From: "Mattox, Dave" <DMattox@UNITECH.COM>
To: linux-ia64@vger.kernel.org
Subject: RE: [Linux-ia64] Multimedia Instructions
Date: Fri, 20 Oct 2000 23:59:02 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590678205605@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590678205602@msgid-missing>
I figured as much. Its just a shame that some really nice instructions have
such relatively huge penalties associated with them.
Dave
-----Original Message-----
From: linux-ia64-admin@linuxia64.org
[mailto:linux-ia64-admin@linuxia64.org]On Behalf Of Dan Pop
Sent: Friday, October 20, 2000 4:26 PM
To: Mattox, Dave
Cc: 'linux-ia64@linuxia64.org'
Subject: Re: [Linux-ia64] Multimedia Instructions
On Fri, 20 Oct 2000, Mattox, Dave wrote:
> 2. Does anyone know if the 10 clock cycle penalty for a multimedia
> instruction result used in a different instruction type is just a quirk of
> the Itanium Chip or will this most likely be carried into future IA-64
> Chipsets?
It's certainly an implementation detail of the Itanium, not a property
of the IA64 architecture. Of course, only some Intel people have an
idea about what the penalty will be in the next implementation.
Dan
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next prev parent reply other threads:[~2000-10-20 23:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-20 22:16 [Linux-ia64] Multimedia Instructions Mattox, Dave
2000-10-20 23:25 ` Dan Pop
2000-10-20 23:59 ` Mattox, Dave [this message]
2000-10-23 14:47 ` Saxena, Sunil
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