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Remove __gcov_flush.

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PR gcov-profile/93623
	* tree-cfg.c (stmt_can_terminate_bb_p): Update comment to reflect
	reality.
	PR gcov-profile/93623
	* Makefile.in: Remove __gcov_flush.
	* gcov.h (__gcov_flush): Remove.
	* libgcov-interface.c (__gcov_flush): Remove.
	(init_mx): Use renamed mutex.
	(__gcov_lock): Likewise.
	(__gcov_unlock): Likewise.
	(__gcov_fork): Likewise.
	(__gcov_flush): Remove.
This commit is contained in:
Martin Liska 2020-05-05 16:15:47 +02:00
parent c0532db47d
commit 811b7636cb
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GPG Key ID: 4DC182DC0FA73785
6 changed files with 28 additions and 37 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2020-05-05 Martin Liska <mliska@suse.cz>
PR gcov-profile/93623
* tree-cfg.c (stmt_can_terminate_bb_p): Update comment to reflect
reality.
2020-05-05 Martin Liska <mliska@suse.cz>
* opt-functions.awk (opt_args_non_empty): New function.

4
gcc/tree-cfg.c
View File

@ -8439,8 +8439,8 @@ stmt_can_terminate_bb_p (gimple *t)
&& (call_flags & ECF_NOTHROW)
&& !(call_flags & ECF_RETURNS_TWICE)
/* fork() doesn't really return twice, but the effect of
wrapping it in __gcov_fork() which calls __gcov_flush()
and clears the counters before forking has the same
wrapping it in __gcov_fork() which calls __gcov_dump() and
__gcov_reset() and clears the counters before forking has the same
effect as returning twice. Force a fake edge. */
&& !fndecl_built_in_p (fndecl, BUILT_IN_FORK))
return false;

12
libgcc/ChangeLog
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@ -1,3 +1,15 @@
2020-05-05 Martin Liska <mliska@suse.cz>
PR gcov-profile/93623
* Makefile.in: Remove __gcov_flush.
* gcov.h (__gcov_flush): Remove.
* libgcov-interface.c (__gcov_flush): Remove.
(init_mx): Use renamed mutex.
(__gcov_lock): Likewise.
(__gcov_unlock): Likewise.
(__gcov_fork): Likewise.
(__gcov_flush): Remove.
2020-05-05 Martin Liska <mliska@suse.cz>
PR gcov-profile/93623

2
libgcc/Makefile.in
View File

@ -904,7 +904,7 @@ LIBGCOV_PROFILER = _gcov_interval_profiler \
_gcov_ior_profiler_atomic \
_gcov_indirect_call_profiler_v4 \
_gcov_time_profiler
LIBGCOV_INTERFACE = _gcov_dump _gcov_flush _gcov_fork \
LIBGCOV_INTERFACE = _gcov_dump _gcov_fork \
_gcov_execl _gcov_execlp \
_gcov_execle _gcov_execv _gcov_execvp _gcov_execve _gcov_reset \
_gcov_lock_unlock

5
libgcc/gcov.h
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@ -33,9 +33,4 @@ extern void __gcov_reset (void);
extern void __gcov_dump (void);
/* Write profile information to a file and reset counters to zero.
The function does operations under a mutex. */
extern void __gcov_flush (void);
#endif /* GCC_GCOV_H */

36
libgcc/libgcov-interface.c
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@ -28,10 +28,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#if defined(inhibit_libc)
#ifdef L_gcov_flush
void __gcov_flush (void) {}
#endif
#ifdef L_gcov_reset
void __gcov_reset (void) {}
#endif
@ -42,19 +38,19 @@ void __gcov_dump (void) {}
#else
extern __gthread_mutex_t __gcov_flush_mx ATTRIBUTE_HIDDEN;
extern __gthread_mutex_t __gcov_mx ATTRIBUTE_HIDDEN;
#ifdef L_gcov_lock_unlock
#ifdef __GTHREAD_MUTEX_INIT
__gthread_mutex_t __gcov_flush_mx = __GTHREAD_MUTEX_INIT;
__gthread_mutex_t __gcov_mx = __GTHREAD_MUTEX_INIT;
#define init_mx_once()
#else
__gthread_mutex_t __gcov_flush_mx;
__gthread_mutex_t __gcov_mx;
static void
init_mx (void)
{
__GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_flush_mx);
__GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_mx);
}
static void
@ -71,7 +67,7 @@ void
__gcov_lock (void)
{
init_mx_once ();
__gthread_mutex_lock (&__gcov_flush_mx);
__gthread_mutex_lock (&__gcov_mx);
}
/* Unlock critical section for __gcov_dump and __gcov_reset functions. */
@ -79,28 +75,10 @@ __gcov_lock (void)
void
__gcov_unlock (void)
{
__gthread_mutex_unlock (&__gcov_flush_mx);
__gthread_mutex_unlock (&__gcov_mx);
}
#endif
#ifdef L_gcov_flush
/* Called before fork or exec - write out profile information gathered so
far and reset it to zero. This avoids duplication or loss of the
profile information gathered so far. */
void
__gcov_flush (void)
{
__gcov_lock ();
__gcov_dump_int ();
__gcov_reset_int ();
__gcov_unlock ();
}
#endif /* L_gcov_flush */
#ifdef L_gcov_reset
/* Reset all counters to zero. */
@ -207,7 +185,7 @@ __gcov_fork (void)
pid = fork ();
if (pid == 0)
{
__GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_flush_mx);
__GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_mx);
/* We do not need locking as we are the only thread in the child. */
__gcov_reset_int ();
}