1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===// 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 #include "llvm/ADT/APInt.h" 11 #include "llvm/ADT/ArrayRef.h" 12 #include "llvm/ADT/SmallString.h" 13 #include "gtest/gtest.h" 14 #include <array> 15 16 using namespace llvm; 17 18 namespace { 19 20 TEST(APIntTest, ValueInit) { 21 APInt Zero = APInt(); 22 EXPECT_TRUE(!Zero); 23 EXPECT_TRUE(!Zero.zext(64)); 24 EXPECT_TRUE(!Zero.sext(64)); 25 } 26 27 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 28 TEST(APIntTest, ShiftLeftByZero) { 29 APInt One = APInt::getNullValue(65) + 1; 30 APInt Shl = One.shl(0); 31 EXPECT_TRUE(Shl[0]); 32 EXPECT_FALSE(Shl[1]); 33 } 34 35 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 36 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 37 EXPECT_EQ(neg_one, neg_one.ashr(7)); 38 } 39 40 TEST(APIntTest, i128_NegativeCount) { 41 APInt Minus3(128, static_cast<uint64_t>(-3), true); 42 EXPECT_EQ(126u, Minus3.countLeadingOnes()); 43 EXPECT_EQ(-3, Minus3.getSExtValue()); 44 45 APInt Minus1(128, static_cast<uint64_t>(-1), true); 46 EXPECT_EQ(0u, Minus1.countLeadingZeros()); 47 EXPECT_EQ(128u, Minus1.countLeadingOnes()); 48 EXPECT_EQ(128u, Minus1.getActiveBits()); 49 EXPECT_EQ(0u, Minus1.countTrailingZeros()); 50 EXPECT_EQ(128u, Minus1.countTrailingOnes()); 51 EXPECT_EQ(128u, Minus1.countPopulation()); 52 EXPECT_EQ(-1, Minus1.getSExtValue()); 53 } 54 55 TEST(APIntTest, i33_Count) { 56 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 57 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 58 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 59 EXPECT_EQ(33u, i33minus2.getActiveBits()); 60 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 61 EXPECT_EQ(32u, i33minus2.countPopulation()); 62 EXPECT_EQ(-2, i33minus2.getSExtValue()); 63 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 64 } 65 66 TEST(APIntTest, i65_Count) { 67 APInt i65(65, 0, true); 68 EXPECT_EQ(65u, i65.countLeadingZeros()); 69 EXPECT_EQ(0u, i65.countLeadingOnes()); 70 EXPECT_EQ(0u, i65.getActiveBits()); 71 EXPECT_EQ(1u, i65.getActiveWords()); 72 EXPECT_EQ(65u, i65.countTrailingZeros()); 73 EXPECT_EQ(0u, i65.countPopulation()); 74 75 APInt i65minus(65, 0, true); 76 i65minus.setBit(64); 77 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 78 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 79 EXPECT_EQ(65u, i65minus.getActiveBits()); 80 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 81 EXPECT_EQ(1u, i65minus.countPopulation()); 82 } 83 84 TEST(APIntTest, i128_PositiveCount) { 85 APInt u128max = APInt::getAllOnesValue(128); 86 EXPECT_EQ(128u, u128max.countLeadingOnes()); 87 EXPECT_EQ(0u, u128max.countLeadingZeros()); 88 EXPECT_EQ(128u, u128max.getActiveBits()); 89 EXPECT_EQ(0u, u128max.countTrailingZeros()); 90 EXPECT_EQ(128u, u128max.countTrailingOnes()); 91 EXPECT_EQ(128u, u128max.countPopulation()); 92 93 APInt u64max(128, static_cast<uint64_t>(-1), false); 94 EXPECT_EQ(64u, u64max.countLeadingZeros()); 95 EXPECT_EQ(0u, u64max.countLeadingOnes()); 96 EXPECT_EQ(64u, u64max.getActiveBits()); 97 EXPECT_EQ(0u, u64max.countTrailingZeros()); 98 EXPECT_EQ(64u, u64max.countTrailingOnes()); 99 EXPECT_EQ(64u, u64max.countPopulation()); 100 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 101 102 APInt zero(128, 0, true); 103 EXPECT_EQ(128u, zero.countLeadingZeros()); 104 EXPECT_EQ(0u, zero.countLeadingOnes()); 105 EXPECT_EQ(0u, zero.getActiveBits()); 106 EXPECT_EQ(128u, zero.countTrailingZeros()); 107 EXPECT_EQ(0u, zero.countTrailingOnes()); 108 EXPECT_EQ(0u, zero.countPopulation()); 109 EXPECT_EQ(0u, zero.getSExtValue()); 110 EXPECT_EQ(0u, zero.getZExtValue()); 111 112 APInt one(128, 1, true); 113 EXPECT_EQ(127u, one.countLeadingZeros()); 114 EXPECT_EQ(0u, one.countLeadingOnes()); 115 EXPECT_EQ(1u, one.getActiveBits()); 116 EXPECT_EQ(0u, one.countTrailingZeros()); 117 EXPECT_EQ(1u, one.countTrailingOnes()); 118 EXPECT_EQ(1u, one.countPopulation()); 119 EXPECT_EQ(1, one.getSExtValue()); 120 EXPECT_EQ(1u, one.getZExtValue()); 121 } 122 123 TEST(APIntTest, i1) { 124 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 125 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 126 const APInt zero(1, 0); 127 const APInt one(1, 1); 128 const APInt two(1, 2); 129 130 EXPECT_EQ(0, neg_two.getSExtValue()); 131 EXPECT_EQ(-1, neg_one.getSExtValue()); 132 EXPECT_EQ(1u, neg_one.getZExtValue()); 133 EXPECT_EQ(0u, zero.getZExtValue()); 134 EXPECT_EQ(-1, one.getSExtValue()); 135 EXPECT_EQ(1u, one.getZExtValue()); 136 EXPECT_EQ(0u, two.getZExtValue()); 137 EXPECT_EQ(0, two.getSExtValue()); 138 139 // Basic equalities for 1-bit values. 140 EXPECT_EQ(zero, two); 141 EXPECT_EQ(zero, neg_two); 142 EXPECT_EQ(one, neg_one); 143 EXPECT_EQ(two, neg_two); 144 145 // Min/max signed values. 146 EXPECT_TRUE(zero.isMaxSignedValue()); 147 EXPECT_FALSE(one.isMaxSignedValue()); 148 EXPECT_FALSE(zero.isMinSignedValue()); 149 EXPECT_TRUE(one.isMinSignedValue()); 150 151 // Additions. 152 EXPECT_EQ(two, one + one); 153 EXPECT_EQ(zero, neg_one + one); 154 EXPECT_EQ(neg_two, neg_one + neg_one); 155 156 // Subtractions. 157 EXPECT_EQ(neg_two, neg_one - one); 158 EXPECT_EQ(two, one - neg_one); 159 EXPECT_EQ(zero, one - one); 160 161 // And 162 EXPECT_EQ(zero, zero & zero); 163 EXPECT_EQ(zero, one & zero); 164 EXPECT_EQ(zero, zero & one); 165 EXPECT_EQ(one, one & one); 166 EXPECT_EQ(zero, zero & zero); 167 EXPECT_EQ(zero, neg_one & zero); 168 EXPECT_EQ(zero, zero & neg_one); 169 EXPECT_EQ(neg_one, neg_one & neg_one); 170 171 // Or 172 EXPECT_EQ(zero, zero | zero); 173 EXPECT_EQ(one, one | zero); 174 EXPECT_EQ(one, zero | one); 175 EXPECT_EQ(one, one | one); 176 EXPECT_EQ(zero, zero | zero); 177 EXPECT_EQ(neg_one, neg_one | zero); 178 EXPECT_EQ(neg_one, zero | neg_one); 179 EXPECT_EQ(neg_one, neg_one | neg_one); 180 181 // Xor 182 EXPECT_EQ(zero, zero ^ zero); 183 EXPECT_EQ(one, one ^ zero); 184 EXPECT_EQ(one, zero ^ one); 185 EXPECT_EQ(zero, one ^ one); 186 EXPECT_EQ(zero, zero ^ zero); 187 EXPECT_EQ(neg_one, neg_one ^ zero); 188 EXPECT_EQ(neg_one, zero ^ neg_one); 189 EXPECT_EQ(zero, neg_one ^ neg_one); 190 191 // Shifts. 192 EXPECT_EQ(zero, one << one); 193 EXPECT_EQ(one, one << zero); 194 EXPECT_EQ(zero, one.shl(1)); 195 EXPECT_EQ(one, one.shl(0)); 196 EXPECT_EQ(zero, one.lshr(1)); 197 EXPECT_EQ(zero, one.ashr(1)); 198 199 // Rotates. 200 EXPECT_EQ(one, one.rotl(0)); 201 EXPECT_EQ(one, one.rotl(1)); 202 EXPECT_EQ(one, one.rotr(0)); 203 EXPECT_EQ(one, one.rotr(1)); 204 205 // Multiplies. 206 EXPECT_EQ(neg_one, neg_one * one); 207 EXPECT_EQ(neg_one, one * neg_one); 208 EXPECT_EQ(one, neg_one * neg_one); 209 EXPECT_EQ(one, one * one); 210 211 // Divides. 212 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 213 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 214 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 215 EXPECT_EQ(one, one.sdiv(one)); 216 217 EXPECT_EQ(neg_one, one.udiv(neg_one)); 218 EXPECT_EQ(neg_one, neg_one.udiv(one)); 219 EXPECT_EQ(one, neg_one.udiv(neg_one)); 220 EXPECT_EQ(one, one.udiv(one)); 221 222 // Remainders. 223 EXPECT_EQ(zero, neg_one.srem(one)); 224 EXPECT_EQ(zero, neg_one.urem(one)); 225 EXPECT_EQ(zero, one.srem(neg_one)); 226 227 // sdivrem 228 { 229 APInt q(8, 0); 230 APInt r(8, 0); 231 APInt one(8, 1); 232 APInt two(8, 2); 233 APInt nine(8, 9); 234 APInt four(8, 4); 235 236 EXPECT_EQ(nine.srem(two), one); 237 EXPECT_EQ(nine.srem(-two), one); 238 EXPECT_EQ((-nine).srem(two), -one); 239 EXPECT_EQ((-nine).srem(-two), -one); 240 241 APInt::sdivrem(nine, two, q, r); 242 EXPECT_EQ(four, q); 243 EXPECT_EQ(one, r); 244 APInt::sdivrem(-nine, two, q, r); 245 EXPECT_EQ(-four, q); 246 EXPECT_EQ(-one, r); 247 APInt::sdivrem(nine, -two, q, r); 248 EXPECT_EQ(-four, q); 249 EXPECT_EQ(one, r); 250 APInt::sdivrem(-nine, -two, q, r); 251 EXPECT_EQ(four, q); 252 EXPECT_EQ(-one, r); 253 } 254 } 255 256 TEST(APIntTest, compare) { 257 std::array<APInt, 5> testVals{{ 258 APInt{16, 2}, 259 APInt{16, 1}, 260 APInt{16, 0}, 261 APInt{16, (uint64_t)-1, true}, 262 APInt{16, (uint64_t)-2, true}, 263 }}; 264 265 for (auto &arg1 : testVals) 266 for (auto &arg2 : testVals) { 267 auto uv1 = arg1.getZExtValue(); 268 auto uv2 = arg2.getZExtValue(); 269 auto sv1 = arg1.getSExtValue(); 270 auto sv2 = arg2.getSExtValue(); 271 272 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 273 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 274 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 275 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 276 277 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 278 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 279 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 280 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 281 282 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 283 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 284 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 285 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 286 287 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 288 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 289 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 290 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 291 } 292 } 293 294 TEST(APIntTest, compareWithRawIntegers) { 295 EXPECT_TRUE(!APInt(8, 1).uge(256)); 296 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 297 EXPECT_TRUE( APInt(8, 1).ule(256)); 298 EXPECT_TRUE( APInt(8, 1).ult(256)); 299 EXPECT_TRUE(!APInt(8, 1).sge(256)); 300 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 301 EXPECT_TRUE( APInt(8, 1).sle(256)); 302 EXPECT_TRUE( APInt(8, 1).slt(256)); 303 EXPECT_TRUE(!(APInt(8, 0) == 256)); 304 EXPECT_TRUE( APInt(8, 0) != 256); 305 EXPECT_TRUE(!(APInt(8, 1) == 256)); 306 EXPECT_TRUE( APInt(8, 1) != 256); 307 308 auto uint64max = UINT64_MAX; 309 auto int64max = INT64_MAX; 310 auto int64min = INT64_MIN; 311 312 auto u64 = APInt{128, uint64max}; 313 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 314 auto big = u64 + 1; 315 316 EXPECT_TRUE( u64.uge(uint64max)); 317 EXPECT_TRUE(!u64.ugt(uint64max)); 318 EXPECT_TRUE( u64.ule(uint64max)); 319 EXPECT_TRUE(!u64.ult(uint64max)); 320 EXPECT_TRUE( u64.sge(int64max)); 321 EXPECT_TRUE( u64.sgt(int64max)); 322 EXPECT_TRUE(!u64.sle(int64max)); 323 EXPECT_TRUE(!u64.slt(int64max)); 324 EXPECT_TRUE( u64.sge(int64min)); 325 EXPECT_TRUE( u64.sgt(int64min)); 326 EXPECT_TRUE(!u64.sle(int64min)); 327 EXPECT_TRUE(!u64.slt(int64min)); 328 329 EXPECT_TRUE(u64 == uint64max); 330 EXPECT_TRUE(u64 != int64max); 331 EXPECT_TRUE(u64 != int64min); 332 333 EXPECT_TRUE(!s64.uge(uint64max)); 334 EXPECT_TRUE(!s64.ugt(uint64max)); 335 EXPECT_TRUE( s64.ule(uint64max)); 336 EXPECT_TRUE( s64.ult(uint64max)); 337 EXPECT_TRUE( s64.sge(int64max)); 338 EXPECT_TRUE(!s64.sgt(int64max)); 339 EXPECT_TRUE( s64.sle(int64max)); 340 EXPECT_TRUE(!s64.slt(int64max)); 341 EXPECT_TRUE( s64.sge(int64min)); 342 EXPECT_TRUE( s64.sgt(int64min)); 343 EXPECT_TRUE(!s64.sle(int64min)); 344 EXPECT_TRUE(!s64.slt(int64min)); 345 346 EXPECT_TRUE(s64 != uint64max); 347 EXPECT_TRUE(s64 == int64max); 348 EXPECT_TRUE(s64 != int64min); 349 350 EXPECT_TRUE( big.uge(uint64max)); 351 EXPECT_TRUE( big.ugt(uint64max)); 352 EXPECT_TRUE(!big.ule(uint64max)); 353 EXPECT_TRUE(!big.ult(uint64max)); 354 EXPECT_TRUE( big.sge(int64max)); 355 EXPECT_TRUE( big.sgt(int64max)); 356 EXPECT_TRUE(!big.sle(int64max)); 357 EXPECT_TRUE(!big.slt(int64max)); 358 EXPECT_TRUE( big.sge(int64min)); 359 EXPECT_TRUE( big.sgt(int64min)); 360 EXPECT_TRUE(!big.sle(int64min)); 361 EXPECT_TRUE(!big.slt(int64min)); 362 363 EXPECT_TRUE(big != uint64max); 364 EXPECT_TRUE(big != int64max); 365 EXPECT_TRUE(big != int64min); 366 } 367 368 TEST(APIntTest, compareWithInt64Min) { 369 int64_t edge = INT64_MIN; 370 int64_t edgeP1 = edge + 1; 371 int64_t edgeM1 = INT64_MAX; 372 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 373 374 EXPECT_TRUE(!a.slt(edge)); 375 EXPECT_TRUE( a.sle(edge)); 376 EXPECT_TRUE(!a.sgt(edge)); 377 EXPECT_TRUE( a.sge(edge)); 378 EXPECT_TRUE( a.slt(edgeP1)); 379 EXPECT_TRUE( a.sle(edgeP1)); 380 EXPECT_TRUE(!a.sgt(edgeP1)); 381 EXPECT_TRUE(!a.sge(edgeP1)); 382 EXPECT_TRUE( a.slt(edgeM1)); 383 EXPECT_TRUE( a.sle(edgeM1)); 384 EXPECT_TRUE(!a.sgt(edgeM1)); 385 EXPECT_TRUE(!a.sge(edgeM1)); 386 } 387 388 TEST(APIntTest, compareWithHalfInt64Max) { 389 uint64_t edge = 0x4000000000000000; 390 uint64_t edgeP1 = edge + 1; 391 uint64_t edgeM1 = edge - 1; 392 auto a = APInt{64, edge}; 393 394 EXPECT_TRUE(!a.ult(edge)); 395 EXPECT_TRUE( a.ule(edge)); 396 EXPECT_TRUE(!a.ugt(edge)); 397 EXPECT_TRUE( a.uge(edge)); 398 EXPECT_TRUE( a.ult(edgeP1)); 399 EXPECT_TRUE( a.ule(edgeP1)); 400 EXPECT_TRUE(!a.ugt(edgeP1)); 401 EXPECT_TRUE(!a.uge(edgeP1)); 402 EXPECT_TRUE(!a.ult(edgeM1)); 403 EXPECT_TRUE(!a.ule(edgeM1)); 404 EXPECT_TRUE( a.ugt(edgeM1)); 405 EXPECT_TRUE( a.uge(edgeM1)); 406 407 EXPECT_TRUE(!a.slt(edge)); 408 EXPECT_TRUE( a.sle(edge)); 409 EXPECT_TRUE(!a.sgt(edge)); 410 EXPECT_TRUE( a.sge(edge)); 411 EXPECT_TRUE( a.slt(edgeP1)); 412 EXPECT_TRUE( a.sle(edgeP1)); 413 EXPECT_TRUE(!a.sgt(edgeP1)); 414 EXPECT_TRUE(!a.sge(edgeP1)); 415 EXPECT_TRUE(!a.slt(edgeM1)); 416 EXPECT_TRUE(!a.sle(edgeM1)); 417 EXPECT_TRUE( a.sgt(edgeM1)); 418 EXPECT_TRUE( a.sge(edgeM1)); 419 } 420 421 TEST(APIntTest, compareLargeIntegers) { 422 // Make sure all the combinations of signed comparisons work with big ints. 423 auto One = APInt{128, static_cast<uint64_t>(1), true}; 424 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 425 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 426 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 427 428 EXPECT_TRUE(!One.slt(One)); 429 EXPECT_TRUE(!Two.slt(One)); 430 EXPECT_TRUE(MinusOne.slt(One)); 431 EXPECT_TRUE(MinusTwo.slt(One)); 432 433 EXPECT_TRUE(One.slt(Two)); 434 EXPECT_TRUE(!Two.slt(Two)); 435 EXPECT_TRUE(MinusOne.slt(Two)); 436 EXPECT_TRUE(MinusTwo.slt(Two)); 437 438 EXPECT_TRUE(!One.slt(MinusOne)); 439 EXPECT_TRUE(!Two.slt(MinusOne)); 440 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 441 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 442 443 EXPECT_TRUE(!One.slt(MinusTwo)); 444 EXPECT_TRUE(!Two.slt(MinusTwo)); 445 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 446 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 447 } 448 449 TEST(APIntTest, binaryOpsWithRawIntegers) { 450 // Single word check. 451 uint64_t E1 = 0x2CA7F46BF6569915ULL; 452 APInt A1(64, E1); 453 454 EXPECT_EQ(A1 & E1, E1); 455 EXPECT_EQ(A1 & 0, 0); 456 EXPECT_EQ(A1 & 1, 1); 457 EXPECT_EQ(A1 & 5, 5); 458 EXPECT_EQ(A1 & UINT64_MAX, E1); 459 460 EXPECT_EQ(A1 | E1, E1); 461 EXPECT_EQ(A1 | 0, E1); 462 EXPECT_EQ(A1 | 1, E1); 463 EXPECT_EQ(A1 | 2, E1 | 2); 464 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 465 466 EXPECT_EQ(A1 ^ E1, 0); 467 EXPECT_EQ(A1 ^ 0, E1); 468 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 469 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 470 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 471 472 // Multiword check. 473 uint64_t N = 0xEB6EB136591CBA21ULL; 474 integerPart E2[4] = { 475 N, 476 0x7B9358BD6A33F10AULL, 477 0x7E7FFA5EADD8846ULL, 478 0x305F341CA00B613DULL 479 }; 480 APInt A2(integerPartWidth*4, E2); 481 482 EXPECT_EQ(A2 & N, N); 483 EXPECT_EQ(A2 & 0, 0); 484 EXPECT_EQ(A2 & 1, 1); 485 EXPECT_EQ(A2 & 5, 1); 486 EXPECT_EQ(A2 & UINT64_MAX, N); 487 488 EXPECT_EQ(A2 | N, A2); 489 EXPECT_EQ(A2 | 0, A2); 490 EXPECT_EQ(A2 | 1, A2); 491 EXPECT_EQ(A2 | 2, A2 + 2); 492 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 493 494 EXPECT_EQ(A2 ^ N, A2 - N); 495 EXPECT_EQ(A2 ^ 0, A2); 496 EXPECT_EQ(A2 ^ 1, A2 - 1); 497 EXPECT_EQ(A2 ^ 7, A2 + 5); 498 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 499 } 500 501 TEST(APIntTest, rvalue_arithmetic) { 502 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 503 504 // Lamdba to return an APInt by value, but also provide the raw value of the 505 // allocated data. 506 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 507 APInt V(129, HexString, 16); 508 RawData = V.getRawData(); 509 return V; 510 }; 511 512 APInt One(129, "1", 16); 513 APInt Two(129, "2", 16); 514 APInt Three(129, "3", 16); 515 APInt MinusOne = -One; 516 517 const uint64_t *RawDataL = nullptr; 518 const uint64_t *RawDataR = nullptr; 519 520 { 521 // 1 + 1 = 2 522 APInt AddLL = One + One; 523 EXPECT_EQ(AddLL, Two); 524 525 APInt AddLR = One + getRValue("1", RawDataR); 526 EXPECT_EQ(AddLR, Two); 527 EXPECT_EQ(AddLR.getRawData(), RawDataR); 528 529 APInt AddRL = getRValue("1", RawDataL) + One; 530 EXPECT_EQ(AddRL, Two); 531 EXPECT_EQ(AddRL.getRawData(), RawDataL); 532 533 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 534 EXPECT_EQ(AddRR, Two); 535 EXPECT_EQ(AddRR.getRawData(), RawDataR); 536 537 // LValue's and constants 538 APInt AddLK = One + 1; 539 EXPECT_EQ(AddLK, Two); 540 541 APInt AddKL = 1 + One; 542 EXPECT_EQ(AddKL, Two); 543 544 // RValue's and constants 545 APInt AddRK = getRValue("1", RawDataL) + 1; 546 EXPECT_EQ(AddRK, Two); 547 EXPECT_EQ(AddRK.getRawData(), RawDataL); 548 549 APInt AddKR = 1 + getRValue("1", RawDataR); 550 EXPECT_EQ(AddKR, Two); 551 EXPECT_EQ(AddKR.getRawData(), RawDataR); 552 } 553 554 { 555 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 556 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 557 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 558 559 APInt AddLL = AllOnes + Two; 560 EXPECT_EQ(AddLL, HighOneLowOne); 561 562 APInt AddLR = AllOnes + getRValue("2", RawDataR); 563 EXPECT_EQ(AddLR, HighOneLowOne); 564 EXPECT_EQ(AddLR.getRawData(), RawDataR); 565 566 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 567 EXPECT_EQ(AddRL, HighOneLowOne); 568 EXPECT_EQ(AddRL.getRawData(), RawDataL); 569 570 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 571 getRValue("2", RawDataR); 572 EXPECT_EQ(AddRR, HighOneLowOne); 573 EXPECT_EQ(AddRR.getRawData(), RawDataR); 574 575 // LValue's and constants 576 APInt AddLK = AllOnes + 2; 577 EXPECT_EQ(AddLK, HighOneLowOne); 578 579 APInt AddKL = 2 + AllOnes; 580 EXPECT_EQ(AddKL, HighOneLowOne); 581 582 // RValue's and constants 583 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 584 EXPECT_EQ(AddRK, HighOneLowOne); 585 EXPECT_EQ(AddRK.getRawData(), RawDataL); 586 587 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 588 EXPECT_EQ(AddKR, HighOneLowOne); 589 EXPECT_EQ(AddKR.getRawData(), RawDataR); 590 } 591 592 { 593 // 2 - 1 = 1 594 APInt SubLL = Two - One; 595 EXPECT_EQ(SubLL, One); 596 597 APInt SubLR = Two - getRValue("1", RawDataR); 598 EXPECT_EQ(SubLR, One); 599 EXPECT_EQ(SubLR.getRawData(), RawDataR); 600 601 APInt SubRL = getRValue("2", RawDataL) - One; 602 EXPECT_EQ(SubRL, One); 603 EXPECT_EQ(SubRL.getRawData(), RawDataL); 604 605 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 606 EXPECT_EQ(SubRR, One); 607 EXPECT_EQ(SubRR.getRawData(), RawDataR); 608 609 // LValue's and constants 610 APInt SubLK = Two - 1; 611 EXPECT_EQ(SubLK, One); 612 613 APInt SubKL = 2 - One; 614 EXPECT_EQ(SubKL, One); 615 616 // RValue's and constants 617 APInt SubRK = getRValue("2", RawDataL) - 1; 618 EXPECT_EQ(SubRK, One); 619 EXPECT_EQ(SubRK.getRawData(), RawDataL); 620 621 APInt SubKR = 2 - getRValue("1", RawDataR); 622 EXPECT_EQ(SubKR, One); 623 EXPECT_EQ(SubKR.getRawData(), RawDataR); 624 } 625 626 { 627 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 628 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 629 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 630 631 APInt SubLL = HighOneLowOne - AllOnes; 632 EXPECT_EQ(SubLL, Two); 633 634 APInt SubLR = HighOneLowOne - 635 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 636 EXPECT_EQ(SubLR, Two); 637 EXPECT_EQ(SubLR.getRawData(), RawDataR); 638 639 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 640 AllOnes; 641 EXPECT_EQ(SubRL, Two); 642 EXPECT_EQ(SubRL.getRawData(), RawDataL); 643 644 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 645 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 646 EXPECT_EQ(SubRR, Two); 647 EXPECT_EQ(SubRR.getRawData(), RawDataR); 648 649 // LValue's and constants 650 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 651 APInt SubLK = HighOneLowOne - 2; 652 EXPECT_EQ(SubLK, AllOnes); 653 654 // 2 - (-1) = 3 655 APInt SubKL = 2 - MinusOne; 656 EXPECT_EQ(SubKL, Three); 657 658 // RValue's and constants 659 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 660 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 661 EXPECT_EQ(SubRK, AllOnes); 662 EXPECT_EQ(SubRK.getRawData(), RawDataL); 663 664 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 665 EXPECT_EQ(SubKR, Three); 666 EXPECT_EQ(SubKR.getRawData(), RawDataR); 667 } 668 } 669 670 671 // Tests different div/rem varaints using scheme (a * b + c) / a 672 void testDiv(APInt a, APInt b, APInt c) { 673 ASSERT_TRUE(a.uge(b)); // Must: a >= b 674 ASSERT_TRUE(a.ugt(c)); // Must: a > c 675 676 auto p = a * b + c; 677 678 auto q = p.udiv(a); 679 auto r = p.urem(a); 680 EXPECT_EQ(b, q); 681 EXPECT_EQ(c, r); 682 APInt::udivrem(p, a, q, r); 683 EXPECT_EQ(b, q); 684 EXPECT_EQ(c, r); 685 q = p.sdiv(a); 686 r = p.srem(a); 687 EXPECT_EQ(b, q); 688 EXPECT_EQ(c, r); 689 APInt::sdivrem(p, a, q, r); 690 EXPECT_EQ(b, q); 691 EXPECT_EQ(c, r); 692 693 if (b.ugt(c)) { // Test also symmetric case 694 q = p.udiv(b); 695 r = p.urem(b); 696 EXPECT_EQ(a, q); 697 EXPECT_EQ(c, r); 698 APInt::udivrem(p, b, q, r); 699 EXPECT_EQ(a, q); 700 EXPECT_EQ(c, r); 701 q = p.sdiv(b); 702 r = p.srem(b); 703 EXPECT_EQ(a, q); 704 EXPECT_EQ(c, r); 705 APInt::sdivrem(p, b, q, r); 706 EXPECT_EQ(a, q); 707 EXPECT_EQ(c, r); 708 } 709 } 710 711 TEST(APIntTest, divrem_big1) { 712 // Tests KnuthDiv rare step D6 713 testDiv({256, "1ffffffffffffffff", 16}, 714 {256, "1ffffffffffffffff", 16}, 715 {256, 0}); 716 } 717 718 TEST(APIntTest, divrem_big2) { 719 // Tests KnuthDiv rare step D6 720 testDiv({1024, "112233ceff" 721 "cecece000000ffffffffffffffffffff" 722 "ffffffffffffffffffffffffffffffff" 723 "ffffffffffffffffffffffffffffffff" 724 "ffffffffffffffffffffffffffffff33", 16}, 725 {1024, "111111ffffffffffffffff" 726 "ffffffffffffffffffffffffffffffff" 727 "fffffffffffffffffffffffffffffccf" 728 "ffffffffffffffffffffffffffffff00", 16}, 729 {1024, 7919}); 730 } 731 732 TEST(APIntTest, divrem_big3) { 733 // Tests KnuthDiv case without shift 734 testDiv({256, "80000001ffffffffffffffff", 16}, 735 {256, "ffffffffffffff0000000", 16}, 736 {256, 4219}); 737 } 738 739 TEST(APIntTest, divrem_big4) { 740 // Tests heap allocation in divide() enfoced by huge numbers 741 testDiv(APInt{4096, 5}.shl(2001), 742 APInt{4096, 1}.shl(2000), 743 APInt{4096, 4219*13}); 744 } 745 746 TEST(APIntTest, divrem_big5) { 747 // Tests one word divisor case of divide() 748 testDiv(APInt{1024, 19}.shl(811), 749 APInt{1024, 4356013}, // one word 750 APInt{1024, 1}); 751 } 752 753 TEST(APIntTest, divrem_big6) { 754 // Tests some rare "borrow" cases in D4 step 755 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 756 APInt{512, "10000000000000001000000000000001", 16}, 757 APInt{512, "10000000000000000000000000000000", 16}); 758 } 759 760 TEST(APIntTest, divrem_big7) { 761 // Yet another test for KnuthDiv rare step D6. 762 testDiv({224, "800000008000000200000005", 16}, 763 {224, "fffffffd", 16}, 764 {224, "80000000800000010000000f", 16}); 765 } 766 767 TEST(APIntTest, fromString) { 768 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 769 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 770 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 771 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 772 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 773 774 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 775 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 776 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 777 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 778 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 779 780 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 781 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 782 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 783 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 784 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 785 786 787 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 788 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 789 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 790 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 791 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 792 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 793 794 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 795 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 796 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 797 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 798 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 799 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 800 801 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 802 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 803 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 804 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 805 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 806 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 807 808 809 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 810 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 811 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 812 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 813 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 814 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 815 816 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 817 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 818 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 819 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 820 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 821 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 822 823 824 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 825 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 826 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 827 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 828 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 829 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 830 831 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 832 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 833 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 834 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 835 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 836 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 837 838 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 839 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 840 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 841 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 842 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 843 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 844 845 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 846 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 847 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 848 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 849 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 850 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 851 } 852 853 TEST(APIntTest, FromArray) { 854 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 855 } 856 857 TEST(APIntTest, StringBitsNeeded2) { 858 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 859 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 860 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 861 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 862 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 863 864 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 865 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 866 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 867 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 868 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 869 870 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 871 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 872 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 873 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 874 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 875 } 876 877 TEST(APIntTest, StringBitsNeeded8) { 878 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 879 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 880 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 881 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 882 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 883 884 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 885 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 886 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 887 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 888 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 889 890 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 891 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 892 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 893 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 894 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 895 } 896 897 TEST(APIntTest, StringBitsNeeded10) { 898 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 899 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 900 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 901 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 902 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 903 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 904 905 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 906 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 907 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 908 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 909 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 910 911 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 912 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 913 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 914 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 915 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 916 } 917 918 TEST(APIntTest, StringBitsNeeded16) { 919 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 920 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 921 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 922 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 923 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 924 925 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 926 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 927 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 928 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 929 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 930 931 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 932 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 933 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 934 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 935 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 936 } 937 938 TEST(APIntTest, toString) { 939 SmallString<16> S; 940 bool isSigned; 941 942 APInt(8, 0).toString(S, 2, true, true); 943 EXPECT_EQ(S.str().str(), "0b0"); 944 S.clear(); 945 APInt(8, 0).toString(S, 8, true, true); 946 EXPECT_EQ(S.str().str(), "00"); 947 S.clear(); 948 APInt(8, 0).toString(S, 10, true, true); 949 EXPECT_EQ(S.str().str(), "0"); 950 S.clear(); 951 APInt(8, 0).toString(S, 16, true, true); 952 EXPECT_EQ(S.str().str(), "0x0"); 953 S.clear(); 954 APInt(8, 0).toString(S, 36, true, false); 955 EXPECT_EQ(S.str().str(), "0"); 956 S.clear(); 957 958 isSigned = false; 959 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 960 EXPECT_EQ(S.str().str(), "0b11111111"); 961 S.clear(); 962 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 963 EXPECT_EQ(S.str().str(), "0377"); 964 S.clear(); 965 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 966 EXPECT_EQ(S.str().str(), "255"); 967 S.clear(); 968 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 969 EXPECT_EQ(S.str().str(), "0xFF"); 970 S.clear(); 971 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 972 EXPECT_EQ(S.str().str(), "73"); 973 S.clear(); 974 975 isSigned = true; 976 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 977 EXPECT_EQ(S.str().str(), "-0b1"); 978 S.clear(); 979 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 980 EXPECT_EQ(S.str().str(), "-01"); 981 S.clear(); 982 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 983 EXPECT_EQ(S.str().str(), "-1"); 984 S.clear(); 985 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 986 EXPECT_EQ(S.str().str(), "-0x1"); 987 S.clear(); 988 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 989 EXPECT_EQ(S.str().str(), "-1"); 990 S.clear(); 991 } 992 993 TEST(APIntTest, Log2) { 994 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 995 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 996 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 997 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 998 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 999 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1000 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1001 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1002 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1003 } 1004 1005 TEST(APIntTest, magic) { 1006 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 1007 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 1008 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 1009 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 1010 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 1011 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 1012 } 1013 1014 TEST(APIntTest, magicu) { 1015 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 1016 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 1017 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 1018 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 1019 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 1020 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 1021 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 1022 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 1023 } 1024 1025 #ifdef GTEST_HAS_DEATH_TEST 1026 #ifndef NDEBUG 1027 TEST(APIntTest, StringDeath) { 1028 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 1029 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 1030 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1031 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 1032 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 1033 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 1034 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 1035 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1036 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 1037 } 1038 #endif 1039 #endif 1040 1041 TEST(APIntTest, mul_clear) { 1042 APInt ValA(65, -1ULL); 1043 APInt ValB(65, 4); 1044 APInt ValC(65, 0); 1045 ValC = ValA * ValB; 1046 ValA *= ValB; 1047 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 1048 } 1049 1050 TEST(APIntTest, Rotate) { 1051 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1052 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1053 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1054 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1055 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1056 1057 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1058 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1059 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1060 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1061 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1062 1063 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1064 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1065 1066 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1067 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1068 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1069 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1070 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1071 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1072 1073 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1074 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1075 1076 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1077 1078 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1079 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1080 1081 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1082 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1083 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1084 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1085 1086 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1087 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1088 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1089 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1090 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1091 1092 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1093 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1094 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1095 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1096 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1097 1098 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1099 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1100 1101 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1102 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1103 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1104 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1105 1106 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1107 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1108 1109 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1110 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1111 1112 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1113 1114 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1115 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1116 1117 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1118 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1119 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1120 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1121 1122 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1123 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1124 EXPECT_EQ(Rot, Big.rotr(144)); 1125 1126 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1127 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1128 } 1129 1130 TEST(APIntTest, Splat) { 1131 APInt ValA(8, 0x01); 1132 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1133 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1134 1135 APInt ValB(3, 5); 1136 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1137 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1138 } 1139 1140 TEST(APIntTest, tcDecrement) { 1141 // Test single word decrement. 1142 1143 // No out borrow. 1144 { 1145 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 1146 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1147 EXPECT_EQ(carry, integerPart(0)); 1148 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 1149 } 1150 1151 // With out borrow. 1152 { 1153 integerPart singleWord = 0; 1154 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1155 EXPECT_EQ(carry, integerPart(1)); 1156 EXPECT_EQ(singleWord, ~integerPart(0)); 1157 } 1158 1159 // Test multiword decrement. 1160 1161 // No across word borrow, no out borrow. 1162 { 1163 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 1164 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 1165 APInt::tcDecrement(test, 4); 1166 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1167 } 1168 1169 // 1 across word borrow, no out borrow. 1170 { 1171 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 1172 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 1173 integerPart carry = APInt::tcDecrement(test, 4); 1174 EXPECT_EQ(carry, integerPart(0)); 1175 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1176 } 1177 1178 // 2 across word borrow, no out borrow. 1179 { 1180 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 1181 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 1182 integerPart carry = APInt::tcDecrement(test, 4); 1183 EXPECT_EQ(carry, integerPart(0)); 1184 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1185 } 1186 1187 // 3 across word borrow, no out borrow. 1188 { 1189 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 1190 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 1191 integerPart carry = APInt::tcDecrement(test, 4); 1192 EXPECT_EQ(carry, integerPart(0)); 1193 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1194 } 1195 1196 // 3 across word borrow, with out borrow. 1197 { 1198 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 1199 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 1200 integerPart carry = APInt::tcDecrement(test, 4); 1201 EXPECT_EQ(carry, integerPart(1)); 1202 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1203 } 1204 } 1205 1206 TEST(APIntTest, arrayAccess) { 1207 // Single word check. 1208 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1209 APInt A1(64, E1); 1210 for (unsigned i = 0, e = 64; i < e; ++i) { 1211 EXPECT_EQ(bool(E1 & (1ULL << i)), 1212 A1[i]); 1213 } 1214 1215 // Multiword check. 1216 integerPart E2[4] = { 1217 0xEB6EB136591CBA21ULL, 1218 0x7B9358BD6A33F10AULL, 1219 0x7E7FFA5EADD8846ULL, 1220 0x305F341CA00B613DULL 1221 }; 1222 APInt A2(integerPartWidth*4, E2); 1223 for (unsigned i = 0; i < 4; ++i) { 1224 for (unsigned j = 0; j < integerPartWidth; ++j) { 1225 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1226 A2[i*integerPartWidth + j]); 1227 } 1228 } 1229 } 1230 1231 TEST(APIntTest, LargeAPIntConstruction) { 1232 // Check that we can properly construct very large APInt. It is very 1233 // unlikely that people will ever do this, but it is a legal input, 1234 // so we should not crash on it. 1235 APInt A9(UINT32_MAX, 0); 1236 EXPECT_FALSE(A9.getBoolValue()); 1237 } 1238 1239 TEST(APIntTest, nearestLogBase2) { 1240 // Single word check. 1241 1242 // Test round up. 1243 uint64_t I1 = 0x1800001; 1244 APInt A1(64, I1); 1245 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1246 1247 // Test round down. 1248 uint64_t I2 = 0x1000011; 1249 APInt A2(64, I2); 1250 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1251 1252 // Test ties round up. 1253 uint64_t I3 = 0x1800000; 1254 APInt A3(64, I3); 1255 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1256 1257 // Multiple word check. 1258 1259 // Test round up. 1260 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 1261 APInt A4(integerPartWidth*4, I4); 1262 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1263 1264 // Test round down. 1265 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 1266 APInt A5(integerPartWidth*4, I5); 1267 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1268 1269 // Test ties round up. 1270 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1271 APInt A6(integerPartWidth*4, I6); 1272 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1273 1274 // Test BitWidth == 1 special cases. 1275 APInt A7(1, 1); 1276 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1277 APInt A8(1, 0); 1278 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1279 1280 // Test the zero case when we have a bit width large enough such 1281 // that the bit width is larger than UINT32_MAX-1. 1282 APInt A9(UINT32_MAX, 0); 1283 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1284 } 1285 1286 TEST(APIntTest, IsSplat) { 1287 APInt A(32, 0x01010101); 1288 EXPECT_FALSE(A.isSplat(1)); 1289 EXPECT_FALSE(A.isSplat(2)); 1290 EXPECT_FALSE(A.isSplat(4)); 1291 EXPECT_TRUE(A.isSplat(8)); 1292 EXPECT_TRUE(A.isSplat(16)); 1293 EXPECT_TRUE(A.isSplat(32)); 1294 1295 APInt B(24, 0xAAAAAA); 1296 EXPECT_FALSE(B.isSplat(1)); 1297 EXPECT_TRUE(B.isSplat(2)); 1298 EXPECT_TRUE(B.isSplat(4)); 1299 EXPECT_TRUE(B.isSplat(8)); 1300 EXPECT_TRUE(B.isSplat(24)); 1301 1302 APInt C(24, 0xABAAAB); 1303 EXPECT_FALSE(C.isSplat(1)); 1304 EXPECT_FALSE(C.isSplat(2)); 1305 EXPECT_FALSE(C.isSplat(4)); 1306 EXPECT_FALSE(C.isSplat(8)); 1307 EXPECT_TRUE(C.isSplat(24)); 1308 1309 APInt D(32, 0xABBAABBA); 1310 EXPECT_FALSE(D.isSplat(1)); 1311 EXPECT_FALSE(D.isSplat(2)); 1312 EXPECT_FALSE(D.isSplat(4)); 1313 EXPECT_FALSE(D.isSplat(8)); 1314 EXPECT_TRUE(D.isSplat(16)); 1315 EXPECT_TRUE(D.isSplat(32)); 1316 1317 APInt E(32, 0); 1318 EXPECT_TRUE(E.isSplat(1)); 1319 EXPECT_TRUE(E.isSplat(2)); 1320 EXPECT_TRUE(E.isSplat(4)); 1321 EXPECT_TRUE(E.isSplat(8)); 1322 EXPECT_TRUE(E.isSplat(16)); 1323 EXPECT_TRUE(E.isSplat(32)); 1324 } 1325 1326 TEST(APIntTest, isMask) { 1327 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0x01010101))); 1328 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xf0000000))); 1329 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xffff0000))); 1330 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xff << 1))); 1331 1332 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1333 EXPECT_FALSE(APIntOps::isMask(APInt(N, 0))); 1334 1335 APInt One(N, 1); 1336 for (int I = 1; I <= N; ++I) { 1337 APInt MaskVal = One.shl(I) - 1; 1338 EXPECT_TRUE(APIntOps::isMask(MaskVal)); 1339 } 1340 } 1341 } 1342 1343 #if defined(__clang__) 1344 // Disable the pragma warning from versions of Clang without -Wself-move 1345 #pragma clang diagnostic push 1346 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1347 // Disable the warning that triggers on exactly what is being tested. 1348 #pragma clang diagnostic push 1349 #pragma clang diagnostic ignored "-Wself-move" 1350 #endif 1351 TEST(APIntTest, SelfMoveAssignment) { 1352 APInt X(32, 0xdeadbeef); 1353 X = std::move(X); 1354 EXPECT_EQ(32u, X.getBitWidth()); 1355 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1356 1357 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1358 APInt Y(128, Bits); 1359 Y = std::move(Y); 1360 EXPECT_EQ(128u, Y.getBitWidth()); 1361 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1362 const uint64_t *Raw = Y.getRawData(); 1363 EXPECT_EQ(2u, Y.getNumWords()); 1364 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1365 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1366 } 1367 #if defined(__clang__) 1368 #pragma clang diagnostic pop 1369 #pragma clang diagnostic pop 1370 #endif 1371 } 1372 1373 TEST(APIntTest, reverseBits) { 1374 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1375 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1376 1377 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1378 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1379 1380 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1381 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1382 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1383 1384 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1385 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1386 1387 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1388 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1389 1390 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1391 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1392 1393 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1394 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1395 1396 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1397 1398 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1399 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1400 1401 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1402 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1403 1404 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1405 63, 64, 65, 127, 128, 257, 1024 }) { 1406 for (unsigned I = 0; I < N; ++I) { 1407 APInt X = APInt::getOneBitSet(N, I); 1408 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1409 EXPECT_EQ(Y, X.reverseBits()); 1410 EXPECT_EQ(X, Y.reverseBits()); 1411 } 1412 } 1413 } 1414