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llvm-svn: 174536

1 files changed, 6 insertions, 2 deletions

diff --git a/llvm/include/llvm/IR/Attributes.h b/llvm/include/llvm/IR/Attributes.h
index e73be5db22f..4aee10fab3d 100644
--- a/llvm/include/llvm/IR/Attributes.h
+++ b/llvm/include/llvm/IR/Attributes.h
@@ -185,8 +185,12 @@ public:
 
 //===----------------------------------------------------------------------===//
 /// \class
-/// \brief This class manages the ref count for the opaque AttributeSetImpl
-/// object and provides accessors for it.
+/// \brief This class holds the attributes for a function, its return value, and
+/// its parameters. You access the attributes for each of them via an index into
+/// the AttributeSet object. The function attributes are at index
+/// `AttributeSet::FunctionIndex', the return value is at index
+/// `AttributeSet::ReturnIndex', and the attributes for the parameters start at
+/// index `1'.
 class AttributeSet {
 public:
   enum AttrIndex {