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//===------ DumpModulePass.cpp ----------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Write a module to a file.
//
//===----------------------------------------------------------------------===//
#include "polly/Support/DumpModulePass.h"
#include "llvm/IR/Module.h"
#include "llvm/Pass.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/ToolOutputFile.h"
#define DEBUG_TYPE "polly-dump-module"
using namespace llvm;
using namespace polly;
namespace {
static void runDumpModule(llvm::Module &M, StringRef Filename, bool IsSuffix) {
std::string Dumpfile;
if (IsSuffix) {
StringRef ModuleName = M.getName();
StringRef Stem = sys::path::stem(ModuleName);
Dumpfile = (Twine(Stem) + Filename + ".ll").str();
} else {
Dumpfile = Filename.str();
}
LLVM_DEBUG(dbgs() << "Dumping module to " << Dumpfile << '\n');
std::unique_ptr<ToolOutputFile> Out;
std::error_code EC;
Out.reset(new ToolOutputFile(Dumpfile, EC, sys::fs::OF_None));
if (EC) {
errs() << EC.message() << '\n';
return;
}
M.print(Out->os(), nullptr);
Out->keep();
}
class DumpModuleWrapperPass : public ModulePass {
private:
DumpModuleWrapperPass(const DumpModuleWrapperPass &) = delete;
const DumpModuleWrapperPass &
operator=(const DumpModuleWrapperPass &) = delete;
std::string Filename;
bool IsSuffix;
public:
static char ID;
/// This constructor is used e.g. if using opt -polly-dump-module.
///
/// Provide a default suffix to not overwrite the original file.
explicit DumpModuleWrapperPass()
: ModulePass(ID), Filename("-dump"), IsSuffix(true) {}
explicit DumpModuleWrapperPass(std::string Filename, bool IsSuffix)
: ModulePass(ID), Filename(std::move(Filename)), IsSuffix(IsSuffix) {}
/// @name ModulePass interface
//@{
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override {
AU.setPreservesAll();
}
virtual bool runOnModule(llvm::Module &M) override {
runDumpModule(M, Filename, IsSuffix);
return false;
}
//@}
};
char DumpModuleWrapperPass::ID;
} // namespace
ModulePass *polly::createDumpModuleWrapperPass(std::string Filename,
bool IsSuffix) {
return new DumpModuleWrapperPass(std::move(Filename), IsSuffix);
}
llvm::PreservedAnalyses DumpModulePass::run(llvm::Module &M,
llvm::ModuleAnalysisManager &AM) {
runDumpModule(M, Filename, IsSuffix);
return PreservedAnalyses::all();
}
INITIALIZE_PASS_BEGIN(DumpModuleWrapperPass, "polly-dump-module",
"Polly - Dump Module", false, false)
INITIALIZE_PASS_END(DumpModuleWrapperPass, "polly-dump-module",
"Polly - Dump Module", false, false)
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