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Message-ID: <CAK1hOcO-YYjtPvgJO_DwfE0_t+EwYSxc4T+129Cg2i9sQAYh6A@mail.gmail.com>
Date: Tue, 24 Feb 2015 04:06:06 +0100
From: Denys Vlasenko <vda.linux@...glemail.com>
To: Rich Felker <dalias@...c.org>
Cc: musl <musl@...ts.openwall.com>
Subject: Re: Draft of improved memset.s for i386
On Tue, Feb 24, 2015 at 4:02 AM, Denys Vlasenko
<vda.linux@...glemail.com> wrote:
> On Tue, Feb 24, 2015 at 2:09 AM, Rich Felker <dalias@...c.org> wrote:
>> mov %edi,12(%esp)
>
> Shouldn't this be "mov 12(%esp),%edi"?
> It's a load of dst pointer from stack, right?
Erm... no it is not, 12(%esp) is size param.
Looks like this insn serves no purpose?
This will simply trash size param on stack,
since %edi is not initialized.
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