1 //===-- RISCVInstrInfo.td - Target Description for RISCV ---*- tablegen -*-===//
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 //===----------------------------------------------------------------------===//
10 // This file describes the RISC-V instructions in TableGen format.
12 //===----------------------------------------------------------------------===//
14 include "RISCVInstrFormats.td"
16 //===----------------------------------------------------------------------===//
17 // RISC-V specific DAG Nodes.
18 //===----------------------------------------------------------------------===//
20 def SDT_RISCVCall : SDTypeProfile<0, -1, [SDTCisVT<0, XLenVT>]>;
21 def SDT_RISCVCallSeqStart : SDCallSeqStart<[SDTCisVT<0, i32>,
23 def SDT_RISCVCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>,
25 def SDT_RISCVSelectCC : SDTypeProfile<1, 5, [SDTCisSameAs<1, 2>,
30 def Call : SDNode<"RISCVISD::CALL", SDT_RISCVCall,
31 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue,
33 def CallSeqStart : SDNode<"ISD::CALLSEQ_START", SDT_RISCVCallSeqStart,
34 [SDNPHasChain, SDNPOutGlue]>;
35 def CallSeqEnd : SDNode<"ISD::CALLSEQ_END", SDT_RISCVCallSeqEnd,
36 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
37 def RetFlag : SDNode<"RISCVISD::RET_FLAG", SDTNone,
38 [SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>;
39 def URetFlag : SDNode<"RISCVISD::URET_FLAG", SDTNone,
40 [SDNPHasChain, SDNPOptInGlue]>;
41 def SRetFlag : SDNode<"RISCVISD::SRET_FLAG", SDTNone,
42 [SDNPHasChain, SDNPOptInGlue]>;
43 def MRetFlag : SDNode<"RISCVISD::MRET_FLAG", SDTNone,
44 [SDNPHasChain, SDNPOptInGlue]>;
45 def SelectCC : SDNode<"RISCVISD::SELECT_CC", SDT_RISCVSelectCC,
47 def Tail : SDNode<"RISCVISD::TAIL", SDT_RISCVCall,
48 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue,
51 //===----------------------------------------------------------------------===//
52 // Operand and SDNode transformation definitions.
53 //===----------------------------------------------------------------------===//
55 class ImmXLenAsmOperand<string prefix, string suffix = ""> : AsmOperandClass {
56 let Name = prefix # "ImmXLen" # suffix;
57 let RenderMethod = "addImmOperands";
58 let DiagnosticType = !strconcat("Invalid", Name);
61 class ImmAsmOperand<string prefix, int width, string suffix> : AsmOperandClass {
62 let Name = prefix # "Imm" # width # suffix;
63 let RenderMethod = "addImmOperands";
64 let DiagnosticType = !strconcat("Invalid", Name);
67 class SImmAsmOperand<int width, string suffix = "">
68 : ImmAsmOperand<"S", width, suffix> {
71 class UImmAsmOperand<int width, string suffix = "">
72 : ImmAsmOperand<"U", width, suffix> {
75 def FenceArg : AsmOperandClass {
76 let Name = "FenceArg";
77 let RenderMethod = "addFenceArgOperands";
78 let DiagnosticType = "InvalidFenceArg";
81 def fencearg : Operand<XLenVT> {
82 let ParserMatchClass = FenceArg;
83 let PrintMethod = "printFenceArg";
84 let DecoderMethod = "decodeUImmOperand<4>";
87 def UImmLog2XLenAsmOperand : AsmOperandClass {
88 let Name = "UImmLog2XLen";
89 let RenderMethod = "addImmOperands";
90 let DiagnosticType = "InvalidUImmLog2XLen";
93 def uimmlog2xlen : Operand<XLenVT>, ImmLeaf<XLenVT, [{
94 if (Subtarget->is64Bit())
95 return isUInt<6>(Imm);
96 return isUInt<5>(Imm);
98 let ParserMatchClass = UImmLog2XLenAsmOperand;
99 // TODO: should ensure invalid shamt is rejected when decoding.
100 let DecoderMethod = "decodeUImmOperand<6>";
101 let MCOperandPredicate = [{
103 if (!MCOp.evaluateAsConstantImm(Imm))
105 if (STI.getTargetTriple().isArch64Bit())
106 return isUInt<6>(Imm);
107 return isUInt<5>(Imm);
111 def uimm5 : Operand<XLenVT>, ImmLeaf<XLenVT, [{return isUInt<5>(Imm);}]> {
112 let ParserMatchClass = UImmAsmOperand<5>;
113 let DecoderMethod = "decodeUImmOperand<5>";
116 def simm12 : Operand<XLenVT>, ImmLeaf<XLenVT, [{return isInt<12>(Imm);}]> {
117 let ParserMatchClass = SImmAsmOperand<12>;
118 let EncoderMethod = "getImmOpValue";
119 let DecoderMethod = "decodeSImmOperand<12>";
120 let MCOperandPredicate = [{
122 if (MCOp.evaluateAsConstantImm(Imm))
123 return isInt<12>(Imm);
124 return MCOp.isBareSymbolRef();
128 // A 13-bit signed immediate where the least significant bit is zero.
129 def simm13_lsb0 : Operand<OtherVT> {
130 let ParserMatchClass = SImmAsmOperand<13, "Lsb0">;
131 let EncoderMethod = "getImmOpValueAsr1";
132 let DecoderMethod = "decodeSImmOperandAndLsl1<13>";
133 let MCOperandPredicate = [{
135 if (MCOp.evaluateAsConstantImm(Imm))
136 return isShiftedInt<12, 1>(Imm);
137 return MCOp.isBareSymbolRef();
141 class UImm20Operand : Operand<XLenVT> {
142 let EncoderMethod = "getImmOpValue";
143 let DecoderMethod = "decodeUImmOperand<20>";
144 let MCOperandPredicate = [{
146 if (MCOp.evaluateAsConstantImm(Imm))
147 return isUInt<20>(Imm);
148 return MCOp.isBareSymbolRef();
152 def uimm20_lui : UImm20Operand {
153 let ParserMatchClass = UImmAsmOperand<20, "LUI">;
155 def uimm20_auipc : UImm20Operand {
156 let ParserMatchClass = UImmAsmOperand<20, "AUIPC">;
159 def Simm21Lsb0JALAsmOperand : SImmAsmOperand<21, "Lsb0JAL"> {
160 let ParserMethod = "parseJALOffset";
163 // A 21-bit signed immediate where the least significant bit is zero.
164 def simm21_lsb0_jal : Operand<OtherVT> {
165 let ParserMatchClass = Simm21Lsb0JALAsmOperand;
166 let EncoderMethod = "getImmOpValueAsr1";
167 let DecoderMethod = "decodeSImmOperandAndLsl1<21>";
168 let MCOperandPredicate = [{
170 if (MCOp.evaluateAsConstantImm(Imm))
171 return isShiftedInt<20, 1>(Imm);
172 return MCOp.isBareSymbolRef();
176 def BareSymbol : AsmOperandClass {
177 let Name = "BareSymbol";
178 let RenderMethod = "addImmOperands";
179 let DiagnosticType = "InvalidBareSymbol";
180 let ParserMethod = "parseBareSymbol";
184 def bare_symbol : Operand<XLenVT> {
185 let ParserMatchClass = BareSymbol;
188 def CSRSystemRegister : AsmOperandClass {
189 let Name = "CSRSystemRegister";
190 let ParserMethod = "parseCSRSystemRegister";
191 let DiagnosticType = "InvalidCSRSystemRegister";
194 def csr_sysreg : Operand<XLenVT> {
195 let ParserMatchClass = CSRSystemRegister;
196 let PrintMethod = "printCSRSystemRegister";
197 let DecoderMethod = "decodeUImmOperand<12>";
200 // A parameterized register class alternative to i32imm/i64imm from Target.td.
201 def ixlenimm : Operand<XLenVT>;
203 def ixlenimm_li : Operand<XLenVT> {
204 let ParserMatchClass = ImmXLenAsmOperand<"", "LI">;
207 // Standalone (codegen-only) immleaf patterns.
208 def simm32 : ImmLeaf<XLenVT, [{return isInt<32>(Imm);}]>;
209 def simm32hi20 : ImmLeaf<XLenVT, [{return isShiftedInt<20, 12>(Imm);}]>;
210 // A mask value that won't affect significant shift bits.
211 def immbottomxlenset : ImmLeaf<XLenVT, [{
212 if (Subtarget->is64Bit())
213 return countTrailingOnes<uint64_t>(Imm) >= 6;
214 return countTrailingOnes<uint64_t>(Imm) >= 5;
218 // Necessary because a frameindex can't be matched directly in a pattern.
219 def AddrFI : ComplexPattern<iPTR, 1, "SelectAddrFI", [frameindex], []>;
221 // Extract least significant 12 bits from an immediate value and sign extend
223 def LO12Sext : SDNodeXForm<imm, [{
224 return CurDAG->getTargetConstant(SignExtend64<12>(N->getZExtValue()),
225 SDLoc(N), N->getValueType(0));
228 // Extract the most significant 20 bits from an immediate value. Add 1 if bit
229 // 11 is 1, to compensate for the low 12 bits in the matching immediate addi
230 // or ld/st being negative.
231 def HI20 : SDNodeXForm<imm, [{
232 return CurDAG->getTargetConstant(((N->getZExtValue()+0x800) >> 12) & 0xfffff,
233 SDLoc(N), N->getValueType(0));
236 //===----------------------------------------------------------------------===//
237 // Instruction Class Templates
238 //===----------------------------------------------------------------------===//
240 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
241 class BranchCC_rri<bits<3> funct3, string opcodestr>
242 : RVInstB<funct3, OPC_BRANCH, (outs),
243 (ins GPR:$rs1, GPR:$rs2, simm13_lsb0:$imm12),
244 opcodestr, "$rs1, $rs2, $imm12"> {
246 let isTerminator = 1;
249 let hasSideEffects = 0, mayLoad = 1, mayStore = 0 in
250 class Load_ri<bits<3> funct3, string opcodestr>
251 : RVInstI<funct3, OPC_LOAD, (outs GPR:$rd), (ins GPR:$rs1, simm12:$imm12),
252 opcodestr, "$rd, ${imm12}(${rs1})">;
254 // Operands for stores are in the order srcreg, base, offset rather than
255 // reflecting the order these fields are specified in the instruction
257 let hasSideEffects = 0, mayLoad = 0, mayStore = 1 in
258 class Store_rri<bits<3> funct3, string opcodestr>
259 : RVInstS<funct3, OPC_STORE, (outs),
260 (ins GPR:$rs2, GPR:$rs1, simm12:$imm12),
261 opcodestr, "$rs2, ${imm12}(${rs1})">;
263 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
264 class ALU_ri<bits<3> funct3, string opcodestr>
265 : RVInstI<funct3, OPC_OP_IMM, (outs GPR:$rd), (ins GPR:$rs1, simm12:$imm12),
266 opcodestr, "$rd, $rs1, $imm12">;
268 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
269 class Shift_ri<bit arithshift, bits<3> funct3, string opcodestr>
270 : RVInstIShift<arithshift, funct3, OPC_OP_IMM, (outs GPR:$rd),
271 (ins GPR:$rs1, uimmlog2xlen:$shamt), opcodestr,
272 "$rd, $rs1, $shamt">;
274 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
275 class ALU_rr<bits<7> funct7, bits<3> funct3, string opcodestr>
276 : RVInstR<funct7, funct3, OPC_OP, (outs GPR:$rd), (ins GPR:$rs1, GPR:$rs2),
277 opcodestr, "$rd, $rs1, $rs2">;
279 let hasSideEffects = 1, mayLoad = 0, mayStore = 0 in
280 class CSR_ir<bits<3> funct3, string opcodestr>
281 : RVInstI<funct3, OPC_SYSTEM, (outs GPR:$rd), (ins csr_sysreg:$imm12, GPR:$rs1),
282 opcodestr, "$rd, $imm12, $rs1">;
284 let hasSideEffects = 1, mayLoad = 0, mayStore = 0 in
285 class CSR_ii<bits<3> funct3, string opcodestr>
286 : RVInstI<funct3, OPC_SYSTEM, (outs GPR:$rd),
287 (ins csr_sysreg:$imm12, uimm5:$rs1),
288 opcodestr, "$rd, $imm12, $rs1">;
290 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
291 class ShiftW_ri<bit arithshift, bits<3> funct3, string opcodestr>
292 : RVInstIShiftW<arithshift, funct3, OPC_OP_IMM_32, (outs GPR:$rd),
293 (ins GPR:$rs1, uimm5:$shamt), opcodestr,
294 "$rd, $rs1, $shamt">;
296 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
297 class ALUW_rr<bits<7> funct7, bits<3> funct3, string opcodestr>
298 : RVInstR<funct7, funct3, OPC_OP_32, (outs GPR:$rd),
299 (ins GPR:$rs1, GPR:$rs2), opcodestr, "$rd, $rs1, $rs2">;
301 let hasSideEffects = 1, mayLoad = 0, mayStore = 0 in
302 class Priv<string opcodestr, bits<7> funct7>
303 : RVInstR<funct7, 0b000, OPC_SYSTEM, (outs), (ins GPR:$rs1, GPR:$rs2),
306 //===----------------------------------------------------------------------===//
308 //===----------------------------------------------------------------------===//
310 let hasSideEffects = 0, isReMaterializable = 1, mayLoad = 0, mayStore = 0 in {
311 def LUI : RVInstU<OPC_LUI, (outs GPR:$rd), (ins uimm20_lui:$imm20),
312 "lui", "$rd, $imm20">;
314 def AUIPC : RVInstU<OPC_AUIPC, (outs GPR:$rd), (ins uimm20_auipc:$imm20),
315 "auipc", "$rd, $imm20">;
318 def JAL : RVInstJ<OPC_JAL, (outs GPR:$rd), (ins simm21_lsb0_jal:$imm20),
319 "jal", "$rd, $imm20">;
322 def JALR : RVInstI<0b000, OPC_JALR, (outs GPR:$rd),
323 (ins GPR:$rs1, simm12:$imm12),
324 "jalr", "$rd, $rs1, $imm12">;
325 } // hasSideEffects = 0, mayLoad = 0, mayStore = 0
327 def BEQ : BranchCC_rri<0b000, "beq">;
328 def BNE : BranchCC_rri<0b001, "bne">;
329 def BLT : BranchCC_rri<0b100, "blt">;
330 def BGE : BranchCC_rri<0b101, "bge">;
331 def BLTU : BranchCC_rri<0b110, "bltu">;
332 def BGEU : BranchCC_rri<0b111, "bgeu">;
334 def LB : Load_ri<0b000, "lb">;
335 def LH : Load_ri<0b001, "lh">;
336 def LW : Load_ri<0b010, "lw">;
337 def LBU : Load_ri<0b100, "lbu">;
338 def LHU : Load_ri<0b101, "lhu">;
340 def SB : Store_rri<0b000, "sb">;
341 def SH : Store_rri<0b001, "sh">;
342 def SW : Store_rri<0b010, "sw">;
344 // ADDI isn't always rematerializable, but isReMaterializable will be used as
345 // a hint which is verified in isReallyTriviallyReMaterializable.
346 let isReMaterializable = 1 in
347 def ADDI : ALU_ri<0b000, "addi">;
349 def SLTI : ALU_ri<0b010, "slti">;
350 def SLTIU : ALU_ri<0b011, "sltiu">;
351 def XORI : ALU_ri<0b100, "xori">;
352 def ORI : ALU_ri<0b110, "ori">;
353 def ANDI : ALU_ri<0b111, "andi">;
355 def SLLI : Shift_ri<0, 0b001, "slli">;
356 def SRLI : Shift_ri<0, 0b101, "srli">;
357 def SRAI : Shift_ri<1, 0b101, "srai">;
359 def ADD : ALU_rr<0b0000000, 0b000, "add">;
360 def SUB : ALU_rr<0b0100000, 0b000, "sub">;
361 def SLL : ALU_rr<0b0000000, 0b001, "sll">;
362 def SLT : ALU_rr<0b0000000, 0b010, "slt">;
363 def SLTU : ALU_rr<0b0000000, 0b011, "sltu">;
364 def XOR : ALU_rr<0b0000000, 0b100, "xor">;
365 def SRL : ALU_rr<0b0000000, 0b101, "srl">;
366 def SRA : ALU_rr<0b0100000, 0b101, "sra">;
367 def OR : ALU_rr<0b0000000, 0b110, "or">;
368 def AND : ALU_rr<0b0000000, 0b111, "and">;
370 let hasSideEffects = 1, mayLoad = 0, mayStore = 0 in {
371 def FENCE : RVInstI<0b000, OPC_MISC_MEM, (outs),
372 (ins fencearg:$pred, fencearg:$succ),
373 "fence", "$pred, $succ"> {
379 let imm12 = {0b0000,pred,succ};
382 def FENCE_TSO : RVInstI<0b000, OPC_MISC_MEM, (outs), (ins), "fence.tso", ""> {
385 let imm12 = {0b1000,0b0011,0b0011};
388 def FENCE_I : RVInstI<0b001, OPC_MISC_MEM, (outs), (ins), "fence.i", ""> {
394 def ECALL : RVInstI<0b000, OPC_SYSTEM, (outs), (ins), "ecall", ""> {
400 def EBREAK : RVInstI<0b000, OPC_SYSTEM, (outs), (ins), "ebreak", ""> {
406 // This is a de facto standard (as set by GNU binutils) 32-bit unimplemented
407 // instruction (i.e., it should always trap, if your implementation has invalid
408 // instruction traps).
409 def UNIMP : RVInstI<0b001, OPC_SYSTEM, (outs), (ins), "unimp", ""> {
412 let imm12 = 0b110000000000;
414 } // hasSideEffects = 1, mayLoad = 0, mayStore = 0
416 def CSRRW : CSR_ir<0b001, "csrrw">;
417 def CSRRS : CSR_ir<0b010, "csrrs">;
418 def CSRRC : CSR_ir<0b011, "csrrc">;
420 def CSRRWI : CSR_ii<0b101, "csrrwi">;
421 def CSRRSI : CSR_ii<0b110, "csrrsi">;
422 def CSRRCI : CSR_ii<0b111, "csrrci">;
424 /// RV64I instructions
426 let Predicates = [IsRV64] in {
427 def LWU : Load_ri<0b110, "lwu">;
428 def LD : Load_ri<0b011, "ld">;
429 def SD : Store_rri<0b011, "sd">;
431 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
432 def ADDIW : RVInstI<0b000, OPC_OP_IMM_32, (outs GPR:$rd),
433 (ins GPR:$rs1, simm12:$imm12),
434 "addiw", "$rd, $rs1, $imm12">;
436 def SLLIW : ShiftW_ri<0, 0b001, "slliw">;
437 def SRLIW : ShiftW_ri<0, 0b101, "srliw">;
438 def SRAIW : ShiftW_ri<1, 0b101, "sraiw">;
440 def ADDW : ALUW_rr<0b0000000, 0b000, "addw">;
441 def SUBW : ALUW_rr<0b0100000, 0b000, "subw">;
442 def SLLW : ALUW_rr<0b0000000, 0b001, "sllw">;
443 def SRLW : ALUW_rr<0b0000000, 0b101, "srlw">;
444 def SRAW : ALUW_rr<0b0100000, 0b101, "sraw">;
445 } // Predicates = [IsRV64]
447 //===----------------------------------------------------------------------===//
448 // Privileged instructions
449 //===----------------------------------------------------------------------===//
451 let isBarrier = 1, isReturn = 1, isTerminator = 1 in {
452 def URET : Priv<"uret", 0b0000000> {
458 def SRET : Priv<"sret", 0b0001000> {
464 def MRET : Priv<"mret", 0b0011000> {
469 } // isBarrier = 1, isReturn = 1, isTerminator = 1
471 def WFI : Priv<"wfi", 0b0001000> {
477 let hasSideEffects = 1, mayLoad = 0, mayStore = 0 in
478 def SFENCE_VMA : RVInstR<0b0001001, 0b000, OPC_SYSTEM, (outs),
479 (ins GPR:$rs1, GPR:$rs2),
480 "sfence.vma", "$rs1, $rs2"> {
484 //===----------------------------------------------------------------------===//
485 // Assembler Pseudo Instructions (User-Level ISA, Version 2.2, Chapter 20)
486 //===----------------------------------------------------------------------===//
494 def : InstAlias<"nop", (ADDI X0, X0, 0)>;
496 // Note that the size is 32 because up to 8 32-bit instructions are needed to
497 // generate an arbitrary 64-bit immediate. However, the size does not really
498 // matter since PseudoLI is currently only used in the AsmParser where it gets
499 // expanded to real instructions immediately.
500 let hasSideEffects = 0, mayLoad = 0, mayStore = 0, Size = 32,
501 isCodeGenOnly = 0, isAsmParserOnly = 1 in
502 def PseudoLI : Pseudo<(outs GPR:$rd), (ins ixlenimm_li:$imm), [],
505 def : InstAlias<"mv $rd, $rs", (ADDI GPR:$rd, GPR:$rs, 0)>;
506 def : InstAlias<"not $rd, $rs", (XORI GPR:$rd, GPR:$rs, -1)>;
507 def : InstAlias<"neg $rd, $rs", (SUB GPR:$rd, X0, GPR:$rs)>;
509 let Predicates = [IsRV64] in {
510 def : InstAlias<"negw $rd, $rs", (SUBW GPR:$rd, X0, GPR:$rs)>;
511 def : InstAlias<"sext.w $rd, $rs", (ADDIW GPR:$rd, GPR:$rs, 0)>;
512 } // Predicates = [IsRV64]
514 def : InstAlias<"seqz $rd, $rs", (SLTIU GPR:$rd, GPR:$rs, 1)>;
515 def : InstAlias<"snez $rd, $rs", (SLTU GPR:$rd, X0, GPR:$rs)>;
516 def : InstAlias<"sltz $rd, $rs", (SLT GPR:$rd, GPR:$rs, X0)>;
517 def : InstAlias<"sgtz $rd, $rs", (SLT GPR:$rd, X0, GPR:$rs)>;
519 // sgt/sgtu are recognised by the GNU assembler but the canonical slt/sltu
520 // form will always be printed. Therefore, set a zero weight.
521 def : InstAlias<"sgt $rd, $rs, $rt", (SLT GPR:$rd, GPR:$rt, GPR:$rs), 0>;
522 def : InstAlias<"sgtu $rd, $rs, $rt", (SLTU GPR:$rd, GPR:$rt, GPR:$rs), 0>;
524 def : InstAlias<"beqz $rs, $offset",
525 (BEQ GPR:$rs, X0, simm13_lsb0:$offset)>;
526 def : InstAlias<"bnez $rs, $offset",
527 (BNE GPR:$rs, X0, simm13_lsb0:$offset)>;
528 def : InstAlias<"blez $rs, $offset",
529 (BGE X0, GPR:$rs, simm13_lsb0:$offset)>;
530 def : InstAlias<"bgez $rs, $offset",
531 (BGE GPR:$rs, X0, simm13_lsb0:$offset)>;
532 def : InstAlias<"bltz $rs, $offset",
533 (BLT GPR:$rs, X0, simm13_lsb0:$offset)>;
534 def : InstAlias<"bgtz $rs, $offset",
535 (BLT X0, GPR:$rs, simm13_lsb0:$offset)>;
537 // Always output the canonical mnemonic for the pseudo branch instructions.
538 // The GNU tools emit the canonical mnemonic for the branch pseudo instructions
539 // as well (e.g. "bgt" will be recognised by the assembler but never printed by
540 // objdump). Match this behaviour by setting a zero weight.
541 def : InstAlias<"bgt $rs, $rt, $offset",
542 (BLT GPR:$rt, GPR:$rs, simm13_lsb0:$offset), 0>;
543 def : InstAlias<"ble $rs, $rt, $offset",
544 (BGE GPR:$rt, GPR:$rs, simm13_lsb0:$offset), 0>;
545 def : InstAlias<"bgtu $rs, $rt, $offset",
546 (BLTU GPR:$rt, GPR:$rs, simm13_lsb0:$offset), 0>;
547 def : InstAlias<"bleu $rs, $rt, $offset",
548 (BGEU GPR:$rt, GPR:$rs, simm13_lsb0:$offset), 0>;
550 // "ret" has more weight since "ret" and "jr" alias the same "jalr" instruction.
551 def : InstAlias<"j $offset", (JAL X0, simm21_lsb0_jal:$offset)>;
552 def : InstAlias<"jal $offset", (JAL X1, simm21_lsb0_jal:$offset)>;
553 def : InstAlias<"jr $rs", (JALR X0, GPR:$rs, 0)>;
554 def : InstAlias<"jalr $rs", (JALR X1, GPR:$rs, 0)>;
555 def : InstAlias<"ret", (JALR X0, X1, 0), 2>;
559 def : InstAlias<"fence", (FENCE 0xF, 0xF)>; // 0xF == iorw
561 // CSR Addresses: 0xC00 == cycle, 0xC01 == time, 0xC02 == instret
562 // 0xC80 == cycleh, 0xC81 == timeh, 0xC82 == instreth
563 def : InstAlias<"rdinstret $rd", (CSRRS GPR:$rd, 0xC02, X0)>;
564 def : InstAlias<"rdcycle $rd", (CSRRS GPR:$rd, 0xC00, X0)>;
565 def : InstAlias<"rdtime $rd", (CSRRS GPR:$rd, 0xC01, X0)>;
567 let Predicates = [IsRV32] in {
568 def : InstAlias<"rdinstreth $rd", (CSRRS GPR:$rd, 0xC82, X0)>;
569 def : InstAlias<"rdcycleh $rd", (CSRRS GPR:$rd, 0xC80, X0)>;
570 def : InstAlias<"rdtimeh $rd", (CSRRS GPR:$rd, 0xC81, X0)>;
571 } // Predicates = [IsRV32]
573 def : InstAlias<"csrr $rd, $csr", (CSRRS GPR:$rd, csr_sysreg:$csr, X0)>;
574 def : InstAlias<"csrw $csr, $rs", (CSRRW X0, csr_sysreg:$csr, GPR:$rs)>;
575 def : InstAlias<"csrs $csr, $rs", (CSRRS X0, csr_sysreg:$csr, GPR:$rs)>;
576 def : InstAlias<"csrc $csr, $rs", (CSRRC X0, csr_sysreg:$csr, GPR:$rs)>;
578 def : InstAlias<"csrwi $csr, $imm", (CSRRWI X0, csr_sysreg:$csr, uimm5:$imm)>;
579 def : InstAlias<"csrsi $csr, $imm", (CSRRSI X0, csr_sysreg:$csr, uimm5:$imm)>;
580 def : InstAlias<"csrci $csr, $imm", (CSRRCI X0, csr_sysreg:$csr, uimm5:$imm)>;
582 let EmitPriority = 0 in {
583 def : InstAlias<"csrw $csr, $imm", (CSRRWI X0, csr_sysreg:$csr, uimm5:$imm)>;
584 def : InstAlias<"csrs $csr, $imm", (CSRRSI X0, csr_sysreg:$csr, uimm5:$imm)>;
585 def : InstAlias<"csrc $csr, $imm", (CSRRCI X0, csr_sysreg:$csr, uimm5:$imm)>;
587 def : InstAlias<"csrrw $rd, $csr, $imm", (CSRRWI GPR:$rd, csr_sysreg:$csr, uimm5:$imm)>;
588 def : InstAlias<"csrrs $rd, $csr, $imm", (CSRRSI GPR:$rd, csr_sysreg:$csr, uimm5:$imm)>;
589 def : InstAlias<"csrrc $rd, $csr, $imm", (CSRRCI GPR:$rd, csr_sysreg:$csr, uimm5:$imm)>;
592 def : InstAlias<"sfence.vma", (SFENCE_VMA X0, X0)>;
593 def : InstAlias<"sfence.vma $rs", (SFENCE_VMA GPR:$rs, X0)>;
595 let EmitPriority = 0 in {
596 def : InstAlias<"add $rd, $rs1, $imm12",
597 (ADDI GPR:$rd, GPR:$rs1, simm12:$imm12)>;
598 def : InstAlias<"and $rd, $rs1, $imm12",
599 (ANDI GPR:$rd, GPR:$rs1, simm12:$imm12)>;
600 def : InstAlias<"xor $rd, $rs1, $imm12",
601 (XORI GPR:$rd, GPR:$rs1, simm12:$imm12)>;
602 def : InstAlias<"or $rd, $rs1, $imm12",
603 (ORI GPR:$rd, GPR:$rs1, simm12:$imm12)>;
604 def : InstAlias<"sll $rd, $rs1, $shamt",
605 (SLLI GPR:$rd, GPR:$rs1, uimmlog2xlen:$shamt)>;
606 def : InstAlias<"srl $rd, $rs1, $shamt",
607 (SRLI GPR:$rd, GPR:$rs1, uimmlog2xlen:$shamt)>;
608 def : InstAlias<"sra $rd, $rs1, $shamt",
609 (SRAI GPR:$rd, GPR:$rs1, uimmlog2xlen:$shamt)>;
610 let Predicates = [IsRV64] in {
611 def : InstAlias<"addw $rd, $rs1, $imm12",
612 (ADDIW GPR:$rd, GPR:$rs1, simm12:$imm12)>;
613 def : InstAlias<"sllw $rd, $rs1, $shamt",
614 (SLLIW GPR:$rd, GPR:$rs1, uimm5:$shamt)>;
615 def : InstAlias<"srlw $rd, $rs1, $shamt",
616 (SRLIW GPR:$rd, GPR:$rs1, uimm5:$shamt)>;
617 def : InstAlias<"sraw $rd, $rs1, $shamt",
618 (SRAIW GPR:$rd, GPR:$rs1, uimm5:$shamt)>;
619 } // Predicates = [IsRV64]
620 def : InstAlias<"slt $rd, $rs1, $imm12",
621 (SLTI GPR:$rd, GPR:$rs1, simm12:$imm12)>;
622 def : InstAlias<"sltu $rd, $rs1, $imm12",
623 (SLTIU GPR:$rd, GPR:$rs1, simm12:$imm12)>;
626 def : MnemonicAlias<"move", "mv">;
628 // The SCALL and SBREAK instructions wererenamed to ECALL and EBREAK in
629 // version 2.1 of the user-level ISA. Like the GNU toolchain, we still accept
630 // the old name for backwards compatibility.
631 def : MnemonicAlias<"scall", "ecall">;
632 def : MnemonicAlias<"sbreak", "ebreak">;
634 //===----------------------------------------------------------------------===//
635 // Pseudo-instructions and codegen patterns
637 // Naming convention: For 'generic' pattern classes, we use the naming
638 // convention PatTy1Ty2. For pattern classes which offer a more complex
639 // expension, prefix the class name, e.g. BccPat.
640 //===----------------------------------------------------------------------===//
642 /// Generic pattern classes
644 class PatGprGpr<SDPatternOperator OpNode, RVInst Inst>
645 : Pat<(OpNode GPR:$rs1, GPR:$rs2), (Inst GPR:$rs1, GPR:$rs2)>;
646 class PatGprSimm12<SDPatternOperator OpNode, RVInstI Inst>
647 : Pat<(OpNode GPR:$rs1, simm12:$imm12), (Inst GPR:$rs1, simm12:$imm12)>;
648 class PatGprUimmLog2XLen<SDPatternOperator OpNode, RVInstIShift Inst>
649 : Pat<(OpNode GPR:$rs1, uimmlog2xlen:$shamt),
650 (Inst GPR:$rs1, uimmlog2xlen:$shamt)>;
654 def IsOrAdd: PatFrag<(ops node:$A, node:$B), (or node:$A, node:$B), [{
655 return isOrEquivalentToAdd(N);
657 def assertsexti32 : PatFrag<(ops node:$src), (assertsext node:$src), [{
658 return cast<VTSDNode>(N->getOperand(1))->getVT() == MVT::i32;
660 def sexti32 : PatFrags<(ops node:$src),
661 [(sext_inreg node:$src, i32),
662 (assertsexti32 node:$src)]>;
663 def assertzexti32 : PatFrag<(ops node:$src), (assertzext node:$src), [{
664 return cast<VTSDNode>(N->getOperand(1))->getVT() == MVT::i32;
666 def assertzexti5 : PatFrag<(ops node:$src), (assertzext node:$src), [{
667 return cast<VTSDNode>(N->getOperand(1))->getVT().getSizeInBits() <= 5;
669 def zexti32 : PatFrags<(ops node:$src),
670 [(and node:$src, 0xffffffff),
671 (assertzexti32 node:$src)]>;
672 // Defines a legal mask for (assertzexti5 (and src, mask)) to be combinable
673 // with a shiftw operation. The mask mustn't modify the lower 5 bits or the
675 def shiftwamt_mask : ImmLeaf<XLenVT, [{
676 return countTrailingOnes<uint64_t>(Imm) >= 5 && isUInt<32>(Imm);
678 def shiftwamt : PatFrags<(ops node:$src),
679 [(assertzexti5 (and node:$src, shiftwamt_mask)),
680 (assertzexti5 node:$src)]>;
684 def : Pat<(simm12:$imm), (ADDI X0, simm12:$imm)>;
685 def : Pat<(simm32hi20:$imm), (LUI (HI20 imm:$imm))>;
686 def : Pat<(simm32:$imm), (ADDI (LUI (HI20 imm:$imm)), (LO12Sext imm:$imm))>,
689 /// Simple arithmetic operations
691 def : PatGprGpr<add, ADD>;
692 def : PatGprSimm12<add, ADDI>;
693 def : PatGprGpr<sub, SUB>;
694 def : PatGprGpr<or, OR>;
695 def : PatGprSimm12<or, ORI>;
696 def : PatGprGpr<and, AND>;
697 def : PatGprSimm12<and, ANDI>;
698 def : PatGprGpr<xor, XOR>;
699 def : PatGprSimm12<xor, XORI>;
700 def : PatGprUimmLog2XLen<shl, SLLI>;
701 def : PatGprUimmLog2XLen<srl, SRLI>;
702 def : PatGprUimmLog2XLen<sra, SRAI>;
704 // Match both a plain shift and one where the shift amount is masked (this is
705 // typically introduced when the legalizer promotes the shift amount and
706 // zero-extends it). For RISC-V, the mask is unnecessary as shifts in the base
707 // ISA only read the least significant 5 bits (RV32I) or 6 bits (RV64I).
708 class shiftop<SDPatternOperator operator>
709 : PatFrags<(ops node:$val, node:$count),
710 [(operator node:$val, node:$count),
711 (operator node:$val, (and node:$count, immbottomxlenset))]>;
713 def : PatGprGpr<shiftop<shl>, SLL>;
714 def : PatGprGpr<shiftop<srl>, SRL>;
715 def : PatGprGpr<shiftop<sra>, SRA>;
717 /// FrameIndex calculations
719 def : Pat<(add (i32 AddrFI:$Rs), simm12:$imm12),
720 (ADDI (i32 AddrFI:$Rs), simm12:$imm12)>;
721 def : Pat<(IsOrAdd (i32 AddrFI:$Rs), simm12:$imm12),
722 (ADDI (i32 AddrFI:$Rs), simm12:$imm12)>;
726 def : PatGprGpr<setlt, SLT>;
727 def : PatGprSimm12<setlt, SLTI>;
728 def : PatGprGpr<setult, SLTU>;
729 def : PatGprSimm12<setult, SLTIU>;
731 // Define pattern expansions for setcc operations that aren't directly
732 // handled by a RISC-V instruction.
733 def : Pat<(seteq GPR:$rs1, 0), (SLTIU GPR:$rs1, 1)>;
734 def : Pat<(seteq GPR:$rs1, GPR:$rs2), (SLTIU (XOR GPR:$rs1, GPR:$rs2), 1)>;
735 def : Pat<(setne GPR:$rs1, 0), (SLTU X0, GPR:$rs1)>;
736 def : Pat<(setne GPR:$rs1, GPR:$rs2), (SLTU X0, (XOR GPR:$rs1, GPR:$rs2))>;
737 def : Pat<(setugt GPR:$rs1, GPR:$rs2), (SLTU GPR:$rs2, GPR:$rs1)>;
738 def : Pat<(setuge GPR:$rs1, GPR:$rs2), (XORI (SLTU GPR:$rs1, GPR:$rs2), 1)>;
739 def : Pat<(setule GPR:$rs1, GPR:$rs2), (XORI (SLTU GPR:$rs2, GPR:$rs1), 1)>;
740 def : Pat<(setgt GPR:$rs1, GPR:$rs2), (SLT GPR:$rs2, GPR:$rs1)>;
741 def : Pat<(setge GPR:$rs1, GPR:$rs2), (XORI (SLT GPR:$rs1, GPR:$rs2), 1)>;
742 def : Pat<(setle GPR:$rs1, GPR:$rs2), (XORI (SLT GPR:$rs2, GPR:$rs1), 1)>;
744 let usesCustomInserter = 1 in
745 class SelectCC_rrirr<RegisterClass valty, RegisterClass cmpty>
746 : Pseudo<(outs valty:$dst),
747 (ins cmpty:$lhs, cmpty:$rhs, ixlenimm:$imm,
748 valty:$truev, valty:$falsev),
749 [(set valty:$dst, (SelectCC cmpty:$lhs, cmpty:$rhs,
750 (XLenVT imm:$imm), valty:$truev, valty:$falsev))]>;
752 def Select_GPR_Using_CC_GPR : SelectCC_rrirr<GPR, GPR>;
754 /// Branches and jumps
756 // Match `(brcond (CondOp ..), ..)` and lower to the appropriate RISC-V branch
758 class BccPat<PatFrag CondOp, RVInstB Inst>
759 : Pat<(brcond (XLenVT (CondOp GPR:$rs1, GPR:$rs2)), bb:$imm12),
760 (Inst GPR:$rs1, GPR:$rs2, simm13_lsb0:$imm12)>;
762 def : BccPat<seteq, BEQ>;
763 def : BccPat<setne, BNE>;
764 def : BccPat<setlt, BLT>;
765 def : BccPat<setge, BGE>;
766 def : BccPat<setult, BLTU>;
767 def : BccPat<setuge, BGEU>;
769 class BccSwapPat<PatFrag CondOp, RVInst InstBcc>
770 : Pat<(brcond (XLenVT (CondOp GPR:$rs1, GPR:$rs2)), bb:$imm12),
771 (InstBcc GPR:$rs2, GPR:$rs1, bb:$imm12)>;
773 // Condition codes that don't have matching RISC-V branch instructions, but
774 // are trivially supported by swapping the two input operands
775 def : BccSwapPat<setgt, BLT>;
776 def : BccSwapPat<setle, BGE>;
777 def : BccSwapPat<setugt, BLTU>;
778 def : BccSwapPat<setule, BGEU>;
780 // An extra pattern is needed for a brcond without a setcc (i.e. where the
781 // condition was calculated elsewhere).
782 def : Pat<(brcond GPR:$cond, bb:$imm12), (BNE GPR:$cond, X0, bb:$imm12)>;
784 let isBarrier = 1, isBranch = 1, isTerminator = 1 in
785 def PseudoBR : Pseudo<(outs), (ins simm21_lsb0_jal:$imm20), [(br bb:$imm20)]>,
786 PseudoInstExpansion<(JAL X0, simm21_lsb0_jal:$imm20)>;
788 let isCall = 1, Defs=[X1] in
789 let isBarrier = 1, isBranch = 1, isIndirectBranch = 1, isTerminator = 1 in
790 def PseudoBRIND : Pseudo<(outs), (ins GPR:$rs1, simm12:$imm12), []>,
791 PseudoInstExpansion<(JALR X0, GPR:$rs1, simm12:$imm12)>;
793 def : Pat<(brind GPR:$rs1), (PseudoBRIND GPR:$rs1, 0)>;
794 def : Pat<(brind (add GPR:$rs1, simm12:$imm12)),
795 (PseudoBRIND GPR:$rs1, simm12:$imm12)>;
797 // PseudoCALL is a pseudo instruction which will eventually expand to auipc
798 // and jalr while encoding. This is desirable, as an auipc+jalr pair with
799 // R_RISCV_CALL and R_RISCV_RELAX relocations can be be relaxed by the linker
800 // if the offset fits in a signed 21-bit immediate.
801 // Define AsmString to print "call" when compile with -S flag.
802 // Define isCodeGenOnly = 0 to support parsing assembly "call" instruction.
803 let isCall = 1, Defs = [X1], isCodeGenOnly = 0 in
804 def PseudoCALL : Pseudo<(outs), (ins bare_symbol:$func),
805 [(Call tglobaladdr:$func)]> {
806 let AsmString = "call\t$func";
809 def : Pat<(Call texternalsym:$func), (PseudoCALL texternalsym:$func)>;
811 def : Pat<(URetFlag), (URET X0, X0)>;
812 def : Pat<(SRetFlag), (SRET X0, X0)>;
813 def : Pat<(MRetFlag), (MRET X0, X0)>;
815 let isCall = 1, Defs = [X1] in
816 def PseudoCALLIndirect : Pseudo<(outs), (ins GPR:$rs1), [(Call GPR:$rs1)]>,
817 PseudoInstExpansion<(JALR X1, GPR:$rs1, 0)>;
819 let isBarrier = 1, isReturn = 1, isTerminator = 1 in
820 def PseudoRET : Pseudo<(outs), (ins), [(RetFlag)]>,
821 PseudoInstExpansion<(JALR X0, X1, 0)>;
823 // PseudoTAIL is a pseudo instruction similar to PseudoCALL and will eventually
824 // expand to auipc and jalr while encoding.
825 // Define AsmString to print "tail" when compile with -S flag.
826 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [X2],
828 def PseudoTAIL : Pseudo<(outs), (ins bare_symbol:$dst), []> {
829 let AsmString = "tail\t$dst";
832 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [X2] in
833 def PseudoTAILIndirect : Pseudo<(outs), (ins GPRTC:$rs1), [(Tail GPRTC:$rs1)]>,
834 PseudoInstExpansion<(JALR X0, GPR:$rs1, 0)>;
836 def : Pat<(Tail (iPTR tglobaladdr:$dst)),
837 (PseudoTAIL texternalsym:$dst)>;
838 def : Pat<(Tail (iPTR texternalsym:$dst)),
839 (PseudoTAIL texternalsym:$dst)>;
841 let hasSideEffects = 0, mayLoad = 0, mayStore = 0, isCodeGenOnly = 0,
842 isAsmParserOnly = 1 in
843 def PseudoLLA : Pseudo<(outs GPR:$dst), (ins bare_symbol:$src), [],
844 "lla", "$dst, $src">;
848 multiclass LdPat<PatFrag LoadOp, RVInst Inst> {
849 def : Pat<(LoadOp GPR:$rs1), (Inst GPR:$rs1, 0)>;
850 def : Pat<(LoadOp AddrFI:$rs1), (Inst AddrFI:$rs1, 0)>;
851 def : Pat<(LoadOp (add GPR:$rs1, simm12:$imm12)),
852 (Inst GPR:$rs1, simm12:$imm12)>;
853 def : Pat<(LoadOp (add AddrFI:$rs1, simm12:$imm12)),
854 (Inst AddrFI:$rs1, simm12:$imm12)>;
855 def : Pat<(LoadOp (IsOrAdd AddrFI:$rs1, simm12:$imm12)),
856 (Inst AddrFI:$rs1, simm12:$imm12)>;
859 defm : LdPat<sextloadi8, LB>;
860 defm : LdPat<extloadi8, LB>;
861 defm : LdPat<sextloadi16, LH>;
862 defm : LdPat<extloadi16, LH>;
863 defm : LdPat<load, LW>, Requires<[IsRV32]>;
864 defm : LdPat<zextloadi8, LBU>;
865 defm : LdPat<zextloadi16, LHU>;
869 multiclass StPat<PatFrag StoreOp, RVInst Inst, RegisterClass StTy> {
870 def : Pat<(StoreOp StTy:$rs2, GPR:$rs1), (Inst StTy:$rs2, GPR:$rs1, 0)>;
871 def : Pat<(StoreOp StTy:$rs2, AddrFI:$rs1), (Inst StTy:$rs2, AddrFI:$rs1, 0)>;
872 def : Pat<(StoreOp StTy:$rs2, (add GPR:$rs1, simm12:$imm12)),
873 (Inst StTy:$rs2, GPR:$rs1, simm12:$imm12)>;
874 def : Pat<(StoreOp StTy:$rs2, (add AddrFI:$rs1, simm12:$imm12)),
875 (Inst StTy:$rs2, AddrFI:$rs1, simm12:$imm12)>;
876 def : Pat<(StoreOp StTy:$rs2, (IsOrAdd AddrFI:$rs1, simm12:$imm12)),
877 (Inst StTy:$rs2, AddrFI:$rs1, simm12:$imm12)>;
880 defm : StPat<truncstorei8, SB, GPR>;
881 defm : StPat<truncstorei16, SH, GPR>;
882 defm : StPat<store, SW, GPR>, Requires<[IsRV32]>;
886 // Refer to Table A.6 in the version 2.3 draft of the RISC-V Instruction Set
889 // fence acquire -> fence r, rw
890 def : Pat<(atomic_fence (XLenVT 4), (imm)), (FENCE 0b10, 0b11)>;
891 // fence release -> fence rw, w
892 def : Pat<(atomic_fence (XLenVT 5), (imm)), (FENCE 0b11, 0b1)>;
893 // fence acq_rel -> fence.tso
894 def : Pat<(atomic_fence (XLenVT 6), (imm)), (FENCE_TSO)>;
895 // fence seq_cst -> fence rw, rw
896 def : Pat<(atomic_fence (XLenVT 7), (imm)), (FENCE 0b11, 0b11)>;
898 // Lowering for atomic load and store is defined in RISCVInstrInfoA.td.
899 // Although these are lowered to fence+load/store instructions defined in the
900 // base RV32I/RV64I ISA, this lowering is only used when the A extension is
901 // present. This is necessary as it isn't valid to mix __atomic_* libcalls
902 // with inline atomic operations for the same object.
904 /// Other pseudo-instructions
906 // Pessimistically assume the stack pointer will be clobbered
907 let Defs = [X2], Uses = [X2] in {
908 def ADJCALLSTACKDOWN : Pseudo<(outs), (ins i32imm:$amt1, i32imm:$amt2),
909 [(CallSeqStart timm:$amt1, timm:$amt2)]>;
910 def ADJCALLSTACKUP : Pseudo<(outs), (ins i32imm:$amt1, i32imm:$amt2),
911 [(CallSeqEnd timm:$amt1, timm:$amt2)]>;
912 } // Defs = [X2], Uses = [X2]
916 let Predicates = [IsRV64] in {
920 def : Pat<(sext_inreg GPR:$rs1, i32), (ADDIW GPR:$rs1, 0)>;
921 def : Pat<(and GPR:$rs1, 0xffffffff), (SRLI (SLLI GPR:$rs1, 32), 32)>;
925 def : Pat<(sext_inreg (add GPR:$rs1, GPR:$rs2), i32),
926 (ADDW GPR:$rs1, GPR:$rs2)>;
927 def : Pat<(sext_inreg (add GPR:$rs1, simm12:$imm12), i32),
928 (ADDIW GPR:$rs1, simm12:$imm12)>;
929 def : Pat<(sext_inreg (sub GPR:$rs1, GPR:$rs2), i32),
930 (SUBW GPR:$rs1, GPR:$rs2)>;
931 def : Pat<(sext_inreg (shl GPR:$rs1, uimm5:$shamt), i32),
932 (SLLIW GPR:$rs1, uimm5:$shamt)>;
933 // (srl (zexti32 ...), uimm5:$shamt) is matched with custom code due to the
934 // need to undo manipulation of the mask value performed by DAGCombine.
935 def : Pat<(sra (sext_inreg GPR:$rs1, i32), uimm5:$shamt),
936 (SRAIW GPR:$rs1, uimm5:$shamt)>;
938 // For variable-length shifts, we rely on assertzexti5 being inserted during
939 // lowering (see RISCVTargetLowering::PerformDAGCombine). This enables us to
940 // guarantee that selecting a 32-bit variable shift is legal (as the variable
941 // shift is known to be <= 32). We must also be careful not to create
942 // semantically incorrect patterns. For instance, selecting SRLW for
943 // (srl (zexti32 GPR:$rs1), (shiftwamt GPR:$rs2)),
944 // is not guaranteed to be safe, as we don't know whether the upper 32-bits of
945 // the result are used or not (in the case where rs2=0, this is a
946 // sign-extension operation).
948 def : Pat<(sext_inreg (shl GPR:$rs1, (shiftwamt GPR:$rs2)), i32),
949 (SLLW GPR:$rs1, GPR:$rs2)>;
950 def : Pat<(zexti32 (shl GPR:$rs1, (shiftwamt GPR:$rs2))),
951 (SRLI (SLLI (SLLW GPR:$rs1, GPR:$rs2), 32), 32)>;
953 def : Pat<(sext_inreg (srl (zexti32 GPR:$rs1), (shiftwamt GPR:$rs2)), i32),
954 (SRLW GPR:$rs1, GPR:$rs2)>;
955 def : Pat<(zexti32 (srl (zexti32 GPR:$rs1), (shiftwamt GPR:$rs2))),
956 (SRLI (SLLI (SRLW GPR:$rs1, GPR:$rs2), 32), 32)>;
958 def : Pat<(sra (sexti32 GPR:$rs1), (shiftwamt GPR:$rs2)),
959 (SRAW GPR:$rs1, GPR:$rs2)>;
963 defm : LdPat<sextloadi32, LW>;
964 defm : LdPat<extloadi32, LW>;
965 defm : LdPat<zextloadi32, LWU>;
966 defm : LdPat<load, LD>;
970 defm : StPat<truncstorei32, SW, GPR>;
971 defm : StPat<store, SD, GPR>;
972 } // Predicates = [IsRV64]
974 //===----------------------------------------------------------------------===//
975 // Standard extensions
976 //===----------------------------------------------------------------------===//
978 include "RISCVInstrInfoM.td"
979 include "RISCVInstrInfoA.td"
980 include "RISCVInstrInfoF.td"
981 include "RISCVInstrInfoD.td"
982 include "RISCVInstrInfoC.td"