shader-db results BDW:
total instructions in shared programs: 13039631 -> 13039536 (-0.00%)
instructions in affected programs: 24328 -> 24233 (-0.39%)
helped: 86
HURT: 0
total cycles in shared programs: 256345938 -> 256344020 (-0.00%)
cycles in affected programs: 643654 -> 641736 (-0.30%)
helped: 37
HURT: 29
---
src/compiler/nir/nir_opt_algebraic.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/compiler/nir/nir_opt_algebraic.py
b/src/compiler/nir/nir_opt_algebraic.py
index e5b183f..8d52e6d 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -529,6 +529,10 @@ late_optimizations = [
(('b2f(is_used_more_than_once)', ('inot', a)), ('bcsel', a, 0.0, 1.0)),
(('fneg(is_used_more_than_once)', ('b2f', ('inot', a))), ('bcsel', a, -0.0,
-1.0)),
+
+ # we do these late so that we don't get in the way of creating of ffmas
+ (('fmin', ('fadd(is_used_once)', '#c', a), ('fadd(is_used_once)', "#c",
b)), ('fadd', c, ('fmin', a, b))),
+ (('fmax', ('fadd(is_used_once)', '#c', a), ('fadd(is_used_once)', "#c",
b)), ('fadd', c, ('fmax', a, b))),
]
print nir_algebraic.AlgebraicPass("nir_opt_algebraic", optimizations).render()
--
2.9.3
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