mirror of
https://github.com/RPCS3/llvm-mirror.git
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446072f9b7
Reviewers: arsenm Differential Revision: https://reviews.llvm.org/D58360 llvm-svn: 373024
1144 lines
40 KiB
C++
1144 lines
40 KiB
C++
//===- SIInstrInfo.h - SI Instruction Info Interface ------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// Interface definition for SIInstrInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AMDGPU_SIINSTRINFO_H
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#define LLVM_LIB_TARGET_AMDGPU_SIINSTRINFO_H
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#include "AMDGPUInstrInfo.h"
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#include "SIDefines.h"
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#include "SIRegisterInfo.h"
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#include "Utils/AMDGPUBaseInfo.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/CodeGen/MachineBasicBlock.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/MachineOperand.h"
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#include "llvm/MC/MCInstrDesc.h"
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#include "llvm/Support/Compiler.h"
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#include <cassert>
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#include <cstdint>
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#define GET_INSTRINFO_HEADER
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#include "AMDGPUGenInstrInfo.inc"
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namespace llvm {
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class APInt;
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class MachineDominatorTree;
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class MachineRegisterInfo;
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class RegScavenger;
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class GCNSubtarget;
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class TargetRegisterClass;
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class SIInstrInfo final : public AMDGPUGenInstrInfo {
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private:
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const SIRegisterInfo RI;
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const GCNSubtarget &ST;
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// The inverse predicate should have the negative value.
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enum BranchPredicate {
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INVALID_BR = 0,
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SCC_TRUE = 1,
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SCC_FALSE = -1,
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VCCNZ = 2,
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VCCZ = -2,
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EXECNZ = -3,
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EXECZ = 3
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};
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using SetVectorType = SmallSetVector<MachineInstr *, 32>;
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static unsigned getBranchOpcode(BranchPredicate Cond);
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static BranchPredicate getBranchPredicate(unsigned Opcode);
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public:
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unsigned buildExtractSubReg(MachineBasicBlock::iterator MI,
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MachineRegisterInfo &MRI,
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MachineOperand &SuperReg,
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const TargetRegisterClass *SuperRC,
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unsigned SubIdx,
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const TargetRegisterClass *SubRC) const;
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MachineOperand buildExtractSubRegOrImm(MachineBasicBlock::iterator MI,
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MachineRegisterInfo &MRI,
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MachineOperand &SuperReg,
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const TargetRegisterClass *SuperRC,
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unsigned SubIdx,
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const TargetRegisterClass *SubRC) const;
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private:
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void swapOperands(MachineInstr &Inst) const;
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bool moveScalarAddSub(SetVectorType &Worklist, MachineInstr &Inst,
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MachineDominatorTree *MDT = nullptr) const;
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void lowerScalarAbs(SetVectorType &Worklist,
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MachineInstr &Inst) const;
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void lowerScalarXnor(SetVectorType &Worklist,
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MachineInstr &Inst) const;
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void splitScalarNotBinop(SetVectorType &Worklist,
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MachineInstr &Inst,
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unsigned Opcode) const;
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void splitScalarBinOpN2(SetVectorType &Worklist,
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MachineInstr &Inst,
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unsigned Opcode) const;
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void splitScalar64BitUnaryOp(SetVectorType &Worklist,
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MachineInstr &Inst, unsigned Opcode) const;
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void splitScalar64BitAddSub(SetVectorType &Worklist, MachineInstr &Inst,
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MachineDominatorTree *MDT = nullptr) const;
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void splitScalar64BitBinaryOp(SetVectorType &Worklist, MachineInstr &Inst,
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unsigned Opcode,
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MachineDominatorTree *MDT = nullptr) const;
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void splitScalar64BitXnor(SetVectorType &Worklist, MachineInstr &Inst,
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MachineDominatorTree *MDT = nullptr) const;
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void splitScalar64BitBCNT(SetVectorType &Worklist,
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MachineInstr &Inst) const;
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void splitScalar64BitBFE(SetVectorType &Worklist,
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MachineInstr &Inst) const;
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void movePackToVALU(SetVectorType &Worklist,
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MachineRegisterInfo &MRI,
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MachineInstr &Inst) const;
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void addUsersToMoveToVALUWorklist(unsigned Reg, MachineRegisterInfo &MRI,
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SetVectorType &Worklist) const;
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void addSCCDefUsersToVALUWorklist(MachineOperand &Op,
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MachineInstr &SCCDefInst,
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SetVectorType &Worklist) const;
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const TargetRegisterClass *
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getDestEquivalentVGPRClass(const MachineInstr &Inst) const;
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bool checkInstOffsetsDoNotOverlap(const MachineInstr &MIa,
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const MachineInstr &MIb) const;
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unsigned findUsedSGPR(const MachineInstr &MI, int OpIndices[3]) const;
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protected:
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bool swapSourceModifiers(MachineInstr &MI,
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MachineOperand &Src0, unsigned Src0OpName,
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MachineOperand &Src1, unsigned Src1OpName) const;
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MachineInstr *commuteInstructionImpl(MachineInstr &MI, bool NewMI,
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unsigned OpIdx0,
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unsigned OpIdx1) const override;
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public:
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enum TargetOperandFlags {
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MO_MASK = 0xf,
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MO_NONE = 0,
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// MO_GOTPCREL -> symbol@GOTPCREL -> R_AMDGPU_GOTPCREL.
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MO_GOTPCREL = 1,
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// MO_GOTPCREL32_LO -> symbol@gotpcrel32@lo -> R_AMDGPU_GOTPCREL32_LO.
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MO_GOTPCREL32 = 2,
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MO_GOTPCREL32_LO = 2,
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// MO_GOTPCREL32_HI -> symbol@gotpcrel32@hi -> R_AMDGPU_GOTPCREL32_HI.
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MO_GOTPCREL32_HI = 3,
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// MO_REL32_LO -> symbol@rel32@lo -> R_AMDGPU_REL32_LO.
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MO_REL32 = 4,
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MO_REL32_LO = 4,
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// MO_REL32_HI -> symbol@rel32@hi -> R_AMDGPU_REL32_HI.
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MO_REL32_HI = 5,
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MO_LONG_BRANCH_FORWARD = 6,
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MO_LONG_BRANCH_BACKWARD = 7,
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MO_ABS32_LO = 8,
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MO_ABS32_HI = 9,
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};
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explicit SIInstrInfo(const GCNSubtarget &ST);
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const SIRegisterInfo &getRegisterInfo() const {
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return RI;
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}
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bool isReallyTriviallyReMaterializable(const MachineInstr &MI,
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AliasAnalysis *AA) const override;
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bool areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
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int64_t &Offset1,
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int64_t &Offset2) const override;
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bool getMemOperandWithOffset(const MachineInstr &LdSt,
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const MachineOperand *&BaseOp,
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int64_t &Offset,
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const TargetRegisterInfo *TRI) const final;
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bool shouldClusterMemOps(const MachineOperand &BaseOp1,
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const MachineOperand &BaseOp2,
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unsigned NumLoads) const override;
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bool shouldScheduleLoadsNear(SDNode *Load0, SDNode *Load1, int64_t Offset0,
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int64_t Offset1, unsigned NumLoads) const override;
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void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
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const DebugLoc &DL, unsigned DestReg, unsigned SrcReg,
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bool KillSrc) const override;
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unsigned calculateLDSSpillAddress(MachineBasicBlock &MBB, MachineInstr &MI,
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RegScavenger *RS, unsigned TmpReg,
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unsigned Offset, unsigned Size) const;
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void materializeImmediate(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const DebugLoc &DL,
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unsigned DestReg,
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int64_t Value) const;
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const TargetRegisterClass *getPreferredSelectRegClass(
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unsigned Size) const;
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unsigned insertNE(MachineBasicBlock *MBB,
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MachineBasicBlock::iterator I, const DebugLoc &DL,
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unsigned SrcReg, int Value) const;
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unsigned insertEQ(MachineBasicBlock *MBB,
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MachineBasicBlock::iterator I, const DebugLoc &DL,
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unsigned SrcReg, int Value) const;
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void storeRegToStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI, 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 MI, unsigned DestReg,
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int FrameIndex, const TargetRegisterClass *RC,
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const TargetRegisterInfo *TRI) const override;
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bool expandPostRAPseudo(MachineInstr &MI) const override;
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// Returns an opcode that can be used to move a value to a \p DstRC
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// register. If there is no hardware instruction that can store to \p
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// DstRC, then AMDGPU::COPY is returned.
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unsigned getMovOpcode(const TargetRegisterClass *DstRC) const;
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LLVM_READONLY
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int commuteOpcode(unsigned Opc) const;
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LLVM_READONLY
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inline int commuteOpcode(const MachineInstr &MI) const {
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return commuteOpcode(MI.getOpcode());
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}
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bool findCommutedOpIndices(const MachineInstr &MI, unsigned &SrcOpIdx1,
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unsigned &SrcOpIdx2) const override;
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bool findCommutedOpIndices(MCInstrDesc Desc, unsigned & SrcOpIdx0,
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unsigned & SrcOpIdx1) const;
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bool isBranchOffsetInRange(unsigned BranchOpc,
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int64_t BrOffset) const override;
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MachineBasicBlock *getBranchDestBlock(const MachineInstr &MI) const override;
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unsigned insertIndirectBranch(MachineBasicBlock &MBB,
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MachineBasicBlock &NewDestBB,
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const DebugLoc &DL,
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int64_t BrOffset,
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RegScavenger *RS = nullptr) const override;
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bool analyzeBranchImpl(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I,
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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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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 = false) const override;
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unsigned removeBranch(MachineBasicBlock &MBB,
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int *BytesRemoved = nullptr) 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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bool reverseBranchCondition(
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SmallVectorImpl<MachineOperand> &Cond) const override;
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bool canInsertSelect(const MachineBasicBlock &MBB,
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ArrayRef<MachineOperand> Cond,
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unsigned TrueReg, unsigned FalseReg,
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int &CondCycles,
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int &TrueCycles, int &FalseCycles) const override;
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void insertSelect(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I, const DebugLoc &DL,
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unsigned DstReg, ArrayRef<MachineOperand> Cond,
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unsigned TrueReg, unsigned FalseReg) const override;
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void insertVectorSelect(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I, const DebugLoc &DL,
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unsigned DstReg, ArrayRef<MachineOperand> Cond,
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unsigned TrueReg, unsigned FalseReg) const;
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unsigned getAddressSpaceForPseudoSourceKind(
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unsigned Kind) const override;
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bool
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areMemAccessesTriviallyDisjoint(const MachineInstr &MIa,
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const MachineInstr &MIb) const override;
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bool isFoldableCopy(const MachineInstr &MI) const;
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bool FoldImmediate(MachineInstr &UseMI, MachineInstr &DefMI, unsigned Reg,
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MachineRegisterInfo *MRI) const final;
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unsigned getMachineCSELookAheadLimit() const override { return 500; }
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MachineInstr *convertToThreeAddress(MachineFunction::iterator &MBB,
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MachineInstr &MI,
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LiveVariables *LV) const override;
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bool isSchedulingBoundary(const MachineInstr &MI,
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const MachineBasicBlock *MBB,
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const MachineFunction &MF) const override;
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static bool isSALU(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SALU;
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}
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bool isSALU(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SALU;
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}
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static bool isVALU(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::VALU;
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}
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bool isVALU(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::VALU;
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}
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static bool isVMEM(const MachineInstr &MI) {
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return isMUBUF(MI) || isMTBUF(MI) || isMIMG(MI);
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}
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bool isVMEM(uint16_t Opcode) const {
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return isMUBUF(Opcode) || isMTBUF(Opcode) || isMIMG(Opcode);
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}
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static bool isSOP1(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SOP1;
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}
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bool isSOP1(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SOP1;
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}
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static bool isSOP2(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SOP2;
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}
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bool isSOP2(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SOP2;
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}
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static bool isSOPC(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SOPC;
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}
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bool isSOPC(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SOPC;
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}
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static bool isSOPK(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SOPK;
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}
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bool isSOPK(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SOPK;
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}
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static bool isSOPP(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SOPP;
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}
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bool isSOPP(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SOPP;
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}
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static bool isPacked(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::IsPacked;
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}
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bool isPacked(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::IsPacked;
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}
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static bool isVOP1(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::VOP1;
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}
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bool isVOP1(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::VOP1;
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}
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static bool isVOP2(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::VOP2;
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}
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bool isVOP2(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::VOP2;
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}
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static bool isVOP3(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::VOP3;
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}
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bool isVOP3(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::VOP3;
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}
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static bool isSDWA(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SDWA;
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}
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bool isSDWA(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SDWA;
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}
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static bool isVOPC(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::VOPC;
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}
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bool isVOPC(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::VOPC;
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}
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static bool isMUBUF(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::MUBUF;
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}
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bool isMUBUF(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::MUBUF;
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}
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static bool isMTBUF(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::MTBUF;
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}
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bool isMTBUF(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::MTBUF;
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}
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static bool isSMRD(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::SMRD;
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}
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bool isSMRD(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::SMRD;
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}
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bool isBufferSMRD(const MachineInstr &MI) const;
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static bool isDS(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::DS;
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}
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bool isDS(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::DS;
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}
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bool isAlwaysGDS(uint16_t Opcode) const;
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static bool isMIMG(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::MIMG;
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}
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bool isMIMG(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::MIMG;
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}
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static bool isGather4(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::Gather4;
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}
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bool isGather4(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::Gather4;
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}
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static bool isFLAT(const MachineInstr &MI) {
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return MI.getDesc().TSFlags & SIInstrFlags::FLAT;
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}
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// Is a FLAT encoded instruction which accesses a specific segment,
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// i.e. global_* or scratch_*.
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static bool isSegmentSpecificFLAT(const MachineInstr &MI) {
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auto Flags = MI.getDesc().TSFlags;
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return (Flags & SIInstrFlags::FLAT) && !(Flags & SIInstrFlags::LGKM_CNT);
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}
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// FIXME: Make this more precise
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static bool isFLATScratch(const MachineInstr &MI) {
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return isSegmentSpecificFLAT(MI);
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}
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// Any FLAT encoded instruction, including global_* and scratch_*.
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bool isFLAT(uint16_t Opcode) const {
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return get(Opcode).TSFlags & SIInstrFlags::FLAT;
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}
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|
|
static bool isEXP(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::EXP;
|
|
}
|
|
|
|
bool isEXP(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::EXP;
|
|
}
|
|
|
|
static bool isWQM(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::WQM;
|
|
}
|
|
|
|
bool isWQM(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::WQM;
|
|
}
|
|
|
|
static bool isDisableWQM(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::DisableWQM;
|
|
}
|
|
|
|
bool isDisableWQM(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::DisableWQM;
|
|
}
|
|
|
|
static bool isVGPRSpill(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::VGPRSpill;
|
|
}
|
|
|
|
bool isVGPRSpill(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::VGPRSpill;
|
|
}
|
|
|
|
static bool isSGPRSpill(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::SGPRSpill;
|
|
}
|
|
|
|
bool isSGPRSpill(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::SGPRSpill;
|
|
}
|
|
|
|
static bool isDPP(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::DPP;
|
|
}
|
|
|
|
bool isDPP(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::DPP;
|
|
}
|
|
|
|
static bool isVOP3P(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::VOP3P;
|
|
}
|
|
|
|
bool isVOP3P(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::VOP3P;
|
|
}
|
|
|
|
static bool isVINTRP(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::VINTRP;
|
|
}
|
|
|
|
bool isVINTRP(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::VINTRP;
|
|
}
|
|
|
|
static bool isMAI(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::IsMAI;
|
|
}
|
|
|
|
bool isMAI(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::IsMAI;
|
|
}
|
|
|
|
static bool isDOT(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::IsDOT;
|
|
}
|
|
|
|
bool isDOT(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::IsDOT;
|
|
}
|
|
|
|
static bool isScalarUnit(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & (SIInstrFlags::SALU | SIInstrFlags::SMRD);
|
|
}
|
|
|
|
static bool usesVM_CNT(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::VM_CNT;
|
|
}
|
|
|
|
static bool usesLGKM_CNT(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::LGKM_CNT;
|
|
}
|
|
|
|
static bool sopkIsZext(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::SOPK_ZEXT;
|
|
}
|
|
|
|
bool sopkIsZext(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::SOPK_ZEXT;
|
|
}
|
|
|
|
/// \returns true if this is an s_store_dword* instruction. This is more
|
|
/// specific than than isSMEM && mayStore.
|
|
static bool isScalarStore(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::SCALAR_STORE;
|
|
}
|
|
|
|
bool isScalarStore(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::SCALAR_STORE;
|
|
}
|
|
|
|
static bool isFixedSize(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::FIXED_SIZE;
|
|
}
|
|
|
|
bool isFixedSize(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::FIXED_SIZE;
|
|
}
|
|
|
|
static bool hasFPClamp(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::FPClamp;
|
|
}
|
|
|
|
bool hasFPClamp(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::FPClamp;
|
|
}
|
|
|
|
static bool hasIntClamp(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::IntClamp;
|
|
}
|
|
|
|
uint64_t getClampMask(const MachineInstr &MI) const {
|
|
const uint64_t ClampFlags = SIInstrFlags::FPClamp |
|
|
SIInstrFlags::IntClamp |
|
|
SIInstrFlags::ClampLo |
|
|
SIInstrFlags::ClampHi;
|
|
return MI.getDesc().TSFlags & ClampFlags;
|
|
}
|
|
|
|
static bool usesFPDPRounding(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::FPDPRounding;
|
|
}
|
|
|
|
bool usesFPDPRounding(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::FPDPRounding;
|
|
}
|
|
|
|
static bool isFPAtomic(const MachineInstr &MI) {
|
|
return MI.getDesc().TSFlags & SIInstrFlags::FPAtomic;
|
|
}
|
|
|
|
bool isFPAtomic(uint16_t Opcode) const {
|
|
return get(Opcode).TSFlags & SIInstrFlags::FPAtomic;
|
|
}
|
|
|
|
bool isVGPRCopy(const MachineInstr &MI) const {
|
|
assert(MI.isCopy());
|
|
unsigned Dest = MI.getOperand(0).getReg();
|
|
const MachineFunction &MF = *MI.getParent()->getParent();
|
|
const MachineRegisterInfo &MRI = MF.getRegInfo();
|
|
return !RI.isSGPRReg(MRI, Dest);
|
|
}
|
|
|
|
bool hasVGPRUses(const MachineInstr &MI) const {
|
|
const MachineFunction &MF = *MI.getParent()->getParent();
|
|
const MachineRegisterInfo &MRI = MF.getRegInfo();
|
|
return llvm::any_of(MI.explicit_uses(),
|
|
[&MRI, this](const MachineOperand &MO) {
|
|
return MO.isReg() && RI.isVGPR(MRI, MO.getReg());});
|
|
}
|
|
|
|
/// Whether we must prevent this instruction from executing with EXEC = 0.
|
|
bool hasUnwantedEffectsWhenEXECEmpty(const MachineInstr &MI) const;
|
|
|
|
/// Returns true if the instruction could potentially depend on the value of
|
|
/// exec. If false, exec dependencies may safely be ignored.
|
|
bool mayReadEXEC(const MachineRegisterInfo &MRI, const MachineInstr &MI) const;
|
|
|
|
bool isInlineConstant(const APInt &Imm) const;
|
|
|
|
bool isInlineConstant(const MachineOperand &MO, uint8_t OperandType) const;
|
|
|
|
bool isInlineConstant(const MachineOperand &MO,
|
|
const MCOperandInfo &OpInfo) const {
|
|
return isInlineConstant(MO, OpInfo.OperandType);
|
|
}
|
|
|
|
/// \p returns true if \p UseMO is substituted with \p DefMO in \p MI it would
|
|
/// be an inline immediate.
|
|
bool isInlineConstant(const MachineInstr &MI,
|
|
const MachineOperand &UseMO,
|
|
const MachineOperand &DefMO) const {
|
|
assert(UseMO.getParent() == &MI);
|
|
int OpIdx = MI.getOperandNo(&UseMO);
|
|
if (!MI.getDesc().OpInfo || OpIdx >= MI.getDesc().NumOperands) {
|
|
return false;
|
|
}
|
|
|
|
return isInlineConstant(DefMO, MI.getDesc().OpInfo[OpIdx]);
|
|
}
|
|
|
|
/// \p returns true if the operand \p OpIdx in \p MI is a valid inline
|
|
/// immediate.
|
|
bool isInlineConstant(const MachineInstr &MI, unsigned OpIdx) const {
|
|
const MachineOperand &MO = MI.getOperand(OpIdx);
|
|
return isInlineConstant(MO, MI.getDesc().OpInfo[OpIdx].OperandType);
|
|
}
|
|
|
|
bool isInlineConstant(const MachineInstr &MI, unsigned OpIdx,
|
|
const MachineOperand &MO) const {
|
|
if (!MI.getDesc().OpInfo || OpIdx >= MI.getDesc().NumOperands)
|
|
return false;
|
|
|
|
if (MI.isCopy()) {
|
|
unsigned Size = getOpSize(MI, OpIdx);
|
|
assert(Size == 8 || Size == 4);
|
|
|
|
uint8_t OpType = (Size == 8) ?
|
|
AMDGPU::OPERAND_REG_IMM_INT64 : AMDGPU::OPERAND_REG_IMM_INT32;
|
|
return isInlineConstant(MO, OpType);
|
|
}
|
|
|
|
return isInlineConstant(MO, MI.getDesc().OpInfo[OpIdx].OperandType);
|
|
}
|
|
|
|
bool isInlineConstant(const MachineOperand &MO) const {
|
|
const MachineInstr *Parent = MO.getParent();
|
|
return isInlineConstant(*Parent, Parent->getOperandNo(&MO));
|
|
}
|
|
|
|
bool isLiteralConstant(const MachineOperand &MO,
|
|
const MCOperandInfo &OpInfo) const {
|
|
return MO.isImm() && !isInlineConstant(MO, OpInfo.OperandType);
|
|
}
|
|
|
|
bool isLiteralConstant(const MachineInstr &MI, int OpIdx) const {
|
|
const MachineOperand &MO = MI.getOperand(OpIdx);
|
|
return MO.isImm() && !isInlineConstant(MI, OpIdx);
|
|
}
|
|
|
|
// Returns true if this operand could potentially require a 32-bit literal
|
|
// operand, but not necessarily. A FrameIndex for example could resolve to an
|
|
// inline immediate value that will not require an additional 4-bytes; this
|
|
// assumes that it will.
|
|
bool isLiteralConstantLike(const MachineOperand &MO,
|
|
const MCOperandInfo &OpInfo) const;
|
|
|
|
bool isImmOperandLegal(const MachineInstr &MI, unsigned OpNo,
|
|
const MachineOperand &MO) const;
|
|
|
|
/// Return true if this 64-bit VALU instruction has a 32-bit encoding.
|
|
/// This function will return false if you pass it a 32-bit instruction.
|
|
bool hasVALU32BitEncoding(unsigned Opcode) const;
|
|
|
|
/// Returns true if this operand uses the constant bus.
|
|
bool usesConstantBus(const MachineRegisterInfo &MRI,
|
|
const MachineOperand &MO,
|
|
const MCOperandInfo &OpInfo) const;
|
|
|
|
/// Return true if this instruction has any modifiers.
|
|
/// e.g. src[012]_mod, omod, clamp.
|
|
bool hasModifiers(unsigned Opcode) const;
|
|
|
|
bool hasModifiersSet(const MachineInstr &MI,
|
|
unsigned OpName) const;
|
|
bool hasAnyModifiersSet(const MachineInstr &MI) const;
|
|
|
|
bool canShrink(const MachineInstr &MI,
|
|
const MachineRegisterInfo &MRI) const;
|
|
|
|
MachineInstr *buildShrunkInst(MachineInstr &MI,
|
|
unsigned NewOpcode) const;
|
|
|
|
bool verifyInstruction(const MachineInstr &MI,
|
|
StringRef &ErrInfo) const override;
|
|
|
|
unsigned getVALUOp(const MachineInstr &MI) const;
|
|
|
|
/// Return the correct register class for \p OpNo. For target-specific
|
|
/// instructions, this will return the register class that has been defined
|
|
/// in tablegen. For generic instructions, like REG_SEQUENCE it will return
|
|
/// the register class of its machine operand.
|
|
/// to infer the correct register class base on the other operands.
|
|
const TargetRegisterClass *getOpRegClass(const MachineInstr &MI,
|
|
unsigned OpNo) const;
|
|
|
|
/// Return the size in bytes of the operand OpNo on the given
|
|
// instruction opcode.
|
|
unsigned getOpSize(uint16_t Opcode, unsigned OpNo) const {
|
|
const MCOperandInfo &OpInfo = get(Opcode).OpInfo[OpNo];
|
|
|
|
if (OpInfo.RegClass == -1) {
|
|
// If this is an immediate operand, this must be a 32-bit literal.
|
|
assert(OpInfo.OperandType == MCOI::OPERAND_IMMEDIATE);
|
|
return 4;
|
|
}
|
|
|
|
return RI.getRegSizeInBits(*RI.getRegClass(OpInfo.RegClass)) / 8;
|
|
}
|
|
|
|
/// This form should usually be preferred since it handles operands
|
|
/// with unknown register classes.
|
|
unsigned getOpSize(const MachineInstr &MI, unsigned OpNo) const {
|
|
const MachineOperand &MO = MI.getOperand(OpNo);
|
|
if (MO.isReg()) {
|
|
if (unsigned SubReg = MO.getSubReg()) {
|
|
assert(RI.getRegSizeInBits(*RI.getSubClassWithSubReg(
|
|
MI.getParent()->getParent()->getRegInfo().
|
|
getRegClass(MO.getReg()), SubReg)) >= 32 &&
|
|
"Sub-dword subregs are not supported");
|
|
return RI.getSubRegIndexLaneMask(SubReg).getNumLanes() * 4;
|
|
}
|
|
}
|
|
return RI.getRegSizeInBits(*getOpRegClass(MI, OpNo)) / 8;
|
|
}
|
|
|
|
/// Legalize the \p OpIndex operand of this instruction by inserting
|
|
/// a MOV. For example:
|
|
/// ADD_I32_e32 VGPR0, 15
|
|
/// to
|
|
/// MOV VGPR1, 15
|
|
/// ADD_I32_e32 VGPR0, VGPR1
|
|
///
|
|
/// If the operand being legalized is a register, then a COPY will be used
|
|
/// instead of MOV.
|
|
void legalizeOpWithMove(MachineInstr &MI, unsigned OpIdx) const;
|
|
|
|
/// Check if \p MO is a legal operand if it was the \p OpIdx Operand
|
|
/// for \p MI.
|
|
bool isOperandLegal(const MachineInstr &MI, unsigned OpIdx,
|
|
const MachineOperand *MO = nullptr) const;
|
|
|
|
/// Check if \p MO would be a valid operand for the given operand
|
|
/// definition \p OpInfo. Note this does not attempt to validate constant bus
|
|
/// restrictions (e.g. literal constant usage).
|
|
bool isLegalVSrcOperand(const MachineRegisterInfo &MRI,
|
|
const MCOperandInfo &OpInfo,
|
|
const MachineOperand &MO) const;
|
|
|
|
/// Check if \p MO (a register operand) is a legal register for the
|
|
/// given operand description.
|
|
bool isLegalRegOperand(const MachineRegisterInfo &MRI,
|
|
const MCOperandInfo &OpInfo,
|
|
const MachineOperand &MO) const;
|
|
|
|
/// Legalize operands in \p MI by either commuting it or inserting a
|
|
/// copy of src1.
|
|
void legalizeOperandsVOP2(MachineRegisterInfo &MRI, MachineInstr &MI) const;
|
|
|
|
/// Fix operands in \p MI to satisfy constant bus requirements.
|
|
void legalizeOperandsVOP3(MachineRegisterInfo &MRI, MachineInstr &MI) const;
|
|
|
|
/// Copy a value from a VGPR (\p SrcReg) to SGPR. This function can only
|
|
/// be used when it is know that the value in SrcReg is same across all
|
|
/// threads in the wave.
|
|
/// \returns The SGPR register that \p SrcReg was copied to.
|
|
unsigned readlaneVGPRToSGPR(unsigned SrcReg, MachineInstr &UseMI,
|
|
MachineRegisterInfo &MRI) const;
|
|
|
|
void legalizeOperandsSMRD(MachineRegisterInfo &MRI, MachineInstr &MI) const;
|
|
|
|
void legalizeGenericOperand(MachineBasicBlock &InsertMBB,
|
|
MachineBasicBlock::iterator I,
|
|
const TargetRegisterClass *DstRC,
|
|
MachineOperand &Op, MachineRegisterInfo &MRI,
|
|
const DebugLoc &DL) const;
|
|
|
|
/// Legalize all operands in this instruction. This function may create new
|
|
/// instructions and control-flow around \p MI. If present, \p MDT is
|
|
/// updated.
|
|
void legalizeOperands(MachineInstr &MI,
|
|
MachineDominatorTree *MDT = nullptr) const;
|
|
|
|
/// Replace this instruction's opcode with the equivalent VALU
|
|
/// opcode. This function will also move the users of \p MI to the
|
|
/// VALU if necessary. If present, \p MDT is updated.
|
|
void moveToVALU(MachineInstr &MI, MachineDominatorTree *MDT = nullptr) const;
|
|
|
|
void insertWaitStates(MachineBasicBlock &MBB,MachineBasicBlock::iterator MI,
|
|
int Count) const;
|
|
|
|
void insertNoop(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI) const override;
|
|
|
|
void insertReturn(MachineBasicBlock &MBB) const;
|
|
/// Return the number of wait states that result from executing this
|
|
/// instruction.
|
|
static unsigned getNumWaitStates(const MachineInstr &MI);
|
|
|
|
/// Returns the operand named \p Op. If \p MI does not have an
|
|
/// operand named \c Op, this function returns nullptr.
|
|
LLVM_READONLY
|
|
MachineOperand *getNamedOperand(MachineInstr &MI, unsigned OperandName) const;
|
|
|
|
LLVM_READONLY
|
|
const MachineOperand *getNamedOperand(const MachineInstr &MI,
|
|
unsigned OpName) const {
|
|
return getNamedOperand(const_cast<MachineInstr &>(MI), OpName);
|
|
}
|
|
|
|
/// Get required immediate operand
|
|
int64_t getNamedImmOperand(const MachineInstr &MI, unsigned OpName) const {
|
|
int Idx = AMDGPU::getNamedOperandIdx(MI.getOpcode(), OpName);
|
|
return MI.getOperand(Idx).getImm();
|
|
}
|
|
|
|
uint64_t getDefaultRsrcDataFormat() const;
|
|
uint64_t getScratchRsrcWords23() const;
|
|
|
|
bool isLowLatencyInstruction(const MachineInstr &MI) const;
|
|
bool isHighLatencyInstruction(const MachineInstr &MI) const;
|
|
|
|
/// Return the descriptor of the target-specific machine instruction
|
|
/// that corresponds to the specified pseudo or native opcode.
|
|
const MCInstrDesc &getMCOpcodeFromPseudo(unsigned Opcode) const {
|
|
return get(pseudoToMCOpcode(Opcode));
|
|
}
|
|
|
|
unsigned isStackAccess(const MachineInstr &MI, int &FrameIndex) const;
|
|
unsigned isSGPRStackAccess(const MachineInstr &MI, int &FrameIndex) const;
|
|
|
|
unsigned isLoadFromStackSlot(const MachineInstr &MI,
|
|
int &FrameIndex) const override;
|
|
unsigned isStoreToStackSlot(const MachineInstr &MI,
|
|
int &FrameIndex) const override;
|
|
|
|
unsigned getInstBundleSize(const MachineInstr &MI) const;
|
|
unsigned getInstSizeInBytes(const MachineInstr &MI) const override;
|
|
|
|
bool mayAccessFlatAddressSpace(const MachineInstr &MI) const;
|
|
|
|
bool isNonUniformBranchInstr(MachineInstr &Instr) const;
|
|
|
|
void convertNonUniformIfRegion(MachineBasicBlock *IfEntry,
|
|
MachineBasicBlock *IfEnd) const;
|
|
|
|
void convertNonUniformLoopRegion(MachineBasicBlock *LoopEntry,
|
|
MachineBasicBlock *LoopEnd) const;
|
|
|
|
std::pair<unsigned, unsigned>
|
|
decomposeMachineOperandsTargetFlags(unsigned TF) const override;
|
|
|
|
ArrayRef<std::pair<int, const char *>>
|
|
getSerializableTargetIndices() const override;
|
|
|
|
ArrayRef<std::pair<unsigned, const char *>>
|
|
getSerializableDirectMachineOperandTargetFlags() const override;
|
|
|
|
ScheduleHazardRecognizer *
|
|
CreateTargetPostRAHazardRecognizer(const InstrItineraryData *II,
|
|
const ScheduleDAG *DAG) const override;
|
|
|
|
ScheduleHazardRecognizer *
|
|
CreateTargetPostRAHazardRecognizer(const MachineFunction &MF) const override;
|
|
|
|
bool isBasicBlockPrologue(const MachineInstr &MI) const override;
|
|
|
|
MachineInstr *createPHIDestinationCopy(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator InsPt,
|
|
const DebugLoc &DL, Register Src,
|
|
Register Dst) const override;
|
|
|
|
MachineInstr *createPHISourceCopy(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator InsPt,
|
|
const DebugLoc &DL, Register Src,
|
|
Register SrcSubReg,
|
|
Register Dst) const override;
|
|
|
|
bool isWave32() const;
|
|
|
|
/// Return a partially built integer add instruction without carry.
|
|
/// Caller must add source operands.
|
|
/// For pre-GFX9 it will generate unused carry destination operand.
|
|
/// TODO: After GFX9 it should return a no-carry operation.
|
|
MachineInstrBuilder getAddNoCarry(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator I,
|
|
const DebugLoc &DL,
|
|
unsigned DestReg) const;
|
|
|
|
MachineInstrBuilder getAddNoCarry(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator I,
|
|
const DebugLoc &DL,
|
|
Register DestReg,
|
|
RegScavenger &RS) const;
|
|
|
|
static bool isKillTerminator(unsigned Opcode);
|
|
const MCInstrDesc &getKillTerminatorFromPseudo(unsigned Opcode) const;
|
|
|
|
static bool isLegalMUBUFImmOffset(unsigned Imm) {
|
|
return isUInt<12>(Imm);
|
|
}
|
|
|
|
/// Returns if \p Offset is legal for the subtarget as the offset to a FLAT
|
|
/// encoded instruction. If \p Signed, this is for an instruction that
|
|
/// interprets the offset as signed.
|
|
bool isLegalFLATOffset(int64_t Offset, unsigned AddrSpace,
|
|
bool Signed) const;
|
|
|
|
/// \brief Return a target-specific opcode if Opcode is a pseudo instruction.
|
|
/// Return -1 if the target-specific opcode for the pseudo instruction does
|
|
/// not exist. If Opcode is not a pseudo instruction, this is identity.
|
|
int pseudoToMCOpcode(int Opcode) const;
|
|
|
|
const TargetRegisterClass *getRegClass(const MCInstrDesc &TID, unsigned OpNum,
|
|
const TargetRegisterInfo *TRI,
|
|
const MachineFunction &MF)
|
|
const override {
|
|
if (OpNum >= TID.getNumOperands())
|
|
return nullptr;
|
|
return RI.getRegClass(TID.OpInfo[OpNum].RegClass);
|
|
}
|
|
|
|
void fixImplicitOperands(MachineInstr &MI) const;
|
|
};
|
|
|
|
/// \brief Returns true if a reg:subreg pair P has a TRC class
|
|
inline bool isOfRegClass(const TargetInstrInfo::RegSubRegPair &P,
|
|
const TargetRegisterClass &TRC,
|
|
MachineRegisterInfo &MRI) {
|
|
auto *RC = MRI.getRegClass(P.Reg);
|
|
if (!P.SubReg)
|
|
return RC == &TRC;
|
|
auto *TRI = MRI.getTargetRegisterInfo();
|
|
return RC == TRI->getMatchingSuperRegClass(RC, &TRC, P.SubReg);
|
|
}
|
|
|
|
/// \brief Create RegSubRegPair from a register MachineOperand
|
|
inline
|
|
TargetInstrInfo::RegSubRegPair getRegSubRegPair(const MachineOperand &O) {
|
|
assert(O.isReg());
|
|
return TargetInstrInfo::RegSubRegPair(O.getReg(), O.getSubReg());
|
|
}
|
|
|
|
/// \brief Return the SubReg component from REG_SEQUENCE
|
|
TargetInstrInfo::RegSubRegPair getRegSequenceSubReg(MachineInstr &MI,
|
|
unsigned SubReg);
|
|
|
|
/// \brief Return the defining instruction for a given reg:subreg pair
|
|
/// skipping copy like instructions and subreg-manipulation pseudos.
|
|
/// Following another subreg of a reg:subreg isn't supported.
|
|
MachineInstr *getVRegSubRegDef(const TargetInstrInfo::RegSubRegPair &P,
|
|
MachineRegisterInfo &MRI);
|
|
|
|
/// \brief Return false if EXEC is not changed between the def of \p VReg at \p
|
|
/// DefMI and the use at \p UseMI. Should be run on SSA. Currently does not
|
|
/// attempt to track between blocks.
|
|
bool execMayBeModifiedBeforeUse(const MachineRegisterInfo &MRI,
|
|
Register VReg,
|
|
const MachineInstr &DefMI,
|
|
const MachineInstr &UseMI);
|
|
|
|
/// \brief Return false if EXEC is not changed between the def of \p VReg at \p
|
|
/// DefMI and all its uses. Should be run on SSA. Currently does not attempt to
|
|
/// track between blocks.
|
|
bool execMayBeModifiedBeforeAnyUse(const MachineRegisterInfo &MRI,
|
|
Register VReg,
|
|
const MachineInstr &DefMI);
|
|
|
|
namespace AMDGPU {
|
|
|
|
LLVM_READONLY
|
|
int getVOPe64(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getVOPe32(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getSDWAOp(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getDPPOp32(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getBasicFromSDWAOp(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getCommuteRev(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getCommuteOrig(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getAddr64Inst(uint16_t Opcode);
|
|
|
|
/// Check if \p Opcode is an Addr64 opcode.
|
|
///
|
|
/// \returns \p Opcode if it is an Addr64 opcode, otherwise -1.
|
|
LLVM_READONLY
|
|
int getIfAddr64Inst(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getMUBUFNoLdsInst(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getAtomicRetOp(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getAtomicNoRetOp(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getSOPKOp(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getGlobalSaddrOp(uint16_t Opcode);
|
|
|
|
LLVM_READONLY
|
|
int getVCMPXNoSDstOp(uint16_t Opcode);
|
|
|
|
const uint64_t RSRC_DATA_FORMAT = 0xf00000000000LL;
|
|
const uint64_t RSRC_ELEMENT_SIZE_SHIFT = (32 + 19);
|
|
const uint64_t RSRC_INDEX_STRIDE_SHIFT = (32 + 21);
|
|
const uint64_t RSRC_TID_ENABLE = UINT64_C(1) << (32 + 23);
|
|
|
|
} // end namespace AMDGPU
|
|
|
|
namespace SI {
|
|
namespace KernelInputOffsets {
|
|
|
|
/// Offsets in bytes from the start of the input buffer
|
|
enum Offsets {
|
|
NGROUPS_X = 0,
|
|
NGROUPS_Y = 4,
|
|
NGROUPS_Z = 8,
|
|
GLOBAL_SIZE_X = 12,
|
|
GLOBAL_SIZE_Y = 16,
|
|
GLOBAL_SIZE_Z = 20,
|
|
LOCAL_SIZE_X = 24,
|
|
LOCAL_SIZE_Y = 28,
|
|
LOCAL_SIZE_Z = 32
|
|
};
|
|
|
|
} // end namespace KernelInputOffsets
|
|
} // end namespace SI
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_LIB_TARGET_AMDGPU_SIINSTRINFO_H
|