Date: Sat, 28 Jan 2017 17:46:04 +0000 (UTC) From: Olivier Houchard <cognet@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r312932 - head/sys/arm/include Message-ID: <201701281746.v0SHk4k2098251@repo.freebsd.org>
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Author: cognet Date: Sat Jan 28 17:46:04 2017 New Revision: 312932 URL: https://svnweb.freebsd.org/changeset/base/312932 Log: Use strexeq instead of needlessly branch. Suggested by: ian Modified: head/sys/arm/include/atomic-v6.h Modified: head/sys/arm/include/atomic-v6.h ============================================================================== --- head/sys/arm/include/atomic-v6.h Sat Jan 28 17:40:37 2017 (r312931) +++ head/sys/arm/include/atomic-v6.h Sat Jan 28 17:46:04 2017 (r312932) @@ -201,9 +201,8 @@ atomic_fcmpset_32(volatile uint32_t *p, "1: mov %0, #1 \n" " ldrex %1, [%2] \n" " cmp %1, %3 \n" - " it ne \n" - " bne 2f \n" - " strex %0, %4, [%2] \n" + " it eq \n" + " strexeq %0, %4, [%2] \n" "2:" : "=&r" (ret), "=&r" (tmp), "+r" (p), "+r" (_cmpval), "+r" (newval) : : "cc", "memory");
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