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 <limits> 19 #include <optional> 20 21 using namespace llvm; 22 23 namespace { 24 25 TEST(APIntTest, ValueInit) { 26 APInt Zero = APInt(); 27 EXPECT_TRUE(!Zero); 28 EXPECT_TRUE(!Zero.zext(64)); 29 EXPECT_TRUE(!Zero.sext(64)); 30 } 31 32 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 33 TEST(APIntTest, ShiftLeftByZero) { 34 APInt One = APInt::getZero(65) + 1; 35 APInt Shl = One.shl(0); 36 EXPECT_TRUE(Shl[0]); 37 EXPECT_FALSE(Shl[1]); 38 } 39 40 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 41 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 42 EXPECT_EQ(neg_one, neg_one.ashr(7)); 43 } 44 45 TEST(APIntTest, i128_NegativeCount) { 46 APInt Minus3(128, static_cast<uint64_t>(-3), true); 47 EXPECT_EQ(126u, Minus3.countl_one()); 48 EXPECT_EQ(-3, Minus3.getSExtValue()); 49 50 APInt Minus1(128, static_cast<uint64_t>(-1), true); 51 EXPECT_EQ(0u, Minus1.countl_zero()); 52 EXPECT_EQ(128u, Minus1.countl_one()); 53 EXPECT_EQ(128u, Minus1.getActiveBits()); 54 EXPECT_EQ(0u, Minus1.countr_zero()); 55 EXPECT_EQ(128u, Minus1.countr_one()); 56 EXPECT_EQ(128u, Minus1.popcount()); 57 EXPECT_EQ(-1, Minus1.getSExtValue()); 58 } 59 60 TEST(APIntTest, i33_Count) { 61 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 62 EXPECT_EQ(0u, i33minus2.countl_zero()); 63 EXPECT_EQ(32u, i33minus2.countl_one()); 64 EXPECT_EQ(33u, i33minus2.getActiveBits()); 65 EXPECT_EQ(1u, i33minus2.countr_zero()); 66 EXPECT_EQ(32u, i33minus2.popcount()); 67 EXPECT_EQ(-2, i33minus2.getSExtValue()); 68 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 69 } 70 71 TEST(APIntTest, i61_Count) { 72 APInt i61(61, 1 << 15); 73 EXPECT_EQ(45u, i61.countl_zero()); 74 EXPECT_EQ(0u, i61.countl_one()); 75 EXPECT_EQ(16u, i61.getActiveBits()); 76 EXPECT_EQ(15u, i61.countr_zero()); 77 EXPECT_EQ(1u, i61.popcount()); 78 EXPECT_EQ(static_cast<int64_t>(1 << 15), i61.getSExtValue()); 79 EXPECT_EQ(static_cast<uint64_t>(1 << 15), i61.getZExtValue()); 80 81 i61.setBits(8, 19); 82 EXPECT_EQ(42u, i61.countl_zero()); 83 EXPECT_EQ(0u, i61.countl_one()); 84 EXPECT_EQ(19u, i61.getActiveBits()); 85 EXPECT_EQ(8u, i61.countr_zero()); 86 EXPECT_EQ(11u, i61.popcount()); 87 EXPECT_EQ(static_cast<int64_t>((1 << 19) - (1 << 8)), i61.getSExtValue()); 88 EXPECT_EQ(static_cast<uint64_t>((1 << 19) - (1 << 8)), i61.getZExtValue()); 89 } 90 91 TEST(APIntTest, i65_Count) { 92 APInt i65(65, 0, true); 93 EXPECT_EQ(65u, i65.countl_zero()); 94 EXPECT_EQ(0u, i65.countl_one()); 95 EXPECT_EQ(0u, i65.getActiveBits()); 96 EXPECT_EQ(1u, i65.getActiveWords()); 97 EXPECT_EQ(65u, i65.countr_zero()); 98 EXPECT_EQ(0u, i65.popcount()); 99 100 APInt i65minus(65, 0, true); 101 i65minus.setBit(64); 102 EXPECT_EQ(0u, i65minus.countl_zero()); 103 EXPECT_EQ(1u, i65minus.countl_one()); 104 EXPECT_EQ(65u, i65minus.getActiveBits()); 105 EXPECT_EQ(64u, i65minus.countr_zero()); 106 EXPECT_EQ(1u, i65minus.popcount()); 107 } 108 109 TEST(APIntTest, i128_PositiveCount) { 110 APInt u128max = APInt::getAllOnes(128); 111 EXPECT_EQ(128u, u128max.countl_one()); 112 EXPECT_EQ(0u, u128max.countl_zero()); 113 EXPECT_EQ(128u, u128max.getActiveBits()); 114 EXPECT_EQ(0u, u128max.countr_zero()); 115 EXPECT_EQ(128u, u128max.countr_one()); 116 EXPECT_EQ(128u, u128max.popcount()); 117 118 APInt u64max(128, static_cast<uint64_t>(-1), false); 119 EXPECT_EQ(64u, u64max.countl_zero()); 120 EXPECT_EQ(0u, u64max.countl_one()); 121 EXPECT_EQ(64u, u64max.getActiveBits()); 122 EXPECT_EQ(0u, u64max.countr_zero()); 123 EXPECT_EQ(64u, u64max.countr_one()); 124 EXPECT_EQ(64u, u64max.popcount()); 125 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 126 127 APInt zero(128, 0, true); 128 EXPECT_EQ(128u, zero.countl_zero()); 129 EXPECT_EQ(0u, zero.countl_one()); 130 EXPECT_EQ(0u, zero.getActiveBits()); 131 EXPECT_EQ(128u, zero.countr_zero()); 132 EXPECT_EQ(0u, zero.countr_one()); 133 EXPECT_EQ(0u, zero.popcount()); 134 EXPECT_EQ(0u, zero.getSExtValue()); 135 EXPECT_EQ(0u, zero.getZExtValue()); 136 137 APInt one(128, 1, true); 138 EXPECT_EQ(127u, one.countl_zero()); 139 EXPECT_EQ(0u, one.countl_one()); 140 EXPECT_EQ(1u, one.getActiveBits()); 141 EXPECT_EQ(0u, one.countr_zero()); 142 EXPECT_EQ(1u, one.countr_one()); 143 EXPECT_EQ(1u, one.popcount()); 144 EXPECT_EQ(1, one.getSExtValue()); 145 EXPECT_EQ(1u, one.getZExtValue()); 146 147 APInt s128(128, 2, true); 148 EXPECT_EQ(126u, s128.countl_zero()); 149 EXPECT_EQ(0u, s128.countl_one()); 150 EXPECT_EQ(2u, s128.getActiveBits()); 151 EXPECT_EQ(1u, s128.countr_zero()); 152 EXPECT_EQ(0u, s128.countr_one()); 153 EXPECT_EQ(1u, s128.popcount()); 154 EXPECT_EQ(2, s128.getSExtValue()); 155 EXPECT_EQ(2u, s128.getZExtValue()); 156 157 // NOP Test 158 s128.setBits(42, 42); 159 EXPECT_EQ(126u, s128.countl_zero()); 160 EXPECT_EQ(0u, s128.countl_one()); 161 EXPECT_EQ(2u, s128.getActiveBits()); 162 EXPECT_EQ(1u, s128.countr_zero()); 163 EXPECT_EQ(0u, s128.countr_one()); 164 EXPECT_EQ(1u, s128.popcount()); 165 EXPECT_EQ(2, s128.getSExtValue()); 166 EXPECT_EQ(2u, s128.getZExtValue()); 167 168 s128.setBits(3, 32); 169 EXPECT_EQ(96u, s128.countl_zero()); 170 EXPECT_EQ(0u, s128.countl_one()); 171 EXPECT_EQ(32u, s128.getActiveBits()); 172 EXPECT_EQ(33u, s128.getSignificantBits()); 173 EXPECT_EQ(1u, s128.countr_zero()); 174 EXPECT_EQ(0u, s128.countr_one()); 175 EXPECT_EQ(30u, s128.popcount()); 176 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 177 178 s128.setBits(62, 128); 179 EXPECT_EQ(0u, s128.countl_zero()); 180 EXPECT_EQ(66u, s128.countl_one()); 181 EXPECT_EQ(128u, s128.getActiveBits()); 182 EXPECT_EQ(63u, s128.getSignificantBits()); 183 EXPECT_EQ(1u, s128.countr_zero()); 184 EXPECT_EQ(0u, s128.countr_one()); 185 EXPECT_EQ(96u, s128.popcount()); 186 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 187 static_cast<uint32_t>((~0u << 3) | 2)), 188 s128.getSExtValue()); 189 } 190 191 TEST(APIntTest, i256) { 192 APInt s256(256, 15, true); 193 EXPECT_EQ(252u, s256.countl_zero()); 194 EXPECT_EQ(0u, s256.countl_one()); 195 EXPECT_EQ(4u, s256.getActiveBits()); 196 EXPECT_EQ(0u, s256.countr_zero()); 197 EXPECT_EQ(4u, s256.countr_one()); 198 EXPECT_EQ(4u, s256.popcount()); 199 EXPECT_EQ(15, s256.getSExtValue()); 200 EXPECT_EQ(15u, s256.getZExtValue()); 201 202 s256.setBits(62, 66); 203 EXPECT_EQ(190u, s256.countl_zero()); 204 EXPECT_EQ(0u, s256.countl_one()); 205 EXPECT_EQ(66u, s256.getActiveBits()); 206 EXPECT_EQ(67u, s256.getSignificantBits()); 207 EXPECT_EQ(0u, s256.countr_zero()); 208 EXPECT_EQ(4u, s256.countr_one()); 209 EXPECT_EQ(8u, s256.popcount()); 210 211 s256.setBits(60, 256); 212 EXPECT_EQ(0u, s256.countl_zero()); 213 EXPECT_EQ(196u, s256.countl_one()); 214 EXPECT_EQ(256u, s256.getActiveBits()); 215 EXPECT_EQ(61u, s256.getSignificantBits()); 216 EXPECT_EQ(0u, s256.countr_zero()); 217 EXPECT_EQ(4u, s256.countr_one()); 218 EXPECT_EQ(200u, s256.popcount()); 219 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 220 } 221 222 TEST(APIntTest, i1) { 223 const APInt neg_two(1, static_cast<uint64_t>(-2), true, 224 /*implicitTrunc=*/true); 225 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 226 const APInt zero(1, 0); 227 const APInt one(1, 1); 228 const APInt two(1, 2, false, /*implicitTrunc=*/true); 229 230 EXPECT_EQ(0, neg_two.getSExtValue()); 231 EXPECT_EQ(-1, neg_one.getSExtValue()); 232 EXPECT_EQ(1u, neg_one.getZExtValue()); 233 EXPECT_EQ(0u, zero.getZExtValue()); 234 EXPECT_EQ(-1, one.getSExtValue()); 235 EXPECT_EQ(1u, one.getZExtValue()); 236 EXPECT_EQ(0u, two.getZExtValue()); 237 EXPECT_EQ(0, two.getSExtValue()); 238 239 // Basic equalities for 1-bit values. 240 EXPECT_EQ(zero, two); 241 EXPECT_EQ(zero, neg_two); 242 EXPECT_EQ(one, neg_one); 243 EXPECT_EQ(two, neg_two); 244 245 // Min/max signed values. 246 EXPECT_TRUE(zero.isMaxSignedValue()); 247 EXPECT_FALSE(one.isMaxSignedValue()); 248 EXPECT_FALSE(zero.isMinSignedValue()); 249 EXPECT_TRUE(one.isMinSignedValue()); 250 251 // Additions. 252 EXPECT_EQ(two, one + one); 253 EXPECT_EQ(zero, neg_one + one); 254 EXPECT_EQ(neg_two, neg_one + neg_one); 255 256 // Subtractions. 257 EXPECT_EQ(neg_two, neg_one - one); 258 EXPECT_EQ(two, one - neg_one); 259 EXPECT_EQ(zero, one - one); 260 261 // And 262 EXPECT_EQ(zero, zero & zero); 263 EXPECT_EQ(zero, one & zero); 264 EXPECT_EQ(zero, zero & one); 265 EXPECT_EQ(one, one & one); 266 EXPECT_EQ(zero, zero & zero); 267 EXPECT_EQ(zero, neg_one & zero); 268 EXPECT_EQ(zero, zero & neg_one); 269 EXPECT_EQ(neg_one, neg_one & neg_one); 270 271 // Or 272 EXPECT_EQ(zero, zero | zero); 273 EXPECT_EQ(one, one | zero); 274 EXPECT_EQ(one, zero | one); 275 EXPECT_EQ(one, one | one); 276 EXPECT_EQ(zero, zero | zero); 277 EXPECT_EQ(neg_one, neg_one | zero); 278 EXPECT_EQ(neg_one, zero | neg_one); 279 EXPECT_EQ(neg_one, neg_one | neg_one); 280 281 // Xor 282 EXPECT_EQ(zero, zero ^ zero); 283 EXPECT_EQ(one, one ^ zero); 284 EXPECT_EQ(one, zero ^ one); 285 EXPECT_EQ(zero, one ^ one); 286 EXPECT_EQ(zero, zero ^ zero); 287 EXPECT_EQ(neg_one, neg_one ^ zero); 288 EXPECT_EQ(neg_one, zero ^ neg_one); 289 EXPECT_EQ(zero, neg_one ^ neg_one); 290 291 // Shifts. 292 EXPECT_EQ(zero, one << one); 293 EXPECT_EQ(one, one << zero); 294 EXPECT_EQ(zero, one.shl(1)); 295 EXPECT_EQ(one, one.shl(0)); 296 EXPECT_EQ(zero, one.lshr(1)); 297 EXPECT_EQ(one, one.ashr(1)); 298 299 // Rotates. 300 EXPECT_EQ(one, one.rotl(0)); 301 EXPECT_EQ(one, one.rotl(1)); 302 EXPECT_EQ(one, one.rotr(0)); 303 EXPECT_EQ(one, one.rotr(1)); 304 305 // Multiplies. 306 EXPECT_EQ(neg_one, neg_one * one); 307 EXPECT_EQ(neg_one, one * neg_one); 308 EXPECT_EQ(one, neg_one * neg_one); 309 EXPECT_EQ(one, one * one); 310 311 // Divides. 312 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 313 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 314 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 315 EXPECT_EQ(one, one.sdiv(one)); 316 317 EXPECT_EQ(neg_one, one.udiv(neg_one)); 318 EXPECT_EQ(neg_one, neg_one.udiv(one)); 319 EXPECT_EQ(one, neg_one.udiv(neg_one)); 320 EXPECT_EQ(one, one.udiv(one)); 321 322 // Remainders. 323 EXPECT_EQ(zero, neg_one.srem(one)); 324 EXPECT_EQ(zero, neg_one.urem(one)); 325 EXPECT_EQ(zero, one.srem(neg_one)); 326 327 // sdivrem 328 { 329 APInt q(8, 0); 330 APInt r(8, 0); 331 APInt one(8, 1); 332 APInt two(8, 2); 333 APInt nine(8, 9); 334 APInt four(8, 4); 335 336 EXPECT_EQ(nine.srem(two), one); 337 EXPECT_EQ(nine.srem(-two), one); 338 EXPECT_EQ((-nine).srem(two), -one); 339 EXPECT_EQ((-nine).srem(-two), -one); 340 341 APInt::sdivrem(nine, two, q, r); 342 EXPECT_EQ(four, q); 343 EXPECT_EQ(one, r); 344 APInt::sdivrem(-nine, two, q, r); 345 EXPECT_EQ(-four, q); 346 EXPECT_EQ(-one, r); 347 APInt::sdivrem(nine, -two, q, r); 348 EXPECT_EQ(-four, q); 349 EXPECT_EQ(one, r); 350 APInt::sdivrem(-nine, -two, q, r); 351 EXPECT_EQ(four, q); 352 EXPECT_EQ(-one, r); 353 } 354 } 355 356 TEST(APIntTest, compare) { 357 std::array<APInt, 5> testVals{{ 358 APInt{16, 2}, 359 APInt{16, 1}, 360 APInt{16, 0}, 361 APInt{16, (uint64_t)-1, true}, 362 APInt{16, (uint64_t)-2, true}, 363 }}; 364 365 for (auto &arg1 : testVals) 366 for (auto &arg2 : testVals) { 367 auto uv1 = arg1.getZExtValue(); 368 auto uv2 = arg2.getZExtValue(); 369 auto sv1 = arg1.getSExtValue(); 370 auto sv2 = arg2.getSExtValue(); 371 372 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 373 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 374 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 375 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 376 377 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 378 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 379 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 380 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 381 382 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 383 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 384 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 385 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 386 387 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 388 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 389 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 390 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 391 } 392 } 393 394 TEST(APIntTest, compareWithRawIntegers) { 395 EXPECT_TRUE(!APInt(8, 1).uge(256)); 396 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 397 EXPECT_TRUE( APInt(8, 1).ule(256)); 398 EXPECT_TRUE( APInt(8, 1).ult(256)); 399 EXPECT_TRUE(!APInt(8, 1).sge(256)); 400 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 401 EXPECT_TRUE( APInt(8, 1).sle(256)); 402 EXPECT_TRUE( APInt(8, 1).slt(256)); 403 EXPECT_TRUE(!(APInt(8, 0) == 256)); 404 EXPECT_TRUE( APInt(8, 0) != 256); 405 EXPECT_TRUE(!(APInt(8, 1) == 256)); 406 EXPECT_TRUE( APInt(8, 1) != 256); 407 408 auto uint64max = UINT64_MAX; 409 auto int64max = INT64_MAX; 410 auto int64min = INT64_MIN; 411 412 auto u64 = APInt{128, uint64max}; 413 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 414 auto big = u64 + 1; 415 416 EXPECT_TRUE( u64.uge(uint64max)); 417 EXPECT_TRUE(!u64.ugt(uint64max)); 418 EXPECT_TRUE( u64.ule(uint64max)); 419 EXPECT_TRUE(!u64.ult(uint64max)); 420 EXPECT_TRUE( u64.sge(int64max)); 421 EXPECT_TRUE( u64.sgt(int64max)); 422 EXPECT_TRUE(!u64.sle(int64max)); 423 EXPECT_TRUE(!u64.slt(int64max)); 424 EXPECT_TRUE( u64.sge(int64min)); 425 EXPECT_TRUE( u64.sgt(int64min)); 426 EXPECT_TRUE(!u64.sle(int64min)); 427 EXPECT_TRUE(!u64.slt(int64min)); 428 429 EXPECT_TRUE(u64 == uint64max); 430 EXPECT_TRUE(u64 != int64max); 431 EXPECT_TRUE(u64 != int64min); 432 433 EXPECT_TRUE(!s64.uge(uint64max)); 434 EXPECT_TRUE(!s64.ugt(uint64max)); 435 EXPECT_TRUE( s64.ule(uint64max)); 436 EXPECT_TRUE( s64.ult(uint64max)); 437 EXPECT_TRUE( s64.sge(int64max)); 438 EXPECT_TRUE(!s64.sgt(int64max)); 439 EXPECT_TRUE( s64.sle(int64max)); 440 EXPECT_TRUE(!s64.slt(int64max)); 441 EXPECT_TRUE( s64.sge(int64min)); 442 EXPECT_TRUE( s64.sgt(int64min)); 443 EXPECT_TRUE(!s64.sle(int64min)); 444 EXPECT_TRUE(!s64.slt(int64min)); 445 446 EXPECT_TRUE(s64 != uint64max); 447 EXPECT_TRUE(s64 == int64max); 448 EXPECT_TRUE(s64 != int64min); 449 450 EXPECT_TRUE( big.uge(uint64max)); 451 EXPECT_TRUE( big.ugt(uint64max)); 452 EXPECT_TRUE(!big.ule(uint64max)); 453 EXPECT_TRUE(!big.ult(uint64max)); 454 EXPECT_TRUE( big.sge(int64max)); 455 EXPECT_TRUE( big.sgt(int64max)); 456 EXPECT_TRUE(!big.sle(int64max)); 457 EXPECT_TRUE(!big.slt(int64max)); 458 EXPECT_TRUE( big.sge(int64min)); 459 EXPECT_TRUE( big.sgt(int64min)); 460 EXPECT_TRUE(!big.sle(int64min)); 461 EXPECT_TRUE(!big.slt(int64min)); 462 463 EXPECT_TRUE(big != uint64max); 464 EXPECT_TRUE(big != int64max); 465 EXPECT_TRUE(big != int64min); 466 } 467 468 TEST(APIntTest, compareWithInt64Min) { 469 int64_t edge = INT64_MIN; 470 int64_t edgeP1 = edge + 1; 471 int64_t edgeM1 = INT64_MAX; 472 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 473 474 EXPECT_TRUE(!a.slt(edge)); 475 EXPECT_TRUE( a.sle(edge)); 476 EXPECT_TRUE(!a.sgt(edge)); 477 EXPECT_TRUE( a.sge(edge)); 478 EXPECT_TRUE( a.slt(edgeP1)); 479 EXPECT_TRUE( a.sle(edgeP1)); 480 EXPECT_TRUE(!a.sgt(edgeP1)); 481 EXPECT_TRUE(!a.sge(edgeP1)); 482 EXPECT_TRUE( a.slt(edgeM1)); 483 EXPECT_TRUE( a.sle(edgeM1)); 484 EXPECT_TRUE(!a.sgt(edgeM1)); 485 EXPECT_TRUE(!a.sge(edgeM1)); 486 } 487 488 TEST(APIntTest, compareWithHalfInt64Max) { 489 uint64_t edge = 0x4000000000000000; 490 uint64_t edgeP1 = edge + 1; 491 uint64_t edgeM1 = edge - 1; 492 auto a = APInt{64, edge}; 493 494 EXPECT_TRUE(!a.ult(edge)); 495 EXPECT_TRUE( a.ule(edge)); 496 EXPECT_TRUE(!a.ugt(edge)); 497 EXPECT_TRUE( a.uge(edge)); 498 EXPECT_TRUE( a.ult(edgeP1)); 499 EXPECT_TRUE( a.ule(edgeP1)); 500 EXPECT_TRUE(!a.ugt(edgeP1)); 501 EXPECT_TRUE(!a.uge(edgeP1)); 502 EXPECT_TRUE(!a.ult(edgeM1)); 503 EXPECT_TRUE(!a.ule(edgeM1)); 504 EXPECT_TRUE( a.ugt(edgeM1)); 505 EXPECT_TRUE( a.uge(edgeM1)); 506 507 EXPECT_TRUE(!a.slt(edge)); 508 EXPECT_TRUE( a.sle(edge)); 509 EXPECT_TRUE(!a.sgt(edge)); 510 EXPECT_TRUE( a.sge(edge)); 511 EXPECT_TRUE( a.slt(edgeP1)); 512 EXPECT_TRUE( a.sle(edgeP1)); 513 EXPECT_TRUE(!a.sgt(edgeP1)); 514 EXPECT_TRUE(!a.sge(edgeP1)); 515 EXPECT_TRUE(!a.slt(edgeM1)); 516 EXPECT_TRUE(!a.sle(edgeM1)); 517 EXPECT_TRUE( a.sgt(edgeM1)); 518 EXPECT_TRUE( a.sge(edgeM1)); 519 } 520 521 TEST(APIntTest, compareLargeIntegers) { 522 // Make sure all the combinations of signed comparisons work with big ints. 523 auto One = APInt{128, static_cast<uint64_t>(1), true}; 524 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 525 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 526 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 527 528 EXPECT_TRUE(!One.slt(One)); 529 EXPECT_TRUE(!Two.slt(One)); 530 EXPECT_TRUE(MinusOne.slt(One)); 531 EXPECT_TRUE(MinusTwo.slt(One)); 532 533 EXPECT_TRUE(One.slt(Two)); 534 EXPECT_TRUE(!Two.slt(Two)); 535 EXPECT_TRUE(MinusOne.slt(Two)); 536 EXPECT_TRUE(MinusTwo.slt(Two)); 537 538 EXPECT_TRUE(!One.slt(MinusOne)); 539 EXPECT_TRUE(!Two.slt(MinusOne)); 540 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 541 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 542 543 EXPECT_TRUE(!One.slt(MinusTwo)); 544 EXPECT_TRUE(!Two.slt(MinusTwo)); 545 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 546 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 547 } 548 549 TEST(APIntTest, binaryOpsWithRawIntegers) { 550 // Single word check. 551 uint64_t E1 = 0x2CA7F46BF6569915ULL; 552 APInt A1(64, E1); 553 554 EXPECT_EQ(A1 & E1, E1); 555 EXPECT_EQ(A1 & 0, 0); 556 EXPECT_EQ(A1 & 1, 1); 557 EXPECT_EQ(A1 & 5, 5); 558 EXPECT_EQ(A1 & UINT64_MAX, E1); 559 560 EXPECT_EQ(A1 | E1, E1); 561 EXPECT_EQ(A1 | 0, E1); 562 EXPECT_EQ(A1 | 1, E1); 563 EXPECT_EQ(A1 | 2, E1 | 2); 564 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 565 566 EXPECT_EQ(A1 ^ E1, 0); 567 EXPECT_EQ(A1 ^ 0, E1); 568 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 569 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 570 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 571 572 // Multiword check. 573 uint64_t N = 0xEB6EB136591CBA21ULL; 574 APInt::WordType E2[4] = { 575 N, 576 0x7B9358BD6A33F10AULL, 577 0x7E7FFA5EADD8846ULL, 578 0x305F341CA00B613DULL 579 }; 580 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 581 582 EXPECT_EQ(A2 & N, N); 583 EXPECT_EQ(A2 & 0, 0); 584 EXPECT_EQ(A2 & 1, 1); 585 EXPECT_EQ(A2 & 5, 1); 586 EXPECT_EQ(A2 & UINT64_MAX, N); 587 588 EXPECT_EQ(A2 | N, A2); 589 EXPECT_EQ(A2 | 0, A2); 590 EXPECT_EQ(A2 | 1, A2); 591 EXPECT_EQ(A2 | 2, A2 + 2); 592 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 593 594 EXPECT_EQ(A2 ^ N, A2 - N); 595 EXPECT_EQ(A2 ^ 0, A2); 596 EXPECT_EQ(A2 ^ 1, A2 - 1); 597 EXPECT_EQ(A2 ^ 7, A2 + 5); 598 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 599 } 600 601 TEST(APIntTest, rvalue_arithmetic) { 602 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 603 604 // Lamdba to return an APInt by value, but also provide the raw value of the 605 // allocated data. 606 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 607 APInt V(129, HexString, 16); 608 RawData = V.getRawData(); 609 return V; 610 }; 611 612 APInt One(129, "1", 16); 613 APInt Two(129, "2", 16); 614 APInt Three(129, "3", 16); 615 APInt MinusOne = -One; 616 617 const uint64_t *RawDataL = nullptr; 618 const uint64_t *RawDataR = nullptr; 619 620 { 621 // 1 + 1 = 2 622 APInt AddLL = One + One; 623 EXPECT_EQ(AddLL, Two); 624 625 APInt AddLR = One + getRValue("1", RawDataR); 626 EXPECT_EQ(AddLR, Two); 627 EXPECT_EQ(AddLR.getRawData(), RawDataR); 628 629 APInt AddRL = getRValue("1", RawDataL) + One; 630 EXPECT_EQ(AddRL, Two); 631 EXPECT_EQ(AddRL.getRawData(), RawDataL); 632 633 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 634 EXPECT_EQ(AddRR, Two); 635 EXPECT_EQ(AddRR.getRawData(), RawDataR); 636 637 // LValue's and constants 638 APInt AddLK = One + 1; 639 EXPECT_EQ(AddLK, Two); 640 641 APInt AddKL = 1 + One; 642 EXPECT_EQ(AddKL, Two); 643 644 // RValue's and constants 645 APInt AddRK = getRValue("1", RawDataL) + 1; 646 EXPECT_EQ(AddRK, Two); 647 EXPECT_EQ(AddRK.getRawData(), RawDataL); 648 649 APInt AddKR = 1 + getRValue("1", RawDataR); 650 EXPECT_EQ(AddKR, Two); 651 EXPECT_EQ(AddKR.getRawData(), RawDataR); 652 } 653 654 { 655 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 656 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 657 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 658 659 APInt AddLL = AllOnes + Two; 660 EXPECT_EQ(AddLL, HighOneLowOne); 661 662 APInt AddLR = AllOnes + getRValue("2", RawDataR); 663 EXPECT_EQ(AddLR, HighOneLowOne); 664 EXPECT_EQ(AddLR.getRawData(), RawDataR); 665 666 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 667 EXPECT_EQ(AddRL, HighOneLowOne); 668 EXPECT_EQ(AddRL.getRawData(), RawDataL); 669 670 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 671 getRValue("2", RawDataR); 672 EXPECT_EQ(AddRR, HighOneLowOne); 673 EXPECT_EQ(AddRR.getRawData(), RawDataR); 674 675 // LValue's and constants 676 APInt AddLK = AllOnes + 2; 677 EXPECT_EQ(AddLK, HighOneLowOne); 678 679 APInt AddKL = 2 + AllOnes; 680 EXPECT_EQ(AddKL, HighOneLowOne); 681 682 // RValue's and constants 683 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 684 EXPECT_EQ(AddRK, HighOneLowOne); 685 EXPECT_EQ(AddRK.getRawData(), RawDataL); 686 687 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 688 EXPECT_EQ(AddKR, HighOneLowOne); 689 EXPECT_EQ(AddKR.getRawData(), RawDataR); 690 } 691 692 { 693 // 2 - 1 = 1 694 APInt SubLL = Two - One; 695 EXPECT_EQ(SubLL, One); 696 697 APInt SubLR = Two - getRValue("1", RawDataR); 698 EXPECT_EQ(SubLR, One); 699 EXPECT_EQ(SubLR.getRawData(), RawDataR); 700 701 APInt SubRL = getRValue("2", RawDataL) - One; 702 EXPECT_EQ(SubRL, One); 703 EXPECT_EQ(SubRL.getRawData(), RawDataL); 704 705 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 706 EXPECT_EQ(SubRR, One); 707 EXPECT_EQ(SubRR.getRawData(), RawDataR); 708 709 // LValue's and constants 710 APInt SubLK = Two - 1; 711 EXPECT_EQ(SubLK, One); 712 713 APInt SubKL = 2 - One; 714 EXPECT_EQ(SubKL, One); 715 716 // RValue's and constants 717 APInt SubRK = getRValue("2", RawDataL) - 1; 718 EXPECT_EQ(SubRK, One); 719 EXPECT_EQ(SubRK.getRawData(), RawDataL); 720 721 APInt SubKR = 2 - getRValue("1", RawDataR); 722 EXPECT_EQ(SubKR, One); 723 EXPECT_EQ(SubKR.getRawData(), RawDataR); 724 } 725 726 { 727 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 728 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 729 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 730 731 APInt SubLL = HighOneLowOne - AllOnes; 732 EXPECT_EQ(SubLL, Two); 733 734 APInt SubLR = HighOneLowOne - 735 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 736 EXPECT_EQ(SubLR, Two); 737 EXPECT_EQ(SubLR.getRawData(), RawDataR); 738 739 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 740 AllOnes; 741 EXPECT_EQ(SubRL, Two); 742 EXPECT_EQ(SubRL.getRawData(), RawDataL); 743 744 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 745 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 746 EXPECT_EQ(SubRR, Two); 747 EXPECT_EQ(SubRR.getRawData(), RawDataR); 748 749 // LValue's and constants 750 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 751 APInt SubLK = HighOneLowOne - 2; 752 EXPECT_EQ(SubLK, AllOnes); 753 754 // 2 - (-1) = 3 755 APInt SubKL = 2 - MinusOne; 756 EXPECT_EQ(SubKL, Three); 757 758 // RValue's and constants 759 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 760 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 761 EXPECT_EQ(SubRK, AllOnes); 762 EXPECT_EQ(SubRK.getRawData(), RawDataL); 763 764 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 765 EXPECT_EQ(SubKR, Three); 766 EXPECT_EQ(SubKR.getRawData(), RawDataR); 767 } 768 } 769 770 TEST(APIntTest, rvalue_bitwise) { 771 // Test all combinations of lvalue/rvalue lhs/rhs of and/or/xor 772 773 // Lamdba to return an APInt by value, but also provide the raw value of the 774 // allocated data. 775 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 776 APInt V(129, HexString, 16); 777 RawData = V.getRawData(); 778 return V; 779 }; 780 781 APInt Ten(129, "A", 16); 782 APInt Twelve(129, "C", 16); 783 784 const uint64_t *RawDataL = nullptr; 785 const uint64_t *RawDataR = nullptr; 786 787 { 788 // 12 & 10 = 8 789 APInt AndLL = Ten & Twelve; 790 EXPECT_EQ(AndLL, 0x8); 791 792 APInt AndLR = Ten & getRValue("C", RawDataR); 793 EXPECT_EQ(AndLR, 0x8); 794 EXPECT_EQ(AndLR.getRawData(), RawDataR); 795 796 APInt AndRL = getRValue("A", RawDataL) & Twelve; 797 EXPECT_EQ(AndRL, 0x8); 798 EXPECT_EQ(AndRL.getRawData(), RawDataL); 799 800 APInt AndRR = getRValue("A", RawDataL) & getRValue("C", RawDataR); 801 EXPECT_EQ(AndRR, 0x8); 802 EXPECT_EQ(AndRR.getRawData(), RawDataR); 803 804 // LValue's and constants 805 APInt AndLK = Ten & 0xc; 806 EXPECT_EQ(AndLK, 0x8); 807 808 APInt AndKL = 0xa & Twelve; 809 EXPECT_EQ(AndKL, 0x8); 810 811 // RValue's and constants 812 APInt AndRK = getRValue("A", RawDataL) & 0xc; 813 EXPECT_EQ(AndRK, 0x8); 814 EXPECT_EQ(AndRK.getRawData(), RawDataL); 815 816 APInt AndKR = 0xa & getRValue("C", RawDataR); 817 EXPECT_EQ(AndKR, 0x8); 818 EXPECT_EQ(AndKR.getRawData(), RawDataR); 819 } 820 821 { 822 // 12 | 10 = 14 823 APInt OrLL = Ten | Twelve; 824 EXPECT_EQ(OrLL, 0xe); 825 826 APInt OrLR = Ten | getRValue("C", RawDataR); 827 EXPECT_EQ(OrLR, 0xe); 828 EXPECT_EQ(OrLR.getRawData(), RawDataR); 829 830 APInt OrRL = getRValue("A", RawDataL) | Twelve; 831 EXPECT_EQ(OrRL, 0xe); 832 EXPECT_EQ(OrRL.getRawData(), RawDataL); 833 834 APInt OrRR = getRValue("A", RawDataL) | getRValue("C", RawDataR); 835 EXPECT_EQ(OrRR, 0xe); 836 EXPECT_EQ(OrRR.getRawData(), RawDataR); 837 838 // LValue's and constants 839 APInt OrLK = Ten | 0xc; 840 EXPECT_EQ(OrLK, 0xe); 841 842 APInt OrKL = 0xa | Twelve; 843 EXPECT_EQ(OrKL, 0xe); 844 845 // RValue's and constants 846 APInt OrRK = getRValue("A", RawDataL) | 0xc; 847 EXPECT_EQ(OrRK, 0xe); 848 EXPECT_EQ(OrRK.getRawData(), RawDataL); 849 850 APInt OrKR = 0xa | getRValue("C", RawDataR); 851 EXPECT_EQ(OrKR, 0xe); 852 EXPECT_EQ(OrKR.getRawData(), RawDataR); 853 } 854 855 { 856 // 12 ^ 10 = 6 857 APInt XorLL = Ten ^ Twelve; 858 EXPECT_EQ(XorLL, 0x6); 859 860 APInt XorLR = Ten ^ getRValue("C", RawDataR); 861 EXPECT_EQ(XorLR, 0x6); 862 EXPECT_EQ(XorLR.getRawData(), RawDataR); 863 864 APInt XorRL = getRValue("A", RawDataL) ^ Twelve; 865 EXPECT_EQ(XorRL, 0x6); 866 EXPECT_EQ(XorRL.getRawData(), RawDataL); 867 868 APInt XorRR = getRValue("A", RawDataL) ^ getRValue("C", RawDataR); 869 EXPECT_EQ(XorRR, 0x6); 870 EXPECT_EQ(XorRR.getRawData(), RawDataR); 871 872 // LValue's and constants 873 APInt XorLK = Ten ^ 0xc; 874 EXPECT_EQ(XorLK, 0x6); 875 876 APInt XorKL = 0xa ^ Twelve; 877 EXPECT_EQ(XorKL, 0x6); 878 879 // RValue's and constants 880 APInt XorRK = getRValue("A", RawDataL) ^ 0xc; 881 EXPECT_EQ(XorRK, 0x6); 882 EXPECT_EQ(XorRK.getRawData(), RawDataL); 883 884 APInt XorKR = 0xa ^ getRValue("C", RawDataR); 885 EXPECT_EQ(XorKR, 0x6); 886 EXPECT_EQ(XorKR.getRawData(), RawDataR); 887 } 888 } 889 890 TEST(APIntTest, rvalue_invert) { 891 // Lamdba to return an APInt by value, but also provide the raw value of the 892 // allocated data. 893 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 894 APInt V(129, HexString, 16); 895 RawData = V.getRawData(); 896 return V; 897 }; 898 899 APInt One(129, 1); 900 APInt NegativeTwo(129, -2ULL, true); 901 902 const uint64_t *RawData = nullptr; 903 904 { 905 // ~1 = -2 906 APInt NegL = ~One; 907 EXPECT_EQ(NegL, NegativeTwo); 908 909 APInt NegR = ~getRValue("1", RawData); 910 EXPECT_EQ(NegR, NegativeTwo); 911 EXPECT_EQ(NegR.getRawData(), RawData); 912 } 913 } 914 915 // Tests different div/rem varaints using scheme (a * b + c) / a 916 void testDiv(APInt a, APInt b, APInt c) { 917 ASSERT_TRUE(a.uge(b)); // Must: a >= b 918 ASSERT_TRUE(a.ugt(c)); // Must: a > c 919 920 auto p = a * b + c; 921 922 auto q = p.udiv(a); 923 auto r = p.urem(a); 924 EXPECT_EQ(b, q); 925 EXPECT_EQ(c, r); 926 APInt::udivrem(p, a, q, r); 927 EXPECT_EQ(b, q); 928 EXPECT_EQ(c, r); 929 q = p.sdiv(a); 930 r = p.srem(a); 931 EXPECT_EQ(b, q); 932 EXPECT_EQ(c, r); 933 APInt::sdivrem(p, a, q, r); 934 EXPECT_EQ(b, q); 935 EXPECT_EQ(c, r); 936 937 if (b.ugt(c)) { // Test also symmetric case 938 q = p.udiv(b); 939 r = p.urem(b); 940 EXPECT_EQ(a, q); 941 EXPECT_EQ(c, r); 942 APInt::udivrem(p, b, q, r); 943 EXPECT_EQ(a, q); 944 EXPECT_EQ(c, r); 945 q = p.sdiv(b); 946 r = p.srem(b); 947 EXPECT_EQ(a, q); 948 EXPECT_EQ(c, r); 949 APInt::sdivrem(p, b, q, r); 950 EXPECT_EQ(a, q); 951 EXPECT_EQ(c, r); 952 } 953 } 954 955 TEST(APIntTest, divrem_big1) { 956 // Tests KnuthDiv rare step D6 957 testDiv({256, "1ffffffffffffffff", 16}, 958 {256, "1ffffffffffffffff", 16}, 959 {256, 0}); 960 } 961 962 TEST(APIntTest, divrem_big2) { 963 // Tests KnuthDiv rare step D6 964 testDiv({1024, "112233ceff" 965 "cecece000000ffffffffffffffffffff" 966 "ffffffffffffffffffffffffffffffff" 967 "ffffffffffffffffffffffffffffffff" 968 "ffffffffffffffffffffffffffffff33", 16}, 969 {1024, "111111ffffffffffffffff" 970 "ffffffffffffffffffffffffffffffff" 971 "fffffffffffffffffffffffffffffccf" 972 "ffffffffffffffffffffffffffffff00", 16}, 973 {1024, 7919}); 974 } 975 976 TEST(APIntTest, divrem_big3) { 977 // Tests KnuthDiv case without shift 978 testDiv({256, "80000001ffffffffffffffff", 16}, 979 {256, "ffffffffffffff0000000", 16}, 980 {256, 4219}); 981 } 982 983 TEST(APIntTest, divrem_big4) { 984 // Tests heap allocation in divide() enfoced by huge numbers 985 testDiv(APInt{4096, 5}.shl(2001), 986 APInt{4096, 1}.shl(2000), 987 APInt{4096, 4219*13}); 988 } 989 990 TEST(APIntTest, divrem_big5) { 991 // Tests one word divisor case of divide() 992 testDiv(APInt{1024, 19}.shl(811), 993 APInt{1024, 4356013}, // one word 994 APInt{1024, 1}); 995 } 996 997 TEST(APIntTest, divrem_big6) { 998 // Tests some rare "borrow" cases in D4 step 999 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 1000 APInt{512, "10000000000000001000000000000001", 16}, 1001 APInt{512, "10000000000000000000000000000000", 16}); 1002 } 1003 1004 TEST(APIntTest, divrem_big7) { 1005 // Yet another test for KnuthDiv rare step D6. 1006 testDiv({224, "800000008000000200000005", 16}, 1007 {224, "fffffffd", 16}, 1008 {224, "80000000800000010000000f", 16}); 1009 } 1010 1011 void testDiv(APInt a, uint64_t b, APInt c) { 1012 auto p = a * b + c; 1013 1014 APInt q; 1015 uint64_t r; 1016 // Unsigned division will only work if our original number wasn't negative. 1017 if (!a.isNegative()) { 1018 q = p.udiv(b); 1019 r = p.urem(b); 1020 EXPECT_EQ(a, q); 1021 EXPECT_EQ(c, r); 1022 APInt::udivrem(p, b, q, r); 1023 EXPECT_EQ(a, q); 1024 EXPECT_EQ(c, r); 1025 } 1026 q = p.sdiv(b); 1027 r = p.srem(b); 1028 EXPECT_EQ(a, q); 1029 if (c.isNegative()) 1030 EXPECT_EQ(-c, -r); // Need to negate so the uint64_t compare will work. 1031 else 1032 EXPECT_EQ(c, r); 1033 int64_t sr; 1034 APInt::sdivrem(p, b, q, sr); 1035 EXPECT_EQ(a, q); 1036 if (c.isNegative()) 1037 EXPECT_EQ(-c, -sr); // Need to negate so the uint64_t compare will work. 1038 else 1039 EXPECT_EQ(c, sr); 1040 } 1041 1042 TEST(APIntTest, divremuint) { 1043 // Single word APInt 1044 testDiv(APInt{64, 9}, 1045 2, 1046 APInt{64, 1}); 1047 1048 // Single word negative APInt 1049 testDiv(-APInt{64, 9}, 1050 2, 1051 -APInt{64, 1}); 1052 1053 // Multiword dividend with only one significant word. 1054 testDiv(APInt{256, 9}, 1055 2, 1056 APInt{256, 1}); 1057 1058 // Negative dividend. 1059 testDiv(-APInt{256, 9}, 1060 2, 1061 -APInt{256, 1}); 1062 1063 // Multiword dividend 1064 testDiv(APInt{1024, 19}.shl(811), 1065 4356013, // one word 1066 APInt{1024, 1}); 1067 } 1068 1069 TEST(APIntTest, divrem_simple) { 1070 // Test simple cases. 1071 APInt A(65, 2), B(65, 2); 1072 APInt Q, R; 1073 1074 // X / X 1075 APInt::sdivrem(A, B, Q, R); 1076 EXPECT_EQ(Q, APInt(65, 1)); 1077 EXPECT_EQ(R, APInt(65, 0)); 1078 APInt::udivrem(A, B, Q, R); 1079 EXPECT_EQ(Q, APInt(65, 1)); 1080 EXPECT_EQ(R, APInt(65, 0)); 1081 1082 // 0 / X 1083 APInt O(65, 0); 1084 APInt::sdivrem(O, B, Q, R); 1085 EXPECT_EQ(Q, APInt(65, 0)); 1086 EXPECT_EQ(R, APInt(65, 0)); 1087 APInt::udivrem(O, B, Q, R); 1088 EXPECT_EQ(Q, APInt(65, 0)); 1089 EXPECT_EQ(R, APInt(65, 0)); 1090 1091 // X / 1 1092 APInt I(65, 1); 1093 APInt::sdivrem(A, I, Q, R); 1094 EXPECT_EQ(Q, A); 1095 EXPECT_EQ(R, APInt(65, 0)); 1096 APInt::udivrem(A, I, Q, R); 1097 EXPECT_EQ(Q, A); 1098 EXPECT_EQ(R, APInt(65, 0)); 1099 } 1100 1101 TEST(APIntTest, fromString) { 1102 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 1103 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 1104 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 1105 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 1106 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 1107 1108 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 1109 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 1110 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 1111 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 1112 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 1113 1114 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 1115 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 1116 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 1117 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 1118 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 1119 1120 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 1121 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 1122 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 1123 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 1124 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 1125 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 1126 1127 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 1128 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 1129 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 1130 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 1131 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 1132 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 1133 1134 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 1135 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 1136 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 1137 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 1138 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 1139 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 1140 1141 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 1142 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 1143 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 1144 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 1145 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 1146 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 1147 1148 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 1149 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 1150 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 1151 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 1152 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 1153 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 1154 1155 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 1156 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 1157 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 1158 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 1159 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 1160 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 1161 1162 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 1163 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 1164 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 1165 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 1166 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 1167 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 1168 1169 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 1170 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 1171 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 1172 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 1173 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 1174 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 1175 1176 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 1177 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 1178 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 1179 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 1180 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 1181 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 1182 } 1183 1184 TEST(APIntTest, SaturatingMath) { 1185 APInt AP_10 = APInt(8, 10); 1186 APInt AP_42 = APInt(8, 42); 1187 APInt AP_100 = APInt(8, 100); 1188 APInt AP_200 = APInt(8, 200); 1189 1190 EXPECT_EQ(APInt(8, 100), AP_100.truncUSat(8)); 1191 EXPECT_EQ(APInt(7, 100), AP_100.truncUSat(7)); 1192 EXPECT_EQ(APInt(6, 63), AP_100.truncUSat(6)); 1193 EXPECT_EQ(APInt(5, 31), AP_100.truncUSat(5)); 1194 1195 EXPECT_EQ(APInt(8, 200), AP_200.truncUSat(8)); 1196 EXPECT_EQ(APInt(7, 127), AP_200.truncUSat(7)); 1197 EXPECT_EQ(APInt(6, 63), AP_200.truncUSat(6)); 1198 EXPECT_EQ(APInt(5, 31), AP_200.truncUSat(5)); 1199 1200 EXPECT_EQ(APInt(8, 42), AP_42.truncSSat(8)); 1201 EXPECT_EQ(APInt(7, 42), AP_42.truncSSat(7)); 1202 EXPECT_EQ(APInt(6, 31), AP_42.truncSSat(6)); 1203 EXPECT_EQ(APInt(5, 15), AP_42.truncSSat(5)); 1204 1205 EXPECT_EQ(APInt(8, -56), AP_200.truncSSat(8)); 1206 EXPECT_EQ(APInt(7, -56), AP_200.truncSSat(7)); 1207 EXPECT_EQ(APInt(6, -32), AP_200.truncSSat(6)); 1208 EXPECT_EQ(APInt(5, -16), AP_200.truncSSat(5)); 1209 1210 EXPECT_EQ(APInt(8, 200), AP_100.uadd_sat(AP_100)); 1211 EXPECT_EQ(APInt(8, 255), AP_100.uadd_sat(AP_200)); 1212 EXPECT_EQ(APInt(8, 255), APInt(8, 255).uadd_sat(APInt(8, 255))); 1213 1214 EXPECT_EQ(APInt(8, 110), AP_10.sadd_sat(AP_100)); 1215 EXPECT_EQ(APInt(8, 127), AP_100.sadd_sat(AP_100)); 1216 EXPECT_EQ(APInt(8, -128), (-AP_100).sadd_sat(-AP_100)); 1217 EXPECT_EQ(APInt(8, -128), APInt(8, -128).sadd_sat(APInt(8, -128))); 1218 1219 EXPECT_EQ(APInt(8, 90), AP_100.usub_sat(AP_10)); 1220 EXPECT_EQ(APInt(8, 0), AP_100.usub_sat(AP_200)); 1221 EXPECT_EQ(APInt(8, 0), APInt(8, 0).usub_sat(APInt(8, 255))); 1222 1223 EXPECT_EQ(APInt(8, -90), AP_10.ssub_sat(AP_100)); 1224 EXPECT_EQ(APInt(8, 127), AP_100.ssub_sat(-AP_100)); 1225 EXPECT_EQ(APInt(8, -128), (-AP_100).ssub_sat(AP_100)); 1226 EXPECT_EQ(APInt(8, -128), APInt(8, -128).ssub_sat(APInt(8, 127))); 1227 1228 EXPECT_EQ(APInt(8, 250), APInt(8, 50).umul_sat(APInt(8, 5))); 1229 EXPECT_EQ(APInt(8, 255), APInt(8, 50).umul_sat(APInt(8, 6))); 1230 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, 3))); 1231 EXPECT_EQ(APInt(8, 255), APInt(8, 3).umul_sat(APInt(8, -128))); 1232 EXPECT_EQ(APInt(8, 255), APInt(8, -128).umul_sat(APInt(8, -128))); 1233 1234 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1235 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1236 EXPECT_EQ(APInt(8, 127), APInt(8, 127).smul_sat(APInt(8, 127))); 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, 125), APInt(8, -25).smul_sat(APInt(8, -5))); 1240 EXPECT_EQ(APInt(8, 125), APInt(8, 25).smul_sat(APInt(8, 5))); 1241 EXPECT_EQ(APInt(8, -128), APInt(8, -25).smul_sat(APInt(8, 6))); 1242 EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6))); 1243 EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6))); 1244 EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); 1245 1246 EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5))); 1247 EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6))); 1248 EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7))); 1249 EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8))); 1250 EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2))); 1251 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2))); 1252 EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2))); 1253 1254 EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4))); 1255 EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5))); 1256 EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8))); 1257 EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4))); 1258 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5))); 1259 EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6))); 1260 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7))); 1261 EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8))); 1262 } 1263 1264 TEST(APIntTest, FromArray) { 1265 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 1266 } 1267 1268 TEST(APIntTest, StringBitsNeeded2) { 1269 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 1270 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 1271 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 1272 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 1273 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 1274 1275 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 1276 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 1277 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 1278 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 1279 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 1280 1281 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 1282 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 1283 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 1284 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 1285 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 1286 } 1287 1288 TEST(APIntTest, StringBitsNeeded8) { 1289 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 1290 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 1291 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 1292 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 1293 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 1294 1295 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 1296 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 1297 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 1298 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 1299 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 1300 1301 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 1302 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 1303 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 1304 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 1305 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 1306 } 1307 1308 TEST(APIntTest, StringBitsNeeded10) { 1309 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 1310 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 1311 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 1312 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 1313 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 1314 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 1315 1316 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1317 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1318 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1319 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1320 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1321 1322 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1323 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1324 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1325 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1326 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1327 1328 EXPECT_EQ(1U, APInt::getBitsNeeded("-1", 10)); 1329 EXPECT_EQ(2U, APInt::getBitsNeeded("-2", 10)); 1330 EXPECT_EQ(3U, APInt::getBitsNeeded("-4", 10)); 1331 EXPECT_EQ(4U, APInt::getBitsNeeded("-8", 10)); 1332 EXPECT_EQ(5U, APInt::getBitsNeeded("-16", 10)); 1333 EXPECT_EQ(6U, APInt::getBitsNeeded("-23", 10)); 1334 EXPECT_EQ(6U, APInt::getBitsNeeded("-32", 10)); 1335 EXPECT_EQ(7U, APInt::getBitsNeeded("-64", 10)); 1336 EXPECT_EQ(8U, APInt::getBitsNeeded("-127", 10)); 1337 EXPECT_EQ(8U, APInt::getBitsNeeded("-128", 10)); 1338 EXPECT_EQ(9U, APInt::getBitsNeeded("-255", 10)); 1339 EXPECT_EQ(9U, APInt::getBitsNeeded("-256", 10)); 1340 EXPECT_EQ(10U, APInt::getBitsNeeded("-512", 10)); 1341 EXPECT_EQ(11U, APInt::getBitsNeeded("-1024", 10)); 1342 EXPECT_EQ(12U, APInt::getBitsNeeded("-1025", 10)); 1343 } 1344 1345 TEST(APIntTest, StringBitsNeeded16) { 1346 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1347 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1348 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1349 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1350 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1351 1352 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1353 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1354 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1355 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1356 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1357 1358 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1359 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1360 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1361 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1362 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1363 } 1364 1365 TEST(APIntTest, toString) { 1366 SmallString<16> S; 1367 bool isSigned; 1368 1369 APInt(8, 0).toString(S, 2, true, true); 1370 EXPECT_EQ(std::string(S), "0b0"); 1371 S.clear(); 1372 APInt(8, 0).toString(S, 8, true, true); 1373 EXPECT_EQ(std::string(S), "00"); 1374 S.clear(); 1375 APInt(8, 0).toString(S, 10, true, true); 1376 EXPECT_EQ(std::string(S), "0"); 1377 S.clear(); 1378 APInt(8, 0).toString(S, 16, true, true); 1379 EXPECT_EQ(std::string(S), "0x0"); 1380 S.clear(); 1381 APInt(8, 0).toString(S, 36, true, false); 1382 EXPECT_EQ(std::string(S), "0"); 1383 S.clear(); 1384 1385 // with separators 1386 APInt(64, 140).toString(S, 2, false, true, false, true); 1387 EXPECT_EQ(std::string(S), "0b1000'1100"); 1388 S.clear(); 1389 APInt(64, 1024).toString(S, 8, false, true, false, true); 1390 EXPECT_EQ(std::string(S), "02'000"); 1391 S.clear(); 1392 APInt(64, 1000000).toString(S, 10, false, true, false, true); 1393 EXPECT_EQ(std::string(S), "1'000'000"); 1394 S.clear(); 1395 APInt(64, 1000000).toString(S, 16, false, true, true, true); 1396 EXPECT_EQ(std::string(S), "0xF'4240"); 1397 S.clear(); 1398 APInt(64, 1'000'000'000).toString(S, 36, false, false, false, true); 1399 EXPECT_EQ(std::string(S), "gj'dgxs"); 1400 S.clear(); 1401 1402 isSigned = false; 1403 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1404 EXPECT_EQ(std::string(S), "0b11111111"); 1405 S.clear(); 1406 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1407 EXPECT_EQ(std::string(S), "0377"); 1408 S.clear(); 1409 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1410 EXPECT_EQ(std::string(S), "255"); 1411 S.clear(); 1412 APInt(8, 255, isSigned).toString(S, 16, isSigned, true, /*UpperCase=*/false); 1413 EXPECT_EQ(std::string(S), "0xff"); 1414 S.clear(); 1415 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1416 EXPECT_EQ(std::string(S), "0xFF"); 1417 S.clear(); 1418 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1419 EXPECT_EQ(std::string(S), "73"); 1420 S.clear(); 1421 1422 isSigned = true; 1423 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1424 EXPECT_EQ(std::string(S), "-0b1"); 1425 S.clear(); 1426 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1427 EXPECT_EQ(std::string(S), "-01"); 1428 S.clear(); 1429 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1430 EXPECT_EQ(std::string(S), "-1"); 1431 S.clear(); 1432 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1433 EXPECT_EQ(std::string(S), "-0x1"); 1434 S.clear(); 1435 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1436 EXPECT_EQ(std::string(S), "-1"); 1437 S.clear(); 1438 1439 // negative with separators 1440 APInt(64, -140, isSigned).toString(S, 2, isSigned, true, false, true); 1441 EXPECT_EQ(std::string(S), "-0b1000'1100"); 1442 S.clear(); 1443 APInt(64, -1024, isSigned).toString(S, 8, isSigned, true, false, true); 1444 EXPECT_EQ(std::string(S), "-02'000"); 1445 S.clear(); 1446 APInt(64, -1000000, isSigned).toString(S, 10, isSigned, true, false, true); 1447 EXPECT_EQ(std::string(S), "-1'000'000"); 1448 S.clear(); 1449 APInt(64, -1000000, isSigned).toString(S, 16, isSigned, true, true, true); 1450 EXPECT_EQ(std::string(S), "-0xF'4240"); 1451 S.clear(); 1452 APInt(64, -1'000'000'000, isSigned) 1453 .toString(S, 36, isSigned, false, false, true); 1454 EXPECT_EQ(std::string(S), "-gj'dgxs"); 1455 S.clear(); 1456 } 1457 1458 TEST(APIntTest, Log2) { 1459 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1460 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1461 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1462 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1463 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1464 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1465 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1466 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1467 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1468 } 1469 1470 #ifdef GTEST_HAS_DEATH_TEST 1471 #ifndef NDEBUG 1472 TEST(APIntTest, StringDeath) { 1473 EXPECT_DEATH((void)APInt(32, "", 0), "Invalid string length"); 1474 EXPECT_DEATH((void)APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1475 EXPECT_DEATH((void)APInt(32, "", 10), "Invalid string length"); 1476 EXPECT_DEATH((void)APInt(32, "-", 10), "String is only a sign, needs a value."); 1477 EXPECT_DEATH((void)APInt(1, "1234", 10), "Insufficient bit width"); 1478 EXPECT_DEATH((void)APInt(32, "\0", 10), "Invalid string length"); 1479 EXPECT_DEATH((void)APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1480 EXPECT_DEATH((void)APInt(32, "1L", 10), "Invalid character in digit string"); 1481 } 1482 #endif 1483 #endif 1484 1485 TEST(APIntTest, mul_clear) { 1486 APInt ValA(65, -1ULL); 1487 APInt ValB(65, 4); 1488 APInt ValC(65, 0); 1489 ValC = ValA * ValB; 1490 ValA *= ValB; 1491 SmallString<16> StrA, StrC; 1492 ValA.toString(StrA, 10, false); 1493 ValC.toString(StrC, 10, false); 1494 EXPECT_EQ(std::string(StrA), std::string(StrC)); 1495 } 1496 1497 TEST(APIntTest, Rotate) { 1498 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1499 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1500 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1501 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1502 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1503 1504 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1505 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1506 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1507 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1508 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1509 1510 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1511 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1512 1513 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1514 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1515 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1516 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1517 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1518 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1519 1520 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1521 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1522 1523 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1524 1525 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1526 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1527 1528 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1529 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1530 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1531 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1532 1533 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1534 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1535 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1536 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1537 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1538 1539 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1540 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1541 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1542 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1543 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1544 1545 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1546 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1547 1548 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1549 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1550 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1551 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1552 1553 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1554 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1555 1556 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1557 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1558 1559 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1560 1561 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1562 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1563 1564 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1565 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1566 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1567 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1568 1569 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1570 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1571 EXPECT_EQ(Rot, Big.rotr(144)); 1572 1573 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1574 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1575 } 1576 1577 TEST(APIntTest, Splat) { 1578 APInt ValA(8, 0x01); 1579 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1580 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1581 1582 APInt ValB(3, 5); 1583 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1584 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1585 } 1586 1587 TEST(APIntTest, tcDecrement) { 1588 // Test single word decrement. 1589 1590 // No out borrow. 1591 { 1592 APInt::WordType singleWord = ~APInt::WordType(0) << (APInt::APINT_BITS_PER_WORD - 1); 1593 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1594 EXPECT_EQ(carry, APInt::WordType(0)); 1595 EXPECT_EQ(singleWord, ~APInt::WordType(0) >> 1); 1596 } 1597 1598 // With out borrow. 1599 { 1600 APInt::WordType singleWord = 0; 1601 APInt::WordType carry = APInt::tcDecrement(&singleWord, 1); 1602 EXPECT_EQ(carry, APInt::WordType(1)); 1603 EXPECT_EQ(singleWord, ~APInt::WordType(0)); 1604 } 1605 1606 // Test multiword decrement. 1607 1608 // No across word borrow, no out borrow. 1609 { 1610 APInt::WordType test[4] = {0x1, 0x1, 0x1, 0x1}; 1611 APInt::WordType expected[4] = {0x0, 0x1, 0x1, 0x1}; 1612 APInt::tcDecrement(test, 4); 1613 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1614 } 1615 1616 // 1 across word borrow, no out borrow. 1617 { 1618 APInt::WordType test[4] = {0x0, 0xF, 0x1, 0x1}; 1619 APInt::WordType expected[4] = {~APInt::WordType(0), 0xE, 0x1, 0x1}; 1620 APInt::WordType carry = APInt::tcDecrement(test, 4); 1621 EXPECT_EQ(carry, APInt::WordType(0)); 1622 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1623 } 1624 1625 // 2 across word borrow, no out borrow. 1626 { 1627 APInt::WordType test[4] = {0x0, 0x0, 0xC, 0x1}; 1628 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), 0xB, 0x1}; 1629 APInt::WordType carry = APInt::tcDecrement(test, 4); 1630 EXPECT_EQ(carry, APInt::WordType(0)); 1631 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1632 } 1633 1634 // 3 across word borrow, no out borrow. 1635 { 1636 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x1}; 1637 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), 0x0}; 1638 APInt::WordType carry = APInt::tcDecrement(test, 4); 1639 EXPECT_EQ(carry, APInt::WordType(0)); 1640 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1641 } 1642 1643 // 3 across word borrow, with out borrow. 1644 { 1645 APInt::WordType test[4] = {0x0, 0x0, 0x0, 0x0}; 1646 APInt::WordType expected[4] = {~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0), ~APInt::WordType(0)}; 1647 APInt::WordType carry = APInt::tcDecrement(test, 4); 1648 EXPECT_EQ(carry, APInt::WordType(1)); 1649 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1650 } 1651 } 1652 1653 TEST(APIntTest, arrayAccess) { 1654 // Single word check. 1655 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1656 APInt A1(64, E1); 1657 for (unsigned i = 0, e = 64; i < e; ++i) { 1658 EXPECT_EQ(bool(E1 & (1ULL << i)), 1659 A1[i]); 1660 } 1661 1662 // Multiword check. 1663 APInt::WordType E2[4] = { 1664 0xEB6EB136591CBA21ULL, 1665 0x7B9358BD6A33F10AULL, 1666 0x7E7FFA5EADD8846ULL, 1667 0x305F341CA00B613DULL 1668 }; 1669 APInt A2(APInt::APINT_BITS_PER_WORD*4, E2); 1670 for (unsigned i = 0; i < 4; ++i) { 1671 for (unsigned j = 0; j < APInt::APINT_BITS_PER_WORD; ++j) { 1672 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1673 A2[i*APInt::APINT_BITS_PER_WORD + j]); 1674 } 1675 } 1676 } 1677 1678 TEST(APIntTest, LargeAPIntConstruction) { 1679 // Check that we can properly construct very large APInt. It is very 1680 // unlikely that people will ever do this, but it is a legal input, 1681 // so we should not crash on it. 1682 APInt A9(UINT32_MAX, 0); 1683 EXPECT_FALSE(A9.getBoolValue()); 1684 } 1685 1686 TEST(APIntTest, nearestLogBase2) { 1687 // Single word check. 1688 1689 // Test round up. 1690 uint64_t I1 = 0x1800001; 1691 APInt A1(64, I1); 1692 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1693 1694 // Test round down. 1695 uint64_t I2 = 0x1000011; 1696 APInt A2(64, I2); 1697 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1698 1699 // Test ties round up. 1700 uint64_t I3 = 0x1800000; 1701 APInt A3(64, I3); 1702 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1703 1704 // Multiple word check. 1705 1706 // Test round up. 1707 APInt::WordType I4[4] = {0x0, 0xF, 0x18, 0x0}; 1708 APInt A4(APInt::APINT_BITS_PER_WORD*4, I4); 1709 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1710 1711 // Test round down. 1712 APInt::WordType I5[4] = {0x0, 0xF, 0x10, 0x0}; 1713 APInt A5(APInt::APINT_BITS_PER_WORD*4, I5); 1714 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1715 1716 // Test ties round up. 1717 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1718 APInt A6(APInt::APINT_BITS_PER_WORD*4, I6); 1719 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1720 1721 // Test BitWidth == 1 special cases. 1722 APInt A7(1, 1); 1723 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1724 APInt A8(1, 0); 1725 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1726 1727 // Test the zero case when we have a bit width large enough such 1728 // that the bit width is larger than UINT32_MAX-1. 1729 APInt A9(UINT32_MAX, 0); 1730 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1731 } 1732 1733 TEST(APIntTest, IsSplat) { 1734 APInt A(32, 0x01010101); 1735 EXPECT_FALSE(A.isSplat(1)); 1736 EXPECT_FALSE(A.isSplat(2)); 1737 EXPECT_FALSE(A.isSplat(4)); 1738 EXPECT_TRUE(A.isSplat(8)); 1739 EXPECT_TRUE(A.isSplat(16)); 1740 EXPECT_TRUE(A.isSplat(32)); 1741 1742 APInt B(24, 0xAAAAAA); 1743 EXPECT_FALSE(B.isSplat(1)); 1744 EXPECT_TRUE(B.isSplat(2)); 1745 EXPECT_TRUE(B.isSplat(4)); 1746 EXPECT_TRUE(B.isSplat(8)); 1747 EXPECT_TRUE(B.isSplat(24)); 1748 1749 APInt C(24, 0xABAAAB); 1750 EXPECT_FALSE(C.isSplat(1)); 1751 EXPECT_FALSE(C.isSplat(2)); 1752 EXPECT_FALSE(C.isSplat(4)); 1753 EXPECT_FALSE(C.isSplat(8)); 1754 EXPECT_TRUE(C.isSplat(24)); 1755 1756 APInt D(32, 0xABBAABBA); 1757 EXPECT_FALSE(D.isSplat(1)); 1758 EXPECT_FALSE(D.isSplat(2)); 1759 EXPECT_FALSE(D.isSplat(4)); 1760 EXPECT_FALSE(D.isSplat(8)); 1761 EXPECT_TRUE(D.isSplat(16)); 1762 EXPECT_TRUE(D.isSplat(32)); 1763 1764 APInt E(32, 0); 1765 EXPECT_TRUE(E.isSplat(1)); 1766 EXPECT_TRUE(E.isSplat(2)); 1767 EXPECT_TRUE(E.isSplat(4)); 1768 EXPECT_TRUE(E.isSplat(8)); 1769 EXPECT_TRUE(E.isSplat(16)); 1770 EXPECT_TRUE(E.isSplat(32)); 1771 } 1772 1773 TEST(APIntTest, isMask) { 1774 EXPECT_FALSE(APInt(32, 0x01010101).isMask()); 1775 EXPECT_FALSE(APInt(32, 0xf0000000).isMask()); 1776 EXPECT_FALSE(APInt(32, 0xffff0000).isMask()); 1777 EXPECT_FALSE(APInt(32, 0xff << 1).isMask()); 1778 1779 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1780 EXPECT_FALSE(APInt(N, 0).isMask()); 1781 1782 APInt One(N, 1); 1783 for (int I = 1; I <= N; ++I) { 1784 APInt MaskVal = One.shl(I) - 1; 1785 EXPECT_TRUE(MaskVal.isMask()); 1786 EXPECT_TRUE(MaskVal.isMask(I)); 1787 } 1788 } 1789 } 1790 1791 TEST(APIntTest, isShiftedMask) { 1792 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask()); 1793 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask()); 1794 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask()); 1795 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask()); 1796 1797 unsigned MaskIdx, MaskLen; 1798 EXPECT_FALSE(APInt(32, 0x01010101).isShiftedMask(MaskIdx, MaskLen)); 1799 EXPECT_TRUE(APInt(32, 0xf0000000).isShiftedMask(MaskIdx, MaskLen)); 1800 EXPECT_EQ(28, (int)MaskIdx); 1801 EXPECT_EQ(4, (int)MaskLen); 1802 EXPECT_TRUE(APInt(32, 0xffff0000).isShiftedMask(MaskIdx, MaskLen)); 1803 EXPECT_EQ(16, (int)MaskIdx); 1804 EXPECT_EQ(16, (int)MaskLen); 1805 EXPECT_TRUE(APInt(32, 0xff << 1).isShiftedMask(MaskIdx, MaskLen)); 1806 EXPECT_EQ(1, (int)MaskIdx); 1807 EXPECT_EQ(8, (int)MaskLen); 1808 1809 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1810 EXPECT_FALSE(APInt(N, 0).isShiftedMask()); 1811 EXPECT_FALSE(APInt(N, 0).isShiftedMask(MaskIdx, MaskLen)); 1812 1813 APInt One(N, 1); 1814 for (int I = 1; I < N; ++I) { 1815 APInt MaskVal = One.shl(I) - 1; 1816 EXPECT_TRUE(MaskVal.isShiftedMask()); 1817 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1818 EXPECT_EQ(0, (int)MaskIdx); 1819 EXPECT_EQ(I, (int)MaskLen); 1820 } 1821 for (int I = 1; I < N - 1; ++I) { 1822 APInt MaskVal = One.shl(I); 1823 EXPECT_TRUE(MaskVal.isShiftedMask()); 1824 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1825 EXPECT_EQ(I, (int)MaskIdx); 1826 EXPECT_EQ(1, (int)MaskLen); 1827 } 1828 for (int I = 1; I < N; ++I) { 1829 APInt MaskVal = APInt::getHighBitsSet(N, I); 1830 EXPECT_TRUE(MaskVal.isShiftedMask()); 1831 EXPECT_TRUE(MaskVal.isShiftedMask(MaskIdx, MaskLen)); 1832 EXPECT_EQ(N - I, (int)MaskIdx); 1833 EXPECT_EQ(I, (int)MaskLen); 1834 } 1835 } 1836 } 1837 1838 TEST(APIntTest, isOneBitSet) { 1839 EXPECT_FALSE(APInt(5, 0x00).isOneBitSet(0)); 1840 EXPECT_FALSE(APInt(5, 0x02).isOneBitSet(0)); 1841 EXPECT_FALSE(APInt(5, 0x03).isOneBitSet(0)); 1842 EXPECT_TRUE(APInt(5, 0x02).isOneBitSet(1)); 1843 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isOneBitSet(31)); 1844 1845 EXPECT_TRUE(APInt::getOneBitSet(255, 13).isOneBitSet(13)); 1846 } 1847 1848 TEST(APIntTest, isPowerOf2) { 1849 EXPECT_FALSE(APInt(5, 0x00).isPowerOf2()); 1850 EXPECT_FALSE(APInt(32, 0x11).isPowerOf2()); 1851 EXPECT_TRUE(APInt(17, 0x01).isPowerOf2()); 1852 EXPECT_TRUE(APInt(32, (unsigned)(0xffu << 31)).isPowerOf2()); 1853 1854 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1855 EXPECT_FALSE(APInt(N, 0).isPowerOf2()); 1856 EXPECT_TRUE(APInt::getSignedMinValue(N).isPowerOf2()); 1857 1858 APInt One(N, 1); 1859 for (int I = 1; I < N - 1; ++I) { 1860 EXPECT_TRUE(APInt::getOneBitSet(N, I).isPowerOf2()); 1861 1862 APInt MaskVal = One.shl(I); 1863 EXPECT_TRUE(MaskVal.isPowerOf2()); 1864 } 1865 } 1866 } 1867 1868 TEST(APIntTest, isNegatedPowerOf2) { 1869 EXPECT_FALSE(APInt(5, 0x00).isNegatedPowerOf2()); 1870 EXPECT_TRUE(APInt(15, 0x7ffe).isNegatedPowerOf2()); 1871 EXPECT_TRUE(APInt(16, 0xfffc).isNegatedPowerOf2()); 1872 EXPECT_TRUE(APInt(32, 0xffffffff).isNegatedPowerOf2()); 1873 1874 for (int N : {1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256}) { 1875 EXPECT_FALSE(APInt(N, 0).isNegatedPowerOf2()); 1876 EXPECT_TRUE(APInt::getAllOnes(N).isNegatedPowerOf2()); 1877 EXPECT_TRUE(APInt::getSignedMinValue(N).isNegatedPowerOf2()); 1878 EXPECT_TRUE((-APInt::getSignedMinValue(N)).isNegatedPowerOf2()); 1879 1880 APInt One(N, 1); 1881 for (int I = 1; I < N - 1; ++I) { 1882 EXPECT_FALSE(APInt::getOneBitSet(N, I).isNegatedPowerOf2()); 1883 EXPECT_TRUE((-APInt::getOneBitSet(N, I)).isNegatedPowerOf2()); 1884 1885 APInt MaskVal = One.shl(I); 1886 EXPECT_TRUE((-MaskVal).isNegatedPowerOf2()); 1887 1888 APInt ShiftMaskVal = One.getHighBitsSet(N, I); 1889 EXPECT_TRUE(ShiftMaskVal.isNegatedPowerOf2()); 1890 } 1891 } 1892 } 1893 1894 TEST(APIntTest, isAligned) { 1895 struct { 1896 uint64_t alignment; 1897 uint64_t offset; 1898 bool isAligned; 1899 } Tests[] = { 1900 {1, 0, true}, {1, 1, true}, {1, 5, true}, {2, 0, true}, 1901 {2, 1, false}, {2, 2, true}, {2, 7, false}, {2, 16, true}, 1902 {4, 0, true}, {4, 1, false}, {4, 4, true}, {4, 6, false}, 1903 }; 1904 for (const auto &T : Tests) 1905 EXPECT_EQ(APInt(32, T.offset).isAligned(Align(T.alignment)), T.isAligned); 1906 // Tests for APInt that can't represent the alignment. 1907 // Here APInt(4, I) can represent values from 0 to 15. 1908 EXPECT_TRUE(APInt(4, 0).isAligned(Align(32))); // zero is always aligned. 1909 for (int I = 1; I < 16; ++I) 1910 EXPECT_FALSE(APInt(4, I).isAligned(Align(32))); 1911 } 1912 1913 // Test that self-move works with EXPENSIVE_CHECKS. It calls std::shuffle which 1914 // does self-move on some platforms. 1915 #ifdef EXPENSIVE_CHECKS 1916 #if defined(__clang__) 1917 // Disable the pragma warning from versions of Clang without -Wself-move 1918 #pragma clang diagnostic push 1919 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1920 // Disable the warning that triggers on exactly what is being tested. 1921 #pragma clang diagnostic push 1922 #pragma clang diagnostic ignored "-Wself-move" 1923 #endif 1924 TEST(APIntTest, SelfMoveAssignment) { 1925 APInt X(32, 0xdeadbeef); 1926 X = std::move(X); 1927 EXPECT_EQ(32u, X.getBitWidth()); 1928 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1929 1930 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1931 APInt Y(128, Bits); 1932 Y = std::move(Y); 1933 EXPECT_EQ(128u, Y.getBitWidth()); 1934 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1935 const uint64_t *Raw = Y.getRawData(); 1936 EXPECT_EQ(2u, Y.getNumWords()); 1937 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1938 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1939 } 1940 #if defined(__clang__) 1941 #pragma clang diagnostic pop 1942 #pragma clang diagnostic pop 1943 #endif 1944 #endif // EXPENSIVE_CHECKS 1945 1946 TEST(APIntTest, byteSwap) { 1947 EXPECT_EQ(0x00000000, APInt(16, 0x0000).byteSwap()); 1948 EXPECT_EQ(0x0000010f, APInt(16, 0x0f01).byteSwap()); 1949 EXPECT_EQ(0x00ff8000, APInt(24, 0x0080ff).byteSwap()); 1950 EXPECT_EQ(0x117700ff, APInt(32, 0xff007711).byteSwap()); 1951 EXPECT_EQ(0x228811aaffULL, APInt(40, 0xffaa118822ULL).byteSwap()); 1952 EXPECT_EQ(0x050403020100ULL, APInt(48, 0x000102030405ULL).byteSwap()); 1953 EXPECT_EQ(0xff050403020100ULL, APInt(56, 0x000102030405ffULL).byteSwap()); 1954 EXPECT_EQ(0xff050403020100aaULL, APInt(64, 0xaa000102030405ffULL).byteSwap()); 1955 1956 for (unsigned N : {16, 24, 32, 48, 56, 64, 72, 80, 96, 112, 128, 248, 256, 1957 1024, 1032, 1040}) { 1958 for (unsigned I = 0; I < N; I += 8) { 1959 APInt X = APInt::getBitsSet(N, I, I + 8); 1960 APInt Y = APInt::getBitsSet(N, N - I - 8, N - I); 1961 EXPECT_EQ(Y, X.byteSwap()); 1962 EXPECT_EQ(X, Y.byteSwap()); 1963 } 1964 } 1965 } 1966 1967 TEST(APIntTest, reverseBits) { 1968 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1969 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1970 1971 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1972 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1973 1974 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1975 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1976 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1977 1978 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1979 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1980 1981 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1982 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1983 1984 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1985 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1986 1987 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1988 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1989 1990 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1991 1992 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1993 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1994 1995 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1996 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1997 1998 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1999 63, 64, 65, 127, 128, 257, 1024 }) { 2000 for (unsigned I = 0; I < N; ++I) { 2001 APInt X = APInt::getOneBitSet(N, I); 2002 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 2003 EXPECT_EQ(Y, X.reverseBits()); 2004 EXPECT_EQ(X, Y.reverseBits()); 2005 } 2006 } 2007 } 2008 2009 TEST(APIntTest, insertBits) { 2010 APInt iSrc(31, 0x00123456); 2011 2012 // Direct copy. 2013 APInt i31(31, 0x76543210ull); 2014 i31.insertBits(iSrc, 0); 2015 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2016 2017 // Single word src/dst insertion. 2018 APInt i63(63, 0x01234567FFFFFFFFull); 2019 i63.insertBits(iSrc, 4); 2020 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2021 2022 // Zero width insert is a noop. 2023 i31.insertBits(APInt::getZeroWidth(), 1); 2024 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2025 2026 // Insert single word src into one word of dst. 2027 APInt i120(120, UINT64_MAX, true); 2028 i120.insertBits(iSrc, 8); 2029 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2030 2031 // Insert single word src into two words of dst. 2032 APInt i127(127, UINT64_MAX, true); 2033 i127.insertBits(iSrc, 48); 2034 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2035 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2036 2037 // Insert on word boundaries. 2038 APInt i128(128, 0); 2039 i128.insertBits(APInt(64, UINT64_MAX, true), 0); 2040 i128.insertBits(APInt(64, UINT64_MAX, true), 64); 2041 EXPECT_EQ(-1, i128.getSExtValue()); 2042 2043 APInt i256(256, UINT64_MAX, true); 2044 i256.insertBits(APInt(65, 0), 0); 2045 i256.insertBits(APInt(69, 0), 64); 2046 i256.insertBits(APInt(128, 0), 128); 2047 EXPECT_EQ(0u, i256.getSExtValue()); 2048 2049 APInt i257(257, 0); 2050 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2051 EXPECT_EQ(i257.extractBits(64, 0).getZExtValue(), 0x0000000000000000ull); 2052 EXPECT_EQ(i257.extractBits(64, 64).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2053 EXPECT_EQ(i257.extractBits(64, 128).getZExtValue(), 0x00000000FFFFFFFFull); 2054 EXPECT_EQ(i257.extractBits(65, 192).getZExtValue(), 0x0000000000000000ull); 2055 2056 // General insertion. 2057 APInt i260(260, UINT64_MAX, true); 2058 i260.insertBits(APInt(129, 1ull << 48), 15); 2059 EXPECT_EQ(i260.extractBits(64, 0).getZExtValue(), 0x8000000000007FFFull); 2060 EXPECT_EQ(i260.extractBits(64, 64).getZExtValue(), 0x0000000000000000ull); 2061 EXPECT_EQ(i260.extractBits(64, 128).getZExtValue(), 0xFFFFFFFFFFFF0000ull); 2062 EXPECT_EQ(i260.extractBits(64, 192).getZExtValue(), 0xFFFFFFFFFFFFFFFFull); 2063 EXPECT_EQ(i260.extractBits(4, 256).getZExtValue(), 0x000000000000000Full); 2064 } 2065 2066 TEST(APIntTest, insertBitsUInt64) { 2067 // Tests cloned from insertBits but adapted to the numBits <= 64 constraint 2068 uint64_t iSrc = 0x00123456; 2069 2070 // Direct copy. 2071 APInt i31(31, 0x76543210ull); 2072 i31.insertBits(iSrc, 0, 31); 2073 EXPECT_EQ(static_cast<int64_t>(0x00123456ull), i31.getSExtValue()); 2074 2075 // Single word src/dst insertion. 2076 APInt i63(63, 0x01234567FFFFFFFFull); 2077 i63.insertBits(iSrc, 4, 31); 2078 EXPECT_EQ(static_cast<int64_t>(0x012345600123456Full), i63.getSExtValue()); 2079 2080 // Insert single word src into one word of dst. 2081 APInt i120(120, UINT64_MAX, true); 2082 i120.insertBits(iSrc, 8, 31); 2083 EXPECT_EQ(static_cast<int64_t>(0xFFFFFF80123456FFull), i120.getSExtValue()); 2084 2085 // Insert single word src into two words of dst. 2086 APInt i127(127, UINT64_MAX, true); 2087 i127.insertBits(iSrc, 48, 31); 2088 EXPECT_EQ(i127.extractBits(64, 0).getZExtValue(), 0x3456FFFFFFFFFFFFull); 2089 EXPECT_EQ(i127.extractBits(63, 64).getZExtValue(), 0x7FFFFFFFFFFF8012ull); 2090 2091 // Insert on word boundaries. 2092 APInt i128(128, 0); 2093 i128.insertBits(UINT64_MAX, 0, 64); 2094 i128.insertBits(UINT64_MAX, 64, 64); 2095 EXPECT_EQ(-1, i128.getSExtValue()); 2096 2097 APInt i256(256, UINT64_MAX, true); 2098 i256.insertBits(0, 0, 64); 2099 i256.insertBits(0, 64, 1); 2100 i256.insertBits(0, 64, 64); 2101 i256.insertBits(0, 128, 5); 2102 i256.insertBits(0, 128, 64); 2103 i256.insertBits(0, 192, 64); 2104 EXPECT_EQ(0u, i256.getSExtValue()); 2105 2106 APInt i257(257, 0); 2107 i257.insertBits(APInt(96, UINT64_MAX, true), 64); 2108 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 0), 0x0000000000000000ull); 2109 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 64), 0xFFFFFFFFFFFFFFFFull); 2110 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 128), 0x00000000FFFFFFFFull); 2111 EXPECT_EQ(i257.extractBitsAsZExtValue(64, 192), 0x0000000000000000ull); 2112 EXPECT_EQ(i257.extractBitsAsZExtValue(1, 256), 0x0000000000000000ull); 2113 2114 // General insertion. 2115 APInt i260(260, UINT64_MAX, true); 2116 i260.insertBits(APInt(129, 1ull << 48), 15); 2117 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 0), 0x8000000000007FFFull); 2118 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 64), 0x0000000000000000ull); 2119 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 128), 0xFFFFFFFFFFFF0000ull); 2120 EXPECT_EQ(i260.extractBitsAsZExtValue(64, 192), 0xFFFFFFFFFFFFFFFFull); 2121 EXPECT_EQ(i260.extractBitsAsZExtValue(4, 256), 0x000000000000000Full); 2122 } 2123 2124 TEST(APIntTest, extractBits) { 2125 APInt i32(32, 0x1234567); 2126 EXPECT_EQ(0x3456, i32.extractBits(16, 4)); 2127 2128 APInt i64(64, 0x01234567FFFFFFFFull); 2129 EXPECT_EQ(0xFFFFFFFF, i64.extractBits(32, 0)); 2130 EXPECT_EQ(0xFFFFFFFF, i64.trunc(32)); 2131 EXPECT_EQ(0x01234567, i64.extractBits(32, 32)); 2132 EXPECT_EQ(0x01234567, i64.lshr(32).trunc(32)); 2133 2134 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2135 EXPECT_EQ(0xFFu, i257.extractBits(16, 0)); 2136 EXPECT_EQ(0xFFu, i257.lshr(0).trunc(16)); 2137 EXPECT_EQ((0xFFu >> 1), i257.extractBits(16, 1)); 2138 EXPECT_EQ((0xFFu >> 1), i257.lshr(1).trunc(16)); 2139 EXPECT_EQ(-1, i257.extractBits(32, 64).getSExtValue()); 2140 EXPECT_EQ(-1, i257.lshr(64).trunc(32).getSExtValue()); 2141 EXPECT_EQ(-1, i257.extractBits(128, 128).getSExtValue()); 2142 EXPECT_EQ(-1, i257.lshr(128).trunc(128).getSExtValue()); 2143 EXPECT_EQ(-1, i257.extractBits(66, 191).getSExtValue()); 2144 EXPECT_EQ(-1, i257.lshr(191).trunc(66).getSExtValue()); 2145 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2146 i257.extractBits(128, 1).getSExtValue()); 2147 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2148 i257.lshr(1).trunc(128).getSExtValue()); 2149 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2150 i257.extractBits(129, 1).getSExtValue()); 2151 EXPECT_EQ(static_cast<int64_t>(0xFFFFFFFFFF80007Full), 2152 i257.lshr(1).trunc(129).getSExtValue()); 2153 2154 EXPECT_EQ(APInt(48, 0), 2155 APInt(144, "281474976710655", 10).extractBits(48, 48)); 2156 EXPECT_EQ(APInt(48, 0), 2157 APInt(144, "281474976710655", 10).lshr(48).trunc(48)); 2158 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2159 APInt(144, "281474976710655", 10).extractBits(48, 0)); 2160 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2161 APInt(144, "281474976710655", 10).lshr(0).trunc(48)); 2162 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2163 APInt(144, "281474976710655", 10).extractBits(48, 1)); 2164 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2165 APInt(144, "281474976710655", 10).lshr(1).trunc(48)); 2166 } 2167 2168 TEST(APIntTest, extractBitsAsZExtValue) { 2169 // Tests based on extractBits 2170 APInt i32(32, 0x1234567); 2171 EXPECT_EQ(0x3456u, i32.extractBitsAsZExtValue(16, 4)); 2172 2173 APInt i257(257, 0xFFFFFFFFFF0000FFull, true); 2174 EXPECT_EQ(0xFFu, i257.extractBitsAsZExtValue(16, 0)); 2175 EXPECT_EQ((0xFFu >> 1), i257.extractBitsAsZExtValue(16, 1)); 2176 EXPECT_EQ(0xFFFFFFFFull, i257.extractBitsAsZExtValue(32, 64)); 2177 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 128)); 2178 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 192)); 2179 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 191)); 2180 EXPECT_EQ(0x3u, i257.extractBitsAsZExtValue(2, 255)); 2181 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2182 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2183 EXPECT_EQ(0xFFFFFFFFFF80007Full, i257.extractBitsAsZExtValue(64, 1)); 2184 EXPECT_EQ(0xFFFFFFFFFFFFFFFFull, i257.extractBitsAsZExtValue(64, 65)); 2185 EXPECT_EQ(0x1ull, i257.extractBitsAsZExtValue(1, 129)); 2186 2187 EXPECT_EQ(APInt(48, 0), 2188 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 48)); 2189 EXPECT_EQ(APInt(48, 0x0000ffffffffffffull), 2190 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 0)); 2191 EXPECT_EQ(APInt(48, 0x00007fffffffffffull), 2192 APInt(144, "281474976710655", 10).extractBitsAsZExtValue(48, 1)); 2193 } 2194 2195 TEST(APIntTest, getLowBitsSet) { 2196 APInt i128lo64 = APInt::getLowBitsSet(128, 64); 2197 EXPECT_EQ(0u, i128lo64.countl_one()); 2198 EXPECT_EQ(64u, i128lo64.countl_zero()); 2199 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2200 EXPECT_EQ(0u, i128lo64.countr_zero()); 2201 EXPECT_EQ(64u, i128lo64.countr_one()); 2202 EXPECT_EQ(64u, i128lo64.popcount()); 2203 } 2204 2205 TEST(APIntTest, getBitsSet) { 2206 APInt i64hi1lo1 = APInt::getBitsSet(64, 1, 63); 2207 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2208 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2209 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2210 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2211 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2212 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2213 2214 APInt i127hi1lo1 = APInt::getBitsSet(127, 1, 126); 2215 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2216 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2217 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2218 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2219 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2220 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2221 } 2222 2223 TEST(APIntTest, getBitsSetWithWrap) { 2224 APInt i64hi1lo1 = APInt::getBitsSetWithWrap(64, 1, 63); 2225 EXPECT_EQ(0u, i64hi1lo1.countl_one()); 2226 EXPECT_EQ(1u, i64hi1lo1.countl_zero()); 2227 EXPECT_EQ(63u, i64hi1lo1.getActiveBits()); 2228 EXPECT_EQ(1u, i64hi1lo1.countr_zero()); 2229 EXPECT_EQ(0u, i64hi1lo1.countr_one()); 2230 EXPECT_EQ(62u, i64hi1lo1.popcount()); 2231 2232 APInt i127hi1lo1 = APInt::getBitsSetWithWrap(127, 1, 126); 2233 EXPECT_EQ(0u, i127hi1lo1.countl_one()); 2234 EXPECT_EQ(1u, i127hi1lo1.countl_zero()); 2235 EXPECT_EQ(126u, i127hi1lo1.getActiveBits()); 2236 EXPECT_EQ(1u, i127hi1lo1.countr_zero()); 2237 EXPECT_EQ(0u, i127hi1lo1.countr_one()); 2238 EXPECT_EQ(125u, i127hi1lo1.popcount()); 2239 2240 APInt i64hi1lo1wrap = APInt::getBitsSetWithWrap(64, 63, 1); 2241 EXPECT_EQ(1u, i64hi1lo1wrap.countl_one()); 2242 EXPECT_EQ(0u, i64hi1lo1wrap.countl_zero()); 2243 EXPECT_EQ(64u, i64hi1lo1wrap.getActiveBits()); 2244 EXPECT_EQ(0u, i64hi1lo1wrap.countr_zero()); 2245 EXPECT_EQ(1u, i64hi1lo1wrap.countr_one()); 2246 EXPECT_EQ(2u, i64hi1lo1wrap.popcount()); 2247 2248 APInt i127hi1lo1wrap = APInt::getBitsSetWithWrap(127, 126, 1); 2249 EXPECT_EQ(1u, i127hi1lo1wrap.countl_one()); 2250 EXPECT_EQ(0u, i127hi1lo1wrap.countl_zero()); 2251 EXPECT_EQ(127u, i127hi1lo1wrap.getActiveBits()); 2252 EXPECT_EQ(0u, i127hi1lo1wrap.countr_zero()); 2253 EXPECT_EQ(1u, i127hi1lo1wrap.countr_one()); 2254 EXPECT_EQ(2u, i127hi1lo1wrap.popcount()); 2255 2256 APInt i32hiequallowrap = APInt::getBitsSetWithWrap(32, 10, 10); 2257 EXPECT_EQ(32u, i32hiequallowrap.countl_one()); 2258 EXPECT_EQ(0u, i32hiequallowrap.countl_zero()); 2259 EXPECT_EQ(32u, i32hiequallowrap.getActiveBits()); 2260 EXPECT_EQ(0u, i32hiequallowrap.countr_zero()); 2261 EXPECT_EQ(32u, i32hiequallowrap.countr_one()); 2262 EXPECT_EQ(32u, i32hiequallowrap.popcount()); 2263 } 2264 2265 TEST(APIntTest, getHighBitsSet) { 2266 APInt i64hi32 = APInt::getHighBitsSet(64, 32); 2267 EXPECT_EQ(32u, i64hi32.countl_one()); 2268 EXPECT_EQ(0u, i64hi32.countl_zero()); 2269 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2270 EXPECT_EQ(32u, i64hi32.countr_zero()); 2271 EXPECT_EQ(0u, i64hi32.countr_one()); 2272 EXPECT_EQ(32u, i64hi32.popcount()); 2273 } 2274 2275 TEST(APIntTest, getBitsSetFrom) { 2276 APInt i64hi31 = APInt::getBitsSetFrom(64, 33); 2277 EXPECT_EQ(31u, i64hi31.countl_one()); 2278 EXPECT_EQ(0u, i64hi31.countl_zero()); 2279 EXPECT_EQ(64u, i64hi31.getActiveBits()); 2280 EXPECT_EQ(33u, i64hi31.countr_zero()); 2281 EXPECT_EQ(0u, i64hi31.countr_one()); 2282 EXPECT_EQ(31u, i64hi31.popcount()); 2283 } 2284 2285 TEST(APIntTest, setLowBits) { 2286 APInt i64lo32(64, 0); 2287 i64lo32.setLowBits(32); 2288 EXPECT_EQ(0u, i64lo32.countl_one()); 2289 EXPECT_EQ(32u, i64lo32.countl_zero()); 2290 EXPECT_EQ(32u, i64lo32.getActiveBits()); 2291 EXPECT_EQ(0u, i64lo32.countr_zero()); 2292 EXPECT_EQ(32u, i64lo32.countr_one()); 2293 EXPECT_EQ(32u, i64lo32.popcount()); 2294 2295 APInt i128lo64(128, 0); 2296 i128lo64.setLowBits(64); 2297 EXPECT_EQ(0u, i128lo64.countl_one()); 2298 EXPECT_EQ(64u, i128lo64.countl_zero()); 2299 EXPECT_EQ(64u, i128lo64.getActiveBits()); 2300 EXPECT_EQ(0u, i128lo64.countr_zero()); 2301 EXPECT_EQ(64u, i128lo64.countr_one()); 2302 EXPECT_EQ(64u, i128lo64.popcount()); 2303 2304 APInt i128lo24(128, 0); 2305 i128lo24.setLowBits(24); 2306 EXPECT_EQ(0u, i128lo24.countl_one()); 2307 EXPECT_EQ(104u, i128lo24.countl_zero()); 2308 EXPECT_EQ(24u, i128lo24.getActiveBits()); 2309 EXPECT_EQ(0u, i128lo24.countr_zero()); 2310 EXPECT_EQ(24u, i128lo24.countr_one()); 2311 EXPECT_EQ(24u, i128lo24.popcount()); 2312 2313 APInt i128lo104(128, 0); 2314 i128lo104.setLowBits(104); 2315 EXPECT_EQ(0u, i128lo104.countl_one()); 2316 EXPECT_EQ(24u, i128lo104.countl_zero()); 2317 EXPECT_EQ(104u, i128lo104.getActiveBits()); 2318 EXPECT_EQ(0u, i128lo104.countr_zero()); 2319 EXPECT_EQ(104u, i128lo104.countr_one()); 2320 EXPECT_EQ(104u, i128lo104.popcount()); 2321 2322 APInt i128lo0(128, 0); 2323 i128lo0.setLowBits(0); 2324 EXPECT_EQ(0u, i128lo0.countl_one()); 2325 EXPECT_EQ(128u, i128lo0.countl_zero()); 2326 EXPECT_EQ(0u, i128lo0.getActiveBits()); 2327 EXPECT_EQ(128u, i128lo0.countr_zero()); 2328 EXPECT_EQ(0u, i128lo0.countr_one()); 2329 EXPECT_EQ(0u, i128lo0.popcount()); 2330 2331 APInt i80lo79(80, 0); 2332 i80lo79.setLowBits(79); 2333 EXPECT_EQ(0u, i80lo79.countl_one()); 2334 EXPECT_EQ(1u, i80lo79.countl_zero()); 2335 EXPECT_EQ(79u, i80lo79.getActiveBits()); 2336 EXPECT_EQ(0u, i80lo79.countr_zero()); 2337 EXPECT_EQ(79u, i80lo79.countr_one()); 2338 EXPECT_EQ(79u, i80lo79.popcount()); 2339 } 2340 2341 TEST(APIntTest, setHighBits) { 2342 APInt i64hi32(64, 0); 2343 i64hi32.setHighBits(32); 2344 EXPECT_EQ(32u, i64hi32.countl_one()); 2345 EXPECT_EQ(0u, i64hi32.countl_zero()); 2346 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2347 EXPECT_EQ(32u, i64hi32.countr_zero()); 2348 EXPECT_EQ(0u, i64hi32.countr_one()); 2349 EXPECT_EQ(32u, i64hi32.popcount()); 2350 2351 APInt i128hi64(128, 0); 2352 i128hi64.setHighBits(64); 2353 EXPECT_EQ(64u, i128hi64.countl_one()); 2354 EXPECT_EQ(0u, i128hi64.countl_zero()); 2355 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2356 EXPECT_EQ(64u, i128hi64.countr_zero()); 2357 EXPECT_EQ(0u, i128hi64.countr_one()); 2358 EXPECT_EQ(64u, i128hi64.popcount()); 2359 2360 APInt i128hi24(128, 0); 2361 i128hi24.setHighBits(24); 2362 EXPECT_EQ(24u, i128hi24.countl_one()); 2363 EXPECT_EQ(0u, i128hi24.countl_zero()); 2364 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2365 EXPECT_EQ(104u, i128hi24.countr_zero()); 2366 EXPECT_EQ(0u, i128hi24.countr_one()); 2367 EXPECT_EQ(24u, i128hi24.popcount()); 2368 2369 APInt i128hi104(128, 0); 2370 i128hi104.setHighBits(104); 2371 EXPECT_EQ(104u, i128hi104.countl_one()); 2372 EXPECT_EQ(0u, i128hi104.countl_zero()); 2373 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2374 EXPECT_EQ(24u, i128hi104.countr_zero()); 2375 EXPECT_EQ(0u, i128hi104.countr_one()); 2376 EXPECT_EQ(104u, i128hi104.popcount()); 2377 2378 APInt i128hi0(128, 0); 2379 i128hi0.setHighBits(0); 2380 EXPECT_EQ(0u, i128hi0.countl_one()); 2381 EXPECT_EQ(128u, i128hi0.countl_zero()); 2382 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2383 EXPECT_EQ(128u, i128hi0.countr_zero()); 2384 EXPECT_EQ(0u, i128hi0.countr_one()); 2385 EXPECT_EQ(0u, i128hi0.popcount()); 2386 2387 APInt i80hi1(80, 0); 2388 i80hi1.setHighBits(1); 2389 EXPECT_EQ(1u, i80hi1.countl_one()); 2390 EXPECT_EQ(0u, i80hi1.countl_zero()); 2391 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2392 EXPECT_EQ(79u, i80hi1.countr_zero()); 2393 EXPECT_EQ(0u, i80hi1.countr_one()); 2394 EXPECT_EQ(1u, i80hi1.popcount()); 2395 2396 APInt i32hi16(32, 0); 2397 i32hi16.setHighBits(16); 2398 EXPECT_EQ(16u, i32hi16.countl_one()); 2399 EXPECT_EQ(0u, i32hi16.countl_zero()); 2400 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2401 EXPECT_EQ(16u, i32hi16.countr_zero()); 2402 EXPECT_EQ(0u, i32hi16.countr_one()); 2403 EXPECT_EQ(16u, i32hi16.popcount()); 2404 } 2405 2406 TEST(APIntTest, setBitsFrom) { 2407 APInt i64from63(64, 0); 2408 i64from63.setBitsFrom(63); 2409 EXPECT_EQ(1u, i64from63.countl_one()); 2410 EXPECT_EQ(0u, i64from63.countl_zero()); 2411 EXPECT_EQ(64u, i64from63.getActiveBits()); 2412 EXPECT_EQ(63u, i64from63.countr_zero()); 2413 EXPECT_EQ(0u, i64from63.countr_one()); 2414 EXPECT_EQ(1u, i64from63.popcount()); 2415 } 2416 2417 TEST(APIntTest, setAllBits) { 2418 APInt i32(32, 0); 2419 i32.setAllBits(); 2420 EXPECT_EQ(32u, i32.countl_one()); 2421 EXPECT_EQ(0u, i32.countl_zero()); 2422 EXPECT_EQ(32u, i32.getActiveBits()); 2423 EXPECT_EQ(0u, i32.countr_zero()); 2424 EXPECT_EQ(32u, i32.countr_one()); 2425 EXPECT_EQ(32u, i32.popcount()); 2426 2427 APInt i64(64, 0); 2428 i64.setAllBits(); 2429 EXPECT_EQ(64u, i64.countl_one()); 2430 EXPECT_EQ(0u, i64.countl_zero()); 2431 EXPECT_EQ(64u, i64.getActiveBits()); 2432 EXPECT_EQ(0u, i64.countr_zero()); 2433 EXPECT_EQ(64u, i64.countr_one()); 2434 EXPECT_EQ(64u, i64.popcount()); 2435 2436 APInt i96(96, 0); 2437 i96.setAllBits(); 2438 EXPECT_EQ(96u, i96.countl_one()); 2439 EXPECT_EQ(0u, i96.countl_zero()); 2440 EXPECT_EQ(96u, i96.getActiveBits()); 2441 EXPECT_EQ(0u, i96.countr_zero()); 2442 EXPECT_EQ(96u, i96.countr_one()); 2443 EXPECT_EQ(96u, i96.popcount()); 2444 2445 APInt i128(128, 0); 2446 i128.setAllBits(); 2447 EXPECT_EQ(128u, i128.countl_one()); 2448 EXPECT_EQ(0u, i128.countl_zero()); 2449 EXPECT_EQ(128u, i128.getActiveBits()); 2450 EXPECT_EQ(0u, i128.countr_zero()); 2451 EXPECT_EQ(128u, i128.countr_one()); 2452 EXPECT_EQ(128u, i128.popcount()); 2453 } 2454 2455 TEST(APIntTest, getLoBits) { 2456 APInt i32(32, 0xfa); 2457 i32.setHighBits(1); 2458 EXPECT_EQ(0xa, i32.getLoBits(4)); 2459 APInt i128(128, 0xfa); 2460 i128.setHighBits(1); 2461 EXPECT_EQ(0xa, i128.getLoBits(4)); 2462 } 2463 2464 TEST(APIntTest, getHiBits) { 2465 APInt i32(32, 0xfa); 2466 i32.setHighBits(2); 2467 EXPECT_EQ(0xc, i32.getHiBits(4)); 2468 APInt i128(128, 0xfa); 2469 i128.setHighBits(2); 2470 EXPECT_EQ(0xc, i128.getHiBits(4)); 2471 } 2472 2473 TEST(APIntTest, clearLowBits) { 2474 APInt i64hi32 = APInt::getAllOnes(64); 2475 i64hi32.clearLowBits(32); 2476 EXPECT_EQ(32u, i64hi32.countl_one()); 2477 EXPECT_EQ(0u, i64hi32.countl_zero()); 2478 EXPECT_EQ(64u, i64hi32.getActiveBits()); 2479 EXPECT_EQ(32u, i64hi32.countr_zero()); 2480 EXPECT_EQ(0u, i64hi32.countr_one()); 2481 EXPECT_EQ(32u, i64hi32.popcount()); 2482 2483 APInt i128hi64 = APInt::getAllOnes(128); 2484 i128hi64.clearLowBits(64); 2485 EXPECT_EQ(64u, i128hi64.countl_one()); 2486 EXPECT_EQ(0u, i128hi64.countl_zero()); 2487 EXPECT_EQ(128u, i128hi64.getActiveBits()); 2488 EXPECT_EQ(64u, i128hi64.countr_zero()); 2489 EXPECT_EQ(0u, i128hi64.countr_one()); 2490 EXPECT_EQ(64u, i128hi64.popcount()); 2491 2492 APInt i128hi24 = APInt::getAllOnes(128); 2493 i128hi24.clearLowBits(104); 2494 EXPECT_EQ(24u, i128hi24.countl_one()); 2495 EXPECT_EQ(0u, i128hi24.countl_zero()); 2496 EXPECT_EQ(128u, i128hi24.getActiveBits()); 2497 EXPECT_EQ(104u, i128hi24.countr_zero()); 2498 EXPECT_EQ(0u, i128hi24.countr_one()); 2499 EXPECT_EQ(24u, i128hi24.popcount()); 2500 2501 APInt i128hi104 = APInt::getAllOnes(128); 2502 i128hi104.clearLowBits(24); 2503 EXPECT_EQ(104u, i128hi104.countl_one()); 2504 EXPECT_EQ(0u, i128hi104.countl_zero()); 2505 EXPECT_EQ(128u, i128hi104.getActiveBits()); 2506 EXPECT_EQ(24u, i128hi104.countr_zero()); 2507 EXPECT_EQ(0u, i128hi104.countr_one()); 2508 EXPECT_EQ(104u, i128hi104.popcount()); 2509 2510 APInt i128hi0 = APInt::getAllOnes(128); 2511 i128hi0.clearLowBits(128); 2512 EXPECT_EQ(0u, i128hi0.countl_one()); 2513 EXPECT_EQ(128u, i128hi0.countl_zero()); 2514 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2515 EXPECT_EQ(128u, i128hi0.countr_zero()); 2516 EXPECT_EQ(0u, i128hi0.countr_one()); 2517 EXPECT_EQ(0u, i128hi0.popcount()); 2518 2519 APInt i80hi1 = APInt::getAllOnes(80); 2520 i80hi1.clearLowBits(79); 2521 EXPECT_EQ(1u, i80hi1.countl_one()); 2522 EXPECT_EQ(0u, i80hi1.countl_zero()); 2523 EXPECT_EQ(80u, i80hi1.getActiveBits()); 2524 EXPECT_EQ(79u, i80hi1.countr_zero()); 2525 EXPECT_EQ(0u, i80hi1.countr_one()); 2526 EXPECT_EQ(1u, i80hi1.popcount()); 2527 2528 APInt i32hi16 = APInt::getAllOnes(32); 2529 i32hi16.clearLowBits(16); 2530 EXPECT_EQ(16u, i32hi16.countl_one()); 2531 EXPECT_EQ(0u, i32hi16.countl_zero()); 2532 EXPECT_EQ(32u, i32hi16.getActiveBits()); 2533 EXPECT_EQ(16u, i32hi16.countr_zero()); 2534 EXPECT_EQ(0u, i32hi16.countr_one()); 2535 EXPECT_EQ(16u, i32hi16.popcount()); 2536 } 2537 2538 TEST(APIntTest, clearHighBits) { 2539 APInt i64hi32 = APInt::getAllOnes(64); 2540 i64hi32.clearHighBits(32); 2541 EXPECT_EQ(32u, i64hi32.countr_one()); 2542 EXPECT_EQ(0u, i64hi32.countr_zero()); 2543 EXPECT_EQ(32u, i64hi32.getActiveBits()); 2544 EXPECT_EQ(32u, i64hi32.countl_zero()); 2545 EXPECT_EQ(0u, i64hi32.countl_one()); 2546 EXPECT_EQ(32u, i64hi32.popcount()); 2547 2548 APInt i128hi64 = APInt::getAllOnes(128); 2549 i128hi64.clearHighBits(64); 2550 EXPECT_EQ(64u, i128hi64.countr_one()); 2551 EXPECT_EQ(0u, i128hi64.countr_zero()); 2552 EXPECT_EQ(64u, i128hi64.getActiveBits()); 2553 EXPECT_EQ(64u, i128hi64.countl_zero()); 2554 EXPECT_EQ(0u, i128hi64.countl_one()); 2555 EXPECT_EQ(64u, i128hi64.popcount()); 2556 2557 APInt i128hi24 = APInt::getAllOnes(128); 2558 i128hi24.clearHighBits(104); 2559 EXPECT_EQ(24u, i128hi24.countr_one()); 2560 EXPECT_EQ(0u, i128hi24.countr_zero()); 2561 EXPECT_EQ(24u, i128hi24.getActiveBits()); 2562 EXPECT_EQ(104u, i128hi24.countl_zero()); 2563 EXPECT_EQ(0u, i128hi24.countl_one()); 2564 EXPECT_EQ(24u, i128hi24.popcount()); 2565 2566 APInt i128hi104 = APInt::getAllOnes(128); 2567 i128hi104.clearHighBits(24); 2568 EXPECT_EQ(104u, i128hi104.countr_one()); 2569 EXPECT_EQ(0u, i128hi104.countr_zero()); 2570 EXPECT_EQ(104u, i128hi104.getActiveBits()); 2571 EXPECT_EQ(24u, i128hi104.countl_zero()); 2572 EXPECT_EQ(0u, i128hi104.countl_one()); 2573 EXPECT_EQ(104u, i128hi104.popcount()); 2574 2575 APInt i128hi0 = APInt::getAllOnes(128); 2576 i128hi0.clearHighBits(128); 2577 EXPECT_EQ(0u, i128hi0.countr_one()); 2578 EXPECT_EQ(128u, i128hi0.countr_zero()); 2579 EXPECT_EQ(0u, i128hi0.getActiveBits()); 2580 EXPECT_EQ(128u, i128hi0.countl_zero()); 2581 EXPECT_EQ(0u, i128hi0.countl_one()); 2582 EXPECT_EQ(0u, i128hi0.popcount()); 2583 2584 APInt i80hi1 = APInt::getAllOnes(80); 2585 i80hi1.clearHighBits(79); 2586 EXPECT_EQ(1u, i80hi1.countr_one()); 2587 EXPECT_EQ(0u, i80hi1.countr_zero()); 2588 EXPECT_EQ(1u, i80hi1.getActiveBits()); 2589 EXPECT_EQ(79u, i80hi1.countl_zero()); 2590 EXPECT_EQ(0u, i80hi1.countl_one()); 2591 EXPECT_EQ(1u, i80hi1.popcount()); 2592 2593 APInt i32hi16 = APInt::getAllOnes(32); 2594 i32hi16.clearHighBits(16); 2595 EXPECT_EQ(16u, i32hi16.countr_one()); 2596 EXPECT_EQ(0u, i32hi16.countr_zero()); 2597 EXPECT_EQ(16u, i32hi16.getActiveBits()); 2598 EXPECT_EQ(16u, i32hi16.countl_zero()); 2599 EXPECT_EQ(0u, i32hi16.countl_one()); 2600 EXPECT_EQ(16u, i32hi16.popcount()); 2601 } 2602 2603 TEST(APIntTest, abds) { 2604 using APIntOps::abds; 2605 2606 APInt MaxU1(1, 1, false); 2607 APInt MinU1(1, 0, false); 2608 EXPECT_EQ(1u, abds(MaxU1, MinU1).getZExtValue()); 2609 EXPECT_EQ(1u, abds(MinU1, MaxU1).getZExtValue()); 2610 2611 APInt MaxU4(4, 15, false); 2612 APInt MinU4(4, 0, false); 2613 EXPECT_EQ(1, abds(MaxU4, MinU4).getSExtValue()); 2614 EXPECT_EQ(1, abds(MinU4, MaxU4).getSExtValue()); 2615 2616 APInt MaxS8(8, 127, true); 2617 APInt MinS8(8, -128, true); 2618 EXPECT_EQ(-1, abds(MaxS8, MinS8).getSExtValue()); 2619 EXPECT_EQ(-1, abds(MinS8, MaxS8).getSExtValue()); 2620 2621 APInt MaxU16(16, 65535, false); 2622 APInt MinU16(16, 0, false); 2623 EXPECT_EQ(1, abds(MaxU16, MinU16).getSExtValue()); 2624 EXPECT_EQ(1, abds(MinU16, MaxU16).getSExtValue()); 2625 2626 APInt MaxS16(16, 32767, true); 2627 APInt MinS16(16, -32768, true); 2628 APInt ZeroS16(16, 0, true); 2629 EXPECT_EQ(-1, abds(MaxS16, MinS16).getSExtValue()); 2630 EXPECT_EQ(-1, abds(MinS16, MaxS16).getSExtValue()); 2631 EXPECT_EQ(32768u, abds(ZeroS16, MinS16)); 2632 EXPECT_EQ(32768u, abds(MinS16, ZeroS16)); 2633 EXPECT_EQ(32767u, abds(ZeroS16, MaxS16)); 2634 EXPECT_EQ(32767u, abds(MaxS16, ZeroS16)); 2635 } 2636 2637 TEST(APIntTest, abdu) { 2638 using APIntOps::abdu; 2639 2640 APInt MaxU1(1, 1, false); 2641 APInt MinU1(1, 0, false); 2642 EXPECT_EQ(1u, abdu(MaxU1, MinU1).getZExtValue()); 2643 EXPECT_EQ(1u, abdu(MinU1, MaxU1).getZExtValue()); 2644 2645 APInt MaxU4(4, 15, false); 2646 APInt MinU4(4, 0, false); 2647 EXPECT_EQ(15u, abdu(MaxU4, MinU4).getZExtValue()); 2648 EXPECT_EQ(15u, abdu(MinU4, MaxU4).getZExtValue()); 2649 2650 APInt MaxS8(8, 127, true); 2651 APInt MinS8(8, -128, true); 2652 EXPECT_EQ(1u, abdu(MaxS8, MinS8).getZExtValue()); 2653 EXPECT_EQ(1u, abdu(MinS8, MaxS8).getZExtValue()); 2654 2655 APInt MaxU16(16, 65535, false); 2656 APInt MinU16(16, 0, false); 2657 EXPECT_EQ(65535u, abdu(MaxU16, MinU16).getZExtValue()); 2658 EXPECT_EQ(65535u, abdu(MinU16, MaxU16).getZExtValue()); 2659 2660 APInt MaxS16(16, 32767, true); 2661 APInt MinS16(16, -32768, true); 2662 APInt ZeroS16(16, 0, true); 2663 EXPECT_EQ(1u, abdu(MaxS16, MinS16).getZExtValue()); 2664 EXPECT_EQ(1u, abdu(MinS16, MaxS16).getZExtValue()); 2665 EXPECT_EQ(32768u, abdu(ZeroS16, MinS16)); 2666 EXPECT_EQ(32768u, abdu(MinS16, ZeroS16)); 2667 EXPECT_EQ(32767u, abdu(ZeroS16, MaxS16)); 2668 EXPECT_EQ(32767u, abdu(MaxS16, ZeroS16)); 2669 } 2670 2671 TEST(APIntTest, GCD) { 2672 using APIntOps::GreatestCommonDivisor; 2673 2674 for (unsigned Bits : {1, 2, 32, 63, 64, 65}) { 2675 // Test some corner cases near zero. 2676 APInt Zero(Bits, 0), One(Bits, 1); 2677 EXPECT_EQ(GreatestCommonDivisor(Zero, Zero), Zero); 2678 EXPECT_EQ(GreatestCommonDivisor(Zero, One), One); 2679 EXPECT_EQ(GreatestCommonDivisor(One, Zero), One); 2680 EXPECT_EQ(GreatestCommonDivisor(One, One), One); 2681 2682 if (Bits > 1) { 2683 APInt Two(Bits, 2); 2684 EXPECT_EQ(GreatestCommonDivisor(Zero, Two), Two); 2685 EXPECT_EQ(GreatestCommonDivisor(One, Two), One); 2686 EXPECT_EQ(GreatestCommonDivisor(Two, Two), Two); 2687 2688 // Test some corner cases near the highest representable value. 2689 APInt Max(Bits, 0); 2690 Max.setAllBits(); 2691 EXPECT_EQ(GreatestCommonDivisor(Zero, Max), Max); 2692 EXPECT_EQ(GreatestCommonDivisor(One, Max), One); 2693 EXPECT_EQ(GreatestCommonDivisor(Two, Max), One); 2694 EXPECT_EQ(GreatestCommonDivisor(Max, Max), Max); 2695 2696 APInt MaxOver2 = Max.udiv(Two); 2697 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max), One); 2698 // Max - 1 == Max / 2 * 2, because Max is odd. 2699 EXPECT_EQ(GreatestCommonDivisor(MaxOver2, Max - 1), MaxOver2); 2700 } 2701 } 2702 2703 // Compute the 20th Mersenne prime. 2704 const unsigned BitWidth = 4450; 2705 APInt HugePrime = APInt::getLowBitsSet(BitWidth, 4423); 2706 2707 // 9931 and 123456 are coprime. 2708 APInt A = HugePrime * APInt(BitWidth, 9931); 2709 APInt B = HugePrime * APInt(BitWidth, 123456); 2710 APInt C = GreatestCommonDivisor(A, B); 2711 EXPECT_EQ(C, HugePrime); 2712 } 2713 2714 TEST(APIntTest, LogicalRightShift) { 2715 APInt i256(APInt::getHighBitsSet(256, 2)); 2716 2717 i256.lshrInPlace(1); 2718 EXPECT_EQ(1U, i256.countl_zero()); 2719 EXPECT_EQ(253U, i256.countr_zero()); 2720 EXPECT_EQ(2U, i256.popcount()); 2721 2722 i256.lshrInPlace(62); 2723 EXPECT_EQ(63U, i256.countl_zero()); 2724 EXPECT_EQ(191U, i256.countr_zero()); 2725 EXPECT_EQ(2U, i256.popcount()); 2726 2727 i256.lshrInPlace(65); 2728 EXPECT_EQ(128U, i256.countl_zero()); 2729 EXPECT_EQ(126U, i256.countr_zero()); 2730 EXPECT_EQ(2U, i256.popcount()); 2731 2732 i256.lshrInPlace(64); 2733 EXPECT_EQ(192U, i256.countl_zero()); 2734 EXPECT_EQ(62U, i256.countr_zero()); 2735 EXPECT_EQ(2U, i256.popcount()); 2736 2737 i256.lshrInPlace(63); 2738 EXPECT_EQ(255U, i256.countl_zero()); 2739 EXPECT_EQ(0U, i256.countr_zero()); 2740 EXPECT_EQ(1U, i256.popcount()); 2741 2742 // Ensure we handle large shifts of multi-word. 2743 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2744 EXPECT_EQ(0, neg_one.lshr(128)); 2745 } 2746 2747 TEST(APIntTest, ArithmeticRightShift) { 2748 APInt i72(APInt::getHighBitsSet(72, 1)); 2749 i72.ashrInPlace(46); 2750 EXPECT_EQ(47U, i72.countl_one()); 2751 EXPECT_EQ(25U, i72.countr_zero()); 2752 EXPECT_EQ(47U, i72.popcount()); 2753 2754 i72 = APInt::getHighBitsSet(72, 1); 2755 i72.ashrInPlace(64); 2756 EXPECT_EQ(65U, i72.countl_one()); 2757 EXPECT_EQ(7U, i72.countr_zero()); 2758 EXPECT_EQ(65U, i72.popcount()); 2759 2760 APInt i128(APInt::getHighBitsSet(128, 1)); 2761 i128.ashrInPlace(64); 2762 EXPECT_EQ(65U, i128.countl_one()); 2763 EXPECT_EQ(63U, i128.countr_zero()); 2764 EXPECT_EQ(65U, i128.popcount()); 2765 2766 // Ensure we handle large shifts of multi-word. 2767 const APInt signmin32(APInt::getSignedMinValue(32)); 2768 EXPECT_TRUE(signmin32.ashr(32).isAllOnes()); 2769 2770 // Ensure we handle large shifts of multi-word. 2771 const APInt umax32(APInt::getSignedMaxValue(32)); 2772 EXPECT_EQ(0, umax32.ashr(32)); 2773 2774 // Ensure we handle large shifts of multi-word. 2775 const APInt signmin128(APInt::getSignedMinValue(128)); 2776 EXPECT_TRUE(signmin128.ashr(128).isAllOnes()); 2777 2778 // Ensure we handle large shifts of multi-word. 2779 const APInt umax128(APInt::getSignedMaxValue(128)); 2780 EXPECT_EQ(0, umax128.ashr(128)); 2781 } 2782 2783 TEST(APIntTest, LeftShift) { 2784 APInt i256(APInt::getLowBitsSet(256, 2)); 2785 2786 i256 <<= 1; 2787 EXPECT_EQ(253U, i256.countl_zero()); 2788 EXPECT_EQ(1U, i256.countr_zero()); 2789 EXPECT_EQ(2U, i256.popcount()); 2790 2791 i256 <<= 62; 2792 EXPECT_EQ(191U, i256.countl_zero()); 2793 EXPECT_EQ(63U, i256.countr_zero()); 2794 EXPECT_EQ(2U, i256.popcount()); 2795 2796 i256 <<= 65; 2797 EXPECT_EQ(126U, i256.countl_zero()); 2798 EXPECT_EQ(128U, i256.countr_zero()); 2799 EXPECT_EQ(2U, i256.popcount()); 2800 2801 i256 <<= 64; 2802 EXPECT_EQ(62U, i256.countl_zero()); 2803 EXPECT_EQ(192U, i256.countr_zero()); 2804 EXPECT_EQ(2U, i256.popcount()); 2805 2806 i256 <<= 63; 2807 EXPECT_EQ(0U, i256.countl_zero()); 2808 EXPECT_EQ(255U, i256.countr_zero()); 2809 EXPECT_EQ(1U, i256.popcount()); 2810 2811 // Ensure we handle large shifts of multi-word. 2812 const APInt neg_one(128, static_cast<uint64_t>(-1), true); 2813 EXPECT_EQ(0, neg_one.shl(128)); 2814 } 2815 2816 TEST(APIntTest, isSubsetOf) { 2817 APInt i32_1(32, 1); 2818 APInt i32_2(32, 2); 2819 APInt i32_3(32, 3); 2820 EXPECT_FALSE(i32_3.isSubsetOf(i32_1)); 2821 EXPECT_TRUE(i32_1.isSubsetOf(i32_3)); 2822 EXPECT_FALSE(i32_2.isSubsetOf(i32_1)); 2823 EXPECT_FALSE(i32_1.isSubsetOf(i32_2)); 2824 EXPECT_TRUE(i32_3.isSubsetOf(i32_3)); 2825 2826 APInt i128_1(128, 1); 2827 APInt i128_2(128, 2); 2828 APInt i128_3(128, 3); 2829 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2830 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2831 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2832 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2833 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2834 2835 i128_1 <<= 64; 2836 i128_2 <<= 64; 2837 i128_3 <<= 64; 2838 EXPECT_FALSE(i128_3.isSubsetOf(i128_1)); 2839 EXPECT_TRUE(i128_1.isSubsetOf(i128_3)); 2840 EXPECT_FALSE(i128_2.isSubsetOf(i128_1)); 2841 EXPECT_FALSE(i128_1.isSubsetOf(i128_2)); 2842 EXPECT_TRUE(i128_3.isSubsetOf(i128_3)); 2843 } 2844 2845 TEST(APIntTest, sext) { 2846 EXPECT_EQ(0, APInt(1, 0).sext(64)); 2847 EXPECT_EQ(~uint64_t(0), APInt(1, 1).sext(64)); 2848 2849 APInt i32_max(APInt::getSignedMaxValue(32).sext(63)); 2850 EXPECT_EQ(i32_max, i32_max.sext(63)); 2851 EXPECT_EQ(32U, i32_max.countl_zero()); 2852 EXPECT_EQ(0U, i32_max.countr_zero()); 2853 EXPECT_EQ(31U, i32_max.popcount()); 2854 2855 APInt i32_min(APInt::getSignedMinValue(32).sext(63)); 2856 EXPECT_EQ(i32_min, i32_min.sext(63)); 2857 EXPECT_EQ(32U, i32_min.countl_one()); 2858 EXPECT_EQ(31U, i32_min.countr_zero()); 2859 EXPECT_EQ(32U, i32_min.popcount()); 2860 2861 APInt i32_neg1(APInt(32, ~uint64_t(0)).sext(63)); 2862 EXPECT_EQ(i32_neg1, i32_neg1.sext(63)); 2863 EXPECT_EQ(63U, i32_neg1.countl_one()); 2864 EXPECT_EQ(0U, i32_neg1.countr_zero()); 2865 EXPECT_EQ(63U, i32_neg1.popcount()); 2866 2867 EXPECT_EQ(APInt(32u, 0), APInt(0u, 0).sext(32)); 2868 EXPECT_EQ(APInt(64u, 0), APInt(0u, 0).sext(64)); 2869 } 2870 2871 TEST(APIntTest, trunc) { 2872 APInt val(32, 0xFFFFFFFF); 2873 EXPECT_EQ(0xFFFF, val.trunc(16)); 2874 EXPECT_EQ(0xFFFFFFFF, val.trunc(32)); 2875 } 2876 2877 TEST(APIntTest, concat) { 2878 APInt Int1(4, 0x1ULL); 2879 APInt Int3(4, 0x3ULL); 2880 2881 EXPECT_EQ(0x31, Int3.concat(Int1)); 2882 EXPECT_EQ(APInt(12, 0x313), Int3.concat(Int1).concat(Int3)); 2883 EXPECT_EQ(APInt(16, 0x3313), Int3.concat(Int3).concat(Int1).concat(Int3)); 2884 2885 APInt I64(64, 0x3ULL); 2886 EXPECT_EQ(I64, I64.concat(I64).lshr(64).trunc(64)); 2887 2888 APInt I65(65, 0x3ULL); 2889 APInt I0 = APInt::getZeroWidth(); 2890 EXPECT_EQ(I65, I65.concat(I0)); 2891 EXPECT_EQ(I65, I0.concat(I65)); 2892 } 2893 2894 TEST(APIntTest, multiply) { 2895 APInt i64(64, 1234); 2896 2897 EXPECT_EQ(7006652, i64 * 5678); 2898 EXPECT_EQ(7006652, 5678 * i64); 2899 2900 APInt i128 = APInt::getOneBitSet(128, 64); 2901 APInt i128_1234(128, 1234); 2902 i128_1234 <<= 64; 2903 EXPECT_EQ(i128_1234, i128 * 1234); 2904 EXPECT_EQ(i128_1234, 1234 * i128); 2905 2906 APInt i96 = APInt::getOneBitSet(96, 64); 2907 i96 *= ~0ULL; 2908 EXPECT_EQ(32U, i96.countl_one()); 2909 EXPECT_EQ(32U, i96.popcount()); 2910 EXPECT_EQ(64U, i96.countr_zero()); 2911 } 2912 2913 TEST(APIntOpsTest, Mulh) { 2914 2915 // Unsigned 2916 2917 // 32 bits 2918 APInt i32a(32, 0x0001'E235); 2919 APInt i32b(32, 0xF623'55AD); 2920 EXPECT_EQ(0x0001'CFA1, APIntOps::mulhu(i32a, i32b)); 2921 2922 // 64 bits 2923 APInt i64a(64, 0x1234'5678'90AB'CDEF); 2924 APInt i64b(64, 0xFEDC'BA09'8765'4321); 2925 EXPECT_EQ(0x121F'A000'A372'3A57, APIntOps::mulhu(i64a, i64b)); 2926 2927 // 128 bits 2928 APInt i128a(128, "1234567890ABCDEF1234567890ABCDEF", 16); 2929 APInt i128b(128, "FEDCBA0987654321FEDCBA0987654321", 16); 2930 APInt i128Res = APIntOps::mulhu(i128a, i128b); 2931 EXPECT_EQ(APInt(128, "121FA000A3723A57E68984312C3A8D7E", 16), i128Res); 2932 2933 // Signed 2934 2935 // 32 bits 2936 APInt i32c(32, 0x1234'5678); // +ve 2937 APInt i32d(32, 0x10AB'CDEF); // +ve 2938 APInt i32e(32, 0xFEDC'BA09); // -ve 2939 2940 EXPECT_EQ(0x012F'7D02, APIntOps::mulhs(i32c, i32d)); 2941 EXPECT_EQ(0xFFEB'4988, APIntOps::mulhs(i32c, i32e)); 2942 EXPECT_EQ(0x0001'4B68, APIntOps::mulhs(i32e, i32e)); 2943 2944 // 64 bits 2945 APInt i64c(64, 0x1234'5678'90AB'CDEF); // +ve 2946 APInt i64d(64, 0x1234'5678'90FE'DCBA); // +ve 2947 APInt i64e(64, 0xFEDC'BA09'8765'4321); // -ve 2948 2949 EXPECT_EQ(0x014B'66DC'328E'10C1, APIntOps::mulhs(i64c, i64d)); 2950 EXPECT_EQ(0xFFEB'4988'12C6'6C68, APIntOps::mulhs(i64c, i64e)); 2951 EXPECT_EQ(0x0001'4B68'2174'FA18, APIntOps::mulhs(i64e, i64e)); 2952 2953 // 128 bits 2954 APInt i128c(128, "1234567890ABCDEF1234567890ABCDEF", 16); // +ve 2955 APInt i128d(128, "1234567890FEDCBA1234567890FEDCBA", 16); // +ve 2956 APInt i128e(128, "FEDCBA0987654321FEDCBA0987654321", 16); // -ve 2957 2958 i128Res = APIntOps::mulhs(i128c, i128d); 2959 EXPECT_EQ(APInt(128, "14B66DC328E10C1FE303DF9EA0B2529", 16), i128Res); 2960 2961 i128Res = APIntOps::mulhs(i128c, i128e); 2962 EXPECT_EQ(APInt(128, "FFEB498812C66C68D4552DB89B8EBF8F", 16), i128Res); 2963 } 2964 2965 TEST(APIntTest, RoundingUDiv) { 2966 for (uint64_t Ai = 1; Ai <= 255; Ai++) { 2967 APInt A(8, Ai); 2968 APInt Zero(8, 0); 2969 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::UP)); 2970 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::DOWN)); 2971 EXPECT_EQ(0, APIntOps::RoundingUDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 2972 2973 for (uint64_t Bi = 1; Bi <= 255; Bi++) { 2974 APInt B(8, Bi); 2975 { 2976 APInt Quo = APIntOps::RoundingUDiv(A, B, APInt::Rounding::UP); 2977 auto Prod = Quo.zext(16) * B.zext(16); 2978 EXPECT_TRUE(Prod.uge(Ai)); 2979 if (Prod.ugt(Ai)) { 2980 EXPECT_TRUE(((Quo - 1).zext(16) * B.zext(16)).ult(Ai)); 2981 } 2982 } 2983 { 2984 APInt Quo = A.udiv(B); 2985 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 2986 EXPECT_EQ(Quo, APIntOps::RoundingUDiv(A, B, APInt::Rounding::DOWN)); 2987 } 2988 } 2989 } 2990 } 2991 2992 TEST(APIntTest, RoundingSDiv) { 2993 for (int64_t Ai = -128; Ai <= 127; Ai++) { 2994 APInt A(8, Ai); 2995 2996 if (Ai != 0) { 2997 APInt Zero(8, 0); 2998 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::UP)); 2999 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::DOWN)); 3000 EXPECT_EQ(0, APIntOps::RoundingSDiv(Zero, A, APInt::Rounding::TOWARD_ZERO)); 3001 } 3002 3003 for (int64_t Bi = -128; Bi <= 127; Bi++) { 3004 if (Bi == 0) 3005 continue; 3006 3007 APInt B(8, Bi); 3008 APInt QuoTowardZero = A.sdiv(B); 3009 { 3010 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::UP); 3011 if (A.srem(B).isZero()) { 3012 EXPECT_EQ(QuoTowardZero, Quo); 3013 } else if (A.isNegative() != 3014 B.isNegative()) { // if the math quotient is negative. 3015 EXPECT_EQ(QuoTowardZero, Quo); 3016 } else { 3017 EXPECT_EQ(QuoTowardZero + 1, Quo); 3018 } 3019 } 3020 { 3021 APInt Quo = APIntOps::RoundingSDiv(A, B, APInt::Rounding::DOWN); 3022 if (A.srem(B).isZero()) { 3023 EXPECT_EQ(QuoTowardZero, Quo); 3024 } else if (A.isNegative() != 3025 B.isNegative()) { // if the math quotient is negative. 3026 EXPECT_EQ(QuoTowardZero - 1, Quo); 3027 } else { 3028 EXPECT_EQ(QuoTowardZero, Quo); 3029 } 3030 } 3031 EXPECT_EQ(QuoTowardZero, 3032 APIntOps::RoundingSDiv(A, B, APInt::Rounding::TOWARD_ZERO)); 3033 } 3034 } 3035 } 3036 3037 TEST(APIntTest, Average) { 3038 APInt A0(32, 0); 3039 APInt A2(32, 2); 3040 APInt A100(32, 100); 3041 APInt A101(32, 101); 3042 APInt A200(32, 200, false); 3043 APInt ApUMax = APInt::getMaxValue(32); 3044 3045 EXPECT_EQ(APInt(32, 150), APIntOps::avgFloorU(A100, A200)); 3046 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A200, A2, APInt::Rounding::DOWN), 3047 APIntOps::avgFloorU(A100, A200)); 3048 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A200, A2, APInt::Rounding::UP), 3049 APIntOps::avgCeilU(A100, A200)); 3050 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A101, A2, APInt::Rounding::DOWN), 3051 APIntOps::avgFloorU(A100, A101)); 3052 EXPECT_EQ(APIntOps::RoundingUDiv(A100 + A101, A2, APInt::Rounding::UP), 3053 APIntOps::avgCeilU(A100, A101)); 3054 EXPECT_EQ(A0, APIntOps::avgFloorU(A0, A0)); 3055 EXPECT_EQ(A0, APIntOps::avgCeilU(A0, A0)); 3056 EXPECT_EQ(ApUMax, APIntOps::avgFloorU(ApUMax, ApUMax)); 3057 EXPECT_EQ(ApUMax, APIntOps::avgCeilU(ApUMax, ApUMax)); 3058 EXPECT_EQ(APIntOps::RoundingUDiv(ApUMax, A2, APInt::Rounding::DOWN), 3059 APIntOps::avgFloorU(A0, ApUMax)); 3060 EXPECT_EQ(APIntOps::RoundingUDiv(ApUMax, A2, APInt::Rounding::UP), 3061 APIntOps::avgCeilU(A0, ApUMax)); 3062 3063 APInt Ap100(32, +100); 3064 APInt Ap101(32, +101); 3065 APInt Ap200(32, +200); 3066 APInt Am1(32, -1); 3067 APInt Am100(32, -100); 3068 APInt Am101(32, -101); 3069 APInt Am200(32, -200); 3070 APInt AmSMin = APInt::getSignedMinValue(32); 3071 APInt ApSMax = APInt::getSignedMaxValue(32); 3072 3073 EXPECT_EQ(APInt(32, +150), APIntOps::avgFloorS(Ap100, Ap200)); 3074 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap200, A2, APInt::Rounding::DOWN), 3075 APIntOps::avgFloorS(Ap100, Ap200)); 3076 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap200, A2, APInt::Rounding::UP), 3077 APIntOps::avgCeilS(Ap100, Ap200)); 3078 3079 EXPECT_EQ(APInt(32, -150), APIntOps::avgFloorS(Am100, Am200)); 3080 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am200, A2, APInt::Rounding::DOWN), 3081 APIntOps::avgFloorS(Am100, Am200)); 3082 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am200, A2, APInt::Rounding::UP), 3083 APIntOps::avgCeilS(Am100, Am200)); 3084 3085 EXPECT_EQ(APInt(32, +100), APIntOps::avgFloorS(Ap100, Ap101)); 3086 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap101, A2, APInt::Rounding::DOWN), 3087 APIntOps::avgFloorS(Ap100, Ap101)); 3088 EXPECT_EQ(APInt(32, +101), APIntOps::avgCeilS(Ap100, Ap101)); 3089 EXPECT_EQ(APIntOps::RoundingSDiv(Ap100 + Ap101, A2, APInt::Rounding::UP), 3090 APIntOps::avgCeilS(Ap100, Ap101)); 3091 3092 EXPECT_EQ(APInt(32, -101), APIntOps::avgFloorS(Am100, Am101)); 3093 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am101, A2, APInt::Rounding::DOWN), 3094 APIntOps::avgFloorS(Am100, Am101)); 3095 EXPECT_EQ(APInt(32, -100), APIntOps::avgCeilS(Am100, Am101)); 3096 EXPECT_EQ(APIntOps::RoundingSDiv(Am100 + Am101, A2, APInt::Rounding::UP), 3097 APIntOps::avgCeilS(Am100, Am101)); 3098 3099 EXPECT_EQ(AmSMin, APIntOps::avgFloorS(AmSMin, AmSMin)); 3100 EXPECT_EQ(AmSMin, APIntOps::avgCeilS(AmSMin, AmSMin)); 3101 3102 EXPECT_EQ(APIntOps::RoundingSDiv(AmSMin, A2, APInt::Rounding::DOWN), 3103 APIntOps::avgFloorS(A0, AmSMin)); 3104 EXPECT_EQ(APIntOps::RoundingSDiv(AmSMin, A2, APInt::Rounding::UP), 3105 APIntOps::avgCeilS(A0, AmSMin)); 3106 3107 EXPECT_EQ(A0, APIntOps::avgFloorS(A0, A0)); 3108 EXPECT_EQ(A0, APIntOps::avgCeilS(A0, A0)); 3109 3110 EXPECT_EQ(Am1, APIntOps::avgFloorS(AmSMin, ApSMax)); 3111 EXPECT_EQ(A0, APIntOps::avgCeilS(AmSMin, ApSMax)); 3112 3113 EXPECT_EQ(APIntOps::RoundingSDiv(ApSMax, A2, APInt::Rounding::DOWN), 3114 APIntOps::avgFloorS(A0, ApSMax)); 3115 EXPECT_EQ(APIntOps::RoundingSDiv(ApSMax, A2, APInt::Rounding::UP), 3116 APIntOps::avgCeilS(A0, ApSMax)); 3117 3118 EXPECT_EQ(ApSMax, APIntOps::avgFloorS(ApSMax, ApSMax)); 3119 EXPECT_EQ(ApSMax, APIntOps::avgCeilS(ApSMax, ApSMax)); 3120 } 3121 3122 TEST(APIntTest, umul_ov) { 3123 const std::pair<uint64_t, uint64_t> Overflows[] = { 3124 {0x8000000000000000, 2}, 3125 {0x5555555555555556, 3}, 3126 {4294967296, 4294967296}, 3127 {4294967295, 4294967298}, 3128 }; 3129 const std::pair<uint64_t, uint64_t> NonOverflows[] = { 3130 {0x7fffffffffffffff, 2}, 3131 {0x5555555555555555, 3}, 3132 {4294967295, 4294967297}, 3133 }; 3134 3135 bool Overflow; 3136 for (auto &X : Overflows) { 3137 APInt A(64, X.first); 3138 APInt B(64, X.second); 3139 (void)A.umul_ov(B, Overflow); 3140 EXPECT_TRUE(Overflow); 3141 } 3142 for (auto &X : NonOverflows) { 3143 APInt A(64, X.first); 3144 APInt B(64, X.second); 3145 (void)A.umul_ov(B, Overflow); 3146 EXPECT_FALSE(Overflow); 3147 } 3148 3149 for (unsigned Bits = 1; Bits <= 5; ++Bits) 3150 for (unsigned A = 0; A != 1u << Bits; ++A) 3151 for (unsigned B = 0; B != 1u << Bits; ++B) { 3152 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 3153 APInt Narrow = N1.umul_ov(N2, Overflow); 3154 APInt Wide = N1.zext(2 * Bits) * N2.zext(2 * Bits); 3155 EXPECT_EQ(Wide.trunc(Bits), Narrow); 3156 EXPECT_EQ(Narrow.zext(2 * Bits) != Wide, Overflow); 3157 } 3158 } 3159 3160 TEST(APIntTest, smul_ov) { 3161 for (unsigned Bits = 1; Bits <= 5; ++Bits) 3162 for (unsigned A = 0; A != 1u << Bits; ++A) 3163 for (unsigned B = 0; B != 1u << Bits; ++B) { 3164 bool Overflow; 3165 APInt N1 = APInt(Bits, A), N2 = APInt(Bits, B); 3166 APInt Narrow = N1.smul_ov(N2, Overflow); 3167 APInt Wide = N1.sext(2 * Bits) * N2.sext(2 * Bits); 3168 EXPECT_EQ(Wide.trunc(Bits), Narrow); 3169 EXPECT_EQ(Narrow.sext(2 * Bits) != Wide, Overflow); 3170 } 3171 } 3172 3173 TEST(APIntTest, sfloordiv_ov) { 3174 // int16 test overflow 3175 { 3176 using IntTy = int16_t; 3177 APInt divisor(8 * sizeof(IntTy), std::numeric_limits<IntTy>::lowest(), 3178 true); 3179 APInt dividend(8 * sizeof(IntTy), IntTy(-1), true); 3180 bool Overflow = false; 3181 (void)divisor.sfloordiv_ov(dividend, Overflow); 3182 EXPECT_TRUE(Overflow); 3183 } 3184 // int32 test overflow 3185 { 3186 using IntTy = int32_t; 3187 APInt divisor(8 * sizeof(IntTy), std::numeric_limits<IntTy>::lowest(), 3188 true); 3189 APInt dividend(8 * sizeof(IntTy), IntTy(-1), true); 3190 bool Overflow = false; 3191 (void)divisor.sfloordiv_ov(dividend, Overflow); 3192 EXPECT_TRUE(Overflow); 3193 } 3194 // int64 test overflow 3195 { 3196 using IntTy = int64_t; 3197 APInt divisor(8 * sizeof(IntTy), std::numeric_limits<IntTy>::lowest(), 3198 true); 3199 APInt dividend(8 * sizeof(IntTy), IntTy(-1), true); 3200 bool Overflow = false; 3201 (void)divisor.sfloordiv_ov(dividend, Overflow); 3202 EXPECT_TRUE(Overflow); 3203 } 3204 // test all of int8 3205 { 3206 bool Overflow = false; 3207 for (int i = -128; i < 128; ++i) { 3208 for (int j = -128; j < 128; ++j) { 3209 if (j == 0) 3210 continue; 3211 3212 int8_t a = static_cast<int8_t>(i); 3213 int8_t b = static_cast<int8_t>(j); 3214 3215 APInt divisor(8, a, true); 3216 APInt dividend(8, b, true); 3217 APInt quotient = divisor.sfloordiv_ov(dividend, Overflow); 3218 3219 if (i == -128 && j == -1) { 3220 EXPECT_TRUE(Overflow); 3221 continue; 3222 } 3223 3224 if (((i >= 0 && j > 0) || (i <= 0 && j < 0)) || 3225 (i % j == 0)) // if quotient >= 0 and remain == 0 floordiv 3226 // equivalent to div 3227 EXPECT_EQ(quotient.getSExtValue(), a / b); 3228 else 3229 EXPECT_EQ(quotient.getSExtValue(), a / b - 1); 3230 EXPECT_FALSE(Overflow); 3231 } 3232 } 3233 } 3234 } 3235 3236 TEST(APIntTest, SolveQuadraticEquationWrap) { 3237 // Verify that "Solution" is the first non-negative integer that solves 3238 // Ax^2 + Bx + C = "0 or overflow", i.e. that it is a correct solution 3239 // as calculated by SolveQuadraticEquationWrap. 3240 auto Validate = [] (int A, int B, int C, unsigned Width, int Solution) { 3241 int Mask = (1 << Width) - 1; 3242 3243 // Solution should be non-negative. 3244 EXPECT_GE(Solution, 0); 3245 3246 auto OverflowBits = [] (int64_t V, unsigned W) { 3247 return V & -(1 << W); 3248 }; 3249 3250 int64_t Over0 = OverflowBits(C, Width); 3251 3252 auto IsZeroOrOverflow = [&] (int X) { 3253 int64_t ValueAtX = A*X*X + B*X + C; 3254 int64_t OverX = OverflowBits(ValueAtX, Width); 3255 return (ValueAtX & Mask) == 0 || OverX != Over0; 3256 }; 3257 3258 auto EquationToString = [&] (const char *X_str) { 3259 return (Twine(A) + Twine(X_str) + Twine("^2 + ") + Twine(B) + 3260 Twine(X_str) + Twine(" + ") + Twine(C) + Twine(", bitwidth: ") + 3261 Twine(Width)).str(); 3262 }; 3263 3264 auto IsSolution = [&] (const char *X_str, int X) { 3265 if (IsZeroOrOverflow(X)) 3266 return ::testing::AssertionSuccess() 3267 << X << " is a solution of " << EquationToString(X_str); 3268 return ::testing::AssertionFailure() 3269 << X << " is not an expected solution of " 3270 << EquationToString(X_str); 3271 }; 3272 3273 auto IsNotSolution = [&] (const char *X_str, int X) { 3274 if (!IsZeroOrOverflow(X)) 3275 return ::testing::AssertionSuccess() 3276 << X << " is not a solution of " << EquationToString(X_str); 3277 return ::testing::AssertionFailure() 3278 << X << " is an unexpected solution of " 3279 << EquationToString(X_str); 3280 }; 3281 3282 // This is the important part: make sure that there is no solution that 3283 // is less than the calculated one. 3284 if (Solution > 0) { 3285 for (int X = 1; X < Solution-1; ++X) 3286 EXPECT_PRED_FORMAT1(IsNotSolution, X); 3287 } 3288 3289 // Verify that the calculated solution is indeed a solution. 3290 EXPECT_PRED_FORMAT1(IsSolution, Solution); 3291 }; 3292 3293 // Generate all possible quadratic equations with Width-bit wide integer 3294 // coefficients, get the solution from SolveQuadraticEquationWrap, and 3295 // verify that the solution is correct. 3296 auto Iterate = [&] (unsigned Width) { 3297 assert(1 < Width && Width < 32); 3298 int Low = -(1 << (Width-1)); 3299 int High = (1 << (Width-1)); 3300 3301 for (int A = Low; A != High; ++A) { 3302 if (A == 0) 3303 continue; 3304 for (int B = Low; B != High; ++B) { 3305 for (int C = Low; C != High; ++C) { 3306 std::optional<APInt> S = APIntOps::SolveQuadraticEquationWrap( 3307 APInt(Width, A), APInt(Width, B), APInt(Width, C), Width); 3308 if (S) 3309 Validate(A, B, C, Width, S->getSExtValue()); 3310 } 3311 } 3312 } 3313 }; 3314 3315 // Test all widths in [2..6]. 3316 for (unsigned i = 2; i <= 6; ++i) 3317 Iterate(i); 3318 } 3319 3320 TEST(APIntTest, MultiplicativeInverseExaustive) { 3321 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) { 3322 for (unsigned Value = 1; Value < (1u << BitWidth); Value += 2) { 3323 // Multiplicative inverse exists for all odd numbers. 3324 APInt V = APInt(BitWidth, Value); 3325 EXPECT_EQ(V * V.multiplicativeInverse(), 1); 3326 } 3327 } 3328 } 3329 3330 TEST(APIntTest, GetMostSignificantDifferentBit) { 3331 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 0)), 3332 std::nullopt); 3333 EXPECT_EQ( 3334 APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 42)), 3335 std::nullopt); 3336 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 1)), 3337 0u); 3338 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 2)), 3339 1u); 3340 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 0), APInt(8, 3)), 3341 1u); 3342 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 0)), 3343 0u); 3344 EXPECT_EQ(APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 1)), 3345 std::nullopt); 3346 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 2)), 3347 1u); 3348 EXPECT_EQ(*APIntOps::GetMostSignificantDifferentBit(APInt(8, 1), APInt(8, 3)), 3349 1u); 3350 EXPECT_EQ( 3351 *APIntOps::GetMostSignificantDifferentBit(APInt(8, 42), APInt(8, 112)), 3352 6u); 3353 } 3354 3355 TEST(APIntTest, GetMostSignificantDifferentBitExaustive) { 3356 auto GetHighestDifferentBitBruteforce = 3357 [](const APInt &V0, const APInt &V1) -> std::optional<unsigned> { 3358 assert(V0.getBitWidth() == V1.getBitWidth() && "Must have same bitwidth"); 3359 if (V0 == V1) 3360 return std::nullopt; // Bitwise identical. 3361 // There is a mismatch. Let's find the most significant different bit. 3362 for (int Bit = V0.getBitWidth() - 1; Bit >= 0; --Bit) { 3363 if (V0[Bit] == V1[Bit]) 3364 continue; 3365 return Bit; 3366 } 3367 llvm_unreachable("Must have found bit mismatch."); 3368 }; 3369 3370 for (unsigned BitWidth = 1; BitWidth <= 8; ++BitWidth) { 3371 for (unsigned V0 = 0; V0 < (1u << BitWidth); ++V0) { 3372 for (unsigned V1 = 0; V1 < (1u << BitWidth); ++V1) { 3373 APInt A = APInt(BitWidth, V0); 3374 APInt B = APInt(BitWidth, V1); 3375 3376 auto Bit = APIntOps::GetMostSignificantDifferentBit(A, B); 3377 EXPECT_EQ(Bit, GetHighestDifferentBitBruteforce(A, B)); 3378 3379 if (!Bit) 3380 EXPECT_EQ(A, B); 3381 else { 3382 EXPECT_NE(A, B); 3383 for (unsigned NumLowBits = 0; NumLowBits <= BitWidth; ++NumLowBits) { 3384 APInt Adash = A; 3385 Adash.clearLowBits(NumLowBits); 3386 APInt Bdash = B; 3387 Bdash.clearLowBits(NumLowBits); 3388 // Clearing only low bits up to and including *Bit is sufficient 3389 // to make values equal. 3390 if (NumLowBits >= 1 + *Bit) 3391 EXPECT_EQ(Adash, Bdash); 3392 else 3393 EXPECT_NE(Adash, Bdash); 3394 } 3395 } 3396 } 3397 } 3398 } 3399 } 3400 3401 TEST(APIntTest, SignbitZeroChecks) { 3402 EXPECT_TRUE(APInt(8, -1).isNegative()); 3403 EXPECT_FALSE(APInt(8, -1).isNonNegative()); 3404 EXPECT_FALSE(APInt(8, -1).isStrictlyPositive()); 3405 EXPECT_TRUE(APInt(8, -1).isNonPositive()); 3406 3407 EXPECT_FALSE(APInt(8, 0).isNegative()); 3408 EXPECT_TRUE(APInt(8, 0).isNonNegative()); 3409 EXPECT_FALSE(APInt(8, 0).isStrictlyPositive()); 3410 EXPECT_TRUE(APInt(8, 0).isNonPositive()); 3411 3412 EXPECT_FALSE(APInt(8, 1).isNegative()); 3413 EXPECT_TRUE(APInt(8, 1).isNonNegative()); 3414 EXPECT_TRUE(APInt(8, 1).isStrictlyPositive()); 3415 EXPECT_FALSE(APInt(8, 1).isNonPositive()); 3416 } 3417 3418 TEST(APIntTest, ZeroWidth) { 3419 // Zero width Constructors. 3420 auto ZW = APInt::getZeroWidth(); 3421 EXPECT_EQ(0U, ZW.getBitWidth()); 3422 EXPECT_EQ(0U, APInt(0, ArrayRef<uint64_t>({0, 1, 2})).getBitWidth()); 3423 EXPECT_EQ(0U, APInt(0, "0", 10).getBitWidth()); 3424 3425 // Default constructor is single bit wide. 3426 EXPECT_EQ(1U, APInt().getBitWidth()); 3427 3428 // Copy ctor (move is down below). 3429 APInt ZW2(ZW); 3430 EXPECT_EQ(0U, ZW2.getBitWidth()); 3431 // Assignment 3432 ZW = ZW2; 3433 EXPECT_EQ(0U, ZW.getBitWidth()); 3434 3435 // Methods like getLowBitsSet work with zero bits. 3436 EXPECT_EQ(0U, APInt::getLowBitsSet(0, 0).getBitWidth()); 3437 EXPECT_EQ(0U, APInt::getSplat(0, ZW).getBitWidth()); 3438 EXPECT_EQ(0U, APInt(4, 10).extractBits(0, 2).getBitWidth()); 3439 EXPECT_EQ(0U, APInt(4, 10).extractBitsAsZExtValue(0, 2)); 3440 3441 // Logical operators. 3442 ZW |= ZW2; 3443 ZW &= ZW2; 3444 ZW ^= ZW2; 3445 ZW |= 42; // These ignore high bits of the literal. 3446 ZW &= 42; 3447 ZW ^= 42; 3448 EXPECT_EQ(1, ZW.isIntN(0)); 3449 3450 // Modulo Arithmetic. Divide/Rem aren't defined on division by zero, so they 3451 // aren't supported. 3452 ZW += ZW2; 3453 ZW -= ZW2; 3454 ZW *= ZW2; 3455 3456 // Logical Shifts and rotates, the amount must be <= bitwidth. 3457 ZW <<= 0; 3458 ZW.lshrInPlace(0); 3459 (void)ZW.rotl(0); 3460 (void)ZW.rotr(0); 3461 3462 // Comparisons. 3463 EXPECT_EQ(1, ZW == ZW); 3464 EXPECT_EQ(0, ZW != ZW); 3465 EXPECT_EQ(0, ZW.ult(ZW)); 3466 3467 // Mutations. 3468 ZW.setBitsWithWrap(0, 0); 3469 ZW.setBits(0, 0); 3470 ZW.clearAllBits(); 3471 ZW.flipAllBits(); 3472 3473 // Leading, trailing, ctpop, etc 3474 EXPECT_EQ(0U, ZW.countl_zero()); 3475 EXPECT_EQ(0U, ZW.countl_one()); 3476 EXPECT_EQ(0U, ZW.popcount()); 3477 EXPECT_EQ(0U, ZW.reverseBits().getBitWidth()); 3478 EXPECT_EQ(0U, ZW.getHiBits(0).getBitWidth()); 3479 EXPECT_EQ(0U, ZW.getLoBits(0).getBitWidth()); 3480 EXPECT_EQ(0, ZW.zext(4)); 3481 EXPECT_EQ(0U, APInt(4, 3).trunc(0).getBitWidth()); 3482 EXPECT_TRUE(ZW.isAllOnes()); 3483 3484 // Zero extension. 3485 EXPECT_EQ(0U, ZW.getZExtValue()); 3486 3487 SmallString<42> STR; 3488 ZW.toStringUnsigned(STR); 3489 EXPECT_EQ("0", STR); 3490 3491 // Move ctor (keep at the end of the method since moves are destructive). 3492 APInt MZW1(std::move(ZW)); 3493 EXPECT_EQ(0U, MZW1.getBitWidth()); 3494 // Move Assignment 3495 MZW1 = std::move(ZW2); 3496 EXPECT_EQ(0U, MZW1.getBitWidth()); 3497 } 3498 3499 TEST(APIntTest, ScaleBitMask) { 3500 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8), APInt(8, 0x00)); 3501 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8), APInt(8, 0x0F)); 3502 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8), APInt(8, 0xF0)); 3503 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8), APInt(8, 0xFF)); 3504 3505 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4), APInt(4, 0x00)); 3506 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4), APInt(4, 0x0F)); 3507 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4), APInt(4, 0x0E)); 3508 3509 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 8), APInt(8, 0x00)); 3510 3511 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getZero(1024), 4096), 3512 APInt::getZero(4096)); 3513 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getAllOnes(4096), 256), 3514 APInt::getAllOnes(256)); 3515 EXPECT_EQ(APIntOps::ScaleBitMask(APInt::getOneBitSet(4096, 32), 256), 3516 APInt::getOneBitSet(256, 2)); 3517 3518 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x00), 8, true), APInt(8, 0x00)); 3519 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x01), 8, true), APInt(8, 0x0F)); 3520 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x02), 8, true), APInt(8, 0xF0)); 3521 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(2, 0x03), 8, true), APInt(8, 0xFF)); 3522 3523 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0x00), 4, true), APInt(4, 0x00)); 3524 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xFF), 4, true), APInt(4, 0x0F)); 3525 EXPECT_EQ(APIntOps::ScaleBitMask(APInt(8, 0xE4), 4, true), APInt(4, 0x08)); 3526 } 3527 3528 TEST(APIntTest, DenseMap) { 3529 DenseMap<APInt, int> Map; 3530 APInt ZeroWidthInt(0, 0, false); 3531 Map.insert({ZeroWidthInt, 0}); 3532 Map.find(ZeroWidthInt); 3533 } 3534 3535 TEST(APIntTest, TryExt) { 3536 APInt small(32, 42); 3537 APInt large(128, {0xffff, 0xffff}); 3538 ASSERT_TRUE(small.tryZExtValue().has_value()); 3539 ASSERT_TRUE(small.trySExtValue().has_value()); 3540 ASSERT_FALSE(large.tryZExtValue().has_value()); 3541 ASSERT_FALSE(large.trySExtValue().has_value()); 3542 ASSERT_EQ(small.trySExtValue().value_or(41), 42); 3543 ASSERT_EQ(large.trySExtValue().value_or(41), 41); 3544 3545 APInt negOne32(32, 0); 3546 negOne32.setAllBits(); 3547 ASSERT_EQ(negOne32.trySExtValue().value_or(42), -1); 3548 APInt negOne64(64, 0); 3549 negOne64.setAllBits(); 3550 ASSERT_EQ(negOne64.trySExtValue().value_or(42), -1); 3551 APInt negOne128(128, 0); 3552 negOne128.setAllBits(); 3553 ASSERT_EQ(negOne128.trySExtValue().value_or(42), -1); 3554 ASSERT_EQ(42, APInt(128, -1).trySExtValue().value_or(42)); 3555 } 3556 3557 } // end anonymous namespace 3558