changeset 46642:ec1179442657

8183570: Rework is_aligned_ to avoid multiple evaluation of the size expression Reviewed-by: tschatzl, kbarrett
author stefank
date Wed, 05 Jul 2017 12:51:28 +0200
parents f64dc604ef8d
children 1a4335135ffd
files hotspot/src/share/vm/utilities/align.hpp
diffstat 1 files changed, 1 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/hotspot/src/share/vm/utilities/align.hpp	Fri Jul 07 16:49:45 2017 +0000
+++ b/hotspot/src/share/vm/utilities/align.hpp	Wed Jul 05 12:51:28 2017 +0200
@@ -44,7 +44,7 @@
 
 #define align_up_(size, alignment) (align_down_((size) + align_mask(alignment), (alignment)))
 
-#define is_aligned_(size, alignment) ((size) == (align_up_((size), (alignment))))
+#define is_aligned_(size, alignment) (((size) & align_mask(alignment)) == 0)
 
 // Temporary declaration until this file has been restructured.
 template <typename T>