1 //===-- MipsCondMov.td - Describe Mips Conditional Moves --*- 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 is the Conditional Moves implementation.
11 //===----------------------------------------------------------------------===//
14 // These instructions are expanded in
15 // MipsISelLowering::EmitInstrWithCustomInserter if target does not have
16 // conditional move instructions.
18 class CMov_I_I_FT<string opstr, RegisterOperand CRC, RegisterOperand DRC,
19 InstrItinClass Itin> :
20 InstSE<(outs DRC:$rd), (ins DRC:$rs, CRC:$rt, DRC:$F),
21 !strconcat(opstr, "\t$rd, $rs, $rt"), [], Itin, FrmFR, opstr> {
22 let Constraints = "$F = $rd";
25 // cond:int, data:float
26 class CMov_I_F_FT<string opstr, RegisterOperand CRC, RegisterOperand DRC,
27 InstrItinClass Itin> :
28 InstSE<(outs DRC:$fd), (ins DRC:$fs, CRC:$rt, DRC:$F),
29 !strconcat(opstr, "\t$fd, $fs, $rt"), [], Itin, FrmFR, opstr>,
31 let Constraints = "$F = $fd";
34 // cond:float, data:int
35 class CMov_F_I_FT<string opstr, RegisterOperand RC, InstrItinClass Itin,
36 SDPatternOperator OpNode = null_frag> :
37 InstSE<(outs RC:$rd), (ins RC:$rs, FCCRegsOpnd:$fcc, RC:$F),
38 !strconcat(opstr, "\t$rd, $rs, $fcc"),
39 [(set RC:$rd, (OpNode RC:$rs, FCCRegsOpnd:$fcc, RC:$F))],
40 Itin, FrmFR, opstr>, HARDFLOAT {
41 let Constraints = "$F = $rd";
44 // cond:float, data:float
45 class CMov_F_F_FT<string opstr, RegisterOperand RC, InstrItinClass Itin,
46 SDPatternOperator OpNode = null_frag> :
47 InstSE<(outs RC:$fd), (ins RC:$fs, FCCRegsOpnd:$fcc, RC:$F),
48 !strconcat(opstr, "\t$fd, $fs, $fcc"),
49 [(set RC:$fd, (OpNode RC:$fs, FCCRegsOpnd:$fcc, RC:$F))],
50 Itin, FrmFR, opstr>, HARDFLOAT {
51 let Constraints = "$F = $fd";
55 multiclass MovzPats0<RegisterClass CRC, RegisterClass DRC,
56 Instruction MOVZInst, Instruction SLTOp,
57 Instruction SLTuOp, Instruction SLTiOp,
58 Instruction SLTiuOp> {
59 def : MipsPat<(select (i32 (setge CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
60 (MOVZInst DRC:$T, (SLTOp CRC:$lhs, CRC:$rhs), DRC:$F)>;
61 def : MipsPat<(select (i32 (setuge CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
62 (MOVZInst DRC:$T, (SLTuOp CRC:$lhs, CRC:$rhs), DRC:$F)>;
63 def : MipsPat<(select (i32 (setge CRC:$lhs, immSExt16:$rhs)), DRC:$T, DRC:$F),
64 (MOVZInst DRC:$T, (SLTiOp CRC:$lhs, immSExt16:$rhs), DRC:$F)>;
65 def : MipsPat<(select (i32 (setuge CRC:$lh, immSExt16:$rh)), DRC:$T, DRC:$F),
66 (MOVZInst DRC:$T, (SLTiuOp CRC:$lh, immSExt16:$rh), DRC:$F)>;
67 def : MipsPat<(select (i32 (setle CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
68 (MOVZInst DRC:$T, (SLTOp CRC:$rhs, CRC:$lhs), DRC:$F)>;
69 def : MipsPat<(select (i32 (setule CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
70 (MOVZInst DRC:$T, (SLTuOp CRC:$rhs, CRC:$lhs), DRC:$F)>;
71 def : MipsPat<(select (i32 (setgt CRC:$lhs, immSExt16Plus1:$rhs)),
73 (MOVZInst DRC:$T, (SLTiOp CRC:$lhs, (Plus1 imm:$rhs)), DRC:$F)>;
74 def : MipsPat<(select (i32 (setugt CRC:$lhs, immSExt16Plus1:$rhs)),
76 (MOVZInst DRC:$T, (SLTiuOp CRC:$lhs, (Plus1 imm:$rhs)),
80 multiclass MovzPats1<RegisterClass CRC, RegisterClass DRC,
81 Instruction MOVZInst, Instruction XOROp> {
82 def : MipsPat<(select (i32 (seteq CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
83 (MOVZInst DRC:$T, (XOROp CRC:$lhs, CRC:$rhs), DRC:$F)>;
84 def : MipsPat<(select (i32 (seteq CRC:$lhs, 0)), DRC:$T, DRC:$F),
85 (MOVZInst DRC:$T, CRC:$lhs, DRC:$F)>;
88 multiclass MovzPats2<RegisterClass CRC, RegisterClass DRC,
89 Instruction MOVZInst, Instruction XORiOp> {
91 (select (i32 (seteq CRC:$lhs, immZExt16:$uimm16)), DRC:$T, DRC:$F),
92 (MOVZInst DRC:$T, (XORiOp CRC:$lhs, immZExt16:$uimm16), DRC:$F)>;
95 multiclass MovnPats<RegisterClass CRC, RegisterClass DRC, Instruction MOVNInst,
97 def : MipsPat<(select (i32 (setne CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
98 (MOVNInst DRC:$T, (XOROp CRC:$lhs, CRC:$rhs), DRC:$F)>;
99 def : MipsPat<(select CRC:$cond, DRC:$T, DRC:$F),
100 (MOVNInst DRC:$T, CRC:$cond, DRC:$F)>;
101 def : MipsPat<(select (i32 (setne CRC:$lhs, 0)),DRC:$T, DRC:$F),
102 (MOVNInst DRC:$T, CRC:$lhs, DRC:$F)>;
105 // Instantiation of instructions.
106 let AdditionalPredicates = [NotInMicroMips] in {
107 def MOVZ_I_I : MMRel, CMov_I_I_FT<"movz", GPR32Opnd, GPR32Opnd, II_MOVZ>,
108 ADD_FM<0, 0xa>, INSN_MIPS4_32_NOT_32R6_64R6;
110 let isCodeGenOnly = 1 in {
111 def MOVZ_I_I64 : CMov_I_I_FT<"movz", GPR32Opnd, GPR64Opnd, II_MOVZ>,
112 ADD_FM<0, 0xa>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
113 def MOVZ_I64_I : CMov_I_I_FT<"movz", GPR64Opnd, GPR32Opnd, II_MOVZ>,
114 ADD_FM<0, 0xa>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
115 def MOVZ_I64_I64 : CMov_I_I_FT<"movz", GPR64Opnd, GPR64Opnd, II_MOVZ>,
116 ADD_FM<0, 0xa>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
119 def MOVN_I_I : MMRel, CMov_I_I_FT<"movn", GPR32Opnd, GPR32Opnd, II_MOVN>,
120 ADD_FM<0, 0xb>, INSN_MIPS4_32_NOT_32R6_64R6;
122 let isCodeGenOnly = 1 in {
123 def MOVN_I_I64 : CMov_I_I_FT<"movn", GPR32Opnd, GPR64Opnd, II_MOVN>,
124 ADD_FM<0, 0xb>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
125 def MOVN_I64_I : CMov_I_I_FT<"movn", GPR64Opnd, GPR32Opnd, II_MOVN>,
126 ADD_FM<0, 0xb>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
127 def MOVN_I64_I64 : CMov_I_I_FT<"movn", GPR64Opnd, GPR64Opnd, II_MOVN>,
128 ADD_FM<0, 0xb>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
130 def MOVZ_I_S : MMRel, CMov_I_F_FT<"movz.s", GPR32Opnd, FGR32Opnd, II_MOVZ_S>,
131 CMov_I_F_FM<18, 16>, INSN_MIPS4_32_NOT_32R6_64R6;
133 let isCodeGenOnly = 1 in
134 def MOVZ_I64_S : CMov_I_F_FT<"movz.s", GPR64Opnd, FGR32Opnd, II_MOVZ_S>,
135 CMov_I_F_FM<18, 16>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
137 def MOVN_I_S : MMRel, CMov_I_F_FT<"movn.s", GPR32Opnd, FGR32Opnd, II_MOVN_S>,
138 CMov_I_F_FM<19, 16>, INSN_MIPS4_32_NOT_32R6_64R6;
140 let isCodeGenOnly = 1 in
141 def MOVN_I64_S : CMov_I_F_FT<"movn.s", GPR64Opnd, FGR32Opnd, II_MOVN_S>,
142 CMov_I_F_FM<19, 16>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
144 def MOVZ_I_D32 : MMRel, CMov_I_F_FT<"movz.d", GPR32Opnd, AFGR64Opnd,
145 II_MOVZ_D>, CMov_I_F_FM<18, 17>,
146 INSN_MIPS4_32_NOT_32R6_64R6, FGR_32;
147 def MOVN_I_D32 : MMRel, CMov_I_F_FT<"movn.d", GPR32Opnd, AFGR64Opnd,
148 II_MOVN_D>, CMov_I_F_FM<19, 17>,
149 INSN_MIPS4_32_NOT_32R6_64R6, FGR_32;
151 let DecoderNamespace = "MipsFP64" in {
152 def MOVZ_I_D64 : CMov_I_F_FT<"movz.d", GPR32Opnd, FGR64Opnd, II_MOVZ_D>,
153 CMov_I_F_FM<18, 17>, INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
154 def MOVN_I_D64 : CMov_I_F_FT<"movn.d", GPR32Opnd, FGR64Opnd, II_MOVN_D>,
155 CMov_I_F_FM<19, 17>, INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
156 let isCodeGenOnly = 1 in {
157 def MOVZ_I64_D64 : CMov_I_F_FT<"movz.d", GPR64Opnd, FGR64Opnd, II_MOVZ_D>,
159 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64, FGR_64;
160 def MOVN_I64_D64 : CMov_I_F_FT<"movn.d", GPR64Opnd, FGR64Opnd, II_MOVN_D>,
162 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64, FGR_64;
166 def MOVT_I : MMRel, CMov_F_I_FT<"movt", GPR32Opnd, II_MOVT, MipsCMovFP_T>,
167 CMov_F_I_FM<1>, INSN_MIPS4_32_NOT_32R6_64R6;
169 let isCodeGenOnly = 1 in
170 def MOVT_I64 : CMov_F_I_FT<"movt", GPR64Opnd, II_MOVT, MipsCMovFP_T>,
171 CMov_F_I_FM<1>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
173 def MOVF_I : MMRel, CMov_F_I_FT<"movf", GPR32Opnd, II_MOVF, MipsCMovFP_F>,
174 CMov_F_I_FM<0>, INSN_MIPS4_32_NOT_32R6_64R6;
176 let isCodeGenOnly = 1 in
177 def MOVF_I64 : CMov_F_I_FT<"movf", GPR64Opnd, II_MOVF, MipsCMovFP_F>,
178 CMov_F_I_FM<0>, INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
179 def MOVT_S : MMRel, CMov_F_F_FT<"movt.s", FGR32Opnd, II_MOVT_S, MipsCMovFP_T>,
180 CMov_F_F_FM<16, 1>, INSN_MIPS4_32_NOT_32R6_64R6;
181 def MOVF_S : MMRel, CMov_F_F_FT<"movf.s", FGR32Opnd, II_MOVF_S, MipsCMovFP_F>,
182 CMov_F_F_FM<16, 0>, INSN_MIPS4_32_NOT_32R6_64R6;
184 def MOVT_D32 : MMRel, CMov_F_F_FT<"movt.d", AFGR64Opnd, II_MOVT_D,
185 MipsCMovFP_T>, CMov_F_F_FM<17, 1>,
186 INSN_MIPS4_32_NOT_32R6_64R6, FGR_32;
187 def MOVF_D32 : MMRel, CMov_F_F_FT<"movf.d", AFGR64Opnd, II_MOVF_D,
188 MipsCMovFP_F>, CMov_F_F_FM<17, 0>,
189 INSN_MIPS4_32_NOT_32R6_64R6, FGR_32;
191 let DecoderNamespace = "MipsFP64" in {
192 def MOVT_D64 : CMov_F_F_FT<"movt.d", FGR64Opnd, II_MOVT_D, MipsCMovFP_T>,
193 CMov_F_F_FM<17, 1>, INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
194 def MOVF_D64 : CMov_F_F_FT<"movf.d", FGR64Opnd, II_MOVF_D, MipsCMovFP_F>,
195 CMov_F_F_FM<17, 0>, INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
198 // Instantiation of conditional move patterns.
199 defm : MovzPats0<GPR32, GPR32, MOVZ_I_I, SLT, SLTu, SLTi, SLTiu>,
200 INSN_MIPS4_32_NOT_32R6_64R6;
201 defm : MovzPats1<GPR32, GPR32, MOVZ_I_I, XOR>, INSN_MIPS4_32_NOT_32R6_64R6;
202 defm : MovzPats2<GPR32, GPR32, MOVZ_I_I, XORi>, INSN_MIPS4_32_NOT_32R6_64R6;
204 defm : MovzPats0<GPR32, GPR64, MOVZ_I_I64, SLT, SLTu, SLTi, SLTiu>,
205 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
206 defm : MovzPats0<GPR64, GPR32, MOVZ_I_I, SLT64, SLTu64, SLTi64, SLTiu64>,
207 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
208 defm : MovzPats0<GPR64, GPR64, MOVZ_I_I64, SLT64, SLTu64, SLTi64, SLTiu64>,
209 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
210 defm : MovzPats1<GPR32, GPR64, MOVZ_I_I64, XOR>,
211 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
212 defm : MovzPats1<GPR64, GPR32, MOVZ_I64_I, XOR64>,
213 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
214 defm : MovzPats1<GPR64, GPR64, MOVZ_I64_I64, XOR64>,
215 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
216 defm : MovzPats2<GPR32, GPR64, MOVZ_I_I64, XORi>,
217 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
218 defm : MovzPats2<GPR64, GPR32, MOVZ_I64_I, XORi64>,
219 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
220 defm : MovzPats2<GPR64, GPR64, MOVZ_I64_I64, XORi64>,
221 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
223 defm : MovnPats<GPR32, GPR32, MOVN_I_I, XOR>, INSN_MIPS4_32_NOT_32R6_64R6;
225 defm : MovnPats<GPR32, GPR64, MOVN_I_I64, XOR>, INSN_MIPS4_32_NOT_32R6_64R6,
227 defm : MovnPats<GPR64, GPR32, MOVN_I64_I, XOR64>, INSN_MIPS4_32_NOT_32R6_64R6,
229 defm : MovnPats<GPR64, GPR64, MOVN_I64_I64, XOR64>, INSN_MIPS4_32_NOT_32R6_64R6,
232 defm : MovzPats0<GPR32, FGR32, MOVZ_I_S, SLT, SLTu, SLTi, SLTiu>,
233 INSN_MIPS4_32_NOT_32R6_64R6;
234 defm : MovzPats1<GPR32, FGR32, MOVZ_I_S, XOR>, INSN_MIPS4_32_NOT_32R6_64R6;
235 defm : MovnPats<GPR32, FGR32, MOVN_I_S, XOR>, INSN_MIPS4_32_NOT_32R6_64R6;
237 defm : MovzPats0<GPR64, FGR32, MOVZ_I_S, SLT64, SLTu64, SLTi64, SLTiu64>,
238 INSN_MIPS4_32_NOT_32R6_64R6, GPR_64;
239 defm : MovzPats1<GPR64, FGR32, MOVZ_I64_S, XOR64>, INSN_MIPS4_32_NOT_32R6_64R6,
241 defm : MovnPats<GPR64, FGR32, MOVN_I64_S, XOR64>, INSN_MIPS4_32_NOT_32R6_64R6,
244 defm : MovzPats0<GPR32, AFGR64, MOVZ_I_D32, SLT, SLTu, SLTi, SLTiu>,
245 INSN_MIPS4_32_NOT_32R6_64R6, FGR_32;
246 defm : MovzPats1<GPR32, AFGR64, MOVZ_I_D32, XOR>, INSN_MIPS4_32_NOT_32R6_64R6,
248 defm : MovnPats<GPR32, AFGR64, MOVN_I_D32, XOR>, INSN_MIPS4_32_NOT_32R6_64R6,
251 defm : MovzPats0<GPR32, FGR64, MOVZ_I_D64, SLT, SLTu, SLTi, SLTiu>,
252 INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
253 defm : MovzPats0<GPR64, FGR64, MOVZ_I_D64, SLT64, SLTu64, SLTi64, SLTiu64>,
254 INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
255 defm : MovzPats1<GPR32, FGR64, MOVZ_I_D64, XOR>, INSN_MIPS4_32_NOT_32R6_64R6,
257 defm : MovzPats1<GPR64, FGR64, MOVZ_I64_D64, XOR64>,
258 INSN_MIPS4_32_NOT_32R6_64R6, FGR_64;
259 defm : MovnPats<GPR32, FGR64, MOVN_I_D64, XOR>, INSN_MIPS4_32_NOT_32R6_64R6,
261 defm : MovnPats<GPR64, FGR64, MOVN_I64_D64, XOR64>, INSN_MIPS4_32_NOT_32R6_64R6,
264 // For targets that don't have conditional-move instructions
265 // we have to match SELECT nodes with pseudo instructions.
266 let usesCustomInserter = 1, hasNoSchedulingInfo = 1 in {
267 class Select_Pseudo<RegisterOperand RC> :
268 PseudoSE<(outs RC:$dst), (ins GPR32Opnd:$cond, RC:$T, RC:$F),
269 [(set RC:$dst, (select GPR32Opnd:$cond, RC:$T, RC:$F))]>,
272 class SelectFP_Pseudo_T<RegisterOperand RC> :
273 PseudoSE<(outs RC:$dst), (ins FCCRegsOpnd:$cond, RC:$T, RC:$F),
274 [(set RC:$dst, (MipsCMovFP_T RC:$T, FCCRegsOpnd:$cond, RC:$F))]>,
277 class SelectFP_Pseudo_F<RegisterOperand RC> :
278 PseudoSE<(outs RC:$dst), (ins FCCRegsOpnd:$cond, RC:$T, RC:$F),
279 [(set RC:$dst, (MipsCMovFP_F RC:$T, FCCRegsOpnd:$cond, RC:$F))]>,
283 def PseudoSELECT_I : Select_Pseudo<GPR32Opnd>;
284 def PseudoSELECT_I64 : Select_Pseudo<GPR64Opnd>;
285 def PseudoSELECT_S : Select_Pseudo<FGR32Opnd>;
286 def PseudoSELECT_D32 : Select_Pseudo<AFGR64Opnd>, FGR_32;
287 def PseudoSELECT_D64 : Select_Pseudo<FGR64Opnd>, FGR_64;
289 def PseudoSELECTFP_T_I : SelectFP_Pseudo_T<GPR32Opnd>;
290 def PseudoSELECTFP_T_I64 : SelectFP_Pseudo_T<GPR64Opnd>;
291 def PseudoSELECTFP_T_S : SelectFP_Pseudo_T<FGR32Opnd>;
292 def PseudoSELECTFP_T_D32 : SelectFP_Pseudo_T<AFGR64Opnd>, FGR_32;
293 def PseudoSELECTFP_T_D64 : SelectFP_Pseudo_T<FGR64Opnd>, FGR_64;
295 def PseudoSELECTFP_F_I : SelectFP_Pseudo_F<GPR32Opnd>;
296 def PseudoSELECTFP_F_I64 : SelectFP_Pseudo_F<GPR64Opnd>;
297 def PseudoSELECTFP_F_S : SelectFP_Pseudo_F<FGR32Opnd>;
298 def PseudoSELECTFP_F_D32 : SelectFP_Pseudo_F<AFGR64Opnd>, FGR_32;
299 def PseudoSELECTFP_F_D64 : SelectFP_Pseudo_F<FGR64Opnd>, FGR_64;
301 let usesCustomInserter = 1, hasNoSchedulingInfo = 1 in {
302 class D_SELECT_CLASS<RegisterOperand RC> :
303 PseudoSE<(outs RC:$dst1, RC:$dst2),
304 (ins GPR32Opnd:$cond, RC:$a1, RC:$a2, RC:$b1, RC:$b2), []>,
308 def PseudoD_SELECT_I : D_SELECT_CLASS<GPR32Opnd>;
309 def PseudoD_SELECT_I64 : D_SELECT_CLASS<GPR64Opnd>;