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7ca90a551a
Branch relaxation is needed to support branch displacements that overflow the instruction's immediate field. Differential Revision: https://reviews.llvm.org/D40830 llvm-svn: 322224
80 lines
3.1 KiB
C++
80 lines
3.1 KiB
C++
//===-- RISCVInstrInfo.h - RISCV 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 RISCV implementation of the TargetInstrInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_RISCV_RISCVINSTRINFO_H
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#define LLVM_LIB_TARGET_RISCV_RISCVINSTRINFO_H
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#include "RISCVRegisterInfo.h"
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#include "llvm/CodeGen/TargetInstrInfo.h"
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#define GET_INSTRINFO_HEADER
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#include "RISCVGenInstrInfo.inc"
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namespace llvm {
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class RISCVInstrInfo : public RISCVGenInstrInfo {
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public:
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RISCVInstrInfo();
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void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
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const DebugLoc &DL, unsigned DstReg, unsigned SrcReg,
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bool KillSrc) const override;
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void storeRegToStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI, unsigned SrcReg,
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bool IsKill, int FrameIndex,
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const TargetRegisterClass *RC,
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const TargetRegisterInfo *TRI) const override;
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void loadRegFromStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI, unsigned DstReg,
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int FrameIndex, const TargetRegisterClass *RC,
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const TargetRegisterInfo *TRI) const override;
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// Materializes the given int32 Val into DstReg.
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void movImm32(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
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const DebugLoc &DL, unsigned DstReg, uint64_t Val,
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MachineInstr::MIFlag Flag = MachineInstr::NoFlags) const;
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unsigned getInstSizeInBytes(const MachineInstr &MI) const override;
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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 override;
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unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
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MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
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const DebugLoc &dl,
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int *BytesAdded = nullptr) const override;
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unsigned insertIndirectBranch(MachineBasicBlock &MBB,
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MachineBasicBlock &NewDestBB,
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const DebugLoc &DL, int64_t BrOffset,
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RegScavenger *RS = nullptr) const override;
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unsigned removeBranch(MachineBasicBlock &MBB,
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int *BytesRemoved = nullptr) const override;
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bool
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reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
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MachineBasicBlock *getBranchDestBlock(const MachineInstr &MI) const override;
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bool isBranchOffsetInRange(unsigned BranchOpc,
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int64_t BrOffset) const override;
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};
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}
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#endif
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