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//===-- LTOPartition.cpp - Parition Merged Module --------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "LTOPartition.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Path.h"
#include "llvm/Transforms/Utils/ValueMapper.h"
#include "llvm/Transforms/Utils/Cloning.h"
using namespace llvm;
using namespace lto;
// /////////////////////////////////////////////////////////////////////////////
//
// Implementation of IPOPartition and IPOPartMgr
//
// /////////////////////////////////////////////////////////////////////////////
//
IPOPartition::IPOPartition(Module *M, const char *NameWoExt, IPOFileMgr &FM) :
Mod(0), Ctx(0), IRFile(0), ObjFile(0), FileNameWoExt(NameWoExt), FileMgr(FM) {
}
IPOFile &IPOPartition::getIRFile() const {
if (IRFile)
return *IRFile;
else {
std::string FN(FileNameWoExt + ".bc");
return *(IRFile = FileMgr.createIRFile(FN.c_str()));
}
}
IPOFile &IPOPartition::getObjFile() const {
if (ObjFile)
return *ObjFile;
else {
std::string FN(FileNameWoExt + ".o");
return *(ObjFile = FileMgr.createObjFile(FN.c_str()));
}
}
bool IPOPartition::saveBitCode() {
if (!Mod) {
// The bit-code have already saved in disk.
return true;
}
IPOFile &F = getIRFile();
if (F.errOccur())
return false;
raw_fd_ostream OF(F.getPath().c_str(), F.getLastErrStr(),
sys::fs::F_Binary);
WriteBitcodeToFile(Mod, OF);
OF.close();
Mod = 0;
delete Ctx;
Ctx = 0;
return !F.errOccur();
}
bool IPOPartition::loadBitCode() {
if (Mod)
return true;
IPOFile &F = getIRFile();
if (F.errOccur())
return false;
Ctx = new LLVMContext;
error_code &EC = F.getLastErrCode();
std::string &ErrMsg = F.getLastErrStr();
OwningPtr<MemoryBuffer> Buf;
if (error_code ec = MemoryBuffer::getFile(F.getPath(), Buf, -1, false)) {
EC = ec;
ErrMsg += ec.message();
return false;
}
Mod = ParseBitcodeFile(Buf.get(), *Ctx, &ErrMsg);
return Mod != 0;
}
IPOPartition *IPOPartMgr::createIPOPart(Module *M) {
std::string PartName;
raw_string_ostream OS(PartName);
OS << "part" << NextPartId++;
IPOPartition *P = new IPOPartition(M, OS.str().c_str(), FileMgr);
P->Mod = M;
IPOParts.push_back(P);
return P;
}
// ///////////////////////////////////////////////////////////////////////////
//
// Implementation of IPOFile and IPOFileMgr
//
// ///////////////////////////////////////////////////////////////////////////
//
IPOFile::IPOFile(const char *DirName, const char *BaseName, bool KeepFile)
: Fname(BaseName), Keep(KeepFile) {
// Concatenate dirname and basename
StringRef D(DirName);
SmallVector<char, 64> Path(D.begin(), D.end());
sys::path::append(Path, Twine(BaseName));
Fpath = StringRef(Path.data(), Path.size());
}
IPOFileMgr::IPOFileMgr() {
IRFiles.reserve(20);
ObjFiles.reserve(20);
OtherFiles.reserve(8);
KeepWorkDir = false;
WorkDirCreated = false;
}
bool IPOFileMgr::createWorkDir(std::string &ErrorInfo) {
if (WorkDirCreated)
return true;
error_code EC;
if (WorkDir.empty()) {
// If the workdir is not specified, then create workdir under current
// directory.
//
SmallString<128> D;
if (sys::fs::current_path(D) != error_code::success()) {
ErrorInfo += "fail to get current directory";
return false;
}
sys::path::append(D, "llvmipo");
sys::fs::make_absolute(D);
SmallVector<char, 64> ResPath;
EC = sys::fs::createUniqueDirectory(Twine(StringRef(D.data(), D.size())),
ResPath);
WorkDir = StringRef(ResPath.data(), ResPath.size());
} else {
bool Exist;
EC = sys::fs::create_directory(Twine(WorkDir), Exist);
}
if (EC == error_code::success()) {
WorkDirCreated = true;
return true;
}
return false;
}
IPOFile *IPOFileMgr::createIRFile(const char *Name) {
IPOFile *F = CreateFile(Name);
IRFiles.push_back(F);
return F;
}
IPOFile *IPOFileMgr::createObjFile(const char *Name) {
IPOFile *F = CreateFile(Name);
ObjFiles.push_back(F);
return F;
}
IPOFile *IPOFileMgr::createMakefile(const char *Name) {
IPOFile *F = CreateFile(Name);
OtherFiles.push_back(F);
return F;
}
void IPOFileMgr::removeAllUnneededFiles() {
FileNameVect ToRm;
getFilesNeedToRemove(ToRm);
for (SmallVector<const char *, 4>::iterator I = ToRm.begin(), E = ToRm.end();
I != E; I++) {
const char *FN = *I;
sys::fs::file_status Stat;
if (sys::fs::status(Twine(FN), Stat) != error_code::success())
continue;
uint32_t Dummy;
if (sys::fs::is_directory(FN))
sys::fs::remove_all(Twine(FN), Dummy);
else
sys::fs::remove(Twine(FN));
}
}
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