mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2026-08-27 12:41:21 -04:00
jasonliu
a6c9432fe1
Summary: AIX symbol have qualname and unqualified name. The stock getSymbol could only return unqualified name, which leads us to patch many caller side(lowerConstant, getMCSymbolForTOCPseudoMO). So we should try to address this problem in the callee side(getSymbol) and clean up the caller side instead. Note: this is a "mostly" NFC patch, with a fix for the original lowerConstant behavior. Differential Revision: https://reviews.llvm.org/D78045
270 lines
12 KiB
C++
270 lines
12 KiB
C++
//==- llvm/CodeGen/TargetLoweringObjectFileImpl.h - Object Info --*- C++ -*-==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements classes used to handle lowerings specific to common
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// object file formats.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
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#define LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
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#include "llvm/BinaryFormat/XCOFF.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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namespace llvm {
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class GlobalValue;
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class MachineModuleInfo;
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class MCContext;
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class MCExpr;
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class MCSection;
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class MCSymbol;
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class Module;
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class TargetMachine;
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class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
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bool UseInitArray = false;
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mutable unsigned NextUniqueID = 1; // ID 0 is reserved for execute-only sections
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protected:
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MCSymbolRefExpr::VariantKind PLTRelativeVariantKind =
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MCSymbolRefExpr::VK_None;
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const TargetMachine *TM = nullptr;
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public:
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TargetLoweringObjectFileELF() = default;
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~TargetLoweringObjectFileELF() override = default;
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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/// Emit Obj-C garbage collection and linker options.
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void emitModuleMetadata(MCStreamer &Streamer, Module &M) const override;
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void emitPersonalityValue(MCStreamer &Streamer, const DataLayout &DL,
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const MCSymbol *Sym) const override;
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/// Given a constant with the SectionKind, return a section that it should be
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/// placed in.
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MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
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const Constant *C,
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unsigned &Align) const override;
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MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *getSectionForJumpTable(const Function &F,
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const TargetMachine &TM) const override;
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MCSection *
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getSectionForMachineBasicBlock(const Function &F,
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const MachineBasicBlock &MBB,
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const TargetMachine &TM) const override;
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bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference,
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const Function &F) const override;
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/// Return an MCExpr to use for a reference to the specified type info global
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/// variable from exception handling information.
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const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
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unsigned Encoding,
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const TargetMachine &TM,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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// The symbol that gets passed to .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const override;
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void InitializeELF(bool UseInitArray_);
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MCSection *getStaticCtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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MCSection *getStaticDtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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const MCExpr *lowerRelativeReference(const GlobalValue *LHS,
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const GlobalValue *RHS,
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const TargetMachine &TM) const override;
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MCSection *getSectionForCommandLines() const override;
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};
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class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
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public:
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TargetLoweringObjectFileMachO();
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~TargetLoweringObjectFileMachO() override = default;
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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/// Emit the module flags that specify the garbage collection information.
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void emitModuleMetadata(MCStreamer &Streamer, Module &M) const override;
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MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
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const Constant *C,
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unsigned &Align) const override;
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/// The mach-o version of this method defaults to returning a stub reference.
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const MCExpr *getTTypeGlobalReference(const GlobalValue *GV,
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unsigned Encoding,
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const TargetMachine &TM,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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// The symbol that gets passed to .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const override;
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/// Get MachO PC relative GOT entry relocation
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const MCExpr *getIndirectSymViaGOTPCRel(const GlobalValue *GV,
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const MCSymbol *Sym,
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const MCValue &MV, int64_t Offset,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
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const TargetMachine &TM) const override;
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};
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class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
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mutable unsigned NextUniqueID = 0;
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public:
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~TargetLoweringObjectFileCOFF() override = default;
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
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const TargetMachine &TM) const override;
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MCSection *getSectionForJumpTable(const Function &F,
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const TargetMachine &TM) const override;
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/// Emit Obj-C garbage collection and linker options.
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void emitModuleMetadata(MCStreamer &Streamer, Module &M) const override;
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MCSection *getStaticCtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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MCSection *getStaticDtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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void emitLinkerFlagsForGlobal(raw_ostream &OS,
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const GlobalValue *GV) const override;
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void emitLinkerFlagsForUsed(raw_ostream &OS,
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const GlobalValue *GV) const override;
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const MCExpr *lowerRelativeReference(const GlobalValue *LHS,
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const GlobalValue *RHS,
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const TargetMachine &TM) const override;
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/// Given a mergeable constant with the specified size and relocation
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/// information, return a section that it should be placed in.
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MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
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const Constant *C,
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unsigned &Align) const override;
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};
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class TargetLoweringObjectFileWasm : public TargetLoweringObjectFile {
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mutable unsigned NextUniqueID = 0;
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public:
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TargetLoweringObjectFileWasm() = default;
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~TargetLoweringObjectFileWasm() override = default;
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MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference,
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const Function &F) const override;
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void InitializeWasm();
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MCSection *getStaticCtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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MCSection *getStaticDtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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const MCExpr *lowerRelativeReference(const GlobalValue *LHS,
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const GlobalValue *RHS,
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const TargetMachine &TM) const override;
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};
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class TargetLoweringObjectFileXCOFF : public TargetLoweringObjectFile {
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public:
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TargetLoweringObjectFileXCOFF() = default;
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~TargetLoweringObjectFileXCOFF() override = default;
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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bool shouldPutJumpTableInFunctionSection(bool UsesLabelDifference,
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const Function &F) const override;
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MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *getStaticCtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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MCSection *getStaticDtorSection(unsigned Priority,
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const MCSymbol *KeySym) const override;
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const MCExpr *lowerRelativeReference(const GlobalValue *LHS,
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const GlobalValue *RHS,
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const TargetMachine &TM) const override;
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MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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MCSection *getSectionForJumpTable(const Function &F,
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const TargetMachine &TM) const override;
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/// Given a constant with the SectionKind, return a section that it should be
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/// placed in.
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MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
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const Constant *C,
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unsigned &Align) const override;
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static XCOFF::StorageClass getStorageClassForGlobal(const GlobalObject *GO);
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MCSection *
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getSectionForFunctionDescriptor(const Function *F,
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const TargetMachine &TM) const override;
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MCSection *getSectionForTOCEntry(const MCSymbol *Sym) const override;
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/// For external functions, this will always return a function descriptor
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/// csect.
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MCSection *
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getSectionForExternalReference(const GlobalObject *GO,
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const TargetMachine &TM) const override;
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/// For functions, this will always return a function descriptor symbol.
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MCSymbol *getTargetSymbol(const GlobalValue *GV,
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const TargetMachine &TM) const override;
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};
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} // end namespace llvm
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#endif // LLVM_CODEGEN_TARGETLOWERINGOBJECTFILEIMPL_H
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