8183570: Rework is_aligned_ to avoid multiple evaluation of the size expression
Reviewed-by: tschatzl, kbarrett
--- 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>