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3 Commits

Author SHA1 Message Date
Eric Anholt
20f087863d glsl: Fix incorrect optimization of instructions before discard statements. 
The function was named "find_unconditional_discard", but didn't
actually check that the discard statement found was unconditional.
Fixes piglit glsl-fs-discard-04.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
 2011-06-10 13:17:01 -07:00
Eric Anholt
2b13e13594 glsl: Skip processing of expression trees in discard simplification. 
It only cares about "if", "loop", and "discard".
 2011-03-15 09:49:01 -07:00
Kenneth Graunke
9a1d063c6d glsl: Add an optimization pass to simplify discards. 
NOTE: This is a candidate for the 7.9 branch.
 2010-12-01 11:52:43 -08:00