X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=lib%2FTarget%2FTargetMachine.cpp;h=83174c20c8e9fd34902706c5f40d056ebc1bc499;hb=966e6ca1ac8b52ac81cff0f816f779abf6432481;hp=9ba78bce7f9c6eee7d768165f33035c6d941ced3;hpb=16c7e0b48cd0a34565aae663caee83e5a641823a;p=oota-llvm.git diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp index 9ba78bce7f9..83174c20c8e 100644 --- a/lib/Target/TargetMachine.cpp +++ b/lib/Target/TargetMachine.cpp @@ -12,78 +12,64 @@ //===----------------------------------------------------------------------===// #include "llvm/Target/TargetMachine.h" +#include "llvm/Analysis/TargetTransformInfo.h" #include "llvm/CodeGen/MachineFunction.h" #include "llvm/IR/Function.h" #include "llvm/IR/GlobalAlias.h" #include "llvm/IR/GlobalValue.h" #include "llvm/IR/GlobalVariable.h" +#include "llvm/IR/Mangler.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCCodeGenInfo.h" +#include "llvm/MC/MCContext.h" +#include "llvm/MC/MCInstrInfo.h" +#include "llvm/MC/MCSectionMachO.h" +#include "llvm/MC/MCTargetOptions.h" +#include "llvm/MC/SectionKind.h" +#include "llvm/IR/LegacyPassManager.h" #include "llvm/Support/CommandLine.h" +#include "llvm/Target/TargetLowering.h" +#include "llvm/Target/TargetLoweringObjectFile.h" +#include "llvm/Target/TargetSubtargetInfo.h" using namespace llvm; -//--------------------------------------------------------------------------- -// Command-line options that tend to be useful on more than one back-end. -// - -namespace llvm { - bool HasDivModLibcall; - bool AsmVerbosityDefault(false); -} - -static cl::opt -DataSections("fdata-sections", - cl::desc("Emit data into separate sections"), - cl::init(false)); -static cl::opt -FunctionSections("ffunction-sections", - cl::desc("Emit functions into separate sections"), - cl::init(false)); - //--------------------------------------------------------------------------- // TargetMachine Class // -TargetMachine::TargetMachine(const Target &T, - StringRef TT, StringRef CPU, StringRef FS, +TargetMachine::TargetMachine(const Target &T, StringRef DataLayoutString, + const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options) - : TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS), - CodeGenInfo(0), AsmInfo(0), - MCRelaxAll(false), - MCNoExecStack(false), - MCSaveTempLabels(false), - MCUseLoc(true), - MCUseCFI(true), - MCUseDwarfDirectory(false), - Options(Options) { -} + : TheTarget(T), DL(DataLayoutString), TargetTriple(TT), TargetCPU(CPU), + TargetFS(FS), CodeGenInfo(nullptr), AsmInfo(nullptr), MRI(nullptr), + MII(nullptr), STI(nullptr), RequireStructuredCFG(false), + Options(Options) {} TargetMachine::~TargetMachine() { delete CodeGenInfo; delete AsmInfo; + delete MRI; + delete MII; + delete STI; } /// \brief Reset the target options based on the function's attributes. -void TargetMachine::resetTargetOptions(const MachineFunction *MF) const { - const Function *F = MF->getFunction(); - TargetOptions &TO = MF->getTarget().Options; - -#define RESET_OPTION(X, Y) \ - do { \ - if (F->hasFnAttribute(Y)) \ - TO.X = \ - (F->getAttributes(). \ - getAttribute(AttributeSet::FunctionIndex, \ - Y).getValueAsString() == "true"); \ +// FIXME: This function needs to go away for a number of reasons: +// a) global state on the TargetMachine is terrible in general, +// b) there's no default state here to keep, +// c) these target options should be passed only on the function +// and not on the TargetMachine (via TargetOptions) at all. +void TargetMachine::resetTargetOptions(const Function &F) const { +#define RESET_OPTION(X, Y) \ + do { \ + if (F.hasFnAttribute(Y)) \ + Options.X = (F.getFnAttribute(Y).getValueAsString() == "true"); \ } while (0) - RESET_OPTION(NoFramePointerElim, "no-frame-pointer-elim"); RESET_OPTION(LessPreciseFPMADOption, "less-precise-fpmad"); RESET_OPTION(UnsafeFPMath, "unsafe-fp-math"); RESET_OPTION(NoInfsFPMath, "no-infs-fp-math"); RESET_OPTION(NoNaNsFPMath, "no-nans-fp-math"); - RESET_OPTION(UseSoftFloat, "use-soft-float"); - RESET_OPTION(DisableTailCalls, "disable-tail-calls"); } /// getRelocationModel - Returns the code generation relocation model. The @@ -103,8 +89,8 @@ CodeModel::Model TargetMachine::getCodeModel() const { } /// Get the IR-specified TLS model for Var. -static TLSModel::Model getSelectedTLSModel(const GlobalVariable *Var) { - switch (Var->getThreadLocalMode()) { +static TLSModel::Model getSelectedTLSModel(const GlobalValue *GV) { + switch (GV->getThreadLocalMode()) { case GlobalVariable::NotThreadLocal: llvm_unreachable("getSelectedTLSModel for non-TLS variable"); break; @@ -121,19 +107,13 @@ static TLSModel::Model getSelectedTLSModel(const GlobalVariable *Var) { } TLSModel::Model TargetMachine::getTLSModel(const GlobalValue *GV) const { - // If GV is an alias then use the aliasee for determining - // thread-localness. - if (const GlobalAlias *GA = dyn_cast(GV)) - GV = GA->resolveAliasedGlobal(false); - const GlobalVariable *Var = cast(GV); - - bool isLocal = Var->hasLocalLinkage(); - bool isDeclaration = Var->isDeclaration(); + bool isLocal = GV->hasLocalLinkage(); + bool isDeclaration = GV->isDeclaration(); bool isPIC = getRelocationModel() == Reloc::PIC_; bool isPIE = Options.PositionIndependentExecutable; // FIXME: what should we do for protected and internal visibility? // For variables, is internal different from hidden? - bool isHidden = Var->hasHiddenVisibility(); + bool isHidden = GV->hasHiddenVisibility(); TLSModel::Model Model; if (isPIC && !isPIE) { @@ -149,7 +129,7 @@ TLSModel::Model TargetMachine::getTLSModel(const GlobalValue *GV) const { } // If the user specified a more specific model, use that. - TLSModel::Model SelectedModel = getSelectedTLSModel(Var); + TLSModel::Model SelectedModel = getSelectedTLSModel(GV); if (SelectedModel > Model) return SelectedModel; @@ -169,26 +149,44 @@ void TargetMachine::setOptLevel(CodeGenOpt::Level Level) const { CodeGenInfo->setOptLevel(Level); } -bool TargetMachine::getAsmVerbosityDefault() { - return AsmVerbosityDefault; -} - -void TargetMachine::setAsmVerbosityDefault(bool V) { - AsmVerbosityDefault = V; +TargetIRAnalysis TargetMachine::getTargetIRAnalysis() { + return TargetIRAnalysis([this](Function &F) { + return TargetTransformInfo(F.getParent()->getDataLayout()); + }); } -bool TargetMachine::getFunctionSections() { - return FunctionSections; -} +static bool canUsePrivateLabel(const MCAsmInfo &AsmInfo, + const MCSection &Section) { + if (!AsmInfo.isSectionAtomizableBySymbols(Section)) + return true; -bool TargetMachine::getDataSections() { - return DataSections; -} + // If it is not dead stripped, it is safe to use private labels. + const MCSectionMachO &SMO = cast(Section); + if (SMO.hasAttribute(MachO::S_ATTR_NO_DEAD_STRIP)) + return true; -void TargetMachine::setFunctionSections(bool V) { - FunctionSections = V; + return false; } -void TargetMachine::setDataSections(bool V) { - DataSections = V; +void TargetMachine::getNameWithPrefix(SmallVectorImpl &Name, + const GlobalValue *GV, Mangler &Mang, + bool MayAlwaysUsePrivate) const { + if (MayAlwaysUsePrivate || !GV->hasPrivateLinkage()) { + // Simple case: If GV is not private, it is not important to find out if + // private labels are legal in this case or not. + Mang.getNameWithPrefix(Name, GV, false); + return; + } + SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, *this); + const TargetLoweringObjectFile *TLOF = getObjFileLowering(); + const MCSection *TheSection = TLOF->SectionForGlobal(GV, GVKind, Mang, *this); + bool CannotUsePrivateLabel = !canUsePrivateLabel(*AsmInfo, *TheSection); + TLOF->getNameWithPrefix(Name, GV, CannotUsePrivateLabel, Mang, *this); +} + +MCSymbol *TargetMachine::getSymbol(const GlobalValue *GV, Mangler &Mang) const { + SmallString<128> NameStr; + getNameWithPrefix(NameStr, GV, Mang); + const TargetLoweringObjectFile *TLOF = getObjFileLowering(); + return TLOF->getContext().getOrCreateSymbol(NameStr); }