Clarify that the NextPowerOfTwo template is idempotent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107286 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 1 deletions

diff --git a/include/llvm/ADT/SmallPtrSet.h b/include/llvm/ADT/SmallPtrSet.h
index 2af9c0260d..5326d69bdf 100644
--- a/include/llvm/ADT/SmallPtrSet.h
+++ b/include/llvm/ADT/SmallPtrSet.h
@@ -200,7 +200,7 @@ public:
 };
 
 /// NextPowerOfTwo - This is a helper template that rounds N up to the next
-/// power of two.
+/// power of two (which means N itself if N is already a power of two).
 template<unsigned N>
 struct NextPowerOfTwo;