lib/Target/ARM/ARM.td

   1 //===-- ARM.td - Describe the ARM Target Machine -----------*- tablegen -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 //===----------------------------------------------------------------------===//
  14 // Target-independent interfaces which we are implementing
  15 //===----------------------------------------------------------------------===//
  16
  17 include "llvm/Target/Target.td"
  18
  19 //===----------------------------------------------------------------------===//
  20 // ARM Subtarget state.
  21 //
  22
  23 def ModeThumb  : SubtargetFeature<"thumb-mode", "InThumbMode", "true",
  24                                   "Thumb mode">;
  25
  26 //===----------------------------------------------------------------------===//
  27 // ARM Subtarget features.
  28 //
  29
  30 def FeatureVFP2 : SubtargetFeature<"vfp2", "HasVFPv2", "true",
  31                                    "Enable VFP2 instructions">;
  32 def FeatureVFP3 : SubtargetFeature<"vfp3", "HasVFPv3", "true",
  33                                    "Enable VFP3 instructions",
  34                                    [FeatureVFP2]>;
  35 def FeatureNEON : SubtargetFeature<"neon", "HasNEON", "true",
  36                                    "Enable NEON instructions",
  37                                    [FeatureVFP3]>;
  38 def FeatureThumb2 : SubtargetFeature<"thumb2", "HasThumb2", "true",
  39                                      "Enable Thumb2 instructions">;
  40 def FeatureNoARM  : SubtargetFeature<"noarm", "NoARM", "true",
  41                                      "Does not support ARM mode execution",
  42                                      [ModeThumb]>;
  43 def FeatureFP16   : SubtargetFeature<"fp16", "HasFP16", "true",
  44                                      "Enable half-precision floating point">;
  45 def FeatureVFP4   : SubtargetFeature<"vfp4", "HasVFPv4", "true",
  46                                      "Enable VFP4 instructions",
  47                                      [FeatureVFP3, FeatureFP16]>;
  48 def FeatureFPARMv8 : SubtargetFeature<"fp-armv8", "HasFPARMv8",
  49                                    "true", "Enable ARMv8 FP",
  50                                    [FeatureVFP4]>;
  51 def FeatureD16    : SubtargetFeature<"d16", "HasD16", "true",
  52                                      "Restrict VFP3 to 16 double registers">;
  53 def FeatureHWDiv  : SubtargetFeature<"hwdiv", "HasHardwareDivide", "true",
  54                                      "Enable divide instructions">;
  55 def FeatureHWDivARM  : SubtargetFeature<"hwdiv-arm",
  56                                         "HasHardwareDivideInARM", "true",
  57                                       "Enable divide instructions in ARM mode">;
  58 def FeatureT2XtPk : SubtargetFeature<"t2xtpk", "HasT2ExtractPack", "true",
  59                                  "Enable Thumb2 extract and pack instructions">;
  60 def FeatureDB     : SubtargetFeature<"db", "HasDataBarrier", "true",
  61                                    "Has data barrier (dmb / dsb) instructions">;
  62 def FeatureSlowFPBrcc : SubtargetFeature<"slow-fp-brcc", "SlowFPBrcc", "true",
  63                                          "FP compare + branch is slow">;
  64 def FeatureVFPOnlySP : SubtargetFeature<"fp-only-sp", "FPOnlySP", "true",
  65                           "Floating point unit supports single precision only">;
  66 def FeaturePerfMon : SubtargetFeature<"perfmon", "HasPerfMon", "true",
  67                            "Enable support for Performance Monitor extensions">;
  68 def FeatureTrustZone : SubtargetFeature<"trustzone", "HasTrustZone", "true",
  69                           "Enable support for TrustZone security extensions">;
  70 def FeatureCrypto : SubtargetFeature<"crypto", "HasCrypto", "true",
  71                           "Enable support for Cryptography extensions",
  72                           [FeatureNEON]>;
  73 def FeatureCRC : SubtargetFeature<"crc", "HasCRC", "true",
  74                           "Enable support for CRC instructions">;
  75
  76 // Cyclone has preferred instructions for zeroing VFP registers, which can
  77 // execute in 0 cycles.
  78 def FeatureZCZeroing : SubtargetFeature<"zcz", "HasZeroCycleZeroing", "true",
  79                                         "Has zero-cycle zeroing instructions">;
  80
  81 // Some processors have FP multiply-accumulate instructions that don't
  82 // play nicely with other VFP / NEON instructions, and it's generally better
  83 // to just not use them.
  84 def FeatureHasSlowFPVMLx : SubtargetFeature<"slowfpvmlx", "SlowFPVMLx", "true",
  85                                          "Disable VFP / NEON MAC instructions">;
  86
  87 // Cortex-A8 / A9 Advanced SIMD has multiplier accumulator forwarding.
  88 def FeatureVMLxForwarding : SubtargetFeature<"vmlx-forwarding",
  89                                        "HasVMLxForwarding", "true",
  90                                        "Has multiplier accumulator forwarding">;
  91
  92 // Some processors benefit from using NEON instructions for scalar
  93 // single-precision FP operations.
  94 def FeatureNEONForFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP",
  95                                         "true",
  96                                         "Use NEON for single precision FP">;
  97
  98 // Disable 32-bit to 16-bit narrowing for experimentation.
  99 def FeaturePref32BitThumb : SubtargetFeature<"32bit", "Pref32BitThumb", "true",
 100                                              "Prefer 32-bit Thumb instrs">;
 101
 102 /// Some instructions update CPSR partially, which can add false dependency for
 103 /// out-of-order implementation, e.g. Cortex-A9, unless each individual bit is
 104 /// mapped to a separate physical register. Avoid partial CPSR update for these
 105 /// processors.
 106 def FeatureAvoidPartialCPSR : SubtargetFeature<"avoid-partial-cpsr",
 107                                                "AvoidCPSRPartialUpdate", "true",
 108                                  "Avoid CPSR partial update for OOO execution">;
 109
 110 def FeatureAvoidMOVsShOp : SubtargetFeature<"avoid-movs-shop",
 111                                             "AvoidMOVsShifterOperand", "true",
 112                                 "Avoid movs instructions with shifter operand">;
 113
 114 // Some processors perform return stack prediction. CodeGen should avoid issue
 115 // "normal" call instructions to callees which do not return.
 116 def FeatureHasRAS : SubtargetFeature<"ras", "HasRAS", "true",
 117                                      "Has return address stack">;
 118
 119 /// Some M architectures don't have the DSP extension (v7E-M vs. v7M)
 120 def FeatureDSPThumb2 : SubtargetFeature<"t2dsp", "Thumb2DSP", "true",
 121                                  "Supports v7 DSP instructions in Thumb2">;
 122
 123 // Multiprocessing extension.
 124 def FeatureMP : SubtargetFeature<"mp", "HasMPExtension", "true",
 125                                  "Supports Multiprocessing extension">;
 126
 127 // Virtualization extension - requires HW divide (ARMv7-AR ARMARM - 4.4.8).
 128 def FeatureVirtualization : SubtargetFeature<"virtualization",
 129                                  "HasVirtualization", "true",
 130                                  "Supports Virtualization extension",
 131                                  [FeatureHWDiv, FeatureHWDivARM]>;
 132
 133 // M-series ISA
 134 def FeatureMClass : SubtargetFeature<"mclass", "ARMProcClass", "MClass",
 135                                      "Is microcontroller profile ('M' series)">;
 136
 137 // R-series ISA
 138 def FeatureRClass : SubtargetFeature<"rclass", "ARMProcClass", "RClass",
 139                                      "Is realtime profile ('R' series)">;
 140
 141 // A-series ISA
 142 def FeatureAClass : SubtargetFeature<"aclass", "ARMProcClass", "AClass",
 143                                      "Is application profile ('A' series)">;
 144
 145 // Special TRAP encoding for NaCl, which looks like a TRAP in Thumb too.
 146 // See ARMInstrInfo.td for details.
 147 def FeatureNaClTrap : SubtargetFeature<"nacl-trap", "UseNaClTrap", "true",
 148                                        "NaCl trap">;
 149
 150 // ARM ISAs.
 151 def HasV4TOps   : SubtargetFeature<"v4t", "HasV4TOps", "true",
 152                                    "Support ARM v4T instructions">;
 153 def HasV5TOps   : SubtargetFeature<"v5t", "HasV5TOps", "true",
 154                                    "Support ARM v5T instructions",
 155                                    [HasV4TOps]>;
 156 def HasV5TEOps  : SubtargetFeature<"v5te", "HasV5TEOps", "true",
 157                              "Support ARM v5TE, v5TEj, and v5TExp instructions",
 158                                    [HasV5TOps]>;
 159 def HasV6Ops    : SubtargetFeature<"v6", "HasV6Ops", "true",
 160                                    "Support ARM v6 instructions",
 161                                    [HasV5TEOps]>;
 162 def HasV6MOps   : SubtargetFeature<"v6m", "HasV6MOps", "true",
 163                                    "Support ARM v6M instructions",
 164                                    [HasV6Ops]>;
 165 def HasV6KOps   : SubtargetFeature<"v6k", "HasV6KOps", "true",
 166                                    "Support ARM v6k instructions",
 167                                    [HasV6Ops]>;
 168 def HasV6T2Ops  : SubtargetFeature<"v6t2", "HasV6T2Ops", "true",
 169                                    "Support ARM v6t2 instructions",
 170                                    [HasV6MOps, HasV6KOps, FeatureThumb2]>;
 171 def HasV7Ops    : SubtargetFeature<"v7", "HasV7Ops", "true",
 172                                    "Support ARM v7 instructions",
 173                                    [HasV6T2Ops, FeaturePerfMon]>;
 174 def HasV8Ops    : SubtargetFeature<"v8", "HasV8Ops", "true",
 175                                    "Support ARM v8 instructions",
 176                                    [HasV7Ops, FeatureVirtualization,
 177                                     FeatureMP]>;
 178 def HasV8_1aOps : SubtargetFeature<"v8.1a", "HasV8_1aOps", "true",
 179                                    "Support ARM v8.1a instructions",
 180                                    [HasV8Ops, FeatureAClass, FeatureCRC]>;
 181
 182 //===----------------------------------------------------------------------===//
 183 // ARM Processors supported.
 184 //
 185
 186 include "ARMSchedule.td"
 187
 188 // ARM processor families.
 189 def ProcA5      : SubtargetFeature<"a5", "ARMProcFamily", "CortexA5",
 190                                    "Cortex-A5 ARM processors",
 191                                    [FeatureSlowFPBrcc, FeatureHasSlowFPVMLx,
 192                                     FeatureVMLxForwarding, FeatureT2XtPk,
 193                                     FeatureTrustZone, FeatureMP]>;
 194 def ProcA7      : SubtargetFeature<"a7", "ARMProcFamily", "CortexA7",
 195                                    "Cortex-A7 ARM processors",
 196                                    [FeatureSlowFPBrcc, FeatureHasSlowFPVMLx,
 197                                     FeatureVMLxForwarding, FeatureT2XtPk,
 198                                     FeatureVFP4, FeatureMP,
 199                                     FeatureHWDiv, FeatureHWDivARM,
 200                                     FeatureTrustZone, FeatureVirtualization]>;
 201 def ProcA8      : SubtargetFeature<"a8", "ARMProcFamily", "CortexA8",
 202                                    "Cortex-A8 ARM processors",
 203                                    [FeatureSlowFPBrcc, FeatureHasSlowFPVMLx,
 204                                     FeatureVMLxForwarding, FeatureT2XtPk,
 205                                     FeatureTrustZone]>;
 206 def ProcA9      : SubtargetFeature<"a9", "ARMProcFamily", "CortexA9",
 207                                    "Cortex-A9 ARM processors",
 208                                    [FeatureVMLxForwarding,
 209                                     FeatureT2XtPk, FeatureFP16,
 210                                     FeatureAvoidPartialCPSR,
 211                                     FeatureTrustZone]>;
 212 def ProcSwift   : SubtargetFeature<"swift", "ARMProcFamily", "Swift",
 213                                    "Swift ARM processors",
 214                                    [FeatureNEONForFP, FeatureT2XtPk,
 215                                     FeatureVFP4, FeatureMP, FeatureHWDiv,
 216                                     FeatureHWDivARM, FeatureAvoidPartialCPSR,
 217                                     FeatureAvoidMOVsShOp,
 218                                     FeatureHasSlowFPVMLx, FeatureTrustZone]>;
 219 def ProcA12     : SubtargetFeature<"a12", "ARMProcFamily", "CortexA12",
 220                                    "Cortex-A12 ARM processors",
 221                                    [FeatureVMLxForwarding,
 222                                     FeatureT2XtPk, FeatureVFP4,
 223                                     FeatureHWDiv, FeatureHWDivARM,
 224                                     FeatureAvoidPartialCPSR,
 225                                     FeatureVirtualization,
 226                                     FeatureTrustZone]>;
 227
 228
 229 // FIXME: It has not been determined if A15 has these features.
 230 def ProcA15      : SubtargetFeature<"a15", "ARMProcFamily", "CortexA15",
 231                                    "Cortex-A15 ARM processors",
 232                                    [FeatureT2XtPk, FeatureVFP4,
 233                                     FeatureMP, FeatureHWDiv, FeatureHWDivARM,
 234                                     FeatureAvoidPartialCPSR,
 235                                     FeatureTrustZone, FeatureVirtualization]>;
 236
 237 def ProcA17     : SubtargetFeature<"a17", "ARMProcFamily", "CortexA17",
 238                                    "Cortex-A17 ARM processors",
 239                                    [FeatureVMLxForwarding,
 240                                     FeatureT2XtPk, FeatureVFP4,
 241                                     FeatureHWDiv, FeatureHWDivARM,
 242                                     FeatureAvoidPartialCPSR,
 243                                     FeatureVirtualization,
 244                                     FeatureTrustZone]>;
 245
 246 def ProcA53     : SubtargetFeature<"a53", "ARMProcFamily", "CortexA53",
 247                                    "Cortex-A53 ARM processors",
 248                                    [FeatureHWDiv, FeatureHWDivARM,
 249                                     FeatureTrustZone, FeatureT2XtPk,
 250                                     FeatureCrypto, FeatureCRC]>;
 251
 252 def ProcA57     : SubtargetFeature<"a57", "ARMProcFamily", "CortexA57",
 253                                    "Cortex-A57 ARM processors",
 254                                    [FeatureHWDiv, FeatureHWDivARM,
 255                                     FeatureTrustZone, FeatureT2XtPk,
 256                                     FeatureCrypto, FeatureCRC]>;
 257
 258 def ProcR4      : SubtargetFeature<"r4", "ARMProcFamily", "CortexR4",
 259                                    "Cortex-R4 ARM processors",
 260                                    [FeatureHWDiv,
 261                                     FeatureAvoidPartialCPSR,
 262                                     FeatureDSPThumb2, FeatureT2XtPk,
 263                                     HasV7Ops, FeatureDB, FeatureHasRAS,
 264                                     FeatureRClass]>;
 265
 266 def ProcR5      : SubtargetFeature<"r5", "ARMProcFamily", "CortexR5",
 267                                    "Cortex-R5 ARM processors",
 268                                    [FeatureSlowFPBrcc,
 269                                     FeatureHWDiv, FeatureHWDivARM,
 270                                     FeatureHasSlowFPVMLx,
 271                                     FeatureAvoidPartialCPSR,
 272                                     FeatureT2XtPk]>;
 273
 274 // FIXME: krait has currently the same features as A9
 275 // plus VFP4 and hardware division features.
 276 def ProcKrait   : SubtargetFeature<"krait", "ARMProcFamily", "Krait",
 277                                    "Qualcomm ARM processors",
 278                                    [FeatureVMLxForwarding,
 279                                     FeatureT2XtPk, FeatureFP16,
 280                                     FeatureAvoidPartialCPSR,
 281                                     FeatureTrustZone,
 282                                     FeatureVFP4,
 283                                     FeatureHWDiv,
 284                                     FeatureHWDivARM]>;
 285
 286
 287 class ProcNoItin<string Name, list<SubtargetFeature> Features>
 288  : Processor<Name, NoItineraries, Features>;
 289
 290 // V4 Processors.
 291 def : ProcNoItin<"generic",         []>;
 292 def : ProcNoItin<"arm8",            []>;
 293 def : ProcNoItin<"arm810",          []>;
 294 def : ProcNoItin<"strongarm",       []>;
 295 def : ProcNoItin<"strongarm110",    []>;
 296 def : ProcNoItin<"strongarm1100",   []>;
 297 def : ProcNoItin<"strongarm1110",   []>;
 298
 299 // V4T Processors.
 300 def : ProcNoItin<"arm7tdmi",        [HasV4TOps]>;
 301 def : ProcNoItin<"arm7tdmi-s",      [HasV4TOps]>;
 302 def : ProcNoItin<"arm710t",         [HasV4TOps]>;
 303 def : ProcNoItin<"arm720t",         [HasV4TOps]>;
 304 def : ProcNoItin<"arm9",            [HasV4TOps]>;
 305 def : ProcNoItin<"arm9tdmi",        [HasV4TOps]>;
 306 def : ProcNoItin<"arm920",          [HasV4TOps]>;
 307 def : ProcNoItin<"arm920t",         [HasV4TOps]>;
 308 def : ProcNoItin<"arm922t",         [HasV4TOps]>;
 309 def : ProcNoItin<"arm940t",         [HasV4TOps]>;
 310 def : ProcNoItin<"ep9312",          [HasV4TOps]>;
 311
 312 // V5T Processors.
 313 def : ProcNoItin<"arm10tdmi",       [HasV5TOps]>;
 314 def : ProcNoItin<"arm1020t",        [HasV5TOps]>;
 315
 316 // V5TE Processors.
 317 def : ProcNoItin<"arm9e",           [HasV5TEOps]>;
 318 def : ProcNoItin<"arm926ej-s",      [HasV5TEOps]>;
 319 def : ProcNoItin<"arm946e-s",       [HasV5TEOps]>;
 320 def : ProcNoItin<"arm966e-s",       [HasV5TEOps]>;
 321 def : ProcNoItin<"arm968e-s",       [HasV5TEOps]>;
 322 def : ProcNoItin<"arm10e",          [HasV5TEOps]>;
 323 def : ProcNoItin<"arm1020e",        [HasV5TEOps]>;
 324 def : ProcNoItin<"arm1022e",        [HasV5TEOps]>;
 325 def : ProcNoItin<"xscale",          [HasV5TEOps]>;
 326 def : ProcNoItin<"iwmmxt",          [HasV5TEOps]>;
 327
 328 // V6 Processors.
 329 def : Processor<"arm1136j-s",       ARMV6Itineraries, [HasV6Ops]>;
 330 def : Processor<"arm1136jf-s",      ARMV6Itineraries, [HasV6Ops, FeatureVFP2,
 331                                                        FeatureHasSlowFPVMLx]>;
 332
 333 // V6M Processors.
 334 def : Processor<"cortex-m0",        ARMV6Itineraries, [HasV6MOps, FeatureNoARM,
 335                                                        FeatureDB, FeatureMClass]>;
 336 def : Processor<"cortex-m0plus",    ARMV6Itineraries, [HasV6MOps, FeatureNoARM,
 337                                                        FeatureDB, FeatureMClass]>;
 338 def : Processor<"cortex-m1",        ARMV6Itineraries, [HasV6MOps, FeatureNoARM,
 339                                                        FeatureDB, FeatureMClass]>;
 340 def : Processor<"sc000",            ARMV6Itineraries, [HasV6MOps, FeatureNoARM,
 341                                                        FeatureDB, FeatureMClass]>;
 342
 343 // V6K Processors.
 344 def : Processor<"arm1176jz-s",      ARMV6Itineraries, [HasV6KOps]>;
 345 def : Processor<"arm1176jzf-s",     ARMV6Itineraries, [HasV6KOps, FeatureVFP2,
 346                                                        FeatureHasSlowFPVMLx]>;
 347 def : Processor<"mpcorenovfp",      ARMV6Itineraries, [HasV6KOps]>;
 348 def : Processor<"mpcore",           ARMV6Itineraries, [HasV6KOps, FeatureVFP2,
 349                                                        FeatureHasSlowFPVMLx]>;
 350
 351 // V6T2 Processors.
 352 def : Processor<"arm1156t2-s",      ARMV6Itineraries, [HasV6T2Ops,
 353                                                        FeatureDSPThumb2]>;
 354 def : Processor<"arm1156t2f-s",     ARMV6Itineraries, [HasV6T2Ops, FeatureVFP2,
 355                                                        FeatureHasSlowFPVMLx,
 356                                                        FeatureDSPThumb2]>;
 357
 358 // V7a Processors.
 359 // FIXME: A5 has currently the same Schedule model as A8
 360 def : ProcessorModel<"cortex-a5",   CortexA8Model,
 361                                     [ProcA5, HasV7Ops, FeatureNEON, FeatureDB,
 362                                      FeatureVFP4, FeatureDSPThumb2,
 363                                      FeatureHasRAS, FeatureAClass]>;
 364 def : ProcessorModel<"cortex-a7",   CortexA8Model,
 365                                     [ProcA7, HasV7Ops, FeatureNEON, FeatureDB,
 366                                      FeatureDSPThumb2, FeatureHasRAS,
 367                                      FeatureAClass]>;
 368 def : ProcessorModel<"cortex-a8",   CortexA8Model,
 369                                     [ProcA8, HasV7Ops, FeatureNEON, FeatureDB,
 370                                      FeatureDSPThumb2, FeatureHasRAS,
 371                                      FeatureAClass]>;
 372 def : ProcessorModel<"cortex-a9",   CortexA9Model,
 373                                     [ProcA9, HasV7Ops, FeatureNEON, FeatureDB,
 374                                      FeatureDSPThumb2, FeatureHasRAS, FeatureMP,
 375                                      FeatureAClass]>;
 376
 377 // FIXME: A12 has currently the same Schedule model as A9
 378 def : ProcessorModel<"cortex-a12", CortexA9Model,
 379                                     [ProcA12, HasV7Ops, FeatureNEON, FeatureDB,
 380                                      FeatureDSPThumb2, FeatureMP,
 381                                      FeatureHasRAS, FeatureAClass]>;
 382
 383 // FIXME: A15 has currently the same ProcessorModel as A9.
 384 def : ProcessorModel<"cortex-a15",   CortexA9Model,
 385                                     [ProcA15, HasV7Ops, FeatureNEON, FeatureDB,
 386                                      FeatureDSPThumb2, FeatureHasRAS,
 387                                      FeatureAClass]>;
 388
 389 // FIXME: A17 has currently the same Schedule model as A9
 390 def : ProcessorModel<"cortex-a17",  CortexA9Model,
 391                                     [ProcA17, HasV7Ops, FeatureNEON, FeatureDB,
 392                                      FeatureDSPThumb2, FeatureMP,
 393                                      FeatureHasRAS, FeatureAClass]>;
 394
 395 // FIXME: krait has currently the same Schedule model as A9
 396 def : ProcessorModel<"krait",       CortexA9Model,
 397                                     [ProcKrait, HasV7Ops,
 398                                      FeatureNEON, FeatureDB,
 399                                      FeatureDSPThumb2, FeatureHasRAS,
 400                                      FeatureAClass]>;
 401
 402 // FIXME: R4 has currently the same ProcessorModel as A8.
 403 def : ProcessorModel<"cortex-r4",   CortexA8Model,
 404                                     [ProcR4]>;
 405
 406 // FIXME: R4F has currently the same ProcessorModel as A8.
 407 def : ProcessorModel<"cortex-r4f",  CortexA8Model,
 408                                     [ProcR4,
 409                                      FeatureSlowFPBrcc, FeatureHasSlowFPVMLx,
 410                                      FeatureVFP3, FeatureVFPOnlySP, FeatureD16]>;
 411
 412 // FIXME: R5 has currently the same ProcessorModel as A8.
 413 def : ProcessorModel<"cortex-r5",   CortexA8Model,
 414                                     [ProcR5, HasV7Ops, FeatureDB,
 415                                      FeatureVFP3, FeatureDSPThumb2,
 416                                      FeatureHasRAS, FeatureVFPOnlySP,
 417                                      FeatureD16, FeatureRClass]>;
 418
 419 // FIXME: R7 has currently the same ProcessorModel as A8 and is modelled as R5.
 420 def : ProcessorModel<"cortex-r7",   CortexA8Model,
 421                                     [ProcR5, HasV7Ops, FeatureDB,
 422                                      FeatureVFP3, FeatureDSPThumb2,
 423                                      FeatureHasRAS, FeatureVFPOnlySP,
 424                                      FeatureD16, FeatureMP, FeatureRClass]>;
 425
 426 // V7M Processors.
 427 def : ProcNoItin<"cortex-m3",       [HasV7Ops,
 428                                      FeatureThumb2, FeatureNoARM, FeatureDB,
 429                                      FeatureHWDiv, FeatureMClass]>;
 430 def : ProcNoItin<"sc300",           [HasV7Ops,
 431                                      FeatureThumb2, FeatureNoARM, FeatureDB,
 432                                      FeatureHWDiv, FeatureMClass]>;
 433
 434 // V7EM Processors.
 435 def : ProcNoItin<"cortex-m4",       [HasV7Ops,
 436                                      FeatureThumb2, FeatureNoARM, FeatureDB,
 437                                      FeatureHWDiv, FeatureDSPThumb2,
 438                                      FeatureT2XtPk, FeatureVFP4,
 439                                      FeatureVFPOnlySP, FeatureD16,
 440                                      FeatureMClass]>;
 441 def : ProcNoItin<"cortex-m7",       [HasV7Ops,
 442                                      FeatureThumb2, FeatureNoARM, FeatureDB,
 443                                      FeatureHWDiv, FeatureDSPThumb2,
 444                                      FeatureT2XtPk, FeatureFPARMv8,
 445                                      FeatureD16, FeatureMClass]>;
 446
 447
 448 // Swift uArch Processors.
 449 def : ProcessorModel<"swift",       SwiftModel,
 450                                     [ProcSwift, HasV7Ops, FeatureNEON,
 451                                      FeatureDB, FeatureDSPThumb2,
 452                                      FeatureHasRAS, FeatureAClass]>;
 453
 454 // V8 Processors
 455 def : ProcNoItin<"cortex-a53",      [ProcA53, HasV8Ops, FeatureAClass,
 456                                     FeatureDB, FeatureFPARMv8,
 457                                     FeatureNEON, FeatureDSPThumb2]>;
 458 def : ProcNoItin<"cortex-a57",      [ProcA57, HasV8Ops, FeatureAClass,
 459                                     FeatureDB, FeatureFPARMv8,
 460                                     FeatureNEON, FeatureDSPThumb2]>;
 461 // FIXME: Cortex-A72 is currently modelled as an Cortex-A57.
 462 def : ProcNoItin<"cortex-a72",      [ProcA57, HasV8Ops, FeatureAClass,
 463                                     FeatureDB, FeatureFPARMv8,
 464                                     FeatureNEON, FeatureDSPThumb2]>;
 465
 466 // Cyclone is very similar to swift
 467 def : ProcessorModel<"cyclone",     SwiftModel,
 468                                     [ProcSwift, HasV8Ops, HasV7Ops,
 469                                      FeatureCrypto, FeatureFPARMv8,
 470                                      FeatureDB,FeatureDSPThumb2,
 471                                      FeatureHasRAS, FeatureZCZeroing]>;
 472
 473 //===----------------------------------------------------------------------===//
 474 // Register File Description
 475 //===----------------------------------------------------------------------===//
 476
 477 include "ARMRegisterInfo.td"
 478
 479 include "ARMCallingConv.td"
 480
 481 //===----------------------------------------------------------------------===//
 482 // Instruction Descriptions
 483 //===----------------------------------------------------------------------===//
 484
 485 include "ARMInstrInfo.td"
 486
 487 def ARMInstrInfo : InstrInfo;
 488
 489 //===----------------------------------------------------------------------===//
 490 // Declare the target which we are implementing
 491 //===----------------------------------------------------------------------===//
 492
 493 def ARMAsmWriter : AsmWriter {
 494   string AsmWriterClassName  = "InstPrinter";
 495   int PassSubtarget = 1;
 496   int Variant = 0;
 497   bit isMCAsmWriter = 1;
 498 }
 499
 500 def ARM : Target {
 501   // Pull in Instruction Info:
 502   let InstructionSet = ARMInstrInfo;
 503   let AssemblyWriters = [ARMAsmWriter];
 504 }