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38c6b58eec
Summary: AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for targets with mature MC support. Such targets will always parse the inline assembly (even when emitting assembly). Targets without mature MC support continue to use EmitRawText() for assembly output. The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler to parse inline assembly (even when emitting assembly output). UseIntegratedAs is set to true for targets that consider any failure to parse valid assembly to be a bug. Target specific subclasses generally enable the integrated assembler in their constructor. The default value can be overridden with -no-integrated-as. All tests that rely on inline assembly supporting invalid assembly (for example, those that use mnemonics such as 'foo' or 'hello world') have been updated to disable the integrated assembler. Changes since review (and last commit attempt): - Fixed test failures that were missed due to configuration of local build. (fixes crash.ll and a couple others). - Fixed tests that happened to pass because the local build was on X86 (should fix 2007-12-17-InvokeAsm.ll) - mature-mc-support.ll's should no longer require all targets to be compiled. (should fix ARM and PPC buildbots) - Object output (-filetype=obj and similar) now forces the integrated assembler to be enabled regardless of default setting or -no-integrated-as. (should fix SystemZ buildbots) Reviewers: rafael Reviewed By: rafael CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2686 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201333 91177308-0d34-0410-b5e6-96231b3b80d8
127 lines
4.8 KiB
C++
127 lines
4.8 KiB
C++
//===- MCObjectStreamer.h - MCStreamer 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_MCOBJECTSTREAMER_H
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#define LLVM_MC_MCOBJECTSTREAMER_H
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCStreamer.h"
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namespace llvm {
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class MCAssembler;
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class MCCodeEmitter;
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class MCSectionData;
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class MCSubtargetInfo;
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class MCExpr;
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class MCFragment;
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class MCDataFragment;
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class MCAsmBackend;
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class raw_ostream;
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/// \brief Streaming object file generation interface.
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///
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/// This class provides an implementation of the MCStreamer interface which is
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/// suitable for use with the assembler backend. Specific object file formats
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/// are expected to subclass this interface to implement directives specific
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/// to that file format or custom semantics expected by the object writer
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/// implementation.
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class MCObjectStreamer : public MCStreamer {
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MCAssembler *Assembler;
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MCSectionData *CurSectionData;
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MCSectionData::iterator CurInsertionPoint;
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virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo&) = 0;
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virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
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virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame);
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protected:
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MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &_OS,
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MCCodeEmitter *_Emitter);
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MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &_OS,
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MCCodeEmitter *_Emitter, MCAssembler *_Assembler);
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~MCObjectStreamer();
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public:
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/// state management
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virtual void reset();
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/// Object streamers require the integrated assembler.
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virtual bool isIntegratedAssemblerRequired() const { return true; }
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protected:
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MCSectionData *getCurrentSectionData() const {
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return CurSectionData;
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}
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MCFragment *getCurrentFragment() const;
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void insert(MCFragment *F) const {
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CurSectionData->getFragmentList().insert(CurInsertionPoint, F);
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F->setParent(CurSectionData);
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}
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/// Get a data fragment to write into, creating a new one if the current
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/// fragment is not a data fragment.
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MCDataFragment *getOrCreateDataFragment() const;
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const MCExpr *AddValueSymbols(const MCExpr *Value);
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public:
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MCAssembler &getAssembler() { return *Assembler; }
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/// @name MCStreamer Interface
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/// @{
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virtual void EmitLabel(MCSymbol *Symbol);
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virtual void EmitDebugLabel(MCSymbol *Symbol);
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virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
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virtual void EmitValueImpl(const MCExpr *Value, unsigned Size);
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virtual void EmitULEB128Value(const MCExpr *Value);
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virtual void EmitSLEB128Value(const MCExpr *Value);
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virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
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virtual void ChangeSection(const MCSection *Section,
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const MCExpr *Subsection);
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virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo& STI);
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/// \brief Emit an instruction to a special fragment, because this instruction
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/// can change its size during relaxation.
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virtual void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &);
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virtual void EmitBundleAlignMode(unsigned AlignPow2);
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virtual void EmitBundleLock(bool AlignToEnd);
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virtual void EmitBundleUnlock();
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virtual void EmitBytes(StringRef Data);
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virtual void EmitValueToAlignment(unsigned ByteAlignment,
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int64_t Value = 0,
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unsigned ValueSize = 1,
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unsigned MaxBytesToEmit = 0);
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virtual void EmitCodeAlignment(unsigned ByteAlignment,
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unsigned MaxBytesToEmit = 0);
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virtual bool EmitValueToOffset(const MCExpr *Offset, unsigned char Value);
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virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
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unsigned Column, unsigned Flags,
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unsigned Isa, unsigned Discriminator,
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StringRef FileName);
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virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
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const MCSymbol *LastLabel,
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const MCSymbol *Label,
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unsigned PointerSize);
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virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
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const MCSymbol *Label);
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virtual void EmitGPRel32Value(const MCExpr *Value);
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virtual void EmitGPRel64Value(const MCExpr *Value);
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virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue);
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virtual void EmitZeros(uint64_t NumBytes);
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virtual void FinishImpl();
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};
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} // end namespace llvm
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#endif
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