[Mesa-dev] [PATCH 00/11] glsl: Collection of algebraic optimizations

[thomashelland90 at gmail.com]

From: Thomas Helland <thomashelland90 at gmail.com>

Some of these patches have been posted to the list before.
Eric showed interest in these being merged, so I addressed his points.
Pathces 1 - 7 I've added Eric's R-B on.

Patch 8 drops the part that people had doubt on.

Patch 9 has been posted before, and seemed to be accepted as OK.
However, it no longer gives us the same profit, but instead causes
some more crashes in a piglit quick run.

Patch 10 gives us some profit on some TF2 shaders.

Patch 11 is a hit-and-miss since patch 10 proved usefull.
This shows no effect on shader-db however.

If anyone want's to see them merged then maybe
that person could push them upstream?
I don't have commit access, and currently don't feel git-savvy 
enough that I feel comfortable pokeing around in upstream either :)

Thomas Helland (11):
  glsl: Optimize X - X == 0
  glsl: Optimize !A || A == 1
  glsl: Optimize !A && A
  glsl: Optimize (A || B) && A == A
  glsl: Optimize log(x) + log(y) == log(x*y)
  glsl: Optimize exp(x) * exp(y) == exp(x*y)
  glsl: Optimize some more pow() special cases
  glsl: Optimize A - neg(B) = A + B
  glsl: Optimize logic operation A || (A && B)
  glsl: Optimize X + neg(X) == 0 and the other way around
  glsl: Optimize X / X == 1

 src/glsl/opt_algebraic.cpp | 97 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 96 insertions(+), 1 deletion(-)

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2.0.3