[Mesa-dev] [PATCH] i965/blorp: Use LRP instruction to do manual blending.

Matt Turner mattst88 at gmail.com
Tue Mar 5 16:22:25 PST 2013

On Tue, Mar 5, 2013 at 3:56 PM, Matt Turner <mattst88 at gmail.com> wrote:
> Replaces (samples - 1) ADDs and a MUL with (samples - 1) LRPs.
> ---

NAK this. LRP is a 3-src operand instruction, which means 16-wide
needs to double the instructions. In the best case, this might be
slightly better but we don't do the proper register bank allocation so
we'd probably get the worst case, which would be worse than what we
have now. Maybe revisit.

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