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94c981273e
COFF lacks a feature that other object file formats support: mergeable sections. To work around this, MSVC sticks constant pool entries in special COMDAT sections so that each constant is in it's own section. This permits unused constants to be dropped and it also allows duplicate constants in different translation units to get merged together. This fixes PR20262. Differential Revision: http://reviews.llvm.org/D4482 llvm-svn: 213006
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
//===-- X86AsmPrinter.h - X86 implementation of AsmPrinter ------*- 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 X86ASMPRINTER_H
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#define X86ASMPRINTER_H
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#include "X86Subtarget.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/StackMaps.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class MCStreamer;
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class MCSymbol;
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class LLVM_LIBRARY_VISIBILITY X86AsmPrinter : public AsmPrinter {
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const X86Subtarget *Subtarget;
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StackMaps SM;
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void GenerateExportDirective(const MCSymbol *Sym, bool IsData);
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public:
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explicit X86AsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
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: AsmPrinter(TM, Streamer), SM(*this) {
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Subtarget = &TM.getSubtarget<X86Subtarget>();
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}
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const char *getPassName() const override {
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return "X86 Assembly / Object Emitter";
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}
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const X86Subtarget &getSubtarget() const { return *Subtarget; }
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void EmitStartOfAsmFile(Module &M) override;
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void EmitEndOfAsmFile(Module &M) override;
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void EmitInstruction(const MachineInstr *MI) override;
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &OS) override;
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &OS) override;
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/// \brief Return the symbol for the specified constant pool entry.
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MCSymbol *GetCPISymbol(unsigned CPID) const override;
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bool runOnMachineFunction(MachineFunction &F) override;
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};
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} // end namespace llvm
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#endif
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