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, rvalue_arithmetic) { 450 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 451 452 // Lamdba to return an APInt by value, but also provide the raw value of the 453 // allocated data. 454 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 455 APInt V(129, HexString, 16); 456 RawData = V.getRawData(); 457 return V; 458 }; 459 460 APInt One(129, "1", 16); 461 APInt Two(129, "2", 16); 462 APInt Three(129, "3", 16); 463 APInt MinusOne = -One; 464 465 const uint64_t *RawDataL = nullptr; 466 const uint64_t *RawDataR = nullptr; 467 468 { 469 // 1 + 1 = 2 470 APInt AddLL = One + One; 471 EXPECT_EQ(AddLL, Two); 472 473 APInt AddLR = One + getRValue("1", RawDataR); 474 EXPECT_EQ(AddLR, Two); 475 EXPECT_EQ(AddLR.getRawData(), RawDataR); 476 477 APInt AddRL = getRValue("1", RawDataL) + One; 478 EXPECT_EQ(AddRL, Two); 479 EXPECT_EQ(AddRL.getRawData(), RawDataL); 480 481 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 482 EXPECT_EQ(AddRR, Two); 483 EXPECT_EQ(AddRR.getRawData(), RawDataR); 484 485 // LValue's and constants 486 APInt AddLK = One + 1; 487 EXPECT_EQ(AddLK, Two); 488 489 APInt AddKL = 1 + One; 490 EXPECT_EQ(AddKL, Two); 491 492 // RValue's and constants 493 APInt AddRK = getRValue("1", RawDataL) + 1; 494 EXPECT_EQ(AddRK, Two); 495 EXPECT_EQ(AddRK.getRawData(), RawDataL); 496 497 APInt AddKR = 1 + getRValue("1", RawDataR); 498 EXPECT_EQ(AddKR, Two); 499 EXPECT_EQ(AddKR.getRawData(), RawDataR); 500 } 501 502 { 503 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 504 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 505 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 506 507 APInt AddLL = AllOnes + Two; 508 EXPECT_EQ(AddLL, HighOneLowOne); 509 510 APInt AddLR = AllOnes + getRValue("2", RawDataR); 511 EXPECT_EQ(AddLR, HighOneLowOne); 512 EXPECT_EQ(AddLR.getRawData(), RawDataR); 513 514 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 515 EXPECT_EQ(AddRL, HighOneLowOne); 516 EXPECT_EQ(AddRL.getRawData(), RawDataL); 517 518 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 519 getRValue("2", RawDataR); 520 EXPECT_EQ(AddRR, HighOneLowOne); 521 EXPECT_EQ(AddRR.getRawData(), RawDataR); 522 523 // LValue's and constants 524 APInt AddLK = AllOnes + 2; 525 EXPECT_EQ(AddLK, HighOneLowOne); 526 527 APInt AddKL = 2 + AllOnes; 528 EXPECT_EQ(AddKL, HighOneLowOne); 529 530 // RValue's and constants 531 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 532 EXPECT_EQ(AddRK, HighOneLowOne); 533 EXPECT_EQ(AddRK.getRawData(), RawDataL); 534 535 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 536 EXPECT_EQ(AddKR, HighOneLowOne); 537 EXPECT_EQ(AddKR.getRawData(), RawDataR); 538 } 539 540 { 541 // 2 - 1 = 1 542 APInt SubLL = Two - One; 543 EXPECT_EQ(SubLL, One); 544 545 APInt SubLR = Two - getRValue("1", RawDataR); 546 EXPECT_EQ(SubLR, One); 547 EXPECT_EQ(SubLR.getRawData(), RawDataR); 548 549 APInt SubRL = getRValue("2", RawDataL) - One; 550 EXPECT_EQ(SubRL, One); 551 EXPECT_EQ(SubRL.getRawData(), RawDataL); 552 553 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 554 EXPECT_EQ(SubRR, One); 555 EXPECT_EQ(SubRR.getRawData(), RawDataR); 556 557 // LValue's and constants 558 APInt SubLK = Two - 1; 559 EXPECT_EQ(SubLK, One); 560 561 APInt SubKL = 2 - One; 562 EXPECT_EQ(SubKL, One); 563 564 // RValue's and constants 565 APInt SubRK = getRValue("2", RawDataL) - 1; 566 EXPECT_EQ(SubRK, One); 567 EXPECT_EQ(SubRK.getRawData(), RawDataL); 568 569 APInt SubKR = 2 - getRValue("1", RawDataR); 570 EXPECT_EQ(SubKR, One); 571 EXPECT_EQ(SubKR.getRawData(), RawDataR); 572 } 573 574 { 575 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 576 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 577 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 578 579 APInt SubLL = HighOneLowOne - AllOnes; 580 EXPECT_EQ(SubLL, Two); 581 582 APInt SubLR = HighOneLowOne - 583 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 584 EXPECT_EQ(SubLR, Two); 585 EXPECT_EQ(SubLR.getRawData(), RawDataR); 586 587 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 588 AllOnes; 589 EXPECT_EQ(SubRL, Two); 590 EXPECT_EQ(SubRL.getRawData(), RawDataL); 591 592 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 593 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 594 EXPECT_EQ(SubRR, Two); 595 EXPECT_EQ(SubRR.getRawData(), RawDataR); 596 597 // LValue's and constants 598 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 599 APInt SubLK = HighOneLowOne - 2; 600 EXPECT_EQ(SubLK, AllOnes); 601 602 // 2 - (-1) = 3 603 APInt SubKL = 2 - MinusOne; 604 EXPECT_EQ(SubKL, Three); 605 606 // RValue's and constants 607 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 608 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 609 EXPECT_EQ(SubRK, AllOnes); 610 EXPECT_EQ(SubRK.getRawData(), RawDataL); 611 612 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 613 EXPECT_EQ(SubKR, Three); 614 EXPECT_EQ(SubKR.getRawData(), RawDataR); 615 } 616 } 617 618 619 // Tests different div/rem varaints using scheme (a * b + c) / a 620 void testDiv(APInt a, APInt b, APInt c) { 621 ASSERT_TRUE(a.uge(b)); // Must: a >= b 622 ASSERT_TRUE(a.ugt(c)); // Must: a > c 623 624 auto p = a * b + c; 625 626 auto q = p.udiv(a); 627 auto r = p.urem(a); 628 EXPECT_EQ(b, q); 629 EXPECT_EQ(c, r); 630 APInt::udivrem(p, a, q, r); 631 EXPECT_EQ(b, q); 632 EXPECT_EQ(c, r); 633 q = p.sdiv(a); 634 r = p.srem(a); 635 EXPECT_EQ(b, q); 636 EXPECT_EQ(c, r); 637 APInt::sdivrem(p, a, q, r); 638 EXPECT_EQ(b, q); 639 EXPECT_EQ(c, r); 640 641 if (b.ugt(c)) { // Test also symmetric case 642 q = p.udiv(b); 643 r = p.urem(b); 644 EXPECT_EQ(a, q); 645 EXPECT_EQ(c, r); 646 APInt::udivrem(p, b, q, r); 647 EXPECT_EQ(a, q); 648 EXPECT_EQ(c, r); 649 q = p.sdiv(b); 650 r = p.srem(b); 651 EXPECT_EQ(a, q); 652 EXPECT_EQ(c, r); 653 APInt::sdivrem(p, b, q, r); 654 EXPECT_EQ(a, q); 655 EXPECT_EQ(c, r); 656 } 657 } 658 659 TEST(APIntTest, divrem_big1) { 660 // Tests KnuthDiv rare step D6 661 testDiv({256, "1ffffffffffffffff", 16}, 662 {256, "1ffffffffffffffff", 16}, 663 {256, 0}); 664 } 665 666 TEST(APIntTest, divrem_big2) { 667 // Tests KnuthDiv rare step D6 668 testDiv({1024, "112233ceff" 669 "cecece000000ffffffffffffffffffff" 670 "ffffffffffffffffffffffffffffffff" 671 "ffffffffffffffffffffffffffffffff" 672 "ffffffffffffffffffffffffffffff33", 16}, 673 {1024, "111111ffffffffffffffff" 674 "ffffffffffffffffffffffffffffffff" 675 "fffffffffffffffffffffffffffffccf" 676 "ffffffffffffffffffffffffffffff00", 16}, 677 {1024, 7919}); 678 } 679 680 TEST(APIntTest, divrem_big3) { 681 // Tests KnuthDiv case without shift 682 testDiv({256, "80000001ffffffffffffffff", 16}, 683 {256, "ffffffffffffff0000000", 16}, 684 {256, 4219}); 685 } 686 687 TEST(APIntTest, divrem_big4) { 688 // Tests heap allocation in divide() enfoced by huge numbers 689 testDiv(APInt{4096, 5}.shl(2001), 690 APInt{4096, 1}.shl(2000), 691 APInt{4096, 4219*13}); 692 } 693 694 TEST(APIntTest, divrem_big5) { 695 // Tests one word divisor case of divide() 696 testDiv(APInt{1024, 19}.shl(811), 697 APInt{1024, 4356013}, // one word 698 APInt{1024, 1}); 699 } 700 701 TEST(APIntTest, divrem_big6) { 702 // Tests some rare "borrow" cases in D4 step 703 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 704 APInt{512, "10000000000000001000000000000001", 16}, 705 APInt{512, "10000000000000000000000000000000", 16}); 706 } 707 708 TEST(APIntTest, divrem_big7) { 709 // Yet another test for KnuthDiv rare step D6. 710 testDiv({224, "800000008000000200000005", 16}, 711 {224, "fffffffd", 16}, 712 {224, "80000000800000010000000f", 16}); 713 } 714 715 TEST(APIntTest, fromString) { 716 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 717 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 718 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 719 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 720 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 721 722 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 723 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 724 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 725 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 726 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 727 728 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 729 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 730 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 731 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 732 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 733 734 735 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 736 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 737 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 738 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 739 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 740 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 741 742 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 743 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 744 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 745 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 746 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 747 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 748 749 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 750 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 751 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 752 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 753 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 754 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 755 756 757 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 758 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 759 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 760 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 761 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 762 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 763 764 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 765 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 766 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 767 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 768 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 769 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 770 771 772 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 773 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 774 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 775 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 776 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 777 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 778 779 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 780 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 781 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 782 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 783 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 784 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 785 786 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 787 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 788 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 789 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 790 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 791 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 792 793 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 794 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 795 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 796 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 797 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 798 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 799 } 800 801 TEST(APIntTest, FromArray) { 802 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 803 } 804 805 TEST(APIntTest, StringBitsNeeded2) { 806 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 807 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 808 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 809 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 810 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 811 812 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 813 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 814 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 815 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 816 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 817 818 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 819 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 820 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 821 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 822 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 823 } 824 825 TEST(APIntTest, StringBitsNeeded8) { 826 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 827 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 828 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 829 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 830 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 831 832 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 833 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 834 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 835 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 836 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 837 838 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 839 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 840 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 841 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 842 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 843 } 844 845 TEST(APIntTest, StringBitsNeeded10) { 846 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 847 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 848 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 849 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 850 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 851 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 852 853 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 854 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 855 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 856 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 857 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 858 859 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 860 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 861 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 862 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 863 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 864 } 865 866 TEST(APIntTest, StringBitsNeeded16) { 867 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 868 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 869 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 870 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 871 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 872 873 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 874 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 875 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 876 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 877 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 878 879 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 880 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 881 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 882 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 883 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 884 } 885 886 TEST(APIntTest, toString) { 887 SmallString<16> S; 888 bool isSigned; 889 890 APInt(8, 0).toString(S, 2, true, true); 891 EXPECT_EQ(S.str().str(), "0b0"); 892 S.clear(); 893 APInt(8, 0).toString(S, 8, true, true); 894 EXPECT_EQ(S.str().str(), "00"); 895 S.clear(); 896 APInt(8, 0).toString(S, 10, true, true); 897 EXPECT_EQ(S.str().str(), "0"); 898 S.clear(); 899 APInt(8, 0).toString(S, 16, true, true); 900 EXPECT_EQ(S.str().str(), "0x0"); 901 S.clear(); 902 APInt(8, 0).toString(S, 36, true, false); 903 EXPECT_EQ(S.str().str(), "0"); 904 S.clear(); 905 906 isSigned = false; 907 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 908 EXPECT_EQ(S.str().str(), "0b11111111"); 909 S.clear(); 910 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 911 EXPECT_EQ(S.str().str(), "0377"); 912 S.clear(); 913 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 914 EXPECT_EQ(S.str().str(), "255"); 915 S.clear(); 916 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 917 EXPECT_EQ(S.str().str(), "0xFF"); 918 S.clear(); 919 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 920 EXPECT_EQ(S.str().str(), "73"); 921 S.clear(); 922 923 isSigned = true; 924 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 925 EXPECT_EQ(S.str().str(), "-0b1"); 926 S.clear(); 927 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 928 EXPECT_EQ(S.str().str(), "-01"); 929 S.clear(); 930 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 931 EXPECT_EQ(S.str().str(), "-1"); 932 S.clear(); 933 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 934 EXPECT_EQ(S.str().str(), "-0x1"); 935 S.clear(); 936 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 937 EXPECT_EQ(S.str().str(), "-1"); 938 S.clear(); 939 } 940 941 TEST(APIntTest, Log2) { 942 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 943 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 944 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 945 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 946 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 947 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 948 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 949 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 950 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 951 } 952 953 TEST(APIntTest, magic) { 954 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 955 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 956 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 957 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 958 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 959 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 960 } 961 962 TEST(APIntTest, magicu) { 963 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 964 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 965 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 966 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 967 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 968 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 969 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 970 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 971 } 972 973 #ifdef GTEST_HAS_DEATH_TEST 974 #ifndef NDEBUG 975 TEST(APIntTest, StringDeath) { 976 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 977 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 978 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 979 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 980 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 981 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 982 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 983 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 984 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 985 } 986 #endif 987 #endif 988 989 TEST(APIntTest, mul_clear) { 990 APInt ValA(65, -1ULL); 991 APInt ValB(65, 4); 992 APInt ValC(65, 0); 993 ValC = ValA * ValB; 994 ValA *= ValB; 995 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 996 } 997 998 TEST(APIntTest, Rotate) { 999 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1000 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1001 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1002 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1003 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1004 1005 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1006 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1007 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1008 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1009 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1010 1011 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1012 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1013 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1014 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1015 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1016 1017 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1018 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1019 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1020 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1021 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1022 1023 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16); 1024 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16); 1025 EXPECT_EQ(Rot, Big.rotr(144)); 1026 } 1027 1028 TEST(APIntTest, Splat) { 1029 APInt ValA(8, 0x01); 1030 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1031 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1032 1033 APInt ValB(3, 5); 1034 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1035 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1036 } 1037 1038 TEST(APIntTest, tcDecrement) { 1039 // Test single word decrement. 1040 1041 // No out borrow. 1042 { 1043 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 1044 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1045 EXPECT_EQ(carry, integerPart(0)); 1046 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 1047 } 1048 1049 // With out borrow. 1050 { 1051 integerPart singleWord = 0; 1052 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1053 EXPECT_EQ(carry, integerPart(1)); 1054 EXPECT_EQ(singleWord, ~integerPart(0)); 1055 } 1056 1057 // Test multiword decrement. 1058 1059 // No across word borrow, no out borrow. 1060 { 1061 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 1062 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 1063 APInt::tcDecrement(test, 4); 1064 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1065 } 1066 1067 // 1 across word borrow, no out borrow. 1068 { 1069 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 1070 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 1071 integerPart carry = APInt::tcDecrement(test, 4); 1072 EXPECT_EQ(carry, integerPart(0)); 1073 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1074 } 1075 1076 // 2 across word borrow, no out borrow. 1077 { 1078 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 1079 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 1080 integerPart carry = APInt::tcDecrement(test, 4); 1081 EXPECT_EQ(carry, integerPart(0)); 1082 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1083 } 1084 1085 // 3 across word borrow, no out borrow. 1086 { 1087 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 1088 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 1089 integerPart carry = APInt::tcDecrement(test, 4); 1090 EXPECT_EQ(carry, integerPart(0)); 1091 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1092 } 1093 1094 // 3 across word borrow, with out borrow. 1095 { 1096 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 1097 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 1098 integerPart carry = APInt::tcDecrement(test, 4); 1099 EXPECT_EQ(carry, integerPart(1)); 1100 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1101 } 1102 } 1103 1104 TEST(APIntTest, arrayAccess) { 1105 // Single word check. 1106 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1107 APInt A1(64, E1); 1108 for (unsigned i = 0, e = 64; i < e; ++i) { 1109 EXPECT_EQ(bool(E1 & (1ULL << i)), 1110 A1[i]); 1111 } 1112 1113 // Multiword check. 1114 integerPart E2[4] = { 1115 0xEB6EB136591CBA21ULL, 1116 0x7B9358BD6A33F10AULL, 1117 0x7E7FFA5EADD8846ULL, 1118 0x305F341CA00B613DULL 1119 }; 1120 APInt A2(integerPartWidth*4, E2); 1121 for (unsigned i = 0; i < 4; ++i) { 1122 for (unsigned j = 0; j < integerPartWidth; ++j) { 1123 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1124 A2[i*integerPartWidth + j]); 1125 } 1126 } 1127 } 1128 1129 TEST(APIntTest, LargeAPIntConstruction) { 1130 // Check that we can properly construct very large APInt. It is very 1131 // unlikely that people will ever do this, but it is a legal input, 1132 // so we should not crash on it. 1133 APInt A9(UINT32_MAX, 0); 1134 EXPECT_FALSE(A9.getBoolValue()); 1135 } 1136 1137 TEST(APIntTest, nearestLogBase2) { 1138 // Single word check. 1139 1140 // Test round up. 1141 uint64_t I1 = 0x1800001; 1142 APInt A1(64, I1); 1143 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1144 1145 // Test round down. 1146 uint64_t I2 = 0x1000011; 1147 APInt A2(64, I2); 1148 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1149 1150 // Test ties round up. 1151 uint64_t I3 = 0x1800000; 1152 APInt A3(64, I3); 1153 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1154 1155 // Multiple word check. 1156 1157 // Test round up. 1158 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 1159 APInt A4(integerPartWidth*4, I4); 1160 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1161 1162 // Test round down. 1163 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 1164 APInt A5(integerPartWidth*4, I5); 1165 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1166 1167 // Test ties round up. 1168 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1169 APInt A6(integerPartWidth*4, I6); 1170 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1171 1172 // Test BitWidth == 1 special cases. 1173 APInt A7(1, 1); 1174 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1175 APInt A8(1, 0); 1176 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1177 1178 // Test the zero case when we have a bit width large enough such 1179 // that the bit width is larger than UINT32_MAX-1. 1180 APInt A9(UINT32_MAX, 0); 1181 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1182 } 1183 1184 TEST(APIntTest, IsSplat) { 1185 APInt A(32, 0x01010101); 1186 EXPECT_FALSE(A.isSplat(1)); 1187 EXPECT_FALSE(A.isSplat(2)); 1188 EXPECT_FALSE(A.isSplat(4)); 1189 EXPECT_TRUE(A.isSplat(8)); 1190 EXPECT_TRUE(A.isSplat(16)); 1191 EXPECT_TRUE(A.isSplat(32)); 1192 1193 APInt B(24, 0xAAAAAA); 1194 EXPECT_FALSE(B.isSplat(1)); 1195 EXPECT_TRUE(B.isSplat(2)); 1196 EXPECT_TRUE(B.isSplat(4)); 1197 EXPECT_TRUE(B.isSplat(8)); 1198 EXPECT_TRUE(B.isSplat(24)); 1199 1200 APInt C(24, 0xABAAAB); 1201 EXPECT_FALSE(C.isSplat(1)); 1202 EXPECT_FALSE(C.isSplat(2)); 1203 EXPECT_FALSE(C.isSplat(4)); 1204 EXPECT_FALSE(C.isSplat(8)); 1205 EXPECT_TRUE(C.isSplat(24)); 1206 1207 APInt D(32, 0xABBAABBA); 1208 EXPECT_FALSE(D.isSplat(1)); 1209 EXPECT_FALSE(D.isSplat(2)); 1210 EXPECT_FALSE(D.isSplat(4)); 1211 EXPECT_FALSE(D.isSplat(8)); 1212 EXPECT_TRUE(D.isSplat(16)); 1213 EXPECT_TRUE(D.isSplat(32)); 1214 1215 APInt E(32, 0); 1216 EXPECT_TRUE(E.isSplat(1)); 1217 EXPECT_TRUE(E.isSplat(2)); 1218 EXPECT_TRUE(E.isSplat(4)); 1219 EXPECT_TRUE(E.isSplat(8)); 1220 EXPECT_TRUE(E.isSplat(16)); 1221 EXPECT_TRUE(E.isSplat(32)); 1222 } 1223 1224 TEST(APIntTest, isMask) { 1225 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0x01010101))); 1226 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xf0000000))); 1227 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xffff0000))); 1228 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xff << 1))); 1229 1230 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1231 EXPECT_FALSE(APIntOps::isMask(APInt(N, 0))); 1232 1233 APInt One(N, 1); 1234 for (int I = 1; I <= N; ++I) { 1235 APInt MaskVal = One.shl(I) - 1; 1236 EXPECT_TRUE(APIntOps::isMask(MaskVal)); 1237 } 1238 } 1239 } 1240 1241 #if defined(__clang__) 1242 // Disable the pragma warning from versions of Clang without -Wself-move 1243 #pragma clang diagnostic push 1244 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1245 // Disable the warning that triggers on exactly what is being tested. 1246 #pragma clang diagnostic push 1247 #pragma clang diagnostic ignored "-Wself-move" 1248 #endif 1249 TEST(APIntTest, SelfMoveAssignment) { 1250 APInt X(32, 0xdeadbeef); 1251 X = std::move(X); 1252 EXPECT_EQ(32u, X.getBitWidth()); 1253 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1254 1255 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1256 APInt Y(128, Bits); 1257 Y = std::move(Y); 1258 EXPECT_EQ(128u, Y.getBitWidth()); 1259 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1260 const uint64_t *Raw = Y.getRawData(); 1261 EXPECT_EQ(2u, Y.getNumWords()); 1262 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1263 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1264 } 1265 #if defined(__clang__) 1266 #pragma clang diagnostic pop 1267 #pragma clang diagnostic pop 1268 #endif 1269 } 1270 1271 TEST(APIntTest, reverseBits) { 1272 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1273 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1274 1275 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1276 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1277 1278 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1279 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1280 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1281 1282 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1283 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1284 1285 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1286 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1287 1288 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1289 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1290 1291 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1292 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1293 1294 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1295 1296 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1297 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1298 1299 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1300 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1301 1302 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1303 63, 64, 65, 127, 128, 257, 1024 }) { 1304 for (unsigned I = 0; I < N; ++I) { 1305 APInt X = APInt::getOneBitSet(N, I); 1306 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1307 EXPECT_EQ(Y, X.reverseBits()); 1308 EXPECT_EQ(X, Y.reverseBits()); 1309 } 1310 } 1311 } 1312