linux-kernel - Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization

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Message-ID: <20070624232314.GA971@kvack.org>
Date:	Sun, 24 Jun 2007 19:23:14 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Oleg Verych <olecom@...wer.upol.cz>, rae l <crquan@...il.com>,
	trivial@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] trivial: the memset operation on a automatic array variable should be optimized out by data initialization

On Sun, Jun 24, 2007 at 03:15:17PM -0700, Arjan van de Ven wrote:
> we should just alias our memset to the __builtin one, and then provide a
> generic one from lib/ for the cases gcc needs to do a fallback.

The last time I checked, gcc generated horrible badly performing code for 
builtin memset/memcpy() when -Os is specified.

		-ben
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