Move the Attributes::Builder outside of the Attributes class and into its own class named AttrBuilder. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp
index 9fe42f0..d8f374c 100644
--- a/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -212,7 +212,7 @@
     MadeChange = true;
 
     // Clear out any existing attributes.
-    Attributes::Builder B;
+    AttrBuilder B;
     B.addAttribute(Attributes::ReadOnly)
       .addAttribute(Attributes::ReadNone);
     F->removeAttribute(AttrListPtr::FunctionIndex,
@@ -357,7 +357,7 @@
 
   ArgumentGraph AG;
 
-  Attributes::Builder B;
+  AttrBuilder B;
   B.addAttribute(Attributes::NoCapture);
 
   // Check each function in turn, determining which pointer arguments are not