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* [Bug tree-optimization/45243] Non-volatile variables don't need to be constantly modified at -Os
[not found] <bug-45243-4@http.gcc.gnu.org/bugzilla/>
@ 2021-07-30 1:06 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-07-30 1:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45243
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Keywords| |missed-optimization
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/45243] Non-volatile variables don't need to be constantly modified at -Os
2010-08-09 23:06 [Bug c++/45243] New: Non-volatile variables don't need to be constantly modified msharov at users dot sourceforge dot net
2010-08-09 23:12 ` [Bug tree-optimization/45243] Non-volatile variables don't need to be constantly modified at -Os pinskia at gcc dot gnu dot org
@ 2010-08-10 8:58 ` rguenth at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-08-10 8:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2010-08-10 08:57 -------
The some reason is that loop header copying is not performed at -Os.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45243
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/45243] Non-volatile variables don't need to be constantly modified at -Os
2010-08-09 23:06 [Bug c++/45243] New: Non-volatile variables don't need to be constantly modified msharov at users dot sourceforge dot net
@ 2010-08-09 23:12 ` pinskia at gcc dot gnu dot org
2010-08-10 8:58 ` rguenth at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2010-08-09 23:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2010-08-09 23:12 -------
Works with -O2 which means LIM is not working at -Os for some reason.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|c++ |tree-optimization
Ever Confirmed|0 |1
GCC host triplet|x86_64-gnu-linux |
GCC target triplet| |x86_64-gnu-linux
Last reconfirmed|0000-00-00 00:00:00 |2010-08-09 23:12:13
date| |
Summary|Non-volatile variables don't|Non-volatile variables don't
|need to be constantly |need to be constantly
|modified |modified at -Os
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45243
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-07-30 1:06 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-45243-4@http.gcc.gnu.org/bugzilla/>
2021-07-30 1:06 ` [Bug tree-optimization/45243] Non-volatile variables don't need to be constantly modified at -Os pinskia at gcc dot gnu.org
2010-08-09 23:06 [Bug c++/45243] New: Non-volatile variables don't need to be constantly modified msharov at users dot sourceforge dot net
2010-08-09 23:12 ` [Bug tree-optimization/45243] Non-volatile variables don't need to be constantly modified at -Os pinskia at gcc dot gnu dot org
2010-08-10 8:58 ` rguenth at gcc dot gnu dot org
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