[CodeGen] Decorate aggregate accesses with TBAA tags

Differential Revision: https://reviews.llvm.org/D41539

llvm-svn: 323421
diff --git a/clang/lib/CodeGen/CodeGenTBAA.h b/clang/lib/CodeGen/CodeGenTBAA.h
index a5b1f66..c3e5c30 100644
--- a/clang/lib/CodeGen/CodeGenTBAA.h
+++ b/clang/lib/CodeGen/CodeGenTBAA.h
@@ -201,6 +201,11 @@
   /// purpose of conditional operator.
   TBAAAccessInfo mergeTBAAInfoForConditionalOperator(TBAAAccessInfo InfoA,
                                                      TBAAAccessInfo InfoB);
+
+  /// mergeTBAAInfoForMemoryTransfer - Get merged TBAA information for the
+  /// purpose of memory transfer calls.
+  TBAAAccessInfo mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo,
+                                                TBAAAccessInfo SrcInfo);
 };
 
 }  // end namespace CodeGen