X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FTargetLoweringObjectFileImpl.h;h=9a3abc4dc1fc7f22e938a54d1e381be5ec13773b;hb=dff75493e8040cefd56c9b984e6af5b60c32ec45;hp=3d99fa76e0bd1271cb2ae3f0f78c1d40cf640768;hpb=293d592bf9cff6c3679998dde32f3cfd3cd53bc4;p=oota-llvm.git diff --git a/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h b/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h index 3d99fa76e0b..9a3abc4dc1f 100644 --- a/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h +++ b/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h @@ -33,173 +33,132 @@ namespace llvm { class TargetLoweringObjectFileELF : public TargetLoweringObjectFile { - mutable void *UniquingMap; -protected: - /// TLSDataSection - Section directive for Thread Local data. - /// - const MCSection *TLSDataSection; // Defaults to ".tdata". - - /// TLSBSSSection - Section directive for Thread Local uninitialized data. - /// Null if this target doesn't support a BSS section. - /// - const MCSection *TLSBSSSection; // Defaults to ".tbss". - - const MCSection *DataRelSection; - const MCSection *DataRelLocalSection; - const MCSection *DataRelROSection; - const MCSection *DataRelROLocalSection; - - const MCSection *MergeableConst4Section; - const MCSection *MergeableConst8Section; - const MCSection *MergeableConst16Section; - -protected: - const MCSection *getELFSection(StringRef Section, unsigned Type, - unsigned Flags, SectionKind Kind, - bool IsExplicit = false) const; -public: - TargetLoweringObjectFileELF() : UniquingMap(0) {} - ~TargetLoweringObjectFileELF(); - - virtual void Initialize(MCContext &Ctx, const TargetMachine &TM); - - const MCSection *getDataRelSection() const { return DataRelSection; } - - /// getSectionForConstant - Given a constant with the SectionKind, return a - /// section that it should be placed in. - virtual const MCSection *getSectionForConstant(SectionKind Kind) const; - - - virtual const MCSection * - getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; + bool UseInitArray; + mutable unsigned NextUniqueID = 0; - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - - /// getSymbolForDwarfGlobalReference - Return an MCExpr to use for a reference - /// to the specified global variable from exception handling information. - /// - virtual const MCExpr * - getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang, - MachineModuleInfo *MMI, unsigned Encoding) const; +public: + TargetLoweringObjectFileELF() : UseInitArray(false) {} + + ~TargetLoweringObjectFileELF() override {} + + void emitPersonalityValue(MCStreamer &Streamer, const DataLayout &TM, + const MCSymbol *Sym) const override; + + /// Given a constant with the SectionKind, return a section that it should be + /// placed in. + MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind, + const Constant *C) const override; + + MCSection *getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, + Mangler &Mang, + const TargetMachine &TM) const override; + + MCSection *SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, + Mangler &Mang, + const TargetMachine &TM) const override; + + MCSection *getSectionForJumpTable(const Function &F, Mangler &Mang, + const TargetMachine &TM) const override; + + bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference, + const Function &F) const override; + + /// Return an MCExpr to use for a reference to the specified type info global + /// variable from exception handling information. + const MCExpr * + getTTypeGlobalReference(const GlobalValue *GV, unsigned Encoding, + Mangler &Mang, const TargetMachine &TM, + MachineModuleInfo *MMI, + MCStreamer &Streamer) const override; + + // The symbol that gets passed to .cfi_personality. + MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV, Mangler &Mang, + const TargetMachine &TM, + MachineModuleInfo *MMI) const override; + + void InitializeELF(bool UseInitArray_); + MCSection *getStaticCtorSection(unsigned Priority, + const MCSymbol *KeySym) const override; + MCSection *getStaticDtorSection(unsigned Priority, + const MCSymbol *KeySym) const override; }; class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile { - mutable void *UniquingMap; - - const MCSection *CStringSection; - const MCSection *UStringSection; - const MCSection *TextCoalSection; - const MCSection *ConstTextCoalSection; - const MCSection *ConstDataCoalSection; - const MCSection *ConstDataSection; - const MCSection *DataCoalSection; - const MCSection *DataCommonSection; - const MCSection *DataBSSSection; - const MCSection *FourByteConstantSection; - const MCSection *EightByteConstantSection; - const MCSection *SixteenByteConstantSection; - - const MCSection *LazySymbolPointerSection; - const MCSection *NonLazySymbolPointerSection; public: - TargetLoweringObjectFileMachO() : UniquingMap(0) {} - ~TargetLoweringObjectFileMachO(); - - virtual void Initialize(MCContext &Ctx, const TargetMachine &TM); - - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - - virtual const MCSection * - getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; - - virtual const MCSection *getSectionForConstant(SectionKind Kind) const; - - /// shouldEmitUsedDirectiveFor - This hook allows targets to selectively - /// decide not to emit the UsedDirective for some symbols in llvm.used. - /// FIXME: REMOVE this (rdar://7071300) - virtual bool shouldEmitUsedDirectiveFor(const GlobalValue *GV, - Mangler *) const; - - /// getMachOSection - Return the MCSection for the specified mach-o section. - /// This requires the operands to be valid. - const MCSectionMachO *getMachOSection(StringRef Segment, - StringRef Section, - unsigned TypeAndAttributes, - SectionKind K) const { - return getMachOSection(Segment, Section, TypeAndAttributes, 0, K); - } - const MCSectionMachO *getMachOSection(StringRef Segment, - StringRef Section, - unsigned TypeAndAttributes, - unsigned Reserved2, - SectionKind K) const; - - /// getTextCoalSection - Return the "__TEXT,__textcoal_nt" section we put weak - /// text symbols into. - const MCSection *getTextCoalSection() const { - return TextCoalSection; - } - - /// getConstTextCoalSection - Return the "__TEXT,__const_coal" section - /// we put weak read-only symbols into. - const MCSection *getConstTextCoalSection() const { - return ConstTextCoalSection; - } - - /// getLazySymbolPointerSection - Return the section corresponding to - /// the .lazy_symbol_pointer directive. - const MCSection *getLazySymbolPointerSection() const { - return LazySymbolPointerSection; - } - - /// getNonLazySymbolPointerSection - Return the section corresponding to - /// the .non_lazy_symbol_pointer directive. - const MCSection *getNonLazySymbolPointerSection() const { - return NonLazySymbolPointerSection; - } - - /// getSymbolForDwarfGlobalReference - The mach-o version of this method - /// defaults to returning a stub reference. - virtual const MCExpr * - getSymbolForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang, - MachineModuleInfo *MMI, unsigned Encoding) const; - - virtual unsigned getPersonalityEncoding() const; - virtual unsigned getLSDAEncoding() const; - virtual unsigned getFDEEncoding() const; - virtual unsigned getTTypeEncoding() const; + ~TargetLoweringObjectFileMachO() override {} + TargetLoweringObjectFileMachO(); + + /// Emit the module flags that specify the garbage collection information. + void emitModuleFlags(MCStreamer &Streamer, + ArrayRef ModuleFlags, + Mangler &Mang, const TargetMachine &TM) const override; + + MCSection *SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, + Mangler &Mang, + const TargetMachine &TM) const override; + + MCSection *getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, + Mangler &Mang, + const TargetMachine &TM) const override; + + MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind, + const Constant *C) const override; + + /// The mach-o version of this method defaults to returning a stub reference. + const MCExpr * + getTTypeGlobalReference(const GlobalValue *GV, unsigned Encoding, + Mangler &Mang, const TargetMachine &TM, + MachineModuleInfo *MMI, + MCStreamer &Streamer) const override; + + // The symbol that gets passed to .cfi_personality. + MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV, Mangler &Mang, + const TargetMachine &TM, + MachineModuleInfo *MMI) const override; + + /// Get MachO PC relative GOT entry relocation + const MCExpr *getIndirectSymViaGOTPCRel(const MCSymbol *Sym, + const MCValue &MV, int64_t Offset, + MachineModuleInfo *MMI, + MCStreamer &Streamer) const override; }; class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile { - mutable void *UniquingMap; public: - TargetLoweringObjectFileCOFF() : UniquingMap(0) {} - ~TargetLoweringObjectFileCOFF(); + ~TargetLoweringObjectFileCOFF() override {} + + MCSection *getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, + Mangler &Mang, + const TargetMachine &TM) const override; + + MCSection *SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, + Mangler &Mang, + const TargetMachine &TM) const override; + + void getNameWithPrefix(SmallVectorImpl &OutName, const GlobalValue *GV, + bool CannotUsePrivateLabel, Mangler &Mang, + const TargetMachine &TM) const override; - virtual void Initialize(MCContext &Ctx, const TargetMachine &TM); + MCSection *getSectionForJumpTable(const Function &F, Mangler &Mang, + const TargetMachine &TM) const override; - virtual const MCSection * - getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; + /// Emit Obj-C garbage collection and linker options. Only linker option + /// emission is implemented for COFF. + void emitModuleFlags(MCStreamer &Streamer, + ArrayRef ModuleFlags, + Mangler &Mang, const TargetMachine &TM) const override; - virtual const MCSection * - SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, - Mangler *Mang, const TargetMachine &TM) const; + MCSection *getStaticCtorSection(unsigned Priority, + const MCSymbol *KeySym) const override; + MCSection *getStaticDtorSection(unsigned Priority, + const MCSymbol *KeySym) const override; - /// getCOFFSection - Return the MCSection for the specified COFF section. - /// FIXME: Switch this to a semantic view eventually. - const MCSection *getCOFFSection(StringRef Name, bool isDirective, - SectionKind K) const; + void emitLinkerFlagsForGlobal(raw_ostream &OS, const GlobalValue *GV, + const Mangler &Mang) const override; }; } // end namespace llvm