[SunRescue] help a guy run 2.6 on his 670MP
Gregory Leblanc
rescue at sunhelp.org
Wed May 16 15:45:38 CDT 2001
On 16 May 2001 13:38:12 -0700, James Lockwood wrote:
> On Wed, 16 May 2001, Dave McGuire wrote:
>
> > It's what MMX should have been. It's very impressive. I still
>
> Right. One of my favorite things about VIS is how flexible it is. You
> can do cool things like using fpmerge to double 8-bit data:
>
> membar #StoreLoad
> ldda [%o0]0xF0,%f0
> fpmerge %f0,%f0,%f16
> fpmerge %f1,%f1,%f18
> fpmerge %f2,%f2,%f20
> fpmerge %f3,%f3,%f22
> fpmerge %f4,%f4,%f24
> fpmerge %f5,%f5,%f26
> fpmerge %f6,%f6,%f28
> fpmerge %f7,%f7,%f30
> stda %f16,[%o1]0xF0
> membar #StoreLoad
>
> Naturally you'd want to overlap your ldda/stda's and unroll a loop around
> this to keep the memory bus flowing at the same time as the FP units.
Out of curiosity, is this completely opaque to anybody else? :)
Greg
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