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https://github.com/c64scene-ar/llvm-6502.git
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90c579de5a
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
//===-------------- 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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#include "llvm/ADT/SmallSet.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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SmallSet<unsigned, 8> &ImpDefRegs);
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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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