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, i61_Count) { 67 APInt i61(61, 1 << 15); 68 EXPECT_EQ(45u, i61.countLeadingZeros()); 69 EXPECT_EQ(0u, i61.countLeadingOnes()); 70 EXPECT_EQ(16u, i61.getActiveBits()); 71 EXPECT_EQ(15u, i61.countTrailingZeros()); 72 EXPECT_EQ(1u, i61.countPopulation()); 73 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue()); 74 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue()); 75 76 i61.setBits(8, 19); 77 EXPECT_EQ(42u, i61.countLeadingZeros()); 78 EXPECT_EQ(0u, i61.countLeadingOnes()); 79 EXPECT_EQ(19u, i61.getActiveBits()); 80 EXPECT_EQ(8u, i61.countTrailingZeros()); 81 EXPECT_EQ(11u, i61.countPopulation()); 82 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue()); 83 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue()); 84 } 85 86 TEST(APIntTest, i65_Count) { 87 APInt i65(65, 0, true); 88 EXPECT_EQ(65u, i65.countLeadingZeros()); 89 EXPECT_EQ(0u, i65.countLeadingOnes()); 90 EXPECT_EQ(0u, i65.getActiveBits()); 91 EXPECT_EQ(1u, i65.getActiveWords()); 92 EXPECT_EQ(65u, i65.countTrailingZeros()); 93 EXPECT_EQ(0u, i65.countPopulation()); 94 95 APInt i65minus(65, 0, true); 96 i65minus.setBit(64); 97 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 98 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 99 EXPECT_EQ(65u, i65minus.getActiveBits()); 100 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 101 EXPECT_EQ(1u, i65minus.countPopulation()); 102 } 103 104 TEST(APIntTest, i128_PositiveCount) { 105 APInt u128max = APInt::getAllOnesValue(128); 106 EXPECT_EQ(128u, u128max.countLeadingOnes()); 107 EXPECT_EQ(0u, u128max.countLeadingZeros()); 108 EXPECT_EQ(128u, u128max.getActiveBits()); 109 EXPECT_EQ(0u, u128max.countTrailingZeros()); 110 EXPECT_EQ(128u, u128max.countTrailingOnes()); 111 EXPECT_EQ(128u, u128max.countPopulation()); 112 113 APInt u64max(128, static_cast<uint64_t>(-1), false); 114 EXPECT_EQ(64u, u64max.countLeadingZeros()); 115 EXPECT_EQ(0u, u64max.countLeadingOnes()); 116 EXPECT_EQ(64u, u64max.getActiveBits()); 117 EXPECT_EQ(0u, u64max.countTrailingZeros()); 118 EXPECT_EQ(64u, u64max.countTrailingOnes()); 119 EXPECT_EQ(64u, u64max.countPopulation()); 120 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 121 122 APInt zero(128, 0, true); 123 EXPECT_EQ(128u, zero.countLeadingZeros()); 124 EXPECT_EQ(0u, zero.countLeadingOnes()); 125 EXPECT_EQ(0u, zero.getActiveBits()); 126 EXPECT_EQ(128u, zero.countTrailingZeros()); 127 EXPECT_EQ(0u, zero.countTrailingOnes()); 128 EXPECT_EQ(0u, zero.countPopulation()); 129 EXPECT_EQ(0u, zero.getSExtValue()); 130 EXPECT_EQ(0u, zero.getZExtValue()); 131 132 APInt one(128, 1, true); 133 EXPECT_EQ(127u, one.countLeadingZeros()); 134 EXPECT_EQ(0u, one.countLeadingOnes()); 135 EXPECT_EQ(1u, one.getActiveBits()); 136 EXPECT_EQ(0u, one.countTrailingZeros()); 137 EXPECT_EQ(1u, one.countTrailingOnes()); 138 EXPECT_EQ(1u, one.countPopulation()); 139 EXPECT_EQ(1, one.getSExtValue()); 140 EXPECT_EQ(1u, one.getZExtValue()); 141 142 APInt s128(128, 2, true); 143 EXPECT_EQ(126u, s128.countLeadingZeros()); 144 EXPECT_EQ(0u, s128.countLeadingOnes()); 145 EXPECT_EQ(2u, s128.getActiveBits()); 146 EXPECT_EQ(1u, s128.countTrailingZeros()); 147 EXPECT_EQ(0u, s128.countTrailingOnes()); 148 EXPECT_EQ(1u, s128.countPopulation()); 149 EXPECT_EQ(2, s128.getSExtValue()); 150 EXPECT_EQ(2u, s128.getZExtValue()); 151 152 // NOP Test 153 s128.setBits(42, 42); 154 EXPECT_EQ(126u, s128.countLeadingZeros()); 155 EXPECT_EQ(0u, s128.countLeadingOnes()); 156 EXPECT_EQ(2u, s128.getActiveBits()); 157 EXPECT_EQ(1u, s128.countTrailingZeros()); 158 EXPECT_EQ(0u, s128.countTrailingOnes()); 159 EXPECT_EQ(1u, s128.countPopulation()); 160 EXPECT_EQ(2, s128.getSExtValue()); 161 EXPECT_EQ(2u, s128.getZExtValue()); 162 163 s128.setBits(3, 32); 164 EXPECT_EQ(96u, s128.countLeadingZeros()); 165 EXPECT_EQ(0u, s128.countLeadingOnes()); 166 EXPECT_EQ(32u, s128.getActiveBits()); 167 EXPECT_EQ(33u, s128.getMinSignedBits()); 168 EXPECT_EQ(1u, s128.countTrailingZeros()); 169 EXPECT_EQ(0u, s128.countTrailingOnes()); 170 EXPECT_EQ(30u, s128.countPopulation()); 171 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 172 173 s128.setBits(62, 128); 174 EXPECT_EQ(0u, s128.countLeadingZeros()); 175 EXPECT_EQ(66u, s128.countLeadingOnes()); 176 EXPECT_EQ(128u, s128.getActiveBits()); 177 EXPECT_EQ(63u, s128.getMinSignedBits()); 178 EXPECT_EQ(1u, s128.countTrailingZeros()); 179 EXPECT_EQ(0u, s128.countTrailingOnes()); 180 EXPECT_EQ(96u, s128.countPopulation()); 181 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 182 static_cast<uint32_t>((~0u << 3) | 2)), 183 s128.getSExtValue()); 184 } 185 186 TEST(APIntTest, i256) { 187 APInt s256(256, 15, true); 188 EXPECT_EQ(252u, s256.countLeadingZeros()); 189 EXPECT_EQ(0u, s256.countLeadingOnes()); 190 EXPECT_EQ(4u, s256.getActiveBits()); 191 EXPECT_EQ(0u, s256.countTrailingZeros()); 192 EXPECT_EQ(4u, s256.countTrailingOnes()); 193 EXPECT_EQ(4u, s256.countPopulation()); 194 EXPECT_EQ(15, s256.getSExtValue()); 195 EXPECT_EQ(15u, s256.getZExtValue()); 196 197 s256.setBits(62, 66); 198 EXPECT_EQ(190u, s256.countLeadingZeros()); 199 EXPECT_EQ(0u, s256.countLeadingOnes()); 200 EXPECT_EQ(66u, s256.getActiveBits()); 201 EXPECT_EQ(67u, s256.getMinSignedBits()); 202 EXPECT_EQ(0u, s256.countTrailingZeros()); 203 EXPECT_EQ(4u, s256.countTrailingOnes()); 204 EXPECT_EQ(8u, s256.countPopulation()); 205 206 s256.setBits(60, 256); 207 EXPECT_EQ(0u, s256.countLeadingZeros()); 208 EXPECT_EQ(196u, s256.countLeadingOnes()); 209 EXPECT_EQ(256u, s256.getActiveBits()); 210 EXPECT_EQ(61u, s256.getMinSignedBits()); 211 EXPECT_EQ(0u, s256.countTrailingZeros()); 212 EXPECT_EQ(4u, s256.countTrailingOnes()); 213 EXPECT_EQ(200u, s256.countPopulation()); 214 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 215 } 216 217 TEST(APIntTest, i1) { 218 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 219 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 220 const APInt zero(1, 0); 221 const APInt one(1, 1); 222 const APInt two(1, 2); 223 224 EXPECT_EQ(0, neg_two.getSExtValue()); 225 EXPECT_EQ(-1, neg_one.getSExtValue()); 226 EXPECT_EQ(1u, neg_one.getZExtValue()); 227 EXPECT_EQ(0u, zero.getZExtValue()); 228 EXPECT_EQ(-1, one.getSExtValue()); 229 EXPECT_EQ(1u, one.getZExtValue()); 230 EXPECT_EQ(0u, two.getZExtValue()); 231 EXPECT_EQ(0, two.getSExtValue()); 232 233 // Basic equalities for 1-bit values. 234 EXPECT_EQ(zero, two); 235 EXPECT_EQ(zero, neg_two); 236 EXPECT_EQ(one, neg_one); 237 EXPECT_EQ(two, neg_two); 238 239 // Min/max signed values. 240 EXPECT_TRUE(zero.isMaxSignedValue()); 241 EXPECT_FALSE(one.isMaxSignedValue()); 242 EXPECT_FALSE(zero.isMinSignedValue()); 243 EXPECT_TRUE(one.isMinSignedValue()); 244 245 // Additions. 246 EXPECT_EQ(two, one + one); 247 EXPECT_EQ(zero, neg_one + one); 248 EXPECT_EQ(neg_two, neg_one + neg_one); 249 250 // Subtractions. 251 EXPECT_EQ(neg_two, neg_one - one); 252 EXPECT_EQ(two, one - neg_one); 253 EXPECT_EQ(zero, one - one); 254 255 // And 256 EXPECT_EQ(zero, zero & zero); 257 EXPECT_EQ(zero, one & zero); 258 EXPECT_EQ(zero, zero & one); 259 EXPECT_EQ(one, one & one); 260 EXPECT_EQ(zero, zero & zero); 261 EXPECT_EQ(zero, neg_one & zero); 262 EXPECT_EQ(zero, zero & neg_one); 263 EXPECT_EQ(neg_one, neg_one & neg_one); 264 265 // Or 266 EXPECT_EQ(zero, zero | zero); 267 EXPECT_EQ(one, one | zero); 268 EXPECT_EQ(one, zero | one); 269 EXPECT_EQ(one, one | one); 270 EXPECT_EQ(zero, zero | zero); 271 EXPECT_EQ(neg_one, neg_one | zero); 272 EXPECT_EQ(neg_one, zero | neg_one); 273 EXPECT_EQ(neg_one, neg_one | neg_one); 274 275 // Xor 276 EXPECT_EQ(zero, zero ^ zero); 277 EXPECT_EQ(one, one ^ zero); 278 EXPECT_EQ(one, zero ^ one); 279 EXPECT_EQ(zero, one ^ one); 280 EXPECT_EQ(zero, zero ^ zero); 281 EXPECT_EQ(neg_one, neg_one ^ zero); 282 EXPECT_EQ(neg_one, zero ^ neg_one); 283 EXPECT_EQ(zero, neg_one ^ neg_one); 284 285 // Shifts. 286 EXPECT_EQ(zero, one << one); 287 EXPECT_EQ(one, one << zero); 288 EXPECT_EQ(zero, one.shl(1)); 289 EXPECT_EQ(one, one.shl(0)); 290 EXPECT_EQ(zero, one.lshr(1)); 291 EXPECT_EQ(zero, one.ashr(1)); 292 293 // Rotates. 294 EXPECT_EQ(one, one.rotl(0)); 295 EXPECT_EQ(one, one.rotl(1)); 296 EXPECT_EQ(one, one.rotr(0)); 297 EXPECT_EQ(one, one.rotr(1)); 298 299 // Multiplies. 300 EXPECT_EQ(neg_one, neg_one * one); 301 EXPECT_EQ(neg_one, one * neg_one); 302 EXPECT_EQ(one, neg_one * neg_one); 303 EXPECT_EQ(one, one * one); 304 305 // Divides. 306 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 307 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 308 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 309 EXPECT_EQ(one, one.sdiv(one)); 310 311 EXPECT_EQ(neg_one, one.udiv(neg_one)); 312 EXPECT_EQ(neg_one, neg_one.udiv(one)); 313 EXPECT_EQ(one, neg_one.udiv(neg_one)); 314 EXPECT_EQ(one, one.udiv(one)); 315 316 // Remainders. 317 EXPECT_EQ(zero, neg_one.srem(one)); 318 EXPECT_EQ(zero, neg_one.urem(one)); 319 EXPECT_EQ(zero, one.srem(neg_one)); 320 321 // sdivrem 322 { 323 APInt q(8, 0); 324 APInt r(8, 0); 325 APInt one(8, 1); 326 APInt two(8, 2); 327 APInt nine(8, 9); 328 APInt four(8, 4); 329 330 EXPECT_EQ(nine.srem(two), one); 331 EXPECT_EQ(nine.srem(-two), one); 332 EXPECT_EQ((-nine).srem(two), -one); 333 EXPECT_EQ((-nine).srem(-two), -one); 334 335 APInt::sdivrem(nine, two, q, r); 336 EXPECT_EQ(four, q); 337 EXPECT_EQ(one, r); 338 APInt::sdivrem(-nine, two, q, r); 339 EXPECT_EQ(-four, q); 340 EXPECT_EQ(-one, r); 341 APInt::sdivrem(nine, -two, q, r); 342 EXPECT_EQ(-four, q); 343 EXPECT_EQ(one, r); 344 APInt::sdivrem(-nine, -two, q, r); 345 EXPECT_EQ(four, q); 346 EXPECT_EQ(-one, r); 347 } 348 } 349 350 TEST(APIntTest, compare) { 351 std::array<APInt, 5> testVals{{ 352 APInt{16, 2}, 353 APInt{16, 1}, 354 APInt{16, 0}, 355 APInt{16, (uint64_t)-1, true}, 356 APInt{16, (uint64_t)-2, true}, 357 }}; 358 359 for (auto &arg1 : testVals) 360 for (auto &arg2 : testVals) { 361 auto uv1 = arg1.getZExtValue(); 362 auto uv2 = arg2.getZExtValue(); 363 auto sv1 = arg1.getSExtValue(); 364 auto sv2 = arg2.getSExtValue(); 365 366 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 367 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 368 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 369 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 370 371 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 372 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 373 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 374 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 375 376 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 377 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 378 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 379 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 380 381 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 382 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 383 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 384 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 385 } 386 } 387 388 TEST(APIntTest, compareWithRawIntegers) { 389 EXPECT_TRUE(!APInt(8, 1).uge(256)); 390 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 391 EXPECT_TRUE( APInt(8, 1).ule(256)); 392 EXPECT_TRUE( APInt(8, 1).ult(256)); 393 EXPECT_TRUE(!APInt(8, 1).sge(256)); 394 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 395 EXPECT_TRUE( APInt(8, 1).sle(256)); 396 EXPECT_TRUE( APInt(8, 1).slt(256)); 397 EXPECT_TRUE(!(APInt(8, 0) == 256)); 398 EXPECT_TRUE( APInt(8, 0) != 256); 399 EXPECT_TRUE(!(APInt(8, 1) == 256)); 400 EXPECT_TRUE( APInt(8, 1) != 256); 401 402 auto uint64max = UINT64_MAX; 403 auto int64max = INT64_MAX; 404 auto int64min = INT64_MIN; 405 406 auto u64 = APInt{128, uint64max}; 407 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 408 auto big = u64 + 1; 409 410 EXPECT_TRUE( u64.uge(uint64max)); 411 EXPECT_TRUE(!u64.ugt(uint64max)); 412 EXPECT_TRUE( u64.ule(uint64max)); 413 EXPECT_TRUE(!u64.ult(uint64max)); 414 EXPECT_TRUE( u64.sge(int64max)); 415 EXPECT_TRUE( u64.sgt(int64max)); 416 EXPECT_TRUE(!u64.sle(int64max)); 417 EXPECT_TRUE(!u64.slt(int64max)); 418 EXPECT_TRUE( u64.sge(int64min)); 419 EXPECT_TRUE( u64.sgt(int64min)); 420 EXPECT_TRUE(!u64.sle(int64min)); 421 EXPECT_TRUE(!u64.slt(int64min)); 422 423 EXPECT_TRUE(u64 == uint64max); 424 EXPECT_TRUE(u64 != int64max); 425 EXPECT_TRUE(u64 != int64min); 426 427 EXPECT_TRUE(!s64.uge(uint64max)); 428 EXPECT_TRUE(!s64.ugt(uint64max)); 429 EXPECT_TRUE( s64.ule(uint64max)); 430 EXPECT_TRUE( s64.ult(uint64max)); 431 EXPECT_TRUE( s64.sge(int64max)); 432 EXPECT_TRUE(!s64.sgt(int64max)); 433 EXPECT_TRUE( s64.sle(int64max)); 434 EXPECT_TRUE(!s64.slt(int64max)); 435 EXPECT_TRUE( s64.sge(int64min)); 436 EXPECT_TRUE( s64.sgt(int64min)); 437 EXPECT_TRUE(!s64.sle(int64min)); 438 EXPECT_TRUE(!s64.slt(int64min)); 439 440 EXPECT_TRUE(s64 != uint64max); 441 EXPECT_TRUE(s64 == int64max); 442 EXPECT_TRUE(s64 != int64min); 443 444 EXPECT_TRUE( big.uge(uint64max)); 445 EXPECT_TRUE( big.ugt(uint64max)); 446 EXPECT_TRUE(!big.ule(uint64max)); 447 EXPECT_TRUE(!big.ult(uint64max)); 448 EXPECT_TRUE( big.sge(int64max)); 449 EXPECT_TRUE( big.sgt(int64max)); 450 EXPECT_TRUE(!big.sle(int64max)); 451 EXPECT_TRUE(!big.slt(int64max)); 452 EXPECT_TRUE( big.sge(int64min)); 453 EXPECT_TRUE( big.sgt(int64min)); 454 EXPECT_TRUE(!big.sle(int64min)); 455 EXPECT_TRUE(!big.slt(int64min)); 456 457 EXPECT_TRUE(big != uint64max); 458 EXPECT_TRUE(big != int64max); 459 EXPECT_TRUE(big != int64min); 460 } 461 462 TEST(APIntTest, compareWithInt64Min) { 463 int64_t edge = INT64_MIN; 464 int64_t edgeP1 = edge + 1; 465 int64_t edgeM1 = INT64_MAX; 466 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 467 468 EXPECT_TRUE(!a.slt(edge)); 469 EXPECT_TRUE( a.sle(edge)); 470 EXPECT_TRUE(!a.sgt(edge)); 471 EXPECT_TRUE( a.sge(edge)); 472 EXPECT_TRUE( a.slt(edgeP1)); 473 EXPECT_TRUE( a.sle(edgeP1)); 474 EXPECT_TRUE(!a.sgt(edgeP1)); 475 EXPECT_TRUE(!a.sge(edgeP1)); 476 EXPECT_TRUE( a.slt(edgeM1)); 477 EXPECT_TRUE( a.sle(edgeM1)); 478 EXPECT_TRUE(!a.sgt(edgeM1)); 479 EXPECT_TRUE(!a.sge(edgeM1)); 480 } 481 482 TEST(APIntTest, compareWithHalfInt64Max) { 483 uint64_t edge = 0x4000000000000000; 484 uint64_t edgeP1 = edge + 1; 485 uint64_t edgeM1 = edge - 1; 486 auto a = APInt{64, edge}; 487 488 EXPECT_TRUE(!a.ult(edge)); 489 EXPECT_TRUE( a.ule(edge)); 490 EXPECT_TRUE(!a.ugt(edge)); 491 EXPECT_TRUE( a.uge(edge)); 492 EXPECT_TRUE( a.ult(edgeP1)); 493 EXPECT_TRUE( a.ule(edgeP1)); 494 EXPECT_TRUE(!a.ugt(edgeP1)); 495 EXPECT_TRUE(!a.uge(edgeP1)); 496 EXPECT_TRUE(!a.ult(edgeM1)); 497 EXPECT_TRUE(!a.ule(edgeM1)); 498 EXPECT_TRUE( a.ugt(edgeM1)); 499 EXPECT_TRUE( a.uge(edgeM1)); 500 501 EXPECT_TRUE(!a.slt(edge)); 502 EXPECT_TRUE( a.sle(edge)); 503 EXPECT_TRUE(!a.sgt(edge)); 504 EXPECT_TRUE( a.sge(edge)); 505 EXPECT_TRUE( a.slt(edgeP1)); 506 EXPECT_TRUE( a.sle(edgeP1)); 507 EXPECT_TRUE(!a.sgt(edgeP1)); 508 EXPECT_TRUE(!a.sge(edgeP1)); 509 EXPECT_TRUE(!a.slt(edgeM1)); 510 EXPECT_TRUE(!a.sle(edgeM1)); 511 EXPECT_TRUE( a.sgt(edgeM1)); 512 EXPECT_TRUE( a.sge(edgeM1)); 513 } 514 515 TEST(APIntTest, compareLargeIntegers) { 516 // Make sure all the combinations of signed comparisons work with big ints. 517 auto One = APInt{128, static_cast<uint64_t>(1), true}; 518 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 519 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 520 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 521 522 EXPECT_TRUE(!One.slt(One)); 523 EXPECT_TRUE(!Two.slt(One)); 524 EXPECT_TRUE(MinusOne.slt(One)); 525 EXPECT_TRUE(MinusTwo.slt(One)); 526 527 EXPECT_TRUE(One.slt(Two)); 528 EXPECT_TRUE(!Two.slt(Two)); 529 EXPECT_TRUE(MinusOne.slt(Two)); 530 EXPECT_TRUE(MinusTwo.slt(Two)); 531 532 EXPECT_TRUE(!One.slt(MinusOne)); 533 EXPECT_TRUE(!Two.slt(MinusOne)); 534 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 535 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 536 537 EXPECT_TRUE(!One.slt(MinusTwo)); 538 EXPECT_TRUE(!Two.slt(MinusTwo)); 539 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 540 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 541 } 542 543 TEST(APIntTest, binaryOpsWithRawIntegers) { 544 // Single word check. 545 uint64_t E1 = 0x2CA7F46BF6569915ULL; 546 APInt A1(64, E1); 547 548 EXPECT_EQ(A1 & E1, E1); 549 EXPECT_EQ(A1 & 0, 0); 550 EXPECT_EQ(A1 & 1, 1); 551 EXPECT_EQ(A1 & 5, 5); 552 EXPECT_EQ(A1 & UINT64_MAX, E1); 553 554 EXPECT_EQ(A1 | E1, E1); 555 EXPECT_EQ(A1 | 0, E1); 556 EXPECT_EQ(A1 | 1, E1); 557 EXPECT_EQ(A1 | 2, E1 | 2); 558 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 559 560 EXPECT_EQ(A1 ^ E1, 0); 561 EXPECT_EQ(A1 ^ 0, E1); 562 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 563 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 564 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 565 566 // Multiword check. 567 uint64_t N = 0xEB6EB136591CBA21ULL; 568 integerPart E2[4] = { 569 N, 570 0x7B9358BD6A33F10AULL, 571 0x7E7FFA5EADD8846ULL, 572 0x305F341CA00B613DULL 573 }; 574 APInt A2(integerPartWidth*4, E2); 575 576 EXPECT_EQ(A2 & N, N); 577 EXPECT_EQ(A2 & 0, 0); 578 EXPECT_EQ(A2 & 1, 1); 579 EXPECT_EQ(A2 & 5, 1); 580 EXPECT_EQ(A2 & UINT64_MAX, N); 581 582 EXPECT_EQ(A2 | N, A2); 583 EXPECT_EQ(A2 | 0, A2); 584 EXPECT_EQ(A2 | 1, A2); 585 EXPECT_EQ(A2 | 2, A2 + 2); 586 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 587 588 EXPECT_EQ(A2 ^ N, A2 - N); 589 EXPECT_EQ(A2 ^ 0, A2); 590 EXPECT_EQ(A2 ^ 1, A2 - 1); 591 EXPECT_EQ(A2 ^ 7, A2 + 5); 592 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 593 } 594 595 TEST(APIntTest, rvalue_arithmetic) { 596 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 597 598 // Lamdba to return an APInt by value, but also provide the raw value of the 599 // allocated data. 600 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 601 APInt V(129, HexString, 16); 602 RawData = V.getRawData(); 603 return V; 604 }; 605 606 APInt One(129, "1", 16); 607 APInt Two(129, "2", 16); 608 APInt Three(129, "3", 16); 609 APInt MinusOne = -One; 610 611 const uint64_t *RawDataL = nullptr; 612 const uint64_t *RawDataR = nullptr; 613 614 { 615 // 1 + 1 = 2 616 APInt AddLL = One + One; 617 EXPECT_EQ(AddLL, Two); 618 619 APInt AddLR = One + getRValue("1", RawDataR); 620 EXPECT_EQ(AddLR, Two); 621 EXPECT_EQ(AddLR.getRawData(), RawDataR); 622 623 APInt AddRL = getRValue("1", RawDataL) + One; 624 EXPECT_EQ(AddRL, Two); 625 EXPECT_EQ(AddRL.getRawData(), RawDataL); 626 627 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 628 EXPECT_EQ(AddRR, Two); 629 EXPECT_EQ(AddRR.getRawData(), RawDataR); 630 631 // LValue's and constants 632 APInt AddLK = One + 1; 633 EXPECT_EQ(AddLK, Two); 634 635 APInt AddKL = 1 + One; 636 EXPECT_EQ(AddKL, Two); 637 638 // RValue's and constants 639 APInt AddRK = getRValue("1", RawDataL) + 1; 640 EXPECT_EQ(AddRK, Two); 641 EXPECT_EQ(AddRK.getRawData(), RawDataL); 642 643 APInt AddKR = 1 + getRValue("1", RawDataR); 644 EXPECT_EQ(AddKR, Two); 645 EXPECT_EQ(AddKR.getRawData(), RawDataR); 646 } 647 648 { 649 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 650 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 651 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 652 653 APInt AddLL = AllOnes + Two; 654 EXPECT_EQ(AddLL, HighOneLowOne); 655 656 APInt AddLR = AllOnes + getRValue("2", RawDataR); 657 EXPECT_EQ(AddLR, HighOneLowOne); 658 EXPECT_EQ(AddLR.getRawData(), RawDataR); 659 660 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 661 EXPECT_EQ(AddRL, HighOneLowOne); 662 EXPECT_EQ(AddRL.getRawData(), RawDataL); 663 664 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 665 getRValue("2", RawDataR); 666 EXPECT_EQ(AddRR, HighOneLowOne); 667 EXPECT_EQ(AddRR.getRawData(), RawDataR); 668 669 // LValue's and constants 670 APInt AddLK = AllOnes + 2; 671 EXPECT_EQ(AddLK, HighOneLowOne); 672 673 APInt AddKL = 2 + AllOnes; 674 EXPECT_EQ(AddKL, HighOneLowOne); 675 676 // RValue's and constants 677 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 678 EXPECT_EQ(AddRK, HighOneLowOne); 679 EXPECT_EQ(AddRK.getRawData(), RawDataL); 680 681 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 682 EXPECT_EQ(AddKR, HighOneLowOne); 683 EXPECT_EQ(AddKR.getRawData(), RawDataR); 684 } 685 686 { 687 // 2 - 1 = 1 688 APInt SubLL = Two - One; 689 EXPECT_EQ(SubLL, One); 690 691 APInt SubLR = Two - getRValue("1", RawDataR); 692 EXPECT_EQ(SubLR, One); 693 EXPECT_EQ(SubLR.getRawData(), RawDataR); 694 695 APInt SubRL = getRValue("2", RawDataL) - One; 696 EXPECT_EQ(SubRL, One); 697 EXPECT_EQ(SubRL.getRawData(), RawDataL); 698 699 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 700 EXPECT_EQ(SubRR, One); 701 EXPECT_EQ(SubRR.getRawData(), RawDataR); 702 703 // LValue's and constants 704 APInt SubLK = Two - 1; 705 EXPECT_EQ(SubLK, One); 706 707 APInt SubKL = 2 - One; 708 EXPECT_EQ(SubKL, One); 709 710 // RValue's and constants 711 APInt SubRK = getRValue("2", RawDataL) - 1; 712 EXPECT_EQ(SubRK, One); 713 EXPECT_EQ(SubRK.getRawData(), RawDataL); 714 715 APInt SubKR = 2 - getRValue("1", RawDataR); 716 EXPECT_EQ(SubKR, One); 717 EXPECT_EQ(SubKR.getRawData(), RawDataR); 718 } 719 720 { 721 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 722 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 723 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 724 725 APInt SubLL = HighOneLowOne - AllOnes; 726 EXPECT_EQ(SubLL, Two); 727 728 APInt SubLR = HighOneLowOne - 729 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 730 EXPECT_EQ(SubLR, Two); 731 EXPECT_EQ(SubLR.getRawData(), RawDataR); 732 733 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 734 AllOnes; 735 EXPECT_EQ(SubRL, Two); 736 EXPECT_EQ(SubRL.getRawData(), RawDataL); 737 738 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 739 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 740 EXPECT_EQ(SubRR, Two); 741 EXPECT_EQ(SubRR.getRawData(), RawDataR); 742 743 // LValue's and constants 744 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 745 APInt SubLK = HighOneLowOne - 2; 746 EXPECT_EQ(SubLK, AllOnes); 747 748 // 2 - (-1) = 3 749 APInt SubKL = 2 - MinusOne; 750 EXPECT_EQ(SubKL, Three); 751 752 // RValue's and constants 753 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 754 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 755 EXPECT_EQ(SubRK, AllOnes); 756 EXPECT_EQ(SubRK.getRawData(), RawDataL); 757 758 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 759 EXPECT_EQ(SubKR, Three); 760 EXPECT_EQ(SubKR.getRawData(), RawDataR); 761 } 762 } 763 764 TEST(APIntTest, rvalue_invert) { 765 // Lamdba to return an APInt by value, but also provide the raw value of the 766 // allocated data. 767 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 768 APInt V(129, HexString, 16); 769 RawData = V.getRawData(); 770 return V; 771 }; 772 773 APInt One(129, 1); 774 APInt NegativeTwo(129, -2ULL, true); 775 776 const uint64_t *RawData = nullptr; 777 778 { 779 // ~1 = -2 780 APInt NegL = ~One; 781 EXPECT_EQ(NegL, NegativeTwo); 782 783 APInt NegR = ~getRValue("1", RawData); 784 EXPECT_EQ(NegR, NegativeTwo); 785 EXPECT_EQ(NegR.getRawData(), RawData); 786 } 787 } 788 789 // Tests different div/rem varaints using scheme (a * b + c) / a 790 void testDiv(APInt a, APInt b, APInt c) { 791 ASSERT_TRUE(a.uge(b)); // Must: a >= b 792 ASSERT_TRUE(a.ugt(c)); // Must: a > c 793 794 auto p = a * b + c; 795 796 auto q = p.udiv(a); 797 auto r = p.urem(a); 798 EXPECT_EQ(b, q); 799 EXPECT_EQ(c, r); 800 APInt::udivrem(p, a, q, r); 801 EXPECT_EQ(b, q); 802 EXPECT_EQ(c, r); 803 q = p.sdiv(a); 804 r = p.srem(a); 805 EXPECT_EQ(b, q); 806 EXPECT_EQ(c, r); 807 APInt::sdivrem(p, a, q, r); 808 EXPECT_EQ(b, q); 809 EXPECT_EQ(c, r); 810 811 if (b.ugt(c)) { // Test also symmetric case 812 q = p.udiv(b); 813 r = p.urem(b); 814 EXPECT_EQ(a, q); 815 EXPECT_EQ(c, r); 816 APInt::udivrem(p, b, q, r); 817 EXPECT_EQ(a, q); 818 EXPECT_EQ(c, r); 819 q = p.sdiv(b); 820 r = p.srem(b); 821 EXPECT_EQ(a, q); 822 EXPECT_EQ(c, r); 823 APInt::sdivrem(p, b, q, r); 824 EXPECT_EQ(a, q); 825 EXPECT_EQ(c, r); 826 } 827 } 828 829 TEST(APIntTest, divrem_big1) { 830 // Tests KnuthDiv rare step D6 831 testDiv({256, "1ffffffffffffffff", 16}, 832 {256, "1ffffffffffffffff", 16}, 833 {256, 0}); 834 } 835 836 TEST(APIntTest, divrem_big2) { 837 // Tests KnuthDiv rare step D6 838 testDiv({1024, "112233ceff" 839 "cecece000000ffffffffffffffffffff" 840 "ffffffffffffffffffffffffffffffff" 841 "ffffffffffffffffffffffffffffffff" 842 "ffffffffffffffffffffffffffffff33", 16}, 843 {1024, "111111ffffffffffffffff" 844 "ffffffffffffffffffffffffffffffff" 845 "fffffffffffffffffffffffffffffccf" 846 "ffffffffffffffffffffffffffffff00", 16}, 847 {1024, 7919}); 848 } 849 850 TEST(APIntTest, divrem_big3) { 851 // Tests KnuthDiv case without shift 852 testDiv({256, "80000001ffffffffffffffff", 16}, 853 {256, "ffffffffffffff0000000", 16}, 854 {256, 4219}); 855 } 856 857 TEST(APIntTest, divrem_big4) { 858 // Tests heap allocation in divide() enfoced by huge numbers 859 testDiv(APInt{4096, 5}.shl(2001), 860 APInt{4096, 1}.shl(2000), 861 APInt{4096, 4219*13}); 862 } 863 864 TEST(APIntTest, divrem_big5) { 865 // Tests one word divisor case of divide() 866 testDiv(APInt{1024, 19}.shl(811), 867 APInt{1024, 4356013}, // one word 868 APInt{1024, 1}); 869 } 870 871 TEST(APIntTest, divrem_big6) { 872 // Tests some rare "borrow" cases in D4 step 873 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 874 APInt{512, "10000000000000001000000000000001", 16}, 875 APInt{512, "10000000000000000000000000000000", 16}); 876 } 877 878 TEST(APIntTest, divrem_big7) { 879 // Yet another test for KnuthDiv rare step D6. 880 testDiv({224, "800000008000000200000005", 16}, 881 {224, "fffffffd", 16}, 882 {224, "80000000800000010000000f", 16}); 883 } 884 885 TEST(APIntTest, fromString) { 886 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 887 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 888 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 889 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 890 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 891 892 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 893 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 894 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 895 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 896 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 897 898 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 899 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 900 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 901 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 902 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 903 904 905 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 906 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 907 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 908 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 909 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 910 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 911 912 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 913 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 914 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 915 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 916 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 917 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 918 919 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 920 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 921 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 922 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 923 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 924 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 925 926 927 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 928 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 929 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 930 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 931 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 932 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 933 934 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 935 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 936 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 937 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 938 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 939 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 940 941 942 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 943 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 944 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 945 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 946 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 947 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 948 949 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 950 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 951 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 952 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 953 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 954 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 955 956 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 957 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 958 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 959 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 960 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 961 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 962 963 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 964 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 965 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 966 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 967 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 968 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 969 } 970 971 TEST(APIntTest, FromArray) { 972 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 973 } 974 975 TEST(APIntTest, StringBitsNeeded2) { 976 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 977 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 978 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 979 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 980 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 981 982 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 983 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 984 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 985 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 986 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 987 988 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 989 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 990 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 991 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 992 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 993 } 994 995 TEST(APIntTest, StringBitsNeeded8) { 996 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 997 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 998 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 999 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 1000 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 1001 1002 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 1003 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 1004 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 1005 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 1006 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 1007 1008 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 1009 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 1010 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 1011 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 1012 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 1013 } 1014 1015 TEST(APIntTest, StringBitsNeeded10) { 1016 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 1017 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 1018 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 1019 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 1020 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 1021 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 1022 1023 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1024 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1025 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1026 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1027 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1028 1029 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1030 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1031 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1032 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1033 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1034 } 1035 1036 TEST(APIntTest, StringBitsNeeded16) { 1037 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1038 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1039 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1040 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1041 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1042 1043 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1044 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1045 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1046 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1047 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1048 1049 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1050 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1051 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1052 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1053 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1054 } 1055 1056 TEST(APIntTest, toString) { 1057 SmallString<16> S; 1058 bool isSigned; 1059 1060 APInt(8, 0).toString(S, 2, true, true); 1061 EXPECT_EQ(S.str().str(), "0b0"); 1062 S.clear(); 1063 APInt(8, 0).toString(S, 8, true, true); 1064 EXPECT_EQ(S.str().str(), "00"); 1065 S.clear(); 1066 APInt(8, 0).toString(S, 10, true, true); 1067 EXPECT_EQ(S.str().str(), "0"); 1068 S.clear(); 1069 APInt(8, 0).toString(S, 16, true, true); 1070 EXPECT_EQ(S.str().str(), "0x0"); 1071 S.clear(); 1072 APInt(8, 0).toString(S, 36, true, false); 1073 EXPECT_EQ(S.str().str(), "0"); 1074 S.clear(); 1075 1076 isSigned = false; 1077 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1078 EXPECT_EQ(S.str().str(), "0b11111111"); 1079 S.clear(); 1080 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1081 EXPECT_EQ(S.str().str(), "0377"); 1082 S.clear(); 1083 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1084 EXPECT_EQ(S.str().str(), "255"); 1085 S.clear(); 1086 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1087 EXPECT_EQ(S.str().str(), "0xFF"); 1088 S.clear(); 1089 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1090 EXPECT_EQ(S.str().str(), "73"); 1091 S.clear(); 1092 1093 isSigned = true; 1094 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1095 EXPECT_EQ(S.str().str(), "-0b1"); 1096 S.clear(); 1097 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1098 EXPECT_EQ(S.str().str(), "-01"); 1099 S.clear(); 1100 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1101 EXPECT_EQ(S.str().str(), "-1"); 1102 S.clear(); 1103 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1104 EXPECT_EQ(S.str().str(), "-0x1"); 1105 S.clear(); 1106 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1107 EXPECT_EQ(S.str().str(), "-1"); 1108 S.clear(); 1109 } 1110 1111 TEST(APIntTest, Log2) { 1112 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1113 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1114 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1115 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1116 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1117 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1118 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1119 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1120 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1121 } 1122 1123 TEST(APIntTest, magic) { 1124 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 1125 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 1126 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 1127 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 1128 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 1129 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 1130 } 1131 1132 TEST(APIntTest, magicu) { 1133 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 1134 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 1135 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 1136 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 1137 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 1138 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 1139 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 1140 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 1141 } 1142 1143 #ifdef GTEST_HAS_DEATH_TEST 1144 #ifndef NDEBUG 1145 TEST(APIntTest, StringDeath) { 1146 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 1147 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 1148 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1149 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 1150 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 1151 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 1152 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 1153 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1154 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 1155 } 1156 #endif 1157 #endif 1158 1159 TEST(APIntTest, mul_clear) { 1160 APInt ValA(65, -1ULL); 1161 APInt ValB(65, 4); 1162 APInt ValC(65, 0); 1163 ValC = ValA * ValB; 1164 ValA *= ValB; 1165 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 1166 } 1167 1168 TEST(APIntTest, Rotate) { 1169 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1170 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1171 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1172 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1173 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1174 1175 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1176 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1177 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1178 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1179 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1180 1181 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1182 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1183 1184 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1185 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1186 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1187 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1188 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1189 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1190 1191 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1192 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1193 1194 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1195 1196 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1197 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1198 1199 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1200 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1201 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1202 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1203 1204 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1205 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1206 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1207 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1208 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1209 1210 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1211 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1212 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1213 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1214 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1215 1216 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1217 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1218 1219 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1220 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1221 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1222 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1223 1224 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1225 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1226 1227 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1228 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1229 1230 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1231 1232 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1233 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1234 1235 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1236 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1237 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1238 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1239 1240 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1241 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1242 EXPECT_EQ(Rot, Big.rotr(144)); 1243 1244 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1245 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1246 } 1247 1248 TEST(APIntTest, Splat) { 1249 APInt ValA(8, 0x01); 1250 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1251 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1252 1253 APInt ValB(3, 5); 1254 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1255 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1256 } 1257 1258 TEST(APIntTest, tcDecrement) { 1259 // Test single word decrement. 1260 1261 // No out borrow. 1262 { 1263 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 1264 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1265 EXPECT_EQ(carry, integerPart(0)); 1266 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 1267 } 1268 1269 // With out borrow. 1270 { 1271 integerPart singleWord = 0; 1272 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1273 EXPECT_EQ(carry, integerPart(1)); 1274 EXPECT_EQ(singleWord, ~integerPart(0)); 1275 } 1276 1277 // Test multiword decrement. 1278 1279 // No across word borrow, no out borrow. 1280 { 1281 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 1282 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 1283 APInt::tcDecrement(test, 4); 1284 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1285 } 1286 1287 // 1 across word borrow, no out borrow. 1288 { 1289 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 1290 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 1291 integerPart carry = APInt::tcDecrement(test, 4); 1292 EXPECT_EQ(carry, integerPart(0)); 1293 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1294 } 1295 1296 // 2 across word borrow, no out borrow. 1297 { 1298 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 1299 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 1300 integerPart carry = APInt::tcDecrement(test, 4); 1301 EXPECT_EQ(carry, integerPart(0)); 1302 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1303 } 1304 1305 // 3 across word borrow, no out borrow. 1306 { 1307 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 1308 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 1309 integerPart carry = APInt::tcDecrement(test, 4); 1310 EXPECT_EQ(carry, integerPart(0)); 1311 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1312 } 1313 1314 // 3 across word borrow, with out borrow. 1315 { 1316 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 1317 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 1318 integerPart carry = APInt::tcDecrement(test, 4); 1319 EXPECT_EQ(carry, integerPart(1)); 1320 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1321 } 1322 } 1323 1324 TEST(APIntTest, arrayAccess) { 1325 // Single word check. 1326 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1327 APInt A1(64, E1); 1328 for (unsigned i = 0, e = 64; i < e; ++i) { 1329 EXPECT_EQ(bool(E1 & (1ULL << i)), 1330 A1[i]); 1331 } 1332 1333 // Multiword check. 1334 integerPart E2[4] = { 1335 0xEB6EB136591CBA21ULL, 1336 0x7B9358BD6A33F10AULL, 1337 0x7E7FFA5EADD8846ULL, 1338 0x305F341CA00B613DULL 1339 }; 1340 APInt A2(integerPartWidth*4, E2); 1341 for (unsigned i = 0; i < 4; ++i) { 1342 for (unsigned j = 0; j < integerPartWidth; ++j) { 1343 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1344 A2[i*integerPartWidth + j]); 1345 } 1346 } 1347 } 1348 1349 TEST(APIntTest, LargeAPIntConstruction) { 1350 // Check that we can properly construct very large APInt. It is very 1351 // unlikely that people will ever do this, but it is a legal input, 1352 // so we should not crash on it. 1353 APInt A9(UINT32_MAX, 0); 1354 EXPECT_FALSE(A9.getBoolValue()); 1355 } 1356 1357 TEST(APIntTest, nearestLogBase2) { 1358 // Single word check. 1359 1360 // Test round up. 1361 uint64_t I1 = 0x1800001; 1362 APInt A1(64, I1); 1363 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1364 1365 // Test round down. 1366 uint64_t I2 = 0x1000011; 1367 APInt A2(64, I2); 1368 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1369 1370 // Test ties round up. 1371 uint64_t I3 = 0x1800000; 1372 APInt A3(64, I3); 1373 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1374 1375 // Multiple word check. 1376 1377 // Test round up. 1378 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 1379 APInt A4(integerPartWidth*4, I4); 1380 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1381 1382 // Test round down. 1383 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 1384 APInt A5(integerPartWidth*4, I5); 1385 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1386 1387 // Test ties round up. 1388 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1389 APInt A6(integerPartWidth*4, I6); 1390 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1391 1392 // Test BitWidth == 1 special cases. 1393 APInt A7(1, 1); 1394 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1395 APInt A8(1, 0); 1396 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1397 1398 // Test the zero case when we have a bit width large enough such 1399 // that the bit width is larger than UINT32_MAX-1. 1400 APInt A9(UINT32_MAX, 0); 1401 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1402 } 1403 1404 TEST(APIntTest, IsSplat) { 1405 APInt A(32, 0x01010101); 1406 EXPECT_FALSE(A.isSplat(1)); 1407 EXPECT_FALSE(A.isSplat(2)); 1408 EXPECT_FALSE(A.isSplat(4)); 1409 EXPECT_TRUE(A.isSplat(8)); 1410 EXPECT_TRUE(A.isSplat(16)); 1411 EXPECT_TRUE(A.isSplat(32)); 1412 1413 APInt B(24, 0xAAAAAA); 1414 EXPECT_FALSE(B.isSplat(1)); 1415 EXPECT_TRUE(B.isSplat(2)); 1416 EXPECT_TRUE(B.isSplat(4)); 1417 EXPECT_TRUE(B.isSplat(8)); 1418 EXPECT_TRUE(B.isSplat(24)); 1419 1420 APInt C(24, 0xABAAAB); 1421 EXPECT_FALSE(C.isSplat(1)); 1422 EXPECT_FALSE(C.isSplat(2)); 1423 EXPECT_FALSE(C.isSplat(4)); 1424 EXPECT_FALSE(C.isSplat(8)); 1425 EXPECT_TRUE(C.isSplat(24)); 1426 1427 APInt D(32, 0xABBAABBA); 1428 EXPECT_FALSE(D.isSplat(1)); 1429 EXPECT_FALSE(D.isSplat(2)); 1430 EXPECT_FALSE(D.isSplat(4)); 1431 EXPECT_FALSE(D.isSplat(8)); 1432 EXPECT_TRUE(D.isSplat(16)); 1433 EXPECT_TRUE(D.isSplat(32)); 1434 1435 APInt E(32, 0); 1436 EXPECT_TRUE(E.isSplat(1)); 1437 EXPECT_TRUE(E.isSplat(2)); 1438 EXPECT_TRUE(E.isSplat(4)); 1439 EXPECT_TRUE(E.isSplat(8)); 1440 EXPECT_TRUE(E.isSplat(16)); 1441 EXPECT_TRUE(E.isSplat(32)); 1442 } 1443 1444 TEST(APIntTest, isMask) { 1445 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0x01010101))); 1446 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xf0000000))); 1447 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xffff0000))); 1448 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xff << 1))); 1449 1450 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1451 EXPECT_FALSE(APIntOps::isMask(APInt(N, 0))); 1452 1453 APInt One(N, 1); 1454 for (int I = 1; I <= N; ++I) { 1455 APInt MaskVal = One.shl(I) - 1; 1456 EXPECT_TRUE(APIntOps::isMask(MaskVal)); 1457 } 1458 } 1459 } 1460 1461 #if defined(__clang__) 1462 // Disable the pragma warning from versions of Clang without -Wself-move 1463 #pragma clang diagnostic push 1464 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1465 // Disable the warning that triggers on exactly what is being tested. 1466 #pragma clang diagnostic push 1467 #pragma clang diagnostic ignored "-Wself-move" 1468 #endif 1469 TEST(APIntTest, SelfMoveAssignment) { 1470 APInt X(32, 0xdeadbeef); 1471 X = std::move(X); 1472 EXPECT_EQ(32u, X.getBitWidth()); 1473 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1474 1475 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1476 APInt Y(128, Bits); 1477 Y = std::move(Y); 1478 EXPECT_EQ(128u, Y.getBitWidth()); 1479 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1480 const uint64_t *Raw = Y.getRawData(); 1481 EXPECT_EQ(2u, Y.getNumWords()); 1482 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1483 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1484 } 1485 #if defined(__clang__) 1486 #pragma clang diagnostic pop 1487 #pragma clang diagnostic pop 1488 #endif 1489 } 1490 1491 TEST(APIntTest, reverseBits) { 1492 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1493 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1494 1495 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1496 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1497 1498 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1499 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1500 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1501 1502 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1503 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1504 1505 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1506 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1507 1508 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1509 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1510 1511 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1512 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1513 1514 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1515 1516 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1517 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1518 1519 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1520 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1521 1522 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1523 63, 64, 65, 127, 128, 257, 1024 }) { 1524 for (unsigned I = 0; I < N; ++I) { 1525 APInt X = APInt::getOneBitSet(N, I); 1526 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1527 EXPECT_EQ(Y, X.reverseBits()); 1528 EXPECT_EQ(X, Y.reverseBits()); 1529 } 1530 } 1531 } 1532 1533 TEST(APIntTest, extractBits) { 1534 APInt i32(32, 0x1234567); 1535 EXPECT_EQ(0x3456, i32.extractBits(16, 4)); 1536 1537 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 1538 EXPECT_EQ(0xFFu, i257.extractBits(16, 0)); 1539 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1)); 1540 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue()); 1541 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue()); 1542 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue()); 1543 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 1544 i257.extractBits(128, 1).getSExtValue()); 1545 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 1546 i257.extractBits(129, 1).getSExtValue()); 1547 } 1548 1549 TEST(APIntTest, getLowBitsSet) { 1550 APInt i128lo64 = APInt::getLowBitsSet(128, 64); 1551 EXPECT_EQ(0u, i128lo64.countLeadingOnes()); 1552 EXPECT_EQ(64u, i128lo64.countLeadingZeros()); 1553 EXPECT_EQ(64u, i128lo64.getActiveBits()); 1554 EXPECT_EQ(0u, i128lo64.countTrailingZeros()); 1555 EXPECT_EQ(64u, i128lo64.countTrailingOnes()); 1556 EXPECT_EQ(64u, i128lo64.countPopulation()); 1557 } 1558 1559 TEST(APIntTest, getHighBitsSet) { 1560 APInt i64hi32 = APInt::getHighBitsSet(64, 32); 1561 EXPECT_EQ(32u, i64hi32.countLeadingOnes()); 1562 EXPECT_EQ(0u, i64hi32.countLeadingZeros()); 1563 EXPECT_EQ(64u, i64hi32.getActiveBits()); 1564 EXPECT_EQ(32u, i64hi32.countTrailingZeros()); 1565 EXPECT_EQ(0u, i64hi32.countTrailingOnes()); 1566 EXPECT_EQ(32u, i64hi32.countPopulation()); 1567 } 1568