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940b0c036d
This makes sure we get the same redefinition rules regardless of who is printing (asm parser, codegen) and to what (asm, obj). This fixes an unintentional regression in r293936. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294752 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.9 KiB
C++
77 lines
2.9 KiB
C++
//===- MipsELFStreamer.h - ELF Object Output --------------------*- 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 is a custom MCELFStreamer which allows us to insert some hooks before
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// emitting data into an actual object file.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSELFSTREAMER_H
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#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSELFSTREAMER_H
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#include "MipsOptionRecord.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/MC/MCELFStreamer.h"
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#include <memory>
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namespace llvm {
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class MCAsmBackend;
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class MCCodeEmitter;
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class MCContext;
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class MCSubtargetInfo;
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class MipsELFStreamer : public MCELFStreamer {
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SmallVector<std::unique_ptr<MipsOptionRecord>, 8> MipsOptionRecords;
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MipsRegInfoRecord *RegInfoRecord;
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SmallVector<MCSymbol*, 4> Labels;
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public:
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MipsELFStreamer(MCContext &Context, MCAsmBackend &MAB, raw_pwrite_stream &OS,
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MCCodeEmitter *Emitter)
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: MCELFStreamer(Context, MAB, OS, Emitter) {
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RegInfoRecord = new MipsRegInfoRecord(this, Context);
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MipsOptionRecords.push_back(
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std::unique_ptr<MipsRegInfoRecord>(RegInfoRecord));
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}
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/// Overriding this function allows us to add arbitrary behaviour before the
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/// \p Inst is actually emitted. For example, we can inspect the operands and
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/// gather sufficient information that allows us to reason about the register
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/// usage for the translation unit.
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void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) override;
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/// Overriding this function allows us to record all labels that should be
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/// marked as microMIPS. Based on this data marking is done in
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/// EmitInstruction.
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void EmitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
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/// Overriding this function allows us to dismiss all labels that are
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/// candidates for marking as microMIPS when .section directive is processed.
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void SwitchSection(MCSection *Section,
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const MCExpr *Subsection = nullptr) override;
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/// Overriding this function allows us to dismiss all labels that are
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/// candidates for marking as microMIPS when .word directive is emitted.
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void EmitValueImpl(const MCExpr *Value, unsigned Size, SMLoc Loc) override;
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/// Emits all the option records stored up until the point it's called.
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void EmitMipsOptionRecords();
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/// Mark labels as microMIPS, if necessary for the subtarget.
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void createPendingLabelRelocs();
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};
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MCELFStreamer *createMipsELFStreamer(MCContext &Context, MCAsmBackend &MAB,
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raw_pwrite_stream &OS,
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MCCodeEmitter *Emitter, bool RelaxAll);
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSELFSTREAMER_H
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