Module: Mesa Branch: master Commit: 905ff861982450831a56d112036f68a751337441 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=905ff861982450831a56d112036f68a751337441
Author: Matt Turner <[email protected]> Date: Wed Feb 3 14:28:31 2016 -0800 nir: Recognize open-coded extract_u16. No shader-db changes, but does recognize some extract_u16 which enables the next patch to optimize some code. Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Iago Toral Quiroga <[email protected]> --- src/compiler/nir/nir_opt_algebraic.py | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index dd26805..39be85f 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -163,6 +163,7 @@ optimizations = [ (('ushr', 0, a), 0), (('ushr', a, 0), a), (('iand', 0xff, ('ushr', a, 24)), ('ushr', a, 24)), + (('iand', 0xffff, ('ushr', a, 16)), ('ushr', a, 16)), # Exponential/logarithmic identities (('fexp2', ('flog2', a)), a), # 2^lg2(a) = a (('flog2', ('fexp2', a)), a), # lg2(2^a) = a @@ -220,6 +221,10 @@ optimizations = [ (('iand', 0xff, ('ushr', a, 8)), ('extract_u8', a, 1), '!options->lower_extract_byte'), (('iand', 0xff, a), ('extract_u8', a, 0), '!options->lower_extract_byte'), + # Word extraction + (('ushr', a, 16), ('extract_u16', a, 1), '!options->lower_extract_word'), + (('iand', 0xffff, a), ('extract_u16', a, 0), '!options->lower_extract_word'), + # Subtracts (('fsub', a, ('fsub', 0.0, b)), ('fadd', a, b)), (('isub', a, ('isub', 0, b)), ('iadd', a, b)), _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
