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864e2efce2
MachineBasicBlock::canFallThrough(), which is target-independent and more thorough. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90634 91177308-0d34-0410-b5e6-96231b3b80d8
99 lines
4.3 KiB
C++
99 lines
4.3 KiB
C++
//===- AlphaInstrInfo.h - Alpha Instruction Information ---------*- 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 file contains the Alpha implementation of the TargetInstrInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef ALPHAINSTRUCTIONINFO_H
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#define ALPHAINSTRUCTIONINFO_H
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#include "llvm/Target/TargetInstrInfo.h"
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#include "AlphaRegisterInfo.h"
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namespace llvm {
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class AlphaInstrInfo : public TargetInstrInfoImpl {
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const AlphaRegisterInfo RI;
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public:
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AlphaInstrInfo();
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/// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
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/// such, whenever a client has an instance of instruction info, it should
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/// always be able to get register info as well (through this method).
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///
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virtual const AlphaRegisterInfo &getRegisterInfo() const { return RI; }
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/// Return true if the instruction is a register to register move and return
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/// the source and dest operands and their sub-register indices by reference.
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virtual bool isMoveInstr(const MachineInstr &MI,
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unsigned &SrcReg, unsigned &DstReg,
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unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
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virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
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int &FrameIndex) const;
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virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
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int &FrameIndex) const;
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virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
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MachineBasicBlock *FBB,
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const SmallVectorImpl<MachineOperand> &Cond) const;
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virtual bool copyRegToReg(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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unsigned DestReg, unsigned SrcReg,
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const TargetRegisterClass *DestRC,
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const TargetRegisterClass *SrcRC) const;
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virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI,
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unsigned SrcReg, bool isKill, int FrameIndex,
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const TargetRegisterClass *RC) const;
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virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI,
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unsigned DestReg, int FrameIndex,
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const TargetRegisterClass *RC) const;
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virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
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MachineInstr* MI,
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const SmallVectorImpl<unsigned> &Ops,
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int FrameIndex) const;
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virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
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MachineInstr* MI,
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const SmallVectorImpl<unsigned> &Ops,
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MachineInstr* LoadMI) const {
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return 0;
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}
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bool AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB,
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MachineBasicBlock *&FBB,
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SmallVectorImpl<MachineOperand> &Cond,
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bool AllowModify) const;
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unsigned RemoveBranch(MachineBasicBlock &MBB) const;
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void insertNoop(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI) const;
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bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
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/// getGlobalBaseReg - Return a virtual register initialized with the
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/// the global base register value. Output instructions required to
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/// initialize the register in the function entry block, if necessary.
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///
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unsigned getGlobalBaseReg(MachineFunction *MF) const;
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/// getGlobalRetAddr - Return a virtual register initialized with the
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/// the global return address register value. Output instructions required to
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/// initialize the register in the function entry block, if necessary.
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///
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unsigned getGlobalRetAddr(MachineFunction *MF) const;
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};
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}
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#endif
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