From: Uros Bizjak <ubizjak@gmail.com>
To: Hongtao Liu <crazylht@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH]Don't use pinsr for struct initialization.
Date: Fri, 14 Aug 2020 11:57:18 +0200 [thread overview]
Message-ID: <CAFULd4bPLk+J4O=JTWHkGANV2W6c929HbKg6ihoReNUeoFpy6g@mail.gmail.com> (raw)
In-Reply-To: <CAMZc-bwNfCzuhFSDFOjmFsSyX1+bPtFA5gcZq55wy4tKw==mWQ@mail.gmail.com>
On Fri, Aug 14, 2020 at 8:03 AM Hongtao Liu <crazylht@gmail.com> wrote:
>
> Hi:
> For struct initialization, when it fits in a TImode, gcc will use
> pinsr insn which causes poor codegen described in PR93897 and PR96562.
You should probably remove TImode handling also from ix86_expand_pextr.
Uros.
> Bootstrap is ok, regression test is ok for i386/x86-64 backend.
> Ok for trunk?
>
> ChangeLog
> gcc/
> PR target/96562
> PR target/93897
> * config/i386/i386-expand.c (ix86_expand_pinsr): Don't use
> pinsr for TImode.
>
> gcc/testsuite/
> * gcc.target/i386/pr96562-1.c: New test.
>
> --
> BR,
> Hongtao
next prev parent reply other threads:[~2020-08-14 9:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-14 6:03 Hongtao Liu
2020-08-14 9:57 ` Uros Bizjak [this message]
2020-08-18 2:24 ` Hongtao Liu
2020-08-18 6:09 ` Uros Bizjak
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