1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ADT/APInt.h" 10 #include "llvm/ADT/ArrayRef.h" 11 #include "llvm/ADT/DenseMap.h" 12 #include "llvm/ADT/SmallString.h" 13 #include "llvm/ADT/Twine.h" 14 #include "gtest/gtest.h" 15 #include <array> 16 17 using namespace llvm; 18 19 namespace { 20 21 TEST(APIntTest, ValueInit) { 22 APInt Zero = APInt(); 23 EXPECT_TRUE(!Zero); 24 EXPECT_TRUE(!Zero.zext(64)); 25 EXPECT_TRUE(!Zero.sext(64)); 26 } 27 28 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 29 TEST(APIntTest, ShiftLeftByZero) { 30 APInt One = APInt::getZero(65) + 1; 31 APInt Shl = One.shl(0); 32 EXPECT_TRUE(Shl[0]); 33 EXPECT_FALSE(Shl[1]); 34 } 35 36 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 37 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 38 EXPECT_EQ(neg_one, neg_one.ashr(7)); 39 } 40 41 TEST(APIntTest, i128_NegativeCount) { 42 APInt Minus3(128, static_cast<uint64_t>(-3), true); 43 EXPECT_EQ(126u, Minus3.countLeadingOnes()); 44 EXPECT_EQ(-3, Minus3.getSExtValue()); 45 46 APInt Minus1(128, static_cast<uint64_t>(-1), true); 47 EXPECT_EQ(0u, Minus1.countLeadingZeros()); 48 EXPECT_EQ(128u, Minus1.countLeadingOnes()); 49 EXPECT_EQ(128u, Minus1.getActiveBits()); 50 EXPECT_EQ(0u, Minus1.countTrailingZeros()); 51 EXPECT_EQ(128u, Minus1.countTrailingOnes()); 52 EXPECT_EQ(128u, Minus1.countPopulation()); 53 EXPECT_EQ(-1, Minus1.getSExtValue()); 54 } 55 56 TEST(APIntTest, i33_Count) { 57 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 58 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 59 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 60 EXPECT_EQ(33u, i33minus2.getActiveBits()); 61 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 62 EXPECT_EQ(32u, i33minus2.countPopulation()); 63 EXPECT_EQ(-2, i33minus2.getSExtValue()); 64 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 65 } 66 67 TEST(APIntTest, i61_Count) { 68 APInt i61(61, 1 << 15); 69 EXPECT_EQ(45u, i61.countLeadingZeros()); 70 EXPECT_EQ(0u, i61.countLeadingOnes()); 71 EXPECT_EQ(16u, i61.getActiveBits()); 72 EXPECT_EQ(15u, i61.countTrailingZeros()); 73 EXPECT_EQ(1u, i61.countPopulation()); 74 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue()); 75 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue()); 76 77 i61.setBits(8, 19); 78 EXPECT_EQ(42u, i61.countLeadingZeros()); 79 EXPECT_EQ(0u, i61.countLeadingOnes()); 80 EXPECT_EQ(19u, i61.getActiveBits()); 81 EXPECT_EQ(8u, i61.countTrailingZeros()); 82 EXPECT_EQ(11u, i61.countPopulation()); 83 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue()); 84 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue()); 85 } 86 87 TEST(APIntTest, i65_Count) { 88 APInt i65(65, 0, true); 89 EXPECT_EQ(65u, i65.countLeadingZeros()); 90 EXPECT_EQ(0u, i65.countLeadingOnes()); 91 EXPECT_EQ(0u, i65.getActiveBits()); 92 EXPECT_EQ(1u, i65.getActiveWords()); 93 EXPECT_EQ(65u, i65.countTrailingZeros()); 94 EXPECT_EQ(0u, i65.countPopulation()); 95 96 APInt i65minus(65, 0, true); 97 i65minus.setBit(64); 98 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 99 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 100 EXPECT_EQ(65u, i65minus.getActiveBits()); 101 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 102 EXPECT_EQ(1u, i65minus.countPopulation()); 103 } 104 105 TEST(APIntTest, i128_PositiveCount) { 106 APInt u128max = APInt::getAllOnes(128); 107 EXPECT_EQ(128u, u128max.countLeadingOnes()); 108 EXPECT_EQ(0u, u128max.countLeadingZeros()); 109 EXPECT_EQ(128u, u128max.getActiveBits()); 110 EXPECT_EQ(0u, u128max.countTrailingZeros()); 111 EXPECT_EQ(128u, u128max.countTrailingOnes()); 112 EXPECT_EQ(128u, u128max.countPopulation()); 113 114 APInt u64max(128, static_cast<uint64_t>(-1), false); 115 EXPECT_EQ(64u, u64max.countLeadingZeros()); 116 EXPECT_EQ(0u, u64max.countLeadingOnes()); 117 EXPECT_EQ(64u, u64max.getActiveBits()); 118 EXPECT_EQ(0u, u64max.countTrailingZeros()); 119 EXPECT_EQ(64u, u64max.countTrailingOnes()); 120 EXPECT_EQ(64u, u64max.countPopulation()); 121 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 122 123 APInt zero(128, 0, true); 124 EXPECT_EQ(128u, zero.countLeadingZeros()); 125 EXPECT_EQ(0u, zero.countLeadingOnes()); 126 EXPECT_EQ(0u, zero.getActiveBits()); 127 EXPECT_EQ(128u, zero.countTrailingZeros()); 128 EXPECT_EQ(0u, zero.countTrailingOnes()); 129 EXPECT_EQ(0u, zero.countPopulation()); 130 EXPECT_EQ(0u, zero.getSExtValue()); 131 EXPECT_EQ(0u, zero.getZExtValue()); 132 133 APInt one(128, 1, true); 134 EXPECT_EQ(127u, one.countLeadingZeros()); 135 EXPECT_EQ(0u, one.countLeadingOnes()); 136 EXPECT_EQ(1u, one.getActiveBits()); 137 EXPECT_EQ(0u, one.countTrailingZeros()); 138 EXPECT_EQ(1u, one.countTrailingOnes()); 139 EXPECT_EQ(1u, one.countPopulation()); 140 EXPECT_EQ(1, one.getSExtValue()); 141 EXPECT_EQ(1u, one.getZExtValue()); 142 143 APInt s128(128, 2, true); 144 EXPECT_EQ(126u, s128.countLeadingZeros()); 145 EXPECT_EQ(0u, s128.countLeadingOnes()); 146 EXPECT_EQ(2u, s128.getActiveBits()); 147 EXPECT_EQ(1u, s128.countTrailingZeros()); 148 EXPECT_EQ(0u, s128.countTrailingOnes()); 149 EXPECT_EQ(1u, s128.countPopulation()); 150 EXPECT_EQ(2, s128.getSExtValue()); 151 EXPECT_EQ(2u, s128.getZExtValue()); 152 153 // NOP Test 154 s128.setBits(42, 42); 155 EXPECT_EQ(126u, s128.countLeadingZeros()); 156 EXPECT_EQ(0u, s128.countLeadingOnes()); 157 EXPECT_EQ(2u, s128.getActiveBits()); 158 EXPECT_EQ(1u, s128.countTrailingZeros()); 159 EXPECT_EQ(0u, s128.countTrailingOnes()); 160 EXPECT_EQ(1u, s128.countPopulation()); 161 EXPECT_EQ(2, s128.getSExtValue()); 162 EXPECT_EQ(2u, s128.getZExtValue()); 163 164 s128.setBits(3, 32); 165 EXPECT_EQ(96u, s128.countLeadingZeros()); 166 EXPECT_EQ(0u, s128.countLeadingOnes()); 167 EXPECT_EQ(32u, s128.getActiveBits()); 168 EXPECT_EQ(33u, s128.getMinSignedBits()); 169 EXPECT_EQ(1u, s128.countTrailingZeros()); 170 EXPECT_EQ(0u, s128.countTrailingOnes()); 171 EXPECT_EQ(30u, s128.countPopulation()); 172 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 173 174 s128.setBits(62, 128); 175 EXPECT_EQ(0u, s128.countLeadingZeros()); 176 EXPECT_EQ(66u, s128.countLeadingOnes()); 177 EXPECT_EQ(128u, s128.getActiveBits()); 178 EXPECT_EQ(63u, s128.getMinSignedBits()); 179 EXPECT_EQ(1u, s128.countTrailingZeros()); 180 EXPECT_EQ(0u, s128.countTrailingOnes()); 181 EXPECT_EQ(96u, s128.countPopulation()); 182 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 183 static_cast<uint32_t>((~0u << 3) | 2)), 184 s128.getSExtValue()); 185 } 186 187 TEST(APIntTest, i256) { 188 APInt s256(256, 15, true); 189 EXPECT_EQ(252u, s256.countLeadingZeros()); 190 EXPECT_EQ(0u, s256.countLeadingOnes()); 191 EXPECT_EQ(4u, s256.getActiveBits()); 192 EXPECT_EQ(0u, s256.countTrailingZeros()); 193 EXPECT_EQ(4u, s256.countTrailingOnes()); 194 EXPECT_EQ(4u, s256.countPopulation()); 195 EXPECT_EQ(15, s256.getSExtValue()); 196 EXPECT_EQ(15u, s256.getZExtValue()); 197 198 s256.setBits(62, 66); 199 EXPECT_EQ(190u, s256.countLeadingZeros()); 200 EXPECT_EQ(0u, s256.countLeadingOnes()); 201 EXPECT_EQ(66u, s256.getActiveBits()); 202 EXPECT_EQ(67u, s256.getMinSignedBits()); 203 EXPECT_EQ(0u, s256.countTrailingZeros()); 204 EXPECT_EQ(4u, s256.countTrailingOnes()); 205 EXPECT_EQ(8u, s256.countPopulation()); 206 207 s256.setBits(60, 256); 208 EXPECT_EQ(0u, s256.countLeadingZeros()); 209 EXPECT_EQ(196u, s256.countLeadingOnes()); 210 EXPECT_EQ(256u, s256.getActiveBits()); 211 EXPECT_EQ(61u, s256.getMinSignedBits()); 212 EXPECT_EQ(0u, s256.countTrailingZeros()); 213 EXPECT_EQ(4u, s256.countTrailingOnes()); 214 EXPECT_EQ(200u, s256.countPopulation()); 215 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 216 } 217 218 TEST(APIntTest, i1) { 219 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 220 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 221 const APInt zero(1, 0); 222 const APInt one(1, 1); 223 const APInt two(1, 2); 224 225 EXPECT_EQ(0, neg_two.getSExtValue()); 226 EXPECT_EQ(-1, neg_one.getSExtValue()); 227 EXPECT_EQ(1u, neg_one.getZExtValue()); 228 EXPECT_EQ(0u, zero.getZExtValue()); 229 EXPECT_EQ(-1, one.getSExtValue()); 230 EXPECT_EQ(1u, one.getZExtValue()); 231 EXPECT_EQ(0u, two.getZExtValue()); 232 EXPECT_EQ(0, two.getSExtValue()); 233 234 // Basic equalities for 1-bit values. 235 EXPECT_EQ(zero, two); 236 EXPECT_EQ(zero, neg_two); 237 EXPECT_EQ(one, neg_one); 238 EXPECT_EQ(two, neg_two); 239 240 // Min/max signed values. 241 EXPECT_TRUE(zero.isMaxSignedValue()); 242 EXPECT_FALSE(one.isMaxSignedValue()); 243 EXPECT_FALSE(zero.isMinSignedValue()); 244 EXPECT_TRUE(one.isMinSignedValue()); 245 246 // Additions. 247 EXPECT_EQ(two, one + one); 248 EXPECT_EQ(zero, neg_one + one); 249 EXPECT_EQ(neg_two, neg_one + neg_one); 250 251 // Subtractions. 252 EXPECT_EQ(neg_two, neg_one - one); 253 EXPECT_EQ(two, one - neg_one); 254 EXPECT_EQ(zero, one - one); 255 256 // And 257 EXPECT_EQ(zero, zero & zero); 258 EXPECT_EQ(zero, one & zero); 259 EXPECT_EQ(zero, zero & one); 260 EXPECT_EQ(one, one & one); 261 EXPECT_EQ(zero, zero & zero); 262 EXPECT_EQ(zero, neg_one & zero); 263 EXPECT_EQ(zero, zero & neg_one); 264 EXPECT_EQ(neg_one, neg_one & neg_one); 265 266 // Or 267 EXPECT_EQ(zero, zero | zero); 268 EXPECT_EQ(one, one | zero); 269 EXPECT_EQ(one, zero | one); 270 EXPECT_EQ(one, one | one); 271 EXPECT_EQ(zero, zero | zero); 272 EXPECT_EQ(neg_one, neg_one | zero); 273 EXPECT_EQ(neg_one, zero | neg_one); 274 EXPECT_EQ(neg_one, neg_one | neg_one); 275 276 // Xor 277 EXPECT_EQ(zero, zero ^ zero); 278 EXPECT_EQ(one, one ^ zero); 279 EXPECT_EQ(one, zero ^ one); 280 EXPECT_EQ(zero, one ^ one); 281 EXPECT_EQ(zero, zero ^ zero); 282 EXPECT_EQ(neg_one, neg_one ^ zero); 283 EXPECT_EQ(neg_one, zero ^ neg_one); 284 EXPECT_EQ(zero, neg_one ^ neg_one); 285 286 // Shifts. 287 EXPECT_EQ(zero, one << one); 288 EXPECT_EQ(one, one << zero); 289 EXPECT_EQ(zero, one.shl(1)); 290 EXPECT_EQ(one, one.shl(0)); 291 EXPECT_EQ(zero, one.lshr(1)); 292 EXPECT_EQ(one, one.ashr(1)); 293 294 // Rotates. 295 EXPECT_EQ(one, one.rotl(0)); 296 EXPECT_EQ(one, one.rotl(1)); 297 EXPECT_EQ(one, one.rotr(0)); 298 EXPECT_EQ(one, one.rotr(1)); 299 300 // Multiplies. 301 EXPECT_EQ(neg_one, neg_one * one); 302 EXPECT_EQ(neg_one, one * neg_one); 303 EXPECT_EQ(one, neg_one * neg_one); 304 EXPECT_EQ(one, one * one); 305 306 // Divides. 307 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 308 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 309 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 310 EXPECT_EQ(one, one.sdiv(one)); 311 312 EXPECT_EQ(neg_one, one.udiv(neg_one)); 313 EXPECT_EQ(neg_one, neg_one.udiv(one)); 314 EXPECT_EQ(one, neg_one.udiv(neg_one)); 315 EXPECT_EQ(one, one.udiv(one)); 316 317 // Remainders. 318 EXPECT_EQ(zero, neg_one.srem(one)); 319 EXPECT_EQ(zero, neg_one.urem(one)); 320 EXPECT_EQ(zero, one.srem(neg_one)); 321 322 // sdivrem 323 { 324 APInt q(8, 0); 325 APInt r(8, 0); 326 APInt one(8, 1); 327 APInt two(8, 2); 328 APInt nine(8, 9); 329 APInt four(8, 4); 330 331 EXPECT_EQ(nine.srem(two), one); 332 EXPECT_EQ(nine.srem(-two), one); 333 EXPECT_EQ((-nine).srem(two), -one); 334 EXPECT_EQ((-nine).srem(-two), -one); 335 336 APInt::sdivrem(nine, two, q, r); 337 EXPECT_EQ(four, q); 338 EXPECT_EQ(one, r); 339 APInt::sdivrem(-nine, two, q, r); 340 EXPECT_EQ(-four, q); 341 EXPECT_EQ(-one, r); 342 APInt::sdivrem(nine, -two, q, r); 343 EXPECT_EQ(-four, q); 344 EXPECT_EQ(one, r); 345 APInt::sdivrem(-nine, -two, q, r); 346 EXPECT_EQ(four, q); 347 EXPECT_EQ(-one, r); 348 } 349 } 350 351 TEST(APIntTest, compare) { 352 std::array<APInt, 5> testVals{{ 353 APInt{16, 2}, 354 APInt{16, 1}, 355 APInt{16, 0}, 356 APInt{16, (uint64_t)-1, true}, 357 APInt{16, (uint64_t)-2, true}, 358 }}; 359 360 for (auto &arg1 : testVals) 361 for (auto &arg2 : testVals) { 362 auto uv1 = arg1.getZExtValue(); 363 auto uv2 = arg2.getZExtValue(); 364 auto sv1 = arg1.getSExtValue(); 365 auto sv2 = arg2.getSExtValue(); 366 367 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 368 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 369 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 370 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 371 372 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 373 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 374 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 375 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 376 377 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 378 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 379 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 380 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 381 382 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 383 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 384 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 385 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 386 } 387 } 388 389 TEST(APIntTest, compareWithRawIntegers) { 390 EXPECT_TRUE(!APInt(8, 1).uge(256)); 391 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 392 EXPECT_TRUE( APInt(8, 1).ule(256)); 393 EXPECT_TRUE( APInt(8, 1).ult(256)); 394 EXPECT_TRUE(!APInt(8, 1).sge(256)); 395 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 396 EXPECT_TRUE( APInt(8, 1).sle(256)); 397 EXPECT_TRUE( APInt(8, 1).slt(256)); 398 EXPECT_TRUE(!(APInt(8, 0) == 256)); 399 EXPECT_TRUE( APInt(8, 0) != 256); 400 EXPECT_TRUE(!(APInt(8, 1) == 256)); 401 EXPECT_TRUE( APInt(8, 1) != 256); 402 403 auto uint64max = UINT64_MAX; 404 auto int64max = INT64_MAX; 405 auto int64min = INT64_MIN; 406 407 auto u64 = APInt{128, uint64max}; 408 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 409 auto big = u64 + 1; 410 411 EXPECT_TRUE( u64.uge(uint64max)); 412 EXPECT_TRUE(!u64.ugt(uint64max)); 413 EXPECT_TRUE( u64.ule(uint64max)); 414 EXPECT_TRUE(!u64.ult(uint64max)); 415 EXPECT_TRUE( u64.sge(int64max)); 416 EXPECT_TRUE( u64.sgt(int64max)); 417 EXPECT_TRUE(!u64.sle(int64max)); 418 EXPECT_TRUE(!u64.slt(int64max)); 419 EXPECT_TRUE( u64.sge(int64min)); 420 EXPECT_TRUE( u64.sgt(int64min)); 421 EXPECT_TRUE(!u64.sle(int64min)); 422 EXPECT_TRUE(!u64.slt(int64min)); 423 424 EXPECT_TRUE(u64 == uint64max); 425 EXPECT_TRUE(u64 != int64max); 426 EXPECT_TRUE(u64 != int64min); 427 428 EXPECT_TRUE(!s64.uge(uint64max)); 429 EXPECT_TRUE(!s64.ugt(uint64max)); 430 EXPECT_TRUE( s64.ule(uint64max)); 431 EXPECT_TRUE( s64.ult(uint64max)); 432 EXPECT_TRUE( s64.sge(int64max)); 433 EXPECT_TRUE(!s64.sgt(int64max)); 434 EXPECT_TRUE( s64.sle(int64max)); 435 EXPECT_TRUE(!s64.slt(int64max)); 436 EXPECT_TRUE( s64.sge(int64min)); 437 EXPECT_TRUE( s64.sgt(int64min)); 438 EXPECT_TRUE(!s64.sle(int64min)); 439 EXPECT_TRUE(!s64.slt(int64min)); 440 441 EXPECT_TRUE(s64 != uint64max); 442 EXPECT_TRUE(s64 == int64max); 443 EXPECT_TRUE(s64 != int64min); 444 445 EXPECT_TRUE( big.uge(uint64max)); 446 EXPECT_TRUE( big.ugt(uint64max)); 447 EXPECT_TRUE(!big.ule(uint64max)); 448 EXPECT_TRUE(!big.ult(uint64max)); 449 EXPECT_TRUE( big.sge(int64max)); 450 EXPECT_TRUE( big.sgt(int64max)); 451 EXPECT_TRUE(!big.sle(int64max)); 452 EXPECT_TRUE(!big.slt(int64max)); 453 EXPECT_TRUE( big.sge(int64min)); 454 EXPECT_TRUE( big.sgt(int64min)); 455 EXPECT_TRUE(!big.sle(int64min)); 456 EXPECT_TRUE(!big.slt(int64min)); 457 458 EXPECT_TRUE(big != uint64max); 459 EXPECT_TRUE(big != int64max); 460 EXPECT_TRUE(big != int64min); 461 } 462 463 TEST(APIntTest, compareWithInt64Min) { 464 int64_t edge = INT64_MIN; 465 int64_t edgeP1 = edge + 1; 466 int64_t edgeM1 = INT64_MAX; 467 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 468 469 EXPECT_TRUE(!a.slt(edge)); 470 EXPECT_TRUE( a.sle(edge)); 471 EXPECT_TRUE(!a.sgt(edge)); 472 EXPECT_TRUE( a.sge(edge)); 473 EXPECT_TRUE( a.slt(edgeP1)); 474 EXPECT_TRUE( a.sle(edgeP1)); 475 EXPECT_TRUE(!a.sgt(edgeP1)); 476 EXPECT_TRUE(!a.sge(edgeP1)); 477 EXPECT_TRUE( a.slt(edgeM1)); 478 EXPECT_TRUE( a.sle(edgeM1)); 479 EXPECT_TRUE(!a.sgt(edgeM1)); 480 EXPECT_TRUE(!a.sge(edgeM1)); 481 } 482 483 TEST(APIntTest, compareWithHalfInt64Max) { 484 uint64_t edge = 0x4000000000000000; 485 uint64_t edgeP1 = edge + 1; 486 uint64_t edgeM1 = edge - 1; 487 auto a = APInt{64, edge}; 488 489 EXPECT_TRUE(!a.ult(edge)); 490 EXPECT_TRUE( a.ule(edge)); 491 EXPECT_TRUE(!a.ugt(edge)); 492 EXPECT_TRUE( a.uge(edge)); 493 EXPECT_TRUE( a.ult(edgeP1)); 494 EXPECT_TRUE( a.ule(edgeP1)); 495 EXPECT_TRUE(!a.ugt(edgeP1)); 496 EXPECT_TRUE(!a.uge(edgeP1)); 497 EXPECT_TRUE(!a.ult(edgeM1)); 498 EXPECT_TRUE(!a.ule(edgeM1)); 499 EXPECT_TRUE( a.ugt(edgeM1)); 500 EXPECT_TRUE( a.uge(edgeM1)); 501 502 EXPECT_TRUE(!a.slt(edge)); 503 EXPECT_TRUE( a.sle(edge)); 504 EXPECT_TRUE(!a.sgt(edge)); 505 EXPECT_TRUE( a.sge(edge)); 506 EXPECT_TRUE( a.slt(edgeP1)); 507 EXPECT_TRUE( a.sle(edgeP1)); 508 EXPECT_TRUE(!a.sgt(edgeP1)); 509 EXPECT_TRUE(!a.sge(edgeP1)); 510 EXPECT_TRUE(!a.slt(edgeM1)); 511 EXPECT_TRUE(!a.sle(edgeM1)); 512 EXPECT_TRUE( a.sgt(edgeM1)); 513 EXPECT_TRUE( a.sge(edgeM1)); 514 } 515 516 TEST(APIntTest, compareLargeIntegers) { 517 // Make sure all the combinations of signed comparisons work with big ints. 518 auto One = APInt{128, static_cast<uint64_t>(1), true}; 519 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 520 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 521 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 522 523 EXPECT_TRUE(!One.slt(One)); 524 EXPECT_TRUE(!Two.slt(One)); 525 EXPECT_TRUE(MinusOne.slt(One)); 526 EXPECT_TRUE(MinusTwo.slt(One)); 527 528 EXPECT_TRUE(One.slt(Two)); 529 EXPECT_TRUE(!Two.slt(Two)); 530 EXPECT_TRUE(MinusOne.slt(Two)); 531 EXPECT_TRUE(MinusTwo.slt(Two)); 532 533 EXPECT_TRUE(!One.slt(MinusOne)); 534 EXPECT_TRUE(!Two.slt(MinusOne)); 535 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 536 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 537 538 EXPECT_TRUE(!One.slt(MinusTwo)); 539 EXPECT_TRUE(!Two.slt(MinusTwo)); 540 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 541 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 542 } 543 544 TEST(APIntTest, binaryOpsWithRawIntegers) { 545 // Single word check. 546 uint64_t E1 = 0x2CA7F46BF6569915ULL; 547 APInt A1(64, E1); 548 549 EXPECT_EQ(A1 & E1, E1); 550 EXPECT_EQ(A1 & 0, 0); 551 EXPECT_EQ(A1 & 1, 1); 552 EXPECT_EQ(A1 & 5, 5); 553 EXPECT_EQ(A1 & UINT64_MAX, E1); 554 555 EXPECT_EQ(A1 | E1, E1); 556 EXPECT_EQ(A1 | 0, E1); 557 EXPECT_EQ(A1 | 1, E1); 558 EXPECT_EQ(A1 | 2, E1 | 2); 559 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 560 561 EXPECT_EQ(A1 ^ E1, 0); 562 EXPECT_EQ(A1 ^ 0, E1); 563 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 564 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 565 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 566 567 // Multiword check. 568 uint64_t N = 0xEB6EB136591CBA21ULL; 569 APInt::WordType E2[4] = { 570 N, 571 0x7B9358BD6A33F10AULL, 572 0x7E7FFA5EADD8846ULL, 573 0x305F341CA00B613DULL 574 }; 575 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 576 577 EXPECT_EQ(A2 & N, N); 578 EXPECT_EQ(A2 & 0, 0); 579 EXPECT_EQ(A2 & 1, 1); 580 EXPECT_EQ(A2 & 5, 1); 581 EXPECT_EQ(A2 & UINT64_MAX, N); 582 583 EXPECT_EQ(A2 | N, A2); 584 EXPECT_EQ(A2 | 0, A2); 585 EXPECT_EQ(A2 | 1, A2); 586 EXPECT_EQ(A2 | 2, A2 + 2); 587 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 588 589 EXPECT_EQ(A2 ^ N, A2 - N); 590 EXPECT_EQ(A2 ^ 0, A2); 591 EXPECT_EQ(A2 ^ 1, A2 - 1); 592 EXPECT_EQ(A2 ^ 7, A2 + 5); 593 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 594 } 595 596 TEST(APIntTest, rvalue_arithmetic) { 597 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 598 599 // Lamdba to return an APInt by value, but also provide the raw value of the 600 // allocated data. 601 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 602 APInt V(129, HexString, 16); 603 RawData = V.getRawData(); 604 return V; 605 }; 606 607 APInt One(129, "1", 16); 608 APInt Two(129, "2", 16); 609 APInt Three(129, "3", 16); 610 APInt MinusOne = -One; 611 612 const uint64_t *RawDataL = nullptr; 613 const uint64_t *RawDataR = nullptr; 614 615 { 616 // 1 + 1 = 2 617 APInt AddLL = One + One; 618 EXPECT_EQ(AddLL, Two); 619 620 APInt AddLR = One + getRValue("1", RawDataR); 621 EXPECT_EQ(AddLR, Two); 622 EXPECT_EQ(AddLR.getRawData(), RawDataR); 623 624 APInt AddRL = getRValue("1", RawDataL) + One; 625 EXPECT_EQ(AddRL, Two); 626 EXPECT_EQ(AddRL.getRawData(), RawDataL); 627 628 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 629 EXPECT_EQ(AddRR, Two); 630 EXPECT_EQ(AddRR.getRawData(), RawDataR); 631 632 // LValue's and constants 633 APInt AddLK = One + 1; 634 EXPECT_EQ(AddLK, Two); 635 636 APInt AddKL = 1 + One; 637 EXPECT_EQ(AddKL, Two); 638 639 // RValue's and constants 640 APInt AddRK = getRValue("1", RawDataL) + 1; 641 EXPECT_EQ(AddRK, Two); 642 EXPECT_EQ(AddRK.getRawData(), RawDataL); 643 644 APInt AddKR = 1 + getRValue("1", RawDataR); 645 EXPECT_EQ(AddKR, Two); 646 EXPECT_EQ(AddKR.getRawData(), RawDataR); 647 } 648 649 { 650 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 651 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 652 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 653 654 APInt AddLL = AllOnes + Two; 655 EXPECT_EQ(AddLL, HighOneLowOne); 656 657 APInt AddLR = AllOnes + getRValue("2", RawDataR); 658 EXPECT_EQ(AddLR, HighOneLowOne); 659 EXPECT_EQ(AddLR.getRawData(), RawDataR); 660 661 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 662 EXPECT_EQ(AddRL, HighOneLowOne); 663 EXPECT_EQ(AddRL.getRawData(), RawDataL); 664 665 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 666 getRValue("2", RawDataR); 667 EXPECT_EQ(AddRR, HighOneLowOne); 668 EXPECT_EQ(AddRR.getRawData(), RawDataR); 669 670 // LValue's and constants 671 APInt AddLK = AllOnes + 2; 672 EXPECT_EQ(AddLK, HighOneLowOne); 673 674 APInt AddKL = 2 + AllOnes; 675 EXPECT_EQ(AddKL, HighOneLowOne); 676 677 // RValue's and constants 678 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 679 EXPECT_EQ(AddRK, HighOneLowOne); 680 EXPECT_EQ(AddRK.getRawData(), RawDataL); 681 682 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 683 EXPECT_EQ(AddKR, HighOneLowOne); 684 EXPECT_EQ(AddKR.getRawData(), RawDataR); 685 } 686 687 { 688 // 2 - 1 = 1 689 APInt SubLL = Two - One; 690 EXPECT_EQ(SubLL, One); 691 692 APInt SubLR = Two - getRValue("1", RawDataR); 693 EXPECT_EQ(SubLR, One); 694 EXPECT_EQ(SubLR.getRawData(), RawDataR); 695 696 APInt SubRL = getRValue("2", RawDataL) - One; 697 EXPECT_EQ(SubRL, One); 698 EXPECT_EQ(SubRL.getRawData(), RawDataL); 699 700 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 701 EXPECT_EQ(SubRR, One); 702 EXPECT_EQ(SubRR.getRawData(), RawDataR); 703 704 // LValue's and constants 705 APInt SubLK = Two - 1; 706 EXPECT_EQ(SubLK, One); 707 708 APInt SubKL = 2 - One; 709 EXPECT_EQ(SubKL, One); 710 711 // RValue's and constants 712 APInt SubRK = getRValue("2", RawDataL) - 1; 713 EXPECT_EQ(SubRK, One); 714 EXPECT_EQ(SubRK.getRawData(), RawDataL); 715 716 APInt SubKR = 2 - getRValue("1", RawDataR); 717 EXPECT_EQ(SubKR, One); 718 EXPECT_EQ(SubKR.getRawData(), RawDataR); 719 } 720 721 { 722 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 723 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 724 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 725 726 APInt SubLL = HighOneLowOne - AllOnes; 727 EXPECT_EQ(SubLL, Two); 728 729 APInt SubLR = HighOneLowOne - 730 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 731 EXPECT_EQ(SubLR, Two); 732 EXPECT_EQ(SubLR.getRawData(), RawDataR); 733 734 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 735 AllOnes; 736 EXPECT_EQ(SubRL, Two); 737 EXPECT_EQ(SubRL.getRawData(), RawDataL); 738 739 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 740 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 741 EXPECT_EQ(SubRR, Two); 742 EXPECT_EQ(SubRR.getRawData(), RawDataR); 743 744 // LValue's and constants 745 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 746 APInt SubLK = HighOneLowOne - 2; 747 EXPECT_EQ(SubLK, AllOnes); 748 749 // 2 - (-1) = 3 750 APInt SubKL = 2 - MinusOne; 751 EXPECT_EQ(SubKL, Three); 752 753 // RValue's and constants 754 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 755 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 756 EXPECT_EQ(SubRK, AllOnes); 757 EXPECT_EQ(SubRK.getRawData(), RawDataL); 758 759 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 760 EXPECT_EQ(SubKR, Three); 761 EXPECT_EQ(SubKR.getRawData(), RawDataR); 762 } 763 } 764 765 TEST(APIntTest, rvalue_bitwise) { 766 // Test all combinations of lvalue/rvalue lhs/rhs of and/or/xor 767 768 // Lamdba to return an APInt by value, but also provide the raw value of the 769 // allocated data. 770 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 771 APInt V(129, HexString, 16); 772 RawData = V.getRawData(); 773 return V; 774 }; 775 776 APInt Ten(129, "A", 16); 777 APInt Twelve(129, "C", 16); 778 779 const uint64_t *RawDataL = nullptr; 780 const uint64_t *RawDataR = nullptr; 781 782 { 783 // 12 & 10 = 8 784 APInt AndLL = Ten & Twelve; 785 EXPECT_EQ(AndLL, 0x8); 786 787 APInt AndLR = Ten & getRValue("C", RawDataR); 788 EXPECT_EQ(AndLR, 0x8); 789 EXPECT_EQ(AndLR.getRawData(), RawDataR); 790 791 APInt AndRL = getRValue("A", RawDataL) & Twelve; 792 EXPECT_EQ(AndRL, 0x8); 793 EXPECT_EQ(AndRL.getRawData(), RawDataL); 794 795 APInt AndRR = getRValue("A", RawDataL) & getRValue("C", RawDataR); 796 EXPECT_EQ(AndRR, 0x8); 797 EXPECT_EQ(AndRR.getRawData(), RawDataR); 798 799 // LValue's and constants 800 APInt AndLK = Ten & 0xc; 801 EXPECT_EQ(AndLK, 0x8); 802 803 APInt AndKL = 0xa & Twelve; 804 EXPECT_EQ(AndKL, 0x8); 805 806 // RValue's and constants 807 APInt AndRK = getRValue("A", RawDataL) & 0xc; 808 EXPECT_EQ(AndRK, 0x8); 809 EXPECT_EQ(AndRK.getRawData(), RawDataL); 810 811 APInt AndKR = 0xa & getRValue("C", RawDataR); 812 EXPECT_EQ(AndKR, 0x8); 813 EXPECT_EQ(AndKR.getRawData(), RawDataR); 814 } 815 816 { 817 // 12 | 10 = 14 818 APInt OrLL = Ten | Twelve; 819 EXPECT_EQ(OrLL, 0xe); 820 821 APInt OrLR = Ten | getRValue("C", RawDataR); 822 EXPECT_EQ(OrLR, 0xe); 823 EXPECT_EQ(OrLR.getRawData(), RawDataR); 824 825 APInt OrRL = getRValue("A", RawDataL) | Twelve; 826 EXPECT_EQ(OrRL, 0xe); 827 EXPECT_EQ(OrRL.getRawData(), RawDataL); 828 829 APInt OrRR = getRValue("A", RawDataL) | getRValue("C", RawDataR); 830 EXPECT_EQ(OrRR, 0xe); 831 EXPECT_EQ(OrRR.getRawData(), RawDataR); 832 833 // LValue's and constants 834 APInt OrLK = Ten | 0xc; 835 EXPECT_EQ(OrLK, 0xe); 836 837 APInt OrKL = 0xa | Twelve; 838 EXPECT_EQ(OrKL, 0xe); 839 840 // RValue's and constants 841 APInt OrRK = getRValue("A", RawDataL) | 0xc; 842 EXPECT_EQ(OrRK, 0xe); 843 EXPECT_EQ(OrRK.getRawData(), RawDataL); 844 845 APInt OrKR = 0xa | getRValue("C", RawDataR); 846 EXPECT_EQ(OrKR, 0xe); 847 EXPECT_EQ(OrKR.getRawData(), RawDataR); 848 } 849 850 { 851 // 12 ^ 10 = 6 852 APInt XorLL = Ten ^ Twelve; 853 EXPECT_EQ(XorLL, 0x6); 854 855 APInt XorLR = Ten ^ getRValue("C", RawDataR); 856 EXPECT_EQ(XorLR, 0x6); 857 EXPECT_EQ(XorLR.getRawData(), RawDataR); 858 859 APInt XorRL = getRValue("A", RawDataL) ^ Twelve; 860 EXPECT_EQ(XorRL, 0x6); 861 EXPECT_EQ(XorRL.getRawData(), RawDataL); 862 863 APInt XorRR = getRValue("A", RawDataL) ^ getRValue("C", RawDataR); 864 EXPECT_EQ(XorRR, 0x6); 865 EXPECT_EQ(XorRR.getRawData(), RawDataR); 866 867 // LValue's and constants 868 APInt XorLK = Ten ^ 0xc; 869 EXPECT_EQ(XorLK, 0x6); 870 871 APInt XorKL = 0xa ^ Twelve; 872 EXPECT_EQ(XorKL, 0x6); 873 874 // RValue's and constants 875 APInt XorRK = getRValue("A", RawDataL) ^ 0xc; 876 EXPECT_EQ(XorRK, 0x6); 877 EXPECT_EQ(XorRK.getRawData(), RawDataL); 878 879 APInt XorKR = 0xa ^ getRValue("C", RawDataR); 880 EXPECT_EQ(XorKR, 0x6); 881 EXPECT_EQ(XorKR.getRawData(), RawDataR); 882 } 883 } 884 885 TEST(APIntTest, rvalue_invert) { 886 // Lamdba to return an APInt by value, but also provide the raw value of the 887 // allocated data. 888 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 889 APInt V(129, HexString, 16); 890 RawData = V.getRawData(); 891 return V; 892 }; 893 894 APInt One(129, 1); 895 APInt NegativeTwo(129, -2ULL, true); 896 897 const uint64_t *RawData = nullptr; 898 899 { 900 // ~1 = -2 901 APInt NegL = ~One; 902 EXPECT_EQ(NegL, NegativeTwo); 903 904 APInt NegR = ~getRValue("1", RawData); 905 EXPECT_EQ(NegR, NegativeTwo); 906 EXPECT_EQ(NegR.getRawData(), RawData); 907 } 908 } 909 910 // Tests different div/rem varaints using scheme (a * b + c) / a 911 void testDiv(APInt a, APInt b, APInt c) { 912 ASSERT_TRUE(a.uge(b)); // Must: a >= b 913 ASSERT_TRUE(a.ugt(c)); // Must: a > c 914 915 auto p = a * b + c; 916 917 auto q = p.udiv(a); 918 auto r = p.urem(a); 919 EXPECT_EQ(b, q); 920 EXPECT_EQ(c, r); 921 APInt::udivrem(p, a, q, r); 922 EXPECT_EQ(b, q); 923 EXPECT_EQ(c, r); 924 q = p.sdiv(a); 925 r = p.srem(a); 926 EXPECT_EQ(b, q); 927 EXPECT_EQ(c, r); 928 APInt::sdivrem(p, a, q, r); 929 EXPECT_EQ(b, q); 930 EXPECT_EQ(c, r); 931 932 if (b.ugt(c)) { // Test also symmetric case 933 q = p.udiv(b); 934 r = p.urem(b); 935 EXPECT_EQ(a, q); 936 EXPECT_EQ(c, r); 937 APInt::udivrem(p, b, q, r); 938 EXPECT_EQ(a, q); 939 EXPECT_EQ(c, r); 940 q = p.sdiv(b); 941 r = p.srem(b); 942 EXPECT_EQ(a, q); 943 EXPECT_EQ(c, r); 944 APInt::sdivrem(p, b, q, r); 945 EXPECT_EQ(a, q); 946 EXPECT_EQ(c, r); 947 } 948 } 949 950 TEST(APIntTest, divrem_big1) { 951 // Tests KnuthDiv rare step D6 952 testDiv({256, "1ffffffffffffffff", 16}, 953 {256, "1ffffffffffffffff", 16}, 954 {256, 0}); 955 } 956 957 TEST(APIntTest, divrem_big2) { 958 // Tests KnuthDiv rare step D6 959 testDiv({1024, "112233ceff" 960 "cecece000000ffffffffffffffffffff" 961 "ffffffffffffffffffffffffffffffff" 962 "ffffffffffffffffffffffffffffffff" 963 "ffffffffffffffffffffffffffffff33", 16}, 964 {1024, "111111ffffffffffffffff" 965 "ffffffffffffffffffffffffffffffff" 966 "fffffffffffffffffffffffffffffccf" 967 "ffffffffffffffffffffffffffffff00", 16}, 968 {1024, 7919}); 969 } 970 971 TEST(APIntTest, divrem_big3) { 972 // Tests KnuthDiv case without shift 973 testDiv({256, "80000001ffffffffffffffff", 16}, 974 {256, "ffffffffffffff0000000", 16}, 975 {256, 4219}); 976 } 977 978 TEST(APIntTest, divrem_big4) { 979 // Tests heap allocation in divide() enfoced by huge numbers 980 testDiv(APInt{4096, 5}.shl(2001), 981 APInt{4096, 1}.shl(2000), 982 APInt{4096, 4219*13}); 983 } 984 985 TEST(APIntTest, divrem_big5) { 986 // Tests one word divisor case of divide() 987 testDiv(APInt{1024, 19}.shl(811), 988 APInt{1024, 4356013}, // one word 989 APInt{1024, 1}); 990 } 991 992 TEST(APIntTest, divrem_big6) { 993 // Tests some rare "borrow" cases in D4 step 994 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 995 APInt{512, "10000000000000001000000000000001", 16}, 996 APInt{512, "10000000000000000000000000000000", 16}); 997 } 998 999 TEST(APIntTest, divrem_big7) { 1000 // Yet another test for KnuthDiv rare step D6. 1001 testDiv({224, "800000008000000200000005", 16}, 1002 {224, "fffffffd", 16}, 1003 {224, "80000000800000010000000f", 16}); 1004 } 1005 1006 void testDiv(APInt a, uint64_t b, APInt c) { 1007 auto p = a * b + c; 1008 1009 APInt q; 1010 uint64_t r; 1011 // Unsigned division will only work if our original number wasn't negative. 1012 if (!a.isNegative()) { 1013 q = p.udiv(b); 1014 r = p.urem(b); 1015 EXPECT_EQ(a, q); 1016 EXPECT_EQ(c, r); 1017 APInt::udivrem(p, b, q, r); 1018 EXPECT_EQ(a, q); 1019 EXPECT_EQ(c, r); 1020 } 1021 q = p.sdiv(b); 1022 r = p.srem(b); 1023 EXPECT_EQ(a, q); 1024 if (c.isNegative()) 1025 EXPECT_EQ(-c, -r); // Need to negate so the uint64_t compare will work. 1026 else 1027 EXPECT_EQ(c, r); 1028 int64_t sr; 1029 APInt::sdivrem(p, b, q, sr); 1030 EXPECT_EQ(a, q); 1031 if (c.isNegative()) 1032 EXPECT_EQ(-c, -sr); // Need to negate so the uint64_t compare will work. 1033 else 1034 EXPECT_EQ(c, sr); 1035 } 1036 1037 TEST(APIntTest, divremuint) { 1038 // Single word APInt 1039 testDiv(APInt{64, 9}, 1040 2, 1041 APInt{64, 1}); 1042 1043 // Single word negative APInt 1044 testDiv(-APInt{64, 9}, 1045 2, 1046 -APInt{64, 1}); 1047 1048 // Multiword dividend with only one significant word. 1049 testDiv(APInt{256, 9}, 1050 2, 1051 APInt{256, 1}); 1052 1053 // Negative dividend. 1054 testDiv(-APInt{256, 9}, 1055 2, 1056 -APInt{256, 1}); 1057 1058 // Multiword dividend 1059 testDiv(APInt{1024, 19}.shl(811), 1060 4356013, // one word 1061 APInt{1024, 1}); 1062 } 1063 1064 TEST(APIntTest, divrem_simple) { 1065 // Test simple cases. 1066 APInt A(65, 2), B(65, 2); 1067 APInt Q, R; 1068 1069 // X / X 1070 APInt::sdivrem(A, B, Q, R); 1071 EXPECT_EQ(Q, APInt(65, 1)); 1072 EXPECT_EQ(R, APInt(65, 0)); 1073 APInt::udivrem(A, B, Q, R); 1074 EXPECT_EQ(Q, APInt(65, 1)); 1075 EXPECT_EQ(R, APInt(65, 0)); 1076 1077 // 0 / X 1078 APInt O(65, 0); 1079 APInt::sdivrem(O, B, Q, R); 1080 EXPECT_EQ(Q, APInt(65, 0)); 1081 EXPECT_EQ(R, APInt(65, 0)); 1082 APInt::udivrem(O, B, Q, R); 1083 EXPECT_EQ(Q, APInt(65, 0)); 1084 EXPECT_EQ(R, APInt(65, 0)); 1085 1086 // X / 1 1087 APInt I(65, 1); 1088 APInt::sdivrem(A, I, Q, R); 1089 EXPECT_EQ(Q, A); 1090 EXPECT_EQ(R, APInt(65, 0)); 1091 APInt::udivrem(A, I, Q, R); 1092 EXPECT_EQ(Q, A); 1093 EXPECT_EQ(R, APInt(65, 0)); 1094 } 1095 1096 TEST(APIntTest, fromString) { 1097 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 1098 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 1099 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 1100 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 1101 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 1102 1103 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 1104 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 1105 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 1106 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 1107 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 1108 1109 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 1110 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 1111 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 1112 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 1113 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 1114 1115 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 1116 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 1117 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 1118 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 1119 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 1120 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 1121 1122 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 1123 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 1124 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 1125 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 1126 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 1127 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 1128 1129 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 1130 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 1131 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 1132 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 1133 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 1134 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 1135 1136 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 1137 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 1138 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 1139 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 1140 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 1141 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 1142 1143 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 1144 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 1145 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 1146 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 1147 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 1148 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 1149 1150 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 1151 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 1152 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 1153 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 1154 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 1155 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 1156 1157 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 1158 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 1159 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 1160 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 1161 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 1162 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 1163 1164 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 1165 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 1166 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 1167 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 1168 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 1169 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 1170 1171 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 1172 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 1173 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 1174 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 1175 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 1176 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 1177 } 1178 1179 TEST(APIntTest, SaturatingMath) { 1180 APInt AP_10 = APInt(8, 10); 1181 APInt AP_42 = APInt(8, 42); 1182 APInt AP_100 = APInt(8, 100); 1183 APInt AP_200 = APInt(8, 200); 1184 1185 EXPECT_EQ(APInt(8, 100), AP_100.truncUSat(8)); 1186 EXPECT_EQ(APInt(7, 100), AP_100.truncUSat(7)); 1187 EXPECT_EQ(APInt(6, 63), AP_100.truncUSat(6)); 1188 EXPECT_EQ(APInt(5, 31), AP_100.truncUSat(5)); 1189 1190 EXPECT_EQ(APInt(8, 200), AP_200.truncUSat(8)); 1191 EXPECT_EQ(APInt(7, 127), AP_200.truncUSat(7)); 1192 EXPECT_EQ(APInt(6, 63), AP_200.truncUSat(6)); 1193 EXPECT_EQ(APInt(5, 31), AP_200.truncUSat(5)); 1194 1195 EXPECT_EQ(APInt(8, 42), AP_42.truncSSat(8)); 1196 EXPECT_EQ(APInt(7, 42), AP_42.truncSSat(7)); 1197 EXPECT_EQ(APInt(6, 31), AP_42.truncSSat(6)); 1198 EXPECT_EQ(APInt(5, 15), AP_42.truncSSat(5)); 1199 1200 EXPECT_EQ(APInt(8, -56), AP_200.truncSSat(8)); 1201 EXPECT_EQ(APInt(7, -56), AP_200.truncSSat(7)); 1202 EXPECT_EQ(APInt(6, -32), AP_200.truncSSat(6)); 1203 EXPECT_EQ(APInt(5, -16), AP_200.truncSSat(5)); 1204 1205 EXPECT_EQ(APInt(8, 200), AP_100.uadd_sat(AP_100)); 1206 EXPECT_EQ(APInt(8, 255), AP_100.uadd_sat(AP_200)); 1207 EXPECT_EQ(APInt(8, 255), APInt(8, 255).uadd_sat(APInt(8, 255))); 1208 1209 EXPECT_EQ(APInt(8, 110), AP_10.sadd_sat(AP_100)); 1210 EXPECT_EQ(APInt(8, 127), AP_100.sadd_sat(AP_100)); 1211 EXPECT_EQ(APInt(8, -128), (-AP_100).sadd_sat(-AP_100)); 1212 EXPECT_EQ(APInt(8, -128), APInt(8, -128).sadd_sat(APInt(8, -128))); 1213 1214 EXPECT_EQ(APInt(8, 90), AP_100.usub_sat(AP_10)); 1215 EXPECT_EQ(APInt(8, 0), AP_100.usub_sat(AP_200)); 1216 EXPECT_EQ(APInt(8, 0), APInt(8, 0).usub_sat(APInt(8, 255))); 1217 1218 EXPECT_EQ(APInt(8, -90), AP_10.ssub_sat(AP_100)); 1219 EXPECT_EQ(APInt(8, 127), AP_100.ssub_sat(-AP_100)); 1220 EXPECT_EQ(APInt(8, -128), (-AP_100).ssub_sat(AP_100)); 1221 EXPECT_EQ(APInt(8, -128), APInt(8, -128).ssub_sat(APInt(8, 127))); 1222 1223 EXPECT_EQ(APInt(8, 250), APInt(8, 50).umul_sat(APInt(8, 5))); 1224 EXPECT_EQ(APInt(8, 255), APInt(8, 50).umul_sat(APInt(8, 6))); 1225 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, 3))); 1226 EXPECT_EQ(APInt(8, 255), APInt(8, 3).umul_sat(APInt(8, -128))); 1227 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, -128))); 1228 1229 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1230 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1231 EXPECT_EQ(APInt(8, 127), APInt(8, 127).smul_sat(APInt(8, 127))); 1232 EXPECT_EQ(APInt(8, -125), APInt(8, -25).smul_sat(APInt(8, 5))); 1233 EXPECT_EQ(APInt(8, -125), APInt(8, 25).smul_sat(APInt(8, -5))); 1234 EXPECT_EQ(APInt(8, 125), APInt(8, -25).smul_sat(APInt(8, -5))); 1235 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1236 EXPECT_EQ(APInt(8, -128), APInt(8, -25).smul_sat(APInt(8, 6))); 1237 EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6))); 1238 EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6))); 1239 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1240 1241 EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5))); 1242 EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6))); 1243 EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7))); 1244 EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8))); 1245 EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2))); 1246 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2))); 1247 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2))); 1248 1249 EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4))); 1250 EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5))); 1251 EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8))); 1252 EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4))); 1253 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5))); 1254 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6))); 1255 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7))); 1256 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8))); 1257 } 1258 1259 TEST(APIntTest, FromArray) { 1260 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 1261 } 1262 1263 TEST(APIntTest, StringBitsNeeded2) { 1264 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 1265 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 1266 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 1267 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 1268 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 1269 1270 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 1271 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 1272 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 1273 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 1274 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 1275 1276 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 1277 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 1278 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 1279 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 1280 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 1281 } 1282 1283 TEST(APIntTest, StringBitsNeeded8) { 1284 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 1285 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 1286 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 1287 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 1288 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 1289 1290 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 1291 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 1292 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 1293 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 1294 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 1295 1296 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 1297 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 1298 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 1299 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 1300 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 1301 } 1302 1303 TEST(APIntTest, StringBitsNeeded10) { 1304 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 1305 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 1306 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 1307 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 1308 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 1309 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 1310 1311 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1312 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1313 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1314 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1315 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1316 1317 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1318 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1319 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1320 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1321 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1322 1323 EXPECT_EQ(1U, APInt::getBitsNeeded("-1", 10)); 1324 EXPECT_EQ(2U, APInt::getBitsNeeded("-2", 10)); 1325 EXPECT_EQ(3U, APInt::getBitsNeeded("-4", 10)); 1326 EXPECT_EQ(4U, APInt::getBitsNeeded("-8", 10)); 1327 EXPECT_EQ(5U, APInt::getBitsNeeded("-16", 10)); 1328 EXPECT_EQ(6U, APInt::getBitsNeeded("-23", 10)); 1329 EXPECT_EQ(6U, APInt::getBitsNeeded("-32", 10)); 1330 EXPECT_EQ(7U, APInt::getBitsNeeded("-64", 10)); 1331 EXPECT_EQ(8U, APInt::getBitsNeeded("-127", 10)); 1332 EXPECT_EQ(8U, APInt::getBitsNeeded("-128", 10)); 1333 EXPECT_EQ(9U, APInt::getBitsNeeded("-255", 10)); 1334 EXPECT_EQ(9U, APInt::getBitsNeeded("-256", 10)); 1335 EXPECT_EQ(10U, APInt::getBitsNeeded("-512", 10)); 1336 EXPECT_EQ(11U, APInt::getBitsNeeded("-1024", 10)); 1337 EXPECT_EQ(12U, APInt::getBitsNeeded("-1025", 10)); 1338 } 1339 1340 TEST(APIntTest, StringBitsNeeded16) { 1341 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1342 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1343 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1344 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1345 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1346 1347 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1348 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1349 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1350 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1351 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1352 1353 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1354 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1355 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1356 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1357 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1358 } 1359 1360 TEST(APIntTest, toString) { 1361 SmallString<16> S; 1362 bool isSigned; 1363 1364 APInt(8, 0).toString(S, 2, true, true); 1365 EXPECT_EQ(std::string(S), "0b0"); 1366 S.clear(); 1367 APInt(8, 0).toString(S, 8, true, true); 1368 EXPECT_EQ(std::string(S), "00"); 1369 S.clear(); 1370 APInt(8, 0).toString(S, 10, true, true); 1371 EXPECT_EQ(std::string(S), "0"); 1372 S.clear(); 1373 APInt(8, 0).toString(S, 16, true, true); 1374 EXPECT_EQ(std::string(S), "0x0"); 1375 S.clear(); 1376 APInt(8, 0).toString(S, 36, true, false); 1377 EXPECT_EQ(std::string(S), "0"); 1378 S.clear(); 1379 1380 isSigned = false; 1381 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1382 EXPECT_EQ(std::string(S), "0b11111111"); 1383 S.clear(); 1384 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1385 EXPECT_EQ(std::string(S), "0377"); 1386 S.clear(); 1387 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1388 EXPECT_EQ(std::string(S), "255"); 1389 S.clear(); 1390 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1391 EXPECT_EQ(std::string(S), "0xFF"); 1392 S.clear(); 1393 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1394 EXPECT_EQ(std::string(S), "73"); 1395 S.clear(); 1396 1397 isSigned = true; 1398 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1399 EXPECT_EQ(std::string(S), "-0b1"); 1400 S.clear(); 1401 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1402 EXPECT_EQ(std::string(S), "-01"); 1403 S.clear(); 1404 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1405 EXPECT_EQ(std::string(S), "-1"); 1406 S.clear(); 1407 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1408 EXPECT_EQ(std::string(S), "-0x1"); 1409 S.clear(); 1410 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1411 EXPECT_EQ(std::string(S), "-1"); 1412 S.clear(); 1413 } 1414 1415 TEST(APIntTest, Log2) { 1416 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1417 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1418 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1419 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1420 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1421 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1422 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1423 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1424 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1425 } 1426 1427 #ifdef GTEST_HAS_DEATH_TEST 1428 #ifndef NDEBUG 1429 TEST(APIntTest, StringDeath) { 1430 EXPECT_DEATH((void)APInt(32, "", 0), "Invalid string length"); 1431 EXPECT_DEATH((void)APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1432 EXPECT_DEATH((void)APInt(32, "", 10), "Invalid string length"); 1433 EXPECT_DEATH((void)APInt(32, "-", 10), "String is only a sign, needs a value."); 1434 EXPECT_DEATH((void)APInt(1, "1234", 10), "Insufficient bit width"); 1435 EXPECT_DEATH((void)APInt(32, "\0", 10), "Invalid string length"); 1436 EXPECT_DEATH((void)APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1437 EXPECT_DEATH((void)APInt(32, "1L", 10), "Invalid character in digit string"); 1438 } 1439 #endif 1440 #endif 1441 1442 TEST(APIntTest, mul_clear) { 1443 APInt ValA(65, -1ULL); 1444 APInt ValB(65, 4); 1445 APInt ValC(65, 0); 1446 ValC = ValA * ValB; 1447 ValA *= ValB; 1448 SmallString<16> StrA, StrC; 1449 ValA.toString(StrA, 10, false); 1450 ValC.toString(StrC, 10, false); 1451 EXPECT_EQ(std::string(StrA), std::string(StrC)); 1452 } 1453 1454 TEST(APIntTest, Rotate) { 1455 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1456 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1457 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1458 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1459 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1460 1461 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1462 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1463 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1464 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1465 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1466 1467 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1468 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1469 1470 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1471 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1472 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1473 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1474 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1475 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1476 1477 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1478 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1479 1480 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1481 1482 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1483 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1484 1485 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1486 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1487 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1488 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1489 1490 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1491 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1492 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1493 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1494 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1495 1496 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1497 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1498 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1499 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1500 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1501 1502 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1503 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1504 1505 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1506 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1507 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1508 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1509 1510 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1511 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1512 1513 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1514 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1515 1516 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1517 1518 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1519 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1520 1521 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1522 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1523 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1524 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1525 1526 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1527 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1528 EXPECT_EQ(Rot, Big.rotr(144)); 1529 1530 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1531 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1532 } 1533 1534 TEST(APIntTest, Splat) { 1535 APInt ValA(8, 0x01); 1536 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1537 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1538 1539 APInt ValB(3, 5); 1540 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1541 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1542 } 1543 1544 TEST(APIntTest, tcDecrement) { 1545 // Test single word decrement. 1546 1547 // No out borrow. 1548 { 1549 APInt::WordType singleWord = ~APInt::WordType(0) << (APInt::APINT_BITS_PER_WORD - 1); 1550 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1551 EXPECT_EQ(carry, APInt::WordType(0)); 1552 EXPECT_EQ(singleWord, ~APInt::WordType(0) >> 1); 1553 } 1554 1555 // With out borrow. 1556 { 1557 APInt::WordType singleWord = 0; 1558 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1559 EXPECT_EQ(carry, APInt::WordType(1)); 1560 EXPECT_EQ(singleWord, ~APInt::WordType(0)); 1561 } 1562 1563 // Test multiword decrement. 1564 1565 // No across word borrow, no out borrow. 1566 { 1567 APInt::WordType test[4] = {0x1, 0x1, 0x1, 0x1}; 1568 APInt::WordType expected[4] = {0x0, 0x1, 0x1, 0x1}; 1569 APInt::tcDecrement(test, 4); 1570 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1571 } 1572 1573 // 1 across word borrow, no out borrow. 1574 { 1575 APInt::WordType test[4] = {0x0, 0xF, 0x1, 0x1}; 1576 APInt::WordType expected[4] = {~APInt::WordType(0), 0xE, 0x1, 0x1}; 1577 APInt::WordType carry = APInt::tcDecrement(test, 4); 1578 EXPECT_EQ(carry, APInt::WordType(0)); 1579 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1580 } 1581 1582 // 2 across word borrow, no out borrow. 1583 { 1584 APInt::WordType test[4] = {0x0, 0x0, 0xC, 0x1}; 1585 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), 0xB, 0x1}; 1586 APInt::WordType carry = APInt::tcDecrement(test, 4); 1587 EXPECT_EQ(carry, APInt::WordType(0)); 1588 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1589 } 1590 1591 // 3 across word borrow, no out borrow. 1592 { 1593 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x1}; 1594 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), 0x0}; 1595 APInt::WordType carry = APInt::tcDecrement(test, 4); 1596 EXPECT_EQ(carry, APInt::WordType(0)); 1597 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1598 } 1599 1600 // 3 across word borrow, with out borrow. 1601 { 1602 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x0}; 1603 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0)}; 1604 APInt::WordType carry = APInt::tcDecrement(test, 4); 1605 EXPECT_EQ(carry, APInt::WordType(1)); 1606 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1607 } 1608 } 1609 1610 TEST(APIntTest, arrayAccess) { 1611 // Single word check. 1612 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1613 APInt A1(64, E1); 1614 for (unsigned i = 0, e = 64; i < e; ++i) { 1615 EXPECT_EQ(bool(E1 & (1ULL << i)), 1616 A1[i]); 1617 } 1618 1619 // Multiword check. 1620 APInt::WordType E2[4] = { 1621 0xEB6EB136591CBA21ULL, 1622 0x7B9358BD6A33F10AULL, 1623 0x7E7FFA5EADD8846ULL, 1624 0x305F341CA00B613DULL 1625 }; 1626 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 1627 for (unsigned i = 0; i < 4; ++i) { 1628 for (unsigned j = 0; j < APInt::APINT_BITS_PER_WORD; ++j) { 1629 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1630 A2[i*APInt::APINT_BITS_PER_WORD + j]); 1631 } 1632 } 1633 } 1634 1635 TEST(APIntTest, LargeAPIntConstruction) { 1636 // Check that we can properly construct very large APInt. It is very 1637 // unlikely that people will ever do this, but it is a legal input, 1638 // so we should not crash on it. 1639 APInt A9(UINT32_MAX, 0); 1640 EXPECT_FALSE(A9.getBoolValue()); 1641 } 1642 1643 TEST(APIntTest, nearestLogBase2) { 1644 // Single word check. 1645 1646 // Test round up. 1647 uint64_t I1 = 0x1800001; 1648 APInt A1(64, I1); 1649 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1650 1651 // Test round down. 1652 uint64_t I2 = 0x1000011; 1653 APInt A2(64, I2); 1654 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1655 1656 // Test ties round up. 1657 uint64_t I3 = 0x1800000; 1658 APInt A3(64, I3); 1659 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1660 1661 // Multiple word check. 1662 1663 // Test round up. 1664 APInt::WordType I4[4] = {0x0, 0xF, 0x18, 0x0}; 1665 APInt A4(APInt::APINT_BITS_PER_WORD*4, I4); 1666 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1667 1668 // Test round down. 1669 APInt::WordType I5[4] = {0x0, 0xF, 0x10, 0x0}; 1670 APInt A5(APInt::APINT_BITS_PER_WORD*4, I5); 1671 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1672 1673 // Test ties round up. 1674 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1675 APInt A6(APInt::APINT_BITS_PER_WORD*4, I6); 1676 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1677 1678 // Test BitWidth == 1 special cases. 1679 APInt A7(1, 1); 1680 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1681 APInt A8(1, 0); 1682 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1683 1684 // Test the zero case when we have a bit width large enough such 1685 // that the bit width is larger than UINT32_MAX-1. 1686 APInt A9(UINT32_MAX, 0); 1687 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1688 } 1689 1690 TEST(APIntTest, IsSplat) { 1691 APInt A(32, 0x01010101); 1692 EXPECT_FALSE(A.isSplat(1)); 1693 EXPECT_FALSE(A.isSplat(2)); 1694 EXPECT_FALSE(A.isSplat(4)); 1695 EXPECT_TRUE(A.isSplat(8)); 1696 EXPECT_TRUE(A.isSplat(16)); 1697 EXPECT_TRUE(A.isSplat(32)); 1698 1699 APInt B(24, 0xAAAAAA); 1700 EXPECT_FALSE(B.isSplat(1)); 1701 EXPECT_TRUE(B.isSplat(2)); 1702 EXPECT_TRUE(B.isSplat(4)); 1703 EXPECT_TRUE(B.isSplat(8)); 1704 EXPECT_TRUE(B.isSplat(24)); 1705 1706 APInt C(24, 0xABAAAB); 1707 EXPECT_FALSE(C.isSplat(1)); 1708 EXPECT_FALSE(C.isSplat(2)); 1709 EXPECT_FALSE(C.isSplat(4)); 1710 EXPECT_FALSE(C.isSplat(8)); 1711 EXPECT_TRUE(C.isSplat(24)); 1712 1713 APInt D(32, 0xABBAABBA); 1714 EXPECT_FALSE(D.isSplat(1)); 1715 EXPECT_FALSE(D.isSplat(2)); 1716 EXPECT_FALSE(D.isSplat(4)); 1717 EXPECT_FALSE(D.isSplat(8)); 1718 EXPECT_TRUE(D.isSplat(16)); 1719 EXPECT_TRUE(D.isSplat(32)); 1720 1721 APInt E(32, 0); 1722 EXPECT_TRUE(E.isSplat(1)); 1723 EXPECT_TRUE(E.isSplat(2)); 1724 EXPECT_TRUE(E.isSplat(4)); 1725 EXPECT_TRUE(E.isSplat(8)); 1726 EXPECT_TRUE(E.isSplat(16)); 1727 EXPECT_TRUE(E.isSplat(32)); 1728 } 1729 1730 TEST(APIntTest, isMask) { 1731 EXPECT_FALSE(APInt(32, 0x01010101).isMask()); 1732 EXPECT_FALSE(APInt(32, 0xf0000000).isMask()); 1733 EXPECT_FALSE(APInt(32, 0xffff0000).isMask()); 1734 EXPECT_FALSE(APInt(32, 0xff << 1).isMask()); 1735 1736 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1737 EXPECT_FALSE(APInt(N, 0).isMask()); 1738 1739 APInt One(N, 1); 1740 for (int I = 1; I <= N; ++I) { 1741 APInt MaskVal = One.shl(I) - 1; 1742 EXPECT_TRUE(MaskVal.isMask()); 1743 EXPECT_TRUE(MaskVal.isMask(I)); 1744 } 1745 } 1746 } 1747 1748 TEST(APIntTest, isShiftedMask) { 1749 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask()); 1750 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask()); 1751 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask()); 1752 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask()); 1753 1754 unsigned MaskIdx, MaskLen; 1755 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask(MaskIdx, MaskLen)); 1756 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask(MaskIdx, MaskLen)); 1757 EXPECT_EQ(28, (int)MaskIdx); 1758 EXPECT_EQ(4, (int)MaskLen); 1759 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask(MaskIdx, MaskLen)); 1760 EXPECT_EQ(16, (int)MaskIdx); 1761 EXPECT_EQ(16, (int)MaskLen); 1762 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask(MaskIdx, MaskLen)); 1763 EXPECT_EQ(1, (int)MaskIdx); 1764 EXPECT_EQ(8, (int)MaskLen); 1765 1766 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1767 EXPECT_FALSE(APInt(N, 0).isShiftedMask()); 1768 EXPECT_FALSE(APInt(N, 0).isShiftedMask(MaskIdx, MaskLen)); 1769 1770 APInt One(N, 1); 1771 for (int I = 1; I < N; ++I) { 1772 APInt MaskVal = One.shl(I) - 1; 1773 EXPECT_TRUE(MaskVal.isShiftedMask()); 1774 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1775 EXPECT_EQ(0, (int)MaskIdx); 1776 EXPECT_EQ(I, (int)MaskLen); 1777 } 1778 for (int I = 1; I < N - 1; ++I) { 1779 APInt MaskVal = One.shl(I); 1780 EXPECT_TRUE(MaskVal.isShiftedMask()); 1781 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1782 EXPECT_EQ(I, (int)MaskIdx); 1783 EXPECT_EQ(1, (int)MaskLen); 1784 } 1785 for (int I = 1; I < N; ++I) { 1786 APInt MaskVal = APInt::getHighBitsSet(N, I); 1787 EXPECT_TRUE(MaskVal.isShiftedMask()); 1788 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1789 EXPECT_EQ(N - I, (int)MaskIdx); 1790 EXPECT_EQ(I, (int)MaskLen); 1791 } 1792 } 1793 } 1794 1795 TEST(APIntTest, isPowerOf2) { 1796 EXPECT_FALSE(APInt(5, 0x00).isPowerOf2()); 1797 EXPECT_FALSE(APInt(32, 0x11).isPowerOf2()); 1798 EXPECT_TRUE(APInt(17, 0x01).isPowerOf2()); 1799 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isPowerOf2()); 1800 1801 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1802 EXPECT_FALSE(APInt(N, 0).isPowerOf2()); 1803 EXPECT_TRUE(APInt::getSignedMinValue(N).isPowerOf2()); 1804 1805 APInt One(N, 1); 1806 for (int I = 1; I < N - 1; ++I) { 1807 EXPECT_TRUE(APInt::getOneBitSet(N, I).isPowerOf2()); 1808 1809 APInt MaskVal = One.shl(I); 1810 EXPECT_TRUE(MaskVal.isPowerOf2()); 1811 } 1812 } 1813 } 1814 1815 TEST(APIntTest, isNegatedPowerOf2) { 1816 EXPECT_FALSE(APInt(5, 0x00).isNegatedPowerOf2()); 1817 EXPECT_TRUE(APInt(15, 0x7ffe).isNegatedPowerOf2()); 1818 EXPECT_TRUE(APInt(16, 0xfffc).isNegatedPowerOf2()); 1819 EXPECT_TRUE(APInt(32, 0xffffffff).isNegatedPowerOf2()); 1820 1821 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1822 EXPECT_FALSE(APInt(N, 0).isNegatedPowerOf2()); 1823 EXPECT_TRUE(APInt::getAllOnes(N).isNegatedPowerOf2()); 1824 EXPECT_TRUE(APInt::getSignedMinValue(N).isNegatedPowerOf2()); 1825 EXPECT_TRUE((-APInt::getSignedMinValue(N)).isNegatedPowerOf2()); 1826 1827 APInt One(N, 1); 1828 for (int I = 1; I < N - 1; ++I) { 1829 EXPECT_FALSE(APInt::getOneBitSet(N, I).isNegatedPowerOf2()); 1830 EXPECT_TRUE((-APInt::getOneBitSet(N, I)).isNegatedPowerOf2()); 1831 1832 APInt MaskVal = One.shl(I); 1833 EXPECT_TRUE((-MaskVal).isNegatedPowerOf2()); 1834 1835 APInt ShiftMaskVal = One.getHighBitsSet(N, I); 1836 EXPECT_TRUE(ShiftMaskVal.isNegatedPowerOf2()); 1837 } 1838 } 1839 } 1840 1841 // Test that self-move works with EXPENSIVE_CHECKS. It calls std::shuffle which 1842 // does self-move on some platforms. 1843 #ifdef EXPENSIVE_CHECKS 1844 #if defined(__clang__) 1845 // Disable the pragma warning from versions of Clang without -Wself-move 1846 #pragma clang diagnostic push 1847 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1848 // Disable the warning that triggers on exactly what is being tested. 1849 #pragma clang diagnostic push 1850 #pragma clang diagnostic ignored "-Wself-move" 1851 #endif 1852 TEST(APIntTest, SelfMoveAssignment) { 1853 APInt X(32, 0xdeadbeef); 1854 X = std::move(X); 1855 EXPECT_EQ(32u, X.getBitWidth()); 1856 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1857 1858 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1859 APInt Y(128, Bits); 1860 Y = std::move(Y); 1861 EXPECT_EQ(128u, Y.getBitWidth()); 1862 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1863 const uint64_t *Raw = Y.getRawData(); 1864 EXPECT_EQ(2u, Y.getNumWords()); 1865 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1866 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1867 } 1868 #if defined(__clang__) 1869 #pragma clang diagnostic pop 1870 #pragma clang diagnostic pop 1871 #endif 1872 #endif // EXPENSIVE_CHECKS 1873 1874 TEST(APIntTest, byteSwap) { 1875 EXPECT_EQ(0x00000000, APInt(16, 0x0000).byteSwap()); 1876 EXPECT_EQ(0x0000010f, APInt(16, 0x0f01).byteSwap()); 1877 EXPECT_EQ(0x00ff8000, APInt(24, 0x0080ff).byteSwap()); 1878 EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap()); 1879 EXPECT_EQ(0x228811aaffULL, APInt(40, 0xffaa118822ULL).byteSwap()); 1880 EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap()); 1881 EXPECT_EQ(0xff050403020100ULL, APInt(56, 0x000102030405ffULL).byteSwap()); 1882 EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap()); 1883 1884 for (unsigned N : {16, 24, 32, 48, 56, 64, 72, 80, 96, 112, 128, 248, 256, 1885 1024, 1032, 1040}) { 1886 for (unsigned I = 0; I < N; I += 8) { 1887 APInt X = APInt::getBitsSet(N, I, I + 8); 1888 APInt Y = APInt::getBitsSet(N, N - I - 8, N - I); 1889 EXPECT_EQ(Y, X.byteSwap()); 1890 EXPECT_EQ(X, Y.byteSwap()); 1891 } 1892 } 1893 } 1894 1895 TEST(APIntTest, reverseBits) { 1896 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1897 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1898 1899 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1900 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1901 1902 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1903 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1904 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1905 1906 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1907 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1908 1909 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1910 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1911 1912 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1913 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1914 1915 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1916 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1917 1918 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1919 1920 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1921 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1922 1923 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1924 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1925 1926 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1927 63, 64, 65, 127, 128, 257, 1024 }) { 1928 for (unsigned I = 0; I < N; ++I) { 1929 APInt X = APInt::getOneBitSet(N, I); 1930 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1931 EXPECT_EQ(Y, X.reverseBits()); 1932 EXPECT_EQ(X, Y.reverseBits()); 1933 } 1934 } 1935 } 1936 1937 TEST(APIntTest, insertBits) { 1938 APInt iSrc(31, 0x00123456); 1939 1940 // Direct copy. 1941 APInt i31(31, 0x76543210ull); 1942 i31.insertBits(iSrc, 0); 1943 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 1944 1945 // Single word src/dst insertion. 1946 APInt i63(63, 0x01234567FFFFFFFFull); 1947 i63.insertBits(iSrc, 4); 1948 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 1949 1950 // Zero width insert is a noop. 1951 i31.insertBits(APInt::getZeroWidth(), 1); 1952 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 1953 1954 // Insert single word src into one word of dst. 1955 APInt i120(120, UINT64_MAX, true); 1956 i120.insertBits(iSrc, 8); 1957 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 1958 1959 // Insert single word src into two words of dst. 1960 APInt i127(127, UINT64_MAX, true); 1961 i127.insertBits(iSrc, 48); 1962 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 1963 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 1964 1965 // Insert on word boundaries. 1966 APInt i128(128, 0); 1967 i128.insertBits(APInt(64, UINT64_MAX, true), 0); 1968 i128.insertBits(APInt(64, UINT64_MAX, true), 64); 1969 EXPECT_EQ(-1, i128.getSExtValue()); 1970 1971 APInt i256(256, UINT64_MAX, true); 1972 i256.insertBits(APInt(65, 0), 0); 1973 i256.insertBits(APInt(69, 0), 64); 1974 i256.insertBits(APInt(128, 0), 128); 1975 EXPECT_EQ(0u, i256.getSExtValue()); 1976 1977 APInt i257(257, 0); 1978 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 1979 EXPECT_EQ(i257.extractBits(64, 0).getZExtValue(), 0x0000000000000000ull); 1980 EXPECT_EQ(i257.extractBits(64, 64).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 1981 EXPECT_EQ(i257.extractBits(64, 128).getZExtValue(), 0x00000000FFFFFFFFull); 1982 EXPECT_EQ(i257.extractBits(65, 192).getZExtValue(), 0x0000000000000000ull); 1983 1984 // General insertion. 1985 APInt i260(260, UINT64_MAX, true); 1986 i260.insertBits(APInt(129, 1ull << 48), 15); 1987 EXPECT_EQ(i260.extractBits(64, 0).getZExtValue(), 0x8000000000007FFFull); 1988 EXPECT_EQ(i260.extractBits(64, 64).getZExtValue(), 0x0000000000000000ull); 1989 EXPECT_EQ(i260.extractBits(64, 128).getZExtValue(), 0xFFFFFFFFFFFF0000ull); 1990 EXPECT_EQ(i260.extractBits(64, 192).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 1991 EXPECT_EQ(i260.extractBits(4, 256).getZExtValue(), 0x000000000000000Full); 1992 } 1993 1994 TEST(APIntTest, insertBitsUInt64) { 1995 // Tests cloned from insertBits but adapted to the numBits <= 64 constraint 1996 uint64_t iSrc = 0x00123456; 1997 1998 // Direct copy. 1999 APInt i31(31, 0x76543210ull); 2000 i31.insertBits(iSrc, 0, 31); 2001 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2002 2003 // Single word src/dst insertion. 2004 APInt i63(63, 0x01234567FFFFFFFFull); 2005 i63.insertBits(iSrc, 4, 31); 2006 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2007 2008 // Insert single word src into one word of dst. 2009 APInt i120(120, UINT64_MAX, true); 2010 i120.insertBits(iSrc, 8, 31); 2011 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2012 2013 // Insert single word src into two words of dst. 2014 APInt i127(127, UINT64_MAX, true); 2015 i127.insertBits(iSrc, 48, 31); 2016 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2017 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2018 2019 // Insert on word boundaries. 2020 APInt i128(128, 0); 2021 i128.insertBits(UINT64_MAX, 0, 64); 2022 i128.insertBits(UINT64_MAX, 64, 64); 2023 EXPECT_EQ(-1, i128.getSExtValue()); 2024 2025 APInt i256(256, UINT64_MAX, true); 2026 i256.insertBits(0, 0, 64); 2027 i256.insertBits(0, 64, 1); 2028 i256.insertBits(0, 64, 64); 2029 i256.insertBits(0, 128, 5); 2030 i256.insertBits(0, 128, 64); 2031 i256.insertBits(0, 192, 64); 2032 EXPECT_EQ(0u, i256.getSExtValue()); 2033 2034 APInt i257(257, 0); 2035 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2036 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 0), 0x0000000000000000ull); 2037 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 64), 0xFFFFFFFFFFFFFFFFull); 2038 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 128), 0x00000000FFFFFFFFull); 2039 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 192), 0x0000000000000000ull); 2040 EXPECT_EQ(i257.extractBitsAsZExtValue(1, 256), 0x0000000000000000ull); 2041 2042 // General insertion. 2043 APInt i260(260, UINT64_MAX, true); 2044 i260.insertBits(APInt(129, 1ull << 48), 15); 2045 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 0), 0x8000000000007FFFull); 2046 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 64), 0x0000000000000000ull); 2047 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 128), 0xFFFFFFFFFFFF0000ull); 2048 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 192), 0xFFFFFFFFFFFFFFFFull); 2049 EXPECT_EQ(i260.extractBitsAsZExtValue(4, 256), 0x000000000000000Full); 2050 } 2051 2052 TEST(APIntTest, extractBits) { 2053 APInt i32(32, 0x1234567); 2054 EXPECT_EQ(0x3456, i32.extractBits(16, 4)); 2055 2056 APInt i64(64, 0x01234567FFFFFFFFull); 2057 EXPECT_EQ(0xFFFFFFFF, i64.extractBits(32, 0)); 2058 EXPECT_EQ(0xFFFFFFFF, i64.trunc(32)); 2059 EXPECT_EQ(0x01234567, i64.extractBits(32, 32)); 2060 EXPECT_EQ(0x01234567, i64.lshr(32).trunc(32)); 2061 2062 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2063 EXPECT_EQ(0xFFu, i257.extractBits(16, 0)); 2064 EXPECT_EQ(0xFFu, i257.lshr(0).trunc(16)); 2065 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1)); 2066 EXPECT_EQ((0xFFu >> 1), i257.lshr(1).trunc(16)); 2067 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue()); 2068 EXPECT_EQ(-1, i257.lshr(64).trunc(32).getSExtValue()); 2069 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue()); 2070 EXPECT_EQ(-1, i257.lshr(128).trunc(128).getSExtValue()); 2071 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue()); 2072 EXPECT_EQ(-1, i257.lshr(191).trunc(66).getSExtValue()); 2073 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2074 i257.extractBits(128, 1).getSExtValue()); 2075 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2076 i257.lshr(1).trunc(128).getSExtValue()); 2077 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2078 i257.extractBits(129, 1).getSExtValue()); 2079 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2080 i257.lshr(1).trunc(129).getSExtValue()); 2081 2082 EXPECT_EQ(APInt(48, 0), 2083 APInt(144, "281474976710655", 10).extractBits(48, 48)); 2084 EXPECT_EQ(APInt(48, 0), 2085 APInt(144, "281474976710655", 10).lshr(48).trunc(48)); 2086 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2087 APInt(144, "281474976710655", 10).extractBits(48, 0)); 2088 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2089 APInt(144, "281474976710655", 10).lshr(0).trunc(48)); 2090 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2091 APInt(144, "281474976710655", 10).extractBits(48, 1)); 2092 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2093 APInt(144, "281474976710655", 10).lshr(1).trunc(48)); 2094 } 2095 2096 TEST(APIntTest, extractBitsAsZExtValue) { 2097 // Tests based on extractBits 2098 APInt i32(32, 0x1234567); 2099 EXPECT_EQ(0x3456u, i32.extractBitsAsZExtValue(16, 4)); 2100 2101 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2102 EXPECT_EQ(0xFFu, i257.extractBitsAsZExtValue(16, 0)); 2103 EXPECT_EQ((0xFFu >> 1), i257.extractBitsAsZExtValue(16, 1)); 2104 EXPECT_EQ(0xFFFFFFFFull, i257.extractBitsAsZExtValue(32, 64)); 2105 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 128)); 2106 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 192)); 2107 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 191)); 2108 EXPECT_EQ(0x3u, i257.extractBitsAsZExtValue(2, 255)); 2109 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2110 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2111 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2112 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2113 EXPECT_EQ(0x1ull, i257.extractBitsAsZExtValue(1, 129)); 2114 2115 EXPECT_EQ(APInt(48, 0), 2116 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 48)); 2117 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2118 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 0)); 2119 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2120 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 1)); 2121 } 2122 2123 TEST(APIntTest, getLowBitsSet) { 2124 APInt i128lo64 = APInt::getLowBitsSet(128, 64); 2125 EXPECT_EQ(0u, i128lo64.countLeadingOnes()); 2126 EXPECT_EQ(64u, i128lo64.countLeadingZeros()); 2127 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2128 EXPECT_EQ(0u, i128lo64.countTrailingZeros()); 2129 EXPECT_EQ(64u, i128lo64.countTrailingOnes()); 2130 EXPECT_EQ(64u, i128lo64.countPopulation()); 2131 } 2132 2133 TEST(APIntTest, getBitsSet) { 2134 APInt i64hi1lo1 = APInt::getBitsSet(64, 1, 63); 2135 EXPECT_EQ(0u, i64hi1lo1.countLeadingOnes()); 2136 EXPECT_EQ(1u, i64hi1lo1.countLeadingZeros()); 2137 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2138 EXPECT_EQ(1u, i64hi1lo1.countTrailingZeros()); 2139 EXPECT_EQ(0u, i64hi1lo1.countTrailingOnes()); 2140 EXPECT_EQ(62u, i64hi1lo1.countPopulation()); 2141 2142 APInt i127hi1lo1 = APInt::getBitsSet(127, 1, 126); 2143 EXPECT_EQ(0u, i127hi1lo1.countLeadingOnes()); 2144 EXPECT_EQ(1u, i127hi1lo1.countLeadingZeros()); 2145 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2146 EXPECT_EQ(1u, i127hi1lo1.countTrailingZeros()); 2147 EXPECT_EQ(0u, i127hi1lo1.countTrailingOnes()); 2148 EXPECT_EQ(125u, i127hi1lo1.countPopulation()); 2149 } 2150 2151 TEST(APIntTest, getBitsSetWithWrap) { 2152 APInt i64hi1lo1 = APInt::getBitsSetWithWrap(64, 1, 63); 2153 EXPECT_EQ(0u, i64hi1lo1.countLeadingOnes()); 2154 EXPECT_EQ(1u, i64hi1lo1.countLeadingZeros()); 2155 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2156 EXPECT_EQ(1u, i64hi1lo1.countTrailingZeros()); 2157 EXPECT_EQ(0u, i64hi1lo1.countTrailingOnes()); 2158 EXPECT_EQ(62u, i64hi1lo1.countPopulation()); 2159 2160 APInt i127hi1lo1 = APInt::getBitsSetWithWrap(127, 1, 126); 2161 EXPECT_EQ(0u, i127hi1lo1.countLeadingOnes()); 2162 EXPECT_EQ(1u, i127hi1lo1.countLeadingZeros()); 2163 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2164 EXPECT_EQ(1u, i127hi1lo1.countTrailingZeros()); 2165 EXPECT_EQ(0u, i127hi1lo1.countTrailingOnes()); 2166 EXPECT_EQ(125u, i127hi1lo1.countPopulation()); 2167 2168 APInt i64hi1lo1wrap = APInt::getBitsSetWithWrap(64, 63, 1); 2169 EXPECT_EQ(1u, i64hi1lo1wrap.countLeadingOnes()); 2170 EXPECT_EQ(0u, i64hi1lo1wrap.countLeadingZeros()); 2171 EXPECT_EQ(64u, i64hi1lo1wrap.getActiveBits()); 2172 EXPECT_EQ(0u, i64hi1lo1wrap.countTrailingZeros()); 2173 EXPECT_EQ(1u, i64hi1lo1wrap.countTrailingOnes()); 2174 EXPECT_EQ(2u, i64hi1lo1wrap.countPopulation()); 2175 2176 APInt i127hi1lo1wrap = APInt::getBitsSetWithWrap(127, 126, 1); 2177 EXPECT_EQ(1u, i127hi1lo1wrap.countLeadingOnes()); 2178 EXPECT_EQ(0u, i127hi1lo1wrap.countLeadingZeros()); 2179 EXPECT_EQ(127u, i127hi1lo1wrap.getActiveBits()); 2180 EXPECT_EQ(0u, i127hi1lo1wrap.countTrailingZeros()); 2181 EXPECT_EQ(1u, i127hi1lo1wrap.countTrailingOnes()); 2182 EXPECT_EQ(2u, i127hi1lo1wrap.countPopulation()); 2183 2184 APInt i32hiequallowrap = APInt::getBitsSetWithWrap(32, 10, 10); 2185 EXPECT_EQ(32u, i32hiequallowrap.countLeadingOnes()); 2186 EXPECT_EQ(0u, i32hiequallowrap.countLeadingZeros()); 2187 EXPECT_EQ(32u, i32hiequallowrap.getActiveBits()); 2188 EXPECT_EQ(0u, i32hiequallowrap.countTrailingZeros()); 2189 EXPECT_EQ(32u, i32hiequallowrap.countTrailingOnes()); 2190 EXPECT_EQ(32u, i32hiequallowrap.countPopulation()); 2191 } 2192 2193 TEST(APIntTest, getHighBitsSet) { 2194 APInt i64hi32 = APInt::getHighBitsSet(64, 32); 2195 EXPECT_EQ(32u, i64hi32.countLeadingOnes()); 2196 EXPECT_EQ(0u, i64hi32.countLeadingZeros()); 2197 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2198 EXPECT_EQ(32u, i64hi32.countTrailingZeros()); 2199 EXPECT_EQ(0u, i64hi32.countTrailingOnes()); 2200 EXPECT_EQ(32u, i64hi32.countPopulation()); 2201 } 2202 2203 TEST(APIntTest, getBitsSetFrom) { 2204 APInt i64hi31 = APInt::getBitsSetFrom(64, 33); 2205 EXPECT_EQ(31u, i64hi31.countLeadingOnes()); 2206 EXPECT_EQ(0u, i64hi31.countLeadingZeros()); 2207 EXPECT_EQ(64u, i64hi31.getActiveBits()); 2208 EXPECT_EQ(33u, i64hi31.countTrailingZeros()); 2209 EXPECT_EQ(0u, i64hi31.countTrailingOnes()); 2210 EXPECT_EQ(31u, i64hi31.countPopulation()); 2211 } 2212 2213 TEST(APIntTest, setLowBits) { 2214 APInt i64lo32(64, 0); 2215 i64lo32.setLowBits(32); 2216 EXPECT_EQ(0u, i64lo32.countLeadingOnes()); 2217 EXPECT_EQ(32u, i64lo32.countLeadingZeros()); 2218 EXPECT_EQ(32u, i64lo32.getActiveBits()); 2219 EXPECT_EQ(0u, i64lo32.countTrailingZeros()); 2220 EXPECT_EQ(32u, i64lo32.countTrailingOnes()); 2221 EXPECT_EQ(32u, i64lo32.countPopulation()); 2222 2223 APInt i128lo64(128, 0); 2224 i128lo64.setLowBits(64); 2225 EXPECT_EQ(0u, i128lo64.countLeadingOnes()); 2226 EXPECT_EQ(64u, i128lo64.countLeadingZeros()); 2227 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2228 EXPECT_EQ(0u, i128lo64.countTrailingZeros()); 2229 EXPECT_EQ(64u, i128lo64.countTrailingOnes()); 2230 EXPECT_EQ(64u, i128lo64.countPopulation()); 2231 2232 APInt i128lo24(128, 0); 2233 i128lo24.setLowBits(24); 2234 EXPECT_EQ(0u, i128lo24.countLeadingOnes()); 2235 EXPECT_EQ(104u, i128lo24.countLeadingZeros()); 2236 EXPECT_EQ(24u, i128lo24.getActiveBits()); 2237 EXPECT_EQ(0u, i128lo24.countTrailingZeros()); 2238 EXPECT_EQ(24u, i128lo24.countTrailingOnes()); 2239 EXPECT_EQ(24u, i128lo24.countPopulation()); 2240 2241 APInt i128lo104(128, 0); 2242 i128lo104.setLowBits(104); 2243 EXPECT_EQ(0u, i128lo104.countLeadingOnes()); 2244 EXPECT_EQ(24u, i128lo104.countLeadingZeros()); 2245 EXPECT_EQ(104u, i128lo104.getActiveBits()); 2246 EXPECT_EQ(0u, i128lo104.countTrailingZeros()); 2247 EXPECT_EQ(104u, i128lo104.countTrailingOnes()); 2248 EXPECT_EQ(104u, i128lo104.countPopulation()); 2249 2250 APInt i128lo0(128, 0); 2251 i128lo0.setLowBits(0); 2252 EXPECT_EQ(0u, i128lo0.countLeadingOnes()); 2253 EXPECT_EQ(128u, i128lo0.countLeadingZeros()); 2254 EXPECT_EQ(0u, i128lo0.getActiveBits()); 2255 EXPECT_EQ(128u, i128lo0.countTrailingZeros()); 2256 EXPECT_EQ(0u, i128lo0.countTrailingOnes()); 2257 EXPECT_EQ(0u, i128lo0.countPopulation()); 2258 2259 APInt i80lo79(80, 0); 2260 i80lo79.setLowBits(79); 2261 EXPECT_EQ(0u, i80lo79.countLeadingOnes()); 2262 EXPECT_EQ(1u, i80lo79.countLeadingZeros()); 2263 EXPECT_EQ(79u, i80lo79.getActiveBits()); 2264 EXPECT_EQ(0u, i80lo79.countTrailingZeros()); 2265 EXPECT_EQ(79u, i80lo79.countTrailingOnes()); 2266 EXPECT_EQ(79u, i80lo79.countPopulation()); 2267 } 2268 2269 TEST(APIntTest, setHighBits) { 2270 APInt i64hi32(64, 0); 2271 i64hi32.setHighBits(32); 2272 EXPECT_EQ(32u, i64hi32.countLeadingOnes()); 2273 EXPECT_EQ(0u, i64hi32.countLeadingZeros()); 2274 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2275 EXPECT_EQ(32u, i64hi32.countTrailingZeros()); 2276 EXPECT_EQ(0u, i64hi32.countTrailingOnes()); 2277 EXPECT_EQ(32u, i64hi32.countPopulation()); 2278 2279 APInt i128hi64(128, 0); 2280 i128hi64.setHighBits(64); 2281 EXPECT_EQ(64u, i128hi64.countLeadingOnes()); 2282 EXPECT_EQ(0u, i128hi64.countLeadingZeros()); 2283 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2284 EXPECT_EQ(64u, i128hi64.countTrailingZeros()); 2285 EXPECT_EQ(0u, i128hi64.countTrailingOnes()); 2286 EXPECT_EQ(64u, i128hi64.countPopulation()); 2287 2288 APInt i128hi24(128, 0); 2289 i128hi24.setHighBits(24); 2290 EXPECT_EQ(24u, i128hi24.countLeadingOnes()); 2291 EXPECT_EQ(0u, i128hi24.countLeadingZeros()); 2292 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2293 EXPECT_EQ(104u, i128hi24.countTrailingZeros()); 2294 EXPECT_EQ(0u, i128hi24.countTrailingOnes()); 2295 EXPECT_EQ(24u, i128hi24.countPopulation()); 2296 2297 APInt i128hi104(128, 0); 2298 i128hi104.setHighBits(104); 2299 EXPECT_EQ(104u, i128hi104.countLeadingOnes()); 2300 EXPECT_EQ(0u, i128hi104.countLeadingZeros()); 2301 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2302 EXPECT_EQ(24u, i128hi104.countTrailingZeros()); 2303 EXPECT_EQ(0u, i128hi104.countTrailingOnes()); 2304 EXPECT_EQ(104u, i128hi104.countPopulation()); 2305 2306 APInt i128hi0(128, 0); 2307 i128hi0.setHighBits(0); 2308 EXPECT_EQ(0u, i128hi0.countLeadingOnes()); 2309 EXPECT_EQ(128u, i128hi0.countLeadingZeros()); 2310 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2311 EXPECT_EQ(128u, i128hi0.countTrailingZeros()); 2312 EXPECT_EQ(0u, i128hi0.countTrailingOnes()); 2313 EXPECT_EQ(0u, i128hi0.countPopulation()); 2314 2315 APInt i80hi1(80, 0); 2316 i80hi1.setHighBits(1); 2317 EXPECT_EQ(1u, i80hi1.countLeadingOnes()); 2318 EXPECT_EQ(0u, i80hi1.countLeadingZeros()); 2319 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2320 EXPECT_EQ(79u, i80hi1.countTrailingZeros()); 2321 EXPECT_EQ(0u, i80hi1.countTrailingOnes()); 2322 EXPECT_EQ(1u, i80hi1.countPopulation()); 2323 2324 APInt i32hi16(32, 0); 2325 i32hi16.setHighBits(16); 2326 EXPECT_EQ(16u, i32hi16.countLeadingOnes()); 2327 EXPECT_EQ(0u, i32hi16.countLeadingZeros()); 2328 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2329 EXPECT_EQ(16u, i32hi16.countTrailingZeros()); 2330 EXPECT_EQ(0u, i32hi16.countTrailingOnes()); 2331 EXPECT_EQ(16u, i32hi16.countPopulation()); 2332 } 2333 2334 TEST(APIntTest, setBitsFrom) { 2335 APInt i64from63(64, 0); 2336 i64from63.setBitsFrom(63); 2337 EXPECT_EQ(1u, i64from63.countLeadingOnes()); 2338 EXPECT_EQ(0u, i64from63.countLeadingZeros()); 2339 EXPECT_EQ(64u, i64from63.getActiveBits()); 2340 EXPECT_EQ(63u, i64from63.countTrailingZeros()); 2341 EXPECT_EQ(0u, i64from63.countTrailingOnes()); 2342 EXPECT_EQ(1u, i64from63.countPopulation()); 2343 } 2344 2345 TEST(APIntTest, setAllBits) { 2346 APInt i32(32, 0); 2347 i32.setAllBits(); 2348 EXPECT_EQ(32u, i32.countLeadingOnes()); 2349 EXPECT_EQ(0u, i32.countLeadingZeros()); 2350 EXPECT_EQ(32u, i32.getActiveBits()); 2351 EXPECT_EQ(0u, i32.countTrailingZeros()); 2352 EXPECT_EQ(32u, i32.countTrailingOnes()); 2353 EXPECT_EQ(32u, i32.countPopulation()); 2354 2355 APInt i64(64, 0); 2356 i64.setAllBits(); 2357 EXPECT_EQ(64u, i64.countLeadingOnes()); 2358 EXPECT_EQ(0u, i64.countLeadingZeros()); 2359 EXPECT_EQ(64u, i64.getActiveBits()); 2360 EXPECT_EQ(0u, i64.countTrailingZeros()); 2361 EXPECT_EQ(64u, i64.countTrailingOnes()); 2362 EXPECT_EQ(64u, i64.countPopulation()); 2363 2364 APInt i96(96, 0); 2365 i96.setAllBits(); 2366 EXPECT_EQ(96u, i96.countLeadingOnes()); 2367 EXPECT_EQ(0u, i96.countLeadingZeros()); 2368 EXPECT_EQ(96u, i96.getActiveBits()); 2369 EXPECT_EQ(0u, i96.countTrailingZeros()); 2370 EXPECT_EQ(96u, i96.countTrailingOnes()); 2371 EXPECT_EQ(96u, i96.countPopulation()); 2372 2373 APInt i128(128, 0); 2374 i128.setAllBits(); 2375 EXPECT_EQ(128u, i128.countLeadingOnes()); 2376 EXPECT_EQ(0u, i128.countLeadingZeros()); 2377 EXPECT_EQ(128u, i128.getActiveBits()); 2378 EXPECT_EQ(0u, i128.countTrailingZeros()); 2379 EXPECT_EQ(128u, i128.countTrailingOnes()); 2380 EXPECT_EQ(128u, i128.countPopulation()); 2381 } 2382 2383 TEST(APIntTest, getLoBits) { 2384 APInt i32(32, 0xfa); 2385 i32.setHighBits(1); 2386 EXPECT_EQ(0xa, i32.getLoBits(4)); 2387 APInt i128(128, 0xfa); 2388 i128.setHighBits(1); 2389 EXPECT_EQ(0xa, i128.getLoBits(4)); 2390 } 2391 2392 TEST(APIntTest, getHiBits) { 2393 APInt i32(32, 0xfa); 2394 i32.setHighBits(2); 2395 EXPECT_EQ(0xc, i32.getHiBits(4)); 2396 APInt i128(128, 0xfa); 2397 i128.setHighBits(2); 2398 EXPECT_EQ(0xc, i128.getHiBits(4)); 2399 } 2400 2401 TEST(APIntTest, clearLowBits) { 2402 APInt i64hi32 = APInt::getAllOnes(64); 2403 i64hi32.clearLowBits(32); 2404 EXPECT_EQ(32u, i64hi32.countLeadingOnes()); 2405 EXPECT_EQ(0u, i64hi32.countLeadingZeros()); 2406 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2407 EXPECT_EQ(32u, i64hi32.countTrailingZeros()); 2408 EXPECT_EQ(0u, i64hi32.countTrailingOnes()); 2409 EXPECT_EQ(32u, i64hi32.countPopulation()); 2410 2411 APInt i128hi64 = APInt::getAllOnes(128); 2412 i128hi64.clearLowBits(64); 2413 EXPECT_EQ(64u, i128hi64.countLeadingOnes()); 2414 EXPECT_EQ(0u, i128hi64.countLeadingZeros()); 2415 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2416 EXPECT_EQ(64u, i128hi64.countTrailingZeros()); 2417 EXPECT_EQ(0u, i128hi64.countTrailingOnes()); 2418 EXPECT_EQ(64u, i128hi64.countPopulation()); 2419 2420 APInt i128hi24 = APInt::getAllOnes(128); 2421 i128hi24.clearLowBits(104); 2422 EXPECT_EQ(24u, i128hi24.countLeadingOnes()); 2423 EXPECT_EQ(0u, i128hi24.countLeadingZeros()); 2424 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2425 EXPECT_EQ(104u, i128hi24.countTrailingZeros()); 2426 EXPECT_EQ(0u, i128hi24.countTrailingOnes()); 2427 EXPECT_EQ(24u, i128hi24.countPopulation()); 2428 2429 APInt i128hi104 = APInt::getAllOnes(128); 2430 i128hi104.clearLowBits(24); 2431 EXPECT_EQ(104u, i128hi104.countLeadingOnes()); 2432 EXPECT_EQ(0u, i128hi104.countLeadingZeros()); 2433 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2434 EXPECT_EQ(24u, i128hi104.countTrailingZeros()); 2435 EXPECT_EQ(0u, i128hi104.countTrailingOnes()); 2436 EXPECT_EQ(104u, i128hi104.countPopulation()); 2437 2438 APInt i128hi0 = APInt::getAllOnes(128); 2439 i128hi0.clearLowBits(128); 2440 EXPECT_EQ(0u, i128hi0.countLeadingOnes()); 2441 EXPECT_EQ(128u, i128hi0.countLeadingZeros()); 2442 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2443 EXPECT_EQ(128u, i128hi0.countTrailingZeros()); 2444 EXPECT_EQ(0u, i128hi0.countTrailingOnes()); 2445 EXPECT_EQ(0u, i128hi0.countPopulation()); 2446 2447 APInt i80hi1 = APInt::getAllOnes(80); 2448 i80hi1.clearLowBits(79); 2449 EXPECT_EQ(1u, i80hi1.countLeadingOnes()); 2450 EXPECT_EQ(0u, i80hi1.countLeadingZeros()); 2451 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2452 EXPECT_EQ(79u, i80hi1.countTrailingZeros()); 2453 EXPECT_EQ(0u, i80hi1.countTrailingOnes()); 2454 EXPECT_EQ(1u, i80hi1.countPopulation()); 2455 2456 APInt i32hi16 = APInt::getAllOnes(32); 2457 i32hi16.clearLowBits(16); 2458 EXPECT_EQ(16u, i32hi16.countLeadingOnes()); 2459 EXPECT_EQ(0u, i32hi16.countLeadingZeros()); 2460 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2461 EXPECT_EQ(16u, i32hi16.countTrailingZeros()); 2462 EXPECT_EQ(0u, i32hi16.countTrailingOnes()); 2463 EXPECT_EQ(16u, i32hi16.countPopulation()); 2464 } 2465 2466 TEST(APIntTest, GCD) { 2467 using APIntOps::GreatestCommonDivisor; 2468 2469 for (unsigned Bits : {1, 2, 32, 63, 64, 65}) { 2470 // Test some corner cases near zero. 2471 APInt Zero(Bits, 0), One(Bits, 1); 2472 EXPECT_EQ(GreatestCommonDivisor(Zero, Zero), Zero); 2473 EXPECT_EQ(GreatestCommonDivisor(Zero, One), One); 2474 EXPECT_EQ(GreatestCommonDivisor(One, Zero), One); 2475 EXPECT_EQ(GreatestCommonDivisor(One, One), One); 2476 2477 if (Bits > 1) { 2478 APInt Two(Bits, 2); 2479 EXPECT_EQ(GreatestCommonDivisor(Zero, Two), Two); 2480 EXPECT_EQ(GreatestCommonDivisor(One, Two), One); 2481 EXPECT_EQ(GreatestCommonDivisor(Two, Two), Two); 2482 2483 // Test some corner cases near the highest representable value. 2484 APInt Max(Bits, 0); 2485 Max.setAllBits(); 2486 EXPECT_EQ(GreatestCommonDivisor(Zero, Max), Max); 2487 EXPECT_EQ(GreatestCommonDivisor(One, Max), One); 2488 EXPECT_EQ(GreatestCommonDivisor(Two, Max), One); 2489 EXPECT_EQ(GreatestCommonDivisor(Max, Max), Max); 2490 2491 APInt MaxOver2 = Max.udiv(Two); 2492 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max), One); 2493 // Max - 1 == Max / 2 * 2, because Max is odd. 2494 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max - 1), MaxOver2); 2495 } 2496 } 2497 2498 // Compute the 20th Mersenne prime. 2499 const unsigned BitWidth = 4450; 2500 APInt HugePrime = APInt::getLowBitsSet(BitWidth, 4423); 2501 2502 // 9931 and 123456 are coprime. 2503 APInt A = HugePrime * APInt(BitWidth, 9931); 2504 APInt B = HugePrime * APInt(BitWidth, 123456); 2505 APInt C = GreatestCommonDivisor(A, B); 2506 EXPECT_EQ(C, HugePrime); 2507 } 2508 2509 TEST(APIntTest, LogicalRightShift) { 2510 APInt i256(APInt::getHighBitsSet(256, 2)); 2511 2512 i256.lshrInPlace(1); 2513 EXPECT_EQ(1U, i256.countLeadingZeros()); 2514 EXPECT_EQ(253U, i256.countTrailingZeros()); 2515 EXPECT_EQ(2U, i256.countPopulation()); 2516 2517 i256.lshrInPlace(62); 2518 EXPECT_EQ(63U, i256.countLeadingZeros()); 2519 EXPECT_EQ(191U, i256.countTrailingZeros()); 2520 EXPECT_EQ(2U, i256.countPopulation()); 2521 2522 i256.lshrInPlace(65); 2523 EXPECT_EQ(128U, i256.countLeadingZeros()); 2524 EXPECT_EQ(126U, i256.countTrailingZeros()); 2525 EXPECT_EQ(2U, i256.countPopulation()); 2526 2527 i256.lshrInPlace(64); 2528 EXPECT_EQ(192U, i256.countLeadingZeros()); 2529 EXPECT_EQ(62U, i256.countTrailingZeros()); 2530 EXPECT_EQ(2U, i256.countPopulation()); 2531 2532 i256.lshrInPlace(63); 2533 EXPECT_EQ(255U, i256.countLeadingZeros()); 2534 EXPECT_EQ(0U, i256.countTrailingZeros()); 2535 EXPECT_EQ(1U, i256.countPopulation()); 2536 2537 // Ensure we handle large shifts of multi-word. 2538 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2539 EXPECT_EQ(0, neg_one.lshr(128)); 2540 } 2541 2542 TEST(APIntTest, ArithmeticRightShift) { 2543 APInt i72(APInt::getHighBitsSet(72, 1)); 2544 i72.ashrInPlace(46); 2545 EXPECT_EQ(47U, i72.countLeadingOnes()); 2546 EXPECT_EQ(25U, i72.countTrailingZeros()); 2547 EXPECT_EQ(47U, i72.countPopulation()); 2548 2549 i72 = APInt::getHighBitsSet(72, 1); 2550 i72.ashrInPlace(64); 2551 EXPECT_EQ(65U, i72.countLeadingOnes()); 2552 EXPECT_EQ(7U, i72.countTrailingZeros()); 2553 EXPECT_EQ(65U, i72.countPopulation()); 2554 2555 APInt i128(APInt::getHighBitsSet(128, 1)); 2556 i128.ashrInPlace(64); 2557 EXPECT_EQ(65U, i128.countLeadingOnes()); 2558 EXPECT_EQ(63U, i128.countTrailingZeros()); 2559 EXPECT_EQ(65U, i128.countPopulation()); 2560 2561 // Ensure we handle large shifts of multi-word. 2562 const APInt signmin32(APInt::getSignedMinValue(32)); 2563 EXPECT_TRUE(signmin32.ashr(32).isAllOnes()); 2564 2565 // Ensure we handle large shifts of multi-word. 2566 const APInt umax32(APInt::getSignedMaxValue(32)); 2567 EXPECT_EQ(0, umax32.ashr(32)); 2568 2569 // Ensure we handle large shifts of multi-word. 2570 const APInt signmin128(APInt::getSignedMinValue(128)); 2571 EXPECT_TRUE(signmin128.ashr(128).isAllOnes()); 2572 2573 // Ensure we handle large shifts of multi-word. 2574 const APInt umax128(APInt::getSignedMaxValue(128)); 2575 EXPECT_EQ(0, umax128.ashr(128)); 2576 } 2577 2578 TEST(APIntTest, LeftShift) { 2579 APInt i256(APInt::getLowBitsSet(256, 2)); 2580 2581 i256 <<= 1; 2582 EXPECT_EQ(253U, i256.countLeadingZeros()); 2583 EXPECT_EQ(1U, i256.countTrailingZeros()); 2584 EXPECT_EQ(2U, i256.countPopulation()); 2585 2586 i256 <<= 62; 2587 EXPECT_EQ(191U, i256.countLeadingZeros()); 2588 EXPECT_EQ(63U, i256.countTrailingZeros()); 2589 EXPECT_EQ(2U, i256.countPopulation()); 2590 2591 i256 <<= 65; 2592 EXPECT_EQ(126U, i256.countLeadingZeros()); 2593 EXPECT_EQ(128U, i256.countTrailingZeros()); 2594 EXPECT_EQ(2U, i256.countPopulation()); 2595 2596 i256 <<= 64; 2597 EXPECT_EQ(62U, i256.countLeadingZeros()); 2598 EXPECT_EQ(192U, i256.countTrailingZeros()); 2599 EXPECT_EQ(2U, i256.countPopulation()); 2600 2601 i256 <<= 63; 2602 EXPECT_EQ(0U, i256.countLeadingZeros()); 2603 EXPECT_EQ(255U, i256.countTrailingZeros()); 2604 EXPECT_EQ(1U, i256.countPopulation()); 2605 2606 // Ensure we handle large shifts of multi-word. 2607 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2608 EXPECT_EQ(0, neg_one.shl(128)); 2609 } 2610 2611 TEST(APIntTest, isSubsetOf) { 2612 APInt i32_1(32, 1); 2613 APInt i32_2(32, 2); 2614 APInt i32_3(32, 3); 2615 EXPECT_FALSE(i32_3.isSubsetOf(i32_1)); 2616 EXPECT_TRUE(i32_1.isSubsetOf(i32_3)); 2617 EXPECT_FALSE(i32_2.isSubsetOf(i32_1)); 2618 EXPECT_FALSE(i32_1.isSubsetOf(i32_2)); 2619 EXPECT_TRUE(i32_3.isSubsetOf(i32_3)); 2620 2621 APInt i128_1(128, 1); 2622 APInt i128_2(128, 2); 2623 APInt i128_3(128, 3); 2624 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2625 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2626 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2627 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2628 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2629 2630 i128_1 <<= 64; 2631 i128_2 <<= 64; 2632 i128_3 <<= 64; 2633 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2634 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2635 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2636 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2637 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2638 } 2639 2640 TEST(APIntTest, sext) { 2641 EXPECT_EQ(0, APInt(1, 0).sext(64)); 2642 EXPECT_EQ(~uint64_t(0), APInt(1, 1).sext(64)); 2643 2644 APInt i32_max(APInt::getSignedMaxValue(32).sext(63)); 2645 EXPECT_EQ(i32_max, i32_max.sext(63)); 2646 EXPECT_EQ(32U, i32_max.countLeadingZeros()); 2647 EXPECT_EQ(0U, i32_max.countTrailingZeros()); 2648 EXPECT_EQ(31U, i32_max.countPopulation()); 2649 2650 APInt i32_min(APInt::getSignedMinValue(32).sext(63)); 2651 EXPECT_EQ(i32_min, i32_min.sext(63)); 2652 EXPECT_EQ(32U, i32_min.countLeadingOnes()); 2653 EXPECT_EQ(31U, i32_min.countTrailingZeros()); 2654 EXPECT_EQ(32U, i32_min.countPopulation()); 2655 2656 APInt i32_neg1(APInt(32, ~uint64_t(0)).sext(63)); 2657 EXPECT_EQ(i32_neg1, i32_neg1.sext(63)); 2658 EXPECT_EQ(63U, i32_neg1.countLeadingOnes()); 2659 EXPECT_EQ(0U, i32_neg1.countTrailingZeros()); 2660 EXPECT_EQ(63U, i32_neg1.countPopulation()); 2661 } 2662 2663 TEST(APIntTest, trunc) { 2664 APInt val(32, 0xFFFFFFFF); 2665 EXPECT_EQ(0xFFFF, val.trunc(16)); 2666 EXPECT_EQ(0xFFFFFFFF, val.trunc(32)); 2667 } 2668 2669 TEST(APIntTest, concat) { 2670 APInt Int1(4, 0x1ULL); 2671 APInt Int3(4, 0x3ULL); 2672 2673 EXPECT_EQ(0x31, Int3.concat(Int1)); 2674 EXPECT_EQ(APInt(12, 0x313), Int3.concat(Int1).concat(Int3)); 2675 EXPECT_EQ(APInt(16, 0x3313), Int3.concat(Int3).concat(Int1).concat(Int3)); 2676 2677 APInt I64(64, 0x3ULL); 2678 EXPECT_EQ(I64, I64.concat(I64).lshr(64).trunc(64)); 2679 2680 APInt I65(65, 0x3ULL); 2681 APInt I0 = APInt::getZeroWidth(); 2682 EXPECT_EQ(I65, I65.concat(I0)); 2683 EXPECT_EQ(I65, I0.concat(I65)); 2684 } 2685 2686 TEST(APIntTest, multiply) { 2687 APInt i64(64, 1234); 2688 2689 EXPECT_EQ(7006652, i64 * 5678); 2690 EXPECT_EQ(7006652, 5678 * i64); 2691 2692 APInt i128 = APInt::getOneBitSet(128, 64); 2693 APInt i128_1234(128, 1234); 2694 i128_1234 <<= 64; 2695 EXPECT_EQ(i128_1234, i128 * 1234); 2696 EXPECT_EQ(i128_1234, 1234 * i128); 2697 2698 APInt i96 = APInt::getOneBitSet(96, 64); 2699 i96 *= ~0ULL; 2700 EXPECT_EQ(32U, i96.countLeadingOnes()); 2701 EXPECT_EQ(32U, i96.countPopulation()); 2702 EXPECT_EQ(64U, i96.countTrailingZeros()); 2703 } 2704 2705 TEST(APIntTest, RoundingUDiv) { 2706 for (uint64_t Ai = 1; Ai <= 255; Ai++) { 2707 APInt A(8, Ai); 2708 APInt Zero(8, 0); 2709 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::UP)); 2710 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::DOWN)); 2711 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2712 2713 for (uint64_t Bi = 1; Bi <= 255; Bi++) { 2714 APInt B(8, Bi); 2715 { 2716 APInt Quo = APIntOps::RoundingUDiv(A, B, APInt::Rounding::UP); 2717 auto Prod = Quo.zext(16) * B.zext(16); 2718 EXPECT_TRUE(Prod.uge(Ai)); 2719 if (Prod.ugt(Ai)) { 2720 EXPECT_TRUE(((Quo - 1).zext(16) * B.zext(16)).ult(Ai)); 2721 } 2722 } 2723 { 2724 APInt Quo = A.udiv(B); 2725 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2726 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::DOWN)); 2727 } 2728 } 2729 } 2730 } 2731 2732 TEST(APIntTest, RoundingSDiv) { 2733 for (int64_t Ai = -128; Ai <= 127; Ai++) { 2734 APInt A(8, Ai); 2735 2736 if (Ai != 0) { 2737 APInt Zero(8, 0); 2738 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::UP)); 2739 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::DOWN)); 2740 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2741 } 2742 2743 for (int64_t Bi = -128; Bi <= 127; Bi++) { 2744 if (Bi == 0) 2745 continue; 2746 2747 APInt B(8, Bi); 2748 APInt QuoTowardZero = A.sdiv(B); 2749 { 2750 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::UP); 2751 if (A.srem(B).isNullValue()) { 2752 EXPECT_EQ(QuoTowardZero, Quo); 2753 } else if (A.isNegative() != 2754 B.isNegative()) { // if the math quotient is negative. 2755 EXPECT_EQ(QuoTowardZero, Quo); 2756 } else { 2757 EXPECT_EQ(QuoTowardZero + 1, Quo); 2758 } 2759 } 2760 { 2761 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::DOWN); 2762 if (A.srem(B).isNullValue()) { 2763 EXPECT_EQ(QuoTowardZero, Quo); 2764 } else if (A.isNegative() != 2765 B.isNegative()) { // if the math quotient is negative. 2766 EXPECT_EQ(QuoTowardZero - 1, Quo); 2767 } else { 2768 EXPECT_EQ(QuoTowardZero, Quo); 2769 } 2770 } 2771 EXPECT_EQ(QuoTowardZero, 2772 APIntOps::RoundingSDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2773 } 2774 } 2775 } 2776 2777 TEST(APIntTest, umul_ov) { 2778 const std::pair<uint64_t, uint64_t> Overflows[] = { 2779 {0x8000000000000000, 2}, 2780 {0x5555555555555556, 3}, 2781 {4294967296, 4294967296}, 2782 {4294967295, 4294967298}, 2783 }; 2784 const std::pair<uint64_t, uint64_t> NonOverflows[] = { 2785 {0x7fffffffffffffff, 2}, 2786 {0x5555555555555555, 3}, 2787 {4294967295, 4294967297}, 2788 }; 2789 2790 bool Overflow; 2791 for (auto &X : Overflows) { 2792 APInt A(64, X.first); 2793 APInt B(64, X.second); 2794 (void)A.umul_ov(B, Overflow); 2795 EXPECT_TRUE(Overflow); 2796 } 2797 for (auto &X : NonOverflows) { 2798 APInt A(64, X.first); 2799 APInt B(64, X.second); 2800 (void)A.umul_ov(B, Overflow); 2801 EXPECT_FALSE(Overflow); 2802 } 2803 2804 for (unsigned Bits = 1; Bits <= 5; ++Bits) 2805 for (unsigned A = 0; A != 1u << Bits; ++A) 2806 for (unsigned B = 0; B != 1u << Bits; ++B) { 2807 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 2808 APInt Narrow = N1.umul_ov(N2, Overflow); 2809 APInt Wide = N1.zext(2 * Bits) * N2.zext(2 * Bits); 2810 EXPECT_EQ(Wide.trunc(Bits), Narrow); 2811 EXPECT_EQ(Narrow.zext(2 * Bits) != Wide, Overflow); 2812 } 2813 } 2814 2815 TEST(APIntTest, smul_ov) { 2816 for (unsigned Bits = 1; Bits <= 5; ++Bits) 2817 for (unsigned A = 0; A != 1u << Bits; ++A) 2818 for (unsigned B = 0; B != 1u << Bits; ++B) { 2819 bool Overflow; 2820 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 2821 APInt Narrow = N1.smul_ov(N2, Overflow); 2822 APInt Wide = N1.sext(2 * Bits) * N2.sext(2 * Bits); 2823 EXPECT_EQ(Wide.trunc(Bits), Narrow); 2824 EXPECT_EQ(Narrow.sext(2 * Bits) != Wide, Overflow); 2825 } 2826 } 2827 2828 TEST(APIntTest, SolveQuadraticEquationWrap) { 2829 // Verify that "Solution" is the first non-negative integer that solves 2830 // Ax^2 + Bx + C = "0 or overflow", i.e. that it is a correct solution 2831 // as calculated by SolveQuadraticEquationWrap. 2832 auto Validate = [] (int A, int B, int C, unsigned Width, int Solution) { 2833 int Mask = (1 << Width) - 1; 2834 2835 // Solution should be non-negative. 2836 EXPECT_GE(Solution, 0); 2837 2838 auto OverflowBits = [] (int64_t V, unsigned W) { 2839 return V & -(1 << W); 2840 }; 2841 2842 int64_t Over0 = OverflowBits(C, Width); 2843 2844 auto IsZeroOrOverflow = [&] (int X) { 2845 int64_t ValueAtX = A*X*X + B*X + C; 2846 int64_t OverX = OverflowBits(ValueAtX, Width); 2847 return (ValueAtX & Mask) == 0 || OverX != Over0; 2848 }; 2849 2850 auto EquationToString = [&] (const char *X_str) { 2851 return (Twine(A) + Twine(X_str) + Twine("^2 + ") + Twine(B) + 2852 Twine(X_str) + Twine(" + ") + Twine(C) + Twine(", bitwidth: ") + 2853 Twine(Width)).str(); 2854 }; 2855 2856 auto IsSolution = [&] (const char *X_str, int X) { 2857 if (IsZeroOrOverflow(X)) 2858 return ::testing::AssertionSuccess() 2859 << X << " is a solution of " << EquationToString(X_str); 2860 return ::testing::AssertionFailure() 2861 << X << " is not an expected solution of " 2862 << EquationToString(X_str); 2863 }; 2864 2865 auto IsNotSolution = [&] (const char *X_str, int X) { 2866 if (!IsZeroOrOverflow(X)) 2867 return ::testing::AssertionSuccess() 2868 << X << " is not a solution of " << EquationToString(X_str); 2869 return ::testing::AssertionFailure() 2870 << X << " is an unexpected solution of " 2871 << EquationToString(X_str); 2872 }; 2873 2874 // This is the important part: make sure that there is no solution that 2875 // is less than the calculated one. 2876 if (Solution > 0) { 2877 for (int X = 1; X < Solution-1; ++X) 2878 EXPECT_PRED_FORMAT1(IsNotSolution, X); 2879 } 2880 2881 // Verify that the calculated solution is indeed a solution. 2882 EXPECT_PRED_FORMAT1(IsSolution, Solution); 2883 }; 2884 2885 // Generate all possible quadratic equations with Width-bit wide integer 2886 // coefficients, get the solution from SolveQuadraticEquationWrap, and 2887 // verify that the solution is correct. 2888 auto Iterate = [&] (unsigned Width) { 2889 assert(1 < Width && Width < 32); 2890 int Low = -(1 << (Width-1)); 2891 int High = (1 << (Width-1)); 2892 2893 for (int A = Low; A != High; ++A) { 2894 if (A == 0) 2895 continue; 2896 for (int B = Low; B != High; ++B) { 2897 for (int C = Low; C != High; ++C) { 2898 Optional<APInt> S = APIntOps::SolveQuadraticEquationWrap( 2899 APInt(Width, A), APInt(Width, B), 2900 APInt(Width, C), Width); 2901 if (S) 2902 Validate(A, B, C, Width, S->getSExtValue()); 2903 } 2904 } 2905 } 2906 }; 2907 2908 // Test all widths in [2..6]. 2909 for (unsigned i = 2; i <= 6; ++i) 2910 Iterate(i); 2911 } 2912 2913 TEST(APIntTest, MultiplicativeInverseExaustive) { 2914 for (unsigned BitWidth = 1; BitWidth <= 16; ++BitWidth) { 2915 for (unsigned Value = 0; Value < (1u << BitWidth); ++Value) { 2916 APInt V = APInt(BitWidth, Value); 2917 APInt MulInv = 2918 V.zext(BitWidth + 1) 2919 .multiplicativeInverse(APInt::getSignedMinValue(BitWidth + 1)) 2920 .trunc(BitWidth); 2921 APInt One = V * MulInv; 2922 if (!V.isNullValue() && V.countTrailingZeros() == 0) { 2923 // Multiplicative inverse exists for all odd numbers. 2924 EXPECT_TRUE(One.isOneValue()); 2925 } else { 2926 // Multiplicative inverse does not exist for even numbers (and 0). 2927 EXPECT_TRUE(MulInv.isNullValue()); 2928 } 2929 } 2930 } 2931 } 2932 2933 TEST(APIntTest, GetMostSignificantDifferentBit) { 2934 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 0)), 2935 std::nullopt); 2936 EXPECT_EQ( 2937 APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 42)), 2938 std::nullopt); 2939 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 1)), 2940 0u); 2941 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 2)), 2942 1u); 2943 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 3)), 2944 1u); 2945 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 0)), 2946 0u); 2947 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 1)), 2948 std::nullopt); 2949 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 2)), 2950 1u); 2951 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 3)), 2952 1u); 2953 EXPECT_EQ( 2954 *APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 112)), 2955 6u); 2956 } 2957 2958 TEST(APIntTest, GetMostSignificantDifferentBitExaustive) { 2959 auto GetHighestDifferentBitBruteforce = 2960 [](const APInt &V0, const APInt &V1) -> llvm::Optional<unsigned> { 2961 assert(V0.getBitWidth() == V1.getBitWidth() && "Must have same bitwidth"); 2962 if (V0 == V1) 2963 return std::nullopt; // Bitwise identical. 2964 // There is a mismatch. Let's find the most significant different bit. 2965 for (int Bit = V0.getBitWidth() - 1; Bit >= 0; --Bit) { 2966 if (V0[Bit] == V1[Bit]) 2967 continue; 2968 return Bit; 2969 } 2970 llvm_unreachable("Must have found bit mismatch."); 2971 }; 2972 2973 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) { 2974 for (unsigned V0 = 0; V0 < (1u << BitWidth); ++V0) { 2975 for (unsigned V1 = 0; V1 < (1u << BitWidth); ++V1) { 2976 APInt A = APInt(BitWidth, V0); 2977 APInt B = APInt(BitWidth, V1); 2978 2979 auto Bit = APIntOps::GetMostSignificantDifferentBit(A, B); 2980 EXPECT_EQ(Bit, GetHighestDifferentBitBruteforce(A, B)); 2981 2982 if (!Bit) 2983 EXPECT_EQ(A, B); 2984 else { 2985 EXPECT_NE(A, B); 2986 for (unsigned NumLowBits = 0; NumLowBits <= BitWidth; ++NumLowBits) { 2987 APInt Adash = A; 2988 Adash.clearLowBits(NumLowBits); 2989 APInt Bdash = B; 2990 Bdash.clearLowBits(NumLowBits); 2991 // Clearing only low bits up to and including *Bit is sufficient 2992 // to make values equal. 2993 if (NumLowBits >= 1 + *Bit) 2994 EXPECT_EQ(Adash, Bdash); 2995 else 2996 EXPECT_NE(Adash, Bdash); 2997 } 2998 } 2999 } 3000 } 3001 } 3002 } 3003 3004 TEST(APIntTest, SignbitZeroChecks) { 3005 EXPECT_TRUE(APInt(8, -1).isNegative()); 3006 EXPECT_FALSE(APInt(8, -1).isNonNegative()); 3007 EXPECT_FALSE(APInt(8, -1).isStrictlyPositive()); 3008 EXPECT_TRUE(APInt(8, -1).isNonPositive()); 3009 3010 EXPECT_FALSE(APInt(8, 0).isNegative()); 3011 EXPECT_TRUE(APInt(8, 0).isNonNegative()); 3012 EXPECT_FALSE(APInt(8, 0).isStrictlyPositive()); 3013 EXPECT_TRUE(APInt(8, 0).isNonPositive()); 3014 3015 EXPECT_FALSE(APInt(8, 1).isNegative()); 3016 EXPECT_TRUE(APInt(8, 1).isNonNegative()); 3017 EXPECT_TRUE(APInt(8, 1).isStrictlyPositive()); 3018 EXPECT_FALSE(APInt(8, 1).isNonPositive()); 3019 } 3020 3021 TEST(APIntTest, ZeroWidth) { 3022 // Zero width Constructors. 3023 auto ZW = APInt::getZeroWidth(); 3024 EXPECT_EQ(0U, ZW.getBitWidth()); 3025 EXPECT_EQ(0U, APInt(0, ArrayRef<uint64_t>({0, 1, 2})).getBitWidth()); 3026 EXPECT_EQ(0U, APInt(0, "0", 10).getBitWidth()); 3027 3028 // Default constructor is single bit wide. 3029 EXPECT_EQ(1U, APInt().getBitWidth()); 3030 3031 // Copy ctor (move is down below). 3032 APInt ZW2(ZW); 3033 EXPECT_EQ(0U, ZW2.getBitWidth()); 3034 // Assignment 3035 ZW = ZW2; 3036 EXPECT_EQ(0U, ZW.getBitWidth()); 3037 3038 // Methods like getLowBitsSet work with zero bits. 3039 EXPECT_EQ(0U, APInt::getLowBitsSet(0, 0).getBitWidth()); 3040 EXPECT_EQ(0U, APInt::getSplat(0, ZW).getBitWidth()); 3041 EXPECT_EQ(0U, APInt(4, 10).extractBits(0, 2).getBitWidth()); 3042 3043 // Logical operators. 3044 ZW |= ZW2; 3045 ZW &= ZW2; 3046 ZW ^= ZW2; 3047 ZW |= 42; // These ignore high bits of the literal. 3048 ZW &= 42; 3049 ZW ^= 42; 3050 EXPECT_EQ(1, ZW.isIntN(0)); 3051 3052 // Modulo Arithmetic. Divide/Rem aren't defined on division by zero, so they 3053 // aren't supported. 3054 ZW += ZW2; 3055 ZW -= ZW2; 3056 ZW *= ZW2; 3057 3058 // Logical Shifts and rotates, the amount must be <= bitwidth. 3059 ZW <<= 0; 3060 ZW.lshrInPlace(0); 3061 (void)ZW.rotl(0); 3062 (void)ZW.rotr(0); 3063 3064 // Comparisons. 3065 EXPECT_EQ(1, ZW == ZW); 3066 EXPECT_EQ(0, ZW != ZW); 3067 EXPECT_EQ(0, ZW.ult(ZW)); 3068 3069 // Mutations. 3070 ZW.setBitsWithWrap(0, 0); 3071 ZW.setBits(0, 0); 3072 ZW.clearAllBits(); 3073 ZW.flipAllBits(); 3074 3075 // Leading, trailing, ctpop, etc 3076 EXPECT_EQ(0U, ZW.countLeadingZeros()); 3077 EXPECT_EQ(0U, ZW.countLeadingOnes()); 3078 EXPECT_EQ(0U, ZW.countPopulation()); 3079 EXPECT_EQ(0U, ZW.reverseBits().getBitWidth()); 3080 EXPECT_EQ(0U, ZW.getHiBits(0).getBitWidth()); 3081 EXPECT_EQ(0U, ZW.getLoBits(0).getBitWidth()); 3082 EXPECT_EQ(0, ZW.zext(4)); 3083 EXPECT_EQ(0U, APInt(4, 3).trunc(0).getBitWidth()); 3084 EXPECT_TRUE(ZW.isAllOnes()); 3085 3086 // Zero extension. 3087 EXPECT_EQ(0U, ZW.getZExtValue()); 3088 3089 SmallString<42> STR; 3090 ZW.toStringUnsigned(STR); 3091 EXPECT_EQ("0", STR); 3092 3093 // Move ctor (keep at the end of the method since moves are destructive). 3094 APInt MZW1(std::move(ZW)); 3095 EXPECT_EQ(0U, MZW1.getBitWidth()); 3096 // Move Assignment 3097 MZW1 = std::move(ZW2); 3098 EXPECT_EQ(0U, MZW1.getBitWidth()); 3099 } 3100 3101 TEST(APIntTest, ScaleBitMask) { 3102 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8), APInt(8, 0x00)); 3103 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8), APInt(8, 0x0F)); 3104 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8), APInt(8, 0xF0)); 3105 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8), APInt(8, 0xFF)); 3106 3107 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4), APInt(4, 0x00)); 3108 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4), APInt(4, 0x0F)); 3109 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4), APInt(4, 0x0E)); 3110 3111 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 8), APInt(8, 0x00)); 3112 3113 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getNullValue(1024), 4096), 3114 APInt::getNullValue(4096)); 3115 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getAllOnes(4096), 256), 3116 APInt::getAllOnes(256)); 3117 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getOneBitSet(4096, 32), 256), 3118 APInt::getOneBitSet(256, 2)); 3119 3120 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8, true), APInt(8, 0x00)); 3121 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8, true), APInt(8, 0x0F)); 3122 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8, true), APInt(8, 0xF0)); 3123 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8, true), APInt(8, 0xFF)); 3124 3125 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4, true), APInt(4, 0x00)); 3126 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4, true), APInt(4, 0x0F)); 3127 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4, true), APInt(4, 0x08)); 3128 } 3129 3130 TEST(APIntTest, DenseMap) { 3131 DenseMap<APInt, int> Map; 3132 APInt ZeroWidthInt(0, 0, false); 3133 Map.insert({ZeroWidthInt, 0}); 3134 Map.find(ZeroWidthInt); 3135 } 3136 3137 } // end anonymous namespace 3138