1 //===-- SIInstrInfo.h - SI Instruction Info Interface -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief Interface definition for SIInstrInfo.
13 //===----------------------------------------------------------------------===//
19 #include "AMDGPUInstrInfo.h"
20 #include "SIRegisterInfo.h"
24 class SIInstrInfo : public AMDGPUInstrInfo {
26 const SIRegisterInfo RI;
28 unsigned buildExtractSubReg(MachineBasicBlock::iterator MI,
29 MachineRegisterInfo &MRI,
30 MachineOperand &SuperReg,
31 const TargetRegisterClass *SuperRC,
33 const TargetRegisterClass *SubRC) const;
34 MachineOperand buildExtractSubRegOrImm(MachineBasicBlock::iterator MI,
35 MachineRegisterInfo &MRI,
36 MachineOperand &SuperReg,
37 const TargetRegisterClass *SuperRC,
39 const TargetRegisterClass *SubRC) const;
41 unsigned split64BitImm(SmallVectorImpl<MachineInstr *> &Worklist,
42 MachineBasicBlock::iterator MI,
43 MachineRegisterInfo &MRI,
44 const TargetRegisterClass *RC,
45 const MachineOperand &Op) const;
47 void splitScalar64BitUnaryOp(SmallVectorImpl<MachineInstr *> &Worklist,
48 MachineInstr *Inst, unsigned Opcode) const;
50 void splitScalar64BitBinaryOp(SmallVectorImpl<MachineInstr *> &Worklist,
51 MachineInstr *Inst, unsigned Opcode) const;
53 void splitScalar64BitBCNT(SmallVectorImpl<MachineInstr *> &Worklist,
54 MachineInstr *Inst) const;
56 void addDescImplicitUseDef(const MCInstrDesc &Desc, MachineInstr *MI) const;
59 explicit SIInstrInfo(const AMDGPUSubtarget &st);
61 const SIRegisterInfo &getRegisterInfo() const override {
65 void copyPhysReg(MachineBasicBlock &MBB,
66 MachineBasicBlock::iterator MI, DebugLoc DL,
67 unsigned DestReg, unsigned SrcReg,
68 bool KillSrc) const override;
70 void storeRegToStackSlot(MachineBasicBlock &MBB,
71 MachineBasicBlock::iterator MI,
72 unsigned SrcReg, bool isKill, int FrameIndex,
73 const TargetRegisterClass *RC,
74 const TargetRegisterInfo *TRI) const override;
76 void loadRegFromStackSlot(MachineBasicBlock &MBB,
77 MachineBasicBlock::iterator MI,
78 unsigned DestReg, int FrameIndex,
79 const TargetRegisterClass *RC,
80 const TargetRegisterInfo *TRI) const override;
82 virtual bool expandPostRAPseudo(MachineBasicBlock::iterator MI) const;
84 unsigned commuteOpcode(unsigned Opcode) const;
86 MachineInstr *commuteInstruction(MachineInstr *MI,
87 bool NewMI=false) const override;
89 bool isTriviallyReMaterializable(const MachineInstr *MI,
90 AliasAnalysis *AA = nullptr) const;
92 MachineInstr *buildMovInstr(MachineBasicBlock *MBB,
93 MachineBasicBlock::iterator I,
94 unsigned DstReg, unsigned SrcReg) const override;
95 bool isMov(unsigned Opcode) const override;
97 bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const override;
98 bool isDS(uint16_t Opcode) const;
99 int isMIMG(uint16_t Opcode) const;
100 int isSMRD(uint16_t Opcode) const;
101 bool isVOP1(uint16_t Opcode) const;
102 bool isVOP2(uint16_t Opcode) const;
103 bool isVOP3(uint16_t Opcode) const;
104 bool isVOPC(uint16_t Opcode) const;
105 bool isInlineConstant(const APInt &Imm) const;
106 bool isInlineConstant(const MachineOperand &MO) const;
107 bool isLiteralConstant(const MachineOperand &MO) const;
109 bool verifyInstruction(const MachineInstr *MI,
110 StringRef &ErrInfo) const override;
112 bool isSALUInstr(const MachineInstr &MI) const;
113 static unsigned getVALUOp(const MachineInstr &MI);
115 bool isSALUOpSupportedOnVALU(const MachineInstr &MI) const;
117 /// \brief Return the correct register class for \p OpNo. For target-specific
118 /// instructions, this will return the register class that has been defined
119 /// in tablegen. For generic instructions, like REG_SEQUENCE it will return
120 /// the register class of its machine operand.
121 /// to infer the correct register class base on the other operands.
122 const TargetRegisterClass *getOpRegClass(const MachineInstr &MI,
123 unsigned OpNo) const;\
125 /// \returns true if it is legal for the operand at index \p OpNo
127 bool canReadVGPR(const MachineInstr &MI, unsigned OpNo) const;
129 /// \brief Legalize the \p OpIndex operand of this instruction by inserting
130 /// a MOV. For example:
131 /// ADD_I32_e32 VGPR0, 15
134 /// ADD_I32_e32 VGPR0, VGPR1
136 /// If the operand being legalized is a register, then a COPY will be used
138 void legalizeOpWithMove(MachineInstr *MI, unsigned OpIdx) const;
140 /// \brief Legalize all operands in this instruction. This function may
141 /// create new instruction and insert them before \p MI.
142 void legalizeOperands(MachineInstr *MI) const;
144 void moveSMRDToVALU(MachineInstr *MI, MachineRegisterInfo &MRI) const;
146 /// \brief Replace this instruction's opcode with the equivalent VALU
147 /// opcode. This function will also move the users of \p MI to the
148 /// VALU if necessary.
149 void moveToVALU(MachineInstr &MI) const;
151 unsigned calculateIndirectAddress(unsigned RegIndex,
152 unsigned Channel) const override;
154 const TargetRegisterClass *getIndirectAddrRegClass() const override;
156 MachineInstrBuilder buildIndirectWrite(MachineBasicBlock *MBB,
157 MachineBasicBlock::iterator I,
160 unsigned OffsetReg) const override;
162 MachineInstrBuilder buildIndirectRead(MachineBasicBlock *MBB,
163 MachineBasicBlock::iterator I,
166 unsigned OffsetReg) const override;
167 void reserveIndirectRegisters(BitVector &Reserved,
168 const MachineFunction &MF) const;
170 void LoadM0(MachineInstr *MoveRel, MachineBasicBlock::iterator I,
171 unsigned SavReg, unsigned IndexReg) const;
173 void insertNOPs(MachineBasicBlock::iterator MI, int Count) const;
178 int getVOPe64(uint16_t Opcode);
179 int getCommuteRev(uint16_t Opcode);
180 int getCommuteOrig(uint16_t Opcode);
181 int getMCOpcode(uint16_t Opcode, unsigned Gen);
183 const uint64_t RSRC_DATA_FORMAT = 0xf00000000000LL;
186 } // End namespace AMDGPU
188 } // End namespace llvm
190 namespace SIInstrFlags {
192 // First 4 bits are the instruction encoding
199 #endif //SIINSTRINFO_H