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Diffstat (limited to 'unittests/Support/ConstantRangeTest.cpp')
| -rw-r--r-- | unittests/Support/ConstantRangeTest.cpp | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/unittests/Support/ConstantRangeTest.cpp b/unittests/Support/ConstantRangeTest.cpp new file mode 100644 index 0000000..6b8d01d --- /dev/null +++ b/unittests/Support/ConstantRangeTest.cpp @@ -0,0 +1,351 @@ +//===- llvm/unittest/Support/ConstantRangeTest.cpp - ConstantRange tests --===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "llvm/Support/ConstantRange.h" + +#include "gtest/gtest.h" + +using namespace llvm; + +namespace { + +class ConstantRangeTest : public ::testing::Test { +protected: + static ConstantRange Full; + static ConstantRange Empty; + static ConstantRange One; + static ConstantRange Some; + static ConstantRange Wrap; +}; + +ConstantRange ConstantRangeTest::Full(16); +ConstantRange ConstantRangeTest::Empty(16, false); +ConstantRange ConstantRangeTest::One(APInt(16, 0xa)); +ConstantRange ConstantRangeTest::Some(APInt(16, 0xa), APInt(16, 0xaaa)); +ConstantRange ConstantRangeTest::Wrap(APInt(16, 0xaaa), APInt(16, 0xa)); + +TEST_F(ConstantRangeTest, Basics) { + EXPECT_TRUE(Full.isFullSet()); + EXPECT_FALSE(Full.isEmptySet()); + EXPECT_FALSE(Full.isWrappedSet()); + EXPECT_TRUE(Full.contains(APInt(16, 0x0))); + EXPECT_TRUE(Full.contains(APInt(16, 0x9))); + EXPECT_TRUE(Full.contains(APInt(16, 0xa))); + EXPECT_TRUE(Full.contains(APInt(16, 0xaa9))); + EXPECT_TRUE(Full.contains(APInt(16, 0xaaa))); + + EXPECT_FALSE(Empty.isFullSet()); + EXPECT_TRUE(Empty.isEmptySet()); + EXPECT_FALSE(Empty.isWrappedSet()); + EXPECT_FALSE(Empty.contains(APInt(16, 0x0))); + EXPECT_FALSE(Empty.contains(APInt(16, 0x9))); + EXPECT_FALSE(Empty.contains(APInt(16, 0xa))); + EXPECT_FALSE(Empty.contains(APInt(16, 0xaa9))); + EXPECT_FALSE(Empty.contains(APInt(16, 0xaaa))); + + EXPECT_FALSE(One.isFullSet()); + EXPECT_FALSE(One.isEmptySet()); + EXPECT_FALSE(One.isWrappedSet()); + EXPECT_FALSE(One.contains(APInt(16, 0x0))); + EXPECT_FALSE(One.contains(APInt(16, 0x9))); + EXPECT_TRUE(One.contains(APInt(16, 0xa))); + EXPECT_FALSE(One.contains(APInt(16, 0xaa9))); + EXPECT_FALSE(One.contains(APInt(16, 0xaaa))); + + EXPECT_FALSE(Some.isFullSet()); + EXPECT_FALSE(Some.isEmptySet()); + EXPECT_FALSE(Some.isWrappedSet()); + EXPECT_FALSE(Some.contains(APInt(16, 0x0))); + EXPECT_FALSE(Some.contains(APInt(16, 0x9))); + EXPECT_TRUE(Some.contains(APInt(16, 0xa))); + EXPECT_TRUE(Some.contains(APInt(16, 0xaa9))); + EXPECT_FALSE(Some.contains(APInt(16, 0xaaa))); + + EXPECT_FALSE(Wrap.isFullSet()); + EXPECT_FALSE(Wrap.isEmptySet()); + EXPECT_TRUE(Wrap.isWrappedSet()); + EXPECT_TRUE(Wrap.contains(APInt(16, 0x0))); + EXPECT_TRUE(Wrap.contains(APInt(16, 0x9))); + EXPECT_FALSE(Wrap.contains(APInt(16, 0xa))); + EXPECT_FALSE(Wrap.contains(APInt(16, 0xaa9))); + EXPECT_TRUE(Wrap.contains(APInt(16, 0xaaa))); +} + +TEST_F(ConstantRangeTest, Equality) { + EXPECT_EQ(Full, Full); + EXPECT_EQ(Empty, Empty); + EXPECT_EQ(One, One); + EXPECT_EQ(Some, Some); + EXPECT_EQ(Wrap, Wrap); + EXPECT_NE(Full, Empty); + EXPECT_NE(Full, One); + EXPECT_NE(Full, Some); + EXPECT_NE(Full, Wrap); + EXPECT_NE(Empty, One); + EXPECT_NE(Empty, Some); + EXPECT_NE(Empty, Wrap); + EXPECT_NE(One, Some); + EXPECT_NE(One, Wrap); + EXPECT_NE(Some, Wrap); +} + +TEST_F(ConstantRangeTest, SingleElement) { + EXPECT_EQ(Full.getSingleElement(), static_cast<APInt *>(NULL)); + EXPECT_EQ(Empty.getSingleElement(), static_cast<APInt *>(NULL)); + EXPECT_EQ(*One.getSingleElement(), APInt(16, 0xa)); + EXPECT_EQ(Some.getSingleElement(), static_cast<APInt *>(NULL)); + EXPECT_EQ(Wrap.getSingleElement(), static_cast<APInt *>(NULL)); + + EXPECT_FALSE(Full.isSingleElement()); + EXPECT_FALSE(Empty.isSingleElement()); + EXPECT_TRUE(One.isSingleElement()); + EXPECT_FALSE(Some.isSingleElement()); + EXPECT_FALSE(Wrap.isSingleElement()); +} + +TEST_F(ConstantRangeTest, GetSetSize) { + EXPECT_EQ(Full.getSetSize(), APInt(16, 0)); + EXPECT_EQ(Empty.getSetSize(), APInt(16, 0)); + EXPECT_EQ(One.getSetSize(), APInt(16, 1)); + EXPECT_EQ(Some.getSetSize(), APInt(16, 0xaa0)); + EXPECT_EQ(Wrap.getSetSize(), APInt(16, 0x10000 - 0xaa0)); +} + +TEST_F(ConstantRangeTest, GetMinsAndMaxes) { + EXPECT_EQ(Full.getUnsignedMax(), APInt(16, UINT16_MAX)); + EXPECT_EQ(One.getUnsignedMax(), APInt(16, 0xa)); + EXPECT_EQ(Some.getUnsignedMax(), APInt(16, 0xaa9)); + EXPECT_EQ(Wrap.getUnsignedMax(), APInt(16, UINT16_MAX)); + + EXPECT_EQ(Full.getUnsignedMin(), APInt(16, 0)); + EXPECT_EQ(One.getUnsignedMin(), APInt(16, 0xa)); + EXPECT_EQ(Some.getUnsignedMin(), APInt(16, 0xa)); + EXPECT_EQ(Wrap.getUnsignedMin(), APInt(16, 0)); + + EXPECT_EQ(Full.getSignedMax(), APInt(16, INT16_MAX)); + EXPECT_EQ(One.getSignedMax(), APInt(16, 0xa)); + EXPECT_EQ(Some.getSignedMax(), APInt(16, 0xaa9)); + EXPECT_EQ(Wrap.getSignedMax(), APInt(16, INT16_MAX)); + + EXPECT_EQ(Full.getSignedMin(), APInt(16, (uint64_t)INT16_MIN)); + EXPECT_EQ(One.getSignedMin(), APInt(16, 0xa)); + EXPECT_EQ(Some.getSignedMin(), APInt(16, 0xa)); + EXPECT_EQ(Wrap.getSignedMin(), APInt(16, (uint64_t)INT16_MIN)); + + // Found by Klee + EXPECT_EQ(ConstantRange(APInt(4, 7), APInt(4, 0)).getSignedMax(), + APInt(4, 7)); +} + +TEST_F(ConstantRangeTest, Trunc) { + ConstantRange TFull = Full.truncate(10); + ConstantRange TEmpty = Empty.truncate(10); + ConstantRange TOne = One.truncate(10); + ConstantRange TSome = Some.truncate(10); + ConstantRange TWrap = Wrap.truncate(10); + EXPECT_TRUE(TFull.isFullSet()); + EXPECT_TRUE(TEmpty.isEmptySet()); + EXPECT_EQ(TOne, ConstantRange(APInt(One.getLower()).trunc(10), + APInt(One.getUpper()).trunc(10))); + EXPECT_TRUE(TSome.isFullSet()); +} + +TEST_F(ConstantRangeTest, ZExt) { + ConstantRange ZFull = Full.zeroExtend(20); + ConstantRange ZEmpty = Empty.zeroExtend(20); + ConstantRange ZOne = One.zeroExtend(20); + ConstantRange ZSome = Some.zeroExtend(20); + ConstantRange ZWrap = Wrap.zeroExtend(20); + EXPECT_EQ(ZFull, ConstantRange(APInt(20, 0), APInt(20, 0x10000))); + EXPECT_TRUE(ZEmpty.isEmptySet()); + EXPECT_EQ(ZOne, ConstantRange(APInt(One.getLower()).zext(20), + APInt(One.getUpper()).zext(20))); + EXPECT_EQ(ZSome, ConstantRange(APInt(Some.getLower()).zext(20), + APInt(Some.getUpper()).zext(20))); + EXPECT_EQ(ZWrap, ConstantRange(APInt(Wrap.getLower()).zext(20), + APInt(Wrap.getUpper()).zext(20))); +} + +TEST_F(ConstantRangeTest, SExt) { + ConstantRange SFull = Full.signExtend(20); + ConstantRange SEmpty = Empty.signExtend(20); + ConstantRange SOne = One.signExtend(20); + ConstantRange SSome = Some.signExtend(20); + ConstantRange SWrap = Wrap.signExtend(20); + EXPECT_EQ(SFull, ConstantRange(APInt(20, (uint64_t)INT16_MIN, true), + APInt(20, INT16_MAX + 1, true))); + EXPECT_TRUE(SEmpty.isEmptySet()); + EXPECT_EQ(SOne, ConstantRange(APInt(One.getLower()).sext(20), + APInt(One.getUpper()).sext(20))); + EXPECT_EQ(SSome, ConstantRange(APInt(Some.getLower()).sext(20), + APInt(Some.getUpper()).sext(20))); + EXPECT_EQ(SWrap, ConstantRange(APInt(Wrap.getLower()).sext(20), + APInt(Wrap.getUpper()).sext(20))); +} + +TEST_F(ConstantRangeTest, IntersectWith) { + EXPECT_EQ(Empty.intersectWith(Full), Empty); + EXPECT_EQ(Empty.intersectWith(Empty), Empty); + EXPECT_EQ(Empty.intersectWith(One), Empty); + EXPECT_EQ(Empty.intersectWith(Some), Empty); + EXPECT_EQ(Empty.intersectWith(Wrap), Empty); + EXPECT_EQ(Full.intersectWith(Full), Full); + EXPECT_EQ(Some.intersectWith(Some), Some); + EXPECT_EQ(Some.intersectWith(One), One); + EXPECT_EQ(Full.intersectWith(One), One); + EXPECT_EQ(Full.intersectWith(Some), Some); + EXPECT_EQ(Some.intersectWith(Wrap), Empty); + EXPECT_EQ(One.intersectWith(Wrap), Empty); + EXPECT_EQ(One.intersectWith(Wrap), Wrap.intersectWith(One)); + + // Klee generated testcase from PR4545. + // The intersection of i16 [4, 2) and [6, 5) is disjoint, looking like + // 01..4.6789ABCDEF where the dots represent values not in the intersection. + ConstantRange LHS(APInt(16, 4), APInt(16, 2)); + ConstantRange RHS(APInt(16, 6), APInt(16, 5)); + EXPECT_TRUE(LHS.intersectWith(RHS) == LHS); +} + +TEST_F(ConstantRangeTest, UnionWith) { + EXPECT_EQ(Wrap.unionWith(One), + ConstantRange(APInt(16, 0xaaa), APInt(16, 0xb))); + EXPECT_EQ(One.unionWith(Wrap), Wrap.unionWith(One)); + EXPECT_EQ(Empty.unionWith(Empty), Empty); + EXPECT_EQ(Full.unionWith(Full), Full); + EXPECT_EQ(Some.unionWith(Wrap), Full); + + // PR4545 + EXPECT_EQ(ConstantRange(APInt(16, 14), APInt(16, 1)).unionWith( + ConstantRange(APInt(16, 0), APInt(16, 8))), + ConstantRange(APInt(16, 14), APInt(16, 8))); + EXPECT_EQ(ConstantRange(APInt(16, 6), APInt(16, 4)).unionWith( + ConstantRange(APInt(16, 4), APInt(16, 0))), + ConstantRange(16)); + EXPECT_EQ(ConstantRange(APInt(16, 1), APInt(16, 0)).unionWith( + ConstantRange(APInt(16, 2), APInt(16, 1))), + ConstantRange(16)); +} + +TEST_F(ConstantRangeTest, SubtractAPInt) { + EXPECT_EQ(Full.subtract(APInt(16, 4)), Full); + EXPECT_EQ(Empty.subtract(APInt(16, 4)), Empty); + EXPECT_EQ(Some.subtract(APInt(16, 4)), + ConstantRange(APInt(16, 0x6), APInt(16, 0xaa6))); + EXPECT_EQ(Wrap.subtract(APInt(16, 4)), + ConstantRange(APInt(16, 0xaa6), APInt(16, 0x6))); + EXPECT_EQ(One.subtract(APInt(16, 4)), + ConstantRange(APInt(16, 0x6))); +} + +TEST_F(ConstantRangeTest, Add) { + EXPECT_EQ(Full.add(APInt(16, 4)), Full); + EXPECT_EQ(Full.add(Full), Full); + EXPECT_EQ(Full.add(Empty), Empty); + EXPECT_EQ(Full.add(One), Full); + EXPECT_EQ(Full.add(Some), Full); + EXPECT_EQ(Full.add(Wrap), Full); + EXPECT_EQ(Empty.add(Empty), Empty); + EXPECT_EQ(Empty.add(One), Empty); + EXPECT_EQ(Empty.add(Some), Empty); + EXPECT_EQ(Empty.add(Wrap), Empty); + EXPECT_EQ(Empty.add(APInt(16, 4)), Empty); + EXPECT_EQ(Some.add(APInt(16, 4)), + ConstantRange(APInt(16, 0xe), APInt(16, 0xaae))); + EXPECT_EQ(Wrap.add(APInt(16, 4)), + ConstantRange(APInt(16, 0xaae), APInt(16, 0xe))); + EXPECT_EQ(One.add(APInt(16, 4)), + ConstantRange(APInt(16, 0xe))); +} + +TEST_F(ConstantRangeTest, Multiply) { + EXPECT_EQ(Full.multiply(Full), Full); + EXPECT_EQ(Full.multiply(Empty), Empty); + EXPECT_EQ(Full.multiply(One), Full); + EXPECT_EQ(Full.multiply(Some), Full); + EXPECT_EQ(Full.multiply(Wrap), Full); + EXPECT_EQ(Empty.multiply(Empty), Empty); + EXPECT_EQ(Empty.multiply(One), Empty); + EXPECT_EQ(Empty.multiply(Some), Empty); + EXPECT_EQ(Empty.multiply(Wrap), Empty); + EXPECT_EQ(One.multiply(One), ConstantRange(APInt(16, 0xa*0xa), + APInt(16, 0xa*0xa + 1))); + EXPECT_EQ(One.multiply(Some), ConstantRange(APInt(16, 0xa*0xa), + APInt(16, 0xa*0xaa9 + 1))); + EXPECT_EQ(One.multiply(Wrap), Full); + EXPECT_EQ(Some.multiply(Some), Full); + EXPECT_EQ(Some.multiply(Wrap), Full); + EXPECT_EQ(Wrap.multiply(Wrap), Full); + + // http://llvm.org/PR4545 + EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply( + ConstantRange(APInt(4, 6), APInt(4, 2))), + ConstantRange(4, /*isFullSet=*/true)); +} + +TEST_F(ConstantRangeTest, UMax) { + EXPECT_EQ(Full.umax(Full), Full); + EXPECT_EQ(Full.umax(Empty), Empty); + EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); + EXPECT_EQ(Full.umax(Wrap), Full); + EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0))); + EXPECT_EQ(Empty.umax(Empty), Empty); + EXPECT_EQ(Empty.umax(Some), Empty); + EXPECT_EQ(Empty.umax(Wrap), Empty); + EXPECT_EQ(Empty.umax(One), Empty); + EXPECT_EQ(Some.umax(Some), Some); + EXPECT_EQ(Some.umax(Wrap), ConstantRange(APInt(16, 0xa), APInt(16, 0))); + EXPECT_EQ(Some.umax(One), Some); + // TODO: ConstantRange is currently over-conservative here. + EXPECT_EQ(Wrap.umax(Wrap), Full); + EXPECT_EQ(Wrap.umax(One), ConstantRange(APInt(16, 0xa), APInt(16, 0))); + EXPECT_EQ(One.umax(One), One); +} + +TEST_F(ConstantRangeTest, SMax) { + EXPECT_EQ(Full.smax(Full), Full); + EXPECT_EQ(Full.smax(Empty), Empty); + EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa), + APInt::getSignedMinValue(16))); + EXPECT_EQ(Full.smax(Wrap), Full); + EXPECT_EQ(Full.smax(One), ConstantRange(APInt(16, 0xa), + APInt::getSignedMinValue(16))); + EXPECT_EQ(Empty.smax(Empty), Empty); + EXPECT_EQ(Empty.smax(Some), Empty); + EXPECT_EQ(Empty.smax(Wrap), Empty); + EXPECT_EQ(Empty.smax(One), Empty); + EXPECT_EQ(Some.smax(Some), Some); + EXPECT_EQ(Some.smax(Wrap), ConstantRange(APInt(16, 0xa), + APInt(16, (uint64_t)INT16_MIN))); + EXPECT_EQ(Some.smax(One), Some); + EXPECT_EQ(Wrap.smax(One), ConstantRange(APInt(16, 0xa), + APInt(16, (uint64_t)INT16_MIN))); + EXPECT_EQ(One.smax(One), One); +} + +TEST_F(ConstantRangeTest, UDiv) { + EXPECT_EQ(Full.udiv(Full), Full); + EXPECT_EQ(Full.udiv(Empty), Empty); + EXPECT_EQ(Full.udiv(One), ConstantRange(APInt(16, 0), + APInt(16, 0xffff / 0xa + 1))); + EXPECT_EQ(Full.udiv(Some), ConstantRange(APInt(16, 0), + APInt(16, 0xffff / 0xa + 1))); + EXPECT_EQ(Full.udiv(Wrap), Full); + EXPECT_EQ(Empty.udiv(Empty), Empty); + EXPECT_EQ(Empty.udiv(One), Empty); + EXPECT_EQ(Empty.udiv(Some), Empty); + EXPECT_EQ(Empty.udiv(Wrap), Empty); + EXPECT_EQ(One.udiv(One), ConstantRange(APInt(16, 1))); + EXPECT_EQ(One.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 2))); + EXPECT_EQ(One.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xb))); + EXPECT_EQ(Some.udiv(Some), ConstantRange(APInt(16, 0), APInt(16, 0x111))); + EXPECT_EQ(Some.udiv(Wrap), ConstantRange(APInt(16, 0), APInt(16, 0xaaa))); + EXPECT_EQ(Wrap.udiv(Wrap), Full); +} + +} // anonymous namespace |
