1 //===-- RISCVInstrInfoA.td - RISC-V 'A' instructions -------*- tablegen -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file describes the RISC-V instructions from the standard 'A', Atomic
10 // Instructions extension.
12 //===----------------------------------------------------------------------===//
14 //===----------------------------------------------------------------------===//
15 // Operand and SDNode transformation definitions.
16 //===----------------------------------------------------------------------===//
18 // A parse method for (${gpr}) or 0(${gpr}), where the 0 is be silently ignored.
19 // Used for GNU as Compatibility.
20 def AtomicMemOpOperand : AsmOperandClass {
21 let Name = "AtomicMemOpOperand";
22 let RenderMethod = "addRegOperands";
23 let PredicateMethod = "isGPR";
24 let ParserMethod = "parseAtomicMemOp";
27 def GPRMemAtomic : RegisterOperand<GPR> {
28 let ParserMatchClass = AtomicMemOpOperand;
29 let PrintMethod = "printAtomicMemOp";
32 //===----------------------------------------------------------------------===//
33 // Instruction class templates
34 //===----------------------------------------------------------------------===//
36 let hasSideEffects = 0, mayLoad = 1, mayStore = 0 in
37 class LR_r<bit aq, bit rl, bits<3> funct3, string opcodestr>
38 : RVInstRAtomic<0b00010, aq, rl, funct3, OPC_AMO,
39 (outs GPR:$rd), (ins GPRMemAtomic:$rs1),
40 opcodestr, "$rd, $rs1"> {
44 multiclass LR_r_aq_rl<bits<3> funct3, string opcodestr> {
45 def "" : LR_r<0, 0, funct3, opcodestr>;
46 def _AQ : LR_r<1, 0, funct3, opcodestr # ".aq">;
47 def _RL : LR_r<0, 1, funct3, opcodestr # ".rl">;
48 def _AQ_RL : LR_r<1, 1, funct3, opcodestr # ".aqrl">;
51 let hasSideEffects = 0, mayLoad = 1, mayStore = 1 in
52 class AMO_rr<bits<5> funct5, bit aq, bit rl, bits<3> funct3, string opcodestr>
53 : RVInstRAtomic<funct5, aq, rl, funct3, OPC_AMO,
54 (outs GPR:$rd), (ins GPRMemAtomic:$rs1, GPR:$rs2),
55 opcodestr, "$rd, $rs2, $rs1">;
57 multiclass AMO_rr_aq_rl<bits<5> funct5, bits<3> funct3, string opcodestr> {
58 def "" : AMO_rr<funct5, 0, 0, funct3, opcodestr>;
59 def _AQ : AMO_rr<funct5, 1, 0, funct3, opcodestr # ".aq">;
60 def _RL : AMO_rr<funct5, 0, 1, funct3, opcodestr # ".rl">;
61 def _AQ_RL : AMO_rr<funct5, 1, 1, funct3, opcodestr # ".aqrl">;
64 multiclass AtomicStPat<PatFrag StoreOp, RVInst Inst, RegisterClass StTy> {
65 def : Pat<(StoreOp GPR:$rs1, StTy:$rs2), (Inst StTy:$rs2, GPR:$rs1, 0)>;
66 def : Pat<(StoreOp AddrFI:$rs1, StTy:$rs2), (Inst StTy:$rs2, AddrFI:$rs1, 0)>;
67 def : Pat<(StoreOp (add GPR:$rs1, simm12:$imm12), StTy:$rs2),
68 (Inst StTy:$rs2, GPR:$rs1, simm12:$imm12)>;
69 def : Pat<(StoreOp (add AddrFI:$rs1, simm12:$imm12), StTy:$rs2),
70 (Inst StTy:$rs2, AddrFI:$rs1, simm12:$imm12)>;
71 def : Pat<(StoreOp (IsOrAdd AddrFI:$rs1, simm12:$imm12), StTy:$rs2),
72 (Inst StTy:$rs2, AddrFI:$rs1, simm12:$imm12)>;
75 //===----------------------------------------------------------------------===//
77 //===----------------------------------------------------------------------===//
79 let Predicates = [HasStdExtA] in {
80 defm LR_W : LR_r_aq_rl<0b010, "lr.w">, Sched<[WriteAtomicLDW, ReadAtomicLDW]>;
81 defm SC_W : AMO_rr_aq_rl<0b00011, 0b010, "sc.w">,
82 Sched<[WriteAtomicSTW, ReadAtomicSTW, ReadAtomicSTW]>;
83 defm AMOSWAP_W : AMO_rr_aq_rl<0b00001, 0b010, "amoswap.w">,
84 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
85 defm AMOADD_W : AMO_rr_aq_rl<0b00000, 0b010, "amoadd.w">,
86 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
87 defm AMOXOR_W : AMO_rr_aq_rl<0b00100, 0b010, "amoxor.w">,
88 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
89 defm AMOAND_W : AMO_rr_aq_rl<0b01100, 0b010, "amoand.w">,
90 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
91 defm AMOOR_W : AMO_rr_aq_rl<0b01000, 0b010, "amoor.w">,
92 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
93 defm AMOMIN_W : AMO_rr_aq_rl<0b10000, 0b010, "amomin.w">,
94 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
95 defm AMOMAX_W : AMO_rr_aq_rl<0b10100, 0b010, "amomax.w">,
96 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
97 defm AMOMINU_W : AMO_rr_aq_rl<0b11000, 0b010, "amominu.w">,
98 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
99 defm AMOMAXU_W : AMO_rr_aq_rl<0b11100, 0b010, "amomaxu.w">,
100 Sched<[WriteAtomicW, ReadAtomicWA, ReadAtomicWD]>;
101 } // Predicates = [HasStdExtA]
103 let Predicates = [HasStdExtA, IsRV64] in {
104 defm LR_D : LR_r_aq_rl<0b011, "lr.d">, Sched<[WriteAtomicLDD, ReadAtomicLDD]>;
105 defm SC_D : AMO_rr_aq_rl<0b00011, 0b011, "sc.d">,
106 Sched<[WriteAtomicSTD, ReadAtomicSTD, ReadAtomicSTD]>;
107 defm AMOSWAP_D : AMO_rr_aq_rl<0b00001, 0b011, "amoswap.d">,
108 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
109 defm AMOADD_D : AMO_rr_aq_rl<0b00000, 0b011, "amoadd.d">,
110 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
111 defm AMOXOR_D : AMO_rr_aq_rl<0b00100, 0b011, "amoxor.d">,
112 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
113 defm AMOAND_D : AMO_rr_aq_rl<0b01100, 0b011, "amoand.d">,
114 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
115 defm AMOOR_D : AMO_rr_aq_rl<0b01000, 0b011, "amoor.d">,
116 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
117 defm AMOMIN_D : AMO_rr_aq_rl<0b10000, 0b011, "amomin.d">,
118 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
119 defm AMOMAX_D : AMO_rr_aq_rl<0b10100, 0b011, "amomax.d">,
120 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
121 defm AMOMINU_D : AMO_rr_aq_rl<0b11000, 0b011, "amominu.d">,
122 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
123 defm AMOMAXU_D : AMO_rr_aq_rl<0b11100, 0b011, "amomaxu.d">,
124 Sched<[WriteAtomicD, ReadAtomicDA, ReadAtomicDD]>;
125 } // Predicates = [HasStdExtA, IsRV64]
127 //===----------------------------------------------------------------------===//
128 // Pseudo-instructions and codegen patterns
129 //===----------------------------------------------------------------------===//
131 let Predicates = [HasStdExtA] in {
133 /// Atomic loads and stores
135 // Fences will be inserted for atomic load/stores according to the logic in
136 // RISCVTargetLowering::{emitLeadingFence,emitTrailingFence}.
138 defm : LdPat<atomic_load_8, LB>;
139 defm : LdPat<atomic_load_16, LH>;
140 defm : LdPat<atomic_load_32, LW>;
142 defm : AtomicStPat<atomic_store_8, SB, GPR>;
143 defm : AtomicStPat<atomic_store_16, SH, GPR>;
144 defm : AtomicStPat<atomic_store_32, SW, GPR>;
148 multiclass AMOPat<string AtomicOp, string BaseInst> {
149 def : PatGprGpr<!cast<PatFrag>(AtomicOp#"_monotonic"),
150 !cast<RVInst>(BaseInst)>;
151 def : PatGprGpr<!cast<PatFrag>(AtomicOp#"_acquire"),
152 !cast<RVInst>(BaseInst#"_AQ")>;
153 def : PatGprGpr<!cast<PatFrag>(AtomicOp#"_release"),
154 !cast<RVInst>(BaseInst#"_RL")>;
155 def : PatGprGpr<!cast<PatFrag>(AtomicOp#"_acq_rel"),
156 !cast<RVInst>(BaseInst#"_AQ_RL")>;
157 def : PatGprGpr<!cast<PatFrag>(AtomicOp#"_seq_cst"),
158 !cast<RVInst>(BaseInst#"_AQ_RL")>;
161 defm : AMOPat<"atomic_swap_32", "AMOSWAP_W">;
162 defm : AMOPat<"atomic_load_add_32", "AMOADD_W">;
163 defm : AMOPat<"atomic_load_and_32", "AMOAND_W">;
164 defm : AMOPat<"atomic_load_or_32", "AMOOR_W">;
165 defm : AMOPat<"atomic_load_xor_32", "AMOXOR_W">;
166 defm : AMOPat<"atomic_load_max_32", "AMOMAX_W">;
167 defm : AMOPat<"atomic_load_min_32", "AMOMIN_W">;
168 defm : AMOPat<"atomic_load_umax_32", "AMOMAXU_W">;
169 defm : AMOPat<"atomic_load_umin_32", "AMOMINU_W">;
171 def : Pat<(atomic_load_sub_32_monotonic GPR:$addr, GPR:$incr),
172 (AMOADD_W GPR:$addr, (SUB X0, GPR:$incr))>;
173 def : Pat<(atomic_load_sub_32_acquire GPR:$addr, GPR:$incr),
174 (AMOADD_W_AQ GPR:$addr, (SUB X0, GPR:$incr))>;
175 def : Pat<(atomic_load_sub_32_release GPR:$addr, GPR:$incr),
176 (AMOADD_W_RL GPR:$addr, (SUB X0, GPR:$incr))>;
177 def : Pat<(atomic_load_sub_32_acq_rel GPR:$addr, GPR:$incr),
178 (AMOADD_W_AQ_RL GPR:$addr, (SUB X0, GPR:$incr))>;
179 def : Pat<(atomic_load_sub_32_seq_cst GPR:$addr, GPR:$incr),
180 (AMOADD_W_AQ_RL GPR:$addr, (SUB X0, GPR:$incr))>;
184 class PseudoAMO : Pseudo<(outs GPR:$res, GPR:$scratch),
185 (ins GPR:$addr, GPR:$incr, ixlenimm:$ordering), []> {
186 let Constraints = "@earlyclobber $res,@earlyclobber $scratch";
189 let hasSideEffects = 0;
192 def PseudoAtomicLoadNand32 : PseudoAMO;
193 // Ordering constants must be kept in sync with the AtomicOrdering enum in
195 def : Pat<(atomic_load_nand_32_monotonic GPR:$addr, GPR:$incr),
196 (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 2)>;
197 def : Pat<(atomic_load_nand_32_acquire GPR:$addr, GPR:$incr),
198 (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 4)>;
199 def : Pat<(atomic_load_nand_32_release GPR:$addr, GPR:$incr),
200 (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 5)>;
201 def : Pat<(atomic_load_nand_32_acq_rel GPR:$addr, GPR:$incr),
202 (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 6)>;
203 def : Pat<(atomic_load_nand_32_seq_cst GPR:$addr, GPR:$incr),
204 (PseudoAtomicLoadNand32 GPR:$addr, GPR:$incr, 7)>;
206 class PseudoMaskedAMO
207 : Pseudo<(outs GPR:$res, GPR:$scratch),
208 (ins GPR:$addr, GPR:$incr, GPR:$mask, ixlenimm:$ordering), []> {
209 let Constraints = "@earlyclobber $res,@earlyclobber $scratch";
212 let hasSideEffects = 0;
215 class PseudoMaskedAMOMinMax
216 : Pseudo<(outs GPR:$res, GPR:$scratch1, GPR:$scratch2),
217 (ins GPR:$addr, GPR:$incr, GPR:$mask, ixlenimm:$sextshamt,
218 ixlenimm:$ordering), []> {
219 let Constraints = "@earlyclobber $res,@earlyclobber $scratch1,"
220 "@earlyclobber $scratch2";
223 let hasSideEffects = 0;
226 class PseudoMaskedAMOUMinUMax
227 : Pseudo<(outs GPR:$res, GPR:$scratch1, GPR:$scratch2),
228 (ins GPR:$addr, GPR:$incr, GPR:$mask, ixlenimm:$ordering), []> {
229 let Constraints = "@earlyclobber $res,@earlyclobber $scratch1,"
230 "@earlyclobber $scratch2";
233 let hasSideEffects = 0;
236 class PseudoMaskedAMOPat<Intrinsic intrin, Pseudo AMOInst>
237 : Pat<(intrin GPR:$addr, GPR:$incr, GPR:$mask, timm:$ordering),
238 (AMOInst GPR:$addr, GPR:$incr, GPR:$mask, imm:$ordering)>;
240 class PseudoMaskedAMOMinMaxPat<Intrinsic intrin, Pseudo AMOInst>
241 : Pat<(intrin GPR:$addr, GPR:$incr, GPR:$mask, GPR:$shiftamt,
243 (AMOInst GPR:$addr, GPR:$incr, GPR:$mask, GPR:$shiftamt,
246 def PseudoMaskedAtomicSwap32 : PseudoMaskedAMO;
247 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_xchg_i32,
248 PseudoMaskedAtomicSwap32>;
249 def PseudoMaskedAtomicLoadAdd32 : PseudoMaskedAMO;
250 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_add_i32,
251 PseudoMaskedAtomicLoadAdd32>;
252 def PseudoMaskedAtomicLoadSub32 : PseudoMaskedAMO;
253 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_sub_i32,
254 PseudoMaskedAtomicLoadSub32>;
255 def PseudoMaskedAtomicLoadNand32 : PseudoMaskedAMO;
256 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_nand_i32,
257 PseudoMaskedAtomicLoadNand32>;
258 def PseudoMaskedAtomicLoadMax32 : PseudoMaskedAMOMinMax;
259 def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_max_i32,
260 PseudoMaskedAtomicLoadMax32>;
261 def PseudoMaskedAtomicLoadMin32 : PseudoMaskedAMOMinMax;
262 def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_min_i32,
263 PseudoMaskedAtomicLoadMin32>;
264 def PseudoMaskedAtomicLoadUMax32 : PseudoMaskedAMOUMinUMax;
265 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umax_i32,
266 PseudoMaskedAtomicLoadUMax32>;
267 def PseudoMaskedAtomicLoadUMin32 : PseudoMaskedAMOUMinUMax;
268 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umin_i32,
269 PseudoMaskedAtomicLoadUMin32>;
271 /// Compare and exchange
274 : Pseudo<(outs GPR:$res, GPR:$scratch),
275 (ins GPR:$addr, GPR:$cmpval, GPR:$newval, ixlenimm:$ordering), []> {
276 let Constraints = "@earlyclobber $res,@earlyclobber $scratch";
279 let hasSideEffects = 0;
282 // Ordering constants must be kept in sync with the AtomicOrdering enum in
284 multiclass PseudoCmpXchgPat<string Op, Pseudo CmpXchgInst> {
285 def : Pat<(!cast<PatFrag>(Op#"_monotonic") GPR:$addr, GPR:$cmp, GPR:$new),
286 (CmpXchgInst GPR:$addr, GPR:$cmp, GPR:$new, 2)>;
287 def : Pat<(!cast<PatFrag>(Op#"_acquire") GPR:$addr, GPR:$cmp, GPR:$new),
288 (CmpXchgInst GPR:$addr, GPR:$cmp, GPR:$new, 4)>;
289 def : Pat<(!cast<PatFrag>(Op#"_release") GPR:$addr, GPR:$cmp, GPR:$new),
290 (CmpXchgInst GPR:$addr, GPR:$cmp, GPR:$new, 5)>;
291 def : Pat<(!cast<PatFrag>(Op#"_acq_rel") GPR:$addr, GPR:$cmp, GPR:$new),
292 (CmpXchgInst GPR:$addr, GPR:$cmp, GPR:$new, 6)>;
293 def : Pat<(!cast<PatFrag>(Op#"_seq_cst") GPR:$addr, GPR:$cmp, GPR:$new),
294 (CmpXchgInst GPR:$addr, GPR:$cmp, GPR:$new, 7)>;
297 def PseudoCmpXchg32 : PseudoCmpXchg;
298 defm : PseudoCmpXchgPat<"atomic_cmp_swap_32", PseudoCmpXchg32>;
300 def PseudoMaskedCmpXchg32
301 : Pseudo<(outs GPR:$res, GPR:$scratch),
302 (ins GPR:$addr, GPR:$cmpval, GPR:$newval, GPR:$mask,
303 ixlenimm:$ordering), []> {
304 let Constraints = "@earlyclobber $res,@earlyclobber $scratch";
307 let hasSideEffects = 0;
310 def : Pat<(int_riscv_masked_cmpxchg_i32
311 GPR:$addr, GPR:$cmpval, GPR:$newval, GPR:$mask, timm:$ordering),
312 (PseudoMaskedCmpXchg32
313 GPR:$addr, GPR:$cmpval, GPR:$newval, GPR:$mask, imm:$ordering)>;
315 } // Predicates = [HasStdExtA]
317 let Predicates = [HasStdExtA, IsRV64] in {
319 /// 64-bit atomic loads and stores
321 // Fences will be inserted for atomic load/stores according to the logic in
322 // RISCVTargetLowering::{emitLeadingFence,emitTrailingFence}.
323 defm : LdPat<atomic_load_64, LD>;
324 defm : AtomicStPat<atomic_store_64, SD, GPR>;
326 defm : AMOPat<"atomic_swap_64", "AMOSWAP_D">;
327 defm : AMOPat<"atomic_load_add_64", "AMOADD_D">;
328 defm : AMOPat<"atomic_load_and_64", "AMOAND_D">;
329 defm : AMOPat<"atomic_load_or_64", "AMOOR_D">;
330 defm : AMOPat<"atomic_load_xor_64", "AMOXOR_D">;
331 defm : AMOPat<"atomic_load_max_64", "AMOMAX_D">;
332 defm : AMOPat<"atomic_load_min_64", "AMOMIN_D">;
333 defm : AMOPat<"atomic_load_umax_64", "AMOMAXU_D">;
334 defm : AMOPat<"atomic_load_umin_64", "AMOMINU_D">;
338 def : Pat<(atomic_load_sub_64_monotonic GPR:$addr, GPR:$incr),
339 (AMOADD_D GPR:$addr, (SUB X0, GPR:$incr))>;
340 def : Pat<(atomic_load_sub_64_acquire GPR:$addr, GPR:$incr),
341 (AMOADD_D_AQ GPR:$addr, (SUB X0, GPR:$incr))>;
342 def : Pat<(atomic_load_sub_64_release GPR:$addr, GPR:$incr),
343 (AMOADD_D_RL GPR:$addr, (SUB X0, GPR:$incr))>;
344 def : Pat<(atomic_load_sub_64_acq_rel GPR:$addr, GPR:$incr),
345 (AMOADD_D_AQ_RL GPR:$addr, (SUB X0, GPR:$incr))>;
346 def : Pat<(atomic_load_sub_64_seq_cst GPR:$addr, GPR:$incr),
347 (AMOADD_D_AQ_RL GPR:$addr, (SUB X0, GPR:$incr))>;
349 /// 64-bit pseudo AMOs
351 def PseudoAtomicLoadNand64 : PseudoAMO;
352 // Ordering constants must be kept in sync with the AtomicOrdering enum in
354 def : Pat<(atomic_load_nand_64_monotonic GPR:$addr, GPR:$incr),
355 (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 2)>;
356 def : Pat<(atomic_load_nand_64_acquire GPR:$addr, GPR:$incr),
357 (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 4)>;
358 def : Pat<(atomic_load_nand_64_release GPR:$addr, GPR:$incr),
359 (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 5)>;
360 def : Pat<(atomic_load_nand_64_acq_rel GPR:$addr, GPR:$incr),
361 (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 6)>;
362 def : Pat<(atomic_load_nand_64_seq_cst GPR:$addr, GPR:$incr),
363 (PseudoAtomicLoadNand64 GPR:$addr, GPR:$incr, 7)>;
365 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_xchg_i64,
366 PseudoMaskedAtomicSwap32>;
367 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_add_i64,
368 PseudoMaskedAtomicLoadAdd32>;
369 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_sub_i64,
370 PseudoMaskedAtomicLoadSub32>;
371 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_nand_i64,
372 PseudoMaskedAtomicLoadNand32>;
373 def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_max_i64,
374 PseudoMaskedAtomicLoadMax32>;
375 def : PseudoMaskedAMOMinMaxPat<int_riscv_masked_atomicrmw_min_i64,
376 PseudoMaskedAtomicLoadMin32>;
377 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umax_i64,
378 PseudoMaskedAtomicLoadUMax32>;
379 def : PseudoMaskedAMOPat<int_riscv_masked_atomicrmw_umin_i64,
380 PseudoMaskedAtomicLoadUMin32>;
382 /// 64-bit compare and exchange
384 def PseudoCmpXchg64 : PseudoCmpXchg;
385 defm : PseudoCmpXchgPat<"atomic_cmp_swap_64", PseudoCmpXchg64>;
387 def : Pat<(int_riscv_masked_cmpxchg_i64
388 GPR:$addr, GPR:$cmpval, GPR:$newval, GPR:$mask, timm:$ordering),
389 (PseudoMaskedCmpXchg32
390 GPR:$addr, GPR:$cmpval, GPR:$newval, GPR:$mask, imm:$ordering)>;
391 } // Predicates = [HasStdExtA, IsRV64]