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From:	Richard Sandiford <rsandifo@nildram.co.uk>
To:	"Maciej W. Rozycki" <macro@linux-mips.org>
Mail-Followup-To: "Maciej W. Rozycki" <macro@linux-mips.org>,
	Nigel Stephens <nigel@mips.com>,
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Cc:	Nigel Stephens <nigel@mips.com>,
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	Ralf Baechle <ralf@linux-mips.org>,
	Thiemo Seufer <ths@networkno.de>, linux-mips@linux-mips.org
Subject: Re: [SPAM?]  Re: [PATCH] mm/pg-r4k.c: Dump the generated code
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Date:	Sat, 13 Oct 2007 11:53:21 +0100
In-Reply-To: <Pine.LNX.4.64N.0710111242530.16370@blysk.ds.pg.gda.pl> (Maciej
	W. Rozycki's message of "Thu\, 11 Oct 2007 13\:01\:26 +0100 \(BST\)")
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"Maciej W. Rozycki" <macro@linux-mips.org> writes:
> On Wed, 10 Oct 2007, Nigel Stephens wrote:
>> Actually the -march=4ksd option will allow gcc to use of the SmartMIPS lwxs
>> (indexed load) instruction, which could save a few instructions here and
>> there.
>
>  Good point, but if we decide the lone instruction is worth the hassle, 
> then we should use "-msmartmips" on top of the base ISA selection.  
> Likewise with "lwx" and "-mdsp".

For the record, although that's true of SDE, it isn't (yet) true of
FSF GCC; you need -msmartmips for that.

Richard