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* [Bug c++/107187] New: [feature request] Add `trivial_abi` attribute
@ 2022-10-08 22:28 nikolasklauser at berlin dot de
2022-10-08 22:34 ` [Bug c++/107187] " pinskia at gcc dot gnu.org
2022-10-08 22:37 ` pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: nikolasklauser at berlin dot de @ 2022-10-08 22:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107187
Bug ID: 107187
Summary: [feature request] Add `trivial_abi` attribute
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nikolasklauser at berlin dot de
Target Milestone: ---
This attribute is implemented by clang. It changes the calling convention of
non-trivial class types to be trivial for the purpose of calls (with some
caveats). libc++ has used it in the unstable ABI for some time now, and we'd
like to use it for new types in the stable ABI too, since it can improve
performance dramatically. I'm sure libstdc++ (and other libraries) will find it
useful too.
See https://quuxplusone.github.io/blog/2018/05/02/trivial-abi-101/ for a more
detailed explanation of it's benefits and drawbacks and
https://clang.llvm.org/docs/AttributeReference.html#trivial-abi for the clang
documentation.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/107187] [feature request] Add `trivial_abi` attribute
2022-10-08 22:28 [Bug c++/107187] New: [feature request] Add `trivial_abi` attribute nikolasklauser at berlin dot de
@ 2022-10-08 22:34 ` pinskia at gcc dot gnu.org
2022-10-08 22:37 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-10-08 22:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107187
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/107187] [feature request] Add `trivial_abi` attribute
2022-10-08 22:28 [Bug c++/107187] New: [feature request] Add `trivial_abi` attribute nikolasklauser at berlin dot de
2022-10-08 22:34 ` [Bug c++/107187] " pinskia at gcc dot gnu.org
@ 2022-10-08 22:37 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-10-08 22:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107187
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think a better way of implementing an abi specific attribute is in the shared
c++ abi forum and then have it accepted there too.
Then it could be the shared abi namespace like other c++ abi features are done.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-10-08 22:37 UTC | newest]
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2022-10-08 22:28 [Bug c++/107187] New: [feature request] Add `trivial_abi` attribute nikolasklauser at berlin dot de
2022-10-08 22:34 ` [Bug c++/107187] " pinskia at gcc dot gnu.org
2022-10-08 22:37 ` pinskia at gcc dot gnu.org
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