1 //===- CodeGen/ValueTypes.h - Low-Level Target independ. types --*- 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 file defines the set of low-level target independent types which various 11 // values in the code generator are. This allows the target specific behavior 12 // of instructions to be described to target independent passes. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_CODEGEN_VALUETYPES_H 17 #define LLVM_CODEGEN_VALUETYPES_H 18 19 #include "llvm/Support/DataTypes.h" 20 #include "llvm/Support/ErrorHandling.h" 21 #include "llvm/Support/MathExtras.h" 22 #include <cassert> 23 #include <string> 24 25 namespace llvm { 26 class Type; 27 class LLVMContext; 28 struct EVT; 29 30 /// MVT - Machine Value Type. Every type that is supported natively by some 31 /// processor targeted by LLVM occurs here. This means that any legal value 32 /// type can be represented by a MVT. 33 class MVT { 34 public: 35 enum SimpleValueType { 36 // INVALID_SIMPLE_VALUE_TYPE - Simple value types less than zero are 37 // considered extended value types. 38 INVALID_SIMPLE_VALUE_TYPE = -1, 39 40 // If you change this numbering, you must change the values in 41 // ValueTypes.td as well! 42 Other = 0, // This is a non-standard value 43 i1 = 1, // This is a 1 bit integer value 44 i8 = 2, // This is an 8 bit integer value 45 i16 = 3, // This is a 16 bit integer value 46 i32 = 4, // This is a 32 bit integer value 47 i64 = 5, // This is a 64 bit integer value 48 i128 = 6, // This is a 128 bit integer value 49 50 FIRST_INTEGER_VALUETYPE = i1, 51 LAST_INTEGER_VALUETYPE = i128, 52 53 f16 = 7, // This is a 16 bit floating point value 54 f32 = 8, // This is a 32 bit floating point value 55 f64 = 9, // This is a 64 bit floating point value 56 f80 = 10, // This is a 80 bit floating point value 57 f128 = 11, // This is a 128 bit floating point value 58 ppcf128 = 12, // This is a PPC 128-bit floating point value 59 60 FIRST_FP_VALUETYPE = f16, 61 LAST_FP_VALUETYPE = ppcf128, 62 63 v2i1 = 13, // 2 x i1 64 v4i1 = 14, // 4 x i1 65 v8i1 = 15, // 8 x i1 66 v16i1 = 16, // 16 x i1 67 v32i1 = 17, // 32 x i1 68 v64i1 = 18, // 64 x i1 69 70 v2i8 = 19, // 2 x i8 71 v4i8 = 20, // 4 x i8 72 v8i8 = 21, // 8 x i8 73 v16i8 = 22, // 16 x i8 74 v32i8 = 23, // 32 x i8 75 v64i8 = 24, // 64 x i8 76 v1i16 = 25, // 1 x i16 77 v2i16 = 26, // 2 x i16 78 v4i16 = 27, // 4 x i16 79 v8i16 = 28, // 8 x i16 80 v16i16 = 29, // 16 x i16 81 v32i16 = 30, // 32 x i16 82 v1i32 = 31, // 1 x i32 83 v2i32 = 32, // 2 x i32 84 v4i32 = 33, // 4 x i32 85 v8i32 = 34, // 8 x i32 86 v16i32 = 35, // 16 x i32 87 v1i64 = 36, // 1 x i64 88 v2i64 = 37, // 2 x i64 89 v4i64 = 38, // 4 x i64 90 v8i64 = 39, // 8 x i64 91 v16i64 = 40, // 16 x i64 92 93 FIRST_INTEGER_VECTOR_VALUETYPE = v2i1, 94 LAST_INTEGER_VECTOR_VALUETYPE = v16i64, 95 96 v2f16 = 41, // 2 x f16 97 v2f32 = 42, // 2 x f32 98 v4f32 = 43, // 4 x f32 99 v8f32 = 44, // 8 x f32 100 v16f32 = 45, // 16 x f32 101 v2f64 = 46, // 2 x f64 102 v4f64 = 47, // 4 x f64 103 v8f64 = 48, // 8 x f64 104 105 FIRST_FP_VECTOR_VALUETYPE = v2f16, 106 LAST_FP_VECTOR_VALUETYPE = v8f64, 107 108 FIRST_VECTOR_VALUETYPE = v2i1, 109 LAST_VECTOR_VALUETYPE = v8f64, 110 111 x86mmx = 49, // This is an X86 MMX value 112 113 Glue = 50, // This glues nodes together during pre-RA sched 114 115 isVoid = 51, // This has no value 116 117 Untyped = 52, // This value takes a register, but has 118 // unspecified type. The register class 119 // will be determined by the opcode. 120 121 LAST_VALUETYPE = 53, // This always remains at the end of the list. 122 123 // This is the current maximum for LAST_VALUETYPE. 124 // MVT::MAX_ALLOWED_VALUETYPE is used for asserts and to size bit vectors 125 // This value must be a multiple of 32. 126 MAX_ALLOWED_VALUETYPE = 64, 127 128 // Metadata - This is MDNode or MDString. 129 Metadata = 250, 130 131 // iPTRAny - An int value the size of the pointer of the current 132 // target to any address space. This must only be used internal to 133 // tblgen. Other than for overloading, we treat iPTRAny the same as iPTR. 134 iPTRAny = 251, 135 136 // vAny - A vector with any length and element size. This is used 137 // for intrinsics that have overloadings based on vector types. 138 // This is only for tblgen's consumption! 139 vAny = 252, 140 141 // fAny - Any floating-point or vector floating-point value. This is used 142 // for intrinsics that have overloadings based on floating-point types. 143 // This is only for tblgen's consumption! 144 fAny = 253, 145 146 // iAny - An integer or vector integer value of any bit width. This is 147 // used for intrinsics that have overloadings based on integer bit widths. 148 // This is only for tblgen's consumption! 149 iAny = 254, 150 151 // iPTR - An int value the size of the pointer of the current 152 // target. This should only be used internal to tblgen! 153 iPTR = 255 154 }; 155 156 SimpleValueType SimpleTy; 157 158 MVT() : SimpleTy((SimpleValueType)(INVALID_SIMPLE_VALUE_TYPE)) {} 159 MVT(SimpleValueType SVT) : SimpleTy(SVT) { } 160 161 bool operator>(const MVT& S) const { return SimpleTy > S.SimpleTy; } 162 bool operator<(const MVT& S) const { return SimpleTy < S.SimpleTy; } 163 bool operator==(const MVT& S) const { return SimpleTy == S.SimpleTy; } 164 bool operator!=(const MVT& S) const { return SimpleTy != S.SimpleTy; } 165 bool operator>=(const MVT& S) const { return SimpleTy >= S.SimpleTy; } 166 bool operator<=(const MVT& S) const { return SimpleTy <= S.SimpleTy; } 167 168 /// isFloatingPoint - Return true if this is a FP, or a vector FP type. 169 bool isFloatingPoint() const { 170 return ((SimpleTy >= MVT::FIRST_FP_VALUETYPE && 171 SimpleTy <= MVT::LAST_FP_VALUETYPE) || 172 (SimpleTy >= MVT::FIRST_FP_VECTOR_VALUETYPE && 173 SimpleTy <= MVT::LAST_FP_VECTOR_VALUETYPE)); 174 } 175 176 /// isInteger - Return true if this is an integer, or a vector integer type. 177 bool isInteger() const { 178 return ((SimpleTy >= MVT::FIRST_INTEGER_VALUETYPE && 179 SimpleTy <= MVT::LAST_INTEGER_VALUETYPE) || 180 (SimpleTy >= MVT::FIRST_INTEGER_VECTOR_VALUETYPE && 181 SimpleTy <= MVT::LAST_INTEGER_VECTOR_VALUETYPE)); 182 } 183 184 /// isVector - Return true if this is a vector value type. 185 bool isVector() const { 186 return (SimpleTy >= MVT::FIRST_VECTOR_VALUETYPE && 187 SimpleTy <= MVT::LAST_VECTOR_VALUETYPE); 188 } 189 190 /// is16BitVector - Return true if this is a 16-bit vector type. 191 bool is16BitVector() const { 192 return (SimpleTy == MVT::v2i8 || SimpleTy == MVT::v1i16 || 193 SimpleTy == MVT::v16i1); 194 } 195 196 /// is32BitVector - Return true if this is a 32-bit vector type. 197 bool is32BitVector() const { 198 return (SimpleTy == MVT::v4i8 || SimpleTy == MVT::v2i16 || 199 SimpleTy == MVT::v1i32); 200 } 201 202 /// is64BitVector - Return true if this is a 64-bit vector type. 203 bool is64BitVector() const { 204 return (SimpleTy == MVT::v8i8 || SimpleTy == MVT::v4i16 || 205 SimpleTy == MVT::v2i32 || SimpleTy == MVT::v1i64 || 206 SimpleTy == MVT::v2f32); 207 } 208 209 /// is128BitVector - Return true if this is a 128-bit vector type. 210 bool is128BitVector() const { 211 return (SimpleTy == MVT::v16i8 || SimpleTy == MVT::v8i16 || 212 SimpleTy == MVT::v4i32 || SimpleTy == MVT::v2i64 || 213 SimpleTy == MVT::v4f32 || SimpleTy == MVT::v2f64); 214 } 215 216 /// is256BitVector - Return true if this is a 256-bit vector type. 217 bool is256BitVector() const { 218 return (SimpleTy == MVT::v8f32 || SimpleTy == MVT::v4f64 || 219 SimpleTy == MVT::v32i8 || SimpleTy == MVT::v16i16 || 220 SimpleTy == MVT::v8i32 || SimpleTy == MVT::v4i64); 221 } 222 223 /// is512BitVector - Return true if this is a 512-bit vector type. 224 bool is512BitVector() const { 225 return (SimpleTy == MVT::v8f64 || SimpleTy == MVT::v16f32 || 226 SimpleTy == MVT::v64i8 || SimpleTy == MVT::v32i16 || 227 SimpleTy == MVT::v8i64 || SimpleTy == MVT::v16i32); 228 } 229 230 /// is1024BitVector - Return true if this is a 1024-bit vector type. 231 bool is1024BitVector() const { 232 return (SimpleTy == MVT::v16i64); 233 } 234 235 /// isPow2VectorType - Returns true if the given vector is a power of 2. 236 bool isPow2VectorType() const { 237 unsigned NElts = getVectorNumElements(); 238 return !(NElts & (NElts - 1)); 239 } 240 241 /// getPow2VectorType - Widens the length of the given vector MVT up to 242 /// the nearest power of 2 and returns that type. 243 MVT getPow2VectorType() const { 244 if (isPow2VectorType()) 245 return *this; 246 247 unsigned NElts = getVectorNumElements(); 248 unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts); 249 return MVT::getVectorVT(getVectorElementType(), Pow2NElts); 250 } 251 252 /// getScalarType - If this is a vector type, return the element type, 253 /// otherwise return this. 254 MVT getScalarType() const { 255 return isVector() ? getVectorElementType() : *this; 256 } 257 258 MVT getVectorElementType() const { 259 switch (SimpleTy) { 260 default: 261 llvm_unreachable("Not a vector MVT!"); 262 case v2i1 : 263 case v4i1 : 264 case v8i1 : 265 case v16i1 : 266 case v32i1 : 267 case v64i1: return i1; 268 case v2i8 : 269 case v4i8 : 270 case v8i8 : 271 case v16i8: 272 case v32i8: 273 case v64i8: return i8; 274 case v1i16: 275 case v2i16: 276 case v4i16: 277 case v8i16: 278 case v16i16: 279 case v32i16: return i16; 280 case v1i32: 281 case v2i32: 282 case v4i32: 283 case v8i32: 284 case v16i32: return i32; 285 case v1i64: 286 case v2i64: 287 case v4i64: 288 case v8i64: 289 case v16i64: return i64; 290 case v2f16: return f16; 291 case v2f32: 292 case v4f32: 293 case v8f32: 294 case v16f32: return f32; 295 case v2f64: 296 case v4f64: 297 case v8f64: return f64; 298 } 299 } 300 301 unsigned getVectorNumElements() const { 302 switch (SimpleTy) { 303 default: 304 llvm_unreachable("Not a vector MVT!"); 305 case v32i1: 306 case v32i8: 307 case v32i16: return 32; 308 case v64i1: 309 case v64i8: return 64; 310 case v16i1: 311 case v16i8: 312 case v16i16: 313 case v16i32: 314 case v16i64: 315 case v16f32: return 16; 316 case v8i1 : 317 case v8i8 : 318 case v8i16: 319 case v8i32: 320 case v8i64: 321 case v8f32: 322 case v8f64: return 8; 323 case v4i1: 324 case v4i8: 325 case v4i16: 326 case v4i32: 327 case v4i64: 328 case v4f32: 329 case v4f64: return 4; 330 case v2i1: 331 case v2i8: 332 case v2i16: 333 case v2i32: 334 case v2i64: 335 case v2f16: 336 case v2f32: 337 case v2f64: return 2; 338 case v1i16: 339 case v1i32: 340 case v1i64: return 1; 341 } 342 } 343 344 unsigned getSizeInBits() const { 345 switch (SimpleTy) { 346 default: 347 llvm_unreachable("getSizeInBits called on extended MVT."); 348 case Other: 349 llvm_unreachable("Value type is non-standard value, Other."); 350 case iPTR: 351 llvm_unreachable("Value type size is target-dependent. Ask TLI."); 352 case iPTRAny: 353 case iAny: 354 case fAny: 355 case vAny: 356 llvm_unreachable("Value type is overloaded."); 357 case Metadata: 358 llvm_unreachable("Value type is metadata."); 359 case i1 : return 1; 360 case v2i1: return 2; 361 case v4i1: return 4; 362 case i8 : 363 case v8i1: return 8; 364 case i16 : 365 case f16: 366 case v16i1: 367 case v2i8: 368 case v1i16: return 16; 369 case f32 : 370 case i32 : 371 case v32i1: 372 case v4i8: 373 case v2i16: 374 case v2f16: 375 case v1i32: return 32; 376 case x86mmx: 377 case f64 : 378 case i64 : 379 case v64i1: 380 case v8i8: 381 case v4i16: 382 case v2i32: 383 case v1i64: 384 case v2f32: return 64; 385 case f80 : return 80; 386 case f128: 387 case ppcf128: 388 case i128: 389 case v16i8: 390 case v8i16: 391 case v4i32: 392 case v2i64: 393 case v4f32: 394 case v2f64: return 128; 395 case v32i8: 396 case v16i16: 397 case v8i32: 398 case v4i64: 399 case v8f32: 400 case v4f64: return 256; 401 case v64i8: 402 case v32i16: 403 case v16i32: 404 case v8i64: 405 case v16f32: 406 case v8f64: return 512; 407 case v16i64:return 1024; 408 } 409 } 410 411 /// getStoreSize - Return the number of bytes overwritten by a store 412 /// of the specified value type. 413 unsigned getStoreSize() const { 414 return (getSizeInBits() + 7) / 8; 415 } 416 417 /// getStoreSizeInBits - Return the number of bits overwritten by a store 418 /// of the specified value type. 419 unsigned getStoreSizeInBits() const { 420 return getStoreSize() * 8; 421 } 422 423 /// Return true if this has more bits than VT. 424 bool bitsGT(MVT VT) const { 425 return getSizeInBits() > VT.getSizeInBits(); 426 } 427 428 /// Return true if this has no less bits than VT. 429 bool bitsGE(MVT VT) const { 430 return getSizeInBits() >= VT.getSizeInBits(); 431 } 432 433 /// Return true if this has less bits than VT. 434 bool bitsLT(MVT VT) const { 435 return getSizeInBits() < VT.getSizeInBits(); 436 } 437 438 /// Return true if this has no more bits than VT. 439 bool bitsLE(MVT VT) const { 440 return getSizeInBits() <= VT.getSizeInBits(); 441 } 442 443 444 static MVT getFloatingPointVT(unsigned BitWidth) { 445 switch (BitWidth) { 446 default: 447 llvm_unreachable("Bad bit width!"); 448 case 16: 449 return MVT::f16; 450 case 32: 451 return MVT::f32; 452 case 64: 453 return MVT::f64; 454 case 80: 455 return MVT::f80; 456 case 128: 457 return MVT::f128; 458 } 459 } 460 461 static MVT getIntegerVT(unsigned BitWidth) { 462 switch (BitWidth) { 463 default: 464 return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE); 465 case 1: 466 return MVT::i1; 467 case 8: 468 return MVT::i8; 469 case 16: 470 return MVT::i16; 471 case 32: 472 return MVT::i32; 473 case 64: 474 return MVT::i64; 475 case 128: 476 return MVT::i128; 477 } 478 } 479 480 static MVT getVectorVT(MVT VT, unsigned NumElements) { 481 switch (VT.SimpleTy) { 482 default: 483 break; 484 case MVT::i1: 485 if (NumElements == 2) return MVT::v2i1; 486 if (NumElements == 4) return MVT::v4i1; 487 if (NumElements == 8) return MVT::v8i1; 488 if (NumElements == 16) return MVT::v16i1; 489 if (NumElements == 32) return MVT::v32i1; 490 if (NumElements == 64) return MVT::v64i1; 491 break; 492 case MVT::i8: 493 if (NumElements == 2) return MVT::v2i8; 494 if (NumElements == 4) return MVT::v4i8; 495 if (NumElements == 8) return MVT::v8i8; 496 if (NumElements == 16) return MVT::v16i8; 497 if (NumElements == 32) return MVT::v32i8; 498 if (NumElements == 64) return MVT::v64i8; 499 break; 500 case MVT::i16: 501 if (NumElements == 1) return MVT::v1i16; 502 if (NumElements == 2) return MVT::v2i16; 503 if (NumElements == 4) return MVT::v4i16; 504 if (NumElements == 8) return MVT::v8i16; 505 if (NumElements == 16) return MVT::v16i16; 506 if (NumElements == 32) return MVT::v32i16; 507 break; 508 case MVT::i32: 509 if (NumElements == 1) return MVT::v1i32; 510 if (NumElements == 2) return MVT::v2i32; 511 if (NumElements == 4) return MVT::v4i32; 512 if (NumElements == 8) return MVT::v8i32; 513 if (NumElements == 16) return MVT::v16i32; 514 break; 515 case MVT::i64: 516 if (NumElements == 1) return MVT::v1i64; 517 if (NumElements == 2) return MVT::v2i64; 518 if (NumElements == 4) return MVT::v4i64; 519 if (NumElements == 8) return MVT::v8i64; 520 if (NumElements == 16) return MVT::v16i64; 521 break; 522 case MVT::f16: 523 if (NumElements == 2) return MVT::v2f16; 524 break; 525 case MVT::f32: 526 if (NumElements == 2) return MVT::v2f32; 527 if (NumElements == 4) return MVT::v4f32; 528 if (NumElements == 8) return MVT::v8f32; 529 if (NumElements == 16) return MVT::v16f32; 530 break; 531 case MVT::f64: 532 if (NumElements == 2) return MVT::v2f64; 533 if (NumElements == 4) return MVT::v4f64; 534 if (NumElements == 8) return MVT::v8f64; 535 break; 536 } 537 return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE); 538 } 539 540 /// Return the value type corresponding to the specified type. This returns 541 /// all pointers as iPTR. If HandleUnknown is true, unknown types are 542 /// returned as Other, otherwise they are invalid. 543 static MVT getVT(Type *Ty, bool HandleUnknown = false); 544 545 }; 546 547 548 /// EVT - Extended Value Type. Capable of holding value types which are not 549 /// native for any processor (such as the i12345 type), as well as the types 550 /// a MVT can represent. 551 struct EVT { 552 private: 553 MVT V; 554 Type *LLVMTy; 555 556 public: 557 EVT() : V((MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE)), 558 LLVMTy(0) {} 559 EVT(MVT::SimpleValueType SVT) : V(SVT), LLVMTy(0) { } 560 EVT(MVT S) : V(S), LLVMTy(0) {} 561 562 bool operator==(EVT VT) const { 563 return !(*this != VT); 564 } 565 bool operator!=(EVT VT) const { 566 if (V.SimpleTy != VT.V.SimpleTy) 567 return true; 568 if (V.SimpleTy < 0) 569 return LLVMTy != VT.LLVMTy; 570 return false; 571 } 572 573 /// getFloatingPointVT - Returns the EVT that represents a floating point 574 /// type with the given number of bits. There are two floating point types 575 /// with 128 bits - this returns f128 rather than ppcf128. 576 static EVT getFloatingPointVT(unsigned BitWidth) { 577 return MVT::getFloatingPointVT(BitWidth); 578 } 579 580 /// getIntegerVT - Returns the EVT that represents an integer with the given 581 /// number of bits. 582 static EVT getIntegerVT(LLVMContext &Context, unsigned BitWidth) { 583 MVT M = MVT::getIntegerVT(BitWidth); 584 if (M.SimpleTy >= 0) 585 return M; 586 return getExtendedIntegerVT(Context, BitWidth); 587 } 588 589 /// getVectorVT - Returns the EVT that represents a vector NumElements in 590 /// length, where each element is of type VT. 591 static EVT getVectorVT(LLVMContext &Context, EVT VT, unsigned NumElements) { 592 MVT M = MVT::getVectorVT(VT.V, NumElements); 593 if (M.SimpleTy >= 0) 594 return M; 595 return getExtendedVectorVT(Context, VT, NumElements); 596 } 597 598 /// changeVectorElementTypeToInteger - Return a vector with the same number 599 /// of elements as this vector, but with the element type converted to an 600 /// integer type with the same bitwidth. 601 EVT changeVectorElementTypeToInteger() const { 602 if (!isSimple()) 603 return changeExtendedVectorElementTypeToInteger(); 604 MVT EltTy = getSimpleVT().getVectorElementType(); 605 unsigned BitWidth = EltTy.getSizeInBits(); 606 MVT IntTy = MVT::getIntegerVT(BitWidth); 607 MVT VecTy = MVT::getVectorVT(IntTy, getVectorNumElements()); 608 assert(VecTy.SimpleTy >= 0 && 609 "Simple vector VT not representable by simple integer vector VT!"); 610 return VecTy; 611 } 612 613 /// isSimple - Test if the given EVT is simple (as opposed to being 614 /// extended). 615 bool isSimple() const { 616 return V.SimpleTy >= 0; 617 } 618 619 /// isExtended - Test if the given EVT is extended (as opposed to 620 /// being simple). 621 bool isExtended() const { 622 return !isSimple(); 623 } 624 625 /// isFloatingPoint - Return true if this is a FP, or a vector FP type. 626 bool isFloatingPoint() const { 627 return isSimple() ? V.isFloatingPoint() : isExtendedFloatingPoint(); 628 } 629 630 /// isInteger - Return true if this is an integer, or a vector integer type. 631 bool isInteger() const { 632 return isSimple() ? V.isInteger() : isExtendedInteger(); 633 } 634 635 /// isVector - Return true if this is a vector value type. 636 bool isVector() const { 637 return isSimple() ? V.isVector() : isExtendedVector(); 638 } 639 640 /// is16BitVector - Return true if this is a 16-bit vector type. 641 bool is16BitVector() const { 642 return isSimple() ? V.is16BitVector() : isExtended16BitVector(); 643 } 644 645 /// is32BitVector - Return true if this is a 32-bit vector type. 646 bool is32BitVector() const { 647 return isSimple() ? V.is32BitVector() : isExtended32BitVector(); 648 } 649 650 /// is64BitVector - Return true if this is a 64-bit vector type. 651 bool is64BitVector() const { 652 return isSimple() ? V.is64BitVector() : isExtended64BitVector(); 653 } 654 655 /// is128BitVector - Return true if this is a 128-bit vector type. 656 bool is128BitVector() const { 657 return isSimple() ? V.is128BitVector() : isExtended128BitVector(); 658 } 659 660 /// is256BitVector - Return true if this is a 256-bit vector type. 661 bool is256BitVector() const { 662 return isSimple() ? V.is256BitVector() : isExtended256BitVector(); 663 } 664 665 /// is512BitVector - Return true if this is a 512-bit vector type. 666 bool is512BitVector() const { 667 return isSimple() ? V.is512BitVector() : isExtended512BitVector(); 668 } 669 670 /// is1024BitVector - Return true if this is a 1024-bit vector type. 671 bool is1024BitVector() const { 672 return isSimple() ? V.is1024BitVector() : isExtended1024BitVector(); 673 } 674 675 /// isOverloaded - Return true if this is an overloaded type for TableGen. 676 bool isOverloaded() const { 677 return (V==MVT::iAny || V==MVT::fAny || V==MVT::vAny || V==MVT::iPTRAny); 678 } 679 680 /// isByteSized - Return true if the bit size is a multiple of 8. 681 bool isByteSized() const { 682 return (getSizeInBits() & 7) == 0; 683 } 684 685 /// isRound - Return true if the size is a power-of-two number of bytes. 686 bool isRound() const { 687 unsigned BitSize = getSizeInBits(); 688 return BitSize >= 8 && !(BitSize & (BitSize - 1)); 689 } 690 691 /// bitsEq - Return true if this has the same number of bits as VT. 692 bool bitsEq(EVT VT) const { 693 if (EVT::operator==(VT)) return true; 694 return getSizeInBits() == VT.getSizeInBits(); 695 } 696 697 /// bitsGT - Return true if this has more bits than VT. 698 bool bitsGT(EVT VT) const { 699 if (EVT::operator==(VT)) return false; 700 return getSizeInBits() > VT.getSizeInBits(); 701 } 702 703 /// bitsGE - Return true if this has no less bits than VT. 704 bool bitsGE(EVT VT) const { 705 if (EVT::operator==(VT)) return true; 706 return getSizeInBits() >= VT.getSizeInBits(); 707 } 708 709 /// bitsLT - Return true if this has less bits than VT. 710 bool bitsLT(EVT VT) const { 711 if (EVT::operator==(VT)) return false; 712 return getSizeInBits() < VT.getSizeInBits(); 713 } 714 715 /// bitsLE - Return true if this has no more bits than VT. 716 bool bitsLE(EVT VT) const { 717 if (EVT::operator==(VT)) return true; 718 return getSizeInBits() <= VT.getSizeInBits(); 719 } 720 721 722 /// getSimpleVT - Return the SimpleValueType held in the specified 723 /// simple EVT. 724 MVT getSimpleVT() const { 725 assert(isSimple() && "Expected a SimpleValueType!"); 726 return V; 727 } 728 729 /// getScalarType - If this is a vector type, return the element type, 730 /// otherwise return this. 731 EVT getScalarType() const { 732 return isVector() ? getVectorElementType() : *this; 733 } 734 735 /// getVectorElementType - Given a vector type, return the type of 736 /// each element. 737 EVT getVectorElementType() const { 738 assert(isVector() && "Invalid vector type!"); 739 if (isSimple()) 740 return V.getVectorElementType(); 741 return getExtendedVectorElementType(); 742 } 743 744 /// getVectorNumElements - Given a vector type, return the number of 745 /// elements it contains. 746 unsigned getVectorNumElements() const { 747 assert(isVector() && "Invalid vector type!"); 748 if (isSimple()) 749 return V.getVectorNumElements(); 750 return getExtendedVectorNumElements(); 751 } 752 753 /// getSizeInBits - Return the size of the specified value type in bits. 754 unsigned getSizeInBits() const { 755 if (isSimple()) 756 return V.getSizeInBits(); 757 return getExtendedSizeInBits(); 758 } 759 760 /// getStoreSize - Return the number of bytes overwritten by a store 761 /// of the specified value type. 762 unsigned getStoreSize() const { 763 return (getSizeInBits() + 7) / 8; 764 } 765 766 /// getStoreSizeInBits - Return the number of bits overwritten by a store 767 /// of the specified value type. 768 unsigned getStoreSizeInBits() const { 769 return getStoreSize() * 8; 770 } 771 772 /// getRoundIntegerType - Rounds the bit-width of the given integer EVT up 773 /// to the nearest power of two (and at least to eight), and returns the 774 /// integer EVT with that number of bits. 775 EVT getRoundIntegerType(LLVMContext &Context) const { 776 assert(isInteger() && !isVector() && "Invalid integer type!"); 777 unsigned BitWidth = getSizeInBits(); 778 if (BitWidth <= 8) 779 return EVT(MVT::i8); 780 return getIntegerVT(Context, 1 << Log2_32_Ceil(BitWidth)); 781 } 782 783 /// getHalfSizedIntegerVT - Finds the smallest simple value type that is 784 /// greater than or equal to half the width of this EVT. If no simple 785 /// value type can be found, an extended integer value type of half the 786 /// size (rounded up) is returned. 787 EVT getHalfSizedIntegerVT(LLVMContext &Context) const { 788 assert(isInteger() && !isVector() && "Invalid integer type!"); 789 unsigned EVTSize = getSizeInBits(); 790 for (unsigned IntVT = MVT::FIRST_INTEGER_VALUETYPE; 791 IntVT <= MVT::LAST_INTEGER_VALUETYPE; ++IntVT) { 792 EVT HalfVT = EVT((MVT::SimpleValueType)IntVT); 793 if (HalfVT.getSizeInBits() * 2 >= EVTSize) 794 return HalfVT; 795 } 796 return getIntegerVT(Context, (EVTSize + 1) / 2); 797 } 798 799 /// isPow2VectorType - Returns true if the given vector is a power of 2. 800 bool isPow2VectorType() const { 801 unsigned NElts = getVectorNumElements(); 802 return !(NElts & (NElts - 1)); 803 } 804 805 /// getPow2VectorType - Widens the length of the given vector EVT up to 806 /// the nearest power of 2 and returns that type. 807 EVT getPow2VectorType(LLVMContext &Context) const { 808 if (!isPow2VectorType()) { 809 unsigned NElts = getVectorNumElements(); 810 unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts); 811 return EVT::getVectorVT(Context, getVectorElementType(), Pow2NElts); 812 } 813 else { 814 return *this; 815 } 816 } 817 818 /// getEVTString - This function returns value type as a string, 819 /// e.g. "i32". 820 std::string getEVTString() const; 821 822 /// getTypeForEVT - This method returns an LLVM type corresponding to the 823 /// specified EVT. For integer types, this returns an unsigned type. Note 824 /// that this will abort for types that cannot be represented. 825 Type *getTypeForEVT(LLVMContext &Context) const; 826 827 /// getEVT - Return the value type corresponding to the specified type. 828 /// This returns all pointers as iPTR. If HandleUnknown is true, unknown 829 /// types are returned as Other, otherwise they are invalid. 830 static EVT getEVT(Type *Ty, bool HandleUnknown = false); 831 832 intptr_t getRawBits() const { 833 if (isSimple()) 834 return V.SimpleTy; 835 else 836 return (intptr_t)(LLVMTy); 837 } 838 839 /// compareRawBits - A meaningless but well-behaved order, useful for 840 /// constructing containers. 841 struct compareRawBits { 842 bool operator()(EVT L, EVT R) const { 843 if (L.V.SimpleTy == R.V.SimpleTy) 844 return L.LLVMTy < R.LLVMTy; 845 else 846 return L.V.SimpleTy < R.V.SimpleTy; 847 } 848 }; 849 850 private: 851 // Methods for handling the Extended-type case in functions above. 852 // These are all out-of-line to prevent users of this header file 853 // from having a dependency on Type.h. 854 EVT changeExtendedVectorElementTypeToInteger() const; 855 static EVT getExtendedIntegerVT(LLVMContext &C, unsigned BitWidth); 856 static EVT getExtendedVectorVT(LLVMContext &C, EVT VT, 857 unsigned NumElements); 858 bool isExtendedFloatingPoint() const; 859 bool isExtendedInteger() const; 860 bool isExtendedVector() const; 861 bool isExtended16BitVector() const; 862 bool isExtended32BitVector() const; 863 bool isExtended64BitVector() const; 864 bool isExtended128BitVector() const; 865 bool isExtended256BitVector() const; 866 bool isExtended512BitVector() const; 867 bool isExtended1024BitVector() const; 868 EVT getExtendedVectorElementType() const; 869 unsigned getExtendedVectorNumElements() const; 870 unsigned getExtendedSizeInBits() const; 871 }; 872 873 } // End llvm namespace 874 875 #endif 876
