unittests/Support/ConstantRangeTest.cpp - llvm - Git at Google

 //===- 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_TRUE(Empty.intersectWith(Full).isEmptySet());
   EXPECT_TRUE(Empty.intersectWith(Empty).isEmptySet());
   EXPECT_TRUE(Empty.intersectWith(One).isEmptySet());
   EXPECT_TRUE(Empty.intersectWith(Some).isEmptySet());
   EXPECT_TRUE(Empty.intersectWith(Wrap).isEmptySet());
   EXPECT_TRUE(Full.intersectWith(Full).isFullSet());
   EXPECT_TRUE(Some.intersectWith(Some) == Some);
   EXPECT_TRUE(Some.intersectWith(One) == One);
   EXPECT_TRUE(Full.intersectWith(One) == One);
   EXPECT_TRUE(Full.intersectWith(Some) == Some);
   EXPECT_TRUE(Some.intersectWith(Wrap).isEmptySet());
   EXPECT_TRUE(One.intersectWith(Wrap).isEmptySet());
   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_EQ(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_TRUE(Empty.unionWith(Empty).isEmptySet());
   EXPECT_TRUE(Full.unionWith(Full).isFullSet());
   EXPECT_TRUE(Some.unionWith(Wrap).isFullSet());

   // 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_TRUE(Full.subtract(APInt(16, 4)).isFullSet());
   EXPECT_TRUE(Empty.subtract(APInt(16, 4)).isEmptySet());
   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_TRUE(Full.add(APInt(16, 4)).isFullSet());
   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_TRUE(Empty.add(APInt(16, 4)).isEmptySet());
   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_TRUE(One.multiply(Wrap).isFullSet());
   EXPECT_TRUE(Some.multiply(Some).isFullSet());
   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_TRUE(Full.umax(Full).isFullSet());
   EXPECT_TRUE(Full.umax(Empty).isEmptySet());
   EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
   EXPECT_TRUE(Full.umax(Wrap).isFullSet());
   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_TRUE(Full.smax(Full).isFullSet());
   EXPECT_TRUE(Full.smax(Empty).isEmptySet());
   EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
                              APInt::getSignedMinValue(16)));
   EXPECT_TRUE(Full.smax(Wrap).isFullSet());
   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
	//===- 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_TRUE(Empty.intersectWith(Full).isEmptySet());
	EXPECT_TRUE(Empty.intersectWith(Empty).isEmptySet());
	EXPECT_TRUE(Empty.intersectWith(One).isEmptySet());
	EXPECT_TRUE(Empty.intersectWith(Some).isEmptySet());
	EXPECT_TRUE(Empty.intersectWith(Wrap).isEmptySet());
	EXPECT_TRUE(Full.intersectWith(Full).isFullSet());
	EXPECT_TRUE(Some.intersectWith(Some) == Some);
	EXPECT_TRUE(Some.intersectWith(One) == One);
	EXPECT_TRUE(Full.intersectWith(One) == One);
	EXPECT_TRUE(Full.intersectWith(Some) == Some);
	EXPECT_TRUE(Some.intersectWith(Wrap).isEmptySet());
	EXPECT_TRUE(One.intersectWith(Wrap).isEmptySet());
	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_EQ(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_TRUE(Empty.unionWith(Empty).isEmptySet());
	EXPECT_TRUE(Full.unionWith(Full).isFullSet());
	EXPECT_TRUE(Some.unionWith(Wrap).isFullSet());

	// 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_TRUE(Full.subtract(APInt(16, 4)).isFullSet());
	EXPECT_TRUE(Empty.subtract(APInt(16, 4)).isEmptySet());
	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_TRUE(Full.add(APInt(16, 4)).isFullSet());
	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_TRUE(Empty.add(APInt(16, 4)).isEmptySet());
	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_TRUE(One.multiply(Wrap).isFullSet());
	EXPECT_TRUE(Some.multiply(Some).isFullSet());
	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_TRUE(Full.umax(Full).isFullSet());
	EXPECT_TRUE(Full.umax(Empty).isEmptySet());
	EXPECT_EQ(Full.umax(Some), ConstantRange(APInt(16, 0xa), APInt(16, 0)));
	EXPECT_TRUE(Full.umax(Wrap).isFullSet());
	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_TRUE(Full.smax(Full).isFullSet());
	EXPECT_TRUE(Full.smax(Empty).isEmptySet());
	EXPECT_EQ(Full.smax(Some), ConstantRange(APInt(16, 0xa),
	APInt::getSignedMinValue(16)));
	EXPECT_TRUE(Full.smax(Wrap).isFullSet());
	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