linux-kernel - Re: [PATCH] LoongArch: Improve memory ops

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Message-ID: <c90c442fe029bfb9c4487284366800b8781954e1.camel@xry111.site>
Date:   Mon, 10 Apr 2023 20:20:01 +0800
From:   Xi Ruoyao <xry111@...111.site>
To:     WANG rui <wangrui@...ngson.cn>,
        Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <kernel@...0n.name>
Cc:     loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
        loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH] LoongArch: Improve memory ops

On Mon, 2023-04-10 at 19:57 +0800, WANG rui wrote:
> +       /* align up address */
> +       andi    t1, a0, 7
> +       sub.d   a0, a0, t1

bstrins.d a0, zero, 2, 0

Likewise for other aligning operations if the temporary is not used.

> +       addi.d  a0, a0, 8

-- 
Xi Ruoyao <xry111@...111.site>
School of Aerospace Science and Technology, Xidian University