Re: [PATCH] xtensa: Turn on -fsplit-wide-types-early by default

[Max Filippov <jcmvbkbc@gmail.com>]

On Sun, Aug 14, 2022 at 2:31 AM Takayuki 'January June' Suwa
<jjsuwa_sys3175@yahoo.co.jp> wrote:
>
> Since GCC10, the "subreg2" optimization pass was no longer tied to enabling
> "subreg1" unless -fsplit-wide-types-early was turned on (PR88233).  However
> on the Xtensa port, the lack of "subreg2" can degrade the quality of the
> output code, especially for those that produce many D[FC]mode pseudos.
>
> This patch turns on -fsplit-wide-types-early by default in order to restore
> the previous behavior.
>
> gcc/ChangeLog:
>
>         * common/config/xtensa/xtensa-common.cc
>         (xtensa_option_optimization_table): Add OPT_fsplit_wide_types_early
>         for OPT_LEVELS_ALL in order to restore pre-GCC10 behavior.
> ---
>  gcc/common/config/xtensa/xtensa-common.cc | 2 ++
>  1 file changed, 2 insertions(+)

Regtested for target=xtensa-linux-uclibc, no new regressions.
Committed to master.

-- 
Thanks.
-- Max