nks,
Philipp.
>
>
> Thanks,
> Di Zhao
>
>
> > -Original Message-----
> > From: Di Zhao OS
> > Sent: Friday, June 16, 2023 4:51 PM
> > To: gcc-patches@gcc.gnu.org
> > Subject: [PATCH] tree-optimization/110279- Check for nested FMA chains in
> >
1.3%
508.namd_r 1.58%
overall 0.42%
Thanks,
Di Zhao
> -Original Message-
> From: Di Zhao OS
> Sent: Friday, June 16, 2023 4:51 PM
> To: gcc-patches@gcc.gnu.org
> Subject: [PATCH] tree-optimization/110279- Check for nested FMA chains in
> reassoc
&
This patch is to fix the regressions found in SPEC2017 fprate cases
on aarch64.
1. Reused code in pass widening_mul to check for nested FMA chains
(those connected by MULT_EXPRs), since re-writing to parallel
generates worse codes.
2. Avoid re-arrange to produce less FMA chains that can be slo
