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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/109858] [14 Regression] r14-172 caused some
 SPEC2017 bmk to degrade on Power
Date: Wed, 17 May 2023 01:25:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109858

--- Comment #8 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Segher Boessenkool from comment #7)
> > The patch will still use GENERAL_REGS when hard_regno_mode_ok for mode =
and
> > GENERAL_REGS(which is the case in PR109610), hope it can also fix this
> > regression.
>=20
> That sounds more reasonable.  But, why use any heuristics like this?  Can=
't
> you
> just look at the actual costs of using mem and regs?

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109610#c2=