1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/ADT/APInt.h" 11 #include "llvm/ADT/ArrayRef.h" 12 #include "llvm/ADT/SmallString.h" 13 #include "gtest/gtest.h" 14 #include <array> 15 16 using namespace llvm; 17 18 namespace { 19 20 TEST(APIntTest, ValueInit) { 21 APInt Zero = APInt(); 22 EXPECT_TRUE(!Zero); 23 EXPECT_TRUE(!Zero.zext(64)); 24 EXPECT_TRUE(!Zero.sext(64)); 25 } 26 27 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 28 TEST(APIntTest, ShiftLeftByZero) { 29 APInt One = APInt::getNullValue(65) + 1; 30 APInt Shl = One.shl(0); 31 EXPECT_TRUE(Shl[0]); 32 EXPECT_FALSE(Shl[1]); 33 } 34 35 TEST(APIntTest, i64_ArithmeticRightShiftNegative) { 36 const APInt neg_one(64, static_cast<uint64_t>(-1), true); 37 EXPECT_EQ(neg_one, neg_one.ashr(7)); 38 } 39 40 TEST(APIntTest, i128_NegativeCount) { 41 APInt Minus3(128, static_cast<uint64_t>(-3), true); 42 EXPECT_EQ(126u, Minus3.countLeadingOnes()); 43 EXPECT_EQ(-3, Minus3.getSExtValue()); 44 45 APInt Minus1(128, static_cast<uint64_t>(-1), true); 46 EXPECT_EQ(0u, Minus1.countLeadingZeros()); 47 EXPECT_EQ(128u, Minus1.countLeadingOnes()); 48 EXPECT_EQ(128u, Minus1.getActiveBits()); 49 EXPECT_EQ(0u, Minus1.countTrailingZeros()); 50 EXPECT_EQ(128u, Minus1.countTrailingOnes()); 51 EXPECT_EQ(128u, Minus1.countPopulation()); 52 EXPECT_EQ(-1, Minus1.getSExtValue()); 53 } 54 55 TEST(APIntTest, i33_Count) { 56 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 57 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 58 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 59 EXPECT_EQ(33u, i33minus2.getActiveBits()); 60 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 61 EXPECT_EQ(32u, i33minus2.countPopulation()); 62 EXPECT_EQ(-2, i33minus2.getSExtValue()); 63 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 64 } 65 66 TEST(APIntTest, i61_Count) { 67 APInt i61(61, 1 << 15); 68 EXPECT_EQ(45u, i61.countLeadingZeros()); 69 EXPECT_EQ(0u, i61.countLeadingOnes()); 70 EXPECT_EQ(16u, i61.getActiveBits()); 71 EXPECT_EQ(15u, i61.countTrailingZeros()); 72 EXPECT_EQ(1u, i61.countPopulation()); 73 EXPECT_EQ((1 << 15), i61.getSExtValue()); 74 EXPECT_EQ((1 << 15), i61.getZExtValue()); 75 76 i61.setBits(8, 19); 77 EXPECT_EQ(42u, i61.countLeadingZeros()); 78 EXPECT_EQ(0u, i61.countLeadingOnes()); 79 EXPECT_EQ(19u, i61.getActiveBits()); 80 EXPECT_EQ(8u, i61.countTrailingZeros()); 81 EXPECT_EQ(11u, i61.countPopulation()); 82 EXPECT_EQ((1 << 19) - (1 << 8), i61.getSExtValue()); 83 EXPECT_EQ((1 << 19) - (1 << 8), i61.getZExtValue()); 84 } 85 86 TEST(APIntTest, i65_Count) { 87 APInt i65(65, 0, true); 88 EXPECT_EQ(65u, i65.countLeadingZeros()); 89 EXPECT_EQ(0u, i65.countLeadingOnes()); 90 EXPECT_EQ(0u, i65.getActiveBits()); 91 EXPECT_EQ(1u, i65.getActiveWords()); 92 EXPECT_EQ(65u, i65.countTrailingZeros()); 93 EXPECT_EQ(0u, i65.countPopulation()); 94 95 APInt i65minus(65, 0, true); 96 i65minus.setBit(64); 97 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 98 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 99 EXPECT_EQ(65u, i65minus.getActiveBits()); 100 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 101 EXPECT_EQ(1u, i65minus.countPopulation()); 102 } 103 104 TEST(APIntTest, i128_PositiveCount) { 105 APInt u128max = APInt::getAllOnesValue(128); 106 EXPECT_EQ(128u, u128max.countLeadingOnes()); 107 EXPECT_EQ(0u, u128max.countLeadingZeros()); 108 EXPECT_EQ(128u, u128max.getActiveBits()); 109 EXPECT_EQ(0u, u128max.countTrailingZeros()); 110 EXPECT_EQ(128u, u128max.countTrailingOnes()); 111 EXPECT_EQ(128u, u128max.countPopulation()); 112 113 APInt u64max(128, static_cast<uint64_t>(-1), false); 114 EXPECT_EQ(64u, u64max.countLeadingZeros()); 115 EXPECT_EQ(0u, u64max.countLeadingOnes()); 116 EXPECT_EQ(64u, u64max.getActiveBits()); 117 EXPECT_EQ(0u, u64max.countTrailingZeros()); 118 EXPECT_EQ(64u, u64max.countTrailingOnes()); 119 EXPECT_EQ(64u, u64max.countPopulation()); 120 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 121 122 APInt zero(128, 0, true); 123 EXPECT_EQ(128u, zero.countLeadingZeros()); 124 EXPECT_EQ(0u, zero.countLeadingOnes()); 125 EXPECT_EQ(0u, zero.getActiveBits()); 126 EXPECT_EQ(128u, zero.countTrailingZeros()); 127 EXPECT_EQ(0u, zero.countTrailingOnes()); 128 EXPECT_EQ(0u, zero.countPopulation()); 129 EXPECT_EQ(0u, zero.getSExtValue()); 130 EXPECT_EQ(0u, zero.getZExtValue()); 131 132 APInt one(128, 1, true); 133 EXPECT_EQ(127u, one.countLeadingZeros()); 134 EXPECT_EQ(0u, one.countLeadingOnes()); 135 EXPECT_EQ(1u, one.getActiveBits()); 136 EXPECT_EQ(0u, one.countTrailingZeros()); 137 EXPECT_EQ(1u, one.countTrailingOnes()); 138 EXPECT_EQ(1u, one.countPopulation()); 139 EXPECT_EQ(1, one.getSExtValue()); 140 EXPECT_EQ(1u, one.getZExtValue()); 141 142 APInt s128(128, 2, true); 143 EXPECT_EQ(126u, s128.countLeadingZeros()); 144 EXPECT_EQ(0u, s128.countLeadingOnes()); 145 EXPECT_EQ(2u, s128.getActiveBits()); 146 EXPECT_EQ(1u, s128.countTrailingZeros()); 147 EXPECT_EQ(0u, s128.countTrailingOnes()); 148 EXPECT_EQ(1u, s128.countPopulation()); 149 EXPECT_EQ(2, s128.getSExtValue()); 150 EXPECT_EQ(2u, s128.getZExtValue()); 151 152 // NOP Test 153 s128.setBits(42, 42); 154 EXPECT_EQ(126u, s128.countLeadingZeros()); 155 EXPECT_EQ(0u, s128.countLeadingOnes()); 156 EXPECT_EQ(2u, s128.getActiveBits()); 157 EXPECT_EQ(1u, s128.countTrailingZeros()); 158 EXPECT_EQ(0u, s128.countTrailingOnes()); 159 EXPECT_EQ(1u, s128.countPopulation()); 160 EXPECT_EQ(2, s128.getSExtValue()); 161 EXPECT_EQ(2u, s128.getZExtValue()); 162 163 s128.setBits(3, 32); 164 EXPECT_EQ(96u, s128.countLeadingZeros()); 165 EXPECT_EQ(0u, s128.countLeadingOnes()); 166 EXPECT_EQ(32u, s128.getActiveBits()); 167 EXPECT_EQ(33u, s128.getMinSignedBits()); 168 EXPECT_EQ(1u, s128.countTrailingZeros()); 169 EXPECT_EQ(0u, s128.countTrailingOnes()); 170 EXPECT_EQ(30u, s128.countPopulation()); 171 EXPECT_EQ(static_cast<uint32_t>((~0u << 3) | 2), s128.getZExtValue()); 172 173 s128.setBits(62, 128); 174 EXPECT_EQ(0u, s128.countLeadingZeros()); 175 EXPECT_EQ(66u, s128.countLeadingOnes()); 176 EXPECT_EQ(128u, s128.getActiveBits()); 177 EXPECT_EQ(63u, s128.getMinSignedBits()); 178 EXPECT_EQ(1u, s128.countTrailingZeros()); 179 EXPECT_EQ(0u, s128.countTrailingOnes()); 180 EXPECT_EQ(96u, s128.countPopulation()); 181 EXPECT_EQ(static_cast<int64_t>((3ull << 62) | 182 static_cast<uint32_t>((~0u << 3) | 2)), 183 s128.getSExtValue()); 184 } 185 186 TEST(APIntTest, i256) { 187 APInt s256(256, 15, true); 188 EXPECT_EQ(252u, s256.countLeadingZeros()); 189 EXPECT_EQ(0u, s256.countLeadingOnes()); 190 EXPECT_EQ(4u, s256.getActiveBits()); 191 EXPECT_EQ(0u, s256.countTrailingZeros()); 192 EXPECT_EQ(4u, s256.countTrailingOnes()); 193 EXPECT_EQ(4u, s256.countPopulation()); 194 EXPECT_EQ(15, s256.getSExtValue()); 195 EXPECT_EQ(15u, s256.getZExtValue()); 196 197 s256.setBits(62, 66); 198 EXPECT_EQ(190u, s256.countLeadingZeros()); 199 EXPECT_EQ(0u, s256.countLeadingOnes()); 200 EXPECT_EQ(66u, s256.getActiveBits()); 201 EXPECT_EQ(67u, s256.getMinSignedBits()); 202 EXPECT_EQ(0u, s256.countTrailingZeros()); 203 EXPECT_EQ(4u, s256.countTrailingOnes()); 204 EXPECT_EQ(8u, s256.countPopulation()); 205 206 s256.setBits(60, 256); 207 EXPECT_EQ(0u, s256.countLeadingZeros()); 208 EXPECT_EQ(196u, s256.countLeadingOnes()); 209 EXPECT_EQ(256u, s256.getActiveBits()); 210 EXPECT_EQ(61u, s256.getMinSignedBits()); 211 EXPECT_EQ(0u, s256.countTrailingZeros()); 212 EXPECT_EQ(4u, s256.countTrailingOnes()); 213 EXPECT_EQ(200u, s256.countPopulation()); 214 EXPECT_EQ(static_cast<int64_t>((~0ull << 60) | 15), s256.getSExtValue()); 215 } 216 217 TEST(APIntTest, i1) { 218 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 219 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 220 const APInt zero(1, 0); 221 const APInt one(1, 1); 222 const APInt two(1, 2); 223 224 EXPECT_EQ(0, neg_two.getSExtValue()); 225 EXPECT_EQ(-1, neg_one.getSExtValue()); 226 EXPECT_EQ(1u, neg_one.getZExtValue()); 227 EXPECT_EQ(0u, zero.getZExtValue()); 228 EXPECT_EQ(-1, one.getSExtValue()); 229 EXPECT_EQ(1u, one.getZExtValue()); 230 EXPECT_EQ(0u, two.getZExtValue()); 231 EXPECT_EQ(0, two.getSExtValue()); 232 233 // Basic equalities for 1-bit values. 234 EXPECT_EQ(zero, two); 235 EXPECT_EQ(zero, neg_two); 236 EXPECT_EQ(one, neg_one); 237 EXPECT_EQ(two, neg_two); 238 239 // Min/max signed values. 240 EXPECT_TRUE(zero.isMaxSignedValue()); 241 EXPECT_FALSE(one.isMaxSignedValue()); 242 EXPECT_FALSE(zero.isMinSignedValue()); 243 EXPECT_TRUE(one.isMinSignedValue()); 244 245 // Additions. 246 EXPECT_EQ(two, one + one); 247 EXPECT_EQ(zero, neg_one + one); 248 EXPECT_EQ(neg_two, neg_one + neg_one); 249 250 // Subtractions. 251 EXPECT_EQ(neg_two, neg_one - one); 252 EXPECT_EQ(two, one - neg_one); 253 EXPECT_EQ(zero, one - one); 254 255 // And 256 EXPECT_EQ(zero, zero & zero); 257 EXPECT_EQ(zero, one & zero); 258 EXPECT_EQ(zero, zero & one); 259 EXPECT_EQ(one, one & one); 260 EXPECT_EQ(zero, zero & zero); 261 EXPECT_EQ(zero, neg_one & zero); 262 EXPECT_EQ(zero, zero & neg_one); 263 EXPECT_EQ(neg_one, neg_one & neg_one); 264 265 // Or 266 EXPECT_EQ(zero, zero | zero); 267 EXPECT_EQ(one, one | zero); 268 EXPECT_EQ(one, zero | one); 269 EXPECT_EQ(one, one | one); 270 EXPECT_EQ(zero, zero | zero); 271 EXPECT_EQ(neg_one, neg_one | zero); 272 EXPECT_EQ(neg_one, zero | neg_one); 273 EXPECT_EQ(neg_one, neg_one | neg_one); 274 275 // Xor 276 EXPECT_EQ(zero, zero ^ zero); 277 EXPECT_EQ(one, one ^ zero); 278 EXPECT_EQ(one, zero ^ one); 279 EXPECT_EQ(zero, one ^ one); 280 EXPECT_EQ(zero, zero ^ zero); 281 EXPECT_EQ(neg_one, neg_one ^ zero); 282 EXPECT_EQ(neg_one, zero ^ neg_one); 283 EXPECT_EQ(zero, neg_one ^ neg_one); 284 285 // Shifts. 286 EXPECT_EQ(zero, one << one); 287 EXPECT_EQ(one, one << zero); 288 EXPECT_EQ(zero, one.shl(1)); 289 EXPECT_EQ(one, one.shl(0)); 290 EXPECT_EQ(zero, one.lshr(1)); 291 EXPECT_EQ(zero, one.ashr(1)); 292 293 // Rotates. 294 EXPECT_EQ(one, one.rotl(0)); 295 EXPECT_EQ(one, one.rotl(1)); 296 EXPECT_EQ(one, one.rotr(0)); 297 EXPECT_EQ(one, one.rotr(1)); 298 299 // Multiplies. 300 EXPECT_EQ(neg_one, neg_one * one); 301 EXPECT_EQ(neg_one, one * neg_one); 302 EXPECT_EQ(one, neg_one * neg_one); 303 EXPECT_EQ(one, one * one); 304 305 // Divides. 306 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 307 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 308 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 309 EXPECT_EQ(one, one.sdiv(one)); 310 311 EXPECT_EQ(neg_one, one.udiv(neg_one)); 312 EXPECT_EQ(neg_one, neg_one.udiv(one)); 313 EXPECT_EQ(one, neg_one.udiv(neg_one)); 314 EXPECT_EQ(one, one.udiv(one)); 315 316 // Remainders. 317 EXPECT_EQ(zero, neg_one.srem(one)); 318 EXPECT_EQ(zero, neg_one.urem(one)); 319 EXPECT_EQ(zero, one.srem(neg_one)); 320 321 // sdivrem 322 { 323 APInt q(8, 0); 324 APInt r(8, 0); 325 APInt one(8, 1); 326 APInt two(8, 2); 327 APInt nine(8, 9); 328 APInt four(8, 4); 329 330 EXPECT_EQ(nine.srem(two), one); 331 EXPECT_EQ(nine.srem(-two), one); 332 EXPECT_EQ((-nine).srem(two), -one); 333 EXPECT_EQ((-nine).srem(-two), -one); 334 335 APInt::sdivrem(nine, two, q, r); 336 EXPECT_EQ(four, q); 337 EXPECT_EQ(one, r); 338 APInt::sdivrem(-nine, two, q, r); 339 EXPECT_EQ(-four, q); 340 EXPECT_EQ(-one, r); 341 APInt::sdivrem(nine, -two, q, r); 342 EXPECT_EQ(-four, q); 343 EXPECT_EQ(one, r); 344 APInt::sdivrem(-nine, -two, q, r); 345 EXPECT_EQ(four, q); 346 EXPECT_EQ(-one, r); 347 } 348 } 349 350 TEST(APIntTest, compare) { 351 std::array<APInt, 5> testVals{{ 352 APInt{16, 2}, 353 APInt{16, 1}, 354 APInt{16, 0}, 355 APInt{16, (uint64_t)-1, true}, 356 APInt{16, (uint64_t)-2, true}, 357 }}; 358 359 for (auto &arg1 : testVals) 360 for (auto &arg2 : testVals) { 361 auto uv1 = arg1.getZExtValue(); 362 auto uv2 = arg2.getZExtValue(); 363 auto sv1 = arg1.getSExtValue(); 364 auto sv2 = arg2.getSExtValue(); 365 366 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 367 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 368 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 369 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 370 371 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 372 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 373 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 374 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 375 376 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 377 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 378 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 379 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 380 381 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 382 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 383 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 384 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 385 } 386 } 387 388 TEST(APIntTest, compareWithRawIntegers) { 389 EXPECT_TRUE(!APInt(8, 1).uge(256)); 390 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 391 EXPECT_TRUE( APInt(8, 1).ule(256)); 392 EXPECT_TRUE( APInt(8, 1).ult(256)); 393 EXPECT_TRUE(!APInt(8, 1).sge(256)); 394 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 395 EXPECT_TRUE( APInt(8, 1).sle(256)); 396 EXPECT_TRUE( APInt(8, 1).slt(256)); 397 EXPECT_TRUE(!(APInt(8, 0) == 256)); 398 EXPECT_TRUE( APInt(8, 0) != 256); 399 EXPECT_TRUE(!(APInt(8, 1) == 256)); 400 EXPECT_TRUE( APInt(8, 1) != 256); 401 402 auto uint64max = UINT64_MAX; 403 auto int64max = INT64_MAX; 404 auto int64min = INT64_MIN; 405 406 auto u64 = APInt{128, uint64max}; 407 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 408 auto big = u64 + 1; 409 410 EXPECT_TRUE( u64.uge(uint64max)); 411 EXPECT_TRUE(!u64.ugt(uint64max)); 412 EXPECT_TRUE( u64.ule(uint64max)); 413 EXPECT_TRUE(!u64.ult(uint64max)); 414 EXPECT_TRUE( u64.sge(int64max)); 415 EXPECT_TRUE( u64.sgt(int64max)); 416 EXPECT_TRUE(!u64.sle(int64max)); 417 EXPECT_TRUE(!u64.slt(int64max)); 418 EXPECT_TRUE( u64.sge(int64min)); 419 EXPECT_TRUE( u64.sgt(int64min)); 420 EXPECT_TRUE(!u64.sle(int64min)); 421 EXPECT_TRUE(!u64.slt(int64min)); 422 423 EXPECT_TRUE(u64 == uint64max); 424 EXPECT_TRUE(u64 != int64max); 425 EXPECT_TRUE(u64 != int64min); 426 427 EXPECT_TRUE(!s64.uge(uint64max)); 428 EXPECT_TRUE(!s64.ugt(uint64max)); 429 EXPECT_TRUE( s64.ule(uint64max)); 430 EXPECT_TRUE( s64.ult(uint64max)); 431 EXPECT_TRUE( s64.sge(int64max)); 432 EXPECT_TRUE(!s64.sgt(int64max)); 433 EXPECT_TRUE( s64.sle(int64max)); 434 EXPECT_TRUE(!s64.slt(int64max)); 435 EXPECT_TRUE( s64.sge(int64min)); 436 EXPECT_TRUE( s64.sgt(int64min)); 437 EXPECT_TRUE(!s64.sle(int64min)); 438 EXPECT_TRUE(!s64.slt(int64min)); 439 440 EXPECT_TRUE(s64 != uint64max); 441 EXPECT_TRUE(s64 == int64max); 442 EXPECT_TRUE(s64 != int64min); 443 444 EXPECT_TRUE( big.uge(uint64max)); 445 EXPECT_TRUE( big.ugt(uint64max)); 446 EXPECT_TRUE(!big.ule(uint64max)); 447 EXPECT_TRUE(!big.ult(uint64max)); 448 EXPECT_TRUE( big.sge(int64max)); 449 EXPECT_TRUE( big.sgt(int64max)); 450 EXPECT_TRUE(!big.sle(int64max)); 451 EXPECT_TRUE(!big.slt(int64max)); 452 EXPECT_TRUE( big.sge(int64min)); 453 EXPECT_TRUE( big.sgt(int64min)); 454 EXPECT_TRUE(!big.sle(int64min)); 455 EXPECT_TRUE(!big.slt(int64min)); 456 457 EXPECT_TRUE(big != uint64max); 458 EXPECT_TRUE(big != int64max); 459 EXPECT_TRUE(big != int64min); 460 } 461 462 TEST(APIntTest, compareWithInt64Min) { 463 int64_t edge = INT64_MIN; 464 int64_t edgeP1 = edge + 1; 465 int64_t edgeM1 = INT64_MAX; 466 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 467 468 EXPECT_TRUE(!a.slt(edge)); 469 EXPECT_TRUE( a.sle(edge)); 470 EXPECT_TRUE(!a.sgt(edge)); 471 EXPECT_TRUE( a.sge(edge)); 472 EXPECT_TRUE( a.slt(edgeP1)); 473 EXPECT_TRUE( a.sle(edgeP1)); 474 EXPECT_TRUE(!a.sgt(edgeP1)); 475 EXPECT_TRUE(!a.sge(edgeP1)); 476 EXPECT_TRUE( a.slt(edgeM1)); 477 EXPECT_TRUE( a.sle(edgeM1)); 478 EXPECT_TRUE(!a.sgt(edgeM1)); 479 EXPECT_TRUE(!a.sge(edgeM1)); 480 } 481 482 TEST(APIntTest, compareWithHalfInt64Max) { 483 uint64_t edge = 0x4000000000000000; 484 uint64_t edgeP1 = edge + 1; 485 uint64_t edgeM1 = edge - 1; 486 auto a = APInt{64, edge}; 487 488 EXPECT_TRUE(!a.ult(edge)); 489 EXPECT_TRUE( a.ule(edge)); 490 EXPECT_TRUE(!a.ugt(edge)); 491 EXPECT_TRUE( a.uge(edge)); 492 EXPECT_TRUE( a.ult(edgeP1)); 493 EXPECT_TRUE( a.ule(edgeP1)); 494 EXPECT_TRUE(!a.ugt(edgeP1)); 495 EXPECT_TRUE(!a.uge(edgeP1)); 496 EXPECT_TRUE(!a.ult(edgeM1)); 497 EXPECT_TRUE(!a.ule(edgeM1)); 498 EXPECT_TRUE( a.ugt(edgeM1)); 499 EXPECT_TRUE( a.uge(edgeM1)); 500 501 EXPECT_TRUE(!a.slt(edge)); 502 EXPECT_TRUE( a.sle(edge)); 503 EXPECT_TRUE(!a.sgt(edge)); 504 EXPECT_TRUE( a.sge(edge)); 505 EXPECT_TRUE( a.slt(edgeP1)); 506 EXPECT_TRUE( a.sle(edgeP1)); 507 EXPECT_TRUE(!a.sgt(edgeP1)); 508 EXPECT_TRUE(!a.sge(edgeP1)); 509 EXPECT_TRUE(!a.slt(edgeM1)); 510 EXPECT_TRUE(!a.sle(edgeM1)); 511 EXPECT_TRUE( a.sgt(edgeM1)); 512 EXPECT_TRUE( a.sge(edgeM1)); 513 } 514 515 TEST(APIntTest, compareLargeIntegers) { 516 // Make sure all the combinations of signed comparisons work with big ints. 517 auto One = APInt{128, static_cast<uint64_t>(1), true}; 518 auto Two = APInt{128, static_cast<uint64_t>(2), true}; 519 auto MinusOne = APInt{128, static_cast<uint64_t>(-1), true}; 520 auto MinusTwo = APInt{128, static_cast<uint64_t>(-2), true}; 521 522 EXPECT_TRUE(!One.slt(One)); 523 EXPECT_TRUE(!Two.slt(One)); 524 EXPECT_TRUE(MinusOne.slt(One)); 525 EXPECT_TRUE(MinusTwo.slt(One)); 526 527 EXPECT_TRUE(One.slt(Two)); 528 EXPECT_TRUE(!Two.slt(Two)); 529 EXPECT_TRUE(MinusOne.slt(Two)); 530 EXPECT_TRUE(MinusTwo.slt(Two)); 531 532 EXPECT_TRUE(!One.slt(MinusOne)); 533 EXPECT_TRUE(!Two.slt(MinusOne)); 534 EXPECT_TRUE(!MinusOne.slt(MinusOne)); 535 EXPECT_TRUE(MinusTwo.slt(MinusOne)); 536 537 EXPECT_TRUE(!One.slt(MinusTwo)); 538 EXPECT_TRUE(!Two.slt(MinusTwo)); 539 EXPECT_TRUE(!MinusOne.slt(MinusTwo)); 540 EXPECT_TRUE(!MinusTwo.slt(MinusTwo)); 541 } 542 543 TEST(APIntTest, binaryOpsWithRawIntegers) { 544 // Single word check. 545 uint64_t E1 = 0x2CA7F46BF6569915ULL; 546 APInt A1(64, E1); 547 548 EXPECT_EQ(A1 & E1, E1); 549 EXPECT_EQ(A1 & 0, 0); 550 EXPECT_EQ(A1 & 1, 1); 551 EXPECT_EQ(A1 & 5, 5); 552 EXPECT_EQ(A1 & UINT64_MAX, E1); 553 554 EXPECT_EQ(A1 | E1, E1); 555 EXPECT_EQ(A1 | 0, E1); 556 EXPECT_EQ(A1 | 1, E1); 557 EXPECT_EQ(A1 | 2, E1 | 2); 558 EXPECT_EQ(A1 | UINT64_MAX, UINT64_MAX); 559 560 EXPECT_EQ(A1 ^ E1, 0); 561 EXPECT_EQ(A1 ^ 0, E1); 562 EXPECT_EQ(A1 ^ 1, E1 ^ 1); 563 EXPECT_EQ(A1 ^ 7, E1 ^ 7); 564 EXPECT_EQ(A1 ^ UINT64_MAX, ~E1); 565 566 // Multiword check. 567 uint64_t N = 0xEB6EB136591CBA21ULL; 568 integerPart E2[4] = { 569 N, 570 0x7B9358BD6A33F10AULL, 571 0x7E7FFA5EADD8846ULL, 572 0x305F341CA00B613DULL 573 }; 574 APInt A2(integerPartWidth*4, E2); 575 576 EXPECT_EQ(A2 & N, N); 577 EXPECT_EQ(A2 & 0, 0); 578 EXPECT_EQ(A2 & 1, 1); 579 EXPECT_EQ(A2 & 5, 1); 580 EXPECT_EQ(A2 & UINT64_MAX, N); 581 582 EXPECT_EQ(A2 | N, A2); 583 EXPECT_EQ(A2 | 0, A2); 584 EXPECT_EQ(A2 | 1, A2); 585 EXPECT_EQ(A2 | 2, A2 + 2); 586 EXPECT_EQ(A2 | UINT64_MAX, A2 - N + UINT64_MAX); 587 588 EXPECT_EQ(A2 ^ N, A2 - N); 589 EXPECT_EQ(A2 ^ 0, A2); 590 EXPECT_EQ(A2 ^ 1, A2 - 1); 591 EXPECT_EQ(A2 ^ 7, A2 + 5); 592 EXPECT_EQ(A2 ^ UINT64_MAX, A2 - N + ~N); 593 } 594 595 TEST(APIntTest, rvalue_arithmetic) { 596 // Test all combinations of lvalue/rvalue lhs/rhs of add/sub 597 598 // Lamdba to return an APInt by value, but also provide the raw value of the 599 // allocated data. 600 auto getRValue = [](const char *HexString, uint64_t const *&RawData) { 601 APInt V(129, HexString, 16); 602 RawData = V.getRawData(); 603 return V; 604 }; 605 606 APInt One(129, "1", 16); 607 APInt Two(129, "2", 16); 608 APInt Three(129, "3", 16); 609 APInt MinusOne = -One; 610 611 const uint64_t *RawDataL = nullptr; 612 const uint64_t *RawDataR = nullptr; 613 614 { 615 // 1 + 1 = 2 616 APInt AddLL = One + One; 617 EXPECT_EQ(AddLL, Two); 618 619 APInt AddLR = One + getRValue("1", RawDataR); 620 EXPECT_EQ(AddLR, Two); 621 EXPECT_EQ(AddLR.getRawData(), RawDataR); 622 623 APInt AddRL = getRValue("1", RawDataL) + One; 624 EXPECT_EQ(AddRL, Two); 625 EXPECT_EQ(AddRL.getRawData(), RawDataL); 626 627 APInt AddRR = getRValue("1", RawDataL) + getRValue("1", RawDataR); 628 EXPECT_EQ(AddRR, Two); 629 EXPECT_EQ(AddRR.getRawData(), RawDataR); 630 631 // LValue's and constants 632 APInt AddLK = One + 1; 633 EXPECT_EQ(AddLK, Two); 634 635 APInt AddKL = 1 + One; 636 EXPECT_EQ(AddKL, Two); 637 638 // RValue's and constants 639 APInt AddRK = getRValue("1", RawDataL) + 1; 640 EXPECT_EQ(AddRK, Two); 641 EXPECT_EQ(AddRK.getRawData(), RawDataL); 642 643 APInt AddKR = 1 + getRValue("1", RawDataR); 644 EXPECT_EQ(AddKR, Two); 645 EXPECT_EQ(AddKR.getRawData(), RawDataR); 646 } 647 648 { 649 // 0x0,FFFF...FFFF + 0x2 = 0x100...0001 650 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 651 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 652 653 APInt AddLL = AllOnes + Two; 654 EXPECT_EQ(AddLL, HighOneLowOne); 655 656 APInt AddLR = AllOnes + getRValue("2", RawDataR); 657 EXPECT_EQ(AddLR, HighOneLowOne); 658 EXPECT_EQ(AddLR.getRawData(), RawDataR); 659 660 APInt AddRL = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + Two; 661 EXPECT_EQ(AddRL, HighOneLowOne); 662 EXPECT_EQ(AddRL.getRawData(), RawDataL); 663 664 APInt AddRR = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 665 getRValue("2", RawDataR); 666 EXPECT_EQ(AddRR, HighOneLowOne); 667 EXPECT_EQ(AddRR.getRawData(), RawDataR); 668 669 // LValue's and constants 670 APInt AddLK = AllOnes + 2; 671 EXPECT_EQ(AddLK, HighOneLowOne); 672 673 APInt AddKL = 2 + AllOnes; 674 EXPECT_EQ(AddKL, HighOneLowOne); 675 676 // RValue's and constants 677 APInt AddRK = getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataL) + 2; 678 EXPECT_EQ(AddRK, HighOneLowOne); 679 EXPECT_EQ(AddRK.getRawData(), RawDataL); 680 681 APInt AddKR = 2 + getRValue("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 682 EXPECT_EQ(AddKR, HighOneLowOne); 683 EXPECT_EQ(AddKR.getRawData(), RawDataR); 684 } 685 686 { 687 // 2 - 1 = 1 688 APInt SubLL = Two - One; 689 EXPECT_EQ(SubLL, One); 690 691 APInt SubLR = Two - getRValue("1", RawDataR); 692 EXPECT_EQ(SubLR, One); 693 EXPECT_EQ(SubLR.getRawData(), RawDataR); 694 695 APInt SubRL = getRValue("2", RawDataL) - One; 696 EXPECT_EQ(SubRL, One); 697 EXPECT_EQ(SubRL.getRawData(), RawDataL); 698 699 APInt SubRR = getRValue("2", RawDataL) - getRValue("1", RawDataR); 700 EXPECT_EQ(SubRR, One); 701 EXPECT_EQ(SubRR.getRawData(), RawDataR); 702 703 // LValue's and constants 704 APInt SubLK = Two - 1; 705 EXPECT_EQ(SubLK, One); 706 707 APInt SubKL = 2 - One; 708 EXPECT_EQ(SubKL, One); 709 710 // RValue's and constants 711 APInt SubRK = getRValue("2", RawDataL) - 1; 712 EXPECT_EQ(SubRK, One); 713 EXPECT_EQ(SubRK.getRawData(), RawDataL); 714 715 APInt SubKR = 2 - getRValue("1", RawDataR); 716 EXPECT_EQ(SubKR, One); 717 EXPECT_EQ(SubKR.getRawData(), RawDataR); 718 } 719 720 { 721 // 0x100...0001 - 0x0,FFFF...FFFF = 0x2 722 APInt AllOnes(129, "0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16); 723 APInt HighOneLowOne(129, "100000000000000000000000000000001", 16); 724 725 APInt SubLL = HighOneLowOne - AllOnes; 726 EXPECT_EQ(SubLL, Two); 727 728 APInt SubLR = HighOneLowOne - 729 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 730 EXPECT_EQ(SubLR, Two); 731 EXPECT_EQ(SubLR.getRawData(), RawDataR); 732 733 APInt SubRL = getRValue("100000000000000000000000000000001", RawDataL) - 734 AllOnes; 735 EXPECT_EQ(SubRL, Two); 736 EXPECT_EQ(SubRL.getRawData(), RawDataL); 737 738 APInt SubRR = getRValue("100000000000000000000000000000001", RawDataL) - 739 getRValue("0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 740 EXPECT_EQ(SubRR, Two); 741 EXPECT_EQ(SubRR.getRawData(), RawDataR); 742 743 // LValue's and constants 744 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 745 APInt SubLK = HighOneLowOne - 2; 746 EXPECT_EQ(SubLK, AllOnes); 747 748 // 2 - (-1) = 3 749 APInt SubKL = 2 - MinusOne; 750 EXPECT_EQ(SubKL, Three); 751 752 // RValue's and constants 753 // 0x100...0001 - 0x2 = 0x0,FFFF...FFFF 754 APInt SubRK = getRValue("100000000000000000000000000000001", RawDataL) - 2; 755 EXPECT_EQ(SubRK, AllOnes); 756 EXPECT_EQ(SubRK.getRawData(), RawDataL); 757 758 APInt SubKR = 2 - getRValue("1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", RawDataR); 759 EXPECT_EQ(SubKR, Three); 760 EXPECT_EQ(SubKR.getRawData(), RawDataR); 761 } 762 } 763 764 765 // Tests different div/rem varaints using scheme (a * b + c) / a 766 void testDiv(APInt a, APInt b, APInt c) { 767 ASSERT_TRUE(a.uge(b)); // Must: a >= b 768 ASSERT_TRUE(a.ugt(c)); // Must: a > c 769 770 auto p = a * b + c; 771 772 auto q = p.udiv(a); 773 auto r = p.urem(a); 774 EXPECT_EQ(b, q); 775 EXPECT_EQ(c, r); 776 APInt::udivrem(p, a, q, r); 777 EXPECT_EQ(b, q); 778 EXPECT_EQ(c, r); 779 q = p.sdiv(a); 780 r = p.srem(a); 781 EXPECT_EQ(b, q); 782 EXPECT_EQ(c, r); 783 APInt::sdivrem(p, a, q, r); 784 EXPECT_EQ(b, q); 785 EXPECT_EQ(c, r); 786 787 if (b.ugt(c)) { // Test also symmetric case 788 q = p.udiv(b); 789 r = p.urem(b); 790 EXPECT_EQ(a, q); 791 EXPECT_EQ(c, r); 792 APInt::udivrem(p, b, q, r); 793 EXPECT_EQ(a, q); 794 EXPECT_EQ(c, r); 795 q = p.sdiv(b); 796 r = p.srem(b); 797 EXPECT_EQ(a, q); 798 EXPECT_EQ(c, r); 799 APInt::sdivrem(p, b, q, r); 800 EXPECT_EQ(a, q); 801 EXPECT_EQ(c, r); 802 } 803 } 804 805 TEST(APIntTest, divrem_big1) { 806 // Tests KnuthDiv rare step D6 807 testDiv({256, "1ffffffffffffffff", 16}, 808 {256, "1ffffffffffffffff", 16}, 809 {256, 0}); 810 } 811 812 TEST(APIntTest, divrem_big2) { 813 // Tests KnuthDiv rare step D6 814 testDiv({1024, "112233ceff" 815 "cecece000000ffffffffffffffffffff" 816 "ffffffffffffffffffffffffffffffff" 817 "ffffffffffffffffffffffffffffffff" 818 "ffffffffffffffffffffffffffffff33", 16}, 819 {1024, "111111ffffffffffffffff" 820 "ffffffffffffffffffffffffffffffff" 821 "fffffffffffffffffffffffffffffccf" 822 "ffffffffffffffffffffffffffffff00", 16}, 823 {1024, 7919}); 824 } 825 826 TEST(APIntTest, divrem_big3) { 827 // Tests KnuthDiv case without shift 828 testDiv({256, "80000001ffffffffffffffff", 16}, 829 {256, "ffffffffffffff0000000", 16}, 830 {256, 4219}); 831 } 832 833 TEST(APIntTest, divrem_big4) { 834 // Tests heap allocation in divide() enfoced by huge numbers 835 testDiv(APInt{4096, 5}.shl(2001), 836 APInt{4096, 1}.shl(2000), 837 APInt{4096, 4219*13}); 838 } 839 840 TEST(APIntTest, divrem_big5) { 841 // Tests one word divisor case of divide() 842 testDiv(APInt{1024, 19}.shl(811), 843 APInt{1024, 4356013}, // one word 844 APInt{1024, 1}); 845 } 846 847 TEST(APIntTest, divrem_big6) { 848 // Tests some rare "borrow" cases in D4 step 849 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 850 APInt{512, "10000000000000001000000000000001", 16}, 851 APInt{512, "10000000000000000000000000000000", 16}); 852 } 853 854 TEST(APIntTest, divrem_big7) { 855 // Yet another test for KnuthDiv rare step D6. 856 testDiv({224, "800000008000000200000005", 16}, 857 {224, "fffffffd", 16}, 858 {224, "80000000800000010000000f", 16}); 859 } 860 861 TEST(APIntTest, fromString) { 862 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 863 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 864 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 865 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 866 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 867 868 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 869 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 870 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 871 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 872 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 873 874 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 875 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 876 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 877 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 878 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 879 880 881 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 882 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 883 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 884 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 885 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 886 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 887 888 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 889 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 890 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 891 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 892 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 893 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 894 895 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 896 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 897 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 898 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 899 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 900 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 901 902 903 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 904 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 905 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 906 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 907 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 908 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 909 910 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 911 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 912 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 913 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 914 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 915 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 916 917 918 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 919 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 920 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 921 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 922 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 923 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 924 925 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 926 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 927 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 928 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 929 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 930 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 931 932 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 933 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 934 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 935 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 936 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 937 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 938 939 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 940 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 941 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 942 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 943 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 944 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 945 } 946 947 TEST(APIntTest, FromArray) { 948 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 949 } 950 951 TEST(APIntTest, StringBitsNeeded2) { 952 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 953 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 954 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 955 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 956 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 957 958 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 959 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 960 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 961 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 962 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 963 964 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 965 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 966 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 967 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 968 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 969 } 970 971 TEST(APIntTest, StringBitsNeeded8) { 972 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 973 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 974 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 975 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 976 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 977 978 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 979 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 980 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 981 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 982 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 983 984 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 985 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 986 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 987 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 988 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 989 } 990 991 TEST(APIntTest, StringBitsNeeded10) { 992 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 993 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 994 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 995 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 996 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 997 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 998 999 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 1000 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 1001 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 1002 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 1003 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 1004 1005 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 1006 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 1007 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 1008 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 1009 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 1010 } 1011 1012 TEST(APIntTest, StringBitsNeeded16) { 1013 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 1014 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 1015 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 1016 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 1017 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 1018 1019 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 1020 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 1021 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 1022 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 1023 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 1024 1025 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 1026 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 1027 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 1028 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 1029 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 1030 } 1031 1032 TEST(APIntTest, toString) { 1033 SmallString<16> S; 1034 bool isSigned; 1035 1036 APInt(8, 0).toString(S, 2, true, true); 1037 EXPECT_EQ(S.str().str(), "0b0"); 1038 S.clear(); 1039 APInt(8, 0).toString(S, 8, true, true); 1040 EXPECT_EQ(S.str().str(), "00"); 1041 S.clear(); 1042 APInt(8, 0).toString(S, 10, true, true); 1043 EXPECT_EQ(S.str().str(), "0"); 1044 S.clear(); 1045 APInt(8, 0).toString(S, 16, true, true); 1046 EXPECT_EQ(S.str().str(), "0x0"); 1047 S.clear(); 1048 APInt(8, 0).toString(S, 36, true, false); 1049 EXPECT_EQ(S.str().str(), "0"); 1050 S.clear(); 1051 1052 isSigned = false; 1053 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1054 EXPECT_EQ(S.str().str(), "0b11111111"); 1055 S.clear(); 1056 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1057 EXPECT_EQ(S.str().str(), "0377"); 1058 S.clear(); 1059 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1060 EXPECT_EQ(S.str().str(), "255"); 1061 S.clear(); 1062 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1063 EXPECT_EQ(S.str().str(), "0xFF"); 1064 S.clear(); 1065 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1066 EXPECT_EQ(S.str().str(), "73"); 1067 S.clear(); 1068 1069 isSigned = true; 1070 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 1071 EXPECT_EQ(S.str().str(), "-0b1"); 1072 S.clear(); 1073 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 1074 EXPECT_EQ(S.str().str(), "-01"); 1075 S.clear(); 1076 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 1077 EXPECT_EQ(S.str().str(), "-1"); 1078 S.clear(); 1079 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 1080 EXPECT_EQ(S.str().str(), "-0x1"); 1081 S.clear(); 1082 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 1083 EXPECT_EQ(S.str().str(), "-1"); 1084 S.clear(); 1085 } 1086 1087 TEST(APIntTest, Log2) { 1088 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 1089 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 1090 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 1091 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 1092 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 1093 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 1094 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 1095 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 1096 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 1097 } 1098 1099 TEST(APIntTest, magic) { 1100 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 1101 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 1102 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 1103 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 1104 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 1105 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 1106 } 1107 1108 TEST(APIntTest, magicu) { 1109 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 1110 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 1111 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 1112 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 1113 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 1114 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 1115 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 1116 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 1117 } 1118 1119 #ifdef GTEST_HAS_DEATH_TEST 1120 #ifndef NDEBUG 1121 TEST(APIntTest, StringDeath) { 1122 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 1123 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 1124 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 1125 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 1126 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 1127 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 1128 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 1129 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 1130 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 1131 } 1132 #endif 1133 #endif 1134 1135 TEST(APIntTest, mul_clear) { 1136 APInt ValA(65, -1ULL); 1137 APInt ValB(65, 4); 1138 APInt ValC(65, 0); 1139 ValC = ValA * ValB; 1140 ValA *= ValB; 1141 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 1142 } 1143 1144 TEST(APIntTest, Rotate) { 1145 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 1146 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 1147 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 1148 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 1149 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 1150 1151 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 1152 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 1153 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 1154 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 1155 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 1156 1157 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1158 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1159 1160 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(33)); 1161 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(32, 33))); 1162 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(33, 33))); 1163 EXPECT_EQ(APInt(32, (1 << 8)), APInt(32, 1).rotl(APInt(32, 40))); 1164 EXPECT_EQ(APInt(32, (1 << 30)), APInt(32, 1).rotl(APInt(31, 30))); 1165 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotl(APInt(31, 31))); 1166 1167 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(1, 0))); 1168 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(1, 1))); 1169 1170 EXPECT_EQ(APInt(32, 16), APInt(32, 1).rotl(APInt(3, 4))); 1171 1172 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotl(APInt(64, 64))); 1173 EXPECT_EQ(APInt(32, 2), APInt(32, 1).rotl(APInt(64, 65))); 1174 1175 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 3))); 1176 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(7, 10))); 1177 EXPECT_EQ(APInt(7, 24), APInt(7, 3).rotl(APInt(5, 10))); 1178 EXPECT_EQ(APInt(7, 6), APInt(7, 3).rotl(APInt(12, 120))); 1179 1180 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 1181 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 1182 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 1183 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 1184 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 1185 1186 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 1187 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 1188 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 1189 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 1190 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 1191 1192 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1193 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1194 1195 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(33)); 1196 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(32, 33))); 1197 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(33, 33))); 1198 EXPECT_EQ(APInt(32, (1 << 24)), APInt(32, 1).rotr(APInt(32, 40))); 1199 1200 EXPECT_EQ(APInt(32, (1 << 2)), APInt(32, 1).rotr(APInt(31, 30))); 1201 EXPECT_EQ(APInt(32, (1 << 1)), APInt(32, 1).rotr(APInt(31, 31))); 1202 1203 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(1, 0))); 1204 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(1, 1))); 1205 1206 EXPECT_EQ(APInt(32, (1 << 28)), APInt(32, 1).rotr(APInt(3, 4))); 1207 1208 EXPECT_EQ(APInt(32, 1), APInt(32, 1).rotr(APInt(64, 64))); 1209 EXPECT_EQ(APInt(32, (1 << 31)), APInt(32, 1).rotr(APInt(64, 65))); 1210 1211 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 3))); 1212 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(7, 10))); 1213 EXPECT_EQ(APInt(7, 48), APInt(7, 3).rotr(APInt(5, 10))); 1214 EXPECT_EQ(APInt(7, 65), APInt(7, 3).rotr(APInt(12, 120))); 1215 1216 APInt Big(256, "00004000800000000000000000003fff8000000000000003", 16); 1217 APInt Rot(256, "3fff80000000000000030000000000000000000040008000", 16); 1218 EXPECT_EQ(Rot, Big.rotr(144)); 1219 1220 EXPECT_EQ(APInt(32, 8), APInt(32, 1).rotl(Big)); 1221 EXPECT_EQ(APInt(32, (1 << 29)), APInt(32, 1).rotr(Big)); 1222 } 1223 1224 TEST(APIntTest, Splat) { 1225 APInt ValA(8, 0x01); 1226 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 1227 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 1228 1229 APInt ValB(3, 5); 1230 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 1231 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 1232 } 1233 1234 TEST(APIntTest, tcDecrement) { 1235 // Test single word decrement. 1236 1237 // No out borrow. 1238 { 1239 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 1240 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1241 EXPECT_EQ(carry, integerPart(0)); 1242 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 1243 } 1244 1245 // With out borrow. 1246 { 1247 integerPart singleWord = 0; 1248 integerPart carry = APInt::tcDecrement(&singleWord, 1); 1249 EXPECT_EQ(carry, integerPart(1)); 1250 EXPECT_EQ(singleWord, ~integerPart(0)); 1251 } 1252 1253 // Test multiword decrement. 1254 1255 // No across word borrow, no out borrow. 1256 { 1257 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 1258 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 1259 APInt::tcDecrement(test, 4); 1260 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1261 } 1262 1263 // 1 across word borrow, no out borrow. 1264 { 1265 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 1266 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 1267 integerPart carry = APInt::tcDecrement(test, 4); 1268 EXPECT_EQ(carry, integerPart(0)); 1269 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1270 } 1271 1272 // 2 across word borrow, no out borrow. 1273 { 1274 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 1275 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 1276 integerPart carry = APInt::tcDecrement(test, 4); 1277 EXPECT_EQ(carry, integerPart(0)); 1278 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1279 } 1280 1281 // 3 across word borrow, no out borrow. 1282 { 1283 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 1284 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 1285 integerPart carry = APInt::tcDecrement(test, 4); 1286 EXPECT_EQ(carry, integerPart(0)); 1287 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1288 } 1289 1290 // 3 across word borrow, with out borrow. 1291 { 1292 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 1293 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 1294 integerPart carry = APInt::tcDecrement(test, 4); 1295 EXPECT_EQ(carry, integerPart(1)); 1296 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 1297 } 1298 } 1299 1300 TEST(APIntTest, arrayAccess) { 1301 // Single word check. 1302 uint64_t E1 = 0x2CA7F46BF6569915ULL; 1303 APInt A1(64, E1); 1304 for (unsigned i = 0, e = 64; i < e; ++i) { 1305 EXPECT_EQ(bool(E1 & (1ULL << i)), 1306 A1[i]); 1307 } 1308 1309 // Multiword check. 1310 integerPart E2[4] = { 1311 0xEB6EB136591CBA21ULL, 1312 0x7B9358BD6A33F10AULL, 1313 0x7E7FFA5EADD8846ULL, 1314 0x305F341CA00B613DULL 1315 }; 1316 APInt A2(integerPartWidth*4, E2); 1317 for (unsigned i = 0; i < 4; ++i) { 1318 for (unsigned j = 0; j < integerPartWidth; ++j) { 1319 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 1320 A2[i*integerPartWidth + j]); 1321 } 1322 } 1323 } 1324 1325 TEST(APIntTest, LargeAPIntConstruction) { 1326 // Check that we can properly construct very large APInt. It is very 1327 // unlikely that people will ever do this, but it is a legal input, 1328 // so we should not crash on it. 1329 APInt A9(UINT32_MAX, 0); 1330 EXPECT_FALSE(A9.getBoolValue()); 1331 } 1332 1333 TEST(APIntTest, nearestLogBase2) { 1334 // Single word check. 1335 1336 // Test round up. 1337 uint64_t I1 = 0x1800001; 1338 APInt A1(64, I1); 1339 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 1340 1341 // Test round down. 1342 uint64_t I2 = 0x1000011; 1343 APInt A2(64, I2); 1344 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 1345 1346 // Test ties round up. 1347 uint64_t I3 = 0x1800000; 1348 APInt A3(64, I3); 1349 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 1350 1351 // Multiple word check. 1352 1353 // Test round up. 1354 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 1355 APInt A4(integerPartWidth*4, I4); 1356 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 1357 1358 // Test round down. 1359 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 1360 APInt A5(integerPartWidth*4, I5); 1361 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 1362 1363 // Test ties round up. 1364 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 1365 APInt A6(integerPartWidth*4, I6); 1366 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 1367 1368 // Test BitWidth == 1 special cases. 1369 APInt A7(1, 1); 1370 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 1371 APInt A8(1, 0); 1372 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 1373 1374 // Test the zero case when we have a bit width large enough such 1375 // that the bit width is larger than UINT32_MAX-1. 1376 APInt A9(UINT32_MAX, 0); 1377 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 1378 } 1379 1380 TEST(APIntTest, IsSplat) { 1381 APInt A(32, 0x01010101); 1382 EXPECT_FALSE(A.isSplat(1)); 1383 EXPECT_FALSE(A.isSplat(2)); 1384 EXPECT_FALSE(A.isSplat(4)); 1385 EXPECT_TRUE(A.isSplat(8)); 1386 EXPECT_TRUE(A.isSplat(16)); 1387 EXPECT_TRUE(A.isSplat(32)); 1388 1389 APInt B(24, 0xAAAAAA); 1390 EXPECT_FALSE(B.isSplat(1)); 1391 EXPECT_TRUE(B.isSplat(2)); 1392 EXPECT_TRUE(B.isSplat(4)); 1393 EXPECT_TRUE(B.isSplat(8)); 1394 EXPECT_TRUE(B.isSplat(24)); 1395 1396 APInt C(24, 0xABAAAB); 1397 EXPECT_FALSE(C.isSplat(1)); 1398 EXPECT_FALSE(C.isSplat(2)); 1399 EXPECT_FALSE(C.isSplat(4)); 1400 EXPECT_FALSE(C.isSplat(8)); 1401 EXPECT_TRUE(C.isSplat(24)); 1402 1403 APInt D(32, 0xABBAABBA); 1404 EXPECT_FALSE(D.isSplat(1)); 1405 EXPECT_FALSE(D.isSplat(2)); 1406 EXPECT_FALSE(D.isSplat(4)); 1407 EXPECT_FALSE(D.isSplat(8)); 1408 EXPECT_TRUE(D.isSplat(16)); 1409 EXPECT_TRUE(D.isSplat(32)); 1410 1411 APInt E(32, 0); 1412 EXPECT_TRUE(E.isSplat(1)); 1413 EXPECT_TRUE(E.isSplat(2)); 1414 EXPECT_TRUE(E.isSplat(4)); 1415 EXPECT_TRUE(E.isSplat(8)); 1416 EXPECT_TRUE(E.isSplat(16)); 1417 EXPECT_TRUE(E.isSplat(32)); 1418 } 1419 1420 TEST(APIntTest, isMask) { 1421 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0x01010101))); 1422 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xf0000000))); 1423 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xffff0000))); 1424 EXPECT_FALSE(APIntOps::isMask(APInt(32, 0xff << 1))); 1425 1426 for (int N : { 1, 2, 3, 4, 7, 8, 16, 32, 64, 127, 128, 129, 256 }) { 1427 EXPECT_FALSE(APIntOps::isMask(APInt(N, 0))); 1428 1429 APInt One(N, 1); 1430 for (int I = 1; I <= N; ++I) { 1431 APInt MaskVal = One.shl(I) - 1; 1432 EXPECT_TRUE(APIntOps::isMask(MaskVal)); 1433 } 1434 } 1435 } 1436 1437 #if defined(__clang__) 1438 // Disable the pragma warning from versions of Clang without -Wself-move 1439 #pragma clang diagnostic push 1440 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1441 // Disable the warning that triggers on exactly what is being tested. 1442 #pragma clang diagnostic push 1443 #pragma clang diagnostic ignored "-Wself-move" 1444 #endif 1445 TEST(APIntTest, SelfMoveAssignment) { 1446 APInt X(32, 0xdeadbeef); 1447 X = std::move(X); 1448 EXPECT_EQ(32u, X.getBitWidth()); 1449 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1450 1451 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1452 APInt Y(128, Bits); 1453 Y = std::move(Y); 1454 EXPECT_EQ(128u, Y.getBitWidth()); 1455 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1456 const uint64_t *Raw = Y.getRawData(); 1457 EXPECT_EQ(2u, Y.getNumWords()); 1458 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1459 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1460 } 1461 #if defined(__clang__) 1462 #pragma clang diagnostic pop 1463 #pragma clang diagnostic pop 1464 #endif 1465 } 1466 1467 TEST(APIntTest, reverseBits) { 1468 EXPECT_EQ(1, APInt(1, 1).reverseBits()); 1469 EXPECT_EQ(0, APInt(1, 0).reverseBits()); 1470 1471 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1472 EXPECT_EQ(3, APInt(2, 3).reverseBits()); 1473 1474 EXPECT_EQ(0xb, APInt(4, 0xd).reverseBits()); 1475 EXPECT_EQ(0xd, APInt(4, 0xb).reverseBits()); 1476 EXPECT_EQ(0xf, APInt(4, 0xf).reverseBits()); 1477 1478 EXPECT_EQ(0x30, APInt(7, 0x6).reverseBits()); 1479 EXPECT_EQ(0x5a, APInt(7, 0x2d).reverseBits()); 1480 1481 EXPECT_EQ(0x0f, APInt(8, 0xf0).reverseBits()); 1482 EXPECT_EQ(0xf0, APInt(8, 0x0f).reverseBits()); 1483 1484 EXPECT_EQ(0x0f0f, APInt(16, 0xf0f0).reverseBits()); 1485 EXPECT_EQ(0xf0f0, APInt(16, 0x0f0f).reverseBits()); 1486 1487 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1488 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1489 1490 EXPECT_EQ(0x402880a0 >> 1, APInt(31, 0x05011402).reverseBits()); 1491 1492 EXPECT_EQ(0x0f0f0f0f, APInt(32, 0xf0f0f0f0).reverseBits()); 1493 EXPECT_EQ(0xf0f0f0f0, APInt(32, 0x0f0f0f0f).reverseBits()); 1494 1495 EXPECT_EQ(0x0f0f0f0f0f0f0f0f, APInt(64, 0xf0f0f0f0f0f0f0f0).reverseBits()); 1496 EXPECT_EQ(0xf0f0f0f0f0f0f0f0, APInt(64, 0x0f0f0f0f0f0f0f0f).reverseBits()); 1497 1498 for (unsigned N : { 1, 8, 16, 24, 31, 32, 33, 1499 63, 64, 65, 127, 128, 257, 1024 }) { 1500 for (unsigned I = 0; I < N; ++I) { 1501 APInt X = APInt::getOneBitSet(N, I); 1502 APInt Y = APInt::getOneBitSet(N, N - (I + 1)); 1503 EXPECT_EQ(Y, X.reverseBits()); 1504 EXPECT_EQ(X, Y.reverseBits()); 1505 } 1506 } 1507 } 1508