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 "llvm/Support/Alignment.h" 15 #include "gtest/gtest.h" 16 #include <array> 17 #include <optional> 18 19 using namespace llvm; 20 21 namespace { 22 23 TEST(APIntTest, ValueInit) { 24 APInt Zero = APInt(); 25 EXPECT_TRUE(!Zero); 26 EXPECT_TRUE(!Zero.zext(64)); 27 EXPECT_TRUE(!Zero.sext(64)); 28 } 29 30 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 31 TEST(APIntTest, ShiftLeftByZero) { 32 APInt One = APInt::getZero(65) + 1; 33 APInt Shl = One.shl(0); 34 EXPECT_TRUE(Shl[0]); 35 EXPECT_FALSE(Shl[1]); 36 } 37 38 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 39 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 40 EXPECT_EQ(neg_one, neg_one.ashr(7)); 41 } 42 43 TEST(APIntTest, i128_NegativeCount) { 44 APInt Minus3(128, static_cast<uint64_t>(-3), true); 45 EXPECT_EQ(126u, Minus3.countl_one()); 46 EXPECT_EQ(-3, Minus3.getSExtValue()); 47 48 APInt Minus1(128, static_cast<uint64_t>(-1), true); 49 EXPECT_EQ(0u, Minus1.countl_zero()); 50 EXPECT_EQ(128u, Minus1.countl_one()); 51 EXPECT_EQ(128u, Minus1.getActiveBits()); 52 EXPECT_EQ(0u, Minus1.countr_zero()); 53 EXPECT_EQ(128u, Minus1.countr_one()); 54 EXPECT_EQ(128u, Minus1.popcount()); 55 EXPECT_EQ(-1, Minus1.getSExtValue()); 56 } 57 58 TEST(APIntTest, i33_Count) { 59 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 60 EXPECT_EQ(0u, i33minus2.countl_zero()); 61 EXPECT_EQ(32u, i33minus2.countl_one()); 62 EXPECT_EQ(33u, i33minus2.getActiveBits()); 63 EXPECT_EQ(1u, i33minus2.countr_zero()); 64 EXPECT_EQ(32u, i33minus2.popcount()); 65 EXPECT_EQ(-2, i33minus2.getSExtValue()); 66 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 67 } 68 69 TEST(APIntTest, i61_Count) { 70 APInt i61(61, 1 << 15); 71 EXPECT_EQ(45u, i61.countl_zero()); 72 EXPECT_EQ(0u, i61.countl_one()); 73 EXPECT_EQ(16u, i61.getActiveBits()); 74 EXPECT_EQ(15u, i61.countr_zero()); 75 EXPECT_EQ(1u, i61.popcount()); 76 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue()); 77 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue()); 78 79 i61.setBits(8, 19); 80 EXPECT_EQ(42u, i61.countl_zero()); 81 EXPECT_EQ(0u, i61.countl_one()); 82 EXPECT_EQ(19u, i61.getActiveBits()); 83 EXPECT_EQ(8u, i61.countr_zero()); 84 EXPECT_EQ(11u, i61.popcount()); 85 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue()); 86 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue()); 87 } 88 89 TEST(APIntTest, i65_Count) { 90 APInt i65(65, 0, true); 91 EXPECT_EQ(65u, i65.countl_zero()); 92 EXPECT_EQ(0u, i65.countl_one()); 93 EXPECT_EQ(0u, i65.getActiveBits()); 94 EXPECT_EQ(1u, i65.getActiveWords()); 95 EXPECT_EQ(65u, i65.countr_zero()); 96 EXPECT_EQ(0u, i65.popcount()); 97 98 APInt i65minus(65, 0, true); 99 i65minus.setBit(64); 100 EXPECT_EQ(0u, i65minus.countl_zero()); 101 EXPECT_EQ(1u, i65minus.countl_one()); 102 EXPECT_EQ(65u, i65minus.getActiveBits()); 103 EXPECT_EQ(64u, i65minus.countr_zero()); 104 EXPECT_EQ(1u, i65minus.popcount()); 105 } 106 107 TEST(APIntTest, i128_PositiveCount) { 108 APInt u128max = APInt::getAllOnes(128); 109 EXPECT_EQ(128u, u128max.countl_one()); 110 EXPECT_EQ(0u, u128max.countl_zero()); 111 EXPECT_EQ(128u, u128max.getActiveBits()); 112 EXPECT_EQ(0u, u128max.countr_zero()); 113 EXPECT_EQ(128u, u128max.countr_one()); 114 EXPECT_EQ(128u, u128max.popcount()); 115 116 APInt u64max(128, static_cast<uint64_t>(-1), false); 117 EXPECT_EQ(64u, u64max.countl_zero()); 118 EXPECT_EQ(0u, u64max.countl_one()); 119 EXPECT_EQ(64u, u64max.getActiveBits()); 120 EXPECT_EQ(0u, u64max.countr_zero()); 121 EXPECT_EQ(64u, u64max.countr_one()); 122 EXPECT_EQ(64u, u64max.popcount()); 123 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 124 125 APInt zero(128, 0, true); 126 EXPECT_EQ(128u, zero.countl_zero()); 127 EXPECT_EQ(0u, zero.countl_one()); 128 EXPECT_EQ(0u, zero.getActiveBits()); 129 EXPECT_EQ(128u, zero.countr_zero()); 130 EXPECT_EQ(0u, zero.countr_one()); 131 EXPECT_EQ(0u, zero.popcount()); 132 EXPECT_EQ(0u, zero.getSExtValue()); 133 EXPECT_EQ(0u, zero.getZExtValue()); 134 135 APInt one(128, 1, true); 136 EXPECT_EQ(127u, one.countl_zero()); 137 EXPECT_EQ(0u, one.countl_one()); 138 EXPECT_EQ(1u, one.getActiveBits()); 139 EXPECT_EQ(0u, one.countr_zero()); 140 EXPECT_EQ(1u, one.countr_one()); 141 EXPECT_EQ(1u, one.popcount()); 142 EXPECT_EQ(1, one.getSExtValue()); 143 EXPECT_EQ(1u, one.getZExtValue()); 144 145 APInt s128(128, 2, true); 146 EXPECT_EQ(126u, s128.countl_zero()); 147 EXPECT_EQ(0u, s128.countl_one()); 148 EXPECT_EQ(2u, s128.getActiveBits()); 149 EXPECT_EQ(1u, s128.countr_zero()); 150 EXPECT_EQ(0u, s128.countr_one()); 151 EXPECT_EQ(1u, s128.popcount()); 152 EXPECT_EQ(2, s128.getSExtValue()); 153 EXPECT_EQ(2u, s128.getZExtValue()); 154 155 // NOP Test 156 s128.setBits(42, 42); 157 EXPECT_EQ(126u, s128.countl_zero()); 158 EXPECT_EQ(0u, s128.countl_one()); 159 EXPECT_EQ(2u, s128.getActiveBits()); 160 EXPECT_EQ(1u, s128.countr_zero()); 161 EXPECT_EQ(0u, s128.countr_one()); 162 EXPECT_EQ(1u, s128.popcount()); 163 EXPECT_EQ(2, s128.getSExtValue()); 164 EXPECT_EQ(2u, s128.getZExtValue()); 165 166 s128.setBits(3, 32); 167 EXPECT_EQ(96u, s128.countl_zero()); 168 EXPECT_EQ(0u, s128.countl_one()); 169 EXPECT_EQ(32u, s128.getActiveBits()); 170 EXPECT_EQ(33u, s128.getSignificantBits()); 171 EXPECT_EQ(1u, s128.countr_zero()); 172 EXPECT_EQ(0u, s128.countr_one()); 173 EXPECT_EQ(30u, s128.popcount()); 174 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 175 176 s128.setBits(62, 128); 177 EXPECT_EQ(0u, s128.countl_zero()); 178 EXPECT_EQ(66u, s128.countl_one()); 179 EXPECT_EQ(128u, s128.getActiveBits()); 180 EXPECT_EQ(63u, s128.getSignificantBits()); 181 EXPECT_EQ(1u, s128.countr_zero()); 182 EXPECT_EQ(0u, s128.countr_one()); 183 EXPECT_EQ(96u, s128.popcount()); 184 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 185 static_cast<uint32_t>((~0u << 3) | 2)), 186 s128.getSExtValue()); 187 } 188 189 TEST(APIntTest, i256) { 190 APInt s256(256, 15, true); 191 EXPECT_EQ(252u, s256.countl_zero()); 192 EXPECT_EQ(0u, s256.countl_one()); 193 EXPECT_EQ(4u, s256.getActiveBits()); 194 EXPECT_EQ(0u, s256.countr_zero()); 195 EXPECT_EQ(4u, s256.countr_one()); 196 EXPECT_EQ(4u, s256.popcount()); 197 EXPECT_EQ(15, s256.getSExtValue()); 198 EXPECT_EQ(15u, s256.getZExtValue()); 199 200 s256.setBits(62, 66); 201 EXPECT_EQ(190u, s256.countl_zero()); 202 EXPECT_EQ(0u, s256.countl_one()); 203 EXPECT_EQ(66u, s256.getActiveBits()); 204 EXPECT_EQ(67u, s256.getSignificantBits()); 205 EXPECT_EQ(0u, s256.countr_zero()); 206 EXPECT_EQ(4u, s256.countr_one()); 207 EXPECT_EQ(8u, s256.popcount()); 208 209 s256.setBits(60, 256); 210 EXPECT_EQ(0u, s256.countl_zero()); 211 EXPECT_EQ(196u, s256.countl_one()); 212 EXPECT_EQ(256u, s256.getActiveBits()); 213 EXPECT_EQ(61u, s256.getSignificantBits()); 214 EXPECT_EQ(0u, s256.countr_zero()); 215 EXPECT_EQ(4u, s256.countr_one()); 216 EXPECT_EQ(200u, s256.popcount()); 217 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 218 } 219 220 TEST(APIntTest, i1) { 221 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 222 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 223 const APInt zero(1, 0); 224 const APInt one(1, 1); 225 const APInt two(1, 2); 226 227 EXPECT_EQ(0, neg_two.getSExtValue()); 228 EXPECT_EQ(-1, neg_one.getSExtValue()); 229 EXPECT_EQ(1u, neg_one.getZExtValue()); 230 EXPECT_EQ(0u, zero.getZExtValue()); 231 EXPECT_EQ(-1, one.getSExtValue()); 232 EXPECT_EQ(1u, one.getZExtValue()); 233 EXPECT_EQ(0u, two.getZExtValue()); 234 EXPECT_EQ(0, two.getSExtValue()); 235 236 // Basic equalities for 1-bit values. 237 EXPECT_EQ(zero, two); 238 EXPECT_EQ(zero, neg_two); 239 EXPECT_EQ(one, neg_one); 240 EXPECT_EQ(two, neg_two); 241 242 // Min/max signed values. 243 EXPECT_TRUE(zero.isMaxSignedValue()); 244 EXPECT_FALSE(one.isMaxSignedValue()); 245 EXPECT_FALSE(zero.isMinSignedValue()); 246 EXPECT_TRUE(one.isMinSignedValue()); 247 248 // Additions. 249 EXPECT_EQ(two, one + one); 250 EXPECT_EQ(zero, neg_one + one); 251 EXPECT_EQ(neg_two, neg_one + neg_one); 252 253 // Subtractions. 254 EXPECT_EQ(neg_two, neg_one - one); 255 EXPECT_EQ(two, one - neg_one); 256 EXPECT_EQ(zero, one - one); 257 258 // And 259 EXPECT_EQ(zero, zero & zero); 260 EXPECT_EQ(zero, one & zero); 261 EXPECT_EQ(zero, zero & one); 262 EXPECT_EQ(one, one & one); 263 EXPECT_EQ(zero, zero & zero); 264 EXPECT_EQ(zero, neg_one & zero); 265 EXPECT_EQ(zero, zero & neg_one); 266 EXPECT_EQ(neg_one, neg_one & neg_one); 267 268 // Or 269 EXPECT_EQ(zero, zero | zero); 270 EXPECT_EQ(one, one | zero); 271 EXPECT_EQ(one, zero | one); 272 EXPECT_EQ(one, one | one); 273 EXPECT_EQ(zero, zero | zero); 274 EXPECT_EQ(neg_one, neg_one | zero); 275 EXPECT_EQ(neg_one, zero | neg_one); 276 EXPECT_EQ(neg_one, neg_one | neg_one); 277 278 // Xor 279 EXPECT_EQ(zero, zero ^ zero); 280 EXPECT_EQ(one, one ^ zero); 281 EXPECT_EQ(one, zero ^ one); 282 EXPECT_EQ(zero, one ^ one); 283 EXPECT_EQ(zero, zero ^ zero); 284 EXPECT_EQ(neg_one, neg_one ^ zero); 285 EXPECT_EQ(neg_one, zero ^ neg_one); 286 EXPECT_EQ(zero, neg_one ^ neg_one); 287 288 // Shifts. 289 EXPECT_EQ(zero, one << one); 290 EXPECT_EQ(one, one << zero); 291 EXPECT_EQ(zero, one.shl(1)); 292 EXPECT_EQ(one, one.shl(0)); 293 EXPECT_EQ(zero, one.lshr(1)); 294 EXPECT_EQ(one, one.ashr(1)); 295 296 // Rotates. 297 EXPECT_EQ(one, one.rotl(0)); 298 EXPECT_EQ(one, one.rotl(1)); 299 EXPECT_EQ(one, one.rotr(0)); 300 EXPECT_EQ(one, one.rotr(1)); 301 302 // Multiplies. 303 EXPECT_EQ(neg_one, neg_one * one); 304 EXPECT_EQ(neg_one, one * neg_one); 305 EXPECT_EQ(one, neg_one * neg_one); 306 EXPECT_EQ(one, one * one); 307 308 // Divides. 309 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 310 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 311 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 312 EXPECT_EQ(one, one.sdiv(one)); 313 314 EXPECT_EQ(neg_one, one.udiv(neg_one)); 315 EXPECT_EQ(neg_one, neg_one.udiv(one)); 316 EXPECT_EQ(one, neg_one.udiv(neg_one)); 317 EXPECT_EQ(one, one.udiv(one)); 318 319 // Remainders. 320 EXPECT_EQ(zero, neg_one.srem(one)); 321 EXPECT_EQ(zero, neg_one.urem(one)); 322 EXPECT_EQ(zero, one.srem(neg_one)); 323 324 // sdivrem 325 { 326 APInt q(8, 0); 327 APInt r(8, 0); 328 APInt one(8, 1); 329 APInt two(8, 2); 330 APInt nine(8, 9); 331 APInt four(8, 4); 332 333 EXPECT_EQ(nine.srem(two), one); 334 EXPECT_EQ(nine.srem(-two), one); 335 EXPECT_EQ((-nine).srem(two), -one); 336 EXPECT_EQ((-nine).srem(-two), -one); 337 338 APInt::sdivrem(nine, two, q, r); 339 EXPECT_EQ(four, q); 340 EXPECT_EQ(one, r); 341 APInt::sdivrem(-nine, two, q, r); 342 EXPECT_EQ(-four, q); 343 EXPECT_EQ(-one, r); 344 APInt::sdivrem(nine, -two, q, r); 345 EXPECT_EQ(-four, q); 346 EXPECT_EQ(one, r); 347 APInt::sdivrem(-nine, -two, q, r); 348 EXPECT_EQ(four, q); 349 EXPECT_EQ(-one, r); 350 } 351 } 352 353 TEST(APIntTest, compare) { 354 std::array<APInt, 5> testVals{{ 355 APInt{16, 2}, 356 APInt{16, 1}, 357 APInt{16, 0}, 358 APInt{16, (uint64_t)-1, true}, 359 APInt{16, (uint64_t)-2, true}, 360 }}; 361 362 for (auto &arg1 : testVals) 363 for (auto &arg2 : testVals) { 364 auto uv1 = arg1.getZExtValue(); 365 auto uv2 = arg2.getZExtValue(); 366 auto sv1 = arg1.getSExtValue(); 367 auto sv2 = arg2.getSExtValue(); 368 369 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 370 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 371 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 372 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 373 374 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 375 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 376 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 377 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 378 379 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 380 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 381 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 382 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 383 384 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 385 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 386 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 387 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 388 } 389 } 390 391 TEST(APIntTest, compareWithRawIntegers) { 392 EXPECT_TRUE(!APInt(8, 1).uge(256)); 393 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 394 EXPECT_TRUE( APInt(8, 1).ule(256)); 395 EXPECT_TRUE( APInt(8, 1).ult(256)); 396 EXPECT_TRUE(!APInt(8, 1).sge(256)); 397 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 398 EXPECT_TRUE( APInt(8, 1).sle(256)); 399 EXPECT_TRUE( APInt(8, 1).slt(256)); 400 EXPECT_TRUE(!(APInt(8, 0) == 256)); 401 EXPECT_TRUE( APInt(8, 0) != 256); 402 EXPECT_TRUE(!(APInt(8, 1) == 256)); 403 EXPECT_TRUE( APInt(8, 1) != 256); 404 405 auto uint64max = UINT64_MAX; 406 auto int64max = INT64_MAX; 407 auto int64min = INT64_MIN; 408 409 auto u64 = APInt{128, uint64max}; 410 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 411 auto big = u64 + 1; 412 413 EXPECT_TRUE( u64.uge(uint64max)); 414 EXPECT_TRUE(!u64.ugt(uint64max)); 415 EXPECT_TRUE( u64.ule(uint64max)); 416 EXPECT_TRUE(!u64.ult(uint64max)); 417 EXPECT_TRUE( u64.sge(int64max)); 418 EXPECT_TRUE( u64.sgt(int64max)); 419 EXPECT_TRUE(!u64.sle(int64max)); 420 EXPECT_TRUE(!u64.slt(int64max)); 421 EXPECT_TRUE( u64.sge(int64min)); 422 EXPECT_TRUE( u64.sgt(int64min)); 423 EXPECT_TRUE(!u64.sle(int64min)); 424 EXPECT_TRUE(!u64.slt(int64min)); 425 426 EXPECT_TRUE(u64 == uint64max); 427 EXPECT_TRUE(u64 != int64max); 428 EXPECT_TRUE(u64 != int64min); 429 430 EXPECT_TRUE(!s64.uge(uint64max)); 431 EXPECT_TRUE(!s64.ugt(uint64max)); 432 EXPECT_TRUE( s64.ule(uint64max)); 433 EXPECT_TRUE( s64.ult(uint64max)); 434 EXPECT_TRUE( s64.sge(int64max)); 435 EXPECT_TRUE(!s64.sgt(int64max)); 436 EXPECT_TRUE( s64.sle(int64max)); 437 EXPECT_TRUE(!s64.slt(int64max)); 438 EXPECT_TRUE( s64.sge(int64min)); 439 EXPECT_TRUE( s64.sgt(int64min)); 440 EXPECT_TRUE(!s64.sle(int64min)); 441 EXPECT_TRUE(!s64.slt(int64min)); 442 443 EXPECT_TRUE(s64 != uint64max); 444 EXPECT_TRUE(s64 == int64max); 445 EXPECT_TRUE(s64 != int64min); 446 447 EXPECT_TRUE( big.uge(uint64max)); 448 EXPECT_TRUE( big.ugt(uint64max)); 449 EXPECT_TRUE(!big.ule(uint64max)); 450 EXPECT_TRUE(!big.ult(uint64max)); 451 EXPECT_TRUE( big.sge(int64max)); 452 EXPECT_TRUE( big.sgt(int64max)); 453 EXPECT_TRUE(!big.sle(int64max)); 454 EXPECT_TRUE(!big.slt(int64max)); 455 EXPECT_TRUE( big.sge(int64min)); 456 EXPECT_TRUE( big.sgt(int64min)); 457 EXPECT_TRUE(!big.sle(int64min)); 458 EXPECT_TRUE(!big.slt(int64min)); 459 460 EXPECT_TRUE(big != uint64max); 461 EXPECT_TRUE(big != int64max); 462 EXPECT_TRUE(big != int64min); 463 } 464 465 TEST(APIntTest, compareWithInt64Min) { 466 int64_t edge = INT64_MIN; 467 int64_t edgeP1 = edge + 1; 468 int64_t edgeM1 = INT64_MAX; 469 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 470 471 EXPECT_TRUE(!a.slt(edge)); 472 EXPECT_TRUE( a.sle(edge)); 473 EXPECT_TRUE(!a.sgt(edge)); 474 EXPECT_TRUE( a.sge(edge)); 475 EXPECT_TRUE( a.slt(edgeP1)); 476 EXPECT_TRUE( a.sle(edgeP1)); 477 EXPECT_TRUE(!a.sgt(edgeP1)); 478 EXPECT_TRUE(!a.sge(edgeP1)); 479 EXPECT_TRUE( a.slt(edgeM1)); 480 EXPECT_TRUE( a.sle(edgeM1)); 481 EXPECT_TRUE(!a.sgt(edgeM1)); 482 EXPECT_TRUE(!a.sge(edgeM1)); 483 } 484 485 TEST(APIntTest, compareWithHalfInt64Max) { 486 uint64_t edge = 0x4000000000000000; 487 uint64_t edgeP1 = edge + 1; 488 uint64_t edgeM1 = edge - 1; 489 auto a = APInt{64, edge}; 490 491 EXPECT_TRUE(!a.ult(edge)); 492 EXPECT_TRUE( a.ule(edge)); 493 EXPECT_TRUE(!a.ugt(edge)); 494 EXPECT_TRUE( a.uge(edge)); 495 EXPECT_TRUE( a.ult(edgeP1)); 496 EXPECT_TRUE( a.ule(edgeP1)); 497 EXPECT_TRUE(!a.ugt(edgeP1)); 498 EXPECT_TRUE(!a.uge(edgeP1)); 499 EXPECT_TRUE(!a.ult(edgeM1)); 500 EXPECT_TRUE(!a.ule(edgeM1)); 501 EXPECT_TRUE( a.ugt(edgeM1)); 502 EXPECT_TRUE( a.uge(edgeM1)); 503 504 EXPECT_TRUE(!a.slt(edge)); 505 EXPECT_TRUE( a.sle(edge)); 506 EXPECT_TRUE(!a.sgt(edge)); 507 EXPECT_TRUE( a.sge(edge)); 508 EXPECT_TRUE( a.slt(edgeP1)); 509 EXPECT_TRUE( a.sle(edgeP1)); 510 EXPECT_TRUE(!a.sgt(edgeP1)); 511 EXPECT_TRUE(!a.sge(edgeP1)); 512 EXPECT_TRUE(!a.slt(edgeM1)); 513 EXPECT_TRUE(!a.sle(edgeM1)); 514 EXPECT_TRUE( a.sgt(edgeM1)); 515 EXPECT_TRUE( a.sge(edgeM1)); 516 } 517 518 TEST(APIntTest, compareLargeIntegers) { 519 // Make sure all the combinations of signed comparisons work with big ints. 520 auto One = APInt{128, static_cast<uint64_t>(1), true}; 521 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 522 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 523 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 524 525 EXPECT_TRUE(!One.slt(One)); 526 EXPECT_TRUE(!Two.slt(One)); 527 EXPECT_TRUE(MinusOne.slt(One)); 528 EXPECT_TRUE(MinusTwo.slt(One)); 529 530 EXPECT_TRUE(One.slt(Two)); 531 EXPECT_TRUE(!Two.slt(Two)); 532 EXPECT_TRUE(MinusOne.slt(Two)); 533 EXPECT_TRUE(MinusTwo.slt(Two)); 534 535 EXPECT_TRUE(!One.slt(MinusOne)); 536 EXPECT_TRUE(!Two.slt(MinusOne)); 537 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 538 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 539 540 EXPECT_TRUE(!One.slt(MinusTwo)); 541 EXPECT_TRUE(!Two.slt(MinusTwo)); 542 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 543 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 544 } 545 546 TEST(APIntTest, binaryOpsWithRawIntegers) { 547 // Single word check. 548 uint64_t E1 = 0x2CA7F46BF6569915ULL; 549 APInt A1(64, E1); 550 551 EXPECT_EQ(A1 & E1, E1); 552 EXPECT_EQ(A1 & 0, 0); 553 EXPECT_EQ(A1 & 1, 1); 554 EXPECT_EQ(A1 & 5, 5); 555 EXPECT_EQ(A1 & UINT64_MAX, E1); 556 557 EXPECT_EQ(A1 | E1, E1); 558 EXPECT_EQ(A1 | 0, E1); 559 EXPECT_EQ(A1 | 1, E1); 560 EXPECT_EQ(A1 | 2, E1 | 2); 561 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 562 563 EXPECT_EQ(A1 ^ E1, 0); 564 EXPECT_EQ(A1 ^ 0, E1); 565 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 566 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 567 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 568 569 // Multiword check. 570 uint64_t N = 0xEB6EB136591CBA21ULL; 571 APInt::WordType E2[4] = { 572 N, 573 0x7B9358BD6A33F10AULL, 574 0x7E7FFA5EADD8846ULL, 575 0x305F341CA00B613DULL 576 }; 577 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 578 579 EXPECT_EQ(A2 & N, N); 580 EXPECT_EQ(A2 & 0, 0); 581 EXPECT_EQ(A2 & 1, 1); 582 EXPECT_EQ(A2 & 5, 1); 583 EXPECT_EQ(A2 & UINT64_MAX, N); 584 585 EXPECT_EQ(A2 | N, A2); 586 EXPECT_EQ(A2 | 0, A2); 587 EXPECT_EQ(A2 | 1, A2); 588 EXPECT_EQ(A2 | 2, A2 + 2); 589 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 590 591 EXPECT_EQ(A2 ^ N, A2 - N); 592 EXPECT_EQ(A2 ^ 0, A2); 593 EXPECT_EQ(A2 ^ 1, A2 - 1); 594 EXPECT_EQ(A2 ^ 7, A2 + 5); 595 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 596 } 597 598 TEST(APIntTest, rvalue_arithmetic) { 599 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 600 601 // Lamdba to return an APInt by value, but also provide the raw value of the 602 // allocated data. 603 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 604 APInt V(129, HexString, 16); 605 RawData = V.getRawData(); 606 return V; 607 }; 608 609 APInt One(129, "1", 16); 610 APInt Two(129, "2", 16); 611 APInt Three(129, "3", 16); 612 APInt MinusOne = -One; 613 614 const uint64_t *RawDataL = nullptr; 615 const uint64_t *RawDataR = nullptr; 616 617 { 618 // 1 + 1 = 2 619 APInt AddLL = One + One; 620 EXPECT_EQ(AddLL, Two); 621 622 APInt AddLR = One + getRValue("1", RawDataR); 623 EXPECT_EQ(AddLR, Two); 624 EXPECT_EQ(AddLR.getRawData(), RawDataR); 625 626 APInt AddRL = getRValue("1", RawDataL) + One; 627 EXPECT_EQ(AddRL, Two); 628 EXPECT_EQ(AddRL.getRawData(), RawDataL); 629 630 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 631 EXPECT_EQ(AddRR, Two); 632 EXPECT_EQ(AddRR.getRawData(), RawDataR); 633 634 // LValue's and constants 635 APInt AddLK = One + 1; 636 EXPECT_EQ(AddLK, Two); 637 638 APInt AddKL = 1 + One; 639 EXPECT_EQ(AddKL, Two); 640 641 // RValue's and constants 642 APInt AddRK = getRValue("1", RawDataL) + 1; 643 EXPECT_EQ(AddRK, Two); 644 EXPECT_EQ(AddRK.getRawData(), RawDataL); 645 646 APInt AddKR = 1 + getRValue("1", RawDataR); 647 EXPECT_EQ(AddKR, Two); 648 EXPECT_EQ(AddKR.getRawData(), RawDataR); 649 } 650 651 { 652 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 653 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 654 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 655 656 APInt AddLL = AllOnes + Two; 657 EXPECT_EQ(AddLL, HighOneLowOne); 658 659 APInt AddLR = AllOnes + getRValue("2", RawDataR); 660 EXPECT_EQ(AddLR, HighOneLowOne); 661 EXPECT_EQ(AddLR.getRawData(), RawDataR); 662 663 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 664 EXPECT_EQ(AddRL, HighOneLowOne); 665 EXPECT_EQ(AddRL.getRawData(), RawDataL); 666 667 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 668 getRValue("2", RawDataR); 669 EXPECT_EQ(AddRR, HighOneLowOne); 670 EXPECT_EQ(AddRR.getRawData(), RawDataR); 671 672 // LValue's and constants 673 APInt AddLK = AllOnes + 2; 674 EXPECT_EQ(AddLK, HighOneLowOne); 675 676 APInt AddKL = 2 + AllOnes; 677 EXPECT_EQ(AddKL, HighOneLowOne); 678 679 // RValue's and constants 680 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 681 EXPECT_EQ(AddRK, HighOneLowOne); 682 EXPECT_EQ(AddRK.getRawData(), RawDataL); 683 684 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 685 EXPECT_EQ(AddKR, HighOneLowOne); 686 EXPECT_EQ(AddKR.getRawData(), RawDataR); 687 } 688 689 { 690 // 2 - 1 = 1 691 APInt SubLL = Two - One; 692 EXPECT_EQ(SubLL, One); 693 694 APInt SubLR = Two - getRValue("1", RawDataR); 695 EXPECT_EQ(SubLR, One); 696 EXPECT_EQ(SubLR.getRawData(), RawDataR); 697 698 APInt SubRL = getRValue("2", RawDataL) - One; 699 EXPECT_EQ(SubRL, One); 700 EXPECT_EQ(SubRL.getRawData(), RawDataL); 701 702 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 703 EXPECT_EQ(SubRR, One); 704 EXPECT_EQ(SubRR.getRawData(), RawDataR); 705 706 // LValue's and constants 707 APInt SubLK = Two - 1; 708 EXPECT_EQ(SubLK, One); 709 710 APInt SubKL = 2 - One; 711 EXPECT_EQ(SubKL, One); 712 713 // RValue's and constants 714 APInt SubRK = getRValue("2", RawDataL) - 1; 715 EXPECT_EQ(SubRK, One); 716 EXPECT_EQ(SubRK.getRawData(), RawDataL); 717 718 APInt SubKR = 2 - getRValue("1", RawDataR); 719 EXPECT_EQ(SubKR, One); 720 EXPECT_EQ(SubKR.getRawData(), RawDataR); 721 } 722 723 { 724 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 725 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 726 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 727 728 APInt SubLL = HighOneLowOne - AllOnes; 729 EXPECT_EQ(SubLL, Two); 730 731 APInt SubLR = HighOneLowOne - 732 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 733 EXPECT_EQ(SubLR, Two); 734 EXPECT_EQ(SubLR.getRawData(), RawDataR); 735 736 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 737 AllOnes; 738 EXPECT_EQ(SubRL, Two); 739 EXPECT_EQ(SubRL.getRawData(), RawDataL); 740 741 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 742 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 743 EXPECT_EQ(SubRR, Two); 744 EXPECT_EQ(SubRR.getRawData(), RawDataR); 745 746 // LValue's and constants 747 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 748 APInt SubLK = HighOneLowOne - 2; 749 EXPECT_EQ(SubLK, AllOnes); 750 751 // 2 - (-1) = 3 752 APInt SubKL = 2 - MinusOne; 753 EXPECT_EQ(SubKL, Three); 754 755 // RValue's and constants 756 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 757 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 758 EXPECT_EQ(SubRK, AllOnes); 759 EXPECT_EQ(SubRK.getRawData(), RawDataL); 760 761 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 762 EXPECT_EQ(SubKR, Three); 763 EXPECT_EQ(SubKR.getRawData(), RawDataR); 764 } 765 } 766 767 TEST(APIntTest, rvalue_bitwise) { 768 // Test all combinations of lvalue/rvalue lhs/rhs of and/or/xor 769 770 // Lamdba to return an APInt by value, but also provide the raw value of the 771 // allocated data. 772 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 773 APInt V(129, HexString, 16); 774 RawData = V.getRawData(); 775 return V; 776 }; 777 778 APInt Ten(129, "A", 16); 779 APInt Twelve(129, "C", 16); 780 781 const uint64_t *RawDataL = nullptr; 782 const uint64_t *RawDataR = nullptr; 783 784 { 785 // 12 & 10 = 8 786 APInt AndLL = Ten & Twelve; 787 EXPECT_EQ(AndLL, 0x8); 788 789 APInt AndLR = Ten & getRValue("C", RawDataR); 790 EXPECT_EQ(AndLR, 0x8); 791 EXPECT_EQ(AndLR.getRawData(), RawDataR); 792 793 APInt AndRL = getRValue("A", RawDataL) & Twelve; 794 EXPECT_EQ(AndRL, 0x8); 795 EXPECT_EQ(AndRL.getRawData(), RawDataL); 796 797 APInt AndRR = getRValue("A", RawDataL) & getRValue("C", RawDataR); 798 EXPECT_EQ(AndRR, 0x8); 799 EXPECT_EQ(AndRR.getRawData(), RawDataR); 800 801 // LValue's and constants 802 APInt AndLK = Ten & 0xc; 803 EXPECT_EQ(AndLK, 0x8); 804 805 APInt AndKL = 0xa & Twelve; 806 EXPECT_EQ(AndKL, 0x8); 807 808 // RValue's and constants 809 APInt AndRK = getRValue("A", RawDataL) & 0xc; 810 EXPECT_EQ(AndRK, 0x8); 811 EXPECT_EQ(AndRK.getRawData(), RawDataL); 812 813 APInt AndKR = 0xa & getRValue("C", RawDataR); 814 EXPECT_EQ(AndKR, 0x8); 815 EXPECT_EQ(AndKR.getRawData(), RawDataR); 816 } 817 818 { 819 // 12 | 10 = 14 820 APInt OrLL = Ten | Twelve; 821 EXPECT_EQ(OrLL, 0xe); 822 823 APInt OrLR = Ten | getRValue("C", RawDataR); 824 EXPECT_EQ(OrLR, 0xe); 825 EXPECT_EQ(OrLR.getRawData(), RawDataR); 826 827 APInt OrRL = getRValue("A", RawDataL) | Twelve; 828 EXPECT_EQ(OrRL, 0xe); 829 EXPECT_EQ(OrRL.getRawData(), RawDataL); 830 831 APInt OrRR = getRValue("A", RawDataL) | getRValue("C", RawDataR); 832 EXPECT_EQ(OrRR, 0xe); 833 EXPECT_EQ(OrRR.getRawData(), RawDataR); 834 835 // LValue's and constants 836 APInt OrLK = Ten | 0xc; 837 EXPECT_EQ(OrLK, 0xe); 838 839 APInt OrKL = 0xa | Twelve; 840 EXPECT_EQ(OrKL, 0xe); 841 842 // RValue's and constants 843 APInt OrRK = getRValue("A", RawDataL) | 0xc; 844 EXPECT_EQ(OrRK, 0xe); 845 EXPECT_EQ(OrRK.getRawData(), RawDataL); 846 847 APInt OrKR = 0xa | getRValue("C", RawDataR); 848 EXPECT_EQ(OrKR, 0xe); 849 EXPECT_EQ(OrKR.getRawData(), RawDataR); 850 } 851 852 { 853 // 12 ^ 10 = 6 854 APInt XorLL = Ten ^ Twelve; 855 EXPECT_EQ(XorLL, 0x6); 856 857 APInt XorLR = Ten ^ getRValue("C", RawDataR); 858 EXPECT_EQ(XorLR, 0x6); 859 EXPECT_EQ(XorLR.getRawData(), RawDataR); 860 861 APInt XorRL = getRValue("A", RawDataL) ^ Twelve; 862 EXPECT_EQ(XorRL, 0x6); 863 EXPECT_EQ(XorRL.getRawData(), RawDataL); 864 865 APInt XorRR = getRValue("A", RawDataL) ^ getRValue("C", RawDataR); 866 EXPECT_EQ(XorRR, 0x6); 867 EXPECT_EQ(XorRR.getRawData(), RawDataR); 868 869 // LValue's and constants 870 APInt XorLK = Ten ^ 0xc; 871 EXPECT_EQ(XorLK, 0x6); 872 873 APInt XorKL = 0xa ^ Twelve; 874 EXPECT_EQ(XorKL, 0x6); 875 876 // RValue's and constants 877 APInt XorRK = getRValue("A", RawDataL) ^ 0xc; 878 EXPECT_EQ(XorRK, 0x6); 879 EXPECT_EQ(XorRK.getRawData(), RawDataL); 880 881 APInt XorKR = 0xa ^ getRValue("C", RawDataR); 882 EXPECT_EQ(XorKR, 0x6); 883 EXPECT_EQ(XorKR.getRawData(), RawDataR); 884 } 885 } 886 887 TEST(APIntTest, rvalue_invert) { 888 // Lamdba to return an APInt by value, but also provide the raw value of the 889 // allocated data. 890 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 891 APInt V(129, HexString, 16); 892 RawData = V.getRawData(); 893 return V; 894 }; 895 896 APInt One(129, 1); 897 APInt NegativeTwo(129, -2ULL, true); 898 899 const uint64_t *RawData = nullptr; 900 901 { 902 // ~1 = -2 903 APInt NegL = ~One; 904 EXPECT_EQ(NegL, NegativeTwo); 905 906 APInt NegR = ~getRValue("1", RawData); 907 EXPECT_EQ(NegR, NegativeTwo); 908 EXPECT_EQ(NegR.getRawData(), RawData); 909 } 910 } 911 912 // Tests different div/rem varaints using scheme (a * b + c) / a 913 void testDiv(APInt a, APInt b, APInt c) { 914 ASSERT_TRUE(a.uge(b)); // Must: a >= b 915 ASSERT_TRUE(a.ugt(c)); // Must: a > c 916 917 auto p = a * b + c; 918 919 auto q = p.udiv(a); 920 auto r = p.urem(a); 921 EXPECT_EQ(b, q); 922 EXPECT_EQ(c, r); 923 APInt::udivrem(p, a, q, r); 924 EXPECT_EQ(b, q); 925 EXPECT_EQ(c, r); 926 q = p.sdiv(a); 927 r = p.srem(a); 928 EXPECT_EQ(b, q); 929 EXPECT_EQ(c, r); 930 APInt::sdivrem(p, a, q, r); 931 EXPECT_EQ(b, q); 932 EXPECT_EQ(c, r); 933 934 if (b.ugt(c)) { // Test also symmetric case 935 q = p.udiv(b); 936 r = p.urem(b); 937 EXPECT_EQ(a, q); 938 EXPECT_EQ(c, r); 939 APInt::udivrem(p, b, q, r); 940 EXPECT_EQ(a, q); 941 EXPECT_EQ(c, r); 942 q = p.sdiv(b); 943 r = p.srem(b); 944 EXPECT_EQ(a, q); 945 EXPECT_EQ(c, r); 946 APInt::sdivrem(p, b, q, r); 947 EXPECT_EQ(a, q); 948 EXPECT_EQ(c, r); 949 } 950 } 951 952 TEST(APIntTest, divrem_big1) { 953 // Tests KnuthDiv rare step D6 954 testDiv({256, "1ffffffffffffffff", 16}, 955 {256, "1ffffffffffffffff", 16}, 956 {256, 0}); 957 } 958 959 TEST(APIntTest, divrem_big2) { 960 // Tests KnuthDiv rare step D6 961 testDiv({1024, "112233ceff" 962 "cecece000000ffffffffffffffffffff" 963 "ffffffffffffffffffffffffffffffff" 964 "ffffffffffffffffffffffffffffffff" 965 "ffffffffffffffffffffffffffffff33", 16}, 966 {1024, "111111ffffffffffffffff" 967 "ffffffffffffffffffffffffffffffff" 968 "fffffffffffffffffffffffffffffccf" 969 "ffffffffffffffffffffffffffffff00", 16}, 970 {1024, 7919}); 971 } 972 973 TEST(APIntTest, divrem_big3) { 974 // Tests KnuthDiv case without shift 975 testDiv({256, "80000001ffffffffffffffff", 16}, 976 {256, "ffffffffffffff0000000", 16}, 977 {256, 4219}); 978 } 979 980 TEST(APIntTest, divrem_big4) { 981 // Tests heap allocation in divide() enfoced by huge numbers 982 testDiv(APInt{4096, 5}.shl(2001), 983 APInt{4096, 1}.shl(2000), 984 APInt{4096, 4219*13}); 985 } 986 987 TEST(APIntTest, divrem_big5) { 988 // Tests one word divisor case of divide() 989 testDiv(APInt{1024, 19}.shl(811), 990 APInt{1024, 4356013}, // one word 991 APInt{1024, 1}); 992 } 993 994 TEST(APIntTest, divrem_big6) { 995 // Tests some rare "borrow" cases in D4 step 996 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 997 APInt{512, "10000000000000001000000000000001", 16}, 998 APInt{512, "10000000000000000000000000000000", 16}); 999 } 1000 1001 TEST(APIntTest, divrem_big7) { 1002 // Yet another test for KnuthDiv rare step D6. 1003 testDiv({224, "800000008000000200000005", 16}, 1004 {224, "fffffffd", 16}, 1005 {224, "80000000800000010000000f", 16}); 1006 } 1007 1008 void testDiv(APInt a, uint64_t b, APInt c) { 1009 auto p = a * b + c; 1010 1011 APInt q; 1012 uint64_t r; 1013 // Unsigned division will only work if our original number wasn't negative. 1014 if (!a.isNegative()) { 1015 q = p.udiv(b); 1016 r = p.urem(b); 1017 EXPECT_EQ(a, q); 1018 EXPECT_EQ(c, r); 1019 APInt::udivrem(p, b, q, r); 1020 EXPECT_EQ(a, q); 1021 EXPECT_EQ(c, r); 1022 } 1023 q = p.sdiv(b); 1024 r = p.srem(b); 1025 EXPECT_EQ(a, q); 1026 if (c.isNegative()) 1027 EXPECT_EQ(-c, -r); // Need to negate so the uint64_t compare will work. 1028 else 1029 EXPECT_EQ(c, r); 1030 int64_t sr; 1031 APInt::sdivrem(p, b, q, sr); 1032 EXPECT_EQ(a, q); 1033 if (c.isNegative()) 1034 EXPECT_EQ(-c, -sr); // Need to negate so the uint64_t compare will work. 1035 else 1036 EXPECT_EQ(c, sr); 1037 } 1038 1039 TEST(APIntTest, divremuint) { 1040 // Single word APInt 1041 testDiv(APInt{64, 9}, 1042 2, 1043 APInt{64, 1}); 1044 1045 // Single word negative APInt 1046 testDiv(-APInt{64, 9}, 1047 2, 1048 -APInt{64, 1}); 1049 1050 // Multiword dividend with only one significant word. 1051 testDiv(APInt{256, 9}, 1052 2, 1053 APInt{256, 1}); 1054 1055 // Negative dividend. 1056 testDiv(-APInt{256, 9}, 1057 2, 1058 -APInt{256, 1}); 1059 1060 // Multiword dividend 1061 testDiv(APInt{1024, 19}.shl(811), 1062 4356013, // one word 1063 APInt{1024, 1}); 1064 } 1065 1066 TEST(APIntTest, divrem_simple) { 1067 // Test simple cases. 1068 APInt A(65, 2), B(65, 2); 1069 APInt Q, R; 1070 1071 // X / X 1072 APInt::sdivrem(A, B, Q, R); 1073 EXPECT_EQ(Q, APInt(65, 1)); 1074 EXPECT_EQ(R, APInt(65, 0)); 1075 APInt::udivrem(A, B, Q, R); 1076 EXPECT_EQ(Q, APInt(65, 1)); 1077 EXPECT_EQ(R, APInt(65, 0)); 1078 1079 // 0 / X 1080 APInt O(65, 0); 1081 APInt::sdivrem(O, B, Q, R); 1082 EXPECT_EQ(Q, APInt(65, 0)); 1083 EXPECT_EQ(R, APInt(65, 0)); 1084 APInt::udivrem(O, B, Q, R); 1085 EXPECT_EQ(Q, APInt(65, 0)); 1086 EXPECT_EQ(R, APInt(65, 0)); 1087 1088 // X / 1 1089 APInt I(65, 1); 1090 APInt::sdivrem(A, I, Q, R); 1091 EXPECT_EQ(Q, A); 1092 EXPECT_EQ(R, APInt(65, 0)); 1093 APInt::udivrem(A, I, Q, R); 1094 EXPECT_EQ(Q, A); 1095 EXPECT_EQ(R, APInt(65, 0)); 1096 } 1097 1098 TEST(APIntTest, fromString) { 1099 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 1100 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 1101 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 1102 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 1103 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 1104 1105 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 1106 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 1107 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 1108 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 1109 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 1110 1111 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 1112 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 1113 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 1114 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 1115 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 1116 1117 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 1118 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 1119 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 1120 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 1121 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 1122 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 1123 1124 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 1125 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 1126 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 1127 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 1128 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 1129 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 1130 1131 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 1132 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 1133 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 1134 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 1135 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 1136 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 1137 1138 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 1139 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 1140 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 1141 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 1142 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 1143 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 1144 1145 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 1146 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 1147 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 1148 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 1149 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 1150 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 1151 1152 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 1153 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 1154 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 1155 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 1156 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 1157 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 1158 1159 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 1160 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 1161 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 1162 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 1163 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 1164 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 1165 1166 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 1167 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 1168 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 1169 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 1170 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 1171 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 1172 1173 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 1174 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 1175 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 1176 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 1177 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 1178 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 1179 } 1180 1181 TEST(APIntTest, SaturatingMath) { 1182 APInt AP_10 = APInt(8, 10); 1183 APInt AP_42 = APInt(8, 42); 1184 APInt AP_100 = APInt(8, 100); 1185 APInt AP_200 = APInt(8, 200); 1186 1187 EXPECT_EQ(APInt(8, 100), AP_100.truncUSat(8)); 1188 EXPECT_EQ(APInt(7, 100), AP_100.truncUSat(7)); 1189 EXPECT_EQ(APInt(6, 63), AP_100.truncUSat(6)); 1190 EXPECT_EQ(APInt(5, 31), AP_100.truncUSat(5)); 1191 1192 EXPECT_EQ(APInt(8, 200), AP_200.truncUSat(8)); 1193 EXPECT_EQ(APInt(7, 127), AP_200.truncUSat(7)); 1194 EXPECT_EQ(APInt(6, 63), AP_200.truncUSat(6)); 1195 EXPECT_EQ(APInt(5, 31), AP_200.truncUSat(5)); 1196 1197 EXPECT_EQ(APInt(8, 42), AP_42.truncSSat(8)); 1198 EXPECT_EQ(APInt(7, 42), AP_42.truncSSat(7)); 1199 EXPECT_EQ(APInt(6, 31), AP_42.truncSSat(6)); 1200 EXPECT_EQ(APInt(5, 15), AP_42.truncSSat(5)); 1201 1202 EXPECT_EQ(APInt(8, -56), AP_200.truncSSat(8)); 1203 EXPECT_EQ(APInt(7, -56), AP_200.truncSSat(7)); 1204 EXPECT_EQ(APInt(6, -32), AP_200.truncSSat(6)); 1205 EXPECT_EQ(APInt(5, -16), AP_200.truncSSat(5)); 1206 1207 EXPECT_EQ(APInt(8, 200), AP_100.uadd_sat(AP_100)); 1208 EXPECT_EQ(APInt(8, 255), AP_100.uadd_sat(AP_200)); 1209 EXPECT_EQ(APInt(8, 255), APInt(8, 255).uadd_sat(APInt(8, 255))); 1210 1211 EXPECT_EQ(APInt(8, 110), AP_10.sadd_sat(AP_100)); 1212 EXPECT_EQ(APInt(8, 127), AP_100.sadd_sat(AP_100)); 1213 EXPECT_EQ(APInt(8, -128), (-AP_100).sadd_sat(-AP_100)); 1214 EXPECT_EQ(APInt(8, -128), APInt(8, -128).sadd_sat(APInt(8, -128))); 1215 1216 EXPECT_EQ(APInt(8, 90), AP_100.usub_sat(AP_10)); 1217 EXPECT_EQ(APInt(8, 0), AP_100.usub_sat(AP_200)); 1218 EXPECT_EQ(APInt(8, 0), APInt(8, 0).usub_sat(APInt(8, 255))); 1219 1220 EXPECT_EQ(APInt(8, -90), AP_10.ssub_sat(AP_100)); 1221 EXPECT_EQ(APInt(8, 127), AP_100.ssub_sat(-AP_100)); 1222 EXPECT_EQ(APInt(8, -128), (-AP_100).ssub_sat(AP_100)); 1223 EXPECT_EQ(APInt(8, -128), APInt(8, -128).ssub_sat(APInt(8, 127))); 1224 1225 EXPECT_EQ(APInt(8, 250), APInt(8, 50).umul_sat(APInt(8, 5))); 1226 EXPECT_EQ(APInt(8, 255), APInt(8, 50).umul_sat(APInt(8, 6))); 1227 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, 3))); 1228 EXPECT_EQ(APInt(8, 255), APInt(8, 3).umul_sat(APInt(8, -128))); 1229 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, -128))); 1230 1231 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1232 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1233 EXPECT_EQ(APInt(8, 127), APInt(8, 127).smul_sat(APInt(8, 127))); 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, 125), APInt(8, -25).smul_sat(APInt(8, -5))); 1237 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1238 EXPECT_EQ(APInt(8, -128), APInt(8, -25).smul_sat(APInt(8, 6))); 1239 EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6))); 1240 EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6))); 1241 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1242 1243 EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5))); 1244 EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6))); 1245 EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7))); 1246 EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8))); 1247 EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2))); 1248 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2))); 1249 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2))); 1250 1251 EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4))); 1252 EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5))); 1253 EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8))); 1254 EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4))); 1255 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5))); 1256 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6))); 1257 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7))); 1258 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8))); 1259 } 1260 1261 TEST(APIntTest, FromArray) { 1262 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 1263 } 1264 1265 TEST(APIntTest, StringBitsNeeded2) { 1266 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 1267 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 1268 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 1269 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 1270 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 1271 1272 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 1273 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 1274 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 1275 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 1276 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 1277 1278 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 1279 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 1280 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 1281 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 1282 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 1283 } 1284 1285 TEST(APIntTest, StringBitsNeeded8) { 1286 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 1287 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 1288 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 1289 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 1290 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 1291 1292 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 1293 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 1294 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 1295 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 1296 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 1297 1298 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 1299 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 1300 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 1301 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 1302 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 1303 } 1304 1305 TEST(APIntTest, StringBitsNeeded10) { 1306 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 1307 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 1308 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 1309 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 1310 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 1311 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 1312 1313 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1314 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1315 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1316 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1317 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1318 1319 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1320 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1321 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1322 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1323 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1324 1325 EXPECT_EQ(1U, APInt::getBitsNeeded("-1", 10)); 1326 EXPECT_EQ(2U, APInt::getBitsNeeded("-2", 10)); 1327 EXPECT_EQ(3U, APInt::getBitsNeeded("-4", 10)); 1328 EXPECT_EQ(4U, APInt::getBitsNeeded("-8", 10)); 1329 EXPECT_EQ(5U, APInt::getBitsNeeded("-16", 10)); 1330 EXPECT_EQ(6U, APInt::getBitsNeeded("-23", 10)); 1331 EXPECT_EQ(6U, APInt::getBitsNeeded("-32", 10)); 1332 EXPECT_EQ(7U, APInt::getBitsNeeded("-64", 10)); 1333 EXPECT_EQ(8U, APInt::getBitsNeeded("-127", 10)); 1334 EXPECT_EQ(8U, APInt::getBitsNeeded("-128", 10)); 1335 EXPECT_EQ(9U, APInt::getBitsNeeded("-255", 10)); 1336 EXPECT_EQ(9U, APInt::getBitsNeeded("-256", 10)); 1337 EXPECT_EQ(10U, APInt::getBitsNeeded("-512", 10)); 1338 EXPECT_EQ(11U, APInt::getBitsNeeded("-1024", 10)); 1339 EXPECT_EQ(12U, APInt::getBitsNeeded("-1025", 10)); 1340 } 1341 1342 TEST(APIntTest, StringBitsNeeded16) { 1343 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1344 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1345 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1346 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1347 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1348 1349 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1350 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1351 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1352 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1353 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1354 1355 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1356 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1357 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1358 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1359 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1360 } 1361 1362 TEST(APIntTest, toString) { 1363 SmallString<16> S; 1364 bool isSigned; 1365 1366 APInt(8, 0).toString(S, 2, true, true); 1367 EXPECT_EQ(std::string(S), "0b0"); 1368 S.clear(); 1369 APInt(8, 0).toString(S, 8, true, true); 1370 EXPECT_EQ(std::string(S), "00"); 1371 S.clear(); 1372 APInt(8, 0).toString(S, 10, true, true); 1373 EXPECT_EQ(std::string(S), "0"); 1374 S.clear(); 1375 APInt(8, 0).toString(S, 16, true, true); 1376 EXPECT_EQ(std::string(S), "0x0"); 1377 S.clear(); 1378 APInt(8, 0).toString(S, 36, true, false); 1379 EXPECT_EQ(std::string(S), "0"); 1380 S.clear(); 1381 1382 isSigned = false; 1383 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1384 EXPECT_EQ(std::string(S), "0b11111111"); 1385 S.clear(); 1386 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1387 EXPECT_EQ(std::string(S), "0377"); 1388 S.clear(); 1389 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1390 EXPECT_EQ(std::string(S), "255"); 1391 S.clear(); 1392 APInt(8, 255, isSigned).toString(S, 16, isSigned, true, /*UpperCase=*/false); 1393 EXPECT_EQ(std::string(S), "0xff"); 1394 S.clear(); 1395 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1396 EXPECT_EQ(std::string(S), "0xFF"); 1397 S.clear(); 1398 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1399 EXPECT_EQ(std::string(S), "73"); 1400 S.clear(); 1401 1402 isSigned = true; 1403 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1404 EXPECT_EQ(std::string(S), "-0b1"); 1405 S.clear(); 1406 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1407 EXPECT_EQ(std::string(S), "-01"); 1408 S.clear(); 1409 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1410 EXPECT_EQ(std::string(S), "-1"); 1411 S.clear(); 1412 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1413 EXPECT_EQ(std::string(S), "-0x1"); 1414 S.clear(); 1415 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1416 EXPECT_EQ(std::string(S), "-1"); 1417 S.clear(); 1418 } 1419 1420 TEST(APIntTest, Log2) { 1421 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1422 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1423 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1424 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1425 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1426 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1427 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1428 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1429 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1430 } 1431 1432 #ifdef GTEST_HAS_DEATH_TEST 1433 #ifndef NDEBUG 1434 TEST(APIntTest, StringDeath) { 1435 EXPECT_DEATH((void)APInt(32, "", 0), "Invalid string length"); 1436 EXPECT_DEATH((void)APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1437 EXPECT_DEATH((void)APInt(32, "", 10), "Invalid string length"); 1438 EXPECT_DEATH((void)APInt(32, "-", 10), "String is only a sign, needs a value."); 1439 EXPECT_DEATH((void)APInt(1, "1234", 10), "Insufficient bit width"); 1440 EXPECT_DEATH((void)APInt(32, "\0", 10), "Invalid string length"); 1441 EXPECT_DEATH((void)APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1442 EXPECT_DEATH((void)APInt(32, "1L", 10), "Invalid character in digit string"); 1443 } 1444 #endif 1445 #endif 1446 1447 TEST(APIntTest, mul_clear) { 1448 APInt ValA(65, -1ULL); 1449 APInt ValB(65, 4); 1450 APInt ValC(65, 0); 1451 ValC = ValA * ValB; 1452 ValA *= ValB; 1453 SmallString<16> StrA, StrC; 1454 ValA.toString(StrA, 10, false); 1455 ValC.toString(StrC, 10, false); 1456 EXPECT_EQ(std::string(StrA), std::string(StrC)); 1457 } 1458 1459 TEST(APIntTest, Rotate) { 1460 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1461 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1462 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1463 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1464 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1465 1466 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1467 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1468 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1469 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1470 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1471 1472 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1473 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1474 1475 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1476 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1477 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1478 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1479 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1480 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1481 1482 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1483 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1484 1485 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1486 1487 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1488 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1489 1490 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1491 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1492 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1493 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1494 1495 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1496 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1497 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1498 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1499 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1500 1501 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1502 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1503 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1504 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1505 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1506 1507 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1508 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1509 1510 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1511 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1512 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1513 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1514 1515 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1516 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1517 1518 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1519 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1520 1521 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1522 1523 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1524 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1525 1526 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1527 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1528 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1529 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1530 1531 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1532 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1533 EXPECT_EQ(Rot, Big.rotr(144)); 1534 1535 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1536 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1537 } 1538 1539 TEST(APIntTest, Splat) { 1540 APInt ValA(8, 0x01); 1541 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1542 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1543 1544 APInt ValB(3, 5); 1545 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1546 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1547 } 1548 1549 TEST(APIntTest, tcDecrement) { 1550 // Test single word decrement. 1551 1552 // No out borrow. 1553 { 1554 APInt::WordType singleWord = ~APInt::WordType(0) << (APInt::APINT_BITS_PER_WORD - 1); 1555 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1556 EXPECT_EQ(carry, APInt::WordType(0)); 1557 EXPECT_EQ(singleWord, ~APInt::WordType(0) >> 1); 1558 } 1559 1560 // With out borrow. 1561 { 1562 APInt::WordType singleWord = 0; 1563 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1564 EXPECT_EQ(carry, APInt::WordType(1)); 1565 EXPECT_EQ(singleWord, ~APInt::WordType(0)); 1566 } 1567 1568 // Test multiword decrement. 1569 1570 // No across word borrow, no out borrow. 1571 { 1572 APInt::WordType test[4] = {0x1, 0x1, 0x1, 0x1}; 1573 APInt::WordType expected[4] = {0x0, 0x1, 0x1, 0x1}; 1574 APInt::tcDecrement(test, 4); 1575 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1576 } 1577 1578 // 1 across word borrow, no out borrow. 1579 { 1580 APInt::WordType test[4] = {0x0, 0xF, 0x1, 0x1}; 1581 APInt::WordType expected[4] = {~APInt::WordType(0), 0xE, 0x1, 0x1}; 1582 APInt::WordType carry = APInt::tcDecrement(test, 4); 1583 EXPECT_EQ(carry, APInt::WordType(0)); 1584 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1585 } 1586 1587 // 2 across word borrow, no out borrow. 1588 { 1589 APInt::WordType test[4] = {0x0, 0x0, 0xC, 0x1}; 1590 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), 0xB, 0x1}; 1591 APInt::WordType carry = APInt::tcDecrement(test, 4); 1592 EXPECT_EQ(carry, APInt::WordType(0)); 1593 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1594 } 1595 1596 // 3 across word borrow, no out borrow. 1597 { 1598 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x1}; 1599 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), 0x0}; 1600 APInt::WordType carry = APInt::tcDecrement(test, 4); 1601 EXPECT_EQ(carry, APInt::WordType(0)); 1602 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1603 } 1604 1605 // 3 across word borrow, with out borrow. 1606 { 1607 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x0}; 1608 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0)}; 1609 APInt::WordType carry = APInt::tcDecrement(test, 4); 1610 EXPECT_EQ(carry, APInt::WordType(1)); 1611 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1612 } 1613 } 1614 1615 TEST(APIntTest, arrayAccess) { 1616 // Single word check. 1617 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1618 APInt A1(64, E1); 1619 for (unsigned i = 0, e = 64; i < e; ++i) { 1620 EXPECT_EQ(bool(E1 & (1ULL << i)), 1621 A1[i]); 1622 } 1623 1624 // Multiword check. 1625 APInt::WordType E2[4] = { 1626 0xEB6EB136591CBA21ULL, 1627 0x7B9358BD6A33F10AULL, 1628 0x7E7FFA5EADD8846ULL, 1629 0x305F341CA00B613DULL 1630 }; 1631 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 1632 for (unsigned i = 0; i < 4; ++i) { 1633 for (unsigned j = 0; j < APInt::APINT_BITS_PER_WORD; ++j) { 1634 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1635 A2[i*APInt::APINT_BITS_PER_WORD + j]); 1636 } 1637 } 1638 } 1639 1640 TEST(APIntTest, LargeAPIntConstruction) { 1641 // Check that we can properly construct very large APInt. It is very 1642 // unlikely that people will ever do this, but it is a legal input, 1643 // so we should not crash on it. 1644 APInt A9(UINT32_MAX, 0); 1645 EXPECT_FALSE(A9.getBoolValue()); 1646 } 1647 1648 TEST(APIntTest, nearestLogBase2) { 1649 // Single word check. 1650 1651 // Test round up. 1652 uint64_t I1 = 0x1800001; 1653 APInt A1(64, I1); 1654 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1655 1656 // Test round down. 1657 uint64_t I2 = 0x1000011; 1658 APInt A2(64, I2); 1659 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1660 1661 // Test ties round up. 1662 uint64_t I3 = 0x1800000; 1663 APInt A3(64, I3); 1664 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1665 1666 // Multiple word check. 1667 1668 // Test round up. 1669 APInt::WordType I4[4] = {0x0, 0xF, 0x18, 0x0}; 1670 APInt A4(APInt::APINT_BITS_PER_WORD*4, I4); 1671 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1672 1673 // Test round down. 1674 APInt::WordType I5[4] = {0x0, 0xF, 0x10, 0x0}; 1675 APInt A5(APInt::APINT_BITS_PER_WORD*4, I5); 1676 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1677 1678 // Test ties round up. 1679 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1680 APInt A6(APInt::APINT_BITS_PER_WORD*4, I6); 1681 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1682 1683 // Test BitWidth == 1 special cases. 1684 APInt A7(1, 1); 1685 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1686 APInt A8(1, 0); 1687 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1688 1689 // Test the zero case when we have a bit width large enough such 1690 // that the bit width is larger than UINT32_MAX-1. 1691 APInt A9(UINT32_MAX, 0); 1692 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1693 } 1694 1695 TEST(APIntTest, IsSplat) { 1696 APInt A(32, 0x01010101); 1697 EXPECT_FALSE(A.isSplat(1)); 1698 EXPECT_FALSE(A.isSplat(2)); 1699 EXPECT_FALSE(A.isSplat(4)); 1700 EXPECT_TRUE(A.isSplat(8)); 1701 EXPECT_TRUE(A.isSplat(16)); 1702 EXPECT_TRUE(A.isSplat(32)); 1703 1704 APInt B(24, 0xAAAAAA); 1705 EXPECT_FALSE(B.isSplat(1)); 1706 EXPECT_TRUE(B.isSplat(2)); 1707 EXPECT_TRUE(B.isSplat(4)); 1708 EXPECT_TRUE(B.isSplat(8)); 1709 EXPECT_TRUE(B.isSplat(24)); 1710 1711 APInt C(24, 0xABAAAB); 1712 EXPECT_FALSE(C.isSplat(1)); 1713 EXPECT_FALSE(C.isSplat(2)); 1714 EXPECT_FALSE(C.isSplat(4)); 1715 EXPECT_FALSE(C.isSplat(8)); 1716 EXPECT_TRUE(C.isSplat(24)); 1717 1718 APInt D(32, 0xABBAABBA); 1719 EXPECT_FALSE(D.isSplat(1)); 1720 EXPECT_FALSE(D.isSplat(2)); 1721 EXPECT_FALSE(D.isSplat(4)); 1722 EXPECT_FALSE(D.isSplat(8)); 1723 EXPECT_TRUE(D.isSplat(16)); 1724 EXPECT_TRUE(D.isSplat(32)); 1725 1726 APInt E(32, 0); 1727 EXPECT_TRUE(E.isSplat(1)); 1728 EXPECT_TRUE(E.isSplat(2)); 1729 EXPECT_TRUE(E.isSplat(4)); 1730 EXPECT_TRUE(E.isSplat(8)); 1731 EXPECT_TRUE(E.isSplat(16)); 1732 EXPECT_TRUE(E.isSplat(32)); 1733 } 1734 1735 TEST(APIntTest, isMask) { 1736 EXPECT_FALSE(APInt(32, 0x01010101).isMask()); 1737 EXPECT_FALSE(APInt(32, 0xf0000000).isMask()); 1738 EXPECT_FALSE(APInt(32, 0xffff0000).isMask()); 1739 EXPECT_FALSE(APInt(32, 0xff << 1).isMask()); 1740 1741 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1742 EXPECT_FALSE(APInt(N, 0).isMask()); 1743 1744 APInt One(N, 1); 1745 for (int I = 1; I <= N; ++I) { 1746 APInt MaskVal = One.shl(I) - 1; 1747 EXPECT_TRUE(MaskVal.isMask()); 1748 EXPECT_TRUE(MaskVal.isMask(I)); 1749 } 1750 } 1751 } 1752 1753 TEST(APIntTest, isShiftedMask) { 1754 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask()); 1755 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask()); 1756 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask()); 1757 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask()); 1758 1759 unsigned MaskIdx, MaskLen; 1760 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask(MaskIdx, MaskLen)); 1761 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask(MaskIdx, MaskLen)); 1762 EXPECT_EQ(28, (int)MaskIdx); 1763 EXPECT_EQ(4, (int)MaskLen); 1764 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask(MaskIdx, MaskLen)); 1765 EXPECT_EQ(16, (int)MaskIdx); 1766 EXPECT_EQ(16, (int)MaskLen); 1767 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask(MaskIdx, MaskLen)); 1768 EXPECT_EQ(1, (int)MaskIdx); 1769 EXPECT_EQ(8, (int)MaskLen); 1770 1771 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1772 EXPECT_FALSE(APInt(N, 0).isShiftedMask()); 1773 EXPECT_FALSE(APInt(N, 0).isShiftedMask(MaskIdx, MaskLen)); 1774 1775 APInt One(N, 1); 1776 for (int I = 1; I < N; ++I) { 1777 APInt MaskVal = One.shl(I) - 1; 1778 EXPECT_TRUE(MaskVal.isShiftedMask()); 1779 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1780 EXPECT_EQ(0, (int)MaskIdx); 1781 EXPECT_EQ(I, (int)MaskLen); 1782 } 1783 for (int I = 1; I < N - 1; ++I) { 1784 APInt MaskVal = One.shl(I); 1785 EXPECT_TRUE(MaskVal.isShiftedMask()); 1786 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1787 EXPECT_EQ(I, (int)MaskIdx); 1788 EXPECT_EQ(1, (int)MaskLen); 1789 } 1790 for (int I = 1; I < N; ++I) { 1791 APInt MaskVal = APInt::getHighBitsSet(N, I); 1792 EXPECT_TRUE(MaskVal.isShiftedMask()); 1793 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1794 EXPECT_EQ(N - I, (int)MaskIdx); 1795 EXPECT_EQ(I, (int)MaskLen); 1796 } 1797 } 1798 } 1799 1800 TEST(APIntTest, isOneBitSet) { 1801 EXPECT_FALSE(APInt(5, 0x00).isOneBitSet(0)); 1802 EXPECT_FALSE(APInt(5, 0x02).isOneBitSet(0)); 1803 EXPECT_FALSE(APInt(5, 0x03).isOneBitSet(0)); 1804 EXPECT_TRUE(APInt(5, 0x02).isOneBitSet(1)); 1805 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isOneBitSet(31)); 1806 1807 EXPECT_TRUE(APInt::getOneBitSet(255, 13).isOneBitSet(13)); 1808 } 1809 1810 TEST(APIntTest, isPowerOf2) { 1811 EXPECT_FALSE(APInt(5, 0x00).isPowerOf2()); 1812 EXPECT_FALSE(APInt(32, 0x11).isPowerOf2()); 1813 EXPECT_TRUE(APInt(17, 0x01).isPowerOf2()); 1814 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isPowerOf2()); 1815 1816 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1817 EXPECT_FALSE(APInt(N, 0).isPowerOf2()); 1818 EXPECT_TRUE(APInt::getSignedMinValue(N).isPowerOf2()); 1819 1820 APInt One(N, 1); 1821 for (int I = 1; I < N - 1; ++I) { 1822 EXPECT_TRUE(APInt::getOneBitSet(N, I).isPowerOf2()); 1823 1824 APInt MaskVal = One.shl(I); 1825 EXPECT_TRUE(MaskVal.isPowerOf2()); 1826 } 1827 } 1828 } 1829 1830 TEST(APIntTest, isNegatedPowerOf2) { 1831 EXPECT_FALSE(APInt(5, 0x00).isNegatedPowerOf2()); 1832 EXPECT_TRUE(APInt(15, 0x7ffe).isNegatedPowerOf2()); 1833 EXPECT_TRUE(APInt(16, 0xfffc).isNegatedPowerOf2()); 1834 EXPECT_TRUE(APInt(32, 0xffffffff).isNegatedPowerOf2()); 1835 1836 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1837 EXPECT_FALSE(APInt(N, 0).isNegatedPowerOf2()); 1838 EXPECT_TRUE(APInt::getAllOnes(N).isNegatedPowerOf2()); 1839 EXPECT_TRUE(APInt::getSignedMinValue(N).isNegatedPowerOf2()); 1840 EXPECT_TRUE((-APInt::getSignedMinValue(N)).isNegatedPowerOf2()); 1841 1842 APInt One(N, 1); 1843 for (int I = 1; I < N - 1; ++I) { 1844 EXPECT_FALSE(APInt::getOneBitSet(N, I).isNegatedPowerOf2()); 1845 EXPECT_TRUE((-APInt::getOneBitSet(N, I)).isNegatedPowerOf2()); 1846 1847 APInt MaskVal = One.shl(I); 1848 EXPECT_TRUE((-MaskVal).isNegatedPowerOf2()); 1849 1850 APInt ShiftMaskVal = One.getHighBitsSet(N, I); 1851 EXPECT_TRUE(ShiftMaskVal.isNegatedPowerOf2()); 1852 } 1853 } 1854 } 1855 1856 TEST(APIntTest, isAligned) { 1857 struct { 1858 uint64_t alignment; 1859 uint64_t offset; 1860 bool isAligned; 1861 } Tests[] = { 1862 {1, 0, true}, {1, 1, true}, {1, 5, true}, {2, 0, true}, 1863 {2, 1, false}, {2, 2, true}, {2, 7, false}, {2, 16, true}, 1864 {4, 0, true}, {4, 1, false}, {4, 4, true}, {4, 6, false}, 1865 }; 1866 for (const auto &T : Tests) 1867 EXPECT_EQ(APInt(32, T.offset).isAligned(Align(T.alignment)), T.isAligned); 1868 // Tests for APInt that can't represent the alignment. 1869 // Here APInt(4, I) can represent values from 0 to 15. 1870 EXPECT_TRUE(APInt(4, 0).isAligned(Align(32))); // zero is always aligned. 1871 for (int I = 1; I < 16; ++I) 1872 EXPECT_FALSE(APInt(4, I).isAligned(Align(32))); 1873 } 1874 1875 // Test that self-move works with EXPENSIVE_CHECKS. It calls std::shuffle which 1876 // does self-move on some platforms. 1877 #ifdef EXPENSIVE_CHECKS 1878 #if defined(__clang__) 1879 // Disable the pragma warning from versions of Clang without -Wself-move 1880 #pragma clang diagnostic push 1881 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1882 // Disable the warning that triggers on exactly what is being tested. 1883 #pragma clang diagnostic push 1884 #pragma clang diagnostic ignored "-Wself-move" 1885 #endif 1886 TEST(APIntTest, SelfMoveAssignment) { 1887 APInt X(32, 0xdeadbeef); 1888 X = std::move(X); 1889 EXPECT_EQ(32u, X.getBitWidth()); 1890 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1891 1892 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1893 APInt Y(128, Bits); 1894 Y = std::move(Y); 1895 EXPECT_EQ(128u, Y.getBitWidth()); 1896 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1897 const uint64_t *Raw = Y.getRawData(); 1898 EXPECT_EQ(2u, Y.getNumWords()); 1899 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1900 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1901 } 1902 #if defined(__clang__) 1903 #pragma clang diagnostic pop 1904 #pragma clang diagnostic pop 1905 #endif 1906 #endif // EXPENSIVE_CHECKS 1907 1908 TEST(APIntTest, byteSwap) { 1909 EXPECT_EQ(0x00000000, APInt(16, 0x0000).byteSwap()); 1910 EXPECT_EQ(0x0000010f, APInt(16, 0x0f01).byteSwap()); 1911 EXPECT_EQ(0x00ff8000, APInt(24, 0x0080ff).byteSwap()); 1912 EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap()); 1913 EXPECT_EQ(0x228811aaffULL, APInt(40, 0xffaa118822ULL).byteSwap()); 1914 EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap()); 1915 EXPECT_EQ(0xff050403020100ULL, APInt(56, 0x000102030405ffULL).byteSwap()); 1916 EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap()); 1917 1918 for (unsigned N : {16, 24, 32, 48, 56, 64, 72, 80, 96, 112, 128, 248, 256, 1919 1024, 1032, 1040}) { 1920 for (unsigned I = 0; I < N; I += 8) { 1921 APInt X = APInt::getBitsSet(N, I, I + 8); 1922 APInt Y = APInt::getBitsSet(N, N - I - 8, N - I); 1923 EXPECT_EQ(Y, X.byteSwap()); 1924 EXPECT_EQ(X, Y.byteSwap()); 1925 } 1926 } 1927 } 1928 1929 TEST(APIntTest, reverseBits) { 1930 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1931 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1932 1933 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1934 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1935 1936 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1937 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1938 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1939 1940 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1941 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1942 1943 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1944 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1945 1946 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1947 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1948 1949 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1950 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1951 1952 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1953 1954 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1955 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1956 1957 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1958 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1959 1960 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1961 63, 64, 65, 127, 128, 257, 1024 }) { 1962 for (unsigned I = 0; I < N; ++I) { 1963 APInt X = APInt::getOneBitSet(N, I); 1964 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1965 EXPECT_EQ(Y, X.reverseBits()); 1966 EXPECT_EQ(X, Y.reverseBits()); 1967 } 1968 } 1969 } 1970 1971 TEST(APIntTest, insertBits) { 1972 APInt iSrc(31, 0x00123456); 1973 1974 // Direct copy. 1975 APInt i31(31, 0x76543210ull); 1976 i31.insertBits(iSrc, 0); 1977 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 1978 1979 // Single word src/dst insertion. 1980 APInt i63(63, 0x01234567FFFFFFFFull); 1981 i63.insertBits(iSrc, 4); 1982 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 1983 1984 // Zero width insert is a noop. 1985 i31.insertBits(APInt::getZeroWidth(), 1); 1986 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 1987 1988 // Insert single word src into one word of dst. 1989 APInt i120(120, UINT64_MAX, true); 1990 i120.insertBits(iSrc, 8); 1991 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 1992 1993 // Insert single word src into two words of dst. 1994 APInt i127(127, UINT64_MAX, true); 1995 i127.insertBits(iSrc, 48); 1996 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 1997 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 1998 1999 // Insert on word boundaries. 2000 APInt i128(128, 0); 2001 i128.insertBits(APInt(64, UINT64_MAX, true), 0); 2002 i128.insertBits(APInt(64, UINT64_MAX, true), 64); 2003 EXPECT_EQ(-1, i128.getSExtValue()); 2004 2005 APInt i256(256, UINT64_MAX, true); 2006 i256.insertBits(APInt(65, 0), 0); 2007 i256.insertBits(APInt(69, 0), 64); 2008 i256.insertBits(APInt(128, 0), 128); 2009 EXPECT_EQ(0u, i256.getSExtValue()); 2010 2011 APInt i257(257, 0); 2012 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2013 EXPECT_EQ(i257.extractBits(64, 0).getZExtValue(), 0x0000000000000000ull); 2014 EXPECT_EQ(i257.extractBits(64, 64).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2015 EXPECT_EQ(i257.extractBits(64, 128).getZExtValue(), 0x00000000FFFFFFFFull); 2016 EXPECT_EQ(i257.extractBits(65, 192).getZExtValue(), 0x0000000000000000ull); 2017 2018 // General insertion. 2019 APInt i260(260, UINT64_MAX, true); 2020 i260.insertBits(APInt(129, 1ull << 48), 15); 2021 EXPECT_EQ(i260.extractBits(64, 0).getZExtValue(), 0x8000000000007FFFull); 2022 EXPECT_EQ(i260.extractBits(64, 64).getZExtValue(), 0x0000000000000000ull); 2023 EXPECT_EQ(i260.extractBits(64, 128).getZExtValue(), 0xFFFFFFFFFFFF0000ull); 2024 EXPECT_EQ(i260.extractBits(64, 192).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2025 EXPECT_EQ(i260.extractBits(4, 256).getZExtValue(), 0x000000000000000Full); 2026 } 2027 2028 TEST(APIntTest, insertBitsUInt64) { 2029 // Tests cloned from insertBits but adapted to the numBits <= 64 constraint 2030 uint64_t iSrc = 0x00123456; 2031 2032 // Direct copy. 2033 APInt i31(31, 0x76543210ull); 2034 i31.insertBits(iSrc, 0, 31); 2035 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2036 2037 // Single word src/dst insertion. 2038 APInt i63(63, 0x01234567FFFFFFFFull); 2039 i63.insertBits(iSrc, 4, 31); 2040 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2041 2042 // Insert single word src into one word of dst. 2043 APInt i120(120, UINT64_MAX, true); 2044 i120.insertBits(iSrc, 8, 31); 2045 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2046 2047 // Insert single word src into two words of dst. 2048 APInt i127(127, UINT64_MAX, true); 2049 i127.insertBits(iSrc, 48, 31); 2050 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2051 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2052 2053 // Insert on word boundaries. 2054 APInt i128(128, 0); 2055 i128.insertBits(UINT64_MAX, 0, 64); 2056 i128.insertBits(UINT64_MAX, 64, 64); 2057 EXPECT_EQ(-1, i128.getSExtValue()); 2058 2059 APInt i256(256, UINT64_MAX, true); 2060 i256.insertBits(0, 0, 64); 2061 i256.insertBits(0, 64, 1); 2062 i256.insertBits(0, 64, 64); 2063 i256.insertBits(0, 128, 5); 2064 i256.insertBits(0, 128, 64); 2065 i256.insertBits(0, 192, 64); 2066 EXPECT_EQ(0u, i256.getSExtValue()); 2067 2068 APInt i257(257, 0); 2069 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2070 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 0), 0x0000000000000000ull); 2071 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 64), 0xFFFFFFFFFFFFFFFFull); 2072 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 128), 0x00000000FFFFFFFFull); 2073 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 192), 0x0000000000000000ull); 2074 EXPECT_EQ(i257.extractBitsAsZExtValue(1, 256), 0x0000000000000000ull); 2075 2076 // General insertion. 2077 APInt i260(260, UINT64_MAX, true); 2078 i260.insertBits(APInt(129, 1ull << 48), 15); 2079 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 0), 0x8000000000007FFFull); 2080 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 64), 0x0000000000000000ull); 2081 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 128), 0xFFFFFFFFFFFF0000ull); 2082 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 192), 0xFFFFFFFFFFFFFFFFull); 2083 EXPECT_EQ(i260.extractBitsAsZExtValue(4, 256), 0x000000000000000Full); 2084 } 2085 2086 TEST(APIntTest, extractBits) { 2087 APInt i32(32, 0x1234567); 2088 EXPECT_EQ(0x3456, i32.extractBits(16, 4)); 2089 2090 APInt i64(64, 0x01234567FFFFFFFFull); 2091 EXPECT_EQ(0xFFFFFFFF, i64.extractBits(32, 0)); 2092 EXPECT_EQ(0xFFFFFFFF, i64.trunc(32)); 2093 EXPECT_EQ(0x01234567, i64.extractBits(32, 32)); 2094 EXPECT_EQ(0x01234567, i64.lshr(32).trunc(32)); 2095 2096 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2097 EXPECT_EQ(0xFFu, i257.extractBits(16, 0)); 2098 EXPECT_EQ(0xFFu, i257.lshr(0).trunc(16)); 2099 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1)); 2100 EXPECT_EQ((0xFFu >> 1), i257.lshr(1).trunc(16)); 2101 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue()); 2102 EXPECT_EQ(-1, i257.lshr(64).trunc(32).getSExtValue()); 2103 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue()); 2104 EXPECT_EQ(-1, i257.lshr(128).trunc(128).getSExtValue()); 2105 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue()); 2106 EXPECT_EQ(-1, i257.lshr(191).trunc(66).getSExtValue()); 2107 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2108 i257.extractBits(128, 1).getSExtValue()); 2109 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2110 i257.lshr(1).trunc(128).getSExtValue()); 2111 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2112 i257.extractBits(129, 1).getSExtValue()); 2113 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2114 i257.lshr(1).trunc(129).getSExtValue()); 2115 2116 EXPECT_EQ(APInt(48, 0), 2117 APInt(144, "281474976710655", 10).extractBits(48, 48)); 2118 EXPECT_EQ(APInt(48, 0), 2119 APInt(144, "281474976710655", 10).lshr(48).trunc(48)); 2120 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2121 APInt(144, "281474976710655", 10).extractBits(48, 0)); 2122 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2123 APInt(144, "281474976710655", 10).lshr(0).trunc(48)); 2124 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2125 APInt(144, "281474976710655", 10).extractBits(48, 1)); 2126 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2127 APInt(144, "281474976710655", 10).lshr(1).trunc(48)); 2128 } 2129 2130 TEST(APIntTest, extractBitsAsZExtValue) { 2131 // Tests based on extractBits 2132 APInt i32(32, 0x1234567); 2133 EXPECT_EQ(0x3456u, i32.extractBitsAsZExtValue(16, 4)); 2134 2135 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2136 EXPECT_EQ(0xFFu, i257.extractBitsAsZExtValue(16, 0)); 2137 EXPECT_EQ((0xFFu >> 1), i257.extractBitsAsZExtValue(16, 1)); 2138 EXPECT_EQ(0xFFFFFFFFull, i257.extractBitsAsZExtValue(32, 64)); 2139 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 128)); 2140 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 192)); 2141 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 191)); 2142 EXPECT_EQ(0x3u, i257.extractBitsAsZExtValue(2, 255)); 2143 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2144 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2145 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2146 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2147 EXPECT_EQ(0x1ull, i257.extractBitsAsZExtValue(1, 129)); 2148 2149 EXPECT_EQ(APInt(48, 0), 2150 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 48)); 2151 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2152 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 0)); 2153 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2154 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 1)); 2155 } 2156 2157 TEST(APIntTest, getLowBitsSet) { 2158 APInt i128lo64 = APInt::getLowBitsSet(128, 64); 2159 EXPECT_EQ(0u, i128lo64.countl_one()); 2160 EXPECT_EQ(64u, i128lo64.countl_zero()); 2161 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2162 EXPECT_EQ(0u, i128lo64.countr_zero()); 2163 EXPECT_EQ(64u, i128lo64.countr_one()); 2164 EXPECT_EQ(64u, i128lo64.popcount()); 2165 } 2166 2167 TEST(APIntTest, getBitsSet) { 2168 APInt i64hi1lo1 = APInt::getBitsSet(64, 1, 63); 2169 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2170 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2171 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2172 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2173 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2174 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2175 2176 APInt i127hi1lo1 = APInt::getBitsSet(127, 1, 126); 2177 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2178 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2179 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2180 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2181 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2182 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2183 } 2184 2185 TEST(APIntTest, getBitsSetWithWrap) { 2186 APInt i64hi1lo1 = APInt::getBitsSetWithWrap(64, 1, 63); 2187 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2188 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2189 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2190 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2191 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2192 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2193 2194 APInt i127hi1lo1 = APInt::getBitsSetWithWrap(127, 1, 126); 2195 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2196 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2197 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2198 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2199 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2200 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2201 2202 APInt i64hi1lo1wrap = APInt::getBitsSetWithWrap(64, 63, 1); 2203 EXPECT_EQ(1u, i64hi1lo1wrap.countl_one()); 2204 EXPECT_EQ(0u, i64hi1lo1wrap.countl_zero()); 2205 EXPECT_EQ(64u, i64hi1lo1wrap.getActiveBits()); 2206 EXPECT_EQ(0u, i64hi1lo1wrap.countr_zero()); 2207 EXPECT_EQ(1u, i64hi1lo1wrap.countr_one()); 2208 EXPECT_EQ(2u, i64hi1lo1wrap.popcount()); 2209 2210 APInt i127hi1lo1wrap = APInt::getBitsSetWithWrap(127, 126, 1); 2211 EXPECT_EQ(1u, i127hi1lo1wrap.countl_one()); 2212 EXPECT_EQ(0u, i127hi1lo1wrap.countl_zero()); 2213 EXPECT_EQ(127u, i127hi1lo1wrap.getActiveBits()); 2214 EXPECT_EQ(0u, i127hi1lo1wrap.countr_zero()); 2215 EXPECT_EQ(1u, i127hi1lo1wrap.countr_one()); 2216 EXPECT_EQ(2u, i127hi1lo1wrap.popcount()); 2217 2218 APInt i32hiequallowrap = APInt::getBitsSetWithWrap(32, 10, 10); 2219 EXPECT_EQ(32u, i32hiequallowrap.countl_one()); 2220 EXPECT_EQ(0u, i32hiequallowrap.countl_zero()); 2221 EXPECT_EQ(32u, i32hiequallowrap.getActiveBits()); 2222 EXPECT_EQ(0u, i32hiequallowrap.countr_zero()); 2223 EXPECT_EQ(32u, i32hiequallowrap.countr_one()); 2224 EXPECT_EQ(32u, i32hiequallowrap.popcount()); 2225 } 2226 2227 TEST(APIntTest, getHighBitsSet) { 2228 APInt i64hi32 = APInt::getHighBitsSet(64, 32); 2229 EXPECT_EQ(32u, i64hi32.countl_one()); 2230 EXPECT_EQ(0u, i64hi32.countl_zero()); 2231 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2232 EXPECT_EQ(32u, i64hi32.countr_zero()); 2233 EXPECT_EQ(0u, i64hi32.countr_one()); 2234 EXPECT_EQ(32u, i64hi32.popcount()); 2235 } 2236 2237 TEST(APIntTest, getBitsSetFrom) { 2238 APInt i64hi31 = APInt::getBitsSetFrom(64, 33); 2239 EXPECT_EQ(31u, i64hi31.countl_one()); 2240 EXPECT_EQ(0u, i64hi31.countl_zero()); 2241 EXPECT_EQ(64u, i64hi31.getActiveBits()); 2242 EXPECT_EQ(33u, i64hi31.countr_zero()); 2243 EXPECT_EQ(0u, i64hi31.countr_one()); 2244 EXPECT_EQ(31u, i64hi31.popcount()); 2245 } 2246 2247 TEST(APIntTest, setLowBits) { 2248 APInt i64lo32(64, 0); 2249 i64lo32.setLowBits(32); 2250 EXPECT_EQ(0u, i64lo32.countl_one()); 2251 EXPECT_EQ(32u, i64lo32.countl_zero()); 2252 EXPECT_EQ(32u, i64lo32.getActiveBits()); 2253 EXPECT_EQ(0u, i64lo32.countr_zero()); 2254 EXPECT_EQ(32u, i64lo32.countr_one()); 2255 EXPECT_EQ(32u, i64lo32.popcount()); 2256 2257 APInt i128lo64(128, 0); 2258 i128lo64.setLowBits(64); 2259 EXPECT_EQ(0u, i128lo64.countl_one()); 2260 EXPECT_EQ(64u, i128lo64.countl_zero()); 2261 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2262 EXPECT_EQ(0u, i128lo64.countr_zero()); 2263 EXPECT_EQ(64u, i128lo64.countr_one()); 2264 EXPECT_EQ(64u, i128lo64.popcount()); 2265 2266 APInt i128lo24(128, 0); 2267 i128lo24.setLowBits(24); 2268 EXPECT_EQ(0u, i128lo24.countl_one()); 2269 EXPECT_EQ(104u, i128lo24.countl_zero()); 2270 EXPECT_EQ(24u, i128lo24.getActiveBits()); 2271 EXPECT_EQ(0u, i128lo24.countr_zero()); 2272 EXPECT_EQ(24u, i128lo24.countr_one()); 2273 EXPECT_EQ(24u, i128lo24.popcount()); 2274 2275 APInt i128lo104(128, 0); 2276 i128lo104.setLowBits(104); 2277 EXPECT_EQ(0u, i128lo104.countl_one()); 2278 EXPECT_EQ(24u, i128lo104.countl_zero()); 2279 EXPECT_EQ(104u, i128lo104.getActiveBits()); 2280 EXPECT_EQ(0u, i128lo104.countr_zero()); 2281 EXPECT_EQ(104u, i128lo104.countr_one()); 2282 EXPECT_EQ(104u, i128lo104.popcount()); 2283 2284 APInt i128lo0(128, 0); 2285 i128lo0.setLowBits(0); 2286 EXPECT_EQ(0u, i128lo0.countl_one()); 2287 EXPECT_EQ(128u, i128lo0.countl_zero()); 2288 EXPECT_EQ(0u, i128lo0.getActiveBits()); 2289 EXPECT_EQ(128u, i128lo0.countr_zero()); 2290 EXPECT_EQ(0u, i128lo0.countr_one()); 2291 EXPECT_EQ(0u, i128lo0.popcount()); 2292 2293 APInt i80lo79(80, 0); 2294 i80lo79.setLowBits(79); 2295 EXPECT_EQ(0u, i80lo79.countl_one()); 2296 EXPECT_EQ(1u, i80lo79.countl_zero()); 2297 EXPECT_EQ(79u, i80lo79.getActiveBits()); 2298 EXPECT_EQ(0u, i80lo79.countr_zero()); 2299 EXPECT_EQ(79u, i80lo79.countr_one()); 2300 EXPECT_EQ(79u, i80lo79.popcount()); 2301 } 2302 2303 TEST(APIntTest, setHighBits) { 2304 APInt i64hi32(64, 0); 2305 i64hi32.setHighBits(32); 2306 EXPECT_EQ(32u, i64hi32.countl_one()); 2307 EXPECT_EQ(0u, i64hi32.countl_zero()); 2308 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2309 EXPECT_EQ(32u, i64hi32.countr_zero()); 2310 EXPECT_EQ(0u, i64hi32.countr_one()); 2311 EXPECT_EQ(32u, i64hi32.popcount()); 2312 2313 APInt i128hi64(128, 0); 2314 i128hi64.setHighBits(64); 2315 EXPECT_EQ(64u, i128hi64.countl_one()); 2316 EXPECT_EQ(0u, i128hi64.countl_zero()); 2317 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2318 EXPECT_EQ(64u, i128hi64.countr_zero()); 2319 EXPECT_EQ(0u, i128hi64.countr_one()); 2320 EXPECT_EQ(64u, i128hi64.popcount()); 2321 2322 APInt i128hi24(128, 0); 2323 i128hi24.setHighBits(24); 2324 EXPECT_EQ(24u, i128hi24.countl_one()); 2325 EXPECT_EQ(0u, i128hi24.countl_zero()); 2326 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2327 EXPECT_EQ(104u, i128hi24.countr_zero()); 2328 EXPECT_EQ(0u, i128hi24.countr_one()); 2329 EXPECT_EQ(24u, i128hi24.popcount()); 2330 2331 APInt i128hi104(128, 0); 2332 i128hi104.setHighBits(104); 2333 EXPECT_EQ(104u, i128hi104.countl_one()); 2334 EXPECT_EQ(0u, i128hi104.countl_zero()); 2335 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2336 EXPECT_EQ(24u, i128hi104.countr_zero()); 2337 EXPECT_EQ(0u, i128hi104.countr_one()); 2338 EXPECT_EQ(104u, i128hi104.popcount()); 2339 2340 APInt i128hi0(128, 0); 2341 i128hi0.setHighBits(0); 2342 EXPECT_EQ(0u, i128hi0.countl_one()); 2343 EXPECT_EQ(128u, i128hi0.countl_zero()); 2344 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2345 EXPECT_EQ(128u, i128hi0.countr_zero()); 2346 EXPECT_EQ(0u, i128hi0.countr_one()); 2347 EXPECT_EQ(0u, i128hi0.popcount()); 2348 2349 APInt i80hi1(80, 0); 2350 i80hi1.setHighBits(1); 2351 EXPECT_EQ(1u, i80hi1.countl_one()); 2352 EXPECT_EQ(0u, i80hi1.countl_zero()); 2353 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2354 EXPECT_EQ(79u, i80hi1.countr_zero()); 2355 EXPECT_EQ(0u, i80hi1.countr_one()); 2356 EXPECT_EQ(1u, i80hi1.popcount()); 2357 2358 APInt i32hi16(32, 0); 2359 i32hi16.setHighBits(16); 2360 EXPECT_EQ(16u, i32hi16.countl_one()); 2361 EXPECT_EQ(0u, i32hi16.countl_zero()); 2362 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2363 EXPECT_EQ(16u, i32hi16.countr_zero()); 2364 EXPECT_EQ(0u, i32hi16.countr_one()); 2365 EXPECT_EQ(16u, i32hi16.popcount()); 2366 } 2367 2368 TEST(APIntTest, setBitsFrom) { 2369 APInt i64from63(64, 0); 2370 i64from63.setBitsFrom(63); 2371 EXPECT_EQ(1u, i64from63.countl_one()); 2372 EXPECT_EQ(0u, i64from63.countl_zero()); 2373 EXPECT_EQ(64u, i64from63.getActiveBits()); 2374 EXPECT_EQ(63u, i64from63.countr_zero()); 2375 EXPECT_EQ(0u, i64from63.countr_one()); 2376 EXPECT_EQ(1u, i64from63.popcount()); 2377 } 2378 2379 TEST(APIntTest, setAllBits) { 2380 APInt i32(32, 0); 2381 i32.setAllBits(); 2382 EXPECT_EQ(32u, i32.countl_one()); 2383 EXPECT_EQ(0u, i32.countl_zero()); 2384 EXPECT_EQ(32u, i32.getActiveBits()); 2385 EXPECT_EQ(0u, i32.countr_zero()); 2386 EXPECT_EQ(32u, i32.countr_one()); 2387 EXPECT_EQ(32u, i32.popcount()); 2388 2389 APInt i64(64, 0); 2390 i64.setAllBits(); 2391 EXPECT_EQ(64u, i64.countl_one()); 2392 EXPECT_EQ(0u, i64.countl_zero()); 2393 EXPECT_EQ(64u, i64.getActiveBits()); 2394 EXPECT_EQ(0u, i64.countr_zero()); 2395 EXPECT_EQ(64u, i64.countr_one()); 2396 EXPECT_EQ(64u, i64.popcount()); 2397 2398 APInt i96(96, 0); 2399 i96.setAllBits(); 2400 EXPECT_EQ(96u, i96.countl_one()); 2401 EXPECT_EQ(0u, i96.countl_zero()); 2402 EXPECT_EQ(96u, i96.getActiveBits()); 2403 EXPECT_EQ(0u, i96.countr_zero()); 2404 EXPECT_EQ(96u, i96.countr_one()); 2405 EXPECT_EQ(96u, i96.popcount()); 2406 2407 APInt i128(128, 0); 2408 i128.setAllBits(); 2409 EXPECT_EQ(128u, i128.countl_one()); 2410 EXPECT_EQ(0u, i128.countl_zero()); 2411 EXPECT_EQ(128u, i128.getActiveBits()); 2412 EXPECT_EQ(0u, i128.countr_zero()); 2413 EXPECT_EQ(128u, i128.countr_one()); 2414 EXPECT_EQ(128u, i128.popcount()); 2415 } 2416 2417 TEST(APIntTest, getLoBits) { 2418 APInt i32(32, 0xfa); 2419 i32.setHighBits(1); 2420 EXPECT_EQ(0xa, i32.getLoBits(4)); 2421 APInt i128(128, 0xfa); 2422 i128.setHighBits(1); 2423 EXPECT_EQ(0xa, i128.getLoBits(4)); 2424 } 2425 2426 TEST(APIntTest, getHiBits) { 2427 APInt i32(32, 0xfa); 2428 i32.setHighBits(2); 2429 EXPECT_EQ(0xc, i32.getHiBits(4)); 2430 APInt i128(128, 0xfa); 2431 i128.setHighBits(2); 2432 EXPECT_EQ(0xc, i128.getHiBits(4)); 2433 } 2434 2435 TEST(APIntTest, clearLowBits) { 2436 APInt i64hi32 = APInt::getAllOnes(64); 2437 i64hi32.clearLowBits(32); 2438 EXPECT_EQ(32u, i64hi32.countl_one()); 2439 EXPECT_EQ(0u, i64hi32.countl_zero()); 2440 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2441 EXPECT_EQ(32u, i64hi32.countr_zero()); 2442 EXPECT_EQ(0u, i64hi32.countr_one()); 2443 EXPECT_EQ(32u, i64hi32.popcount()); 2444 2445 APInt i128hi64 = APInt::getAllOnes(128); 2446 i128hi64.clearLowBits(64); 2447 EXPECT_EQ(64u, i128hi64.countl_one()); 2448 EXPECT_EQ(0u, i128hi64.countl_zero()); 2449 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2450 EXPECT_EQ(64u, i128hi64.countr_zero()); 2451 EXPECT_EQ(0u, i128hi64.countr_one()); 2452 EXPECT_EQ(64u, i128hi64.popcount()); 2453 2454 APInt i128hi24 = APInt::getAllOnes(128); 2455 i128hi24.clearLowBits(104); 2456 EXPECT_EQ(24u, i128hi24.countl_one()); 2457 EXPECT_EQ(0u, i128hi24.countl_zero()); 2458 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2459 EXPECT_EQ(104u, i128hi24.countr_zero()); 2460 EXPECT_EQ(0u, i128hi24.countr_one()); 2461 EXPECT_EQ(24u, i128hi24.popcount()); 2462 2463 APInt i128hi104 = APInt::getAllOnes(128); 2464 i128hi104.clearLowBits(24); 2465 EXPECT_EQ(104u, i128hi104.countl_one()); 2466 EXPECT_EQ(0u, i128hi104.countl_zero()); 2467 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2468 EXPECT_EQ(24u, i128hi104.countr_zero()); 2469 EXPECT_EQ(0u, i128hi104.countr_one()); 2470 EXPECT_EQ(104u, i128hi104.popcount()); 2471 2472 APInt i128hi0 = APInt::getAllOnes(128); 2473 i128hi0.clearLowBits(128); 2474 EXPECT_EQ(0u, i128hi0.countl_one()); 2475 EXPECT_EQ(128u, i128hi0.countl_zero()); 2476 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2477 EXPECT_EQ(128u, i128hi0.countr_zero()); 2478 EXPECT_EQ(0u, i128hi0.countr_one()); 2479 EXPECT_EQ(0u, i128hi0.popcount()); 2480 2481 APInt i80hi1 = APInt::getAllOnes(80); 2482 i80hi1.clearLowBits(79); 2483 EXPECT_EQ(1u, i80hi1.countl_one()); 2484 EXPECT_EQ(0u, i80hi1.countl_zero()); 2485 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2486 EXPECT_EQ(79u, i80hi1.countr_zero()); 2487 EXPECT_EQ(0u, i80hi1.countr_one()); 2488 EXPECT_EQ(1u, i80hi1.popcount()); 2489 2490 APInt i32hi16 = APInt::getAllOnes(32); 2491 i32hi16.clearLowBits(16); 2492 EXPECT_EQ(16u, i32hi16.countl_one()); 2493 EXPECT_EQ(0u, i32hi16.countl_zero()); 2494 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2495 EXPECT_EQ(16u, i32hi16.countr_zero()); 2496 EXPECT_EQ(0u, i32hi16.countr_one()); 2497 EXPECT_EQ(16u, i32hi16.popcount()); 2498 } 2499 2500 TEST(APIntTest, AbsDiff) { 2501 using APIntOps::absdiff; 2502 2503 APInt MaxU1(1, 1, false); 2504 APInt MinU1(1, 0, false); 2505 EXPECT_EQ(1u, absdiff(MaxU1, MinU1).getZExtValue()); 2506 EXPECT_EQ(1u, absdiff(MinU1, MaxU1).getZExtValue()); 2507 2508 APInt MaxU4(4, 15, false); 2509 APInt MinU4(4, 0, false); 2510 EXPECT_EQ(15u, absdiff(MaxU4, MinU4).getZExtValue()); 2511 EXPECT_EQ(15u, absdiff(MinU4, MaxU4).getZExtValue()); 2512 2513 APInt MaxS8(8, 127, true); 2514 APInt MinS8(8, -128, true); 2515 EXPECT_EQ(1u, absdiff(MaxS8, MinS8).getZExtValue()); 2516 EXPECT_EQ(1u, absdiff(MinS8, MaxS8).getZExtValue()); 2517 2518 APInt MaxU16(16, 65535, false); 2519 APInt MinU16(16, 0, false); 2520 EXPECT_EQ(65535u, absdiff(MaxU16, MinU16).getZExtValue()); 2521 EXPECT_EQ(65535u, absdiff(MinU16, MaxU16).getZExtValue()); 2522 2523 APInt MaxS16(16, 32767, true); 2524 APInt MinS16(16, -32768, true); 2525 APInt ZeroS16(16, 0, true); 2526 EXPECT_EQ(1u, absdiff(MaxS16, MinS16).getZExtValue()); 2527 EXPECT_EQ(1u, absdiff(MinS16, MaxS16).getZExtValue()); 2528 EXPECT_EQ(32768u, absdiff(ZeroS16, MinS16)); 2529 EXPECT_EQ(32768u, absdiff(MinS16, ZeroS16)); 2530 EXPECT_EQ(32767u, absdiff(ZeroS16, MaxS16)); 2531 EXPECT_EQ(32767u, absdiff(MaxS16, ZeroS16)); 2532 } 2533 2534 TEST(APIntTest, GCD) { 2535 using APIntOps::GreatestCommonDivisor; 2536 2537 for (unsigned Bits : {1, 2, 32, 63, 64, 65}) { 2538 // Test some corner cases near zero. 2539 APInt Zero(Bits, 0), One(Bits, 1); 2540 EXPECT_EQ(GreatestCommonDivisor(Zero, Zero), Zero); 2541 EXPECT_EQ(GreatestCommonDivisor(Zero, One), One); 2542 EXPECT_EQ(GreatestCommonDivisor(One, Zero), One); 2543 EXPECT_EQ(GreatestCommonDivisor(One, One), One); 2544 2545 if (Bits > 1) { 2546 APInt Two(Bits, 2); 2547 EXPECT_EQ(GreatestCommonDivisor(Zero, Two), Two); 2548 EXPECT_EQ(GreatestCommonDivisor(One, Two), One); 2549 EXPECT_EQ(GreatestCommonDivisor(Two, Two), Two); 2550 2551 // Test some corner cases near the highest representable value. 2552 APInt Max(Bits, 0); 2553 Max.setAllBits(); 2554 EXPECT_EQ(GreatestCommonDivisor(Zero, Max), Max); 2555 EXPECT_EQ(GreatestCommonDivisor(One, Max), One); 2556 EXPECT_EQ(GreatestCommonDivisor(Two, Max), One); 2557 EXPECT_EQ(GreatestCommonDivisor(Max, Max), Max); 2558 2559 APInt MaxOver2 = Max.udiv(Two); 2560 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max), One); 2561 // Max - 1 == Max / 2 * 2, because Max is odd. 2562 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max - 1), MaxOver2); 2563 } 2564 } 2565 2566 // Compute the 20th Mersenne prime. 2567 const unsigned BitWidth = 4450; 2568 APInt HugePrime = APInt::getLowBitsSet(BitWidth, 4423); 2569 2570 // 9931 and 123456 are coprime. 2571 APInt A = HugePrime * APInt(BitWidth, 9931); 2572 APInt B = HugePrime * APInt(BitWidth, 123456); 2573 APInt C = GreatestCommonDivisor(A, B); 2574 EXPECT_EQ(C, HugePrime); 2575 } 2576 2577 TEST(APIntTest, LogicalRightShift) { 2578 APInt i256(APInt::getHighBitsSet(256, 2)); 2579 2580 i256.lshrInPlace(1); 2581 EXPECT_EQ(1U, i256.countl_zero()); 2582 EXPECT_EQ(253U, i256.countr_zero()); 2583 EXPECT_EQ(2U, i256.popcount()); 2584 2585 i256.lshrInPlace(62); 2586 EXPECT_EQ(63U, i256.countl_zero()); 2587 EXPECT_EQ(191U, i256.countr_zero()); 2588 EXPECT_EQ(2U, i256.popcount()); 2589 2590 i256.lshrInPlace(65); 2591 EXPECT_EQ(128U, i256.countl_zero()); 2592 EXPECT_EQ(126U, i256.countr_zero()); 2593 EXPECT_EQ(2U, i256.popcount()); 2594 2595 i256.lshrInPlace(64); 2596 EXPECT_EQ(192U, i256.countl_zero()); 2597 EXPECT_EQ(62U, i256.countr_zero()); 2598 EXPECT_EQ(2U, i256.popcount()); 2599 2600 i256.lshrInPlace(63); 2601 EXPECT_EQ(255U, i256.countl_zero()); 2602 EXPECT_EQ(0U, i256.countr_zero()); 2603 EXPECT_EQ(1U, i256.popcount()); 2604 2605 // Ensure we handle large shifts of multi-word. 2606 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2607 EXPECT_EQ(0, neg_one.lshr(128)); 2608 } 2609 2610 TEST(APIntTest, ArithmeticRightShift) { 2611 APInt i72(APInt::getHighBitsSet(72, 1)); 2612 i72.ashrInPlace(46); 2613 EXPECT_EQ(47U, i72.countl_one()); 2614 EXPECT_EQ(25U, i72.countr_zero()); 2615 EXPECT_EQ(47U, i72.popcount()); 2616 2617 i72 = APInt::getHighBitsSet(72, 1); 2618 i72.ashrInPlace(64); 2619 EXPECT_EQ(65U, i72.countl_one()); 2620 EXPECT_EQ(7U, i72.countr_zero()); 2621 EXPECT_EQ(65U, i72.popcount()); 2622 2623 APInt i128(APInt::getHighBitsSet(128, 1)); 2624 i128.ashrInPlace(64); 2625 EXPECT_EQ(65U, i128.countl_one()); 2626 EXPECT_EQ(63U, i128.countr_zero()); 2627 EXPECT_EQ(65U, i128.popcount()); 2628 2629 // Ensure we handle large shifts of multi-word. 2630 const APInt signmin32(APInt::getSignedMinValue(32)); 2631 EXPECT_TRUE(signmin32.ashr(32).isAllOnes()); 2632 2633 // Ensure we handle large shifts of multi-word. 2634 const APInt umax32(APInt::getSignedMaxValue(32)); 2635 EXPECT_EQ(0, umax32.ashr(32)); 2636 2637 // Ensure we handle large shifts of multi-word. 2638 const APInt signmin128(APInt::getSignedMinValue(128)); 2639 EXPECT_TRUE(signmin128.ashr(128).isAllOnes()); 2640 2641 // Ensure we handle large shifts of multi-word. 2642 const APInt umax128(APInt::getSignedMaxValue(128)); 2643 EXPECT_EQ(0, umax128.ashr(128)); 2644 } 2645 2646 TEST(APIntTest, LeftShift) { 2647 APInt i256(APInt::getLowBitsSet(256, 2)); 2648 2649 i256 <<= 1; 2650 EXPECT_EQ(253U, i256.countl_zero()); 2651 EXPECT_EQ(1U, i256.countr_zero()); 2652 EXPECT_EQ(2U, i256.popcount()); 2653 2654 i256 <<= 62; 2655 EXPECT_EQ(191U, i256.countl_zero()); 2656 EXPECT_EQ(63U, i256.countr_zero()); 2657 EXPECT_EQ(2U, i256.popcount()); 2658 2659 i256 <<= 65; 2660 EXPECT_EQ(126U, i256.countl_zero()); 2661 EXPECT_EQ(128U, i256.countr_zero()); 2662 EXPECT_EQ(2U, i256.popcount()); 2663 2664 i256 <<= 64; 2665 EXPECT_EQ(62U, i256.countl_zero()); 2666 EXPECT_EQ(192U, i256.countr_zero()); 2667 EXPECT_EQ(2U, i256.popcount()); 2668 2669 i256 <<= 63; 2670 EXPECT_EQ(0U, i256.countl_zero()); 2671 EXPECT_EQ(255U, i256.countr_zero()); 2672 EXPECT_EQ(1U, i256.popcount()); 2673 2674 // Ensure we handle large shifts of multi-word. 2675 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2676 EXPECT_EQ(0, neg_one.shl(128)); 2677 } 2678 2679 TEST(APIntTest, isSubsetOf) { 2680 APInt i32_1(32, 1); 2681 APInt i32_2(32, 2); 2682 APInt i32_3(32, 3); 2683 EXPECT_FALSE(i32_3.isSubsetOf(i32_1)); 2684 EXPECT_TRUE(i32_1.isSubsetOf(i32_3)); 2685 EXPECT_FALSE(i32_2.isSubsetOf(i32_1)); 2686 EXPECT_FALSE(i32_1.isSubsetOf(i32_2)); 2687 EXPECT_TRUE(i32_3.isSubsetOf(i32_3)); 2688 2689 APInt i128_1(128, 1); 2690 APInt i128_2(128, 2); 2691 APInt i128_3(128, 3); 2692 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2693 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2694 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2695 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2696 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2697 2698 i128_1 <<= 64; 2699 i128_2 <<= 64; 2700 i128_3 <<= 64; 2701 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2702 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2703 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2704 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2705 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2706 } 2707 2708 TEST(APIntTest, sext) { 2709 EXPECT_EQ(0, APInt(1, 0).sext(64)); 2710 EXPECT_EQ(~uint64_t(0), APInt(1, 1).sext(64)); 2711 2712 APInt i32_max(APInt::getSignedMaxValue(32).sext(63)); 2713 EXPECT_EQ(i32_max, i32_max.sext(63)); 2714 EXPECT_EQ(32U, i32_max.countl_zero()); 2715 EXPECT_EQ(0U, i32_max.countr_zero()); 2716 EXPECT_EQ(31U, i32_max.popcount()); 2717 2718 APInt i32_min(APInt::getSignedMinValue(32).sext(63)); 2719 EXPECT_EQ(i32_min, i32_min.sext(63)); 2720 EXPECT_EQ(32U, i32_min.countl_one()); 2721 EXPECT_EQ(31U, i32_min.countr_zero()); 2722 EXPECT_EQ(32U, i32_min.popcount()); 2723 2724 APInt i32_neg1(APInt(32, ~uint64_t(0)).sext(63)); 2725 EXPECT_EQ(i32_neg1, i32_neg1.sext(63)); 2726 EXPECT_EQ(63U, i32_neg1.countl_one()); 2727 EXPECT_EQ(0U, i32_neg1.countr_zero()); 2728 EXPECT_EQ(63U, i32_neg1.popcount()); 2729 } 2730 2731 TEST(APIntTest, trunc) { 2732 APInt val(32, 0xFFFFFFFF); 2733 EXPECT_EQ(0xFFFF, val.trunc(16)); 2734 EXPECT_EQ(0xFFFFFFFF, val.trunc(32)); 2735 } 2736 2737 TEST(APIntTest, concat) { 2738 APInt Int1(4, 0x1ULL); 2739 APInt Int3(4, 0x3ULL); 2740 2741 EXPECT_EQ(0x31, Int3.concat(Int1)); 2742 EXPECT_EQ(APInt(12, 0x313), Int3.concat(Int1).concat(Int3)); 2743 EXPECT_EQ(APInt(16, 0x3313), Int3.concat(Int3).concat(Int1).concat(Int3)); 2744 2745 APInt I64(64, 0x3ULL); 2746 EXPECT_EQ(I64, I64.concat(I64).lshr(64).trunc(64)); 2747 2748 APInt I65(65, 0x3ULL); 2749 APInt I0 = APInt::getZeroWidth(); 2750 EXPECT_EQ(I65, I65.concat(I0)); 2751 EXPECT_EQ(I65, I0.concat(I65)); 2752 } 2753 2754 TEST(APIntTest, multiply) { 2755 APInt i64(64, 1234); 2756 2757 EXPECT_EQ(7006652, i64 * 5678); 2758 EXPECT_EQ(7006652, 5678 * i64); 2759 2760 APInt i128 = APInt::getOneBitSet(128, 64); 2761 APInt i128_1234(128, 1234); 2762 i128_1234 <<= 64; 2763 EXPECT_EQ(i128_1234, i128 * 1234); 2764 EXPECT_EQ(i128_1234, 1234 * i128); 2765 2766 APInt i96 = APInt::getOneBitSet(96, 64); 2767 i96 *= ~0ULL; 2768 EXPECT_EQ(32U, i96.countl_one()); 2769 EXPECT_EQ(32U, i96.popcount()); 2770 EXPECT_EQ(64U, i96.countr_zero()); 2771 } 2772 2773 TEST(APIntTest, RoundingUDiv) { 2774 for (uint64_t Ai = 1; Ai <= 255; Ai++) { 2775 APInt A(8, Ai); 2776 APInt Zero(8, 0); 2777 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::UP)); 2778 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::DOWN)); 2779 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2780 2781 for (uint64_t Bi = 1; Bi <= 255; Bi++) { 2782 APInt B(8, Bi); 2783 { 2784 APInt Quo = APIntOps::RoundingUDiv(A, B, APInt::Rounding::UP); 2785 auto Prod = Quo.zext(16) * B.zext(16); 2786 EXPECT_TRUE(Prod.uge(Ai)); 2787 if (Prod.ugt(Ai)) { 2788 EXPECT_TRUE(((Quo - 1).zext(16) * B.zext(16)).ult(Ai)); 2789 } 2790 } 2791 { 2792 APInt Quo = A.udiv(B); 2793 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2794 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::DOWN)); 2795 } 2796 } 2797 } 2798 } 2799 2800 TEST(APIntTest, RoundingSDiv) { 2801 for (int64_t Ai = -128; Ai <= 127; Ai++) { 2802 APInt A(8, Ai); 2803 2804 if (Ai != 0) { 2805 APInt Zero(8, 0); 2806 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::UP)); 2807 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::DOWN)); 2808 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2809 } 2810 2811 for (int64_t Bi = -128; Bi <= 127; Bi++) { 2812 if (Bi == 0) 2813 continue; 2814 2815 APInt B(8, Bi); 2816 APInt QuoTowardZero = A.sdiv(B); 2817 { 2818 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::UP); 2819 if (A.srem(B).isZero()) { 2820 EXPECT_EQ(QuoTowardZero, Quo); 2821 } else if (A.isNegative() != 2822 B.isNegative()) { // if the math quotient is negative. 2823 EXPECT_EQ(QuoTowardZero, Quo); 2824 } else { 2825 EXPECT_EQ(QuoTowardZero + 1, Quo); 2826 } 2827 } 2828 { 2829 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::DOWN); 2830 if (A.srem(B).isZero()) { 2831 EXPECT_EQ(QuoTowardZero, Quo); 2832 } else if (A.isNegative() != 2833 B.isNegative()) { // if the math quotient is negative. 2834 EXPECT_EQ(QuoTowardZero - 1, Quo); 2835 } else { 2836 EXPECT_EQ(QuoTowardZero, Quo); 2837 } 2838 } 2839 EXPECT_EQ(QuoTowardZero, 2840 APIntOps::RoundingSDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2841 } 2842 } 2843 } 2844 2845 TEST(APIntTest, umul_ov) { 2846 const std::pair<uint64_t, uint64_t> Overflows[] = { 2847 {0x8000000000000000, 2}, 2848 {0x5555555555555556, 3}, 2849 {4294967296, 4294967296}, 2850 {4294967295, 4294967298}, 2851 }; 2852 const std::pair<uint64_t, uint64_t> NonOverflows[] = { 2853 {0x7fffffffffffffff, 2}, 2854 {0x5555555555555555, 3}, 2855 {4294967295, 4294967297}, 2856 }; 2857 2858 bool Overflow; 2859 for (auto &X : Overflows) { 2860 APInt A(64, X.first); 2861 APInt B(64, X.second); 2862 (void)A.umul_ov(B, Overflow); 2863 EXPECT_TRUE(Overflow); 2864 } 2865 for (auto &X : NonOverflows) { 2866 APInt A(64, X.first); 2867 APInt B(64, X.second); 2868 (void)A.umul_ov(B, Overflow); 2869 EXPECT_FALSE(Overflow); 2870 } 2871 2872 for (unsigned Bits = 1; Bits <= 5; ++Bits) 2873 for (unsigned A = 0; A != 1u << Bits; ++A) 2874 for (unsigned B = 0; B != 1u << Bits; ++B) { 2875 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 2876 APInt Narrow = N1.umul_ov(N2, Overflow); 2877 APInt Wide = N1.zext(2 * Bits) * N2.zext(2 * Bits); 2878 EXPECT_EQ(Wide.trunc(Bits), Narrow); 2879 EXPECT_EQ(Narrow.zext(2 * Bits) != Wide, Overflow); 2880 } 2881 } 2882 2883 TEST(APIntTest, smul_ov) { 2884 for (unsigned Bits = 1; Bits <= 5; ++Bits) 2885 for (unsigned A = 0; A != 1u << Bits; ++A) 2886 for (unsigned B = 0; B != 1u << Bits; ++B) { 2887 bool Overflow; 2888 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 2889 APInt Narrow = N1.smul_ov(N2, Overflow); 2890 APInt Wide = N1.sext(2 * Bits) * N2.sext(2 * Bits); 2891 EXPECT_EQ(Wide.trunc(Bits), Narrow); 2892 EXPECT_EQ(Narrow.sext(2 * Bits) != Wide, Overflow); 2893 } 2894 } 2895 2896 TEST(APIntTest, SolveQuadraticEquationWrap) { 2897 // Verify that "Solution" is the first non-negative integer that solves 2898 // Ax^2 + Bx + C = "0 or overflow", i.e. that it is a correct solution 2899 // as calculated by SolveQuadraticEquationWrap. 2900 auto Validate = [] (int A, int B, int C, unsigned Width, int Solution) { 2901 int Mask = (1 << Width) - 1; 2902 2903 // Solution should be non-negative. 2904 EXPECT_GE(Solution, 0); 2905 2906 auto OverflowBits = [] (int64_t V, unsigned W) { 2907 return V & -(1 << W); 2908 }; 2909 2910 int64_t Over0 = OverflowBits(C, Width); 2911 2912 auto IsZeroOrOverflow = [&] (int X) { 2913 int64_t ValueAtX = A*X*X + B*X + C; 2914 int64_t OverX = OverflowBits(ValueAtX, Width); 2915 return (ValueAtX & Mask) == 0 || OverX != Over0; 2916 }; 2917 2918 auto EquationToString = [&] (const char *X_str) { 2919 return (Twine(A) + Twine(X_str) + Twine("^2 + ") + Twine(B) + 2920 Twine(X_str) + Twine(" + ") + Twine(C) + Twine(", bitwidth: ") + 2921 Twine(Width)).str(); 2922 }; 2923 2924 auto IsSolution = [&] (const char *X_str, int X) { 2925 if (IsZeroOrOverflow(X)) 2926 return ::testing::AssertionSuccess() 2927 << X << " is a solution of " << EquationToString(X_str); 2928 return ::testing::AssertionFailure() 2929 << X << " is not an expected solution of " 2930 << EquationToString(X_str); 2931 }; 2932 2933 auto IsNotSolution = [&] (const char *X_str, int X) { 2934 if (!IsZeroOrOverflow(X)) 2935 return ::testing::AssertionSuccess() 2936 << X << " is not a solution of " << EquationToString(X_str); 2937 return ::testing::AssertionFailure() 2938 << X << " is an unexpected solution of " 2939 << EquationToString(X_str); 2940 }; 2941 2942 // This is the important part: make sure that there is no solution that 2943 // is less than the calculated one. 2944 if (Solution > 0) { 2945 for (int X = 1; X < Solution-1; ++X) 2946 EXPECT_PRED_FORMAT1(IsNotSolution, X); 2947 } 2948 2949 // Verify that the calculated solution is indeed a solution. 2950 EXPECT_PRED_FORMAT1(IsSolution, Solution); 2951 }; 2952 2953 // Generate all possible quadratic equations with Width-bit wide integer 2954 // coefficients, get the solution from SolveQuadraticEquationWrap, and 2955 // verify that the solution is correct. 2956 auto Iterate = [&] (unsigned Width) { 2957 assert(1 < Width && Width < 32); 2958 int Low = -(1 << (Width-1)); 2959 int High = (1 << (Width-1)); 2960 2961 for (int A = Low; A != High; ++A) { 2962 if (A == 0) 2963 continue; 2964 for (int B = Low; B != High; ++B) { 2965 for (int C = Low; C != High; ++C) { 2966 std::optional<APInt> S = APIntOps::SolveQuadraticEquationWrap( 2967 APInt(Width, A), APInt(Width, B), APInt(Width, C), Width); 2968 if (S) 2969 Validate(A, B, C, Width, S->getSExtValue()); 2970 } 2971 } 2972 } 2973 }; 2974 2975 // Test all widths in [2..6]. 2976 for (unsigned i = 2; i <= 6; ++i) 2977 Iterate(i); 2978 } 2979 2980 TEST(APIntTest, MultiplicativeInverseExaustive) { 2981 for (unsigned BitWidth = 1; BitWidth <= 16; ++BitWidth) { 2982 for (unsigned Value = 0; Value < (1u << BitWidth); ++Value) { 2983 APInt V = APInt(BitWidth, Value); 2984 APInt MulInv = 2985 V.zext(BitWidth + 1) 2986 .multiplicativeInverse(APInt::getSignedMinValue(BitWidth + 1)) 2987 .trunc(BitWidth); 2988 APInt One = V * MulInv; 2989 if (!V.isZero() && V.countr_zero() == 0) { 2990 // Multiplicative inverse exists for all odd numbers. 2991 EXPECT_TRUE(One.isOne()); 2992 } else { 2993 // Multiplicative inverse does not exist for even numbers (and 0). 2994 EXPECT_TRUE(MulInv.isZero()); 2995 } 2996 } 2997 } 2998 } 2999 3000 TEST(APIntTest, GetMostSignificantDifferentBit) { 3001 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 0)), 3002 std::nullopt); 3003 EXPECT_EQ( 3004 APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 42)), 3005 std::nullopt); 3006 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 1)), 3007 0u); 3008 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 2)), 3009 1u); 3010 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 3)), 3011 1u); 3012 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 0)), 3013 0u); 3014 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 1)), 3015 std::nullopt); 3016 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 2)), 3017 1u); 3018 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 3)), 3019 1u); 3020 EXPECT_EQ( 3021 *APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 112)), 3022 6u); 3023 } 3024 3025 TEST(APIntTest, GetMostSignificantDifferentBitExaustive) { 3026 auto GetHighestDifferentBitBruteforce = 3027 [](const APInt &V0, const APInt &V1) -> std::optional<unsigned> { 3028 assert(V0.getBitWidth() == V1.getBitWidth() && "Must have same bitwidth"); 3029 if (V0 == V1) 3030 return std::nullopt; // Bitwise identical. 3031 // There is a mismatch. Let's find the most significant different bit. 3032 for (int Bit = V0.getBitWidth() - 1; Bit >= 0; --Bit) { 3033 if (V0[Bit] == V1[Bit]) 3034 continue; 3035 return Bit; 3036 } 3037 llvm_unreachable("Must have found bit mismatch."); 3038 }; 3039 3040 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) { 3041 for (unsigned V0 = 0; V0 < (1u << BitWidth); ++V0) { 3042 for (unsigned V1 = 0; V1 < (1u << BitWidth); ++V1) { 3043 APInt A = APInt(BitWidth, V0); 3044 APInt B = APInt(BitWidth, V1); 3045 3046 auto Bit = APIntOps::GetMostSignificantDifferentBit(A, B); 3047 EXPECT_EQ(Bit, GetHighestDifferentBitBruteforce(A, B)); 3048 3049 if (!Bit) 3050 EXPECT_EQ(A, B); 3051 else { 3052 EXPECT_NE(A, B); 3053 for (unsigned NumLowBits = 0; NumLowBits <= BitWidth; ++NumLowBits) { 3054 APInt Adash = A; 3055 Adash.clearLowBits(NumLowBits); 3056 APInt Bdash = B; 3057 Bdash.clearLowBits(NumLowBits); 3058 // Clearing only low bits up to and including *Bit is sufficient 3059 // to make values equal. 3060 if (NumLowBits >= 1 + *Bit) 3061 EXPECT_EQ(Adash, Bdash); 3062 else 3063 EXPECT_NE(Adash, Bdash); 3064 } 3065 } 3066 } 3067 } 3068 } 3069 } 3070 3071 TEST(APIntTest, SignbitZeroChecks) { 3072 EXPECT_TRUE(APInt(8, -1).isNegative()); 3073 EXPECT_FALSE(APInt(8, -1).isNonNegative()); 3074 EXPECT_FALSE(APInt(8, -1).isStrictlyPositive()); 3075 EXPECT_TRUE(APInt(8, -1).isNonPositive()); 3076 3077 EXPECT_FALSE(APInt(8, 0).isNegative()); 3078 EXPECT_TRUE(APInt(8, 0).isNonNegative()); 3079 EXPECT_FALSE(APInt(8, 0).isStrictlyPositive()); 3080 EXPECT_TRUE(APInt(8, 0).isNonPositive()); 3081 3082 EXPECT_FALSE(APInt(8, 1).isNegative()); 3083 EXPECT_TRUE(APInt(8, 1).isNonNegative()); 3084 EXPECT_TRUE(APInt(8, 1).isStrictlyPositive()); 3085 EXPECT_FALSE(APInt(8, 1).isNonPositive()); 3086 } 3087 3088 TEST(APIntTest, ZeroWidth) { 3089 // Zero width Constructors. 3090 auto ZW = APInt::getZeroWidth(); 3091 EXPECT_EQ(0U, ZW.getBitWidth()); 3092 EXPECT_EQ(0U, APInt(0, ArrayRef<uint64_t>({0, 1, 2})).getBitWidth()); 3093 EXPECT_EQ(0U, APInt(0, "0", 10).getBitWidth()); 3094 3095 // Default constructor is single bit wide. 3096 EXPECT_EQ(1U, APInt().getBitWidth()); 3097 3098 // Copy ctor (move is down below). 3099 APInt ZW2(ZW); 3100 EXPECT_EQ(0U, ZW2.getBitWidth()); 3101 // Assignment 3102 ZW = ZW2; 3103 EXPECT_EQ(0U, ZW.getBitWidth()); 3104 3105 // Methods like getLowBitsSet work with zero bits. 3106 EXPECT_EQ(0U, APInt::getLowBitsSet(0, 0).getBitWidth()); 3107 EXPECT_EQ(0U, APInt::getSplat(0, ZW).getBitWidth()); 3108 EXPECT_EQ(0U, APInt(4, 10).extractBits(0, 2).getBitWidth()); 3109 EXPECT_EQ(0U, APInt(4, 10).extractBitsAsZExtValue(0, 2)); 3110 3111 // Logical operators. 3112 ZW |= ZW2; 3113 ZW &= ZW2; 3114 ZW ^= ZW2; 3115 ZW |= 42; // These ignore high bits of the literal. 3116 ZW &= 42; 3117 ZW ^= 42; 3118 EXPECT_EQ(1, ZW.isIntN(0)); 3119 3120 // Modulo Arithmetic. Divide/Rem aren't defined on division by zero, so they 3121 // aren't supported. 3122 ZW += ZW2; 3123 ZW -= ZW2; 3124 ZW *= ZW2; 3125 3126 // Logical Shifts and rotates, the amount must be <= bitwidth. 3127 ZW <<= 0; 3128 ZW.lshrInPlace(0); 3129 (void)ZW.rotl(0); 3130 (void)ZW.rotr(0); 3131 3132 // Comparisons. 3133 EXPECT_EQ(1, ZW == ZW); 3134 EXPECT_EQ(0, ZW != ZW); 3135 EXPECT_EQ(0, ZW.ult(ZW)); 3136 3137 // Mutations. 3138 ZW.setBitsWithWrap(0, 0); 3139 ZW.setBits(0, 0); 3140 ZW.clearAllBits(); 3141 ZW.flipAllBits(); 3142 3143 // Leading, trailing, ctpop, etc 3144 EXPECT_EQ(0U, ZW.countl_zero()); 3145 EXPECT_EQ(0U, ZW.countl_one()); 3146 EXPECT_EQ(0U, ZW.popcount()); 3147 EXPECT_EQ(0U, ZW.reverseBits().getBitWidth()); 3148 EXPECT_EQ(0U, ZW.getHiBits(0).getBitWidth()); 3149 EXPECT_EQ(0U, ZW.getLoBits(0).getBitWidth()); 3150 EXPECT_EQ(0, ZW.zext(4)); 3151 EXPECT_EQ(0U, APInt(4, 3).trunc(0).getBitWidth()); 3152 EXPECT_TRUE(ZW.isAllOnes()); 3153 3154 // Zero extension. 3155 EXPECT_EQ(0U, ZW.getZExtValue()); 3156 3157 SmallString<42> STR; 3158 ZW.toStringUnsigned(STR); 3159 EXPECT_EQ("0", STR); 3160 3161 // Move ctor (keep at the end of the method since moves are destructive). 3162 APInt MZW1(std::move(ZW)); 3163 EXPECT_EQ(0U, MZW1.getBitWidth()); 3164 // Move Assignment 3165 MZW1 = std::move(ZW2); 3166 EXPECT_EQ(0U, MZW1.getBitWidth()); 3167 } 3168 3169 TEST(APIntTest, ScaleBitMask) { 3170 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8), APInt(8, 0x00)); 3171 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8), APInt(8, 0x0F)); 3172 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8), APInt(8, 0xF0)); 3173 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8), APInt(8, 0xFF)); 3174 3175 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4), APInt(4, 0x00)); 3176 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4), APInt(4, 0x0F)); 3177 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4), APInt(4, 0x0E)); 3178 3179 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 8), APInt(8, 0x00)); 3180 3181 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getZero(1024), 4096), 3182 APInt::getZero(4096)); 3183 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getAllOnes(4096), 256), 3184 APInt::getAllOnes(256)); 3185 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getOneBitSet(4096, 32), 256), 3186 APInt::getOneBitSet(256, 2)); 3187 3188 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8, true), APInt(8, 0x00)); 3189 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8, true), APInt(8, 0x0F)); 3190 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8, true), APInt(8, 0xF0)); 3191 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8, true), APInt(8, 0xFF)); 3192 3193 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4, true), APInt(4, 0x00)); 3194 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4, true), APInt(4, 0x0F)); 3195 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4, true), APInt(4, 0x08)); 3196 } 3197 3198 TEST(APIntTest, DenseMap) { 3199 DenseMap<APInt, int> Map; 3200 APInt ZeroWidthInt(0, 0, false); 3201 Map.insert({ZeroWidthInt, 0}); 3202 Map.find(ZeroWidthInt); 3203 } 3204 3205 TEST(APIntTest, TryExt) { 3206 APInt small(32, 42); 3207 APInt large(128, {0xffff, 0xffff}); 3208 ASSERT_TRUE(small.tryZExtValue().has_value()); 3209 ASSERT_TRUE(small.trySExtValue().has_value()); 3210 ASSERT_FALSE(large.tryZExtValue().has_value()); 3211 ASSERT_FALSE(large.trySExtValue().has_value()); 3212 ASSERT_EQ(small.trySExtValue().value_or(41), 42); 3213 ASSERT_EQ(large.trySExtValue().value_or(41), 41); 3214 3215 APInt negOne32(32, 0); 3216 negOne32.setAllBits(); 3217 ASSERT_EQ(negOne32.trySExtValue().value_or(42), -1); 3218 APInt negOne64(64, 0); 3219 negOne64.setAllBits(); 3220 ASSERT_EQ(negOne64.trySExtValue().value_or(42), -1); 3221 APInt negOne128(128, 0); 3222 negOne128.setAllBits(); 3223 ASSERT_EQ(negOne128.trySExtValue().value_or(42), -1); 3224 ASSERT_EQ(42, APInt(128, -1).trySExtValue().value_or(42)); 3225 } 3226 3227 } // end anonymous namespace 3228