Use the number of 'slots' in the AttributeSetImpl being 0 to indicate that the AttributeSet is empty.

llvm-svn: 173962

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/include/llvm/IR/Attributes.h b/llvm/include/llvm/IR/Attributes.h
index 5ebb6296cd6..a1da4470d03 100644
--- a/llvm/include/llvm/IR/Attributes.h
+++ b/llvm/include/llvm/IR/Attributes.h
@@ -308,7 +308,7 @@ public:
 
   /// \brief Return true if there are no attributes.
   bool isEmpty() const {
-    return pImpl == 0;
+    return getNumSlots() == 0;
   }
 
   /// \brief Return the number of slots used in this attribute list.  This is