[PATCH] D11394: Fix warnings about pessimizing return moves for C++11 and higher

[Marshall Clow]

mclow.lists added inline comments.

================
Comment at: include/__config:724
@@ -719,1 +723,3 @@
+#endif
+
 #ifndef _LIBCPP_HAS_NO_ASAN
----------------
I think that this needs more exploration; someone needs to look at the codegen.

     return x;

is different from:

     return (x);   // this is an expression

I suspect that only one will trigger RVO.



http://reviews.llvm.org/D11394