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 case iPTR: 347 llvm_unreachable("Value type size is target-dependent. Ask TLI."); 348 case iPTRAny: 349 case iAny: 350 case fAny: 351 case vAny: 352 llvm_unreachable("Value type is overloaded."); 353 case Metadata: 354 llvm_unreachable("Value type is metadata."); 355 default: 356 llvm_unreachable("getSizeInBits called on extended MVT."); 357 case i1 : return 1; 358 case v2i1: return 2; 359 case v4i1: return 4; 360 case i8 : 361 case v8i1: return 8; 362 case i16 : 363 case f16: 364 case v16i1: 365 case v2i8: 366 case v1i16: return 16; 367 case f32 : 368 case i32 : 369 case v32i1: 370 case v4i8: 371 case v2i16: 372 case v2f16: 373 case v1i32: return 32; 374 case x86mmx: 375 case f64 : 376 case i64 : 377 case v64i1: 378 case v8i8: 379 case v4i16: 380 case v2i32: 381 case v1i64: 382 case v2f32: return 64; 383 case f80 : return 80; 384 case f128: 385 case ppcf128: 386 case i128: 387 case v16i8: 388 case v8i16: 389 case v4i32: 390 case v2i64: 391 case v4f32: 392 case v2f64: return 128; 393 case v32i8: 394 case v16i16: 395 case v8i32: 396 case v4i64: 397 case v8f32: 398 case v4f64: return 256; 399 case v64i8: 400 case v32i16: 401 case v16i32: 402 case v8i64: 403 case v16f32: 404 case v8f64: return 512; 405 case v16i64:return 1024; 406 } 407 } 408 409 /// getStoreSize - Return the number of bytes overwritten by a store 410 /// of the specified value type. 411 unsigned getStoreSize() const { 412 return (getSizeInBits() + 7) / 8; 413 } 414 415 /// getStoreSizeInBits - Return the number of bits overwritten by a store 416 /// of the specified value type. 417 unsigned getStoreSizeInBits() const { 418 return getStoreSize() * 8; 419 } 420 421 /// Return true if this has more bits than VT. 422 bool bitsGT(MVT VT) const { 423 return getSizeInBits() > VT.getSizeInBits(); 424 } 425 426 /// Return true if this has no less bits than VT. 427 bool bitsGE(MVT VT) const { 428 return getSizeInBits() >= VT.getSizeInBits(); 429 } 430 431 /// Return true if this has less bits than VT. 432 bool bitsLT(MVT VT) const { 433 return getSizeInBits() < VT.getSizeInBits(); 434 } 435 436 /// Return true if this has no more bits than VT. 437 bool bitsLE(MVT VT) const { 438 return getSizeInBits() <= VT.getSizeInBits(); 439 } 440 441 442 static MVT getFloatingPointVT(unsigned BitWidth) { 443 switch (BitWidth) { 444 default: 445 llvm_unreachable("Bad bit width!"); 446 case 16: 447 return MVT::f16; 448 case 32: 449 return MVT::f32; 450 case 64: 451 return MVT::f64; 452 case 80: 453 return MVT::f80; 454 case 128: 455 return MVT::f128; 456 } 457 } 458 459 static MVT getIntegerVT(unsigned BitWidth) { 460 switch (BitWidth) { 461 default: 462 return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE); 463 case 1: 464 return MVT::i1; 465 case 8: 466 return MVT::i8; 467 case 16: 468 return MVT::i16; 469 case 32: 470 return MVT::i32; 471 case 64: 472 return MVT::i64; 473 case 128: 474 return MVT::i128; 475 } 476 } 477 478 static MVT getVectorVT(MVT VT, unsigned NumElements) { 479 switch (VT.SimpleTy) { 480 default: 481 break; 482 case MVT::i1: 483 if (NumElements == 2) return MVT::v2i1; 484 if (NumElements == 4) return MVT::v4i1; 485 if (NumElements == 8) return MVT::v8i1; 486 if (NumElements == 16) return MVT::v16i1; 487 if (NumElements == 32) return MVT::v32i1; 488 if (NumElements == 64) return MVT::v64i1; 489 break; 490 case MVT::i8: 491 if (NumElements == 2) return MVT::v2i8; 492 if (NumElements == 4) return MVT::v4i8; 493 if (NumElements == 8) return MVT::v8i8; 494 if (NumElements == 16) return MVT::v16i8; 495 if (NumElements == 32) return MVT::v32i8; 496 if (NumElements == 64) return MVT::v64i8; 497 break; 498 case MVT::i16: 499 if (NumElements == 1) return MVT::v1i16; 500 if (NumElements == 2) return MVT::v2i16; 501 if (NumElements == 4) return MVT::v4i16; 502 if (NumElements == 8) return MVT::v8i16; 503 if (NumElements == 16) return MVT::v16i16; 504 if (NumElements == 32) return MVT::v32i16; 505 break; 506 case MVT::i32: 507 if (NumElements == 1) return MVT::v1i32; 508 if (NumElements == 2) return MVT::v2i32; 509 if (NumElements == 4) return MVT::v4i32; 510 if (NumElements == 8) return MVT::v8i32; 511 if (NumElements == 16) return MVT::v16i32; 512 break; 513 case MVT::i64: 514 if (NumElements == 1) return MVT::v1i64; 515 if (NumElements == 2) return MVT::v2i64; 516 if (NumElements == 4) return MVT::v4i64; 517 if (NumElements == 8) return MVT::v8i64; 518 if (NumElements == 16) return MVT::v16i64; 519 break; 520 case MVT::f16: 521 if (NumElements == 2) return MVT::v2f16; 522 break; 523 case MVT::f32: 524 if (NumElements == 2) return MVT::v2f32; 525 if (NumElements == 4) return MVT::v4f32; 526 if (NumElements == 8) return MVT::v8f32; 527 if (NumElements == 16) return MVT::v16f32; 528 break; 529 case MVT::f64: 530 if (NumElements == 2) return MVT::v2f64; 531 if (NumElements == 4) return MVT::v4f64; 532 if (NumElements == 8) return MVT::v8f64; 533 break; 534 } 535 return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE); 536 } 537 538 /// Return the value type corresponding to the specified type. This returns 539 /// all pointers as iPTR. If HandleUnknown is true, unknown types are 540 /// returned as Other, otherwise they are invalid. 541 static MVT getVT(Type *Ty, bool HandleUnknown = false); 542 543 }; 544 545 546 /// EVT - Extended Value Type. Capable of holding value types which are not 547 /// native for any processor (such as the i12345 type), as well as the types 548 /// a MVT can represent. 549 struct EVT { 550 private: 551 MVT V; 552 Type *LLVMTy; 553 554 public: 555 EVT() : V((MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE)), 556 LLVMTy(0) {} 557 EVT(MVT::SimpleValueType SVT) : V(SVT), LLVMTy(0) { } 558 EVT(MVT S) : V(S), LLVMTy(0) {} 559 560 bool operator==(EVT VT) const { 561 return !(*this != VT); 562 } 563 bool operator!=(EVT VT) const { 564 if (V.SimpleTy != VT.V.SimpleTy) 565 return true; 566 if (V.SimpleTy < 0) 567 return LLVMTy != VT.LLVMTy; 568 return false; 569 } 570 571 /// getFloatingPointVT - Returns the EVT that represents a floating point 572 /// type with the given number of bits. There are two floating point types 573 /// with 128 bits - this returns f128 rather than ppcf128. 574 static EVT getFloatingPointVT(unsigned BitWidth) { 575 return MVT::getFloatingPointVT(BitWidth); 576 } 577 578 /// getIntegerVT - Returns the EVT that represents an integer with the given 579 /// number of bits. 580 static EVT getIntegerVT(LLVMContext &Context, unsigned BitWidth) { 581 MVT M = MVT::getIntegerVT(BitWidth); 582 if (M.SimpleTy >= 0) 583 return M; 584 return getExtendedIntegerVT(Context, BitWidth); 585 } 586 587 /// getVectorVT - Returns the EVT that represents a vector NumElements in 588 /// length, where each element is of type VT. 589 static EVT getVectorVT(LLVMContext &Context, EVT VT, unsigned NumElements) { 590 MVT M = MVT::getVectorVT(VT.V, NumElements); 591 if (M.SimpleTy >= 0) 592 return M; 593 return getExtendedVectorVT(Context, VT, NumElements); 594 } 595 596 /// changeVectorElementTypeToInteger - Return a vector with the same number 597 /// of elements as this vector, but with the element type converted to an 598 /// integer type with the same bitwidth. 599 EVT changeVectorElementTypeToInteger() const { 600 if (!isSimple()) 601 return changeExtendedVectorElementTypeToInteger(); 602 MVT EltTy = getSimpleVT().getVectorElementType(); 603 unsigned BitWidth = EltTy.getSizeInBits(); 604 MVT IntTy = MVT::getIntegerVT(BitWidth); 605 MVT VecTy = MVT::getVectorVT(IntTy, getVectorNumElements()); 606 assert(VecTy.SimpleTy >= 0 && 607 "Simple vector VT not representable by simple integer vector VT!"); 608 return VecTy; 609 } 610 611 /// isSimple - Test if the given EVT is simple (as opposed to being 612 /// extended). 613 bool isSimple() const { 614 return V.SimpleTy >= 0; 615 } 616 617 /// isExtended - Test if the given EVT is extended (as opposed to 618 /// being simple). 619 bool isExtended() const { 620 return !isSimple(); 621 } 622 623 /// isFloatingPoint - Return true if this is a FP, or a vector FP type. 624 bool isFloatingPoint() const { 625 return isSimple() ? V.isFloatingPoint() : isExtendedFloatingPoint(); 626 } 627 628 /// isInteger - Return true if this is an integer, or a vector integer type. 629 bool isInteger() const { 630 return isSimple() ? V.isInteger() : isExtendedInteger(); 631 } 632 633 /// isVector - Return true if this is a vector value type. 634 bool isVector() const { 635 return isSimple() ? V.isVector() : isExtendedVector(); 636 } 637 638 /// is16BitVector - Return true if this is a 16-bit vector type. 639 bool is16BitVector() const { 640 return isSimple() ? V.is16BitVector() : isExtended16BitVector(); 641 } 642 643 /// is32BitVector - Return true if this is a 32-bit vector type. 644 bool is32BitVector() const { 645 return isSimple() ? V.is32BitVector() : isExtended32BitVector(); 646 } 647 648 /// is64BitVector - Return true if this is a 64-bit vector type. 649 bool is64BitVector() const { 650 return isSimple() ? V.is64BitVector() : isExtended64BitVector(); 651 } 652 653 /// is128BitVector - Return true if this is a 128-bit vector type. 654 bool is128BitVector() const { 655 return isSimple() ? V.is128BitVector() : isExtended128BitVector(); 656 } 657 658 /// is256BitVector - Return true if this is a 256-bit vector type. 659 bool is256BitVector() const { 660 return isSimple() ? V.is256BitVector() : isExtended256BitVector(); 661 } 662 663 /// is512BitVector - Return true if this is a 512-bit vector type. 664 bool is512BitVector() const { 665 return isSimple() ? V.is512BitVector() : isExtended512BitVector(); 666 } 667 668 /// is1024BitVector - Return true if this is a 1024-bit vector type. 669 bool is1024BitVector() const { 670 return isSimple() ? V.is1024BitVector() : isExtended1024BitVector(); 671 } 672 673 /// isOverloaded - Return true if this is an overloaded type for TableGen. 674 bool isOverloaded() const { 675 return (V==MVT::iAny || V==MVT::fAny || V==MVT::vAny || V==MVT::iPTRAny); 676 } 677 678 /// isByteSized - Return true if the bit size is a multiple of 8. 679 bool isByteSized() const { 680 return (getSizeInBits() & 7) == 0; 681 } 682 683 /// isRound - Return true if the size is a power-of-two number of bytes. 684 bool isRound() const { 685 unsigned BitSize = getSizeInBits(); 686 return BitSize >= 8 && !(BitSize & (BitSize - 1)); 687 } 688 689 /// bitsEq - Return true if this has the same number of bits as VT. 690 bool bitsEq(EVT VT) const { 691 if (EVT::operator==(VT)) return true; 692 return getSizeInBits() == VT.getSizeInBits(); 693 } 694 695 /// bitsGT - Return true if this has more bits than VT. 696 bool bitsGT(EVT VT) const { 697 if (EVT::operator==(VT)) return false; 698 return getSizeInBits() > VT.getSizeInBits(); 699 } 700 701 /// bitsGE - Return true if this has no less bits than VT. 702 bool bitsGE(EVT VT) const { 703 if (EVT::operator==(VT)) return true; 704 return getSizeInBits() >= VT.getSizeInBits(); 705 } 706 707 /// bitsLT - Return true if this has less bits than VT. 708 bool bitsLT(EVT VT) const { 709 if (EVT::operator==(VT)) return false; 710 return getSizeInBits() < VT.getSizeInBits(); 711 } 712 713 /// bitsLE - Return true if this has no more bits than VT. 714 bool bitsLE(EVT VT) const { 715 if (EVT::operator==(VT)) return true; 716 return getSizeInBits() <= VT.getSizeInBits(); 717 } 718 719 720 /// getSimpleVT - Return the SimpleValueType held in the specified 721 /// simple EVT. 722 MVT getSimpleVT() const { 723 assert(isSimple() && "Expected a SimpleValueType!"); 724 return V; 725 } 726 727 /// getScalarType - If this is a vector type, return the element type, 728 /// otherwise return this. 729 EVT getScalarType() const { 730 return isVector() ? getVectorElementType() : *this; 731 } 732 733 /// getVectorElementType - Given a vector type, return the type of 734 /// each element. 735 EVT getVectorElementType() const { 736 assert(isVector() && "Invalid vector type!"); 737 if (isSimple()) 738 return V.getVectorElementType(); 739 return getExtendedVectorElementType(); 740 } 741 742 /// getVectorNumElements - Given a vector type, return the number of 743 /// elements it contains. 744 unsigned getVectorNumElements() const { 745 assert(isVector() && "Invalid vector type!"); 746 if (isSimple()) 747 return V.getVectorNumElements(); 748 return getExtendedVectorNumElements(); 749 } 750 751 /// getSizeInBits - Return the size of the specified value type in bits. 752 unsigned getSizeInBits() const { 753 if (isSimple()) 754 return V.getSizeInBits(); 755 return getExtendedSizeInBits(); 756 } 757 758 /// getStoreSize - Return the number of bytes overwritten by a store 759 /// of the specified value type. 760 unsigned getStoreSize() const { 761 return (getSizeInBits() + 7) / 8; 762 } 763 764 /// getStoreSizeInBits - Return the number of bits overwritten by a store 765 /// of the specified value type. 766 unsigned getStoreSizeInBits() const { 767 return getStoreSize() * 8; 768 } 769 770 /// getRoundIntegerType - Rounds the bit-width of the given integer EVT up 771 /// to the nearest power of two (and at least to eight), and returns the 772 /// integer EVT with that number of bits. 773 EVT getRoundIntegerType(LLVMContext &Context) const { 774 assert(isInteger() && !isVector() && "Invalid integer type!"); 775 unsigned BitWidth = getSizeInBits(); 776 if (BitWidth <= 8) 777 return EVT(MVT::i8); 778 return getIntegerVT(Context, 1 << Log2_32_Ceil(BitWidth)); 779 } 780 781 /// getHalfSizedIntegerVT - Finds the smallest simple value type that is 782 /// greater than or equal to half the width of this EVT. If no simple 783 /// value type can be found, an extended integer value type of half the 784 /// size (rounded up) is returned. 785 EVT getHalfSizedIntegerVT(LLVMContext &Context) const { 786 assert(isInteger() && !isVector() && "Invalid integer type!"); 787 unsigned EVTSize = getSizeInBits(); 788 for (unsigned IntVT = MVT::FIRST_INTEGER_VALUETYPE; 789 IntVT <= MVT::LAST_INTEGER_VALUETYPE; ++IntVT) { 790 EVT HalfVT = EVT((MVT::SimpleValueType)IntVT); 791 if (HalfVT.getSizeInBits() * 2 >= EVTSize) 792 return HalfVT; 793 } 794 return getIntegerVT(Context, (EVTSize + 1) / 2); 795 } 796 797 /// isPow2VectorType - Returns true if the given vector is a power of 2. 798 bool isPow2VectorType() const { 799 unsigned NElts = getVectorNumElements(); 800 return !(NElts & (NElts - 1)); 801 } 802 803 /// getPow2VectorType - Widens the length of the given vector EVT up to 804 /// the nearest power of 2 and returns that type. 805 EVT getPow2VectorType(LLVMContext &Context) const { 806 if (!isPow2VectorType()) { 807 unsigned NElts = getVectorNumElements(); 808 unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts); 809 return EVT::getVectorVT(Context, getVectorElementType(), Pow2NElts); 810 } 811 else { 812 return *this; 813 } 814 } 815 816 /// getEVTString - This function returns value type as a string, 817 /// e.g. "i32". 818 std::string getEVTString() const; 819 820 /// getTypeForEVT - This method returns an LLVM type corresponding to the 821 /// specified EVT. For integer types, this returns an unsigned type. Note 822 /// that this will abort for types that cannot be represented. 823 Type *getTypeForEVT(LLVMContext &Context) const; 824 825 /// getEVT - Return the value type corresponding to the specified type. 826 /// This returns all pointers as iPTR. If HandleUnknown is true, unknown 827 /// types are returned as Other, otherwise they are invalid. 828 static EVT getEVT(Type *Ty, bool HandleUnknown = false); 829 830 intptr_t getRawBits() const { 831 if (isSimple()) 832 return V.SimpleTy; 833 else 834 return (intptr_t)(LLVMTy); 835 } 836 837 /// compareRawBits - A meaningless but well-behaved order, useful for 838 /// constructing containers. 839 struct compareRawBits { 840 bool operator()(EVT L, EVT R) const { 841 if (L.V.SimpleTy == R.V.SimpleTy) 842 return L.LLVMTy < R.LLVMTy; 843 else 844 return L.V.SimpleTy < R.V.SimpleTy; 845 } 846 }; 847 848 private: 849 // Methods for handling the Extended-type case in functions above. 850 // These are all out-of-line to prevent users of this header file 851 // from having a dependency on Type.h. 852 EVT changeExtendedVectorElementTypeToInteger() const; 853 static EVT getExtendedIntegerVT(LLVMContext &C, unsigned BitWidth); 854 static EVT getExtendedVectorVT(LLVMContext &C, EVT VT, 855 unsigned NumElements); 856 bool isExtendedFloatingPoint() const; 857 bool isExtendedInteger() const; 858 bool isExtendedVector() const; 859 bool isExtended16BitVector() const; 860 bool isExtended32BitVector() const; 861 bool isExtended64BitVector() const; 862 bool isExtended128BitVector() const; 863 bool isExtended256BitVector() const; 864 bool isExtended512BitVector() const; 865 bool isExtended1024BitVector() const; 866 EVT getExtendedVectorElementType() const; 867 unsigned getExtendedVectorNumElements() const; 868 unsigned getExtendedSizeInBits() const; 869 }; 870 871 } // End llvm namespace 872 873 #endif 874
