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Fix PointerIntPair so that it can use an enum class as its integer template argument.
Summary: The problem here is that an enum class can not be implicitly converted to an integer. That assumption snuck back into PointerIntPair. This commit fixes the issue and more importantly adds some unittests to make sure that we do not break this again. rdar://23594806 Reviewers: gribozavr Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D16131 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257574 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -55,20 +55,25 @@ public:
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PointerTy getPointer() const { return Info::getPointer(Value); }
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IntType getInt() const { return (IntType)Info::getInt(Value); }
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IntType getInt() const {
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return (IntType)Info::getInt(Value);
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}
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void setPointer(PointerTy PtrVal) {
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Value = Info::updatePointer(Value, PtrVal);
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}
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void setInt(IntType IntVal) { Value = Info::updateInt(Value, IntVal); }
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void setInt(IntType IntVal) {
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Value = Info::updateInt(Value, static_cast<intptr_t>(IntVal));
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}
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void initWithPointer(PointerTy PtrVal) {
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Value = Info::updatePointer(0, PtrVal);
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}
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void setPointerAndInt(PointerTy PtrVal, IntType IntVal) {
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Value = Info::updateInt(Info::updatePointer(0, PtrVal), IntVal);
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Value = Info::updateInt(Info::updatePointer(0, PtrVal),
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static_cast<intptr_t>(IntVal));
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}
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PointerTy const *getAddrOfPointer() const {
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@ -35,6 +35,33 @@ TEST(PointerIntPairTest, GetSet) {
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Pair.setPointerAndInt(&s, 3U);
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EXPECT_EQ(&s, Pair.getPointer());
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EXPECT_EQ(3U, Pair.getInt());
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// Make sure that we can perform all of our operations on enum classes.
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//
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// The concern is that enum classes are only explicitly convertible to
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// integers. This means that if we assume in PointerIntPair this, a
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// compilation error will result. This group of tests exercises the enum class
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// code to make sure that we do not run into such issues in the future.
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enum class E : unsigned {
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Case1,
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Case2,
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Case3,
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};
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PointerIntPair<S *, 2, E> Pair2(&s, E::Case1);
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EXPECT_EQ(&s, Pair2.getPointer());
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EXPECT_EQ(E::Case1, Pair2.getInt());
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Pair2.setInt(E::Case2);
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EXPECT_EQ(&s, Pair2.getPointer());
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EXPECT_EQ(E::Case2, Pair2.getInt());
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Pair2.setPointer(nullptr);
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EXPECT_EQ(nullptr, Pair2.getPointer());
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EXPECT_EQ(E::Case2, Pair2.getInt());
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Pair2.setPointerAndInt(&s, E::Case3);
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EXPECT_EQ(&s, Pair2.getPointer());
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EXPECT_EQ(E::Case3, Pair2.getInt());
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}
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TEST(PointerIntPairTest, DefaultInitialize) {
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