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, i128_NegativeCount) { 36 APInt Minus3(128, static_cast<uint64_t>(-3), true); 37 EXPECT_EQ(126u, Minus3.countLeadingOnes()); 38 EXPECT_EQ(-3, Minus3.getSExtValue()); 39 40 APInt Minus1(128, static_cast<uint64_t>(-1), true); 41 EXPECT_EQ(0u, Minus1.countLeadingZeros()); 42 EXPECT_EQ(128u, Minus1.countLeadingOnes()); 43 EXPECT_EQ(128u, Minus1.getActiveBits()); 44 EXPECT_EQ(0u, Minus1.countTrailingZeros()); 45 EXPECT_EQ(128u, Minus1.countTrailingOnes()); 46 EXPECT_EQ(128u, Minus1.countPopulation()); 47 EXPECT_EQ(-1, Minus1.getSExtValue()); 48 } 49 50 TEST(APIntTest, i33_Count) { 51 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 52 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 53 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 54 EXPECT_EQ(33u, i33minus2.getActiveBits()); 55 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 56 EXPECT_EQ(32u, i33minus2.countPopulation()); 57 EXPECT_EQ(-2, i33minus2.getSExtValue()); 58 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 59 } 60 61 TEST(APIntTest, i65_Count) { 62 APInt i65(65, 0, true); 63 EXPECT_EQ(65u, i65.countLeadingZeros()); 64 EXPECT_EQ(0u, i65.countLeadingOnes()); 65 EXPECT_EQ(0u, i65.getActiveBits()); 66 EXPECT_EQ(1u, i65.getActiveWords()); 67 EXPECT_EQ(65u, i65.countTrailingZeros()); 68 EXPECT_EQ(0u, i65.countPopulation()); 69 70 APInt i65minus(65, 0, true); 71 i65minus.setBit(64); 72 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 73 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 74 EXPECT_EQ(65u, i65minus.getActiveBits()); 75 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 76 EXPECT_EQ(1u, i65minus.countPopulation()); 77 } 78 79 TEST(APIntTest, i128_PositiveCount) { 80 APInt u128max = APInt::getAllOnesValue(128); 81 EXPECT_EQ(128u, u128max.countLeadingOnes()); 82 EXPECT_EQ(0u, u128max.countLeadingZeros()); 83 EXPECT_EQ(128u, u128max.getActiveBits()); 84 EXPECT_EQ(0u, u128max.countTrailingZeros()); 85 EXPECT_EQ(128u, u128max.countTrailingOnes()); 86 EXPECT_EQ(128u, u128max.countPopulation()); 87 88 APInt u64max(128, static_cast<uint64_t>(-1), false); 89 EXPECT_EQ(64u, u64max.countLeadingZeros()); 90 EXPECT_EQ(0u, u64max.countLeadingOnes()); 91 EXPECT_EQ(64u, u64max.getActiveBits()); 92 EXPECT_EQ(0u, u64max.countTrailingZeros()); 93 EXPECT_EQ(64u, u64max.countTrailingOnes()); 94 EXPECT_EQ(64u, u64max.countPopulation()); 95 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 96 97 APInt zero(128, 0, true); 98 EXPECT_EQ(128u, zero.countLeadingZeros()); 99 EXPECT_EQ(0u, zero.countLeadingOnes()); 100 EXPECT_EQ(0u, zero.getActiveBits()); 101 EXPECT_EQ(128u, zero.countTrailingZeros()); 102 EXPECT_EQ(0u, zero.countTrailingOnes()); 103 EXPECT_EQ(0u, zero.countPopulation()); 104 EXPECT_EQ(0u, zero.getSExtValue()); 105 EXPECT_EQ(0u, zero.getZExtValue()); 106 107 APInt one(128, 1, true); 108 EXPECT_EQ(127u, one.countLeadingZeros()); 109 EXPECT_EQ(0u, one.countLeadingOnes()); 110 EXPECT_EQ(1u, one.getActiveBits()); 111 EXPECT_EQ(0u, one.countTrailingZeros()); 112 EXPECT_EQ(1u, one.countTrailingOnes()); 113 EXPECT_EQ(1u, one.countPopulation()); 114 EXPECT_EQ(1, one.getSExtValue()); 115 EXPECT_EQ(1u, one.getZExtValue()); 116 } 117 118 TEST(APIntTest, i1) { 119 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 120 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 121 const APInt zero(1, 0); 122 const APInt one(1, 1); 123 const APInt two(1, 2); 124 125 EXPECT_EQ(0, neg_two.getSExtValue()); 126 EXPECT_EQ(-1, neg_one.getSExtValue()); 127 EXPECT_EQ(1u, neg_one.getZExtValue()); 128 EXPECT_EQ(0u, zero.getZExtValue()); 129 EXPECT_EQ(-1, one.getSExtValue()); 130 EXPECT_EQ(1u, one.getZExtValue()); 131 EXPECT_EQ(0u, two.getZExtValue()); 132 EXPECT_EQ(0, two.getSExtValue()); 133 134 // Basic equalities for 1-bit values. 135 EXPECT_EQ(zero, two); 136 EXPECT_EQ(zero, neg_two); 137 EXPECT_EQ(one, neg_one); 138 EXPECT_EQ(two, neg_two); 139 140 // Min/max signed values. 141 EXPECT_TRUE(zero.isMaxSignedValue()); 142 EXPECT_FALSE(one.isMaxSignedValue()); 143 EXPECT_FALSE(zero.isMinSignedValue()); 144 EXPECT_TRUE(one.isMinSignedValue()); 145 146 // Additions. 147 EXPECT_EQ(two, one + one); 148 EXPECT_EQ(zero, neg_one + one); 149 EXPECT_EQ(neg_two, neg_one + neg_one); 150 151 // Subtractions. 152 EXPECT_EQ(neg_two, neg_one - one); 153 EXPECT_EQ(two, one - neg_one); 154 EXPECT_EQ(zero, one - one); 155 156 // Shifts. 157 EXPECT_EQ(zero, one << one); 158 EXPECT_EQ(one, one << zero); 159 EXPECT_EQ(zero, one.shl(1)); 160 EXPECT_EQ(one, one.shl(0)); 161 EXPECT_EQ(zero, one.lshr(1)); 162 EXPECT_EQ(zero, one.ashr(1)); 163 164 // Rotates. 165 EXPECT_EQ(one, one.rotl(0)); 166 EXPECT_EQ(one, one.rotl(1)); 167 EXPECT_EQ(one, one.rotr(0)); 168 EXPECT_EQ(one, one.rotr(1)); 169 170 // Multiplies. 171 EXPECT_EQ(neg_one, neg_one * one); 172 EXPECT_EQ(neg_one, one * neg_one); 173 EXPECT_EQ(one, neg_one * neg_one); 174 EXPECT_EQ(one, one * one); 175 176 // Divides. 177 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 178 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 179 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 180 EXPECT_EQ(one, one.sdiv(one)); 181 182 EXPECT_EQ(neg_one, one.udiv(neg_one)); 183 EXPECT_EQ(neg_one, neg_one.udiv(one)); 184 EXPECT_EQ(one, neg_one.udiv(neg_one)); 185 EXPECT_EQ(one, one.udiv(one)); 186 187 // Remainders. 188 EXPECT_EQ(zero, neg_one.srem(one)); 189 EXPECT_EQ(zero, neg_one.urem(one)); 190 EXPECT_EQ(zero, one.srem(neg_one)); 191 192 // sdivrem 193 { 194 APInt q(8, 0); 195 APInt r(8, 0); 196 APInt one(8, 1); 197 APInt two(8, 2); 198 APInt nine(8, 9); 199 APInt four(8, 4); 200 201 EXPECT_EQ(nine.srem(two), one); 202 EXPECT_EQ(nine.srem(-two), one); 203 EXPECT_EQ((-nine).srem(two), -one); 204 EXPECT_EQ((-nine).srem(-two), -one); 205 206 APInt::sdivrem(nine, two, q, r); 207 EXPECT_EQ(four, q); 208 EXPECT_EQ(one, r); 209 APInt::sdivrem(-nine, two, q, r); 210 EXPECT_EQ(-four, q); 211 EXPECT_EQ(-one, r); 212 APInt::sdivrem(nine, -two, q, r); 213 EXPECT_EQ(-four, q); 214 EXPECT_EQ(one, r); 215 APInt::sdivrem(-nine, -two, q, r); 216 EXPECT_EQ(four, q); 217 EXPECT_EQ(-one, r); 218 } 219 } 220 221 TEST(APIntTest, compare) { 222 std::array<APInt, 5> testVals{{ 223 APInt{16, 2}, 224 APInt{16, 1}, 225 APInt{16, 0}, 226 APInt{16, (uint64_t)-1, true}, 227 APInt{16, (uint64_t)-2, true}, 228 }}; 229 230 for (auto &arg1 : testVals) 231 for (auto &arg2 : testVals) { 232 auto uv1 = arg1.getZExtValue(); 233 auto uv2 = arg2.getZExtValue(); 234 auto sv1 = arg1.getSExtValue(); 235 auto sv2 = arg2.getSExtValue(); 236 237 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 238 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 239 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 240 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 241 242 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 243 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 244 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 245 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 246 247 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 248 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 249 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 250 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 251 252 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 253 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 254 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 255 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 256 } 257 } 258 259 TEST(APIntTest, compareWithRawIntegers) { 260 EXPECT_TRUE(!APInt(8, 1).uge(256)); 261 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 262 EXPECT_TRUE( APInt(8, 1).ule(256)); 263 EXPECT_TRUE( APInt(8, 1).ult(256)); 264 EXPECT_TRUE(!APInt(8, 1).sge(256)); 265 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 266 EXPECT_TRUE( APInt(8, 1).sle(256)); 267 EXPECT_TRUE( APInt(8, 1).slt(256)); 268 EXPECT_TRUE(!(APInt(8, 0) == 256)); 269 EXPECT_TRUE( APInt(8, 0) != 256); 270 EXPECT_TRUE(!(APInt(8, 1) == 256)); 271 EXPECT_TRUE( APInt(8, 1) != 256); 272 273 auto uint64max = UINT64_MAX; 274 auto int64max = INT64_MAX; 275 auto int64min = INT64_MIN; 276 277 auto u64 = APInt{128, uint64max}; 278 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 279 auto big = u64 + 1; 280 281 EXPECT_TRUE( u64.uge(uint64max)); 282 EXPECT_TRUE(!u64.ugt(uint64max)); 283 EXPECT_TRUE( u64.ule(uint64max)); 284 EXPECT_TRUE(!u64.ult(uint64max)); 285 EXPECT_TRUE( u64.sge(int64max)); 286 EXPECT_TRUE( u64.sgt(int64max)); 287 EXPECT_TRUE(!u64.sle(int64max)); 288 EXPECT_TRUE(!u64.slt(int64max)); 289 EXPECT_TRUE( u64.sge(int64min)); 290 EXPECT_TRUE( u64.sgt(int64min)); 291 EXPECT_TRUE(!u64.sle(int64min)); 292 EXPECT_TRUE(!u64.slt(int64min)); 293 294 EXPECT_TRUE(u64 == uint64max); 295 EXPECT_TRUE(u64 != int64max); 296 EXPECT_TRUE(u64 != int64min); 297 298 EXPECT_TRUE(!s64.uge(uint64max)); 299 EXPECT_TRUE(!s64.ugt(uint64max)); 300 EXPECT_TRUE( s64.ule(uint64max)); 301 EXPECT_TRUE( s64.ult(uint64max)); 302 EXPECT_TRUE( s64.sge(int64max)); 303 EXPECT_TRUE(!s64.sgt(int64max)); 304 EXPECT_TRUE( s64.sle(int64max)); 305 EXPECT_TRUE(!s64.slt(int64max)); 306 EXPECT_TRUE( s64.sge(int64min)); 307 EXPECT_TRUE( s64.sgt(int64min)); 308 EXPECT_TRUE(!s64.sle(int64min)); 309 EXPECT_TRUE(!s64.slt(int64min)); 310 311 EXPECT_TRUE(s64 != uint64max); 312 EXPECT_TRUE(s64 == int64max); 313 EXPECT_TRUE(s64 != int64min); 314 315 EXPECT_TRUE( big.uge(uint64max)); 316 EXPECT_TRUE( big.ugt(uint64max)); 317 EXPECT_TRUE(!big.ule(uint64max)); 318 EXPECT_TRUE(!big.ult(uint64max)); 319 EXPECT_TRUE( big.sge(int64max)); 320 EXPECT_TRUE( big.sgt(int64max)); 321 EXPECT_TRUE(!big.sle(int64max)); 322 EXPECT_TRUE(!big.slt(int64max)); 323 EXPECT_TRUE( big.sge(int64min)); 324 EXPECT_TRUE( big.sgt(int64min)); 325 EXPECT_TRUE(!big.sle(int64min)); 326 EXPECT_TRUE(!big.slt(int64min)); 327 328 EXPECT_TRUE(big != uint64max); 329 EXPECT_TRUE(big != int64max); 330 EXPECT_TRUE(big != int64min); 331 } 332 333 TEST(APIntTest, compareWithInt64Min) { 334 int64_t edge = INT64_MIN; 335 int64_t edgeP1 = edge + 1; 336 int64_t edgeM1 = INT64_MAX; 337 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 338 339 EXPECT_TRUE(!a.slt(edge)); 340 EXPECT_TRUE( a.sle(edge)); 341 EXPECT_TRUE(!a.sgt(edge)); 342 EXPECT_TRUE( a.sge(edge)); 343 EXPECT_TRUE( a.slt(edgeP1)); 344 EXPECT_TRUE( a.sle(edgeP1)); 345 EXPECT_TRUE(!a.sgt(edgeP1)); 346 EXPECT_TRUE(!a.sge(edgeP1)); 347 EXPECT_TRUE( a.slt(edgeM1)); 348 EXPECT_TRUE( a.sle(edgeM1)); 349 EXPECT_TRUE(!a.sgt(edgeM1)); 350 EXPECT_TRUE(!a.sge(edgeM1)); 351 } 352 353 TEST(APIntTest, compareWithHalfInt64Max) { 354 uint64_t edge = 0x4000000000000000; 355 uint64_t edgeP1 = edge + 1; 356 uint64_t edgeM1 = edge - 1; 357 auto a = APInt{64, edge}; 358 359 EXPECT_TRUE(!a.ult(edge)); 360 EXPECT_TRUE( a.ule(edge)); 361 EXPECT_TRUE(!a.ugt(edge)); 362 EXPECT_TRUE( a.uge(edge)); 363 EXPECT_TRUE( a.ult(edgeP1)); 364 EXPECT_TRUE( a.ule(edgeP1)); 365 EXPECT_TRUE(!a.ugt(edgeP1)); 366 EXPECT_TRUE(!a.uge(edgeP1)); 367 EXPECT_TRUE(!a.ult(edgeM1)); 368 EXPECT_TRUE(!a.ule(edgeM1)); 369 EXPECT_TRUE( a.ugt(edgeM1)); 370 EXPECT_TRUE( a.uge(edgeM1)); 371 372 EXPECT_TRUE(!a.slt(edge)); 373 EXPECT_TRUE( a.sle(edge)); 374 EXPECT_TRUE(!a.sgt(edge)); 375 EXPECT_TRUE( a.sge(edge)); 376 EXPECT_TRUE( a.slt(edgeP1)); 377 EXPECT_TRUE( a.sle(edgeP1)); 378 EXPECT_TRUE(!a.sgt(edgeP1)); 379 EXPECT_TRUE(!a.sge(edgeP1)); 380 EXPECT_TRUE(!a.slt(edgeM1)); 381 EXPECT_TRUE(!a.sle(edgeM1)); 382 EXPECT_TRUE( a.sgt(edgeM1)); 383 EXPECT_TRUE( a.sge(edgeM1)); 384 } 385 386 TEST(APIntTest, compareLargeIntegers) { 387 // Make sure all the combinations of signed comparisons work with big ints. 388 auto One = APInt{128, static_cast<uint64_t>(1), true}; 389 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 390 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 391 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 392 393 EXPECT_TRUE(!One.slt(One)); 394 EXPECT_TRUE(!Two.slt(One)); 395 EXPECT_TRUE(MinusOne.slt(One)); 396 EXPECT_TRUE(MinusTwo.slt(One)); 397 398 EXPECT_TRUE(One.slt(Two)); 399 EXPECT_TRUE(!Two.slt(Two)); 400 EXPECT_TRUE(MinusOne.slt(Two)); 401 EXPECT_TRUE(MinusTwo.slt(Two)); 402 403 EXPECT_TRUE(!One.slt(MinusOne)); 404 EXPECT_TRUE(!Two.slt(MinusOne)); 405 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 406 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 407 408 EXPECT_TRUE(!One.slt(MinusTwo)); 409 EXPECT_TRUE(!Two.slt(MinusTwo)); 410 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 411 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 412 } 413 414 TEST(APIntTest, rvalue_arithmetic) { 415 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 416 417 // Lamdba to return an APInt by value, but also provide the raw value of the 418 // allocated data. 419 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 420 APInt V(129, HexString, 16); 421 RawData = V.getRawData(); 422 return V; 423 }; 424 425 APInt One(129, "1", 16); 426 APInt Two(129, "2", 16); 427 APInt Three(129, "3", 16); 428 APInt MinusOne = -One; 429 430 const uint64_t *RawDataL = nullptr; 431 const uint64_t *RawDataR = nullptr; 432 433 { 434 // 1 + 1 = 2 435 APInt AddLL = One + One; 436 EXPECT_EQ(AddLL, Two); 437 438 APInt AddLR = One + getRValue("1", RawDataR); 439 EXPECT_EQ(AddLR, Two); 440 EXPECT_EQ(AddLR.getRawData(), RawDataR); 441 442 APInt AddRL = getRValue("1", RawDataL) + One; 443 EXPECT_EQ(AddRL, Two); 444 EXPECT_EQ(AddRL.getRawData(), RawDataL); 445 446 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 447 EXPECT_EQ(AddRR, Two); 448 EXPECT_EQ(AddRR.getRawData(), RawDataR); 449 450 // LValue's and constants 451 APInt AddLK = One + 1; 452 EXPECT_EQ(AddLK, Two); 453 454 APInt AddKL = 1 + One; 455 EXPECT_EQ(AddKL, Two); 456 457 // RValue's and constants 458 APInt AddRK = getRValue("1", RawDataL) + 1; 459 EXPECT_EQ(AddRK, Two); 460 EXPECT_EQ(AddRK.getRawData(), RawDataL); 461 462 APInt AddKR = 1 + getRValue("1", RawDataR); 463 EXPECT_EQ(AddKR, Two); 464 EXPECT_EQ(AddKR.getRawData(), RawDataR); 465 } 466 467 { 468 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 469 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 470 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 471 472 APInt AddLL = AllOnes + Two; 473 EXPECT_EQ(AddLL, HighOneLowOne); 474 475 APInt AddLR = AllOnes + getRValue("2", RawDataR); 476 EXPECT_EQ(AddLR, HighOneLowOne); 477 EXPECT_EQ(AddLR.getRawData(), RawDataR); 478 479 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 480 EXPECT_EQ(AddRL, HighOneLowOne); 481 EXPECT_EQ(AddRL.getRawData(), RawDataL); 482 483 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 484 getRValue("2", RawDataR); 485 EXPECT_EQ(AddRR, HighOneLowOne); 486 EXPECT_EQ(AddRR.getRawData(), RawDataR); 487 488 // LValue's and constants 489 APInt AddLK = AllOnes + 2; 490 EXPECT_EQ(AddLK, HighOneLowOne); 491 492 APInt AddKL = 2 + AllOnes; 493 EXPECT_EQ(AddKL, HighOneLowOne); 494 495 // RValue's and constants 496 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 497 EXPECT_EQ(AddRK, HighOneLowOne); 498 EXPECT_EQ(AddRK.getRawData(), RawDataL); 499 500 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 501 EXPECT_EQ(AddKR, HighOneLowOne); 502 EXPECT_EQ(AddKR.getRawData(), RawDataR); 503 } 504 505 { 506 // 2 - 1 = 1 507 APInt SubLL = Two - One; 508 EXPECT_EQ(SubLL, One); 509 510 APInt SubLR = Two - getRValue("1", RawDataR); 511 EXPECT_EQ(SubLR, One); 512 EXPECT_EQ(SubLR.getRawData(), RawDataR); 513 514 APInt SubRL = getRValue("2", RawDataL) - One; 515 EXPECT_EQ(SubRL, One); 516 EXPECT_EQ(SubRL.getRawData(), RawDataL); 517 518 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 519 EXPECT_EQ(SubRR, One); 520 EXPECT_EQ(SubRR.getRawData(), RawDataR); 521 522 // LValue's and constants 523 APInt SubLK = Two - 1; 524 EXPECT_EQ(SubLK, One); 525 526 APInt SubKL = 2 - One; 527 EXPECT_EQ(SubKL, One); 528 529 // RValue's and constants 530 APInt SubRK = getRValue("2", RawDataL) - 1; 531 EXPECT_EQ(SubRK, One); 532 EXPECT_EQ(SubRK.getRawData(), RawDataL); 533 534 APInt SubKR = 2 - getRValue("1", RawDataR); 535 EXPECT_EQ(SubKR, One); 536 EXPECT_EQ(SubKR.getRawData(), RawDataR); 537 } 538 539 { 540 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 541 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 542 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 543 544 APInt SubLL = HighOneLowOne - AllOnes; 545 EXPECT_EQ(SubLL, Two); 546 547 APInt SubLR = HighOneLowOne - 548 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 549 EXPECT_EQ(SubLR, Two); 550 EXPECT_EQ(SubLR.getRawData(), RawDataR); 551 552 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 553 AllOnes; 554 EXPECT_EQ(SubRL, Two); 555 EXPECT_EQ(SubRL.getRawData(), RawDataL); 556 557 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 558 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 559 EXPECT_EQ(SubRR, Two); 560 EXPECT_EQ(SubRR.getRawData(), RawDataR); 561 562 // LValue's and constants 563 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 564 APInt SubLK = HighOneLowOne - 2; 565 EXPECT_EQ(SubLK, AllOnes); 566 567 // 2 - (-1) = 3 568 APInt SubKL = 2 - MinusOne; 569 EXPECT_EQ(SubKL, Three); 570 571 // RValue's and constants 572 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 573 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 574 EXPECT_EQ(SubRK, AllOnes); 575 EXPECT_EQ(SubRK.getRawData(), RawDataL); 576 577 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 578 EXPECT_EQ(SubKR, Three); 579 EXPECT_EQ(SubKR.getRawData(), RawDataR); 580 } 581 } 582 583 584 // Tests different div/rem varaints using scheme (a * b + c) / a 585 void testDiv(APInt a, APInt b, APInt c) { 586 ASSERT_TRUE(a.uge(b)); // Must: a >= b 587 ASSERT_TRUE(a.ugt(c)); // Must: a > c 588 589 auto p = a * b + c; 590 591 auto q = p.udiv(a); 592 auto r = p.urem(a); 593 EXPECT_EQ(b, q); 594 EXPECT_EQ(c, r); 595 APInt::udivrem(p, a, q, r); 596 EXPECT_EQ(b, q); 597 EXPECT_EQ(c, r); 598 q = p.sdiv(a); 599 r = p.srem(a); 600 EXPECT_EQ(b, q); 601 EXPECT_EQ(c, r); 602 APInt::sdivrem(p, a, q, r); 603 EXPECT_EQ(b, q); 604 EXPECT_EQ(c, r); 605 606 if (b.ugt(c)) { // Test also symmetric case 607 q = p.udiv(b); 608 r = p.urem(b); 609 EXPECT_EQ(a, q); 610 EXPECT_EQ(c, r); 611 APInt::udivrem(p, b, q, r); 612 EXPECT_EQ(a, q); 613 EXPECT_EQ(c, r); 614 q = p.sdiv(b); 615 r = p.srem(b); 616 EXPECT_EQ(a, q); 617 EXPECT_EQ(c, r); 618 APInt::sdivrem(p, b, q, r); 619 EXPECT_EQ(a, q); 620 EXPECT_EQ(c, r); 621 } 622 } 623 624 TEST(APIntTest, divrem_big1) { 625 // Tests KnuthDiv rare step D6 626 testDiv({256, "1ffffffffffffffff", 16}, 627 {256, "1ffffffffffffffff", 16}, 628 {256, 0}); 629 } 630 631 TEST(APIntTest, divrem_big2) { 632 // Tests KnuthDiv rare step D6 633 testDiv({1024, "112233ceff" 634 "cecece000000ffffffffffffffffffff" 635 "ffffffffffffffffffffffffffffffff" 636 "ffffffffffffffffffffffffffffffff" 637 "ffffffffffffffffffffffffffffff33", 16}, 638 {1024, "111111ffffffffffffffff" 639 "ffffffffffffffffffffffffffffffff" 640 "fffffffffffffffffffffffffffffccf" 641 "ffffffffffffffffffffffffffffff00", 16}, 642 {1024, 7919}); 643 } 644 645 TEST(APIntTest, divrem_big3) { 646 // Tests KnuthDiv case without shift 647 testDiv({256, "80000001ffffffffffffffff", 16}, 648 {256, "ffffffffffffff0000000", 16}, 649 {256, 4219}); 650 } 651 652 TEST(APIntTest, divrem_big4) { 653 // Tests heap allocation in divide() enfoced by huge numbers 654 testDiv(APInt{4096, 5}.shl(2001), 655 APInt{4096, 1}.shl(2000), 656 APInt{4096, 4219*13}); 657 } 658 659 TEST(APIntTest, divrem_big5) { 660 // Tests one word divisor case of divide() 661 testDiv(APInt{1024, 19}.shl(811), 662 APInt{1024, 4356013}, // one word 663 APInt{1024, 1}); 664 } 665 666 TEST(APIntTest, divrem_big6) { 667 // Tests some rare "borrow" cases in D4 step 668 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 669 APInt{512, "10000000000000001000000000000001", 16}, 670 APInt{512, "10000000000000000000000000000000", 16}); 671 } 672 673 TEST(APIntTest, divrem_big7) { 674 // Yet another test for KnuthDiv rare step D6. 675 testDiv({224, "800000008000000200000005", 16}, 676 {224, "fffffffd", 16}, 677 {224, "80000000800000010000000f", 16}); 678 } 679 680 TEST(APIntTest, fromString) { 681 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 682 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 683 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 684 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 685 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 686 687 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 688 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 689 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 690 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 691 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 692 693 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 694 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 695 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 696 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 697 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 698 699 700 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 701 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 702 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 703 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 704 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 705 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 706 707 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 708 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 709 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 710 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 711 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 712 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 713 714 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 715 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 716 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 717 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 718 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 719 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 720 721 722 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 723 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 724 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 725 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 726 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 727 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 728 729 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 730 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 731 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 732 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 733 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 734 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 735 736 737 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 738 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 739 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 740 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 741 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 742 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 743 744 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 745 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 746 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 747 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 748 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 749 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 750 751 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 752 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 753 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 754 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 755 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 756 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 757 758 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 759 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 760 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 761 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 762 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 763 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 764 } 765 766 TEST(APIntTest, FromArray) { 767 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 768 } 769 770 TEST(APIntTest, StringBitsNeeded2) { 771 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 772 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 773 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 774 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 775 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 776 777 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 778 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 779 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 780 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 781 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 782 783 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 784 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 785 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 786 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 787 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 788 } 789 790 TEST(APIntTest, StringBitsNeeded8) { 791 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 792 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 793 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 794 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 795 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 796 797 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 798 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 799 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 800 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 801 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 802 803 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 804 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 805 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 806 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 807 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 808 } 809 810 TEST(APIntTest, StringBitsNeeded10) { 811 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 812 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 813 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 814 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 815 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 816 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 817 818 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 819 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 820 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 821 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 822 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 823 824 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 825 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 826 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 827 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 828 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 829 } 830 831 TEST(APIntTest, StringBitsNeeded16) { 832 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 833 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 834 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 835 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 836 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 837 838 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 839 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 840 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 841 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 842 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 843 844 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 845 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 846 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 847 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 848 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 849 } 850 851 TEST(APIntTest, toString) { 852 SmallString<16> S; 853 bool isSigned; 854 855 APInt(8, 0).toString(S, 2, true, true); 856 EXPECT_EQ(S.str().str(), "0b0"); 857 S.clear(); 858 APInt(8, 0).toString(S, 8, true, true); 859 EXPECT_EQ(S.str().str(), "00"); 860 S.clear(); 861 APInt(8, 0).toString(S, 10, true, true); 862 EXPECT_EQ(S.str().str(), "0"); 863 S.clear(); 864 APInt(8, 0).toString(S, 16, true, true); 865 EXPECT_EQ(S.str().str(), "0x0"); 866 S.clear(); 867 APInt(8, 0).toString(S, 36, true, false); 868 EXPECT_EQ(S.str().str(), "0"); 869 S.clear(); 870 871 isSigned = false; 872 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 873 EXPECT_EQ(S.str().str(), "0b11111111"); 874 S.clear(); 875 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 876 EXPECT_EQ(S.str().str(), "0377"); 877 S.clear(); 878 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 879 EXPECT_EQ(S.str().str(), "255"); 880 S.clear(); 881 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 882 EXPECT_EQ(S.str().str(), "0xFF"); 883 S.clear(); 884 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 885 EXPECT_EQ(S.str().str(), "73"); 886 S.clear(); 887 888 isSigned = true; 889 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 890 EXPECT_EQ(S.str().str(), "-0b1"); 891 S.clear(); 892 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 893 EXPECT_EQ(S.str().str(), "-01"); 894 S.clear(); 895 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 896 EXPECT_EQ(S.str().str(), "-1"); 897 S.clear(); 898 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 899 EXPECT_EQ(S.str().str(), "-0x1"); 900 S.clear(); 901 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 902 EXPECT_EQ(S.str().str(), "-1"); 903 S.clear(); 904 } 905 906 TEST(APIntTest, Log2) { 907 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 908 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 909 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 910 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 911 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 912 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 913 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 914 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 915 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 916 } 917 918 TEST(APIntTest, magic) { 919 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 920 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 921 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 922 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 923 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 924 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 925 } 926 927 TEST(APIntTest, magicu) { 928 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 929 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 930 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 931 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 932 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 933 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 934 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 935 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 936 } 937 938 #ifdef GTEST_HAS_DEATH_TEST 939 #ifndef NDEBUG 940 TEST(APIntTest, StringDeath) { 941 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 942 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 943 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 944 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 945 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 946 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 947 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 948 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 949 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 950 } 951 #endif 952 #endif 953 954 TEST(APIntTest, mul_clear) { 955 APInt ValA(65, -1ULL); 956 APInt ValB(65, 4); 957 APInt ValC(65, 0); 958 ValC = ValA * ValB; 959 ValA *= ValB; 960 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 961 } 962 963 TEST(APIntTest, Rotate) { 964 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 965 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 966 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 967 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 968 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 969 970 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 971 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 972 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 973 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 974 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 975 976 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 977 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 978 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 979 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 980 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 981 982 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 983 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 984 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 985 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 986 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 987 988 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16); 989 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16); 990 EXPECT_EQ(Rot, Big.rotr(144)); 991 } 992 993 TEST(APIntTest, Splat) { 994 APInt ValA(8, 0x01); 995 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 996 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 997 998 APInt ValB(3, 5); 999 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1000 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1001 } 1002 1003 TEST(APIntTest, tcDecrement) { 1004 // Test single word decrement. 1005 1006 // No out borrow. 1007 { 1008 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 1009 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1010 EXPECT_EQ(carry, integerPart(0)); 1011 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 1012 } 1013 1014 // With out borrow. 1015 { 1016 integerPart singleWord = 0; 1017 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1018 EXPECT_EQ(carry, integerPart(1)); 1019 EXPECT_EQ(singleWord, ~integerPart(0)); 1020 } 1021 1022 // Test multiword decrement. 1023 1024 // No across word borrow, no out borrow. 1025 { 1026 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 1027 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 1028 APInt::tcDecrement(test, 4); 1029 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1030 } 1031 1032 // 1 across word borrow, no out borrow. 1033 { 1034 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 1035 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 1036 integerPart carry = APInt::tcDecrement(test, 4); 1037 EXPECT_EQ(carry, integerPart(0)); 1038 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1039 } 1040 1041 // 2 across word borrow, no out borrow. 1042 { 1043 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 1044 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 1045 integerPart carry = APInt::tcDecrement(test, 4); 1046 EXPECT_EQ(carry, integerPart(0)); 1047 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1048 } 1049 1050 // 3 across word borrow, no out borrow. 1051 { 1052 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 1053 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 1054 integerPart carry = APInt::tcDecrement(test, 4); 1055 EXPECT_EQ(carry, integerPart(0)); 1056 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1057 } 1058 1059 // 3 across word borrow, with out borrow. 1060 { 1061 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 1062 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 1063 integerPart carry = APInt::tcDecrement(test, 4); 1064 EXPECT_EQ(carry, integerPart(1)); 1065 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1066 } 1067 } 1068 1069 TEST(APIntTest, arrayAccess) { 1070 // Single word check. 1071 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1072 APInt A1(64, E1); 1073 for (unsigned i = 0, e = 64; i < e; ++i) { 1074 EXPECT_EQ(bool(E1 & (1ULL << i)), 1075 A1[i]); 1076 } 1077 1078 // Multiword check. 1079 integerPart E2[4] = { 1080 0xEB6EB136591CBA21ULL, 1081 0x7B9358BD6A33F10AULL, 1082 0x7E7FFA5EADD8846ULL, 1083 0x305F341CA00B613DULL 1084 }; 1085 APInt A2(integerPartWidth*4, E2); 1086 for (unsigned i = 0; i < 4; ++i) { 1087 for (unsigned j = 0; j < integerPartWidth; ++j) { 1088 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1089 A2[i*integerPartWidth + j]); 1090 } 1091 } 1092 } 1093 1094 TEST(APIntTest, LargeAPIntConstruction) { 1095 // Check that we can properly construct very large APInt. It is very 1096 // unlikely that people will ever do this, but it is a legal input, 1097 // so we should not crash on it. 1098 APInt A9(UINT32_MAX, 0); 1099 EXPECT_FALSE(A9.getBoolValue()); 1100 } 1101 1102 TEST(APIntTest, nearestLogBase2) { 1103 // Single word check. 1104 1105 // Test round up. 1106 uint64_t I1 = 0x1800001; 1107 APInt A1(64, I1); 1108 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1109 1110 // Test round down. 1111 uint64_t I2 = 0x1000011; 1112 APInt A2(64, I2); 1113 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1114 1115 // Test ties round up. 1116 uint64_t I3 = 0x1800000; 1117 APInt A3(64, I3); 1118 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1119 1120 // Multiple word check. 1121 1122 // Test round up. 1123 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 1124 APInt A4(integerPartWidth*4, I4); 1125 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1126 1127 // Test round down. 1128 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 1129 APInt A5(integerPartWidth*4, I5); 1130 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1131 1132 // Test ties round up. 1133 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1134 APInt A6(integerPartWidth*4, I6); 1135 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1136 1137 // Test BitWidth == 1 special cases. 1138 APInt A7(1, 1); 1139 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1140 APInt A8(1, 0); 1141 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1142 1143 // Test the zero case when we have a bit width large enough such 1144 // that the bit width is larger than UINT32_MAX-1. 1145 APInt A9(UINT32_MAX, 0); 1146 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1147 } 1148 1149 TEST(APIntTest, IsSplat) { 1150 APInt A(32, 0x01010101); 1151 EXPECT_FALSE(A.isSplat(1)); 1152 EXPECT_FALSE(A.isSplat(2)); 1153 EXPECT_FALSE(A.isSplat(4)); 1154 EXPECT_TRUE(A.isSplat(8)); 1155 EXPECT_TRUE(A.isSplat(16)); 1156 EXPECT_TRUE(A.isSplat(32)); 1157 1158 APInt B(24, 0xAAAAAA); 1159 EXPECT_FALSE(B.isSplat(1)); 1160 EXPECT_TRUE(B.isSplat(2)); 1161 EXPECT_TRUE(B.isSplat(4)); 1162 EXPECT_TRUE(B.isSplat(8)); 1163 EXPECT_TRUE(B.isSplat(24)); 1164 1165 APInt C(24, 0xABAAAB); 1166 EXPECT_FALSE(C.isSplat(1)); 1167 EXPECT_FALSE(C.isSplat(2)); 1168 EXPECT_FALSE(C.isSplat(4)); 1169 EXPECT_FALSE(C.isSplat(8)); 1170 EXPECT_TRUE(C.isSplat(24)); 1171 1172 APInt D(32, 0xABBAABBA); 1173 EXPECT_FALSE(D.isSplat(1)); 1174 EXPECT_FALSE(D.isSplat(2)); 1175 EXPECT_FALSE(D.isSplat(4)); 1176 EXPECT_FALSE(D.isSplat(8)); 1177 EXPECT_TRUE(D.isSplat(16)); 1178 EXPECT_TRUE(D.isSplat(32)); 1179 1180 APInt E(32, 0); 1181 EXPECT_TRUE(E.isSplat(1)); 1182 EXPECT_TRUE(E.isSplat(2)); 1183 EXPECT_TRUE(E.isSplat(4)); 1184 EXPECT_TRUE(E.isSplat(8)); 1185 EXPECT_TRUE(E.isSplat(16)); 1186 EXPECT_TRUE(E.isSplat(32)); 1187 } 1188 1189 TEST(APIntTest, isMask) { 1190 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0x01010101))); 1191 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xf0000000))); 1192 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xffff0000))); 1193 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xff << 1))); 1194 1195 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1196 EXPECT_FALSE(APIntOps::isMask(APInt(N, 0))); 1197 1198 APInt One(N, 1); 1199 for (int I = 1; I <= N; ++I) { 1200 APInt MaskVal = One.shl(I) - 1; 1201 EXPECT_TRUE(APIntOps::isMask(MaskVal)); 1202 } 1203 } 1204 } 1205 1206 #if defined(__clang__) 1207 // Disable the pragma warning from versions of Clang without -Wself-move 1208 #pragma clang diagnostic push 1209 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1210 // Disable the warning that triggers on exactly what is being tested. 1211 #pragma clang diagnostic push 1212 #pragma clang diagnostic ignored "-Wself-move" 1213 #endif 1214 TEST(APIntTest, SelfMoveAssignment) { 1215 APInt X(32, 0xdeadbeef); 1216 X = std::move(X); 1217 EXPECT_EQ(32u, X.getBitWidth()); 1218 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1219 1220 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1221 APInt Y(128, Bits); 1222 Y = std::move(Y); 1223 EXPECT_EQ(128u, Y.getBitWidth()); 1224 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1225 const uint64_t *Raw = Y.getRawData(); 1226 EXPECT_EQ(2u, Y.getNumWords()); 1227 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1228 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1229 } 1230 #if defined(__clang__) 1231 #pragma clang diagnostic pop 1232 #pragma clang diagnostic pop 1233 #endif 1234 } 1235 1236 TEST(APIntTest, reverseBits) { 1237 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1238 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1239 1240 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1241 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1242 1243 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1244 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1245 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1246 1247 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1248 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1249 1250 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1251 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1252 1253 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1254 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1255 1256 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1257 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1258 1259 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1260 1261 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1262 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1263 1264 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1265 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1266 1267 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1268 63, 64, 65, 127, 128, 257, 1024 }) { 1269 for (unsigned I = 0; I < N; ++I) { 1270 APInt X = APInt::getOneBitSet(N, I); 1271 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1272 EXPECT_EQ(Y, X.reverseBits()); 1273 EXPECT_EQ(X, Y.reverseBits()); 1274 } 1275 } 1276 } 1277