diff options
| -rw-r--r-- | include/llvm/ADT/PointerIntPair.h | 7 | ||||
| -rw-r--r-- | include/llvm/ADT/PointerUnion.h | 12 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/llvm/ADT/PointerIntPair.h b/include/llvm/ADT/PointerIntPair.h index 64f4a7cee4..85dbba2b4a 100644 --- a/include/llvm/ADT/PointerIntPair.h +++ b/include/llvm/ADT/PointerIntPair.h @@ -91,6 +91,13 @@ public: Value |= IntVal << IntShift; // Set new integer. } + PointerTy const *getAddrOfPointer() const { + assert(Value == reinterpret_cast<intptr_t>(getPointer()) && + "Can only return the address if IntBits is cleared and " + "PtrTraits doesn't change the pointer"); + return reinterpret_cast<PointerTy const *>(&Value); + } + void *getOpaqueValue() const { return reinterpret_cast<void*>(Value); } void setFromOpaqueValue(void *Val) { Value = reinterpret_cast<intptr_t>(Val);} diff --git a/include/llvm/ADT/PointerUnion.h b/include/llvm/ADT/PointerUnion.h index 3a514b5626..61de042b0f 100644 --- a/include/llvm/ADT/PointerUnion.h +++ b/include/llvm/ADT/PointerUnion.h @@ -107,6 +107,18 @@ namespace llvm { if (is<T>()) return get<T>(); return T(); } + + /// \brief If the union is set to the first pointer type we can get an + /// address pointing to it. + template <typename T> + PT1 const *getAddrOf() const { + assert(is<PT1>() && "Val is not the first pointer"); + assert(get<PT1>() == Val.getPointer() && + "Can't get the address because PointerLikeTypeTraits changes the ptr"); + T const *can_only_get_address_of_first_pointer_type + = reinterpret_cast<PT1 const *>(Val.getAddrOfPointer()); + return can_only_get_address_of_first_pointer_type; + } /// Assignment operators - Allow assigning into this union from either /// pointer type, setting the discriminator to remember what it came from. |