Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1 | //===- NeonEmitter.cpp - Generate arm_neon.h for use with clang -*- C++ -*-===// |
| 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 tablegen backend is responsible for emitting arm_neon.h, which includes |
| 11 | // a declaration and definition of each function specified by the ARM NEON |
| 12 | // compiler interface. See ARM document DUI0348B. |
| 13 | // |
| 14 | // Each NEON instruction is implemented in terms of 1 or more functions which |
| 15 | // are suffixed with the element type of the input vectors. Functions may be |
| 16 | // implemented in terms of generic vector operations such as +, *, -, etc. or |
| 17 | // by calling a __builtin_-prefixed function which will be handled by clang's |
| 18 | // CodeGen library. |
| 19 | // |
| 20 | // Additional validation code can be generated by this file when runHeader() is |
| 21 | // called, rather than the normal run() entry point. A complete set of tests |
| 22 | // for Neon intrinsics can be generated by calling the runTests() entry point. |
| 23 | // |
| 24 | //===----------------------------------------------------------------------===// |
| 25 | |
Jakob Stoklund Olesen | 3cc509b | 2012-06-13 05:12:41 +0000 | [diff] [blame] | 26 | #include "llvm/ADT/DenseMap.h" |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 27 | #include "llvm/ADT/SmallString.h" |
| 28 | #include "llvm/ADT/SmallVector.h" |
| 29 | #include "llvm/ADT/StringExtras.h" |
Jakob Stoklund Olesen | 3cc509b | 2012-06-13 05:12:41 +0000 | [diff] [blame] | 30 | #include "llvm/ADT/StringMap.h" |
David Blaikie | 7530c03 | 2012-01-17 06:56:22 +0000 | [diff] [blame] | 31 | #include "llvm/Support/ErrorHandling.h" |
Jakob Stoklund Olesen | 3cc509b | 2012-06-13 05:12:41 +0000 | [diff] [blame] | 32 | #include "llvm/TableGen/Error.h" |
| 33 | #include "llvm/TableGen/Record.h" |
| 34 | #include "llvm/TableGen/TableGenBackend.h" |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 35 | #include <string> |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 36 | using namespace llvm; |
| 37 | |
Jakob Stoklund Olesen | 3cc509b | 2012-06-13 05:12:41 +0000 | [diff] [blame] | 38 | enum OpKind { |
| 39 | OpNone, |
| 40 | OpUnavailable, |
| 41 | OpAdd, |
| 42 | OpAddl, |
| 43 | OpAddw, |
| 44 | OpSub, |
| 45 | OpSubl, |
| 46 | OpSubw, |
| 47 | OpMul, |
| 48 | OpMla, |
| 49 | OpMlal, |
| 50 | OpMls, |
| 51 | OpMlsl, |
| 52 | OpMulN, |
| 53 | OpMlaN, |
| 54 | OpMlsN, |
| 55 | OpMlalN, |
| 56 | OpMlslN, |
| 57 | OpMulLane, |
| 58 | OpMullLane, |
| 59 | OpMlaLane, |
| 60 | OpMlsLane, |
| 61 | OpMlalLane, |
| 62 | OpMlslLane, |
| 63 | OpQDMullLane, |
| 64 | OpQDMlalLane, |
| 65 | OpQDMlslLane, |
| 66 | OpQDMulhLane, |
| 67 | OpQRDMulhLane, |
| 68 | OpEq, |
| 69 | OpGe, |
| 70 | OpLe, |
| 71 | OpGt, |
| 72 | OpLt, |
| 73 | OpNeg, |
| 74 | OpNot, |
| 75 | OpAnd, |
| 76 | OpOr, |
| 77 | OpXor, |
| 78 | OpAndNot, |
| 79 | OpOrNot, |
| 80 | OpCast, |
| 81 | OpConcat, |
| 82 | OpDup, |
| 83 | OpDupLane, |
| 84 | OpHi, |
| 85 | OpLo, |
| 86 | OpSelect, |
| 87 | OpRev16, |
| 88 | OpRev32, |
| 89 | OpRev64, |
| 90 | OpReinterpret, |
| 91 | OpAbdl, |
| 92 | OpAba, |
| 93 | OpAbal |
| 94 | }; |
| 95 | |
| 96 | enum ClassKind { |
| 97 | ClassNone, |
| 98 | ClassI, // generic integer instruction, e.g., "i8" suffix |
| 99 | ClassS, // signed/unsigned/poly, e.g., "s8", "u8" or "p8" suffix |
| 100 | ClassW, // width-specific instruction, e.g., "8" suffix |
| 101 | ClassB // bitcast arguments with enum argument to specify type |
| 102 | }; |
| 103 | |
| 104 | /// NeonTypeFlags - Flags to identify the types for overloaded Neon |
| 105 | /// builtins. These must be kept in sync with the flags in |
| 106 | /// include/clang/Basic/TargetBuiltins.h. |
| 107 | namespace { |
| 108 | class NeonTypeFlags { |
| 109 | enum { |
| 110 | EltTypeMask = 0xf, |
| 111 | UnsignedFlag = 0x10, |
| 112 | QuadFlag = 0x20 |
| 113 | }; |
| 114 | uint32_t Flags; |
| 115 | |
| 116 | public: |
| 117 | enum EltType { |
| 118 | Int8, |
| 119 | Int16, |
| 120 | Int32, |
| 121 | Int64, |
| 122 | Poly8, |
| 123 | Poly16, |
| 124 | Float16, |
| 125 | Float32 |
| 126 | }; |
| 127 | |
| 128 | NeonTypeFlags(unsigned F) : Flags(F) {} |
| 129 | NeonTypeFlags(EltType ET, bool IsUnsigned, bool IsQuad) : Flags(ET) { |
| 130 | if (IsUnsigned) |
| 131 | Flags |= UnsignedFlag; |
| 132 | if (IsQuad) |
| 133 | Flags |= QuadFlag; |
| 134 | } |
| 135 | |
| 136 | uint32_t getFlags() const { return Flags; } |
| 137 | }; |
| 138 | } // end anonymous namespace |
| 139 | |
| 140 | namespace { |
| 141 | class NeonEmitter { |
| 142 | RecordKeeper &Records; |
| 143 | StringMap<OpKind> OpMap; |
| 144 | DenseMap<Record*, ClassKind> ClassMap; |
| 145 | |
| 146 | public: |
| 147 | NeonEmitter(RecordKeeper &R) : Records(R) { |
| 148 | OpMap["OP_NONE"] = OpNone; |
| 149 | OpMap["OP_UNAVAILABLE"] = OpUnavailable; |
| 150 | OpMap["OP_ADD"] = OpAdd; |
| 151 | OpMap["OP_ADDL"] = OpAddl; |
| 152 | OpMap["OP_ADDW"] = OpAddw; |
| 153 | OpMap["OP_SUB"] = OpSub; |
| 154 | OpMap["OP_SUBL"] = OpSubl; |
| 155 | OpMap["OP_SUBW"] = OpSubw; |
| 156 | OpMap["OP_MUL"] = OpMul; |
| 157 | OpMap["OP_MLA"] = OpMla; |
| 158 | OpMap["OP_MLAL"] = OpMlal; |
| 159 | OpMap["OP_MLS"] = OpMls; |
| 160 | OpMap["OP_MLSL"] = OpMlsl; |
| 161 | OpMap["OP_MUL_N"] = OpMulN; |
| 162 | OpMap["OP_MLA_N"] = OpMlaN; |
| 163 | OpMap["OP_MLS_N"] = OpMlsN; |
| 164 | OpMap["OP_MLAL_N"] = OpMlalN; |
| 165 | OpMap["OP_MLSL_N"] = OpMlslN; |
| 166 | OpMap["OP_MUL_LN"]= OpMulLane; |
| 167 | OpMap["OP_MULL_LN"] = OpMullLane; |
| 168 | OpMap["OP_MLA_LN"]= OpMlaLane; |
| 169 | OpMap["OP_MLS_LN"]= OpMlsLane; |
| 170 | OpMap["OP_MLAL_LN"] = OpMlalLane; |
| 171 | OpMap["OP_MLSL_LN"] = OpMlslLane; |
| 172 | OpMap["OP_QDMULL_LN"] = OpQDMullLane; |
| 173 | OpMap["OP_QDMLAL_LN"] = OpQDMlalLane; |
| 174 | OpMap["OP_QDMLSL_LN"] = OpQDMlslLane; |
| 175 | OpMap["OP_QDMULH_LN"] = OpQDMulhLane; |
| 176 | OpMap["OP_QRDMULH_LN"] = OpQRDMulhLane; |
| 177 | OpMap["OP_EQ"] = OpEq; |
| 178 | OpMap["OP_GE"] = OpGe; |
| 179 | OpMap["OP_LE"] = OpLe; |
| 180 | OpMap["OP_GT"] = OpGt; |
| 181 | OpMap["OP_LT"] = OpLt; |
| 182 | OpMap["OP_NEG"] = OpNeg; |
| 183 | OpMap["OP_NOT"] = OpNot; |
| 184 | OpMap["OP_AND"] = OpAnd; |
| 185 | OpMap["OP_OR"] = OpOr; |
| 186 | OpMap["OP_XOR"] = OpXor; |
| 187 | OpMap["OP_ANDN"] = OpAndNot; |
| 188 | OpMap["OP_ORN"] = OpOrNot; |
| 189 | OpMap["OP_CAST"] = OpCast; |
| 190 | OpMap["OP_CONC"] = OpConcat; |
| 191 | OpMap["OP_HI"] = OpHi; |
| 192 | OpMap["OP_LO"] = OpLo; |
| 193 | OpMap["OP_DUP"] = OpDup; |
| 194 | OpMap["OP_DUP_LN"] = OpDupLane; |
| 195 | OpMap["OP_SEL"] = OpSelect; |
| 196 | OpMap["OP_REV16"] = OpRev16; |
| 197 | OpMap["OP_REV32"] = OpRev32; |
| 198 | OpMap["OP_REV64"] = OpRev64; |
| 199 | OpMap["OP_REINT"] = OpReinterpret; |
| 200 | OpMap["OP_ABDL"] = OpAbdl; |
| 201 | OpMap["OP_ABA"] = OpAba; |
| 202 | OpMap["OP_ABAL"] = OpAbal; |
| 203 | |
| 204 | Record *SI = R.getClass("SInst"); |
| 205 | Record *II = R.getClass("IInst"); |
| 206 | Record *WI = R.getClass("WInst"); |
| 207 | ClassMap[SI] = ClassS; |
| 208 | ClassMap[II] = ClassI; |
| 209 | ClassMap[WI] = ClassW; |
| 210 | } |
| 211 | |
| 212 | // run - Emit arm_neon.h.inc |
| 213 | void run(raw_ostream &o); |
| 214 | |
| 215 | // runHeader - Emit all the __builtin prototypes used in arm_neon.h |
| 216 | void runHeader(raw_ostream &o); |
| 217 | |
| 218 | // runTests - Emit tests for all the Neon intrinsics. |
| 219 | void runTests(raw_ostream &o); |
| 220 | |
| 221 | private: |
| 222 | void emitIntrinsic(raw_ostream &OS, Record *R); |
| 223 | }; |
| 224 | } // end anonymous namespace |
| 225 | |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 226 | /// ParseTypes - break down a string such as "fQf" into a vector of StringRefs, |
| 227 | /// which each StringRef representing a single type declared in the string. |
| 228 | /// for "fQf" we would end up with 2 StringRefs, "f", and "Qf", representing |
| 229 | /// 2xfloat and 4xfloat respectively. |
| 230 | static void ParseTypes(Record *r, std::string &s, |
| 231 | SmallVectorImpl<StringRef> &TV) { |
| 232 | const char *data = s.data(); |
| 233 | int len = 0; |
| 234 | |
| 235 | for (unsigned i = 0, e = s.size(); i != e; ++i, ++len) { |
| 236 | if (data[len] == 'P' || data[len] == 'Q' || data[len] == 'U') |
| 237 | continue; |
| 238 | |
| 239 | switch (data[len]) { |
| 240 | case 'c': |
| 241 | case 's': |
| 242 | case 'i': |
| 243 | case 'l': |
| 244 | case 'h': |
| 245 | case 'f': |
| 246 | break; |
| 247 | default: |
| 248 | throw TGError(r->getLoc(), |
| 249 | "Unexpected letter: " + std::string(data + len, 1)); |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 250 | } |
| 251 | TV.push_back(StringRef(data, len + 1)); |
| 252 | data += len + 1; |
| 253 | len = -1; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /// Widen - Convert a type code into the next wider type. char -> short, |
| 258 | /// short -> int, etc. |
| 259 | static char Widen(const char t) { |
| 260 | switch (t) { |
| 261 | case 'c': |
| 262 | return 's'; |
| 263 | case 's': |
| 264 | return 'i'; |
| 265 | case 'i': |
| 266 | return 'l'; |
| 267 | case 'h': |
| 268 | return 'f'; |
| 269 | default: throw "unhandled type in widen!"; |
| 270 | } |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | /// Narrow - Convert a type code into the next smaller type. short -> char, |
| 274 | /// float -> half float, etc. |
| 275 | static char Narrow(const char t) { |
| 276 | switch (t) { |
| 277 | case 's': |
| 278 | return 'c'; |
| 279 | case 'i': |
| 280 | return 's'; |
| 281 | case 'l': |
| 282 | return 'i'; |
| 283 | case 'f': |
| 284 | return 'h'; |
| 285 | default: throw "unhandled type in narrow!"; |
| 286 | } |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | /// For a particular StringRef, return the base type code, and whether it has |
| 290 | /// the quad-vector, polynomial, or unsigned modifiers set. |
| 291 | static char ClassifyType(StringRef ty, bool &quad, bool &poly, bool &usgn) { |
| 292 | unsigned off = 0; |
| 293 | |
| 294 | // remember quad. |
| 295 | if (ty[off] == 'Q') { |
| 296 | quad = true; |
| 297 | ++off; |
| 298 | } |
| 299 | |
| 300 | // remember poly. |
| 301 | if (ty[off] == 'P') { |
| 302 | poly = true; |
| 303 | ++off; |
| 304 | } |
| 305 | |
| 306 | // remember unsigned. |
| 307 | if (ty[off] == 'U') { |
| 308 | usgn = true; |
| 309 | ++off; |
| 310 | } |
| 311 | |
| 312 | // base type to get the type string for. |
| 313 | return ty[off]; |
| 314 | } |
| 315 | |
| 316 | /// ModType - Transform a type code and its modifiers based on a mod code. The |
| 317 | /// mod code definitions may be found at the top of arm_neon.td. |
| 318 | static char ModType(const char mod, char type, bool &quad, bool &poly, |
| 319 | bool &usgn, bool &scal, bool &cnst, bool &pntr) { |
| 320 | switch (mod) { |
| 321 | case 't': |
| 322 | if (poly) { |
| 323 | poly = false; |
| 324 | usgn = true; |
| 325 | } |
| 326 | break; |
| 327 | case 'u': |
| 328 | usgn = true; |
| 329 | poly = false; |
| 330 | if (type == 'f') |
| 331 | type = 'i'; |
| 332 | break; |
| 333 | case 'x': |
| 334 | usgn = false; |
| 335 | poly = false; |
| 336 | if (type == 'f') |
| 337 | type = 'i'; |
| 338 | break; |
| 339 | case 'f': |
| 340 | if (type == 'h') |
| 341 | quad = true; |
| 342 | type = 'f'; |
| 343 | usgn = false; |
| 344 | break; |
| 345 | case 'g': |
| 346 | quad = false; |
| 347 | break; |
| 348 | case 'w': |
| 349 | type = Widen(type); |
| 350 | quad = true; |
| 351 | break; |
| 352 | case 'n': |
| 353 | type = Widen(type); |
| 354 | break; |
| 355 | case 'i': |
| 356 | type = 'i'; |
| 357 | scal = true; |
| 358 | break; |
| 359 | case 'l': |
| 360 | type = 'l'; |
| 361 | scal = true; |
| 362 | usgn = true; |
| 363 | break; |
| 364 | case 's': |
| 365 | case 'a': |
| 366 | scal = true; |
| 367 | break; |
| 368 | case 'k': |
| 369 | quad = true; |
| 370 | break; |
| 371 | case 'c': |
| 372 | cnst = true; |
| 373 | case 'p': |
| 374 | pntr = true; |
| 375 | scal = true; |
| 376 | break; |
| 377 | case 'h': |
| 378 | type = Narrow(type); |
| 379 | if (type == 'h') |
| 380 | quad = false; |
| 381 | break; |
| 382 | case 'e': |
| 383 | type = Narrow(type); |
| 384 | usgn = true; |
| 385 | break; |
| 386 | default: |
| 387 | break; |
| 388 | } |
| 389 | return type; |
| 390 | } |
| 391 | |
| 392 | /// TypeString - for a modifier and type, generate the name of the typedef for |
| 393 | /// that type. QUc -> uint8x8_t. |
| 394 | static std::string TypeString(const char mod, StringRef typestr) { |
| 395 | bool quad = false; |
| 396 | bool poly = false; |
| 397 | bool usgn = false; |
| 398 | bool scal = false; |
| 399 | bool cnst = false; |
| 400 | bool pntr = false; |
| 401 | |
| 402 | if (mod == 'v') |
| 403 | return "void"; |
| 404 | if (mod == 'i') |
| 405 | return "int"; |
| 406 | |
| 407 | // base type to get the type string for. |
| 408 | char type = ClassifyType(typestr, quad, poly, usgn); |
| 409 | |
| 410 | // Based on the modifying character, change the type and width if necessary. |
| 411 | type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr); |
| 412 | |
| 413 | SmallString<128> s; |
| 414 | |
| 415 | if (usgn) |
| 416 | s.push_back('u'); |
| 417 | |
| 418 | switch (type) { |
| 419 | case 'c': |
| 420 | s += poly ? "poly8" : "int8"; |
| 421 | if (scal) |
| 422 | break; |
| 423 | s += quad ? "x16" : "x8"; |
| 424 | break; |
| 425 | case 's': |
| 426 | s += poly ? "poly16" : "int16"; |
| 427 | if (scal) |
| 428 | break; |
| 429 | s += quad ? "x8" : "x4"; |
| 430 | break; |
| 431 | case 'i': |
| 432 | s += "int32"; |
| 433 | if (scal) |
| 434 | break; |
| 435 | s += quad ? "x4" : "x2"; |
| 436 | break; |
| 437 | case 'l': |
| 438 | s += "int64"; |
| 439 | if (scal) |
| 440 | break; |
| 441 | s += quad ? "x2" : "x1"; |
| 442 | break; |
| 443 | case 'h': |
| 444 | s += "float16"; |
| 445 | if (scal) |
| 446 | break; |
| 447 | s += quad ? "x8" : "x4"; |
| 448 | break; |
| 449 | case 'f': |
| 450 | s += "float32"; |
| 451 | if (scal) |
| 452 | break; |
| 453 | s += quad ? "x4" : "x2"; |
| 454 | break; |
| 455 | default: |
| 456 | throw "unhandled type!"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | if (mod == '2') |
| 460 | s += "x2"; |
| 461 | if (mod == '3') |
| 462 | s += "x3"; |
| 463 | if (mod == '4') |
| 464 | s += "x4"; |
| 465 | |
| 466 | // Append _t, finishing the type string typedef type. |
| 467 | s += "_t"; |
| 468 | |
| 469 | if (cnst) |
| 470 | s += " const"; |
| 471 | |
| 472 | if (pntr) |
| 473 | s += " *"; |
| 474 | |
| 475 | return s.str(); |
| 476 | } |
| 477 | |
| 478 | /// BuiltinTypeString - for a modifier and type, generate the clang |
| 479 | /// BuiltinsARM.def prototype code for the function. See the top of clang's |
| 480 | /// Builtins.def for a description of the type strings. |
| 481 | static std::string BuiltinTypeString(const char mod, StringRef typestr, |
| 482 | ClassKind ck, bool ret) { |
| 483 | bool quad = false; |
| 484 | bool poly = false; |
| 485 | bool usgn = false; |
| 486 | bool scal = false; |
| 487 | bool cnst = false; |
| 488 | bool pntr = false; |
| 489 | |
| 490 | if (mod == 'v') |
| 491 | return "v"; // void |
| 492 | if (mod == 'i') |
| 493 | return "i"; // int |
| 494 | |
| 495 | // base type to get the type string for. |
| 496 | char type = ClassifyType(typestr, quad, poly, usgn); |
| 497 | |
| 498 | // Based on the modifying character, change the type and width if necessary. |
| 499 | type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr); |
| 500 | |
| 501 | // All pointers are void* pointers. Change type to 'v' now. |
| 502 | if (pntr) { |
| 503 | usgn = false; |
| 504 | poly = false; |
| 505 | type = 'v'; |
| 506 | } |
| 507 | // Treat half-float ('h') types as unsigned short ('s') types. |
| 508 | if (type == 'h') { |
| 509 | type = 's'; |
| 510 | usgn = true; |
| 511 | } |
| 512 | usgn = usgn | poly | ((ck == ClassI || ck == ClassW) && scal && type != 'f'); |
| 513 | |
| 514 | if (scal) { |
| 515 | SmallString<128> s; |
| 516 | |
| 517 | if (usgn) |
| 518 | s.push_back('U'); |
| 519 | else if (type == 'c') |
| 520 | s.push_back('S'); // make chars explicitly signed |
| 521 | |
| 522 | if (type == 'l') // 64-bit long |
| 523 | s += "LLi"; |
| 524 | else |
| 525 | s.push_back(type); |
| 526 | |
| 527 | if (cnst) |
| 528 | s.push_back('C'); |
| 529 | if (pntr) |
| 530 | s.push_back('*'); |
| 531 | return s.str(); |
| 532 | } |
| 533 | |
| 534 | // Since the return value must be one type, return a vector type of the |
| 535 | // appropriate width which we will bitcast. An exception is made for |
| 536 | // returning structs of 2, 3, or 4 vectors which are returned in a sret-like |
| 537 | // fashion, storing them to a pointer arg. |
| 538 | if (ret) { |
| 539 | if (mod >= '2' && mod <= '4') |
| 540 | return "vv*"; // void result with void* first argument |
| 541 | if (mod == 'f' || (ck != ClassB && type == 'f')) |
| 542 | return quad ? "V4f" : "V2f"; |
| 543 | if (ck != ClassB && type == 's') |
| 544 | return quad ? "V8s" : "V4s"; |
| 545 | if (ck != ClassB && type == 'i') |
| 546 | return quad ? "V4i" : "V2i"; |
| 547 | if (ck != ClassB && type == 'l') |
| 548 | return quad ? "V2LLi" : "V1LLi"; |
| 549 | |
| 550 | return quad ? "V16Sc" : "V8Sc"; |
| 551 | } |
| 552 | |
| 553 | // Non-return array types are passed as individual vectors. |
| 554 | if (mod == '2') |
| 555 | return quad ? "V16ScV16Sc" : "V8ScV8Sc"; |
| 556 | if (mod == '3') |
| 557 | return quad ? "V16ScV16ScV16Sc" : "V8ScV8ScV8Sc"; |
| 558 | if (mod == '4') |
| 559 | return quad ? "V16ScV16ScV16ScV16Sc" : "V8ScV8ScV8ScV8Sc"; |
| 560 | |
| 561 | if (mod == 'f' || (ck != ClassB && type == 'f')) |
| 562 | return quad ? "V4f" : "V2f"; |
| 563 | if (ck != ClassB && type == 's') |
| 564 | return quad ? "V8s" : "V4s"; |
| 565 | if (ck != ClassB && type == 'i') |
| 566 | return quad ? "V4i" : "V2i"; |
| 567 | if (ck != ClassB && type == 'l') |
| 568 | return quad ? "V2LLi" : "V1LLi"; |
| 569 | |
| 570 | return quad ? "V16Sc" : "V8Sc"; |
| 571 | } |
| 572 | |
| 573 | /// MangleName - Append a type or width suffix to a base neon function name, |
| 574 | /// and insert a 'q' in the appropriate location if the operation works on |
| 575 | /// 128b rather than 64b. E.g. turn "vst2_lane" into "vst2q_lane_f32", etc. |
| 576 | static std::string MangleName(const std::string &name, StringRef typestr, |
| 577 | ClassKind ck) { |
| 578 | if (name == "vcvt_f32_f16") |
| 579 | return name; |
| 580 | |
| 581 | bool quad = false; |
| 582 | bool poly = false; |
| 583 | bool usgn = false; |
| 584 | char type = ClassifyType(typestr, quad, poly, usgn); |
| 585 | |
| 586 | std::string s = name; |
| 587 | |
| 588 | switch (type) { |
| 589 | case 'c': |
| 590 | switch (ck) { |
| 591 | case ClassS: s += poly ? "_p8" : usgn ? "_u8" : "_s8"; break; |
| 592 | case ClassI: s += "_i8"; break; |
| 593 | case ClassW: s += "_8"; break; |
| 594 | default: break; |
| 595 | } |
| 596 | break; |
| 597 | case 's': |
| 598 | switch (ck) { |
| 599 | case ClassS: s += poly ? "_p16" : usgn ? "_u16" : "_s16"; break; |
| 600 | case ClassI: s += "_i16"; break; |
| 601 | case ClassW: s += "_16"; break; |
| 602 | default: break; |
| 603 | } |
| 604 | break; |
| 605 | case 'i': |
| 606 | switch (ck) { |
| 607 | case ClassS: s += usgn ? "_u32" : "_s32"; break; |
| 608 | case ClassI: s += "_i32"; break; |
| 609 | case ClassW: s += "_32"; break; |
| 610 | default: break; |
| 611 | } |
| 612 | break; |
| 613 | case 'l': |
| 614 | switch (ck) { |
| 615 | case ClassS: s += usgn ? "_u64" : "_s64"; break; |
| 616 | case ClassI: s += "_i64"; break; |
| 617 | case ClassW: s += "_64"; break; |
| 618 | default: break; |
| 619 | } |
| 620 | break; |
| 621 | case 'h': |
| 622 | switch (ck) { |
| 623 | case ClassS: |
| 624 | case ClassI: s += "_f16"; break; |
| 625 | case ClassW: s += "_16"; break; |
| 626 | default: break; |
| 627 | } |
| 628 | break; |
| 629 | case 'f': |
| 630 | switch (ck) { |
| 631 | case ClassS: |
| 632 | case ClassI: s += "_f32"; break; |
| 633 | case ClassW: s += "_32"; break; |
| 634 | default: break; |
| 635 | } |
| 636 | break; |
| 637 | default: |
| 638 | throw "unhandled type!"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 639 | } |
| 640 | if (ck == ClassB) |
| 641 | s += "_v"; |
| 642 | |
| 643 | // Insert a 'q' before the first '_' character so that it ends up before |
| 644 | // _lane or _n on vector-scalar operations. |
| 645 | if (quad) { |
| 646 | size_t pos = s.find('_'); |
| 647 | s = s.insert(pos, "q"); |
| 648 | } |
| 649 | return s; |
| 650 | } |
| 651 | |
| 652 | /// UseMacro - Examine the prototype string to determine if the intrinsic |
| 653 | /// should be defined as a preprocessor macro instead of an inline function. |
| 654 | static bool UseMacro(const std::string &proto) { |
| 655 | // If this builtin takes an immediate argument, we need to #define it rather |
| 656 | // than use a standard declaration, so that SemaChecking can range check |
| 657 | // the immediate passed by the user. |
| 658 | if (proto.find('i') != std::string::npos) |
| 659 | return true; |
| 660 | |
| 661 | // Pointer arguments need to use macros to avoid hiding aligned attributes |
| 662 | // from the pointer type. |
| 663 | if (proto.find('p') != std::string::npos || |
| 664 | proto.find('c') != std::string::npos) |
| 665 | return true; |
| 666 | |
| 667 | return false; |
| 668 | } |
| 669 | |
| 670 | /// MacroArgUsedDirectly - Return true if argument i for an intrinsic that is |
| 671 | /// defined as a macro should be accessed directly instead of being first |
| 672 | /// assigned to a local temporary. |
| 673 | static bool MacroArgUsedDirectly(const std::string &proto, unsigned i) { |
| 674 | // True for constant ints (i), pointers (p) and const pointers (c). |
| 675 | return (proto[i] == 'i' || proto[i] == 'p' || proto[i] == 'c'); |
| 676 | } |
| 677 | |
| 678 | // Generate the string "(argtype a, argtype b, ...)" |
| 679 | static std::string GenArgs(const std::string &proto, StringRef typestr) { |
| 680 | bool define = UseMacro(proto); |
| 681 | char arg = 'a'; |
| 682 | |
| 683 | std::string s; |
| 684 | s += "("; |
| 685 | |
| 686 | for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) { |
| 687 | if (define) { |
| 688 | // Some macro arguments are used directly instead of being assigned |
| 689 | // to local temporaries; prepend an underscore prefix to make their |
| 690 | // names consistent with the local temporaries. |
| 691 | if (MacroArgUsedDirectly(proto, i)) |
| 692 | s += "__"; |
| 693 | } else { |
| 694 | s += TypeString(proto[i], typestr) + " __"; |
| 695 | } |
| 696 | s.push_back(arg); |
| 697 | if ((i + 1) < e) |
| 698 | s += ", "; |
| 699 | } |
| 700 | |
| 701 | s += ")"; |
| 702 | return s; |
| 703 | } |
| 704 | |
| 705 | // Macro arguments are not type-checked like inline function arguments, so |
| 706 | // assign them to local temporaries to get the right type checking. |
| 707 | static std::string GenMacroLocals(const std::string &proto, StringRef typestr) { |
| 708 | char arg = 'a'; |
| 709 | std::string s; |
| 710 | bool generatedLocal = false; |
| 711 | |
| 712 | for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) { |
| 713 | // Do not create a temporary for an immediate argument. |
| 714 | // That would defeat the whole point of using a macro! |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 715 | if (MacroArgUsedDirectly(proto, i)) |
| 716 | continue; |
| 717 | generatedLocal = true; |
| 718 | |
| 719 | s += TypeString(proto[i], typestr) + " __"; |
| 720 | s.push_back(arg); |
| 721 | s += " = ("; |
| 722 | s.push_back(arg); |
| 723 | s += "); "; |
| 724 | } |
| 725 | |
| 726 | if (generatedLocal) |
| 727 | s += "\\\n "; |
| 728 | return s; |
| 729 | } |
| 730 | |
| 731 | // Use the vmovl builtin to sign-extend or zero-extend a vector. |
| 732 | static std::string Extend(StringRef typestr, const std::string &a) { |
| 733 | std::string s; |
| 734 | s = MangleName("vmovl", typestr, ClassS); |
| 735 | s += "(" + a + ")"; |
| 736 | return s; |
| 737 | } |
| 738 | |
| 739 | static std::string Duplicate(unsigned nElts, StringRef typestr, |
| 740 | const std::string &a) { |
| 741 | std::string s; |
| 742 | |
| 743 | s = "(" + TypeString('d', typestr) + "){ "; |
| 744 | for (unsigned i = 0; i != nElts; ++i) { |
| 745 | s += a; |
| 746 | if ((i + 1) < nElts) |
| 747 | s += ", "; |
| 748 | } |
| 749 | s += " }"; |
| 750 | |
| 751 | return s; |
| 752 | } |
| 753 | |
| 754 | static std::string SplatLane(unsigned nElts, const std::string &vec, |
| 755 | const std::string &lane) { |
| 756 | std::string s = "__builtin_shufflevector(" + vec + ", " + vec; |
| 757 | for (unsigned i = 0; i < nElts; ++i) |
| 758 | s += ", " + lane; |
| 759 | s += ")"; |
| 760 | return s; |
| 761 | } |
| 762 | |
| 763 | static unsigned GetNumElements(StringRef typestr, bool &quad) { |
| 764 | quad = false; |
| 765 | bool dummy = false; |
| 766 | char type = ClassifyType(typestr, quad, dummy, dummy); |
| 767 | unsigned nElts = 0; |
| 768 | switch (type) { |
| 769 | case 'c': nElts = 8; break; |
| 770 | case 's': nElts = 4; break; |
| 771 | case 'i': nElts = 2; break; |
| 772 | case 'l': nElts = 1; break; |
| 773 | case 'h': nElts = 4; break; |
| 774 | case 'f': nElts = 2; break; |
| 775 | default: |
| 776 | throw "unhandled type!"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 777 | } |
| 778 | if (quad) nElts <<= 1; |
| 779 | return nElts; |
| 780 | } |
| 781 | |
| 782 | // Generate the definition for this intrinsic, e.g. "a + b" for OpAdd. |
| 783 | static std::string GenOpString(OpKind op, const std::string &proto, |
| 784 | StringRef typestr) { |
| 785 | bool quad; |
| 786 | unsigned nElts = GetNumElements(typestr, quad); |
| 787 | bool define = UseMacro(proto); |
| 788 | |
| 789 | std::string ts = TypeString(proto[0], typestr); |
| 790 | std::string s; |
| 791 | if (!define) { |
| 792 | s = "return "; |
| 793 | } |
| 794 | |
| 795 | switch(op) { |
| 796 | case OpAdd: |
| 797 | s += "__a + __b;"; |
| 798 | break; |
| 799 | case OpAddl: |
| 800 | s += Extend(typestr, "__a") + " + " + Extend(typestr, "__b") + ";"; |
| 801 | break; |
| 802 | case OpAddw: |
| 803 | s += "__a + " + Extend(typestr, "__b") + ";"; |
| 804 | break; |
| 805 | case OpSub: |
| 806 | s += "__a - __b;"; |
| 807 | break; |
| 808 | case OpSubl: |
| 809 | s += Extend(typestr, "__a") + " - " + Extend(typestr, "__b") + ";"; |
| 810 | break; |
| 811 | case OpSubw: |
| 812 | s += "__a - " + Extend(typestr, "__b") + ";"; |
| 813 | break; |
| 814 | case OpMulN: |
| 815 | s += "__a * " + Duplicate(nElts, typestr, "__b") + ";"; |
| 816 | break; |
| 817 | case OpMulLane: |
| 818 | s += "__a * " + SplatLane(nElts, "__b", "__c") + ";"; |
| 819 | break; |
| 820 | case OpMul: |
| 821 | s += "__a * __b;"; |
| 822 | break; |
| 823 | case OpMullLane: |
| 824 | s += MangleName("vmull", typestr, ClassS) + "(__a, " + |
| 825 | SplatLane(nElts, "__b", "__c") + ");"; |
| 826 | break; |
| 827 | case OpMlaN: |
| 828 | s += "__a + (__b * " + Duplicate(nElts, typestr, "__c") + ");"; |
| 829 | break; |
| 830 | case OpMlaLane: |
| 831 | s += "__a + (__b * " + SplatLane(nElts, "__c", "__d") + ");"; |
| 832 | break; |
| 833 | case OpMla: |
| 834 | s += "__a + (__b * __c);"; |
| 835 | break; |
| 836 | case OpMlalN: |
| 837 | s += "__a + " + MangleName("vmull", typestr, ClassS) + "(__b, " + |
| 838 | Duplicate(nElts, typestr, "__c") + ");"; |
| 839 | break; |
| 840 | case OpMlalLane: |
| 841 | s += "__a + " + MangleName("vmull", typestr, ClassS) + "(__b, " + |
| 842 | SplatLane(nElts, "__c", "__d") + ");"; |
| 843 | break; |
| 844 | case OpMlal: |
| 845 | s += "__a + " + MangleName("vmull", typestr, ClassS) + "(__b, __c);"; |
| 846 | break; |
| 847 | case OpMlsN: |
| 848 | s += "__a - (__b * " + Duplicate(nElts, typestr, "__c") + ");"; |
| 849 | break; |
| 850 | case OpMlsLane: |
| 851 | s += "__a - (__b * " + SplatLane(nElts, "__c", "__d") + ");"; |
| 852 | break; |
| 853 | case OpMls: |
| 854 | s += "__a - (__b * __c);"; |
| 855 | break; |
| 856 | case OpMlslN: |
| 857 | s += "__a - " + MangleName("vmull", typestr, ClassS) + "(__b, " + |
| 858 | Duplicate(nElts, typestr, "__c") + ");"; |
| 859 | break; |
| 860 | case OpMlslLane: |
| 861 | s += "__a - " + MangleName("vmull", typestr, ClassS) + "(__b, " + |
| 862 | SplatLane(nElts, "__c", "__d") + ");"; |
| 863 | break; |
| 864 | case OpMlsl: |
| 865 | s += "__a - " + MangleName("vmull", typestr, ClassS) + "(__b, __c);"; |
| 866 | break; |
| 867 | case OpQDMullLane: |
| 868 | s += MangleName("vqdmull", typestr, ClassS) + "(__a, " + |
| 869 | SplatLane(nElts, "__b", "__c") + ");"; |
| 870 | break; |
| 871 | case OpQDMlalLane: |
| 872 | s += MangleName("vqdmlal", typestr, ClassS) + "(__a, __b, " + |
| 873 | SplatLane(nElts, "__c", "__d") + ");"; |
| 874 | break; |
| 875 | case OpQDMlslLane: |
| 876 | s += MangleName("vqdmlsl", typestr, ClassS) + "(__a, __b, " + |
| 877 | SplatLane(nElts, "__c", "__d") + ");"; |
| 878 | break; |
| 879 | case OpQDMulhLane: |
| 880 | s += MangleName("vqdmulh", typestr, ClassS) + "(__a, " + |
| 881 | SplatLane(nElts, "__b", "__c") + ");"; |
| 882 | break; |
| 883 | case OpQRDMulhLane: |
| 884 | s += MangleName("vqrdmulh", typestr, ClassS) + "(__a, " + |
| 885 | SplatLane(nElts, "__b", "__c") + ");"; |
| 886 | break; |
| 887 | case OpEq: |
| 888 | s += "(" + ts + ")(__a == __b);"; |
| 889 | break; |
| 890 | case OpGe: |
| 891 | s += "(" + ts + ")(__a >= __b);"; |
| 892 | break; |
| 893 | case OpLe: |
| 894 | s += "(" + ts + ")(__a <= __b);"; |
| 895 | break; |
| 896 | case OpGt: |
| 897 | s += "(" + ts + ")(__a > __b);"; |
| 898 | break; |
| 899 | case OpLt: |
| 900 | s += "(" + ts + ")(__a < __b);"; |
| 901 | break; |
| 902 | case OpNeg: |
| 903 | s += " -__a;"; |
| 904 | break; |
| 905 | case OpNot: |
| 906 | s += " ~__a;"; |
| 907 | break; |
| 908 | case OpAnd: |
| 909 | s += "__a & __b;"; |
| 910 | break; |
| 911 | case OpOr: |
| 912 | s += "__a | __b;"; |
| 913 | break; |
| 914 | case OpXor: |
| 915 | s += "__a ^ __b;"; |
| 916 | break; |
| 917 | case OpAndNot: |
| 918 | s += "__a & ~__b;"; |
| 919 | break; |
| 920 | case OpOrNot: |
| 921 | s += "__a | ~__b;"; |
| 922 | break; |
| 923 | case OpCast: |
| 924 | s += "(" + ts + ")__a;"; |
| 925 | break; |
| 926 | case OpConcat: |
| 927 | s += "(" + ts + ")__builtin_shufflevector((int64x1_t)__a"; |
| 928 | s += ", (int64x1_t)__b, 0, 1);"; |
| 929 | break; |
| 930 | case OpHi: |
| 931 | s += "(" + ts + |
| 932 | ")__builtin_shufflevector((int64x2_t)__a, (int64x2_t)__a, 1);"; |
| 933 | break; |
| 934 | case OpLo: |
| 935 | s += "(" + ts + |
| 936 | ")__builtin_shufflevector((int64x2_t)__a, (int64x2_t)__a, 0);"; |
| 937 | break; |
| 938 | case OpDup: |
| 939 | s += Duplicate(nElts, typestr, "__a") + ";"; |
| 940 | break; |
| 941 | case OpDupLane: |
| 942 | s += SplatLane(nElts, "__a", "__b") + ";"; |
| 943 | break; |
| 944 | case OpSelect: |
| 945 | // ((0 & 1) | (~0 & 2)) |
| 946 | s += "(" + ts + ")"; |
| 947 | ts = TypeString(proto[1], typestr); |
| 948 | s += "((__a & (" + ts + ")__b) | "; |
| 949 | s += "(~__a & (" + ts + ")__c));"; |
| 950 | break; |
| 951 | case OpRev16: |
| 952 | s += "__builtin_shufflevector(__a, __a"; |
| 953 | for (unsigned i = 2; i <= nElts; i += 2) |
| 954 | for (unsigned j = 0; j != 2; ++j) |
| 955 | s += ", " + utostr(i - j - 1); |
| 956 | s += ");"; |
| 957 | break; |
| 958 | case OpRev32: { |
| 959 | unsigned WordElts = nElts >> (1 + (int)quad); |
| 960 | s += "__builtin_shufflevector(__a, __a"; |
| 961 | for (unsigned i = WordElts; i <= nElts; i += WordElts) |
| 962 | for (unsigned j = 0; j != WordElts; ++j) |
| 963 | s += ", " + utostr(i - j - 1); |
| 964 | s += ");"; |
| 965 | break; |
| 966 | } |
| 967 | case OpRev64: { |
| 968 | unsigned DblWordElts = nElts >> (int)quad; |
| 969 | s += "__builtin_shufflevector(__a, __a"; |
| 970 | for (unsigned i = DblWordElts; i <= nElts; i += DblWordElts) |
| 971 | for (unsigned j = 0; j != DblWordElts; ++j) |
| 972 | s += ", " + utostr(i - j - 1); |
| 973 | s += ");"; |
| 974 | break; |
| 975 | } |
| 976 | case OpAbdl: { |
| 977 | std::string abd = MangleName("vabd", typestr, ClassS) + "(__a, __b)"; |
| 978 | if (typestr[0] != 'U') { |
| 979 | // vabd results are always unsigned and must be zero-extended. |
| 980 | std::string utype = "U" + typestr.str(); |
| 981 | s += "(" + TypeString(proto[0], typestr) + ")"; |
| 982 | abd = "(" + TypeString('d', utype) + ")" + abd; |
| 983 | s += Extend(utype, abd) + ";"; |
| 984 | } else { |
| 985 | s += Extend(typestr, abd) + ";"; |
| 986 | } |
| 987 | break; |
| 988 | } |
| 989 | case OpAba: |
| 990 | s += "__a + " + MangleName("vabd", typestr, ClassS) + "(__b, __c);"; |
| 991 | break; |
| 992 | case OpAbal: { |
| 993 | s += "__a + "; |
| 994 | std::string abd = MangleName("vabd", typestr, ClassS) + "(__b, __c)"; |
| 995 | if (typestr[0] != 'U') { |
| 996 | // vabd results are always unsigned and must be zero-extended. |
| 997 | std::string utype = "U" + typestr.str(); |
| 998 | s += "(" + TypeString(proto[0], typestr) + ")"; |
| 999 | abd = "(" + TypeString('d', utype) + ")" + abd; |
| 1000 | s += Extend(utype, abd) + ";"; |
| 1001 | } else { |
| 1002 | s += Extend(typestr, abd) + ";"; |
| 1003 | } |
| 1004 | break; |
| 1005 | } |
| 1006 | default: |
| 1007 | throw "unknown OpKind!"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1008 | } |
| 1009 | return s; |
| 1010 | } |
| 1011 | |
| 1012 | static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) { |
| 1013 | unsigned mod = proto[0]; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1014 | |
| 1015 | if (mod == 'v' || mod == 'f') |
| 1016 | mod = proto[1]; |
| 1017 | |
| 1018 | bool quad = false; |
| 1019 | bool poly = false; |
| 1020 | bool usgn = false; |
| 1021 | bool scal = false; |
| 1022 | bool cnst = false; |
| 1023 | bool pntr = false; |
| 1024 | |
| 1025 | // Base type to get the type string for. |
| 1026 | char type = ClassifyType(typestr, quad, poly, usgn); |
| 1027 | |
| 1028 | // Based on the modifying character, change the type and width if necessary. |
| 1029 | type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr); |
| 1030 | |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1031 | NeonTypeFlags::EltType ET; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1032 | switch (type) { |
| 1033 | case 'c': |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1034 | ET = poly ? NeonTypeFlags::Poly8 : NeonTypeFlags::Int8; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1035 | break; |
| 1036 | case 's': |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1037 | ET = poly ? NeonTypeFlags::Poly16 : NeonTypeFlags::Int16; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1038 | break; |
| 1039 | case 'i': |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1040 | ET = NeonTypeFlags::Int32; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1041 | break; |
| 1042 | case 'l': |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1043 | ET = NeonTypeFlags::Int64; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1044 | break; |
| 1045 | case 'h': |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1046 | ET = NeonTypeFlags::Float16; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1047 | break; |
| 1048 | case 'f': |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1049 | ET = NeonTypeFlags::Float32; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1050 | break; |
| 1051 | default: |
| 1052 | throw "unhandled type!"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1053 | } |
Bob Wilson | da95f73 | 2011-11-08 01:16:11 +0000 | [diff] [blame] | 1054 | NeonTypeFlags Flags(ET, usgn, quad && proto[1] != 'g'); |
| 1055 | return Flags.getFlags(); |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | // Generate the definition for this intrinsic, e.g. __builtin_neon_cls(a) |
| 1059 | static std::string GenBuiltin(const std::string &name, const std::string &proto, |
| 1060 | StringRef typestr, ClassKind ck) { |
| 1061 | std::string s; |
| 1062 | |
| 1063 | // If this builtin returns a struct 2, 3, or 4 vectors, pass it as an implicit |
| 1064 | // sret-like argument. |
| 1065 | bool sret = (proto[0] >= '2' && proto[0] <= '4'); |
| 1066 | |
| 1067 | bool define = UseMacro(proto); |
| 1068 | |
| 1069 | // Check if the prototype has a scalar operand with the type of the vector |
| 1070 | // elements. If not, bitcasting the args will take care of arg checking. |
| 1071 | // The actual signedness etc. will be taken care of with special enums. |
| 1072 | if (proto.find('s') == std::string::npos) |
| 1073 | ck = ClassB; |
| 1074 | |
| 1075 | if (proto[0] != 'v') { |
| 1076 | std::string ts = TypeString(proto[0], typestr); |
| 1077 | |
| 1078 | if (define) { |
| 1079 | if (sret) |
| 1080 | s += ts + " r; "; |
| 1081 | else |
| 1082 | s += "(" + ts + ")"; |
| 1083 | } else if (sret) { |
| 1084 | s += ts + " r; "; |
| 1085 | } else { |
| 1086 | s += "return (" + ts + ")"; |
| 1087 | } |
| 1088 | } |
| 1089 | |
| 1090 | bool splat = proto.find('a') != std::string::npos; |
| 1091 | |
| 1092 | s += "__builtin_neon_"; |
| 1093 | if (splat) { |
| 1094 | // Call the non-splat builtin: chop off the "_n" suffix from the name. |
| 1095 | std::string vname(name, 0, name.size()-2); |
| 1096 | s += MangleName(vname, typestr, ck); |
| 1097 | } else { |
| 1098 | s += MangleName(name, typestr, ck); |
| 1099 | } |
| 1100 | s += "("; |
| 1101 | |
| 1102 | // Pass the address of the return variable as the first argument to sret-like |
| 1103 | // builtins. |
| 1104 | if (sret) |
| 1105 | s += "&r, "; |
| 1106 | |
| 1107 | char arg = 'a'; |
| 1108 | for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) { |
| 1109 | std::string args = std::string(&arg, 1); |
| 1110 | |
| 1111 | // Use the local temporaries instead of the macro arguments. |
| 1112 | args = "__" + args; |
| 1113 | |
| 1114 | bool argQuad = false; |
| 1115 | bool argPoly = false; |
| 1116 | bool argUsgn = false; |
| 1117 | bool argScalar = false; |
| 1118 | bool dummy = false; |
| 1119 | char argType = ClassifyType(typestr, argQuad, argPoly, argUsgn); |
| 1120 | argType = ModType(proto[i], argType, argQuad, argPoly, argUsgn, argScalar, |
| 1121 | dummy, dummy); |
| 1122 | |
| 1123 | // Handle multiple-vector values specially, emitting each subvector as an |
| 1124 | // argument to the __builtin. |
| 1125 | if (proto[i] >= '2' && proto[i] <= '4') { |
| 1126 | // Check if an explicit cast is needed. |
| 1127 | if (argType != 'c' || argPoly || argUsgn) |
| 1128 | args = (argQuad ? "(int8x16_t)" : "(int8x8_t)") + args; |
| 1129 | |
| 1130 | for (unsigned vi = 0, ve = proto[i] - '0'; vi != ve; ++vi) { |
| 1131 | s += args + ".val[" + utostr(vi) + "]"; |
| 1132 | if ((vi + 1) < ve) |
| 1133 | s += ", "; |
| 1134 | } |
| 1135 | if ((i + 1) < e) |
| 1136 | s += ", "; |
| 1137 | |
| 1138 | continue; |
| 1139 | } |
| 1140 | |
| 1141 | if (splat && (i + 1) == e) |
| 1142 | args = Duplicate(GetNumElements(typestr, argQuad), typestr, args); |
| 1143 | |
| 1144 | // Check if an explicit cast is needed. |
| 1145 | if ((splat || !argScalar) && |
| 1146 | ((ck == ClassB && argType != 'c') || argPoly || argUsgn)) { |
| 1147 | std::string argTypeStr = "c"; |
| 1148 | if (ck != ClassB) |
| 1149 | argTypeStr = argType; |
| 1150 | if (argQuad) |
| 1151 | argTypeStr = "Q" + argTypeStr; |
| 1152 | args = "(" + TypeString('d', argTypeStr) + ")" + args; |
| 1153 | } |
| 1154 | |
| 1155 | s += args; |
| 1156 | if ((i + 1) < e) |
| 1157 | s += ", "; |
| 1158 | } |
| 1159 | |
| 1160 | // Extra constant integer to hold type class enum for this function, e.g. s8 |
| 1161 | if (ck == ClassB) |
| 1162 | s += ", " + utostr(GetNeonEnum(proto, typestr)); |
| 1163 | |
| 1164 | s += ");"; |
| 1165 | |
| 1166 | if (proto[0] != 'v' && sret) { |
| 1167 | if (define) |
| 1168 | s += " r;"; |
| 1169 | else |
| 1170 | s += " return r;"; |
| 1171 | } |
| 1172 | return s; |
| 1173 | } |
| 1174 | |
| 1175 | static std::string GenBuiltinDef(const std::string &name, |
| 1176 | const std::string &proto, |
| 1177 | StringRef typestr, ClassKind ck) { |
| 1178 | std::string s("BUILTIN(__builtin_neon_"); |
| 1179 | |
| 1180 | // If all types are the same size, bitcasting the args will take care |
| 1181 | // of arg checking. The actual signedness etc. will be taken care of with |
| 1182 | // special enums. |
| 1183 | if (proto.find('s') == std::string::npos) |
| 1184 | ck = ClassB; |
| 1185 | |
| 1186 | s += MangleName(name, typestr, ck); |
| 1187 | s += ", \""; |
| 1188 | |
| 1189 | for (unsigned i = 0, e = proto.size(); i != e; ++i) |
| 1190 | s += BuiltinTypeString(proto[i], typestr, ck, i == 0); |
| 1191 | |
| 1192 | // Extra constant integer to hold type class enum for this function, e.g. s8 |
| 1193 | if (ck == ClassB) |
| 1194 | s += "i"; |
| 1195 | |
| 1196 | s += "\", \"n\")"; |
| 1197 | return s; |
| 1198 | } |
| 1199 | |
| 1200 | static std::string GenIntrinsic(const std::string &name, |
| 1201 | const std::string &proto, |
| 1202 | StringRef outTypeStr, StringRef inTypeStr, |
| 1203 | OpKind kind, ClassKind classKind) { |
| 1204 | assert(!proto.empty() && ""); |
Jim Grosbach | 667381b | 2012-05-09 18:17:30 +0000 | [diff] [blame] | 1205 | bool define = UseMacro(proto) && kind != OpUnavailable; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1206 | std::string s; |
| 1207 | |
| 1208 | // static always inline + return type |
| 1209 | if (define) |
| 1210 | s += "#define "; |
| 1211 | else |
| 1212 | s += "__ai " + TypeString(proto[0], outTypeStr) + " "; |
| 1213 | |
| 1214 | // Function name with type suffix |
| 1215 | std::string mangledName = MangleName(name, outTypeStr, ClassS); |
| 1216 | if (outTypeStr != inTypeStr) { |
| 1217 | // If the input type is different (e.g., for vreinterpret), append a suffix |
| 1218 | // for the input type. String off a "Q" (quad) prefix so that MangleName |
| 1219 | // does not insert another "q" in the name. |
| 1220 | unsigned typeStrOff = (inTypeStr[0] == 'Q' ? 1 : 0); |
| 1221 | StringRef inTypeNoQuad = inTypeStr.substr(typeStrOff); |
| 1222 | mangledName = MangleName(mangledName, inTypeNoQuad, ClassS); |
| 1223 | } |
| 1224 | s += mangledName; |
| 1225 | |
| 1226 | // Function arguments |
| 1227 | s += GenArgs(proto, inTypeStr); |
| 1228 | |
| 1229 | // Definition. |
| 1230 | if (define) { |
| 1231 | s += " __extension__ ({ \\\n "; |
| 1232 | s += GenMacroLocals(proto, inTypeStr); |
Jim Grosbach | 667381b | 2012-05-09 18:17:30 +0000 | [diff] [blame] | 1233 | } else if (kind == OpUnavailable) { |
| 1234 | s += " __attribute__((unavailable));\n"; |
| 1235 | return s; |
| 1236 | } else |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1237 | s += " { \\\n "; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1238 | |
| 1239 | if (kind != OpNone) |
| 1240 | s += GenOpString(kind, proto, outTypeStr); |
| 1241 | else |
| 1242 | s += GenBuiltin(name, proto, outTypeStr, classKind); |
| 1243 | if (define) |
| 1244 | s += " })"; |
| 1245 | else |
| 1246 | s += " }"; |
| 1247 | s += "\n"; |
| 1248 | return s; |
| 1249 | } |
| 1250 | |
| 1251 | /// run - Read the records in arm_neon.td and output arm_neon.h. arm_neon.h |
| 1252 | /// is comprised of type definitions and function declarations. |
| 1253 | void NeonEmitter::run(raw_ostream &OS) { |
| 1254 | OS << |
| 1255 | "/*===---- arm_neon.h - ARM Neon intrinsics ------------------------------" |
| 1256 | "---===\n" |
| 1257 | " *\n" |
| 1258 | " * Permission is hereby granted, free of charge, to any person obtaining " |
| 1259 | "a copy\n" |
| 1260 | " * of this software and associated documentation files (the \"Software\")," |
| 1261 | " to deal\n" |
| 1262 | " * in the Software without restriction, including without limitation the " |
| 1263 | "rights\n" |
| 1264 | " * to use, copy, modify, merge, publish, distribute, sublicense, " |
| 1265 | "and/or sell\n" |
| 1266 | " * copies of the Software, and to permit persons to whom the Software is\n" |
| 1267 | " * furnished to do so, subject to the following conditions:\n" |
| 1268 | " *\n" |
| 1269 | " * The above copyright notice and this permission notice shall be " |
| 1270 | "included in\n" |
| 1271 | " * all copies or substantial portions of the Software.\n" |
| 1272 | " *\n" |
| 1273 | " * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, " |
| 1274 | "EXPRESS OR\n" |
| 1275 | " * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF " |
| 1276 | "MERCHANTABILITY,\n" |
| 1277 | " * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT " |
| 1278 | "SHALL THE\n" |
| 1279 | " * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR " |
| 1280 | "OTHER\n" |
| 1281 | " * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, " |
| 1282 | "ARISING FROM,\n" |
| 1283 | " * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER " |
| 1284 | "DEALINGS IN\n" |
| 1285 | " * THE SOFTWARE.\n" |
| 1286 | " *\n" |
| 1287 | " *===--------------------------------------------------------------------" |
| 1288 | "---===\n" |
| 1289 | " */\n\n"; |
| 1290 | |
| 1291 | OS << "#ifndef __ARM_NEON_H\n"; |
| 1292 | OS << "#define __ARM_NEON_H\n\n"; |
| 1293 | |
| 1294 | OS << "#ifndef __ARM_NEON__\n"; |
| 1295 | OS << "#error \"NEON support not enabled\"\n"; |
| 1296 | OS << "#endif\n\n"; |
| 1297 | |
| 1298 | OS << "#include <stdint.h>\n\n"; |
| 1299 | |
| 1300 | // Emit NEON-specific scalar typedefs. |
| 1301 | OS << "typedef float float32_t;\n"; |
| 1302 | OS << "typedef int8_t poly8_t;\n"; |
| 1303 | OS << "typedef int16_t poly16_t;\n"; |
| 1304 | OS << "typedef uint16_t float16_t;\n"; |
| 1305 | |
| 1306 | // Emit Neon vector typedefs. |
| 1307 | std::string TypedefTypes("cQcsQsiQilQlUcQUcUsQUsUiQUiUlQUlhQhfQfPcQPcPsQPs"); |
| 1308 | SmallVector<StringRef, 24> TDTypeVec; |
| 1309 | ParseTypes(0, TypedefTypes, TDTypeVec); |
| 1310 | |
| 1311 | // Emit vector typedefs. |
| 1312 | for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) { |
| 1313 | bool dummy, quad = false, poly = false; |
| 1314 | (void) ClassifyType(TDTypeVec[i], quad, poly, dummy); |
| 1315 | if (poly) |
| 1316 | OS << "typedef __attribute__((neon_polyvector_type("; |
| 1317 | else |
| 1318 | OS << "typedef __attribute__((neon_vector_type("; |
| 1319 | |
| 1320 | unsigned nElts = GetNumElements(TDTypeVec[i], quad); |
| 1321 | OS << utostr(nElts) << "))) "; |
| 1322 | if (nElts < 10) |
| 1323 | OS << " "; |
| 1324 | |
| 1325 | OS << TypeString('s', TDTypeVec[i]); |
| 1326 | OS << " " << TypeString('d', TDTypeVec[i]) << ";\n"; |
| 1327 | } |
| 1328 | OS << "\n"; |
| 1329 | |
| 1330 | // Emit struct typedefs. |
| 1331 | for (unsigned vi = 2; vi != 5; ++vi) { |
| 1332 | for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) { |
| 1333 | std::string ts = TypeString('d', TDTypeVec[i]); |
| 1334 | std::string vs = TypeString('0' + vi, TDTypeVec[i]); |
| 1335 | OS << "typedef struct " << vs << " {\n"; |
| 1336 | OS << " " << ts << " val"; |
| 1337 | OS << "[" << utostr(vi) << "]"; |
| 1338 | OS << ";\n} "; |
| 1339 | OS << vs << ";\n\n"; |
| 1340 | } |
| 1341 | } |
| 1342 | |
Bob Wilson | d1af3b9 | 2011-10-14 16:55:33 +0000 | [diff] [blame] | 1343 | OS<<"#define __ai static __attribute__((__always_inline__, __nodebug__))\n\n"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1344 | |
| 1345 | std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst"); |
| 1346 | |
| 1347 | // Emit vmovl, vmull and vabd intrinsics first so they can be used by other |
| 1348 | // intrinsics. (Some of the saturating multiply instructions are also |
| 1349 | // used to implement the corresponding "_lane" variants, but tablegen |
| 1350 | // sorts the records into alphabetical order so that the "_lane" variants |
| 1351 | // come after the intrinsics they use.) |
| 1352 | emitIntrinsic(OS, Records.getDef("VMOVL")); |
| 1353 | emitIntrinsic(OS, Records.getDef("VMULL")); |
| 1354 | emitIntrinsic(OS, Records.getDef("VABD")); |
| 1355 | |
| 1356 | for (unsigned i = 0, e = RV.size(); i != e; ++i) { |
| 1357 | Record *R = RV[i]; |
| 1358 | if (R->getName() != "VMOVL" && |
| 1359 | R->getName() != "VMULL" && |
| 1360 | R->getName() != "VABD") |
| 1361 | emitIntrinsic(OS, R); |
| 1362 | } |
| 1363 | |
| 1364 | OS << "#undef __ai\n\n"; |
| 1365 | OS << "#endif /* __ARM_NEON_H */\n"; |
| 1366 | } |
| 1367 | |
| 1368 | /// emitIntrinsic - Write out the arm_neon.h header file definitions for the |
| 1369 | /// intrinsics specified by record R. |
| 1370 | void NeonEmitter::emitIntrinsic(raw_ostream &OS, Record *R) { |
| 1371 | std::string name = R->getValueAsString("Name"); |
| 1372 | std::string Proto = R->getValueAsString("Prototype"); |
| 1373 | std::string Types = R->getValueAsString("Types"); |
| 1374 | |
| 1375 | SmallVector<StringRef, 16> TypeVec; |
| 1376 | ParseTypes(R, Types, TypeVec); |
| 1377 | |
| 1378 | OpKind kind = OpMap[R->getValueAsDef("Operand")->getName()]; |
| 1379 | |
| 1380 | ClassKind classKind = ClassNone; |
| 1381 | if (R->getSuperClasses().size() >= 2) |
| 1382 | classKind = ClassMap[R->getSuperClasses()[1]]; |
| 1383 | if (classKind == ClassNone && kind == OpNone) |
| 1384 | throw TGError(R->getLoc(), "Builtin has no class kind"); |
| 1385 | |
| 1386 | for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) { |
| 1387 | if (kind == OpReinterpret) { |
| 1388 | bool outQuad = false; |
| 1389 | bool dummy = false; |
| 1390 | (void)ClassifyType(TypeVec[ti], outQuad, dummy, dummy); |
| 1391 | for (unsigned srcti = 0, srcte = TypeVec.size(); |
| 1392 | srcti != srcte; ++srcti) { |
| 1393 | bool inQuad = false; |
| 1394 | (void)ClassifyType(TypeVec[srcti], inQuad, dummy, dummy); |
| 1395 | if (srcti == ti || inQuad != outQuad) |
| 1396 | continue; |
| 1397 | OS << GenIntrinsic(name, Proto, TypeVec[ti], TypeVec[srcti], |
| 1398 | OpCast, ClassS); |
| 1399 | } |
| 1400 | } else { |
| 1401 | OS << GenIntrinsic(name, Proto, TypeVec[ti], TypeVec[ti], |
| 1402 | kind, classKind); |
| 1403 | } |
| 1404 | } |
| 1405 | OS << "\n"; |
| 1406 | } |
| 1407 | |
| 1408 | static unsigned RangeFromType(const char mod, StringRef typestr) { |
| 1409 | // base type to get the type string for. |
| 1410 | bool quad = false, dummy = false; |
| 1411 | char type = ClassifyType(typestr, quad, dummy, dummy); |
| 1412 | type = ModType(mod, type, quad, dummy, dummy, dummy, dummy, dummy); |
| 1413 | |
| 1414 | switch (type) { |
| 1415 | case 'c': |
| 1416 | return (8 << (int)quad) - 1; |
| 1417 | case 'h': |
| 1418 | case 's': |
| 1419 | return (4 << (int)quad) - 1; |
| 1420 | case 'f': |
| 1421 | case 'i': |
| 1422 | return (2 << (int)quad) - 1; |
| 1423 | case 'l': |
| 1424 | return (1 << (int)quad) - 1; |
| 1425 | default: |
| 1426 | throw "unhandled type!"; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1427 | } |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1428 | } |
| 1429 | |
| 1430 | /// runHeader - Emit a file with sections defining: |
| 1431 | /// 1. the NEON section of BuiltinsARM.def. |
| 1432 | /// 2. the SemaChecking code for the type overload checking. |
Jim Grosbach | 667381b | 2012-05-09 18:17:30 +0000 | [diff] [blame] | 1433 | /// 3. the SemaChecking code for validation of intrinsic immediate arguments. |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1434 | void NeonEmitter::runHeader(raw_ostream &OS) { |
| 1435 | std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst"); |
| 1436 | |
| 1437 | StringMap<OpKind> EmittedMap; |
| 1438 | |
| 1439 | // Generate BuiltinsARM.def for NEON |
| 1440 | OS << "#ifdef GET_NEON_BUILTINS\n"; |
| 1441 | for (unsigned i = 0, e = RV.size(); i != e; ++i) { |
| 1442 | Record *R = RV[i]; |
| 1443 | OpKind k = OpMap[R->getValueAsDef("Operand")->getName()]; |
| 1444 | if (k != OpNone) |
| 1445 | continue; |
| 1446 | |
| 1447 | std::string Proto = R->getValueAsString("Prototype"); |
| 1448 | |
| 1449 | // Functions with 'a' (the splat code) in the type prototype should not get |
| 1450 | // their own builtin as they use the non-splat variant. |
| 1451 | if (Proto.find('a') != std::string::npos) |
| 1452 | continue; |
| 1453 | |
| 1454 | std::string Types = R->getValueAsString("Types"); |
| 1455 | SmallVector<StringRef, 16> TypeVec; |
| 1456 | ParseTypes(R, Types, TypeVec); |
| 1457 | |
| 1458 | if (R->getSuperClasses().size() < 2) |
| 1459 | throw TGError(R->getLoc(), "Builtin has no class kind"); |
| 1460 | |
| 1461 | std::string name = R->getValueAsString("Name"); |
| 1462 | ClassKind ck = ClassMap[R->getSuperClasses()[1]]; |
| 1463 | |
| 1464 | for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) { |
| 1465 | // Generate the BuiltinsARM.def declaration for this builtin, ensuring |
| 1466 | // that each unique BUILTIN() macro appears only once in the output |
| 1467 | // stream. |
| 1468 | std::string bd = GenBuiltinDef(name, Proto, TypeVec[ti], ck); |
| 1469 | if (EmittedMap.count(bd)) |
| 1470 | continue; |
| 1471 | |
| 1472 | EmittedMap[bd] = OpNone; |
| 1473 | OS << bd << "\n"; |
| 1474 | } |
| 1475 | } |
| 1476 | OS << "#endif\n\n"; |
| 1477 | |
| 1478 | // Generate the overloaded type checking code for SemaChecking.cpp |
| 1479 | OS << "#ifdef GET_NEON_OVERLOAD_CHECK\n"; |
| 1480 | for (unsigned i = 0, e = RV.size(); i != e; ++i) { |
| 1481 | Record *R = RV[i]; |
| 1482 | OpKind k = OpMap[R->getValueAsDef("Operand")->getName()]; |
| 1483 | if (k != OpNone) |
| 1484 | continue; |
| 1485 | |
| 1486 | std::string Proto = R->getValueAsString("Prototype"); |
| 1487 | std::string Types = R->getValueAsString("Types"); |
| 1488 | std::string name = R->getValueAsString("Name"); |
| 1489 | |
| 1490 | // Functions with 'a' (the splat code) in the type prototype should not get |
| 1491 | // their own builtin as they use the non-splat variant. |
| 1492 | if (Proto.find('a') != std::string::npos) |
| 1493 | continue; |
| 1494 | |
| 1495 | // Functions which have a scalar argument cannot be overloaded, no need to |
| 1496 | // check them if we are emitting the type checking code. |
| 1497 | if (Proto.find('s') != std::string::npos) |
| 1498 | continue; |
| 1499 | |
| 1500 | SmallVector<StringRef, 16> TypeVec; |
| 1501 | ParseTypes(R, Types, TypeVec); |
| 1502 | |
| 1503 | if (R->getSuperClasses().size() < 2) |
| 1504 | throw TGError(R->getLoc(), "Builtin has no class kind"); |
| 1505 | |
| 1506 | int si = -1, qi = -1; |
| 1507 | unsigned mask = 0, qmask = 0; |
| 1508 | for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) { |
| 1509 | // Generate the switch case(s) for this builtin for the type validation. |
| 1510 | bool quad = false, poly = false, usgn = false; |
| 1511 | (void) ClassifyType(TypeVec[ti], quad, poly, usgn); |
| 1512 | |
| 1513 | if (quad) { |
| 1514 | qi = ti; |
| 1515 | qmask |= 1 << GetNeonEnum(Proto, TypeVec[ti]); |
| 1516 | } else { |
| 1517 | si = ti; |
| 1518 | mask |= 1 << GetNeonEnum(Proto, TypeVec[ti]); |
| 1519 | } |
| 1520 | } |
Bob Wilson | 4648255 | 2011-11-16 21:32:23 +0000 | [diff] [blame] | 1521 | |
| 1522 | // Check if the builtin function has a pointer or const pointer argument. |
| 1523 | int PtrArgNum = -1; |
| 1524 | bool HasConstPtr = false; |
| 1525 | for (unsigned arg = 1, arge = Proto.size(); arg != arge; ++arg) { |
| 1526 | char ArgType = Proto[arg]; |
| 1527 | if (ArgType == 'c') { |
| 1528 | HasConstPtr = true; |
| 1529 | PtrArgNum = arg - 1; |
| 1530 | break; |
| 1531 | } |
| 1532 | if (ArgType == 'p') { |
| 1533 | PtrArgNum = arg - 1; |
| 1534 | break; |
| 1535 | } |
| 1536 | } |
| 1537 | // For sret builtins, adjust the pointer argument index. |
| 1538 | if (PtrArgNum >= 0 && (Proto[0] >= '2' && Proto[0] <= '4')) |
| 1539 | PtrArgNum += 1; |
| 1540 | |
Bob Wilson | 9082cdd | 2011-12-20 06:16:48 +0000 | [diff] [blame] | 1541 | // Omit type checking for the pointer arguments of vld1_lane, vld1_dup, |
| 1542 | // and vst1_lane intrinsics. Using a pointer to the vector element |
| 1543 | // type with one of those operations causes codegen to select an aligned |
| 1544 | // load/store instruction. If you want an unaligned operation, |
| 1545 | // the pointer argument needs to have less alignment than element type, |
| 1546 | // so just accept any pointer type. |
| 1547 | if (name == "vld1_lane" || name == "vld1_dup" || name == "vst1_lane") { |
| 1548 | PtrArgNum = -1; |
| 1549 | HasConstPtr = false; |
| 1550 | } |
| 1551 | |
Bob Wilson | 6f9f03e | 2011-11-08 05:04:11 +0000 | [diff] [blame] | 1552 | if (mask) { |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1553 | OS << "case ARM::BI__builtin_neon_" |
| 1554 | << MangleName(name, TypeVec[si], ClassB) |
Bob Wilson | 6f9f03e | 2011-11-08 05:04:11 +0000 | [diff] [blame] | 1555 | << ": mask = " << "0x" << utohexstr(mask); |
Bob Wilson | 4648255 | 2011-11-16 21:32:23 +0000 | [diff] [blame] | 1556 | if (PtrArgNum >= 0) |
| 1557 | OS << "; PtrArgNum = " << PtrArgNum; |
Bob Wilson | 6f9f03e | 2011-11-08 05:04:11 +0000 | [diff] [blame] | 1558 | if (HasConstPtr) |
| 1559 | OS << "; HasConstPtr = true"; |
| 1560 | OS << "; break;\n"; |
| 1561 | } |
| 1562 | if (qmask) { |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1563 | OS << "case ARM::BI__builtin_neon_" |
| 1564 | << MangleName(name, TypeVec[qi], ClassB) |
Bob Wilson | 6f9f03e | 2011-11-08 05:04:11 +0000 | [diff] [blame] | 1565 | << ": mask = " << "0x" << utohexstr(qmask); |
Bob Wilson | 4648255 | 2011-11-16 21:32:23 +0000 | [diff] [blame] | 1566 | if (PtrArgNum >= 0) |
| 1567 | OS << "; PtrArgNum = " << PtrArgNum; |
Bob Wilson | 6f9f03e | 2011-11-08 05:04:11 +0000 | [diff] [blame] | 1568 | if (HasConstPtr) |
| 1569 | OS << "; HasConstPtr = true"; |
| 1570 | OS << "; break;\n"; |
| 1571 | } |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1572 | } |
| 1573 | OS << "#endif\n\n"; |
| 1574 | |
| 1575 | // Generate the intrinsic range checking code for shift/lane immediates. |
| 1576 | OS << "#ifdef GET_NEON_IMMEDIATE_CHECK\n"; |
| 1577 | for (unsigned i = 0, e = RV.size(); i != e; ++i) { |
| 1578 | Record *R = RV[i]; |
| 1579 | |
| 1580 | OpKind k = OpMap[R->getValueAsDef("Operand")->getName()]; |
| 1581 | if (k != OpNone) |
| 1582 | continue; |
| 1583 | |
| 1584 | std::string name = R->getValueAsString("Name"); |
| 1585 | std::string Proto = R->getValueAsString("Prototype"); |
| 1586 | std::string Types = R->getValueAsString("Types"); |
| 1587 | |
| 1588 | // Functions with 'a' (the splat code) in the type prototype should not get |
| 1589 | // their own builtin as they use the non-splat variant. |
| 1590 | if (Proto.find('a') != std::string::npos) |
| 1591 | continue; |
| 1592 | |
| 1593 | // Functions which do not have an immediate do not need to have range |
| 1594 | // checking code emitted. |
| 1595 | size_t immPos = Proto.find('i'); |
| 1596 | if (immPos == std::string::npos) |
| 1597 | continue; |
| 1598 | |
| 1599 | SmallVector<StringRef, 16> TypeVec; |
| 1600 | ParseTypes(R, Types, TypeVec); |
| 1601 | |
| 1602 | if (R->getSuperClasses().size() < 2) |
| 1603 | throw TGError(R->getLoc(), "Builtin has no class kind"); |
| 1604 | |
| 1605 | ClassKind ck = ClassMap[R->getSuperClasses()[1]]; |
| 1606 | |
| 1607 | for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) { |
| 1608 | std::string namestr, shiftstr, rangestr; |
| 1609 | |
| 1610 | if (R->getValueAsBit("isVCVT_N")) { |
| 1611 | // VCVT between floating- and fixed-point values takes an immediate |
| 1612 | // in the range 1 to 32. |
| 1613 | ck = ClassB; |
| 1614 | rangestr = "l = 1; u = 31"; // upper bound = l + u |
| 1615 | } else if (Proto.find('s') == std::string::npos) { |
| 1616 | // Builtins which are overloaded by type will need to have their upper |
| 1617 | // bound computed at Sema time based on the type constant. |
| 1618 | ck = ClassB; |
| 1619 | if (R->getValueAsBit("isShift")) { |
| 1620 | shiftstr = ", true"; |
| 1621 | |
| 1622 | // Right shifts have an 'r' in the name, left shifts do not. |
| 1623 | if (name.find('r') != std::string::npos) |
| 1624 | rangestr = "l = 1; "; |
| 1625 | } |
| 1626 | rangestr += "u = RFT(TV" + shiftstr + ")"; |
| 1627 | } else { |
| 1628 | // The immediate generally refers to a lane in the preceding argument. |
| 1629 | assert(immPos > 0 && "unexpected immediate operand"); |
| 1630 | rangestr = "u = " + utostr(RangeFromType(Proto[immPos-1], TypeVec[ti])); |
| 1631 | } |
| 1632 | // Make sure cases appear only once by uniquing them in a string map. |
| 1633 | namestr = MangleName(name, TypeVec[ti], ck); |
| 1634 | if (EmittedMap.count(namestr)) |
| 1635 | continue; |
| 1636 | EmittedMap[namestr] = OpNone; |
| 1637 | |
| 1638 | // Calculate the index of the immediate that should be range checked. |
| 1639 | unsigned immidx = 0; |
| 1640 | |
| 1641 | // Builtins that return a struct of multiple vectors have an extra |
| 1642 | // leading arg for the struct return. |
| 1643 | if (Proto[0] >= '2' && Proto[0] <= '4') |
| 1644 | ++immidx; |
| 1645 | |
| 1646 | // Add one to the index for each argument until we reach the immediate |
| 1647 | // to be checked. Structs of vectors are passed as multiple arguments. |
| 1648 | for (unsigned ii = 1, ie = Proto.size(); ii != ie; ++ii) { |
| 1649 | switch (Proto[ii]) { |
| 1650 | default: immidx += 1; break; |
| 1651 | case '2': immidx += 2; break; |
| 1652 | case '3': immidx += 3; break; |
| 1653 | case '4': immidx += 4; break; |
| 1654 | case 'i': ie = ii + 1; break; |
| 1655 | } |
| 1656 | } |
| 1657 | OS << "case ARM::BI__builtin_neon_" << MangleName(name, TypeVec[ti], ck) |
| 1658 | << ": i = " << immidx << "; " << rangestr << "; break;\n"; |
| 1659 | } |
| 1660 | } |
| 1661 | OS << "#endif\n\n"; |
| 1662 | } |
| 1663 | |
| 1664 | /// GenTest - Write out a test for the intrinsic specified by the name and |
| 1665 | /// type strings, including the embedded patterns for FileCheck to match. |
| 1666 | static std::string GenTest(const std::string &name, |
| 1667 | const std::string &proto, |
| 1668 | StringRef outTypeStr, StringRef inTypeStr, |
| 1669 | bool isShift) { |
| 1670 | assert(!proto.empty() && ""); |
| 1671 | std::string s; |
| 1672 | |
| 1673 | // Function name with type suffix |
| 1674 | std::string mangledName = MangleName(name, outTypeStr, ClassS); |
| 1675 | if (outTypeStr != inTypeStr) { |
| 1676 | // If the input type is different (e.g., for vreinterpret), append a suffix |
| 1677 | // for the input type. String off a "Q" (quad) prefix so that MangleName |
| 1678 | // does not insert another "q" in the name. |
| 1679 | unsigned typeStrOff = (inTypeStr[0] == 'Q' ? 1 : 0); |
| 1680 | StringRef inTypeNoQuad = inTypeStr.substr(typeStrOff); |
| 1681 | mangledName = MangleName(mangledName, inTypeNoQuad, ClassS); |
| 1682 | } |
| 1683 | |
| 1684 | // Emit the FileCheck patterns. |
| 1685 | s += "// CHECK: test_" + mangledName + "\n"; |
| 1686 | // s += "// CHECK: \n"; // FIXME: + expected instruction opcode. |
| 1687 | |
| 1688 | // Emit the start of the test function. |
| 1689 | s += TypeString(proto[0], outTypeStr) + " test_" + mangledName + "("; |
| 1690 | char arg = 'a'; |
| 1691 | std::string comma; |
| 1692 | for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) { |
| 1693 | // Do not create arguments for values that must be immediate constants. |
| 1694 | if (proto[i] == 'i') |
| 1695 | continue; |
| 1696 | s += comma + TypeString(proto[i], inTypeStr) + " "; |
| 1697 | s.push_back(arg); |
| 1698 | comma = ", "; |
| 1699 | } |
Jim Grosbach | b4a5425 | 2012-05-30 18:18:29 +0000 | [diff] [blame] | 1700 | s += ") {\n "; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1701 | |
| 1702 | if (proto[0] != 'v') |
| 1703 | s += "return "; |
| 1704 | s += mangledName + "("; |
| 1705 | arg = 'a'; |
| 1706 | for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) { |
| 1707 | if (proto[i] == 'i') { |
| 1708 | // For immediate operands, test the maximum value. |
| 1709 | if (isShift) |
| 1710 | s += "1"; // FIXME |
| 1711 | else |
| 1712 | // The immediate generally refers to a lane in the preceding argument. |
| 1713 | s += utostr(RangeFromType(proto[i-1], inTypeStr)); |
| 1714 | } else { |
| 1715 | s.push_back(arg); |
| 1716 | } |
| 1717 | if ((i + 1) < e) |
| 1718 | s += ", "; |
| 1719 | } |
| 1720 | s += ");\n}\n\n"; |
| 1721 | return s; |
| 1722 | } |
| 1723 | |
| 1724 | /// runTests - Write out a complete set of tests for all of the Neon |
| 1725 | /// intrinsics. |
| 1726 | void NeonEmitter::runTests(raw_ostream &OS) { |
| 1727 | OS << |
| 1728 | "// RUN: %clang_cc1 -triple thumbv7-apple-darwin \\\n" |
| 1729 | "// RUN: -target-cpu cortex-a9 -ffreestanding -S -o - %s | FileCheck %s\n" |
| 1730 | "\n" |
| 1731 | "#include <arm_neon.h>\n" |
| 1732 | "\n"; |
| 1733 | |
| 1734 | std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst"); |
| 1735 | for (unsigned i = 0, e = RV.size(); i != e; ++i) { |
| 1736 | Record *R = RV[i]; |
| 1737 | std::string name = R->getValueAsString("Name"); |
| 1738 | std::string Proto = R->getValueAsString("Prototype"); |
| 1739 | std::string Types = R->getValueAsString("Types"); |
| 1740 | bool isShift = R->getValueAsBit("isShift"); |
| 1741 | |
| 1742 | SmallVector<StringRef, 16> TypeVec; |
| 1743 | ParseTypes(R, Types, TypeVec); |
| 1744 | |
| 1745 | OpKind kind = OpMap[R->getValueAsDef("Operand")->getName()]; |
Jim Grosbach | 667381b | 2012-05-09 18:17:30 +0000 | [diff] [blame] | 1746 | if (kind == OpUnavailable) |
| 1747 | continue; |
Peter Collingbourne | 51d7777 | 2011-10-06 13:03:08 +0000 | [diff] [blame] | 1748 | for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) { |
| 1749 | if (kind == OpReinterpret) { |
| 1750 | bool outQuad = false; |
| 1751 | bool dummy = false; |
| 1752 | (void)ClassifyType(TypeVec[ti], outQuad, dummy, dummy); |
| 1753 | for (unsigned srcti = 0, srcte = TypeVec.size(); |
| 1754 | srcti != srcte; ++srcti) { |
| 1755 | bool inQuad = false; |
| 1756 | (void)ClassifyType(TypeVec[srcti], inQuad, dummy, dummy); |
| 1757 | if (srcti == ti || inQuad != outQuad) |
| 1758 | continue; |
| 1759 | OS << GenTest(name, Proto, TypeVec[ti], TypeVec[srcti], isShift); |
| 1760 | } |
| 1761 | } else { |
| 1762 | OS << GenTest(name, Proto, TypeVec[ti], TypeVec[ti], isShift); |
| 1763 | } |
| 1764 | } |
| 1765 | OS << "\n"; |
| 1766 | } |
| 1767 | } |
| 1768 | |
Jakob Stoklund Olesen | 3cc509b | 2012-06-13 05:12:41 +0000 | [diff] [blame] | 1769 | namespace clang { |
| 1770 | void EmitNeon(RecordKeeper &Records, raw_ostream &OS) { |
| 1771 | NeonEmitter(Records).run(OS); |
| 1772 | } |
| 1773 | void EmitNeonSema(RecordKeeper &Records, raw_ostream &OS) { |
| 1774 | NeonEmitter(Records).runHeader(OS); |
| 1775 | } |
| 1776 | void EmitNeonTest(RecordKeeper &Records, raw_ostream &OS) { |
| 1777 | NeonEmitter(Records).runTests(OS); |
| 1778 | } |
| 1779 | } // End namespace clang |