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Allow getting the address of the value in a PointerUnion or PointerIntPair if one is
confident enough that he knows what he is doing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126019 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -91,6 +91,13 @@ public:
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Value |= IntVal << IntShift; // Set new integer.
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Value |= IntVal << IntShift; // Set new integer.
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}
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}
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PointerTy const *getAddrOfPointer() const {
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assert(Value == reinterpret_cast<intptr_t>(getPointer()) &&
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"Can only return the address if IntBits is cleared and "
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"PtrTraits doesn't change the pointer");
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return reinterpret_cast<PointerTy const *>(&Value);
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}
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void *getOpaqueValue() const { return reinterpret_cast<void*>(Value); }
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void *getOpaqueValue() const { return reinterpret_cast<void*>(Value); }
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void setFromOpaqueValue(void *Val) { Value = reinterpret_cast<intptr_t>(Val);}
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void setFromOpaqueValue(void *Val) { Value = reinterpret_cast<intptr_t>(Val);}
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@ -107,6 +107,18 @@ namespace llvm {
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if (is<T>()) return get<T>();
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if (is<T>()) return get<T>();
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return T();
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return T();
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}
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}
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/// \brief If the union is set to the first pointer type we can get an
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/// address pointing to it.
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template <typename T>
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PT1 const *getAddrOf() const {
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assert(is<PT1>() && "Val is not the first pointer");
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assert(get<PT1>() == Val.getPointer() &&
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"Can't get the address because PointerLikeTypeTraits changes the ptr");
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T const *can_only_get_address_of_first_pointer_type
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= reinterpret_cast<PT1 const *>(Val.getAddrOfPointer());
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return can_only_get_address_of_first_pointer_type;
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}
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/// Assignment operators - Allow assigning into this union from either
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/// Assignment operators - Allow assigning into this union from either
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/// pointer type, setting the discriminator to remember what it came from.
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/// pointer type, setting the discriminator to remember what it came from.
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