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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217968 91177308-0d34-0410-b5e6-96231b3b80d8
255 lines
10 KiB
C++
255 lines
10 KiB
C++
//===-- SIInstrInfo.h - SI Instruction Info Interface -----------*- 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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/// \file
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/// \brief Interface definition for SIInstrInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_R600_SIINSTRINFO_H
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#define LLVM_LIB_TARGET_R600_SIINSTRINFO_H
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#include "AMDGPUInstrInfo.h"
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#include "SIRegisterInfo.h"
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namespace llvm {
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class SIInstrInfo : public AMDGPUInstrInfo {
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private:
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const SIRegisterInfo RI;
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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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unsigned split64BitImm(SmallVectorImpl<MachineInstr *> &Worklist,
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MachineBasicBlock::iterator MI,
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MachineRegisterInfo &MRI,
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const TargetRegisterClass *RC,
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const MachineOperand &Op) const;
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void splitScalar64BitUnaryOp(SmallVectorImpl<MachineInstr *> &Worklist,
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MachineInstr *Inst, unsigned Opcode) const;
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void splitScalar64BitBinaryOp(SmallVectorImpl<MachineInstr *> &Worklist,
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MachineInstr *Inst, unsigned Opcode) const;
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void splitScalar64BitBCNT(SmallVectorImpl<MachineInstr *> &Worklist,
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MachineInstr *Inst) const;
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void addDescImplicitUseDef(const MCInstrDesc &Desc, MachineInstr *MI) const;
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public:
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explicit SIInstrInfo(const AMDGPUSubtarget &st);
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const SIRegisterInfo &getRegisterInfo() const override {
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return RI;
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}
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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 getLdStBaseRegImmOfs(MachineInstr *LdSt,
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unsigned &BaseReg, unsigned &Offset,
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const TargetRegisterInfo *TRI) const final;
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bool shouldClusterLoads(MachineInstr *FirstLdSt,
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MachineInstr *SecondLdSt,
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unsigned NumLoads) const final;
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void copyPhysReg(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI, DebugLoc DL,
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unsigned DestReg, unsigned SrcReg,
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bool KillSrc) const override;
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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,
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const TargetRegisterInfo *TRI) const override;
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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,
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const TargetRegisterInfo *TRI) const override;
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bool expandPostRAPseudo(MachineBasicBlock::iterator MI) const override;
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unsigned commuteOpcode(unsigned Opcode) const;
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MachineInstr *commuteInstruction(MachineInstr *MI,
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bool NewMI=false) const override;
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bool isTriviallyReMaterializable(const MachineInstr *MI,
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AliasAnalysis *AA = nullptr) const;
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MachineInstr *buildMovInstr(MachineBasicBlock *MBB,
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MachineBasicBlock::iterator I,
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unsigned DstReg, unsigned SrcReg) const override;
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bool isMov(unsigned Opcode) const override;
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bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const override;
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bool isDS(uint16_t Opcode) const;
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bool isMIMG(uint16_t Opcode) const;
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bool isSMRD(uint16_t Opcode) const;
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bool isMUBUF(uint16_t Opcode) const;
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bool isMTBUF(uint16_t Opcode) const;
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bool isFLAT(uint16_t Opcode) const;
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bool isVOP1(uint16_t Opcode) const;
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bool isVOP2(uint16_t Opcode) const;
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bool isVOP3(uint16_t Opcode) const;
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bool isVOPC(uint16_t Opcode) const;
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bool isInlineConstant(const APInt &Imm) const;
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bool isInlineConstant(const MachineOperand &MO) const;
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bool isLiteralConstant(const MachineOperand &MO) const;
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bool isImmOperandLegal(const MachineInstr *MI, unsigned OpNo,
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const MachineOperand &MO) const;
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/// \brief Return true if the given offset Size in bytes can be folded into
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/// the immediate offsets of a memory instruction for the given address space.
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static bool canFoldOffset(unsigned OffsetSize, unsigned AS) LLVM_READNONE;
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/// \brief Return true if this 64-bit VALU instruction has a 32-bit encoding.
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/// This function will return false if you pass it a 32-bit instruction.
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bool hasVALU32BitEncoding(unsigned Opcode) const;
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/// \brief Return true if this instruction has any modifiers.
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/// e.g. src[012]_mod, omod, clamp.
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bool hasModifiers(unsigned Opcode) const;
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bool verifyInstruction(const MachineInstr *MI,
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StringRef &ErrInfo) const override;
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bool isSALUInstr(const MachineInstr &MI) const;
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static unsigned getVALUOp(const MachineInstr &MI);
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bool isSALUOpSupportedOnVALU(const MachineInstr &MI) const;
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/// \brief Return the correct register class for \p OpNo. For target-specific
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/// instructions, this will return the register class that has been defined
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/// in tablegen. For generic instructions, like REG_SEQUENCE it will return
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/// the register class of its machine operand.
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/// to infer the correct register class base on the other operands.
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const TargetRegisterClass *getOpRegClass(const MachineInstr &MI,
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unsigned OpNo) const;\
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/// \returns true if it is legal for the operand at index \p OpNo
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/// to read a VGPR.
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bool canReadVGPR(const MachineInstr &MI, unsigned OpNo) const;
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/// \brief Legalize the \p OpIndex operand of this instruction by inserting
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/// a MOV. For example:
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/// ADD_I32_e32 VGPR0, 15
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/// to
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/// MOV VGPR1, 15
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/// ADD_I32_e32 VGPR0, VGPR1
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///
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/// If the operand being legalized is a register, then a COPY will be used
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/// instead of MOV.
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void legalizeOpWithMove(MachineInstr *MI, unsigned OpIdx) const;
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/// \brief Check if \p MO is a legal operand if it was the \p OpIdx Operand
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/// for \p MI.
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bool isOperandLegal(const MachineInstr *MI, unsigned OpIdx,
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const MachineOperand *MO = nullptr) const;
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/// \brief Legalize all operands in this instruction. This function may
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/// create new instruction and insert them before \p MI.
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void legalizeOperands(MachineInstr *MI) const;
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/// \brief Split an SMRD instruction into two smaller loads of half the
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// size storing the results in \p Lo and \p Hi.
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void splitSMRD(MachineInstr *MI, const TargetRegisterClass *HalfRC,
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unsigned HalfImmOp, unsigned HalfSGPROp,
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MachineInstr *&Lo, MachineInstr *&Hi) const;
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void moveSMRDToVALU(MachineInstr *MI, MachineRegisterInfo &MRI) const;
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/// \brief Replace this instruction's opcode with the equivalent VALU
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/// opcode. This function will also move the users of \p MI to the
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/// VALU if necessary.
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void moveToVALU(MachineInstr &MI) const;
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unsigned calculateIndirectAddress(unsigned RegIndex,
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unsigned Channel) const override;
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const TargetRegisterClass *getIndirectAddrRegClass() const override;
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MachineInstrBuilder buildIndirectWrite(MachineBasicBlock *MBB,
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MachineBasicBlock::iterator I,
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unsigned ValueReg,
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unsigned Address,
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unsigned OffsetReg) const override;
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MachineInstrBuilder buildIndirectRead(MachineBasicBlock *MBB,
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MachineBasicBlock::iterator I,
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unsigned ValueReg,
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unsigned Address,
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unsigned OffsetReg) const override;
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void reserveIndirectRegisters(BitVector &Reserved,
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const MachineFunction &MF) const;
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void LoadM0(MachineInstr *MoveRel, MachineBasicBlock::iterator I,
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unsigned SavReg, unsigned IndexReg) const;
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void insertNOPs(MachineBasicBlock::iterator MI, int Count) const;
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/// \brief Returns the operand named \p Op. If \p MI does not have an
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/// operand named \c Op, this function returns nullptr.
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MachineOperand *getNamedOperand(MachineInstr &MI, unsigned OperandName) const;
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};
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namespace AMDGPU {
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int getVOPe64(uint16_t Opcode);
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int getVOPe32(uint16_t Opcode);
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int getCommuteRev(uint16_t Opcode);
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int getCommuteOrig(uint16_t Opcode);
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int getMCOpcode(uint16_t Opcode, unsigned Gen);
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int getAddr64Inst(uint16_t Opcode);
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int getAtomicRetOp(uint16_t Opcode);
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int getAtomicNoRetOp(uint16_t Opcode);
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const uint64_t RSRC_DATA_FORMAT = 0xf00000000000LL;
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const uint64_t RSRC_TID_ENABLE = 1LL << 55;
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} // End namespace AMDGPU
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} // End namespace llvm
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namespace SIInstrFlags {
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enum Flags {
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// First 4 bits are the instruction encoding
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VM_CNT = 1 << 0,
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EXP_CNT = 1 << 1,
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LGKM_CNT = 1 << 2
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};
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}
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namespace SISrcMods {
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enum {
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NEG = 1 << 0,
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ABS = 1 << 1
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};
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}
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#endif
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