https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105181
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Summary|[optimization] gcc generate |Store and load with
|worse code than clang base |updating the pointer is not
|on advanced simd |used as often as it should
| |be on aarch64
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is just an induction variable selection issue. Gcc decides using one is
better than using 3 where the store and loads do the update too.
This is most likely a cost model issue as ivopts does have some support for
these kinds of instructions.
