From c658b6c4c8ecf99de35065381ceec5bef7d7ecdf Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Wed, 1 Aug 2018 19:33:24 -0700 Subject: [PATCH] nir: Transform expressions of b2f(a) and b2f(b) to a ^^ b All Gen platforms had pretty similar results. (Skylake shown) total instructions in shared programs: 14276892 -> 14276886 (<.01%) instructions in affected programs: 484 -> 478 (-1.24%) helped: 2 HURT: 0 total cycles in shared programs: 532578397 -> 532578395 (<.01%) cycles in affected programs: 3522 -> 3520 (-0.06%) helped: 1 HURT: 0 Signed-off-by: Ian Romanick Reviewed-by: Thomas Helland --- src/compiler/nir/nir_opt_algebraic.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 9ead2dd..c1ab9dd 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -173,6 +173,9 @@ optimizations = [ (('fne', ('fmul', ('b2f', a), ('b2f', b)), 0.0), ('iand', a, b)), (('fne', ('fmin', ('b2f', a), ('b2f', b)), 0.0), ('iand', a, b)), (('fne', ('bcsel', a, ('b2f', b), 0.0) , 0.0), ('iand', a, b)), + (('fne', ('fadd', ('b2f', a), ('fneg', ('b2f', b))), 0.0), ('ixor', a, b)), + (('fne', ('b2f', a) , ('b2f', b) ), ('ixor', a, b)), + (('fne', ('fneg', ('b2f', a)), ('fneg', ('b2f', b))), ('ixor', a, b)), (('feq', ('fadd', ('b2f', a), ('b2f', b)), 0.0), ('inot', ('ior', a, b))), (('feq', ('fmax', ('b2f', a), ('b2f', b)), 0.0), ('inot', ('ior', a, b))), (('feq', ('bcsel', a, 1.0, ('b2f', b)) , 0.0), ('inot', ('ior', a, b))), -- 2.7.4