From: Samuel Pitoiset Date: Wed, 30 May 2018 08:48:31 +0000 (+0200) Subject: nir: optimize iand(ieq(a, 0), ieq(b, 0)) to ieq(ior(a, b), 0) X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=70f9e2589e6be7857c9c874aa1967e8b8608db88;p=mesa.git nir: optimize iand(ieq(a, 0), ieq(b, 0)) to ieq(ior(a, b), 0) Totals from affected shaders: SGPRS: 80 -> 80 (0.00 %) VGPRS: 48 -> 48 (0.00 %) Code Size: 2120 -> 2096 (-1.13 %) bytes Max Waves: 16 -> 16 (0.00 %) Only two Rise of Tomb Raider shaders are affected on my side. Signed-off-by: Samuel Pitoiset Reviewed-by: Bas Nieuwenhuizen Reviewed-by: Ian Romanick --- diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 21b9acecbe2..ba788f221a3 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -282,6 +282,8 @@ optimizations = [ (('iand', ('uge(is_used_once)', a, b), ('uge', a, c)), ('uge', a, ('umax', b, c))), (('iand', ('uge(is_used_once)', a, c), ('uge', b, c)), ('uge', ('umin', a, b), c)), + (('iand', ('ieq', 'a@32', 0), ('ieq', 'b@32', 0)), ('ieq', ('ior', 'a@32', 'b@32'), 0)), + # These patterns can result when (a < b || a < c) => (a < min(b, c)) # transformations occur before constant propagation and loop-unrolling. (('~flt', a, ('fmax', b, a)), ('flt', a, b)),