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