1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/ADT/APInt.h" 10 #include "llvm/ADT/ArrayRef.h" 11 #include "llvm/ADT/DenseMap.h" 12 #include "llvm/ADT/SmallString.h" 13 #include "llvm/ADT/Twine.h" 14 #include "llvm/Support/Alignment.h" 15 #include "gtest/gtest.h" 16 #include <array> 17 #include <climits> 18 #include <optional> 19 20 using namespace llvm; 21 22 namespace { 23 24 TEST(APIntTest, ValueInit) { 25 APInt Zero = APInt(); 26 EXPECT_TRUE(!Zero); 27 EXPECT_TRUE(!Zero.zext(64)); 28 EXPECT_TRUE(!Zero.sext(64)); 29 } 30 31 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 32 TEST(APIntTest, ShiftLeftByZero) { 33 APInt One = APInt::getZero(65) + 1; 34 APInt Shl = One.shl(0); 35 EXPECT_TRUE(Shl[0]); 36 EXPECT_FALSE(Shl[1]); 37 } 38 39 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 40 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 41 EXPECT_EQ(neg_one, neg_one.ashr(7)); 42 } 43 44 TEST(APIntTest, i128_NegativeCount) { 45 APInt Minus3(128, static_cast<uint64_t>(-3), true); 46 EXPECT_EQ(126u, Minus3.countl_one()); 47 EXPECT_EQ(-3, Minus3.getSExtValue()); 48 49 APInt Minus1(128, static_cast<uint64_t>(-1), true); 50 EXPECT_EQ(0u, Minus1.countl_zero()); 51 EXPECT_EQ(128u, Minus1.countl_one()); 52 EXPECT_EQ(128u, Minus1.getActiveBits()); 53 EXPECT_EQ(0u, Minus1.countr_zero()); 54 EXPECT_EQ(128u, Minus1.countr_one()); 55 EXPECT_EQ(128u, Minus1.popcount()); 56 EXPECT_EQ(-1, Minus1.getSExtValue()); 57 } 58 59 TEST(APIntTest, i33_Count) { 60 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 61 EXPECT_EQ(0u, i33minus2.countl_zero()); 62 EXPECT_EQ(32u, i33minus2.countl_one()); 63 EXPECT_EQ(33u, i33minus2.getActiveBits()); 64 EXPECT_EQ(1u, i33minus2.countr_zero()); 65 EXPECT_EQ(32u, i33minus2.popcount()); 66 EXPECT_EQ(-2, i33minus2.getSExtValue()); 67 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 68 } 69 70 TEST(APIntTest, i61_Count) { 71 APInt i61(61, 1 << 15); 72 EXPECT_EQ(45u, i61.countl_zero()); 73 EXPECT_EQ(0u, i61.countl_one()); 74 EXPECT_EQ(16u, i61.getActiveBits()); 75 EXPECT_EQ(15u, i61.countr_zero()); 76 EXPECT_EQ(1u, i61.popcount()); 77 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue()); 78 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue()); 79 80 i61.setBits(8, 19); 81 EXPECT_EQ(42u, i61.countl_zero()); 82 EXPECT_EQ(0u, i61.countl_one()); 83 EXPECT_EQ(19u, i61.getActiveBits()); 84 EXPECT_EQ(8u, i61.countr_zero()); 85 EXPECT_EQ(11u, i61.popcount()); 86 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue()); 87 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue()); 88 } 89 90 TEST(APIntTest, i65_Count) { 91 APInt i65(65, 0, true); 92 EXPECT_EQ(65u, i65.countl_zero()); 93 EXPECT_EQ(0u, i65.countl_one()); 94 EXPECT_EQ(0u, i65.getActiveBits()); 95 EXPECT_EQ(1u, i65.getActiveWords()); 96 EXPECT_EQ(65u, i65.countr_zero()); 97 EXPECT_EQ(0u, i65.popcount()); 98 99 APInt i65minus(65, 0, true); 100 i65minus.setBit(64); 101 EXPECT_EQ(0u, i65minus.countl_zero()); 102 EXPECT_EQ(1u, i65minus.countl_one()); 103 EXPECT_EQ(65u, i65minus.getActiveBits()); 104 EXPECT_EQ(64u, i65minus.countr_zero()); 105 EXPECT_EQ(1u, i65minus.popcount()); 106 } 107 108 TEST(APIntTest, i128_PositiveCount) { 109 APInt u128max = APInt::getAllOnes(128); 110 EXPECT_EQ(128u, u128max.countl_one()); 111 EXPECT_EQ(0u, u128max.countl_zero()); 112 EXPECT_EQ(128u, u128max.getActiveBits()); 113 EXPECT_EQ(0u, u128max.countr_zero()); 114 EXPECT_EQ(128u, u128max.countr_one()); 115 EXPECT_EQ(128u, u128max.popcount()); 116 117 APInt u64max(128, static_cast<uint64_t>(-1), false); 118 EXPECT_EQ(64u, u64max.countl_zero()); 119 EXPECT_EQ(0u, u64max.countl_one()); 120 EXPECT_EQ(64u, u64max.getActiveBits()); 121 EXPECT_EQ(0u, u64max.countr_zero()); 122 EXPECT_EQ(64u, u64max.countr_one()); 123 EXPECT_EQ(64u, u64max.popcount()); 124 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 125 126 APInt zero(128, 0, true); 127 EXPECT_EQ(128u, zero.countl_zero()); 128 EXPECT_EQ(0u, zero.countl_one()); 129 EXPECT_EQ(0u, zero.getActiveBits()); 130 EXPECT_EQ(128u, zero.countr_zero()); 131 EXPECT_EQ(0u, zero.countr_one()); 132 EXPECT_EQ(0u, zero.popcount()); 133 EXPECT_EQ(0u, zero.getSExtValue()); 134 EXPECT_EQ(0u, zero.getZExtValue()); 135 136 APInt one(128, 1, true); 137 EXPECT_EQ(127u, one.countl_zero()); 138 EXPECT_EQ(0u, one.countl_one()); 139 EXPECT_EQ(1u, one.getActiveBits()); 140 EXPECT_EQ(0u, one.countr_zero()); 141 EXPECT_EQ(1u, one.countr_one()); 142 EXPECT_EQ(1u, one.popcount()); 143 EXPECT_EQ(1, one.getSExtValue()); 144 EXPECT_EQ(1u, one.getZExtValue()); 145 146 APInt s128(128, 2, true); 147 EXPECT_EQ(126u, s128.countl_zero()); 148 EXPECT_EQ(0u, s128.countl_one()); 149 EXPECT_EQ(2u, s128.getActiveBits()); 150 EXPECT_EQ(1u, s128.countr_zero()); 151 EXPECT_EQ(0u, s128.countr_one()); 152 EXPECT_EQ(1u, s128.popcount()); 153 EXPECT_EQ(2, s128.getSExtValue()); 154 EXPECT_EQ(2u, s128.getZExtValue()); 155 156 // NOP Test 157 s128.setBits(42, 42); 158 EXPECT_EQ(126u, s128.countl_zero()); 159 EXPECT_EQ(0u, s128.countl_one()); 160 EXPECT_EQ(2u, s128.getActiveBits()); 161 EXPECT_EQ(1u, s128.countr_zero()); 162 EXPECT_EQ(0u, s128.countr_one()); 163 EXPECT_EQ(1u, s128.popcount()); 164 EXPECT_EQ(2, s128.getSExtValue()); 165 EXPECT_EQ(2u, s128.getZExtValue()); 166 167 s128.setBits(3, 32); 168 EXPECT_EQ(96u, s128.countl_zero()); 169 EXPECT_EQ(0u, s128.countl_one()); 170 EXPECT_EQ(32u, s128.getActiveBits()); 171 EXPECT_EQ(33u, s128.getSignificantBits()); 172 EXPECT_EQ(1u, s128.countr_zero()); 173 EXPECT_EQ(0u, s128.countr_one()); 174 EXPECT_EQ(30u, s128.popcount()); 175 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 176 177 s128.setBits(62, 128); 178 EXPECT_EQ(0u, s128.countl_zero()); 179 EXPECT_EQ(66u, s128.countl_one()); 180 EXPECT_EQ(128u, s128.getActiveBits()); 181 EXPECT_EQ(63u, s128.getSignificantBits()); 182 EXPECT_EQ(1u, s128.countr_zero()); 183 EXPECT_EQ(0u, s128.countr_one()); 184 EXPECT_EQ(96u, s128.popcount()); 185 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 186 static_cast<uint32_t>((~0u << 3) | 2)), 187 s128.getSExtValue()); 188 } 189 190 TEST(APIntTest, i256) { 191 APInt s256(256, 15, true); 192 EXPECT_EQ(252u, s256.countl_zero()); 193 EXPECT_EQ(0u, s256.countl_one()); 194 EXPECT_EQ(4u, s256.getActiveBits()); 195 EXPECT_EQ(0u, s256.countr_zero()); 196 EXPECT_EQ(4u, s256.countr_one()); 197 EXPECT_EQ(4u, s256.popcount()); 198 EXPECT_EQ(15, s256.getSExtValue()); 199 EXPECT_EQ(15u, s256.getZExtValue()); 200 201 s256.setBits(62, 66); 202 EXPECT_EQ(190u, s256.countl_zero()); 203 EXPECT_EQ(0u, s256.countl_one()); 204 EXPECT_EQ(66u, s256.getActiveBits()); 205 EXPECT_EQ(67u, s256.getSignificantBits()); 206 EXPECT_EQ(0u, s256.countr_zero()); 207 EXPECT_EQ(4u, s256.countr_one()); 208 EXPECT_EQ(8u, s256.popcount()); 209 210 s256.setBits(60, 256); 211 EXPECT_EQ(0u, s256.countl_zero()); 212 EXPECT_EQ(196u, s256.countl_one()); 213 EXPECT_EQ(256u, s256.getActiveBits()); 214 EXPECT_EQ(61u, s256.getSignificantBits()); 215 EXPECT_EQ(0u, s256.countr_zero()); 216 EXPECT_EQ(4u, s256.countr_one()); 217 EXPECT_EQ(200u, s256.popcount()); 218 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 219 } 220 221 TEST(APIntTest, i1) { 222 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 223 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 224 const APInt zero(1, 0); 225 const APInt one(1, 1); 226 const APInt two(1, 2); 227 228 EXPECT_EQ(0, neg_two.getSExtValue()); 229 EXPECT_EQ(-1, neg_one.getSExtValue()); 230 EXPECT_EQ(1u, neg_one.getZExtValue()); 231 EXPECT_EQ(0u, zero.getZExtValue()); 232 EXPECT_EQ(-1, one.getSExtValue()); 233 EXPECT_EQ(1u, one.getZExtValue()); 234 EXPECT_EQ(0u, two.getZExtValue()); 235 EXPECT_EQ(0, two.getSExtValue()); 236 237 // Basic equalities for 1-bit values. 238 EXPECT_EQ(zero, two); 239 EXPECT_EQ(zero, neg_two); 240 EXPECT_EQ(one, neg_one); 241 EXPECT_EQ(two, neg_two); 242 243 // Min/max signed values. 244 EXPECT_TRUE(zero.isMaxSignedValue()); 245 EXPECT_FALSE(one.isMaxSignedValue()); 246 EXPECT_FALSE(zero.isMinSignedValue()); 247 EXPECT_TRUE(one.isMinSignedValue()); 248 249 // Additions. 250 EXPECT_EQ(two, one + one); 251 EXPECT_EQ(zero, neg_one + one); 252 EXPECT_EQ(neg_two, neg_one + neg_one); 253 254 // Subtractions. 255 EXPECT_EQ(neg_two, neg_one - one); 256 EXPECT_EQ(two, one - neg_one); 257 EXPECT_EQ(zero, one - one); 258 259 // And 260 EXPECT_EQ(zero, zero & zero); 261 EXPECT_EQ(zero, one & zero); 262 EXPECT_EQ(zero, zero & one); 263 EXPECT_EQ(one, one & one); 264 EXPECT_EQ(zero, zero & zero); 265 EXPECT_EQ(zero, neg_one & zero); 266 EXPECT_EQ(zero, zero & neg_one); 267 EXPECT_EQ(neg_one, neg_one & neg_one); 268 269 // Or 270 EXPECT_EQ(zero, zero | zero); 271 EXPECT_EQ(one, one | zero); 272 EXPECT_EQ(one, zero | one); 273 EXPECT_EQ(one, one | one); 274 EXPECT_EQ(zero, zero | zero); 275 EXPECT_EQ(neg_one, neg_one | zero); 276 EXPECT_EQ(neg_one, zero | neg_one); 277 EXPECT_EQ(neg_one, neg_one | neg_one); 278 279 // Xor 280 EXPECT_EQ(zero, zero ^ zero); 281 EXPECT_EQ(one, one ^ zero); 282 EXPECT_EQ(one, zero ^ one); 283 EXPECT_EQ(zero, one ^ one); 284 EXPECT_EQ(zero, zero ^ zero); 285 EXPECT_EQ(neg_one, neg_one ^ zero); 286 EXPECT_EQ(neg_one, zero ^ neg_one); 287 EXPECT_EQ(zero, neg_one ^ neg_one); 288 289 // Shifts. 290 EXPECT_EQ(zero, one << one); 291 EXPECT_EQ(one, one << zero); 292 EXPECT_EQ(zero, one.shl(1)); 293 EXPECT_EQ(one, one.shl(0)); 294 EXPECT_EQ(zero, one.lshr(1)); 295 EXPECT_EQ(one, one.ashr(1)); 296 297 // Rotates. 298 EXPECT_EQ(one, one.rotl(0)); 299 EXPECT_EQ(one, one.rotl(1)); 300 EXPECT_EQ(one, one.rotr(0)); 301 EXPECT_EQ(one, one.rotr(1)); 302 303 // Multiplies. 304 EXPECT_EQ(neg_one, neg_one * one); 305 EXPECT_EQ(neg_one, one * neg_one); 306 EXPECT_EQ(one, neg_one * neg_one); 307 EXPECT_EQ(one, one * one); 308 309 // Divides. 310 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 311 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 312 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 313 EXPECT_EQ(one, one.sdiv(one)); 314 315 EXPECT_EQ(neg_one, one.udiv(neg_one)); 316 EXPECT_EQ(neg_one, neg_one.udiv(one)); 317 EXPECT_EQ(one, neg_one.udiv(neg_one)); 318 EXPECT_EQ(one, one.udiv(one)); 319 320 // Remainders. 321 EXPECT_EQ(zero, neg_one.srem(one)); 322 EXPECT_EQ(zero, neg_one.urem(one)); 323 EXPECT_EQ(zero, one.srem(neg_one)); 324 325 // sdivrem 326 { 327 APInt q(8, 0); 328 APInt r(8, 0); 329 APInt one(8, 1); 330 APInt two(8, 2); 331 APInt nine(8, 9); 332 APInt four(8, 4); 333 334 EXPECT_EQ(nine.srem(two), one); 335 EXPECT_EQ(nine.srem(-two), one); 336 EXPECT_EQ((-nine).srem(two), -one); 337 EXPECT_EQ((-nine).srem(-two), -one); 338 339 APInt::sdivrem(nine, two, q, r); 340 EXPECT_EQ(four, q); 341 EXPECT_EQ(one, r); 342 APInt::sdivrem(-nine, two, q, r); 343 EXPECT_EQ(-four, q); 344 EXPECT_EQ(-one, r); 345 APInt::sdivrem(nine, -two, q, r); 346 EXPECT_EQ(-four, q); 347 EXPECT_EQ(one, r); 348 APInt::sdivrem(-nine, -two, q, r); 349 EXPECT_EQ(four, q); 350 EXPECT_EQ(-one, r); 351 } 352 } 353 354 TEST(APIntTest, compare) { 355 std::array<APInt, 5> testVals{{ 356 APInt{16, 2}, 357 APInt{16, 1}, 358 APInt{16, 0}, 359 APInt{16, (uint64_t)-1, true}, 360 APInt{16, (uint64_t)-2, true}, 361 }}; 362 363 for (auto &arg1 : testVals) 364 for (auto &arg2 : testVals) { 365 auto uv1 = arg1.getZExtValue(); 366 auto uv2 = arg2.getZExtValue(); 367 auto sv1 = arg1.getSExtValue(); 368 auto sv2 = arg2.getSExtValue(); 369 370 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 371 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 372 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 373 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 374 375 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 376 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 377 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 378 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 379 380 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 381 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 382 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 383 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 384 385 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 386 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 387 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 388 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 389 } 390 } 391 392 TEST(APIntTest, compareWithRawIntegers) { 393 EXPECT_TRUE(!APInt(8, 1).uge(256)); 394 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 395 EXPECT_TRUE( APInt(8, 1).ule(256)); 396 EXPECT_TRUE( APInt(8, 1).ult(256)); 397 EXPECT_TRUE(!APInt(8, 1).sge(256)); 398 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 399 EXPECT_TRUE( APInt(8, 1).sle(256)); 400 EXPECT_TRUE( APInt(8, 1).slt(256)); 401 EXPECT_TRUE(!(APInt(8, 0) == 256)); 402 EXPECT_TRUE( APInt(8, 0) != 256); 403 EXPECT_TRUE(!(APInt(8, 1) == 256)); 404 EXPECT_TRUE( APInt(8, 1) != 256); 405 406 auto uint64max = UINT64_MAX; 407 auto int64max = INT64_MAX; 408 auto int64min = INT64_MIN; 409 410 auto u64 = APInt{128, uint64max}; 411 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 412 auto big = u64 + 1; 413 414 EXPECT_TRUE( u64.uge(uint64max)); 415 EXPECT_TRUE(!u64.ugt(uint64max)); 416 EXPECT_TRUE( u64.ule(uint64max)); 417 EXPECT_TRUE(!u64.ult(uint64max)); 418 EXPECT_TRUE( u64.sge(int64max)); 419 EXPECT_TRUE( u64.sgt(int64max)); 420 EXPECT_TRUE(!u64.sle(int64max)); 421 EXPECT_TRUE(!u64.slt(int64max)); 422 EXPECT_TRUE( u64.sge(int64min)); 423 EXPECT_TRUE( u64.sgt(int64min)); 424 EXPECT_TRUE(!u64.sle(int64min)); 425 EXPECT_TRUE(!u64.slt(int64min)); 426 427 EXPECT_TRUE(u64 == uint64max); 428 EXPECT_TRUE(u64 != int64max); 429 EXPECT_TRUE(u64 != int64min); 430 431 EXPECT_TRUE(!s64.uge(uint64max)); 432 EXPECT_TRUE(!s64.ugt(uint64max)); 433 EXPECT_TRUE( s64.ule(uint64max)); 434 EXPECT_TRUE( s64.ult(uint64max)); 435 EXPECT_TRUE( s64.sge(int64max)); 436 EXPECT_TRUE(!s64.sgt(int64max)); 437 EXPECT_TRUE( s64.sle(int64max)); 438 EXPECT_TRUE(!s64.slt(int64max)); 439 EXPECT_TRUE( s64.sge(int64min)); 440 EXPECT_TRUE( s64.sgt(int64min)); 441 EXPECT_TRUE(!s64.sle(int64min)); 442 EXPECT_TRUE(!s64.slt(int64min)); 443 444 EXPECT_TRUE(s64 != uint64max); 445 EXPECT_TRUE(s64 == int64max); 446 EXPECT_TRUE(s64 != int64min); 447 448 EXPECT_TRUE( big.uge(uint64max)); 449 EXPECT_TRUE( big.ugt(uint64max)); 450 EXPECT_TRUE(!big.ule(uint64max)); 451 EXPECT_TRUE(!big.ult(uint64max)); 452 EXPECT_TRUE( big.sge(int64max)); 453 EXPECT_TRUE( big.sgt(int64max)); 454 EXPECT_TRUE(!big.sle(int64max)); 455 EXPECT_TRUE(!big.slt(int64max)); 456 EXPECT_TRUE( big.sge(int64min)); 457 EXPECT_TRUE( big.sgt(int64min)); 458 EXPECT_TRUE(!big.sle(int64min)); 459 EXPECT_TRUE(!big.slt(int64min)); 460 461 EXPECT_TRUE(big != uint64max); 462 EXPECT_TRUE(big != int64max); 463 EXPECT_TRUE(big != int64min); 464 } 465 466 TEST(APIntTest, compareWithInt64Min) { 467 int64_t edge = INT64_MIN; 468 int64_t edgeP1 = edge + 1; 469 int64_t edgeM1 = INT64_MAX; 470 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 471 472 EXPECT_TRUE(!a.slt(edge)); 473 EXPECT_TRUE( a.sle(edge)); 474 EXPECT_TRUE(!a.sgt(edge)); 475 EXPECT_TRUE( a.sge(edge)); 476 EXPECT_TRUE( a.slt(edgeP1)); 477 EXPECT_TRUE( a.sle(edgeP1)); 478 EXPECT_TRUE(!a.sgt(edgeP1)); 479 EXPECT_TRUE(!a.sge(edgeP1)); 480 EXPECT_TRUE( a.slt(edgeM1)); 481 EXPECT_TRUE( a.sle(edgeM1)); 482 EXPECT_TRUE(!a.sgt(edgeM1)); 483 EXPECT_TRUE(!a.sge(edgeM1)); 484 } 485 486 TEST(APIntTest, compareWithHalfInt64Max) { 487 uint64_t edge = 0x4000000000000000; 488 uint64_t edgeP1 = edge + 1; 489 uint64_t edgeM1 = edge - 1; 490 auto a = APInt{64, edge}; 491 492 EXPECT_TRUE(!a.ult(edge)); 493 EXPECT_TRUE( a.ule(edge)); 494 EXPECT_TRUE(!a.ugt(edge)); 495 EXPECT_TRUE( a.uge(edge)); 496 EXPECT_TRUE( a.ult(edgeP1)); 497 EXPECT_TRUE( a.ule(edgeP1)); 498 EXPECT_TRUE(!a.ugt(edgeP1)); 499 EXPECT_TRUE(!a.uge(edgeP1)); 500 EXPECT_TRUE(!a.ult(edgeM1)); 501 EXPECT_TRUE(!a.ule(edgeM1)); 502 EXPECT_TRUE( a.ugt(edgeM1)); 503 EXPECT_TRUE( a.uge(edgeM1)); 504 505 EXPECT_TRUE(!a.slt(edge)); 506 EXPECT_TRUE( a.sle(edge)); 507 EXPECT_TRUE(!a.sgt(edge)); 508 EXPECT_TRUE( a.sge(edge)); 509 EXPECT_TRUE( a.slt(edgeP1)); 510 EXPECT_TRUE( a.sle(edgeP1)); 511 EXPECT_TRUE(!a.sgt(edgeP1)); 512 EXPECT_TRUE(!a.sge(edgeP1)); 513 EXPECT_TRUE(!a.slt(edgeM1)); 514 EXPECT_TRUE(!a.sle(edgeM1)); 515 EXPECT_TRUE( a.sgt(edgeM1)); 516 EXPECT_TRUE( a.sge(edgeM1)); 517 } 518 519 TEST(APIntTest, compareLargeIntegers) { 520 // Make sure all the combinations of signed comparisons work with big ints. 521 auto One = APInt{128, static_cast<uint64_t>(1), true}; 522 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 523 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 524 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 525 526 EXPECT_TRUE(!One.slt(One)); 527 EXPECT_TRUE(!Two.slt(One)); 528 EXPECT_TRUE(MinusOne.slt(One)); 529 EXPECT_TRUE(MinusTwo.slt(One)); 530 531 EXPECT_TRUE(One.slt(Two)); 532 EXPECT_TRUE(!Two.slt(Two)); 533 EXPECT_TRUE(MinusOne.slt(Two)); 534 EXPECT_TRUE(MinusTwo.slt(Two)); 535 536 EXPECT_TRUE(!One.slt(MinusOne)); 537 EXPECT_TRUE(!Two.slt(MinusOne)); 538 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 539 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 540 541 EXPECT_TRUE(!One.slt(MinusTwo)); 542 EXPECT_TRUE(!Two.slt(MinusTwo)); 543 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 544 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 545 } 546 547 TEST(APIntTest, binaryOpsWithRawIntegers) { 548 // Single word check. 549 uint64_t E1 = 0x2CA7F46BF6569915ULL; 550 APInt A1(64, E1); 551 552 EXPECT_EQ(A1 & E1, E1); 553 EXPECT_EQ(A1 & 0, 0); 554 EXPECT_EQ(A1 & 1, 1); 555 EXPECT_EQ(A1 & 5, 5); 556 EXPECT_EQ(A1 & UINT64_MAX, E1); 557 558 EXPECT_EQ(A1 | E1, E1); 559 EXPECT_EQ(A1 | 0, E1); 560 EXPECT_EQ(A1 | 1, E1); 561 EXPECT_EQ(A1 | 2, E1 | 2); 562 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 563 564 EXPECT_EQ(A1 ^ E1, 0); 565 EXPECT_EQ(A1 ^ 0, E1); 566 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 567 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 568 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 569 570 // Multiword check. 571 uint64_t N = 0xEB6EB136591CBA21ULL; 572 APInt::WordType E2[4] = { 573 N, 574 0x7B9358BD6A33F10AULL, 575 0x7E7FFA5EADD8846ULL, 576 0x305F341CA00B613DULL 577 }; 578 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 579 580 EXPECT_EQ(A2 & N, N); 581 EXPECT_EQ(A2 & 0, 0); 582 EXPECT_EQ(A2 & 1, 1); 583 EXPECT_EQ(A2 & 5, 1); 584 EXPECT_EQ(A2 & UINT64_MAX, N); 585 586 EXPECT_EQ(A2 | N, A2); 587 EXPECT_EQ(A2 | 0, A2); 588 EXPECT_EQ(A2 | 1, A2); 589 EXPECT_EQ(A2 | 2, A2 + 2); 590 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 591 592 EXPECT_EQ(A2 ^ N, A2 - N); 593 EXPECT_EQ(A2 ^ 0, A2); 594 EXPECT_EQ(A2 ^ 1, A2 - 1); 595 EXPECT_EQ(A2 ^ 7, A2 + 5); 596 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 597 } 598 599 TEST(APIntTest, rvalue_arithmetic) { 600 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 601 602 // Lamdba to return an APInt by value, but also provide the raw value of the 603 // allocated data. 604 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 605 APInt V(129, HexString, 16); 606 RawData = V.getRawData(); 607 return V; 608 }; 609 610 APInt One(129, "1", 16); 611 APInt Two(129, "2", 16); 612 APInt Three(129, "3", 16); 613 APInt MinusOne = -One; 614 615 const uint64_t *RawDataL = nullptr; 616 const uint64_t *RawDataR = nullptr; 617 618 { 619 // 1 + 1 = 2 620 APInt AddLL = One + One; 621 EXPECT_EQ(AddLL, Two); 622 623 APInt AddLR = One + getRValue("1", RawDataR); 624 EXPECT_EQ(AddLR, Two); 625 EXPECT_EQ(AddLR.getRawData(), RawDataR); 626 627 APInt AddRL = getRValue("1", RawDataL) + One; 628 EXPECT_EQ(AddRL, Two); 629 EXPECT_EQ(AddRL.getRawData(), RawDataL); 630 631 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 632 EXPECT_EQ(AddRR, Two); 633 EXPECT_EQ(AddRR.getRawData(), RawDataR); 634 635 // LValue's and constants 636 APInt AddLK = One + 1; 637 EXPECT_EQ(AddLK, Two); 638 639 APInt AddKL = 1 + One; 640 EXPECT_EQ(AddKL, Two); 641 642 // RValue's and constants 643 APInt AddRK = getRValue("1", RawDataL) + 1; 644 EXPECT_EQ(AddRK, Two); 645 EXPECT_EQ(AddRK.getRawData(), RawDataL); 646 647 APInt AddKR = 1 + getRValue("1", RawDataR); 648 EXPECT_EQ(AddKR, Two); 649 EXPECT_EQ(AddKR.getRawData(), RawDataR); 650 } 651 652 { 653 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 654 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 655 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 656 657 APInt AddLL = AllOnes + Two; 658 EXPECT_EQ(AddLL, HighOneLowOne); 659 660 APInt AddLR = AllOnes + getRValue("2", RawDataR); 661 EXPECT_EQ(AddLR, HighOneLowOne); 662 EXPECT_EQ(AddLR.getRawData(), RawDataR); 663 664 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 665 EXPECT_EQ(AddRL, HighOneLowOne); 666 EXPECT_EQ(AddRL.getRawData(), RawDataL); 667 668 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 669 getRValue("2", RawDataR); 670 EXPECT_EQ(AddRR, HighOneLowOne); 671 EXPECT_EQ(AddRR.getRawData(), RawDataR); 672 673 // LValue's and constants 674 APInt AddLK = AllOnes + 2; 675 EXPECT_EQ(AddLK, HighOneLowOne); 676 677 APInt AddKL = 2 + AllOnes; 678 EXPECT_EQ(AddKL, HighOneLowOne); 679 680 // RValue's and constants 681 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 682 EXPECT_EQ(AddRK, HighOneLowOne); 683 EXPECT_EQ(AddRK.getRawData(), RawDataL); 684 685 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 686 EXPECT_EQ(AddKR, HighOneLowOne); 687 EXPECT_EQ(AddKR.getRawData(), RawDataR); 688 } 689 690 { 691 // 2 - 1 = 1 692 APInt SubLL = Two - One; 693 EXPECT_EQ(SubLL, One); 694 695 APInt SubLR = Two - getRValue("1", RawDataR); 696 EXPECT_EQ(SubLR, One); 697 EXPECT_EQ(SubLR.getRawData(), RawDataR); 698 699 APInt SubRL = getRValue("2", RawDataL) - One; 700 EXPECT_EQ(SubRL, One); 701 EXPECT_EQ(SubRL.getRawData(), RawDataL); 702 703 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 704 EXPECT_EQ(SubRR, One); 705 EXPECT_EQ(SubRR.getRawData(), RawDataR); 706 707 // LValue's and constants 708 APInt SubLK = Two - 1; 709 EXPECT_EQ(SubLK, One); 710 711 APInt SubKL = 2 - One; 712 EXPECT_EQ(SubKL, One); 713 714 // RValue's and constants 715 APInt SubRK = getRValue("2", RawDataL) - 1; 716 EXPECT_EQ(SubRK, One); 717 EXPECT_EQ(SubRK.getRawData(), RawDataL); 718 719 APInt SubKR = 2 - getRValue("1", RawDataR); 720 EXPECT_EQ(SubKR, One); 721 EXPECT_EQ(SubKR.getRawData(), RawDataR); 722 } 723 724 { 725 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 726 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 727 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 728 729 APInt SubLL = HighOneLowOne - AllOnes; 730 EXPECT_EQ(SubLL, Two); 731 732 APInt SubLR = HighOneLowOne - 733 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 734 EXPECT_EQ(SubLR, Two); 735 EXPECT_EQ(SubLR.getRawData(), RawDataR); 736 737 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 738 AllOnes; 739 EXPECT_EQ(SubRL, Two); 740 EXPECT_EQ(SubRL.getRawData(), RawDataL); 741 742 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 743 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 744 EXPECT_EQ(SubRR, Two); 745 EXPECT_EQ(SubRR.getRawData(), RawDataR); 746 747 // LValue's and constants 748 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 749 APInt SubLK = HighOneLowOne - 2; 750 EXPECT_EQ(SubLK, AllOnes); 751 752 // 2 - (-1) = 3 753 APInt SubKL = 2 - MinusOne; 754 EXPECT_EQ(SubKL, Three); 755 756 // RValue's and constants 757 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 758 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 759 EXPECT_EQ(SubRK, AllOnes); 760 EXPECT_EQ(SubRK.getRawData(), RawDataL); 761 762 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 763 EXPECT_EQ(SubKR, Three); 764 EXPECT_EQ(SubKR.getRawData(), RawDataR); 765 } 766 } 767 768 TEST(APIntTest, rvalue_bitwise) { 769 // Test all combinations of lvalue/rvalue lhs/rhs of and/or/xor 770 771 // Lamdba to return an APInt by value, but also provide the raw value of the 772 // allocated data. 773 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 774 APInt V(129, HexString, 16); 775 RawData = V.getRawData(); 776 return V; 777 }; 778 779 APInt Ten(129, "A", 16); 780 APInt Twelve(129, "C", 16); 781 782 const uint64_t *RawDataL = nullptr; 783 const uint64_t *RawDataR = nullptr; 784 785 { 786 // 12 & 10 = 8 787 APInt AndLL = Ten & Twelve; 788 EXPECT_EQ(AndLL, 0x8); 789 790 APInt AndLR = Ten & getRValue("C", RawDataR); 791 EXPECT_EQ(AndLR, 0x8); 792 EXPECT_EQ(AndLR.getRawData(), RawDataR); 793 794 APInt AndRL = getRValue("A", RawDataL) & Twelve; 795 EXPECT_EQ(AndRL, 0x8); 796 EXPECT_EQ(AndRL.getRawData(), RawDataL); 797 798 APInt AndRR = getRValue("A", RawDataL) & getRValue("C", RawDataR); 799 EXPECT_EQ(AndRR, 0x8); 800 EXPECT_EQ(AndRR.getRawData(), RawDataR); 801 802 // LValue's and constants 803 APInt AndLK = Ten & 0xc; 804 EXPECT_EQ(AndLK, 0x8); 805 806 APInt AndKL = 0xa & Twelve; 807 EXPECT_EQ(AndKL, 0x8); 808 809 // RValue's and constants 810 APInt AndRK = getRValue("A", RawDataL) & 0xc; 811 EXPECT_EQ(AndRK, 0x8); 812 EXPECT_EQ(AndRK.getRawData(), RawDataL); 813 814 APInt AndKR = 0xa & getRValue("C", RawDataR); 815 EXPECT_EQ(AndKR, 0x8); 816 EXPECT_EQ(AndKR.getRawData(), RawDataR); 817 } 818 819 { 820 // 12 | 10 = 14 821 APInt OrLL = Ten | Twelve; 822 EXPECT_EQ(OrLL, 0xe); 823 824 APInt OrLR = Ten | getRValue("C", RawDataR); 825 EXPECT_EQ(OrLR, 0xe); 826 EXPECT_EQ(OrLR.getRawData(), RawDataR); 827 828 APInt OrRL = getRValue("A", RawDataL) | Twelve; 829 EXPECT_EQ(OrRL, 0xe); 830 EXPECT_EQ(OrRL.getRawData(), RawDataL); 831 832 APInt OrRR = getRValue("A", RawDataL) | getRValue("C", RawDataR); 833 EXPECT_EQ(OrRR, 0xe); 834 EXPECT_EQ(OrRR.getRawData(), RawDataR); 835 836 // LValue's and constants 837 APInt OrLK = Ten | 0xc; 838 EXPECT_EQ(OrLK, 0xe); 839 840 APInt OrKL = 0xa | Twelve; 841 EXPECT_EQ(OrKL, 0xe); 842 843 // RValue's and constants 844 APInt OrRK = getRValue("A", RawDataL) | 0xc; 845 EXPECT_EQ(OrRK, 0xe); 846 EXPECT_EQ(OrRK.getRawData(), RawDataL); 847 848 APInt OrKR = 0xa | getRValue("C", RawDataR); 849 EXPECT_EQ(OrKR, 0xe); 850 EXPECT_EQ(OrKR.getRawData(), RawDataR); 851 } 852 853 { 854 // 12 ^ 10 = 6 855 APInt XorLL = Ten ^ Twelve; 856 EXPECT_EQ(XorLL, 0x6); 857 858 APInt XorLR = Ten ^ getRValue("C", RawDataR); 859 EXPECT_EQ(XorLR, 0x6); 860 EXPECT_EQ(XorLR.getRawData(), RawDataR); 861 862 APInt XorRL = getRValue("A", RawDataL) ^ Twelve; 863 EXPECT_EQ(XorRL, 0x6); 864 EXPECT_EQ(XorRL.getRawData(), RawDataL); 865 866 APInt XorRR = getRValue("A", RawDataL) ^ getRValue("C", RawDataR); 867 EXPECT_EQ(XorRR, 0x6); 868 EXPECT_EQ(XorRR.getRawData(), RawDataR); 869 870 // LValue's and constants 871 APInt XorLK = Ten ^ 0xc; 872 EXPECT_EQ(XorLK, 0x6); 873 874 APInt XorKL = 0xa ^ Twelve; 875 EXPECT_EQ(XorKL, 0x6); 876 877 // RValue's and constants 878 APInt XorRK = getRValue("A", RawDataL) ^ 0xc; 879 EXPECT_EQ(XorRK, 0x6); 880 EXPECT_EQ(XorRK.getRawData(), RawDataL); 881 882 APInt XorKR = 0xa ^ getRValue("C", RawDataR); 883 EXPECT_EQ(XorKR, 0x6); 884 EXPECT_EQ(XorKR.getRawData(), RawDataR); 885 } 886 } 887 888 TEST(APIntTest, rvalue_invert) { 889 // Lamdba to return an APInt by value, but also provide the raw value of the 890 // allocated data. 891 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 892 APInt V(129, HexString, 16); 893 RawData = V.getRawData(); 894 return V; 895 }; 896 897 APInt One(129, 1); 898 APInt NegativeTwo(129, -2ULL, true); 899 900 const uint64_t *RawData = nullptr; 901 902 { 903 // ~1 = -2 904 APInt NegL = ~One; 905 EXPECT_EQ(NegL, NegativeTwo); 906 907 APInt NegR = ~getRValue("1", RawData); 908 EXPECT_EQ(NegR, NegativeTwo); 909 EXPECT_EQ(NegR.getRawData(), RawData); 910 } 911 } 912 913 // Tests different div/rem varaints using scheme (a * b + c) / a 914 void testDiv(APInt a, APInt b, APInt c) { 915 ASSERT_TRUE(a.uge(b)); // Must: a >= b 916 ASSERT_TRUE(a.ugt(c)); // Must: a > c 917 918 auto p = a * b + c; 919 920 auto q = p.udiv(a); 921 auto r = p.urem(a); 922 EXPECT_EQ(b, q); 923 EXPECT_EQ(c, r); 924 APInt::udivrem(p, a, q, r); 925 EXPECT_EQ(b, q); 926 EXPECT_EQ(c, r); 927 q = p.sdiv(a); 928 r = p.srem(a); 929 EXPECT_EQ(b, q); 930 EXPECT_EQ(c, r); 931 APInt::sdivrem(p, a, q, r); 932 EXPECT_EQ(b, q); 933 EXPECT_EQ(c, r); 934 935 if (b.ugt(c)) { // Test also symmetric case 936 q = p.udiv(b); 937 r = p.urem(b); 938 EXPECT_EQ(a, q); 939 EXPECT_EQ(c, r); 940 APInt::udivrem(p, b, q, r); 941 EXPECT_EQ(a, q); 942 EXPECT_EQ(c, r); 943 q = p.sdiv(b); 944 r = p.srem(b); 945 EXPECT_EQ(a, q); 946 EXPECT_EQ(c, r); 947 APInt::sdivrem(p, b, q, r); 948 EXPECT_EQ(a, q); 949 EXPECT_EQ(c, r); 950 } 951 } 952 953 TEST(APIntTest, divrem_big1) { 954 // Tests KnuthDiv rare step D6 955 testDiv({256, "1ffffffffffffffff", 16}, 956 {256, "1ffffffffffffffff", 16}, 957 {256, 0}); 958 } 959 960 TEST(APIntTest, divrem_big2) { 961 // Tests KnuthDiv rare step D6 962 testDiv({1024, "112233ceff" 963 "cecece000000ffffffffffffffffffff" 964 "ffffffffffffffffffffffffffffffff" 965 "ffffffffffffffffffffffffffffffff" 966 "ffffffffffffffffffffffffffffff33", 16}, 967 {1024, "111111ffffffffffffffff" 968 "ffffffffffffffffffffffffffffffff" 969 "fffffffffffffffffffffffffffffccf" 970 "ffffffffffffffffffffffffffffff00", 16}, 971 {1024, 7919}); 972 } 973 974 TEST(APIntTest, divrem_big3) { 975 // Tests KnuthDiv case without shift 976 testDiv({256, "80000001ffffffffffffffff", 16}, 977 {256, "ffffffffffffff0000000", 16}, 978 {256, 4219}); 979 } 980 981 TEST(APIntTest, divrem_big4) { 982 // Tests heap allocation in divide() enfoced by huge numbers 983 testDiv(APInt{4096, 5}.shl(2001), 984 APInt{4096, 1}.shl(2000), 985 APInt{4096, 4219*13}); 986 } 987 988 TEST(APIntTest, divrem_big5) { 989 // Tests one word divisor case of divide() 990 testDiv(APInt{1024, 19}.shl(811), 991 APInt{1024, 4356013}, // one word 992 APInt{1024, 1}); 993 } 994 995 TEST(APIntTest, divrem_big6) { 996 // Tests some rare "borrow" cases in D4 step 997 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 998 APInt{512, "10000000000000001000000000000001", 16}, 999 APInt{512, "10000000000000000000000000000000", 16}); 1000 } 1001 1002 TEST(APIntTest, divrem_big7) { 1003 // Yet another test for KnuthDiv rare step D6. 1004 testDiv({224, "800000008000000200000005", 16}, 1005 {224, "fffffffd", 16}, 1006 {224, "80000000800000010000000f", 16}); 1007 } 1008 1009 void testDiv(APInt a, uint64_t b, APInt c) { 1010 auto p = a * b + c; 1011 1012 APInt q; 1013 uint64_t r; 1014 // Unsigned division will only work if our original number wasn't negative. 1015 if (!a.isNegative()) { 1016 q = p.udiv(b); 1017 r = p.urem(b); 1018 EXPECT_EQ(a, q); 1019 EXPECT_EQ(c, r); 1020 APInt::udivrem(p, b, q, r); 1021 EXPECT_EQ(a, q); 1022 EXPECT_EQ(c, r); 1023 } 1024 q = p.sdiv(b); 1025 r = p.srem(b); 1026 EXPECT_EQ(a, q); 1027 if (c.isNegative()) 1028 EXPECT_EQ(-c, -r); // Need to negate so the uint64_t compare will work. 1029 else 1030 EXPECT_EQ(c, r); 1031 int64_t sr; 1032 APInt::sdivrem(p, b, q, sr); 1033 EXPECT_EQ(a, q); 1034 if (c.isNegative()) 1035 EXPECT_EQ(-c, -sr); // Need to negate so the uint64_t compare will work. 1036 else 1037 EXPECT_EQ(c, sr); 1038 } 1039 1040 TEST(APIntTest, divremuint) { 1041 // Single word APInt 1042 testDiv(APInt{64, 9}, 1043 2, 1044 APInt{64, 1}); 1045 1046 // Single word negative APInt 1047 testDiv(-APInt{64, 9}, 1048 2, 1049 -APInt{64, 1}); 1050 1051 // Multiword dividend with only one significant word. 1052 testDiv(APInt{256, 9}, 1053 2, 1054 APInt{256, 1}); 1055 1056 // Negative dividend. 1057 testDiv(-APInt{256, 9}, 1058 2, 1059 -APInt{256, 1}); 1060 1061 // Multiword dividend 1062 testDiv(APInt{1024, 19}.shl(811), 1063 4356013, // one word 1064 APInt{1024, 1}); 1065 } 1066 1067 TEST(APIntTest, divrem_simple) { 1068 // Test simple cases. 1069 APInt A(65, 2), B(65, 2); 1070 APInt Q, R; 1071 1072 // X / X 1073 APInt::sdivrem(A, B, Q, R); 1074 EXPECT_EQ(Q, APInt(65, 1)); 1075 EXPECT_EQ(R, APInt(65, 0)); 1076 APInt::udivrem(A, B, Q, R); 1077 EXPECT_EQ(Q, APInt(65, 1)); 1078 EXPECT_EQ(R, APInt(65, 0)); 1079 1080 // 0 / X 1081 APInt O(65, 0); 1082 APInt::sdivrem(O, B, Q, R); 1083 EXPECT_EQ(Q, APInt(65, 0)); 1084 EXPECT_EQ(R, APInt(65, 0)); 1085 APInt::udivrem(O, B, Q, R); 1086 EXPECT_EQ(Q, APInt(65, 0)); 1087 EXPECT_EQ(R, APInt(65, 0)); 1088 1089 // X / 1 1090 APInt I(65, 1); 1091 APInt::sdivrem(A, I, Q, R); 1092 EXPECT_EQ(Q, A); 1093 EXPECT_EQ(R, APInt(65, 0)); 1094 APInt::udivrem(A, I, Q, R); 1095 EXPECT_EQ(Q, A); 1096 EXPECT_EQ(R, APInt(65, 0)); 1097 } 1098 1099 TEST(APIntTest, fromString) { 1100 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 1101 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 1102 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 1103 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 1104 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 1105 1106 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 1107 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 1108 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 1109 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 1110 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 1111 1112 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 1113 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 1114 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 1115 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 1116 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 1117 1118 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 1119 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 1120 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 1121 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 1122 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 1123 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 1124 1125 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 1126 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 1127 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 1128 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 1129 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 1130 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 1131 1132 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 1133 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 1134 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 1135 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 1136 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 1137 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 1138 1139 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 1140 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 1141 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 1142 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 1143 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 1144 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 1145 1146 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 1147 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 1148 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 1149 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 1150 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 1151 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 1152 1153 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 1154 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 1155 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 1156 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 1157 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 1158 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 1159 1160 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 1161 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 1162 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 1163 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 1164 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 1165 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 1166 1167 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 1168 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 1169 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 1170 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 1171 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 1172 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 1173 1174 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 1175 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 1176 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 1177 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 1178 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 1179 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 1180 } 1181 1182 TEST(APIntTest, SaturatingMath) { 1183 APInt AP_10 = APInt(8, 10); 1184 APInt AP_42 = APInt(8, 42); 1185 APInt AP_100 = APInt(8, 100); 1186 APInt AP_200 = APInt(8, 200); 1187 1188 EXPECT_EQ(APInt(8, 100), AP_100.truncUSat(8)); 1189 EXPECT_EQ(APInt(7, 100), AP_100.truncUSat(7)); 1190 EXPECT_EQ(APInt(6, 63), AP_100.truncUSat(6)); 1191 EXPECT_EQ(APInt(5, 31), AP_100.truncUSat(5)); 1192 1193 EXPECT_EQ(APInt(8, 200), AP_200.truncUSat(8)); 1194 EXPECT_EQ(APInt(7, 127), AP_200.truncUSat(7)); 1195 EXPECT_EQ(APInt(6, 63), AP_200.truncUSat(6)); 1196 EXPECT_EQ(APInt(5, 31), AP_200.truncUSat(5)); 1197 1198 EXPECT_EQ(APInt(8, 42), AP_42.truncSSat(8)); 1199 EXPECT_EQ(APInt(7, 42), AP_42.truncSSat(7)); 1200 EXPECT_EQ(APInt(6, 31), AP_42.truncSSat(6)); 1201 EXPECT_EQ(APInt(5, 15), AP_42.truncSSat(5)); 1202 1203 EXPECT_EQ(APInt(8, -56), AP_200.truncSSat(8)); 1204 EXPECT_EQ(APInt(7, -56), AP_200.truncSSat(7)); 1205 EXPECT_EQ(APInt(6, -32), AP_200.truncSSat(6)); 1206 EXPECT_EQ(APInt(5, -16), AP_200.truncSSat(5)); 1207 1208 EXPECT_EQ(APInt(8, 200), AP_100.uadd_sat(AP_100)); 1209 EXPECT_EQ(APInt(8, 255), AP_100.uadd_sat(AP_200)); 1210 EXPECT_EQ(APInt(8, 255), APInt(8, 255).uadd_sat(APInt(8, 255))); 1211 1212 EXPECT_EQ(APInt(8, 110), AP_10.sadd_sat(AP_100)); 1213 EXPECT_EQ(APInt(8, 127), AP_100.sadd_sat(AP_100)); 1214 EXPECT_EQ(APInt(8, -128), (-AP_100).sadd_sat(-AP_100)); 1215 EXPECT_EQ(APInt(8, -128), APInt(8, -128).sadd_sat(APInt(8, -128))); 1216 1217 EXPECT_EQ(APInt(8, 90), AP_100.usub_sat(AP_10)); 1218 EXPECT_EQ(APInt(8, 0), AP_100.usub_sat(AP_200)); 1219 EXPECT_EQ(APInt(8, 0), APInt(8, 0).usub_sat(APInt(8, 255))); 1220 1221 EXPECT_EQ(APInt(8, -90), AP_10.ssub_sat(AP_100)); 1222 EXPECT_EQ(APInt(8, 127), AP_100.ssub_sat(-AP_100)); 1223 EXPECT_EQ(APInt(8, -128), (-AP_100).ssub_sat(AP_100)); 1224 EXPECT_EQ(APInt(8, -128), APInt(8, -128).ssub_sat(APInt(8, 127))); 1225 1226 EXPECT_EQ(APInt(8, 250), APInt(8, 50).umul_sat(APInt(8, 5))); 1227 EXPECT_EQ(APInt(8, 255), APInt(8, 50).umul_sat(APInt(8, 6))); 1228 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, 3))); 1229 EXPECT_EQ(APInt(8, 255), APInt(8, 3).umul_sat(APInt(8, -128))); 1230 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, -128))); 1231 1232 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1233 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1234 EXPECT_EQ(APInt(8, 127), APInt(8, 127).smul_sat(APInt(8, 127))); 1235 EXPECT_EQ(APInt(8, -125), APInt(8, -25).smul_sat(APInt(8, 5))); 1236 EXPECT_EQ(APInt(8, -125), APInt(8, 25).smul_sat(APInt(8, -5))); 1237 EXPECT_EQ(APInt(8, 125), APInt(8, -25).smul_sat(APInt(8, -5))); 1238 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1239 EXPECT_EQ(APInt(8, -128), APInt(8, -25).smul_sat(APInt(8, 6))); 1240 EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6))); 1241 EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6))); 1242 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1243 1244 EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5))); 1245 EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6))); 1246 EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7))); 1247 EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8))); 1248 EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2))); 1249 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2))); 1250 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2))); 1251 1252 EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4))); 1253 EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5))); 1254 EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8))); 1255 EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4))); 1256 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5))); 1257 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6))); 1258 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7))); 1259 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8))); 1260 } 1261 1262 TEST(APIntTest, FromArray) { 1263 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 1264 } 1265 1266 TEST(APIntTest, StringBitsNeeded2) { 1267 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 1268 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 1269 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 1270 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 1271 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 1272 1273 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 1274 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 1275 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 1276 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 1277 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 1278 1279 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 1280 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 1281 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 1282 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 1283 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 1284 } 1285 1286 TEST(APIntTest, StringBitsNeeded8) { 1287 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 1288 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 1289 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 1290 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 1291 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 1292 1293 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 1294 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 1295 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 1296 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 1297 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 1298 1299 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 1300 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 1301 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 1302 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 1303 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 1304 } 1305 1306 TEST(APIntTest, StringBitsNeeded10) { 1307 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 1308 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 1309 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 1310 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 1311 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 1312 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 1313 1314 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1315 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1316 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1317 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1318 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1319 1320 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1321 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1322 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1323 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1324 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1325 1326 EXPECT_EQ(1U, APInt::getBitsNeeded("-1", 10)); 1327 EXPECT_EQ(2U, APInt::getBitsNeeded("-2", 10)); 1328 EXPECT_EQ(3U, APInt::getBitsNeeded("-4", 10)); 1329 EXPECT_EQ(4U, APInt::getBitsNeeded("-8", 10)); 1330 EXPECT_EQ(5U, APInt::getBitsNeeded("-16", 10)); 1331 EXPECT_EQ(6U, APInt::getBitsNeeded("-23", 10)); 1332 EXPECT_EQ(6U, APInt::getBitsNeeded("-32", 10)); 1333 EXPECT_EQ(7U, APInt::getBitsNeeded("-64", 10)); 1334 EXPECT_EQ(8U, APInt::getBitsNeeded("-127", 10)); 1335 EXPECT_EQ(8U, APInt::getBitsNeeded("-128", 10)); 1336 EXPECT_EQ(9U, APInt::getBitsNeeded("-255", 10)); 1337 EXPECT_EQ(9U, APInt::getBitsNeeded("-256", 10)); 1338 EXPECT_EQ(10U, APInt::getBitsNeeded("-512", 10)); 1339 EXPECT_EQ(11U, APInt::getBitsNeeded("-1024", 10)); 1340 EXPECT_EQ(12U, APInt::getBitsNeeded("-1025", 10)); 1341 } 1342 1343 TEST(APIntTest, StringBitsNeeded16) { 1344 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1345 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1346 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1347 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1348 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1349 1350 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1351 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1352 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1353 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1354 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1355 1356 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1357 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1358 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1359 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1360 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1361 } 1362 1363 TEST(APIntTest, toString) { 1364 SmallString<16> S; 1365 bool isSigned; 1366 1367 APInt(8, 0).toString(S, 2, true, true); 1368 EXPECT_EQ(std::string(S), "0b0"); 1369 S.clear(); 1370 APInt(8, 0).toString(S, 8, true, true); 1371 EXPECT_EQ(std::string(S), "00"); 1372 S.clear(); 1373 APInt(8, 0).toString(S, 10, true, true); 1374 EXPECT_EQ(std::string(S), "0"); 1375 S.clear(); 1376 APInt(8, 0).toString(S, 16, true, true); 1377 EXPECT_EQ(std::string(S), "0x0"); 1378 S.clear(); 1379 APInt(8, 0).toString(S, 36, true, false); 1380 EXPECT_EQ(std::string(S), "0"); 1381 S.clear(); 1382 1383 // with separators 1384 APInt(64, 140).toString(S, 2, false, true, false, true); 1385 EXPECT_EQ(std::string(S), "0b1000'1100"); 1386 S.clear(); 1387 APInt(64, 1024).toString(S, 8, false, true, false, true); 1388 EXPECT_EQ(std::string(S), "02'000"); 1389 S.clear(); 1390 APInt(64, 1000000).toString(S, 10, false, true, false, true); 1391 EXPECT_EQ(std::string(S), "1'000'000"); 1392 S.clear(); 1393 APInt(64, 1000000).toString(S, 16, false, true, true, true); 1394 EXPECT_EQ(std::string(S), "0xF'4240"); 1395 S.clear(); 1396 APInt(64, 1'000'000'000).toString(S, 36, false, false, false, true); 1397 EXPECT_EQ(std::string(S), "gj'dgxs"); 1398 S.clear(); 1399 1400 isSigned = false; 1401 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1402 EXPECT_EQ(std::string(S), "0b11111111"); 1403 S.clear(); 1404 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1405 EXPECT_EQ(std::string(S), "0377"); 1406 S.clear(); 1407 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1408 EXPECT_EQ(std::string(S), "255"); 1409 S.clear(); 1410 APInt(8, 255, isSigned).toString(S, 16, isSigned, true, /*UpperCase=*/false); 1411 EXPECT_EQ(std::string(S), "0xff"); 1412 S.clear(); 1413 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1414 EXPECT_EQ(std::string(S), "0xFF"); 1415 S.clear(); 1416 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1417 EXPECT_EQ(std::string(S), "73"); 1418 S.clear(); 1419 1420 isSigned = true; 1421 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1422 EXPECT_EQ(std::string(S), "-0b1"); 1423 S.clear(); 1424 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1425 EXPECT_EQ(std::string(S), "-01"); 1426 S.clear(); 1427 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1428 EXPECT_EQ(std::string(S), "-1"); 1429 S.clear(); 1430 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1431 EXPECT_EQ(std::string(S), "-0x1"); 1432 S.clear(); 1433 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1434 EXPECT_EQ(std::string(S), "-1"); 1435 S.clear(); 1436 1437 // negative with separators 1438 APInt(64, -140, isSigned).toString(S, 2, isSigned, true, false, true); 1439 EXPECT_EQ(std::string(S), "-0b1000'1100"); 1440 S.clear(); 1441 APInt(64, -1024, isSigned).toString(S, 8, isSigned, true, false, true); 1442 EXPECT_EQ(std::string(S), "-02'000"); 1443 S.clear(); 1444 APInt(64, -1000000, isSigned).toString(S, 10, isSigned, true, false, true); 1445 EXPECT_EQ(std::string(S), "-1'000'000"); 1446 S.clear(); 1447 APInt(64, -1000000, isSigned).toString(S, 16, isSigned, true, true, true); 1448 EXPECT_EQ(std::string(S), "-0xF'4240"); 1449 S.clear(); 1450 APInt(64, -1'000'000'000, isSigned) 1451 .toString(S, 36, isSigned, false, false, true); 1452 EXPECT_EQ(std::string(S), "-gj'dgxs"); 1453 S.clear(); 1454 } 1455 1456 TEST(APIntTest, Log2) { 1457 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1458 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1459 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1460 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1461 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1462 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1463 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1464 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1465 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1466 } 1467 1468 #ifdef GTEST_HAS_DEATH_TEST 1469 #ifndef NDEBUG 1470 TEST(APIntTest, StringDeath) { 1471 EXPECT_DEATH((void)APInt(32, "", 0), "Invalid string length"); 1472 EXPECT_DEATH((void)APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1473 EXPECT_DEATH((void)APInt(32, "", 10), "Invalid string length"); 1474 EXPECT_DEATH((void)APInt(32, "-", 10), "String is only a sign, needs a value."); 1475 EXPECT_DEATH((void)APInt(1, "1234", 10), "Insufficient bit width"); 1476 EXPECT_DEATH((void)APInt(32, "\0", 10), "Invalid string length"); 1477 EXPECT_DEATH((void)APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1478 EXPECT_DEATH((void)APInt(32, "1L", 10), "Invalid character in digit string"); 1479 } 1480 #endif 1481 #endif 1482 1483 TEST(APIntTest, mul_clear) { 1484 APInt ValA(65, -1ULL); 1485 APInt ValB(65, 4); 1486 APInt ValC(65, 0); 1487 ValC = ValA * ValB; 1488 ValA *= ValB; 1489 SmallString<16> StrA, StrC; 1490 ValA.toString(StrA, 10, false); 1491 ValC.toString(StrC, 10, false); 1492 EXPECT_EQ(std::string(StrA), std::string(StrC)); 1493 } 1494 1495 TEST(APIntTest, Rotate) { 1496 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1497 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1498 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1499 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1500 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1501 1502 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1503 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1504 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1505 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1506 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1507 1508 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1509 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1510 1511 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1512 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1513 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1514 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1515 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1516 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1517 1518 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1519 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1520 1521 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1522 1523 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1524 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1525 1526 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1527 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1528 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1529 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1530 1531 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1532 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1533 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1534 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1535 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1536 1537 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1538 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1539 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1540 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1541 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1542 1543 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1544 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1545 1546 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1547 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1548 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1549 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1550 1551 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1552 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1553 1554 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1555 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1556 1557 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1558 1559 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1560 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1561 1562 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1563 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1564 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1565 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1566 1567 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1568 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1569 EXPECT_EQ(Rot, Big.rotr(144)); 1570 1571 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1572 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1573 } 1574 1575 TEST(APIntTest, Splat) { 1576 APInt ValA(8, 0x01); 1577 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1578 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1579 1580 APInt ValB(3, 5); 1581 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1582 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1583 } 1584 1585 TEST(APIntTest, tcDecrement) { 1586 // Test single word decrement. 1587 1588 // No out borrow. 1589 { 1590 APInt::WordType singleWord = ~APInt::WordType(0) << (APInt::APINT_BITS_PER_WORD - 1); 1591 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1592 EXPECT_EQ(carry, APInt::WordType(0)); 1593 EXPECT_EQ(singleWord, ~APInt::WordType(0) >> 1); 1594 } 1595 1596 // With out borrow. 1597 { 1598 APInt::WordType singleWord = 0; 1599 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1600 EXPECT_EQ(carry, APInt::WordType(1)); 1601 EXPECT_EQ(singleWord, ~APInt::WordType(0)); 1602 } 1603 1604 // Test multiword decrement. 1605 1606 // No across word borrow, no out borrow. 1607 { 1608 APInt::WordType test[4] = {0x1, 0x1, 0x1, 0x1}; 1609 APInt::WordType expected[4] = {0x0, 0x1, 0x1, 0x1}; 1610 APInt::tcDecrement(test, 4); 1611 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1612 } 1613 1614 // 1 across word borrow, no out borrow. 1615 { 1616 APInt::WordType test[4] = {0x0, 0xF, 0x1, 0x1}; 1617 APInt::WordType expected[4] = {~APInt::WordType(0), 0xE, 0x1, 0x1}; 1618 APInt::WordType carry = APInt::tcDecrement(test, 4); 1619 EXPECT_EQ(carry, APInt::WordType(0)); 1620 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1621 } 1622 1623 // 2 across word borrow, no out borrow. 1624 { 1625 APInt::WordType test[4] = {0x0, 0x0, 0xC, 0x1}; 1626 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), 0xB, 0x1}; 1627 APInt::WordType carry = APInt::tcDecrement(test, 4); 1628 EXPECT_EQ(carry, APInt::WordType(0)); 1629 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1630 } 1631 1632 // 3 across word borrow, no out borrow. 1633 { 1634 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x1}; 1635 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), 0x0}; 1636 APInt::WordType carry = APInt::tcDecrement(test, 4); 1637 EXPECT_EQ(carry, APInt::WordType(0)); 1638 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1639 } 1640 1641 // 3 across word borrow, with out borrow. 1642 { 1643 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x0}; 1644 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0)}; 1645 APInt::WordType carry = APInt::tcDecrement(test, 4); 1646 EXPECT_EQ(carry, APInt::WordType(1)); 1647 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1648 } 1649 } 1650 1651 TEST(APIntTest, arrayAccess) { 1652 // Single word check. 1653 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1654 APInt A1(64, E1); 1655 for (unsigned i = 0, e = 64; i < e; ++i) { 1656 EXPECT_EQ(bool(E1 & (1ULL << i)), 1657 A1[i]); 1658 } 1659 1660 // Multiword check. 1661 APInt::WordType E2[4] = { 1662 0xEB6EB136591CBA21ULL, 1663 0x7B9358BD6A33F10AULL, 1664 0x7E7FFA5EADD8846ULL, 1665 0x305F341CA00B613DULL 1666 }; 1667 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 1668 for (unsigned i = 0; i < 4; ++i) { 1669 for (unsigned j = 0; j < APInt::APINT_BITS_PER_WORD; ++j) { 1670 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1671 A2[i*APInt::APINT_BITS_PER_WORD + j]); 1672 } 1673 } 1674 } 1675 1676 TEST(APIntTest, LargeAPIntConstruction) { 1677 // Check that we can properly construct very large APInt. It is very 1678 // unlikely that people will ever do this, but it is a legal input, 1679 // so we should not crash on it. 1680 APInt A9(UINT32_MAX, 0); 1681 EXPECT_FALSE(A9.getBoolValue()); 1682 } 1683 1684 TEST(APIntTest, nearestLogBase2) { 1685 // Single word check. 1686 1687 // Test round up. 1688 uint64_t I1 = 0x1800001; 1689 APInt A1(64, I1); 1690 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1691 1692 // Test round down. 1693 uint64_t I2 = 0x1000011; 1694 APInt A2(64, I2); 1695 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1696 1697 // Test ties round up. 1698 uint64_t I3 = 0x1800000; 1699 APInt A3(64, I3); 1700 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1701 1702 // Multiple word check. 1703 1704 // Test round up. 1705 APInt::WordType I4[4] = {0x0, 0xF, 0x18, 0x0}; 1706 APInt A4(APInt::APINT_BITS_PER_WORD*4, I4); 1707 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1708 1709 // Test round down. 1710 APInt::WordType I5[4] = {0x0, 0xF, 0x10, 0x0}; 1711 APInt A5(APInt::APINT_BITS_PER_WORD*4, I5); 1712 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1713 1714 // Test ties round up. 1715 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1716 APInt A6(APInt::APINT_BITS_PER_WORD*4, I6); 1717 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1718 1719 // Test BitWidth == 1 special cases. 1720 APInt A7(1, 1); 1721 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1722 APInt A8(1, 0); 1723 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1724 1725 // Test the zero case when we have a bit width large enough such 1726 // that the bit width is larger than UINT32_MAX-1. 1727 APInt A9(UINT32_MAX, 0); 1728 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1729 } 1730 1731 TEST(APIntTest, IsSplat) { 1732 APInt A(32, 0x01010101); 1733 EXPECT_FALSE(A.isSplat(1)); 1734 EXPECT_FALSE(A.isSplat(2)); 1735 EXPECT_FALSE(A.isSplat(4)); 1736 EXPECT_TRUE(A.isSplat(8)); 1737 EXPECT_TRUE(A.isSplat(16)); 1738 EXPECT_TRUE(A.isSplat(32)); 1739 1740 APInt B(24, 0xAAAAAA); 1741 EXPECT_FALSE(B.isSplat(1)); 1742 EXPECT_TRUE(B.isSplat(2)); 1743 EXPECT_TRUE(B.isSplat(4)); 1744 EXPECT_TRUE(B.isSplat(8)); 1745 EXPECT_TRUE(B.isSplat(24)); 1746 1747 APInt C(24, 0xABAAAB); 1748 EXPECT_FALSE(C.isSplat(1)); 1749 EXPECT_FALSE(C.isSplat(2)); 1750 EXPECT_FALSE(C.isSplat(4)); 1751 EXPECT_FALSE(C.isSplat(8)); 1752 EXPECT_TRUE(C.isSplat(24)); 1753 1754 APInt D(32, 0xABBAABBA); 1755 EXPECT_FALSE(D.isSplat(1)); 1756 EXPECT_FALSE(D.isSplat(2)); 1757 EXPECT_FALSE(D.isSplat(4)); 1758 EXPECT_FALSE(D.isSplat(8)); 1759 EXPECT_TRUE(D.isSplat(16)); 1760 EXPECT_TRUE(D.isSplat(32)); 1761 1762 APInt E(32, 0); 1763 EXPECT_TRUE(E.isSplat(1)); 1764 EXPECT_TRUE(E.isSplat(2)); 1765 EXPECT_TRUE(E.isSplat(4)); 1766 EXPECT_TRUE(E.isSplat(8)); 1767 EXPECT_TRUE(E.isSplat(16)); 1768 EXPECT_TRUE(E.isSplat(32)); 1769 } 1770 1771 TEST(APIntTest, isMask) { 1772 EXPECT_FALSE(APInt(32, 0x01010101).isMask()); 1773 EXPECT_FALSE(APInt(32, 0xf0000000).isMask()); 1774 EXPECT_FALSE(APInt(32, 0xffff0000).isMask()); 1775 EXPECT_FALSE(APInt(32, 0xff << 1).isMask()); 1776 1777 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1778 EXPECT_FALSE(APInt(N, 0).isMask()); 1779 1780 APInt One(N, 1); 1781 for (int I = 1; I <= N; ++I) { 1782 APInt MaskVal = One.shl(I) - 1; 1783 EXPECT_TRUE(MaskVal.isMask()); 1784 EXPECT_TRUE(MaskVal.isMask(I)); 1785 } 1786 } 1787 } 1788 1789 TEST(APIntTest, isShiftedMask) { 1790 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask()); 1791 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask()); 1792 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask()); 1793 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask()); 1794 1795 unsigned MaskIdx, MaskLen; 1796 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask(MaskIdx, MaskLen)); 1797 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask(MaskIdx, MaskLen)); 1798 EXPECT_EQ(28, (int)MaskIdx); 1799 EXPECT_EQ(4, (int)MaskLen); 1800 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask(MaskIdx, MaskLen)); 1801 EXPECT_EQ(16, (int)MaskIdx); 1802 EXPECT_EQ(16, (int)MaskLen); 1803 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask(MaskIdx, MaskLen)); 1804 EXPECT_EQ(1, (int)MaskIdx); 1805 EXPECT_EQ(8, (int)MaskLen); 1806 1807 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1808 EXPECT_FALSE(APInt(N, 0).isShiftedMask()); 1809 EXPECT_FALSE(APInt(N, 0).isShiftedMask(MaskIdx, MaskLen)); 1810 1811 APInt One(N, 1); 1812 for (int I = 1; I < N; ++I) { 1813 APInt MaskVal = One.shl(I) - 1; 1814 EXPECT_TRUE(MaskVal.isShiftedMask()); 1815 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1816 EXPECT_EQ(0, (int)MaskIdx); 1817 EXPECT_EQ(I, (int)MaskLen); 1818 } 1819 for (int I = 1; I < N - 1; ++I) { 1820 APInt MaskVal = One.shl(I); 1821 EXPECT_TRUE(MaskVal.isShiftedMask()); 1822 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1823 EXPECT_EQ(I, (int)MaskIdx); 1824 EXPECT_EQ(1, (int)MaskLen); 1825 } 1826 for (int I = 1; I < N; ++I) { 1827 APInt MaskVal = APInt::getHighBitsSet(N, I); 1828 EXPECT_TRUE(MaskVal.isShiftedMask()); 1829 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1830 EXPECT_EQ(N - I, (int)MaskIdx); 1831 EXPECT_EQ(I, (int)MaskLen); 1832 } 1833 } 1834 } 1835 1836 TEST(APIntTest, isOneBitSet) { 1837 EXPECT_FALSE(APInt(5, 0x00).isOneBitSet(0)); 1838 EXPECT_FALSE(APInt(5, 0x02).isOneBitSet(0)); 1839 EXPECT_FALSE(APInt(5, 0x03).isOneBitSet(0)); 1840 EXPECT_TRUE(APInt(5, 0x02).isOneBitSet(1)); 1841 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isOneBitSet(31)); 1842 1843 EXPECT_TRUE(APInt::getOneBitSet(255, 13).isOneBitSet(13)); 1844 } 1845 1846 TEST(APIntTest, isPowerOf2) { 1847 EXPECT_FALSE(APInt(5, 0x00).isPowerOf2()); 1848 EXPECT_FALSE(APInt(32, 0x11).isPowerOf2()); 1849 EXPECT_TRUE(APInt(17, 0x01).isPowerOf2()); 1850 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isPowerOf2()); 1851 1852 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1853 EXPECT_FALSE(APInt(N, 0).isPowerOf2()); 1854 EXPECT_TRUE(APInt::getSignedMinValue(N).isPowerOf2()); 1855 1856 APInt One(N, 1); 1857 for (int I = 1; I < N - 1; ++I) { 1858 EXPECT_TRUE(APInt::getOneBitSet(N, I).isPowerOf2()); 1859 1860 APInt MaskVal = One.shl(I); 1861 EXPECT_TRUE(MaskVal.isPowerOf2()); 1862 } 1863 } 1864 } 1865 1866 TEST(APIntTest, isNegatedPowerOf2) { 1867 EXPECT_FALSE(APInt(5, 0x00).isNegatedPowerOf2()); 1868 EXPECT_TRUE(APInt(15, 0x7ffe).isNegatedPowerOf2()); 1869 EXPECT_TRUE(APInt(16, 0xfffc).isNegatedPowerOf2()); 1870 EXPECT_TRUE(APInt(32, 0xffffffff).isNegatedPowerOf2()); 1871 1872 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1873 EXPECT_FALSE(APInt(N, 0).isNegatedPowerOf2()); 1874 EXPECT_TRUE(APInt::getAllOnes(N).isNegatedPowerOf2()); 1875 EXPECT_TRUE(APInt::getSignedMinValue(N).isNegatedPowerOf2()); 1876 EXPECT_TRUE((-APInt::getSignedMinValue(N)).isNegatedPowerOf2()); 1877 1878 APInt One(N, 1); 1879 for (int I = 1; I < N - 1; ++I) { 1880 EXPECT_FALSE(APInt::getOneBitSet(N, I).isNegatedPowerOf2()); 1881 EXPECT_TRUE((-APInt::getOneBitSet(N, I)).isNegatedPowerOf2()); 1882 1883 APInt MaskVal = One.shl(I); 1884 EXPECT_TRUE((-MaskVal).isNegatedPowerOf2()); 1885 1886 APInt ShiftMaskVal = One.getHighBitsSet(N, I); 1887 EXPECT_TRUE(ShiftMaskVal.isNegatedPowerOf2()); 1888 } 1889 } 1890 } 1891 1892 TEST(APIntTest, isAligned) { 1893 struct { 1894 uint64_t alignment; 1895 uint64_t offset; 1896 bool isAligned; 1897 } Tests[] = { 1898 {1, 0, true}, {1, 1, true}, {1, 5, true}, {2, 0, true}, 1899 {2, 1, false}, {2, 2, true}, {2, 7, false}, {2, 16, true}, 1900 {4, 0, true}, {4, 1, false}, {4, 4, true}, {4, 6, false}, 1901 }; 1902 for (const auto &T : Tests) 1903 EXPECT_EQ(APInt(32, T.offset).isAligned(Align(T.alignment)), T.isAligned); 1904 // Tests for APInt that can't represent the alignment. 1905 // Here APInt(4, I) can represent values from 0 to 15. 1906 EXPECT_TRUE(APInt(4, 0).isAligned(Align(32))); // zero is always aligned. 1907 for (int I = 1; I < 16; ++I) 1908 EXPECT_FALSE(APInt(4, I).isAligned(Align(32))); 1909 } 1910 1911 // Test that self-move works with EXPENSIVE_CHECKS. It calls std::shuffle which 1912 // does self-move on some platforms. 1913 #ifdef EXPENSIVE_CHECKS 1914 #if defined(__clang__) 1915 // Disable the pragma warning from versions of Clang without -Wself-move 1916 #pragma clang diagnostic push 1917 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1918 // Disable the warning that triggers on exactly what is being tested. 1919 #pragma clang diagnostic push 1920 #pragma clang diagnostic ignored "-Wself-move" 1921 #endif 1922 TEST(APIntTest, SelfMoveAssignment) { 1923 APInt X(32, 0xdeadbeef); 1924 X = std::move(X); 1925 EXPECT_EQ(32u, X.getBitWidth()); 1926 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1927 1928 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1929 APInt Y(128, Bits); 1930 Y = std::move(Y); 1931 EXPECT_EQ(128u, Y.getBitWidth()); 1932 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1933 const uint64_t *Raw = Y.getRawData(); 1934 EXPECT_EQ(2u, Y.getNumWords()); 1935 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1936 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1937 } 1938 #if defined(__clang__) 1939 #pragma clang diagnostic pop 1940 #pragma clang diagnostic pop 1941 #endif 1942 #endif // EXPENSIVE_CHECKS 1943 1944 TEST(APIntTest, byteSwap) { 1945 EXPECT_EQ(0x00000000, APInt(16, 0x0000).byteSwap()); 1946 EXPECT_EQ(0x0000010f, APInt(16, 0x0f01).byteSwap()); 1947 EXPECT_EQ(0x00ff8000, APInt(24, 0x0080ff).byteSwap()); 1948 EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap()); 1949 EXPECT_EQ(0x228811aaffULL, APInt(40, 0xffaa118822ULL).byteSwap()); 1950 EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap()); 1951 EXPECT_EQ(0xff050403020100ULL, APInt(56, 0x000102030405ffULL).byteSwap()); 1952 EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap()); 1953 1954 for (unsigned N : {16, 24, 32, 48, 56, 64, 72, 80, 96, 112, 128, 248, 256, 1955 1024, 1032, 1040}) { 1956 for (unsigned I = 0; I < N; I += 8) { 1957 APInt X = APInt::getBitsSet(N, I, I + 8); 1958 APInt Y = APInt::getBitsSet(N, N - I - 8, N - I); 1959 EXPECT_EQ(Y, X.byteSwap()); 1960 EXPECT_EQ(X, Y.byteSwap()); 1961 } 1962 } 1963 } 1964 1965 TEST(APIntTest, reverseBits) { 1966 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1967 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1968 1969 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1970 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1971 1972 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1973 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1974 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1975 1976 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1977 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1978 1979 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1980 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1981 1982 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1983 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1984 1985 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1986 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1987 1988 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1989 1990 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1991 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1992 1993 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1994 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1995 1996 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1997 63, 64, 65, 127, 128, 257, 1024 }) { 1998 for (unsigned I = 0; I < N; ++I) { 1999 APInt X = APInt::getOneBitSet(N, I); 2000 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 2001 EXPECT_EQ(Y, X.reverseBits()); 2002 EXPECT_EQ(X, Y.reverseBits()); 2003 } 2004 } 2005 } 2006 2007 TEST(APIntTest, insertBits) { 2008 APInt iSrc(31, 0x00123456); 2009 2010 // Direct copy. 2011 APInt i31(31, 0x76543210ull); 2012 i31.insertBits(iSrc, 0); 2013 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2014 2015 // Single word src/dst insertion. 2016 APInt i63(63, 0x01234567FFFFFFFFull); 2017 i63.insertBits(iSrc, 4); 2018 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2019 2020 // Zero width insert is a noop. 2021 i31.insertBits(APInt::getZeroWidth(), 1); 2022 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2023 2024 // Insert single word src into one word of dst. 2025 APInt i120(120, UINT64_MAX, true); 2026 i120.insertBits(iSrc, 8); 2027 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2028 2029 // Insert single word src into two words of dst. 2030 APInt i127(127, UINT64_MAX, true); 2031 i127.insertBits(iSrc, 48); 2032 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2033 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2034 2035 // Insert on word boundaries. 2036 APInt i128(128, 0); 2037 i128.insertBits(APInt(64, UINT64_MAX, true), 0); 2038 i128.insertBits(APInt(64, UINT64_MAX, true), 64); 2039 EXPECT_EQ(-1, i128.getSExtValue()); 2040 2041 APInt i256(256, UINT64_MAX, true); 2042 i256.insertBits(APInt(65, 0), 0); 2043 i256.insertBits(APInt(69, 0), 64); 2044 i256.insertBits(APInt(128, 0), 128); 2045 EXPECT_EQ(0u, i256.getSExtValue()); 2046 2047 APInt i257(257, 0); 2048 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2049 EXPECT_EQ(i257.extractBits(64, 0).getZExtValue(), 0x0000000000000000ull); 2050 EXPECT_EQ(i257.extractBits(64, 64).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2051 EXPECT_EQ(i257.extractBits(64, 128).getZExtValue(), 0x00000000FFFFFFFFull); 2052 EXPECT_EQ(i257.extractBits(65, 192).getZExtValue(), 0x0000000000000000ull); 2053 2054 // General insertion. 2055 APInt i260(260, UINT64_MAX, true); 2056 i260.insertBits(APInt(129, 1ull << 48), 15); 2057 EXPECT_EQ(i260.extractBits(64, 0).getZExtValue(), 0x8000000000007FFFull); 2058 EXPECT_EQ(i260.extractBits(64, 64).getZExtValue(), 0x0000000000000000ull); 2059 EXPECT_EQ(i260.extractBits(64, 128).getZExtValue(), 0xFFFFFFFFFFFF0000ull); 2060 EXPECT_EQ(i260.extractBits(64, 192).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2061 EXPECT_EQ(i260.extractBits(4, 256).getZExtValue(), 0x000000000000000Full); 2062 } 2063 2064 TEST(APIntTest, insertBitsUInt64) { 2065 // Tests cloned from insertBits but adapted to the numBits <= 64 constraint 2066 uint64_t iSrc = 0x00123456; 2067 2068 // Direct copy. 2069 APInt i31(31, 0x76543210ull); 2070 i31.insertBits(iSrc, 0, 31); 2071 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2072 2073 // Single word src/dst insertion. 2074 APInt i63(63, 0x01234567FFFFFFFFull); 2075 i63.insertBits(iSrc, 4, 31); 2076 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2077 2078 // Insert single word src into one word of dst. 2079 APInt i120(120, UINT64_MAX, true); 2080 i120.insertBits(iSrc, 8, 31); 2081 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2082 2083 // Insert single word src into two words of dst. 2084 APInt i127(127, UINT64_MAX, true); 2085 i127.insertBits(iSrc, 48, 31); 2086 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2087 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2088 2089 // Insert on word boundaries. 2090 APInt i128(128, 0); 2091 i128.insertBits(UINT64_MAX, 0, 64); 2092 i128.insertBits(UINT64_MAX, 64, 64); 2093 EXPECT_EQ(-1, i128.getSExtValue()); 2094 2095 APInt i256(256, UINT64_MAX, true); 2096 i256.insertBits(0, 0, 64); 2097 i256.insertBits(0, 64, 1); 2098 i256.insertBits(0, 64, 64); 2099 i256.insertBits(0, 128, 5); 2100 i256.insertBits(0, 128, 64); 2101 i256.insertBits(0, 192, 64); 2102 EXPECT_EQ(0u, i256.getSExtValue()); 2103 2104 APInt i257(257, 0); 2105 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2106 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 0), 0x0000000000000000ull); 2107 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 64), 0xFFFFFFFFFFFFFFFFull); 2108 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 128), 0x00000000FFFFFFFFull); 2109 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 192), 0x0000000000000000ull); 2110 EXPECT_EQ(i257.extractBitsAsZExtValue(1, 256), 0x0000000000000000ull); 2111 2112 // General insertion. 2113 APInt i260(260, UINT64_MAX, true); 2114 i260.insertBits(APInt(129, 1ull << 48), 15); 2115 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 0), 0x8000000000007FFFull); 2116 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 64), 0x0000000000000000ull); 2117 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 128), 0xFFFFFFFFFFFF0000ull); 2118 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 192), 0xFFFFFFFFFFFFFFFFull); 2119 EXPECT_EQ(i260.extractBitsAsZExtValue(4, 256), 0x000000000000000Full); 2120 } 2121 2122 TEST(APIntTest, extractBits) { 2123 APInt i32(32, 0x1234567); 2124 EXPECT_EQ(0x3456, i32.extractBits(16, 4)); 2125 2126 APInt i64(64, 0x01234567FFFFFFFFull); 2127 EXPECT_EQ(0xFFFFFFFF, i64.extractBits(32, 0)); 2128 EXPECT_EQ(0xFFFFFFFF, i64.trunc(32)); 2129 EXPECT_EQ(0x01234567, i64.extractBits(32, 32)); 2130 EXPECT_EQ(0x01234567, i64.lshr(32).trunc(32)); 2131 2132 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2133 EXPECT_EQ(0xFFu, i257.extractBits(16, 0)); 2134 EXPECT_EQ(0xFFu, i257.lshr(0).trunc(16)); 2135 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1)); 2136 EXPECT_EQ((0xFFu >> 1), i257.lshr(1).trunc(16)); 2137 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue()); 2138 EXPECT_EQ(-1, i257.lshr(64).trunc(32).getSExtValue()); 2139 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue()); 2140 EXPECT_EQ(-1, i257.lshr(128).trunc(128).getSExtValue()); 2141 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue()); 2142 EXPECT_EQ(-1, i257.lshr(191).trunc(66).getSExtValue()); 2143 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2144 i257.extractBits(128, 1).getSExtValue()); 2145 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2146 i257.lshr(1).trunc(128).getSExtValue()); 2147 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2148 i257.extractBits(129, 1).getSExtValue()); 2149 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2150 i257.lshr(1).trunc(129).getSExtValue()); 2151 2152 EXPECT_EQ(APInt(48, 0), 2153 APInt(144, "281474976710655", 10).extractBits(48, 48)); 2154 EXPECT_EQ(APInt(48, 0), 2155 APInt(144, "281474976710655", 10).lshr(48).trunc(48)); 2156 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2157 APInt(144, "281474976710655", 10).extractBits(48, 0)); 2158 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2159 APInt(144, "281474976710655", 10).lshr(0).trunc(48)); 2160 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2161 APInt(144, "281474976710655", 10).extractBits(48, 1)); 2162 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2163 APInt(144, "281474976710655", 10).lshr(1).trunc(48)); 2164 } 2165 2166 TEST(APIntTest, extractBitsAsZExtValue) { 2167 // Tests based on extractBits 2168 APInt i32(32, 0x1234567); 2169 EXPECT_EQ(0x3456u, i32.extractBitsAsZExtValue(16, 4)); 2170 2171 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2172 EXPECT_EQ(0xFFu, i257.extractBitsAsZExtValue(16, 0)); 2173 EXPECT_EQ((0xFFu >> 1), i257.extractBitsAsZExtValue(16, 1)); 2174 EXPECT_EQ(0xFFFFFFFFull, i257.extractBitsAsZExtValue(32, 64)); 2175 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 128)); 2176 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 192)); 2177 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 191)); 2178 EXPECT_EQ(0x3u, i257.extractBitsAsZExtValue(2, 255)); 2179 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2180 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2181 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2182 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2183 EXPECT_EQ(0x1ull, i257.extractBitsAsZExtValue(1, 129)); 2184 2185 EXPECT_EQ(APInt(48, 0), 2186 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 48)); 2187 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2188 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 0)); 2189 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2190 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 1)); 2191 } 2192 2193 TEST(APIntTest, getLowBitsSet) { 2194 APInt i128lo64 = APInt::getLowBitsSet(128, 64); 2195 EXPECT_EQ(0u, i128lo64.countl_one()); 2196 EXPECT_EQ(64u, i128lo64.countl_zero()); 2197 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2198 EXPECT_EQ(0u, i128lo64.countr_zero()); 2199 EXPECT_EQ(64u, i128lo64.countr_one()); 2200 EXPECT_EQ(64u, i128lo64.popcount()); 2201 } 2202 2203 TEST(APIntTest, getBitsSet) { 2204 APInt i64hi1lo1 = APInt::getBitsSet(64, 1, 63); 2205 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2206 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2207 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2208 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2209 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2210 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2211 2212 APInt i127hi1lo1 = APInt::getBitsSet(127, 1, 126); 2213 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2214 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2215 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2216 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2217 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2218 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2219 } 2220 2221 TEST(APIntTest, getBitsSetWithWrap) { 2222 APInt i64hi1lo1 = APInt::getBitsSetWithWrap(64, 1, 63); 2223 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2224 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2225 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2226 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2227 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2228 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2229 2230 APInt i127hi1lo1 = APInt::getBitsSetWithWrap(127, 1, 126); 2231 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2232 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2233 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2234 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2235 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2236 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2237 2238 APInt i64hi1lo1wrap = APInt::getBitsSetWithWrap(64, 63, 1); 2239 EXPECT_EQ(1u, i64hi1lo1wrap.countl_one()); 2240 EXPECT_EQ(0u, i64hi1lo1wrap.countl_zero()); 2241 EXPECT_EQ(64u, i64hi1lo1wrap.getActiveBits()); 2242 EXPECT_EQ(0u, i64hi1lo1wrap.countr_zero()); 2243 EXPECT_EQ(1u, i64hi1lo1wrap.countr_one()); 2244 EXPECT_EQ(2u, i64hi1lo1wrap.popcount()); 2245 2246 APInt i127hi1lo1wrap = APInt::getBitsSetWithWrap(127, 126, 1); 2247 EXPECT_EQ(1u, i127hi1lo1wrap.countl_one()); 2248 EXPECT_EQ(0u, i127hi1lo1wrap.countl_zero()); 2249 EXPECT_EQ(127u, i127hi1lo1wrap.getActiveBits()); 2250 EXPECT_EQ(0u, i127hi1lo1wrap.countr_zero()); 2251 EXPECT_EQ(1u, i127hi1lo1wrap.countr_one()); 2252 EXPECT_EQ(2u, i127hi1lo1wrap.popcount()); 2253 2254 APInt i32hiequallowrap = APInt::getBitsSetWithWrap(32, 10, 10); 2255 EXPECT_EQ(32u, i32hiequallowrap.countl_one()); 2256 EXPECT_EQ(0u, i32hiequallowrap.countl_zero()); 2257 EXPECT_EQ(32u, i32hiequallowrap.getActiveBits()); 2258 EXPECT_EQ(0u, i32hiequallowrap.countr_zero()); 2259 EXPECT_EQ(32u, i32hiequallowrap.countr_one()); 2260 EXPECT_EQ(32u, i32hiequallowrap.popcount()); 2261 } 2262 2263 TEST(APIntTest, getHighBitsSet) { 2264 APInt i64hi32 = APInt::getHighBitsSet(64, 32); 2265 EXPECT_EQ(32u, i64hi32.countl_one()); 2266 EXPECT_EQ(0u, i64hi32.countl_zero()); 2267 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2268 EXPECT_EQ(32u, i64hi32.countr_zero()); 2269 EXPECT_EQ(0u, i64hi32.countr_one()); 2270 EXPECT_EQ(32u, i64hi32.popcount()); 2271 } 2272 2273 TEST(APIntTest, getBitsSetFrom) { 2274 APInt i64hi31 = APInt::getBitsSetFrom(64, 33); 2275 EXPECT_EQ(31u, i64hi31.countl_one()); 2276 EXPECT_EQ(0u, i64hi31.countl_zero()); 2277 EXPECT_EQ(64u, i64hi31.getActiveBits()); 2278 EXPECT_EQ(33u, i64hi31.countr_zero()); 2279 EXPECT_EQ(0u, i64hi31.countr_one()); 2280 EXPECT_EQ(31u, i64hi31.popcount()); 2281 } 2282 2283 TEST(APIntTest, setLowBits) { 2284 APInt i64lo32(64, 0); 2285 i64lo32.setLowBits(32); 2286 EXPECT_EQ(0u, i64lo32.countl_one()); 2287 EXPECT_EQ(32u, i64lo32.countl_zero()); 2288 EXPECT_EQ(32u, i64lo32.getActiveBits()); 2289 EXPECT_EQ(0u, i64lo32.countr_zero()); 2290 EXPECT_EQ(32u, i64lo32.countr_one()); 2291 EXPECT_EQ(32u, i64lo32.popcount()); 2292 2293 APInt i128lo64(128, 0); 2294 i128lo64.setLowBits(64); 2295 EXPECT_EQ(0u, i128lo64.countl_one()); 2296 EXPECT_EQ(64u, i128lo64.countl_zero()); 2297 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2298 EXPECT_EQ(0u, i128lo64.countr_zero()); 2299 EXPECT_EQ(64u, i128lo64.countr_one()); 2300 EXPECT_EQ(64u, i128lo64.popcount()); 2301 2302 APInt i128lo24(128, 0); 2303 i128lo24.setLowBits(24); 2304 EXPECT_EQ(0u, i128lo24.countl_one()); 2305 EXPECT_EQ(104u, i128lo24.countl_zero()); 2306 EXPECT_EQ(24u, i128lo24.getActiveBits()); 2307 EXPECT_EQ(0u, i128lo24.countr_zero()); 2308 EXPECT_EQ(24u, i128lo24.countr_one()); 2309 EXPECT_EQ(24u, i128lo24.popcount()); 2310 2311 APInt i128lo104(128, 0); 2312 i128lo104.setLowBits(104); 2313 EXPECT_EQ(0u, i128lo104.countl_one()); 2314 EXPECT_EQ(24u, i128lo104.countl_zero()); 2315 EXPECT_EQ(104u, i128lo104.getActiveBits()); 2316 EXPECT_EQ(0u, i128lo104.countr_zero()); 2317 EXPECT_EQ(104u, i128lo104.countr_one()); 2318 EXPECT_EQ(104u, i128lo104.popcount()); 2319 2320 APInt i128lo0(128, 0); 2321 i128lo0.setLowBits(0); 2322 EXPECT_EQ(0u, i128lo0.countl_one()); 2323 EXPECT_EQ(128u, i128lo0.countl_zero()); 2324 EXPECT_EQ(0u, i128lo0.getActiveBits()); 2325 EXPECT_EQ(128u, i128lo0.countr_zero()); 2326 EXPECT_EQ(0u, i128lo0.countr_one()); 2327 EXPECT_EQ(0u, i128lo0.popcount()); 2328 2329 APInt i80lo79(80, 0); 2330 i80lo79.setLowBits(79); 2331 EXPECT_EQ(0u, i80lo79.countl_one()); 2332 EXPECT_EQ(1u, i80lo79.countl_zero()); 2333 EXPECT_EQ(79u, i80lo79.getActiveBits()); 2334 EXPECT_EQ(0u, i80lo79.countr_zero()); 2335 EXPECT_EQ(79u, i80lo79.countr_one()); 2336 EXPECT_EQ(79u, i80lo79.popcount()); 2337 } 2338 2339 TEST(APIntTest, setHighBits) { 2340 APInt i64hi32(64, 0); 2341 i64hi32.setHighBits(32); 2342 EXPECT_EQ(32u, i64hi32.countl_one()); 2343 EXPECT_EQ(0u, i64hi32.countl_zero()); 2344 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2345 EXPECT_EQ(32u, i64hi32.countr_zero()); 2346 EXPECT_EQ(0u, i64hi32.countr_one()); 2347 EXPECT_EQ(32u, i64hi32.popcount()); 2348 2349 APInt i128hi64(128, 0); 2350 i128hi64.setHighBits(64); 2351 EXPECT_EQ(64u, i128hi64.countl_one()); 2352 EXPECT_EQ(0u, i128hi64.countl_zero()); 2353 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2354 EXPECT_EQ(64u, i128hi64.countr_zero()); 2355 EXPECT_EQ(0u, i128hi64.countr_one()); 2356 EXPECT_EQ(64u, i128hi64.popcount()); 2357 2358 APInt i128hi24(128, 0); 2359 i128hi24.setHighBits(24); 2360 EXPECT_EQ(24u, i128hi24.countl_one()); 2361 EXPECT_EQ(0u, i128hi24.countl_zero()); 2362 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2363 EXPECT_EQ(104u, i128hi24.countr_zero()); 2364 EXPECT_EQ(0u, i128hi24.countr_one()); 2365 EXPECT_EQ(24u, i128hi24.popcount()); 2366 2367 APInt i128hi104(128, 0); 2368 i128hi104.setHighBits(104); 2369 EXPECT_EQ(104u, i128hi104.countl_one()); 2370 EXPECT_EQ(0u, i128hi104.countl_zero()); 2371 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2372 EXPECT_EQ(24u, i128hi104.countr_zero()); 2373 EXPECT_EQ(0u, i128hi104.countr_one()); 2374 EXPECT_EQ(104u, i128hi104.popcount()); 2375 2376 APInt i128hi0(128, 0); 2377 i128hi0.setHighBits(0); 2378 EXPECT_EQ(0u, i128hi0.countl_one()); 2379 EXPECT_EQ(128u, i128hi0.countl_zero()); 2380 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2381 EXPECT_EQ(128u, i128hi0.countr_zero()); 2382 EXPECT_EQ(0u, i128hi0.countr_one()); 2383 EXPECT_EQ(0u, i128hi0.popcount()); 2384 2385 APInt i80hi1(80, 0); 2386 i80hi1.setHighBits(1); 2387 EXPECT_EQ(1u, i80hi1.countl_one()); 2388 EXPECT_EQ(0u, i80hi1.countl_zero()); 2389 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2390 EXPECT_EQ(79u, i80hi1.countr_zero()); 2391 EXPECT_EQ(0u, i80hi1.countr_one()); 2392 EXPECT_EQ(1u, i80hi1.popcount()); 2393 2394 APInt i32hi16(32, 0); 2395 i32hi16.setHighBits(16); 2396 EXPECT_EQ(16u, i32hi16.countl_one()); 2397 EXPECT_EQ(0u, i32hi16.countl_zero()); 2398 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2399 EXPECT_EQ(16u, i32hi16.countr_zero()); 2400 EXPECT_EQ(0u, i32hi16.countr_one()); 2401 EXPECT_EQ(16u, i32hi16.popcount()); 2402 } 2403 2404 TEST(APIntTest, setBitsFrom) { 2405 APInt i64from63(64, 0); 2406 i64from63.setBitsFrom(63); 2407 EXPECT_EQ(1u, i64from63.countl_one()); 2408 EXPECT_EQ(0u, i64from63.countl_zero()); 2409 EXPECT_EQ(64u, i64from63.getActiveBits()); 2410 EXPECT_EQ(63u, i64from63.countr_zero()); 2411 EXPECT_EQ(0u, i64from63.countr_one()); 2412 EXPECT_EQ(1u, i64from63.popcount()); 2413 } 2414 2415 TEST(APIntTest, setAllBits) { 2416 APInt i32(32, 0); 2417 i32.setAllBits(); 2418 EXPECT_EQ(32u, i32.countl_one()); 2419 EXPECT_EQ(0u, i32.countl_zero()); 2420 EXPECT_EQ(32u, i32.getActiveBits()); 2421 EXPECT_EQ(0u, i32.countr_zero()); 2422 EXPECT_EQ(32u, i32.countr_one()); 2423 EXPECT_EQ(32u, i32.popcount()); 2424 2425 APInt i64(64, 0); 2426 i64.setAllBits(); 2427 EXPECT_EQ(64u, i64.countl_one()); 2428 EXPECT_EQ(0u, i64.countl_zero()); 2429 EXPECT_EQ(64u, i64.getActiveBits()); 2430 EXPECT_EQ(0u, i64.countr_zero()); 2431 EXPECT_EQ(64u, i64.countr_one()); 2432 EXPECT_EQ(64u, i64.popcount()); 2433 2434 APInt i96(96, 0); 2435 i96.setAllBits(); 2436 EXPECT_EQ(96u, i96.countl_one()); 2437 EXPECT_EQ(0u, i96.countl_zero()); 2438 EXPECT_EQ(96u, i96.getActiveBits()); 2439 EXPECT_EQ(0u, i96.countr_zero()); 2440 EXPECT_EQ(96u, i96.countr_one()); 2441 EXPECT_EQ(96u, i96.popcount()); 2442 2443 APInt i128(128, 0); 2444 i128.setAllBits(); 2445 EXPECT_EQ(128u, i128.countl_one()); 2446 EXPECT_EQ(0u, i128.countl_zero()); 2447 EXPECT_EQ(128u, i128.getActiveBits()); 2448 EXPECT_EQ(0u, i128.countr_zero()); 2449 EXPECT_EQ(128u, i128.countr_one()); 2450 EXPECT_EQ(128u, i128.popcount()); 2451 } 2452 2453 TEST(APIntTest, getLoBits) { 2454 APInt i32(32, 0xfa); 2455 i32.setHighBits(1); 2456 EXPECT_EQ(0xa, i32.getLoBits(4)); 2457 APInt i128(128, 0xfa); 2458 i128.setHighBits(1); 2459 EXPECT_EQ(0xa, i128.getLoBits(4)); 2460 } 2461 2462 TEST(APIntTest, getHiBits) { 2463 APInt i32(32, 0xfa); 2464 i32.setHighBits(2); 2465 EXPECT_EQ(0xc, i32.getHiBits(4)); 2466 APInt i128(128, 0xfa); 2467 i128.setHighBits(2); 2468 EXPECT_EQ(0xc, i128.getHiBits(4)); 2469 } 2470 2471 TEST(APIntTest, clearLowBits) { 2472 APInt i64hi32 = APInt::getAllOnes(64); 2473 i64hi32.clearLowBits(32); 2474 EXPECT_EQ(32u, i64hi32.countl_one()); 2475 EXPECT_EQ(0u, i64hi32.countl_zero()); 2476 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2477 EXPECT_EQ(32u, i64hi32.countr_zero()); 2478 EXPECT_EQ(0u, i64hi32.countr_one()); 2479 EXPECT_EQ(32u, i64hi32.popcount()); 2480 2481 APInt i128hi64 = APInt::getAllOnes(128); 2482 i128hi64.clearLowBits(64); 2483 EXPECT_EQ(64u, i128hi64.countl_one()); 2484 EXPECT_EQ(0u, i128hi64.countl_zero()); 2485 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2486 EXPECT_EQ(64u, i128hi64.countr_zero()); 2487 EXPECT_EQ(0u, i128hi64.countr_one()); 2488 EXPECT_EQ(64u, i128hi64.popcount()); 2489 2490 APInt i128hi24 = APInt::getAllOnes(128); 2491 i128hi24.clearLowBits(104); 2492 EXPECT_EQ(24u, i128hi24.countl_one()); 2493 EXPECT_EQ(0u, i128hi24.countl_zero()); 2494 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2495 EXPECT_EQ(104u, i128hi24.countr_zero()); 2496 EXPECT_EQ(0u, i128hi24.countr_one()); 2497 EXPECT_EQ(24u, i128hi24.popcount()); 2498 2499 APInt i128hi104 = APInt::getAllOnes(128); 2500 i128hi104.clearLowBits(24); 2501 EXPECT_EQ(104u, i128hi104.countl_one()); 2502 EXPECT_EQ(0u, i128hi104.countl_zero()); 2503 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2504 EXPECT_EQ(24u, i128hi104.countr_zero()); 2505 EXPECT_EQ(0u, i128hi104.countr_one()); 2506 EXPECT_EQ(104u, i128hi104.popcount()); 2507 2508 APInt i128hi0 = APInt::getAllOnes(128); 2509 i128hi0.clearLowBits(128); 2510 EXPECT_EQ(0u, i128hi0.countl_one()); 2511 EXPECT_EQ(128u, i128hi0.countl_zero()); 2512 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2513 EXPECT_EQ(128u, i128hi0.countr_zero()); 2514 EXPECT_EQ(0u, i128hi0.countr_one()); 2515 EXPECT_EQ(0u, i128hi0.popcount()); 2516 2517 APInt i80hi1 = APInt::getAllOnes(80); 2518 i80hi1.clearLowBits(79); 2519 EXPECT_EQ(1u, i80hi1.countl_one()); 2520 EXPECT_EQ(0u, i80hi1.countl_zero()); 2521 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2522 EXPECT_EQ(79u, i80hi1.countr_zero()); 2523 EXPECT_EQ(0u, i80hi1.countr_one()); 2524 EXPECT_EQ(1u, i80hi1.popcount()); 2525 2526 APInt i32hi16 = APInt::getAllOnes(32); 2527 i32hi16.clearLowBits(16); 2528 EXPECT_EQ(16u, i32hi16.countl_one()); 2529 EXPECT_EQ(0u, i32hi16.countl_zero()); 2530 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2531 EXPECT_EQ(16u, i32hi16.countr_zero()); 2532 EXPECT_EQ(0u, i32hi16.countr_one()); 2533 EXPECT_EQ(16u, i32hi16.popcount()); 2534 } 2535 2536 TEST(APIntTest, abds) { 2537 using APIntOps::abds; 2538 2539 APInt MaxU1(1, 1, false); 2540 APInt MinU1(1, 0, false); 2541 EXPECT_EQ(1u, abds(MaxU1, MinU1).getZExtValue()); 2542 EXPECT_EQ(1u, abds(MinU1, MaxU1).getZExtValue()); 2543 2544 APInt MaxU4(4, 15, false); 2545 APInt MinU4(4, 0, false); 2546 EXPECT_EQ(1, abds(MaxU4, MinU4).getSExtValue()); 2547 EXPECT_EQ(1, abds(MinU4, MaxU4).getSExtValue()); 2548 2549 APInt MaxS8(8, 127, true); 2550 APInt MinS8(8, -128, true); 2551 EXPECT_EQ(-1, abds(MaxS8, MinS8).getSExtValue()); 2552 EXPECT_EQ(-1, abds(MinS8, MaxS8).getSExtValue()); 2553 2554 APInt MaxU16(16, 65535, false); 2555 APInt MinU16(16, 0, false); 2556 EXPECT_EQ(1, abds(MaxU16, MinU16).getSExtValue()); 2557 EXPECT_EQ(1, abds(MinU16, MaxU16).getSExtValue()); 2558 2559 APInt MaxS16(16, 32767, true); 2560 APInt MinS16(16, -32768, true); 2561 APInt ZeroS16(16, 0, true); 2562 EXPECT_EQ(-1, abds(MaxS16, MinS16).getSExtValue()); 2563 EXPECT_EQ(-1, abds(MinS16, MaxS16).getSExtValue()); 2564 EXPECT_EQ(32768u, abds(ZeroS16, MinS16)); 2565 EXPECT_EQ(32768u, abds(MinS16, ZeroS16)); 2566 EXPECT_EQ(32767u, abds(ZeroS16, MaxS16)); 2567 EXPECT_EQ(32767u, abds(MaxS16, ZeroS16)); 2568 } 2569 2570 TEST(APIntTest, abdu) { 2571 using APIntOps::abdu; 2572 2573 APInt MaxU1(1, 1, false); 2574 APInt MinU1(1, 0, false); 2575 EXPECT_EQ(1u, abdu(MaxU1, MinU1).getZExtValue()); 2576 EXPECT_EQ(1u, abdu(MinU1, MaxU1).getZExtValue()); 2577 2578 APInt MaxU4(4, 15, false); 2579 APInt MinU4(4, 0, false); 2580 EXPECT_EQ(15u, abdu(MaxU4, MinU4).getZExtValue()); 2581 EXPECT_EQ(15u, abdu(MinU4, MaxU4).getZExtValue()); 2582 2583 APInt MaxS8(8, 127, true); 2584 APInt MinS8(8, -128, true); 2585 EXPECT_EQ(1u, abdu(MaxS8, MinS8).getZExtValue()); 2586 EXPECT_EQ(1u, abdu(MinS8, MaxS8).getZExtValue()); 2587 2588 APInt MaxU16(16, 65535, false); 2589 APInt MinU16(16, 0, false); 2590 EXPECT_EQ(65535u, abdu(MaxU16, MinU16).getZExtValue()); 2591 EXPECT_EQ(65535u, abdu(MinU16, MaxU16).getZExtValue()); 2592 2593 APInt MaxS16(16, 32767, true); 2594 APInt MinS16(16, -32768, true); 2595 APInt ZeroS16(16, 0, true); 2596 EXPECT_EQ(1u, abdu(MaxS16, MinS16).getZExtValue()); 2597 EXPECT_EQ(1u, abdu(MinS16, MaxS16).getZExtValue()); 2598 EXPECT_EQ(32768u, abdu(ZeroS16, MinS16)); 2599 EXPECT_EQ(32768u, abdu(MinS16, ZeroS16)); 2600 EXPECT_EQ(32767u, abdu(ZeroS16, MaxS16)); 2601 EXPECT_EQ(32767u, abdu(MaxS16, ZeroS16)); 2602 } 2603 2604 TEST(APIntTest, GCD) { 2605 using APIntOps::GreatestCommonDivisor; 2606 2607 for (unsigned Bits : {1, 2, 32, 63, 64, 65}) { 2608 // Test some corner cases near zero. 2609 APInt Zero(Bits, 0), One(Bits, 1); 2610 EXPECT_EQ(GreatestCommonDivisor(Zero, Zero), Zero); 2611 EXPECT_EQ(GreatestCommonDivisor(Zero, One), One); 2612 EXPECT_EQ(GreatestCommonDivisor(One, Zero), One); 2613 EXPECT_EQ(GreatestCommonDivisor(One, One), One); 2614 2615 if (Bits > 1) { 2616 APInt Two(Bits, 2); 2617 EXPECT_EQ(GreatestCommonDivisor(Zero, Two), Two); 2618 EXPECT_EQ(GreatestCommonDivisor(One, Two), One); 2619 EXPECT_EQ(GreatestCommonDivisor(Two, Two), Two); 2620 2621 // Test some corner cases near the highest representable value. 2622 APInt Max(Bits, 0); 2623 Max.setAllBits(); 2624 EXPECT_EQ(GreatestCommonDivisor(Zero, Max), Max); 2625 EXPECT_EQ(GreatestCommonDivisor(One, Max), One); 2626 EXPECT_EQ(GreatestCommonDivisor(Two, Max), One); 2627 EXPECT_EQ(GreatestCommonDivisor(Max, Max), Max); 2628 2629 APInt MaxOver2 = Max.udiv(Two); 2630 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max), One); 2631 // Max - 1 == Max / 2 * 2, because Max is odd. 2632 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max - 1), MaxOver2); 2633 } 2634 } 2635 2636 // Compute the 20th Mersenne prime. 2637 const unsigned BitWidth = 4450; 2638 APInt HugePrime = APInt::getLowBitsSet(BitWidth, 4423); 2639 2640 // 9931 and 123456 are coprime. 2641 APInt A = HugePrime * APInt(BitWidth, 9931); 2642 APInt B = HugePrime * APInt(BitWidth, 123456); 2643 APInt C = GreatestCommonDivisor(A, B); 2644 EXPECT_EQ(C, HugePrime); 2645 } 2646 2647 TEST(APIntTest, LogicalRightShift) { 2648 APInt i256(APInt::getHighBitsSet(256, 2)); 2649 2650 i256.lshrInPlace(1); 2651 EXPECT_EQ(1U, i256.countl_zero()); 2652 EXPECT_EQ(253U, i256.countr_zero()); 2653 EXPECT_EQ(2U, i256.popcount()); 2654 2655 i256.lshrInPlace(62); 2656 EXPECT_EQ(63U, i256.countl_zero()); 2657 EXPECT_EQ(191U, i256.countr_zero()); 2658 EXPECT_EQ(2U, i256.popcount()); 2659 2660 i256.lshrInPlace(65); 2661 EXPECT_EQ(128U, i256.countl_zero()); 2662 EXPECT_EQ(126U, i256.countr_zero()); 2663 EXPECT_EQ(2U, i256.popcount()); 2664 2665 i256.lshrInPlace(64); 2666 EXPECT_EQ(192U, i256.countl_zero()); 2667 EXPECT_EQ(62U, i256.countr_zero()); 2668 EXPECT_EQ(2U, i256.popcount()); 2669 2670 i256.lshrInPlace(63); 2671 EXPECT_EQ(255U, i256.countl_zero()); 2672 EXPECT_EQ(0U, i256.countr_zero()); 2673 EXPECT_EQ(1U, i256.popcount()); 2674 2675 // Ensure we handle large shifts of multi-word. 2676 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2677 EXPECT_EQ(0, neg_one.lshr(128)); 2678 } 2679 2680 TEST(APIntTest, ArithmeticRightShift) { 2681 APInt i72(APInt::getHighBitsSet(72, 1)); 2682 i72.ashrInPlace(46); 2683 EXPECT_EQ(47U, i72.countl_one()); 2684 EXPECT_EQ(25U, i72.countr_zero()); 2685 EXPECT_EQ(47U, i72.popcount()); 2686 2687 i72 = APInt::getHighBitsSet(72, 1); 2688 i72.ashrInPlace(64); 2689 EXPECT_EQ(65U, i72.countl_one()); 2690 EXPECT_EQ(7U, i72.countr_zero()); 2691 EXPECT_EQ(65U, i72.popcount()); 2692 2693 APInt i128(APInt::getHighBitsSet(128, 1)); 2694 i128.ashrInPlace(64); 2695 EXPECT_EQ(65U, i128.countl_one()); 2696 EXPECT_EQ(63U, i128.countr_zero()); 2697 EXPECT_EQ(65U, i128.popcount()); 2698 2699 // Ensure we handle large shifts of multi-word. 2700 const APInt signmin32(APInt::getSignedMinValue(32)); 2701 EXPECT_TRUE(signmin32.ashr(32).isAllOnes()); 2702 2703 // Ensure we handle large shifts of multi-word. 2704 const APInt umax32(APInt::getSignedMaxValue(32)); 2705 EXPECT_EQ(0, umax32.ashr(32)); 2706 2707 // Ensure we handle large shifts of multi-word. 2708 const APInt signmin128(APInt::getSignedMinValue(128)); 2709 EXPECT_TRUE(signmin128.ashr(128).isAllOnes()); 2710 2711 // Ensure we handle large shifts of multi-word. 2712 const APInt umax128(APInt::getSignedMaxValue(128)); 2713 EXPECT_EQ(0, umax128.ashr(128)); 2714 } 2715 2716 TEST(APIntTest, LeftShift) { 2717 APInt i256(APInt::getLowBitsSet(256, 2)); 2718 2719 i256 <<= 1; 2720 EXPECT_EQ(253U, i256.countl_zero()); 2721 EXPECT_EQ(1U, i256.countr_zero()); 2722 EXPECT_EQ(2U, i256.popcount()); 2723 2724 i256 <<= 62; 2725 EXPECT_EQ(191U, i256.countl_zero()); 2726 EXPECT_EQ(63U, i256.countr_zero()); 2727 EXPECT_EQ(2U, i256.popcount()); 2728 2729 i256 <<= 65; 2730 EXPECT_EQ(126U, i256.countl_zero()); 2731 EXPECT_EQ(128U, i256.countr_zero()); 2732 EXPECT_EQ(2U, i256.popcount()); 2733 2734 i256 <<= 64; 2735 EXPECT_EQ(62U, i256.countl_zero()); 2736 EXPECT_EQ(192U, i256.countr_zero()); 2737 EXPECT_EQ(2U, i256.popcount()); 2738 2739 i256 <<= 63; 2740 EXPECT_EQ(0U, i256.countl_zero()); 2741 EXPECT_EQ(255U, i256.countr_zero()); 2742 EXPECT_EQ(1U, i256.popcount()); 2743 2744 // Ensure we handle large shifts of multi-word. 2745 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2746 EXPECT_EQ(0, neg_one.shl(128)); 2747 } 2748 2749 TEST(APIntTest, isSubsetOf) { 2750 APInt i32_1(32, 1); 2751 APInt i32_2(32, 2); 2752 APInt i32_3(32, 3); 2753 EXPECT_FALSE(i32_3.isSubsetOf(i32_1)); 2754 EXPECT_TRUE(i32_1.isSubsetOf(i32_3)); 2755 EXPECT_FALSE(i32_2.isSubsetOf(i32_1)); 2756 EXPECT_FALSE(i32_1.isSubsetOf(i32_2)); 2757 EXPECT_TRUE(i32_3.isSubsetOf(i32_3)); 2758 2759 APInt i128_1(128, 1); 2760 APInt i128_2(128, 2); 2761 APInt i128_3(128, 3); 2762 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2763 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2764 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2765 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2766 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2767 2768 i128_1 <<= 64; 2769 i128_2 <<= 64; 2770 i128_3 <<= 64; 2771 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2772 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2773 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2774 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2775 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2776 } 2777 2778 TEST(APIntTest, sext) { 2779 EXPECT_EQ(0, APInt(1, 0).sext(64)); 2780 EXPECT_EQ(~uint64_t(0), APInt(1, 1).sext(64)); 2781 2782 APInt i32_max(APInt::getSignedMaxValue(32).sext(63)); 2783 EXPECT_EQ(i32_max, i32_max.sext(63)); 2784 EXPECT_EQ(32U, i32_max.countl_zero()); 2785 EXPECT_EQ(0U, i32_max.countr_zero()); 2786 EXPECT_EQ(31U, i32_max.popcount()); 2787 2788 APInt i32_min(APInt::getSignedMinValue(32).sext(63)); 2789 EXPECT_EQ(i32_min, i32_min.sext(63)); 2790 EXPECT_EQ(32U, i32_min.countl_one()); 2791 EXPECT_EQ(31U, i32_min.countr_zero()); 2792 EXPECT_EQ(32U, i32_min.popcount()); 2793 2794 APInt i32_neg1(APInt(32, ~uint64_t(0)).sext(63)); 2795 EXPECT_EQ(i32_neg1, i32_neg1.sext(63)); 2796 EXPECT_EQ(63U, i32_neg1.countl_one()); 2797 EXPECT_EQ(0U, i32_neg1.countr_zero()); 2798 EXPECT_EQ(63U, i32_neg1.popcount()); 2799 } 2800 2801 TEST(APIntTest, trunc) { 2802 APInt val(32, 0xFFFFFFFF); 2803 EXPECT_EQ(0xFFFF, val.trunc(16)); 2804 EXPECT_EQ(0xFFFFFFFF, val.trunc(32)); 2805 } 2806 2807 TEST(APIntTest, concat) { 2808 APInt Int1(4, 0x1ULL); 2809 APInt Int3(4, 0x3ULL); 2810 2811 EXPECT_EQ(0x31, Int3.concat(Int1)); 2812 EXPECT_EQ(APInt(12, 0x313), Int3.concat(Int1).concat(Int3)); 2813 EXPECT_EQ(APInt(16, 0x3313), Int3.concat(Int3).concat(Int1).concat(Int3)); 2814 2815 APInt I64(64, 0x3ULL); 2816 EXPECT_EQ(I64, I64.concat(I64).lshr(64).trunc(64)); 2817 2818 APInt I65(65, 0x3ULL); 2819 APInt I0 = APInt::getZeroWidth(); 2820 EXPECT_EQ(I65, I65.concat(I0)); 2821 EXPECT_EQ(I65, I0.concat(I65)); 2822 } 2823 2824 TEST(APIntTest, multiply) { 2825 APInt i64(64, 1234); 2826 2827 EXPECT_EQ(7006652, i64 * 5678); 2828 EXPECT_EQ(7006652, 5678 * i64); 2829 2830 APInt i128 = APInt::getOneBitSet(128, 64); 2831 APInt i128_1234(128, 1234); 2832 i128_1234 <<= 64; 2833 EXPECT_EQ(i128_1234, i128 * 1234); 2834 EXPECT_EQ(i128_1234, 1234 * i128); 2835 2836 APInt i96 = APInt::getOneBitSet(96, 64); 2837 i96 *= ~0ULL; 2838 EXPECT_EQ(32U, i96.countl_one()); 2839 EXPECT_EQ(32U, i96.popcount()); 2840 EXPECT_EQ(64U, i96.countr_zero()); 2841 } 2842 2843 TEST(APIntTest, RoundingUDiv) { 2844 for (uint64_t Ai = 1; Ai <= 255; Ai++) { 2845 APInt A(8, Ai); 2846 APInt Zero(8, 0); 2847 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::UP)); 2848 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::DOWN)); 2849 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2850 2851 for (uint64_t Bi = 1; Bi <= 255; Bi++) { 2852 APInt B(8, Bi); 2853 { 2854 APInt Quo = APIntOps::RoundingUDiv(A, B, APInt::Rounding::UP); 2855 auto Prod = Quo.zext(16) * B.zext(16); 2856 EXPECT_TRUE(Prod.uge(Ai)); 2857 if (Prod.ugt(Ai)) { 2858 EXPECT_TRUE(((Quo - 1).zext(16) * B.zext(16)).ult(Ai)); 2859 } 2860 } 2861 { 2862 APInt Quo = A.udiv(B); 2863 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2864 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::DOWN)); 2865 } 2866 } 2867 } 2868 } 2869 2870 TEST(APIntTest, RoundingSDiv) { 2871 for (int64_t Ai = -128; Ai <= 127; Ai++) { 2872 APInt A(8, Ai); 2873 2874 if (Ai != 0) { 2875 APInt Zero(8, 0); 2876 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::UP)); 2877 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::DOWN)); 2878 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2879 } 2880 2881 for (int64_t Bi = -128; Bi <= 127; Bi++) { 2882 if (Bi == 0) 2883 continue; 2884 2885 APInt B(8, Bi); 2886 APInt QuoTowardZero = A.sdiv(B); 2887 { 2888 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::UP); 2889 if (A.srem(B).isZero()) { 2890 EXPECT_EQ(QuoTowardZero, Quo); 2891 } else if (A.isNegative() != 2892 B.isNegative()) { // if the math quotient is negative. 2893 EXPECT_EQ(QuoTowardZero, Quo); 2894 } else { 2895 EXPECT_EQ(QuoTowardZero + 1, Quo); 2896 } 2897 } 2898 { 2899 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::DOWN); 2900 if (A.srem(B).isZero()) { 2901 EXPECT_EQ(QuoTowardZero, Quo); 2902 } else if (A.isNegative() != 2903 B.isNegative()) { // if the math quotient is negative. 2904 EXPECT_EQ(QuoTowardZero - 1, Quo); 2905 } else { 2906 EXPECT_EQ(QuoTowardZero, Quo); 2907 } 2908 } 2909 EXPECT_EQ(QuoTowardZero, 2910 APIntOps::RoundingSDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2911 } 2912 } 2913 } 2914 2915 TEST(APIntTest, Average) { 2916 APInt A0(32, 0); 2917 APInt A2(32, 2); 2918 APInt A100(32, 100); 2919 APInt A101(32, 101); 2920 APInt A200(32, 200, false); 2921 APInt ApUMax(32, UINT_MAX, false); 2922 2923 EXPECT_EQ(APInt(32, 150), APIntOps::avgFloorU(A100, A200)); 2924 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A200, A2, APInt::Rounding::DOWN), 2925 APIntOps::avgFloorU(A100, A200)); 2926 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A200, A2, APInt::Rounding::UP), 2927 APIntOps::avgCeilU(A100, A200)); 2928 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A101, A2, APInt::Rounding::DOWN), 2929 APIntOps::avgFloorU(A100, A101)); 2930 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A101, A2, APInt::Rounding::UP), 2931 APIntOps::avgCeilU(A100, A101)); 2932 EXPECT_EQ(A0, APIntOps::avgFloorU(A0, A0)); 2933 EXPECT_EQ(A0, APIntOps::avgCeilU(A0, A0)); 2934 EXPECT_EQ(ApUMax, APIntOps::avgFloorU(ApUMax, ApUMax)); 2935 EXPECT_EQ(ApUMax, APIntOps::avgCeilU(ApUMax, ApUMax)); 2936 EXPECT_EQ(APIntOps::RoundingUDiv(ApUMax, A2, APInt::Rounding::DOWN), 2937 APIntOps::avgFloorU(A0, ApUMax)); 2938 EXPECT_EQ(APIntOps::RoundingUDiv(ApUMax, A2, APInt::Rounding::UP), 2939 APIntOps::avgCeilU(A0, ApUMax)); 2940 2941 APInt Ap100(32, +100); 2942 APInt Ap101(32, +101); 2943 APInt Ap200(32, +200); 2944 APInt Am1(32, -1); 2945 APInt Am100(32, -100); 2946 APInt Am101(32, -101); 2947 APInt Am200(32, -200); 2948 APInt AmSMin(32, INT_MIN); 2949 APInt ApSMax(32, INT_MAX); 2950 2951 EXPECT_EQ(APInt(32, +150), APIntOps::avgFloorS(Ap100, Ap200)); 2952 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap200, A2, APInt::Rounding::DOWN), 2953 APIntOps::avgFloorS(Ap100, Ap200)); 2954 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap200, A2, APInt::Rounding::UP), 2955 APIntOps::avgCeilS(Ap100, Ap200)); 2956 2957 EXPECT_EQ(APInt(32, -150), APIntOps::avgFloorS(Am100, Am200)); 2958 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am200, A2, APInt::Rounding::DOWN), 2959 APIntOps::avgFloorS(Am100, Am200)); 2960 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am200, A2, APInt::Rounding::UP), 2961 APIntOps::avgCeilS(Am100, Am200)); 2962 2963 EXPECT_EQ(APInt(32, +100), APIntOps::avgFloorS(Ap100, Ap101)); 2964 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap101, A2, APInt::Rounding::DOWN), 2965 APIntOps::avgFloorS(Ap100, Ap101)); 2966 EXPECT_EQ(APInt(32, +101), APIntOps::avgCeilS(Ap100, Ap101)); 2967 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap101, A2, APInt::Rounding::UP), 2968 APIntOps::avgCeilS(Ap100, Ap101)); 2969 2970 EXPECT_EQ(APInt(32, -101), APIntOps::avgFloorS(Am100, Am101)); 2971 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am101, A2, APInt::Rounding::DOWN), 2972 APIntOps::avgFloorS(Am100, Am101)); 2973 EXPECT_EQ(APInt(32, -100), APIntOps::avgCeilS(Am100, Am101)); 2974 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am101, A2, APInt::Rounding::UP), 2975 APIntOps::avgCeilS(Am100, Am101)); 2976 2977 EXPECT_EQ(AmSMin, APIntOps::avgFloorS(AmSMin, AmSMin)); 2978 EXPECT_EQ(AmSMin, APIntOps::avgCeilS(AmSMin, AmSMin)); 2979 2980 EXPECT_EQ(APIntOps::RoundingSDiv(AmSMin, A2, APInt::Rounding::DOWN), 2981 APIntOps::avgFloorS(A0, AmSMin)); 2982 EXPECT_EQ(APIntOps::RoundingSDiv(AmSMin, A2, APInt::Rounding::UP), 2983 APIntOps::avgCeilS(A0, AmSMin)); 2984 2985 EXPECT_EQ(A0, APIntOps::avgFloorS(A0, A0)); 2986 EXPECT_EQ(A0, APIntOps::avgCeilS(A0, A0)); 2987 2988 EXPECT_EQ(Am1, APIntOps::avgFloorS(AmSMin, ApSMax)); 2989 EXPECT_EQ(A0, APIntOps::avgCeilS(AmSMin, ApSMax)); 2990 2991 EXPECT_EQ(APIntOps::RoundingSDiv(ApSMax, A2, APInt::Rounding::DOWN), 2992 APIntOps::avgFloorS(A0, ApSMax)); 2993 EXPECT_EQ(APIntOps::RoundingSDiv(ApSMax, A2, APInt::Rounding::UP), 2994 APIntOps::avgCeilS(A0, ApSMax)); 2995 2996 EXPECT_EQ(ApSMax, APIntOps::avgFloorS(ApSMax, ApSMax)); 2997 EXPECT_EQ(ApSMax, APIntOps::avgCeilS(ApSMax, ApSMax)); 2998 } 2999 3000 TEST(APIntTest, umul_ov) { 3001 const std::pair<uint64_t, uint64_t> Overflows[] = { 3002 {0x8000000000000000, 2}, 3003 {0x5555555555555556, 3}, 3004 {4294967296, 4294967296}, 3005 {4294967295, 4294967298}, 3006 }; 3007 const std::pair<uint64_t, uint64_t> NonOverflows[] = { 3008 {0x7fffffffffffffff, 2}, 3009 {0x5555555555555555, 3}, 3010 {4294967295, 4294967297}, 3011 }; 3012 3013 bool Overflow; 3014 for (auto &X : Overflows) { 3015 APInt A(64, X.first); 3016 APInt B(64, X.second); 3017 (void)A.umul_ov(B, Overflow); 3018 EXPECT_TRUE(Overflow); 3019 } 3020 for (auto &X : NonOverflows) { 3021 APInt A(64, X.first); 3022 APInt B(64, X.second); 3023 (void)A.umul_ov(B, Overflow); 3024 EXPECT_FALSE(Overflow); 3025 } 3026 3027 for (unsigned Bits = 1; Bits <= 5; ++Bits) 3028 for (unsigned A = 0; A != 1u << Bits; ++A) 3029 for (unsigned B = 0; B != 1u << Bits; ++B) { 3030 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 3031 APInt Narrow = N1.umul_ov(N2, Overflow); 3032 APInt Wide = N1.zext(2 * Bits) * N2.zext(2 * Bits); 3033 EXPECT_EQ(Wide.trunc(Bits), Narrow); 3034 EXPECT_EQ(Narrow.zext(2 * Bits) != Wide, Overflow); 3035 } 3036 } 3037 3038 TEST(APIntTest, smul_ov) { 3039 for (unsigned Bits = 1; Bits <= 5; ++Bits) 3040 for (unsigned A = 0; A != 1u << Bits; ++A) 3041 for (unsigned B = 0; B != 1u << Bits; ++B) { 3042 bool Overflow; 3043 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 3044 APInt Narrow = N1.smul_ov(N2, Overflow); 3045 APInt Wide = N1.sext(2 * Bits) * N2.sext(2 * Bits); 3046 EXPECT_EQ(Wide.trunc(Bits), Narrow); 3047 EXPECT_EQ(Narrow.sext(2 * Bits) != Wide, Overflow); 3048 } 3049 } 3050 3051 TEST(APIntTest, SolveQuadraticEquationWrap) { 3052 // Verify that "Solution" is the first non-negative integer that solves 3053 // Ax^2 + Bx + C = "0 or overflow", i.e. that it is a correct solution 3054 // as calculated by SolveQuadraticEquationWrap. 3055 auto Validate = [] (int A, int B, int C, unsigned Width, int Solution) { 3056 int Mask = (1 << Width) - 1; 3057 3058 // Solution should be non-negative. 3059 EXPECT_GE(Solution, 0); 3060 3061 auto OverflowBits = [] (int64_t V, unsigned W) { 3062 return V & -(1 << W); 3063 }; 3064 3065 int64_t Over0 = OverflowBits(C, Width); 3066 3067 auto IsZeroOrOverflow = [&] (int X) { 3068 int64_t ValueAtX = A*X*X + B*X + C; 3069 int64_t OverX = OverflowBits(ValueAtX, Width); 3070 return (ValueAtX & Mask) == 0 || OverX != Over0; 3071 }; 3072 3073 auto EquationToString = [&] (const char *X_str) { 3074 return (Twine(A) + Twine(X_str) + Twine("^2 + ") + Twine(B) + 3075 Twine(X_str) + Twine(" + ") + Twine(C) + Twine(", bitwidth: ") + 3076 Twine(Width)).str(); 3077 }; 3078 3079 auto IsSolution = [&] (const char *X_str, int X) { 3080 if (IsZeroOrOverflow(X)) 3081 return ::testing::AssertionSuccess() 3082 << X << " is a solution of " << EquationToString(X_str); 3083 return ::testing::AssertionFailure() 3084 << X << " is not an expected solution of " 3085 << EquationToString(X_str); 3086 }; 3087 3088 auto IsNotSolution = [&] (const char *X_str, int X) { 3089 if (!IsZeroOrOverflow(X)) 3090 return ::testing::AssertionSuccess() 3091 << X << " is not a solution of " << EquationToString(X_str); 3092 return ::testing::AssertionFailure() 3093 << X << " is an unexpected solution of " 3094 << EquationToString(X_str); 3095 }; 3096 3097 // This is the important part: make sure that there is no solution that 3098 // is less than the calculated one. 3099 if (Solution > 0) { 3100 for (int X = 1; X < Solution-1; ++X) 3101 EXPECT_PRED_FORMAT1(IsNotSolution, X); 3102 } 3103 3104 // Verify that the calculated solution is indeed a solution. 3105 EXPECT_PRED_FORMAT1(IsSolution, Solution); 3106 }; 3107 3108 // Generate all possible quadratic equations with Width-bit wide integer 3109 // coefficients, get the solution from SolveQuadraticEquationWrap, and 3110 // verify that the solution is correct. 3111 auto Iterate = [&] (unsigned Width) { 3112 assert(1 < Width && Width < 32); 3113 int Low = -(1 << (Width-1)); 3114 int High = (1 << (Width-1)); 3115 3116 for (int A = Low; A != High; ++A) { 3117 if (A == 0) 3118 continue; 3119 for (int B = Low; B != High; ++B) { 3120 for (int C = Low; C != High; ++C) { 3121 std::optional<APInt> S = APIntOps::SolveQuadraticEquationWrap( 3122 APInt(Width, A), APInt(Width, B), APInt(Width, C), Width); 3123 if (S) 3124 Validate(A, B, C, Width, S->getSExtValue()); 3125 } 3126 } 3127 } 3128 }; 3129 3130 // Test all widths in [2..6]. 3131 for (unsigned i = 2; i <= 6; ++i) 3132 Iterate(i); 3133 } 3134 3135 TEST(APIntTest, MultiplicativeInverseExaustive) { 3136 for (unsigned BitWidth = 1; BitWidth <= 16; ++BitWidth) { 3137 for (unsigned Value = 0; Value < (1u << BitWidth); ++Value) { 3138 APInt V = APInt(BitWidth, Value); 3139 APInt MulInv = 3140 V.zext(BitWidth + 1) 3141 .multiplicativeInverse(APInt::getSignedMinValue(BitWidth + 1)) 3142 .trunc(BitWidth); 3143 APInt One = V * MulInv; 3144 if (!V.isZero() && V.countr_zero() == 0) { 3145 // Multiplicative inverse exists for all odd numbers. 3146 EXPECT_TRUE(One.isOne()); 3147 } else { 3148 // Multiplicative inverse does not exist for even numbers (and 0). 3149 EXPECT_TRUE(MulInv.isZero()); 3150 } 3151 } 3152 } 3153 } 3154 3155 TEST(APIntTest, GetMostSignificantDifferentBit) { 3156 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 0)), 3157 std::nullopt); 3158 EXPECT_EQ( 3159 APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 42)), 3160 std::nullopt); 3161 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 1)), 3162 0u); 3163 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 2)), 3164 1u); 3165 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 3)), 3166 1u); 3167 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 0)), 3168 0u); 3169 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 1)), 3170 std::nullopt); 3171 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 2)), 3172 1u); 3173 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 3)), 3174 1u); 3175 EXPECT_EQ( 3176 *APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 112)), 3177 6u); 3178 } 3179 3180 TEST(APIntTest, GetMostSignificantDifferentBitExaustive) { 3181 auto GetHighestDifferentBitBruteforce = 3182 [](const APInt &V0, const APInt &V1) -> std::optional<unsigned> { 3183 assert(V0.getBitWidth() == V1.getBitWidth() && "Must have same bitwidth"); 3184 if (V0 == V1) 3185 return std::nullopt; // Bitwise identical. 3186 // There is a mismatch. Let's find the most significant different bit. 3187 for (int Bit = V0.getBitWidth() - 1; Bit >= 0; --Bit) { 3188 if (V0[Bit] == V1[Bit]) 3189 continue; 3190 return Bit; 3191 } 3192 llvm_unreachable("Must have found bit mismatch."); 3193 }; 3194 3195 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) { 3196 for (unsigned V0 = 0; V0 < (1u << BitWidth); ++V0) { 3197 for (unsigned V1 = 0; V1 < (1u << BitWidth); ++V1) { 3198 APInt A = APInt(BitWidth, V0); 3199 APInt B = APInt(BitWidth, V1); 3200 3201 auto Bit = APIntOps::GetMostSignificantDifferentBit(A, B); 3202 EXPECT_EQ(Bit, GetHighestDifferentBitBruteforce(A, B)); 3203 3204 if (!Bit) 3205 EXPECT_EQ(A, B); 3206 else { 3207 EXPECT_NE(A, B); 3208 for (unsigned NumLowBits = 0; NumLowBits <= BitWidth; ++NumLowBits) { 3209 APInt Adash = A; 3210 Adash.clearLowBits(NumLowBits); 3211 APInt Bdash = B; 3212 Bdash.clearLowBits(NumLowBits); 3213 // Clearing only low bits up to and including *Bit is sufficient 3214 // to make values equal. 3215 if (NumLowBits >= 1 + *Bit) 3216 EXPECT_EQ(Adash, Bdash); 3217 else 3218 EXPECT_NE(Adash, Bdash); 3219 } 3220 } 3221 } 3222 } 3223 } 3224 } 3225 3226 TEST(APIntTest, SignbitZeroChecks) { 3227 EXPECT_TRUE(APInt(8, -1).isNegative()); 3228 EXPECT_FALSE(APInt(8, -1).isNonNegative()); 3229 EXPECT_FALSE(APInt(8, -1).isStrictlyPositive()); 3230 EXPECT_TRUE(APInt(8, -1).isNonPositive()); 3231 3232 EXPECT_FALSE(APInt(8, 0).isNegative()); 3233 EXPECT_TRUE(APInt(8, 0).isNonNegative()); 3234 EXPECT_FALSE(APInt(8, 0).isStrictlyPositive()); 3235 EXPECT_TRUE(APInt(8, 0).isNonPositive()); 3236 3237 EXPECT_FALSE(APInt(8, 1).isNegative()); 3238 EXPECT_TRUE(APInt(8, 1).isNonNegative()); 3239 EXPECT_TRUE(APInt(8, 1).isStrictlyPositive()); 3240 EXPECT_FALSE(APInt(8, 1).isNonPositive()); 3241 } 3242 3243 TEST(APIntTest, ZeroWidth) { 3244 // Zero width Constructors. 3245 auto ZW = APInt::getZeroWidth(); 3246 EXPECT_EQ(0U, ZW.getBitWidth()); 3247 EXPECT_EQ(0U, APInt(0, ArrayRef<uint64_t>({0, 1, 2})).getBitWidth()); 3248 EXPECT_EQ(0U, APInt(0, "0", 10).getBitWidth()); 3249 3250 // Default constructor is single bit wide. 3251 EXPECT_EQ(1U, APInt().getBitWidth()); 3252 3253 // Copy ctor (move is down below). 3254 APInt ZW2(ZW); 3255 EXPECT_EQ(0U, ZW2.getBitWidth()); 3256 // Assignment 3257 ZW = ZW2; 3258 EXPECT_EQ(0U, ZW.getBitWidth()); 3259 3260 // Methods like getLowBitsSet work with zero bits. 3261 EXPECT_EQ(0U, APInt::getLowBitsSet(0, 0).getBitWidth()); 3262 EXPECT_EQ(0U, APInt::getSplat(0, ZW).getBitWidth()); 3263 EXPECT_EQ(0U, APInt(4, 10).extractBits(0, 2).getBitWidth()); 3264 EXPECT_EQ(0U, APInt(4, 10).extractBitsAsZExtValue(0, 2)); 3265 3266 // Logical operators. 3267 ZW |= ZW2; 3268 ZW &= ZW2; 3269 ZW ^= ZW2; 3270 ZW |= 42; // These ignore high bits of the literal. 3271 ZW &= 42; 3272 ZW ^= 42; 3273 EXPECT_EQ(1, ZW.isIntN(0)); 3274 3275 // Modulo Arithmetic. Divide/Rem aren't defined on division by zero, so they 3276 // aren't supported. 3277 ZW += ZW2; 3278 ZW -= ZW2; 3279 ZW *= ZW2; 3280 3281 // Logical Shifts and rotates, the amount must be <= bitwidth. 3282 ZW <<= 0; 3283 ZW.lshrInPlace(0); 3284 (void)ZW.rotl(0); 3285 (void)ZW.rotr(0); 3286 3287 // Comparisons. 3288 EXPECT_EQ(1, ZW == ZW); 3289 EXPECT_EQ(0, ZW != ZW); 3290 EXPECT_EQ(0, ZW.ult(ZW)); 3291 3292 // Mutations. 3293 ZW.setBitsWithWrap(0, 0); 3294 ZW.setBits(0, 0); 3295 ZW.clearAllBits(); 3296 ZW.flipAllBits(); 3297 3298 // Leading, trailing, ctpop, etc 3299 EXPECT_EQ(0U, ZW.countl_zero()); 3300 EXPECT_EQ(0U, ZW.countl_one()); 3301 EXPECT_EQ(0U, ZW.popcount()); 3302 EXPECT_EQ(0U, ZW.reverseBits().getBitWidth()); 3303 EXPECT_EQ(0U, ZW.getHiBits(0).getBitWidth()); 3304 EXPECT_EQ(0U, ZW.getLoBits(0).getBitWidth()); 3305 EXPECT_EQ(0, ZW.zext(4)); 3306 EXPECT_EQ(0U, APInt(4, 3).trunc(0).getBitWidth()); 3307 EXPECT_TRUE(ZW.isAllOnes()); 3308 3309 // Zero extension. 3310 EXPECT_EQ(0U, ZW.getZExtValue()); 3311 3312 SmallString<42> STR; 3313 ZW.toStringUnsigned(STR); 3314 EXPECT_EQ("0", STR); 3315 3316 // Move ctor (keep at the end of the method since moves are destructive). 3317 APInt MZW1(std::move(ZW)); 3318 EXPECT_EQ(0U, MZW1.getBitWidth()); 3319 // Move Assignment 3320 MZW1 = std::move(ZW2); 3321 EXPECT_EQ(0U, MZW1.getBitWidth()); 3322 } 3323 3324 TEST(APIntTest, ScaleBitMask) { 3325 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8), APInt(8, 0x00)); 3326 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8), APInt(8, 0x0F)); 3327 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8), APInt(8, 0xF0)); 3328 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8), APInt(8, 0xFF)); 3329 3330 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4), APInt(4, 0x00)); 3331 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4), APInt(4, 0x0F)); 3332 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4), APInt(4, 0x0E)); 3333 3334 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 8), APInt(8, 0x00)); 3335 3336 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getZero(1024), 4096), 3337 APInt::getZero(4096)); 3338 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getAllOnes(4096), 256), 3339 APInt::getAllOnes(256)); 3340 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getOneBitSet(4096, 32), 256), 3341 APInt::getOneBitSet(256, 2)); 3342 3343 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8, true), APInt(8, 0x00)); 3344 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8, true), APInt(8, 0x0F)); 3345 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8, true), APInt(8, 0xF0)); 3346 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8, true), APInt(8, 0xFF)); 3347 3348 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4, true), APInt(4, 0x00)); 3349 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4, true), APInt(4, 0x0F)); 3350 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4, true), APInt(4, 0x08)); 3351 } 3352 3353 TEST(APIntTest, DenseMap) { 3354 DenseMap<APInt, int> Map; 3355 APInt ZeroWidthInt(0, 0, false); 3356 Map.insert({ZeroWidthInt, 0}); 3357 Map.find(ZeroWidthInt); 3358 } 3359 3360 TEST(APIntTest, TryExt) { 3361 APInt small(32, 42); 3362 APInt large(128, {0xffff, 0xffff}); 3363 ASSERT_TRUE(small.tryZExtValue().has_value()); 3364 ASSERT_TRUE(small.trySExtValue().has_value()); 3365 ASSERT_FALSE(large.tryZExtValue().has_value()); 3366 ASSERT_FALSE(large.trySExtValue().has_value()); 3367 ASSERT_EQ(small.trySExtValue().value_or(41), 42); 3368 ASSERT_EQ(large.trySExtValue().value_or(41), 41); 3369 3370 APInt negOne32(32, 0); 3371 negOne32.setAllBits(); 3372 ASSERT_EQ(negOne32.trySExtValue().value_or(42), -1); 3373 APInt negOne64(64, 0); 3374 negOne64.setAllBits(); 3375 ASSERT_EQ(negOne64.trySExtValue().value_or(42), -1); 3376 APInt negOne128(128, 0); 3377 negOne128.setAllBits(); 3378 ASSERT_EQ(negOne128.trySExtValue().value_or(42), -1); 3379 ASSERT_EQ(42, APInt(128, -1).trySExtValue().value_or(42)); 3380 } 3381 3382 } // end anonymous namespace 3383