Attributes Rewrite

Convert the internal representation of the Attributes class into a pointer to an
opaque object that's uniqued by and stored in the LLVMContext object. The
Attributes class then becomes a thin wrapper around this opaque
object. Eventually, the internal representation will be expanded to include
attributes that represent code generation options, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165917 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/IPO/GlobalOpt.cpp

@@ -2070,7 +2070,7 @@ static AttrListPtr StripNest(LLVMContext &C, const AttrListPtr &Attrs) {
       continue;
 
     // There can be only one.
-    return Attrs.removeAttr(C, Attrs.getSlot(i).Index, Attributes::get(B));
+    return Attrs.removeAttr(C, Attrs.getSlot(i).Index, Attributes::get(C, B));
   }
 
   return Attrs;