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https://github.com/c64scene-ar/llvm-6502.git
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737c9f6005
r201608 made llvm corretly handle private globals with MachO. r201622 fixed a bug in it and r201624 and r201625 were changes for using private linkage, assuming that llvm would do the right thing. They all got reverted because r201608 introduced a crash in LTO. This patch includes a fix for that. The issue was that TargetLoweringObjectFile now has to be initialized before we can mangle names of private globals. This is trivially true during the normal codegen pipeline (the asm printer does it), but LTO has to do it manually. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201700 91177308-0d34-0410-b5e6-96231b3b80d8
159 lines
6.0 KiB
C++
159 lines
6.0 KiB
C++
//==-- llvm/CodeGen/TargetLoweringObjectFileImpl.h - Object Info -*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/ADT/StringRef.h"
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#include "llvm/MC/SectionKind.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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namespace llvm {
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class MachineModuleInfo;
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class Mangler;
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class MCAsmInfo;
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class MCExpr;
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class MCSection;
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class MCSectionMachO;
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class MCSymbol;
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class MCContext;
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class GlobalValue;
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class TargetMachine;
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class TargetLoweringObjectFileELF : public TargetLoweringObjectFile {
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bool UseInitArray;
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public:
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virtual ~TargetLoweringObjectFileELF() {}
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void emitPersonalityValue(MCStreamer &Streamer, const TargetMachine &TM,
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const MCSymbol *Sym) const LLVM_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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const MCSection *getSectionForConstant(SectionKind Kind) const LLVM_OVERRIDE;
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const MCSection *getExplicitSectionGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const
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LLVM_OVERRIDE;
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const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const
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LLVM_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 *
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getTTypeGlobalReference(const GlobalValue *GV, unsigned Encoding,
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Mangler &Mang, const TargetMachine &TM,
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MachineModuleInfo *MMI, MCStreamer &Streamer) const
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LLVM_OVERRIDE;
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// The symbol that gets passed to .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV, Mangler &Mang,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const LLVM_OVERRIDE;
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void InitializeELF(bool UseInitArray_);
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const MCSection *getStaticCtorSection(unsigned Priority = 65535) const
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LLVM_OVERRIDE;
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const MCSection *getStaticDtorSection(unsigned Priority = 65535) const
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LLVM_OVERRIDE;
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};
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class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
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public:
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virtual ~TargetLoweringObjectFileMachO() {}
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/// Extract the dependent library name from a linker option string. Returns
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/// StringRef() if the option does not specify a library.
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StringRef getDepLibFromLinkerOpt(StringRef LinkerOption) const LLVM_OVERRIDE;
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/// Emit the module flags that specify the garbage collection information.
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void emitModuleFlags(MCStreamer &Streamer,
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ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
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Mangler &Mang, const TargetMachine &TM) const
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LLVM_OVERRIDE;
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bool isSectionAtomizableBySymbols(const MCSection &Section) const
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LLVM_OVERRIDE;
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const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const
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LLVM_OVERRIDE;
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const MCSection *getExplicitSectionGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const
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LLVM_OVERRIDE;
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const MCSection *getSectionForConstant(SectionKind Kind) const LLVM_OVERRIDE;
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/// This hook allows targets to selectively decide not to emit the
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/// UsedDirective for some symbols in llvm.used.
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/// FIXME: REMOVE this (rdar://7071300)
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bool shouldEmitUsedDirectiveFor(const GlobalValue *GV, Mangler &Mang,
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TargetMachine &TM) const LLVM_OVERRIDE;
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/// The mach-o version of this method defaults to returning a stub reference.
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const MCExpr *
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getTTypeGlobalReference(const GlobalValue *GV, unsigned Encoding,
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Mangler &Mang, const TargetMachine &TM,
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MachineModuleInfo *MMI, MCStreamer &Streamer) const
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LLVM_OVERRIDE;
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// The symbol that gets passed to .cfi_personality.
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MCSymbol *getCFIPersonalitySymbol(const GlobalValue *GV, Mangler &Mang,
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const TargetMachine &TM,
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MachineModuleInfo *MMI) const LLVM_OVERRIDE;
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};
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class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
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public:
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virtual ~TargetLoweringObjectFileCOFF() {}
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const MCSection *getExplicitSectionGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const
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LLVM_OVERRIDE;
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const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
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SectionKind Kind, Mangler &Mang,
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const TargetMachine &TM) const
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LLVM_OVERRIDE;
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/// Extract the dependent library name from a linker option string. Returns
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/// StringRef() if the option does not specify a library.
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StringRef getDepLibFromLinkerOpt(StringRef LinkerOption) const LLVM_OVERRIDE;
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/// Emit Obj-C garbage collection and linker options. Only linker option
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/// emission is implemented for COFF.
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void emitModuleFlags(MCStreamer &Streamer,
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ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
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Mangler &Mang, const TargetMachine &TM) const
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LLVM_OVERRIDE;
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};
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} // end namespace llvm
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#endif
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