X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FAnalysis%2FMemoryBuiltins.h;h=63262eb9a36473d56d4dd2fdacfb3ead0cb48944;hb=ec3bb4b660fc2f8353c510ebfc15277bcf28df8b;hp=2a9cd75ee78ddbcfab045a7421b2331a9174d313;hpb=29eb2cc00ca0bc4d218c6d034f90becfed999bcb;p=oota-llvm.git

diff --git a/include/llvm/Analysis/MemoryBuiltins.h b/include/llvm/Analysis/MemoryBuiltins.h
index 2a9cd75ee78..63262eb9a36 100644
--- a/include/llvm/Analysis/MemoryBuiltins.h
+++ b/include/llvm/Analysis/MemoryBuiltins.h
@@ -138,12 +138,22 @@ static inline CallInst *isFreeCall(Value *I, const TargetLibraryInfo *TLI) {
 //
 
 /// \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;