[llvm] r176301 - Don't add the 'Value' string if there isn't one.

[Bill Wendling]

Author: void
Date: Thu Feb 28 15:17:03 2013
New Revision: 176301

URL: http://llvm.org/viewvc/llvm-project?rev=176301&view=rev
Log:
Don't add the 'Value' string if there isn't one.

This was causing the folding set to fail to fold attributes, because it was
being calculated in one spot without an empty values string but here with an
empty values string.

Modified:
    llvm/trunk/lib/IR/AttributeImpl.h

Modified: llvm/trunk/lib/IR/AttributeImpl.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/AttributeImpl.h?rev=176301&r1=176300&r2=176301&view=diff
==============================================================================
--- llvm/trunk/lib/IR/AttributeImpl.h (original)
+++ llvm/trunk/lib/IR/AttributeImpl.h Thu Feb 28 15:17:03 2013
@@ -146,7 +146,7 @@ public:
   }
   static void Profile(FoldingSetNodeID &ID, StringRef Kind, StringRef Values) {
     ID.AddString(Kind);
-    ID.AddString(Values);
+    if (!Values.empty()) ID.AddString(Values);
   }
 
   // FIXME: Remove this!