From: Matt Turner Date: Thu, 26 Mar 2015 17:09:21 +0000 (-0700) Subject: nir: Recognize (a < b || a < c) as a < max(b, c). X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=97e6c1b9579573444487d0ac6d9a6b73c067b495;p=mesa.git nir: Recognize (a < b || a < c) as a < max(b, c). Doesn't work for analogous && cases, because of NaNs. total instructions in shared programs: 6195712 -> 6194829 (-0.01%) instructions in affected programs: 42000 -> 41117 (-2.10%) helped: 403 Reviewed-by: Eric Anholt --- diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py index 3a3e6bfabb2..6181f5df7a4 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -94,6 +94,8 @@ 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)), + (('ior', ('flt', a, b), ('flt', a, c)), ('flt', a, ('fmax', b, c))), + (('ior', ('fge', a, b), ('fge', a, c)), ('fge', a, ('fmin', b, c))), # Emulating booleans (('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))), (('fsat', ('fadd', ('b2f', a), ('b2f', b))), ('b2f', ('ior', a, b))),