From: Xi Ruoyao <xry111@xry111.site>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Jeff Law <jeffreyalaw@gmail.com>,
gcc-patches@gcc.gnu.org, chenglulu <chenglulu@loongson.cn>,
i@xen0n.name, xuchenghua@loongson.cn, c@jia.je
Subject: Re: [PATCH] middle-end: Call negate_rtx instead of simplify_gen_unary expanding rotate shift [PR113033]
Date: Tue, 19 Dec 2023 04:18:34 +0800 [thread overview]
Message-ID: <7c152ac060f19b3e666e376782036d5233c5d5fa.camel@xry111.site> (raw)
In-Reply-To: <ZYCod5F4cTUVSfqu@tucnak>
On Mon, 2023-12-18 at 21:15 +0100, Jakub Jelinek wrote:
>
> Then that seems like a bug in the loongarch vec_init pattern(s).
> Those really don't have a predicate in any of the backends on the input
> operand, so they need to force_reg it if it is something it can't handle.
> I've looked e.g. at i386 vec_init and that is exactly what it does,
> see the various tests + force_reg calls in ix86_expand_vector_init*.
Ok, I'm abandoning abandon this patch and I'll rework.
--
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University
prev parent reply other threads:[~2023-12-18 20:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-18 13:42 Xi Ruoyao
2023-12-18 15:39 ` Jeff Law
2023-12-18 16:48 ` Xi Ruoyao
2023-12-18 17:45 ` Jakub Jelinek
2023-12-18 20:01 ` Xi Ruoyao
2023-12-18 20:15 ` Jakub Jelinek
2023-12-18 20:18 ` Xi Ruoyao [this message]
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