On Mar 16, 2009, at 11:09 AM, David Jander wrote:
In this patch, I placed the LRW table in SPRG6 like before, but
Kumar's code
seems a little more compact, so I decided to use that one and fix
it ;-)
It's a pity we seem to have one register short in the handler, so we
need to
load SPRN_SRR1 twice :-(
Allthough the code-path now has 1 instruction less than my previous
version
most of the time (and 2 instructions more when way is not adjusted),
benchmark results are barely affected by this:
1.- mplayer: Total time: 50.392s (50.316s previous patch)
2.- prboom timedemo: 20.1 fps (19.9 fps previous patch)
3.- memcpy speed: 179 MByte/s (180 Mbyte/s previous patch)
Conclusion: difference not measurable between v4 and v5.
Can we try this memory instead of the SPRG to see if any noticeable
difference?
- k
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