1 //===- llvm/unittest/Support/ConstantRangeTest.cpp - ConstantRange 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/Support/ConstantRange.h" 11 #include "llvm/Instructions.h" 12 13 #include "gtest/gtest.h" 14 15 using namespace llvm; 16 17 namespace { 18 19 class ConstantRangeTest : public ::testing::Test { 20 protected: 21 static ConstantRange Full; 22 static ConstantRange Empty; 23 static ConstantRange One; 24 static ConstantRange Some; 25 static ConstantRange Wrap; 26 }; 27 28 ConstantRange ConstantRangeTest::Full(16); 29 ConstantRange ConstantRangeTest::Empty(16, false); 30 ConstantRange ConstantRangeTest::One(APInt(16, 0xa)); 31 ConstantRange ConstantRangeTest::Some(APInt(16, 0xa), APInt(16, 0xaaa)); 32 ConstantRange ConstantRangeTest::Wrap(APInt(16, 0xaaa), APInt(16, 0xa)); 33 34 TEST_F(ConstantRangeTest, Basics) { 35 EXPECT_TRUE(Full.isFullSet()); 36 EXPECT_FALSE(Full.isEmptySet()); 37 EXPECT_TRUE(Full.inverse().isEmptySet()); 38 EXPECT_FALSE(Full.isWrappedSet()); 39 EXPECT_TRUE(Full.contains(APInt(16, 0x0))); 40 EXPECT_TRUE(Full.contains(APInt(16, 0x9))); 41 EXPECT_TRUE(Full.contains(APInt(16, 0xa))); 42 EXPECT_TRUE(Full.contains(APInt(16, 0xaa9))); 43 EXPECT_TRUE(Full.contains(APInt(16, 0xaaa))); 44 45 EXPECT_FALSE(Empty.isFullSet()); 46 EXPECT_TRUE(Empty.isEmptySet()); 47 EXPECT_TRUE(Empty.inverse().isFullSet()); 48 EXPECT_FALSE(Empty.isWrappedSet()); 49 EXPECT_FALSE(Empty.contains(APInt(16, 0x0))); 50 EXPECT_FALSE(Empty.contains(APInt(16, 0x9))); 51 EXPECT_FALSE(Empty.contains(APInt(16, 0xa))); 52 EXPECT_FALSE(Empty.contains(APInt(16, 0xaa9))); 53 EXPECT_FALSE(Empty.contains(APInt(16, 0xaaa))); 54 55 EXPECT_FALSE(One.isFullSet()); 56 EXPECT_FALSE(One.isEmptySet()); 57 EXPECT_FALSE(One.isWrappedSet()); 58 EXPECT_FALSE(One.contains(APInt(16, 0x0))); 59 EXPECT_FALSE(One.contains(APInt(16, 0x9))); 60 EXPECT_TRUE(One.contains(APInt(16, 0xa))); 61 EXPECT_FALSE(One.contains(APInt(16, 0xaa9))); 62 EXPECT_FALSE(One.contains(APInt(16, 0xaaa))); 63 EXPECT_FALSE(One.inverse().contains(APInt(16, 0xa))); 64 65 EXPECT_FALSE(Some.isFullSet()); 66 EXPECT_FALSE(Some.isEmptySet()); 67 EXPECT_FALSE(Some.isWrappedSet()); 68 EXPECT_FALSE(Some.contains(APInt(16, 0x0))); 69 EXPECT_FALSE(Some.contains(APInt(16, 0x9))); 70 EXPECT_TRUE(Some.contains(APInt(16, 0xa))); 71 EXPECT_TRUE(Some.contains(APInt(16, 0xaa9))); 72 EXPECT_FALSE(Some.contains(APInt(16, 0xaaa))); 73 74 EXPECT_FALSE(Wrap.isFullSet()); 75 EXPECT_FALSE(Wrap.isEmptySet()); 76 EXPECT_TRUE(Wrap.isWrappedSet()); 77 EXPECT_TRUE(Wrap.contains(APInt(16, 0x0))); 78 EXPECT_TRUE(Wrap.contains(APInt(16, 0x9))); 79 EXPECT_FALSE(Wrap.contains(APInt(16, 0xa))); 80 EXPECT_FALSE(Wrap.contains(APInt(16, 0xaa9))); 81 EXPECT_TRUE(Wrap.contains(APInt(16, 0xaaa))); 82 } 83 84 TEST_F(ConstantRangeTest, Equality) { 85 EXPECT_EQ(Full, Full); 86 EXPECT_EQ(Empty, Empty); 87 EXPECT_EQ(One, One); 88 EXPECT_EQ(Some, Some); 89 EXPECT_EQ(Wrap, Wrap); 90 EXPECT_NE(Full, Empty); 91 EXPECT_NE(Full, One); 92 EXPECT_NE(Full, Some); 93 EXPECT_NE(Full, Wrap); 94 EXPECT_NE(Empty, One); 95 EXPECT_NE(Empty, Some); 96 EXPECT_NE(Empty, Wrap); 97 EXPECT_NE(One, Some); 98 EXPECT_NE(One, Wrap); 99 EXPECT_NE(Some, Wrap); 100 } 101 102 TEST_F(ConstantRangeTest, SingleElement) { 103 EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(NULL)); 104 EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(NULL)); 105 EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa)); 106 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(NULL)); 107 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(NULL)); 108 109 EXPECT_FALSE(Full.isSingleElement()); 110 EXPECT_FALSE(Empty.isSingleElement()); 111 EXPECT_TRUE(One.isSingleElement()); 112 EXPECT_FALSE(Some.isSingleElement()); 113 EXPECT_FALSE(Wrap.isSingleElement()); 114 } 115 116 TEST_F(ConstantRangeTest, GetSetSize) { 117 EXPECT_EQ(Full.getSetSize(), APInt(17, 65536)); 118 EXPECT_EQ(Empty.getSetSize(), APInt(17, 0)); 119 EXPECT_EQ(One.getSetSize(), APInt(17, 1)); 120 EXPECT_EQ(Some.getSetSize(), APInt(17, 0xaa0)); 121 122 ConstantRange Wrap(APInt(4, 7), APInt(4, 3)); 123 ConstantRange Wrap2(APInt(4, 8), APInt(4, 7)); 124 EXPECT_EQ(Wrap.getSetSize(), APInt(5, 12)); 125 EXPECT_EQ(Wrap2.getSetSize(), APInt(5, 15)); 126 } 127 128 TEST_F(ConstantRangeTest, GetMinsAndMaxes) { 129 EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX)); 130 EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa)); 131 EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9)); 132 EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX)); 133 134 EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0)); 135 EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa)); 136 EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa)); 137 EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0)); 138 139 EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX)); 140 EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa)); 141 EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9)); 142 EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX)); 143 144 EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN)); 145 EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa)); 146 EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa)); 147 EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN)); 148 149 // Found by Klee 150 EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(), 151 APInt(4, 7)); 152 } 153 154 TEST_F(ConstantRangeTest, SignWrapped) { 155 EXPECT_TRUE(Full.isSignWrappedSet()); 156 EXPECT_FALSE(Empty.isSignWrappedSet()); 157 EXPECT_FALSE(One.isSignWrappedSet()); 158 EXPECT_FALSE(Some.isSignWrappedSet()); 159 EXPECT_TRUE(Wrap.isSignWrappedSet()); 160 161 EXPECT_FALSE(ConstantRange(APInt(8, 127), APInt(8, 128)).isSignWrappedSet()); 162 EXPECT_TRUE(ConstantRange(APInt(8, 127), APInt(8, 129)).isSignWrappedSet()); 163 EXPECT_FALSE(ConstantRange(APInt(8, 128), APInt(8, 129)).isSignWrappedSet()); 164 EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 9)).isSignWrappedSet()); 165 EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 250)).isSignWrappedSet()); 166 EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 10)).isSignWrappedSet()); 167 EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 251)).isSignWrappedSet()); 168 } 169 170 TEST_F(ConstantRangeTest, Trunc) { 171 ConstantRange TFull = Full.truncate(10); 172 ConstantRange TEmpty = Empty.truncate(10); 173 ConstantRange TOne = One.truncate(10); 174 ConstantRange TSome = Some.truncate(10); 175 ConstantRange TWrap = Wrap.truncate(10); 176 EXPECT_TRUE(TFull.isFullSet()); 177 EXPECT_TRUE(TEmpty.isEmptySet()); 178 EXPECT_EQ(TOne, ConstantRange(One.getLower().trunc(10), 179 One.getUpper().trunc(10))); 180 EXPECT_TRUE(TSome.isFullSet()); 181 } 182 183 TEST_F(ConstantRangeTest, ZExt) { 184 ConstantRange ZFull = Full.zeroExtend(20); 185 ConstantRange ZEmpty = Empty.zeroExtend(20); 186 ConstantRange ZOne = One.zeroExtend(20); 187 ConstantRange ZSome = Some.zeroExtend(20); 188 ConstantRange ZWrap = Wrap.zeroExtend(20); 189 EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); 190 EXPECT_TRUE(ZEmpty.isEmptySet()); 191 EXPECT_EQ(ZOne, ConstantRange(One.getLower().zext(20), 192 One.getUpper().zext(20))); 193 EXPECT_EQ(ZSome, ConstantRange(Some.getLower().zext(20), 194 Some.getUpper().zext(20))); 195 EXPECT_EQ(ZWrap, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); 196 197 // zext([5, 0), 3->7) = [5, 8) 198 ConstantRange FiveZero(APInt(3, 5), APInt(3, 0)); 199 EXPECT_EQ(FiveZero.zeroExtend(7), ConstantRange(APInt(7, 5), APInt(7, 8))); 200 } 201 202 TEST_F(ConstantRangeTest, SExt) { 203 ConstantRange SFull = Full.signExtend(20); 204 ConstantRange SEmpty = Empty.signExtend(20); 205 ConstantRange SOne = One.signExtend(20); 206 ConstantRange SSome = Some.signExtend(20); 207 ConstantRange SWrap = Wrap.signExtend(20); 208 EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), 209 APInt(20, INT16_MAX + 1, true))); 210 EXPECT_TRUE(SEmpty.isEmptySet()); 211 EXPECT_EQ(SOne, ConstantRange(One.getLower().sext(20), 212 One.getUpper().sext(20))); 213 EXPECT_EQ(SSome, ConstantRange(Some.getLower().sext(20), 214 Some.getUpper().sext(20))); 215 EXPECT_EQ(SWrap, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), 216 APInt(20, INT16_MAX + 1, true))); 217 218 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16), 219 ConstantRange(APInt(16, -128), APInt(16, 128))); 220 } 221 222 TEST_F(ConstantRangeTest, IntersectWith) { 223 EXPECT_EQ(Empty.intersectWith(Full), Empty); 224 EXPECT_EQ(Empty.intersectWith(Empty), Empty); 225 EXPECT_EQ(Empty.intersectWith(One), Empty); 226 EXPECT_EQ(Empty.intersectWith(Some), Empty); 227 EXPECT_EQ(Empty.intersectWith(Wrap), Empty); 228 EXPECT_EQ(Full.intersectWith(Full), Full); 229 EXPECT_EQ(Some.intersectWith(Some), Some); 230 EXPECT_EQ(Some.intersectWith(One), One); 231 EXPECT_EQ(Full.intersectWith(One), One); 232 EXPECT_EQ(Full.intersectWith(Some), Some); 233 EXPECT_EQ(Some.intersectWith(Wrap), Empty); 234 EXPECT_EQ(One.intersectWith(Wrap), Empty); 235 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One)); 236 237 // Klee generated testcase from PR4545. 238 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like 239 // 01..4.6789ABCDEF where the dots represent values not in the intersection. 240 ConstantRange LHS(APInt(16, 4), APInt(16, 2)); 241 ConstantRange RHS(APInt(16, 6), APInt(16, 5)); 242 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS); 243 244 // previous bug: intersection of [min, 3) and [2, max) should be 2 245 LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3)); 246 RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646)); 247 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2))); 248 249 // [2, 0) /\ [4, 3) = [2, 0) 250 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 251 RHS = ConstantRange(APInt(32, 4), APInt(32, 3)); 252 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0))); 253 254 // [2, 0) /\ [4, 2) = [4, 0) 255 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 256 RHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 257 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0))); 258 259 // [4, 2) /\ [5, 1) = [5, 1) 260 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 261 RHS = ConstantRange(APInt(32, 5), APInt(32, 1)); 262 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1))); 263 264 // [2, 0) /\ [7, 4) = [7, 4) 265 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 266 RHS = ConstantRange(APInt(32, 7), APInt(32, 4)); 267 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4))); 268 269 // [4, 2) /\ [1, 0) = [1, 0) 270 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 271 RHS = ConstantRange(APInt(32, 1), APInt(32, 0)); 272 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2))); 273 274 // [15, 0) /\ [7, 6) = [15, 0) 275 LHS = ConstantRange(APInt(32, 15), APInt(32, 0)); 276 RHS = ConstantRange(APInt(32, 7), APInt(32, 6)); 277 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0))); 278 } 279 280 TEST_F(ConstantRangeTest, UnionWith) { 281 EXPECT_EQ(Wrap.unionWith(One), 282 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb))); 283 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One)); 284 EXPECT_EQ(Empty.unionWith(Empty), Empty); 285 EXPECT_EQ(Full.unionWith(Full), Full); 286 EXPECT_EQ(Some.unionWith(Wrap), Full); 287 288 // PR4545 289 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith( 290 ConstantRange(APInt(16, 0), APInt(16, 8))), 291 ConstantRange(APInt(16, 14), APInt(16, 8))); 292 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith( 293 ConstantRange(APInt(16, 4), APInt(16, 0))), 294 ConstantRange(16)); 295 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith( 296 ConstantRange(APInt(16, 2), APInt(16, 1))), 297 ConstantRange(16)); 298 } 299 300 TEST_F(ConstantRangeTest, SetDifference) { 301 EXPECT_EQ(Full.difference(Empty), Full); 302 EXPECT_EQ(Full.difference(Full), Empty); 303 EXPECT_EQ(Empty.difference(Empty), Empty); 304 EXPECT_EQ(Empty.difference(Full), Empty); 305 306 ConstantRange A(APInt(16, 3), APInt(16, 7)); 307 ConstantRange B(APInt(16, 5), APInt(16, 9)); 308 ConstantRange C(APInt(16, 3), APInt(16, 5)); 309 ConstantRange D(APInt(16, 7), APInt(16, 9)); 310 ConstantRange E(APInt(16, 5), APInt(16, 4)); 311 ConstantRange F(APInt(16, 7), APInt(16, 3)); 312 EXPECT_EQ(A.difference(B), C); 313 EXPECT_EQ(B.difference(A), D); 314 EXPECT_EQ(E.difference(A), F); 315 } 316 317 TEST_F(ConstantRangeTest, SubtractAPInt) { 318 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full); 319 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty); 320 EXPECT_EQ(Some.subtract(APInt(16, 4)), 321 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 322 EXPECT_EQ(Wrap.subtract(APInt(16, 4)), 323 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 324 EXPECT_EQ(One.subtract(APInt(16, 4)), 325 ConstantRange(APInt(16, 0x6))); 326 } 327 328 TEST_F(ConstantRangeTest, Add) { 329 EXPECT_EQ(Full.add(APInt(16, 4)), Full); 330 EXPECT_EQ(Full.add(Full), Full); 331 EXPECT_EQ(Full.add(Empty), Empty); 332 EXPECT_EQ(Full.add(One), Full); 333 EXPECT_EQ(Full.add(Some), Full); 334 EXPECT_EQ(Full.add(Wrap), Full); 335 EXPECT_EQ(Empty.add(Empty), Empty); 336 EXPECT_EQ(Empty.add(One), Empty); 337 EXPECT_EQ(Empty.add(Some), Empty); 338 EXPECT_EQ(Empty.add(Wrap), Empty); 339 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty); 340 EXPECT_EQ(Some.add(APInt(16, 4)), 341 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae))); 342 EXPECT_EQ(Wrap.add(APInt(16, 4)), 343 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe))); 344 EXPECT_EQ(One.add(APInt(16, 4)), 345 ConstantRange(APInt(16, 0xe))); 346 } 347 348 TEST_F(ConstantRangeTest, Sub) { 349 EXPECT_EQ(Full.sub(APInt(16, 4)), Full); 350 EXPECT_EQ(Full.sub(Full), Full); 351 EXPECT_EQ(Full.sub(Empty), Empty); 352 EXPECT_EQ(Full.sub(One), Full); 353 EXPECT_EQ(Full.sub(Some), Full); 354 EXPECT_EQ(Full.sub(Wrap), Full); 355 EXPECT_EQ(Empty.sub(Empty), Empty); 356 EXPECT_EQ(Empty.sub(One), Empty); 357 EXPECT_EQ(Empty.sub(Some), Empty); 358 EXPECT_EQ(Empty.sub(Wrap), Empty); 359 EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty); 360 EXPECT_EQ(Some.sub(APInt(16, 4)), 361 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 362 EXPECT_EQ(Some.sub(Some), 363 ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0))); 364 EXPECT_EQ(Wrap.sub(APInt(16, 4)), 365 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 366 EXPECT_EQ(One.sub(APInt(16, 4)), 367 ConstantRange(APInt(16, 0x6))); 368 } 369 370 TEST_F(ConstantRangeTest, Multiply) { 371 EXPECT_EQ(Full.multiply(Full), Full); 372 EXPECT_EQ(Full.multiply(Empty), Empty); 373 EXPECT_EQ(Full.multiply(One), Full); 374 EXPECT_EQ(Full.multiply(Some), Full); 375 EXPECT_EQ(Full.multiply(Wrap), Full); 376 EXPECT_EQ(Empty.multiply(Empty), Empty); 377 EXPECT_EQ(Empty.multiply(One), Empty); 378 EXPECT_EQ(Empty.multiply(Some), Empty); 379 EXPECT_EQ(Empty.multiply(Wrap), Empty); 380 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa), 381 APInt(16, 0xa*0xa + 1))); 382 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa), 383 APInt(16, 0xa*0xaa9 + 1))); 384 EXPECT_EQ(One.multiply(Wrap), Full); 385 EXPECT_EQ(Some.multiply(Some), Full); 386 EXPECT_EQ(Some.multiply(Wrap), Full); 387 EXPECT_EQ(Wrap.multiply(Wrap), Full); 388 389 ConstantRange Zero(APInt(16, 0)); 390 EXPECT_EQ(Zero.multiply(Full), Zero); 391 EXPECT_EQ(Zero.multiply(Some), Zero); 392 EXPECT_EQ(Zero.multiply(Wrap), Zero); 393 EXPECT_EQ(Full.multiply(Zero), Zero); 394 EXPECT_EQ(Some.multiply(Zero), Zero); 395 EXPECT_EQ(Wrap.multiply(Zero), Zero); 396 397 // http://llvm.org/PR4545 398 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply( 399 ConstantRange(APInt(4, 6), APInt(4, 2))), 400 ConstantRange(4, /*isFullSet=*/true)); 401 } 402 403 TEST_F(ConstantRangeTest, UMax) { 404 EXPECT_EQ(Full.umax(Full), Full); 405 EXPECT_EQ(Full.umax(Empty), Empty); 406 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 407 EXPECT_EQ(Full.umax(Wrap), Full); 408 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 409 EXPECT_EQ(Empty.umax(Empty), Empty); 410 EXPECT_EQ(Empty.umax(Some), Empty); 411 EXPECT_EQ(Empty.umax(Wrap), Empty); 412 EXPECT_EQ(Empty.umax(One), Empty); 413 EXPECT_EQ(Some.umax(Some), Some); 414 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 415 EXPECT_EQ(Some.umax(One), Some); 416 // TODO: ConstantRange is currently over-conservative here. 417 EXPECT_EQ(Wrap.umax(Wrap), Full); 418 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 419 EXPECT_EQ(One.umax(One), One); 420 } 421 422 TEST_F(ConstantRangeTest, SMax) { 423 EXPECT_EQ(Full.smax(Full), Full); 424 EXPECT_EQ(Full.smax(Empty), Empty); 425 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa), 426 APInt::getSignedMinValue(16))); 427 EXPECT_EQ(Full.smax(Wrap), Full); 428 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa), 429 APInt::getSignedMinValue(16))); 430 EXPECT_EQ(Empty.smax(Empty), Empty); 431 EXPECT_EQ(Empty.smax(Some), Empty); 432 EXPECT_EQ(Empty.smax(Wrap), Empty); 433 EXPECT_EQ(Empty.smax(One), Empty); 434 EXPECT_EQ(Some.smax(Some), Some); 435 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa), 436 APInt(16, (uint64_t)INT16_MIN))); 437 EXPECT_EQ(Some.smax(One), Some); 438 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa), 439 APInt(16, (uint64_t)INT16_MIN))); 440 EXPECT_EQ(One.smax(One), One); 441 } 442 443 TEST_F(ConstantRangeTest, UDiv) { 444 EXPECT_EQ(Full.udiv(Full), Full); 445 EXPECT_EQ(Full.udiv(Empty), Empty); 446 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0), 447 APInt(16, 0xffff / 0xa + 1))); 448 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0), 449 APInt(16, 0xffff / 0xa + 1))); 450 EXPECT_EQ(Full.udiv(Wrap), Full); 451 EXPECT_EQ(Empty.udiv(Empty), Empty); 452 EXPECT_EQ(Empty.udiv(One), Empty); 453 EXPECT_EQ(Empty.udiv(Some), Empty); 454 EXPECT_EQ(Empty.udiv(Wrap), Empty); 455 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1))); 456 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2))); 457 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 458 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111))); 459 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 460 EXPECT_EQ(Wrap.udiv(Wrap), Full); 461 } 462 463 TEST_F(ConstantRangeTest, Shl) { 464 EXPECT_EQ(Full.shl(Full), Full); 465 EXPECT_EQ(Full.shl(Empty), Empty); 466 EXPECT_EQ(Full.shl(One), Full); // TODO: [0, (-1 << 0xa) + 1) 467 EXPECT_EQ(Full.shl(Some), Full); // TODO: [0, (-1 << 0xa) + 1) 468 EXPECT_EQ(Full.shl(Wrap), Full); 469 EXPECT_EQ(Empty.shl(Empty), Empty); 470 EXPECT_EQ(Empty.shl(One), Empty); 471 EXPECT_EQ(Empty.shl(Some), Empty); 472 EXPECT_EQ(Empty.shl(Wrap), Empty); 473 EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa), 474 APInt(16, (0xa << 0xa) + 1))); 475 EXPECT_EQ(One.shl(Some), Full); // TODO: [0xa << 0xa, 0) 476 EXPECT_EQ(One.shl(Wrap), Full); // TODO: [0xa, 0xa << 14 + 1) 477 EXPECT_EQ(Some.shl(Some), Full); // TODO: [0xa << 0xa, 0xfc01) 478 EXPECT_EQ(Some.shl(Wrap), Full); // TODO: [0xa, 0x7ff << 0x5 + 1) 479 EXPECT_EQ(Wrap.shl(Wrap), Full); 480 } 481 482 TEST_F(ConstantRangeTest, Lshr) { 483 EXPECT_EQ(Full.lshr(Full), Full); 484 EXPECT_EQ(Full.lshr(Empty), Empty); 485 EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0), 486 APInt(16, (0xffff >> 0xa) + 1))); 487 EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0), 488 APInt(16, (0xffff >> 0xa) + 1))); 489 EXPECT_EQ(Full.lshr(Wrap), Full); 490 EXPECT_EQ(Empty.lshr(Empty), Empty); 491 EXPECT_EQ(Empty.lshr(One), Empty); 492 EXPECT_EQ(Empty.lshr(Some), Empty); 493 EXPECT_EQ(Empty.lshr(Wrap), Empty); 494 EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0))); 495 EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0))); 496 EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 497 EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0), 498 APInt(16, (0xaaa >> 0xa) + 1))); 499 EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 500 EXPECT_EQ(Wrap.lshr(Wrap), Full); 501 } 502 503 TEST(ConstantRange, MakeICmpRegion) { 504 // PR8250 505 ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32)); 506 EXPECT_TRUE(ConstantRange::makeICmpRegion(ICmpInst::ICMP_SGT, 507 SMax).isEmptySet()); 508 } 509 510 } // anonymous namespace 511
