https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98737
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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Attachment #50058|0 |1
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 51997
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51997&action=edit
gcc12-pr98737.patch
Updated patch which uses internal fn and optabs for this.
Only the *_fetch and not fetch_* atomics are handled though.
For the latter, I wonder if we instead just shouldn't generally try to replace
__atomic_fetch_add (&x, y, whatever) + y with __atomic_add_fetch (&x, y,
whatever) and __atomic_add_fetch (&x, y, whatever) - y with __atomic_fetch_add
(&x, y, whatever) etc.
