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