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* [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor
[not found] <bug-84411-4@http.gcc.gnu.org/bugzilla/>
@ 2021-12-25 12:16 ` pinskia at gcc dot gnu.org
2024-03-16 23:18 ` pinskia at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-12-25 12:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84411
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor
[not found] <bug-84411-4@http.gcc.gnu.org/bugzilla/>
2021-12-25 12:16 ` [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor pinskia at gcc dot gnu.org
@ 2024-03-16 23:18 ` pinskia at gcc dot gnu.org
2024-03-16 23:18 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-03-16 23:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84411
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |19661
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-03-16
Ever confirmed|0 |1
CC| |pinskia at gcc dot gnu.org
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This depends on PR 19661.
But then we still need to remove:
<bb 2> [local count: 1073741824]:
_1 = __atomic_load_1 (&_ZGVZ8get_basevE1d, 2);
if (_1 == 0)
goto <bb 4>; [33.00%]
else
goto <bb 3>; [67.00%]
<bb 3> [local count: 956811341]:
goto <bb 6>; [100.00%]
<bb 4> [local count: 354334800]:
_2 = __cxa_guard_acquire (&_ZGVZ8get_basevE1d);
if (_2 != 0)
goto <bb 5>; [33.00%]
else
goto <bb 3>; [67.00%]
<bb 5> [local count: 116930483]:
__cxa_guard_release (&_ZGVZ8get_basevE1d);
Note clang/LLVM does not remove the use of the guard here either, even though
it does remove the __cxa_atexit.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19661
[Bug 19661] unnecessary atexit calls emitted for static objects with empty
destructors
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor
[not found] <bug-84411-4@http.gcc.gnu.org/bugzilla/>
2021-12-25 12:16 ` [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor pinskia at gcc dot gnu.org
2024-03-16 23:18 ` pinskia at gcc dot gnu.org
@ 2024-03-16 23:18 ` pinskia at gcc dot gnu.org
2024-03-17 0:05 ` pinskia at gcc dot gnu.org
2024-05-07 21:47 ` pinskia at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-03-16 23:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84411
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |barry.revzin at gmail dot com
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 109268 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor
[not found] <bug-84411-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2024-03-16 23:18 ` pinskia at gcc dot gnu.org
@ 2024-03-17 0:05 ` pinskia at gcc dot gnu.org
2024-05-07 21:47 ` pinskia at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-03-17 0:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84411
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |antoshkka at gmail dot com
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 87831 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor
[not found] <bug-84411-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2024-03-17 0:05 ` pinskia at gcc dot gnu.org
@ 2024-05-07 21:47 ` pinskia at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-05-07 21:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84411
Bug 84411 depends on bug 19661, which changed state.
Bug 19661 Summary: unnecessary atexit calls emitted for static objects with empty destructors
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19661
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <bug-84411-4@http.gcc.gnu.org/bugzilla/>
2021-12-25 12:16 ` [Bug c++/84411] Missed optimization: static guard variable generated for empty virtual destructor pinskia at gcc dot gnu.org
2024-03-16 23:18 ` pinskia at gcc dot gnu.org
2024-03-16 23:18 ` pinskia at gcc dot gnu.org
2024-03-17 0:05 ` pinskia at gcc dot gnu.org
2024-05-07 21:47 ` pinskia at gcc dot gnu.org
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