From: Jakub Jelinek <jakub@redhat.com>
To: Hongtao Liu <crazylht@gmail.com>
Cc: Uros Bizjak <ubizjak@gmail.com>, liuhongt <hongtao.liu@intel.com>,
"H.J. Lu" <hjl.tools@gmail.com>,
GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH] i386: Fix up @xorsign<mode>3_1 [PR102224]
Date: Wed, 8 Sep 2021 12:07:12 +0200 [thread overview]
Message-ID: <20210908100712.GT920497@tucnak> (raw)
In-Reply-To: <CAMZc-bxDOJa3A9qS+Xzk1mY1K=3HbQ1-3EV0YmqNXJLYvh49xw@mail.gmail.com>
On Wed, Sep 08, 2021 at 06:00:50PM +0800, Hongtao Liu wrote:
> And I find paradoxical subreg like (subreg:V4SF (reg:SF)) are not
> allowed by validate_subreg until r11-621.
My reading of the r11-621 change is that it allowed (subreg:V4SF (reg:V2SF) 0)
but that (subreg:V4SF (reg:SF) 0) has been valid even before that.
In any case, the PR89984 fix was a missed-optimization fix, so we don't need
to backport that and thus don't need to backport the follow-up patch either.
Jakub
next prev parent reply other threads:[~2021-09-08 10:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-08 7:42 Jakub Jelinek
2021-09-08 9:23 ` Hongtao Liu
2021-09-08 9:33 ` Jakub Jelinek
2021-09-08 10:00 ` Hongtao Liu
2021-09-08 10:02 ` Jakub Jelinek
2021-09-08 10:15 ` Hongtao Liu
2021-09-08 10:07 ` Jakub Jelinek [this message]
2021-09-14 0:57 ` Andrew Pinski
2021-09-14 2:06 ` Hongtao Liu
2021-09-14 2:18 ` Hongtao Liu
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