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//===- BitcodeWriterPass.cpp - Bitcode writing pass -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// BitcodeWriterPass implementation.
//
//===----------------------------------------------------------------------===//
#include "llvm/Bitcode/BitcodeWriterPass.h"
#include "llvm/Analysis/ModuleSummaryAnalysis.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
using namespace llvm;
PreservedAnalyses BitcodeWriterPass::run(Module &M, ModuleAnalysisManager &) {
std::unique_ptr<ModuleSummaryIndex> Index;
if (EmitSummaryIndex)
Index = ModuleSummaryIndexBuilder(&M).takeIndex();
WriteBitcodeToFile(&M, OS, ShouldPreserveUseListOrder, Index.get(),
EmitModuleHash);
return PreservedAnalyses::all();
}
namespace {
class WriteBitcodePass : public ModulePass {
raw_ostream &OS; // raw_ostream to print on
bool ShouldPreserveUseListOrder;
bool EmitSummaryIndex;
bool EmitModuleHash;
public:
static char ID; // Pass identification, replacement for typeid
WriteBitcodePass() : ModulePass(ID), OS(dbgs()) {
initializeWriteBitcodePassPass(*PassRegistry::getPassRegistry());
}
explicit WriteBitcodePass(raw_ostream &o, bool ShouldPreserveUseListOrder,
bool EmitSummaryIndex, bool EmitModuleHash)
: ModulePass(ID), OS(o),
ShouldPreserveUseListOrder(ShouldPreserveUseListOrder),
EmitSummaryIndex(EmitSummaryIndex), EmitModuleHash(EmitModuleHash) {
initializeWriteBitcodePassPass(*PassRegistry::getPassRegistry());
}
const char *getPassName() const override { return "Bitcode Writer"; }
bool runOnModule(Module &M) override {
const ModuleSummaryIndex *Index =
EmitSummaryIndex
? &(getAnalysis<ModuleSummaryIndexWrapperPass>().getIndex())
: nullptr;
WriteBitcodeToFile(&M, OS, ShouldPreserveUseListOrder, Index,
EmitModuleHash);
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
if (EmitSummaryIndex)
AU.addRequired<ModuleSummaryIndexWrapperPass>();
}
};
}
char WriteBitcodePass::ID = 0;
INITIALIZE_PASS_BEGIN(WriteBitcodePass, "write-bitcode", "Write Bitcode", false,
true)
INITIALIZE_PASS_DEPENDENCY(ModuleSummaryIndexWrapperPass)
INITIALIZE_PASS_END(WriteBitcodePass, "write-bitcode", "Write Bitcode", false,
true)
ModulePass *llvm::createBitcodeWriterPass(raw_ostream &Str,
bool ShouldPreserveUseListOrder,
bool EmitSummaryIndex, bool EmitModuleHash) {
return new WriteBitcodePass(Str, ShouldPreserveUseListOrder,
EmitSummaryIndex, EmitModuleHash);
}
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