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(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, i128_NegativeCount) { 36 APInt Minus3(128, static_cast<uint64_t>(-3), true); 37 EXPECT_EQ(126u, Minus3.countLeadingOnes()); 38 EXPECT_EQ(-3, Minus3.getSExtValue()); 39 40 APInt Minus1(128, static_cast<uint64_t>(-1), true); 41 EXPECT_EQ(0u, Minus1.countLeadingZeros()); 42 EXPECT_EQ(128u, Minus1.countLeadingOnes()); 43 EXPECT_EQ(128u, Minus1.getActiveBits()); 44 EXPECT_EQ(0u, Minus1.countTrailingZeros()); 45 EXPECT_EQ(128u, Minus1.countTrailingOnes()); 46 EXPECT_EQ(128u, Minus1.countPopulation()); 47 EXPECT_EQ(-1, Minus1.getSExtValue()); 48 } 49 50 // XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it. 51 #if defined(__llvm__) || !defined(__FreeBSD__) 52 53 TEST(APIntTest, i33_Count) { 54 APInt i33minus2(33, static_cast<uint64_t>(-2), true); 55 EXPECT_EQ(0u, i33minus2.countLeadingZeros()); 56 EXPECT_EQ(32u, i33minus2.countLeadingOnes()); 57 EXPECT_EQ(33u, i33minus2.getActiveBits()); 58 EXPECT_EQ(1u, i33minus2.countTrailingZeros()); 59 EXPECT_EQ(32u, i33minus2.countPopulation()); 60 EXPECT_EQ(-2, i33minus2.getSExtValue()); 61 EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); 62 } 63 64 #endif 65 66 TEST(APIntTest, i65_Count) { 67 APInt i65(65, 0, true); 68 EXPECT_EQ(65u, i65.countLeadingZeros()); 69 EXPECT_EQ(0u, i65.countLeadingOnes()); 70 EXPECT_EQ(0u, i65.getActiveBits()); 71 EXPECT_EQ(1u, i65.getActiveWords()); 72 EXPECT_EQ(65u, i65.countTrailingZeros()); 73 EXPECT_EQ(0u, i65.countPopulation()); 74 75 APInt i65minus(65, 0, true); 76 i65minus.setBit(64); 77 EXPECT_EQ(0u, i65minus.countLeadingZeros()); 78 EXPECT_EQ(1u, i65minus.countLeadingOnes()); 79 EXPECT_EQ(65u, i65minus.getActiveBits()); 80 EXPECT_EQ(64u, i65minus.countTrailingZeros()); 81 EXPECT_EQ(1u, i65minus.countPopulation()); 82 } 83 84 TEST(APIntTest, i128_PositiveCount) { 85 APInt u128max = APInt::getAllOnesValue(128); 86 EXPECT_EQ(128u, u128max.countLeadingOnes()); 87 EXPECT_EQ(0u, u128max.countLeadingZeros()); 88 EXPECT_EQ(128u, u128max.getActiveBits()); 89 EXPECT_EQ(0u, u128max.countTrailingZeros()); 90 EXPECT_EQ(128u, u128max.countTrailingOnes()); 91 EXPECT_EQ(128u, u128max.countPopulation()); 92 93 APInt u64max(128, static_cast<uint64_t>(-1), false); 94 EXPECT_EQ(64u, u64max.countLeadingZeros()); 95 EXPECT_EQ(0u, u64max.countLeadingOnes()); 96 EXPECT_EQ(64u, u64max.getActiveBits()); 97 EXPECT_EQ(0u, u64max.countTrailingZeros()); 98 EXPECT_EQ(64u, u64max.countTrailingOnes()); 99 EXPECT_EQ(64u, u64max.countPopulation()); 100 EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); 101 102 APInt zero(128, 0, true); 103 EXPECT_EQ(128u, zero.countLeadingZeros()); 104 EXPECT_EQ(0u, zero.countLeadingOnes()); 105 EXPECT_EQ(0u, zero.getActiveBits()); 106 EXPECT_EQ(128u, zero.countTrailingZeros()); 107 EXPECT_EQ(0u, zero.countTrailingOnes()); 108 EXPECT_EQ(0u, zero.countPopulation()); 109 EXPECT_EQ(0u, zero.getSExtValue()); 110 EXPECT_EQ(0u, zero.getZExtValue()); 111 112 APInt one(128, 1, true); 113 EXPECT_EQ(127u, one.countLeadingZeros()); 114 EXPECT_EQ(0u, one.countLeadingOnes()); 115 EXPECT_EQ(1u, one.getActiveBits()); 116 EXPECT_EQ(0u, one.countTrailingZeros()); 117 EXPECT_EQ(1u, one.countTrailingOnes()); 118 EXPECT_EQ(1u, one.countPopulation()); 119 EXPECT_EQ(1, one.getSExtValue()); 120 EXPECT_EQ(1u, one.getZExtValue()); 121 } 122 123 TEST(APIntTest, i1) { 124 const APInt neg_two(1, static_cast<uint64_t>(-2), true); 125 const APInt neg_one(1, static_cast<uint64_t>(-1), true); 126 const APInt zero(1, 0); 127 const APInt one(1, 1); 128 const APInt two(1, 2); 129 130 EXPECT_EQ(0, neg_two.getSExtValue()); 131 EXPECT_EQ(-1, neg_one.getSExtValue()); 132 EXPECT_EQ(1u, neg_one.getZExtValue()); 133 EXPECT_EQ(0u, zero.getZExtValue()); 134 EXPECT_EQ(-1, one.getSExtValue()); 135 EXPECT_EQ(1u, one.getZExtValue()); 136 EXPECT_EQ(0u, two.getZExtValue()); 137 EXPECT_EQ(0, two.getSExtValue()); 138 139 // Basic equalities for 1-bit values. 140 EXPECT_EQ(zero, two); 141 EXPECT_EQ(zero, neg_two); 142 EXPECT_EQ(one, neg_one); 143 EXPECT_EQ(two, neg_two); 144 145 // Min/max signed values. 146 EXPECT_TRUE(zero.isMaxSignedValue()); 147 EXPECT_FALSE(one.isMaxSignedValue()); 148 EXPECT_FALSE(zero.isMinSignedValue()); 149 EXPECT_TRUE(one.isMinSignedValue()); 150 151 // Additions. 152 EXPECT_EQ(two, one + one); 153 EXPECT_EQ(zero, neg_one + one); 154 EXPECT_EQ(neg_two, neg_one + neg_one); 155 156 // Subtractions. 157 EXPECT_EQ(neg_two, neg_one - one); 158 EXPECT_EQ(two, one - neg_one); 159 EXPECT_EQ(zero, one - one); 160 161 // Shifts. 162 EXPECT_EQ(zero, one << one); 163 EXPECT_EQ(one, one << zero); 164 EXPECT_EQ(zero, one.shl(1)); 165 EXPECT_EQ(one, one.shl(0)); 166 EXPECT_EQ(zero, one.lshr(1)); 167 EXPECT_EQ(zero, one.ashr(1)); 168 169 // Rotates. 170 EXPECT_EQ(one, one.rotl(0)); 171 EXPECT_EQ(one, one.rotl(1)); 172 EXPECT_EQ(one, one.rotr(0)); 173 EXPECT_EQ(one, one.rotr(1)); 174 175 // Multiplies. 176 EXPECT_EQ(neg_one, neg_one * one); 177 EXPECT_EQ(neg_one, one * neg_one); 178 EXPECT_EQ(one, neg_one * neg_one); 179 EXPECT_EQ(one, one * one); 180 181 // Divides. 182 EXPECT_EQ(neg_one, one.sdiv(neg_one)); 183 EXPECT_EQ(neg_one, neg_one.sdiv(one)); 184 EXPECT_EQ(one, neg_one.sdiv(neg_one)); 185 EXPECT_EQ(one, one.sdiv(one)); 186 187 EXPECT_EQ(neg_one, one.udiv(neg_one)); 188 EXPECT_EQ(neg_one, neg_one.udiv(one)); 189 EXPECT_EQ(one, neg_one.udiv(neg_one)); 190 EXPECT_EQ(one, one.udiv(one)); 191 192 // Remainders. 193 EXPECT_EQ(zero, neg_one.srem(one)); 194 EXPECT_EQ(zero, neg_one.urem(one)); 195 EXPECT_EQ(zero, one.srem(neg_one)); 196 197 // sdivrem 198 { 199 APInt q(8, 0); 200 APInt r(8, 0); 201 APInt one(8, 1); 202 APInt two(8, 2); 203 APInt nine(8, 9); 204 APInt four(8, 4); 205 206 EXPECT_EQ(nine.srem(two), one); 207 EXPECT_EQ(nine.srem(-two), one); 208 EXPECT_EQ((-nine).srem(two), -one); 209 EXPECT_EQ((-nine).srem(-two), -one); 210 211 APInt::sdivrem(nine, two, q, r); 212 EXPECT_EQ(four, q); 213 EXPECT_EQ(one, r); 214 APInt::sdivrem(-nine, two, q, r); 215 EXPECT_EQ(-four, q); 216 EXPECT_EQ(-one, r); 217 APInt::sdivrem(nine, -two, q, r); 218 EXPECT_EQ(-four, q); 219 EXPECT_EQ(one, r); 220 APInt::sdivrem(-nine, -two, q, r); 221 EXPECT_EQ(four, q); 222 EXPECT_EQ(-one, r); 223 } 224 } 225 226 TEST(APIntTest, compare) { 227 std::array<APInt, 5> testVals{{ 228 APInt{16, 2}, 229 APInt{16, 1}, 230 APInt{16, 0}, 231 APInt{16, (uint64_t)-1, true}, 232 APInt{16, (uint64_t)-2, true}, 233 }}; 234 235 for (auto &arg1 : testVals) 236 for (auto &arg2 : testVals) { 237 auto uv1 = arg1.getZExtValue(); 238 auto uv2 = arg2.getZExtValue(); 239 auto sv1 = arg1.getSExtValue(); 240 auto sv2 = arg2.getSExtValue(); 241 242 EXPECT_EQ(uv1 < uv2, arg1.ult(arg2)); 243 EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2)); 244 EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2)); 245 EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2)); 246 247 EXPECT_EQ(sv1 < sv2, arg1.slt(arg2)); 248 EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2)); 249 EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2)); 250 EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2)); 251 252 EXPECT_EQ(uv1 < uv2, arg1.ult(uv2)); 253 EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2)); 254 EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2)); 255 EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2)); 256 257 EXPECT_EQ(sv1 < sv2, arg1.slt(sv2)); 258 EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2)); 259 EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2)); 260 EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2)); 261 } 262 } 263 264 TEST(APIntTest, compareWithRawIntegers) { 265 EXPECT_TRUE(!APInt(8, 1).uge(256)); 266 EXPECT_TRUE(!APInt(8, 1).ugt(256)); 267 EXPECT_TRUE( APInt(8, 1).ule(256)); 268 EXPECT_TRUE( APInt(8, 1).ult(256)); 269 EXPECT_TRUE(!APInt(8, 1).sge(256)); 270 EXPECT_TRUE(!APInt(8, 1).sgt(256)); 271 EXPECT_TRUE( APInt(8, 1).sle(256)); 272 EXPECT_TRUE( APInt(8, 1).slt(256)); 273 EXPECT_TRUE(!(APInt(8, 0) == 256)); 274 EXPECT_TRUE( APInt(8, 0) != 256); 275 EXPECT_TRUE(!(APInt(8, 1) == 256)); 276 EXPECT_TRUE( APInt(8, 1) != 256); 277 278 auto uint64max = UINT64_MAX; 279 auto int64max = INT64_MAX; 280 auto int64min = INT64_MIN; 281 282 auto u64 = APInt{128, uint64max}; 283 auto s64 = APInt{128, static_cast<uint64_t>(int64max), true}; 284 auto big = u64 + 1; 285 286 EXPECT_TRUE( u64.uge(uint64max)); 287 EXPECT_TRUE(!u64.ugt(uint64max)); 288 EXPECT_TRUE( u64.ule(uint64max)); 289 EXPECT_TRUE(!u64.ult(uint64max)); 290 EXPECT_TRUE( u64.sge(int64max)); 291 EXPECT_TRUE( u64.sgt(int64max)); 292 EXPECT_TRUE(!u64.sle(int64max)); 293 EXPECT_TRUE(!u64.slt(int64max)); 294 EXPECT_TRUE( u64.sge(int64min)); 295 EXPECT_TRUE( u64.sgt(int64min)); 296 EXPECT_TRUE(!u64.sle(int64min)); 297 EXPECT_TRUE(!u64.slt(int64min)); 298 299 EXPECT_TRUE(u64 == uint64max); 300 EXPECT_TRUE(u64 != int64max); 301 EXPECT_TRUE(u64 != int64min); 302 303 EXPECT_TRUE(!s64.uge(uint64max)); 304 EXPECT_TRUE(!s64.ugt(uint64max)); 305 EXPECT_TRUE( s64.ule(uint64max)); 306 EXPECT_TRUE( s64.ult(uint64max)); 307 EXPECT_TRUE( s64.sge(int64max)); 308 EXPECT_TRUE(!s64.sgt(int64max)); 309 EXPECT_TRUE( s64.sle(int64max)); 310 EXPECT_TRUE(!s64.slt(int64max)); 311 EXPECT_TRUE( s64.sge(int64min)); 312 EXPECT_TRUE( s64.sgt(int64min)); 313 EXPECT_TRUE(!s64.sle(int64min)); 314 EXPECT_TRUE(!s64.slt(int64min)); 315 316 EXPECT_TRUE(s64 != uint64max); 317 EXPECT_TRUE(s64 == int64max); 318 EXPECT_TRUE(s64 != int64min); 319 320 EXPECT_TRUE( big.uge(uint64max)); 321 EXPECT_TRUE( big.ugt(uint64max)); 322 EXPECT_TRUE(!big.ule(uint64max)); 323 EXPECT_TRUE(!big.ult(uint64max)); 324 EXPECT_TRUE( big.sge(int64max)); 325 EXPECT_TRUE( big.sgt(int64max)); 326 EXPECT_TRUE(!big.sle(int64max)); 327 EXPECT_TRUE(!big.slt(int64max)); 328 EXPECT_TRUE( big.sge(int64min)); 329 EXPECT_TRUE( big.sgt(int64min)); 330 EXPECT_TRUE(!big.sle(int64min)); 331 EXPECT_TRUE(!big.slt(int64min)); 332 333 EXPECT_TRUE(big != uint64max); 334 EXPECT_TRUE(big != int64max); 335 EXPECT_TRUE(big != int64min); 336 } 337 338 TEST(APIntTest, compareWithInt64Min) { 339 int64_t edge = INT64_MIN; 340 int64_t edgeP1 = edge + 1; 341 int64_t edgeM1 = INT64_MAX; 342 auto a = APInt{64, static_cast<uint64_t>(edge), true}; 343 344 EXPECT_TRUE(!a.slt(edge)); 345 EXPECT_TRUE( a.sle(edge)); 346 EXPECT_TRUE(!a.sgt(edge)); 347 EXPECT_TRUE( a.sge(edge)); 348 EXPECT_TRUE( a.slt(edgeP1)); 349 EXPECT_TRUE( a.sle(edgeP1)); 350 EXPECT_TRUE(!a.sgt(edgeP1)); 351 EXPECT_TRUE(!a.sge(edgeP1)); 352 EXPECT_TRUE( a.slt(edgeM1)); 353 EXPECT_TRUE( a.sle(edgeM1)); 354 EXPECT_TRUE(!a.sgt(edgeM1)); 355 EXPECT_TRUE(!a.sge(edgeM1)); 356 } 357 358 TEST(APIntTest, compareWithHalfInt64Max) { 359 uint64_t edge = 0x4000000000000000; 360 uint64_t edgeP1 = edge + 1; 361 uint64_t edgeM1 = edge - 1; 362 auto a = APInt{64, edge}; 363 364 EXPECT_TRUE(!a.ult(edge)); 365 EXPECT_TRUE( a.ule(edge)); 366 EXPECT_TRUE(!a.ugt(edge)); 367 EXPECT_TRUE( a.uge(edge)); 368 EXPECT_TRUE( a.ult(edgeP1)); 369 EXPECT_TRUE( a.ule(edgeP1)); 370 EXPECT_TRUE(!a.ugt(edgeP1)); 371 EXPECT_TRUE(!a.uge(edgeP1)); 372 EXPECT_TRUE(!a.ult(edgeM1)); 373 EXPECT_TRUE(!a.ule(edgeM1)); 374 EXPECT_TRUE( a.ugt(edgeM1)); 375 EXPECT_TRUE( a.uge(edgeM1)); 376 377 EXPECT_TRUE(!a.slt(edge)); 378 EXPECT_TRUE( a.sle(edge)); 379 EXPECT_TRUE(!a.sgt(edge)); 380 EXPECT_TRUE( a.sge(edge)); 381 EXPECT_TRUE( a.slt(edgeP1)); 382 EXPECT_TRUE( a.sle(edgeP1)); 383 EXPECT_TRUE(!a.sgt(edgeP1)); 384 EXPECT_TRUE(!a.sge(edgeP1)); 385 EXPECT_TRUE(!a.slt(edgeM1)); 386 EXPECT_TRUE(!a.sle(edgeM1)); 387 EXPECT_TRUE( a.sgt(edgeM1)); 388 EXPECT_TRUE( a.sge(edgeM1)); 389 } 390 391 392 // Tests different div/rem varaints using scheme (a * b + c) / a 393 void testDiv(APInt a, APInt b, APInt c) { 394 ASSERT_TRUE(a.uge(b)); // Must: a >= b 395 ASSERT_TRUE(a.ugt(c)); // Must: a > c 396 397 auto p = a * b + c; 398 399 auto q = p.udiv(a); 400 auto r = p.urem(a); 401 EXPECT_EQ(b, q); 402 EXPECT_EQ(c, r); 403 APInt::udivrem(p, a, q, r); 404 EXPECT_EQ(b, q); 405 EXPECT_EQ(c, r); 406 q = p.sdiv(a); 407 r = p.srem(a); 408 EXPECT_EQ(b, q); 409 EXPECT_EQ(c, r); 410 APInt::sdivrem(p, a, q, r); 411 EXPECT_EQ(b, q); 412 EXPECT_EQ(c, r); 413 414 if (b.ugt(c)) { // Test also symmetric case 415 q = p.udiv(b); 416 r = p.urem(b); 417 EXPECT_EQ(a, q); 418 EXPECT_EQ(c, r); 419 APInt::udivrem(p, b, q, r); 420 EXPECT_EQ(a, q); 421 EXPECT_EQ(c, r); 422 q = p.sdiv(b); 423 r = p.srem(b); 424 EXPECT_EQ(a, q); 425 EXPECT_EQ(c, r); 426 APInt::sdivrem(p, b, q, r); 427 EXPECT_EQ(a, q); 428 EXPECT_EQ(c, r); 429 } 430 } 431 432 TEST(APIntTest, divrem_big1) { 433 // Tests KnuthDiv rare step D6 434 testDiv({256, "1ffffffffffffffff", 16}, 435 {256, "1ffffffffffffffff", 16}, 436 {256, 0}); 437 } 438 439 TEST(APIntTest, divrem_big2) { 440 // Tests KnuthDiv rare step D6 441 testDiv({1024, "112233ceff" 442 "cecece000000ffffffffffffffffffff" 443 "ffffffffffffffffffffffffffffffff" 444 "ffffffffffffffffffffffffffffffff" 445 "ffffffffffffffffffffffffffffff33", 16}, 446 {1024, "111111ffffffffffffffff" 447 "ffffffffffffffffffffffffffffffff" 448 "fffffffffffffffffffffffffffffccf" 449 "ffffffffffffffffffffffffffffff00", 16}, 450 {1024, 7919}); 451 } 452 453 TEST(APIntTest, divrem_big3) { 454 // Tests KnuthDiv case without shift 455 testDiv({256, "80000001ffffffffffffffff", 16}, 456 {256, "ffffffffffffff0000000", 16}, 457 {256, 4219}); 458 } 459 460 TEST(APIntTest, divrem_big4) { 461 // Tests heap allocation in divide() enfoced by huge numbers 462 testDiv(APInt{4096, 5}.shl(2001), 463 APInt{4096, 1}.shl(2000), 464 APInt{4096, 4219*13}); 465 } 466 467 TEST(APIntTest, divrem_big5) { 468 // Tests one word divisor case of divide() 469 testDiv(APInt{1024, 19}.shl(811), 470 APInt{1024, 4356013}, // one word 471 APInt{1024, 1}); 472 } 473 474 TEST(APIntTest, divrem_big6) { 475 // Tests some rare "borrow" cases in D4 step 476 testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16}, 477 APInt{512, "10000000000000001000000000000001", 16}, 478 APInt{512, "10000000000000000000000000000000", 16}); 479 } 480 481 TEST(APIntTest, divrem_big7) { 482 // Yet another test for KnuthDiv rare step D6. 483 testDiv({224, "800000008000000200000005", 16}, 484 {224, "fffffffd", 16}, 485 {224, "80000000800000010000000f", 16}); 486 } 487 488 TEST(APIntTest, fromString) { 489 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); 490 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); 491 EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); 492 EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); 493 EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); 494 495 EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); 496 EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); 497 EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); 498 EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); 499 EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); 500 501 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); 502 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); 503 EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); 504 EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); 505 EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); 506 507 508 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, +0), APInt(32, "+0", 8)); 516 EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); 517 EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); 518 EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); 519 EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); 520 EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); 521 522 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); 523 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); 524 EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); 525 EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); 526 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); 527 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); 528 529 530 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); 531 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); 532 EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); 533 EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); 534 EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); 535 EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); 536 537 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); 538 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); 539 EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); 540 EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); 541 EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); 542 EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); 543 544 545 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); 546 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); 547 EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); 548 EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); 549 EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); 550 EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); 551 552 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); 553 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); 554 EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); 555 EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); 556 EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); 557 EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); 558 559 EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); 560 EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); 561 EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); 562 EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); 563 EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); 564 EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); 565 566 EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); 567 EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); 568 EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); 569 EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); 570 EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); 571 EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); 572 } 573 574 TEST(APIntTest, FromArray) { 575 EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef<uint64_t>(1))); 576 } 577 578 TEST(APIntTest, StringBitsNeeded2) { 579 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); 580 EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); 581 EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); 582 EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); 583 EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); 584 585 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); 586 EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); 587 EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); 588 EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); 589 EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); 590 591 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); 592 EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); 593 EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); 594 EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); 595 EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); 596 } 597 598 TEST(APIntTest, StringBitsNeeded8) { 599 EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); 600 EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); 601 EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); 602 EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); 603 EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); 604 605 EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); 606 EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); 607 EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); 608 EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); 609 EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); 610 611 EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); 612 EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); 613 EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); 614 EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); 615 EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); 616 } 617 618 TEST(APIntTest, StringBitsNeeded10) { 619 EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); 620 EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); 621 EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); 622 EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); 623 EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); 624 EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); 625 626 EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); 627 EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); 628 EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); 629 EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); 630 EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); 631 632 EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); 633 EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); 634 EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); 635 EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); 636 EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); 637 } 638 639 TEST(APIntTest, StringBitsNeeded16) { 640 EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); 641 EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); 642 EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); 643 EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); 644 EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); 645 646 EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); 647 EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); 648 EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); 649 EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); 650 EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); 651 652 EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); 653 EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); 654 EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); 655 EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); 656 EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); 657 } 658 659 TEST(APIntTest, toString) { 660 SmallString<16> S; 661 bool isSigned; 662 663 APInt(8, 0).toString(S, 2, true, true); 664 EXPECT_EQ(S.str().str(), "0b0"); 665 S.clear(); 666 APInt(8, 0).toString(S, 8, true, true); 667 EXPECT_EQ(S.str().str(), "00"); 668 S.clear(); 669 APInt(8, 0).toString(S, 10, true, true); 670 EXPECT_EQ(S.str().str(), "0"); 671 S.clear(); 672 APInt(8, 0).toString(S, 16, true, true); 673 EXPECT_EQ(S.str().str(), "0x0"); 674 S.clear(); 675 APInt(8, 0).toString(S, 36, true, false); 676 EXPECT_EQ(S.str().str(), "0"); 677 S.clear(); 678 679 isSigned = false; 680 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 681 EXPECT_EQ(S.str().str(), "0b11111111"); 682 S.clear(); 683 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 684 EXPECT_EQ(S.str().str(), "0377"); 685 S.clear(); 686 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 687 EXPECT_EQ(S.str().str(), "255"); 688 S.clear(); 689 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 690 EXPECT_EQ(S.str().str(), "0xFF"); 691 S.clear(); 692 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 693 EXPECT_EQ(S.str().str(), "73"); 694 S.clear(); 695 696 isSigned = true; 697 APInt(8, 255, isSigned).toString(S, 2, isSigned, true); 698 EXPECT_EQ(S.str().str(), "-0b1"); 699 S.clear(); 700 APInt(8, 255, isSigned).toString(S, 8, isSigned, true); 701 EXPECT_EQ(S.str().str(), "-01"); 702 S.clear(); 703 APInt(8, 255, isSigned).toString(S, 10, isSigned, true); 704 EXPECT_EQ(S.str().str(), "-1"); 705 S.clear(); 706 APInt(8, 255, isSigned).toString(S, 16, isSigned, true); 707 EXPECT_EQ(S.str().str(), "-0x1"); 708 S.clear(); 709 APInt(8, 255, isSigned).toString(S, 36, isSigned, false); 710 EXPECT_EQ(S.str().str(), "-1"); 711 S.clear(); 712 } 713 714 TEST(APIntTest, Log2) { 715 EXPECT_EQ(APInt(15, 7).logBase2(), 2U); 716 EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); 717 EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); 718 EXPECT_EQ(APInt(15, 8).logBase2(), 3U); 719 EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); 720 EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); 721 EXPECT_EQ(APInt(15, 9).logBase2(), 3U); 722 EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); 723 EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); 724 } 725 726 TEST(APIntTest, magic) { 727 EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); 728 EXPECT_EQ(APInt(32, 3).magic().s, 0U); 729 EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); 730 EXPECT_EQ(APInt(32, 5).magic().s, 1U); 731 EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); 732 EXPECT_EQ(APInt(32, 7).magic().s, 2U); 733 } 734 735 TEST(APIntTest, magicu) { 736 EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); 737 EXPECT_EQ(APInt(32, 3).magicu().s, 1U); 738 EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); 739 EXPECT_EQ(APInt(32, 5).magicu().s, 2U); 740 EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); 741 EXPECT_EQ(APInt(32, 7).magicu().s, 3U); 742 EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); 743 EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); 744 } 745 746 #ifdef GTEST_HAS_DEATH_TEST 747 #ifndef NDEBUG 748 TEST(APIntTest, StringDeath) { 749 EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); 750 EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); 751 EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, 16, or 36!"); 752 EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); 753 EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); 754 EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); 755 EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); 756 EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); 757 EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); 758 } 759 #endif 760 #endif 761 762 TEST(APIntTest, mul_clear) { 763 APInt ValA(65, -1ULL); 764 APInt ValB(65, 4); 765 APInt ValC(65, 0); 766 ValC = ValA * ValB; 767 ValA *= ValB; 768 EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); 769 } 770 771 TEST(APIntTest, Rotate) { 772 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); 773 EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); 774 EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); 775 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); 776 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); 777 778 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); 779 EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); 780 EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); 781 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); 782 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); 783 784 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); 785 EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); 786 EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); 787 EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); 788 EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); 789 790 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); 791 EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); 792 EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); 793 EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); 794 EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); 795 796 APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16); 797 APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16); 798 EXPECT_EQ(Rot, Big.rotr(144)); 799 } 800 801 TEST(APIntTest, Splat) { 802 APInt ValA(8, 0x01); 803 EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); 804 EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); 805 806 APInt ValB(3, 5); 807 EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); 808 EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); 809 } 810 811 TEST(APIntTest, tcDecrement) { 812 // Test single word decrement. 813 814 // No out borrow. 815 { 816 integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); 817 integerPart carry = APInt::tcDecrement(&singleWord, 1); 818 EXPECT_EQ(carry, integerPart(0)); 819 EXPECT_EQ(singleWord, ~integerPart(0) >> 1); 820 } 821 822 // With out borrow. 823 { 824 integerPart singleWord = 0; 825 integerPart carry = APInt::tcDecrement(&singleWord, 1); 826 EXPECT_EQ(carry, integerPart(1)); 827 EXPECT_EQ(singleWord, ~integerPart(0)); 828 } 829 830 // Test multiword decrement. 831 832 // No across word borrow, no out borrow. 833 { 834 integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; 835 integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; 836 APInt::tcDecrement(test, 4); 837 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 838 } 839 840 // 1 across word borrow, no out borrow. 841 { 842 integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; 843 integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; 844 integerPart carry = APInt::tcDecrement(test, 4); 845 EXPECT_EQ(carry, integerPart(0)); 846 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 847 } 848 849 // 2 across word borrow, no out borrow. 850 { 851 integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; 852 integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; 853 integerPart carry = APInt::tcDecrement(test, 4); 854 EXPECT_EQ(carry, integerPart(0)); 855 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 856 } 857 858 // 3 across word borrow, no out borrow. 859 { 860 integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; 861 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; 862 integerPart carry = APInt::tcDecrement(test, 4); 863 EXPECT_EQ(carry, integerPart(0)); 864 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 865 } 866 867 // 3 across word borrow, with out borrow. 868 { 869 integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; 870 integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; 871 integerPart carry = APInt::tcDecrement(test, 4); 872 EXPECT_EQ(carry, integerPart(1)); 873 EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); 874 } 875 } 876 877 TEST(APIntTest, arrayAccess) { 878 // Single word check. 879 uint64_t E1 = 0x2CA7F46BF6569915ULL; 880 APInt A1(64, E1); 881 for (unsigned i = 0, e = 64; i < e; ++i) { 882 EXPECT_EQ(bool(E1 & (1ULL << i)), 883 A1[i]); 884 } 885 886 // Multiword check. 887 integerPart E2[4] = { 888 0xEB6EB136591CBA21ULL, 889 0x7B9358BD6A33F10AULL, 890 0x7E7FFA5EADD8846ULL, 891 0x305F341CA00B613DULL 892 }; 893 APInt A2(integerPartWidth*4, E2); 894 for (unsigned i = 0; i < 4; ++i) { 895 for (unsigned j = 0; j < integerPartWidth; ++j) { 896 EXPECT_EQ(bool(E2[i] & (1ULL << j)), 897 A2[i*integerPartWidth + j]); 898 } 899 } 900 } 901 902 TEST(APIntTest, LargeAPIntConstruction) { 903 // Check that we can properly construct very large APInt. It is very 904 // unlikely that people will ever do this, but it is a legal input, 905 // so we should not crash on it. 906 APInt A9(UINT32_MAX, 0); 907 EXPECT_FALSE(A9.getBoolValue()); 908 } 909 910 TEST(APIntTest, nearestLogBase2) { 911 // Single word check. 912 913 // Test round up. 914 uint64_t I1 = 0x1800001; 915 APInt A1(64, I1); 916 EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); 917 918 // Test round down. 919 uint64_t I2 = 0x1000011; 920 APInt A2(64, I2); 921 EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); 922 923 // Test ties round up. 924 uint64_t I3 = 0x1800000; 925 APInt A3(64, I3); 926 EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); 927 928 // Multiple word check. 929 930 // Test round up. 931 integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; 932 APInt A4(integerPartWidth*4, I4); 933 EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); 934 935 // Test round down. 936 integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; 937 APInt A5(integerPartWidth*4, I5); 938 EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); 939 940 // Test ties round up. 941 uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; 942 APInt A6(integerPartWidth*4, I6); 943 EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); 944 945 // Test BitWidth == 1 special cases. 946 APInt A7(1, 1); 947 EXPECT_EQ(A7.nearestLogBase2(), 0ULL); 948 APInt A8(1, 0); 949 EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); 950 951 // Test the zero case when we have a bit width large enough such 952 // that the bit width is larger than UINT32_MAX-1. 953 APInt A9(UINT32_MAX, 0); 954 EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); 955 } 956 957 TEST(APIntTest, IsSplat) { 958 APInt A(32, 0x01010101); 959 EXPECT_FALSE(A.isSplat(1)); 960 EXPECT_FALSE(A.isSplat(2)); 961 EXPECT_FALSE(A.isSplat(4)); 962 EXPECT_TRUE(A.isSplat(8)); 963 EXPECT_TRUE(A.isSplat(16)); 964 EXPECT_TRUE(A.isSplat(32)); 965 966 APInt B(24, 0xAAAAAA); 967 EXPECT_FALSE(B.isSplat(1)); 968 EXPECT_TRUE(B.isSplat(2)); 969 EXPECT_TRUE(B.isSplat(4)); 970 EXPECT_TRUE(B.isSplat(8)); 971 EXPECT_TRUE(B.isSplat(24)); 972 973 APInt C(24, 0xABAAAB); 974 EXPECT_FALSE(C.isSplat(1)); 975 EXPECT_FALSE(C.isSplat(2)); 976 EXPECT_FALSE(C.isSplat(4)); 977 EXPECT_FALSE(C.isSplat(8)); 978 EXPECT_TRUE(C.isSplat(24)); 979 980 APInt D(32, 0xABBAABBA); 981 EXPECT_FALSE(D.isSplat(1)); 982 EXPECT_FALSE(D.isSplat(2)); 983 EXPECT_FALSE(D.isSplat(4)); 984 EXPECT_FALSE(D.isSplat(8)); 985 EXPECT_TRUE(D.isSplat(16)); 986 EXPECT_TRUE(D.isSplat(32)); 987 988 APInt E(32, 0); 989 EXPECT_TRUE(E.isSplat(1)); 990 EXPECT_TRUE(E.isSplat(2)); 991 EXPECT_TRUE(E.isSplat(4)); 992 EXPECT_TRUE(E.isSplat(8)); 993 EXPECT_TRUE(E.isSplat(16)); 994 EXPECT_TRUE(E.isSplat(32)); 995 } 996 997 #if defined(__clang__) 998 // Disable the pragma warning from versions of Clang without -Wself-move 999 #pragma clang diagnostic push 1000 #pragma clang diagnostic ignored "-Wunknown-pragmas" 1001 // Disable the warning that triggers on exactly what is being tested. 1002 #pragma clang diagnostic push 1003 #pragma clang diagnostic ignored "-Wself-move" 1004 #endif 1005 TEST(APIntTest, SelfMoveAssignment) { 1006 APInt X(32, 0xdeadbeef); 1007 X = std::move(X); 1008 EXPECT_EQ(32u, X.getBitWidth()); 1009 EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); 1010 1011 uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; 1012 APInt Y(128, Bits); 1013 Y = std::move(Y); 1014 EXPECT_EQ(128u, Y.getBitWidth()); 1015 EXPECT_EQ(~0ULL, Y.getLimitedValue()); 1016 const uint64_t *Raw = Y.getRawData(); 1017 EXPECT_EQ(2u, Y.getNumWords()); 1018 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); 1019 EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); 1020 } 1021 #if defined(__clang__) 1022 #pragma clang diagnostic pop 1023 #pragma clang diagnostic pop 1024 #endif 1025 } 1026
