X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FLTO%2FLTOCodeGenerator.cpp;h=a51b1c9df8b10be41874d40cabcf5b25e81b7fe1;hb=6c0e1e0fa658f4e7466c6787aedce992ece2db55;hp=cdb4f9527679772f311573b691e97418e39544dd;hpb=f4ccd110750a3f3fe6a107d5c74c649c2a0dc407;p=oota-llvm.git diff --git a/lib/LTO/LTOCodeGenerator.cpp b/lib/LTO/LTOCodeGenerator.cpp index cdb4f952767..a51b1c9df8b 100644 --- a/lib/LTO/LTOCodeGenerator.cpp +++ b/lib/LTO/LTOCodeGenerator.cpp @@ -44,14 +44,15 @@ #include "llvm/Support/TargetSelect.h" #include "llvm/Support/ToolOutputFile.h" #include "llvm/Support/raw_ostream.h" -#include "llvm/Support/system_error.h" #include "llvm/Target/TargetLibraryInfo.h" #include "llvm/Target/TargetLowering.h" #include "llvm/Target/TargetOptions.h" #include "llvm/Target/TargetRegisterInfo.h" +#include "llvm/Target/TargetSubtargetInfo.h" #include "llvm/Transforms/IPO.h" #include "llvm/Transforms/IPO/PassManagerBuilder.h" #include "llvm/Transforms/ObjCARC.h" +#include using namespace llvm; const char* LTOCodeGenerator::getVersionString() { @@ -63,21 +64,20 @@ const char* LTOCodeGenerator::getVersionString() { } LTOCodeGenerator::LTOCodeGenerator() - : Context(getGlobalContext()), Linker(new Module("ld-temp.o", Context)), - TargetMach(NULL), EmitDwarfDebugInfo(false), ScopeRestrictionsDone(false), - CodeModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC), - InternalizeStrategy(LTO_INTERNALIZE_FULL), NativeObjectFile(NULL), - DiagHandler(NULL), DiagContext(NULL) { + : Context(getGlobalContext()), IRLinker(new Module("ld-temp.o", Context)), + TargetMach(nullptr), EmitDwarfDebugInfo(false), + ScopeRestrictionsDone(false), CodeModel(LTO_CODEGEN_PIC_MODEL_DEFAULT), + NativeObjectFile(nullptr), DiagHandler(nullptr), DiagContext(nullptr) { initializeLTOPasses(); } LTOCodeGenerator::~LTOCodeGenerator() { delete TargetMach; delete NativeObjectFile; - TargetMach = NULL; - NativeObjectFile = NULL; + TargetMach = nullptr; + NativeObjectFile = nullptr; - Linker.deleteModule(); + IRLinker.deleteModule(); for (std::vector::iterator I = CodegenOptions.begin(), E = CodegenOptions.end(); @@ -108,6 +108,7 @@ void LTOCodeGenerator::initializeLTOPasses() { initializeFunctionAttrsPass(R); initializeGlobalsModRefPass(R); initializeLICMPass(R); + initializeMergedLoadStoreMotionPass(R); initializeGVNPass(R); initializeMemCpyOptPass(R); initializeDCEPass(R); @@ -115,7 +116,7 @@ void LTOCodeGenerator::initializeLTOPasses() { } bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) { - bool ret = Linker.linkInModule(mod->getLLVVMModule(), &errMsg); + bool ret = IRLinker.linkInModule(&mod->getModule(), &errMsg); const std::vector &undefs = mod->getAsmUndefinedRefs(); for (int i = 0, e = undefs.size(); i != e; ++i) @@ -125,24 +126,7 @@ bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) { } void LTOCodeGenerator::setTargetOptions(TargetOptions options) { - Options.LessPreciseFPMADOption = options.LessPreciseFPMADOption; - Options.NoFramePointerElim = options.NoFramePointerElim; - Options.AllowFPOpFusion = options.AllowFPOpFusion; - Options.UnsafeFPMath = options.UnsafeFPMath; - Options.NoInfsFPMath = options.NoInfsFPMath; - Options.NoNaNsFPMath = options.NoNaNsFPMath; - Options.HonorSignDependentRoundingFPMathOption = - options.HonorSignDependentRoundingFPMathOption; - Options.UseSoftFloat = options.UseSoftFloat; - Options.FloatABIType = options.FloatABIType; - Options.NoZerosInBSS = options.NoZerosInBSS; - Options.GuaranteedTailCallOpt = options.GuaranteedTailCallOpt; - Options.DisableTailCalls = options.DisableTailCalls; - Options.StackAlignmentOverride = options.StackAlignmentOverride; - Options.TrapFuncName = options.TrapFuncName; - Options.PositionIndependentExecutable = options.PositionIndependentExecutable; - Options.EnableSegmentedStacks = options.EnableSegmentedStacks; - Options.UseInitArray = options.UseInitArray; + Options = options; } void LTOCodeGenerator::setDebugInfo(lto_debug_model debug) { @@ -163,24 +147,13 @@ void LTOCodeGenerator::setCodePICModel(lto_codegen_model 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; } llvm_unreachable("Unknown PIC model!"); } -void -LTOCodeGenerator::setInternalizeStrategy(lto_internalize_strategy Strategy) { - switch (Strategy) { - case LTO_INTERNALIZE_FULL: - case LTO_INTERNALIZE_NONE: - case LTO_INTERNALIZE_HIDDEN: - InternalizeStrategy = Strategy; - return; - } - llvm_unreachable("Unknown internalize strategy!"); -} - bool LTOCodeGenerator::writeMergedModules(const char *path, std::string &errMsg) { if (!determineTarget(errMsg)) @@ -199,7 +172,7 @@ bool LTOCodeGenerator::writeMergedModules(const char *path, } // write bitcode to it - WriteBitcodeToFile(Linker.getModule(), Out.os()); + WriteBitcodeToFile(IRLinker.getModule(), Out.os()); Out.os().close(); if (Out.os().has_error()) { @@ -221,7 +194,8 @@ bool LTOCodeGenerator::compile_to_file(const char** name, // make unique temp .o file to put generated object file SmallString<128> Filename; int FD; - error_code EC = sys::fs::createTemporaryFile("lto-llvm", "o", FD, Filename); + std::error_code EC = + sys::fs::createTemporaryFile("lto-llvm", "o", FD, Filename); if (EC) { errMsg = EC.message(); return false; @@ -258,42 +232,43 @@ const void* LTOCodeGenerator::compile(size_t* length, const char *name; if (!compile_to_file(&name, disableOpt, disableInline, disableGVNLoadPRE, errMsg)) - return NULL; + return nullptr; // remove old buffer if compile() called twice delete NativeObjectFile; // read .o file into memory buffer - std::unique_ptr BuffPtr; - if (error_code ec = MemoryBuffer::getFile(name, BuffPtr, -1, false)) { - errMsg = ec.message(); + ErrorOr> BufferOrErr = + MemoryBuffer::getFile(name, -1, false); + if (std::error_code EC = BufferOrErr.getError()) { + errMsg = EC.message(); sys::fs::remove(NativeObjectPath); - return NULL; + return nullptr; } - NativeObjectFile = BuffPtr.release(); + NativeObjectFile = BufferOrErr.get().release(); // remove temp files sys::fs::remove(NativeObjectPath); // return buffer, unless error - if (NativeObjectFile == NULL) - return NULL; + if (!NativeObjectFile) + return nullptr; *length = NativeObjectFile->getBufferSize(); return NativeObjectFile->getBufferStart(); } bool LTOCodeGenerator::determineTarget(std::string &errMsg) { - if (TargetMach != NULL) + if (TargetMach) return true; - std::string TripleStr = Linker.getModule()->getTargetTriple(); + std::string TripleStr = IRLinker.getModule()->getTargetTriple(); if (TripleStr.empty()) TripleStr = sys::getDefaultTargetTriple(); llvm::Triple Triple(TripleStr); // create target machine from info for merged modules const Target *march = TargetRegistry::lookupTarget(TripleStr, errMsg); - if (march == NULL) + if (!march) return false; // The relocation model is actually a static member of TargetMachine and @@ -309,10 +284,14 @@ bool LTOCodeGenerator::determineTarget(std::string &errMsg) { 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 - SubtargetFeatures Features; + // 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(); // Set a default CPU for Darwin triples. @@ -321,6 +300,8 @@ bool LTOCodeGenerator::determineTarget(std::string &errMsg) { MCpu = "core2"; else if (Triple.getArch() == llvm::Triple::x86) MCpu = "yonah"; + else if (Triple.getArch() == llvm::Triple::aarch64) + MCpu = "cyclone"; } TargetMach = march->createTargetMachine(TripleStr, MCpu, FeatureStr, Options, @@ -363,7 +344,7 @@ applyRestriction(GlobalValue &GV, static void findUsedValues(GlobalVariable *LLVMUsed, SmallPtrSet &UsedValues) { - if (LLVMUsed == 0) return; + if (!LLVMUsed) return; ConstantArray *Inits = cast(LLVMUsed->getInitializer()); for (unsigned i = 0, e = Inits->getNumOperands(); i != e; ++i) @@ -400,21 +381,23 @@ static void accumulateAndSortLibcalls(std::vector &Libcalls, } void LTOCodeGenerator::applyScopeRestrictions() { - if (ScopeRestrictionsDone || !shouldInternalize()) + if (ScopeRestrictionsDone) return; - Module *mergedModule = Linker.getModule(); + Module *mergedModule = IRLinker.getModule(); // Start off with a verification pass. PassManager passes; passes.add(createVerifierPass()); + passes.add(createDebugInfoVerifierPass()); // mark which symbols can not be internalized - Mangler Mangler(TargetMach->getDataLayout()); + Mangler Mangler(TargetMach->getSubtargetImpl()->getDataLayout()); std::vector MustPreserveList; SmallPtrSet AsmUsed; std::vector Libcalls; TargetLibraryInfo TLI(Triple(TargetMach->getTargetTriple())); - accumulateAndSortLibcalls(Libcalls, TLI, TargetMach->getTargetLowering()); + accumulateAndSortLibcalls( + Libcalls, TLI, TargetMach->getSubtargetImpl()->getTargetLowering()); for (Module::iterator f = mergedModule->begin(), e = mergedModule->end(); f != e; ++f) @@ -435,9 +418,7 @@ void LTOCodeGenerator::applyScopeRestrictions() { if (!AsmUsed.empty()) { llvm::Type *i8PTy = llvm::Type::getInt8PtrTy(Context); std::vector asmUsed2; - for (SmallPtrSet::const_iterator i = AsmUsed.begin(), - e = AsmUsed.end(); i !=e; ++i) { - GlobalValue *GV = *i; + for (auto *GV : AsmUsed) { Constant *c = ConstantExpr::getBitCast(GV, i8PTy); asmUsed2.push_back(c); } @@ -452,8 +433,7 @@ void LTOCodeGenerator::applyScopeRestrictions() { LLVMCompilerUsed->setSection("llvm.metadata"); } - passes.add( - createInternalizePass(MustPreserveList, shouldOnlyInternalizeHidden())); + passes.add(createInternalizePass(MustPreserveList)); // apply scope restrictions passes.run(*mergedModule); @@ -470,7 +450,7 @@ bool LTOCodeGenerator::generateObjectFile(raw_ostream &out, if (!this->determineTarget(errMsg)) return false; - Module *mergedModule = Linker.getModule(); + Module *mergedModule = IRLinker.getModule(); // Mark which symbols can not be internalized this->applyScopeRestrictions(); @@ -480,9 +460,10 @@ bool LTOCodeGenerator::generateObjectFile(raw_ostream &out, // Start off with a verification pass. passes.add(createVerifierPass()); + passes.add(createDebugInfoVerifierPass()); // Add an appropriate DataLayout instance for this module... - mergedModule->setDataLayout(TargetMach->getDataLayout()); + mergedModule->setDataLayout(TargetMach->getSubtargetImpl()->getDataLayout()); passes.add(new DataLayoutPass(mergedModule)); // Add appropriate TargetLibraryInfo for this module. @@ -494,13 +475,12 @@ bool LTOCodeGenerator::generateObjectFile(raw_ostream &out, // keeps only main if it exists and does nothing for libraries. Instead // we create the pass ourselves with the symbol list provided by the linker. if (!DisableOpt) - PassManagerBuilder().populateLTOPassManager(passes, - /*Internalize=*/false, - !DisableInline, - DisableGVNLoadPRE); + PassManagerBuilder().populateLTOPassManager(passes, !DisableInline, + DisableGVNLoadPRE); // Make sure everything is still good. passes.add(createVerifierPass()); + passes.add(createDebugInfoVerifierPass()); PassManager codeGenPasses; @@ -588,7 +568,7 @@ LTOCodeGenerator::setDiagnosticHandler(lto_diagnostic_handler_t DiagHandler, this->DiagHandler = DiagHandler; this->DiagContext = Ctxt; if (!DiagHandler) - return Context.setDiagnosticHandler(NULL, NULL); + return Context.setDiagnosticHandler(nullptr, nullptr); // Register the LTOCodeGenerator stub in the LLVMContext to forward the // diagnostic to the external DiagHandler. Context.setDiagnosticHandler(LTOCodeGenerator::DiagnosticHandler, this);