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/SmallString.h" 12 #include "gtest/gtest.h" 13 #include <array> 14 #include <ostream> 15 16 using namespace llvm; 17 18 namespace { 19 20 // Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 21 TEST(APIntTest, ShiftLeftByZero) { 22 APInt One = APInt::getNullValue(65) + 1; 23 APInt Shl = One.shl(0); 24 EXPECT_TRUE(Shl[0]); 25 EXPECT_FALSE(Shl[1]); 26 } 27 28 TEST(APIntTest, i128_NegativeCount) { 29 APInt Minus3(128, static_cast<uint64_t>(-3), true); 30 EXPECT_EQ(126u, Minus3.countLeadingOnes()); 31 EXPECT_EQ(-3, Minus3.getSExtValue()); 32 33 APInt Minus1(128, static_cast<uint64_t>(-1), true); 34 EXPECT_EQ(0u, Minus1.countLeadingZeros()); 35 EXPECT_EQ(128u, Minus1.countLeadingOnes()); 36 EXPECT_EQ(128u, Minus1.getActiveBits()); 37 EXPECT_EQ(0u, Minus1.countTrailingZeros()); 38 EXPECT_EQ(128u, Minus1.countTrailingOnes()); 39 EXPECT_EQ(128u, Minus1.countPopulation()); 40 EXPECT_EQ(-1, Minus1.getSExtValue()); 41 } 42 43 // XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it. 44 #if defined(__llvm__) || !defined(__FreeBSD__) 45 46 TEST(APIntTest, i33_Count) { 47 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 48 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 49 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 50 EXPECT_EQ(33u, i33minus2.getActiveBits()); 51 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 52 EXPECT_EQ(32u, i33minus2.countPopulation()); 53 EXPECT_EQ(-2, i33minus2.getSExtValue()); 54 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 55 } 56 57 #endif 58 59 TEST(APIntTest, i65_Count) { 60 APInt i65(65, 0, true); 61 EXPECT_EQ(65u, i65.countLeadingZeros()); 62 EXPECT_EQ(0u, i65.countLeadingOnes()); 63 EXPECT_EQ(0u, i65.getActiveBits()); 64 EXPECT_EQ(1u, i65.getActiveWords()); 65 EXPECT_EQ(65u, i65.countTrailingZeros()); 66 EXPECT_EQ(0u, i65.countPopulation()); 67 68 APInt i65minus(65, 0, true); 69 i65minus.setBit(64); 70 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 71 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 72 EXPECT_EQ(65u, i65minus.getActiveBits()); 73 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 74 EXPECT_EQ(1u, i65minus.countPopulation()); 75 } 76 77 TEST(APIntTest, i128_PositiveCount) { 78 APInt u128max = APInt::getAllOnesValue(128); 79 EXPECT_EQ(128u, u128max.countLeadingOnes()); 80 EXPECT_EQ(0u, u128max.countLeadingZeros()); 81 EXPECT_EQ(128u, u128max.getActiveBits()); 82 EXPECT_EQ(0u, u128max.countTrailingZeros()); 83 EXPECT_EQ(128u, u128max.countTrailingOnes()); 84 EXPECT_EQ(128u, u128max.countPopulation()); 85 86 APInt u64max(128, static_cast<uint64_t>(-1), false); 87 EXPECT_EQ(64u, u64max.countLeadingZeros()); 88 EXPECT_EQ(0u, u64max.countLeadingOnes()); 89 EXPECT_EQ(64u, u64max.getActiveBits()); 90 EXPECT_EQ(0u, u64max.countTrailingZeros()); 91 EXPECT_EQ(64u, u64max.countTrailingOnes()); 92 EXPECT_EQ(64u, u64max.countPopulation()); 93 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 94 95 APInt zero(128, 0, true); 96 EXPECT_EQ(128u, zero.countLeadingZeros()); 97 EXPECT_EQ(0u, zero.countLeadingOnes()); 98 EXPECT_EQ(0u, zero.getActiveBits()); 99 EXPECT_EQ(128u, zero.countTrailingZeros()); 100 EXPECT_EQ(0u, zero.countTrailingOnes()); 101 EXPECT_EQ(0u, zero.countPopulation()); 102 EXPECT_EQ(0u, zero.getSExtValue()); 103 EXPECT_EQ(0u, zero.getZExtValue()); 104 105 APInt one(128, 1, true); 106 EXPECT_EQ(127u, one.countLeadingZeros()); 107 EXPECT_EQ(0u, one.countLeadingOnes()); 108 EXPECT_EQ(1u, one.getActiveBits()); 109 EXPECT_EQ(0u, one.countTrailingZeros()); 110 EXPECT_EQ(1u, one.countTrailingOnes()); 111 EXPECT_EQ(1u, one.countPopulation()); 112 EXPECT_EQ(1, one.getSExtValue()); 113 EXPECT_EQ(1u, one.getZExtValue()); 114 } 115 116 TEST(APIntTest, i1) { 117 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 118 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 119 const APInt zero(1, 0); 120 const APInt one(1, 1); 121 const APInt two(1, 2); 122 123 EXPECT_EQ(0, neg_two.getSExtValue()); 124 EXPECT_EQ(-1, neg_one.getSExtValue()); 125 EXPECT_EQ(1u, neg_one.getZExtValue()); 126 EXPECT_EQ(0u, zero.getZExtValue()); 127 EXPECT_EQ(-1, one.getSExtValue()); 128 EXPECT_EQ(1u, one.getZExtValue()); 129 EXPECT_EQ(0u, two.getZExtValue()); 130 EXPECT_EQ(0, two.getSExtValue()); 131 132 // Basic equalities for 1-bit values. 133 EXPECT_EQ(zero, two); 134 EXPECT_EQ(zero, neg_two); 135 EXPECT_EQ(one, neg_one); 136 EXPECT_EQ(two, neg_two); 137 138 // Min/max signed values. 139 EXPECT_TRUE(zero.isMaxSignedValue()); 140 EXPECT_FALSE(one.isMaxSignedValue()); 141 EXPECT_FALSE(zero.isMinSignedValue()); 142 EXPECT_TRUE(one.isMinSignedValue()); 143 144 // Additions. 145 EXPECT_EQ(two, one + one); 146 EXPECT_EQ(zero, neg_one + one); 147 EXPECT_EQ(neg_two, neg_one + neg_one); 148 149 // Subtractions. 150 EXPECT_EQ(neg_two, neg_one - one); 151 EXPECT_EQ(two, one - neg_one); 152 EXPECT_EQ(zero, one - one); 153 154 // Shifts. 155 EXPECT_EQ(zero, one << one); 156 EXPECT_EQ(one, one << zero); 157 EXPECT_EQ(zero, one.shl(1)); 158 EXPECT_EQ(one, one.shl(0)); 159 EXPECT_EQ(zero, one.lshr(1)); 160 EXPECT_EQ(zero, one.ashr(1)); 161 162 // Rotates. 163 EXPECT_EQ(one, one.rotl(0)); 164 EXPECT_EQ(one, one.rotl(1)); 165 EXPECT_EQ(one, one.rotr(0)); 166 EXPECT_EQ(one, one.rotr(1)); 167 168 // Multiplies. 169 EXPECT_EQ(neg_one, neg_one * one); 170 EXPECT_EQ(neg_one, one * neg_one); 171 EXPECT_EQ(one, neg_one * neg_one); 172 EXPECT_EQ(one, one * one); 173 174 // Divides. 175 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 176 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 177 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 178 EXPECT_EQ(one, one.sdiv(one)); 179 180 EXPECT_EQ(neg_one, one.udiv(neg_one)); 181 EXPECT_EQ(neg_one, neg_one.udiv(one)); 182 EXPECT_EQ(one, neg_one.udiv(neg_one)); 183 EXPECT_EQ(one, one.udiv(one)); 184 185 // Remainders. 186 EXPECT_EQ(zero, neg_one.srem(one)); 187 EXPECT_EQ(zero, neg_one.urem(one)); 188 EXPECT_EQ(zero, one.srem(neg_one)); 189 190 // sdivrem 191 { 192 APInt q(8, 0); 193 APInt r(8, 0); 194 APInt one(8, 1); 195 APInt two(8, 2); 196 APInt nine(8, 9); 197 APInt four(8, 4); 198 199 EXPECT_EQ(nine.srem(two), one); 200 EXPECT_EQ(nine.srem(-two), one); 201 EXPECT_EQ((-nine).srem(two), -one); 202 EXPECT_EQ((-nine).srem(-two), -one); 203 204 APInt::sdivrem(nine, two, q, r); 205 EXPECT_EQ(four, q); 206 EXPECT_EQ(one, r); 207 APInt::sdivrem(-nine, two, q, r); 208 EXPECT_EQ(-four, q); 209 EXPECT_EQ(-one, r); 210 APInt::sdivrem(nine, -two, q, r); 211 EXPECT_EQ(-four, q); 212 EXPECT_EQ(one, r); 213 APInt::sdivrem(-nine, -two, q, r); 214 EXPECT_EQ(four, q); 215 EXPECT_EQ(-one, r); 216 } 217 } 218 219 TEST(APIntTest, compare) { 220 std::array<APInt, 5> testVals{{ 221 APInt{16, 2}, 222 APInt{16, 1}, 223 APInt{16, 0}, 224 APInt{16, (uint64_t)-1, true}, 225 APInt{16, (uint64_t)-2, true}, 226 }}; 227 228 for (auto &arg1 : testVals) 229 for (auto &arg2 : testVals) { 230 auto uv1 = arg1.getZExtValue(); 231 auto uv2 = arg2.getZExtValue(); 232 auto sv1 = arg1.getSExtValue(); 233 auto sv2 = arg2.getSExtValue(); 234 235 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 236 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 237 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 238 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 239 240 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 241 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 242 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 243 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 244 245 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 246 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 247 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 248 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 249 250 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 251 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 252 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 253 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 254 } 255 } 256 257 TEST(APIntTest, compareWithRawIntegers) { 258 EXPECT_TRUE(!APInt(8, 1).uge(256)); 259 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 260 EXPECT_TRUE( APInt(8, 1).ule(256)); 261 EXPECT_TRUE( APInt(8, 1).ult(256)); 262 EXPECT_TRUE(!APInt(8, 1).sge(256)); 263 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 264 EXPECT_TRUE( APInt(8, 1).sle(256)); 265 EXPECT_TRUE( APInt(8, 1).slt(256)); 266 EXPECT_TRUE(!(APInt(8, 0) == 256)); 267 EXPECT_TRUE( APInt(8, 0) != 256); 268 EXPECT_TRUE(!(APInt(8, 1) == 256)); 269 EXPECT_TRUE( APInt(8, 1) != 256); 270 271 auto uint64max = UINT64_MAX; 272 auto int64max = INT64_MAX; 273 auto int64min = INT64_MIN; 274 275 auto u64 = APInt{128, uint64max}; 276 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 277 auto big = u64 + 1; 278 279 EXPECT_TRUE( u64.uge(uint64max)); 280 EXPECT_TRUE(!u64.ugt(uint64max)); 281 EXPECT_TRUE( u64.ule(uint64max)); 282 EXPECT_TRUE(!u64.ult(uint64max)); 283 EXPECT_TRUE( u64.sge(int64max)); 284 EXPECT_TRUE( u64.sgt(int64max)); 285 EXPECT_TRUE(!u64.sle(int64max)); 286 EXPECT_TRUE(!u64.slt(int64max)); 287 EXPECT_TRUE( u64.sge(int64min)); 288 EXPECT_TRUE( u64.sgt(int64min)); 289 EXPECT_TRUE(!u64.sle(int64min)); 290 EXPECT_TRUE(!u64.slt(int64min)); 291 292 EXPECT_TRUE(u64 == uint64max); 293 EXPECT_TRUE(u64 != int64max); 294 EXPECT_TRUE(u64 != int64min); 295 296 EXPECT_TRUE(!s64.uge(uint64max)); 297 EXPECT_TRUE(!s64.ugt(uint64max)); 298 EXPECT_TRUE( s64.ule(uint64max)); 299 EXPECT_TRUE( s64.ult(uint64max)); 300 EXPECT_TRUE( s64.sge(int64max)); 301 EXPECT_TRUE(!s64.sgt(int64max)); 302 EXPECT_TRUE( s64.sle(int64max)); 303 EXPECT_TRUE(!s64.slt(int64max)); 304 EXPECT_TRUE( s64.sge(int64min)); 305 EXPECT_TRUE( s64.sgt(int64min)); 306 EXPECT_TRUE(!s64.sle(int64min)); 307 EXPECT_TRUE(!s64.slt(int64min)); 308 309 EXPECT_TRUE(s64 != uint64max); 310 EXPECT_TRUE(s64 == int64max); 311 EXPECT_TRUE(s64 != int64min); 312 313 EXPECT_TRUE( big.uge(uint64max)); 314 EXPECT_TRUE( big.ugt(uint64max)); 315 EXPECT_TRUE(!big.ule(uint64max)); 316 EXPECT_TRUE(!big.ult(uint64max)); 317 EXPECT_TRUE( big.sge(int64max)); 318 EXPECT_TRUE( big.sgt(int64max)); 319 EXPECT_TRUE(!big.sle(int64max)); 320 EXPECT_TRUE(!big.slt(int64max)); 321 EXPECT_TRUE( big.sge(int64min)); 322 EXPECT_TRUE( big.sgt(int64min)); 323 EXPECT_TRUE(!big.sle(int64min)); 324 EXPECT_TRUE(!big.slt(int64min)); 325 326 EXPECT_TRUE(big != uint64max); 327 EXPECT_TRUE(big != int64max); 328 EXPECT_TRUE(big != int64min); 329 } 330 331 TEST(APIntTest, compareWithInt64Min) { 332 int64_t edge = INT64_MIN; 333 int64_t edgeP1 = edge + 1; 334 int64_t edgeM1 = INT64_MAX; 335 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 336 337 EXPECT_TRUE(!a.slt(edge)); 338 EXPECT_TRUE( a.sle(edge)); 339 EXPECT_TRUE(!a.sgt(edge)); 340 EXPECT_TRUE( a.sge(edge)); 341 EXPECT_TRUE( a.slt(edgeP1)); 342 EXPECT_TRUE( a.sle(edgeP1)); 343 EXPECT_TRUE(!a.sgt(edgeP1)); 344 EXPECT_TRUE(!a.sge(edgeP1)); 345 EXPECT_TRUE( a.slt(edgeM1)); 346 EXPECT_TRUE( a.sle(edgeM1)); 347 EXPECT_TRUE(!a.sgt(edgeM1)); 348 EXPECT_TRUE(!a.sge(edgeM1)); 349 } 350 351 TEST(APIntTest, compareWithHalfInt64Max) { 352 uint64_t edge = 0x4000000000000000; 353 uint64_t edgeP1 = edge + 1; 354 uint64_t edgeM1 = edge - 1; 355 auto a = APInt{64, edge}; 356 357 EXPECT_TRUE(!a.ult(edge)); 358 EXPECT_TRUE( a.ule(edge)); 359 EXPECT_TRUE(!a.ugt(edge)); 360 EXPECT_TRUE( a.uge(edge)); 361 EXPECT_TRUE( a.ult(edgeP1)); 362 EXPECT_TRUE( a.ule(edgeP1)); 363 EXPECT_TRUE(!a.ugt(edgeP1)); 364 EXPECT_TRUE(!a.uge(edgeP1)); 365 EXPECT_TRUE(!a.ult(edgeM1)); 366 EXPECT_TRUE(!a.ule(edgeM1)); 367 EXPECT_TRUE( a.ugt(edgeM1)); 368 EXPECT_TRUE( a.uge(edgeM1)); 369 370 EXPECT_TRUE(!a.slt(edge)); 371 EXPECT_TRUE( a.sle(edge)); 372 EXPECT_TRUE(!a.sgt(edge)); 373 EXPECT_TRUE( a.sge(edge)); 374 EXPECT_TRUE( a.slt(edgeP1)); 375 EXPECT_TRUE( a.sle(edgeP1)); 376 EXPECT_TRUE(!a.sgt(edgeP1)); 377 EXPECT_TRUE(!a.sge(edgeP1)); 378 EXPECT_TRUE(!a.slt(edgeM1)); 379 EXPECT_TRUE(!a.sle(edgeM1)); 380 EXPECT_TRUE( a.sgt(edgeM1)); 381 EXPECT_TRUE( a.sge(edgeM1)); 382 } 383 384 385 // Tests different div/rem varaints using scheme (a * b + c) / a 386 void testDiv(APInt a, APInt b, APInt c) { 387 ASSERT_TRUE(a.uge(b)); // Must: a >= b 388 ASSERT_TRUE(a.ugt(c)); // Must: a > c 389 390 auto p = a * b + c; 391 392 auto q = p.udiv(a); 393 auto r = p.urem(a); 394 EXPECT_EQ(b, q); 395 EXPECT_EQ(c, r); 396 APInt::udivrem(p, a, q, r); 397 EXPECT_EQ(b, q); 398 EXPECT_EQ(c, r); 399 q = p.sdiv(a); 400 r = p.srem(a); 401 EXPECT_EQ(b, q); 402 EXPECT_EQ(c, r); 403 APInt::sdivrem(p, a, q, r); 404 EXPECT_EQ(b, q); 405 EXPECT_EQ(c, r); 406 407 if (b.ugt(c)) { // Test also symmetric case 408 q = p.udiv(b); 409 r = p.urem(b); 410 EXPECT_EQ(a, q); 411 EXPECT_EQ(c, r); 412 APInt::udivrem(p, b, q, r); 413 EXPECT_EQ(a, q); 414 EXPECT_EQ(c, r); 415 q = p.sdiv(b); 416 r = p.srem(b); 417 EXPECT_EQ(a, q); 418 EXPECT_EQ(c, r); 419 APInt::sdivrem(p, b, q, r); 420 EXPECT_EQ(a, q); 421 EXPECT_EQ(c, r); 422 } 423 } 424 425 TEST(APIntTest, divrem_big1) { 426 // Tests KnuthDiv rare step D6 427 testDiv({256, "1ffffffffffffffff", 16}, 428 {256, "1ffffffffffffffff", 16}, 429 {256, 0}); 430 } 431 432 TEST(APIntTest, divrem_big2) { 433 // Tests KnuthDiv rare step D6 434 testDiv({1024, "112233ceff" 435 "cecece000000ffffffffffffffffffff" 436 "ffffffffffffffffffffffffffffffff" 437 "ffffffffffffffffffffffffffffffff" 438 "ffffffffffffffffffffffffffffff33", 16}, 439 {1024, "111111ffffffffffffffff" 440 "ffffffffffffffffffffffffffffffff" 441 "fffffffffffffffffffffffffffffccf" 442 "ffffffffffffffffffffffffffffff00", 16}, 443 {1024, 7919}); 444 } 445 446 TEST(APIntTest, divrem_big3) { 447 // Tests KnuthDiv case without shift 448 testDiv({256, "80000001ffffffffffffffff", 16}, 449 {256, "ffffffffffffff0000000", 16}, 450 {256, 4219}); 451 } 452 453 TEST(APIntTest, divrem_big4) { 454 // Tests heap allocation in divide() enfoced by huge numbers 455 testDiv(APInt{4096, 5}.shl(2001), 456 APInt{4096, 1}.shl(2000), 457 APInt{4096, 4219*13}); 458 } 459 460 TEST(APIntTest, divrem_big5) { 461 // Tests one word divisor case of divide() 462 testDiv(APInt{1024, 19}.shl(811), 463 APInt{1024, 4356013}, // one word 464 APInt{1024, 1}); 465 } 466 467 TEST(APIntTest, divrem_big6) { 468 // Tests some rare "borrow" cases in D4 step 469 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 470 APInt{512, "10000000000000001000000000000001", 16}, 471 APInt{512, "10000000000000000000000000000000", 16}); 472 } 473 474 TEST(APIntTest, divrem_big7) { 475 // Yet another test for KnuthDiv rare step D6. 476 testDiv({224, "800000008000000200000005", 16}, 477 {224, "fffffffd", 16}, 478 {224, "80000000800000010000000f", 16}); 479 } 480 481 TEST(APIntTest, fromString) { 482 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 483 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 484 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 485 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 486 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 487 488 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 489 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 490 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 491 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 492 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 493 494 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 495 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 496 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 497 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 498 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 499 500 501 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); 502 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); 503 EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); 504 EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); 505 EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); 506 EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); 507 508 EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); 509 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 510 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 511 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 512 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 513 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 514 515 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 516 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 517 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 518 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 519 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 520 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 521 522 523 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 524 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 525 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 526 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 527 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 528 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 529 530 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 531 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 532 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 533 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 534 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 535 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 536 537 538 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 539 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 540 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 541 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 542 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 543 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 544 545 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 546 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 547 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 548 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 549 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 550 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 551 552 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 553 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 554 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 555 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 556 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 557 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 558 559 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 560 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 561 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 562 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 563 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 564 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 565 } 566 567 TEST(APIntTest, FromArray) { 568 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 569 } 570 571 TEST(APIntTest, StringBitsNeeded2) { 572 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 573 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 574 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 575 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 576 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 577 578 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 579 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 580 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 581 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 582 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 583 584 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 585 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 586 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 587 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 588 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 589 } 590 591 TEST(APIntTest, StringBitsNeeded8) { 592 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 593 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 594 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 595 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 596 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 597 598 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 599 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 600 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 601 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 602 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 603 604 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 605 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 606 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 607 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 608 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 609 } 610 611 TEST(APIntTest, StringBitsNeeded10) { 612 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 613 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 614 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 615 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 616 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 617 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 618 619 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 620 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 621 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 622 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 623 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 624 625 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 626 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 627 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 628 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 629 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 630 } 631 632 TEST(APIntTest, StringBitsNeeded16) { 633 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 634 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 635 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 636 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 637 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 638 639 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 640 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 641 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 642 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 643 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 644 645 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 646 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 647 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 648 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 649 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 650 } 651 652 TEST(APIntTest, toString) { 653 SmallString<16> S; 654 bool isSigned; 655 656 APInt(8, 0).toString(S, 2, true, true); 657 EXPECT_EQ(S.str().str(), "0b0"); 658 S.clear(); 659 APInt(8, 0).toString(S, 8, true, true); 660 EXPECT_EQ(S.str().str(), "00"); 661 S.clear(); 662 APInt(8, 0).toString(S, 10, true, true); 663 EXPECT_EQ(S.str().str(), "0"); 664 S.clear(); 665 APInt(8, 0).toString(S, 16, true, true); 666 EXPECT_EQ(S.str().str(), "0x0"); 667 S.clear(); 668 APInt(8, 0).toString(S, 36, true, false); 669 EXPECT_EQ(S.str().str(), "0"); 670 S.clear(); 671 672 isSigned = false; 673 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 674 EXPECT_EQ(S.str().str(), "0b11111111"); 675 S.clear(); 676 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 677 EXPECT_EQ(S.str().str(), "0377"); 678 S.clear(); 679 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 680 EXPECT_EQ(S.str().str(), "255"); 681 S.clear(); 682 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 683 EXPECT_EQ(S.str().str(), "0xFF"); 684 S.clear(); 685 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 686 EXPECT_EQ(S.str().str(), "73"); 687 S.clear(); 688 689 isSigned = true; 690 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 691 EXPECT_EQ(S.str().str(), "-0b1"); 692 S.clear(); 693 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 694 EXPECT_EQ(S.str().str(), "-01"); 695 S.clear(); 696 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 697 EXPECT_EQ(S.str().str(), "-1"); 698 S.clear(); 699 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 700 EXPECT_EQ(S.str().str(), "-0x1"); 701 S.clear(); 702 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 703 EXPECT_EQ(S.str().str(), "-1"); 704 S.clear(); 705 } 706 707 TEST(APIntTest, Log2) { 708 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 709 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 710 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 711 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 712 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 713 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 714 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 715 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 716 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 717 } 718 719 TEST(APIntTest, magic) { 720 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 721 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 722 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 723 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 724 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 725 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 726 } 727 728 TEST(APIntTest, magicu) { 729 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 730 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 731 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 732 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 733 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 734 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 735 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 736 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 737 } 738 739 #ifdef GTEST_HAS_DEATH_TEST 740 #ifndef NDEBUG 741 TEST(APIntTest, StringDeath) { 742 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 743 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 744 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 745 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 746 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 747 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 748 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 749 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 750 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 751 } 752 #endif 753 #endif 754 755 TEST(APIntTest, mul_clear) { 756 APInt ValA(65, -1ULL); 757 APInt ValB(65, 4); 758 APInt ValC(65, 0); 759 ValC = ValA * ValB; 760 ValA *= ValB; 761 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 762 } 763 764 TEST(APIntTest, Rotate) { 765 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 766 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 767 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 768 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 769 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 770 771 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 772 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 773 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 774 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 775 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 776 777 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 778 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 779 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 780 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 781 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 782 783 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 784 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 785 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 786 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 787 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 788 789 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16); 790 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16); 791 EXPECT_EQ(Rot, Big.rotr(144)); 792 } 793 794 TEST(APIntTest, Splat) { 795 APInt ValA(8, 0x01); 796 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 797 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 798 799 APInt ValB(3, 5); 800 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 801 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 802 } 803 804 TEST(APIntTest, tcDecrement) { 805 // Test single word decrement. 806 807 // No out borrow. 808 { 809 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 810 integerPart carry = APInt::tcDecrement(&singleWord, 1); 811 EXPECT_EQ(carry, integerPart(0)); 812 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 813 } 814 815 // With out borrow. 816 { 817 integerPart singleWord = 0; 818 integerPart carry = APInt::tcDecrement(&singleWord, 1); 819 EXPECT_EQ(carry, integerPart(1)); 820 EXPECT_EQ(singleWord, ~integerPart(0)); 821 } 822 823 // Test multiword decrement. 824 825 // No across word borrow, no out borrow. 826 { 827 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 828 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 829 APInt::tcDecrement(test, 4); 830 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 831 } 832 833 // 1 across word borrow, no out borrow. 834 { 835 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 836 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 837 integerPart carry = APInt::tcDecrement(test, 4); 838 EXPECT_EQ(carry, integerPart(0)); 839 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 840 } 841 842 // 2 across word borrow, no out borrow. 843 { 844 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 845 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 846 integerPart carry = APInt::tcDecrement(test, 4); 847 EXPECT_EQ(carry, integerPart(0)); 848 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 849 } 850 851 // 3 across word borrow, no out borrow. 852 { 853 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 854 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 855 integerPart carry = APInt::tcDecrement(test, 4); 856 EXPECT_EQ(carry, integerPart(0)); 857 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 858 } 859 860 // 3 across word borrow, with out borrow. 861 { 862 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 863 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 864 integerPart carry = APInt::tcDecrement(test, 4); 865 EXPECT_EQ(carry, integerPart(1)); 866 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 867 } 868 } 869 870 TEST(APIntTest, arrayAccess) { 871 // Single word check. 872 uint64_t E1 = 0x2CA7F46BF6569915ULL; 873 APInt A1(64, E1); 874 for (unsigned i = 0, e = 64; i < e; ++i) { 875 EXPECT_EQ(bool(E1 & (1ULL << i)), 876 A1[i]); 877 } 878 879 // Multiword check. 880 integerPart E2[4] = { 881 0xEB6EB136591CBA21ULL, 882 0x7B9358BD6A33F10AULL, 883 0x7E7FFA5EADD8846ULL, 884 0x305F341CA00B613DULL 885 }; 886 APInt A2(integerPartWidth*4, E2); 887 for (unsigned i = 0; i < 4; ++i) { 888 for (unsigned j = 0; j < integerPartWidth; ++j) { 889 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 890 A2[i*integerPartWidth + j]); 891 } 892 } 893 } 894 895 TEST(APIntTest, LargeAPIntConstruction) { 896 // Check that we can properly construct very large APInt. It is very 897 // unlikely that people will ever do this, but it is a legal input, 898 // so we should not crash on it. 899 APInt A9(UINT32_MAX, 0); 900 EXPECT_FALSE(A9.getBoolValue()); 901 } 902 903 TEST(APIntTest, nearestLogBase2) { 904 // Single word check. 905 906 // Test round up. 907 uint64_t I1 = 0x1800001; 908 APInt A1(64, I1); 909 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 910 911 // Test round down. 912 uint64_t I2 = 0x1000011; 913 APInt A2(64, I2); 914 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 915 916 // Test ties round up. 917 uint64_t I3 = 0x1800000; 918 APInt A3(64, I3); 919 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 920 921 // Multiple word check. 922 923 // Test round up. 924 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 925 APInt A4(integerPartWidth*4, I4); 926 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 927 928 // Test round down. 929 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 930 APInt A5(integerPartWidth*4, I5); 931 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 932 933 // Test ties round up. 934 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 935 APInt A6(integerPartWidth*4, I6); 936 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 937 938 // Test BitWidth == 1 special cases. 939 APInt A7(1, 1); 940 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 941 APInt A8(1, 0); 942 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 943 944 // Test the zero case when we have a bit width large enough such 945 // that the bit width is larger than UINT32_MAX-1. 946 APInt A9(UINT32_MAX, 0); 947 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 948 } 949 950 TEST(APIntTest, IsSplat) { 951 APInt A(32, 0x01010101); 952 EXPECT_FALSE(A.isSplat(1)); 953 EXPECT_FALSE(A.isSplat(2)); 954 EXPECT_FALSE(A.isSplat(4)); 955 EXPECT_TRUE(A.isSplat(8)); 956 EXPECT_TRUE(A.isSplat(16)); 957 EXPECT_TRUE(A.isSplat(32)); 958 959 APInt B(24, 0xAAAAAA); 960 EXPECT_FALSE(B.isSplat(1)); 961 EXPECT_TRUE(B.isSplat(2)); 962 EXPECT_TRUE(B.isSplat(4)); 963 EXPECT_TRUE(B.isSplat(8)); 964 EXPECT_TRUE(B.isSplat(24)); 965 966 APInt C(24, 0xABAAAB); 967 EXPECT_FALSE(C.isSplat(1)); 968 EXPECT_FALSE(C.isSplat(2)); 969 EXPECT_FALSE(C.isSplat(4)); 970 EXPECT_FALSE(C.isSplat(8)); 971 EXPECT_TRUE(C.isSplat(24)); 972 973 APInt D(32, 0xABBAABBA); 974 EXPECT_FALSE(D.isSplat(1)); 975 EXPECT_FALSE(D.isSplat(2)); 976 EXPECT_FALSE(D.isSplat(4)); 977 EXPECT_FALSE(D.isSplat(8)); 978 EXPECT_TRUE(D.isSplat(16)); 979 EXPECT_TRUE(D.isSplat(32)); 980 981 APInt E(32, 0); 982 EXPECT_TRUE(E.isSplat(1)); 983 EXPECT_TRUE(E.isSplat(2)); 984 EXPECT_TRUE(E.isSplat(4)); 985 EXPECT_TRUE(E.isSplat(8)); 986 EXPECT_TRUE(E.isSplat(16)); 987 EXPECT_TRUE(E.isSplat(32)); 988 } 989 990 #if defined(__clang__) 991 // Disable the pragma warning from versions of Clang without -Wself-move 992 #pragma clang diagnostic push 993 #pragma clang diagnostic ignored "-Wunknown-pragmas" 994 // Disable the warning that triggers on exactly what is being tested. 995 #pragma clang diagnostic push 996 #pragma clang diagnostic ignored "-Wself-move" 997 #endif 998 TEST(APIntTest, SelfMoveAssignment) { 999 APInt X(32, 0xdeadbeef); 1000 X = std::move(X); 1001 EXPECT_EQ(32u, X.getBitWidth()); 1002 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1003 1004 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1005 APInt Y(128, Bits); 1006 Y = std::move(Y); 1007 EXPECT_EQ(128u, Y.getBitWidth()); 1008 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1009 const uint64_t *Raw = Y.getRawData(); 1010 EXPECT_EQ(2u, Y.getNumWords()); 1011 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1012 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1013 } 1014 #if defined(__clang__) 1015 #pragma clang diagnostic pop 1016 #pragma clang diagnostic pop 1017 #endif 1018 } 1019