Author: mjg
Date: Tue Jul 28 07:04:46 2020
New Revision: 363633
URL: https://svnweb.freebsd.org/changeset/base/363633
Log:
MFC r363242:
amd64: patch ffsl to use the compiler builtin
Modified:
stable/12/sys/amd64/include/cpufunc.h
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/amd64/include/cpufunc.h
==============================================================================
--- stable/12/sys/amd64/include/cpufunc.h Tue Jul 28 04:58:01 2020
(r363632)
+++ stable/12/sys/amd64/include/cpufunc.h Tue Jul 28 07:04:46 2020
(r363633)
@@ -167,7 +167,8 @@ enable_intr(void)
static __inline __pure2 int
ffsl(long mask)
{
- return (mask == 0 ? mask : (int)bsfq((u_long)mask) + 1);
+
+ return (__builtin_ffsl(mask));
}
#define HAVE_INLINE_FFSLL
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