From: Matt Turner Date: Wed, 6 May 2015 02:50:58 +0000 (-0700) Subject: nir: Recognize imul(b2i(a), b2i(b)) as a logical AND. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=74697e2844a0850ef6b91fb4d34bfa3f6f4bff32;p=mesa.git nir: Recognize imul(b2i(a), b2i(b)) as a logical AND. Four shaders in Unreal 4's Sun Temple are helped, and gain SIMD16 because we avoid an integer multiplication. instructions in affected programs: 2353 -> 2245 (-4.59%) helped: 4 GAINED: 4 Reviewed-by: Jordan Justen Reviewed-by: Glenn Kennard --- diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py index 2a2b9561efb..92928cf3a1d 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -101,6 +101,7 @@ optimizations = [ (('seq', a, b), ('b2f', ('feq', a, b)), 'options->lower_scmp'), (('sne', a, b), ('b2f', ('fne', a, b)), 'options->lower_scmp'), # Emulating booleans + (('imul', ('b2i', a), ('b2i', b)), ('b2i', ('iand', a, b))), (('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))), (('fsat', ('fadd', ('b2f', a), ('b2f', b))), ('b2f', ('ior', a, b))), (('iand', 'a@bool', 1.0), ('b2f', a)),