Module: Mesa
Branch: master
Commit: 6eadde51bba26bc57da7b26cbb40d783259d4a5f
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=6eadde51bba26bc57da7b26cbb40d783259d4a5f
Author: Eric Anholt <e...@anholt.net>
Date: Fri Jan 30 14:10:58 2015 -0800
nir: Recognize and reduce duplicated fsats.
No effect on vc4 shader-db.
v2: Rebase to master (no TGSI->NIR present)
Reviewed-by: Kenneth Graunke <kenn...@whitecape.org> (v1)
---
src/glsl/nir/nir_opt_algebraic.py | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/glsl/nir/nir_opt_algebraic.py
b/src/glsl/nir/nir_opt_algebraic.py
index c7cb651..504c9f6 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -87,6 +87,8 @@ optimizations = [
(('bcsel', ('flt', a, b), b, a), ('fmax', a, b)),
(('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a), '!options->lower_fsat'),
(('fsat', a), ('fmin', ('fmax', a, 0.0), 1.0), 'options->lower_fsat'),
+ (('fsat', ('fsat', a)), ('fsat', a)),
+ (('fmin', ('fmax', ('fmin', ('fmax', a, 0.0), 1.0), 0.0), 1.0), ('fmin',
('fmax', a, 0.0), 1.0)),
# Comparison with the same args. Note that these are not done for
# the float versions because NaN always returns false on float
# inequalities.
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