//
/// \brief Compute the size of the object pointed by Ptr. Returns true and the
-/// object size in Size if successful, and false otherwise.
+/// object size in Size if successful, and false otherwise. In this context, by
+/// object we mean the region of memory starting at Ptr to the end of the
+/// underlying object pointed to by Ptr.
/// If RoundToAlign is true, then Size is rounded up to the aligment of allocas,
/// byval arguments, and global variables.
bool getObjectSize(const Value *Ptr, uint64_t &Size, const DataLayout *TD,
const TargetLibraryInfo *TLI, bool RoundToAlign = false);
+/// \brief Compute the size of the underlying object pointed by Ptr. Returns
+/// true and the object size in Size if successful, and false otherwise.
+/// If RoundToAlign is true, then Size is rounded up to the aligment of allocas,
+/// byval arguments, and global variables.
+bool getUnderlyingObjectSize(const Value *Ptr, uint64_t &Size,
+ const DataLayout *TD, const TargetLibraryInfo *TLI,
+ bool RoundToAlign = false);
+
typedef std::pair<APInt, APInt> SizeOffsetType;