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2004-03-23  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/lowlevellock.h (lll_mutex_trylock):
	Remove unnecessary setne instruction.
This commit is contained in:
Ulrich Drepper 2004-03-23 08:39:26 +00:00
parent 81562526a2
commit 16b06b70b5
2 changed files with 7 additions and 2 deletions
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5
nptl/ChangeLog
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@ -1,3 +1,8 @@
2004-03-23 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/lowlevellock.h (lll_mutex_trylock):
Remove unnecessary setne instruction.
2004-03-22 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/pthread_getaffinity.c

4
nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
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@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -104,7 +104,7 @@ extern int __lll_mutex_unlock_wake (int *__futex)
#define lll_mutex_trylock(futex) \
({ unsigned char ret; \
__asm __volatile (LOCK_INSTR "cmpxchgl %2, %1; setne %0" \
__asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
: "=a" (ret), "=m" (futex) \
: "r" (LLL_MUTEX_LOCK_INITIALIZER_LOCKED), "m" (futex),\
"0" (LLL_MUTEX_LOCK_INITIALIZER) \