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