#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Mangler.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.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"
#include "llvm/Support/Signals.h"
}
LTOCodeGenerator::LTOCodeGenerator()
- : Context(getGlobalContext()), IRLinker(new Module("ld-temp.o", Context)) {
- initialize();
+ : Context(getGlobalContext()),
+ MergedModule(new Module("ld-temp.o", Context)),
+ IRLinker(MergedModule.get()) {
+ initializeLTOPasses();
}
LTOCodeGenerator::LTOCodeGenerator(std::unique_ptr<LLVMContext> Context)
: OwnedContext(std::move(Context)), Context(*OwnedContext),
- IRLinker(new Module("ld-temp.o", *OwnedContext)) {
- initialize();
-}
-
-void LTOCodeGenerator::initialize() {
- TargetMach = nullptr;
- EmitDwarfDebugInfo = false;
- ScopeRestrictionsDone = false;
- CodeModel = LTO_CODEGEN_PIC_MODEL_DEFAULT;
- DiagHandler = nullptr;
- DiagContext = nullptr;
-
+ MergedModule(new Module("ld-temp.o", *OwnedContext)),
+ IRLinker(MergedModule.get()) {
initializeLTOPasses();
}
-LTOCodeGenerator::~LTOCodeGenerator() {
- delete TargetMach;
- TargetMach = nullptr;
-
- IRLinker.deleteModule();
-
- for (std::vector<char *>::iterator I = CodegenOptions.begin(),
- E = CodegenOptions.end();
- I != E; ++I)
- free(*I);
-}
+LTOCodeGenerator::~LTOCodeGenerator() {}
// Initialize LTO passes. Please keep this funciton in sync with
// PassManagerBuilder::populateLTOPassManager(), and make sure all LTO
return !ret;
}
+void LTOCodeGenerator::setModule(std::unique_ptr<LTOModule> Mod) {
+ assert(&Mod->getModule().getContext() == &Context &&
+ "Expected module in same context");
+
+ AsmUndefinedRefs.clear();
+
+ MergedModule = Mod->takeModule();
+ IRLinker.setModule(MergedModule.get());
+
+ const std::vector<const char*> &Undefs = Mod->getAsmUndefinedRefs();
+ for (int I = 0, E = Undefs.size(); I != E; ++I)
+ AsmUndefinedRefs[Undefs[I]] = 1;
+}
+
void LTOCodeGenerator::setTargetOptions(TargetOptions options) {
Options = options;
}
llvm_unreachable("Unknown debug format!");
}
-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:
- case LTO_CODEGEN_PIC_MODEL_DEFAULT:
- CodeModel = model;
- return;
+void LTOCodeGenerator::setOptLevel(unsigned level) {
+ OptLevel = level;
+ switch (OptLevel) {
+ case 0:
+ CGOptLevel = CodeGenOpt::None;
+ break;
+ case 1:
+ CGOptLevel = CodeGenOpt::Less;
+ break;
+ case 2:
+ CGOptLevel = CodeGenOpt::Default;
+ break;
+ case 3:
+ CGOptLevel = CodeGenOpt::Aggressive;
+ break;
}
- llvm_unreachable("Unknown PIC model!");
}
bool LTOCodeGenerator::writeMergedModules(const char *path,
}
// write bitcode to it
- WriteBitcodeToFile(IRLinker.getModule(), Out.os());
+ WriteBitcodeToFile(MergedModule.get(), Out.os(), ShouldEmbedUselists);
Out.os().close();
if (Out.os().has_error()) {
return true;
}
-const void *LTOCodeGenerator::compileOptimized(size_t *length,
- std::string &errMsg) {
+std::unique_ptr<MemoryBuffer>
+LTOCodeGenerator::compileOptimized(std::string &errMsg) {
const char *name;
if (!compileOptimizedToFile(&name, errMsg))
return nullptr;
sys::fs::remove(NativeObjectPath);
return nullptr;
}
- NativeObjectFile = std::move(*BufferOrErr);
// remove temp files
sys::fs::remove(NativeObjectPath);
- // return buffer, unless error
- if (!NativeObjectFile)
- return nullptr;
- *length = NativeObjectFile->getBufferSize();
- return NativeObjectFile->getBufferStart();
+ return std::move(*BufferOrErr);
}
bool LTOCodeGenerator::compile_to_file(const char **name,
- bool disableOpt,
bool disableInline,
bool disableGVNLoadPRE,
bool disableVectorization,
std::string &errMsg) {
- if (!optimize(disableOpt, disableInline, disableGVNLoadPRE,
+ if (!optimize(disableInline, disableGVNLoadPRE,
disableVectorization, errMsg))
return false;
return compileOptimizedToFile(name, errMsg);
}
-const void* LTOCodeGenerator::compile(size_t *length,
- bool disableOpt,
- bool disableInline,
- bool disableGVNLoadPRE,
- bool disableVectorization,
- std::string &errMsg) {
- if (!optimize(disableOpt, disableInline, disableGVNLoadPRE,
+std::unique_ptr<MemoryBuffer>
+LTOCodeGenerator::compile(bool disableInline, bool disableGVNLoadPRE,
+ bool disableVectorization, std::string &errMsg) {
+ if (!optimize(disableInline, disableGVNLoadPRE,
disableVectorization, errMsg))
return nullptr;
- return compileOptimized(length, errMsg);
+ return compileOptimized(errMsg);
}
bool LTOCodeGenerator::determineTarget(std::string &errMsg) {
if (TargetMach)
return true;
- std::string TripleStr = IRLinker.getModule()->getTargetTriple();
- if (TripleStr.empty())
+ std::string TripleStr = MergedModule->getTargetTriple();
+ if (TripleStr.empty()) {
TripleStr = sys::getDefaultTargetTriple();
+ MergedModule->setTargetTriple(TripleStr);
+ }
llvm::Triple Triple(TripleStr);
// create target machine from info for merged modules
if (!march)
return false;
- // The relocation model is actually a static member of TargetMachine and
- // needs to be set before the TargetMachine is instantiated.
- Reloc::Model RelocModel = Reloc::Default;
- switch (CodeModel) {
- case LTO_CODEGEN_PIC_MODEL_STATIC:
- RelocModel = Reloc::Static;
- break;
- case LTO_CODEGEN_PIC_MODEL_DYNAMIC:
- RelocModel = Reloc::PIC_;
- break;
- case LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC:
- RelocModel = Reloc::DynamicNoPIC;
- break;
- case LTO_CODEGEN_PIC_MODEL_DEFAULT:
- // RelocModel is already the default, so leave it that way.
- break;
- }
-
// Construct LTOModule, hand over ownership of module and target. Use MAttr as
// the default set of features.
SubtargetFeatures Features(MAttr);
Features.getDefaultSubtargetFeatures(Triple);
- std::string FeatureStr = Features.getString();
+ FeatureStr = Features.getString();
// Set a default CPU for Darwin triples.
if (MCpu.empty() && Triple.isOSDarwin()) {
if (Triple.getArch() == llvm::Triple::x86_64)
MCpu = "cyclone";
}
- TargetMach = march->createTargetMachine(TripleStr, MCpu, FeatureStr, Options,
- RelocModel, CodeModel::Default,
- CodeGenOpt::Aggressive);
+ TargetMach.reset(march->createTargetMachine(TripleStr, MCpu, FeatureStr,
+ Options, RelocModel,
+ CodeModel::Default, CGOptLevel));
return true;
}
}
void LTOCodeGenerator::applyScopeRestrictions() {
- if (ScopeRestrictionsDone)
+ if (ScopeRestrictionsDone || !ShouldInternalize)
return;
- Module *mergedModule = IRLinker.getModule();
// Start off with a verification pass.
- PassManager passes;
+ legacy::PassManager passes;
passes.add(createVerifierPass());
- passes.add(createDebugInfoVerifierPass());
// mark which symbols can not be internalized
- Mangler Mangler(TargetMach->getDataLayout());
+ Mangler Mangler;
std::vector<const char*> MustPreserveList;
SmallPtrSet<GlobalValue*, 8> AsmUsed;
std::vector<StringRef> Libcalls;
TargetLibraryInfoImpl TLII(Triple(TargetMach->getTargetTriple()));
TargetLibraryInfo TLI(TLII);
- accumulateAndSortLibcalls(Libcalls, TLI, *mergedModule, *TargetMach);
+ accumulateAndSortLibcalls(Libcalls, TLI, *MergedModule, *TargetMach);
- for (Module::iterator f = mergedModule->begin(),
- e = mergedModule->end(); f != e; ++f)
- applyRestriction(*f, Libcalls, MustPreserveList, AsmUsed, Mangler);
- for (Module::global_iterator v = mergedModule->global_begin(),
- e = mergedModule->global_end(); v != e; ++v)
- applyRestriction(*v, Libcalls, MustPreserveList, AsmUsed, Mangler);
- for (Module::alias_iterator a = mergedModule->alias_begin(),
- e = mergedModule->alias_end(); a != e; ++a)
- applyRestriction(*a, Libcalls, MustPreserveList, AsmUsed, Mangler);
+ for (Function &f : *MergedModule)
+ applyRestriction(f, Libcalls, MustPreserveList, AsmUsed, Mangler);
+ for (GlobalVariable &v : MergedModule->globals())
+ applyRestriction(v, Libcalls, MustPreserveList, AsmUsed, Mangler);
+ for (GlobalAlias &a : MergedModule->aliases())
+ applyRestriction(a, Libcalls, MustPreserveList, AsmUsed, Mangler);
GlobalVariable *LLVMCompilerUsed =
- mergedModule->getGlobalVariable("llvm.compiler.used");
+ MergedModule->getGlobalVariable("llvm.compiler.used");
findUsedValues(LLVMCompilerUsed, AsmUsed);
if (LLVMCompilerUsed)
LLVMCompilerUsed->eraseFromParent();
llvm::ArrayType *ATy = llvm::ArrayType::get(i8PTy, asmUsed2.size());
LLVMCompilerUsed =
- new llvm::GlobalVariable(*mergedModule, ATy, false,
+ new llvm::GlobalVariable(*MergedModule, ATy, false,
llvm::GlobalValue::AppendingLinkage,
llvm::ConstantArray::get(ATy, asmUsed2),
"llvm.compiler.used");
passes.add(createInternalizePass(MustPreserveList));
// apply scope restrictions
- passes.run(*mergedModule);
+ passes.run(*MergedModule);
ScopeRestrictionsDone = true;
}
/// Optimize merged modules using various IPO passes
-bool LTOCodeGenerator::optimize(bool DisableOpt,
- bool DisableInline,
+bool LTOCodeGenerator::optimize(bool DisableInline,
bool DisableGVNLoadPRE,
bool DisableVectorization,
std::string &errMsg) {
if (!this->determineTarget(errMsg))
return false;
- Module *mergedModule = IRLinker.getModule();
-
// Mark which symbols can not be internalized
this->applyScopeRestrictions();
// Instantiate the pass manager to organize the passes.
- PassManager passes;
+ legacy::PassManager passes;
// Add an appropriate DataLayout instance for this module...
- mergedModule->setDataLayout(TargetMach->getDataLayout());
+ MergedModule->setDataLayout(TargetMach->createDataLayout());
- passes.add(new DataLayoutPass());
passes.add(
createTargetTransformInfoWrapperPass(TargetMach->getTargetIRAnalysis()));
if (!DisableInline)
PMB.Inliner = createFunctionInliningPass();
PMB.LibraryInfo = new TargetLibraryInfoImpl(TargetTriple);
- if (DisableOpt)
- PMB.OptLevel = 0;
+ PMB.OptLevel = OptLevel;
PMB.VerifyInput = true;
PMB.VerifyOutput = true;
PMB.populateLTOPassManager(passes);
// Run our queue of passes all at once now, efficiently.
- passes.run(*mergedModule);
+ passes.run(*MergedModule);
return true;
}
-bool LTOCodeGenerator::compileOptimized(raw_ostream &out, std::string &errMsg) {
+bool LTOCodeGenerator::compileOptimized(raw_pwrite_stream &out,
+ std::string &errMsg) {
if (!this->determineTarget(errMsg))
return false;
- Module *mergedModule = IRLinker.getModule();
-
- // Mark which symbols can not be internalized
- this->applyScopeRestrictions();
-
- PassManager codeGenPasses;
-
- codeGenPasses.add(new DataLayoutPass());
-
- formatted_raw_ostream Out(out);
+ legacy::PassManager codeGenPasses;
// If the bitcode files contain ARC code and were compiled with optimization,
// the ObjCARCContractPass must be run, so do it unconditionally here.
codeGenPasses.add(createObjCARCContractPass());
- if (TargetMach->addPassesToEmitFile(codeGenPasses, Out,
+ if (TargetMach->addPassesToEmitFile(codeGenPasses, out,
TargetMachine::CGFT_ObjectFile)) {
errMsg = "target file type not supported";
return false;
}
- // Run the code generator, and write assembly file
- codeGenPasses.run(*mergedModule);
+ // Run the code generator, and write object file
+ codeGenPasses.run(*MergedModule);
return true;
}
/// LTO problems.
void LTOCodeGenerator::setCodeGenDebugOptions(const char *options) {
for (std::pair<StringRef, StringRef> o = getToken(options);
- !o.first.empty(); o = getToken(o.second)) {
- // ParseCommandLineOptions() expects argv[0] to be program name. Lazily add
- // that.
- if (CodegenOptions.empty())
- CodegenOptions.push_back(strdup("libLLVMLTO"));
- CodegenOptions.push_back(strdup(o.first.str().c_str()));
- }
+ !o.first.empty(); o = getToken(o.second))
+ CodegenOptions.push_back(o.first);
}
void LTOCodeGenerator::parseCodeGenDebugOptions() {
// if options were requested, set them
- if (!CodegenOptions.empty())
- cl::ParseCommandLineOptions(CodegenOptions.size(),
- const_cast<char **>(&CodegenOptions[0]));
+ if (!CodegenOptions.empty()) {
+ // ParseCommandLineOptions() expects argv[0] to be program name.
+ std::vector<const char *> CodegenArgv(1, "libLLVMLTO");
+ for (std::string &Arg : CodegenOptions)
+ CodegenArgv.push_back(Arg.c_str());
+ cl::ParseCommandLineOptions(CodegenArgv.size(), CodegenArgv.data());
+ }
}
void LTOCodeGenerator::DiagnosticHandler(const DiagnosticInfo &DI,
projects / oota-llvm.git / blobdiff