https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61605
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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Target| |x86_64-*-*
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andi Kleen from comment #1)
> This is in theory implemented in mainline with -fuse-caller-save
> It doesn't seem to work for me though. I also didn't see the option doing
> anything on a larger program.
Most likely because it is not fully implemented for x86 :).
