From c31158d2cb06a864cf44d6d4f2c539e359990d3d Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Tue, 17 Mar 2015 23:30:32 -0700 Subject: [PATCH] nir: Recognize mul(b2f(a), b2f(b)) as a logical AND. Transform this into b2f(and(a, b)). total instructions in shared programs: 6205448 -> 6204391 (-0.02%) instructions in affected programs: 284030 -> 282973 (-0.37%) helped: 903 HURT: 6 Acked-by: Ian Romanick Reviewed-by: Connor Abbott --- 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 ef855aa..f956edf 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -95,6 +95,8 @@ optimizations = [ (('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)), + # Emulating booleans + (('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))), # Comparison with the same args. Note that these are not done for # the float versions because NaN always returns false on float # inequalities. -- 2.7.4