implementation of some of the libm functions. These are faster537 // and potentially less accurate implementations, hence we need to be538 // careful what is being linked in. Since here we are interested only in539 // the subset of libamath functions that is covered by the veclib540 // mappings, we need to prioritize libm functions by putting -lm before541 // -lamath (and then -lm again, to fulfill libamath requirements).542 //543 // Therefore we need to do the following:544 //545 // 1. On Linux, link only when actually needed.546 //547 // 2. Prefer libm functions over libamath (when no -nostdlib in use).548 //549 // 3. Link against libm to resolve libamath dependencies.550 //551 if (Triple.isOSLinux()) {552 CmdArgs.push_back(Args.MakeArgString("--push-state"));553 CmdArgs.push_back(Args.MakeArgString("--as-needed"));554 }555 if (!Args.hasArg(options::OPT_nostdlib))556 CmdArgs.push_back(Args.MakeArgString("-lm"));557 CmdArgs.push_back(Args.MakeArgString("-lamath"));558 if (!Args.hasArg(options::OPT_nostdlib))559 CmdArgs.push_back(Args.MakeArgString("-lm"));560 if (Triple.isOSLinux())561 CmdArgs.push_back(Args.MakeArgString("--pop-state"));562 addArchSpecificRPath(TC, Args, CmdArgs);563 }564 }565}566 567const char *tools::getLDMOption(const llvm::Triple &T, const ArgList &Args) {568 switch (T.getArch()) {569 case llvm::Triple::x86:570 if (T.isOSIAMCU())571 return "elf_iamcu";572 return "elf_i386";573 case llvm::Triple::aarch64:574 if (T.isOSManagarm())575 return "aarch64managarm";576 else if (aarch64::isAArch64BareMetal(T))577 return "aarch64elf";578 return "aarch64linux";579 case llvm::Triple::aarch64_be:580 if (aarch64::isAArch64BareMetal(T))581 return "aarch64elfb";582 return "aarch64linuxb";583 case llvm::Triple::arm:584 case llvm::Triple::thumb:585 case llvm::Triple::armeb:586 case llvm::Triple::thumbeb: {587 bool IsBigEndian = tools::arm::isARMBigEndian(T, Args);588 if (arm::isARMEABIBareMetal(T))589 return IsBigEndian ? "armelfb" : "armelf";590 return IsBigEndian ? "armelfb_linux_eabi" : "armelf_linux_eabi";591 }592 case llvm::Triple::m68k:593 return "m68kelf";594 case llvm::Triple::ppc:595 if (T.isOSLinux())596 return "elf32ppclinux";597 return "elf32ppc";598 case llvm::Triple::ppcle:599 if (T.isOSLinux())600 return "elf32lppclinux";601 return "elf32lppc";602 case llvm::Triple::ppc64:603 return "elf64ppc";604 case llvm::Triple::ppc64le:605 return "elf64lppc";606 case llvm::Triple::riscv32:607 return "elf32lriscv";608 case llvm::Triple::riscv64:609 return "elf64lriscv";610 case llvm::Triple::sparc:611 case llvm::Triple::sparcel:612 return "elf32_sparc";613 case llvm::Triple::sparcv9:614 return "elf64_sparc";615 case llvm::Triple::loongarch32:616 return "elf32loongarch";617 case llvm::Triple::loongarch64:618 return "elf64loongarch";619 case llvm::Triple::mips:620 return "elf32btsmip";621 case llvm::Triple::mipsel:622 return "elf32ltsmip";623 case llvm::Triple::mips64:624 if (tools::mips::hasMipsAbiArg(Args, "n32") || T.isABIN32())625 return "elf32btsmipn32";626 return "elf64btsmip";627 case llvm::Triple::mips64el:628 if (tools::mips::hasMipsAbiArg(Args, "n32") || T.isABIN32())629 return "elf32ltsmipn32";630 return "elf64ltsmip";631 case llvm::Triple::systemz:632 return "elf64_s390";633 case llvm::Triple::x86_64:634 if (T.isX32())635 return "elf32_x86_64";636 return "elf_x86_64";637 case llvm::Triple::ve:638 return "elf64ve";639 case llvm::Triple::csky:640 return "cskyelf_linux";641 default:642 return nullptr;643 }644}645 646void tools::addLinkerCompressDebugSectionsOption(647 const ToolChain &TC, const llvm::opt::ArgList &Args,648 llvm::opt::ArgStringList &CmdArgs) {649 // GNU ld supports --compress-debug-sections=none|zlib|zlib-gnu|zlib-gabi650 // whereas zlib is an alias to zlib-gabi and zlib-gnu is obsoleted. Therefore651 // -gz=none|zlib are translated to --compress-debug-sections=none|zlib. -gz652 // is not translated since ld --compress-debug-sections option requires an653 // argument.654 if (const Arg *A = Args.getLastArg(options::OPT_gz_EQ)) {655 StringRef V = A->getValue();656 if (V == "none" || V == "zlib" || V == "zstd")657 CmdArgs.push_back(Args.MakeArgString("--compress-debug-sections=" + V));658 else659 TC.getDriver().Diag(diag::err_drv_unsupported_option_argument)660 << A->getSpelling() << V;661 }662}663 664void tools::AddTargetFeature(const ArgList &Args,665 std::vector<StringRef> &Features,666 OptSpecifier OnOpt, OptSpecifier OffOpt,667 StringRef FeatureName) {668 if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {669 if (A->getOption().matches(OnOpt))670 Features.push_back(Args.MakeArgString("+" + FeatureName));671 else672 Features.push_back(Args.MakeArgString("-" + FeatureName));673 }674}675 676/// Get the (LLVM) name of the AMDGPU gpu we are targeting.677static std::string getAMDGPUTargetGPU(const llvm::Triple &T,678 const ArgList &Args) {679 Arg *MArch = Args.getLastArg(options::OPT_march_EQ);680 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {681 auto GPUName = getProcessorFromTargetID(T, A->getValue());682 return llvm::StringSwitch<std::string>(GPUName)683 .Cases({"rv630", "rv635"}, "r600")684 .Cases({"rv610", "rv620", "rs780"}, "rs880")685 .Case("rv740", "rv770")686 .Case("palm", "cedar")687 .Cases({"sumo", "sumo2"}, "sumo")688 .Case("hemlock", "cypress")689 .Case("aruba", "cayman")690 .Default(GPUName.str());691 }692 if (MArch)693 return getProcessorFromTargetID(T, MArch->getValue()).str();694 return "";695}696 697static std::string getLanaiTargetCPU(const ArgList &Args) {698 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {699 return A->getValue();700 }701 return "";702}703 704/// Get the (LLVM) name of the WebAssembly cpu we are targeting.705static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {706 // If we have -mcpu=, use that.707 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {708 StringRef CPU = A->getValue();709 710#ifdef __wasm__711 // Handle "native" by examining the host. "native" isn't meaningful when712 // cross compiling, so only support this when the host is also WebAssembly.713 if (CPU == "native")714 return llvm::sys::getHostCPUName();715#endif716 717 return CPU;718 }719 720 return "generic";721}722 723std::string tools::getCPUName(const Driver &D, const ArgList &Args,724 const llvm::Triple &T, bool FromAs) {725 Arg *A;726 727 switch (T.getArch()) {728 default:729 return "";730 731 case llvm::Triple::aarch64:732 case llvm::Triple::aarch64_32:733 case llvm::Triple::aarch64_be:734 return aarch64::getAArch64TargetCPU(Args, T, A);735 736 case llvm::Triple::arm:737 case llvm::Triple::armeb:738 case llvm::Triple::thumb:739 case llvm::Triple::thumbeb: {740 StringRef MArch, MCPU;741 arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);742 return arm::getARMTargetCPU(MCPU, MArch, T);743 }744 745 case llvm::Triple::avr:746 if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))747 return A->getValue();748 return "";749 750 case llvm::Triple::m68k:751 return m68k::getM68kTargetCPU(Args);752 753 case llvm::Triple::mips:754 case llvm::Triple::mipsel:755 case llvm::Triple::mips64:756 case llvm::Triple::mips64el: {757 StringRef CPUName;758 StringRef ABIName;759 mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);760 return std::string(CPUName);761 }762 763 case llvm::Triple::nvptx:764 case llvm::Triple::nvptx64:765 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))766 return A->getValue();767 return "";768 769 case llvm::Triple::ppc:770 case llvm::Triple::ppcle:771 case llvm::Triple::ppc64:772 case llvm::Triple::ppc64le:773 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))774 return std::string(775 llvm::PPC::getNormalizedPPCTargetCPU(T, A->getValue()));776 return std::string(llvm::PPC::getNormalizedPPCTargetCPU(T));777 778 case llvm::Triple::csky:779 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))780 return A->getValue();781 else if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))782 return A->getValue();783 else784 return "ck810";785 case llvm::Triple::riscv32:786 case llvm::Triple::riscv64:787 return riscv::getRISCVTargetCPU(Args, T);788 789 case llvm::Triple::bpfel:790 case llvm::Triple::bpfeb:791 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))792 return A->getValue();793 return "";794 795 case llvm::Triple::sparc:796 case llvm::Triple::sparcel:797 case llvm::Triple::sparcv9:798 return sparc::getSparcTargetCPU(D, Args, T);799 800 case llvm::Triple::x86:801 case llvm::Triple::x86_64:802 return x86::getX86TargetCPU(D, Args, T);803 804 case llvm::Triple::hexagon:805 return "hexagon" +806 toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();807 808 case llvm::Triple::lanai:809 return getLanaiTargetCPU(Args);810 811 case llvm::Triple::systemz:812 return systemz::getSystemZTargetCPU(Args, T);813 814 case llvm::Triple::r600:815 case llvm::Triple::amdgcn:816 return getAMDGPUTargetGPU(T, Args);817 818 case llvm::Triple::wasm32:819 case llvm::Triple::wasm64:820 return std::string(getWebAssemblyTargetCPU(Args));821 822 case llvm::Triple::loongarch32:823 case llvm::Triple::loongarch64:824 return loongarch::getLoongArchTargetCPU(Args, T);825 826 case llvm::Triple::xtensa:827 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))828 return A->getValue();829 return "";830 }831}832 833static void getWebAssemblyTargetFeatures(const Driver &D,834 const llvm::Triple &Triple,835 const ArgList &Args,836 std::vector<StringRef> &Features) {837 handleTargetFeaturesGroup(D, Triple, Args, Features,838 options::OPT_m_wasm_Features_Group);839}840 841void tools::getTargetFeatures(const Driver &D, const llvm::Triple &Triple,842 const ArgList &Args, ArgStringList &CmdArgs,843 bool ForAS, bool IsAux) {844 std::vector<StringRef> Features;845 switch (Triple.getArch()) {846 default:847 break;848 case llvm::Triple::mips:849 case llvm::Triple::mipsel:850 case llvm::Triple::mips64:851 case llvm::Triple::mips64el:852 mips::getMIPSTargetFeatures(D, Triple, Args, Features);853 break;854 case llvm::Triple::arm:855 case llvm::Triple::armeb:856 case llvm::Triple::thumb:857 case llvm::Triple::thumbeb:858 arm::getARMTargetFeatures(D, Triple, Args, Features, ForAS);859 break;860 case llvm::Triple::ppc:861 case llvm::Triple::ppcle:862 case llvm::Triple::ppc64:863 case llvm::Triple::ppc64le:864 ppc::getPPCTargetFeatures(D, Triple, Args, Features);865 break;866 case llvm::Triple::riscv32:867 case llvm::Triple::riscv64:868 riscv::getRISCVTargetFeatures(D, Triple, Args, Features);869 break;870 case llvm::Triple::systemz:871 systemz::getSystemZTargetFeatures(D, Args, Features);872 break;873 case llvm::Triple::aarch64:874 case llvm::Triple::aarch64_32:875 case llvm::Triple::aarch64_be:876 aarch64::getAArch64TargetFeatures(D, Triple, Args, Features, ForAS);877 break;878 case llvm::Triple::x86:879 case llvm::Triple::x86_64:880 x86::getX86TargetFeatures(D, Triple, Args, Features);881 break;882 case llvm::Triple::hexagon:883 hexagon::getHexagonTargetFeatures(D, Triple, Args, Features);884 break;885 case llvm::Triple::wasm32:886 case llvm::Triple::wasm64:887 getWebAssemblyTargetFeatures(D, Triple, Args, Features);888 break;889 case llvm::Triple::sparc:890 case llvm::Triple::sparcel:891 case llvm::Triple::sparcv9:892 sparc::getSparcTargetFeatures(D, Triple, Args, Features);893 break;894 case llvm::Triple::r600:895 case llvm::Triple::amdgcn:896 amdgpu::getAMDGPUTargetFeatures(D, Triple, Args, Features);897 break;898 case llvm::Triple::nvptx:899 case llvm::Triple::nvptx64:900 NVPTX::getNVPTXTargetFeatures(D, Triple, Args, Features);901 break;902 case llvm::Triple::m68k:903 m68k::getM68kTargetFeatures(D, Triple, Args, Features);904 break;905 case llvm::Triple::msp430:906 msp430::getMSP430TargetFeatures(D, Args, Features);907 break;908 case llvm::Triple::ve:909 ve::getVETargetFeatures(D, Args, Features);910 break;911 case llvm::Triple::csky:912 csky::getCSKYTargetFeatures(D, Triple, Args, CmdArgs, Features);913 break;914 case llvm::Triple::loongarch32:915 case llvm::Triple::loongarch64:916 loongarch::getLoongArchTargetFeatures(D, Triple, Args, Features);917 break;918 }919 920 for (auto Feature : unifyTargetFeatures(Features)) {921 CmdArgs.push_back(IsAux ? "-aux-target-feature" : "-target-feature");922 CmdArgs.push_back(Feature.data());923 }924}925 926llvm::StringRef tools::getLTOParallelism(const ArgList &Args, const Driver &D) {927 Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);928 if (!LtoJobsArg)929 return {};930 if (!llvm::get_threadpool_strategy(LtoJobsArg->getValue()))931 D.Diag(diag::err_drv_invalid_int_value)932 << LtoJobsArg->getAsString(Args) << LtoJobsArg->getValue();933 return LtoJobsArg->getValue();934}935 936// PS4/PS5 uses -ffunction-sections and -fdata-sections by default.937bool tools::isUseSeparateSections(const llvm::Triple &Triple) {938 return Triple.isPS();939}940 941bool tools::isTLSDESCEnabled(const ToolChain &TC,942 const llvm::opt::ArgList &Args) {943 const llvm::Triple &Triple = TC.getEffectiveTriple();944 Arg *A = Args.getLastArg(options::OPT_mtls_dialect_EQ);945 if (!A)946 return Triple.hasDefaultTLSDESC();947 StringRef V = A->getValue();948 bool SupportedArgument = false, EnableTLSDESC = false;949 bool Unsupported = !Triple.isOSBinFormatELF();950 if (Triple.isLoongArch() || Triple.isRISCV()) {951 SupportedArgument = V == "desc" || V == "trad";952 EnableTLSDESC = V == "desc";953 } else if (Triple.isX86()) {954 SupportedArgument = V == "gnu" || V == "gnu2";955 EnableTLSDESC = V == "gnu2";956 } else {957 Unsupported = true;958 }959 if (Unsupported) {960 TC.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)961 << A->getSpelling() << Triple.getTriple();962 } else if (!SupportedArgument) {963 TC.getDriver().Diag(diag::err_drv_unsupported_option_argument_for_target)964 << A->getSpelling() << V << Triple.getTriple();965 }966 return EnableTLSDESC;967}968 969void tools::addDTLTOOptions(const ToolChain &ToolChain, const ArgList &Args,970 llvm::opt::ArgStringList &CmdArgs) {971 if (Arg *A = Args.getLastArg(options::OPT_fthinlto_distributor_EQ)) {972 CmdArgs.push_back(973 Args.MakeArgString("--thinlto-distributor=" + Twine(A->getValue())));974 const Driver &D = ToolChain.getDriver();975 CmdArgs.push_back(Args.MakeArgString("--thinlto-remote-compiler=" +976 Twine(D.getClangProgramPath())));977 if (auto *PA = D.getPrependArg())978 CmdArgs.push_back(Args.MakeArgString(979 "--thinlto-remote-compiler-prepend-arg=" + Twine(PA)));980 981 for (const auto &A :982 Args.getAllArgValues(options::OPT_Xthinlto_distributor_EQ))983 CmdArgs.push_back(Args.MakeArgString("--thinlto-distributor-arg=" + A));984 }985}986 987void tools::addLTOOptions(const ToolChain &ToolChain, const ArgList &Args,988 ArgStringList &CmdArgs, const InputInfo &Output,989 const InputInfoList &Inputs, bool IsThinLTO) {990 const llvm::Triple &Triple = ToolChain.getTriple();991 const bool IsOSAIX = Triple.isOSAIX();992 const bool IsAMDGCN = Triple.isAMDGCN();993 StringRef Linker = Args.getLastArgValue(options::OPT_fuse_ld_EQ);994 const char *LinkerPath = Args.MakeArgString(ToolChain.GetLinkerPath());995 const Driver &D = ToolChain.getDriver();996 const bool IsFatLTO = Args.hasFlag(options::OPT_ffat_lto_objects,997 options::OPT_fno_fat_lto_objects, false);998 const bool IsUnifiedLTO = Args.hasArg(options::OPT_funified_lto);999 1000 assert(!Inputs.empty() && "Must have at least one input.");1001 1002 auto Input = llvm::find_if(1003 Inputs, [](const InputInfo &II) -> bool { return II.isFilename(); });1004 if (Input == Inputs.end()) {1005 // For a very rare case, all of the inputs to the linker are1006 // InputArg. If that happens, just use the first InputInfo.1007 Input = Inputs.begin();1008 }1009 1010 if (Linker != "lld" && Linker != "lld-link" &&1011 llvm::sys::path::filename(LinkerPath) != "ld.lld" &&1012 llvm::sys::path::stem(LinkerPath) != "ld.lld" && !Triple.isOSOpenBSD()) {1013 // Tell the linker to load the plugin. This has to come before1014 // AddLinkerInputs as gold requires -plugin and AIX ld requires -bplugin to1015 // come before any -plugin-opt/-bplugin_opt that -Wl might forward.1016 const char *PluginPrefix = IsOSAIX ? "-bplugin:" : "";1017 const char *PluginName = IsOSAIX ? "/libLTO" : "/LLVMgold";1018 1019 if (!IsOSAIX)1020 CmdArgs.push_back("-plugin");1021 1022#if defined(_WIN32)1023 const char *Suffix = ".dll";1024#elif defined(__APPLE__)1025 const char *Suffix = ".dylib";1026#else1027 const char *Suffix = ".so";1028#endif1029 1030 SmallString<1024> Plugin;1031 llvm::sys::path::native(Twine(D.Dir) +1032 "/../" CLANG_INSTALL_LIBDIR_BASENAME +1033 PluginName + Suffix,1034 Plugin);1035 CmdArgs.push_back(Args.MakeArgString(Twine(PluginPrefix) + Plugin));1036 } else {1037 // Tell LLD to find and use .llvm.lto section in regular relocatable object1038 // files1039 if (IsFatLTO)1040 CmdArgs.push_back("--fat-lto-objects");1041 1042 if (Args.hasArg(options::OPT_flto_partitions_EQ)) {1043 int Value = 0;1044 StringRef A = Args.getLastArgValue(options::OPT_flto_partitions_EQ, "8");1045 if (A.getAsInteger(10, Value) || (Value < 1)) {1046 Arg *Arg = Args.getLastArg(options::OPT_flto_partitions_EQ);1047 D.Diag(diag::err_drv_invalid_int_value)1048 << Arg->getAsString(Args) << Arg->getValue();1049 }1050 CmdArgs.push_back(Args.MakeArgString("--lto-partitions=" + A));1051 }1052 }1053 1054 const char *PluginOptPrefix = IsOSAIX ? "-bplugin_opt:" : "-plugin-opt=";1055 const char *ExtraDash = IsOSAIX ? "-" : "";1056 const char *ParallelismOpt = IsOSAIX ? "-threads=" : "jobs=";1057 1058 // Note, this solution is far from perfect, better to encode it into IR1059 // metadata, but this may not be worth it, since it looks like aranges is on1060 // the way out.1061 if (Args.hasArg(options::OPT_gdwarf_aranges)) {1062 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +1063 "-generate-arange-section"));1064 }1065 1066 // Pass vector library arguments to LTO.1067 Arg *ArgVecLib = Args.getLastArg(options::OPT_fveclib);1068 if (ArgVecLib && ArgVecLib->getNumValues() == 1) {1069 // Map the vector library names from clang front-end to opt front-end. The1070 // values are taken from the TargetLibraryInfo class command line options.1071 std::optional<StringRef> OptVal =1072 llvm::StringSwitch<std::optional<StringRef>>(ArgVecLib->getValue())1073 .Case("Accelerate", "Accelerate")1074 .Case("libmvec", "LIBMVEC")1075 .Case("AMDLIBM", "AMDLIBM")1076 .Case("MASSV", "MASSV")1077 .Case("SVML", "SVML")1078 .Case("SLEEF", "sleefgnuabi")1079 .Case("Darwin_libsystem_m", "Darwin_libsystem_m")1080 .Case("ArmPL", "ArmPL")1081 .Case("none", "none")1082 .Default(std::nullopt);1083 1084 if (OptVal)1085 CmdArgs.push_back(Args.MakeArgString(1086 Twine(PluginOptPrefix) + "-vector-library=" + OptVal.value()));1087 }1088 1089 // Try to pass driver level flags relevant to LTO code generation down to1090 // the plugin.1091 1092 // Handle flags for selecting CPU variants.1093 std::string CPU = getCPUName(D, Args, Triple);1094 if (!CPU.empty())1095 CmdArgs.push_back(1096 Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash + "mcpu=" + CPU));1097 1098 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {1099 // The optimization level matches1100 // CompilerInvocation.cpp:getOptimizationLevel().1101 StringRef OOpt;1102 if (A->getOption().matches(options::OPT_O4) ||1103 A->getOption().matches(options::OPT_Ofast))1104 OOpt = "3";1105 else if (A->getOption().matches(options::OPT_O)) {1106 OOpt = A->getValue();1107 if (OOpt == "g")1108 OOpt = "1";1109 else if (OOpt == "s" || OOpt == "z")1110 OOpt = "2";1111 } else if (A->getOption().matches(options::OPT_O0))1112 OOpt = "0";1113 if (!OOpt.empty()) {1114 CmdArgs.push_back(1115 Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash + "O" + OOpt));1116 if (IsAMDGCN)1117 CmdArgs.push_back(Args.MakeArgString(Twine("--lto-CGO") + OOpt));1118 }1119 }1120 1121 if (Args.hasArg(options::OPT_gsplit_dwarf)) {1122 SmallString<128> F;1123 if (const Arg *A = Args.getLastArg(options::OPT_dumpdir)) {1124 F = A->getValue();1125 } else {1126 F = Output.getFilename();1127 F += "_";1128 }1129 CmdArgs.push_back(1130 Args.MakeArgString(Twine(PluginOptPrefix) + "dwo_dir=" + F + "dwo"));1131 }1132 1133 if (IsThinLTO && !IsOSAIX)1134 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + "thinlto"));1135 else if (IsThinLTO && IsOSAIX)1136 CmdArgs.push_back(Args.MakeArgString(Twine("-bdbg:thinlto")));1137 1138 // Matrix intrinsic lowering happens at link time with ThinLTO. Enable1139 // LowerMatrixIntrinsicsPass, which is transitively called by1140 // buildThinLTODefaultPipeline under EnableMatrix.1141 if ((IsThinLTO || IsFatLTO || IsUnifiedLTO) &&1142 Args.hasArg(options::OPT_fenable_matrix))1143 CmdArgs.push_back(1144 Args.MakeArgString(Twine(PluginOptPrefix) + "-enable-matrix"));1145 1146 StringRef Parallelism = getLTOParallelism(Args, D);1147 if (!Parallelism.empty())1148 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +1149 ParallelismOpt + Parallelism));1150 1151 // Pass down GlobalISel options.1152 if (Arg *A = Args.getLastArg(options::OPT_fglobal_isel,1153 options::OPT_fno_global_isel)) {1154 // Parsing -fno-global-isel explicitly gives architectures that enable GISel1155 // by default a chance to disable it.1156 CmdArgs.push_back(Args.MakeArgString(1157 Twine(PluginOptPrefix) + "-global-isel=" +1158 (A->getOption().matches(options::OPT_fglobal_isel) ? "1" : "0")));1159 }1160 1161 // If an explicit debugger tuning argument appeared, pass it along.1162 if (Arg *A =1163 Args.getLastArg(options::OPT_gTune_Group, options::OPT_ggdbN_Group)) {1164 if (A->getOption().matches(options::OPT_glldb))1165 CmdArgs.push_back(1166 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=lldb"));1167 else if (A->getOption().matches(options::OPT_gsce))1168 CmdArgs.push_back(1169 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=sce"));1170 else if (A->getOption().matches(options::OPT_gdbx))1171 CmdArgs.push_back(1172 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=dbx"));1173 else1174 CmdArgs.push_back(1175 Args.MakeArgString(Twine(PluginOptPrefix) + "-debugger-tune=gdb"));1176 }1177 1178 if (IsOSAIX) {1179 if (!ToolChain.useIntegratedAs())1180 CmdArgs.push_back(1181 Args.MakeArgString(Twine(PluginOptPrefix) + "-no-integrated-as=1"));1182 1183 // On AIX, clang assumes strict-dwarf is true if any debug option is1184 // specified, unless it is told explicitly not to assume so.1185 Arg *A = Args.getLastArg(options::OPT_g_Group);1186 bool EnableDebugInfo = A && !A->getOption().matches(options::OPT_g0) &&1187 !A->getOption().matches(options::OPT_ggdb0);1188 if (EnableDebugInfo && Args.hasFlag(options::OPT_gstrict_dwarf,1189 options::OPT_gno_strict_dwarf, true))1190 CmdArgs.push_back(1191 Args.MakeArgString(Twine(PluginOptPrefix) + "-strict-dwarf=true"));1192 1193 for (const Arg *A : Args.filtered_reverse(options::OPT_mabi_EQ)) {1194 StringRef V = A->getValue();1195 if (V == "vec-default")1196 break;1197 if (V == "vec-extabi") {1198 CmdArgs.push_back(1199 Args.MakeArgString(Twine(PluginOptPrefix) + "-vec-extabi"));1200 break;1201 }1202 }1203 }1204 1205 bool UseSeparateSections =1206 isUseSeparateSections(ToolChain.getEffectiveTriple());1207 1208 if (Args.hasFlag(options::OPT_ffunction_sections,1209 options::OPT_fno_function_sections, UseSeparateSections))1210 CmdArgs.push_back(1211 Args.MakeArgString(Twine(PluginOptPrefix) + "-function-sections=1"));1212 else if (Args.hasArg(options::OPT_fno_function_sections))1213 CmdArgs.push_back(1214 Args.MakeArgString(Twine(PluginOptPrefix) + "-function-sections=0"));1215 1216 bool DataSectionsTurnedOff = false;1217 if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,1218 UseSeparateSections)) {1219 CmdArgs.push_back(1220 Args.MakeArgString(Twine(PluginOptPrefix) + "-data-sections=1"));1221 } else if (Args.hasArg(options::OPT_fno_data_sections)) {1222 DataSectionsTurnedOff = true;1223 CmdArgs.push_back(1224 Args.MakeArgString(Twine(PluginOptPrefix) + "-data-sections=0"));1225 }1226 1227 if (Args.hasArg(options::OPT_mxcoff_roptr) ||1228 Args.hasArg(options::OPT_mno_xcoff_roptr)) {1229 bool HasRoptr = Args.hasFlag(options::OPT_mxcoff_roptr,1230 options::OPT_mno_xcoff_roptr, false);1231 StringRef OptStr = HasRoptr ? "-mxcoff-roptr" : "-mno-xcoff-roptr";1232 if (!IsOSAIX)1233 D.Diag(diag::err_drv_unsupported_opt_for_target)1234 << OptStr << Triple.str();1235 1236 if (HasRoptr) {1237 // The data sections option is on by default on AIX. We only need to error1238 // out when -fno-data-sections is specified explicitly to turn off data1239 // sections.1240 if (DataSectionsTurnedOff)1241 D.Diag(diag::err_roptr_requires_data_sections);1242 1243 CmdArgs.push_back(1244 Args.MakeArgString(Twine(PluginOptPrefix) + "-mxcoff-roptr"));1245 }1246 }1247 1248 // Pass an option to enable split machine functions.1249 if (auto *A = Args.getLastArg(options::OPT_fsplit_machine_functions,1250 options::OPT_fno_split_machine_functions)) {1251 if (A->getOption().matches(options::OPT_fsplit_machine_functions))1252 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +1253 "-split-machine-functions"));1254 }1255 1256 if (Arg *A = getLastProfileSampleUseArg(Args)) {1257 StringRef FName = A->getValue();1258 if (!llvm::sys::fs::exists(FName))1259 D.Diag(diag::err_drv_no_such_file) << FName;1260 else1261 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +1262 "sample-profile=" + FName));1263 }1264 1265 if (auto *CSPGOGenerateArg = getLastCSProfileGenerateArg(Args)) {1266 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +1267 "cs-profile-generate"));1268 if (CSPGOGenerateArg->getOption().matches(1269 options::OPT_fcs_profile_generate_EQ)) {1270 SmallString<128> Path(CSPGOGenerateArg->getValue());1271 llvm::sys::path::append(Path, "default_%m.profraw");1272 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +1273 "cs-profile-path=" + Path));1274 } else1275 CmdArgs.push_back(1276 Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +1277 "cs-profile-path=default_%m.profraw"));1278 } else if (auto *ProfileUseArg = getLastProfileUseArg(Args)) {1279 SmallString<128> Path(1280 ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());1281 if (Path.empty() || llvm::sys::fs::is_directory(Path))1282 llvm::sys::path::append(Path, "default.profdata");1283 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + ExtraDash +1284 "cs-profile-path=" + Path));1285 }1286 1287 // This controls whether or not we perform JustMyCode instrumentation.1288 if (Args.hasFlag(options::OPT_fjmc, options::OPT_fno_jmc, false)) {1289 if (ToolChain.getEffectiveTriple().isOSBinFormatELF())1290 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) +1291 "-enable-jmc-instrument"));1292 else1293 D.Diag(clang::diag::warn_drv_fjmc_for_elf_only);1294 }1295 1296 if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,1297 Triple.hasDefaultEmulatedTLS())) {1298 CmdArgs.push_back(1299 Args.MakeArgString(Twine(PluginOptPrefix) + "-emulated-tls"));1300 }1301 if (isTLSDESCEnabled(ToolChain, Args))1302 CmdArgs.push_back(1303 Args.MakeArgString(Twine(PluginOptPrefix) + "-enable-tlsdesc"));1304 1305 if (Args.hasFlag(options::OPT_fstack_size_section,1306 options::OPT_fno_stack_size_section, false))1307 CmdArgs.push_back(1308 Args.MakeArgString(Twine(PluginOptPrefix) + "-stack-size-section"));1309 1310 if (Args.hasFlag(options::OPT_fexperimental_call_graph_section,1311 options::OPT_fno_experimental_call_graph_section, false))1312 CmdArgs.push_back(1313 Args.MakeArgString(Twine(PluginOptPrefix) + "-call-graph-section"));1314 1315 // Setup statistics file output.1316 SmallString<128> StatsFile = getStatsFileName(Args, Output, *Input, D);1317 if (!StatsFile.empty())1318 CmdArgs.push_back(1319 Args.MakeArgString(Twine(PluginOptPrefix) + "stats-file=" + StatsFile));1320 1321 // Setup crash diagnostics dir.1322 if (Arg *A = Args.getLastArg(options::OPT_fcrash_diagnostics_dir))1323 CmdArgs.push_back(Args.MakeArgString(1324 Twine(PluginOptPrefix) + "-crash-diagnostics-dir=" + A->getValue()));1325 1326 addX86AlignBranchArgs(D, Args, CmdArgs, /*IsLTO=*/true, PluginOptPrefix);1327 1328 // Handle remark diagnostics on screen options: '-Rpass-*'.1329 renderRpassOptions(Args, CmdArgs, PluginOptPrefix);1330 1331 // Handle serialized remarks options: '-fsave-optimization-record'1332 // and '-foptimization-record-*'.1333 if (willEmitRemarks(Args))1334 renderRemarksOptions(Args, CmdArgs, ToolChain.getEffectiveTriple(), *Input,1335 Output, PluginOptPrefix);1336 1337 // Handle remarks hotness/threshold related options.1338 renderRemarksHotnessOptions(Args, CmdArgs, PluginOptPrefix);1339 1340 addMachineOutlinerArgs(D, Args, CmdArgs, ToolChain.getEffectiveTriple(),1341 /*IsLTO=*/true, PluginOptPrefix);1342 1343 bool IsELF = Triple.isOSBinFormatELF();1344 bool Crel = false;1345 bool ImplicitMapSyms = false;1346 for (const Arg *A : Args.filtered(options::OPT_Wa_COMMA)) {1347 for (StringRef V : A->getValues()) {1348 auto Equal = V.split('=');1349 auto checkArg = [&](bool ValidTarget,1350 std::initializer_list<const char *> Set) {1351 if (!ValidTarget) {1352 D.Diag(diag::err_drv_unsupported_opt_for_target)1353 << (Twine("-Wa,") + Equal.first + "=").str()1354 << Triple.getTriple();1355 } else if (!llvm::is_contained(Set, Equal.second)) {1356 D.Diag(diag::err_drv_unsupported_option_argument)1357 << (Twine("-Wa,") + Equal.first + "=").str() << Equal.second;1358 }1359 };1360 if (Equal.first == "-mmapsyms") {1361 ImplicitMapSyms = Equal.second == "implicit";1362 checkArg(IsELF && Triple.isAArch64(), {"default", "implicit"});1363 } else if (V == "--crel")1364 Crel = true;1365 else if (V == "--no-crel")1366 Crel = false;1367 else1368 continue;1369 A->claim();1370 }1371 }1372 if (Crel) {1373 if (IsELF && !Triple.isMIPS()) {1374 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + "-crel"));1375 } else {1376 D.Diag(diag::err_drv_unsupported_opt_for_target)1377 << "-Wa,--crel" << D.getTargetTriple();1378 }1379 }1380 if (ImplicitMapSyms)1381 CmdArgs.push_back(1382 Args.MakeArgString(Twine(PluginOptPrefix) + "-implicit-mapsyms"));1383 1384 if (Args.hasArg(options::OPT_ftime_report))1385 CmdArgs.push_back(1386 Args.MakeArgString(Twine(PluginOptPrefix) + "-time-passes"));1387 1388 addDTLTOOptions(ToolChain, Args, CmdArgs);1389}1390 1391void tools::addOpenMPRuntimeLibraryPath(const ToolChain &TC,1392 const ArgList &Args,1393 ArgStringList &CmdArgs) {1394 // Default to clang lib / lib64 folder, i.e. the same location as device1395 // runtime.1396 SmallString<256> DefaultLibPath =1397 llvm::sys::path::parent_path(TC.getDriver().Dir);1398 llvm::sys::path::append(DefaultLibPath, CLANG_INSTALL_LIBDIR_BASENAME);1399 CmdArgs.push_back(Args.MakeArgString("-L" + DefaultLibPath));1400}1401 1402void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,1403 ArgStringList &CmdArgs) {1404 if (!Args.hasFlag(options::OPT_frtlib_add_rpath,1405 options::OPT_fno_rtlib_add_rpath, false))1406 return;1407 1408 if (TC.getTriple().isOSAIX()) // TODO: AIX doesn't support -rpath option.1409 return;1410 1411 SmallVector<std::string> CandidateRPaths(TC.getArchSpecificLibPaths());1412 if (const auto CandidateRPath = TC.getStdlibPath())1413 CandidateRPaths.emplace_back(*CandidateRPath);1414 1415 for (const auto &CandidateRPath : CandidateRPaths) {1416 if (TC.getVFS().exists(CandidateRPath)) {1417 CmdArgs.push_back("-rpath");1418 CmdArgs.push_back(Args.MakeArgString(CandidateRPath));1419 }1420 }1421}1422 1423bool tools::addOpenMPRuntime(const Compilation &C, ArgStringList &CmdArgs,1424 const ToolChain &TC, const ArgList &Args,1425 bool ForceStaticHostRuntime, bool IsOffloadingHost,1426 bool GompNeedsRT) {1427 if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,1428 options::OPT_fno_openmp, false)) {1429 // We need libomptarget (liboffload) if it's the choosen offloading runtime.1430 if (Args.hasFlag(options::OPT_foffload_via_llvm,1431 options::OPT_fno_offload_via_llvm, false))1432 CmdArgs.push_back("-lomptarget");1433 return false;1434 }1435 1436 Driver::OpenMPRuntimeKind RTKind = TC.getDriver().getOpenMPRuntime(Args);1437 1438 if (RTKind == Driver::OMPRT_Unknown)1439 // Already diagnosed.1440 return false;1441 1442 if (ForceStaticHostRuntime)1443 CmdArgs.push_back("-Bstatic");1444 1445 switch (RTKind) {1446 case Driver::OMPRT_OMP:1447 CmdArgs.push_back("-lomp");1448 break;1449 case Driver::OMPRT_GOMP:1450 CmdArgs.push_back("-lgomp");1451 break;1452 case Driver::OMPRT_IOMP5:1453 CmdArgs.push_back("-liomp5");1454 break;1455 case Driver::OMPRT_Unknown:1456 break;1457 }1458 1459 if (ForceStaticHostRuntime)1460 CmdArgs.push_back("-Bdynamic");1461 1462 if (RTKind == Driver::OMPRT_GOMP && GompNeedsRT)1463 CmdArgs.push_back("-lrt");1464 1465 if (IsOffloadingHost)1466 CmdArgs.push_back("-lomptarget");1467 1468 addArchSpecificRPath(TC, Args, CmdArgs);1469 1470 addOpenMPRuntimeLibraryPath(TC, Args, CmdArgs);1471 1472 return true;1473}1474 1475void tools::addOpenMPHostOffloadingArgs(const Compilation &C,1476 const JobAction &JA,1477 const llvm::opt::ArgList &Args,1478 llvm::opt::ArgStringList &CmdArgs) {1479 if (!JA.isHostOffloading(Action::OFK_OpenMP))1480 return;1481 1482 // For all the host OpenMP offloading compile jobs we need to pass the targets1483 // information using -fopenmp-targets= option.1484 constexpr llvm::StringLiteral Targets("--offload-targets=");1485 1486 SmallVector<std::string> Triples;1487 auto TCRange = C.getOffloadToolChains<Action::OFK_OpenMP>();1488 std::transform(TCRange.first, TCRange.second, std::back_inserter(Triples),1489 [](auto TC) { return TC.second->getTripleString(); });1490 CmdArgs.push_back(1491 Args.MakeArgString(Twine(Targets) + llvm::join(Triples, ",")));1492}1493 1494static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,1495 ArgStringList &CmdArgs, StringRef Sanitizer,1496 bool IsShared, bool IsWhole) {1497 // Wrap any static runtimes that must be forced into executable in1498 // whole-archive.1499 if (IsWhole) CmdArgs.push_back("--whole-archive");1500 CmdArgs.push_back(TC.getCompilerRTArgString(1501 Args, Sanitizer, IsShared ? ToolChain::FT_Shared : ToolChain::FT_Static));1502 if (IsWhole) CmdArgs.push_back("--no-whole-archive");1503 1504 if (IsShared) {1505 addArchSpecificRPath(TC, Args, CmdArgs);1506 }1507}1508 1509// Tries to use a file with the list of dynamic symbols that need to be exported1510// from the runtime library. Returns true if the file was found.1511static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,1512 ArgStringList &CmdArgs,1513 StringRef Sanitizer) {1514 bool LinkerIsGnuLd = solaris::isLinkerGnuLd(TC, Args);1515 1516 // Solaris ld defaults to --export-dynamic behaviour but doesn't support1517 // the option, so don't try to pass it.1518 if (TC.getTriple().isOSSolaris() && !LinkerIsGnuLd)1519 return true;1520 SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));1521 if (llvm::sys::fs::exists(SanRT + ".syms")) {1522 CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));1523 return true;1524 }1525 return false;1526}1527 1528void tools::addAsNeededOption(const ToolChain &TC,1529 const llvm::opt::ArgList &Args,1530 llvm::opt::ArgStringList &CmdArgs,1531 bool as_needed) {1532 assert(!TC.getTriple().isOSAIX() &&1533 "AIX linker does not support any form of --as-needed option yet.");1534 bool LinkerIsGnuLd = solaris::isLinkerGnuLd(TC, Args);1535 1536 // While the Solaris 11.2 ld added --as-needed/--no-as-needed as aliases1537 // for the native forms -z ignore/-z record, they are missing in Illumos,1538 // so always use the native form.1539 // GNU ld doesn't support -z ignore/-z record, so don't use them even on1540 // Solaris.1541 if (TC.getTriple().isOSSolaris() && !LinkerIsGnuLd) {1542 CmdArgs.push_back("-z");1543 CmdArgs.push_back(as_needed ? "ignore" : "record");1544 } else {1545 CmdArgs.push_back(as_needed ? "--as-needed" : "--no-as-needed");1546 }1547}1548 1549void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,1550 const llvm::opt::ArgList &Args,1551 ArgStringList &CmdArgs) {1552 // Force linking against the system libraries sanitizers depends on1553 // (see PR15823 why this is necessary).1554 addAsNeededOption(TC, Args, CmdArgs, false);1555 // There's no libpthread or librt on RTEMS & Android.1556 if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&1557 !TC.getTriple().isAndroid() && !TC.getTriple().isOHOSFamily()) {1558 CmdArgs.push_back("-lpthread");1559 if (!TC.getTriple().isOSOpenBSD() && !TC.getTriple().isOSHaiku())1560 CmdArgs.push_back("-lrt");1561 }1562 CmdArgs.push_back("-lm");1563 // There's no libdl on all OSes.1564 if (!TC.getTriple().isOSFreeBSD() && !TC.getTriple().isOSNetBSD() &&1565 !TC.getTriple().isOSOpenBSD() && !TC.getTriple().isOSDragonFly() &&1566 !TC.getTriple().isOSHaiku() &&1567 TC.getTriple().getOS() != llvm::Triple::RTEMS)1568 CmdArgs.push_back("-ldl");1569 // Required for backtrace on some OSes1570 if (TC.getTriple().isOSFreeBSD() || TC.getTriple().isOSNetBSD() ||1571 TC.getTriple().isOSOpenBSD() || TC.getTriple().isOSDragonFly())1572 CmdArgs.push_back("-lexecinfo");1573 if (TC.getTriple().isOSHaiku())1574 CmdArgs.push_back("-lbsd");1575 // There is no libresolv on Android, FreeBSD, OpenBSD, etc. On musl1576 // libresolv.a, even if exists, is an empty archive to satisfy POSIX -lresolv1577 // requirement.1578 if (TC.getTriple().isOSLinux() && !TC.getTriple().isAndroid() &&1579 !TC.getTriple().isMusl())1580 CmdArgs.push_back("-lresolv");1581}1582 1583static void1584collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,1585 SmallVectorImpl<StringRef> &SharedRuntimes,1586 SmallVectorImpl<StringRef> &StaticRuntimes,1587 SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,1588 SmallVectorImpl<StringRef> &HelperStaticRuntimes,1589 SmallVectorImpl<StringRef> &RequiredSymbols) {1590 assert(!TC.getTriple().isOSDarwin() && "it's not used by Darwin");1591 const SanitizerArgs &SanArgs = TC.getSanitizerArgs(Args);1592 // Collect shared runtimes.1593 if (SanArgs.needsSharedRt()) {1594 if (SanArgs.needsAsanRt()) {1595 SharedRuntimes.push_back("asan");1596 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())1597 HelperStaticRuntimes.push_back("asan-preinit");1598 }1599 if (SanArgs.needsMemProfRt()) {1600 SharedRuntimes.push_back("memprof");1601 if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())1602 HelperStaticRuntimes.push_back("memprof-preinit");1603 }1604 if (SanArgs.needsNsanRt())1605 SharedRuntimes.push_back("nsan");1606 if (SanArgs.needsUbsanRt()) {1607 if (SanArgs.requiresMinimalRuntime())1608 SharedRuntimes.push_back("ubsan_minimal");1609 else1610 SharedRuntimes.push_back("ubsan_standalone");1611 }1612 if (SanArgs.needsScudoRt()) {1613 SharedRuntimes.push_back("scudo_standalone");1614 }1615 if (SanArgs.needsTsanRt())1616 SharedRuntimes.push_back("tsan");1617 if (SanArgs.needsTysanRt())1618 SharedRuntimes.push_back("tysan");1619 if (SanArgs.needsHwasanRt()) {1620 if (SanArgs.needsHwasanAliasesRt())1621 SharedRuntimes.push_back("hwasan_aliases");1622 else1623 SharedRuntimes.push_back("hwasan");1624 if (!Args.hasArg(options::OPT_shared))1625 HelperStaticRuntimes.push_back("hwasan-preinit");1626 }1627 if (SanArgs.needsRtsanRt() && SanArgs.linkRuntimes())1628 SharedRuntimes.push_back("rtsan");1629 }1630 1631 // The stats_client library is also statically linked into DSOs.1632 if (SanArgs.needsStatsRt())1633 StaticRuntimes.push_back("stats_client");1634 1635 // Always link the static runtime regardless of DSO or executable.1636 if (SanArgs.needsAsanRt())1637 HelperStaticRuntimes.push_back("asan_static");1638 1639 // Collect static runtimes.1640 if (Args.hasArg(options::OPT_shared)) {1641 // Don't link static runtimes into DSOs.1642 return;1643 }1644 1645 // Each static runtime that has a DSO counterpart above is excluded below,1646 // but runtimes that exist only as static are not affected by needsSharedRt.1647 1648 if (!SanArgs.needsSharedRt() && SanArgs.needsAsanRt()) {1649 StaticRuntimes.push_back("asan");1650 if (SanArgs.linkCXXRuntimes())1651 StaticRuntimes.push_back("asan_cxx");1652 }1653 1654 if (!SanArgs.needsSharedRt() && SanArgs.needsRtsanRt() &&1655 SanArgs.linkRuntimes())1656 StaticRuntimes.push_back("rtsan");1657 1658 if (!SanArgs.needsSharedRt() && SanArgs.needsMemProfRt()) {1659 StaticRuntimes.push_back("memprof");1660 if (SanArgs.linkCXXRuntimes())1661 StaticRuntimes.push_back("memprof_cxx");1662 }1663 1664 if (!SanArgs.needsSharedRt() && SanArgs.needsHwasanRt()) {1665 if (SanArgs.needsHwasanAliasesRt()) {1666 StaticRuntimes.push_back("hwasan_aliases");1667 if (SanArgs.linkCXXRuntimes())1668 StaticRuntimes.push_back("hwasan_aliases_cxx");1669 } else {1670 StaticRuntimes.push_back("hwasan");1671 if (SanArgs.linkCXXRuntimes())1672 StaticRuntimes.push_back("hwasan_cxx");1673 }1674 }1675 if (SanArgs.needsDfsanRt())1676 StaticRuntimes.push_back("dfsan");1677 if (SanArgs.needsLsanRt())1678 StaticRuntimes.push_back("lsan");1679 if (SanArgs.needsMsanRt()) {1680 StaticRuntimes.push_back("msan");1681 if (SanArgs.linkCXXRuntimes())1682 StaticRuntimes.push_back("msan_cxx");1683 }1684 if (!SanArgs.needsSharedRt() && SanArgs.needsNsanRt())1685 StaticRuntimes.push_back("nsan");1686 if (!SanArgs.needsSharedRt() && SanArgs.needsTsanRt()) {1687 StaticRuntimes.push_back("tsan");1688 if (SanArgs.linkCXXRuntimes())1689 StaticRuntimes.push_back("tsan_cxx");1690 }1691 if (!SanArgs.needsSharedRt() && SanArgs.needsTysanRt())1692 StaticRuntimes.push_back("tysan");1693 if (!SanArgs.needsSharedRt() && SanArgs.needsUbsanRt()) {1694 if (SanArgs.requiresMinimalRuntime()) {1695 StaticRuntimes.push_back("ubsan_minimal");1696 } else {1697 StaticRuntimes.push_back("ubsan_standalone");1698 }1699 }1700 if (SanArgs.needsSafeStackRt()) {1701 NonWholeStaticRuntimes.push_back("safestack");1702 RequiredSymbols.push_back("__safestack_init");1703 }1704 if (!(SanArgs.needsSharedRt() && SanArgs.needsUbsanRt())) {1705 if (SanArgs.needsCfiCrossDsoRt())1706 StaticRuntimes.push_back("cfi");1707 if (SanArgs.needsCfiCrossDsoDiagRt())1708 StaticRuntimes.push_back("cfi_diag");1709 }1710 if (SanArgs.linkCXXRuntimes() && !SanArgs.requiresMinimalRuntime() &&1711 ((!SanArgs.needsSharedRt() && SanArgs.needsUbsanCXXRt()) ||1712 SanArgs.needsCfiCrossDsoDiagRt())) {1713 StaticRuntimes.push_back("ubsan_standalone_cxx");1714 }1715 if (SanArgs.needsStatsRt()) {1716 NonWholeStaticRuntimes.push_back("stats");1717 RequiredSymbols.push_back("__sanitizer_stats_register");1718 }1719 if (!SanArgs.needsSharedRt() && SanArgs.needsScudoRt()) {1720 StaticRuntimes.push_back("scudo_standalone");1721 if (SanArgs.linkCXXRuntimes())1722 StaticRuntimes.push_back("scudo_standalone_cxx");1723 }1724}1725 1726// Should be called before we add system libraries (C++ ABI, libstdc++/libc++,1727// C runtime, etc). Returns true if sanitizer system deps need to be linked in.1728bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,1729 ArgStringList &CmdArgs) {1730 const SanitizerArgs &SanArgs = TC.getSanitizerArgs(Args);1731 SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,1732 NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;1733 if (SanArgs.linkRuntimes()) {1734 collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,1735 NonWholeStaticRuntimes, HelperStaticRuntimes,1736 RequiredSymbols);1737 }1738 1739 // -u options must be added before the runtime libs that resolve them.1740 for (auto S : RequiredSymbols) {1741 CmdArgs.push_back("-u");1742 CmdArgs.push_back(Args.MakeArgString(S));1743 }1744 1745 // Inject libfuzzer dependencies.1746 if (SanArgs.needsFuzzer() && SanArgs.linkRuntimes() &&1747 !Args.hasArg(options::OPT_shared)) {1748 1749 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);1750 if (SanArgs.needsFuzzerInterceptors())1751 addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer_interceptors", false,1752 true);1753 if (!Args.hasArg(options::OPT_nostdlibxx)) {1754 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&1755 !Args.hasArg(options::OPT_static);1756 if (OnlyLibstdcxxStatic)1757 CmdArgs.push_back("-Bstatic");1758 TC.AddCXXStdlibLibArgs(Args, CmdArgs);1759 if (OnlyLibstdcxxStatic)1760 CmdArgs.push_back("-Bdynamic");1761 }1762 }1763 1764 for (auto RT : SharedRuntimes)1765 addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);1766 for (auto RT : HelperStaticRuntimes)1767 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);1768 bool AddExportDynamic = false;1769 for (auto RT : StaticRuntimes) {1770 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);1771 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);1772 }1773 for (auto RT : NonWholeStaticRuntimes) {1774 addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);1775 AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);1776 }1777 // If there is a static runtime with no dynamic list, force all the symbols1778 // to be dynamic to be sure we export sanitizer interface functions.1779 if (AddExportDynamic)1780 CmdArgs.push_back("--export-dynamic");1781 1782 if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)1783 CmdArgs.push_back("--export-dynamic-symbol=__cfi_check");1784 1785 if (SanArgs.hasMemTag()) {1786 if (!TC.getTriple().isAndroid()) {1787 TC.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)1788 << "-fsanitize=memtag*" << TC.getTriple().str();1789 }1790 CmdArgs.push_back(1791 Args.MakeArgString("--android-memtag-mode=" + SanArgs.getMemtagMode()));1792 if (SanArgs.hasMemtagHeap())1793 CmdArgs.push_back("--android-memtag-heap");1794 if (SanArgs.hasMemtagStack())1795 CmdArgs.push_back("--android-memtag-stack");1796 }1797 1798 return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();1799}1800 1801bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {1802 const XRayArgs &XRay = TC.getXRayArgs(Args);1803 if (Args.hasArg(options::OPT_shared)) {1804 if (XRay.needsXRayDSORt()) {1805 CmdArgs.push_back("--whole-archive");1806 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray-dso"));1807 CmdArgs.push_back("--no-whole-archive");1808 return true;1809 }1810 } else if (XRay.needsXRayRt()) {1811 CmdArgs.push_back("--whole-archive");1812 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray"));1813 for (const auto &Mode : XRay.modeList())1814 CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode));1815 CmdArgs.push_back("--no-whole-archive");1816 return true;1817 }1818 1819 return false;1820}1821 1822void tools::linkXRayRuntimeDeps(const ToolChain &TC,1823 const llvm::opt::ArgList &Args,1824 ArgStringList &CmdArgs) {1825 addAsNeededOption(TC, Args, CmdArgs, false);1826 CmdArgs.push_back("-lpthread");1827 if (!TC.getTriple().isOSOpenBSD())1828 CmdArgs.push_back("-lrt");1829 CmdArgs.push_back("-lm");1830 1831 if (!TC.getTriple().isOSFreeBSD() &&1832 !TC.getTriple().isOSNetBSD() &&1833 !TC.getTriple().isOSOpenBSD())1834 CmdArgs.push_back("-ldl");1835}1836 1837bool tools::areOptimizationsEnabled(const ArgList &Args) {1838 // Find the last -O arg and see if it is non-zero.1839 if (Arg *A = Args.getLastArg(options::OPT_O_Group))1840 return !A->getOption().matches(options::OPT_O0);1841 // Defaults to -O0.1842 return false;1843}1844 1845const char *tools::SplitDebugName(const JobAction &JA, const ArgList &Args,1846 const InputInfo &Input,1847 const InputInfo &Output) {1848 auto AddPostfix = [JA](auto &F) {1849 if (JA.getOffloadingDeviceKind() == Action::OFK_HIP)1850 F += (Twine("_") + JA.getOffloadingArch()).str();1851 F += ".dwo";1852 };1853 if (Arg *A = Args.getLastArg(options::OPT_gsplit_dwarf_EQ))1854 if (StringRef(A->getValue()) == "single" && Output.isFilename())1855 return Args.MakeArgString(Output.getFilename());1856 1857 SmallString<128> T;1858 if (const Arg *A = Args.getLastArg(options::OPT_dumpdir)) {1859 T = A->getValue();1860 } else {1861 Arg *FinalOutput = Args.getLastArg(options::OPT_o, options::OPT__SLASH_o);1862 if (FinalOutput && Args.hasArg(options::OPT_c)) {1863 T = FinalOutput->getValue();1864 llvm::sys::path::remove_filename(T);1865 llvm::sys::path::append(T,1866 llvm::sys::path::stem(FinalOutput->getValue()));1867 AddPostfix(T);1868 return Args.MakeArgString(T);1869 }1870 }1871 1872 T += llvm::sys::path::stem(Input.getBaseInput());1873 AddPostfix(T);1874 return Args.MakeArgString(T);1875}1876 1877void tools::SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,1878 const JobAction &JA, const ArgList &Args,1879 const InputInfo &Output, const char *OutFile) {1880 ArgStringList ExtractArgs;1881 ExtractArgs.push_back("--extract-dwo");1882 1883 ArgStringList StripArgs;1884 StripArgs.push_back("--strip-dwo");1885 1886 // Grabbing the output of the earlier compile step.1887 StripArgs.push_back(Output.getFilename());1888 ExtractArgs.push_back(Output.getFilename());1889 ExtractArgs.push_back(OutFile);1890 1891 const char *Exec =1892 Args.MakeArgString(TC.GetProgramPath(CLANG_DEFAULT_OBJCOPY));1893 InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());1894 1895 // First extract the dwo sections.1896 C.addCommand(std::make_unique<Command>(JA, T,1897 ResponseFileSupport::AtFileCurCP(),1898 Exec, ExtractArgs, II, Output));1899 1900 // Then remove them from the original .o file.1901 C.addCommand(std::make_unique<Command>(1902 JA, T, ResponseFileSupport::AtFileCurCP(), Exec, StripArgs, II, Output));1903}1904 1905// Claim options we don't want to warn if they are unused. We do this for1906// options that build systems might add but are unused when assembling or only1907// running the preprocessor for example.1908void tools::claimNoWarnArgs(const ArgList &Args) {1909 // Don't warn about unused -f(no-)?lto. This can happen when we're1910 // preprocessing, precompiling or assembling.1911 Args.ClaimAllArgs(options::OPT_flto_EQ);1912 Args.ClaimAllArgs(options::OPT_flto);1913 Args.ClaimAllArgs(options::OPT_fno_lto);1914}1915 1916Arg *tools::getLastCSProfileGenerateArg(const ArgList &Args) {1917 auto *CSPGOGenerateArg = Args.getLastArg(options::OPT_fcs_profile_generate,1918 options::OPT_fcs_profile_generate_EQ,1919 options::OPT_fno_profile_generate);1920 if (CSPGOGenerateArg &&1921 CSPGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))1922 CSPGOGenerateArg = nullptr;1923 1924 return CSPGOGenerateArg;1925}1926 1927Arg *tools::getLastProfileUseArg(const ArgList &Args) {1928 auto *ProfileUseArg = Args.getLastArg(1929 options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,1930 options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,1931 options::OPT_fno_profile_instr_use);1932 1933 if (ProfileUseArg &&1934 ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))1935 ProfileUseArg = nullptr;1936 1937 return ProfileUseArg;1938}1939 1940Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {1941 auto *ProfileSampleUseArg = Args.getLastArg(1942 options::OPT_fprofile_sample_use_EQ, options::OPT_fno_profile_sample_use);1943 1944 if (ProfileSampleUseArg && (ProfileSampleUseArg->getOption().matches(1945 options::OPT_fno_profile_sample_use)))1946 return nullptr;1947 1948 return Args.getLastArg(options::OPT_fprofile_sample_use_EQ);1949}1950 1951const char *tools::RelocationModelName(llvm::Reloc::Model Model) {1952 switch (Model) {1953 case llvm::Reloc::Static:1954 return "static";1955 case llvm::Reloc::PIC_:1956 return "pic";1957 case llvm::Reloc::DynamicNoPIC:1958 return "dynamic-no-pic";1959 case llvm::Reloc::ROPI:1960 return "ropi";1961 case llvm::Reloc::RWPI:1962 return "rwpi";1963 case llvm::Reloc::ROPI_RWPI:1964 return "ropi-rwpi";1965 }1966 llvm_unreachable("Unknown Reloc::Model kind");1967}1968 1969/// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,1970/// smooshes them together with platform defaults, to decide whether1971/// this compile should be using PIC mode or not. Returns a tuple of1972/// (RelocationModel, PICLevel, IsPIE).1973std::tuple<llvm::Reloc::Model, unsigned, bool>1974tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {1975 const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();1976 const llvm::Triple &Triple = ToolChain.getTriple();1977 1978 bool PIE = ToolChain.isPIEDefault(Args);1979 bool PIC = PIE || ToolChain.isPICDefault();1980 // The Darwin/MachO default to use PIC does not apply when using -static.1981 if (Triple.isOSBinFormatMachO() && Args.hasArg(options::OPT_static))1982 PIE = PIC = false;1983 bool IsPICLevelTwo = PIC;1984 1985 bool KernelOrKext =1986 Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);1987 1988 // Android-specific defaults for PIC/PIE1989 if (Triple.isAndroid()) {1990 switch (Triple.getArch()) {1991 case llvm::Triple::x86:1992 case llvm::Triple::x86_64:1993 PIC = true; // "-fPIC"1994 IsPICLevelTwo = true;1995 break;1996 1997 default:1998 PIC = true; // "-fpic"1999 break;2000 }2001 }2002 2003 // OHOS-specific defaults for PIC/PIE2004 if (Triple.isOHOSFamily() && Triple.getArch() == llvm::Triple::aarch64)2005 PIC = true;2006 2007 // OpenBSD-specific defaults for PIE2008 if (Triple.isOSOpenBSD()) {2009 switch (ToolChain.getArch()) {2010 case llvm::Triple::arm:2011 case llvm::Triple::aarch64:2012 case llvm::Triple::mips64:2013 case llvm::Triple::mips64el:2014 case llvm::Triple::x86:2015 case llvm::Triple::x86_64:2016 IsPICLevelTwo = false; // "-fpie"2017 break;2018 2019 case llvm::Triple::ppc:2020 case llvm::Triple::sparcv9:2021 IsPICLevelTwo = true; // "-fPIE"2022 break;2023 2024 default:2025 break;2026 }2027 }2028 2029 // The last argument relating to either PIC or PIE wins, and no2030 // other argument is used. If the last argument is any flavor of the2031 // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE2032 // option implicitly enables PIC at the same level.2033 Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,2034 options::OPT_fpic, options::OPT_fno_pic,2035 options::OPT_fPIE, options::OPT_fno_PIE,2036 options::OPT_fpie, options::OPT_fno_pie);2037 if (Triple.isOSWindows() && !Triple.isOSCygMing() && LastPICArg &&2038 LastPICArg == Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,2039 options::OPT_fPIE, options::OPT_fpie)) {2040 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)2041 << LastPICArg->getSpelling() << Triple.str();2042 if (Triple.getArch() == llvm::Triple::x86_64)2043 return std::make_tuple(llvm::Reloc::PIC_, 2U, false);2044 return std::make_tuple(llvm::Reloc::Static, 0U, false);2045 }2046 2047 // Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness2048 // is forced, then neither PIC nor PIE flags will have no effect.2049 if (!ToolChain.isPICDefaultForced()) {2050 if (LastPICArg) {2051 Option O = LastPICArg->getOption();2052 if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||2053 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {2054 PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);2055 PIC =2056 PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);2057 IsPICLevelTwo =2058 O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);2059 } else {2060 PIE = PIC = false;2061 if (EffectiveTriple.isPS()) {2062 Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);2063 StringRef Model = ModelArg ? ModelArg->getValue() : "";2064 if (Model != "kernel") {2065 PIC = true;2066 ToolChain.getDriver().Diag(diag::warn_drv_ps_force_pic)2067 << LastPICArg->getSpelling()2068 << (EffectiveTriple.isPS4() ? "PS4" : "PS5");2069 }2070 }2071 }2072 }2073 }2074 2075 // Introduce a Darwin and PS4/PS5-specific hack. If the default is PIC, but2076 // the PIC level would've been set to level 1, force it back to level 2 PIC2077 // instead.2078 if (PIC && (Triple.isOSDarwin() || EffectiveTriple.isPS()))2079 IsPICLevelTwo |= ToolChain.isPICDefault();2080 2081 // This kernel flags are a trump-card: they will disable PIC/PIE2082 // generation, independent of the argument order.2083 if (KernelOrKext &&2084 ((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&2085 !EffectiveTriple.isWatchOS() && !EffectiveTriple.isDriverKit()))2086 PIC = PIE = false;2087 2088 if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {2089 // This is a very special mode. It trumps the other modes, almost no one2090 // uses it, and it isn't even valid on any OS but Darwin.2091 if (!Triple.isOSDarwin())2092 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)2093 << A->getSpelling() << Triple.str();2094 2095 // FIXME: Warn when this flag trumps some other PIC or PIE flag.2096 2097 // Only a forced PIC mode can cause the actual compile to have PIC defines2098 // etc., no flags are sufficient. This behavior was selected to closely2099 // match that of llvm-gcc and Apple GCC before that.2100 PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();2101 2102 return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);2103 }2104 2105 bool EmbeddedPISupported;2106 switch (Triple.getArch()) {2107 case llvm::Triple::arm:2108 case llvm::Triple::armeb:2109 case llvm::Triple::thumb:2110 case llvm::Triple::thumbeb:2111 EmbeddedPISupported = true;2112 break;2113 default:2114 EmbeddedPISupported = false;2115 break;2116 }2117 2118 bool ROPI = false, RWPI = false;2119 Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);2120 if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {2121 if (!EmbeddedPISupported)2122 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)2123 << LastROPIArg->getSpelling() << Triple.str();2124 ROPI = true;2125 }2126 Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);2127 if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {2128 if (!EmbeddedPISupported)2129 ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)2130 << LastRWPIArg->getSpelling() << Triple.str();2131 RWPI = true;2132 }2133 2134 // ROPI and RWPI are not compatible with PIC or PIE.2135 if ((ROPI || RWPI) && (PIC || PIE))2136 ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);2137 2138 if (Triple.isMIPS()) {2139 StringRef CPUName;2140 StringRef ABIName;2141 mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);2142 // When targeting the N64 ABI, PIC is the default, except in the case2143 // when the -mno-abicalls option is used. In that case we exit2144 // at next check regardless of PIC being set below.2145 if (ABIName == "n64")2146 PIC = true;2147 // When targettng MIPS with -mno-abicalls, it's always static.2148 if(Args.hasArg(options::OPT_mno_abicalls))2149 return std::make_tuple(llvm::Reloc::Static, 0U, false);2150 // Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,2151 // does not use PIC level 2 for historical reasons.2152 IsPICLevelTwo = false;2153 }2154 2155 if (PIC)2156 return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);2157 2158 llvm::Reloc::Model RelocM = llvm::Reloc::Static;2159 if (ROPI && RWPI)2160 RelocM = llvm::Reloc::ROPI_RWPI;2161 else if (ROPI)2162 RelocM = llvm::Reloc::ROPI;2163 else if (RWPI)2164 RelocM = llvm::Reloc::RWPI;2165 2166 return std::make_tuple(RelocM, 0U, false);2167}2168 2169bool tools::getStaticPIE(const ArgList &Args, const ToolChain &TC) {2170 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);2171 if (HasStaticPIE && Args.hasArg(options::OPT_no_pie)) {2172 const Driver &D = TC.getDriver();2173 const llvm::opt::OptTable &Opts = D.getOpts();2174 StringRef StaticPIEName = Opts.getOptionName(options::OPT_static_pie);2175 StringRef NoPIEName = Opts.getOptionName(options::OPT_nopie);2176 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;2177 }2178 return HasStaticPIE;2179}2180 2181// `-falign-functions` indicates that the functions should be aligned to the2182// backend's preferred alignment.2183//2184// `-falign-functions=1` is the same as `-fno-align-functions`.2185//2186// The scalar `n` in `-falign-functions=n` must be an integral value between2187// [0, 65536]. If the value is not a power-of-two, it will be rounded up to2188// the nearest power-of-two.2189//2190// If we return `0`, the frontend will default to the backend's preferred2191// alignment.2192//2193// NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`2194// to mean `-falign-functions=16`. GCC defaults to the backend's preferred2195// alignment. For unaligned functions, we default to the backend's preferred2196// alignment.2197unsigned tools::ParseFunctionAlignment(const ToolChain &TC,2198 const ArgList &Args) {2199 const Arg *A = Args.getLastArg(options::OPT_falign_functions,2200 options::OPT_falign_functions_EQ,2201 options::OPT_fno_align_functions);2202 if (!A || A->getOption().matches(options::OPT_fno_align_functions))2203 return 0;2204 2205 if (A->getOption().matches(options::OPT_falign_functions))2206 return 0;2207 2208 unsigned Value = 0;2209 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)2210 TC.getDriver().Diag(diag::err_drv_invalid_int_value)2211 << A->getAsString(Args) << A->getValue();2212 return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;2213}2214 2215void tools::addDebugInfoKind(2216 ArgStringList &CmdArgs, llvm::codegenoptions::DebugInfoKind DebugInfoKind) {2217 switch (DebugInfoKind) {2218 case llvm::codegenoptions::DebugDirectivesOnly:2219 CmdArgs.push_back("-debug-info-kind=line-directives-only");2220 break;2221 case llvm::codegenoptions::DebugLineTablesOnly:2222 CmdArgs.push_back("-debug-info-kind=line-tables-only");2223 break;2224 case llvm::codegenoptions::DebugInfoConstructor:2225 CmdArgs.push_back("-debug-info-kind=constructor");2226 break;2227 case llvm::codegenoptions::LimitedDebugInfo:2228 CmdArgs.push_back("-debug-info-kind=limited");2229 break;2230 case llvm::codegenoptions::FullDebugInfo:2231 CmdArgs.push_back("-debug-info-kind=standalone");2232 break;2233 case llvm::codegenoptions::UnusedTypeInfo:2234 CmdArgs.push_back("-debug-info-kind=unused-types");2235 break;2236 default:2237 break;2238 }2239}2240 2241// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases2242// to the corresponding DebugInfoKind.2243llvm::codegenoptions::DebugInfoKind tools::debugLevelToInfoKind(const Arg &A) {2244 assert(A.getOption().matches(options::OPT_gN_Group) &&2245 "Not a -g option that specifies a debug-info level");2246 if (A.getOption().matches(options::OPT_g0) ||2247 A.getOption().matches(options::OPT_ggdb0))2248 return llvm::codegenoptions::NoDebugInfo;2249 if (A.getOption().matches(options::OPT_gline_tables_only) ||2250 A.getOption().matches(options::OPT_ggdb1))2251 return llvm::codegenoptions::DebugLineTablesOnly;2252 if (A.getOption().matches(options::OPT_gline_directives_only))2253 return llvm::codegenoptions::DebugDirectivesOnly;2254 return llvm::codegenoptions::DebugInfoConstructor;2255}2256 2257static unsigned ParseDebugDefaultVersion(const ToolChain &TC,2258 const ArgList &Args) {2259 const Arg *A = Args.getLastArg(options::OPT_fdebug_default_version);2260 2261 if (!A)2262 return 0;2263 2264 unsigned Value = 0;2265 if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 6 ||2266 Value < 2)2267 TC.getDriver().Diag(diag::err_drv_invalid_int_value)2268 << A->getAsString(Args) << A->getValue();2269 return Value;2270}2271 2272unsigned tools::DwarfVersionNum(StringRef ArgValue) {2273 return llvm::StringSwitch<unsigned>(ArgValue)2274 .Case("-gdwarf-2", 2)2275 .Case("-gdwarf-3", 3)2276 .Case("-gdwarf-4", 4)2277 .Case("-gdwarf-5", 5)2278 .Case("-gdwarf-6", 6)2279 .Default(0);2280}2281 2282const Arg *tools::getDwarfNArg(const ArgList &Args) {2283 return Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,2284 options::OPT_gdwarf_4, options::OPT_gdwarf_5,2285 options::OPT_gdwarf_6, options::OPT_gdwarf);2286}2287 2288unsigned tools::getDwarfVersion(const ToolChain &TC,2289 const llvm::opt::ArgList &Args) {2290 unsigned DwarfVersion = ParseDebugDefaultVersion(TC, Args);2291 if (const Arg *GDwarfN = getDwarfNArg(Args))2292 if (int N = DwarfVersionNum(GDwarfN->getSpelling())) {2293 DwarfVersion = N;2294 if (DwarfVersion == 5 && TC.getTriple().isOSAIX())2295 TC.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)2296 << GDwarfN->getSpelling() << TC.getTriple().str();2297 }2298 if (DwarfVersion == 0) {2299 DwarfVersion = TC.GetDefaultDwarfVersion();2300 assert(DwarfVersion && "toolchain default DWARF version must be nonzero");2301 }2302 return DwarfVersion;2303}2304 2305DwarfFissionKind tools::getDebugFissionKind(const Driver &D,2306 const ArgList &Args, Arg *&Arg) {2307 Arg = Args.getLastArg(options::OPT_gsplit_dwarf, options::OPT_gsplit_dwarf_EQ,2308 options::OPT_gno_split_dwarf);2309 if (!Arg || Arg->getOption().matches(options::OPT_gno_split_dwarf))2310 return DwarfFissionKind::None;2311 2312 if (Arg->getOption().matches(options::OPT_gsplit_dwarf))2313 return DwarfFissionKind::Split;2314 2315 StringRef Value = Arg->getValue();2316 if (Value == "split")2317 return DwarfFissionKind::Split;2318 if (Value == "single")2319 return DwarfFissionKind::Single;2320 2321 D.Diag(diag::err_drv_unsupported_option_argument)2322 << Arg->getSpelling() << Arg->getValue();2323 return DwarfFissionKind::None;2324}2325 2326bool tools::checkDebugInfoOption(const Arg *A, const ArgList &Args,2327 const Driver &D, const ToolChain &TC) {2328 assert(A && "Expected non-nullptr argument.");2329 if (TC.supportsDebugInfoOption(A))2330 return true;2331 D.Diag(diag::warn_drv_unsupported_debug_info_opt_for_target)2332 << A->getAsString(Args) << TC.getTripleString();2333 return false;2334}2335 2336void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,2337 ArgStringList &CmdArgs) {2338 llvm::Reloc::Model RelocationModel;2339 unsigned PICLevel;2340 bool IsPIE;2341 std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);2342 2343 if (RelocationModel != llvm::Reloc::Static)2344 CmdArgs.push_back("-KPIC");2345}2346 2347/// Determine whether Objective-C automated reference counting is2348/// enabled.2349bool tools::isObjCAutoRefCount(const ArgList &Args) {2350 return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);2351}2352 2353enum class LibGccType { UnspecifiedLibGcc, StaticLibGcc, SharedLibGcc };2354 2355static LibGccType getLibGccType(const ToolChain &TC, const Driver &D,2356 const ArgList &Args) {2357 if (Args.hasArg(options::OPT_static_libgcc) ||2358 Args.hasArg(options::OPT_static) || Args.hasArg(options::OPT_static_pie) ||2359 // The Android NDK only provides libunwind.a, not libunwind.so.2360 TC.getTriple().isAndroid())2361 return LibGccType::StaticLibGcc;2362 if (Args.hasArg(options::OPT_shared_libgcc))2363 return LibGccType::SharedLibGcc;2364 return LibGccType::UnspecifiedLibGcc;2365}2366 2367// Gcc adds libgcc arguments in various ways:2368//2369// gcc <none>: -lgcc --as-needed -lgcc_s --no-as-needed2370// g++ <none>: -lgcc_s -lgcc2371// gcc shared: -lgcc_s -lgcc2372// g++ shared: -lgcc_s -lgcc2373// gcc static: -lgcc -lgcc_eh2374// g++ static: -lgcc -lgcc_eh2375// gcc static-pie: -lgcc -lgcc_eh2376// g++ static-pie: -lgcc -lgcc_eh2377//2378// Also, certain targets need additional adjustments.2379 2380static void AddUnwindLibrary(const ToolChain &TC, const Driver &D,2381 ArgStringList &CmdArgs, const ArgList &Args) {2382 ToolChain::UnwindLibType UNW = TC.GetUnwindLibType(Args);2383 // By default OHOS binaries are linked statically to libunwind.2384 if (TC.getTriple().isOHOSFamily() && UNW == ToolChain::UNW_CompilerRT) {2385 CmdArgs.push_back("-l:libunwind.a");2386 return;2387 }2388 2389 // Targets that don't use unwind libraries.2390 if ((TC.getTriple().isAndroid() && UNW == ToolChain::UNW_Libgcc) ||2391 TC.getTriple().isOSIAMCU() || TC.getTriple().isOSBinFormatWasm() ||2392 TC.getTriple().isWindowsMSVCEnvironment() || UNW == ToolChain::UNW_None)2393 return;2394 2395 LibGccType LGT = getLibGccType(TC, D, Args);2396 bool AsNeeded = LGT == LibGccType::UnspecifiedLibGcc &&2397 (UNW == ToolChain::UNW_CompilerRT || !D.CCCIsCXX()) &&2398 !TC.getTriple().isAndroid() &&2399 !TC.getTriple().isOSCygMing() && !TC.getTriple().isOSAIX();2400 if (AsNeeded)2401 addAsNeededOption(TC, Args, CmdArgs, true);2402 2403 switch (UNW) {2404 case ToolChain::UNW_None:2405 return;2406 case ToolChain::UNW_Libgcc: {2407 if (LGT == LibGccType::StaticLibGcc)2408 CmdArgs.push_back("-lgcc_eh");2409 else2410 CmdArgs.push_back("-lgcc_s");2411 break;2412 }2413 case ToolChain::UNW_CompilerRT:2414 if (TC.getTriple().isOSAIX()) {2415 // AIX only has libunwind as a shared library. So do not pass2416 // anything in if -static is specified.2417 if (LGT != LibGccType::StaticLibGcc)2418 CmdArgs.push_back("-lunwind");2419 } else if (LGT == LibGccType::StaticLibGcc) {2420 CmdArgs.push_back("-l:libunwind.a");2421 } else if (LGT == LibGccType::SharedLibGcc) {2422 if (TC.getTriple().isOSCygMing())2423 CmdArgs.push_back("-l:libunwind.dll.a");2424 else2425 CmdArgs.push_back("-l:libunwind.so");2426 } else {2427 // Let the linker choose between libunwind.so and libunwind.a2428 // depending on what's available, and depending on the -static flag2429 CmdArgs.push_back("-lunwind");2430 }2431 break;2432 }2433 2434 if (AsNeeded)2435 addAsNeededOption(TC, Args, CmdArgs, false);2436}2437 2438static void AddLibgcc(const ToolChain &TC, const Driver &D,2439 ArgStringList &CmdArgs, const ArgList &Args) {2440 LibGccType LGT = getLibGccType(TC, D, Args);2441 if (LGT == LibGccType::StaticLibGcc ||2442 (LGT == LibGccType::UnspecifiedLibGcc && !D.CCCIsCXX()))2443 CmdArgs.push_back("-lgcc");2444 AddUnwindLibrary(TC, D, CmdArgs, Args);2445 if (LGT == LibGccType::SharedLibGcc ||2446 (LGT == LibGccType::UnspecifiedLibGcc && D.CCCIsCXX()))2447 CmdArgs.push_back("-lgcc");2448 // compiler-rt is needed after libgcc for flang on AArch64 for the2449 // __trampoline_setup symbol2450 if (D.IsFlangMode() && TC.getArch() == llvm::Triple::aarch64) {2451 CmdArgs.push_back("--as-needed");2452 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));2453 CmdArgs.push_back("--no-as-needed");2454 }2455}2456 2457void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D,2458 ArgStringList &CmdArgs, const ArgList &Args) {2459 // Make use of compiler-rt if --rtlib option is used2460 ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(Args);2461 2462 switch (RLT) {2463 case ToolChain::RLT_CompilerRT:2464 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));2465 AddUnwindLibrary(TC, D, CmdArgs, Args);2466 break;2467 case ToolChain::RLT_Libgcc:2468 // Make sure libgcc is not used under MSVC environment by default2469 if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {2470 // Issue error diagnostic if libgcc is explicitly specified2471 // through command line as --rtlib option argument.2472 Arg *A = Args.getLastArg(options::OPT_rtlib_EQ);2473 if (A && A->getValue() != StringRef("platform")) {2474 TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)2475 << A->getValue() << "MSVC";2476 }2477 } else2478 AddLibgcc(TC, D, CmdArgs, Args);2479 break;2480 }2481 2482 // On Android, the unwinder uses dl_iterate_phdr (or one of2483 // dl_unwind_find_exidx/__gnu_Unwind_Find_exidx on arm32) from libdl.so. For2484 // statically-linked executables, these functions come from libc.a instead.2485 if (TC.getTriple().isAndroid() && !Args.hasArg(options::OPT_static) &&2486 !Args.hasArg(options::OPT_static_pie))2487 CmdArgs.push_back("-ldl");2488}2489 2490SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,2491 const InputInfo &Output,2492 const InputInfo &Input,2493 const Driver &D) {2494 const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);2495 if (!A && !D.CCPrintInternalStats)2496 return {};2497 2498 SmallString<128> StatsFile;2499 if (A) {2500 StringRef SaveStats = A->getValue();2501 if (SaveStats == "obj" && Output.isFilename()) {2502 StatsFile.assign(Output.getFilename());2503 llvm::sys::path::remove_filename(StatsFile);2504 } else if (SaveStats != "cwd") {2505 D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;2506 return {};2507 }2508 2509 StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());2510 llvm::sys::path::append(StatsFile, BaseName);2511 llvm::sys::path::replace_extension(StatsFile, "stats");2512 } else {2513 assert(D.CCPrintInternalStats);2514 StatsFile.assign(D.CCPrintInternalStatReportFilename.empty()2515 ? "-"2516 : D.CCPrintInternalStatReportFilename);2517 }2518 return StatsFile;2519}2520 2521void tools::addMultilibFlag(bool Enabled, const StringRef Flag,2522 Multilib::flags_list &Flags) {2523 assert(Flag.front() == '-');2524 if (Enabled) {2525 Flags.push_back(Flag.str());2526 } else {2527 Flags.push_back(("!" + Flag.substr(1)).str());2528 }2529}2530 2531void tools::addX86AlignBranchArgs(const Driver &D, const ArgList &Args,2532 ArgStringList &CmdArgs, bool IsLTO,2533 const StringRef PluginOptPrefix) {2534 auto addArg = [&, IsLTO](const Twine &Arg) {2535 if (IsLTO) {2536 assert(!PluginOptPrefix.empty() && "Cannot have empty PluginOptPrefix!");2537 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + Arg));2538 } else {2539 CmdArgs.push_back("-mllvm");2540 CmdArgs.push_back(Args.MakeArgString(Arg));2541 }2542 };2543 2544 if (Args.hasArg(options::OPT_mbranches_within_32B_boundaries)) {2545 addArg(Twine("-x86-branches-within-32B-boundaries"));2546 }2547 if (const Arg *A = Args.getLastArg(options::OPT_malign_branch_boundary_EQ)) {2548 StringRef Value = A->getValue();2549 unsigned Boundary;2550 if (Value.getAsInteger(10, Boundary) || Boundary < 16 ||2551 !llvm::isPowerOf2_64(Boundary)) {2552 D.Diag(diag::err_drv_invalid_argument_to_option)2553 << Value << A->getOption().getName();2554 } else {2555 addArg("-x86-align-branch-boundary=" + Twine(Boundary));2556 }2557 }2558 if (const Arg *A = Args.getLastArg(options::OPT_malign_branch_EQ)) {2559 std::string AlignBranch;2560 for (StringRef T : A->getValues()) {2561 if (T != "fused" && T != "jcc" && T != "jmp" && T != "call" &&2562 T != "ret" && T != "indirect")2563 D.Diag(diag::err_drv_invalid_malign_branch_EQ)2564 << T << "fused, jcc, jmp, call, ret, indirect";2565 if (!AlignBranch.empty())2566 AlignBranch += '+';2567 AlignBranch += T;2568 }2569 addArg("-x86-align-branch=" + Twine(AlignBranch));2570 }2571 if (const Arg *A = Args.getLastArg(options::OPT_mpad_max_prefix_size_EQ)) {2572 StringRef Value = A->getValue();2573 unsigned PrefixSize;2574 if (Value.getAsInteger(10, PrefixSize)) {2575 D.Diag(diag::err_drv_invalid_argument_to_option)2576 << Value << A->getOption().getName();2577 } else {2578 addArg("-x86-pad-max-prefix-size=" + Twine(PrefixSize));2579 }2580 }2581}2582 2583/// SDLSearch: Search for Static Device Library2584/// The search for SDL bitcode files is consistent with how static host2585/// libraries are discovered. That is, the -l option triggers a search for2586/// files in a set of directories called the LINKPATH. The host library search2587/// procedure looks for a specific filename in the LINKPATH. The filename for2588/// a host library is lib<libname>.a or lib<libname>.so. For SDLs, there is an2589/// ordered-set of filenames that are searched. We call this ordered-set of2590/// filenames as SEARCH-ORDER. Since an SDL can either be device-type specific,2591/// architecture specific, or generic across all architectures, a naming2592/// convention and search order is used where the file name embeds the2593/// architecture name <arch-name> (nvptx or amdgcn) and the GPU device type2594/// <device-name> such as sm_30 and gfx906. <device-name> is absent in case of2595/// device-independent SDLs. To reduce congestion in host library directories,2596/// the search first looks for files in the “libdevice” subdirectory. SDLs that2597/// are bc files begin with the prefix “lib”.2598///2599/// Machine-code SDLs can also be managed as an archive (*.a file). The2600/// convention has been to use the prefix “lib”. To avoid confusion with host2601/// archive libraries, we use prefix "libbc-" for the bitcode SDL archives.2602///2603static bool SDLSearch(const Driver &D, const llvm::opt::ArgList &DriverArgs,2604 llvm::opt::ArgStringList &CC1Args,2605 const SmallVectorImpl<std::string> &LibraryPaths,2606 StringRef Lib, StringRef Arch, StringRef Target,2607 bool isBitCodeSDL) {2608 SmallVector<std::string, 12> SDLs;2609 2610 std::string LibDeviceLoc = "/libdevice";2611 std::string LibBcPrefix = "/libbc-";2612 std::string LibPrefix = "/lib";2613 2614 if (isBitCodeSDL) {2615 // SEARCH-ORDER for Bitcode SDLs:2616 // libdevice/libbc-<libname>-<arch-name>-<device-type>.a2617 // libbc-<libname>-<arch-name>-<device-type>.a2618 // libdevice/libbc-<libname>-<arch-name>.a2619 // libbc-<libname>-<arch-name>.a2620 // libdevice/libbc-<libname>.a2621 // libbc-<libname>.a2622 // libdevice/lib<libname>-<arch-name>-<device-type>.bc2623 // lib<libname>-<arch-name>-<device-type>.bc2624 // libdevice/lib<libname>-<arch-name>.bc2625 // lib<libname>-<arch-name>.bc2626 // libdevice/lib<libname>.bc2627 // lib<libname>.bc2628 2629 for (StringRef Base : {LibBcPrefix, LibPrefix}) {2630 const auto *Ext = Base.contains(LibBcPrefix) ? ".a" : ".bc";2631 2632 for (auto Suffix : {Twine(Lib + "-" + Arch + "-" + Target).str(),2633 Twine(Lib + "-" + Arch).str(), Twine(Lib).str()}) {2634 SDLs.push_back(Twine(LibDeviceLoc + Base + Suffix + Ext).str());2635 SDLs.push_back(Twine(Base + Suffix + Ext).str());2636 }2637 }2638 } else {2639 // SEARCH-ORDER for Machine-code SDLs:2640 // libdevice/lib<libname>-<arch-name>-<device-type>.a2641 // lib<libname>-<arch-name>-<device-type>.a2642 // libdevice/lib<libname>-<arch-name>.a2643 // lib<libname>-<arch-name>.a2644 2645 const auto *Ext = ".a";2646 2647 for (auto Suffix : {Twine(Lib + "-" + Arch + "-" + Target).str(),2648 Twine(Lib + "-" + Arch).str()}) {2649 SDLs.push_back(Twine(LibDeviceLoc + LibPrefix + Suffix + Ext).str());2650 SDLs.push_back(Twine(LibPrefix + Suffix + Ext).str());2651 }2652 }2653 2654 // The CUDA toolchain does not use a global device llvm-link before the LLVM2655 // backend generates ptx. So currently, the use of bitcode SDL for nvptx is2656 // only possible with post-clang-cc1 linking. Clang cc1 has a feature that2657 // will link libraries after clang compilation while the LLVM IR is still in2658 // memory. This utilizes a clang cc1 option called “-mlink-builtin-bitcode”.2659 // This is a clang -cc1 option that is generated by the clang driver. The2660 // option value must a full path to an existing file.2661 bool FoundSDL = false;2662 for (auto LPath : LibraryPaths) {2663 for (auto SDL : SDLs) {2664 auto FullName = Twine(LPath + SDL).str();2665 if (llvm::sys::fs::exists(FullName)) {2666 CC1Args.push_back(DriverArgs.MakeArgString(FullName));2667 FoundSDL = true;2668 break;2669 }2670 }2671 if (FoundSDL)2672 break;2673 }2674 return FoundSDL;2675}2676 2677/// Search if a user provided archive file lib<libname>.a exists in any of2678/// the library paths. If so, add a new command to clang-offload-bundler to2679/// unbundle this archive and create a temporary device specific archive. Name2680/// of this SDL is passed to the llvm-link tool.2681static void GetSDLFromOffloadArchive(2682 Compilation &C, const Driver &D, const Tool &T, const JobAction &JA,2683 const InputInfoList &Inputs, const llvm::opt::ArgList &DriverArgs,2684 llvm::opt::ArgStringList &CC1Args,2685 const SmallVectorImpl<std::string> &LibraryPaths, StringRef Lib,2686 StringRef Arch, StringRef Target, bool isBitCodeSDL) {2687 2688 // We don't support bitcode archive bundles for nvptx2689 if (isBitCodeSDL && Arch.contains("nvptx"))2690 return;2691 2692 bool FoundAOB = false;2693 std::string ArchiveOfBundles;2694 2695 llvm::Triple Triple(D.getTargetTriple());2696 bool IsMSVC = Triple.isWindowsMSVCEnvironment();2697 auto Ext = IsMSVC ? ".lib" : ".a";2698 if (!Lib.starts_with(":") && !Lib.starts_with("-l")) {2699 if (llvm::sys::fs::exists(Lib)) {2700 ArchiveOfBundles = Lib;2701 FoundAOB = true;2702 }2703 } else {2704 Lib.consume_front("-l");2705 for (auto LPath : LibraryPaths) {2706 ArchiveOfBundles.clear();2707 auto LibFile = (Lib.starts_with(":") ? Lib.drop_front()2708 : IsMSVC ? Lib + Ext2709 : "lib" + Lib + Ext)2710 .str();2711 for (auto Prefix : {"/libdevice/", "/"}) {2712 auto AOB = Twine(LPath + Prefix + LibFile).str();2713 if (llvm::sys::fs::exists(AOB)) {2714 ArchiveOfBundles = AOB;2715 FoundAOB = true;2716 break;2717 }2718 }2719 if (FoundAOB)2720 break;2721 }2722 }2723 2724 if (!FoundAOB)2725 return;2726 2727 llvm::file_magic Magic;2728 auto EC = llvm::identify_magic(ArchiveOfBundles, Magic);2729 if (EC || Magic != llvm::file_magic::archive)2730 return;2731 2732 StringRef Prefix = isBitCodeSDL ? "libbc-" : "lib";2733 std::string OutputLib =2734 D.GetTemporaryPath(Twine(Prefix + llvm::sys::path::filename(Lib) + "-" +2735 Arch + "-" + Target)2736 .str(),2737 "a");2738 2739 C.addTempFile(C.getArgs().MakeArgString(OutputLib));2740 2741 SmallString<128> DeviceTriple;2742 DeviceTriple += Action::GetOffloadKindName(JA.getOffloadingDeviceKind());2743 DeviceTriple += '-';2744 std::string NormalizedTriple = T.getToolChain().getTriple().normalize(2745 llvm::Triple::CanonicalForm::FOUR_IDENT);2746 DeviceTriple += NormalizedTriple;2747 if (!Target.empty()) {2748 DeviceTriple += '-';2749 DeviceTriple += Target;2750 }2751 2752 std::string UnbundleArg("-unbundle");2753 std::string TypeArg("-type=a");2754 std::string InputArg("-input=" + ArchiveOfBundles);2755 std::string OffloadArg("-targets=" + std::string(DeviceTriple));2756 std::string OutputArg("-output=" + OutputLib);2757 2758 const char *UBProgram = DriverArgs.MakeArgString(2759 T.getToolChain().GetProgramPath("clang-offload-bundler"));2760 2761 ArgStringList UBArgs;2762 UBArgs.push_back(C.getArgs().MakeArgString(UnbundleArg));2763 UBArgs.push_back(C.getArgs().MakeArgString(TypeArg));2764 UBArgs.push_back(C.getArgs().MakeArgString(InputArg));2765 UBArgs.push_back(C.getArgs().MakeArgString(OffloadArg));2766 UBArgs.push_back(C.getArgs().MakeArgString(OutputArg));2767 2768 // Add this flag to not exit from clang-offload-bundler if no compatible2769 // code object is found in heterogenous archive library.2770 std::string AdditionalArgs("-allow-missing-bundles");2771 UBArgs.push_back(C.getArgs().MakeArgString(AdditionalArgs));2772 2773 // Add this flag to treat hip and hipv4 offload kinds as compatible with2774 // openmp offload kind while extracting code objects from a heterogenous2775 // archive library. Vice versa is also considered compatible.2776 std::string HipCompatibleArgs("-hip-openmp-compatible");2777 UBArgs.push_back(C.getArgs().MakeArgString(HipCompatibleArgs));2778 2779 C.addCommand(std::make_unique<Command>(2780 JA, T, ResponseFileSupport::AtFileCurCP(), UBProgram, UBArgs, Inputs,2781 InputInfo(&JA, C.getArgs().MakeArgString(OutputLib))));2782 2783 CC1Args.push_back(DriverArgs.MakeArgString(OutputLib));2784}2785 2786// Wrapper function used by driver for adding SDLs during link phase.2787void tools::AddStaticDeviceLibsLinking(Compilation &C, const Tool &T,2788 const JobAction &JA,2789 const InputInfoList &Inputs,2790 const llvm::opt::ArgList &DriverArgs,2791 llvm::opt::ArgStringList &CC1Args,2792 StringRef Arch, StringRef Target,2793 bool isBitCodeSDL) {2794 AddStaticDeviceLibs(&C, &T, &JA, &Inputs, C.getDriver(), DriverArgs, CC1Args,2795 Arch, Target, isBitCodeSDL);2796}2797 2798// User defined Static Device Libraries(SDLs) can be passed to clang for2799// offloading GPU compilers. Like static host libraries, the use of a SDL is2800// specified with the -l command line option. The primary difference between2801// host and SDLs is the filenames for SDLs (refer SEARCH-ORDER for Bitcode SDLs2802// and SEARCH-ORDER for Machine-code SDLs for the naming convention).2803// SDLs are of following types:2804//2805// * Bitcode SDLs: They can either be a *.bc file or an archive of *.bc files.2806// For NVPTX, these libraries are post-clang linked following each2807// compilation. For AMDGPU, these libraries are linked one time2808// during the application link phase.2809//2810// * Machine-code SDLs: They are archive files. For AMDGPU, the process for2811// machine code SDLs is still in development. But they will be linked2812// by the LLVM tool lld.2813//2814// * Bundled objects that contain both host and device codes: Bundled objects2815// may also contain library code compiled from source. For NVPTX, the2816// bundle contains cubin. For AMDGPU, the bundle contains bitcode.2817//2818// For Bitcode and Machine-code SDLs, current compiler toolchains hardcode the2819// inclusion of specific SDLs such as math libraries and the OpenMP device2820// library libomptarget.2821void tools::AddStaticDeviceLibs(Compilation *C, const Tool *T,2822 const JobAction *JA,2823 const InputInfoList *Inputs, const Driver &D,2824 const llvm::opt::ArgList &DriverArgs,2825 llvm::opt::ArgStringList &CC1Args,2826 StringRef Arch, StringRef Target,2827 bool isBitCodeSDL) {2828 2829 SmallVector<std::string, 8> LibraryPaths;2830 // Add search directories from LIBRARY_PATH env variable2831 std::optional<std::string> LibPath =2832 llvm::sys::Process::GetEnv("LIBRARY_PATH");2833 if (LibPath) {2834 SmallVector<StringRef, 8> Frags;2835 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};2836 llvm::SplitString(*LibPath, Frags, EnvPathSeparatorStr);2837 for (StringRef Path : Frags)2838 LibraryPaths.emplace_back(Path.trim());2839 }2840 2841 // Add directories from user-specified -L options2842 for (std::string Search_Dir : DriverArgs.getAllArgValues(options::OPT_L))2843 LibraryPaths.emplace_back(Search_Dir);2844 2845 // Add path to lib-debug folders2846 SmallString<256> DefaultLibPath = llvm::sys::path::parent_path(D.Dir);2847 llvm::sys::path::append(DefaultLibPath, CLANG_INSTALL_LIBDIR_BASENAME);2848 LibraryPaths.emplace_back(DefaultLibPath.c_str());2849 2850 // Build list of Static Device Libraries SDLs specified by -l option2851 llvm::SmallSet<std::string, 16> SDLNames;2852 static const StringRef HostOnlyArchives[] = {2853 "omp", "cudart", "m", "gcc", "gcc_s", "pthread", "hip_hcc"};2854 for (auto SDLName : DriverArgs.getAllArgValues(options::OPT_l)) {2855 if (!llvm::is_contained(HostOnlyArchives, SDLName)) {2856 SDLNames.insert(std::string("-l") + SDLName);2857 }2858 }2859 2860 for (auto Input : DriverArgs.getAllArgValues(options::OPT_INPUT)) {2861 auto FileName = StringRef(Input);2862 // Clang treats any unknown file types as archives and passes them to the2863 // linker. Files with extension 'lib' are classified as TY_Object by clang2864 // but they are usually archives. It is OK if the file is not really an2865 // archive since GetSDLFromOffloadArchive will check the magic of the file2866 // and only unbundle it if it is really an archive.2867 const StringRef LibFileExt = ".lib";2868 if (!llvm::sys::path::has_extension(FileName) ||2869 types::lookupTypeForExtension(2870 llvm::sys::path::extension(FileName).drop_front()) ==2871 types::TY_INVALID ||2872 llvm::sys::path::extension(FileName) == LibFileExt)2873 SDLNames.insert(Input);2874 }2875 2876 // The search stops as soon as an SDL file is found. The driver then provides2877 // the full filename of the SDL to the llvm-link command. If no SDL is found2878 // after searching each LINKPATH with SEARCH-ORDER, it is possible that an2879 // archive file lib<libname>.a exists and may contain bundled object files.2880 for (auto SDLName : SDLNames) {2881 // This is the only call to SDLSearch2882 if (!SDLSearch(D, DriverArgs, CC1Args, LibraryPaths, SDLName, Arch, Target,2883 isBitCodeSDL)) {2884 GetSDLFromOffloadArchive(*C, D, *T, *JA, *Inputs, DriverArgs, CC1Args,2885 LibraryPaths, SDLName, Arch, Target,2886 isBitCodeSDL);2887 }2888 }2889}2890 2891static llvm::opt::Arg *2892getAMDGPUCodeObjectArgument(const Driver &D, const llvm::opt::ArgList &Args) {2893 return Args.getLastArg(options::OPT_mcode_object_version_EQ);2894}2895 2896void tools::checkAMDGPUCodeObjectVersion(const Driver &D,2897 const llvm::opt::ArgList &Args) {2898 const unsigned MinCodeObjVer = 4;2899 const unsigned MaxCodeObjVer = 6;2900 2901 if (auto *CodeObjArg = getAMDGPUCodeObjectArgument(D, Args)) {2902 if (CodeObjArg->getOption().getID() ==2903 options::OPT_mcode_object_version_EQ) {2904 unsigned CodeObjVer = MaxCodeObjVer;2905 auto Remnant =2906 StringRef(CodeObjArg->getValue()).getAsInteger(0, CodeObjVer);2907 if (Remnant || CodeObjVer < MinCodeObjVer || CodeObjVer > MaxCodeObjVer)2908 D.Diag(diag::err_drv_invalid_int_value)2909 << CodeObjArg->getAsString(Args) << CodeObjArg->getValue();2910 }2911 }2912}2913 2914unsigned tools::getAMDGPUCodeObjectVersion(const Driver &D,2915 const llvm::opt::ArgList &Args) {2916 unsigned CodeObjVer = 6; // default2917 if (auto *CodeObjArg = getAMDGPUCodeObjectArgument(D, Args))2918 StringRef(CodeObjArg->getValue()).getAsInteger(0, CodeObjVer);2919 return CodeObjVer;2920}2921 2922bool tools::haveAMDGPUCodeObjectVersionArgument(2923 const Driver &D, const llvm::opt::ArgList &Args) {2924 return getAMDGPUCodeObjectArgument(D, Args) != nullptr;2925}2926 2927void tools::addMachineOutlinerArgs(const Driver &D,2928 const llvm::opt::ArgList &Args,2929 llvm::opt::ArgStringList &CmdArgs,2930 const llvm::Triple &Triple, bool IsLTO,2931 const StringRef PluginOptPrefix) {2932 auto addArg = [&, IsLTO](const Twine &Arg) {2933 if (IsLTO) {2934 assert(!PluginOptPrefix.empty() && "Cannot have empty PluginOptPrefix!");2935 CmdArgs.push_back(Args.MakeArgString(Twine(PluginOptPrefix) + Arg));2936 } else {2937 CmdArgs.push_back("-mllvm");2938 CmdArgs.push_back(Args.MakeArgString(Arg));2939 }2940 };2941 2942 if (Arg *A = Args.getLastArg(options::OPT_moutline,2943 options::OPT_mno_outline)) {2944 if (A->getOption().matches(options::OPT_moutline)) {2945 // We only support -moutline in AArch64 and ARM targets right now. If2946 // we're not compiling for these, emit a warning and ignore the flag.2947 // Otherwise, add the proper mllvm flags.2948 if (!(Triple.isARM() || Triple.isThumb() || Triple.isAArch64())) {2949 D.Diag(diag::warn_drv_moutline_unsupported_opt) << Triple.getArchName();2950 } else {2951 addArg(Twine("-enable-machine-outliner"));2952 }2953 } else {2954 // Disable all outlining behaviour.2955 addArg(Twine("-enable-machine-outliner=never"));2956 }2957 }2958 2959 auto *CodeGenDataGenArg =2960 Args.getLastArg(options::OPT_fcodegen_data_generate_EQ);2961 auto *CodeGenDataUseArg = Args.getLastArg(options::OPT_fcodegen_data_use_EQ);2962 2963 // We only allow one of them to be specified.2964 if (CodeGenDataGenArg && CodeGenDataUseArg)2965 D.Diag(diag::err_drv_argument_not_allowed_with)2966 << CodeGenDataGenArg->getAsString(Args)2967 << CodeGenDataUseArg->getAsString(Args);2968 2969 // For codegen data gen, the output file is passed to the linker2970 // while a boolean flag is passed to the LLVM backend.2971 if (CodeGenDataGenArg)2972 addArg(Twine("-codegen-data-generate"));2973 2974 // For codegen data use, the input file is passed to the LLVM backend.2975 if (CodeGenDataUseArg)2976 addArg(Twine("-codegen-data-use-path=") + CodeGenDataUseArg->getValue());2977}2978 2979void tools::addOpenMPDeviceRTL(const Driver &D,2980 const llvm::opt::ArgList &DriverArgs,2981 llvm::opt::ArgStringList &CC1Args,2982 StringRef BitcodeSuffix,2983 const llvm::Triple &Triple,2984 const ToolChain &HostTC) {2985 SmallVector<StringRef, 8> LibraryPaths;2986 2987 // Add user defined library paths from LIBRARY_PATH.2988 std::optional<std::string> LibPath =2989 llvm::sys::Process::GetEnv("LIBRARY_PATH");2990 if (LibPath) {2991 SmallVector<StringRef, 8> Frags;2992 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};2993 llvm::SplitString(*LibPath, Frags, EnvPathSeparatorStr);2994 for (StringRef Path : Frags)2995 LibraryPaths.emplace_back(Path.trim());2996 }2997 2998 // Check all of the standard library search paths used by the compiler.2999 for (const auto &LibPath : HostTC.getFilePaths())3000 LibraryPaths.emplace_back(LibPath);3001 3002 // Check the target specific library path for the triple as well.3003 SmallString<128> P(D.Dir);3004 llvm::sys::path::append(P, "..", "lib", Triple.getTriple());3005 LibraryPaths.emplace_back(P);3006 3007 OptSpecifier LibomptargetBCPathOpt =3008 Triple.isAMDGCN() ? options::OPT_libomptarget_amdgpu_bc_path_EQ3009 : Triple.isNVPTX() ? options::OPT_libomptarget_nvptx_bc_path_EQ3010 : options::OPT_libomptarget_spirv_bc_path_EQ;3011 3012 StringRef ArchPrefix = Triple.isAMDGCN() ? "amdgpu"3013 : Triple.isNVPTX() ? "nvptx"3014 : "spirv";3015 std::string LibOmpTargetName = ("libomptarget-" + ArchPrefix + ".bc").str();3016 3017 // First check whether user specifies bc library3018 if (const Arg *A = DriverArgs.getLastArg(LibomptargetBCPathOpt)) {3019 SmallString<128> LibOmpTargetFile(A->getValue());3020 if (llvm::sys::fs::exists(LibOmpTargetFile) &&3021 llvm::sys::fs::is_directory(LibOmpTargetFile)) {3022 llvm::sys::path::append(LibOmpTargetFile, LibOmpTargetName);3023 }3024 3025 if (llvm::sys::fs::exists(LibOmpTargetFile)) {3026 CC1Args.push_back("-mlink-builtin-bitcode");3027 CC1Args.push_back(DriverArgs.MakeArgString(LibOmpTargetFile));3028 } else {3029 D.Diag(diag::err_drv_omp_offload_target_bcruntime_not_found)3030 << LibOmpTargetFile;3031 }3032 } else {3033 bool FoundBCLibrary = false;3034 3035 for (StringRef LibraryPath : LibraryPaths) {3036 SmallString<128> LibOmpTargetFile(LibraryPath);3037 llvm::sys::path::append(LibOmpTargetFile, LibOmpTargetName);3038 if (llvm::sys::fs::exists(LibOmpTargetFile)) {3039 CC1Args.push_back("-mlink-builtin-bitcode");3040 CC1Args.push_back(DriverArgs.MakeArgString(LibOmpTargetFile));3041 FoundBCLibrary = true;3042 break;3043 }3044 }3045 3046 if (!FoundBCLibrary)3047 D.Diag(diag::err_drv_omp_offload_target_missingbcruntime)3048 << LibOmpTargetName << ArchPrefix;3049 }3050}3051void tools::addHIPRuntimeLibArgs(const ToolChain &TC, Compilation &C,3052 const llvm::opt::ArgList &Args,3053 llvm::opt::ArgStringList &CmdArgs) {3054 if ((C.getActiveOffloadKinds() & Action::OFK_HIP) &&3055 (!Args.hasArg(options::OPT_nostdlib) ||3056 TC.getTriple().isKnownWindowsMSVCEnvironment()) &&3057 !Args.hasArg(options::OPT_no_hip_rt) && !Args.hasArg(options::OPT_r)) {3058 TC.AddHIPRuntimeLibArgs(Args, CmdArgs);3059 } else {3060 // Claim "no HIP libraries" arguments if any3061 for (auto *Arg : Args.filtered(options::OPT_no_hip_rt)) {3062 Arg->claim();3063 }3064 }3065}3066 3067void tools::addOpenCLBuiltinsLib(const Driver &D,3068 const llvm::opt::ArgList &DriverArgs,3069 llvm::opt::ArgStringList &CC1Args) {3070 // Check whether user specifies a libclc bytecode library3071 const Arg *A = DriverArgs.getLastArg(options::OPT_libclc_lib_EQ);3072 if (!A)3073 return;3074 3075 // Find device libraries in <LLVM_DIR>/lib/clang/<ver>/lib/libclc/3076 SmallString<128> LibclcPath(D.ResourceDir);3077 llvm::sys::path::append(LibclcPath, "lib", "libclc");3078 3079 // If the namespec is of the form :filename, search for that file.3080 StringRef LibclcNamespec(A->getValue());3081 bool FilenameSearch = LibclcNamespec.consume_front(":");3082 SmallString<128> LibclcTargetFile(LibclcNamespec);3083 3084 if (FilenameSearch && llvm::sys::fs::exists(LibclcTargetFile)) {3085 CC1Args.push_back("-mlink-builtin-bitcode");3086 CC1Args.push_back(DriverArgs.MakeArgString(LibclcTargetFile));3087 } else {3088 // Search the library paths for the file3089 if (!FilenameSearch)3090 LibclcTargetFile += ".bc";3091 3092 llvm::sys::path::append(LibclcPath, LibclcTargetFile);3093 if (llvm::sys::fs::exists(LibclcPath)) {3094 CC1Args.push_back("-mlink-builtin-bitcode");3095 CC1Args.push_back(DriverArgs.MakeArgString(LibclcPath));3096 } else {3097 // Since the user requested a library, if we haven't one then report an3098 // error.3099 D.Diag(diag::err_drv_libclc_not_found) << LibclcTargetFile;3100 }3101 }3102}3103 3104void tools::addOutlineAtomicsArgs(const Driver &D, const ToolChain &TC,3105 const llvm::opt::ArgList &Args,3106 llvm::opt::ArgStringList &CmdArgs,3107 const llvm::Triple &Triple) {3108 if (Arg *A = Args.getLastArg(options::OPT_moutline_atomics,3109 options::OPT_mno_outline_atomics)) {3110 // Option -moutline-atomics supported for AArch64 target only.3111 if (!Triple.isAArch64()) {3112 D.Diag(diag::warn_drv_moutline_atomics_unsupported_opt)3113 << Triple.getArchName() << A->getOption().getName();3114 } else {3115 if (A->getOption().matches(options::OPT_moutline_atomics)) {3116 CmdArgs.push_back("-target-feature");3117 CmdArgs.push_back("+outline-atomics");3118 } else {3119 CmdArgs.push_back("-target-feature");3120 CmdArgs.push_back("-outline-atomics");3121 }3122 }3123 } else if (Triple.isAArch64() && TC.IsAArch64OutlineAtomicsDefault(Args)) {3124 CmdArgs.push_back("-target-feature");3125 CmdArgs.push_back("+outline-atomics");3126 }3127}3128 3129void tools::addOffloadCompressArgs(const llvm::opt::ArgList &TCArgs,3130 llvm::opt::ArgStringList &CmdArgs) {3131 if (TCArgs.hasFlag(options::OPT_offload_compress,3132 options::OPT_no_offload_compress, false))3133 CmdArgs.push_back("--compress");3134 if (TCArgs.hasArg(options::OPT_v))3135 CmdArgs.push_back("--verbose");3136 if (auto *Arg = TCArgs.getLastArg(options::OPT_offload_compression_level_EQ))3137 CmdArgs.push_back(3138 TCArgs.MakeArgString(Twine("--compression-level=") + Arg->getValue()));3139}3140 3141void tools::addMCModel(const Driver &D, const llvm::opt::ArgList &Args,3142 const llvm::Triple &Triple,3143 const llvm::Reloc::Model &RelocationModel,3144 llvm::opt::ArgStringList &CmdArgs) {3145 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {3146 StringRef CM = A->getValue();3147 bool Ok = false;3148 if (Triple.isOSAIX() && CM == "medium")3149 CM = "large";3150 if (Triple.isAArch64(64)) {3151 Ok = CM == "tiny" || CM == "small" || CM == "large";3152 if (CM == "large" && !Triple.isOSBinFormatMachO() &&3153 RelocationModel != llvm::Reloc::Static)3154 D.Diag(diag::err_drv_argument_only_allowed_with)3155 << A->getAsString(Args) << "-fno-pic";3156 } else if (Triple.isLoongArch()) {3157 if (CM == "extreme" &&3158 Args.hasFlagNoClaim(options::OPT_fplt, options::OPT_fno_plt, false))3159 D.Diag(diag::err_drv_argument_not_allowed_with)3160 << A->getAsString(Args) << "-fplt";3161 Ok = CM == "normal" || CM == "medium" || CM == "extreme";3162 // Convert to LLVM recognizable names.3163 if (Ok)3164 CM = llvm::StringSwitch<StringRef>(CM)3165 .Case("normal", "small")3166 .Case("extreme", "large")3167 .Default(CM);3168 } else if (Triple.isPPC64() || Triple.isOSAIX()) {3169 Ok = CM == "small" || CM == "medium" || CM == "large";3170 } else if (Triple.isRISCV()) {3171 // Large code model is disallowed to be used with PIC code model.3172 if (CM == "large" && RelocationModel != llvm::Reloc::Static)3173 D.Diag(diag::err_drv_argument_not_allowed_with)3174 << A->getAsString(Args) << "-fpic";3175 if (CM == "medlow")3176 CM = "small";3177 else if (CM == "medany")3178 CM = "medium";3179 Ok = CM == "small" || CM == "medium" ||3180 (CM == "large" && Triple.isRISCV64());3181 } else if (Triple.getArch() == llvm::Triple::x86_64) {3182 Ok = llvm::is_contained({"small", "kernel", "medium", "large"}, CM);3183 } else if (Triple.isNVPTX() || Triple.isAMDGPU() || Triple.isSPIRV()) {3184 // NVPTX/AMDGPU/SPIRV does not care about the code model and will accept3185 // whatever works for the host.3186 Ok = true;3187 } else if (Triple.isSPARC64()) {3188 if (CM == "medlow")3189 CM = "small";3190 else if (CM == "medmid")3191 CM = "medium";3192 else if (CM == "medany")3193 CM = "large";3194 Ok = CM == "small" || CM == "medium" || CM == "large";3195 } else if (Triple.getArch() == llvm::Triple::lanai) {3196 Ok = llvm::is_contained({"small", "medium", "large"}, CM);3197 }3198 if (Ok) {3199 CmdArgs.push_back(Args.MakeArgString("-mcmodel=" + CM));3200 } else {3201 D.Diag(diag::err_drv_unsupported_option_argument_for_target)3202 << A->getSpelling() << CM << Triple.getTriple();3203 }3204 }3205 3206 if (Triple.getArch() == llvm::Triple::x86_64) {3207 bool IsMediumCM = false;3208 bool IsLargeCM = false;3209 if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {3210 IsMediumCM = StringRef(A->getValue()) == "medium";3211 IsLargeCM = StringRef(A->getValue()) == "large";3212 }3213 if (Arg *A = Args.getLastArg(options::OPT_mlarge_data_threshold_EQ)) {3214 if (!IsMediumCM && !IsLargeCM) {3215 D.Diag(diag::warn_drv_large_data_threshold_invalid_code_model)3216 << A->getOption().getRenderName();3217 } else {3218 A->render(Args, CmdArgs);3219 }3220 } else if (IsMediumCM) {3221 CmdArgs.push_back("-mlarge-data-threshold=65536");3222 } else if (IsLargeCM) {3223 CmdArgs.push_back("-mlarge-data-threshold=0");3224 }3225 }3226}3227 3228void tools::handleColorDiagnosticsArgs(const Driver &D, const ArgList &Args,3229 ArgStringList &CmdArgs) {3230 // Color diagnostics are parsed by the driver directly from argv and later3231 // re-parsed to construct this job; claim any possible color diagnostic here3232 // to avoid warn_drv_unused_argument and diagnose bad3233 // OPT_fdiagnostics_color_EQ values.3234 Args.getLastArg(options::OPT_fcolor_diagnostics,3235 options::OPT_fno_color_diagnostics);3236 if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_color_EQ)) {3237 StringRef Value(A->getValue());3238 if (Value != "always" && Value != "never" && Value != "auto")3239 D.Diag(diag::err_drv_invalid_argument_to_option)3240 << Value << A->getOption().getName();3241 }3242 3243 if (D.getDiags().getDiagnosticOptions().ShowColors)3244 CmdArgs.push_back("-fcolor-diagnostics");3245}3246 3247void tools::escapeSpacesAndBackslashes(const char *Arg,3248 llvm::SmallVectorImpl<char> &Res) {3249 for (; *Arg; ++Arg) {3250 switch (*Arg) {3251 default:3252 break;3253 case ' ':3254 case '\\':3255 Res.push_back('\\');3256 break;3257 }3258 Res.push_back(*Arg);3259 }3260}3261 3262const char *tools::renderEscapedCommandLine(const ToolChain &TC,3263 const llvm::opt::ArgList &Args) {3264 const Driver &D = TC.getDriver();3265 const char *Exec = D.getClangProgramPath();3266 3267 llvm::opt::ArgStringList OriginalArgs;3268 for (const auto &Arg : Args)3269 Arg->render(Args, OriginalArgs);3270 3271 llvm::SmallString<256> Flags;3272 escapeSpacesAndBackslashes(Exec, Flags);3273 for (const char *OriginalArg : OriginalArgs) {3274 llvm::SmallString<128> EscapedArg;3275 escapeSpacesAndBackslashes(OriginalArg, EscapedArg);3276 Flags += " ";3277 Flags += EscapedArg;3278 }3279 3280 return Args.MakeArgString(Flags);3281}3282 3283bool tools::shouldRecordCommandLine(const ToolChain &TC,3284 const llvm::opt::ArgList &Args,3285 bool &FRecordCommandLine,3286 bool &GRecordCommandLine) {3287 const Driver &D = TC.getDriver();3288 const llvm::Triple &Triple = TC.getEffectiveTriple();3289 const std::string &TripleStr = Triple.getTriple();3290 3291 FRecordCommandLine =3292 Args.hasFlag(options::OPT_frecord_command_line,3293 options::OPT_fno_record_command_line, false);3294 GRecordCommandLine =3295 Args.hasFlag(options::OPT_grecord_command_line,3296 options::OPT_gno_record_command_line, false);3297 if (FRecordCommandLine && !Triple.isOSBinFormatELF() &&3298 !Triple.isOSBinFormatXCOFF() && !Triple.isOSBinFormatMachO())3299 D.Diag(diag::err_drv_unsupported_opt_for_target)3300 << Args.getLastArg(options::OPT_frecord_command_line)->getAsString(Args)3301 << TripleStr;3302 3303 return FRecordCommandLine || TC.UseDwarfDebugFlags() || GRecordCommandLine;3304}3305 3306void tools::renderCommonIntegerOverflowOptions(const ArgList &Args,3307 ArgStringList &CmdArgs) {3308 bool use_fwrapv = false;3309 bool use_fwrapv_pointer = false;3310 for (const Arg *A : Args.filtered(3311 options::OPT_fstrict_overflow, options::OPT_fno_strict_overflow,3312 options::OPT_fwrapv, options::OPT_fno_wrapv,3313 options::OPT_fwrapv_pointer, options::OPT_fno_wrapv_pointer)) {3314 A->claim();3315 switch (A->getOption().getID()) {3316 case options::OPT_fstrict_overflow:3317 use_fwrapv = false;3318 use_fwrapv_pointer = false;3319 break;3320 case options::OPT_fno_strict_overflow:3321 use_fwrapv = true;3322 use_fwrapv_pointer = true;3323 break;3324 case options::OPT_fwrapv:3325 use_fwrapv = true;3326 break;3327 case options::OPT_fno_wrapv:3328 use_fwrapv = false;3329 break;3330 case options::OPT_fwrapv_pointer:3331 use_fwrapv_pointer = true;3332 break;3333 case options::OPT_fno_wrapv_pointer:3334 use_fwrapv_pointer = false;3335 break;3336 }3337 }3338 3339 if (use_fwrapv)3340 CmdArgs.push_back("-fwrapv");3341 if (use_fwrapv_pointer)3342 CmdArgs.push_back("-fwrapv-pointer");3343}3344 3345/// Vectorize at all optimization levels greater than 1 except for -Oz.3346/// For -Oz the loop vectorizer is disabled, while the slp vectorizer is3347/// enabled.3348bool tools::shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {3349 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {3350 if (A->getOption().matches(options::OPT_O4) ||3351 A->getOption().matches(options::OPT_Ofast))3352 return true;3353 3354 if (A->getOption().matches(options::OPT_O0))3355 return false;3356 3357 assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");3358 3359 // Vectorize -Os.3360 StringRef S(A->getValue());3361 if (S == "s")3362 return true;3363 3364 // Don't vectorize -Oz, unless it's the slp vectorizer.3365 if (S == "z")3366 return isSlpVec;3367 3368 unsigned OptLevel = 0;3369 if (S.getAsInteger(10, OptLevel))3370 return false;3371 3372 return OptLevel > 1;3373 }3374 3375 return false;3376}3377 3378void tools::handleVectorizeLoopsArgs(const ArgList &Args,3379 ArgStringList &CmdArgs) {3380 bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);3381 if (Args.hasFlag(options::OPT_fvectorize, options::OPT_fno_vectorize,3382 EnableVec))3383 CmdArgs.push_back("-vectorize-loops");3384}3385 3386void tools::handleVectorizeSLPArgs(const ArgList &Args,3387 ArgStringList &CmdArgs) {3388 bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);3389 if (Args.hasFlag(options::OPT_fslp_vectorize, options::OPT_fno_slp_vectorize,3390 EnableSLPVec))3391 CmdArgs.push_back("-vectorize-slp");3392}3393 3394void tools::handleInterchangeLoopsArgs(const ArgList &Args,3395 ArgStringList &CmdArgs) {3396 if (Args.hasFlag(options::OPT_floop_interchange,3397 options::OPT_fno_loop_interchange, false))3398 CmdArgs.push_back("-floop-interchange");3399}3400 3401std::string tools::complexRangeKindToStr(LangOptions::ComplexRangeKind Range) {3402 switch (Range) {3403 case LangOptions::ComplexRangeKind::CX_Full:3404 return "full";3405 break;3406 case LangOptions::ComplexRangeKind::CX_Basic:3407 return "basic";3408 break;3409 case LangOptions::ComplexRangeKind::CX_Improved:3410 return "improved";3411 break;3412 case LangOptions::ComplexRangeKind::CX_Promoted:3413 return "promoted";3414 break;3415 case LangOptions::ComplexRangeKind::CX_None:3416 return "none";3417 break;3418 }3419 llvm_unreachable("Fully covered switch above");3420}3421 3422std::string3423tools::renderComplexRangeOption(LangOptionsBase::ComplexRangeKind Range) {3424 std::string ComplexRangeStr = complexRangeKindToStr(Range);3425 if (!ComplexRangeStr.empty())3426 return "-complex-range=" + ComplexRangeStr;3427 return ComplexRangeStr;3428}3429 3430static void emitComplexRangeDiag(const Driver &D, StringRef LastOpt,3431 LangOptions::ComplexRangeKind Range,3432 StringRef NewOpt,3433 LangOptions::ComplexRangeKind NewRange) {3434 // Do not emit a warning if NewOpt overrides LastOpt in the following cases.3435 //3436 // | LastOpt | NewOpt |3437 // |-----------------------|-----------------------|3438 // | -fcx-limited-range | -fno-cx-limited-range |3439 // | -fno-cx-limited-range | -fcx-limited-range |3440 // | -fcx-fortran-rules | -fno-cx-fortran-rules |3441 // | -fno-cx-fortran-rules | -fcx-fortran-rules |3442 // | -ffast-math | -fno-fast-math |3443 // | -ffp-model= | -ffast-math |3444 // | -ffp-model= | -fno-fast-math |3445 // | -ffp-model= | -ffp-model= |3446 // | -fcomplex-arithmetic= | -fcomplex-arithmetic= |3447 if (LastOpt == NewOpt || NewOpt.empty() || LastOpt.empty() ||3448 (LastOpt == "-fcx-limited-range" && NewOpt == "-fno-cx-limited-range") ||3449 (LastOpt == "-fno-cx-limited-range" && NewOpt == "-fcx-limited-range") ||3450 (LastOpt == "-fcx-fortran-rules" && NewOpt == "-fno-cx-fortran-rules") ||3451 (LastOpt == "-fno-cx-fortran-rules" && NewOpt == "-fcx-fortran-rules") ||3452 (LastOpt == "-ffast-math" && NewOpt == "-fno-fast-math") ||3453 (LastOpt.starts_with("-ffp-model=") && NewOpt == "-ffast-math") ||3454 (LastOpt.starts_with("-ffp-model=") && NewOpt == "-fno-fast-math") ||3455 (LastOpt.starts_with("-ffp-model=") &&3456 NewOpt.starts_with("-ffp-model=")) ||3457 (LastOpt.starts_with("-fcomplex-arithmetic=") &&3458 NewOpt.starts_with("-fcomplex-arithmetic=")))3459 return;3460 3461 D.Diag(clang::diag::warn_drv_overriding_complex_range)3462 << LastOpt << NewOpt << complexRangeKindToStr(Range)3463 << complexRangeKindToStr(NewRange);3464}3465 3466void tools::setComplexRange(const Driver &D, StringRef NewOpt,3467 LangOptions::ComplexRangeKind NewRange,3468 StringRef &LastOpt,3469 LangOptions::ComplexRangeKind &Range) {3470 // Warn if user overrides the previously set complex number3471 // multiplication/division option.3472 if (Range != LangOptions::ComplexRangeKind::CX_None && Range != NewRange)3473 emitComplexRangeDiag(D, LastOpt, Range, NewOpt, NewRange);3474 LastOpt = NewOpt;3475 Range = NewRange;3476}3477