https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94986
Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #3 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to nsz from comment #2)
> on arm the -pg abi is
>
> func:
> push {lr}
> bl _gnu_mcount_nc
> ...
>
> so no frame pointer is involved, -pg implying
> -fno-omit-frame-pointer is a historical mistake i think
> (because some targets required fp for -pg, but most don't).
Right, so the claim that -pg implies -fno-omit-frame-pointer is wrong, and that
means there is no bug in GCC. Looking at the latest docs, there is no mention
of frame pointer for the -pg option, and neither does -fomit-frame-pointer
discuss -pg. So this dependency must have been removed some time ago.
> ideally r7 clobber would just work with -pg -fomit-frame-pointer.
> the alloca problem is a separate issue (that r7 clobber may not
> work with alloca).
GCC correctly reports the error for that. So this can be closed then.
