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72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
//===----- LLJITDumpObjects.cpp - How to dump JIT'd objects with LLJIT ----===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ExecutionEngine/Orc/DebugUtils.h"
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#include "llvm/ExecutionEngine/Orc/LLJIT.h"
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#include "llvm/ExecutionEngine/Orc/ObjectTransformLayer.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/raw_ostream.h"
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#include "../ExampleModules.h"
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using namespace llvm;
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using namespace llvm::orc;
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ExitOnError ExitOnErr;
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cl::opt<bool> DumpJITdObjects("dump-jitted-objects",
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cl::desc("dump jitted objects"), cl::Optional,
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cl::init(true));
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cl::opt<std::string> DumpDir("dump-dir",
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cl::desc("directory to dump objects to"),
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cl::Optional, cl::init(""));
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cl::opt<std::string> DumpFileStem("dump-file-stem",
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cl::desc("Override default dump names"),
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cl::Optional, cl::init(""));
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int main(int argc, char *argv[]) {
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// Initialize LLVM.
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InitLLVM X(argc, argv);
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InitializeNativeTarget();
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InitializeNativeTargetAsmPrinter();
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cl::ParseCommandLineOptions(argc, argv, "LLJITDumpObjects");
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ExitOnErr.setBanner(std::string(argv[0]) + ": ");
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outs()
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<< "Usage notes:\n"
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" Use -debug-only=orc on debug builds to see log messages of objects "
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"being dumped\n"
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" Specify -dump-dir to specify a dump directory\n"
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" Specify -dump-file-stem to override the dump file stem\n"
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" Specify -dump-jitted-objects=false to disable dumping\n";
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auto J = ExitOnErr(LLJITBuilder().create());
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if (DumpJITdObjects)
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J->getObjTransformLayer().setTransform(DumpObjects(DumpDir, DumpFileStem));
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auto M = ExitOnErr(parseExampleModule(Add1Example, "add1"));
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ExitOnErr(J->addIRModule(std::move(M)));
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// Look up the JIT'd function, cast it to a function pointer, then call it.
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auto Add1Sym = ExitOnErr(J->lookup("add1"));
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int (*Add1)(int) = (int (*)(int))Add1Sym.getAddress();
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int Result = Add1(42);
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outs() << "add1(42) = " << Result << "\n";
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return 0;
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}
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