Added support for the Builtin attribute.

The Builtin attribute is an attribute that can be placed on function call site that signal that even though a function is declared as being a builtin,

rdar://problem/13727199

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185049 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp
index 1660347..39ec965 100644
--- a/lib/Analysis/MemoryBuiltins.cpp
+++ b/lib/Analysis/MemoryBuiltins.cpp
@@ -77,7 +77,7 @@
   if (!CS.getInstruction())
     return 0;
 
-  if (CS.hasFnAttr(Attribute::NoBuiltin))
+  if (CS.isNoBuiltin())
     return 0;
 
   Function *Callee = CS.getCalledFunction();