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Allow PointerIntPairs to be created from const void *.
For a measure of safety, this conversion is only permitted if the stored pointer type can also be created from a const void *. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160456 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -109,6 +109,13 @@ public:
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PointerIntPair P; P.setFromOpaqueValue(V); return P;
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}
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// Allow PointerIntPairs to be created from const void * if and only if the
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// pointer type could be created from a const void *.
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static PointerIntPair getFromOpaqueValue(const void *V) {
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(void)PtrTraits::getFromVoidPointer(V);
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return getFromOpaqueValue(const_cast<void *>(V));
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}
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bool operator==(const PointerIntPair &RHS) const {return Value == RHS.Value;}
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bool operator!=(const PointerIntPair &RHS) const {return Value != RHS.Value;}
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bool operator<(const PointerIntPair &RHS) const {return Value < RHS.Value;}
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@ -158,6 +165,10 @@ public:
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getFromVoidPointer(void *P) {
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return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P);
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}
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static inline PointerIntPair<PointerTy, IntBits, IntType>
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getFromVoidPointer(const void *P) {
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return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P);
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}
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enum {
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NumLowBitsAvailable = PtrTraits::NumLowBitsAvailable - IntBits
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};
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