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42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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//===-------------- llvm/CodeGen/ProcessImplicitDefs.h ----------*- 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_CODEGEN_PROCESSIMPLICITDEFS_H
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#define LLVM_CODEGEN_PROCESSIMPLICITDEFS_H
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#include "llvm/CodeGen/MachineFunctionPass.h"
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namespace llvm {
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class MachineInstr;
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class TargetInstrInfo;
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/// Process IMPLICIT_DEF instructions and make sure there is one implicit_def
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/// for each use. Add isUndef marker to implicit_def defs and their uses.
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class ProcessImplicitDefs : public MachineFunctionPass {
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private:
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bool CanTurnIntoImplicitDef(MachineInstr *MI, unsigned Reg,
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unsigned OpIdx, const TargetInstrInfo *tii_);
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public:
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static char ID;
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ProcessImplicitDefs() : MachineFunctionPass(&ID) {}
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virtual void getAnalysisUsage(AnalysisUsage &au) const;
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virtual bool runOnMachineFunction(MachineFunction &fn);
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};
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}
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#endif // LLVM_CODEGEN_PROCESSIMPLICITDEFS_H
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