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https://github.com/c64scene-ar/llvm-6502.git
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c821cef882
MCFragment didn't really need vtables. The majority of virtual methods were just getters and setters. This removes the vtables and uses dispatch on the kind to do things like delete which needs to get the appropriate class. This reduces memory on the verify use list order test case by about 2MB out of 800MB. Reviewed by Rafael Espíndola git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239952 91177308-0d34-0410-b5e6-96231b3b80d8
121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
//===- MCELFStreamer.h - MCStreamer ELF Object File Interface ---*- 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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#ifndef LLVM_MC_MCELFSTREAMER_H
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#define LLVM_MC_MCELFSTREAMER_H
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCObjectStreamer.h"
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#include "llvm/MC/SectionKind.h"
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#include "llvm/Support/DataTypes.h"
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#include <vector>
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namespace llvm {
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class MCAsmBackend;
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class MCAssembler;
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class MCCodeEmitter;
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class MCExpr;
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class MCInst;
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class raw_ostream;
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class MCELFStreamer : public MCObjectStreamer {
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public:
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MCELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_pwrite_stream &OS,
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MCCodeEmitter *Emitter)
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: MCObjectStreamer(Context, TAB, OS, Emitter), SeenIdent(false) {}
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~MCELFStreamer() override;
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/// state management
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void reset() override {
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SeenIdent = false;
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LocalCommons.clear();
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BundleGroups.clear();
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MCObjectStreamer::reset();
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}
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/// \name MCStreamer Interface
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/// @{
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void InitSections(bool NoExecStack) override;
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void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
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void EmitLabel(MCSymbol *Symbol) override;
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void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
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void EmitThumbFunc(MCSymbol *Func) override;
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void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
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bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
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void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
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void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void BeginCOFFSymbolDef(const MCSymbol *Symbol) override;
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void EmitCOFFSymbolStorageClass(int StorageClass) override;
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void EmitCOFFSymbolType(int Type) override;
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void EndCOFFSymbolDef() override;
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void emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) override;
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void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) override;
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void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
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uint64_t Size = 0, unsigned ByteAlignment = 0) override;
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void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment = 0) override;
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void EmitValueImpl(const MCExpr *Value, unsigned Size,
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const SMLoc &Loc = SMLoc()) override;
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void EmitFileDirective(StringRef Filename) override;
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void EmitIdent(StringRef IdentString) override;
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void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override;
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void Flush() override;
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void FinishImpl() override;
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void EmitBundleAlignMode(unsigned AlignPow2) override;
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void EmitBundleLock(bool AlignToEnd) override;
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void EmitBundleUnlock() override;
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private:
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bool isBundleLocked() const;
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void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override;
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void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override;
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void fixSymbolsInTLSFixups(const MCExpr *expr);
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/// \brief Merge the content of the fragment \p EF into the fragment \p DF.
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void mergeFragment(MCDataFragment *, MCDataFragment *);
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bool SeenIdent;
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struct LocalCommon {
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const MCSymbol *Symbol;
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uint64_t Size;
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unsigned ByteAlignment;
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};
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std::vector<LocalCommon> LocalCommons;
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/// BundleGroups - The stack of fragments holding the bundle-locked
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/// instructions.
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llvm::SmallVector<MCDataFragment *, 4> BundleGroups;
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};
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MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
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raw_pwrite_stream &OS,
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MCCodeEmitter *Emitter, bool RelaxAll,
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bool IsThumb);
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} // end namespace llvm
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#endif
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