lib/Target/AArch64/AArch64SchedPredicates.td

   1 //===- AArch64SchedPredicates.td - AArch64 Sched Preds -----*- tablegen -*-===//
   2 //
   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
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file defines scheduling predicate definitions that are used by the
  10 // AArch64 subtargets.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 // Function mappers.
  15
  16 // Check the extension type in arithmetic instructions.
  17 let FunctionMapper = "AArch64_AM::getArithExtendType" in {
  18   def CheckExtUXTB                      : CheckImmOperand_s<3, "AArch64_AM::UXTB">;
  19   def CheckExtUXTH                      : CheckImmOperand_s<3, "AArch64_AM::UXTH">;
  20   def CheckExtUXTW                      : CheckImmOperand_s<3, "AArch64_AM::UXTW">;
  21   def CheckExtUXTX                      : CheckImmOperand_s<3, "AArch64_AM::UXTX">;
  22   def CheckExtSXTB                      : CheckImmOperand_s<3, "AArch64_AM::SXTB">;
  23   def CheckExtSXTH                      : CheckImmOperand_s<3, "AArch64_AM::SXTH">;
  24   def CheckExtSXTW                      : CheckImmOperand_s<3, "AArch64_AM::SXTW">;
  25   def CheckExtSXTX                      : CheckImmOperand_s<3, "AArch64_AM::SXTX">;
  26 }
  27
  28 // Check for shifting in extended arithmetic instructions.
  29 foreach I = {0-3} in {
  30   let FunctionMapper = "AArch64_AM::getArithShiftValue" in
  31   def CheckExtBy#I                      : CheckImmOperand<3, I>;
  32 }
  33
  34 // Check the extension type in the register offset addressing mode.
  35 let FunctionMapper = "AArch64_AM::getMemExtendType" in {
  36   def CheckMemExtUXTW                   : CheckImmOperand_s<3, "AArch64_AM::UXTW">;
  37   def CheckMemExtLSL                    : CheckImmOperand_s<3, "AArch64_AM::UXTX">;
  38   def CheckMemExtSXTW                   : CheckImmOperand_s<3, "AArch64_AM::SXTW">;
  39   def CheckMemExtSXTX                   : CheckImmOperand_s<3, "AArch64_AM::SXTX">;
  40 }
  41
  42 // Check for scaling in the register offset addressing mode.
  43 let FunctionMapper = "AArch64_AM::getMemDoShift" in
  44 def CheckMemScaled                      : CheckImmOperandSimple<3>;
  45
  46 // Check the shifting type in arithmetic and logic instructions.
  47 let FunctionMapper = "AArch64_AM::getShiftType" in {
  48   def CheckShiftLSL                : CheckImmOperand_s<3, "AArch64_AM::LSL">;
  49   def CheckShiftLSR                : CheckImmOperand_s<3, "AArch64_AM::LSR">;
  50   def CheckShiftASR                : CheckImmOperand_s<3, "AArch64_AM::ASR">;
  51   def CheckShiftROR                : CheckImmOperand_s<3, "AArch64_AM::ROR">;
  52   def CheckShiftMSL                : CheckImmOperand_s<3, "AArch64_AM::MSL">;
  53 }
  54
  55 // Check for shifting in arithmetic and logic instructions.
  56 foreach I = {0-3, 8} in {
  57   let FunctionMapper = "AArch64_AM::getShiftValue" in
  58   def CheckShiftBy#I        : CheckImmOperand<3, I>;
  59 }
  60
  61 // Generic predicates.
  62
  63 // Identify whether an instruction is the 64-bit NEON form based on its result.
  64 def CheckDForm             : CheckAll<[CheckIsRegOperand<0>,
  65                                        CheckAny<[CheckRegOperand<0, D0>,
  66                                                  CheckRegOperand<0, D1>,
  67                                                  CheckRegOperand<0, D2>,
  68                                                  CheckRegOperand<0, D3>,
  69                                                  CheckRegOperand<0, D4>,
  70                                                  CheckRegOperand<0, D5>,
  71                                                  CheckRegOperand<0, D6>,
  72                                                  CheckRegOperand<0, D7>,
  73                                                  CheckRegOperand<0, D8>,
  74                                                  CheckRegOperand<0, D9>,
  75                                                  CheckRegOperand<0, D10>,
  76                                                  CheckRegOperand<0, D11>,
  77                                                  CheckRegOperand<0, D12>,
  78                                                  CheckRegOperand<0, D13>,
  79                                                  CheckRegOperand<0, D14>,
  80                                                  CheckRegOperand<0, D15>,
  81                                                  CheckRegOperand<0, D16>,
  82                                                  CheckRegOperand<0, D17>,
  83                                                  CheckRegOperand<0, D18>,
  84                                                  CheckRegOperand<0, D19>,
  85                                                  CheckRegOperand<0, D20>,
  86                                                  CheckRegOperand<0, D21>,
  87                                                  CheckRegOperand<0, D22>,
  88                                                  CheckRegOperand<0, D23>,
  89                                                  CheckRegOperand<0, D24>,
  90                                                  CheckRegOperand<0, D25>,
  91                                                  CheckRegOperand<0, D26>,
  92                                                  CheckRegOperand<0, D27>,
  93                                                  CheckRegOperand<0, D28>,
  94                                                  CheckRegOperand<0, D29>,
  95                                                  CheckRegOperand<0, D30>,
  96                                                  CheckRegOperand<0, D31>]>]>;
  97
  98 // Identify whether an instruction is the 128-bit NEON form based on its result.
  99 def CheckQForm             : CheckAll<[CheckIsRegOperand<0>,
 100                                        CheckAny<[CheckRegOperand<0, Q0>,
 101                                                  CheckRegOperand<0, Q1>,
 102                                                  CheckRegOperand<0, Q2>,
 103                                                  CheckRegOperand<0, Q3>,
 104                                                  CheckRegOperand<0, Q4>,
 105                                                  CheckRegOperand<0, Q5>,
 106                                                  CheckRegOperand<0, Q6>,
 107                                                  CheckRegOperand<0, Q7>,
 108                                                  CheckRegOperand<0, Q8>,
 109                                                  CheckRegOperand<0, Q9>,
 110                                                  CheckRegOperand<0, Q10>,
 111                                                  CheckRegOperand<0, Q11>,
 112                                                  CheckRegOperand<0, Q12>,
 113                                                  CheckRegOperand<0, Q13>,
 114                                                  CheckRegOperand<0, Q14>,
 115                                                  CheckRegOperand<0, Q15>,
 116                                                  CheckRegOperand<0, Q16>,
 117                                                  CheckRegOperand<0, Q17>,
 118                                                  CheckRegOperand<0, Q18>,
 119                                                  CheckRegOperand<0, Q19>,
 120                                                  CheckRegOperand<0, Q20>,
 121                                                  CheckRegOperand<0, Q21>,
 122                                                  CheckRegOperand<0, Q22>,
 123                                                  CheckRegOperand<0, Q23>,
 124                                                  CheckRegOperand<0, Q24>,
 125                                                  CheckRegOperand<0, Q25>,
 126                                                  CheckRegOperand<0, Q26>,
 127                                                  CheckRegOperand<0, Q27>,
 128                                                  CheckRegOperand<0, Q28>,
 129                                                  CheckRegOperand<0, Q29>,
 130                                                  CheckRegOperand<0, Q30>,
 131                                                  CheckRegOperand<0, Q31>]>]>;
 132
 133 // Identify arithmetic instructions with extend.
 134 def IsArithExtOp           : CheckOpcode<[ADDWrx, ADDXrx, ADDSWrx, ADDSXrx,
 135                                           SUBWrx, SUBXrx, SUBSWrx, SUBSXrx,
 136                                           ADDXrx64, ADDSXrx64,
 137                                           SUBXrx64, SUBSXrx64]>;
 138
 139 // Identify arithmetic immediate instructions.
 140 def IsArithImmOp           : CheckOpcode<[ADDWri, ADDXri, ADDSWri, ADDSXri,
 141                                           SUBWri, SUBXri, SUBSWri, SUBSXri]>;
 142
 143 // Identify arithmetic instructions with shift.
 144 def IsArithShiftOp         : CheckOpcode<[ADDWrs, ADDXrs, ADDSWrs, ADDSXrs,
 145                                           SUBWrs, SUBXrs, SUBSWrs, SUBSXrs]>;
 146
 147 // Identify arithmetic instructions without shift.
 148 def IsArithUnshiftOp       : CheckOpcode<[ADDWrr, ADDXrr, ADDSWrr, ADDSXrr,
 149                                           SUBWrr, SUBXrr, SUBSWrr, SUBSXrr]>;
 150
 151 // Identify logic immediate instructions.
 152 def IsLogicImmOp           : CheckOpcode<[ANDWri, ANDXri,
 153                                           EORWri, EORXri,
 154                                           ORRWri, ORRXri]>;
 155
 156 // Identify logic instructions with shift.
 157 def IsLogicShiftOp         : CheckOpcode<[ANDWrs, ANDXrs, ANDSWrs, ANDSXrs,
 158                                           BICWrs, BICXrs, BICSWrs, BICSXrs,
 159                                           EONWrs, EONXrs,
 160                                           EORWrs, EORXrs,
 161                                           ORNWrs, ORNXrs,
 162                                           ORRWrs, ORRXrs]>;
 163
 164 // Identify logic instructions without shift.
 165 def IsLogicUnshiftOp       : CheckOpcode<[ANDWrr, ANDXrr, ANDSWrr, ANDSXrr,
 166                                           BICWrr, BICXrr, BICSWrr, BICSXrr,
 167                                           EONWrr, EONXrr,
 168                                           EORWrr, EORXrr,
 169                                           ORNWrr, ORNXrr,
 170                                           ORRWrr, ORRXrr]>;
 171
 172 // Identify arithmetic and logic immediate instructions.
 173 def IsArithLogicImmOp      : CheckOpcode<!listconcat(IsArithImmOp.ValidOpcodes,
 174                                                      IsLogicImmOp.ValidOpcodes)>;
 175
 176 // Identify arithmetic and logic instructions with shift.
 177 def IsArithLogicShiftOp    : CheckOpcode<!listconcat(IsArithShiftOp.ValidOpcodes,
 178                                                      IsLogicShiftOp.ValidOpcodes)>;
 179
 180 // Identify arithmetic and logic instructions without shift.
 181 def IsArithLogicUnshiftOp  : CheckOpcode<!listconcat(IsArithUnshiftOp.ValidOpcodes,
 182                                                      IsLogicUnshiftOp.ValidOpcodes)>;
 183
 184 // Identify whether an instruction is an ASIMD
 185 // load using the post index addressing mode.
 186 def IsLoadASIMDPostOp      : CheckOpcode<[LD1Onev8b_POST, LD1Onev4h_POST, LD1Onev2s_POST, LD1Onev1d_POST,
 187                                           LD1Onev16b_POST, LD1Onev8h_POST, LD1Onev4s_POST, LD1Onev2d_POST,
 188                                           LD1Twov8b_POST, LD1Twov4h_POST, LD1Twov2s_POST, LD1Twov1d_POST,
 189                                           LD1Twov16b_POST, LD1Twov8h_POST, LD1Twov4s_POST, LD1Twov2d_POST,
 190                                           LD1Threev8b_POST, LD1Threev4h_POST, LD1Threev2s_POST, LD1Threev1d_POST,
 191                                           LD1Threev16b_POST, LD1Threev8h_POST, LD1Threev4s_POST, LD1Threev2d_POST,
 192                                           LD1Fourv8b_POST, LD1Fourv4h_POST, LD1Fourv2s_POST, LD1Fourv1d_POST,
 193                                           LD1Fourv16b_POST, LD1Fourv8h_POST, LD1Fourv4s_POST, LD1Fourv2d_POST,
 194                                           LD1i8_POST, LD1i16_POST, LD1i32_POST, LD1i64_POST,
 195                                           LD1Rv8b_POST, LD1Rv4h_POST, LD1Rv2s_POST, LD1Rv1d_POST,
 196                                           LD1Rv16b_POST, LD1Rv8h_POST, LD1Rv4s_POST, LD1Rv2d_POST,
 197                                           LD2Twov8b_POST, LD2Twov4h_POST, LD2Twov2s_POST,
 198                                           LD2Twov16b_POST, LD2Twov8h_POST, LD2Twov4s_POST, LD2Twov2d_POST,
 199                                           LD2i8_POST, LD2i16_POST, LD2i32_POST, LD2i64_POST,
 200                                           LD2Rv8b_POST, LD2Rv4h_POST, LD2Rv2s_POST, LD2Rv1d_POST,
 201                                           LD2Rv16b_POST, LD2Rv8h_POST, LD2Rv4s_POST, LD2Rv2d_POST,
 202                                           LD3Threev8b_POST, LD3Threev4h_POST, LD3Threev2s_POST,
 203                                           LD3Threev16b_POST, LD3Threev8h_POST, LD3Threev4s_POST, LD3Threev2d_POST,
 204                                           LD3i8_POST, LD3i16_POST, LD3i32_POST, LD3i64_POST,
 205                                           LD3Rv8b_POST, LD3Rv4h_POST, LD3Rv2s_POST, LD3Rv1d_POST,
 206                                           LD3Rv16b_POST, LD3Rv8h_POST, LD3Rv4s_POST, LD3Rv2d_POST,
 207                                           LD4Fourv8b_POST, LD4Fourv4h_POST, LD4Fourv2s_POST,
 208                                           LD4Fourv16b_POST, LD4Fourv8h_POST, LD4Fourv4s_POST, LD4Fourv2d_POST,
 209                                           LD4i8_POST, LD4i16_POST, LD4i32_POST, LD4i64_POST,
 210                                           LD4Rv8b_POST, LD4Rv4h_POST, LD4Rv2s_POST, LD4Rv1d_POST,
 211                                           LD4Rv16b_POST, LD4Rv8h_POST, LD4Rv4s_POST, LD4Rv2d_POST]>;
 212
 213 // Identify whether an instruction is an ASIMD
 214 // store using the post index addressing mode.
 215 def IsStoreASIMDPostOp     : CheckOpcode<[ST1Onev8b_POST, ST1Onev4h_POST, ST1Onev2s_POST, ST1Onev1d_POST,
 216                                           ST1Onev16b_POST, ST1Onev8h_POST, ST1Onev4s_POST, ST1Onev2d_POST,
 217                                           ST1Twov8b_POST, ST1Twov4h_POST, ST1Twov2s_POST, ST1Twov1d_POST,
 218                                           ST1Twov16b_POST, ST1Twov8h_POST, ST1Twov4s_POST, ST1Twov2d_POST,
 219                                           ST1Threev8b_POST, ST1Threev4h_POST, ST1Threev2s_POST, ST1Threev1d_POST,
 220                                           ST1Threev16b_POST, ST1Threev8h_POST, ST1Threev4s_POST, ST1Threev2d_POST,
 221                                           ST1Fourv8b_POST, ST1Fourv4h_POST, ST1Fourv2s_POST, ST1Fourv1d_POST,
 222                                           ST1Fourv16b_POST, ST1Fourv8h_POST, ST1Fourv4s_POST, ST1Fourv2d_POST,
 223                                           ST1i8_POST, ST1i16_POST, ST1i32_POST, ST1i64_POST,
 224                                           ST2Twov8b_POST, ST2Twov4h_POST, ST2Twov2s_POST,
 225                                           ST2Twov16b_POST, ST2Twov8h_POST, ST2Twov4s_POST, ST2Twov2d_POST,
 226                                           ST2i8_POST, ST2i16_POST, ST2i32_POST, ST2i64_POST,
 227                                           ST3Threev8b_POST, ST3Threev4h_POST, ST3Threev2s_POST,
 228                                           ST3Threev16b_POST, ST3Threev8h_POST, ST3Threev4s_POST, ST3Threev2d_POST,
 229                                           ST3i8_POST, ST3i16_POST, ST3i32_POST, ST3i64_POST,
 230                                           ST4Fourv8b_POST, ST4Fourv4h_POST, ST4Fourv2s_POST,
 231                                           ST4Fourv16b_POST, ST4Fourv8h_POST, ST4Fourv4s_POST, ST4Fourv2d_POST,
 232                                           ST4i8_POST, ST4i16_POST, ST4i32_POST, ST4i64_POST]>;
 233
 234 // Identify whether an instruction is an ASIMD load
 235 // or store using the post index addressing mode.
 236 def IsLoadStoreASIMDPostOp : CheckOpcode<!listconcat(IsLoadASIMDPostOp.ValidOpcodes,
 237                                                      IsStoreASIMDPostOp.ValidOpcodes)>;
 238
 239 // Identify whether an instruction is a load
 240 // using the register offset addressing mode.
 241 def IsLoadRegOffsetOp      : CheckOpcode<[PRFMroW, PRFMroX,
 242                                           LDRBBroW, LDRBBroX,
 243                                           LDRSBWroW, LDRSBWroX, LDRSBXroW, LDRSBXroX,
 244                                           LDRHHroW, LDRHHroX,
 245                                           LDRSHWroW, LDRSHWroX, LDRSHXroW, LDRSHXroX,
 246                                           LDRWroW, LDRWroX,
 247                                           LDRSWroW, LDRSWroX,
 248                                           LDRXroW, LDRXroX,
 249                                           LDRBroW, LDRBroX,
 250                                           LDRHroW, LDRHroX,
 251                                           LDRSroW, LDRSroX,
 252                                           LDRDroW, LDRDroX]>;
 253
 254 // Identify whether an instruction is a load
 255 // using the register offset addressing mode.
 256 def IsStoreRegOffsetOp     : CheckOpcode<[STRBBroW, STRBBroX,
 257                                           STRHHroW, STRHHroX,
 258                                           STRWroW, STRWroX,
 259                                           STRXroW, STRXroX,
 260                                           STRBroW, STRBroX,
 261                                           STRHroW, STRHroX,
 262                                           STRSroW, STRSroX,
 263                                           STRDroW, STRDroX]>;
 264
 265 // Identify whether an instruction is a load or
 266 // store using the register offset addressing mode.
 267 def IsLoadStoreRegOffsetOp : CheckOpcode<!listconcat(IsLoadRegOffsetOp.ValidOpcodes,
 268                                                      IsStoreRegOffsetOp.ValidOpcodes)>;
 269
 270 // Target predicates.
 271
 272 // Identify an instruction that effectively transfers a register to another.
 273 def IsCopyIdiomFn     : TIIPredicate<"isCopyIdiom",
 274                                      MCOpcodeSwitchStatement<
 275                                        [// MOV {Rd, SP}, {SP, Rn} =>
 276                                         // ADD {Rd, SP}, {SP, Rn}, #0
 277                                         MCOpcodeSwitchCase<
 278                                           [ADDWri, ADDXri],
 279                                           MCReturnStatement<
 280                                             CheckAll<
 281                                               [CheckIsRegOperand<0>,
 282                                                CheckIsRegOperand<1>,
 283                                                CheckAny<
 284                                                  [CheckRegOperand<0, WSP>,
 285                                                   CheckRegOperand<0, SP>,
 286                                                   CheckRegOperand<1, WSP>,
 287                                                   CheckRegOperand<1, SP>]>,
 288                                                CheckZeroOperand<2>]>>>,
 289                                         // MOV Rd, Rm =>
 290                                         // ORR Rd, ZR, Rm, LSL #0
 291                                         MCOpcodeSwitchCase<
 292                                           [ORRWrs, ORRXrs],
 293                                           MCReturnStatement<
 294                                             CheckAll<
 295                                               [CheckIsRegOperand<1>,
 296                                                CheckIsRegOperand<2>,
 297                                                CheckAny<
 298                                                  [CheckRegOperand<1, WZR>,
 299                                                   CheckRegOperand<1, XZR>]>,
 300                                                CheckShiftBy0]>>>],
 301                                        MCReturnStatement<FalsePred>>>;
 302 def IsCopyIdiomPred   : MCSchedPredicate<IsCopyIdiomFn>;
 303
 304 // Identify arithmetic instructions with an extended register.
 305 def RegExtendedFn     : TIIPredicate<"hasExtendedReg",
 306                                      MCOpcodeSwitchStatement<
 307                                        [MCOpcodeSwitchCase<
 308                                          IsArithExtOp.ValidOpcodes,
 309                                          MCReturnStatement<
 310                                            CheckNot<CheckZeroOperand<3>>>>],
 311                                        MCReturnStatement<FalsePred>>>;
 312 def RegExtendedPred   : MCSchedPredicate<RegExtendedFn>;
 313
 314 // Identify arithmetic and logic instructions with a shifted register.
 315 def RegShiftedFn      : TIIPredicate<"hasShiftedReg",
 316                                      MCOpcodeSwitchStatement<
 317                                        [MCOpcodeSwitchCase<
 318                                           IsArithLogicShiftOp.ValidOpcodes,
 319                                           MCReturnStatement<
 320                                             CheckNot<CheckZeroOperand<3>>>>],
 321                                        MCReturnStatement<FalsePred>>>;
 322 def RegShiftedPred    : MCSchedPredicate<RegShiftedFn>;
 323
 324 // Identify a load or store using the register offset addressing mode
 325 // with an extended or scaled register.
 326 def ScaledIdxFn       : TIIPredicate<"isScaledAddr",
 327                                      MCOpcodeSwitchStatement<
 328                                        [MCOpcodeSwitchCase<
 329                                           IsLoadStoreRegOffsetOp.ValidOpcodes,
 330                                           MCReturnStatement<
 331                                             CheckAny<[CheckNot<CheckMemExtLSL>,
 332                                                       CheckMemScaled]>>>],
 333                                        MCReturnStatement<FalsePred>>>;
 334 def ScaledIdxPred     : MCSchedPredicate<ScaledIdxFn>;
 335
 336 // Identify an instruction that effectively resets a FP register to zero.
 337 def IsZeroFPIdiomFn   : TIIPredicate<"isZeroFPIdiom",
 338                                      MCOpcodeSwitchStatement<
 339                                        [// MOVI Vd, #0
 340                                         MCOpcodeSwitchCase<
 341                                           [MOVIv8b_ns, MOVIv16b_ns,
 342                                            MOVID, MOVIv2d_ns],
 343                                           MCReturnStatement<CheckZeroOperand<1>>>,
 344                                         // MOVI Vd, #0, LSL #0
 345                                         MCOpcodeSwitchCase<
 346                                           [MOVIv4i16, MOVIv8i16,
 347                                            MOVIv2i32, MOVIv4i32],
 348                                           MCReturnStatement<
 349                                             CheckAll<
 350                                               [CheckZeroOperand<1>,
 351                                                CheckZeroOperand<2>]>>>],
 352                                        MCReturnStatement<FalsePred>>>;
 353 def IsZeroFPIdiomPred : MCSchedPredicate<IsZeroFPIdiomFn>;
 354
 355 // Identify an instruction that effectively resets a GP register to zero.
 356 def IsZeroIdiomFn     : TIIPredicate<"isZeroIdiom",
 357                                     MCOpcodeSwitchStatement<
 358                                       [// ORR Rd, ZR, #0
 359                                        MCOpcodeSwitchCase<
 360                                          [ORRWri, ORRXri],
 361                                          MCReturnStatement<
 362                                            CheckAll<
 363                                              [CheckIsRegOperand<1>,
 364                                               CheckAny<
 365                                                 [CheckRegOperand<1, WZR>,
 366                                                  CheckRegOperand<1, XZR>]>,
 367                                               CheckZeroOperand<2>]>>>],
 368                                       MCReturnStatement<FalsePred>>>;
 369 def IsZeroIdiomPred   : MCSchedPredicate<IsZeroIdiomFn>;