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-rw-r--r--tools/lto/LTOCodeGenerator.cpp122
1 files changed, 75 insertions, 47 deletions
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index 465ccb4..758227d 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -24,12 +24,14 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
+#include "llvm/InitializePasses.h"
#include "llvm/Linker.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/PassManager.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/MemoryBuffer.h"
@@ -76,6 +78,7 @@ LTOCodeGenerator::LTOCodeGenerator()
InitializeAllTargets();
InitializeAllTargetMCs();
InitializeAllAsmPrinters();
+ initializeLTOPasses();
}
LTOCodeGenerator::~LTOCodeGenerator() {
@@ -88,6 +91,36 @@ LTOCodeGenerator::~LTOCodeGenerator() {
free(*I);
}
+// Initialize LTO passes. Please keep this funciton in sync with
+// PassManagerBuilder::populateLTOPassManager(), and make sure all LTO
+// passes are initialized.
+//
+void LTOCodeGenerator::initializeLTOPasses() {
+ PassRegistry &R = *PassRegistry::getPassRegistry();
+
+ initializeInternalizePassPass(R);
+ initializeIPSCCPPass(R);
+ initializeGlobalOptPass(R);
+ initializeConstantMergePass(R);
+ initializeDAHPass(R);
+ initializeInstCombinerPass(R);
+ initializeSimpleInlinerPass(R);
+ initializePruneEHPass(R);
+ initializeGlobalDCEPass(R);
+ initializeArgPromotionPass(R);
+ initializeJumpThreadingPass(R);
+ initializeSROAPass(R);
+ initializeSROA_DTPass(R);
+ initializeSROA_SSAUpPass(R);
+ initializeFunctionAttrsPass(R);
+ initializeGlobalsModRefPass(R);
+ initializeLICMPass(R);
+ initializeGVNPass(R);
+ initializeMemCpyOptPass(R);
+ initializeDCEPass(R);
+ initializeCFGSimplifyPassPass(R);
+}
+
bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) {
bool ret = _linker.linkInModule(mod->getLLVVMModule(), &errMsg);
@@ -95,51 +128,50 @@ bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) {
for (int i = 0, e = undefs.size(); i != e; ++i)
_asmUndefinedRefs[undefs[i]] = 1;
- return ret;
+ return !ret;
}
-bool LTOCodeGenerator::setDebugInfo(lto_debug_model debug,
- std::string& errMsg) {
+void LTOCodeGenerator::setDebugInfo(lto_debug_model debug) {
switch (debug) {
case LTO_DEBUG_MODEL_NONE:
_emitDwarfDebugInfo = false;
- return false;
+ return;
case LTO_DEBUG_MODEL_DWARF:
_emitDwarfDebugInfo = true;
- return false;
+ return;
}
llvm_unreachable("Unknown debug format!");
}
-bool LTOCodeGenerator::setCodePICModel(lto_codegen_model model,
- std::string& errMsg) {
+void LTOCodeGenerator::setCodePICModel(lto_codegen_model model) {
switch (model) {
case LTO_CODEGEN_PIC_MODEL_STATIC:
case LTO_CODEGEN_PIC_MODEL_DYNAMIC:
case LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC:
_codeModel = model;
- return false;
+ return;
}
llvm_unreachable("Unknown PIC model!");
}
bool LTOCodeGenerator::writeMergedModules(const char *path,
std::string &errMsg) {
- if (determineTarget(errMsg))
- return true;
+ if (!determineTarget(errMsg))
+ return false;
- // mark which symbols can not be internalized
- applyScopeRestrictions();
+ // Run the verifier on the merged modules.
+ PassManager passes;
+ passes.add(createVerifierPass());
+ passes.run(*_linker.getModule());
// create output file
std::string ErrInfo;
- tool_output_file Out(path, ErrInfo,
- raw_fd_ostream::F_Binary);
+ tool_output_file Out(path, ErrInfo, sys::fs::F_Binary);
if (!ErrInfo.empty()) {
errMsg = "could not open bitcode file for writing: ";
errMsg += path;
- return true;
+ return false;
}
// write bitcode to it
@@ -150,52 +182,48 @@ bool LTOCodeGenerator::writeMergedModules(const char *path,
errMsg = "could not write bitcode file: ";
errMsg += path;
Out.os().clear_error();
- return true;
+ return false;
}
Out.keep();
- return false;
+ return true;
}
bool LTOCodeGenerator::compile_to_file(const char** name, std::string& errMsg) {
// make unique temp .o file to put generated object file
- sys::PathWithStatus uniqueObjPath("lto-llvm.o");
- if (uniqueObjPath.createTemporaryFileOnDisk(false, &errMsg)) {
- uniqueObjPath.eraseFromDisk();
- return true;
+ SmallString<128> Filename;
+ int FD;
+ error_code EC = sys::fs::createTemporaryFile("lto-llvm", "o", FD, Filename);
+ if (EC) {
+ errMsg = EC.message();
+ return false;
}
- sys::RemoveFileOnSignal(uniqueObjPath);
// generate object file
- bool genResult = false;
- tool_output_file objFile(uniqueObjPath.c_str(), errMsg);
- if (!errMsg.empty()) {
- uniqueObjPath.eraseFromDisk();
- return true;
- }
+ tool_output_file objFile(Filename.c_str(), FD);
- genResult = this->generateObjectFile(objFile.os(), errMsg);
+ bool genResult = generateObjectFile(objFile.os(), errMsg);
objFile.os().close();
if (objFile.os().has_error()) {
objFile.os().clear_error();
- uniqueObjPath.eraseFromDisk();
- return true;
+ sys::fs::remove(Twine(Filename));
+ return false;
}
objFile.keep();
- if (genResult) {
- uniqueObjPath.eraseFromDisk();
- return true;
+ if (!genResult) {
+ sys::fs::remove(Twine(Filename));
+ return false;
}
- _nativeObjectPath = uniqueObjPath.str();
+ _nativeObjectPath = Filename.c_str();
*name = _nativeObjectPath.c_str();
- return false;
+ return true;
}
const void* LTOCodeGenerator::compile(size_t* length, std::string& errMsg) {
const char *name;
- if (compile_to_file(&name, errMsg))
+ if (!compile_to_file(&name, errMsg))
return NULL;
// remove old buffer if compile() called twice
@@ -205,13 +233,13 @@ const void* LTOCodeGenerator::compile(size_t* length, std::string& errMsg) {
OwningPtr<MemoryBuffer> BuffPtr;
if (error_code ec = MemoryBuffer::getFile(name, BuffPtr, -1, false)) {
errMsg = ec.message();
- sys::Path(_nativeObjectPath).eraseFromDisk();
+ sys::fs::remove(_nativeObjectPath);
return NULL;
}
_nativeObjectFile = BuffPtr.take();
// remove temp files
- sys::Path(_nativeObjectPath).eraseFromDisk();
+ sys::fs::remove(_nativeObjectPath);
// return buffer, unless error
if (_nativeObjectFile == NULL)
@@ -222,7 +250,7 @@ const void* LTOCodeGenerator::compile(size_t* length, std::string& errMsg) {
bool LTOCodeGenerator::determineTarget(std::string &errMsg) {
if (_target != NULL)
- return false;
+ return true;
// if options were requested, set them
if (!_codegenOptions.empty())
@@ -237,7 +265,7 @@ bool LTOCodeGenerator::determineTarget(std::string &errMsg) {
// create target machine from info for merged modules
const Target *march = TargetRegistry::lookupTarget(TripleStr, errMsg);
if (march == NULL)
- return true;
+ return false;
// The relocation model is actually a static member of TargetMachine and
// needs to be set before the TargetMachine is instantiated.
@@ -270,7 +298,7 @@ bool LTOCodeGenerator::determineTarget(std::string &errMsg) {
_target = march->createTargetMachine(TripleStr, _mCpu, FeatureStr, Options,
RelocModel, CodeModel::Default,
CodeGenOpt::Aggressive);
- return false;
+ return true;
}
void LTOCodeGenerator::
@@ -309,7 +337,7 @@ void LTOCodeGenerator::applyScopeRestrictions() {
passes.add(createVerifierPass());
// mark which symbols can not be internalized
- MCContext Context(*_target->getMCAsmInfo(), *_target->getRegisterInfo(),NULL);
+ MCContext Context(_target->getMCAsmInfo(), _target->getRegisterInfo(), NULL);
Mangler mangler(Context, _target);
std::vector<const char*> mustPreserveList;
SmallPtrSet<GlobalValue*, 8> asmUsed;
@@ -361,8 +389,8 @@ void LTOCodeGenerator::applyScopeRestrictions() {
/// Optimize merged modules using various IPO passes
bool LTOCodeGenerator::generateObjectFile(raw_ostream &out,
std::string &errMsg) {
- if (this->determineTarget(errMsg))
- return true;
+ if (!this->determineTarget(errMsg))
+ return false;
Module* mergedModule = _linker.getModule();
@@ -405,7 +433,7 @@ bool LTOCodeGenerator::generateObjectFile(raw_ostream &out,
if (_target->addPassesToEmitFile(codeGenPasses, Out,
TargetMachine::CGFT_ObjectFile)) {
errMsg = "target file type not supported";
- return true;
+ return false;
}
// Run our queue of passes all at once now, efficiently.
@@ -414,7 +442,7 @@ bool LTOCodeGenerator::generateObjectFile(raw_ostream &out,
// Run the code generator, and write assembly file
codeGenPasses.run(*mergedModule);
- return false; // success
+ return true;
}
/// setCodeGenDebugOptions - Set codegen debugging options to aid in debugging
generated by cgit v1.1 at 2025-07-03 12:22:21 +0000