Re: f@#$ing MMX emulator

Anthony Barbachan (barbacha@trill.cis.fordham.edu)
Fri, 19 Jun 1998 21:34:51 -0400


-----Original Message-----
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: David Burrows <snadge@gemcorp.com.au>
Cc: linux-kernel@vger.rutgers.edu <linux-kernel@vger.rutgers.edu>
Date: Thursday, June 18, 1998 9:16 AM
Subject: Re: f@#$ing MMX emulator

>> For god sakes peoples.. The reason the fpu emulator is in the kernel is
>> because it HAS to be in there. Without it you're up the proverbial creek
>
>No it doesnt. It can be in the C libraries
>
>> have highly specialised and specific purposes. Until a compiler exists
>> that actually makes use of MMX opcodes (which i dread the day this
>> happens), an MMX emulator is COMPLETELY USELESS and just contributes to
>
>The latest egcs can make use of the sparc equivalent of MMX already
>

This is interesting. Is this only egcs or gcc 2.8.x too? Does the ultra
200 have the sparc MMX? I optimized a program for the ultra cpu and then
found that it couldn't run on sparc 20 and 10. I was surprised as this
never happened before. Do they have any plans on making use of MMX too?

>Alan
>
>
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