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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176301 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/IR/AttributeImpl.h b/lib/IR/AttributeImpl.h
index cb2c55c..ad2670d 100644 (file)
--- a/lib/IR/AttributeImpl.h
+++ b/lib/IR/AttributeImpl.h
@@ -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!