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 EXPECT_TRUE(TWrap.isFullSet()); 191 192 // trunc([2, 5), 3->2) = [2, 1) 193 ConstantRange TwoFive(APInt(3, 2), APInt(3, 5)); 194 EXPECT_EQ(TwoFive.truncate(2), ConstantRange(APInt(2, 2), APInt(2, 1))); 195 196 // trunc([2, 6), 3->2) = full 197 ConstantRange TwoSix(APInt(3, 2), APInt(3, 6)); 198 EXPECT_TRUE(TwoSix.truncate(2).isFullSet()); 199 200 // trunc([5, 7), 3->2) = [1, 3) 201 ConstantRange FiveSeven(APInt(3, 5), APInt(3, 7)); 202 EXPECT_EQ(FiveSeven.truncate(2), ConstantRange(APInt(2, 1), APInt(2, 3))); 203 204 // trunc([7, 1), 3->2) = [3, 1) 205 ConstantRange SevenOne(APInt(3, 7), APInt(3, 1)); 206 EXPECT_EQ(SevenOne.truncate(2), ConstantRange(APInt(2, 3), APInt(2, 1))); 207 } 208 209 TEST_F(ConstantRangeTest, ZExt) { 210 ConstantRange ZFull = Full.zeroExtend(20); 211 ConstantRange ZEmpty = Empty.zeroExtend(20); 212 ConstantRange ZOne = One.zeroExtend(20); 213 ConstantRange ZSome = Some.zeroExtend(20); 214 ConstantRange ZWrap = Wrap.zeroExtend(20); 215 EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); 216 EXPECT_TRUE(ZEmpty.isEmptySet()); 217 EXPECT_EQ(ZOne, ConstantRange(One.getLower().zext(20), 218 One.getUpper().zext(20))); 219 EXPECT_EQ(ZSome, ConstantRange(Some.getLower().zext(20), 220 Some.getUpper().zext(20))); 221 EXPECT_EQ(ZWrap, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); 222 223 // zext([5, 0), 3->7) = [5, 8) 224 ConstantRange FiveZero(APInt(3, 5), APInt(3, 0)); 225 EXPECT_EQ(FiveZero.zeroExtend(7), ConstantRange(APInt(7, 5), APInt(7, 8))); 226 } 227 228 TEST_F(ConstantRangeTest, SExt) { 229 ConstantRange SFull = Full.signExtend(20); 230 ConstantRange SEmpty = Empty.signExtend(20); 231 ConstantRange SOne = One.signExtend(20); 232 ConstantRange SSome = Some.signExtend(20); 233 ConstantRange SWrap = Wrap.signExtend(20); 234 EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), 235 APInt(20, INT16_MAX + 1, true))); 236 EXPECT_TRUE(SEmpty.isEmptySet()); 237 EXPECT_EQ(SOne, ConstantRange(One.getLower().sext(20), 238 One.getUpper().sext(20))); 239 EXPECT_EQ(SSome, ConstantRange(Some.getLower().sext(20), 240 Some.getUpper().sext(20))); 241 EXPECT_EQ(SWrap, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), 242 APInt(20, INT16_MAX + 1, true))); 243 244 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16), 245 ConstantRange(APInt(16, -128), APInt(16, 128))); 246 247 EXPECT_EQ(ConstantRange(APInt(16, 0x0200), APInt(16, 0x8000)).signExtend(19), 248 ConstantRange(APInt(19, 0x0200), APInt(19, 0x8000))); 249 } 250 251 TEST_F(ConstantRangeTest, IntersectWith) { 252 EXPECT_EQ(Empty.intersectWith(Full), Empty); 253 EXPECT_EQ(Empty.intersectWith(Empty), Empty); 254 EXPECT_EQ(Empty.intersectWith(One), Empty); 255 EXPECT_EQ(Empty.intersectWith(Some), Empty); 256 EXPECT_EQ(Empty.intersectWith(Wrap), Empty); 257 EXPECT_EQ(Full.intersectWith(Full), Full); 258 EXPECT_EQ(Some.intersectWith(Some), Some); 259 EXPECT_EQ(Some.intersectWith(One), One); 260 EXPECT_EQ(Full.intersectWith(One), One); 261 EXPECT_EQ(Full.intersectWith(Some), Some); 262 EXPECT_EQ(Some.intersectWith(Wrap), Empty); 263 EXPECT_EQ(One.intersectWith(Wrap), Empty); 264 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One)); 265 266 // Klee generated testcase from PR4545. 267 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like 268 // 01..4.6789ABCDEF where the dots represent values not in the intersection. 269 ConstantRange LHS(APInt(16, 4), APInt(16, 2)); 270 ConstantRange RHS(APInt(16, 6), APInt(16, 5)); 271 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS); 272 273 // previous bug: intersection of [min, 3) and [2, max) should be 2 274 LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3)); 275 RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646)); 276 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2))); 277 278 // [2, 0) /\ [4, 3) = [2, 0) 279 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 280 RHS = ConstantRange(APInt(32, 4), APInt(32, 3)); 281 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0))); 282 283 // [2, 0) /\ [4, 2) = [4, 0) 284 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 285 RHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 286 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0))); 287 288 // [4, 2) /\ [5, 1) = [5, 1) 289 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 290 RHS = ConstantRange(APInt(32, 5), APInt(32, 1)); 291 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1))); 292 293 // [2, 0) /\ [7, 4) = [7, 4) 294 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 295 RHS = ConstantRange(APInt(32, 7), APInt(32, 4)); 296 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4))); 297 298 // [4, 2) /\ [1, 0) = [1, 0) 299 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 300 RHS = ConstantRange(APInt(32, 1), APInt(32, 0)); 301 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2))); 302 303 // [15, 0) /\ [7, 6) = [15, 0) 304 LHS = ConstantRange(APInt(32, 15), APInt(32, 0)); 305 RHS = ConstantRange(APInt(32, 7), APInt(32, 6)); 306 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0))); 307 } 308 309 TEST_F(ConstantRangeTest, UnionWith) { 310 EXPECT_EQ(Wrap.unionWith(One), 311 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb))); 312 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One)); 313 EXPECT_EQ(Empty.unionWith(Empty), Empty); 314 EXPECT_EQ(Full.unionWith(Full), Full); 315 EXPECT_EQ(Some.unionWith(Wrap), Full); 316 317 // PR4545 318 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith( 319 ConstantRange(APInt(16, 0), APInt(16, 8))), 320 ConstantRange(APInt(16, 14), APInt(16, 8))); 321 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith( 322 ConstantRange(APInt(16, 4), APInt(16, 0))), 323 ConstantRange(16)); 324 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith( 325 ConstantRange(APInt(16, 2), APInt(16, 1))), 326 ConstantRange(16)); 327 } 328 329 TEST_F(ConstantRangeTest, SetDifference) { 330 EXPECT_EQ(Full.difference(Empty), Full); 331 EXPECT_EQ(Full.difference(Full), Empty); 332 EXPECT_EQ(Empty.difference(Empty), Empty); 333 EXPECT_EQ(Empty.difference(Full), Empty); 334 335 ConstantRange A(APInt(16, 3), APInt(16, 7)); 336 ConstantRange B(APInt(16, 5), APInt(16, 9)); 337 ConstantRange C(APInt(16, 3), APInt(16, 5)); 338 ConstantRange D(APInt(16, 7), APInt(16, 9)); 339 ConstantRange E(APInt(16, 5), APInt(16, 4)); 340 ConstantRange F(APInt(16, 7), APInt(16, 3)); 341 EXPECT_EQ(A.difference(B), C); 342 EXPECT_EQ(B.difference(A), D); 343 EXPECT_EQ(E.difference(A), F); 344 } 345 346 TEST_F(ConstantRangeTest, SubtractAPInt) { 347 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full); 348 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty); 349 EXPECT_EQ(Some.subtract(APInt(16, 4)), 350 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 351 EXPECT_EQ(Wrap.subtract(APInt(16, 4)), 352 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 353 EXPECT_EQ(One.subtract(APInt(16, 4)), 354 ConstantRange(APInt(16, 0x6))); 355 } 356 357 TEST_F(ConstantRangeTest, Add) { 358 EXPECT_EQ(Full.add(APInt(16, 4)), Full); 359 EXPECT_EQ(Full.add(Full), Full); 360 EXPECT_EQ(Full.add(Empty), Empty); 361 EXPECT_EQ(Full.add(One), Full); 362 EXPECT_EQ(Full.add(Some), Full); 363 EXPECT_EQ(Full.add(Wrap), Full); 364 EXPECT_EQ(Empty.add(Empty), Empty); 365 EXPECT_EQ(Empty.add(One), Empty); 366 EXPECT_EQ(Empty.add(Some), Empty); 367 EXPECT_EQ(Empty.add(Wrap), Empty); 368 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty); 369 EXPECT_EQ(Some.add(APInt(16, 4)), 370 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae))); 371 EXPECT_EQ(Wrap.add(APInt(16, 4)), 372 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe))); 373 EXPECT_EQ(One.add(APInt(16, 4)), 374 ConstantRange(APInt(16, 0xe))); 375 } 376 377 TEST_F(ConstantRangeTest, AddWithNoSignedWrap) { 378 EXPECT_EQ(Empty.addWithNoSignedWrap(APInt(16, 1)), Empty); 379 EXPECT_EQ(Full.addWithNoSignedWrap(APInt(16, 1)), 380 ConstantRange(APInt(16, INT16_MIN+1), APInt(16, INT16_MIN))); 381 EXPECT_EQ(ConstantRange(APInt(8, -50), APInt(8, 50)).addWithNoSignedWrap(APInt(8, 10)), 382 ConstantRange(APInt(8, -40), APInt(8, 60))); 383 EXPECT_EQ(ConstantRange(APInt(8, -50), APInt(8, 120)).addWithNoSignedWrap(APInt(8, 10)), 384 ConstantRange(APInt(8, -40), APInt(8, INT8_MIN))); 385 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -10)).addWithNoSignedWrap(APInt(8, 5)), 386 ConstantRange(APInt(8, 125), APInt(8, -5))); 387 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -120)).addWithNoSignedWrap(APInt(8, 10)), 388 ConstantRange(APInt(8, INT8_MIN+10), APInt(8, -110))); 389 390 EXPECT_EQ(Empty.addWithNoSignedWrap(APInt(16, -1)), Empty); 391 EXPECT_EQ(Full.addWithNoSignedWrap(APInt(16, -1)), 392 ConstantRange(APInt(16, INT16_MIN), APInt(16, INT16_MAX))); 393 EXPECT_EQ(ConstantRange(APInt(8, -50), APInt(8, 50)).addWithNoSignedWrap(APInt(8, -10)), 394 ConstantRange(APInt(8, -60), APInt(8, 40))); 395 EXPECT_EQ(ConstantRange(APInt(8, -120), APInt(8, 50)).addWithNoSignedWrap(APInt(8, -10)), 396 ConstantRange(APInt(8, INT8_MIN), APInt(8, 40))); 397 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -120)).addWithNoSignedWrap(APInt(8, -5)), 398 ConstantRange(APInt(8, 115), APInt(8, -125))); 399 EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, -120)).addWithNoSignedWrap(APInt(8, -10)), 400 ConstantRange(APInt(8, 110), APInt(8, INT8_MIN-10))); 401 } 402 403 TEST_F(ConstantRangeTest, Sub) { 404 EXPECT_EQ(Full.sub(APInt(16, 4)), Full); 405 EXPECT_EQ(Full.sub(Full), Full); 406 EXPECT_EQ(Full.sub(Empty), Empty); 407 EXPECT_EQ(Full.sub(One), Full); 408 EXPECT_EQ(Full.sub(Some), Full); 409 EXPECT_EQ(Full.sub(Wrap), Full); 410 EXPECT_EQ(Empty.sub(Empty), Empty); 411 EXPECT_EQ(Empty.sub(One), Empty); 412 EXPECT_EQ(Empty.sub(Some), Empty); 413 EXPECT_EQ(Empty.sub(Wrap), Empty); 414 EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty); 415 EXPECT_EQ(Some.sub(APInt(16, 4)), 416 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 417 EXPECT_EQ(Some.sub(Some), 418 ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0))); 419 EXPECT_EQ(Wrap.sub(APInt(16, 4)), 420 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 421 EXPECT_EQ(One.sub(APInt(16, 4)), 422 ConstantRange(APInt(16, 0x6))); 423 } 424 425 TEST_F(ConstantRangeTest, Multiply) { 426 EXPECT_EQ(Full.multiply(Full), Full); 427 EXPECT_EQ(Full.multiply(Empty), Empty); 428 EXPECT_EQ(Full.multiply(One), Full); 429 EXPECT_EQ(Full.multiply(Some), Full); 430 EXPECT_EQ(Full.multiply(Wrap), Full); 431 EXPECT_EQ(Empty.multiply(Empty), Empty); 432 EXPECT_EQ(Empty.multiply(One), Empty); 433 EXPECT_EQ(Empty.multiply(Some), Empty); 434 EXPECT_EQ(Empty.multiply(Wrap), Empty); 435 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa), 436 APInt(16, 0xa*0xa + 1))); 437 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa), 438 APInt(16, 0xa*0xaa9 + 1))); 439 EXPECT_EQ(One.multiply(Wrap), Full); 440 EXPECT_EQ(Some.multiply(Some), Full); 441 EXPECT_EQ(Some.multiply(Wrap), Full); 442 EXPECT_EQ(Wrap.multiply(Wrap), Full); 443 444 ConstantRange Zero(APInt(16, 0)); 445 EXPECT_EQ(Zero.multiply(Full), Zero); 446 EXPECT_EQ(Zero.multiply(Some), Zero); 447 EXPECT_EQ(Zero.multiply(Wrap), Zero); 448 EXPECT_EQ(Full.multiply(Zero), Zero); 449 EXPECT_EQ(Some.multiply(Zero), Zero); 450 EXPECT_EQ(Wrap.multiply(Zero), Zero); 451 452 // http://llvm.org/PR4545 453 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply( 454 ConstantRange(APInt(4, 6), APInt(4, 2))), 455 ConstantRange(4, /*isFullSet=*/true)); 456 457 EXPECT_EQ(ConstantRange(APInt(8, 254), APInt(8, 0)).multiply( 458 ConstantRange(APInt(8, 252), APInt(8, 4))), 459 ConstantRange(APInt(8, 250), APInt(8, 9))); 460 EXPECT_EQ(ConstantRange(APInt(8, 254), APInt(8, 255)).multiply( 461 ConstantRange(APInt(8, 2), APInt(8, 4))), 462 ConstantRange(APInt(8, 250), APInt(8, 253))); 463 464 // TODO: This should be return [-2, 0] 465 EXPECT_EQ(ConstantRange(APInt(8, -2)).multiply( 466 ConstantRange(APInt(8, 0), APInt(8, 2))), 467 ConstantRange(APInt(8, -2), APInt(8, 1))); 468 } 469 470 TEST_F(ConstantRangeTest, UMax) { 471 EXPECT_EQ(Full.umax(Full), Full); 472 EXPECT_EQ(Full.umax(Empty), Empty); 473 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 474 EXPECT_EQ(Full.umax(Wrap), Full); 475 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 476 EXPECT_EQ(Empty.umax(Empty), Empty); 477 EXPECT_EQ(Empty.umax(Some), Empty); 478 EXPECT_EQ(Empty.umax(Wrap), Empty); 479 EXPECT_EQ(Empty.umax(One), Empty); 480 EXPECT_EQ(Some.umax(Some), Some); 481 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 482 EXPECT_EQ(Some.umax(One), Some); 483 // TODO: ConstantRange is currently over-conservative here. 484 EXPECT_EQ(Wrap.umax(Wrap), Full); 485 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 486 EXPECT_EQ(One.umax(One), One); 487 } 488 489 TEST_F(ConstantRangeTest, SMax) { 490 EXPECT_EQ(Full.smax(Full), Full); 491 EXPECT_EQ(Full.smax(Empty), Empty); 492 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa), 493 APInt::getSignedMinValue(16))); 494 EXPECT_EQ(Full.smax(Wrap), Full); 495 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa), 496 APInt::getSignedMinValue(16))); 497 EXPECT_EQ(Empty.smax(Empty), Empty); 498 EXPECT_EQ(Empty.smax(Some), Empty); 499 EXPECT_EQ(Empty.smax(Wrap), Empty); 500 EXPECT_EQ(Empty.smax(One), Empty); 501 EXPECT_EQ(Some.smax(Some), Some); 502 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa), 503 APInt(16, (uint64_t)INT16_MIN))); 504 EXPECT_EQ(Some.smax(One), Some); 505 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa), 506 APInt(16, (uint64_t)INT16_MIN))); 507 EXPECT_EQ(One.smax(One), One); 508 } 509 510 TEST_F(ConstantRangeTest, UMin) { 511 EXPECT_EQ(Full.umin(Full), Full); 512 EXPECT_EQ(Full.umin(Empty), Empty); 513 EXPECT_EQ(Full.umin(Some), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 514 EXPECT_EQ(Full.umin(Wrap), Full); 515 EXPECT_EQ(Empty.umin(Empty), Empty); 516 EXPECT_EQ(Empty.umin(Some), Empty); 517 EXPECT_EQ(Empty.umin(Wrap), Empty); 518 EXPECT_EQ(Empty.umin(One), Empty); 519 EXPECT_EQ(Some.umin(Some), Some); 520 EXPECT_EQ(Some.umin(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 521 EXPECT_EQ(Some.umin(One), One); 522 // TODO: ConstantRange is currently over-conservative here. 523 EXPECT_EQ(Wrap.umin(Wrap), Full); 524 EXPECT_EQ(Wrap.umin(One), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 525 EXPECT_EQ(One.umin(One), One); 526 } 527 528 TEST_F(ConstantRangeTest, SMin) { 529 EXPECT_EQ(Full.smin(Full), Full); 530 EXPECT_EQ(Full.smin(Empty), Empty); 531 EXPECT_EQ(Full.smin(Some), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 532 APInt(16, 0xaaa))); 533 EXPECT_EQ(Full.smin(Wrap), Full); 534 EXPECT_EQ(Empty.smin(Empty), Empty); 535 EXPECT_EQ(Empty.smin(Some), Empty); 536 EXPECT_EQ(Empty.smin(Wrap), Empty); 537 EXPECT_EQ(Empty.smin(One), Empty); 538 EXPECT_EQ(Some.smin(Some), Some); 539 EXPECT_EQ(Some.smin(Wrap), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 540 APInt(16, 0xaaa))); 541 EXPECT_EQ(Some.smin(One), One); 542 // TODO: ConstantRange is currently over-conservative here. 543 EXPECT_EQ(Wrap.smin(Wrap), Full); 544 EXPECT_EQ(Wrap.smin(One), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 545 APInt(16, 0xb))); 546 EXPECT_EQ(One.smin(One), One); 547 } 548 549 TEST_F(ConstantRangeTest, UDiv) { 550 EXPECT_EQ(Full.udiv(Full), Full); 551 EXPECT_EQ(Full.udiv(Empty), Empty); 552 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0), 553 APInt(16, 0xffff / 0xa + 1))); 554 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0), 555 APInt(16, 0xffff / 0xa + 1))); 556 EXPECT_EQ(Full.udiv(Wrap), Full); 557 EXPECT_EQ(Empty.udiv(Empty), Empty); 558 EXPECT_EQ(Empty.udiv(One), Empty); 559 EXPECT_EQ(Empty.udiv(Some), Empty); 560 EXPECT_EQ(Empty.udiv(Wrap), Empty); 561 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1))); 562 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2))); 563 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 564 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111))); 565 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 566 EXPECT_EQ(Wrap.udiv(Wrap), Full); 567 } 568 569 TEST_F(ConstantRangeTest, Shl) { 570 EXPECT_EQ(Full.shl(Full), Full); 571 EXPECT_EQ(Full.shl(Empty), Empty); 572 EXPECT_EQ(Full.shl(One), Full); // TODO: [0, (-1 << 0xa) + 1) 573 EXPECT_EQ(Full.shl(Some), Full); // TODO: [0, (-1 << 0xa) + 1) 574 EXPECT_EQ(Full.shl(Wrap), Full); 575 EXPECT_EQ(Empty.shl(Empty), Empty); 576 EXPECT_EQ(Empty.shl(One), Empty); 577 EXPECT_EQ(Empty.shl(Some), Empty); 578 EXPECT_EQ(Empty.shl(Wrap), Empty); 579 EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa), 580 APInt(16, (0xa << 0xa) + 1))); 581 EXPECT_EQ(One.shl(Some), Full); // TODO: [0xa << 0xa, 0) 582 EXPECT_EQ(One.shl(Wrap), Full); // TODO: [0xa, 0xa << 14 + 1) 583 EXPECT_EQ(Some.shl(Some), Full); // TODO: [0xa << 0xa, 0xfc01) 584 EXPECT_EQ(Some.shl(Wrap), Full); // TODO: [0xa, 0x7ff << 0x5 + 1) 585 EXPECT_EQ(Wrap.shl(Wrap), Full); 586 } 587 588 TEST_F(ConstantRangeTest, Lshr) { 589 EXPECT_EQ(Full.lshr(Full), Full); 590 EXPECT_EQ(Full.lshr(Empty), Empty); 591 EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0), 592 APInt(16, (0xffff >> 0xa) + 1))); 593 EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0), 594 APInt(16, (0xffff >> 0xa) + 1))); 595 EXPECT_EQ(Full.lshr(Wrap), Full); 596 EXPECT_EQ(Empty.lshr(Empty), Empty); 597 EXPECT_EQ(Empty.lshr(One), Empty); 598 EXPECT_EQ(Empty.lshr(Some), Empty); 599 EXPECT_EQ(Empty.lshr(Wrap), Empty); 600 EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0))); 601 EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0))); 602 EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 603 EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0), 604 APInt(16, (0xaaa >> 0xa) + 1))); 605 EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 606 EXPECT_EQ(Wrap.lshr(Wrap), Full); 607 } 608 609 TEST(ConstantRange, MakeAllowedICmpRegion) { 610 // PR8250 611 ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32)); 612 EXPECT_TRUE(ConstantRange::makeAllowedICmpRegion(ICmpInst::ICMP_SGT, SMax) 613 .isEmptySet()); 614 } 615 616 TEST(ConstantRange, MakeSatisfyingICmpRegion) { 617 ConstantRange LowHalf(APInt(8, 0), APInt(8, 128)); 618 ConstantRange HighHalf(APInt(8, 128), APInt(8, 0)); 619 ConstantRange EmptySet(8, /* isFullSet = */ false); 620 621 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_NE, LowHalf), 622 HighHalf); 623 624 EXPECT_EQ( 625 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_NE, HighHalf), 626 LowHalf); 627 628 EXPECT_TRUE(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_EQ, 629 HighHalf).isEmptySet()); 630 631 ConstantRange UnsignedSample(APInt(8, 5), APInt(8, 200)); 632 633 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_ULT, 634 UnsignedSample), 635 ConstantRange(APInt(8, 0), APInt(8, 5))); 636 637 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_ULE, 638 UnsignedSample), 639 ConstantRange(APInt(8, 0), APInt(8, 6))); 640 641 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_UGT, 642 UnsignedSample), 643 ConstantRange(APInt(8, 200), APInt(8, 0))); 644 645 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_UGE, 646 UnsignedSample), 647 ConstantRange(APInt(8, 199), APInt(8, 0))); 648 649 ConstantRange SignedSample(APInt(8, -5), APInt(8, 5)); 650 651 EXPECT_EQ( 652 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SLT, SignedSample), 653 ConstantRange(APInt(8, -128), APInt(8, -5))); 654 655 EXPECT_EQ( 656 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SLE, SignedSample), 657 ConstantRange(APInt(8, -128), APInt(8, -4))); 658 659 EXPECT_EQ( 660 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SGT, SignedSample), 661 ConstantRange(APInt(8, 5), APInt(8, -128))); 662 663 EXPECT_EQ( 664 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SGE, SignedSample), 665 ConstantRange(APInt(8, 4), APInt(8, -128))); 666 } 667 668 TEST(ConstantRange, MakeGuaranteedNoWrapRegion) { 669 const int IntMin4Bits = 8; 670 const int IntMax4Bits = 7; 671 typedef OverflowingBinaryOperator OBO; 672 673 for (int Const : {0, -1, -2, 1, 2, IntMin4Bits, IntMax4Bits}) { 674 APInt C(4, Const, true /* = isSigned */); 675 676 auto NUWRegion = ConstantRange::makeGuaranteedNoWrapRegion( 677 Instruction::Add, C, OBO::NoUnsignedWrap); 678 679 EXPECT_FALSE(NUWRegion.isEmptySet()); 680 681 auto NSWRegion = ConstantRange::makeGuaranteedNoWrapRegion( 682 Instruction::Add, C, OBO::NoSignedWrap); 683 684 EXPECT_FALSE(NSWRegion.isEmptySet()); 685 686 auto NoWrapRegion = ConstantRange::makeGuaranteedNoWrapRegion( 687 Instruction::Add, C, OBO::NoSignedWrap | OBO::NoUnsignedWrap); 688 689 EXPECT_FALSE(NoWrapRegion.isEmptySet()); 690 EXPECT_TRUE(NUWRegion.intersectWith(NSWRegion).contains(NoWrapRegion)); 691 692 for (APInt I = NUWRegion.getLower(), E = NUWRegion.getUpper(); I != E; 693 ++I) { 694 bool Overflow = false; 695 (void)I.uadd_ov(C, Overflow); 696 EXPECT_FALSE(Overflow); 697 } 698 699 for (APInt I = NSWRegion.getLower(), E = NSWRegion.getUpper(); I != E; 700 ++I) { 701 bool Overflow = false; 702 (void)I.sadd_ov(C, Overflow); 703 EXPECT_FALSE(Overflow); 704 } 705 706 for (APInt I = NoWrapRegion.getLower(), E = NoWrapRegion.getUpper(); I != E; 707 ++I) { 708 bool Overflow = false; 709 710 (void)I.sadd_ov(C, Overflow); 711 EXPECT_FALSE(Overflow); 712 713 (void)I.uadd_ov(C, Overflow); 714 EXPECT_FALSE(Overflow); 715 } 716 } 717 718 auto NSWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 719 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 720 OBO::NoSignedWrap); 721 EXPECT_TRUE(NSWForAllValues.isSingleElement() && 722 NSWForAllValues.getSingleElement()->isMinValue()); 723 724 auto NUWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 725 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 726 OBO::NoUnsignedWrap); 727 EXPECT_TRUE(NUWForAllValues.isSingleElement() && 728 NUWForAllValues.getSingleElement()->isMinValue()); 729 730 auto NUWAndNSWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 731 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 732 OBO::NoUnsignedWrap | OBO::NoSignedWrap); 733 EXPECT_TRUE(NUWAndNSWForAllValues.isSingleElement() && 734 NUWAndNSWForAllValues.getSingleElement()->isMinValue()); 735 736 ConstantRange OneToFive(APInt(32, 1), APInt(32, 6)); 737 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 738 Instruction::Add, OneToFive, OBO::NoSignedWrap), 739 ConstantRange(APInt::getSignedMinValue(32), 740 APInt::getSignedMaxValue(32) - 4)); 741 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 742 Instruction::Add, OneToFive, OBO::NoUnsignedWrap), 743 ConstantRange(APInt::getMinValue(32), APInt::getMinValue(32) - 5)); 744 EXPECT_EQ( 745 ConstantRange::makeGuaranteedNoWrapRegion( 746 Instruction::Add, OneToFive, OBO::NoUnsignedWrap | OBO::NoSignedWrap), 747 ConstantRange(APInt::getMinValue(32), APInt::getSignedMaxValue(32) - 4)); 748 749 ConstantRange MinusFiveToMinusTwo(APInt(32, -5), APInt(32, -1)); 750 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 751 Instruction::Add, MinusFiveToMinusTwo, OBO::NoSignedWrap), 752 ConstantRange(APInt::getSignedMinValue(32) + 5, 753 APInt::getSignedMinValue(32))); 754 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 755 Instruction::Add, MinusFiveToMinusTwo, OBO::NoUnsignedWrap), 756 ConstantRange(APInt(32, 0), APInt(32, 2))); 757 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 758 Instruction::Add, MinusFiveToMinusTwo, 759 OBO::NoUnsignedWrap | OBO::NoSignedWrap), 760 ConstantRange(APInt(32, 0), APInt(32, 2))); 761 762 ConstantRange MinusOneToOne(APInt(32, -1), APInt(32, 2)); 763 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 764 Instruction::Add, MinusOneToOne, OBO::NoSignedWrap), 765 ConstantRange(APInt::getSignedMinValue(32) + 1, 766 APInt::getSignedMinValue(32) - 1)); 767 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 768 Instruction::Add, MinusOneToOne, OBO::NoUnsignedWrap), 769 ConstantRange(APInt(32, 0), APInt(32, 1))); 770 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 771 Instruction::Add, MinusOneToOne, 772 OBO::NoUnsignedWrap | OBO::NoSignedWrap), 773 ConstantRange(APInt(32, 0), APInt(32, 1))); 774 } 775 776 TEST(ConstantRange, GetEquivalentICmp) { 777 APInt RHS; 778 CmpInst::Predicate Pred; 779 780 EXPECT_TRUE(ConstantRange(APInt::getMinValue(32), APInt(32, 100)) 781 .getEquivalentICmp(Pred, RHS)); 782 EXPECT_EQ(Pred, CmpInst::ICMP_ULT); 783 EXPECT_EQ(RHS, APInt(32, 100)); 784 785 EXPECT_TRUE(ConstantRange(APInt::getSignedMinValue(32), APInt(32, 100)) 786 .getEquivalentICmp(Pred, RHS)); 787 EXPECT_EQ(Pred, CmpInst::ICMP_SLT); 788 EXPECT_EQ(RHS, APInt(32, 100)); 789 790 EXPECT_TRUE(ConstantRange(APInt(32, 100), APInt::getMinValue(32)) 791 .getEquivalentICmp(Pred, RHS)); 792 EXPECT_EQ(Pred, CmpInst::ICMP_UGE); 793 EXPECT_EQ(RHS, APInt(32, 100)); 794 795 EXPECT_TRUE(ConstantRange(APInt(32, 100), APInt::getSignedMinValue(32)) 796 .getEquivalentICmp(Pred, RHS)); 797 EXPECT_EQ(Pred, CmpInst::ICMP_SGE); 798 EXPECT_EQ(RHS, APInt(32, 100)); 799 800 EXPECT_TRUE( 801 ConstantRange(32, /*isFullSet=*/true).getEquivalentICmp(Pred, RHS)); 802 EXPECT_EQ(Pred, CmpInst::ICMP_UGE); 803 EXPECT_EQ(RHS, APInt(32, 0)); 804 805 EXPECT_TRUE( 806 ConstantRange(32, /*isFullSet=*/false).getEquivalentICmp(Pred, RHS)); 807 EXPECT_EQ(Pred, CmpInst::ICMP_ULT); 808 EXPECT_EQ(RHS, APInt(32, 0)); 809 810 EXPECT_FALSE(ConstantRange(APInt(32, 100), APInt(32, 200)) 811 .getEquivalentICmp(Pred, RHS)); 812 813 EXPECT_FALSE(ConstantRange(APInt::getSignedMinValue(32) - APInt(32, 100), 814 APInt::getSignedMinValue(32) + APInt(32, 100)) 815 .getEquivalentICmp(Pred, RHS)); 816 817 EXPECT_FALSE(ConstantRange(APInt::getMinValue(32) - APInt(32, 100), 818 APInt::getMinValue(32) + APInt(32, 100)) 819 .getEquivalentICmp(Pred, RHS)); 820 821 EXPECT_TRUE(ConstantRange(APInt(32, 100)).getEquivalentICmp(Pred, RHS)); 822 EXPECT_EQ(Pred, CmpInst::ICMP_EQ); 823 EXPECT_EQ(RHS, APInt(32, 100)); 824 825 EXPECT_TRUE( 826 ConstantRange(APInt(32, 100)).inverse().getEquivalentICmp(Pred, RHS)); 827 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 828 EXPECT_EQ(RHS, APInt(32, 100)); 829 830 EXPECT_TRUE( 831 ConstantRange(APInt(512, 100)).inverse().getEquivalentICmp(Pred, RHS)); 832 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 833 EXPECT_EQ(RHS, APInt(512, 100)); 834 835 // NB! It would be correct for the following four calls to getEquivalentICmp 836 // to return ordered predicates like CmpInst::ICMP_ULT or CmpInst::ICMP_UGT. 837 // However, that's not the case today. 838 839 EXPECT_TRUE(ConstantRange(APInt(32, 0)).getEquivalentICmp(Pred, RHS)); 840 EXPECT_EQ(Pred, CmpInst::ICMP_EQ); 841 EXPECT_EQ(RHS, APInt(32, 0)); 842 843 EXPECT_TRUE( 844 ConstantRange(APInt(32, 0)).inverse().getEquivalentICmp(Pred, RHS)); 845 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 846 EXPECT_EQ(RHS, APInt(32, 0)); 847 848 EXPECT_TRUE(ConstantRange(APInt(32, -1)).getEquivalentICmp(Pred, RHS)); 849 EXPECT_EQ(Pred, CmpInst::ICMP_EQ); 850 EXPECT_EQ(RHS, APInt(32, -1)); 851 852 EXPECT_TRUE( 853 ConstantRange(APInt(32, -1)).inverse().getEquivalentICmp(Pred, RHS)); 854 EXPECT_EQ(Pred, CmpInst::ICMP_NE); 855 EXPECT_EQ(RHS, APInt(32, -1)); 856 } 857 858 } // anonymous namespace 859