[Bug target/121970] struct copy still use zmm even specify -mmove-max=256

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121970

--- Comment #7 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
(In reply to Hongtao Liu from comment #6)
> > > 
> > > So this seems like a target issue.
> > 
> > Ah, I see, thanks.
> > 
> > H.J, I think we should remove ix86_store_max from MOVE_MAX.
> 
> It failed pieces-memset-46.c since 
> 
> m_align is decided by MOVE_MAX_PIECES for memset, hmm.

So the actual size used by memset is MIN (MOVE_MAX_PIECES, STORE_MAX_PIECES)