1 //===- 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/IR/ConstantRange.h" 11 #include "llvm/IR/Instructions.h" 12 #include "llvm/IR/Operator.h" 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 *>(nullptr)); 104 EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(nullptr)); 105 EXPECT_EQ(Full.getSingleMissingElement(), static_cast<APInt *>(nullptr)); 106 EXPECT_EQ(Empty.getSingleMissingElement(), static_cast<APInt *>(nullptr)); 107 108 EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa)); 109 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(nullptr)); 110 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(nullptr)); 111 112 EXPECT_EQ(One.getSingleMissingElement(), static_cast<APInt *>(nullptr)); 113 EXPECT_EQ(Some.getSingleMissingElement(), static_cast<APInt *>(nullptr)); 114 115 ConstantRange OneInverse = One.inverse(); 116 EXPECT_EQ(*OneInverse.getSingleMissingElement(), *One.getSingleElement()); 117 118 EXPECT_FALSE(Full.isSingleElement()); 119 EXPECT_FALSE(Empty.isSingleElement()); 120 EXPECT_TRUE(One.isSingleElement()); 121 EXPECT_FALSE(Some.isSingleElement()); 122 EXPECT_FALSE(Wrap.isSingleElement()); 123 } 124 125 TEST_F(ConstantRangeTest, GetSetSize) { 126 EXPECT_EQ(Full.getSetSize(), APInt(17, 65536)); 127 EXPECT_EQ(Empty.getSetSize(), APInt(17, 0)); 128 EXPECT_EQ(One.getSetSize(), APInt(17, 1)); 129 EXPECT_EQ(Some.getSetSize(), APInt(17, 0xaa0)); 130 131 ConstantRange Wrap(APInt(4, 7), APInt(4, 3)); 132 ConstantRange Wrap2(APInt(4, 8), APInt(4, 7)); 133 EXPECT_EQ(Wrap.getSetSize(), APInt(5, 12)); 134 EXPECT_EQ(Wrap2.getSetSize(), APInt(5, 15)); 135 } 136 137 TEST_F(ConstantRangeTest, GetMinsAndMaxes) { 138 EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX)); 139 EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa)); 140 EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9)); 141 EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX)); 142 143 EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0)); 144 EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa)); 145 EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa)); 146 EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0)); 147 148 EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX)); 149 EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa)); 150 EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9)); 151 EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX)); 152 153 EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN)); 154 EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa)); 155 EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa)); 156 EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN)); 157 158 // Found by Klee 159 EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(), 160 APInt(4, 7)); 161 } 162 163 TEST_F(ConstantRangeTest, SignWrapped) { 164 EXPECT_TRUE(Full.isSignWrappedSet()); 165 EXPECT_FALSE(Empty.isSignWrappedSet()); 166 EXPECT_FALSE(One.isSignWrappedSet()); 167 EXPECT_FALSE(Some.isSignWrappedSet()); 168 EXPECT_TRUE(Wrap.isSignWrappedSet()); 169 170 EXPECT_FALSE(ConstantRange(APInt(8, 127), APInt(8, 128)).isSignWrappedSet()); 171 EXPECT_TRUE(ConstantRange(APInt(8, 127), APInt(8, 129)).isSignWrappedSet()); 172 EXPECT_FALSE(ConstantRange(APInt(8, 128), APInt(8, 129)).isSignWrappedSet()); 173 EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 9)).isSignWrappedSet()); 174 EXPECT_TRUE(ConstantRange(APInt(8, 10), APInt(8, 250)).isSignWrappedSet()); 175 EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 10)).isSignWrappedSet()); 176 EXPECT_FALSE(ConstantRange(APInt(8, 250), APInt(8, 251)).isSignWrappedSet()); 177 } 178 179 TEST_F(ConstantRangeTest, Trunc) { 180 ConstantRange TFull = Full.truncate(10); 181 ConstantRange TEmpty = Empty.truncate(10); 182 ConstantRange TOne = One.truncate(10); 183 ConstantRange TSome = Some.truncate(10); 184 ConstantRange TWrap = Wrap.truncate(10); 185 EXPECT_TRUE(TFull.isFullSet()); 186 EXPECT_TRUE(TEmpty.isEmptySet()); 187 EXPECT_EQ(TOne, ConstantRange(One.getLower().trunc(10), 188 One.getUpper().trunc(10))); 189 EXPECT_TRUE(TSome.isFullSet()); 190 } 191 192 TEST_F(ConstantRangeTest, ZExt) { 193 ConstantRange ZFull = Full.zeroExtend(20); 194 ConstantRange ZEmpty = Empty.zeroExtend(20); 195 ConstantRange ZOne = One.zeroExtend(20); 196 ConstantRange ZSome = Some.zeroExtend(20); 197 ConstantRange ZWrap = Wrap.zeroExtend(20); 198 EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); 199 EXPECT_TRUE(ZEmpty.isEmptySet()); 200 EXPECT_EQ(ZOne, ConstantRange(One.getLower().zext(20), 201 One.getUpper().zext(20))); 202 EXPECT_EQ(ZSome, ConstantRange(Some.getLower().zext(20), 203 Some.getUpper().zext(20))); 204 EXPECT_EQ(ZWrap, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); 205 206 // zext([5, 0), 3->7) = [5, 8) 207 ConstantRange FiveZero(APInt(3, 5), APInt(3, 0)); 208 EXPECT_EQ(FiveZero.zeroExtend(7), ConstantRange(APInt(7, 5), APInt(7, 8))); 209 } 210 211 TEST_F(ConstantRangeTest, SExt) { 212 ConstantRange SFull = Full.signExtend(20); 213 ConstantRange SEmpty = Empty.signExtend(20); 214 ConstantRange SOne = One.signExtend(20); 215 ConstantRange SSome = Some.signExtend(20); 216 ConstantRange SWrap = Wrap.signExtend(20); 217 EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), 218 APInt(20, INT16_MAX + 1, true))); 219 EXPECT_TRUE(SEmpty.isEmptySet()); 220 EXPECT_EQ(SOne, ConstantRange(One.getLower().sext(20), 221 One.getUpper().sext(20))); 222 EXPECT_EQ(SSome, ConstantRange(Some.getLower().sext(20), 223 Some.getUpper().sext(20))); 224 EXPECT_EQ(SWrap, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), 225 APInt(20, INT16_MAX + 1, true))); 226 227 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16), 228 ConstantRange(APInt(16, -128), APInt(16, 128))); 229 230 EXPECT_EQ(ConstantRange(APInt(16, 0x0200), APInt(16, 0x8000)).signExtend(19), 231 ConstantRange(APInt(19, 0x0200), APInt(19, 0x8000))); 232 } 233 234 TEST_F(ConstantRangeTest, IntersectWith) { 235 EXPECT_EQ(Empty.intersectWith(Full), Empty); 236 EXPECT_EQ(Empty.intersectWith(Empty), Empty); 237 EXPECT_EQ(Empty.intersectWith(One), Empty); 238 EXPECT_EQ(Empty.intersectWith(Some), Empty); 239 EXPECT_EQ(Empty.intersectWith(Wrap), Empty); 240 EXPECT_EQ(Full.intersectWith(Full), Full); 241 EXPECT_EQ(Some.intersectWith(Some), Some); 242 EXPECT_EQ(Some.intersectWith(One), One); 243 EXPECT_EQ(Full.intersectWith(One), One); 244 EXPECT_EQ(Full.intersectWith(Some), Some); 245 EXPECT_EQ(Some.intersectWith(Wrap), Empty); 246 EXPECT_EQ(One.intersectWith(Wrap), Empty); 247 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One)); 248 249 // Klee generated testcase from PR4545. 250 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like 251 // 01..4.6789ABCDEF where the dots represent values not in the intersection. 252 ConstantRange LHS(APInt(16, 4), APInt(16, 2)); 253 ConstantRange RHS(APInt(16, 6), APInt(16, 5)); 254 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS); 255 256 // previous bug: intersection of [min, 3) and [2, max) should be 2 257 LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3)); 258 RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646)); 259 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2))); 260 261 // [2, 0) /\ [4, 3) = [2, 0) 262 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 263 RHS = ConstantRange(APInt(32, 4), APInt(32, 3)); 264 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0))); 265 266 // [2, 0) /\ [4, 2) = [4, 0) 267 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 268 RHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 269 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0))); 270 271 // [4, 2) /\ [5, 1) = [5, 1) 272 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 273 RHS = ConstantRange(APInt(32, 5), APInt(32, 1)); 274 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1))); 275 276 // [2, 0) /\ [7, 4) = [7, 4) 277 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 278 RHS = ConstantRange(APInt(32, 7), APInt(32, 4)); 279 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4))); 280 281 // [4, 2) /\ [1, 0) = [1, 0) 282 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 283 RHS = ConstantRange(APInt(32, 1), APInt(32, 0)); 284 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2))); 285 286 // [15, 0) /\ [7, 6) = [15, 0) 287 LHS = ConstantRange(APInt(32, 15), APInt(32, 0)); 288 RHS = ConstantRange(APInt(32, 7), APInt(32, 6)); 289 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0))); 290 } 291 292 TEST_F(ConstantRangeTest, UnionWith) { 293 EXPECT_EQ(Wrap.unionWith(One), 294 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb))); 295 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One)); 296 EXPECT_EQ(Empty.unionWith(Empty), Empty); 297 EXPECT_EQ(Full.unionWith(Full), Full); 298 EXPECT_EQ(Some.unionWith(Wrap), Full); 299 300 // PR4545 301 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith( 302 ConstantRange(APInt(16, 0), APInt(16, 8))), 303 ConstantRange(APInt(16, 14), APInt(16, 8))); 304 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith( 305 ConstantRange(APInt(16, 4), APInt(16, 0))), 306 ConstantRange(16)); 307 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith( 308 ConstantRange(APInt(16, 2), APInt(16, 1))), 309 ConstantRange(16)); 310 } 311 312 TEST_F(ConstantRangeTest, SetDifference) { 313 EXPECT_EQ(Full.difference(Empty), Full); 314 EXPECT_EQ(Full.difference(Full), Empty); 315 EXPECT_EQ(Empty.difference(Empty), Empty); 316 EXPECT_EQ(Empty.difference(Full), Empty); 317 318 ConstantRange A(APInt(16, 3), APInt(16, 7)); 319 ConstantRange B(APInt(16, 5), APInt(16, 9)); 320 ConstantRange C(APInt(16, 3), APInt(16, 5)); 321 ConstantRange D(APInt(16, 7), APInt(16, 9)); 322 ConstantRange E(APInt(16, 5), APInt(16, 4)); 323 ConstantRange F(APInt(16, 7), APInt(16, 3)); 324 EXPECT_EQ(A.difference(B), C); 325 EXPECT_EQ(B.difference(A), D); 326 EXPECT_EQ(E.difference(A), F); 327 } 328 329 TEST_F(ConstantRangeTest, SubtractAPInt) { 330 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full); 331 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty); 332 EXPECT_EQ(Some.subtract(APInt(16, 4)), 333 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 334 EXPECT_EQ(Wrap.subtract(APInt(16, 4)), 335 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 336 EXPECT_EQ(One.subtract(APInt(16, 4)), 337 ConstantRange(APInt(16, 0x6))); 338 } 339 340 TEST_F(ConstantRangeTest, Add) { 341 EXPECT_EQ(Full.add(APInt(16, 4)), Full); 342 EXPECT_EQ(Full.add(Full), Full); 343 EXPECT_EQ(Full.add(Empty), Empty); 344 EXPECT_EQ(Full.add(One), Full); 345 EXPECT_EQ(Full.add(Some), Full); 346 EXPECT_EQ(Full.add(Wrap), Full); 347 EXPECT_EQ(Empty.add(Empty), Empty); 348 EXPECT_EQ(Empty.add(One), Empty); 349 EXPECT_EQ(Empty.add(Some), Empty); 350 EXPECT_EQ(Empty.add(Wrap), Empty); 351 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty); 352 EXPECT_EQ(Some.add(APInt(16, 4)), 353 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae))); 354 EXPECT_EQ(Wrap.add(APInt(16, 4)), 355 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe))); 356 EXPECT_EQ(One.add(APInt(16, 4)), 357 ConstantRange(APInt(16, 0xe))); 358 } 359 360 TEST_F(ConstantRangeTest, AddWithNoSignedWrap) { 361 EXPECT_EQ(Empty.addWithNoSignedWrap(APInt(16, 1)), Empty); 362 EXPECT_EQ(Full.addWithNoSignedWrap(APInt(16, 1)), 363 ConstantRange(APInt(16, INT16_MIN+1), APInt(16, INT16_MIN))); 364 EXPECT_EQ(ConstantRange(APInt(8, -50), APInt(8, 50)).addWithNoSignedWrap(APInt(8, 10)), 365 ConstantRange(APInt(8, -40), APInt(8, 60))); 366 EXPECT_EQ(ConstantRange(APInt(8, -50), APInt(8, 120)).addWithNoSignedWrap(APInt(8, 10)), 367 ConstantRange(APInt(8, -40), APInt(8, INT8_MIN))); 368 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -10)).addWithNoSignedWrap(APInt(8, 5)), 369 ConstantRange(APInt(8, 125), APInt(8, -5))); 370 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -120)).addWithNoSignedWrap(APInt(8, 10)), 371 ConstantRange(APInt(8, INT8_MIN+10), APInt(8, -110))); 372 373 EXPECT_EQ(Empty.addWithNoSignedWrap(APInt(16, -1)), Empty); 374 EXPECT_EQ(Full.addWithNoSignedWrap(APInt(16, -1)), 375 ConstantRange(APInt(16, INT16_MIN), APInt(16, INT16_MAX))); 376 EXPECT_EQ(ConstantRange(APInt(8, -50), APInt(8, 50)).addWithNoSignedWrap(APInt(8, -10)), 377 ConstantRange(APInt(8, -60), APInt(8, 40))); 378 EXPECT_EQ(ConstantRange(APInt(8, -120), APInt(8, 50)).addWithNoSignedWrap(APInt(8, -10)), 379 ConstantRange(APInt(8, INT8_MIN), APInt(8, 40))); 380 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -120)).addWithNoSignedWrap(APInt(8, -5)), 381 ConstantRange(APInt(8, 115), APInt(8, -125))); 382 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -120)).addWithNoSignedWrap(APInt(8, -10)), 383 ConstantRange(APInt(8, 110), APInt(8, INT8_MIN-10))); 384 } 385 386 TEST_F(ConstantRangeTest, Sub) { 387 EXPECT_EQ(Full.sub(APInt(16, 4)), Full); 388 EXPECT_EQ(Full.sub(Full), Full); 389 EXPECT_EQ(Full.sub(Empty), Empty); 390 EXPECT_EQ(Full.sub(One), Full); 391 EXPECT_EQ(Full.sub(Some), Full); 392 EXPECT_EQ(Full.sub(Wrap), Full); 393 EXPECT_EQ(Empty.sub(Empty), Empty); 394 EXPECT_EQ(Empty.sub(One), Empty); 395 EXPECT_EQ(Empty.sub(Some), Empty); 396 EXPECT_EQ(Empty.sub(Wrap), Empty); 397 EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty); 398 EXPECT_EQ(Some.sub(APInt(16, 4)), 399 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 400 EXPECT_EQ(Some.sub(Some), 401 ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0))); 402 EXPECT_EQ(Wrap.sub(APInt(16, 4)), 403 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 404 EXPECT_EQ(One.sub(APInt(16, 4)), 405 ConstantRange(APInt(16, 0x6))); 406 } 407 408 TEST_F(ConstantRangeTest, Multiply) { 409 EXPECT_EQ(Full.multiply(Full), Full); 410 EXPECT_EQ(Full.multiply(Empty), Empty); 411 EXPECT_EQ(Full.multiply(One), Full); 412 EXPECT_EQ(Full.multiply(Some), Full); 413 EXPECT_EQ(Full.multiply(Wrap), Full); 414 EXPECT_EQ(Empty.multiply(Empty), Empty); 415 EXPECT_EQ(Empty.multiply(One), Empty); 416 EXPECT_EQ(Empty.multiply(Some), Empty); 417 EXPECT_EQ(Empty.multiply(Wrap), Empty); 418 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa), 419 APInt(16, 0xa*0xa + 1))); 420 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa), 421 APInt(16, 0xa*0xaa9 + 1))); 422 EXPECT_EQ(One.multiply(Wrap), Full); 423 EXPECT_EQ(Some.multiply(Some), Full); 424 EXPECT_EQ(Some.multiply(Wrap), Full); 425 EXPECT_EQ(Wrap.multiply(Wrap), Full); 426 427 ConstantRange Zero(APInt(16, 0)); 428 EXPECT_EQ(Zero.multiply(Full), Zero); 429 EXPECT_EQ(Zero.multiply(Some), Zero); 430 EXPECT_EQ(Zero.multiply(Wrap), Zero); 431 EXPECT_EQ(Full.multiply(Zero), Zero); 432 EXPECT_EQ(Some.multiply(Zero), Zero); 433 EXPECT_EQ(Wrap.multiply(Zero), Zero); 434 435 // http://llvm.org/PR4545 436 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply( 437 ConstantRange(APInt(4, 6), APInt(4, 2))), 438 ConstantRange(4, /*isFullSet=*/true)); 439 440 EXPECT_EQ(ConstantRange(APInt(8, 254), APInt(8, 0)).multiply( 441 ConstantRange(APInt(8, 252), APInt(8, 4))), 442 ConstantRange(APInt(8, 250), APInt(8, 9))); 443 EXPECT_EQ(ConstantRange(APInt(8, 254), APInt(8, 255)).multiply( 444 ConstantRange(APInt(8, 2), APInt(8, 4))), 445 ConstantRange(APInt(8, 250), APInt(8, 253))); 446 } 447 448 TEST_F(ConstantRangeTest, UMax) { 449 EXPECT_EQ(Full.umax(Full), Full); 450 EXPECT_EQ(Full.umax(Empty), Empty); 451 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 452 EXPECT_EQ(Full.umax(Wrap), Full); 453 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 454 EXPECT_EQ(Empty.umax(Empty), Empty); 455 EXPECT_EQ(Empty.umax(Some), Empty); 456 EXPECT_EQ(Empty.umax(Wrap), Empty); 457 EXPECT_EQ(Empty.umax(One), Empty); 458 EXPECT_EQ(Some.umax(Some), Some); 459 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 460 EXPECT_EQ(Some.umax(One), Some); 461 // TODO: ConstantRange is currently over-conservative here. 462 EXPECT_EQ(Wrap.umax(Wrap), Full); 463 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 464 EXPECT_EQ(One.umax(One), One); 465 } 466 467 TEST_F(ConstantRangeTest, SMax) { 468 EXPECT_EQ(Full.smax(Full), Full); 469 EXPECT_EQ(Full.smax(Empty), Empty); 470 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa), 471 APInt::getSignedMinValue(16))); 472 EXPECT_EQ(Full.smax(Wrap), Full); 473 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa), 474 APInt::getSignedMinValue(16))); 475 EXPECT_EQ(Empty.smax(Empty), Empty); 476 EXPECT_EQ(Empty.smax(Some), Empty); 477 EXPECT_EQ(Empty.smax(Wrap), Empty); 478 EXPECT_EQ(Empty.smax(One), Empty); 479 EXPECT_EQ(Some.smax(Some), Some); 480 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa), 481 APInt(16, (uint64_t)INT16_MIN))); 482 EXPECT_EQ(Some.smax(One), Some); 483 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa), 484 APInt(16, (uint64_t)INT16_MIN))); 485 EXPECT_EQ(One.smax(One), One); 486 } 487 488 TEST_F(ConstantRangeTest, UMin) { 489 EXPECT_EQ(Full.umin(Full), Full); 490 EXPECT_EQ(Full.umin(Empty), Empty); 491 EXPECT_EQ(Full.umin(Some), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 492 EXPECT_EQ(Full.umin(Wrap), Full); 493 EXPECT_EQ(Empty.umin(Empty), Empty); 494 EXPECT_EQ(Empty.umin(Some), Empty); 495 EXPECT_EQ(Empty.umin(Wrap), Empty); 496 EXPECT_EQ(Empty.umin(One), Empty); 497 EXPECT_EQ(Some.umin(Some), Some); 498 EXPECT_EQ(Some.umin(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 499 EXPECT_EQ(Some.umin(One), One); 500 // TODO: ConstantRange is currently over-conservative here. 501 EXPECT_EQ(Wrap.umin(Wrap), Full); 502 EXPECT_EQ(Wrap.umin(One), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 503 EXPECT_EQ(One.umin(One), One); 504 } 505 506 TEST_F(ConstantRangeTest, SMin) { 507 EXPECT_EQ(Full.smin(Full), Full); 508 EXPECT_EQ(Full.smin(Empty), Empty); 509 EXPECT_EQ(Full.smin(Some), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 510 APInt(16, 0xaaa))); 511 EXPECT_EQ(Full.smin(Wrap), Full); 512 EXPECT_EQ(Empty.smin(Empty), Empty); 513 EXPECT_EQ(Empty.smin(Some), Empty); 514 EXPECT_EQ(Empty.smin(Wrap), Empty); 515 EXPECT_EQ(Empty.smin(One), Empty); 516 EXPECT_EQ(Some.smin(Some), Some); 517 EXPECT_EQ(Some.smin(Wrap), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 518 APInt(16, 0xaaa))); 519 EXPECT_EQ(Some.smin(One), One); 520 // TODO: ConstantRange is currently over-conservative here. 521 EXPECT_EQ(Wrap.smin(Wrap), Full); 522 EXPECT_EQ(Wrap.smin(One), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 523 APInt(16, 0xb))); 524 EXPECT_EQ(One.smin(One), One); 525 } 526 527 TEST_F(ConstantRangeTest, UDiv) { 528 EXPECT_EQ(Full.udiv(Full), Full); 529 EXPECT_EQ(Full.udiv(Empty), Empty); 530 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0), 531 APInt(16, 0xffff / 0xa + 1))); 532 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0), 533 APInt(16, 0xffff / 0xa + 1))); 534 EXPECT_EQ(Full.udiv(Wrap), Full); 535 EXPECT_EQ(Empty.udiv(Empty), Empty); 536 EXPECT_EQ(Empty.udiv(One), Empty); 537 EXPECT_EQ(Empty.udiv(Some), Empty); 538 EXPECT_EQ(Empty.udiv(Wrap), Empty); 539 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1))); 540 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2))); 541 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 542 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111))); 543 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 544 EXPECT_EQ(Wrap.udiv(Wrap), Full); 545 } 546 547 TEST_F(ConstantRangeTest, Shl) { 548 EXPECT_EQ(Full.shl(Full), Full); 549 EXPECT_EQ(Full.shl(Empty), Empty); 550 EXPECT_EQ(Full.shl(One), Full); // TODO: [0, (-1 << 0xa) + 1) 551 EXPECT_EQ(Full.shl(Some), Full); // TODO: [0, (-1 << 0xa) + 1) 552 EXPECT_EQ(Full.shl(Wrap), Full); 553 EXPECT_EQ(Empty.shl(Empty), Empty); 554 EXPECT_EQ(Empty.shl(One), Empty); 555 EXPECT_EQ(Empty.shl(Some), Empty); 556 EXPECT_EQ(Empty.shl(Wrap), Empty); 557 EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa), 558 APInt(16, (0xa << 0xa) + 1))); 559 EXPECT_EQ(One.shl(Some), Full); // TODO: [0xa << 0xa, 0) 560 EXPECT_EQ(One.shl(Wrap), Full); // TODO: [0xa, 0xa << 14 + 1) 561 EXPECT_EQ(Some.shl(Some), Full); // TODO: [0xa << 0xa, 0xfc01) 562 EXPECT_EQ(Some.shl(Wrap), Full); // TODO: [0xa, 0x7ff << 0x5 + 1) 563 EXPECT_EQ(Wrap.shl(Wrap), Full); 564 } 565 566 TEST_F(ConstantRangeTest, Lshr) { 567 EXPECT_EQ(Full.lshr(Full), Full); 568 EXPECT_EQ(Full.lshr(Empty), Empty); 569 EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0), 570 APInt(16, (0xffff >> 0xa) + 1))); 571 EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0), 572 APInt(16, (0xffff >> 0xa) + 1))); 573 EXPECT_EQ(Full.lshr(Wrap), Full); 574 EXPECT_EQ(Empty.lshr(Empty), Empty); 575 EXPECT_EQ(Empty.lshr(One), Empty); 576 EXPECT_EQ(Empty.lshr(Some), Empty); 577 EXPECT_EQ(Empty.lshr(Wrap), Empty); 578 EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0))); 579 EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0))); 580 EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 581 EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0), 582 APInt(16, (0xaaa >> 0xa) + 1))); 583 EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 584 EXPECT_EQ(Wrap.lshr(Wrap), Full); 585 } 586 587 TEST(ConstantRange, MakeAllowedICmpRegion) { 588 // PR8250 589 ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32)); 590 EXPECT_TRUE(ConstantRange::makeAllowedICmpRegion(ICmpInst::ICMP_SGT, SMax) 591 .isEmptySet()); 592 } 593 594 TEST(ConstantRange, MakeSatisfyingICmpRegion) { 595 ConstantRange LowHalf(APInt(8, 0), APInt(8, 128)); 596 ConstantRange HighHalf(APInt(8, 128), APInt(8, 0)); 597 ConstantRange EmptySet(8, /* isFullSet = */ false); 598 599 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_NE, LowHalf), 600 HighHalf); 601 602 EXPECT_EQ( 603 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_NE, HighHalf), 604 LowHalf); 605 606 EXPECT_TRUE(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_EQ, 607 HighHalf).isEmptySet()); 608 609 ConstantRange UnsignedSample(APInt(8, 5), APInt(8, 200)); 610 611 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_ULT, 612 UnsignedSample), 613 ConstantRange(APInt(8, 0), APInt(8, 5))); 614 615 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_ULE, 616 UnsignedSample), 617 ConstantRange(APInt(8, 0), APInt(8, 6))); 618 619 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_UGT, 620 UnsignedSample), 621 ConstantRange(APInt(8, 200), APInt(8, 0))); 622 623 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_UGE, 624 UnsignedSample), 625 ConstantRange(APInt(8, 199), APInt(8, 0))); 626 627 ConstantRange SignedSample(APInt(8, -5), APInt(8, 5)); 628 629 EXPECT_EQ( 630 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SLT, SignedSample), 631 ConstantRange(APInt(8, -128), APInt(8, -5))); 632 633 EXPECT_EQ( 634 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SLE, SignedSample), 635 ConstantRange(APInt(8, -128), APInt(8, -4))); 636 637 EXPECT_EQ( 638 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SGT, SignedSample), 639 ConstantRange(APInt(8, 5), APInt(8, -128))); 640 641 EXPECT_EQ( 642 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SGE, SignedSample), 643 ConstantRange(APInt(8, 4), APInt(8, -128))); 644 } 645 646 TEST(ConstantRange, MakeGuaranteedNoWrapRegion) { 647 const int IntMin4Bits = 8; 648 const int IntMax4Bits = 7; 649 typedef OverflowingBinaryOperator OBO; 650 651 for (int Const : {0, -1, -2, 1, 2, IntMin4Bits, IntMax4Bits}) { 652 APInt C(4, Const, true /* = isSigned */); 653 654 auto NUWRegion = ConstantRange::makeGuaranteedNoWrapRegion( 655 Instruction::Add, C, OBO::NoUnsignedWrap); 656 657 EXPECT_FALSE(NUWRegion.isEmptySet()); 658 659 auto NSWRegion = ConstantRange::makeGuaranteedNoWrapRegion( 660 Instruction::Add, C, OBO::NoSignedWrap); 661 662 EXPECT_FALSE(NSWRegion.isEmptySet()); 663 664 auto NoWrapRegion = ConstantRange::makeGuaranteedNoWrapRegion( 665 Instruction::Add, C, OBO::NoSignedWrap | OBO::NoUnsignedWrap); 666 667 EXPECT_FALSE(NoWrapRegion.isEmptySet()); 668 EXPECT_TRUE(NUWRegion.intersectWith(NSWRegion).contains(NoWrapRegion)); 669 670 for (APInt I = NUWRegion.getLower(), E = NUWRegion.getUpper(); I != E; 671 ++I) { 672 bool Overflow = false; 673 I.uadd_ov(C, Overflow); 674 EXPECT_FALSE(Overflow); 675 } 676 677 for (APInt I = NSWRegion.getLower(), E = NSWRegion.getUpper(); I != E; 678 ++I) { 679 bool Overflow = false; 680 I.sadd_ov(C, Overflow); 681 EXPECT_FALSE(Overflow); 682 } 683 684 for (APInt I = NoWrapRegion.getLower(), E = NoWrapRegion.getUpper(); I != E; 685 ++I) { 686 bool Overflow = false; 687 688 I.sadd_ov(C, Overflow); 689 EXPECT_FALSE(Overflow); 690 691 I.uadd_ov(C, Overflow); 692 EXPECT_FALSE(Overflow); 693 } 694 } 695 696 auto NSWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 697 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 698 OBO::NoSignedWrap); 699 EXPECT_TRUE(NSWForAllValues.isSingleElement() && 700 NSWForAllValues.getSingleElement()->isMinValue()); 701 702 auto NUWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 703 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 704 OBO::NoUnsignedWrap); 705 EXPECT_TRUE(NUWForAllValues.isSingleElement() && 706 NSWForAllValues.getSingleElement()->isMinValue()); 707 708 auto NUWAndNSWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 709 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 710 OBO::NoUnsignedWrap | OBO::NoSignedWrap); 711 EXPECT_TRUE(NUWAndNSWForAllValues.isSingleElement() && 712 NSWForAllValues.getSingleElement()->isMinValue()); 713 714 ConstantRange OneToFive(APInt(32, 1), APInt(32, 6)); 715 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 716 Instruction::Add, OneToFive, OBO::NoSignedWrap), 717 ConstantRange(APInt::getSignedMinValue(32), 718 APInt::getSignedMaxValue(32) - 4)); 719 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 720 Instruction::Add, OneToFive, OBO::NoUnsignedWrap), 721 ConstantRange(APInt::getMinValue(32), APInt::getMinValue(32) - 5)); 722 EXPECT_EQ( 723 ConstantRange::makeGuaranteedNoWrapRegion( 724 Instruction::Add, OneToFive, OBO::NoUnsignedWrap | OBO::NoSignedWrap), 725 ConstantRange(APInt::getMinValue(32), APInt::getSignedMaxValue(32) - 4)); 726 727 ConstantRange MinusFiveToMinusTwo(APInt(32, -5), APInt(32, -1)); 728 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 729 Instruction::Add, MinusFiveToMinusTwo, OBO::NoSignedWrap), 730 ConstantRange(APInt::getSignedMinValue(32) + 5, 731 APInt::getSignedMinValue(32))); 732 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 733 Instruction::Add, MinusFiveToMinusTwo, OBO::NoUnsignedWrap), 734 ConstantRange(APInt(32, 0), APInt(32, 2))); 735 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 736 Instruction::Add, MinusFiveToMinusTwo, 737 OBO::NoUnsignedWrap | OBO::NoSignedWrap), 738 ConstantRange(APInt(32, 0), APInt(32, 2))); 739 740 ConstantRange MinusOneToOne(APInt(32, -1), APInt(32, 2)); 741 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 742 Instruction::Add, MinusOneToOne, OBO::NoSignedWrap), 743 ConstantRange(APInt::getSignedMinValue(32) + 1, 744 APInt::getSignedMinValue(32) - 1)); 745 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 746 Instruction::Add, MinusOneToOne, OBO::NoUnsignedWrap), 747 ConstantRange(APInt(32, 0), APInt(32, 1))); 748 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 749 Instruction::Add, MinusOneToOne, 750 OBO::NoUnsignedWrap | OBO::NoSignedWrap), 751 ConstantRange(APInt(32, 0), APInt(32, 1))); 752 } 753 754 TEST(ConstantRange, GetEquivalentICmp) { 755 APInt RHS; 756 CmpInst::Predicate Pred; 757 758 EXPECT_TRUE(ConstantRange(APInt::getMinValue(32), APInt(32, 100)) 759 .getEquivalentICmp(Pred, RHS)); 760 EXPECT_EQ(Pred, CmpInst::ICMP_ULT); 761 EXPECT_EQ(RHS, APInt(32, 100)); 762 763 EXPECT_TRUE(ConstantRange(APInt::getSignedMinValue(32), APInt(32, 100)) 764 .getEquivalentICmp(Pred, RHS)); 765 EXPECT_EQ(Pred, CmpInst::ICMP_SLT); 766 EXPECT_EQ(RHS, APInt(32, 100)); 767 768 EXPECT_TRUE(ConstantRange(APInt(32, 100), APInt::getMinValue(32)) 769 .getEquivalentICmp(Pred, RHS)); 770 EXPECT_EQ(Pred, CmpInst::ICMP_UGE); 771 EXPECT_EQ(RHS, APInt(32, 100)); 772 773 EXPECT_TRUE(ConstantRange(APInt(32, 100), APInt::getSignedMinValue(32)) 774 .getEquivalentICmp(Pred, RHS)); 775 EXPECT_EQ(Pred, CmpInst::ICMP_SGE); 776 EXPECT_EQ(RHS, APInt(32, 100)); 777 778 EXPECT_TRUE( 779 ConstantRange(32, /*isFullSet=*/true).getEquivalentICmp(Pred, RHS)); 780 EXPECT_EQ(Pred, CmpInst::ICMP_UGE); 781 EXPECT_EQ(RHS, APInt(32, 0)); 782 783 EXPECT_TRUE( 784 ConstantRange(32, /*isFullSet=*/false).getEquivalentICmp(Pred, RHS)); 785 EXPECT_EQ(Pred, CmpInst::ICMP_ULT); 786 EXPECT_EQ(RHS, APInt(32, 0)); 787 788 EXPECT_FALSE(ConstantRange(APInt(32, 100), APInt(32, 200)) 789 .getEquivalentICmp(Pred, RHS)); 790 791 EXPECT_FALSE(ConstantRange(APInt::getSignedMinValue(32) - APInt(32, 100), 792 APInt::getSignedMinValue(32) + APInt(32, 100)) 793 .getEquivalentICmp(Pred, RHS)); 794 795 EXPECT_FALSE(ConstantRange(APInt::getMinValue(32) - APInt(32, 100), 796 APInt::getMinValue(32) + APInt(32, 100)) 797 .getEquivalentICmp(Pred, RHS)); 798 799 EXPECT_TRUE(ConstantRange(APInt(32, 100)).getEquivalentICmp(Pred, RHS)); 800 EXPECT_EQ(Pred, CmpInst::ICMP_EQ); 801 EXPECT_EQ(RHS, APInt(32, 100)); 802 803 EXPECT_TRUE( 804 ConstantRange(APInt(32, 100)).inverse().getEquivalentICmp(Pred, RHS)); 805 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 806 EXPECT_EQ(RHS, APInt(32, 100)); 807 808 EXPECT_TRUE( 809 ConstantRange(APInt(512, 100)).inverse().getEquivalentICmp(Pred, RHS)); 810 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 811 EXPECT_EQ(RHS, APInt(512, 100)); 812 813 // NB! It would be correct for the following four calls to getEquivalentICmp 814 // to return ordered predicates like CmpInst::ICMP_ULT or CmpInst::ICMP_UGT. 815 // However, that's not the case today. 816 817 EXPECT_TRUE(ConstantRange(APInt(32, 0)).getEquivalentICmp(Pred, RHS)); 818 EXPECT_EQ(Pred, CmpInst::ICMP_EQ); 819 EXPECT_EQ(RHS, APInt(32, 0)); 820 821 EXPECT_TRUE( 822 ConstantRange(APInt(32, 0)).inverse().getEquivalentICmp(Pred, RHS)); 823 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 824 EXPECT_EQ(RHS, APInt(32, 0)); 825 826 EXPECT_TRUE(ConstantRange(APInt(32, -1)).getEquivalentICmp(Pred, RHS)); 827 EXPECT_EQ(Pred, CmpInst::ICMP_EQ); 828 EXPECT_EQ(RHS, APInt(32, -1)); 829 830 EXPECT_TRUE( 831 ConstantRange(APInt(32, -1)).inverse().getEquivalentICmp(Pred, RHS)); 832 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 833 EXPECT_EQ(RHS, APInt(32, -1)); 834 } 835 836 } // anonymous namespace 837