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From: "nikolasklauser at berlin dot de" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/107187] New: [feature request] Add `trivial_abi` attribute Date: Sat, 08 Oct 2022 22:28:26 +0000 [thread overview] Message-ID: <bug-107187-4@http.gcc.gnu.org/bugzilla/> (raw) 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.
next reply other threads:[~2022-10-08 22:28 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-10-08 22:28 nikolasklauser at berlin dot de [this message] 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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