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From: Uros Bizjak <ubizjak@gmail.com>
Date: Fri, 2 Jul 2021 10:05:57 +0200
Message-ID: <CAFULd4aG3=x+wRMr35+zO8TfSoBKKpGfs=M39i8PZY7s7kz2yQ@mail.gmail.com>
Subject: Re: [PATCH] i386: Disable param ira-consider-dup-in-all-alts
 [PR100328]
To: "Kewen.Lin" <linkw@linux.ibm.com>
Cc: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
 Vladimir Makarov <vmakarov@redhat.com>, Hongtao Liu <crazylht@gmail.com>
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On Fri, Jul 2, 2021 at 4:28 AM Kewen.Lin <linkw@linux.ibm.com> wrote:
>
> Hi,
>
> With Hongtao's help (thanks), we got the SPEC2017 performance
> evaluation result on x86_64 (see [1]), this new parameter
> ira-consider-dup-in-all-alts has negative effects on i386.
> Since we observed it can benefit ports aarch64 and rs6000, the
> param is set as 1 by default, this patch is to disable it on
> i386 explicitly to avoid performance degradation there.
>
> Bootstrapped & regtested on x86_64-redhat-linux.
>
> Is it ok for trunk?

OK.

Thanks,
Uros.