Module: Mesa
Branch: master
Commit: 4bb1a34727f52ecd4a8f00725d740ae2047cb1dc
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=4bb1a34727f52ecd4a8f00725d740ae2047cb1dc
Author: Jason Ekstrand <jason.ekstr...@intel.com>
Date: Thu Dec 6 13:02:01 2018 -0600
nir/algebraic: Optimize x2b(xneg(a)) -> a
Shader-db results on Kaby Lake:
total instructions in shared programs: 15072525 -> 15072525 (0.00%)
instructions in affected programs: 0 -> 0
helped: 0
HURT: 0
This helps prevent regressions in later commits.
Reviewed-by: Eric Anholt <e...@anholt.net>
Reviewed-by: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl>
Tested-by: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl>
---
src/compiler/nir/nir_opt_algebraic.py | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/compiler/nir/nir_opt_algebraic.py
b/src/compiler/nir/nir_opt_algebraic.py
index 28e8a96d4d..ea24094a92 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -85,6 +85,8 @@ optimizations = [
(('fabs', ('u2f', a)), ('u2f', a)),
(('iabs', ('iabs', a)), ('iabs', a)),
(('iabs', ('ineg', a)), ('iabs', a)),
+ (('f2b', ('fneg', a)), ('f2b', a)),
+ (('i2b', ('ineg', a)), ('i2b', a)),
(('~fadd', a, 0.0), a),
(('iadd', a, 0), a),
(('usadd_4x8', a, 0), a),
_______________________________________________
mesa-commit mailing list
mesa-commit@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-commit
