From: Michael Matz <matz@suse.de>
To: Denis Zaitsev <zzz@anda.ru>
Cc: gcc@gcc.gnu.org, linux-gcc@vger.kernel.org
Subject: Re: [new-ra] GCC-3.3.2/x86: some suspicious behaviour
Date: Thu, 8 Jul 2004 16:46:33 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.58.0407081644400.14966@wotan.suse.de> (raw)
In-Reply-To: <20040708040643.E17650@natasha.ward.six>
Hi,
On Thu, 8 Jul 2004, Denis Zaitsev wrote:
> So, what does these two commands mean:
>
>
> movl %ecx, 16(%esp)
> movl %esi, 20(%esp)
It means that the compiler wasn't able to optimize them away. They do no
harm. FWIW gcc 3.4 or the new-regalloc-branch don't have this problem.
> The result is the same for any -O >0 and for -Os. And the presence of
> these suspicious commands are not affected by the frame-pointer option.
Ciao,
Michael.
next prev parent reply other threads:[~2004-07-08 14:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-07 22:06 [new-ra] GCC-3.3.2/x86: some suspicious behaviour Denis Zaitsev
2004-07-08 14:46 ` Michael Matz [this message]
2004-07-08 16:31 ` Denis Zaitsev
2004-07-08 16:52 ` Paul Brook
2004-07-08 17:18 ` Denis Zaitsev
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