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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
97 lines
4.3 KiB
C++
97 lines
4.3 KiB
C++
//===- XCoreInstrInfo.h - XCore 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 XCore implementation of the TargetInstrInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef XCOREINSTRUCTIONINFO_H
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#define XCOREINSTRUCTIONINFO_H
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#include "llvm/Target/TargetInstrInfo.h"
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#include "XCoreRegisterInfo.h"
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namespace llvm {
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class XCoreInstrInfo : public TargetInstrInfoImpl {
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const XCoreRegisterInfo RI;
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public:
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XCoreInstrInfo();
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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 TargetRegisterInfo &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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/// isLoadFromStackSlot - If the specified machine instruction is a direct
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/// load from a stack slot, return the virtual or physical register number of
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/// the destination along with the FrameIndex of the loaded stack slot. If
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/// not, return 0. This predicate must return 0 if the instruction has
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/// any side effects other than loading from the stack slot.
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virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
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int &FrameIndex) const;
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/// isStoreToStackSlot - If the specified machine instruction is a direct
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/// store to a stack slot, return the virtual or physical register number of
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/// the source reg along with the FrameIndex of the loaded stack slot. If
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/// not, return 0. This predicate must return 0 if the instruction has
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/// any side effects other than storing to the stack slot.
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virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
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int &FrameIndex) const;
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virtual 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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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 unsigned RemoveBranch(MachineBasicBlock &MBB) const;
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virtual bool copyRegToReg(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I,
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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 MI,
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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 MI,
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unsigned DestReg, int FrameIndex,
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const TargetRegisterClass *RC) const;
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virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI) const;
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virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI) const;
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virtual bool ReverseBranchCondition(
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SmallVectorImpl<MachineOperand> &Cond) const;
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};
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}
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#endif
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