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(*One.getSingleElement(), APInt(16, 0xa)); 106 EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(nullptr)); 107 EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(nullptr)); 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 EXPECT_EQ(ConstantRange(APInt(16, 0x0200), APInt(16, 0x8000)).signExtend(19), 222 ConstantRange(APInt(19, 0x0200), APInt(19, 0x8000))); 223 } 224 225 TEST_F(ConstantRangeTest, IntersectWith) { 226 EXPECT_EQ(Empty.intersectWith(Full), Empty); 227 EXPECT_EQ(Empty.intersectWith(Empty), Empty); 228 EXPECT_EQ(Empty.intersectWith(One), Empty); 229 EXPECT_EQ(Empty.intersectWith(Some), Empty); 230 EXPECT_EQ(Empty.intersectWith(Wrap), Empty); 231 EXPECT_EQ(Full.intersectWith(Full), Full); 232 EXPECT_EQ(Some.intersectWith(Some), Some); 233 EXPECT_EQ(Some.intersectWith(One), One); 234 EXPECT_EQ(Full.intersectWith(One), One); 235 EXPECT_EQ(Full.intersectWith(Some), Some); 236 EXPECT_EQ(Some.intersectWith(Wrap), Empty); 237 EXPECT_EQ(One.intersectWith(Wrap), Empty); 238 EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One)); 239 240 // Klee generated testcase from PR4545. 241 // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like 242 // 01..4.6789ABCDEF where the dots represent values not in the intersection. 243 ConstantRange LHS(APInt(16, 4), APInt(16, 2)); 244 ConstantRange RHS(APInt(16, 6), APInt(16, 5)); 245 EXPECT_TRUE(LHS.intersectWith(RHS) == LHS); 246 247 // previous bug: intersection of [min, 3) and [2, max) should be 2 248 LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3)); 249 RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646)); 250 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2))); 251 252 // [2, 0) /\ [4, 3) = [2, 0) 253 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 254 RHS = ConstantRange(APInt(32, 4), APInt(32, 3)); 255 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0))); 256 257 // [2, 0) /\ [4, 2) = [4, 0) 258 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 259 RHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 260 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0))); 261 262 // [4, 2) /\ [5, 1) = [5, 1) 263 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 264 RHS = ConstantRange(APInt(32, 5), APInt(32, 1)); 265 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1))); 266 267 // [2, 0) /\ [7, 4) = [7, 4) 268 LHS = ConstantRange(APInt(32, 2), APInt(32, 0)); 269 RHS = ConstantRange(APInt(32, 7), APInt(32, 4)); 270 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4))); 271 272 // [4, 2) /\ [1, 0) = [1, 0) 273 LHS = ConstantRange(APInt(32, 4), APInt(32, 2)); 274 RHS = ConstantRange(APInt(32, 1), APInt(32, 0)); 275 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2))); 276 277 // [15, 0) /\ [7, 6) = [15, 0) 278 LHS = ConstantRange(APInt(32, 15), APInt(32, 0)); 279 RHS = ConstantRange(APInt(32, 7), APInt(32, 6)); 280 EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0))); 281 } 282 283 TEST_F(ConstantRangeTest, UnionWith) { 284 EXPECT_EQ(Wrap.unionWith(One), 285 ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb))); 286 EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One)); 287 EXPECT_EQ(Empty.unionWith(Empty), Empty); 288 EXPECT_EQ(Full.unionWith(Full), Full); 289 EXPECT_EQ(Some.unionWith(Wrap), Full); 290 291 // PR4545 292 EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith( 293 ConstantRange(APInt(16, 0), APInt(16, 8))), 294 ConstantRange(APInt(16, 14), APInt(16, 8))); 295 EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith( 296 ConstantRange(APInt(16, 4), APInt(16, 0))), 297 ConstantRange(16)); 298 EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith( 299 ConstantRange(APInt(16, 2), APInt(16, 1))), 300 ConstantRange(16)); 301 } 302 303 TEST_F(ConstantRangeTest, SetDifference) { 304 EXPECT_EQ(Full.difference(Empty), Full); 305 EXPECT_EQ(Full.difference(Full), Empty); 306 EXPECT_EQ(Empty.difference(Empty), Empty); 307 EXPECT_EQ(Empty.difference(Full), Empty); 308 309 ConstantRange A(APInt(16, 3), APInt(16, 7)); 310 ConstantRange B(APInt(16, 5), APInt(16, 9)); 311 ConstantRange C(APInt(16, 3), APInt(16, 5)); 312 ConstantRange D(APInt(16, 7), APInt(16, 9)); 313 ConstantRange E(APInt(16, 5), APInt(16, 4)); 314 ConstantRange F(APInt(16, 7), APInt(16, 3)); 315 EXPECT_EQ(A.difference(B), C); 316 EXPECT_EQ(B.difference(A), D); 317 EXPECT_EQ(E.difference(A), F); 318 } 319 320 TEST_F(ConstantRangeTest, SubtractAPInt) { 321 EXPECT_EQ(Full.subtract(APInt(16, 4)), Full); 322 EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty); 323 EXPECT_EQ(Some.subtract(APInt(16, 4)), 324 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 325 EXPECT_EQ(Wrap.subtract(APInt(16, 4)), 326 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 327 EXPECT_EQ(One.subtract(APInt(16, 4)), 328 ConstantRange(APInt(16, 0x6))); 329 } 330 331 TEST_F(ConstantRangeTest, Add) { 332 EXPECT_EQ(Full.add(APInt(16, 4)), Full); 333 EXPECT_EQ(Full.add(Full), Full); 334 EXPECT_EQ(Full.add(Empty), Empty); 335 EXPECT_EQ(Full.add(One), Full); 336 EXPECT_EQ(Full.add(Some), Full); 337 EXPECT_EQ(Full.add(Wrap), Full); 338 EXPECT_EQ(Empty.add(Empty), Empty); 339 EXPECT_EQ(Empty.add(One), Empty); 340 EXPECT_EQ(Empty.add(Some), Empty); 341 EXPECT_EQ(Empty.add(Wrap), Empty); 342 EXPECT_EQ(Empty.add(APInt(16, 4)), Empty); 343 EXPECT_EQ(Some.add(APInt(16, 4)), 344 ConstantRange(APInt(16, 0xe), APInt(16, 0xaae))); 345 EXPECT_EQ(Wrap.add(APInt(16, 4)), 346 ConstantRange(APInt(16, 0xaae), APInt(16, 0xe))); 347 EXPECT_EQ(One.add(APInt(16, 4)), 348 ConstantRange(APInt(16, 0xe))); 349 } 350 351 TEST_F(ConstantRangeTest, Sub) { 352 EXPECT_EQ(Full.sub(APInt(16, 4)), Full); 353 EXPECT_EQ(Full.sub(Full), Full); 354 EXPECT_EQ(Full.sub(Empty), Empty); 355 EXPECT_EQ(Full.sub(One), Full); 356 EXPECT_EQ(Full.sub(Some), Full); 357 EXPECT_EQ(Full.sub(Wrap), Full); 358 EXPECT_EQ(Empty.sub(Empty), Empty); 359 EXPECT_EQ(Empty.sub(One), Empty); 360 EXPECT_EQ(Empty.sub(Some), Empty); 361 EXPECT_EQ(Empty.sub(Wrap), Empty); 362 EXPECT_EQ(Empty.sub(APInt(16, 4)), Empty); 363 EXPECT_EQ(Some.sub(APInt(16, 4)), 364 ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); 365 EXPECT_EQ(Some.sub(Some), 366 ConstantRange(APInt(16, 0xf561), APInt(16, 0xaa0))); 367 EXPECT_EQ(Wrap.sub(APInt(16, 4)), 368 ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); 369 EXPECT_EQ(One.sub(APInt(16, 4)), 370 ConstantRange(APInt(16, 0x6))); 371 } 372 373 TEST_F(ConstantRangeTest, Multiply) { 374 EXPECT_EQ(Full.multiply(Full), Full); 375 EXPECT_EQ(Full.multiply(Empty), Empty); 376 EXPECT_EQ(Full.multiply(One), Full); 377 EXPECT_EQ(Full.multiply(Some), Full); 378 EXPECT_EQ(Full.multiply(Wrap), Full); 379 EXPECT_EQ(Empty.multiply(Empty), Empty); 380 EXPECT_EQ(Empty.multiply(One), Empty); 381 EXPECT_EQ(Empty.multiply(Some), Empty); 382 EXPECT_EQ(Empty.multiply(Wrap), Empty); 383 EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa), 384 APInt(16, 0xa*0xa + 1))); 385 EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa), 386 APInt(16, 0xa*0xaa9 + 1))); 387 EXPECT_EQ(One.multiply(Wrap), Full); 388 EXPECT_EQ(Some.multiply(Some), Full); 389 EXPECT_EQ(Some.multiply(Wrap), Full); 390 EXPECT_EQ(Wrap.multiply(Wrap), Full); 391 392 ConstantRange Zero(APInt(16, 0)); 393 EXPECT_EQ(Zero.multiply(Full), Zero); 394 EXPECT_EQ(Zero.multiply(Some), Zero); 395 EXPECT_EQ(Zero.multiply(Wrap), Zero); 396 EXPECT_EQ(Full.multiply(Zero), Zero); 397 EXPECT_EQ(Some.multiply(Zero), Zero); 398 EXPECT_EQ(Wrap.multiply(Zero), Zero); 399 400 // http://llvm.org/PR4545 401 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply( 402 ConstantRange(APInt(4, 6), APInt(4, 2))), 403 ConstantRange(4, /*isFullSet=*/true)); 404 405 EXPECT_EQ(ConstantRange(APInt(8, 254), APInt(8, 0)).multiply( 406 ConstantRange(APInt(8, 252), APInt(8, 4))), 407 ConstantRange(APInt(8, 250), APInt(8, 9))); 408 EXPECT_EQ(ConstantRange(APInt(8, 254), APInt(8, 255)).multiply( 409 ConstantRange(APInt(8, 2), APInt(8, 4))), 410 ConstantRange(APInt(8, 250), APInt(8, 253))); 411 } 412 413 TEST_F(ConstantRangeTest, UMax) { 414 EXPECT_EQ(Full.umax(Full), Full); 415 EXPECT_EQ(Full.umax(Empty), Empty); 416 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 417 EXPECT_EQ(Full.umax(Wrap), Full); 418 EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 419 EXPECT_EQ(Empty.umax(Empty), Empty); 420 EXPECT_EQ(Empty.umax(Some), Empty); 421 EXPECT_EQ(Empty.umax(Wrap), Empty); 422 EXPECT_EQ(Empty.umax(One), Empty); 423 EXPECT_EQ(Some.umax(Some), Some); 424 EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 425 EXPECT_EQ(Some.umax(One), Some); 426 // TODO: ConstantRange is currently over-conservative here. 427 EXPECT_EQ(Wrap.umax(Wrap), Full); 428 EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0))); 429 EXPECT_EQ(One.umax(One), One); 430 } 431 432 TEST_F(ConstantRangeTest, SMax) { 433 EXPECT_EQ(Full.smax(Full), Full); 434 EXPECT_EQ(Full.smax(Empty), Empty); 435 EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa), 436 APInt::getSignedMinValue(16))); 437 EXPECT_EQ(Full.smax(Wrap), Full); 438 EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa), 439 APInt::getSignedMinValue(16))); 440 EXPECT_EQ(Empty.smax(Empty), Empty); 441 EXPECT_EQ(Empty.smax(Some), Empty); 442 EXPECT_EQ(Empty.smax(Wrap), Empty); 443 EXPECT_EQ(Empty.smax(One), Empty); 444 EXPECT_EQ(Some.smax(Some), Some); 445 EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa), 446 APInt(16, (uint64_t)INT16_MIN))); 447 EXPECT_EQ(Some.smax(One), Some); 448 EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa), 449 APInt(16, (uint64_t)INT16_MIN))); 450 EXPECT_EQ(One.smax(One), One); 451 } 452 453 TEST_F(ConstantRangeTest, UMin) { 454 EXPECT_EQ(Full.umin(Full), Full); 455 EXPECT_EQ(Full.umin(Empty), Empty); 456 EXPECT_EQ(Full.umin(Some), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 457 EXPECT_EQ(Full.umin(Wrap), Full); 458 EXPECT_EQ(Empty.umin(Empty), Empty); 459 EXPECT_EQ(Empty.umin(Some), Empty); 460 EXPECT_EQ(Empty.umin(Wrap), Empty); 461 EXPECT_EQ(Empty.umin(One), Empty); 462 EXPECT_EQ(Some.umin(Some), Some); 463 EXPECT_EQ(Some.umin(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 464 EXPECT_EQ(Some.umin(One), One); 465 // TODO: ConstantRange is currently over-conservative here. 466 EXPECT_EQ(Wrap.umin(Wrap), Full); 467 EXPECT_EQ(Wrap.umin(One), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 468 EXPECT_EQ(One.umin(One), One); 469 } 470 471 TEST_F(ConstantRangeTest, SMin) { 472 EXPECT_EQ(Full.smin(Full), Full); 473 EXPECT_EQ(Full.smin(Empty), Empty); 474 EXPECT_EQ(Full.smin(Some), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 475 APInt(16, 0xaaa))); 476 EXPECT_EQ(Full.smin(Wrap), Full); 477 EXPECT_EQ(Empty.smin(Empty), Empty); 478 EXPECT_EQ(Empty.smin(Some), Empty); 479 EXPECT_EQ(Empty.smin(Wrap), Empty); 480 EXPECT_EQ(Empty.smin(One), Empty); 481 EXPECT_EQ(Some.smin(Some), Some); 482 EXPECT_EQ(Some.smin(Wrap), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 483 APInt(16, 0xaaa))); 484 EXPECT_EQ(Some.smin(One), One); 485 // TODO: ConstantRange is currently over-conservative here. 486 EXPECT_EQ(Wrap.smin(Wrap), Full); 487 EXPECT_EQ(Wrap.smin(One), ConstantRange(APInt(16, (uint64_t)INT16_MIN), 488 APInt(16, 0xb))); 489 EXPECT_EQ(One.smin(One), One); 490 } 491 492 TEST_F(ConstantRangeTest, UDiv) { 493 EXPECT_EQ(Full.udiv(Full), Full); 494 EXPECT_EQ(Full.udiv(Empty), Empty); 495 EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0), 496 APInt(16, 0xffff / 0xa + 1))); 497 EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0), 498 APInt(16, 0xffff / 0xa + 1))); 499 EXPECT_EQ(Full.udiv(Wrap), Full); 500 EXPECT_EQ(Empty.udiv(Empty), Empty); 501 EXPECT_EQ(Empty.udiv(One), Empty); 502 EXPECT_EQ(Empty.udiv(Some), Empty); 503 EXPECT_EQ(Empty.udiv(Wrap), Empty); 504 EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1))); 505 EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2))); 506 EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 507 EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111))); 508 EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 509 EXPECT_EQ(Wrap.udiv(Wrap), Full); 510 } 511 512 TEST_F(ConstantRangeTest, Shl) { 513 EXPECT_EQ(Full.shl(Full), Full); 514 EXPECT_EQ(Full.shl(Empty), Empty); 515 EXPECT_EQ(Full.shl(One), Full); // TODO: [0, (-1 << 0xa) + 1) 516 EXPECT_EQ(Full.shl(Some), Full); // TODO: [0, (-1 << 0xa) + 1) 517 EXPECT_EQ(Full.shl(Wrap), Full); 518 EXPECT_EQ(Empty.shl(Empty), Empty); 519 EXPECT_EQ(Empty.shl(One), Empty); 520 EXPECT_EQ(Empty.shl(Some), Empty); 521 EXPECT_EQ(Empty.shl(Wrap), Empty); 522 EXPECT_EQ(One.shl(One), ConstantRange(APInt(16, 0xa << 0xa), 523 APInt(16, (0xa << 0xa) + 1))); 524 EXPECT_EQ(One.shl(Some), Full); // TODO: [0xa << 0xa, 0) 525 EXPECT_EQ(One.shl(Wrap), Full); // TODO: [0xa, 0xa << 14 + 1) 526 EXPECT_EQ(Some.shl(Some), Full); // TODO: [0xa << 0xa, 0xfc01) 527 EXPECT_EQ(Some.shl(Wrap), Full); // TODO: [0xa, 0x7ff << 0x5 + 1) 528 EXPECT_EQ(Wrap.shl(Wrap), Full); 529 } 530 531 TEST_F(ConstantRangeTest, Lshr) { 532 EXPECT_EQ(Full.lshr(Full), Full); 533 EXPECT_EQ(Full.lshr(Empty), Empty); 534 EXPECT_EQ(Full.lshr(One), ConstantRange(APInt(16, 0), 535 APInt(16, (0xffff >> 0xa) + 1))); 536 EXPECT_EQ(Full.lshr(Some), ConstantRange(APInt(16, 0), 537 APInt(16, (0xffff >> 0xa) + 1))); 538 EXPECT_EQ(Full.lshr(Wrap), Full); 539 EXPECT_EQ(Empty.lshr(Empty), Empty); 540 EXPECT_EQ(Empty.lshr(One), Empty); 541 EXPECT_EQ(Empty.lshr(Some), Empty); 542 EXPECT_EQ(Empty.lshr(Wrap), Empty); 543 EXPECT_EQ(One.lshr(One), ConstantRange(APInt(16, 0))); 544 EXPECT_EQ(One.lshr(Some), ConstantRange(APInt(16, 0))); 545 EXPECT_EQ(One.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); 546 EXPECT_EQ(Some.lshr(Some), ConstantRange(APInt(16, 0), 547 APInt(16, (0xaaa >> 0xa) + 1))); 548 EXPECT_EQ(Some.lshr(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); 549 EXPECT_EQ(Wrap.lshr(Wrap), Full); 550 } 551 552 TEST(ConstantRange, MakeAllowedICmpRegion) { 553 // PR8250 554 ConstantRange SMax = ConstantRange(APInt::getSignedMaxValue(32)); 555 EXPECT_TRUE(ConstantRange::makeAllowedICmpRegion(ICmpInst::ICMP_SGT, SMax) 556 .isEmptySet()); 557 } 558 559 TEST(ConstantRange, MakeSatisfyingICmpRegion) { 560 ConstantRange LowHalf(APInt(8, 0), APInt(8, 128)); 561 ConstantRange HighHalf(APInt(8, 128), APInt(8, 0)); 562 ConstantRange EmptySet(8, /* isFullSet = */ false); 563 564 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_NE, LowHalf), 565 HighHalf); 566 567 EXPECT_EQ( 568 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_NE, HighHalf), 569 LowHalf); 570 571 EXPECT_TRUE(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_EQ, 572 HighHalf).isEmptySet()); 573 574 ConstantRange UnsignedSample(APInt(8, 5), APInt(8, 200)); 575 576 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_ULT, 577 UnsignedSample), 578 ConstantRange(APInt(8, 0), APInt(8, 5))); 579 580 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_ULE, 581 UnsignedSample), 582 ConstantRange(APInt(8, 0), APInt(8, 6))); 583 584 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_UGT, 585 UnsignedSample), 586 ConstantRange(APInt(8, 200), APInt(8, 0))); 587 588 EXPECT_EQ(ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_UGE, 589 UnsignedSample), 590 ConstantRange(APInt(8, 199), APInt(8, 0))); 591 592 ConstantRange SignedSample(APInt(8, -5), APInt(8, 5)); 593 594 EXPECT_EQ( 595 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SLT, SignedSample), 596 ConstantRange(APInt(8, -128), APInt(8, -5))); 597 598 EXPECT_EQ( 599 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SLE, SignedSample), 600 ConstantRange(APInt(8, -128), APInt(8, -4))); 601 602 EXPECT_EQ( 603 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SGT, SignedSample), 604 ConstantRange(APInt(8, 5), APInt(8, -128))); 605 606 EXPECT_EQ( 607 ConstantRange::makeSatisfyingICmpRegion(ICmpInst::ICMP_SGE, SignedSample), 608 ConstantRange(APInt(8, 4), APInt(8, -128))); 609 } 610 611 TEST(ConstantRange, MakeGuaranteedNoWrapRegion) { 612 const int IntMin4Bits = 8; 613 const int IntMax4Bits = 7; 614 typedef OverflowingBinaryOperator OBO; 615 616 for (int Const : {0, -1, -2, 1, 2, IntMin4Bits, IntMax4Bits}) { 617 APInt C(4, Const, true /* = isSigned */); 618 619 auto NUWRegion = ConstantRange::makeGuaranteedNoWrapRegion( 620 Instruction::Add, C, OBO::NoUnsignedWrap); 621 622 EXPECT_FALSE(NUWRegion.isEmptySet()); 623 624 auto NSWRegion = ConstantRange::makeGuaranteedNoWrapRegion( 625 Instruction::Add, C, OBO::NoSignedWrap); 626 627 EXPECT_FALSE(NSWRegion.isEmptySet()); 628 629 auto NoWrapRegion = ConstantRange::makeGuaranteedNoWrapRegion( 630 Instruction::Add, C, OBO::NoSignedWrap | OBO::NoUnsignedWrap); 631 632 EXPECT_FALSE(NoWrapRegion.isEmptySet()); 633 EXPECT_TRUE(NUWRegion.intersectWith(NSWRegion).contains(NoWrapRegion)); 634 635 for (APInt I = NUWRegion.getLower(), E = NUWRegion.getUpper(); I != E; 636 ++I) { 637 bool Overflow = false; 638 I.uadd_ov(C, Overflow); 639 EXPECT_FALSE(Overflow); 640 } 641 642 for (APInt I = NSWRegion.getLower(), E = NSWRegion.getUpper(); I != E; 643 ++I) { 644 bool Overflow = false; 645 I.sadd_ov(C, Overflow); 646 EXPECT_FALSE(Overflow); 647 } 648 649 for (APInt I = NoWrapRegion.getLower(), E = NoWrapRegion.getUpper(); I != E; 650 ++I) { 651 bool Overflow = false; 652 653 I.sadd_ov(C, Overflow); 654 EXPECT_FALSE(Overflow); 655 656 I.uadd_ov(C, Overflow); 657 EXPECT_FALSE(Overflow); 658 } 659 } 660 661 auto NSWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 662 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 663 OBO::NoSignedWrap); 664 EXPECT_TRUE(NSWForAllValues.isSingleElement() && 665 NSWForAllValues.getSingleElement()->isMinValue()); 666 667 auto NUWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 668 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 669 OBO::NoUnsignedWrap); 670 EXPECT_TRUE(NUWForAllValues.isSingleElement() && 671 NSWForAllValues.getSingleElement()->isMinValue()); 672 673 auto NUWAndNSWForAllValues = ConstantRange::makeGuaranteedNoWrapRegion( 674 Instruction::Add, ConstantRange(32, /* isFullSet = */ true), 675 OBO::NoUnsignedWrap | OBO::NoSignedWrap); 676 EXPECT_TRUE(NUWAndNSWForAllValues.isSingleElement() && 677 NSWForAllValues.getSingleElement()->isMinValue()); 678 679 ConstantRange OneToFive(APInt(32, 1), APInt(32, 6)); 680 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 681 Instruction::Add, OneToFive, OBO::NoSignedWrap), 682 ConstantRange(APInt::getSignedMinValue(32), 683 APInt::getSignedMaxValue(32) - 4)); 684 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 685 Instruction::Add, OneToFive, OBO::NoUnsignedWrap), 686 ConstantRange(APInt::getMinValue(32), APInt::getMinValue(32) - 5)); 687 EXPECT_EQ( 688 ConstantRange::makeGuaranteedNoWrapRegion( 689 Instruction::Add, OneToFive, OBO::NoUnsignedWrap | OBO::NoSignedWrap), 690 ConstantRange(APInt::getMinValue(32), APInt::getSignedMaxValue(32) - 4)); 691 692 ConstantRange MinusFiveToMinusTwo(APInt(32, -5), APInt(32, -1)); 693 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 694 Instruction::Add, MinusFiveToMinusTwo, OBO::NoSignedWrap), 695 ConstantRange(APInt::getSignedMinValue(32) + 5, 696 APInt::getSignedMinValue(32))); 697 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 698 Instruction::Add, MinusFiveToMinusTwo, OBO::NoUnsignedWrap), 699 ConstantRange(APInt(32, 0), APInt(32, 2))); 700 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 701 Instruction::Add, MinusFiveToMinusTwo, 702 OBO::NoUnsignedWrap | OBO::NoSignedWrap), 703 ConstantRange(APInt(32, 0), APInt(32, 2))); 704 705 ConstantRange MinusOneToOne(APInt(32, -1), APInt(32, 2)); 706 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 707 Instruction::Add, MinusOneToOne, OBO::NoSignedWrap), 708 ConstantRange(APInt::getSignedMinValue(32) + 1, 709 APInt::getSignedMinValue(32) - 1)); 710 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 711 Instruction::Add, MinusOneToOne, OBO::NoUnsignedWrap), 712 ConstantRange(APInt(32, 0), APInt(32, 1))); 713 EXPECT_EQ(ConstantRange::makeGuaranteedNoWrapRegion( 714 Instruction::Add, MinusOneToOne, 715 OBO::NoUnsignedWrap | OBO::NoSignedWrap), 716 ConstantRange(APInt(32, 0), APInt(32, 1))); 717 } 718 719 TEST(ConstantRange, GetEquivalentICmp) { 720 APInt RHS; 721 CmpInst::Predicate Pred; 722 723 EXPECT_TRUE(ConstantRange(APInt::getMinValue(32), APInt(32, 100)) 724 .getEquivalentICmp(Pred, RHS)); 725 EXPECT_EQ(Pred, CmpInst::ICMP_ULT); 726 EXPECT_EQ(RHS, APInt(32, 100)); 727 728 EXPECT_TRUE(ConstantRange(APInt::getSignedMinValue(32), APInt(32, 100)) 729 .getEquivalentICmp(Pred, RHS)); 730 EXPECT_EQ(Pred, CmpInst::ICMP_SLT); 731 EXPECT_EQ(RHS, APInt(32, 100)); 732 733 EXPECT_TRUE(ConstantRange(APInt(32, 100), APInt::getMinValue(32)) 734 .getEquivalentICmp(Pred, RHS)); 735 EXPECT_EQ(Pred, CmpInst::ICMP_UGE); 736 EXPECT_EQ(RHS, APInt(32, 100)); 737 738 EXPECT_TRUE(ConstantRange(APInt(32, 100), APInt::getSignedMinValue(32)) 739 .getEquivalentICmp(Pred, RHS)); 740 EXPECT_EQ(Pred, CmpInst::ICMP_SGE); 741 EXPECT_EQ(RHS, APInt(32, 100)); 742 743 EXPECT_TRUE( 744 ConstantRange(32, /*isFullSet=*/true).getEquivalentICmp(Pred, RHS)); 745 EXPECT_EQ(Pred, CmpInst::ICMP_UGE); 746 EXPECT_EQ(RHS, APInt(32, 0)); 747 748 EXPECT_TRUE( 749 ConstantRange(32, /*isFullSet=*/false).getEquivalentICmp(Pred, RHS)); 750 EXPECT_EQ(Pred, CmpInst::ICMP_ULT); 751 EXPECT_EQ(RHS, APInt(32, 0)); 752 753 EXPECT_FALSE(ConstantRange(APInt(32, 100), APInt(32, 200)) 754 .getEquivalentICmp(Pred, RHS)); 755 756 EXPECT_FALSE(ConstantRange(APInt::getSignedMinValue(32) - APInt(32, 100), 757 APInt::getSignedMinValue(32) + APInt(32, 100)) 758 .getEquivalentICmp(Pred, RHS)); 759 760 EXPECT_FALSE(ConstantRange(APInt::getMinValue(32) - APInt(32, 100), 761 APInt::getMinValue(32) + APInt(32, 100)) 762 .getEquivalentICmp(Pred, RHS)); 763 } 764 765 } // anonymous namespace 766
