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* [Bug middle-end/45090] x86_64 passing structure by value to a non-inlined function causes register-resident structures to flush to stack
[not found] <bug-45090-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-05 21:58 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-05 21:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45090
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Target Milestone|--- |4.7.0
Known to work| |4.7.1, 4.9.1, 5.1.0
Keywords| |missed-optimization
Known to fail| |4.6.4
Resolution|--- |FIXED
Severity|normal |enhancement
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed since GCC 4.7.0 by r0-107261.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/45090] x86_64 passing structure by value to a non-inlined function causes register-resident structures to flush to stack
2010-07-26 21:15 [Bug c++/45090] New: " dickie at acm dot org
@ 2010-07-26 21:24 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2010-07-26 21:24 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2010-07-26 21:24 -------
I think this is correct behavior dealing with how x86_64 ABI describes struct
passing and almost all registers are volatile.
Oh on the trunk test3 gets compiled into a simple loop without any struct being
saved and that is a different issue with the movl, see PR 20408.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |middle-end
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45090
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-45090-4@http.gcc.gnu.org/bugzilla/>
2021-08-05 21:58 ` [Bug middle-end/45090] x86_64 passing structure by value to a non-inlined function causes register-resident structures to flush to stack pinskia at gcc dot gnu.org
2010-07-26 21:15 [Bug c++/45090] New: " dickie at acm dot org
2010-07-26 21:24 ` [Bug middle-end/45090] " pinskia at gcc dot gnu dot org
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