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 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_LIB_TARGET_R600_SIINSTRINFO_H
17 #define LLVM_LIB_TARGET_R600_SIINSTRINFO_H
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 bool areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
67 int64_t &Offset2) const override;
69 bool getLdStBaseRegImmOfs(MachineInstr *LdSt,
70 unsigned &BaseReg, unsigned &Offset,
71 const TargetRegisterInfo *TRI) const final;
73 bool shouldClusterLoads(MachineInstr *FirstLdSt,
74 MachineInstr *SecondLdSt,
75 unsigned NumLoads) const final;
77 void copyPhysReg(MachineBasicBlock &MBB,
78 MachineBasicBlock::iterator MI, DebugLoc DL,
79 unsigned DestReg, unsigned SrcReg,
80 bool KillSrc) const override;
82 unsigned calculateLDSSpillAddress(MachineBasicBlock &MBB,
83 MachineBasicBlock::iterator MI,
89 void storeRegToStackSlot(MachineBasicBlock &MBB,
90 MachineBasicBlock::iterator MI,
91 unsigned SrcReg, bool isKill, int FrameIndex,
92 const TargetRegisterClass *RC,
93 const TargetRegisterInfo *TRI) const override;
95 void loadRegFromStackSlot(MachineBasicBlock &MBB,
96 MachineBasicBlock::iterator MI,
97 unsigned DestReg, int FrameIndex,
98 const TargetRegisterClass *RC,
99 const TargetRegisterInfo *TRI) const override;
101 bool expandPostRAPseudo(MachineBasicBlock::iterator MI) const override;
103 unsigned commuteOpcode(unsigned Opcode) const;
105 MachineInstr *commuteInstruction(MachineInstr *MI,
106 bool NewMI = false) const override;
107 bool findCommutedOpIndices(MachineInstr *MI,
109 unsigned &SrcOpIdx2) const override;
111 bool isTriviallyReMaterializable(const MachineInstr *MI,
112 AliasAnalysis *AA = nullptr) const;
114 MachineInstr *buildMovInstr(MachineBasicBlock *MBB,
115 MachineBasicBlock::iterator I,
116 unsigned DstReg, unsigned SrcReg) const override;
117 bool isMov(unsigned Opcode) const override;
119 bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const override;
120 bool isDS(uint16_t Opcode) const;
121 bool isMIMG(uint16_t Opcode) const;
122 bool isSMRD(uint16_t Opcode) const;
123 bool isMUBUF(uint16_t Opcode) const;
124 bool isMTBUF(uint16_t Opcode) const;
125 bool isFLAT(uint16_t Opcode) const;
126 bool isVOP1(uint16_t Opcode) const;
127 bool isVOP2(uint16_t Opcode) const;
128 bool isVOP3(uint16_t Opcode) const;
129 bool isVOPC(uint16_t Opcode) const;
130 bool isInlineConstant(const APInt &Imm) const;
131 bool isInlineConstant(const MachineOperand &MO) const;
132 bool isLiteralConstant(const MachineOperand &MO) const;
134 bool isImmOperandLegal(const MachineInstr *MI, unsigned OpNo,
135 const MachineOperand &MO) const;
137 /// \brief Return true if the given offset Size in bytes can be folded into
138 /// the immediate offsets of a memory instruction for the given address space.
139 static bool canFoldOffset(unsigned OffsetSize, unsigned AS) LLVM_READNONE;
141 /// \brief Return true if this 64-bit VALU instruction has a 32-bit encoding.
142 /// This function will return false if you pass it a 32-bit instruction.
143 bool hasVALU32BitEncoding(unsigned Opcode) const;
145 /// \brief Returns true if this operand uses the constant bus.
146 bool usesConstantBus(const MachineRegisterInfo &MRI,
147 const MachineOperand &MO) const;
149 /// \brief Return true if this instruction has any modifiers.
150 /// e.g. src[012]_mod, omod, clamp.
151 bool hasModifiers(unsigned Opcode) const;
152 bool verifyInstruction(const MachineInstr *MI,
153 StringRef &ErrInfo) const override;
155 bool isSALUInstr(const MachineInstr &MI) const;
156 static unsigned getVALUOp(const MachineInstr &MI);
158 bool isSALUOpSupportedOnVALU(const MachineInstr &MI) const;
160 /// \brief Return the correct register class for \p OpNo. For target-specific
161 /// instructions, this will return the register class that has been defined
162 /// in tablegen. For generic instructions, like REG_SEQUENCE it will return
163 /// the register class of its machine operand.
164 /// to infer the correct register class base on the other operands.
165 const TargetRegisterClass *getOpRegClass(const MachineInstr &MI,
166 unsigned OpNo) const;\
168 /// \returns true if it is legal for the operand at index \p OpNo
170 bool canReadVGPR(const MachineInstr &MI, unsigned OpNo) const;
172 /// \brief Legalize the \p OpIndex operand of this instruction by inserting
173 /// a MOV. For example:
174 /// ADD_I32_e32 VGPR0, 15
177 /// ADD_I32_e32 VGPR0, VGPR1
179 /// If the operand being legalized is a register, then a COPY will be used
181 void legalizeOpWithMove(MachineInstr *MI, unsigned OpIdx) const;
183 /// \brief Check if \p MO is a legal operand if it was the \p OpIdx Operand
185 bool isOperandLegal(const MachineInstr *MI, unsigned OpIdx,
186 const MachineOperand *MO = nullptr) const;
188 /// \brief Legalize all operands in this instruction. This function may
189 /// create new instruction and insert them before \p MI.
190 void legalizeOperands(MachineInstr *MI) const;
192 /// \brief Split an SMRD instruction into two smaller loads of half the
193 // size storing the results in \p Lo and \p Hi.
194 void splitSMRD(MachineInstr *MI, const TargetRegisterClass *HalfRC,
195 unsigned HalfImmOp, unsigned HalfSGPROp,
196 MachineInstr *&Lo, MachineInstr *&Hi) const;
198 void moveSMRDToVALU(MachineInstr *MI, MachineRegisterInfo &MRI) const;
200 /// \brief Replace this instruction's opcode with the equivalent VALU
201 /// opcode. This function will also move the users of \p MI to the
202 /// VALU if necessary.
203 void moveToVALU(MachineInstr &MI) const;
205 unsigned calculateIndirectAddress(unsigned RegIndex,
206 unsigned Channel) const override;
208 const TargetRegisterClass *getIndirectAddrRegClass() const override;
210 MachineInstrBuilder buildIndirectWrite(MachineBasicBlock *MBB,
211 MachineBasicBlock::iterator I,
214 unsigned OffsetReg) const override;
216 MachineInstrBuilder buildIndirectRead(MachineBasicBlock *MBB,
217 MachineBasicBlock::iterator I,
220 unsigned OffsetReg) const override;
221 void reserveIndirectRegisters(BitVector &Reserved,
222 const MachineFunction &MF) const;
224 void LoadM0(MachineInstr *MoveRel, MachineBasicBlock::iterator I,
225 unsigned SavReg, unsigned IndexReg) const;
227 void insertNOPs(MachineBasicBlock::iterator MI, int Count) const;
229 /// \brief Returns the operand named \p Op. If \p MI does not have an
230 /// operand named \c Op, this function returns nullptr.
231 MachineOperand *getNamedOperand(MachineInstr &MI, unsigned OperandName) const;
236 int getVOPe64(uint16_t Opcode);
237 int getVOPe32(uint16_t Opcode);
238 int getCommuteRev(uint16_t Opcode);
239 int getCommuteOrig(uint16_t Opcode);
240 int getMCOpcode(uint16_t Opcode, unsigned Gen);
241 int getAddr64Inst(uint16_t Opcode);
242 int getAtomicRetOp(uint16_t Opcode);
243 int getAtomicNoRetOp(uint16_t Opcode);
245 const uint64_t RSRC_DATA_FORMAT = 0xf00000000000LL;
246 const uint64_t RSRC_TID_ENABLE = 1LL << 55;
248 } // End namespace AMDGPU
251 namespace KernelInputOffsets {
253 /// Offsets in bytes from the start of the input buffer
266 } // End namespace KernelInputOffsets
267 } // End namespace SI
269 } // End namespace llvm
271 namespace SIInstrFlags {
273 // First 4 bits are the instruction encoding
280 namespace SISrcMods {