lib/Target/PowerPC/PPC.td

   1 //===-- PPC.td - Describe the PowerPC 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 // This is the top level entry point for the PowerPC target.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 // Get the target-independent interfaces which we are implementing.
  15 //
  16 include "llvm/Target/Target.td"
  17
  18 //===----------------------------------------------------------------------===//
  19 // PowerPC Subtarget features.
  20 //
  21
  22 //===----------------------------------------------------------------------===//
  23 // CPU Directives                                                             //
  24 //===----------------------------------------------------------------------===//
  25
  26 def Directive440 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_440", "">;
  27 def Directive601 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_601", "">;
  28 def Directive602 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_602", "">;
  29 def Directive603 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
  30 def Directive604 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
  31 def Directive620 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
  32 def Directive7400: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_7400", "">;
  33 def Directive750 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_750", "">;
  34 def Directive970 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_970", "">;
  35 def Directive32  : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_32", "">;
  36 def Directive64  : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_64", "">;
  37 def DirectiveA2  : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_A2", "">;
  38 def DirectiveE500mc : SubtargetFeature<"", "DarwinDirective",
  39                                        "PPC::DIR_E500mc", "">;
  40 def DirectiveE5500  : SubtargetFeature<"", "DarwinDirective",
  41                                        "PPC::DIR_E5500", "">;
  42 def DirectivePwr3: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR3", "">;
  43 def DirectivePwr4: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR4", "">;
  44 def DirectivePwr5: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR5", "">;
  45 def DirectivePwr5x: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR5X", "">;
  46 def DirectivePwr6: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR6", "">;
  47 def DirectivePwr6x: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR6X", "">;
  48 def DirectivePwr7: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR7", "">;
  49 def DirectivePwr8: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_PWR8", "">;
  50
  51 def Feature64Bit     : SubtargetFeature<"64bit","Has64BitSupport", "true",
  52                                         "Enable 64-bit instructions">;
  53 def Feature64BitRegs : SubtargetFeature<"64bitregs","Use64BitRegs", "true",
  54                               "Enable 64-bit registers usage for ppc32 [beta]">;
  55 def FeatureCRBits    : SubtargetFeature<"crbits", "UseCRBits", "true",
  56                               "Use condition-register bits individually">;
  57 def FeatureAltivec   : SubtargetFeature<"altivec","HasAltivec", "true",
  58                                         "Enable Altivec instructions">;
  59 def FeatureMFOCRF    : SubtargetFeature<"mfocrf","HasMFOCRF", "true",
  60                                         "Enable the MFOCRF instruction">;
  61 def FeatureFSqrt     : SubtargetFeature<"fsqrt","HasFSQRT", "true",
  62                                         "Enable the fsqrt instruction">;
  63 def FeatureFCPSGN    : SubtargetFeature<"fcpsgn", "HasFCPSGN", "true",
  64                                         "Enable the fcpsgn instruction">;
  65 def FeatureFRE       : SubtargetFeature<"fre", "HasFRE", "true",
  66                                         "Enable the fre instruction">;
  67 def FeatureFRES      : SubtargetFeature<"fres", "HasFRES", "true",
  68                                         "Enable the fres instruction">;
  69 def FeatureFRSQRTE   : SubtargetFeature<"frsqrte", "HasFRSQRTE", "true",
  70                                         "Enable the frsqrte instruction">;
  71 def FeatureFRSQRTES  : SubtargetFeature<"frsqrtes", "HasFRSQRTES", "true",
  72                                         "Enable the frsqrtes instruction">;
  73 def FeatureRecipPrec : SubtargetFeature<"recipprec", "HasRecipPrec", "true",
  74                               "Assume higher precision reciprocal estimates">;
  75 def FeatureSTFIWX    : SubtargetFeature<"stfiwx","HasSTFIWX", "true",
  76                                         "Enable the stfiwx instruction">;
  77 def FeatureLFIWAX    : SubtargetFeature<"lfiwax","HasLFIWAX", "true",
  78                                         "Enable the lfiwax instruction">;
  79 def FeatureFPRND     : SubtargetFeature<"fprnd", "HasFPRND", "true",
  80                                         "Enable the fri[mnpz] instructions">;
  81 def FeatureFPCVT     : SubtargetFeature<"fpcvt", "HasFPCVT", "true",
  82   "Enable fc[ft]* (unsigned and single-precision) and lfiwzx instructions">;
  83 def FeatureISEL      : SubtargetFeature<"isel","HasISEL", "true",
  84                                         "Enable the isel instruction">;
  85 def FeaturePOPCNTD   : SubtargetFeature<"popcntd","HasPOPCNTD", "true",
  86                                         "Enable the popcnt[dw] instructions">;
  87 def FeatureLDBRX     : SubtargetFeature<"ldbrx","HasLDBRX", "true",
  88                                         "Enable the ldbrx instruction">;
  89 def FeatureBookE     : SubtargetFeature<"booke", "IsBookE", "true",
  90                                         "Enable Book E instructions">;
  91 def FeatureE500      : SubtargetFeature<"E500", "IsE500", "true",
  92                                         "Enable E500/E500mc instructions">;
  93 def FeaturePPC4xx    : SubtargetFeature<"ppc4xx", "IsPPC4xx", "true",
  94                                         "Enable PPC 4xx instructions">;
  95 def FeatureQPX       : SubtargetFeature<"qpx","HasQPX", "true",
  96                                         "Enable QPX instructions">;
  97 def FeatureVSX       : SubtargetFeature<"vsx","HasVSX", "true",
  98                                         "Enable VSX instructions",
  99                                         [FeatureAltivec]>;
 100
 101 def DeprecatedMFTB   : SubtargetFeature<"", "DeprecatedMFTB", "true",
 102                                         "Treat mftb as deprecated">;
 103 def DeprecatedDST    : SubtargetFeature<"", "DeprecatedDST", "true",
 104   "Treat vector data stream cache control instructions as deprecated">;
 105
 106 // Note: Future features to add when support is extended to more
 107 // recent ISA levels:
 108 //
 109 // CMPB         p6, p6x, p7        cmpb
 110 // DFP          p6, p6x, p7        decimal floating-point instructions
 111 // POPCNTB      p5 through p7      popcntb and related instructions
 112 // VSX          p7                 vector-scalar instruction set
 113
 114 //===----------------------------------------------------------------------===//
 115 // ABI Selection                                                              //
 116 //===----------------------------------------------------------------------===//
 117
 118 def FeatureELFv1 : SubtargetFeature<"elfv1", "TargetABI", "PPC_ABI_ELFv1",
 119                                     "Use the ELFv1 ABI">;
 120
 121 def FeatureELFv2 : SubtargetFeature<"elfv2", "TargetABI", "PPC_ABI_ELFv2",
 122                                     "Use the ELFv2 ABI">;
 123
 124 //===----------------------------------------------------------------------===//
 125 // Classes used for relation maps.
 126 //===----------------------------------------------------------------------===//
 127 // RecFormRel - Filter class used to relate non-record-form instructions with
 128 // their record-form variants.
 129 class RecFormRel;
 130
 131 // AltVSXFMARel - Filter class used to relate the primary addend-killing VSX
 132 // FMA instruction forms with their corresponding factor-killing forms.
 133 class AltVSXFMARel {
 134   bit IsVSXFMAAlt = 0;
 135 }
 136
 137 //===----------------------------------------------------------------------===//
 138 // Relation Map Definitions.
 139 //===----------------------------------------------------------------------===//
 140
 141 def getRecordFormOpcode : InstrMapping {
 142   let FilterClass = "RecFormRel";
 143   // Instructions with the same BaseName and Interpretation64Bit values
 144   // form a row.
 145   let RowFields = ["BaseName", "Interpretation64Bit"];
 146   // Instructions with the same RC value form a column.
 147   let ColFields = ["RC"];
 148   // The key column are the non-record-form instructions.
 149   let KeyCol = ["0"];
 150   // Value columns RC=1
 151   let ValueCols = [["1"]];
 152 }
 153
 154 def getNonRecordFormOpcode : InstrMapping {
 155   let FilterClass = "RecFormRel";
 156   // Instructions with the same BaseName and Interpretation64Bit values
 157   // form a row.
 158   let RowFields = ["BaseName", "Interpretation64Bit"];
 159   // Instructions with the same RC value form a column.
 160   let ColFields = ["RC"];
 161   // The key column are the record-form instructions.
 162   let KeyCol = ["1"];
 163   // Value columns are RC=0
 164   let ValueCols = [["0"]];
 165 }
 166
 167 def getAltVSXFMAOpcode : InstrMapping {
 168   let FilterClass = "AltVSXFMARel";
 169   // Instructions with the same BaseName and Interpretation64Bit values
 170   // form a row.
 171   let RowFields = ["BaseName"];
 172   // Instructions with the same RC value form a column.
 173   let ColFields = ["IsVSXFMAAlt"];
 174   // The key column are the (default) addend-killing instructions.
 175   let KeyCol = ["0"];
 176   // Value columns IsVSXFMAAlt=1
 177   let ValueCols = [["1"]];
 178 }
 179
 180 //===----------------------------------------------------------------------===//
 181 // Register File Description
 182 //===----------------------------------------------------------------------===//
 183
 184 include "PPCRegisterInfo.td"
 185 include "PPCSchedule.td"
 186 include "PPCInstrInfo.td"
 187
 188 //===----------------------------------------------------------------------===//
 189 // PowerPC processors supported.
 190 //
 191
 192 def : Processor<"generic", G3Itineraries, [Directive32]>;
 193 def : ProcessorModel<"440", PPC440Model, [Directive440, FeatureISEL,
 194                                           FeatureFRES, FeatureFRSQRTE,
 195                                           FeatureBookE, DeprecatedMFTB]>;
 196 def : ProcessorModel<"450", PPC440Model, [Directive440, FeatureISEL,
 197                                           FeatureFRES, FeatureFRSQRTE,
 198                                           FeatureBookE, DeprecatedMFTB]>;
 199 def : Processor<"601", G3Itineraries, [Directive601]>;
 200 def : Processor<"602", G3Itineraries, [Directive602]>;
 201 def : Processor<"603", G3Itineraries, [Directive603,
 202                                        FeatureFRES, FeatureFRSQRTE]>;
 203 def : Processor<"603e", G3Itineraries, [Directive603,
 204                                         FeatureFRES, FeatureFRSQRTE]>;
 205 def : Processor<"603ev", G3Itineraries, [Directive603,
 206                                          FeatureFRES, FeatureFRSQRTE]>;
 207 def : Processor<"604", G3Itineraries, [Directive604,
 208                                        FeatureFRES, FeatureFRSQRTE]>;
 209 def : Processor<"604e", G3Itineraries, [Directive604,
 210                                         FeatureFRES, FeatureFRSQRTE]>;
 211 def : Processor<"620", G3Itineraries, [Directive620,
 212                                        FeatureFRES, FeatureFRSQRTE]>;
 213 def : Processor<"750", G4Itineraries, [Directive750,
 214                                        FeatureFRES, FeatureFRSQRTE]>;
 215 def : Processor<"g3", G3Itineraries, [Directive750,
 216                                       FeatureFRES, FeatureFRSQRTE]>;
 217 def : Processor<"7400", G4Itineraries, [Directive7400, FeatureAltivec,
 218                                         FeatureFRES, FeatureFRSQRTE]>;
 219 def : Processor<"g4", G4Itineraries, [Directive7400, FeatureAltivec,
 220                                       FeatureFRES, FeatureFRSQRTE]>;
 221 def : Processor<"7450", G4PlusItineraries, [Directive7400, FeatureAltivec,
 222                                             FeatureFRES, FeatureFRSQRTE]>;
 223 def : Processor<"g4+", G4PlusItineraries, [Directive7400, FeatureAltivec,
 224                                            FeatureFRES, FeatureFRSQRTE]>;
 225 def : ProcessorModel<"970", G5Model,
 226                   [Directive970, FeatureAltivec,
 227                    FeatureMFOCRF, FeatureFSqrt,
 228                    FeatureFRES, FeatureFRSQRTE, FeatureSTFIWX,
 229                    Feature64Bit /*, Feature64BitRegs */]>;
 230 def : ProcessorModel<"g5", G5Model,
 231                   [Directive970, FeatureAltivec,
 232                    FeatureMFOCRF, FeatureFSqrt, FeatureSTFIWX,
 233                    FeatureFRES, FeatureFRSQRTE,
 234                    Feature64Bit /*, Feature64BitRegs */,
 235                    DeprecatedMFTB, DeprecatedDST]>;
 236 def : ProcessorModel<"e500mc", PPCE500mcModel,
 237                   [DirectiveE500mc, FeatureMFOCRF,
 238                    FeatureSTFIWX, FeatureBookE, FeatureISEL,
 239                    DeprecatedMFTB]>;
 240 def : ProcessorModel<"e5500", PPCE5500Model,
 241                   [DirectiveE5500, FeatureMFOCRF, Feature64Bit,
 242                    FeatureSTFIWX, FeatureBookE, FeatureISEL,
 243                    DeprecatedMFTB]>;
 244 def : ProcessorModel<"a2", PPCA2Model,
 245                   [DirectiveA2, FeatureBookE, FeatureMFOCRF,
 246                    FeatureFCPSGN, FeatureFSqrt, FeatureFRE, FeatureFRES,
 247                    FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
 248                    FeatureSTFIWX, FeatureLFIWAX,
 249                    FeatureFPRND, FeatureFPCVT, FeatureISEL,
 250                    FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
 251                /*, Feature64BitRegs */, DeprecatedMFTB]>;
 252 def : ProcessorModel<"a2q", PPCA2Model,
 253                   [DirectiveA2, FeatureBookE, FeatureMFOCRF,
 254                    FeatureFCPSGN, FeatureFSqrt, FeatureFRE, FeatureFRES,
 255                    FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
 256                    FeatureSTFIWX, FeatureLFIWAX,
 257                    FeatureFPRND, FeatureFPCVT, FeatureISEL,
 258                    FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
 259                /*, Feature64BitRegs */, FeatureQPX, DeprecatedMFTB]>;
 260 def : ProcessorModel<"pwr3", G5Model,
 261                   [DirectivePwr3, FeatureAltivec,
 262                    FeatureFRES, FeatureFRSQRTE, FeatureMFOCRF,
 263                    FeatureSTFIWX, Feature64Bit]>;
 264 def : ProcessorModel<"pwr4", G5Model,
 265                   [DirectivePwr4, FeatureAltivec, FeatureMFOCRF,
 266                    FeatureFSqrt, FeatureFRES, FeatureFRSQRTE,
 267                    FeatureSTFIWX, Feature64Bit]>;
 268 def : ProcessorModel<"pwr5", G5Model,
 269                   [DirectivePwr5, FeatureAltivec, FeatureMFOCRF,
 270                    FeatureFSqrt, FeatureFRE, FeatureFRES,
 271                    FeatureFRSQRTE, FeatureFRSQRTES,
 272                    FeatureSTFIWX, Feature64Bit,
 273                    DeprecatedMFTB, DeprecatedDST]>;
 274 def : ProcessorModel<"pwr5x", G5Model,
 275                   [DirectivePwr5x, FeatureAltivec, FeatureMFOCRF,
 276                    FeatureFSqrt, FeatureFRE, FeatureFRES,
 277                    FeatureFRSQRTE, FeatureFRSQRTES,
 278                    FeatureSTFIWX, FeatureFPRND, Feature64Bit,
 279                    DeprecatedMFTB, DeprecatedDST]>;
 280 def : ProcessorModel<"pwr6", G5Model,
 281                   [DirectivePwr6, FeatureAltivec,
 282                    FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
 283                    FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
 284                    FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
 285                    FeatureFPRND, Feature64Bit /*, Feature64BitRegs */,
 286                    DeprecatedMFTB, DeprecatedDST]>;
 287 def : ProcessorModel<"pwr6x", G5Model,
 288                   [DirectivePwr5x, FeatureAltivec, FeatureMFOCRF,
 289                    FeatureFCPSGN, FeatureFSqrt, FeatureFRE, FeatureFRES,
 290                    FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
 291                    FeatureSTFIWX, FeatureLFIWAX,
 292                    FeatureFPRND, Feature64Bit,
 293                    DeprecatedMFTB, DeprecatedDST]>;
 294 def : ProcessorModel<"pwr7", P7Model,
 295                   [DirectivePwr7, FeatureAltivec,
 296                    FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
 297                    FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
 298                    FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
 299                    FeatureFPRND, FeatureFPCVT, FeatureISEL,
 300                    FeaturePOPCNTD, FeatureLDBRX,
 301                    Feature64Bit /*, Feature64BitRegs */,
 302                    DeprecatedMFTB, DeprecatedDST]>;
 303 def : ProcessorModel<"pwr8", P7Model /* FIXME: Update to P8Model when available */,
 304                   [DirectivePwr8, FeatureAltivec,
 305                    FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
 306                    FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
 307                    FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
 308                    FeatureFPRND, FeatureFPCVT, FeatureISEL,
 309                    FeaturePOPCNTD, FeatureLDBRX,
 310                    Feature64Bit /*, Feature64BitRegs */,
 311                    DeprecatedMFTB, DeprecatedDST]>;
 312 def : Processor<"ppc", G3Itineraries, [Directive32]>;
 313 def : ProcessorModel<"ppc64", G5Model,
 314                   [Directive64, FeatureAltivec,
 315                    FeatureMFOCRF, FeatureFSqrt, FeatureFRES,
 316                    FeatureFRSQRTE, FeatureSTFIWX,
 317                    Feature64Bit /*, Feature64BitRegs */]>;
 318 def : ProcessorModel<"ppc64le", G5Model,
 319                   [Directive64, FeatureAltivec,
 320                    FeatureMFOCRF, FeatureFSqrt, FeatureFRES,
 321                    FeatureFRSQRTE, FeatureSTFIWX,
 322                    Feature64Bit /*, Feature64BitRegs */]>;
 323
 324 //===----------------------------------------------------------------------===//
 325 // Calling Conventions
 326 //===----------------------------------------------------------------------===//
 327
 328 include "PPCCallingConv.td"
 329
 330 def PPCInstrInfo : InstrInfo {
 331   let isLittleEndianEncoding = 1;
 332
 333   // FIXME: Unset this when no longer needed!
 334   let decodePositionallyEncodedOperands = 1;
 335
 336   let noNamedPositionallyEncodedOperands = 1;
 337 }
 338
 339 def PPCAsmParser : AsmParser {
 340   let ShouldEmitMatchRegisterName = 0;
 341 }
 342
 343 def PPCAsmParserVariant : AsmParserVariant {
 344   int Variant = 0;
 345
 346   // We do not use hard coded registers in asm strings.  However, some
 347   // InstAlias definitions use immediate literals.  Set RegisterPrefix
 348   // so that those are not misinterpreted as registers.
 349   string RegisterPrefix = "%";
 350 }
 351
 352 def PPC : Target {
 353   // Information about the instructions.
 354   let InstructionSet = PPCInstrInfo;
 355
 356   let AssemblyParsers = [PPCAsmParser];
 357   let AssemblyParserVariants = [PPCAsmParserVariant];
 358 }