1 //=- Mips64r6InstrInfo.td - Mips64r6 Instruction Information -*- 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 Mips64r6 instructions.
11 //===----------------------------------------------------------------------===//
13 // Notes about removals/changes from MIPS32r6:
14 // Reencoded: dclo, dclz
16 //===----------------------------------------------------------------------===//
18 // Instruction Encodings
20 //===----------------------------------------------------------------------===//
22 class DALIGN_ENC : SPECIAL3_DALIGN_FM<OPCODE6_DALIGN>;
23 class DAUI_ENC : DAUI_FM;
24 class DAHI_ENC : REGIMM_FM<OPCODE5_DAHI>;
25 class DATI_ENC : REGIMM_FM<OPCODE5_DATI>;
26 class DBITSWAP_ENC : SPECIAL3_2R_FM<OPCODE6_DBITSWAP>;
27 class DCLO_R6_ENC : SPECIAL_2R_FM<OPCODE6_DCLO>;
28 class DCLZ_R6_ENC : SPECIAL_2R_FM<OPCODE6_DCLZ>;
29 class DDIV_ENC : SPECIAL_3R_FM<0b00010, 0b011110>;
30 class DDIVU_ENC : SPECIAL_3R_FM<0b00010, 0b011111>;
31 class DLSA_R6_ENC : SPECIAL_LSA_FM<OPCODE6_DLSA>;
32 class DMOD_ENC : SPECIAL_3R_FM<0b00011, 0b011110>;
33 class DMODU_ENC : SPECIAL_3R_FM<0b00011, 0b011111>;
34 class DMUH_ENC : SPECIAL_3R_FM<0b00011, 0b011100>;
35 class DMUHU_ENC : SPECIAL_3R_FM<0b00011, 0b011101>;
36 class DMUL_R6_ENC : SPECIAL_3R_FM<0b00010, 0b011100>;
37 class DMULU_ENC : SPECIAL_3R_FM<0b00010, 0b011101>;
38 class LDPC_ENC : PCREL18_FM<OPCODE3_LDPC>;
39 class LWUPC_ENC : PCREL19_FM<OPCODE2_LWUPC>;
40 class LLD_R6_ENC : SPECIAL3_LL_SC_FM<OPCODE6_LLD>;
41 class SCD_R6_ENC : SPECIAL3_LL_SC_FM<OPCODE6_SCD>;
42 class CRC32D_ENC : SPECIAL3_2R_SZ_CRC<3,0>;
43 class CRC32CD_ENC : SPECIAL3_2R_SZ_CRC<3,1>;
45 //===----------------------------------------------------------------------===//
47 // Instruction Descriptions
49 //===----------------------------------------------------------------------===//
51 class AHI_ATI_DESC_BASE<string instr_asm, RegisterOperand GPROpnd,
52 InstrItinClass itin> {
53 dag OutOperandList = (outs GPROpnd:$rs);
54 dag InOperandList = (ins GPROpnd:$rt, uimm16_altrelaxed:$imm);
55 string AsmString = !strconcat(instr_asm, "\t$rs, $rt, $imm");
56 string Constraints = "$rs = $rt";
57 InstrItinClass Itinerary = itin;
60 class DALIGN_DESC : ALIGN_DESC_BASE<"dalign", GPR64Opnd, uimm3, II_DALIGN>;
61 class DAHI_DESC : AHI_ATI_DESC_BASE<"dahi", GPR64Opnd, II_DAHI>;
62 class DATI_DESC : AHI_ATI_DESC_BASE<"dati", GPR64Opnd, II_DATI>;
63 class DAUI_DESC : AUI_DESC_BASE<"daui", GPR64Opnd, II_DAUI>;
64 class DBITSWAP_DESC : BITSWAP_DESC_BASE<"dbitswap", GPR64Opnd, II_DBITSWAP>;
65 class DCLO_R6_DESC : CLO_R6_DESC_BASE<"dclo", GPR64Opnd, II_DCLO>;
66 class DCLZ_R6_DESC : CLZ_R6_DESC_BASE<"dclz", GPR64Opnd, II_DCLZ>;
67 class DDIV_DESC : DIVMOD_DESC_BASE<"ddiv", GPR64Opnd, II_DDIV, sdiv>;
68 class DDIVU_DESC : DIVMOD_DESC_BASE<"ddivu", GPR64Opnd, II_DDIVU, udiv>;
69 class DLSA_R6_DESC : LSA_R6_DESC_BASE<"dlsa", GPR64Opnd, uimm2_plus1, II_DLSA>;
70 class DMOD_DESC : DIVMOD_DESC_BASE<"dmod", GPR64Opnd, II_DMOD, srem>;
71 class DMODU_DESC : DIVMOD_DESC_BASE<"dmodu", GPR64Opnd, II_DMODU, urem>;
72 class DMUH_DESC : MUL_R6_DESC_BASE<"dmuh", GPR64Opnd, II_DMUH, mulhs>;
73 class DMUHU_DESC : MUL_R6_DESC_BASE<"dmuhu", GPR64Opnd, II_DMUHU, mulhu>;
74 class DMUL_R6_DESC : MUL_R6_DESC_BASE<"dmul", GPR64Opnd, II_DMUL, mul>;
75 class DMULU_DESC : MUL_R6_DESC_BASE<"dmulu", GPR64Opnd, II_DMUL>;
76 class LDPC_DESC : PCREL_DESC_BASE<"ldpc", GPR64Opnd, simm18_lsl3, II_LDPC>;
77 class LWUPC_DESC : PCREL_DESC_BASE<"lwupc", GPR32Opnd, simm19_lsl2, II_LWUPC>;
78 class LLD_R6_DESC : LL_R6_DESC_BASE<"lld", GPR64Opnd, mem_simm9_exp, II_LLD>;
79 class SCD_R6_DESC : SC_R6_DESC_BASE<"scd", GPR64Opnd, II_SCD>;
80 class SELEQZ64_DESC : SELEQNE_Z_DESC_BASE<"seleqz", GPR64Opnd>;
81 class SELNEZ64_DESC : SELEQNE_Z_DESC_BASE<"selnez", GPR64Opnd>;
83 class BGEC64_DESC : CMP_BC_DESC_BASE<"bgec", brtarget, GPR64Opnd>;
84 class BGEUC64_DESC : CMP_BC_DESC_BASE<"bgeuc", brtarget, GPR64Opnd>;
85 class BEQC64_DESC : CMP_BC_DESC_BASE<"beqc", brtarget, GPR64Opnd>;
86 class BNEC64_DESC : CMP_BC_DESC_BASE<"bnec", brtarget, GPR64Opnd>;
87 class BLTC64_DESC : CMP_BC_DESC_BASE<"bltc", brtarget, GPR64Opnd>;
88 class BLTUC64_DESC : CMP_BC_DESC_BASE<"bltuc", brtarget, GPR64Opnd>;
89 class BLTZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"bltzc", brtarget, GPR64Opnd>;
90 class BGEZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"bgezc", brtarget, GPR64Opnd>;
91 class BLEZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"blezc", brtarget, GPR64Opnd>;
92 class BGTZC64_DESC : CMP_CBR_RT_Z_DESC_BASE<"bgtzc", brtarget, GPR64Opnd>;
93 class BEQZC64_DESC : CMP_CBR_EQNE_Z_DESC_BASE<"beqzc", brtarget21, GPR64Opnd>;
94 class BNEZC64_DESC : CMP_CBR_EQNE_Z_DESC_BASE<"bnezc", brtarget21, GPR64Opnd>;
96 class JIALC64_DESC : JMP_IDX_COMPACT_DESC_BASE<"jialc", calloffset16,
97 GPR64Opnd, II_JIALC> {
99 list<Register> Defs = [RA];
102 class JIC64_DESC : JMP_IDX_COMPACT_DESC_BASE<"jic", jmpoffset16, GPR64Opnd,
105 bit isTerminator = 1;
106 list<Register> Defs = [AT];
109 class LL64_R6_DESC : LL_R6_DESC_BASE<"ll", GPR32Opnd, mem_simm9_exp, II_LL>;
110 class SC64_R6_DESC : SC_R6_DESC_BASE<"sc", GPR32Opnd, II_SC>;
112 class JR_HB64_R6_DESC : JR_HB_DESC_BASE<"jr.hb", GPR64Opnd> {
114 bit isIndirectBranch = 1;
115 bit hasDelaySlot = 1;
119 InstrItinClass Itinerary = II_JR_HB;
122 class CRC32D_DESC : CRC_DESC_BASE<"crc32d", GPR32Opnd, II_CRC32D>;
123 class CRC32CD_DESC : CRC_DESC_BASE<"crc32cd", GPR32Opnd, II_CRC32CD>;
125 //===----------------------------------------------------------------------===//
127 // Instruction Definitions
129 //===----------------------------------------------------------------------===//
131 let AdditionalPredicates = [NotInMicroMips] in {
132 let DecoderMethod = "DecodeDAHIDATI" in {
133 def DATI : DATI_ENC, DATI_DESC, ISA_MIPS64R6;
134 def DAHI : DAHI_ENC, DAHI_DESC, ISA_MIPS64R6;
136 def DAUI : DAUI_ENC, DAUI_DESC, ISA_MIPS64R6;
137 def DALIGN : DALIGN_ENC, DALIGN_DESC, ISA_MIPS64R6;
138 def DBITSWAP : DBITSWAP_ENC, DBITSWAP_DESC, ISA_MIPS64R6;
139 def DCLO_R6 : DCLO_R6_ENC, DCLO_R6_DESC, ISA_MIPS64R6;
140 def DCLZ_R6 : DCLZ_R6_ENC, DCLZ_R6_DESC, ISA_MIPS64R6;
141 def DDIV : DDIV_ENC, DDIV_DESC, ISA_MIPS64R6;
142 def DDIVU : DDIVU_ENC, DDIVU_DESC, ISA_MIPS64R6;
143 def DMOD : DMOD_ENC, DMOD_DESC, ISA_MIPS64R6;
144 def DMODU : DMODU_ENC, DMODU_DESC, ISA_MIPS64R6;
145 def DLSA_R6 : DLSA_R6_ENC, DLSA_R6_DESC, ISA_MIPS64R6;
146 def DMUH: DMUH_ENC, DMUH_DESC, ISA_MIPS64R6;
147 def DMUHU: DMUHU_ENC, DMUHU_DESC, ISA_MIPS64R6;
148 def DMUL_R6: DMUL_R6_ENC, DMUL_R6_DESC, ISA_MIPS64R6;
149 def DMULU: DMULU_ENC, DMULU_DESC, ISA_MIPS64R6;
150 def LLD_R6 : LLD_R6_ENC, LLD_R6_DESC, ISA_MIPS64R6;
152 def LDPC: LDPC_ENC, LDPC_DESC, ISA_MIPS64R6;
153 def LWUPC : LWUPC_ENC, LWUPC_DESC, ISA_MIPS64R6;
154 def SCD_R6 : SCD_R6_ENC, SCD_R6_DESC, ISA_MIPS32R6;
155 let DecoderNamespace = "Mips32r6_64r6_GP64" in {
156 def SELEQZ64 : SELEQZ_ENC, SELEQZ64_DESC, ISA_MIPS32R6, GPR_64;
157 def SELNEZ64 : SELNEZ_ENC, SELNEZ64_DESC, ISA_MIPS32R6, GPR_64;
158 def JR_HB64_R6 : JR_HB_R6_ENC, JR_HB64_R6_DESC, ISA_MIPS32R6;
160 let AdditionalPredicates = [NotInMicroMips],
161 DecoderNamespace = "Mips32r6_64r6_PTR64" in {
162 def LL64_R6 : LL_R6_ENC, LL64_R6_DESC, PTR_64, ISA_MIPS64R6;
163 def SC64_R6 : SC_R6_ENC, SC64_R6_DESC, PTR_64, ISA_MIPS64R6;
166 let DecoderNamespace = "Mips32r6_64r6_GP64" in {
167 // Jump and Branch Instructions
168 def JIALC64 : JIALC_ENC, JIALC64_DESC, ISA_MIPS64R6, GPR_64;
169 def JIC64 : JIC_ENC, JIC64_DESC, ISA_MIPS64R6, GPR_64;
171 def BEQC64 : BEQC_ENC, BEQC64_DESC, ISA_MIPS64R6, GPR_64;
172 def BEQZC64 : BEQZC_ENC, BEQZC64_DESC, ISA_MIPS64R6, GPR_64;
173 def BGEC64 : BGEC_ENC, BGEC64_DESC, ISA_MIPS64R6, GPR_64;
174 def BGEUC64 : BGEUC_ENC, BGEUC64_DESC, ISA_MIPS64R6, GPR_64;
175 def BGTZC64 : BGTZC_ENC, BGTZC64_DESC, ISA_MIPS64R6, GPR_64;
176 def BLEZC64 : BLEZC_ENC, BLEZC64_DESC, ISA_MIPS64R6, GPR_64;
177 def BLTC64 : BLTC_ENC, BLTC64_DESC, ISA_MIPS64R6, GPR_64;
178 def BLTUC64 : BLTUC_ENC, BLTUC64_DESC, ISA_MIPS64R6, GPR_64;
179 def BNEC64 : BNEC_ENC, BNEC64_DESC, ISA_MIPS64R6, GPR_64;
180 def BNEZC64 : BNEZC_ENC, BNEZC64_DESC, ISA_MIPS64R6, GPR_64;
182 let DecoderNamespace = "Mips32r6_64r6_BranchZero" in {
183 def BLTZC64 : BLTZC_ENC, BLTZC64_DESC, ISA_MIPS64R6, GPR_64;
184 def BGEZC64 : BGEZC_ENC, BGEZC64_DESC, ISA_MIPS64R6, GPR_64;
186 let AdditionalPredicates = [NotInMicroMips] in {
187 def CRC32D : R6MMR6Rel, CRC32D_ENC, CRC32D_DESC, ISA_MIPS64R6, ASE_CRC;
188 def CRC32CD : R6MMR6Rel, CRC32CD_ENC, CRC32CD_DESC, ISA_MIPS64R6, ASE_CRC;
191 //===----------------------------------------------------------------------===//
193 // Instruction Aliases
195 //===----------------------------------------------------------------------===//
197 def : MipsInstAlias<"jr $rs", (JALR64 ZERO_64, GPR64Opnd:$rs), 1>, ISA_MIPS64R6;
199 def : MipsInstAlias<"jrc $rs", (JIC64 GPR64Opnd:$rs, 0), 1>, ISA_MIPS64R6;
201 def : MipsInstAlias<"jalrc $rs", (JIALC64 GPR64Opnd:$rs, 0), 1>, ISA_MIPS64R6;
202 //===----------------------------------------------------------------------===//
204 // Patterns and Pseudo Instructions
206 //===----------------------------------------------------------------------===//
209 def : MipsPat<(select i64:$cond, i64:$t, i64:$f),
210 (OR64 (SELNEZ64 i64:$t, i64:$cond),
211 (SELEQZ64 i64:$f, i64:$cond))>,
213 def : MipsPat<(select (i32 (seteq i64:$cond, immz)), i64:$t, i64:$f),
214 (OR64 (SELEQZ64 i64:$t, i64:$cond),
215 (SELNEZ64 i64:$f, i64:$cond))>,
217 def : MipsPat<(select (i32 (setne i64:$cond, immz)), i64:$t, i64:$f),
218 (OR64 (SELNEZ64 i64:$t, i64:$cond),
219 (SELEQZ64 i64:$f, i64:$cond))>,
221 def : MipsPat<(select (i32 (seteq i64:$cond, immZExt16_64:$imm)), i64:$t, i64:$f),
222 (OR64 (SELEQZ64 i64:$t, (XORi64 i64:$cond, immZExt16_64:$imm)),
223 (SELNEZ64 i64:$f, (XORi64 i64:$cond, immZExt16_64:$imm)))>,
225 def : MipsPat<(select (i32 (setne i64:$cond, immZExt16_64:$imm)), i64:$t, i64:$f),
226 (OR64 (SELNEZ64 i64:$t, (XORi64 i64:$cond, immZExt16_64:$imm)),
227 (SELEQZ64 i64:$f, (XORi64 i64:$cond, immZExt16_64:$imm)))>,
230 (select (i32 (setgt i64:$cond, immSExt16Plus1:$imm)), i64:$t, i64:$f),
231 (OR64 (SELEQZ64 i64:$t,
232 (SUBREG_TO_REG (i64 0), (SLTi64 i64:$cond, (Plus1 imm:$imm)),
235 (SUBREG_TO_REG (i64 0), (SLTi64 i64:$cond, (Plus1 imm:$imm)),
239 (select (i32 (setugt i64:$cond, immSExt16Plus1:$imm)), i64:$t, i64:$f),
240 (OR64 (SELEQZ64 i64:$t,
241 (SUBREG_TO_REG (i64 0), (SLTiu64 i64:$cond, (Plus1 imm:$imm)),
244 (SUBREG_TO_REG (i64 0), (SLTiu64 i64:$cond, (Plus1 imm:$imm)),
248 def : MipsPat<(select (i32 (setne i64:$cond, immz)), i64:$t, immz),
249 (SELNEZ64 i64:$t, i64:$cond)>, ISA_MIPS64R6;
250 def : MipsPat<(select (i32 (seteq i64:$cond, immz)), i64:$t, immz),
251 (SELEQZ64 i64:$t, i64:$cond)>, ISA_MIPS64R6;
252 def : MipsPat<(select (i32 (setne i64:$cond, immz)), immz, i64:$f),
253 (SELEQZ64 i64:$f, i64:$cond)>, ISA_MIPS64R6;
254 def : MipsPat<(select (i32 (seteq i64:$cond, immz)), immz, i64:$f),
255 (SELNEZ64 i64:$f, i64:$cond)>, ISA_MIPS64R6;
257 // i64 selects from an i32 comparison
258 // One complicating factor here is that bits 32-63 of an i32 are undefined.
259 // FIXME: Ideally, setcc would always produce an i64 on MIPS64 targets.
260 // This would allow us to remove the sign-extensions here.
261 def : MipsPat<(select i32:$cond, i64:$t, i64:$f),
262 (OR64 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond)),
263 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond)))>,
265 def : MipsPat<(select (i32 (seteq i32:$cond, immz)), i64:$t, i64:$f),
266 (OR64 (SELEQZ64 i64:$t, (SLL64_32 i32:$cond)),
267 (SELNEZ64 i64:$f, (SLL64_32 i32:$cond)))>,
269 def : MipsPat<(select (i32 (setne i32:$cond, immz)), i64:$t, i64:$f),
270 (OR64 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond)),
271 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond)))>,
273 def : MipsPat<(select (i32 (seteq i32:$cond, immZExt16:$imm)), i64:$t, i64:$f),
274 (OR64 (SELEQZ64 i64:$t, (SLL64_32 (XORi i32:$cond,
276 (SELNEZ64 i64:$f, (SLL64_32 (XORi i32:$cond,
279 def : MipsPat<(select (i32 (setne i32:$cond, immZExt16:$imm)), i64:$t, i64:$f),
280 (OR64 (SELNEZ64 i64:$t, (SLL64_32 (XORi i32:$cond,
282 (SELEQZ64 i64:$f, (SLL64_32 (XORi i32:$cond,
286 def : MipsPat<(select i32:$cond, i64:$t, immz),
287 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond))>,
289 def : MipsPat<(select (i32 (setne i32:$cond, immz)), i64:$t, immz),
290 (SELNEZ64 i64:$t, (SLL64_32 i32:$cond))>,
292 def : MipsPat<(select (i32 (seteq i32:$cond, immz)), i64:$t, immz),
293 (SELEQZ64 i64:$t, (SLL64_32 i32:$cond))>,
295 def : MipsPat<(select i32:$cond, immz, i64:$f),
296 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond))>,
298 def : MipsPat<(select (i32 (setne i32:$cond, immz)), immz, i64:$f),
299 (SELEQZ64 i64:$f, (SLL64_32 i32:$cond))>,
301 def : MipsPat<(select (i32 (seteq i32:$cond, immz)), immz, i64:$f),
302 (SELNEZ64 i64:$f, (SLL64_32 i32:$cond))>,
305 // Patterns used for matching away redundant sign extensions.
306 // MIPS32 arithmetic instructions sign extend their result implicitly.
307 def : MipsPat<(i64 (sext (i32 (mul GPR32:$src, GPR32:$src2)))),
308 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
309 (MUL_R6 GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
310 def : MipsPat<(i64 (sext (i32 (sdiv GPR32:$src, GPR32:$src2)))),
311 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
312 (DIV GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
313 def : MipsPat<(i64 (sext (i32 (udiv GPR32:$src, GPR32:$src2)))),
314 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
315 (DIVU GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
316 def : MipsPat<(i64 (sext (i32 (srem GPR32:$src, GPR32:$src2)))),
317 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
318 (MOD GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
319 def : MipsPat<(i64 (sext (i32 (urem GPR32:$src, GPR32:$src2)))),
320 (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
321 (MODU GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
323 // Pseudo instructions
325 let AdditionalPredicates = [NotInMips16Mode, NotInMicroMips,
326 NoIndirectJumpGuards] in {
327 def TAILCALL64R6REG : TailCallRegR6<JALR64, ZERO_64, GPR64Opnd>, ISA_MIPS64R6;
328 def PseudoIndirectBranch64R6 : PseudoIndirectBranchBaseR6<JALR64, ZERO_64,
333 let AdditionalPredicates = [NotInMips16Mode, NotInMicroMips,
334 UseIndirectJumpsHazard] in {
335 def TAILCALLHB64R6REG : TailCallReg<JR_HB64_R6, GPR64Opnd>,
337 def PseudoIndrectHazardBranch64R6 : PseudoIndirectBranchBase<JR_HB64_R6,