Fix TBAA information for reference accesses

This patch fixes clang to decorate reference accesses as pointers
and not as "omnipotent chars".

Differential Revision: https://reviews.llvm.org/D38074

llvm-svn: 314209
diff --git a/clang/lib/CodeGen/CodeGenTBAA.cpp b/clang/lib/CodeGen/CodeGenTBAA.cpp
index 8a75a55..3ae2956 100644
--- a/clang/lib/CodeGen/CodeGenTBAA.cpp
+++ b/clang/lib/CodeGen/CodeGenTBAA.cpp
@@ -145,10 +145,10 @@
   if (Ty->isStdByteType())
     return MetadataCache[Ty] = getChar();
 
-  // Handle pointers.
+  // Handle pointers and references.
   // TODO: Implement C++'s type "similarity" and consider dis-"similar"
   // pointers distinct.
-  if (Ty->isPointerType())
+  if (Ty->isPointerType() || Ty->isReferenceType())
     return MetadataCache[Ty] = createTBAAScalarType("any pointer",
                                                     getChar());