On Haswell (GL 3.3):
total instructions in shared programs: 6211485 -> 6211427 (-0.00%)
instructions in affected programs: 16260 -> 16202 (-0.36%)
helped: 25
HURT: 37
On Broadwell (GL 4.4):
total instructions in shared programs: 11640288 -> 11640218 (-0.00%)
instructions in affected programs: 16313 -> 16243 (-0.43%)
helped: 27
HURT: 37
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/compiler/nir/nir_opt_algebraic.py | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/compiler/nir/nir_opt_algebraic.py
b/src/compiler/nir/nir_opt_algebraic.py
index 4e9896f..ef87d4d 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -135,6 +135,9 @@ optimizations = [
# inot(a)
(('fge', 0.0, ('b2f', a)), ('inot', a)),
+ # -(b2f(a) + b2f(b)) >= 0 becomes !(a || b)
+ (('fge', ('fneg', ('fadd', ('b2f', 'a@bool'), ('b2f', 'b@bool'))), 0.0),
('inot', ('ior', a, b))),
+
# 0.0 < fabs(a)
# fabs(a) > 0.0
# fabs(a) != 0.0 because fabs(a) must be >= 0
--
2.9.0
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