72 lines · cpp
1//===----- LLJITDumpObjects.cpp - How to dump JIT'd objects with LLJIT ----===//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 "llvm/ADT/StringMap.h"10#include "llvm/ExecutionEngine/Orc/DebugUtils.h"11#include "llvm/ExecutionEngine/Orc/LLJIT.h"12#include "llvm/ExecutionEngine/Orc/ObjectTransformLayer.h"13#include "llvm/Support/InitLLVM.h"14#include "llvm/Support/TargetSelect.h"15#include "llvm/Support/raw_ostream.h"16 17#include "../ExampleModules.h"18 19using namespace llvm;20using namespace llvm::orc;21 22ExitOnError ExitOnErr;23 24static cl::opt<bool> DumpJITdObjects("dump-jitted-objects",25 cl::desc("dump jitted objects"),26 cl::Optional, cl::init(true));27 28static cl::opt<std::string> DumpDir("dump-dir",29 cl::desc("directory to dump objects to"),30 cl::Optional, cl::init(""));31 32static cl::opt<std::string>33 DumpFileStem("dump-file-stem", cl::desc("Override default dump names"),34 cl::Optional, cl::init(""));35 36int main(int argc, char *argv[]) {37 // Initialize LLVM.38 InitLLVM X(argc, argv);39 40 InitializeNativeTarget();41 InitializeNativeTargetAsmPrinter();42 43 cl::ParseCommandLineOptions(argc, argv, "LLJITDumpObjects");44 ExitOnErr.setBanner(std::string(argv[0]) + ": ");45 46 outs()47 << "Usage notes:\n"48 " Use -debug-only=orc on debug builds to see log messages of objects "49 "being dumped\n"50 " Specify -dump-dir to specify a dump directory\n"51 " Specify -dump-file-stem to override the dump file stem\n"52 " Specify -dump-jitted-objects=false to disable dumping\n";53 54 auto J = ExitOnErr(LLJITBuilder().create());55 56 if (DumpJITdObjects)57 J->getObjTransformLayer().setTransform(DumpObjects(DumpDir, DumpFileStem));58 59 auto M = ExitOnErr(parseExampleModule(Add1Example, "add1"));60 61 ExitOnErr(J->addIRModule(std::move(M)));62 63 // Look up the JIT'd function, cast it to a function pointer, then call it.64 auto Add1Addr = ExitOnErr(J->lookup("add1"));65 int (*Add1)(int) = Add1Addr.toPtr<int(int)>();66 67 int Result = Add1(42);68 outs() << "add1(42) = " << Result << "\n";69 70 return 0;71}72