From 8fb8fe46fa565dceedacd95287c836004b0fade2 Mon Sep 17 00:00:00 2001 From: Thomas Helland Date: Sat, 28 Feb 2015 20:32:32 +0100 Subject: [PATCH] nir: Optimize a + neg(a) Shader-db i965 instructions: total instructions in shared programs: 1711180 -> 1711159 (-0.00%) instructions in affected programs: 825 -> 804 (-2.55%) helped: 9 HURT: 0 GAINED: 3 LOST: 3 Shader-db NIR instructions: total instructions in shared programs: 606187 -> 606179 (-0.00%) instructions in affected programs: 298 -> 290 (-2.68%) helped: 4 HURT: 0 GAINED: 0 LOST: 0 Reviewed-by: Matt Turner Reviewed-by: Jason Ekstrand Signed-off-by: Thomas Helland --- 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 688ceff8c92..ef855aa774e 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -58,6 +58,8 @@ optimizations = [ (('iadd', a, 0), a), (('fadd', ('fmul', a, b), ('fmul', a, c)), ('fmul', a, ('fadd', b, c))), (('iadd', ('imul', a, b), ('imul', a, c)), ('imul', a, ('iadd', b, c))), + (('fadd', ('fneg', a), a), 0.0), + (('iadd', ('ineg', a), a), 0), (('fmul', a, 0.0), 0.0), (('imul', a, 0), 0), (('fmul', a, 1.0), a), -- 2.30.2