[Mesa-dev] [PATCH 2/2] prog_optimize: Add reads without writes optimization pass

[Ian Romanick]

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On 03/30/2011 09:34 PM, Tom Stellard wrote:

> Ok, this makes sense.  It would be pretty easy to modify my original patch
> to do this, but maybe it's better change the way ir_to_mesa.cpp converts
> conditional assignments to Mesa IR.  Do you have any suggestions for how
> to determine if the left hand side of an ir_assignment has already been
> written to?

There's not a good way right now.  The 2nd thing down on my to-do list
is ud-chains.  Once we have that, it will be trivial.  A lot of other
things (CSE, anyone?) will also be much easier.

For now, it's probably best to do it the way you're already doing it.
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