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 // XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it. 51 #if defined(__llvm__) || !defined(__FreeBSD__) 52 53 TEST(APIntTest, i33_Count) { 54 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 55 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 56 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 57 EXPECT_EQ(33u, i33minus2.getActiveBits()); 58 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 59 EXPECT_EQ(32u, i33minus2.countPopulation()); 60 EXPECT_EQ(-2, i33minus2.getSExtValue()); 61 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 62 } 63 64 #endif 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 // Shifts. 162 EXPECT_EQ(zero, one << one); 163 EXPECT_EQ(one, one << zero); 164 EXPECT_EQ(zero, one.shl(1)); 165 EXPECT_EQ(one, one.shl(0)); 166 EXPECT_EQ(zero, one.lshr(1)); 167 EXPECT_EQ(zero, one.ashr(1)); 168 169 // Rotates. 170 EXPECT_EQ(one, one.rotl(0)); 171 EXPECT_EQ(one, one.rotl(1)); 172 EXPECT_EQ(one, one.rotr(0)); 173 EXPECT_EQ(one, one.rotr(1)); 174 175 // Multiplies. 176 EXPECT_EQ(neg_one, neg_one * one); 177 EXPECT_EQ(neg_one, one * neg_one); 178 EXPECT_EQ(one, neg_one * neg_one); 179 EXPECT_EQ(one, one * one); 180 181 // Divides. 182 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 183 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 184 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 185 EXPECT_EQ(one, one.sdiv(one)); 186 187 EXPECT_EQ(neg_one, one.udiv(neg_one)); 188 EXPECT_EQ(neg_one, neg_one.udiv(one)); 189 EXPECT_EQ(one, neg_one.udiv(neg_one)); 190 EXPECT_EQ(one, one.udiv(one)); 191 192 // Remainders. 193 EXPECT_EQ(zero, neg_one.srem(one)); 194 EXPECT_EQ(zero, neg_one.urem(one)); 195 EXPECT_EQ(zero, one.srem(neg_one)); 196 197 // sdivrem 198 { 199 APInt q(8, 0); 200 APInt r(8, 0); 201 APInt one(8, 1); 202 APInt two(8, 2); 203 APInt nine(8, 9); 204 APInt four(8, 4); 205 206 EXPECT_EQ(nine.srem(two), one); 207 EXPECT_EQ(nine.srem(-two), one); 208 EXPECT_EQ((-nine).srem(two), -one); 209 EXPECT_EQ((-nine).srem(-two), -one); 210 211 APInt::sdivrem(nine, two, q, r); 212 EXPECT_EQ(four, q); 213 EXPECT_EQ(one, r); 214 APInt::sdivrem(-nine, two, q, r); 215 EXPECT_EQ(-four, q); 216 EXPECT_EQ(-one, r); 217 APInt::sdivrem(nine, -two, q, r); 218 EXPECT_EQ(-four, q); 219 EXPECT_EQ(one, r); 220 APInt::sdivrem(-nine, -two, q, r); 221 EXPECT_EQ(four, q); 222 EXPECT_EQ(-one, r); 223 } 224 } 225 226 TEST(APIntTest, compare) { 227 std::array<APInt, 5> testVals{{ 228 APInt{16, 2}, 229 APInt{16, 1}, 230 APInt{16, 0}, 231 APInt{16, (uint64_t)-1, true}, 232 APInt{16, (uint64_t)-2, true}, 233 }}; 234 235 for (auto &arg1 : testVals) 236 for (auto &arg2 : testVals) { 237 auto uv1 = arg1.getZExtValue(); 238 auto uv2 = arg2.getZExtValue(); 239 auto sv1 = arg1.getSExtValue(); 240 auto sv2 = arg2.getSExtValue(); 241 242 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 243 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 244 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 245 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 246 247 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 248 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 249 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 250 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 251 252 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 253 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 254 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 255 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 256 257 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 258 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 259 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 260 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 261 } 262 } 263 264 TEST(APIntTest, compareWithRawIntegers) { 265 EXPECT_TRUE(!APInt(8, 1).uge(256)); 266 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 267 EXPECT_TRUE( APInt(8, 1).ule(256)); 268 EXPECT_TRUE( APInt(8, 1).ult(256)); 269 EXPECT_TRUE(!APInt(8, 1).sge(256)); 270 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 271 EXPECT_TRUE( APInt(8, 1).sle(256)); 272 EXPECT_TRUE( APInt(8, 1).slt(256)); 273 EXPECT_TRUE(!(APInt(8, 0) == 256)); 274 EXPECT_TRUE( APInt(8, 0) != 256); 275 EXPECT_TRUE(!(APInt(8, 1) == 256)); 276 EXPECT_TRUE( APInt(8, 1) != 256); 277 278 auto uint64max = UINT64_MAX; 279 auto int64max = INT64_MAX; 280 auto int64min = INT64_MIN; 281 282 auto u64 = APInt{128, uint64max}; 283 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 284 auto big = u64 + 1; 285 286 EXPECT_TRUE( u64.uge(uint64max)); 287 EXPECT_TRUE(!u64.ugt(uint64max)); 288 EXPECT_TRUE( u64.ule(uint64max)); 289 EXPECT_TRUE(!u64.ult(uint64max)); 290 EXPECT_TRUE( u64.sge(int64max)); 291 EXPECT_TRUE( u64.sgt(int64max)); 292 EXPECT_TRUE(!u64.sle(int64max)); 293 EXPECT_TRUE(!u64.slt(int64max)); 294 EXPECT_TRUE( u64.sge(int64min)); 295 EXPECT_TRUE( u64.sgt(int64min)); 296 EXPECT_TRUE(!u64.sle(int64min)); 297 EXPECT_TRUE(!u64.slt(int64min)); 298 299 EXPECT_TRUE(u64 == uint64max); 300 EXPECT_TRUE(u64 != int64max); 301 EXPECT_TRUE(u64 != int64min); 302 303 EXPECT_TRUE(!s64.uge(uint64max)); 304 EXPECT_TRUE(!s64.ugt(uint64max)); 305 EXPECT_TRUE( s64.ule(uint64max)); 306 EXPECT_TRUE( s64.ult(uint64max)); 307 EXPECT_TRUE( s64.sge(int64max)); 308 EXPECT_TRUE(!s64.sgt(int64max)); 309 EXPECT_TRUE( s64.sle(int64max)); 310 EXPECT_TRUE(!s64.slt(int64max)); 311 EXPECT_TRUE( s64.sge(int64min)); 312 EXPECT_TRUE( s64.sgt(int64min)); 313 EXPECT_TRUE(!s64.sle(int64min)); 314 EXPECT_TRUE(!s64.slt(int64min)); 315 316 EXPECT_TRUE(s64 != uint64max); 317 EXPECT_TRUE(s64 == int64max); 318 EXPECT_TRUE(s64 != int64min); 319 320 EXPECT_TRUE( big.uge(uint64max)); 321 EXPECT_TRUE( big.ugt(uint64max)); 322 EXPECT_TRUE(!big.ule(uint64max)); 323 EXPECT_TRUE(!big.ult(uint64max)); 324 EXPECT_TRUE( big.sge(int64max)); 325 EXPECT_TRUE( big.sgt(int64max)); 326 EXPECT_TRUE(!big.sle(int64max)); 327 EXPECT_TRUE(!big.slt(int64max)); 328 EXPECT_TRUE( big.sge(int64min)); 329 EXPECT_TRUE( big.sgt(int64min)); 330 EXPECT_TRUE(!big.sle(int64min)); 331 EXPECT_TRUE(!big.slt(int64min)); 332 333 EXPECT_TRUE(big != uint64max); 334 EXPECT_TRUE(big != int64max); 335 EXPECT_TRUE(big != int64min); 336 } 337 338 TEST(APIntTest, compareWithInt64Min) { 339 int64_t edge = INT64_MIN; 340 int64_t edgeP1 = edge + 1; 341 int64_t edgeM1 = INT64_MAX; 342 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 343 344 EXPECT_TRUE(!a.slt(edge)); 345 EXPECT_TRUE( a.sle(edge)); 346 EXPECT_TRUE(!a.sgt(edge)); 347 EXPECT_TRUE( a.sge(edge)); 348 EXPECT_TRUE( a.slt(edgeP1)); 349 EXPECT_TRUE( a.sle(edgeP1)); 350 EXPECT_TRUE(!a.sgt(edgeP1)); 351 EXPECT_TRUE(!a.sge(edgeP1)); 352 EXPECT_TRUE( a.slt(edgeM1)); 353 EXPECT_TRUE( a.sle(edgeM1)); 354 EXPECT_TRUE(!a.sgt(edgeM1)); 355 EXPECT_TRUE(!a.sge(edgeM1)); 356 } 357 358 TEST(APIntTest, compareWithHalfInt64Max) { 359 uint64_t edge = 0x4000000000000000; 360 uint64_t edgeP1 = edge + 1; 361 uint64_t edgeM1 = edge - 1; 362 auto a = APInt{64, edge}; 363 364 EXPECT_TRUE(!a.ult(edge)); 365 EXPECT_TRUE( a.ule(edge)); 366 EXPECT_TRUE(!a.ugt(edge)); 367 EXPECT_TRUE( a.uge(edge)); 368 EXPECT_TRUE( a.ult(edgeP1)); 369 EXPECT_TRUE( a.ule(edgeP1)); 370 EXPECT_TRUE(!a.ugt(edgeP1)); 371 EXPECT_TRUE(!a.uge(edgeP1)); 372 EXPECT_TRUE(!a.ult(edgeM1)); 373 EXPECT_TRUE(!a.ule(edgeM1)); 374 EXPECT_TRUE( a.ugt(edgeM1)); 375 EXPECT_TRUE( a.uge(edgeM1)); 376 377 EXPECT_TRUE(!a.slt(edge)); 378 EXPECT_TRUE( a.sle(edge)); 379 EXPECT_TRUE(!a.sgt(edge)); 380 EXPECT_TRUE( a.sge(edge)); 381 EXPECT_TRUE( a.slt(edgeP1)); 382 EXPECT_TRUE( a.sle(edgeP1)); 383 EXPECT_TRUE(!a.sgt(edgeP1)); 384 EXPECT_TRUE(!a.sge(edgeP1)); 385 EXPECT_TRUE(!a.slt(edgeM1)); 386 EXPECT_TRUE(!a.sle(edgeM1)); 387 EXPECT_TRUE( a.sgt(edgeM1)); 388 EXPECT_TRUE( a.sge(edgeM1)); 389 } 390 391 TEST(APIntTest, compareLargeIntegers) { 392 // Make sure all the combinations of signed comparisons work with big ints. 393 auto One = APInt{128, static_cast<uint64_t>(1), true}; 394 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 395 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 396 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 397 398 EXPECT_TRUE(!One.slt(One)); 399 EXPECT_TRUE(!Two.slt(One)); 400 EXPECT_TRUE(MinusOne.slt(One)); 401 EXPECT_TRUE(MinusTwo.slt(One)); 402 403 EXPECT_TRUE(One.slt(Two)); 404 EXPECT_TRUE(!Two.slt(Two)); 405 EXPECT_TRUE(MinusOne.slt(Two)); 406 EXPECT_TRUE(MinusTwo.slt(Two)); 407 408 EXPECT_TRUE(!One.slt(MinusOne)); 409 EXPECT_TRUE(!Two.slt(MinusOne)); 410 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 411 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 412 413 EXPECT_TRUE(!One.slt(MinusTwo)); 414 EXPECT_TRUE(!Two.slt(MinusTwo)); 415 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 416 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 417 } 418 419 TEST(APIntTest, rvalue_arithmetic) { 420 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 421 422 // Lamdba to return an APInt by value, but also provide the raw value of the 423 // allocated data. 424 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 425 APInt V(129, HexString, 16); 426 RawData = V.getRawData(); 427 return V; 428 }; 429 430 APInt One(129, "1", 16); 431 APInt Two(129, "2", 16); 432 APInt Three(129, "3", 16); 433 APInt MinusOne = -One; 434 435 const uint64_t *RawDataL = nullptr; 436 const uint64_t *RawDataR = nullptr; 437 438 { 439 // 1 + 1 = 2 440 APInt AddLL = One + One; 441 EXPECT_EQ(AddLL, Two); 442 443 APInt AddLR = One + getRValue("1", RawDataR); 444 EXPECT_EQ(AddLR, Two); 445 EXPECT_EQ(AddLR.getRawData(), RawDataR); 446 447 APInt AddRL = getRValue("1", RawDataL) + One; 448 EXPECT_EQ(AddRL, Two); 449 EXPECT_EQ(AddRL.getRawData(), RawDataL); 450 451 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 452 EXPECT_EQ(AddRR, Two); 453 EXPECT_EQ(AddRR.getRawData(), RawDataR); 454 455 // LValue's and constants 456 APInt AddLK = One + 1; 457 EXPECT_EQ(AddLK, Two); 458 459 APInt AddKL = 1 + One; 460 EXPECT_EQ(AddKL, Two); 461 462 // RValue's and constants 463 APInt AddRK = getRValue("1", RawDataL) + 1; 464 EXPECT_EQ(AddRK, Two); 465 EXPECT_EQ(AddRK.getRawData(), RawDataL); 466 467 APInt AddKR = 1 + getRValue("1", RawDataR); 468 EXPECT_EQ(AddKR, Two); 469 EXPECT_EQ(AddKR.getRawData(), RawDataR); 470 } 471 472 { 473 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 474 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 475 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 476 477 APInt AddLL = AllOnes + Two; 478 EXPECT_EQ(AddLL, HighOneLowOne); 479 480 APInt AddLR = AllOnes + getRValue("2", RawDataR); 481 EXPECT_EQ(AddLR, HighOneLowOne); 482 EXPECT_EQ(AddLR.getRawData(), RawDataR); 483 484 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 485 EXPECT_EQ(AddRL, HighOneLowOne); 486 EXPECT_EQ(AddRL.getRawData(), RawDataL); 487 488 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 489 getRValue("2", RawDataR); 490 EXPECT_EQ(AddRR, HighOneLowOne); 491 EXPECT_EQ(AddRR.getRawData(), RawDataR); 492 493 // LValue's and constants 494 APInt AddLK = AllOnes + 2; 495 EXPECT_EQ(AddLK, HighOneLowOne); 496 497 APInt AddKL = 2 + AllOnes; 498 EXPECT_EQ(AddKL, HighOneLowOne); 499 500 // RValue's and constants 501 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 502 EXPECT_EQ(AddRK, HighOneLowOne); 503 EXPECT_EQ(AddRK.getRawData(), RawDataL); 504 505 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 506 EXPECT_EQ(AddKR, HighOneLowOne); 507 EXPECT_EQ(AddKR.getRawData(), RawDataR); 508 } 509 510 { 511 // 2 - 1 = 1 512 APInt SubLL = Two - One; 513 EXPECT_EQ(SubLL, One); 514 515 APInt SubLR = Two - getRValue("1", RawDataR); 516 EXPECT_EQ(SubLR, One); 517 EXPECT_EQ(SubLR.getRawData(), RawDataR); 518 519 APInt SubRL = getRValue("2", RawDataL) - One; 520 EXPECT_EQ(SubRL, One); 521 EXPECT_EQ(SubRL.getRawData(), RawDataL); 522 523 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 524 EXPECT_EQ(SubRR, One); 525 EXPECT_EQ(SubRR.getRawData(), RawDataR); 526 527 // LValue's and constants 528 APInt SubLK = Two - 1; 529 EXPECT_EQ(SubLK, One); 530 531 APInt SubKL = 2 - One; 532 EXPECT_EQ(SubKL, One); 533 534 // RValue's and constants 535 APInt SubRK = getRValue("2", RawDataL) - 1; 536 EXPECT_EQ(SubRK, One); 537 EXPECT_EQ(SubRK.getRawData(), RawDataL); 538 539 APInt SubKR = 2 - getRValue("1", RawDataR); 540 EXPECT_EQ(SubKR, One); 541 EXPECT_EQ(SubKR.getRawData(), RawDataR); 542 } 543 544 { 545 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 546 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 547 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 548 549 APInt SubLL = HighOneLowOne - AllOnes; 550 EXPECT_EQ(SubLL, Two); 551 552 APInt SubLR = HighOneLowOne - 553 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 554 EXPECT_EQ(SubLR, Two); 555 EXPECT_EQ(SubLR.getRawData(), RawDataR); 556 557 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 558 AllOnes; 559 EXPECT_EQ(SubRL, Two); 560 EXPECT_EQ(SubRL.getRawData(), RawDataL); 561 562 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 563 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 564 EXPECT_EQ(SubRR, Two); 565 EXPECT_EQ(SubRR.getRawData(), RawDataR); 566 567 // LValue's and constants 568 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 569 APInt SubLK = HighOneLowOne - 2; 570 EXPECT_EQ(SubLK, AllOnes); 571 572 // 2 - (-1) = 3 573 APInt SubKL = 2 - MinusOne; 574 EXPECT_EQ(SubKL, Three); 575 576 // RValue's and constants 577 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 578 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 579 EXPECT_EQ(SubRK, AllOnes); 580 EXPECT_EQ(SubRK.getRawData(), RawDataL); 581 582 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 583 EXPECT_EQ(SubKR, Three); 584 EXPECT_EQ(SubKR.getRawData(), RawDataR); 585 } 586 } 587 588 589 // Tests different div/rem varaints using scheme (a * b + c) / a 590 void testDiv(APInt a, APInt b, APInt c) { 591 ASSERT_TRUE(a.uge(b)); // Must: a >= b 592 ASSERT_TRUE(a.ugt(c)); // Must: a > c 593 594 auto p = a * b + c; 595 596 auto q = p.udiv(a); 597 auto r = p.urem(a); 598 EXPECT_EQ(b, q); 599 EXPECT_EQ(c, r); 600 APInt::udivrem(p, a, q, r); 601 EXPECT_EQ(b, q); 602 EXPECT_EQ(c, r); 603 q = p.sdiv(a); 604 r = p.srem(a); 605 EXPECT_EQ(b, q); 606 EXPECT_EQ(c, r); 607 APInt::sdivrem(p, a, q, r); 608 EXPECT_EQ(b, q); 609 EXPECT_EQ(c, r); 610 611 if (b.ugt(c)) { // Test also symmetric case 612 q = p.udiv(b); 613 r = p.urem(b); 614 EXPECT_EQ(a, q); 615 EXPECT_EQ(c, r); 616 APInt::udivrem(p, b, q, r); 617 EXPECT_EQ(a, q); 618 EXPECT_EQ(c, r); 619 q = p.sdiv(b); 620 r = p.srem(b); 621 EXPECT_EQ(a, q); 622 EXPECT_EQ(c, r); 623 APInt::sdivrem(p, b, q, r); 624 EXPECT_EQ(a, q); 625 EXPECT_EQ(c, r); 626 } 627 } 628 629 TEST(APIntTest, divrem_big1) { 630 // Tests KnuthDiv rare step D6 631 testDiv({256, "1ffffffffffffffff", 16}, 632 {256, "1ffffffffffffffff", 16}, 633 {256, 0}); 634 } 635 636 TEST(APIntTest, divrem_big2) { 637 // Tests KnuthDiv rare step D6 638 testDiv({1024, "112233ceff" 639 "cecece000000ffffffffffffffffffff" 640 "ffffffffffffffffffffffffffffffff" 641 "ffffffffffffffffffffffffffffffff" 642 "ffffffffffffffffffffffffffffff33", 16}, 643 {1024, "111111ffffffffffffffff" 644 "ffffffffffffffffffffffffffffffff" 645 "fffffffffffffffffffffffffffffccf" 646 "ffffffffffffffffffffffffffffff00", 16}, 647 {1024, 7919}); 648 } 649 650 TEST(APIntTest, divrem_big3) { 651 // Tests KnuthDiv case without shift 652 testDiv({256, "80000001ffffffffffffffff", 16}, 653 {256, "ffffffffffffff0000000", 16}, 654 {256, 4219}); 655 } 656 657 TEST(APIntTest, divrem_big4) { 658 // Tests heap allocation in divide() enfoced by huge numbers 659 testDiv(APInt{4096, 5}.shl(2001), 660 APInt{4096, 1}.shl(2000), 661 APInt{4096, 4219*13}); 662 } 663 664 TEST(APIntTest, divrem_big5) { 665 // Tests one word divisor case of divide() 666 testDiv(APInt{1024, 19}.shl(811), 667 APInt{1024, 4356013}, // one word 668 APInt{1024, 1}); 669 } 670 671 TEST(APIntTest, divrem_big6) { 672 // Tests some rare "borrow" cases in D4 step 673 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 674 APInt{512, "10000000000000001000000000000001", 16}, 675 APInt{512, "10000000000000000000000000000000", 16}); 676 } 677 678 TEST(APIntTest, divrem_big7) { 679 // Yet another test for KnuthDiv rare step D6. 680 testDiv({224, "800000008000000200000005", 16}, 681 {224, "fffffffd", 16}, 682 {224, "80000000800000010000000f", 16}); 683 } 684 685 TEST(APIntTest, fromString) { 686 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 687 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 688 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 689 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 690 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 691 692 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 693 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 694 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 695 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 696 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 697 698 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 699 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 700 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 701 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 702 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 703 704 705 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 706 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 707 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 708 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 709 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 710 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 711 712 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 713 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 714 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 715 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 716 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 717 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 718 719 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 720 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 721 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 722 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 723 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 724 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 725 726 727 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 728 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 729 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 730 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 731 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 732 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 733 734 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 735 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 736 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 737 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 738 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 739 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 740 741 742 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 743 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 744 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 745 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 746 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 747 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 748 749 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 750 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 751 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 752 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 753 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 754 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 755 756 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 757 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 758 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 759 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 760 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 761 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 762 763 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 764 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 765 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 766 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 767 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 768 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 769 } 770 771 TEST(APIntTest, FromArray) { 772 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 773 } 774 775 TEST(APIntTest, StringBitsNeeded2) { 776 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 777 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 778 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 779 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 780 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 781 782 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 783 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 784 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 785 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 786 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 787 788 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 789 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 790 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 791 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 792 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 793 } 794 795 TEST(APIntTest, StringBitsNeeded8) { 796 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 797 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 798 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 799 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 800 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 801 802 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 803 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 804 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 805 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 806 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 807 808 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 809 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 810 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 811 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 812 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 813 } 814 815 TEST(APIntTest, StringBitsNeeded10) { 816 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 817 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 818 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 819 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 820 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 821 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 822 823 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 824 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 825 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 826 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 827 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 828 829 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 830 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 831 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 832 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 833 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 834 } 835 836 TEST(APIntTest, StringBitsNeeded16) { 837 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 838 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 839 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 840 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 841 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 842 843 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 844 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 845 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 846 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 847 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 848 849 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 850 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 851 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 852 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 853 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 854 } 855 856 TEST(APIntTest, toString) { 857 SmallString<16> S; 858 bool isSigned; 859 860 APInt(8, 0).toString(S, 2, true, true); 861 EXPECT_EQ(S.str().str(), "0b0"); 862 S.clear(); 863 APInt(8, 0).toString(S, 8, true, true); 864 EXPECT_EQ(S.str().str(), "00"); 865 S.clear(); 866 APInt(8, 0).toString(S, 10, true, true); 867 EXPECT_EQ(S.str().str(), "0"); 868 S.clear(); 869 APInt(8, 0).toString(S, 16, true, true); 870 EXPECT_EQ(S.str().str(), "0x0"); 871 S.clear(); 872 APInt(8, 0).toString(S, 36, true, false); 873 EXPECT_EQ(S.str().str(), "0"); 874 S.clear(); 875 876 isSigned = false; 877 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 878 EXPECT_EQ(S.str().str(), "0b11111111"); 879 S.clear(); 880 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 881 EXPECT_EQ(S.str().str(), "0377"); 882 S.clear(); 883 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 884 EXPECT_EQ(S.str().str(), "255"); 885 S.clear(); 886 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 887 EXPECT_EQ(S.str().str(), "0xFF"); 888 S.clear(); 889 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 890 EXPECT_EQ(S.str().str(), "73"); 891 S.clear(); 892 893 isSigned = true; 894 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 895 EXPECT_EQ(S.str().str(), "-0b1"); 896 S.clear(); 897 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 898 EXPECT_EQ(S.str().str(), "-01"); 899 S.clear(); 900 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 901 EXPECT_EQ(S.str().str(), "-1"); 902 S.clear(); 903 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 904 EXPECT_EQ(S.str().str(), "-0x1"); 905 S.clear(); 906 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 907 EXPECT_EQ(S.str().str(), "-1"); 908 S.clear(); 909 } 910 911 TEST(APIntTest, Log2) { 912 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 913 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 914 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 915 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 916 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 917 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 918 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 919 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 920 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 921 } 922 923 TEST(APIntTest, magic) { 924 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 925 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 926 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 927 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 928 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 929 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 930 } 931 932 TEST(APIntTest, magicu) { 933 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 934 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 935 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 936 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 937 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 938 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 939 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 940 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 941 } 942 943 #ifdef GTEST_HAS_DEATH_TEST 944 #ifndef NDEBUG 945 TEST(APIntTest, StringDeath) { 946 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 947 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 948 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 949 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 950 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 951 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 952 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 953 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 954 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 955 } 956 #endif 957 #endif 958 959 TEST(APIntTest, mul_clear) { 960 APInt ValA(65, -1ULL); 961 APInt ValB(65, 4); 962 APInt ValC(65, 0); 963 ValC = ValA * ValB; 964 ValA *= ValB; 965 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 966 } 967 968 TEST(APIntTest, Rotate) { 969 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 970 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 971 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 972 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 973 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 974 975 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 976 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 977 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 978 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 979 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 980 981 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 982 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 983 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 984 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 985 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 986 987 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 988 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 989 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 990 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 991 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 992 993 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16); 994 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16); 995 EXPECT_EQ(Rot, Big.rotr(144)); 996 } 997 998 TEST(APIntTest, Splat) { 999 APInt ValA(8, 0x01); 1000 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1001 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1002 1003 APInt ValB(3, 5); 1004 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1005 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1006 } 1007 1008 TEST(APIntTest, tcDecrement) { 1009 // Test single word decrement. 1010 1011 // No out borrow. 1012 { 1013 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 1014 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1015 EXPECT_EQ(carry, integerPart(0)); 1016 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 1017 } 1018 1019 // With out borrow. 1020 { 1021 integerPart singleWord = 0; 1022 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1023 EXPECT_EQ(carry, integerPart(1)); 1024 EXPECT_EQ(singleWord, ~integerPart(0)); 1025 } 1026 1027 // Test multiword decrement. 1028 1029 // No across word borrow, no out borrow. 1030 { 1031 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 1032 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 1033 APInt::tcDecrement(test, 4); 1034 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1035 } 1036 1037 // 1 across word borrow, no out borrow. 1038 { 1039 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 1040 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 1041 integerPart carry = APInt::tcDecrement(test, 4); 1042 EXPECT_EQ(carry, integerPart(0)); 1043 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1044 } 1045 1046 // 2 across word borrow, no out borrow. 1047 { 1048 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 1049 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 1050 integerPart carry = APInt::tcDecrement(test, 4); 1051 EXPECT_EQ(carry, integerPart(0)); 1052 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1053 } 1054 1055 // 3 across word borrow, no out borrow. 1056 { 1057 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 1058 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 1059 integerPart carry = APInt::tcDecrement(test, 4); 1060 EXPECT_EQ(carry, integerPart(0)); 1061 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1062 } 1063 1064 // 3 across word borrow, with out borrow. 1065 { 1066 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 1067 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 1068 integerPart carry = APInt::tcDecrement(test, 4); 1069 EXPECT_EQ(carry, integerPart(1)); 1070 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1071 } 1072 } 1073 1074 TEST(APIntTest, arrayAccess) { 1075 // Single word check. 1076 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1077 APInt A1(64, E1); 1078 for (unsigned i = 0, e = 64; i < e; ++i) { 1079 EXPECT_EQ(bool(E1 & (1ULL << i)), 1080 A1[i]); 1081 } 1082 1083 // Multiword check. 1084 integerPart E2[4] = { 1085 0xEB6EB136591CBA21ULL, 1086 0x7B9358BD6A33F10AULL, 1087 0x7E7FFA5EADD8846ULL, 1088 0x305F341CA00B613DULL 1089 }; 1090 APInt A2(integerPartWidth*4, E2); 1091 for (unsigned i = 0; i < 4; ++i) { 1092 for (unsigned j = 0; j < integerPartWidth; ++j) { 1093 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1094 A2[i*integerPartWidth + j]); 1095 } 1096 } 1097 } 1098 1099 TEST(APIntTest, LargeAPIntConstruction) { 1100 // Check that we can properly construct very large APInt. It is very 1101 // unlikely that people will ever do this, but it is a legal input, 1102 // so we should not crash on it. 1103 APInt A9(UINT32_MAX, 0); 1104 EXPECT_FALSE(A9.getBoolValue()); 1105 } 1106 1107 TEST(APIntTest, nearestLogBase2) { 1108 // Single word check. 1109 1110 // Test round up. 1111 uint64_t I1 = 0x1800001; 1112 APInt A1(64, I1); 1113 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1114 1115 // Test round down. 1116 uint64_t I2 = 0x1000011; 1117 APInt A2(64, I2); 1118 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1119 1120 // Test ties round up. 1121 uint64_t I3 = 0x1800000; 1122 APInt A3(64, I3); 1123 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1124 1125 // Multiple word check. 1126 1127 // Test round up. 1128 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 1129 APInt A4(integerPartWidth*4, I4); 1130 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1131 1132 // Test round down. 1133 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 1134 APInt A5(integerPartWidth*4, I5); 1135 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1136 1137 // Test ties round up. 1138 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1139 APInt A6(integerPartWidth*4, I6); 1140 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1141 1142 // Test BitWidth == 1 special cases. 1143 APInt A7(1, 1); 1144 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1145 APInt A8(1, 0); 1146 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1147 1148 // Test the zero case when we have a bit width large enough such 1149 // that the bit width is larger than UINT32_MAX-1. 1150 APInt A9(UINT32_MAX, 0); 1151 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1152 } 1153 1154 TEST(APIntTest, IsSplat) { 1155 APInt A(32, 0x01010101); 1156 EXPECT_FALSE(A.isSplat(1)); 1157 EXPECT_FALSE(A.isSplat(2)); 1158 EXPECT_FALSE(A.isSplat(4)); 1159 EXPECT_TRUE(A.isSplat(8)); 1160 EXPECT_TRUE(A.isSplat(16)); 1161 EXPECT_TRUE(A.isSplat(32)); 1162 1163 APInt B(24, 0xAAAAAA); 1164 EXPECT_FALSE(B.isSplat(1)); 1165 EXPECT_TRUE(B.isSplat(2)); 1166 EXPECT_TRUE(B.isSplat(4)); 1167 EXPECT_TRUE(B.isSplat(8)); 1168 EXPECT_TRUE(B.isSplat(24)); 1169 1170 APInt C(24, 0xABAAAB); 1171 EXPECT_FALSE(C.isSplat(1)); 1172 EXPECT_FALSE(C.isSplat(2)); 1173 EXPECT_FALSE(C.isSplat(4)); 1174 EXPECT_FALSE(C.isSplat(8)); 1175 EXPECT_TRUE(C.isSplat(24)); 1176 1177 APInt D(32, 0xABBAABBA); 1178 EXPECT_FALSE(D.isSplat(1)); 1179 EXPECT_FALSE(D.isSplat(2)); 1180 EXPECT_FALSE(D.isSplat(4)); 1181 EXPECT_FALSE(D.isSplat(8)); 1182 EXPECT_TRUE(D.isSplat(16)); 1183 EXPECT_TRUE(D.isSplat(32)); 1184 1185 APInt E(32, 0); 1186 EXPECT_TRUE(E.isSplat(1)); 1187 EXPECT_TRUE(E.isSplat(2)); 1188 EXPECT_TRUE(E.isSplat(4)); 1189 EXPECT_TRUE(E.isSplat(8)); 1190 EXPECT_TRUE(E.isSplat(16)); 1191 EXPECT_TRUE(E.isSplat(32)); 1192 } 1193 1194 TEST(APIntTest, isMask) { 1195 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0x01010101))); 1196 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xf0000000))); 1197 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xffff0000))); 1198 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xff << 1))); 1199 1200 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1201 EXPECT_FALSE(APIntOps::isMask(APInt(N, 0))); 1202 1203 APInt One(N, 1); 1204 for (int I = 1; I <= N; ++I) { 1205 APInt MaskVal = One.shl(I) - 1; 1206 EXPECT_TRUE(APIntOps::isMask(MaskVal)); 1207 } 1208 } 1209 } 1210 1211 #if defined(__clang__) 1212 // Disable the pragma warning from versions of Clang without -Wself-move 1213 #pragma clang diagnostic push 1214 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1215 // Disable the warning that triggers on exactly what is being tested. 1216 #pragma clang diagnostic push 1217 #pragma clang diagnostic ignored "-Wself-move" 1218 #endif 1219 TEST(APIntTest, SelfMoveAssignment) { 1220 APInt X(32, 0xdeadbeef); 1221 X = std::move(X); 1222 EXPECT_EQ(32u, X.getBitWidth()); 1223 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1224 1225 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1226 APInt Y(128, Bits); 1227 Y = std::move(Y); 1228 EXPECT_EQ(128u, Y.getBitWidth()); 1229 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1230 const uint64_t *Raw = Y.getRawData(); 1231 EXPECT_EQ(2u, Y.getNumWords()); 1232 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1233 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1234 } 1235 #if defined(__clang__) 1236 #pragma clang diagnostic pop 1237 #pragma clang diagnostic pop 1238 #endif 1239 } 1240 1241 TEST(APIntTest, reverseBits) { 1242 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1243 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1244 1245 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1246 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1247 1248 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1249 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1250 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1251 1252 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1253 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1254 1255 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1256 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1257 1258 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1259 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1260 1261 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1262 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1263 1264 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1265 1266 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1267 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1268 1269 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1270 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1271 1272 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1273 63, 64, 65, 127, 128, 257, 1024 }) { 1274 for (unsigned I = 0; I < N; ++I) { 1275 APInt X = APInt::getOneBitSet(N, I); 1276 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1277 EXPECT_EQ(Y, X.reverseBits()); 1278 EXPECT_EQ(X, Y.reverseBits()); 1279 } 1280 } 1281 } 1282