1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ADT/APInt.h" 10 #include "llvm/ADT/ArrayRef.h" 11 #include "llvm/ADT/DenseMap.h" 12 #include "llvm/ADT/SmallString.h" 13 #include "llvm/ADT/Twine.h" 14 #include "gtest/gtest.h" 15 #include <array> 16 #include <optional> 17 18 using namespace llvm; 19 20 namespace { 21 22 TEST(APIntTest, ValueInit) { 23 APInt Zero = APInt(); 24 EXPECT_TRUE(!Zero); 25 EXPECT_TRUE(!Zero.zext(64)); 26 EXPECT_TRUE(!Zero.sext(64)); 27 } 28 29 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 30 TEST(APIntTest, ShiftLeftByZero) { 31 APInt One = APInt::getZero(65) + 1; 32 APInt Shl = One.shl(0); 33 EXPECT_TRUE(Shl[0]); 34 EXPECT_FALSE(Shl[1]); 35 } 36 37 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 38 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 39 EXPECT_EQ(neg_one, neg_one.ashr(7)); 40 } 41 42 TEST(APIntTest, i128_NegativeCount) { 43 APInt Minus3(128, static_cast<uint64_t>(-3), true); 44 EXPECT_EQ(126u, Minus3.countl_one()); 45 EXPECT_EQ(-3, Minus3.getSExtValue()); 46 47 APInt Minus1(128, static_cast<uint64_t>(-1), true); 48 EXPECT_EQ(0u, Minus1.countl_zero()); 49 EXPECT_EQ(128u, Minus1.countl_one()); 50 EXPECT_EQ(128u, Minus1.getActiveBits()); 51 EXPECT_EQ(0u, Minus1.countr_zero()); 52 EXPECT_EQ(128u, Minus1.countr_one()); 53 EXPECT_EQ(128u, Minus1.popcount()); 54 EXPECT_EQ(-1, Minus1.getSExtValue()); 55 } 56 57 TEST(APIntTest, i33_Count) { 58 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 59 EXPECT_EQ(0u, i33minus2.countl_zero()); 60 EXPECT_EQ(32u, i33minus2.countl_one()); 61 EXPECT_EQ(33u, i33minus2.getActiveBits()); 62 EXPECT_EQ(1u, i33minus2.countr_zero()); 63 EXPECT_EQ(32u, i33minus2.popcount()); 64 EXPECT_EQ(-2, i33minus2.getSExtValue()); 65 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 66 } 67 68 TEST(APIntTest, i61_Count) { 69 APInt i61(61, 1 << 15); 70 EXPECT_EQ(45u, i61.countl_zero()); 71 EXPECT_EQ(0u, i61.countl_one()); 72 EXPECT_EQ(16u, i61.getActiveBits()); 73 EXPECT_EQ(15u, i61.countr_zero()); 74 EXPECT_EQ(1u, i61.popcount()); 75 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue()); 76 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue()); 77 78 i61.setBits(8, 19); 79 EXPECT_EQ(42u, i61.countl_zero()); 80 EXPECT_EQ(0u, i61.countl_one()); 81 EXPECT_EQ(19u, i61.getActiveBits()); 82 EXPECT_EQ(8u, i61.countr_zero()); 83 EXPECT_EQ(11u, i61.popcount()); 84 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue()); 85 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue()); 86 } 87 88 TEST(APIntTest, i65_Count) { 89 APInt i65(65, 0, true); 90 EXPECT_EQ(65u, i65.countl_zero()); 91 EXPECT_EQ(0u, i65.countl_one()); 92 EXPECT_EQ(0u, i65.getActiveBits()); 93 EXPECT_EQ(1u, i65.getActiveWords()); 94 EXPECT_EQ(65u, i65.countr_zero()); 95 EXPECT_EQ(0u, i65.popcount()); 96 97 APInt i65minus(65, 0, true); 98 i65minus.setBit(64); 99 EXPECT_EQ(0u, i65minus.countl_zero()); 100 EXPECT_EQ(1u, i65minus.countl_one()); 101 EXPECT_EQ(65u, i65minus.getActiveBits()); 102 EXPECT_EQ(64u, i65minus.countr_zero()); 103 EXPECT_EQ(1u, i65minus.popcount()); 104 } 105 106 TEST(APIntTest, i128_PositiveCount) { 107 APInt u128max = APInt::getAllOnes(128); 108 EXPECT_EQ(128u, u128max.countl_one()); 109 EXPECT_EQ(0u, u128max.countl_zero()); 110 EXPECT_EQ(128u, u128max.getActiveBits()); 111 EXPECT_EQ(0u, u128max.countr_zero()); 112 EXPECT_EQ(128u, u128max.countr_one()); 113 EXPECT_EQ(128u, u128max.popcount()); 114 115 APInt u64max(128, static_cast<uint64_t>(-1), false); 116 EXPECT_EQ(64u, u64max.countl_zero()); 117 EXPECT_EQ(0u, u64max.countl_one()); 118 EXPECT_EQ(64u, u64max.getActiveBits()); 119 EXPECT_EQ(0u, u64max.countr_zero()); 120 EXPECT_EQ(64u, u64max.countr_one()); 121 EXPECT_EQ(64u, u64max.popcount()); 122 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 123 124 APInt zero(128, 0, true); 125 EXPECT_EQ(128u, zero.countl_zero()); 126 EXPECT_EQ(0u, zero.countl_one()); 127 EXPECT_EQ(0u, zero.getActiveBits()); 128 EXPECT_EQ(128u, zero.countr_zero()); 129 EXPECT_EQ(0u, zero.countr_one()); 130 EXPECT_EQ(0u, zero.popcount()); 131 EXPECT_EQ(0u, zero.getSExtValue()); 132 EXPECT_EQ(0u, zero.getZExtValue()); 133 134 APInt one(128, 1, true); 135 EXPECT_EQ(127u, one.countl_zero()); 136 EXPECT_EQ(0u, one.countl_one()); 137 EXPECT_EQ(1u, one.getActiveBits()); 138 EXPECT_EQ(0u, one.countr_zero()); 139 EXPECT_EQ(1u, one.countr_one()); 140 EXPECT_EQ(1u, one.popcount()); 141 EXPECT_EQ(1, one.getSExtValue()); 142 EXPECT_EQ(1u, one.getZExtValue()); 143 144 APInt s128(128, 2, true); 145 EXPECT_EQ(126u, s128.countl_zero()); 146 EXPECT_EQ(0u, s128.countl_one()); 147 EXPECT_EQ(2u, s128.getActiveBits()); 148 EXPECT_EQ(1u, s128.countr_zero()); 149 EXPECT_EQ(0u, s128.countr_one()); 150 EXPECT_EQ(1u, s128.popcount()); 151 EXPECT_EQ(2, s128.getSExtValue()); 152 EXPECT_EQ(2u, s128.getZExtValue()); 153 154 // NOP Test 155 s128.setBits(42, 42); 156 EXPECT_EQ(126u, s128.countl_zero()); 157 EXPECT_EQ(0u, s128.countl_one()); 158 EXPECT_EQ(2u, s128.getActiveBits()); 159 EXPECT_EQ(1u, s128.countr_zero()); 160 EXPECT_EQ(0u, s128.countr_one()); 161 EXPECT_EQ(1u, s128.popcount()); 162 EXPECT_EQ(2, s128.getSExtValue()); 163 EXPECT_EQ(2u, s128.getZExtValue()); 164 165 s128.setBits(3, 32); 166 EXPECT_EQ(96u, s128.countl_zero()); 167 EXPECT_EQ(0u, s128.countl_one()); 168 EXPECT_EQ(32u, s128.getActiveBits()); 169 EXPECT_EQ(33u, s128.getSignificantBits()); 170 EXPECT_EQ(1u, s128.countr_zero()); 171 EXPECT_EQ(0u, s128.countr_one()); 172 EXPECT_EQ(30u, s128.popcount()); 173 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 174 175 s128.setBits(62, 128); 176 EXPECT_EQ(0u, s128.countl_zero()); 177 EXPECT_EQ(66u, s128.countl_one()); 178 EXPECT_EQ(128u, s128.getActiveBits()); 179 EXPECT_EQ(63u, s128.getSignificantBits()); 180 EXPECT_EQ(1u, s128.countr_zero()); 181 EXPECT_EQ(0u, s128.countr_one()); 182 EXPECT_EQ(96u, s128.popcount()); 183 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 184 static_cast<uint32_t>((~0u << 3) | 2)), 185 s128.getSExtValue()); 186 } 187 188 TEST(APIntTest, i256) { 189 APInt s256(256, 15, true); 190 EXPECT_EQ(252u, s256.countl_zero()); 191 EXPECT_EQ(0u, s256.countl_one()); 192 EXPECT_EQ(4u, s256.getActiveBits()); 193 EXPECT_EQ(0u, s256.countr_zero()); 194 EXPECT_EQ(4u, s256.countr_one()); 195 EXPECT_EQ(4u, s256.popcount()); 196 EXPECT_EQ(15, s256.getSExtValue()); 197 EXPECT_EQ(15u, s256.getZExtValue()); 198 199 s256.setBits(62, 66); 200 EXPECT_EQ(190u, s256.countl_zero()); 201 EXPECT_EQ(0u, s256.countl_one()); 202 EXPECT_EQ(66u, s256.getActiveBits()); 203 EXPECT_EQ(67u, s256.getSignificantBits()); 204 EXPECT_EQ(0u, s256.countr_zero()); 205 EXPECT_EQ(4u, s256.countr_one()); 206 EXPECT_EQ(8u, s256.popcount()); 207 208 s256.setBits(60, 256); 209 EXPECT_EQ(0u, s256.countl_zero()); 210 EXPECT_EQ(196u, s256.countl_one()); 211 EXPECT_EQ(256u, s256.getActiveBits()); 212 EXPECT_EQ(61u, s256.getSignificantBits()); 213 EXPECT_EQ(0u, s256.countr_zero()); 214 EXPECT_EQ(4u, s256.countr_one()); 215 EXPECT_EQ(200u, s256.popcount()); 216 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 217 } 218 219 TEST(APIntTest, i1) { 220 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 221 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 222 const APInt zero(1, 0); 223 const APInt one(1, 1); 224 const APInt two(1, 2); 225 226 EXPECT_EQ(0, neg_two.getSExtValue()); 227 EXPECT_EQ(-1, neg_one.getSExtValue()); 228 EXPECT_EQ(1u, neg_one.getZExtValue()); 229 EXPECT_EQ(0u, zero.getZExtValue()); 230 EXPECT_EQ(-1, one.getSExtValue()); 231 EXPECT_EQ(1u, one.getZExtValue()); 232 EXPECT_EQ(0u, two.getZExtValue()); 233 EXPECT_EQ(0, two.getSExtValue()); 234 235 // Basic equalities for 1-bit values. 236 EXPECT_EQ(zero, two); 237 EXPECT_EQ(zero, neg_two); 238 EXPECT_EQ(one, neg_one); 239 EXPECT_EQ(two, neg_two); 240 241 // Min/max signed values. 242 EXPECT_TRUE(zero.isMaxSignedValue()); 243 EXPECT_FALSE(one.isMaxSignedValue()); 244 EXPECT_FALSE(zero.isMinSignedValue()); 245 EXPECT_TRUE(one.isMinSignedValue()); 246 247 // Additions. 248 EXPECT_EQ(two, one + one); 249 EXPECT_EQ(zero, neg_one + one); 250 EXPECT_EQ(neg_two, neg_one + neg_one); 251 252 // Subtractions. 253 EXPECT_EQ(neg_two, neg_one - one); 254 EXPECT_EQ(two, one - neg_one); 255 EXPECT_EQ(zero, one - one); 256 257 // And 258 EXPECT_EQ(zero, zero & zero); 259 EXPECT_EQ(zero, one & zero); 260 EXPECT_EQ(zero, zero & one); 261 EXPECT_EQ(one, one & one); 262 EXPECT_EQ(zero, zero & zero); 263 EXPECT_EQ(zero, neg_one & zero); 264 EXPECT_EQ(zero, zero & neg_one); 265 EXPECT_EQ(neg_one, neg_one & neg_one); 266 267 // Or 268 EXPECT_EQ(zero, zero | zero); 269 EXPECT_EQ(one, one | zero); 270 EXPECT_EQ(one, zero | one); 271 EXPECT_EQ(one, one | one); 272 EXPECT_EQ(zero, zero | zero); 273 EXPECT_EQ(neg_one, neg_one | zero); 274 EXPECT_EQ(neg_one, zero | neg_one); 275 EXPECT_EQ(neg_one, neg_one | neg_one); 276 277 // Xor 278 EXPECT_EQ(zero, zero ^ zero); 279 EXPECT_EQ(one, one ^ zero); 280 EXPECT_EQ(one, zero ^ one); 281 EXPECT_EQ(zero, one ^ one); 282 EXPECT_EQ(zero, zero ^ zero); 283 EXPECT_EQ(neg_one, neg_one ^ zero); 284 EXPECT_EQ(neg_one, zero ^ neg_one); 285 EXPECT_EQ(zero, neg_one ^ neg_one); 286 287 // Shifts. 288 EXPECT_EQ(zero, one << one); 289 EXPECT_EQ(one, one << zero); 290 EXPECT_EQ(zero, one.shl(1)); 291 EXPECT_EQ(one, one.shl(0)); 292 EXPECT_EQ(zero, one.lshr(1)); 293 EXPECT_EQ(one, one.ashr(1)); 294 295 // Rotates. 296 EXPECT_EQ(one, one.rotl(0)); 297 EXPECT_EQ(one, one.rotl(1)); 298 EXPECT_EQ(one, one.rotr(0)); 299 EXPECT_EQ(one, one.rotr(1)); 300 301 // Multiplies. 302 EXPECT_EQ(neg_one, neg_one * one); 303 EXPECT_EQ(neg_one, one * neg_one); 304 EXPECT_EQ(one, neg_one * neg_one); 305 EXPECT_EQ(one, one * one); 306 307 // Divides. 308 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 309 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 310 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 311 EXPECT_EQ(one, one.sdiv(one)); 312 313 EXPECT_EQ(neg_one, one.udiv(neg_one)); 314 EXPECT_EQ(neg_one, neg_one.udiv(one)); 315 EXPECT_EQ(one, neg_one.udiv(neg_one)); 316 EXPECT_EQ(one, one.udiv(one)); 317 318 // Remainders. 319 EXPECT_EQ(zero, neg_one.srem(one)); 320 EXPECT_EQ(zero, neg_one.urem(one)); 321 EXPECT_EQ(zero, one.srem(neg_one)); 322 323 // sdivrem 324 { 325 APInt q(8, 0); 326 APInt r(8, 0); 327 APInt one(8, 1); 328 APInt two(8, 2); 329 APInt nine(8, 9); 330 APInt four(8, 4); 331 332 EXPECT_EQ(nine.srem(two), one); 333 EXPECT_EQ(nine.srem(-two), one); 334 EXPECT_EQ((-nine).srem(two), -one); 335 EXPECT_EQ((-nine).srem(-two), -one); 336 337 APInt::sdivrem(nine, two, q, r); 338 EXPECT_EQ(four, q); 339 EXPECT_EQ(one, r); 340 APInt::sdivrem(-nine, two, q, r); 341 EXPECT_EQ(-four, q); 342 EXPECT_EQ(-one, r); 343 APInt::sdivrem(nine, -two, q, r); 344 EXPECT_EQ(-four, q); 345 EXPECT_EQ(one, r); 346 APInt::sdivrem(-nine, -two, q, r); 347 EXPECT_EQ(four, q); 348 EXPECT_EQ(-one, r); 349 } 350 } 351 352 TEST(APIntTest, compare) { 353 std::array<APInt, 5> testVals{{ 354 APInt{16, 2}, 355 APInt{16, 1}, 356 APInt{16, 0}, 357 APInt{16, (uint64_t)-1, true}, 358 APInt{16, (uint64_t)-2, true}, 359 }}; 360 361 for (auto &arg1 : testVals) 362 for (auto &arg2 : testVals) { 363 auto uv1 = arg1.getZExtValue(); 364 auto uv2 = arg2.getZExtValue(); 365 auto sv1 = arg1.getSExtValue(); 366 auto sv2 = arg2.getSExtValue(); 367 368 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 369 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 370 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 371 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 372 373 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 374 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 375 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 376 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 377 378 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 379 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 380 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 381 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 382 383 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 384 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 385 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 386 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 387 } 388 } 389 390 TEST(APIntTest, compareWithRawIntegers) { 391 EXPECT_TRUE(!APInt(8, 1).uge(256)); 392 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 393 EXPECT_TRUE( APInt(8, 1).ule(256)); 394 EXPECT_TRUE( APInt(8, 1).ult(256)); 395 EXPECT_TRUE(!APInt(8, 1).sge(256)); 396 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 397 EXPECT_TRUE( APInt(8, 1).sle(256)); 398 EXPECT_TRUE( APInt(8, 1).slt(256)); 399 EXPECT_TRUE(!(APInt(8, 0) == 256)); 400 EXPECT_TRUE( APInt(8, 0) != 256); 401 EXPECT_TRUE(!(APInt(8, 1) == 256)); 402 EXPECT_TRUE( APInt(8, 1) != 256); 403 404 auto uint64max = UINT64_MAX; 405 auto int64max = INT64_MAX; 406 auto int64min = INT64_MIN; 407 408 auto u64 = APInt{128, uint64max}; 409 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 410 auto big = u64 + 1; 411 412 EXPECT_TRUE( u64.uge(uint64max)); 413 EXPECT_TRUE(!u64.ugt(uint64max)); 414 EXPECT_TRUE( u64.ule(uint64max)); 415 EXPECT_TRUE(!u64.ult(uint64max)); 416 EXPECT_TRUE( u64.sge(int64max)); 417 EXPECT_TRUE( u64.sgt(int64max)); 418 EXPECT_TRUE(!u64.sle(int64max)); 419 EXPECT_TRUE(!u64.slt(int64max)); 420 EXPECT_TRUE( u64.sge(int64min)); 421 EXPECT_TRUE( u64.sgt(int64min)); 422 EXPECT_TRUE(!u64.sle(int64min)); 423 EXPECT_TRUE(!u64.slt(int64min)); 424 425 EXPECT_TRUE(u64 == uint64max); 426 EXPECT_TRUE(u64 != int64max); 427 EXPECT_TRUE(u64 != int64min); 428 429 EXPECT_TRUE(!s64.uge(uint64max)); 430 EXPECT_TRUE(!s64.ugt(uint64max)); 431 EXPECT_TRUE( s64.ule(uint64max)); 432 EXPECT_TRUE( s64.ult(uint64max)); 433 EXPECT_TRUE( s64.sge(int64max)); 434 EXPECT_TRUE(!s64.sgt(int64max)); 435 EXPECT_TRUE( s64.sle(int64max)); 436 EXPECT_TRUE(!s64.slt(int64max)); 437 EXPECT_TRUE( s64.sge(int64min)); 438 EXPECT_TRUE( s64.sgt(int64min)); 439 EXPECT_TRUE(!s64.sle(int64min)); 440 EXPECT_TRUE(!s64.slt(int64min)); 441 442 EXPECT_TRUE(s64 != uint64max); 443 EXPECT_TRUE(s64 == int64max); 444 EXPECT_TRUE(s64 != int64min); 445 446 EXPECT_TRUE( big.uge(uint64max)); 447 EXPECT_TRUE( big.ugt(uint64max)); 448 EXPECT_TRUE(!big.ule(uint64max)); 449 EXPECT_TRUE(!big.ult(uint64max)); 450 EXPECT_TRUE( big.sge(int64max)); 451 EXPECT_TRUE( big.sgt(int64max)); 452 EXPECT_TRUE(!big.sle(int64max)); 453 EXPECT_TRUE(!big.slt(int64max)); 454 EXPECT_TRUE( big.sge(int64min)); 455 EXPECT_TRUE( big.sgt(int64min)); 456 EXPECT_TRUE(!big.sle(int64min)); 457 EXPECT_TRUE(!big.slt(int64min)); 458 459 EXPECT_TRUE(big != uint64max); 460 EXPECT_TRUE(big != int64max); 461 EXPECT_TRUE(big != int64min); 462 } 463 464 TEST(APIntTest, compareWithInt64Min) { 465 int64_t edge = INT64_MIN; 466 int64_t edgeP1 = edge + 1; 467 int64_t edgeM1 = INT64_MAX; 468 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 469 470 EXPECT_TRUE(!a.slt(edge)); 471 EXPECT_TRUE( a.sle(edge)); 472 EXPECT_TRUE(!a.sgt(edge)); 473 EXPECT_TRUE( a.sge(edge)); 474 EXPECT_TRUE( a.slt(edgeP1)); 475 EXPECT_TRUE( a.sle(edgeP1)); 476 EXPECT_TRUE(!a.sgt(edgeP1)); 477 EXPECT_TRUE(!a.sge(edgeP1)); 478 EXPECT_TRUE( a.slt(edgeM1)); 479 EXPECT_TRUE( a.sle(edgeM1)); 480 EXPECT_TRUE(!a.sgt(edgeM1)); 481 EXPECT_TRUE(!a.sge(edgeM1)); 482 } 483 484 TEST(APIntTest, compareWithHalfInt64Max) { 485 uint64_t edge = 0x4000000000000000; 486 uint64_t edgeP1 = edge + 1; 487 uint64_t edgeM1 = edge - 1; 488 auto a = APInt{64, edge}; 489 490 EXPECT_TRUE(!a.ult(edge)); 491 EXPECT_TRUE( a.ule(edge)); 492 EXPECT_TRUE(!a.ugt(edge)); 493 EXPECT_TRUE( a.uge(edge)); 494 EXPECT_TRUE( a.ult(edgeP1)); 495 EXPECT_TRUE( a.ule(edgeP1)); 496 EXPECT_TRUE(!a.ugt(edgeP1)); 497 EXPECT_TRUE(!a.uge(edgeP1)); 498 EXPECT_TRUE(!a.ult(edgeM1)); 499 EXPECT_TRUE(!a.ule(edgeM1)); 500 EXPECT_TRUE( a.ugt(edgeM1)); 501 EXPECT_TRUE( a.uge(edgeM1)); 502 503 EXPECT_TRUE(!a.slt(edge)); 504 EXPECT_TRUE( a.sle(edge)); 505 EXPECT_TRUE(!a.sgt(edge)); 506 EXPECT_TRUE( a.sge(edge)); 507 EXPECT_TRUE( a.slt(edgeP1)); 508 EXPECT_TRUE( a.sle(edgeP1)); 509 EXPECT_TRUE(!a.sgt(edgeP1)); 510 EXPECT_TRUE(!a.sge(edgeP1)); 511 EXPECT_TRUE(!a.slt(edgeM1)); 512 EXPECT_TRUE(!a.sle(edgeM1)); 513 EXPECT_TRUE( a.sgt(edgeM1)); 514 EXPECT_TRUE( a.sge(edgeM1)); 515 } 516 517 TEST(APIntTest, compareLargeIntegers) { 518 // Make sure all the combinations of signed comparisons work with big ints. 519 auto One = APInt{128, static_cast<uint64_t>(1), true}; 520 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 521 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 522 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 523 524 EXPECT_TRUE(!One.slt(One)); 525 EXPECT_TRUE(!Two.slt(One)); 526 EXPECT_TRUE(MinusOne.slt(One)); 527 EXPECT_TRUE(MinusTwo.slt(One)); 528 529 EXPECT_TRUE(One.slt(Two)); 530 EXPECT_TRUE(!Two.slt(Two)); 531 EXPECT_TRUE(MinusOne.slt(Two)); 532 EXPECT_TRUE(MinusTwo.slt(Two)); 533 534 EXPECT_TRUE(!One.slt(MinusOne)); 535 EXPECT_TRUE(!Two.slt(MinusOne)); 536 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 537 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 538 539 EXPECT_TRUE(!One.slt(MinusTwo)); 540 EXPECT_TRUE(!Two.slt(MinusTwo)); 541 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 542 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 543 } 544 545 TEST(APIntTest, binaryOpsWithRawIntegers) { 546 // Single word check. 547 uint64_t E1 = 0x2CA7F46BF6569915ULL; 548 APInt A1(64, E1); 549 550 EXPECT_EQ(A1 & E1, E1); 551 EXPECT_EQ(A1 & 0, 0); 552 EXPECT_EQ(A1 & 1, 1); 553 EXPECT_EQ(A1 & 5, 5); 554 EXPECT_EQ(A1 & UINT64_MAX, E1); 555 556 EXPECT_EQ(A1 | E1, E1); 557 EXPECT_EQ(A1 | 0, E1); 558 EXPECT_EQ(A1 | 1, E1); 559 EXPECT_EQ(A1 | 2, E1 | 2); 560 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 561 562 EXPECT_EQ(A1 ^ E1, 0); 563 EXPECT_EQ(A1 ^ 0, E1); 564 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 565 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 566 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 567 568 // Multiword check. 569 uint64_t N = 0xEB6EB136591CBA21ULL; 570 APInt::WordType E2[4] = { 571 N, 572 0x7B9358BD6A33F10AULL, 573 0x7E7FFA5EADD8846ULL, 574 0x305F341CA00B613DULL 575 }; 576 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 577 578 EXPECT_EQ(A2 & N, N); 579 EXPECT_EQ(A2 & 0, 0); 580 EXPECT_EQ(A2 & 1, 1); 581 EXPECT_EQ(A2 & 5, 1); 582 EXPECT_EQ(A2 & UINT64_MAX, N); 583 584 EXPECT_EQ(A2 | N, A2); 585 EXPECT_EQ(A2 | 0, A2); 586 EXPECT_EQ(A2 | 1, A2); 587 EXPECT_EQ(A2 | 2, A2 + 2); 588 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 589 590 EXPECT_EQ(A2 ^ N, A2 - N); 591 EXPECT_EQ(A2 ^ 0, A2); 592 EXPECT_EQ(A2 ^ 1, A2 - 1); 593 EXPECT_EQ(A2 ^ 7, A2 + 5); 594 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 595 } 596 597 TEST(APIntTest, rvalue_arithmetic) { 598 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 599 600 // Lamdba to return an APInt by value, but also provide the raw value of the 601 // allocated data. 602 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 603 APInt V(129, HexString, 16); 604 RawData = V.getRawData(); 605 return V; 606 }; 607 608 APInt One(129, "1", 16); 609 APInt Two(129, "2", 16); 610 APInt Three(129, "3", 16); 611 APInt MinusOne = -One; 612 613 const uint64_t *RawDataL = nullptr; 614 const uint64_t *RawDataR = nullptr; 615 616 { 617 // 1 + 1 = 2 618 APInt AddLL = One + One; 619 EXPECT_EQ(AddLL, Two); 620 621 APInt AddLR = One + getRValue("1", RawDataR); 622 EXPECT_EQ(AddLR, Two); 623 EXPECT_EQ(AddLR.getRawData(), RawDataR); 624 625 APInt AddRL = getRValue("1", RawDataL) + One; 626 EXPECT_EQ(AddRL, Two); 627 EXPECT_EQ(AddRL.getRawData(), RawDataL); 628 629 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 630 EXPECT_EQ(AddRR, Two); 631 EXPECT_EQ(AddRR.getRawData(), RawDataR); 632 633 // LValue's and constants 634 APInt AddLK = One + 1; 635 EXPECT_EQ(AddLK, Two); 636 637 APInt AddKL = 1 + One; 638 EXPECT_EQ(AddKL, Two); 639 640 // RValue's and constants 641 APInt AddRK = getRValue("1", RawDataL) + 1; 642 EXPECT_EQ(AddRK, Two); 643 EXPECT_EQ(AddRK.getRawData(), RawDataL); 644 645 APInt AddKR = 1 + getRValue("1", RawDataR); 646 EXPECT_EQ(AddKR, Two); 647 EXPECT_EQ(AddKR.getRawData(), RawDataR); 648 } 649 650 { 651 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 652 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 653 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 654 655 APInt AddLL = AllOnes + Two; 656 EXPECT_EQ(AddLL, HighOneLowOne); 657 658 APInt AddLR = AllOnes + getRValue("2", RawDataR); 659 EXPECT_EQ(AddLR, HighOneLowOne); 660 EXPECT_EQ(AddLR.getRawData(), RawDataR); 661 662 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 663 EXPECT_EQ(AddRL, HighOneLowOne); 664 EXPECT_EQ(AddRL.getRawData(), RawDataL); 665 666 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 667 getRValue("2", RawDataR); 668 EXPECT_EQ(AddRR, HighOneLowOne); 669 EXPECT_EQ(AddRR.getRawData(), RawDataR); 670 671 // LValue's and constants 672 APInt AddLK = AllOnes + 2; 673 EXPECT_EQ(AddLK, HighOneLowOne); 674 675 APInt AddKL = 2 + AllOnes; 676 EXPECT_EQ(AddKL, HighOneLowOne); 677 678 // RValue's and constants 679 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 680 EXPECT_EQ(AddRK, HighOneLowOne); 681 EXPECT_EQ(AddRK.getRawData(), RawDataL); 682 683 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 684 EXPECT_EQ(AddKR, HighOneLowOne); 685 EXPECT_EQ(AddKR.getRawData(), RawDataR); 686 } 687 688 { 689 // 2 - 1 = 1 690 APInt SubLL = Two - One; 691 EXPECT_EQ(SubLL, One); 692 693 APInt SubLR = Two - getRValue("1", RawDataR); 694 EXPECT_EQ(SubLR, One); 695 EXPECT_EQ(SubLR.getRawData(), RawDataR); 696 697 APInt SubRL = getRValue("2", RawDataL) - One; 698 EXPECT_EQ(SubRL, One); 699 EXPECT_EQ(SubRL.getRawData(), RawDataL); 700 701 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 702 EXPECT_EQ(SubRR, One); 703 EXPECT_EQ(SubRR.getRawData(), RawDataR); 704 705 // LValue's and constants 706 APInt SubLK = Two - 1; 707 EXPECT_EQ(SubLK, One); 708 709 APInt SubKL = 2 - One; 710 EXPECT_EQ(SubKL, One); 711 712 // RValue's and constants 713 APInt SubRK = getRValue("2", RawDataL) - 1; 714 EXPECT_EQ(SubRK, One); 715 EXPECT_EQ(SubRK.getRawData(), RawDataL); 716 717 APInt SubKR = 2 - getRValue("1", RawDataR); 718 EXPECT_EQ(SubKR, One); 719 EXPECT_EQ(SubKR.getRawData(), RawDataR); 720 } 721 722 { 723 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 724 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 725 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 726 727 APInt SubLL = HighOneLowOne - AllOnes; 728 EXPECT_EQ(SubLL, Two); 729 730 APInt SubLR = HighOneLowOne - 731 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 732 EXPECT_EQ(SubLR, Two); 733 EXPECT_EQ(SubLR.getRawData(), RawDataR); 734 735 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 736 AllOnes; 737 EXPECT_EQ(SubRL, Two); 738 EXPECT_EQ(SubRL.getRawData(), RawDataL); 739 740 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 741 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 742 EXPECT_EQ(SubRR, Two); 743 EXPECT_EQ(SubRR.getRawData(), RawDataR); 744 745 // LValue's and constants 746 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 747 APInt SubLK = HighOneLowOne - 2; 748 EXPECT_EQ(SubLK, AllOnes); 749 750 // 2 - (-1) = 3 751 APInt SubKL = 2 - MinusOne; 752 EXPECT_EQ(SubKL, Three); 753 754 // RValue's and constants 755 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 756 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 757 EXPECT_EQ(SubRK, AllOnes); 758 EXPECT_EQ(SubRK.getRawData(), RawDataL); 759 760 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 761 EXPECT_EQ(SubKR, Three); 762 EXPECT_EQ(SubKR.getRawData(), RawDataR); 763 } 764 } 765 766 TEST(APIntTest, rvalue_bitwise) { 767 // Test all combinations of lvalue/rvalue lhs/rhs of and/or/xor 768 769 // Lamdba to return an APInt by value, but also provide the raw value of the 770 // allocated data. 771 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 772 APInt V(129, HexString, 16); 773 RawData = V.getRawData(); 774 return V; 775 }; 776 777 APInt Ten(129, "A", 16); 778 APInt Twelve(129, "C", 16); 779 780 const uint64_t *RawDataL = nullptr; 781 const uint64_t *RawDataR = nullptr; 782 783 { 784 // 12 & 10 = 8 785 APInt AndLL = Ten & Twelve; 786 EXPECT_EQ(AndLL, 0x8); 787 788 APInt AndLR = Ten & getRValue("C", RawDataR); 789 EXPECT_EQ(AndLR, 0x8); 790 EXPECT_EQ(AndLR.getRawData(), RawDataR); 791 792 APInt AndRL = getRValue("A", RawDataL) & Twelve; 793 EXPECT_EQ(AndRL, 0x8); 794 EXPECT_EQ(AndRL.getRawData(), RawDataL); 795 796 APInt AndRR = getRValue("A", RawDataL) & getRValue("C", RawDataR); 797 EXPECT_EQ(AndRR, 0x8); 798 EXPECT_EQ(AndRR.getRawData(), RawDataR); 799 800 // LValue's and constants 801 APInt AndLK = Ten & 0xc; 802 EXPECT_EQ(AndLK, 0x8); 803 804 APInt AndKL = 0xa & Twelve; 805 EXPECT_EQ(AndKL, 0x8); 806 807 // RValue's and constants 808 APInt AndRK = getRValue("A", RawDataL) & 0xc; 809 EXPECT_EQ(AndRK, 0x8); 810 EXPECT_EQ(AndRK.getRawData(), RawDataL); 811 812 APInt AndKR = 0xa & getRValue("C", RawDataR); 813 EXPECT_EQ(AndKR, 0x8); 814 EXPECT_EQ(AndKR.getRawData(), RawDataR); 815 } 816 817 { 818 // 12 | 10 = 14 819 APInt OrLL = Ten | Twelve; 820 EXPECT_EQ(OrLL, 0xe); 821 822 APInt OrLR = Ten | getRValue("C", RawDataR); 823 EXPECT_EQ(OrLR, 0xe); 824 EXPECT_EQ(OrLR.getRawData(), RawDataR); 825 826 APInt OrRL = getRValue("A", RawDataL) | Twelve; 827 EXPECT_EQ(OrRL, 0xe); 828 EXPECT_EQ(OrRL.getRawData(), RawDataL); 829 830 APInt OrRR = getRValue("A", RawDataL) | getRValue("C", RawDataR); 831 EXPECT_EQ(OrRR, 0xe); 832 EXPECT_EQ(OrRR.getRawData(), RawDataR); 833 834 // LValue's and constants 835 APInt OrLK = Ten | 0xc; 836 EXPECT_EQ(OrLK, 0xe); 837 838 APInt OrKL = 0xa | Twelve; 839 EXPECT_EQ(OrKL, 0xe); 840 841 // RValue's and constants 842 APInt OrRK = getRValue("A", RawDataL) | 0xc; 843 EXPECT_EQ(OrRK, 0xe); 844 EXPECT_EQ(OrRK.getRawData(), RawDataL); 845 846 APInt OrKR = 0xa | getRValue("C", RawDataR); 847 EXPECT_EQ(OrKR, 0xe); 848 EXPECT_EQ(OrKR.getRawData(), RawDataR); 849 } 850 851 { 852 // 12 ^ 10 = 6 853 APInt XorLL = Ten ^ Twelve; 854 EXPECT_EQ(XorLL, 0x6); 855 856 APInt XorLR = Ten ^ getRValue("C", RawDataR); 857 EXPECT_EQ(XorLR, 0x6); 858 EXPECT_EQ(XorLR.getRawData(), RawDataR); 859 860 APInt XorRL = getRValue("A", RawDataL) ^ Twelve; 861 EXPECT_EQ(XorRL, 0x6); 862 EXPECT_EQ(XorRL.getRawData(), RawDataL); 863 864 APInt XorRR = getRValue("A", RawDataL) ^ getRValue("C", RawDataR); 865 EXPECT_EQ(XorRR, 0x6); 866 EXPECT_EQ(XorRR.getRawData(), RawDataR); 867 868 // LValue's and constants 869 APInt XorLK = Ten ^ 0xc; 870 EXPECT_EQ(XorLK, 0x6); 871 872 APInt XorKL = 0xa ^ Twelve; 873 EXPECT_EQ(XorKL, 0x6); 874 875 // RValue's and constants 876 APInt XorRK = getRValue("A", RawDataL) ^ 0xc; 877 EXPECT_EQ(XorRK, 0x6); 878 EXPECT_EQ(XorRK.getRawData(), RawDataL); 879 880 APInt XorKR = 0xa ^ getRValue("C", RawDataR); 881 EXPECT_EQ(XorKR, 0x6); 882 EXPECT_EQ(XorKR.getRawData(), RawDataR); 883 } 884 } 885 886 TEST(APIntTest, rvalue_invert) { 887 // Lamdba to return an APInt by value, but also provide the raw value of the 888 // allocated data. 889 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 890 APInt V(129, HexString, 16); 891 RawData = V.getRawData(); 892 return V; 893 }; 894 895 APInt One(129, 1); 896 APInt NegativeTwo(129, -2ULL, true); 897 898 const uint64_t *RawData = nullptr; 899 900 { 901 // ~1 = -2 902 APInt NegL = ~One; 903 EXPECT_EQ(NegL, NegativeTwo); 904 905 APInt NegR = ~getRValue("1", RawData); 906 EXPECT_EQ(NegR, NegativeTwo); 907 EXPECT_EQ(NegR.getRawData(), RawData); 908 } 909 } 910 911 // Tests different div/rem varaints using scheme (a * b + c) / a 912 void testDiv(APInt a, APInt b, APInt c) { 913 ASSERT_TRUE(a.uge(b)); // Must: a >= b 914 ASSERT_TRUE(a.ugt(c)); // Must: a > c 915 916 auto p = a * b + c; 917 918 auto q = p.udiv(a); 919 auto r = p.urem(a); 920 EXPECT_EQ(b, q); 921 EXPECT_EQ(c, r); 922 APInt::udivrem(p, a, q, r); 923 EXPECT_EQ(b, q); 924 EXPECT_EQ(c, r); 925 q = p.sdiv(a); 926 r = p.srem(a); 927 EXPECT_EQ(b, q); 928 EXPECT_EQ(c, r); 929 APInt::sdivrem(p, a, q, r); 930 EXPECT_EQ(b, q); 931 EXPECT_EQ(c, r); 932 933 if (b.ugt(c)) { // Test also symmetric case 934 q = p.udiv(b); 935 r = p.urem(b); 936 EXPECT_EQ(a, q); 937 EXPECT_EQ(c, r); 938 APInt::udivrem(p, b, q, r); 939 EXPECT_EQ(a, q); 940 EXPECT_EQ(c, r); 941 q = p.sdiv(b); 942 r = p.srem(b); 943 EXPECT_EQ(a, q); 944 EXPECT_EQ(c, r); 945 APInt::sdivrem(p, b, q, r); 946 EXPECT_EQ(a, q); 947 EXPECT_EQ(c, r); 948 } 949 } 950 951 TEST(APIntTest, divrem_big1) { 952 // Tests KnuthDiv rare step D6 953 testDiv({256, "1ffffffffffffffff", 16}, 954 {256, "1ffffffffffffffff", 16}, 955 {256, 0}); 956 } 957 958 TEST(APIntTest, divrem_big2) { 959 // Tests KnuthDiv rare step D6 960 testDiv({1024, "112233ceff" 961 "cecece000000ffffffffffffffffffff" 962 "ffffffffffffffffffffffffffffffff" 963 "ffffffffffffffffffffffffffffffff" 964 "ffffffffffffffffffffffffffffff33", 16}, 965 {1024, "111111ffffffffffffffff" 966 "ffffffffffffffffffffffffffffffff" 967 "fffffffffffffffffffffffffffffccf" 968 "ffffffffffffffffffffffffffffff00", 16}, 969 {1024, 7919}); 970 } 971 972 TEST(APIntTest, divrem_big3) { 973 // Tests KnuthDiv case without shift 974 testDiv({256, "80000001ffffffffffffffff", 16}, 975 {256, "ffffffffffffff0000000", 16}, 976 {256, 4219}); 977 } 978 979 TEST(APIntTest, divrem_big4) { 980 // Tests heap allocation in divide() enfoced by huge numbers 981 testDiv(APInt{4096, 5}.shl(2001), 982 APInt{4096, 1}.shl(2000), 983 APInt{4096, 4219*13}); 984 } 985 986 TEST(APIntTest, divrem_big5) { 987 // Tests one word divisor case of divide() 988 testDiv(APInt{1024, 19}.shl(811), 989 APInt{1024, 4356013}, // one word 990 APInt{1024, 1}); 991 } 992 993 TEST(APIntTest, divrem_big6) { 994 // Tests some rare "borrow" cases in D4 step 995 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 996 APInt{512, "10000000000000001000000000000001", 16}, 997 APInt{512, "10000000000000000000000000000000", 16}); 998 } 999 1000 TEST(APIntTest, divrem_big7) { 1001 // Yet another test for KnuthDiv rare step D6. 1002 testDiv({224, "800000008000000200000005", 16}, 1003 {224, "fffffffd", 16}, 1004 {224, "80000000800000010000000f", 16}); 1005 } 1006 1007 void testDiv(APInt a, uint64_t b, APInt c) { 1008 auto p = a * b + c; 1009 1010 APInt q; 1011 uint64_t r; 1012 // Unsigned division will only work if our original number wasn't negative. 1013 if (!a.isNegative()) { 1014 q = p.udiv(b); 1015 r = p.urem(b); 1016 EXPECT_EQ(a, q); 1017 EXPECT_EQ(c, r); 1018 APInt::udivrem(p, b, q, r); 1019 EXPECT_EQ(a, q); 1020 EXPECT_EQ(c, r); 1021 } 1022 q = p.sdiv(b); 1023 r = p.srem(b); 1024 EXPECT_EQ(a, q); 1025 if (c.isNegative()) 1026 EXPECT_EQ(-c, -r); // Need to negate so the uint64_t compare will work. 1027 else 1028 EXPECT_EQ(c, r); 1029 int64_t sr; 1030 APInt::sdivrem(p, b, q, sr); 1031 EXPECT_EQ(a, q); 1032 if (c.isNegative()) 1033 EXPECT_EQ(-c, -sr); // Need to negate so the uint64_t compare will work. 1034 else 1035 EXPECT_EQ(c, sr); 1036 } 1037 1038 TEST(APIntTest, divremuint) { 1039 // Single word APInt 1040 testDiv(APInt{64, 9}, 1041 2, 1042 APInt{64, 1}); 1043 1044 // Single word negative APInt 1045 testDiv(-APInt{64, 9}, 1046 2, 1047 -APInt{64, 1}); 1048 1049 // Multiword dividend with only one significant word. 1050 testDiv(APInt{256, 9}, 1051 2, 1052 APInt{256, 1}); 1053 1054 // Negative dividend. 1055 testDiv(-APInt{256, 9}, 1056 2, 1057 -APInt{256, 1}); 1058 1059 // Multiword dividend 1060 testDiv(APInt{1024, 19}.shl(811), 1061 4356013, // one word 1062 APInt{1024, 1}); 1063 } 1064 1065 TEST(APIntTest, divrem_simple) { 1066 // Test simple cases. 1067 APInt A(65, 2), B(65, 2); 1068 APInt Q, R; 1069 1070 // X / X 1071 APInt::sdivrem(A, B, Q, R); 1072 EXPECT_EQ(Q, APInt(65, 1)); 1073 EXPECT_EQ(R, APInt(65, 0)); 1074 APInt::udivrem(A, B, Q, R); 1075 EXPECT_EQ(Q, APInt(65, 1)); 1076 EXPECT_EQ(R, APInt(65, 0)); 1077 1078 // 0 / X 1079 APInt O(65, 0); 1080 APInt::sdivrem(O, B, Q, R); 1081 EXPECT_EQ(Q, APInt(65, 0)); 1082 EXPECT_EQ(R, APInt(65, 0)); 1083 APInt::udivrem(O, B, Q, R); 1084 EXPECT_EQ(Q, APInt(65, 0)); 1085 EXPECT_EQ(R, APInt(65, 0)); 1086 1087 // X / 1 1088 APInt I(65, 1); 1089 APInt::sdivrem(A, I, Q, R); 1090 EXPECT_EQ(Q, A); 1091 EXPECT_EQ(R, APInt(65, 0)); 1092 APInt::udivrem(A, I, Q, R); 1093 EXPECT_EQ(Q, A); 1094 EXPECT_EQ(R, APInt(65, 0)); 1095 } 1096 1097 TEST(APIntTest, fromString) { 1098 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 1099 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 1100 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 1101 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 1102 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 1103 1104 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 1105 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 1106 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 1107 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 1108 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 1109 1110 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 1111 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 1112 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 1113 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 1114 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 1115 1116 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 1117 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 1118 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 1119 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 1120 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 1121 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 1122 1123 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 1124 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 1125 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 1126 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 1127 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 1128 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 1129 1130 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 1131 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 1132 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 1133 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 1134 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 1135 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 1136 1137 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 1138 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 1139 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 1140 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 1141 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 1142 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 1143 1144 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 1145 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 1146 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 1147 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 1148 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 1149 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 1150 1151 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 1152 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 1153 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 1154 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 1155 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 1156 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 1157 1158 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 1159 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 1160 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 1161 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 1162 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 1163 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 1164 1165 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 1166 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 1167 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 1168 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 1169 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 1170 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 1171 1172 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 1173 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 1174 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 1175 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 1176 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 1177 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 1178 } 1179 1180 TEST(APIntTest, SaturatingMath) { 1181 APInt AP_10 = APInt(8, 10); 1182 APInt AP_42 = APInt(8, 42); 1183 APInt AP_100 = APInt(8, 100); 1184 APInt AP_200 = APInt(8, 200); 1185 1186 EXPECT_EQ(APInt(8, 100), AP_100.truncUSat(8)); 1187 EXPECT_EQ(APInt(7, 100), AP_100.truncUSat(7)); 1188 EXPECT_EQ(APInt(6, 63), AP_100.truncUSat(6)); 1189 EXPECT_EQ(APInt(5, 31), AP_100.truncUSat(5)); 1190 1191 EXPECT_EQ(APInt(8, 200), AP_200.truncUSat(8)); 1192 EXPECT_EQ(APInt(7, 127), AP_200.truncUSat(7)); 1193 EXPECT_EQ(APInt(6, 63), AP_200.truncUSat(6)); 1194 EXPECT_EQ(APInt(5, 31), AP_200.truncUSat(5)); 1195 1196 EXPECT_EQ(APInt(8, 42), AP_42.truncSSat(8)); 1197 EXPECT_EQ(APInt(7, 42), AP_42.truncSSat(7)); 1198 EXPECT_EQ(APInt(6, 31), AP_42.truncSSat(6)); 1199 EXPECT_EQ(APInt(5, 15), AP_42.truncSSat(5)); 1200 1201 EXPECT_EQ(APInt(8, -56), AP_200.truncSSat(8)); 1202 EXPECT_EQ(APInt(7, -56), AP_200.truncSSat(7)); 1203 EXPECT_EQ(APInt(6, -32), AP_200.truncSSat(6)); 1204 EXPECT_EQ(APInt(5, -16), AP_200.truncSSat(5)); 1205 1206 EXPECT_EQ(APInt(8, 200), AP_100.uadd_sat(AP_100)); 1207 EXPECT_EQ(APInt(8, 255), AP_100.uadd_sat(AP_200)); 1208 EXPECT_EQ(APInt(8, 255), APInt(8, 255).uadd_sat(APInt(8, 255))); 1209 1210 EXPECT_EQ(APInt(8, 110), AP_10.sadd_sat(AP_100)); 1211 EXPECT_EQ(APInt(8, 127), AP_100.sadd_sat(AP_100)); 1212 EXPECT_EQ(APInt(8, -128), (-AP_100).sadd_sat(-AP_100)); 1213 EXPECT_EQ(APInt(8, -128), APInt(8, -128).sadd_sat(APInt(8, -128))); 1214 1215 EXPECT_EQ(APInt(8, 90), AP_100.usub_sat(AP_10)); 1216 EXPECT_EQ(APInt(8, 0), AP_100.usub_sat(AP_200)); 1217 EXPECT_EQ(APInt(8, 0), APInt(8, 0).usub_sat(APInt(8, 255))); 1218 1219 EXPECT_EQ(APInt(8, -90), AP_10.ssub_sat(AP_100)); 1220 EXPECT_EQ(APInt(8, 127), AP_100.ssub_sat(-AP_100)); 1221 EXPECT_EQ(APInt(8, -128), (-AP_100).ssub_sat(AP_100)); 1222 EXPECT_EQ(APInt(8, -128), APInt(8, -128).ssub_sat(APInt(8, 127))); 1223 1224 EXPECT_EQ(APInt(8, 250), APInt(8, 50).umul_sat(APInt(8, 5))); 1225 EXPECT_EQ(APInt(8, 255), APInt(8, 50).umul_sat(APInt(8, 6))); 1226 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, 3))); 1227 EXPECT_EQ(APInt(8, 255), APInt(8, 3).umul_sat(APInt(8, -128))); 1228 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, -128))); 1229 1230 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1231 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1232 EXPECT_EQ(APInt(8, 127), APInt(8, 127).smul_sat(APInt(8, 127))); 1233 EXPECT_EQ(APInt(8, -125), APInt(8, -25).smul_sat(APInt(8, 5))); 1234 EXPECT_EQ(APInt(8, -125), APInt(8, 25).smul_sat(APInt(8, -5))); 1235 EXPECT_EQ(APInt(8, 125), APInt(8, -25).smul_sat(APInt(8, -5))); 1236 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1237 EXPECT_EQ(APInt(8, -128), APInt(8, -25).smul_sat(APInt(8, 6))); 1238 EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6))); 1239 EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6))); 1240 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1241 1242 EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5))); 1243 EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6))); 1244 EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7))); 1245 EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8))); 1246 EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2))); 1247 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2))); 1248 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2))); 1249 1250 EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4))); 1251 EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5))); 1252 EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8))); 1253 EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4))); 1254 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5))); 1255 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6))); 1256 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7))); 1257 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8))); 1258 } 1259 1260 TEST(APIntTest, FromArray) { 1261 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 1262 } 1263 1264 TEST(APIntTest, StringBitsNeeded2) { 1265 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 1266 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 1267 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 1268 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 1269 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 1270 1271 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 1272 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 1273 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 1274 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 1275 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 1276 1277 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 1278 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 1279 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 1280 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 1281 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 1282 } 1283 1284 TEST(APIntTest, StringBitsNeeded8) { 1285 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 1286 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 1287 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 1288 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 1289 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 1290 1291 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 1292 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 1293 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 1294 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 1295 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 1296 1297 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 1298 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 1299 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 1300 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 1301 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 1302 } 1303 1304 TEST(APIntTest, StringBitsNeeded10) { 1305 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 1306 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 1307 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 1308 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 1309 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 1310 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 1311 1312 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1313 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1314 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1315 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1316 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1317 1318 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1319 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1320 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1321 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1322 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1323 1324 EXPECT_EQ(1U, APInt::getBitsNeeded("-1", 10)); 1325 EXPECT_EQ(2U, APInt::getBitsNeeded("-2", 10)); 1326 EXPECT_EQ(3U, APInt::getBitsNeeded("-4", 10)); 1327 EXPECT_EQ(4U, APInt::getBitsNeeded("-8", 10)); 1328 EXPECT_EQ(5U, APInt::getBitsNeeded("-16", 10)); 1329 EXPECT_EQ(6U, APInt::getBitsNeeded("-23", 10)); 1330 EXPECT_EQ(6U, APInt::getBitsNeeded("-32", 10)); 1331 EXPECT_EQ(7U, APInt::getBitsNeeded("-64", 10)); 1332 EXPECT_EQ(8U, APInt::getBitsNeeded("-127", 10)); 1333 EXPECT_EQ(8U, APInt::getBitsNeeded("-128", 10)); 1334 EXPECT_EQ(9U, APInt::getBitsNeeded("-255", 10)); 1335 EXPECT_EQ(9U, APInt::getBitsNeeded("-256", 10)); 1336 EXPECT_EQ(10U, APInt::getBitsNeeded("-512", 10)); 1337 EXPECT_EQ(11U, APInt::getBitsNeeded("-1024", 10)); 1338 EXPECT_EQ(12U, APInt::getBitsNeeded("-1025", 10)); 1339 } 1340 1341 TEST(APIntTest, StringBitsNeeded16) { 1342 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1343 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1344 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1345 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1346 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1347 1348 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1349 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1350 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1351 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1352 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1353 1354 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1355 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1356 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1357 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1358 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1359 } 1360 1361 TEST(APIntTest, toString) { 1362 SmallString<16> S; 1363 bool isSigned; 1364 1365 APInt(8, 0).toString(S, 2, true, true); 1366 EXPECT_EQ(std::string(S), "0b0"); 1367 S.clear(); 1368 APInt(8, 0).toString(S, 8, true, true); 1369 EXPECT_EQ(std::string(S), "00"); 1370 S.clear(); 1371 APInt(8, 0).toString(S, 10, true, true); 1372 EXPECT_EQ(std::string(S), "0"); 1373 S.clear(); 1374 APInt(8, 0).toString(S, 16, true, true); 1375 EXPECT_EQ(std::string(S), "0x0"); 1376 S.clear(); 1377 APInt(8, 0).toString(S, 36, true, false); 1378 EXPECT_EQ(std::string(S), "0"); 1379 S.clear(); 1380 1381 isSigned = false; 1382 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1383 EXPECT_EQ(std::string(S), "0b11111111"); 1384 S.clear(); 1385 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1386 EXPECT_EQ(std::string(S), "0377"); 1387 S.clear(); 1388 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1389 EXPECT_EQ(std::string(S), "255"); 1390 S.clear(); 1391 APInt(8, 255, isSigned).toString(S, 16, isSigned, true, /*UpperCase=*/false); 1392 EXPECT_EQ(std::string(S), "0xff"); 1393 S.clear(); 1394 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1395 EXPECT_EQ(std::string(S), "0xFF"); 1396 S.clear(); 1397 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1398 EXPECT_EQ(std::string(S), "73"); 1399 S.clear(); 1400 1401 isSigned = true; 1402 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1403 EXPECT_EQ(std::string(S), "-0b1"); 1404 S.clear(); 1405 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1406 EXPECT_EQ(std::string(S), "-01"); 1407 S.clear(); 1408 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1409 EXPECT_EQ(std::string(S), "-1"); 1410 S.clear(); 1411 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1412 EXPECT_EQ(std::string(S), "-0x1"); 1413 S.clear(); 1414 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1415 EXPECT_EQ(std::string(S), "-1"); 1416 S.clear(); 1417 } 1418 1419 TEST(APIntTest, Log2) { 1420 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1421 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1422 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1423 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1424 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1425 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1426 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1427 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1428 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1429 } 1430 1431 #ifdef GTEST_HAS_DEATH_TEST 1432 #ifndef NDEBUG 1433 TEST(APIntTest, StringDeath) { 1434 EXPECT_DEATH((void)APInt(32, "", 0), "Invalid string length"); 1435 EXPECT_DEATH((void)APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1436 EXPECT_DEATH((void)APInt(32, "", 10), "Invalid string length"); 1437 EXPECT_DEATH((void)APInt(32, "-", 10), "String is only a sign, needs a value."); 1438 EXPECT_DEATH((void)APInt(1, "1234", 10), "Insufficient bit width"); 1439 EXPECT_DEATH((void)APInt(32, "\0", 10), "Invalid string length"); 1440 EXPECT_DEATH((void)APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1441 EXPECT_DEATH((void)APInt(32, "1L", 10), "Invalid character in digit string"); 1442 } 1443 #endif 1444 #endif 1445 1446 TEST(APIntTest, mul_clear) { 1447 APInt ValA(65, -1ULL); 1448 APInt ValB(65, 4); 1449 APInt ValC(65, 0); 1450 ValC = ValA * ValB; 1451 ValA *= ValB; 1452 SmallString<16> StrA, StrC; 1453 ValA.toString(StrA, 10, false); 1454 ValC.toString(StrC, 10, false); 1455 EXPECT_EQ(std::string(StrA), std::string(StrC)); 1456 } 1457 1458 TEST(APIntTest, Rotate) { 1459 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1460 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1461 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1462 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1463 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1464 1465 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1466 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1467 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1468 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1469 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1470 1471 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1472 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1473 1474 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1475 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1476 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1477 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1478 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1479 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1480 1481 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1482 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1483 1484 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1485 1486 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1487 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1488 1489 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1490 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1491 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1492 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1493 1494 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1495 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1496 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1497 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1498 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1499 1500 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1501 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1502 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1503 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1504 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1505 1506 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1507 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1508 1509 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1510 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1511 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1512 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1513 1514 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1515 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1516 1517 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1518 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1519 1520 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1521 1522 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1523 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1524 1525 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1526 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1527 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1528 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1529 1530 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1531 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1532 EXPECT_EQ(Rot, Big.rotr(144)); 1533 1534 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1535 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1536 } 1537 1538 TEST(APIntTest, Splat) { 1539 APInt ValA(8, 0x01); 1540 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1541 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1542 1543 APInt ValB(3, 5); 1544 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1545 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1546 } 1547 1548 TEST(APIntTest, tcDecrement) { 1549 // Test single word decrement. 1550 1551 // No out borrow. 1552 { 1553 APInt::WordType singleWord = ~APInt::WordType(0) << (APInt::APINT_BITS_PER_WORD - 1); 1554 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1555 EXPECT_EQ(carry, APInt::WordType(0)); 1556 EXPECT_EQ(singleWord, ~APInt::WordType(0) >> 1); 1557 } 1558 1559 // With out borrow. 1560 { 1561 APInt::WordType singleWord = 0; 1562 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1563 EXPECT_EQ(carry, APInt::WordType(1)); 1564 EXPECT_EQ(singleWord, ~APInt::WordType(0)); 1565 } 1566 1567 // Test multiword decrement. 1568 1569 // No across word borrow, no out borrow. 1570 { 1571 APInt::WordType test[4] = {0x1, 0x1, 0x1, 0x1}; 1572 APInt::WordType expected[4] = {0x0, 0x1, 0x1, 0x1}; 1573 APInt::tcDecrement(test, 4); 1574 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1575 } 1576 1577 // 1 across word borrow, no out borrow. 1578 { 1579 APInt::WordType test[4] = {0x0, 0xF, 0x1, 0x1}; 1580 APInt::WordType expected[4] = {~APInt::WordType(0), 0xE, 0x1, 0x1}; 1581 APInt::WordType carry = APInt::tcDecrement(test, 4); 1582 EXPECT_EQ(carry, APInt::WordType(0)); 1583 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1584 } 1585 1586 // 2 across word borrow, no out borrow. 1587 { 1588 APInt::WordType test[4] = {0x0, 0x0, 0xC, 0x1}; 1589 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), 0xB, 0x1}; 1590 APInt::WordType carry = APInt::tcDecrement(test, 4); 1591 EXPECT_EQ(carry, APInt::WordType(0)); 1592 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1593 } 1594 1595 // 3 across word borrow, no out borrow. 1596 { 1597 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x1}; 1598 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), 0x0}; 1599 APInt::WordType carry = APInt::tcDecrement(test, 4); 1600 EXPECT_EQ(carry, APInt::WordType(0)); 1601 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1602 } 1603 1604 // 3 across word borrow, with out borrow. 1605 { 1606 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x0}; 1607 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0)}; 1608 APInt::WordType carry = APInt::tcDecrement(test, 4); 1609 EXPECT_EQ(carry, APInt::WordType(1)); 1610 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1611 } 1612 } 1613 1614 TEST(APIntTest, arrayAccess) { 1615 // Single word check. 1616 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1617 APInt A1(64, E1); 1618 for (unsigned i = 0, e = 64; i < e; ++i) { 1619 EXPECT_EQ(bool(E1 & (1ULL << i)), 1620 A1[i]); 1621 } 1622 1623 // Multiword check. 1624 APInt::WordType E2[4] = { 1625 0xEB6EB136591CBA21ULL, 1626 0x7B9358BD6A33F10AULL, 1627 0x7E7FFA5EADD8846ULL, 1628 0x305F341CA00B613DULL 1629 }; 1630 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 1631 for (unsigned i = 0; i < 4; ++i) { 1632 for (unsigned j = 0; j < APInt::APINT_BITS_PER_WORD; ++j) { 1633 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1634 A2[i*APInt::APINT_BITS_PER_WORD + j]); 1635 } 1636 } 1637 } 1638 1639 TEST(APIntTest, LargeAPIntConstruction) { 1640 // Check that we can properly construct very large APInt. It is very 1641 // unlikely that people will ever do this, but it is a legal input, 1642 // so we should not crash on it. 1643 APInt A9(UINT32_MAX, 0); 1644 EXPECT_FALSE(A9.getBoolValue()); 1645 } 1646 1647 TEST(APIntTest, nearestLogBase2) { 1648 // Single word check. 1649 1650 // Test round up. 1651 uint64_t I1 = 0x1800001; 1652 APInt A1(64, I1); 1653 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1654 1655 // Test round down. 1656 uint64_t I2 = 0x1000011; 1657 APInt A2(64, I2); 1658 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1659 1660 // Test ties round up. 1661 uint64_t I3 = 0x1800000; 1662 APInt A3(64, I3); 1663 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1664 1665 // Multiple word check. 1666 1667 // Test round up. 1668 APInt::WordType I4[4] = {0x0, 0xF, 0x18, 0x0}; 1669 APInt A4(APInt::APINT_BITS_PER_WORD*4, I4); 1670 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1671 1672 // Test round down. 1673 APInt::WordType I5[4] = {0x0, 0xF, 0x10, 0x0}; 1674 APInt A5(APInt::APINT_BITS_PER_WORD*4, I5); 1675 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1676 1677 // Test ties round up. 1678 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1679 APInt A6(APInt::APINT_BITS_PER_WORD*4, I6); 1680 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1681 1682 // Test BitWidth == 1 special cases. 1683 APInt A7(1, 1); 1684 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1685 APInt A8(1, 0); 1686 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1687 1688 // Test the zero case when we have a bit width large enough such 1689 // that the bit width is larger than UINT32_MAX-1. 1690 APInt A9(UINT32_MAX, 0); 1691 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1692 } 1693 1694 TEST(APIntTest, IsSplat) { 1695 APInt A(32, 0x01010101); 1696 EXPECT_FALSE(A.isSplat(1)); 1697 EXPECT_FALSE(A.isSplat(2)); 1698 EXPECT_FALSE(A.isSplat(4)); 1699 EXPECT_TRUE(A.isSplat(8)); 1700 EXPECT_TRUE(A.isSplat(16)); 1701 EXPECT_TRUE(A.isSplat(32)); 1702 1703 APInt B(24, 0xAAAAAA); 1704 EXPECT_FALSE(B.isSplat(1)); 1705 EXPECT_TRUE(B.isSplat(2)); 1706 EXPECT_TRUE(B.isSplat(4)); 1707 EXPECT_TRUE(B.isSplat(8)); 1708 EXPECT_TRUE(B.isSplat(24)); 1709 1710 APInt C(24, 0xABAAAB); 1711 EXPECT_FALSE(C.isSplat(1)); 1712 EXPECT_FALSE(C.isSplat(2)); 1713 EXPECT_FALSE(C.isSplat(4)); 1714 EXPECT_FALSE(C.isSplat(8)); 1715 EXPECT_TRUE(C.isSplat(24)); 1716 1717 APInt D(32, 0xABBAABBA); 1718 EXPECT_FALSE(D.isSplat(1)); 1719 EXPECT_FALSE(D.isSplat(2)); 1720 EXPECT_FALSE(D.isSplat(4)); 1721 EXPECT_FALSE(D.isSplat(8)); 1722 EXPECT_TRUE(D.isSplat(16)); 1723 EXPECT_TRUE(D.isSplat(32)); 1724 1725 APInt E(32, 0); 1726 EXPECT_TRUE(E.isSplat(1)); 1727 EXPECT_TRUE(E.isSplat(2)); 1728 EXPECT_TRUE(E.isSplat(4)); 1729 EXPECT_TRUE(E.isSplat(8)); 1730 EXPECT_TRUE(E.isSplat(16)); 1731 EXPECT_TRUE(E.isSplat(32)); 1732 } 1733 1734 TEST(APIntTest, isMask) { 1735 EXPECT_FALSE(APInt(32, 0x01010101).isMask()); 1736 EXPECT_FALSE(APInt(32, 0xf0000000).isMask()); 1737 EXPECT_FALSE(APInt(32, 0xffff0000).isMask()); 1738 EXPECT_FALSE(APInt(32, 0xff << 1).isMask()); 1739 1740 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1741 EXPECT_FALSE(APInt(N, 0).isMask()); 1742 1743 APInt One(N, 1); 1744 for (int I = 1; I <= N; ++I) { 1745 APInt MaskVal = One.shl(I) - 1; 1746 EXPECT_TRUE(MaskVal.isMask()); 1747 EXPECT_TRUE(MaskVal.isMask(I)); 1748 } 1749 } 1750 } 1751 1752 TEST(APIntTest, isShiftedMask) { 1753 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask()); 1754 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask()); 1755 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask()); 1756 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask()); 1757 1758 unsigned MaskIdx, MaskLen; 1759 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask(MaskIdx, MaskLen)); 1760 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask(MaskIdx, MaskLen)); 1761 EXPECT_EQ(28, (int)MaskIdx); 1762 EXPECT_EQ(4, (int)MaskLen); 1763 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask(MaskIdx, MaskLen)); 1764 EXPECT_EQ(16, (int)MaskIdx); 1765 EXPECT_EQ(16, (int)MaskLen); 1766 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask(MaskIdx, MaskLen)); 1767 EXPECT_EQ(1, (int)MaskIdx); 1768 EXPECT_EQ(8, (int)MaskLen); 1769 1770 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1771 EXPECT_FALSE(APInt(N, 0).isShiftedMask()); 1772 EXPECT_FALSE(APInt(N, 0).isShiftedMask(MaskIdx, MaskLen)); 1773 1774 APInt One(N, 1); 1775 for (int I = 1; I < N; ++I) { 1776 APInt MaskVal = One.shl(I) - 1; 1777 EXPECT_TRUE(MaskVal.isShiftedMask()); 1778 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1779 EXPECT_EQ(0, (int)MaskIdx); 1780 EXPECT_EQ(I, (int)MaskLen); 1781 } 1782 for (int I = 1; I < N - 1; ++I) { 1783 APInt MaskVal = One.shl(I); 1784 EXPECT_TRUE(MaskVal.isShiftedMask()); 1785 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1786 EXPECT_EQ(I, (int)MaskIdx); 1787 EXPECT_EQ(1, (int)MaskLen); 1788 } 1789 for (int I = 1; I < N; ++I) { 1790 APInt MaskVal = APInt::getHighBitsSet(N, I); 1791 EXPECT_TRUE(MaskVal.isShiftedMask()); 1792 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1793 EXPECT_EQ(N - I, (int)MaskIdx); 1794 EXPECT_EQ(I, (int)MaskLen); 1795 } 1796 } 1797 } 1798 1799 TEST(APIntTest, isOneBitSet) { 1800 EXPECT_FALSE(APInt(5, 0x00).isOneBitSet(0)); 1801 EXPECT_FALSE(APInt(5, 0x02).isOneBitSet(0)); 1802 EXPECT_FALSE(APInt(5, 0x03).isOneBitSet(0)); 1803 EXPECT_TRUE(APInt(5, 0x02).isOneBitSet(1)); 1804 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isOneBitSet(31)); 1805 1806 EXPECT_TRUE(APInt::getOneBitSet(255, 13).isOneBitSet(13)); 1807 } 1808 1809 TEST(APIntTest, isPowerOf2) { 1810 EXPECT_FALSE(APInt(5, 0x00).isPowerOf2()); 1811 EXPECT_FALSE(APInt(32, 0x11).isPowerOf2()); 1812 EXPECT_TRUE(APInt(17, 0x01).isPowerOf2()); 1813 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isPowerOf2()); 1814 1815 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1816 EXPECT_FALSE(APInt(N, 0).isPowerOf2()); 1817 EXPECT_TRUE(APInt::getSignedMinValue(N).isPowerOf2()); 1818 1819 APInt One(N, 1); 1820 for (int I = 1; I < N - 1; ++I) { 1821 EXPECT_TRUE(APInt::getOneBitSet(N, I).isPowerOf2()); 1822 1823 APInt MaskVal = One.shl(I); 1824 EXPECT_TRUE(MaskVal.isPowerOf2()); 1825 } 1826 } 1827 } 1828 1829 TEST(APIntTest, isNegatedPowerOf2) { 1830 EXPECT_FALSE(APInt(5, 0x00).isNegatedPowerOf2()); 1831 EXPECT_TRUE(APInt(15, 0x7ffe).isNegatedPowerOf2()); 1832 EXPECT_TRUE(APInt(16, 0xfffc).isNegatedPowerOf2()); 1833 EXPECT_TRUE(APInt(32, 0xffffffff).isNegatedPowerOf2()); 1834 1835 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1836 EXPECT_FALSE(APInt(N, 0).isNegatedPowerOf2()); 1837 EXPECT_TRUE(APInt::getAllOnes(N).isNegatedPowerOf2()); 1838 EXPECT_TRUE(APInt::getSignedMinValue(N).isNegatedPowerOf2()); 1839 EXPECT_TRUE((-APInt::getSignedMinValue(N)).isNegatedPowerOf2()); 1840 1841 APInt One(N, 1); 1842 for (int I = 1; I < N - 1; ++I) { 1843 EXPECT_FALSE(APInt::getOneBitSet(N, I).isNegatedPowerOf2()); 1844 EXPECT_TRUE((-APInt::getOneBitSet(N, I)).isNegatedPowerOf2()); 1845 1846 APInt MaskVal = One.shl(I); 1847 EXPECT_TRUE((-MaskVal).isNegatedPowerOf2()); 1848 1849 APInt ShiftMaskVal = One.getHighBitsSet(N, I); 1850 EXPECT_TRUE(ShiftMaskVal.isNegatedPowerOf2()); 1851 } 1852 } 1853 } 1854 1855 // Test that self-move works with EXPENSIVE_CHECKS. It calls std::shuffle which 1856 // does self-move on some platforms. 1857 #ifdef EXPENSIVE_CHECKS 1858 #if defined(__clang__) 1859 // Disable the pragma warning from versions of Clang without -Wself-move 1860 #pragma clang diagnostic push 1861 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1862 // Disable the warning that triggers on exactly what is being tested. 1863 #pragma clang diagnostic push 1864 #pragma clang diagnostic ignored "-Wself-move" 1865 #endif 1866 TEST(APIntTest, SelfMoveAssignment) { 1867 APInt X(32, 0xdeadbeef); 1868 X = std::move(X); 1869 EXPECT_EQ(32u, X.getBitWidth()); 1870 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1871 1872 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1873 APInt Y(128, Bits); 1874 Y = std::move(Y); 1875 EXPECT_EQ(128u, Y.getBitWidth()); 1876 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1877 const uint64_t *Raw = Y.getRawData(); 1878 EXPECT_EQ(2u, Y.getNumWords()); 1879 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1880 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1881 } 1882 #if defined(__clang__) 1883 #pragma clang diagnostic pop 1884 #pragma clang diagnostic pop 1885 #endif 1886 #endif // EXPENSIVE_CHECKS 1887 1888 TEST(APIntTest, byteSwap) { 1889 EXPECT_EQ(0x00000000, APInt(16, 0x0000).byteSwap()); 1890 EXPECT_EQ(0x0000010f, APInt(16, 0x0f01).byteSwap()); 1891 EXPECT_EQ(0x00ff8000, APInt(24, 0x0080ff).byteSwap()); 1892 EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap()); 1893 EXPECT_EQ(0x228811aaffULL, APInt(40, 0xffaa118822ULL).byteSwap()); 1894 EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap()); 1895 EXPECT_EQ(0xff050403020100ULL, APInt(56, 0x000102030405ffULL).byteSwap()); 1896 EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap()); 1897 1898 for (unsigned N : {16, 24, 32, 48, 56, 64, 72, 80, 96, 112, 128, 248, 256, 1899 1024, 1032, 1040}) { 1900 for (unsigned I = 0; I < N; I += 8) { 1901 APInt X = APInt::getBitsSet(N, I, I + 8); 1902 APInt Y = APInt::getBitsSet(N, N - I - 8, N - I); 1903 EXPECT_EQ(Y, X.byteSwap()); 1904 EXPECT_EQ(X, Y.byteSwap()); 1905 } 1906 } 1907 } 1908 1909 TEST(APIntTest, reverseBits) { 1910 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1911 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1912 1913 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1914 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1915 1916 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1917 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1918 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1919 1920 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1921 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1922 1923 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1924 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1925 1926 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1927 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1928 1929 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1930 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1931 1932 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1933 1934 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1935 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1936 1937 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1938 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1939 1940 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1941 63, 64, 65, 127, 128, 257, 1024 }) { 1942 for (unsigned I = 0; I < N; ++I) { 1943 APInt X = APInt::getOneBitSet(N, I); 1944 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1945 EXPECT_EQ(Y, X.reverseBits()); 1946 EXPECT_EQ(X, Y.reverseBits()); 1947 } 1948 } 1949 } 1950 1951 TEST(APIntTest, insertBits) { 1952 APInt iSrc(31, 0x00123456); 1953 1954 // Direct copy. 1955 APInt i31(31, 0x76543210ull); 1956 i31.insertBits(iSrc, 0); 1957 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 1958 1959 // Single word src/dst insertion. 1960 APInt i63(63, 0x01234567FFFFFFFFull); 1961 i63.insertBits(iSrc, 4); 1962 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 1963 1964 // Zero width insert is a noop. 1965 i31.insertBits(APInt::getZeroWidth(), 1); 1966 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 1967 1968 // Insert single word src into one word of dst. 1969 APInt i120(120, UINT64_MAX, true); 1970 i120.insertBits(iSrc, 8); 1971 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 1972 1973 // Insert single word src into two words of dst. 1974 APInt i127(127, UINT64_MAX, true); 1975 i127.insertBits(iSrc, 48); 1976 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 1977 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 1978 1979 // Insert on word boundaries. 1980 APInt i128(128, 0); 1981 i128.insertBits(APInt(64, UINT64_MAX, true), 0); 1982 i128.insertBits(APInt(64, UINT64_MAX, true), 64); 1983 EXPECT_EQ(-1, i128.getSExtValue()); 1984 1985 APInt i256(256, UINT64_MAX, true); 1986 i256.insertBits(APInt(65, 0), 0); 1987 i256.insertBits(APInt(69, 0), 64); 1988 i256.insertBits(APInt(128, 0), 128); 1989 EXPECT_EQ(0u, i256.getSExtValue()); 1990 1991 APInt i257(257, 0); 1992 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 1993 EXPECT_EQ(i257.extractBits(64, 0).getZExtValue(), 0x0000000000000000ull); 1994 EXPECT_EQ(i257.extractBits(64, 64).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 1995 EXPECT_EQ(i257.extractBits(64, 128).getZExtValue(), 0x00000000FFFFFFFFull); 1996 EXPECT_EQ(i257.extractBits(65, 192).getZExtValue(), 0x0000000000000000ull); 1997 1998 // General insertion. 1999 APInt i260(260, UINT64_MAX, true); 2000 i260.insertBits(APInt(129, 1ull << 48), 15); 2001 EXPECT_EQ(i260.extractBits(64, 0).getZExtValue(), 0x8000000000007FFFull); 2002 EXPECT_EQ(i260.extractBits(64, 64).getZExtValue(), 0x0000000000000000ull); 2003 EXPECT_EQ(i260.extractBits(64, 128).getZExtValue(), 0xFFFFFFFFFFFF0000ull); 2004 EXPECT_EQ(i260.extractBits(64, 192).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2005 EXPECT_EQ(i260.extractBits(4, 256).getZExtValue(), 0x000000000000000Full); 2006 } 2007 2008 TEST(APIntTest, insertBitsUInt64) { 2009 // Tests cloned from insertBits but adapted to the numBits <= 64 constraint 2010 uint64_t iSrc = 0x00123456; 2011 2012 // Direct copy. 2013 APInt i31(31, 0x76543210ull); 2014 i31.insertBits(iSrc, 0, 31); 2015 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2016 2017 // Single word src/dst insertion. 2018 APInt i63(63, 0x01234567FFFFFFFFull); 2019 i63.insertBits(iSrc, 4, 31); 2020 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2021 2022 // Insert single word src into one word of dst. 2023 APInt i120(120, UINT64_MAX, true); 2024 i120.insertBits(iSrc, 8, 31); 2025 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2026 2027 // Insert single word src into two words of dst. 2028 APInt i127(127, UINT64_MAX, true); 2029 i127.insertBits(iSrc, 48, 31); 2030 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2031 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2032 2033 // Insert on word boundaries. 2034 APInt i128(128, 0); 2035 i128.insertBits(UINT64_MAX, 0, 64); 2036 i128.insertBits(UINT64_MAX, 64, 64); 2037 EXPECT_EQ(-1, i128.getSExtValue()); 2038 2039 APInt i256(256, UINT64_MAX, true); 2040 i256.insertBits(0, 0, 64); 2041 i256.insertBits(0, 64, 1); 2042 i256.insertBits(0, 64, 64); 2043 i256.insertBits(0, 128, 5); 2044 i256.insertBits(0, 128, 64); 2045 i256.insertBits(0, 192, 64); 2046 EXPECT_EQ(0u, i256.getSExtValue()); 2047 2048 APInt i257(257, 0); 2049 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2050 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 0), 0x0000000000000000ull); 2051 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 64), 0xFFFFFFFFFFFFFFFFull); 2052 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 128), 0x00000000FFFFFFFFull); 2053 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 192), 0x0000000000000000ull); 2054 EXPECT_EQ(i257.extractBitsAsZExtValue(1, 256), 0x0000000000000000ull); 2055 2056 // General insertion. 2057 APInt i260(260, UINT64_MAX, true); 2058 i260.insertBits(APInt(129, 1ull << 48), 15); 2059 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 0), 0x8000000000007FFFull); 2060 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 64), 0x0000000000000000ull); 2061 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 128), 0xFFFFFFFFFFFF0000ull); 2062 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 192), 0xFFFFFFFFFFFFFFFFull); 2063 EXPECT_EQ(i260.extractBitsAsZExtValue(4, 256), 0x000000000000000Full); 2064 } 2065 2066 TEST(APIntTest, extractBits) { 2067 APInt i32(32, 0x1234567); 2068 EXPECT_EQ(0x3456, i32.extractBits(16, 4)); 2069 2070 APInt i64(64, 0x01234567FFFFFFFFull); 2071 EXPECT_EQ(0xFFFFFFFF, i64.extractBits(32, 0)); 2072 EXPECT_EQ(0xFFFFFFFF, i64.trunc(32)); 2073 EXPECT_EQ(0x01234567, i64.extractBits(32, 32)); 2074 EXPECT_EQ(0x01234567, i64.lshr(32).trunc(32)); 2075 2076 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2077 EXPECT_EQ(0xFFu, i257.extractBits(16, 0)); 2078 EXPECT_EQ(0xFFu, i257.lshr(0).trunc(16)); 2079 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1)); 2080 EXPECT_EQ((0xFFu >> 1), i257.lshr(1).trunc(16)); 2081 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue()); 2082 EXPECT_EQ(-1, i257.lshr(64).trunc(32).getSExtValue()); 2083 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue()); 2084 EXPECT_EQ(-1, i257.lshr(128).trunc(128).getSExtValue()); 2085 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue()); 2086 EXPECT_EQ(-1, i257.lshr(191).trunc(66).getSExtValue()); 2087 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2088 i257.extractBits(128, 1).getSExtValue()); 2089 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2090 i257.lshr(1).trunc(128).getSExtValue()); 2091 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2092 i257.extractBits(129, 1).getSExtValue()); 2093 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2094 i257.lshr(1).trunc(129).getSExtValue()); 2095 2096 EXPECT_EQ(APInt(48, 0), 2097 APInt(144, "281474976710655", 10).extractBits(48, 48)); 2098 EXPECT_EQ(APInt(48, 0), 2099 APInt(144, "281474976710655", 10).lshr(48).trunc(48)); 2100 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2101 APInt(144, "281474976710655", 10).extractBits(48, 0)); 2102 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2103 APInt(144, "281474976710655", 10).lshr(0).trunc(48)); 2104 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2105 APInt(144, "281474976710655", 10).extractBits(48, 1)); 2106 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2107 APInt(144, "281474976710655", 10).lshr(1).trunc(48)); 2108 } 2109 2110 TEST(APIntTest, extractBitsAsZExtValue) { 2111 // Tests based on extractBits 2112 APInt i32(32, 0x1234567); 2113 EXPECT_EQ(0x3456u, i32.extractBitsAsZExtValue(16, 4)); 2114 2115 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2116 EXPECT_EQ(0xFFu, i257.extractBitsAsZExtValue(16, 0)); 2117 EXPECT_EQ((0xFFu >> 1), i257.extractBitsAsZExtValue(16, 1)); 2118 EXPECT_EQ(0xFFFFFFFFull, i257.extractBitsAsZExtValue(32, 64)); 2119 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 128)); 2120 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 192)); 2121 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 191)); 2122 EXPECT_EQ(0x3u, i257.extractBitsAsZExtValue(2, 255)); 2123 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2124 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2125 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2126 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2127 EXPECT_EQ(0x1ull, i257.extractBitsAsZExtValue(1, 129)); 2128 2129 EXPECT_EQ(APInt(48, 0), 2130 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 48)); 2131 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2132 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 0)); 2133 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2134 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 1)); 2135 } 2136 2137 TEST(APIntTest, getLowBitsSet) { 2138 APInt i128lo64 = APInt::getLowBitsSet(128, 64); 2139 EXPECT_EQ(0u, i128lo64.countl_one()); 2140 EXPECT_EQ(64u, i128lo64.countl_zero()); 2141 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2142 EXPECT_EQ(0u, i128lo64.countr_zero()); 2143 EXPECT_EQ(64u, i128lo64.countr_one()); 2144 EXPECT_EQ(64u, i128lo64.popcount()); 2145 } 2146 2147 TEST(APIntTest, getBitsSet) { 2148 APInt i64hi1lo1 = APInt::getBitsSet(64, 1, 63); 2149 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2150 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2151 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2152 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2153 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2154 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2155 2156 APInt i127hi1lo1 = APInt::getBitsSet(127, 1, 126); 2157 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2158 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2159 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2160 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2161 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2162 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2163 } 2164 2165 TEST(APIntTest, getBitsSetWithWrap) { 2166 APInt i64hi1lo1 = APInt::getBitsSetWithWrap(64, 1, 63); 2167 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2168 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2169 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2170 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2171 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2172 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2173 2174 APInt i127hi1lo1 = APInt::getBitsSetWithWrap(127, 1, 126); 2175 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2176 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2177 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2178 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2179 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2180 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2181 2182 APInt i64hi1lo1wrap = APInt::getBitsSetWithWrap(64, 63, 1); 2183 EXPECT_EQ(1u, i64hi1lo1wrap.countl_one()); 2184 EXPECT_EQ(0u, i64hi1lo1wrap.countl_zero()); 2185 EXPECT_EQ(64u, i64hi1lo1wrap.getActiveBits()); 2186 EXPECT_EQ(0u, i64hi1lo1wrap.countr_zero()); 2187 EXPECT_EQ(1u, i64hi1lo1wrap.countr_one()); 2188 EXPECT_EQ(2u, i64hi1lo1wrap.popcount()); 2189 2190 APInt i127hi1lo1wrap = APInt::getBitsSetWithWrap(127, 126, 1); 2191 EXPECT_EQ(1u, i127hi1lo1wrap.countl_one()); 2192 EXPECT_EQ(0u, i127hi1lo1wrap.countl_zero()); 2193 EXPECT_EQ(127u, i127hi1lo1wrap.getActiveBits()); 2194 EXPECT_EQ(0u, i127hi1lo1wrap.countr_zero()); 2195 EXPECT_EQ(1u, i127hi1lo1wrap.countr_one()); 2196 EXPECT_EQ(2u, i127hi1lo1wrap.popcount()); 2197 2198 APInt i32hiequallowrap = APInt::getBitsSetWithWrap(32, 10, 10); 2199 EXPECT_EQ(32u, i32hiequallowrap.countl_one()); 2200 EXPECT_EQ(0u, i32hiequallowrap.countl_zero()); 2201 EXPECT_EQ(32u, i32hiequallowrap.getActiveBits()); 2202 EXPECT_EQ(0u, i32hiequallowrap.countr_zero()); 2203 EXPECT_EQ(32u, i32hiequallowrap.countr_one()); 2204 EXPECT_EQ(32u, i32hiequallowrap.popcount()); 2205 } 2206 2207 TEST(APIntTest, getHighBitsSet) { 2208 APInt i64hi32 = APInt::getHighBitsSet(64, 32); 2209 EXPECT_EQ(32u, i64hi32.countl_one()); 2210 EXPECT_EQ(0u, i64hi32.countl_zero()); 2211 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2212 EXPECT_EQ(32u, i64hi32.countr_zero()); 2213 EXPECT_EQ(0u, i64hi32.countr_one()); 2214 EXPECT_EQ(32u, i64hi32.popcount()); 2215 } 2216 2217 TEST(APIntTest, getBitsSetFrom) { 2218 APInt i64hi31 = APInt::getBitsSetFrom(64, 33); 2219 EXPECT_EQ(31u, i64hi31.countl_one()); 2220 EXPECT_EQ(0u, i64hi31.countl_zero()); 2221 EXPECT_EQ(64u, i64hi31.getActiveBits()); 2222 EXPECT_EQ(33u, i64hi31.countr_zero()); 2223 EXPECT_EQ(0u, i64hi31.countr_one()); 2224 EXPECT_EQ(31u, i64hi31.popcount()); 2225 } 2226 2227 TEST(APIntTest, setLowBits) { 2228 APInt i64lo32(64, 0); 2229 i64lo32.setLowBits(32); 2230 EXPECT_EQ(0u, i64lo32.countl_one()); 2231 EXPECT_EQ(32u, i64lo32.countl_zero()); 2232 EXPECT_EQ(32u, i64lo32.getActiveBits()); 2233 EXPECT_EQ(0u, i64lo32.countr_zero()); 2234 EXPECT_EQ(32u, i64lo32.countr_one()); 2235 EXPECT_EQ(32u, i64lo32.popcount()); 2236 2237 APInt i128lo64(128, 0); 2238 i128lo64.setLowBits(64); 2239 EXPECT_EQ(0u, i128lo64.countl_one()); 2240 EXPECT_EQ(64u, i128lo64.countl_zero()); 2241 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2242 EXPECT_EQ(0u, i128lo64.countr_zero()); 2243 EXPECT_EQ(64u, i128lo64.countr_one()); 2244 EXPECT_EQ(64u, i128lo64.popcount()); 2245 2246 APInt i128lo24(128, 0); 2247 i128lo24.setLowBits(24); 2248 EXPECT_EQ(0u, i128lo24.countl_one()); 2249 EXPECT_EQ(104u, i128lo24.countl_zero()); 2250 EXPECT_EQ(24u, i128lo24.getActiveBits()); 2251 EXPECT_EQ(0u, i128lo24.countr_zero()); 2252 EXPECT_EQ(24u, i128lo24.countr_one()); 2253 EXPECT_EQ(24u, i128lo24.popcount()); 2254 2255 APInt i128lo104(128, 0); 2256 i128lo104.setLowBits(104); 2257 EXPECT_EQ(0u, i128lo104.countl_one()); 2258 EXPECT_EQ(24u, i128lo104.countl_zero()); 2259 EXPECT_EQ(104u, i128lo104.getActiveBits()); 2260 EXPECT_EQ(0u, i128lo104.countr_zero()); 2261 EXPECT_EQ(104u, i128lo104.countr_one()); 2262 EXPECT_EQ(104u, i128lo104.popcount()); 2263 2264 APInt i128lo0(128, 0); 2265 i128lo0.setLowBits(0); 2266 EXPECT_EQ(0u, i128lo0.countl_one()); 2267 EXPECT_EQ(128u, i128lo0.countl_zero()); 2268 EXPECT_EQ(0u, i128lo0.getActiveBits()); 2269 EXPECT_EQ(128u, i128lo0.countr_zero()); 2270 EXPECT_EQ(0u, i128lo0.countr_one()); 2271 EXPECT_EQ(0u, i128lo0.popcount()); 2272 2273 APInt i80lo79(80, 0); 2274 i80lo79.setLowBits(79); 2275 EXPECT_EQ(0u, i80lo79.countl_one()); 2276 EXPECT_EQ(1u, i80lo79.countl_zero()); 2277 EXPECT_EQ(79u, i80lo79.getActiveBits()); 2278 EXPECT_EQ(0u, i80lo79.countr_zero()); 2279 EXPECT_EQ(79u, i80lo79.countr_one()); 2280 EXPECT_EQ(79u, i80lo79.popcount()); 2281 } 2282 2283 TEST(APIntTest, setHighBits) { 2284 APInt i64hi32(64, 0); 2285 i64hi32.setHighBits(32); 2286 EXPECT_EQ(32u, i64hi32.countl_one()); 2287 EXPECT_EQ(0u, i64hi32.countl_zero()); 2288 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2289 EXPECT_EQ(32u, i64hi32.countr_zero()); 2290 EXPECT_EQ(0u, i64hi32.countr_one()); 2291 EXPECT_EQ(32u, i64hi32.popcount()); 2292 2293 APInt i128hi64(128, 0); 2294 i128hi64.setHighBits(64); 2295 EXPECT_EQ(64u, i128hi64.countl_one()); 2296 EXPECT_EQ(0u, i128hi64.countl_zero()); 2297 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2298 EXPECT_EQ(64u, i128hi64.countr_zero()); 2299 EXPECT_EQ(0u, i128hi64.countr_one()); 2300 EXPECT_EQ(64u, i128hi64.popcount()); 2301 2302 APInt i128hi24(128, 0); 2303 i128hi24.setHighBits(24); 2304 EXPECT_EQ(24u, i128hi24.countl_one()); 2305 EXPECT_EQ(0u, i128hi24.countl_zero()); 2306 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2307 EXPECT_EQ(104u, i128hi24.countr_zero()); 2308 EXPECT_EQ(0u, i128hi24.countr_one()); 2309 EXPECT_EQ(24u, i128hi24.popcount()); 2310 2311 APInt i128hi104(128, 0); 2312 i128hi104.setHighBits(104); 2313 EXPECT_EQ(104u, i128hi104.countl_one()); 2314 EXPECT_EQ(0u, i128hi104.countl_zero()); 2315 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2316 EXPECT_EQ(24u, i128hi104.countr_zero()); 2317 EXPECT_EQ(0u, i128hi104.countr_one()); 2318 EXPECT_EQ(104u, i128hi104.popcount()); 2319 2320 APInt i128hi0(128, 0); 2321 i128hi0.setHighBits(0); 2322 EXPECT_EQ(0u, i128hi0.countl_one()); 2323 EXPECT_EQ(128u, i128hi0.countl_zero()); 2324 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2325 EXPECT_EQ(128u, i128hi0.countr_zero()); 2326 EXPECT_EQ(0u, i128hi0.countr_one()); 2327 EXPECT_EQ(0u, i128hi0.popcount()); 2328 2329 APInt i80hi1(80, 0); 2330 i80hi1.setHighBits(1); 2331 EXPECT_EQ(1u, i80hi1.countl_one()); 2332 EXPECT_EQ(0u, i80hi1.countl_zero()); 2333 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2334 EXPECT_EQ(79u, i80hi1.countr_zero()); 2335 EXPECT_EQ(0u, i80hi1.countr_one()); 2336 EXPECT_EQ(1u, i80hi1.popcount()); 2337 2338 APInt i32hi16(32, 0); 2339 i32hi16.setHighBits(16); 2340 EXPECT_EQ(16u, i32hi16.countl_one()); 2341 EXPECT_EQ(0u, i32hi16.countl_zero()); 2342 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2343 EXPECT_EQ(16u, i32hi16.countr_zero()); 2344 EXPECT_EQ(0u, i32hi16.countr_one()); 2345 EXPECT_EQ(16u, i32hi16.popcount()); 2346 } 2347 2348 TEST(APIntTest, setBitsFrom) { 2349 APInt i64from63(64, 0); 2350 i64from63.setBitsFrom(63); 2351 EXPECT_EQ(1u, i64from63.countl_one()); 2352 EXPECT_EQ(0u, i64from63.countl_zero()); 2353 EXPECT_EQ(64u, i64from63.getActiveBits()); 2354 EXPECT_EQ(63u, i64from63.countr_zero()); 2355 EXPECT_EQ(0u, i64from63.countr_one()); 2356 EXPECT_EQ(1u, i64from63.popcount()); 2357 } 2358 2359 TEST(APIntTest, setAllBits) { 2360 APInt i32(32, 0); 2361 i32.setAllBits(); 2362 EXPECT_EQ(32u, i32.countl_one()); 2363 EXPECT_EQ(0u, i32.countl_zero()); 2364 EXPECT_EQ(32u, i32.getActiveBits()); 2365 EXPECT_EQ(0u, i32.countr_zero()); 2366 EXPECT_EQ(32u, i32.countr_one()); 2367 EXPECT_EQ(32u, i32.popcount()); 2368 2369 APInt i64(64, 0); 2370 i64.setAllBits(); 2371 EXPECT_EQ(64u, i64.countl_one()); 2372 EXPECT_EQ(0u, i64.countl_zero()); 2373 EXPECT_EQ(64u, i64.getActiveBits()); 2374 EXPECT_EQ(0u, i64.countr_zero()); 2375 EXPECT_EQ(64u, i64.countr_one()); 2376 EXPECT_EQ(64u, i64.popcount()); 2377 2378 APInt i96(96, 0); 2379 i96.setAllBits(); 2380 EXPECT_EQ(96u, i96.countl_one()); 2381 EXPECT_EQ(0u, i96.countl_zero()); 2382 EXPECT_EQ(96u, i96.getActiveBits()); 2383 EXPECT_EQ(0u, i96.countr_zero()); 2384 EXPECT_EQ(96u, i96.countr_one()); 2385 EXPECT_EQ(96u, i96.popcount()); 2386 2387 APInt i128(128, 0); 2388 i128.setAllBits(); 2389 EXPECT_EQ(128u, i128.countl_one()); 2390 EXPECT_EQ(0u, i128.countl_zero()); 2391 EXPECT_EQ(128u, i128.getActiveBits()); 2392 EXPECT_EQ(0u, i128.countr_zero()); 2393 EXPECT_EQ(128u, i128.countr_one()); 2394 EXPECT_EQ(128u, i128.popcount()); 2395 } 2396 2397 TEST(APIntTest, getLoBits) { 2398 APInt i32(32, 0xfa); 2399 i32.setHighBits(1); 2400 EXPECT_EQ(0xa, i32.getLoBits(4)); 2401 APInt i128(128, 0xfa); 2402 i128.setHighBits(1); 2403 EXPECT_EQ(0xa, i128.getLoBits(4)); 2404 } 2405 2406 TEST(APIntTest, getHiBits) { 2407 APInt i32(32, 0xfa); 2408 i32.setHighBits(2); 2409 EXPECT_EQ(0xc, i32.getHiBits(4)); 2410 APInt i128(128, 0xfa); 2411 i128.setHighBits(2); 2412 EXPECT_EQ(0xc, i128.getHiBits(4)); 2413 } 2414 2415 TEST(APIntTest, clearLowBits) { 2416 APInt i64hi32 = APInt::getAllOnes(64); 2417 i64hi32.clearLowBits(32); 2418 EXPECT_EQ(32u, i64hi32.countl_one()); 2419 EXPECT_EQ(0u, i64hi32.countl_zero()); 2420 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2421 EXPECT_EQ(32u, i64hi32.countr_zero()); 2422 EXPECT_EQ(0u, i64hi32.countr_one()); 2423 EXPECT_EQ(32u, i64hi32.popcount()); 2424 2425 APInt i128hi64 = APInt::getAllOnes(128); 2426 i128hi64.clearLowBits(64); 2427 EXPECT_EQ(64u, i128hi64.countl_one()); 2428 EXPECT_EQ(0u, i128hi64.countl_zero()); 2429 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2430 EXPECT_EQ(64u, i128hi64.countr_zero()); 2431 EXPECT_EQ(0u, i128hi64.countr_one()); 2432 EXPECT_EQ(64u, i128hi64.popcount()); 2433 2434 APInt i128hi24 = APInt::getAllOnes(128); 2435 i128hi24.clearLowBits(104); 2436 EXPECT_EQ(24u, i128hi24.countl_one()); 2437 EXPECT_EQ(0u, i128hi24.countl_zero()); 2438 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2439 EXPECT_EQ(104u, i128hi24.countr_zero()); 2440 EXPECT_EQ(0u, i128hi24.countr_one()); 2441 EXPECT_EQ(24u, i128hi24.popcount()); 2442 2443 APInt i128hi104 = APInt::getAllOnes(128); 2444 i128hi104.clearLowBits(24); 2445 EXPECT_EQ(104u, i128hi104.countl_one()); 2446 EXPECT_EQ(0u, i128hi104.countl_zero()); 2447 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2448 EXPECT_EQ(24u, i128hi104.countr_zero()); 2449 EXPECT_EQ(0u, i128hi104.countr_one()); 2450 EXPECT_EQ(104u, i128hi104.popcount()); 2451 2452 APInt i128hi0 = APInt::getAllOnes(128); 2453 i128hi0.clearLowBits(128); 2454 EXPECT_EQ(0u, i128hi0.countl_one()); 2455 EXPECT_EQ(128u, i128hi0.countl_zero()); 2456 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2457 EXPECT_EQ(128u, i128hi0.countr_zero()); 2458 EXPECT_EQ(0u, i128hi0.countr_one()); 2459 EXPECT_EQ(0u, i128hi0.popcount()); 2460 2461 APInt i80hi1 = APInt::getAllOnes(80); 2462 i80hi1.clearLowBits(79); 2463 EXPECT_EQ(1u, i80hi1.countl_one()); 2464 EXPECT_EQ(0u, i80hi1.countl_zero()); 2465 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2466 EXPECT_EQ(79u, i80hi1.countr_zero()); 2467 EXPECT_EQ(0u, i80hi1.countr_one()); 2468 EXPECT_EQ(1u, i80hi1.popcount()); 2469 2470 APInt i32hi16 = APInt::getAllOnes(32); 2471 i32hi16.clearLowBits(16); 2472 EXPECT_EQ(16u, i32hi16.countl_one()); 2473 EXPECT_EQ(0u, i32hi16.countl_zero()); 2474 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2475 EXPECT_EQ(16u, i32hi16.countr_zero()); 2476 EXPECT_EQ(0u, i32hi16.countr_one()); 2477 EXPECT_EQ(16u, i32hi16.popcount()); 2478 } 2479 2480 TEST(APIntTest, GCD) { 2481 using APIntOps::GreatestCommonDivisor; 2482 2483 for (unsigned Bits : {1, 2, 32, 63, 64, 65}) { 2484 // Test some corner cases near zero. 2485 APInt Zero(Bits, 0), One(Bits, 1); 2486 EXPECT_EQ(GreatestCommonDivisor(Zero, Zero), Zero); 2487 EXPECT_EQ(GreatestCommonDivisor(Zero, One), One); 2488 EXPECT_EQ(GreatestCommonDivisor(One, Zero), One); 2489 EXPECT_EQ(GreatestCommonDivisor(One, One), One); 2490 2491 if (Bits > 1) { 2492 APInt Two(Bits, 2); 2493 EXPECT_EQ(GreatestCommonDivisor(Zero, Two), Two); 2494 EXPECT_EQ(GreatestCommonDivisor(One, Two), One); 2495 EXPECT_EQ(GreatestCommonDivisor(Two, Two), Two); 2496 2497 // Test some corner cases near the highest representable value. 2498 APInt Max(Bits, 0); 2499 Max.setAllBits(); 2500 EXPECT_EQ(GreatestCommonDivisor(Zero, Max), Max); 2501 EXPECT_EQ(GreatestCommonDivisor(One, Max), One); 2502 EXPECT_EQ(GreatestCommonDivisor(Two, Max), One); 2503 EXPECT_EQ(GreatestCommonDivisor(Max, Max), Max); 2504 2505 APInt MaxOver2 = Max.udiv(Two); 2506 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max), One); 2507 // Max - 1 == Max / 2 * 2, because Max is odd. 2508 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max - 1), MaxOver2); 2509 } 2510 } 2511 2512 // Compute the 20th Mersenne prime. 2513 const unsigned BitWidth = 4450; 2514 APInt HugePrime = APInt::getLowBitsSet(BitWidth, 4423); 2515 2516 // 9931 and 123456 are coprime. 2517 APInt A = HugePrime * APInt(BitWidth, 9931); 2518 APInt B = HugePrime * APInt(BitWidth, 123456); 2519 APInt C = GreatestCommonDivisor(A, B); 2520 EXPECT_EQ(C, HugePrime); 2521 } 2522 2523 TEST(APIntTest, LogicalRightShift) { 2524 APInt i256(APInt::getHighBitsSet(256, 2)); 2525 2526 i256.lshrInPlace(1); 2527 EXPECT_EQ(1U, i256.countl_zero()); 2528 EXPECT_EQ(253U, i256.countr_zero()); 2529 EXPECT_EQ(2U, i256.popcount()); 2530 2531 i256.lshrInPlace(62); 2532 EXPECT_EQ(63U, i256.countl_zero()); 2533 EXPECT_EQ(191U, i256.countr_zero()); 2534 EXPECT_EQ(2U, i256.popcount()); 2535 2536 i256.lshrInPlace(65); 2537 EXPECT_EQ(128U, i256.countl_zero()); 2538 EXPECT_EQ(126U, i256.countr_zero()); 2539 EXPECT_EQ(2U, i256.popcount()); 2540 2541 i256.lshrInPlace(64); 2542 EXPECT_EQ(192U, i256.countl_zero()); 2543 EXPECT_EQ(62U, i256.countr_zero()); 2544 EXPECT_EQ(2U, i256.popcount()); 2545 2546 i256.lshrInPlace(63); 2547 EXPECT_EQ(255U, i256.countl_zero()); 2548 EXPECT_EQ(0U, i256.countr_zero()); 2549 EXPECT_EQ(1U, i256.popcount()); 2550 2551 // Ensure we handle large shifts of multi-word. 2552 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2553 EXPECT_EQ(0, neg_one.lshr(128)); 2554 } 2555 2556 TEST(APIntTest, ArithmeticRightShift) { 2557 APInt i72(APInt::getHighBitsSet(72, 1)); 2558 i72.ashrInPlace(46); 2559 EXPECT_EQ(47U, i72.countl_one()); 2560 EXPECT_EQ(25U, i72.countr_zero()); 2561 EXPECT_EQ(47U, i72.popcount()); 2562 2563 i72 = APInt::getHighBitsSet(72, 1); 2564 i72.ashrInPlace(64); 2565 EXPECT_EQ(65U, i72.countl_one()); 2566 EXPECT_EQ(7U, i72.countr_zero()); 2567 EXPECT_EQ(65U, i72.popcount()); 2568 2569 APInt i128(APInt::getHighBitsSet(128, 1)); 2570 i128.ashrInPlace(64); 2571 EXPECT_EQ(65U, i128.countl_one()); 2572 EXPECT_EQ(63U, i128.countr_zero()); 2573 EXPECT_EQ(65U, i128.popcount()); 2574 2575 // Ensure we handle large shifts of multi-word. 2576 const APInt signmin32(APInt::getSignedMinValue(32)); 2577 EXPECT_TRUE(signmin32.ashr(32).isAllOnes()); 2578 2579 // Ensure we handle large shifts of multi-word. 2580 const APInt umax32(APInt::getSignedMaxValue(32)); 2581 EXPECT_EQ(0, umax32.ashr(32)); 2582 2583 // Ensure we handle large shifts of multi-word. 2584 const APInt signmin128(APInt::getSignedMinValue(128)); 2585 EXPECT_TRUE(signmin128.ashr(128).isAllOnes()); 2586 2587 // Ensure we handle large shifts of multi-word. 2588 const APInt umax128(APInt::getSignedMaxValue(128)); 2589 EXPECT_EQ(0, umax128.ashr(128)); 2590 } 2591 2592 TEST(APIntTest, LeftShift) { 2593 APInt i256(APInt::getLowBitsSet(256, 2)); 2594 2595 i256 <<= 1; 2596 EXPECT_EQ(253U, i256.countl_zero()); 2597 EXPECT_EQ(1U, i256.countr_zero()); 2598 EXPECT_EQ(2U, i256.popcount()); 2599 2600 i256 <<= 62; 2601 EXPECT_EQ(191U, i256.countl_zero()); 2602 EXPECT_EQ(63U, i256.countr_zero()); 2603 EXPECT_EQ(2U, i256.popcount()); 2604 2605 i256 <<= 65; 2606 EXPECT_EQ(126U, i256.countl_zero()); 2607 EXPECT_EQ(128U, i256.countr_zero()); 2608 EXPECT_EQ(2U, i256.popcount()); 2609 2610 i256 <<= 64; 2611 EXPECT_EQ(62U, i256.countl_zero()); 2612 EXPECT_EQ(192U, i256.countr_zero()); 2613 EXPECT_EQ(2U, i256.popcount()); 2614 2615 i256 <<= 63; 2616 EXPECT_EQ(0U, i256.countl_zero()); 2617 EXPECT_EQ(255U, i256.countr_zero()); 2618 EXPECT_EQ(1U, i256.popcount()); 2619 2620 // Ensure we handle large shifts of multi-word. 2621 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2622 EXPECT_EQ(0, neg_one.shl(128)); 2623 } 2624 2625 TEST(APIntTest, isSubsetOf) { 2626 APInt i32_1(32, 1); 2627 APInt i32_2(32, 2); 2628 APInt i32_3(32, 3); 2629 EXPECT_FALSE(i32_3.isSubsetOf(i32_1)); 2630 EXPECT_TRUE(i32_1.isSubsetOf(i32_3)); 2631 EXPECT_FALSE(i32_2.isSubsetOf(i32_1)); 2632 EXPECT_FALSE(i32_1.isSubsetOf(i32_2)); 2633 EXPECT_TRUE(i32_3.isSubsetOf(i32_3)); 2634 2635 APInt i128_1(128, 1); 2636 APInt i128_2(128, 2); 2637 APInt i128_3(128, 3); 2638 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2639 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2640 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2641 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2642 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2643 2644 i128_1 <<= 64; 2645 i128_2 <<= 64; 2646 i128_3 <<= 64; 2647 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2648 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2649 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2650 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2651 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2652 } 2653 2654 TEST(APIntTest, sext) { 2655 EXPECT_EQ(0, APInt(1, 0).sext(64)); 2656 EXPECT_EQ(~uint64_t(0), APInt(1, 1).sext(64)); 2657 2658 APInt i32_max(APInt::getSignedMaxValue(32).sext(63)); 2659 EXPECT_EQ(i32_max, i32_max.sext(63)); 2660 EXPECT_EQ(32U, i32_max.countl_zero()); 2661 EXPECT_EQ(0U, i32_max.countr_zero()); 2662 EXPECT_EQ(31U, i32_max.popcount()); 2663 2664 APInt i32_min(APInt::getSignedMinValue(32).sext(63)); 2665 EXPECT_EQ(i32_min, i32_min.sext(63)); 2666 EXPECT_EQ(32U, i32_min.countl_one()); 2667 EXPECT_EQ(31U, i32_min.countr_zero()); 2668 EXPECT_EQ(32U, i32_min.popcount()); 2669 2670 APInt i32_neg1(APInt(32, ~uint64_t(0)).sext(63)); 2671 EXPECT_EQ(i32_neg1, i32_neg1.sext(63)); 2672 EXPECT_EQ(63U, i32_neg1.countl_one()); 2673 EXPECT_EQ(0U, i32_neg1.countr_zero()); 2674 EXPECT_EQ(63U, i32_neg1.popcount()); 2675 } 2676 2677 TEST(APIntTest, trunc) { 2678 APInt val(32, 0xFFFFFFFF); 2679 EXPECT_EQ(0xFFFF, val.trunc(16)); 2680 EXPECT_EQ(0xFFFFFFFF, val.trunc(32)); 2681 } 2682 2683 TEST(APIntTest, concat) { 2684 APInt Int1(4, 0x1ULL); 2685 APInt Int3(4, 0x3ULL); 2686 2687 EXPECT_EQ(0x31, Int3.concat(Int1)); 2688 EXPECT_EQ(APInt(12, 0x313), Int3.concat(Int1).concat(Int3)); 2689 EXPECT_EQ(APInt(16, 0x3313), Int3.concat(Int3).concat(Int1).concat(Int3)); 2690 2691 APInt I64(64, 0x3ULL); 2692 EXPECT_EQ(I64, I64.concat(I64).lshr(64).trunc(64)); 2693 2694 APInt I65(65, 0x3ULL); 2695 APInt I0 = APInt::getZeroWidth(); 2696 EXPECT_EQ(I65, I65.concat(I0)); 2697 EXPECT_EQ(I65, I0.concat(I65)); 2698 } 2699 2700 TEST(APIntTest, multiply) { 2701 APInt i64(64, 1234); 2702 2703 EXPECT_EQ(7006652, i64 * 5678); 2704 EXPECT_EQ(7006652, 5678 * i64); 2705 2706 APInt i128 = APInt::getOneBitSet(128, 64); 2707 APInt i128_1234(128, 1234); 2708 i128_1234 <<= 64; 2709 EXPECT_EQ(i128_1234, i128 * 1234); 2710 EXPECT_EQ(i128_1234, 1234 * i128); 2711 2712 APInt i96 = APInt::getOneBitSet(96, 64); 2713 i96 *= ~0ULL; 2714 EXPECT_EQ(32U, i96.countl_one()); 2715 EXPECT_EQ(32U, i96.popcount()); 2716 EXPECT_EQ(64U, i96.countr_zero()); 2717 } 2718 2719 TEST(APIntTest, RoundingUDiv) { 2720 for (uint64_t Ai = 1; Ai <= 255; Ai++) { 2721 APInt A(8, Ai); 2722 APInt Zero(8, 0); 2723 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::UP)); 2724 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::DOWN)); 2725 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2726 2727 for (uint64_t Bi = 1; Bi <= 255; Bi++) { 2728 APInt B(8, Bi); 2729 { 2730 APInt Quo = APIntOps::RoundingUDiv(A, B, APInt::Rounding::UP); 2731 auto Prod = Quo.zext(16) * B.zext(16); 2732 EXPECT_TRUE(Prod.uge(Ai)); 2733 if (Prod.ugt(Ai)) { 2734 EXPECT_TRUE(((Quo - 1).zext(16) * B.zext(16)).ult(Ai)); 2735 } 2736 } 2737 { 2738 APInt Quo = A.udiv(B); 2739 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2740 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::DOWN)); 2741 } 2742 } 2743 } 2744 } 2745 2746 TEST(APIntTest, RoundingSDiv) { 2747 for (int64_t Ai = -128; Ai <= 127; Ai++) { 2748 APInt A(8, Ai); 2749 2750 if (Ai != 0) { 2751 APInt Zero(8, 0); 2752 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::UP)); 2753 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::DOWN)); 2754 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2755 } 2756 2757 for (int64_t Bi = -128; Bi <= 127; Bi++) { 2758 if (Bi == 0) 2759 continue; 2760 2761 APInt B(8, Bi); 2762 APInt QuoTowardZero = A.sdiv(B); 2763 { 2764 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::UP); 2765 if (A.srem(B).isZero()) { 2766 EXPECT_EQ(QuoTowardZero, Quo); 2767 } else if (A.isNegative() != 2768 B.isNegative()) { // if the math quotient is negative. 2769 EXPECT_EQ(QuoTowardZero, Quo); 2770 } else { 2771 EXPECT_EQ(QuoTowardZero + 1, Quo); 2772 } 2773 } 2774 { 2775 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::DOWN); 2776 if (A.srem(B).isZero()) { 2777 EXPECT_EQ(QuoTowardZero, Quo); 2778 } else if (A.isNegative() != 2779 B.isNegative()) { // if the math quotient is negative. 2780 EXPECT_EQ(QuoTowardZero - 1, Quo); 2781 } else { 2782 EXPECT_EQ(QuoTowardZero, Quo); 2783 } 2784 } 2785 EXPECT_EQ(QuoTowardZero, 2786 APIntOps::RoundingSDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2787 } 2788 } 2789 } 2790 2791 TEST(APIntTest, umul_ov) { 2792 const std::pair<uint64_t, uint64_t> Overflows[] = { 2793 {0x8000000000000000, 2}, 2794 {0x5555555555555556, 3}, 2795 {4294967296, 4294967296}, 2796 {4294967295, 4294967298}, 2797 }; 2798 const std::pair<uint64_t, uint64_t> NonOverflows[] = { 2799 {0x7fffffffffffffff, 2}, 2800 {0x5555555555555555, 3}, 2801 {4294967295, 4294967297}, 2802 }; 2803 2804 bool Overflow; 2805 for (auto &X : Overflows) { 2806 APInt A(64, X.first); 2807 APInt B(64, X.second); 2808 (void)A.umul_ov(B, Overflow); 2809 EXPECT_TRUE(Overflow); 2810 } 2811 for (auto &X : NonOverflows) { 2812 APInt A(64, X.first); 2813 APInt B(64, X.second); 2814 (void)A.umul_ov(B, Overflow); 2815 EXPECT_FALSE(Overflow); 2816 } 2817 2818 for (unsigned Bits = 1; Bits <= 5; ++Bits) 2819 for (unsigned A = 0; A != 1u << Bits; ++A) 2820 for (unsigned B = 0; B != 1u << Bits; ++B) { 2821 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 2822 APInt Narrow = N1.umul_ov(N2, Overflow); 2823 APInt Wide = N1.zext(2 * Bits) * N2.zext(2 * Bits); 2824 EXPECT_EQ(Wide.trunc(Bits), Narrow); 2825 EXPECT_EQ(Narrow.zext(2 * Bits) != Wide, Overflow); 2826 } 2827 } 2828 2829 TEST(APIntTest, smul_ov) { 2830 for (unsigned Bits = 1; Bits <= 5; ++Bits) 2831 for (unsigned A = 0; A != 1u << Bits; ++A) 2832 for (unsigned B = 0; B != 1u << Bits; ++B) { 2833 bool Overflow; 2834 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 2835 APInt Narrow = N1.smul_ov(N2, Overflow); 2836 APInt Wide = N1.sext(2 * Bits) * N2.sext(2 * Bits); 2837 EXPECT_EQ(Wide.trunc(Bits), Narrow); 2838 EXPECT_EQ(Narrow.sext(2 * Bits) != Wide, Overflow); 2839 } 2840 } 2841 2842 TEST(APIntTest, SolveQuadraticEquationWrap) { 2843 // Verify that "Solution" is the first non-negative integer that solves 2844 // Ax^2 + Bx + C = "0 or overflow", i.e. that it is a correct solution 2845 // as calculated by SolveQuadraticEquationWrap. 2846 auto Validate = [] (int A, int B, int C, unsigned Width, int Solution) { 2847 int Mask = (1 << Width) - 1; 2848 2849 // Solution should be non-negative. 2850 EXPECT_GE(Solution, 0); 2851 2852 auto OverflowBits = [] (int64_t V, unsigned W) { 2853 return V & -(1 << W); 2854 }; 2855 2856 int64_t Over0 = OverflowBits(C, Width); 2857 2858 auto IsZeroOrOverflow = [&] (int X) { 2859 int64_t ValueAtX = A*X*X + B*X + C; 2860 int64_t OverX = OverflowBits(ValueAtX, Width); 2861 return (ValueAtX & Mask) == 0 || OverX != Over0; 2862 }; 2863 2864 auto EquationToString = [&] (const char *X_str) { 2865 return (Twine(A) + Twine(X_str) + Twine("^2 + ") + Twine(B) + 2866 Twine(X_str) + Twine(" + ") + Twine(C) + Twine(", bitwidth: ") + 2867 Twine(Width)).str(); 2868 }; 2869 2870 auto IsSolution = [&] (const char *X_str, int X) { 2871 if (IsZeroOrOverflow(X)) 2872 return ::testing::AssertionSuccess() 2873 << X << " is a solution of " << EquationToString(X_str); 2874 return ::testing::AssertionFailure() 2875 << X << " is not an expected solution of " 2876 << EquationToString(X_str); 2877 }; 2878 2879 auto IsNotSolution = [&] (const char *X_str, int X) { 2880 if (!IsZeroOrOverflow(X)) 2881 return ::testing::AssertionSuccess() 2882 << X << " is not a solution of " << EquationToString(X_str); 2883 return ::testing::AssertionFailure() 2884 << X << " is an unexpected solution of " 2885 << EquationToString(X_str); 2886 }; 2887 2888 // This is the important part: make sure that there is no solution that 2889 // is less than the calculated one. 2890 if (Solution > 0) { 2891 for (int X = 1; X < Solution-1; ++X) 2892 EXPECT_PRED_FORMAT1(IsNotSolution, X); 2893 } 2894 2895 // Verify that the calculated solution is indeed a solution. 2896 EXPECT_PRED_FORMAT1(IsSolution, Solution); 2897 }; 2898 2899 // Generate all possible quadratic equations with Width-bit wide integer 2900 // coefficients, get the solution from SolveQuadraticEquationWrap, and 2901 // verify that the solution is correct. 2902 auto Iterate = [&] (unsigned Width) { 2903 assert(1 < Width && Width < 32); 2904 int Low = -(1 << (Width-1)); 2905 int High = (1 << (Width-1)); 2906 2907 for (int A = Low; A != High; ++A) { 2908 if (A == 0) 2909 continue; 2910 for (int B = Low; B != High; ++B) { 2911 for (int C = Low; C != High; ++C) { 2912 std::optional<APInt> S = APIntOps::SolveQuadraticEquationWrap( 2913 APInt(Width, A), APInt(Width, B), APInt(Width, C), Width); 2914 if (S) 2915 Validate(A, B, C, Width, S->getSExtValue()); 2916 } 2917 } 2918 } 2919 }; 2920 2921 // Test all widths in [2..6]. 2922 for (unsigned i = 2; i <= 6; ++i) 2923 Iterate(i); 2924 } 2925 2926 TEST(APIntTest, MultiplicativeInverseExaustive) { 2927 for (unsigned BitWidth = 1; BitWidth <= 16; ++BitWidth) { 2928 for (unsigned Value = 0; Value < (1u << BitWidth); ++Value) { 2929 APInt V = APInt(BitWidth, Value); 2930 APInt MulInv = 2931 V.zext(BitWidth + 1) 2932 .multiplicativeInverse(APInt::getSignedMinValue(BitWidth + 1)) 2933 .trunc(BitWidth); 2934 APInt One = V * MulInv; 2935 if (!V.isZero() && V.countr_zero() == 0) { 2936 // Multiplicative inverse exists for all odd numbers. 2937 EXPECT_TRUE(One.isOne()); 2938 } else { 2939 // Multiplicative inverse does not exist for even numbers (and 0). 2940 EXPECT_TRUE(MulInv.isZero()); 2941 } 2942 } 2943 } 2944 } 2945 2946 TEST(APIntTest, GetMostSignificantDifferentBit) { 2947 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 0)), 2948 std::nullopt); 2949 EXPECT_EQ( 2950 APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 42)), 2951 std::nullopt); 2952 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 1)), 2953 0u); 2954 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 2)), 2955 1u); 2956 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 3)), 2957 1u); 2958 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 0)), 2959 0u); 2960 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 1)), 2961 std::nullopt); 2962 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 2)), 2963 1u); 2964 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 3)), 2965 1u); 2966 EXPECT_EQ( 2967 *APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 112)), 2968 6u); 2969 } 2970 2971 TEST(APIntTest, GetMostSignificantDifferentBitExaustive) { 2972 auto GetHighestDifferentBitBruteforce = 2973 [](const APInt &V0, const APInt &V1) -> std::optional<unsigned> { 2974 assert(V0.getBitWidth() == V1.getBitWidth() && "Must have same bitwidth"); 2975 if (V0 == V1) 2976 return std::nullopt; // Bitwise identical. 2977 // There is a mismatch. Let's find the most significant different bit. 2978 for (int Bit = V0.getBitWidth() - 1; Bit >= 0; --Bit) { 2979 if (V0[Bit] == V1[Bit]) 2980 continue; 2981 return Bit; 2982 } 2983 llvm_unreachable("Must have found bit mismatch."); 2984 }; 2985 2986 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) { 2987 for (unsigned V0 = 0; V0 < (1u << BitWidth); ++V0) { 2988 for (unsigned V1 = 0; V1 < (1u << BitWidth); ++V1) { 2989 APInt A = APInt(BitWidth, V0); 2990 APInt B = APInt(BitWidth, V1); 2991 2992 auto Bit = APIntOps::GetMostSignificantDifferentBit(A, B); 2993 EXPECT_EQ(Bit, GetHighestDifferentBitBruteforce(A, B)); 2994 2995 if (!Bit) 2996 EXPECT_EQ(A, B); 2997 else { 2998 EXPECT_NE(A, B); 2999 for (unsigned NumLowBits = 0; NumLowBits <= BitWidth; ++NumLowBits) { 3000 APInt Adash = A; 3001 Adash.clearLowBits(NumLowBits); 3002 APInt Bdash = B; 3003 Bdash.clearLowBits(NumLowBits); 3004 // Clearing only low bits up to and including *Bit is sufficient 3005 // to make values equal. 3006 if (NumLowBits >= 1 + *Bit) 3007 EXPECT_EQ(Adash, Bdash); 3008 else 3009 EXPECT_NE(Adash, Bdash); 3010 } 3011 } 3012 } 3013 } 3014 } 3015 } 3016 3017 TEST(APIntTest, SignbitZeroChecks) { 3018 EXPECT_TRUE(APInt(8, -1).isNegative()); 3019 EXPECT_FALSE(APInt(8, -1).isNonNegative()); 3020 EXPECT_FALSE(APInt(8, -1).isStrictlyPositive()); 3021 EXPECT_TRUE(APInt(8, -1).isNonPositive()); 3022 3023 EXPECT_FALSE(APInt(8, 0).isNegative()); 3024 EXPECT_TRUE(APInt(8, 0).isNonNegative()); 3025 EXPECT_FALSE(APInt(8, 0).isStrictlyPositive()); 3026 EXPECT_TRUE(APInt(8, 0).isNonPositive()); 3027 3028 EXPECT_FALSE(APInt(8, 1).isNegative()); 3029 EXPECT_TRUE(APInt(8, 1).isNonNegative()); 3030 EXPECT_TRUE(APInt(8, 1).isStrictlyPositive()); 3031 EXPECT_FALSE(APInt(8, 1).isNonPositive()); 3032 } 3033 3034 TEST(APIntTest, ZeroWidth) { 3035 // Zero width Constructors. 3036 auto ZW = APInt::getZeroWidth(); 3037 EXPECT_EQ(0U, ZW.getBitWidth()); 3038 EXPECT_EQ(0U, APInt(0, ArrayRef<uint64_t>({0, 1, 2})).getBitWidth()); 3039 EXPECT_EQ(0U, APInt(0, "0", 10).getBitWidth()); 3040 3041 // Default constructor is single bit wide. 3042 EXPECT_EQ(1U, APInt().getBitWidth()); 3043 3044 // Copy ctor (move is down below). 3045 APInt ZW2(ZW); 3046 EXPECT_EQ(0U, ZW2.getBitWidth()); 3047 // Assignment 3048 ZW = ZW2; 3049 EXPECT_EQ(0U, ZW.getBitWidth()); 3050 3051 // Methods like getLowBitsSet work with zero bits. 3052 EXPECT_EQ(0U, APInt::getLowBitsSet(0, 0).getBitWidth()); 3053 EXPECT_EQ(0U, APInt::getSplat(0, ZW).getBitWidth()); 3054 EXPECT_EQ(0U, APInt(4, 10).extractBits(0, 2).getBitWidth()); 3055 EXPECT_EQ(0U, APInt(4, 10).extractBitsAsZExtValue(0, 2)); 3056 3057 // Logical operators. 3058 ZW |= ZW2; 3059 ZW &= ZW2; 3060 ZW ^= ZW2; 3061 ZW |= 42; // These ignore high bits of the literal. 3062 ZW &= 42; 3063 ZW ^= 42; 3064 EXPECT_EQ(1, ZW.isIntN(0)); 3065 3066 // Modulo Arithmetic. Divide/Rem aren't defined on division by zero, so they 3067 // aren't supported. 3068 ZW += ZW2; 3069 ZW -= ZW2; 3070 ZW *= ZW2; 3071 3072 // Logical Shifts and rotates, the amount must be <= bitwidth. 3073 ZW <<= 0; 3074 ZW.lshrInPlace(0); 3075 (void)ZW.rotl(0); 3076 (void)ZW.rotr(0); 3077 3078 // Comparisons. 3079 EXPECT_EQ(1, ZW == ZW); 3080 EXPECT_EQ(0, ZW != ZW); 3081 EXPECT_EQ(0, ZW.ult(ZW)); 3082 3083 // Mutations. 3084 ZW.setBitsWithWrap(0, 0); 3085 ZW.setBits(0, 0); 3086 ZW.clearAllBits(); 3087 ZW.flipAllBits(); 3088 3089 // Leading, trailing, ctpop, etc 3090 EXPECT_EQ(0U, ZW.countl_zero()); 3091 EXPECT_EQ(0U, ZW.countl_one()); 3092 EXPECT_EQ(0U, ZW.popcount()); 3093 EXPECT_EQ(0U, ZW.reverseBits().getBitWidth()); 3094 EXPECT_EQ(0U, ZW.getHiBits(0).getBitWidth()); 3095 EXPECT_EQ(0U, ZW.getLoBits(0).getBitWidth()); 3096 EXPECT_EQ(0, ZW.zext(4)); 3097 EXPECT_EQ(0U, APInt(4, 3).trunc(0).getBitWidth()); 3098 EXPECT_TRUE(ZW.isAllOnes()); 3099 3100 // Zero extension. 3101 EXPECT_EQ(0U, ZW.getZExtValue()); 3102 3103 SmallString<42> STR; 3104 ZW.toStringUnsigned(STR); 3105 EXPECT_EQ("0", STR); 3106 3107 // Move ctor (keep at the end of the method since moves are destructive). 3108 APInt MZW1(std::move(ZW)); 3109 EXPECT_EQ(0U, MZW1.getBitWidth()); 3110 // Move Assignment 3111 MZW1 = std::move(ZW2); 3112 EXPECT_EQ(0U, MZW1.getBitWidth()); 3113 } 3114 3115 TEST(APIntTest, ScaleBitMask) { 3116 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8), APInt(8, 0x00)); 3117 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8), APInt(8, 0x0F)); 3118 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8), APInt(8, 0xF0)); 3119 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8), APInt(8, 0xFF)); 3120 3121 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4), APInt(4, 0x00)); 3122 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4), APInt(4, 0x0F)); 3123 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4), APInt(4, 0x0E)); 3124 3125 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 8), APInt(8, 0x00)); 3126 3127 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getZero(1024), 4096), 3128 APInt::getZero(4096)); 3129 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getAllOnes(4096), 256), 3130 APInt::getAllOnes(256)); 3131 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getOneBitSet(4096, 32), 256), 3132 APInt::getOneBitSet(256, 2)); 3133 3134 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8, true), APInt(8, 0x00)); 3135 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8, true), APInt(8, 0x0F)); 3136 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8, true), APInt(8, 0xF0)); 3137 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8, true), APInt(8, 0xFF)); 3138 3139 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4, true), APInt(4, 0x00)); 3140 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4, true), APInt(4, 0x0F)); 3141 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4, true), APInt(4, 0x08)); 3142 } 3143 3144 TEST(APIntTest, DenseMap) { 3145 DenseMap<APInt, int> Map; 3146 APInt ZeroWidthInt(0, 0, false); 3147 Map.insert({ZeroWidthInt, 0}); 3148 Map.find(ZeroWidthInt); 3149 } 3150 3151 TEST(APIntTest, TryExt) { 3152 APInt small(32, 42); 3153 APInt large(128, {0xffff, 0xffff}); 3154 ASSERT_TRUE(small.tryZExtValue().has_value()); 3155 ASSERT_TRUE(small.trySExtValue().has_value()); 3156 ASSERT_FALSE(large.tryZExtValue().has_value()); 3157 ASSERT_FALSE(large.trySExtValue().has_value()); 3158 ASSERT_EQ(small.trySExtValue().value_or(41), 42); 3159 ASSERT_EQ(large.trySExtValue().value_or(41), 41); 3160 3161 APInt negOne32(32, 0); 3162 negOne32.setAllBits(); 3163 ASSERT_EQ(negOne32.trySExtValue().value_or(42), -1); 3164 APInt negOne64(64, 0); 3165 negOne64.setAllBits(); 3166 ASSERT_EQ(negOne64.trySExtValue().value_or(42), -1); 3167 APInt negOne128(128, 0); 3168 negOne128.setAllBits(); 3169 ASSERT_EQ(negOne128.trySExtValue().value_or(42), -1); 3170 ASSERT_EQ(42, APInt(128, -1).trySExtValue().value_or(42)); 3171 } 3172 3173 } // end anonymous namespace 3174