X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetMachine.cpp;h=307e93c37d484fd3a537381d94037e10c84734ae;hb=14593eb417e2cd345e1785bd311d55d1f1dd556b;hp=7c40bcd559b0a46fe5d629b1468ef9df17a61839;hpb=d6af41b2eb87a1f822932aa19b4a9f6039de11fd;p=oota-llvm.git diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp index 7c40bcd559b..307e93c37d4 100644 --- a/lib/Target/TargetMachine.cpp +++ b/lib/Target/TargetMachine.cpp @@ -12,6 +12,7 @@ //===----------------------------------------------------------------------===// #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" @@ -21,31 +22,16 @@ #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCCodeGenInfo.h" #include "llvm/MC/MCContext.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 // @@ -54,12 +40,7 @@ TargetMachine::TargetMachine(const Target &T, StringRef 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), - MCUseCFI(true), - MCUseDwarfDirectory(false), + CodeGenInfo(nullptr), AsmInfo(nullptr), RequireStructuredCFG(false), Options(Options) { } @@ -70,17 +51,11 @@ TargetMachine::~TargetMachine() { } /// \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"); \ +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"); @@ -91,7 +66,7 @@ void TargetMachine::resetTargetOptions(const MachineFunction *MF) const { RESET_OPTION(UseSoftFloat, "use-soft-float"); RESET_OPTION(DisableTailCalls, "disable-tail-calls"); - TO.MCOptions.SanitizeAddress = F->hasFnAttribute(Attribute::SanitizeAddress); + Options.MCOptions.SanitizeAddress = F.hasFnAttribute(Attribute::SanitizeAddress); } /// getRelocationModel - Returns the code generation relocation model. The @@ -111,8 +86,8 @@ 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; @@ -129,19 +104,13 @@ 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->getAliasedGlobal(); - 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) { @@ -157,7 +126,7 @@ 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; @@ -177,28 +146,22 @@ void TargetMachine::setOptLevel(CodeGenOpt::Level Level) const { CodeGenInfo->setOptLevel(Level); } -bool TargetMachine::getAsmVerbosityDefault() { - return AsmVerbosityDefault; +TargetIRAnalysis TargetMachine::getTargetIRAnalysis() { + return TargetIRAnalysis( + [this](Function &) { return TargetTransformInfo(getDataLayout()); }); } -void TargetMachine::setAsmVerbosityDefault(bool V) { - AsmVerbosityDefault = V; -} - -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; -} - -void TargetMachine::setFunctionSections(bool V) { - FunctionSections = V; -} + // 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::setDataSections(bool V) { - DataSections = V; + return false; } void TargetMachine::getNameWithPrefix(SmallVectorImpl &Name, @@ -211,17 +174,15 @@ void TargetMachine::getNameWithPrefix(SmallVectorImpl &Name, return; } SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, *this); - const TargetLoweringObjectFile &TLOF = - getTargetLowering()->getObjFileLowering(); - const MCSection *TheSection = TLOF.SectionForGlobal(GV, GVKind, Mang, *this); - bool CannotUsePrivateLabel = TLOF.isSectionAtomizableBySymbols(*TheSection); + const TargetLoweringObjectFile *TLOF = getObjFileLowering(); + const MCSection *TheSection = TLOF->SectionForGlobal(GV, GVKind, Mang, *this); + bool CannotUsePrivateLabel = !canUsePrivateLabel(*AsmInfo, *TheSection); Mang.getNameWithPrefix(Name, GV, CannotUsePrivateLabel); } MCSymbol *TargetMachine::getSymbol(const GlobalValue *GV, Mangler &Mang) const { SmallString<60> NameStr; getNameWithPrefix(NameStr, GV, Mang); - const TargetLoweringObjectFile &TLOF = - getTargetLowering()->getObjFileLowering(); - return TLOF.getContext().GetOrCreateSymbol(NameStr.str()); + const TargetLoweringObjectFile *TLOF = getObjFileLowering(); + return TLOF->getContext().GetOrCreateSymbol(NameStr.str()); }