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Re: ldq and stq on UltraSparc I and II
- From: "David O'Brien" <obrien at FreeBSD dot org>
- To: "David S. Miller" <davem at redhat dot com>
- Cc: gcc at gcc dot gnu dot org, rth at redhat dot com
- Date: Tue, 30 Apr 2002 18:39:32 -0700
- Subject: Re: ldq and stq on UltraSparc I and II
- Organization: The NUXI BSD group
- References: <20020430141112.A78266@dragon.nuxi.com> <20020430.143507.32721777.davem@redhat.com>
- Reply-to: obrien at FreeBSD dot org
On Tue, Apr 30, 2002 at 02:35:07PM -0700, David S. Miller wrote:
> When you say HARD_QUAD this means "supports all quad instructions"
> You need to emulate these instructions anyways. There is no benefit
> from adding the extra granularity you are asking for.
Thanks for the explanation. I thought HARD_QUAD only intended to control
_Qp* usage.
> If you don't want to take the performance hit, do the proper
> quad float library implementation :-)
We grew _Qp* over the weekend. :-)