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nir/opt_algebraic: take advantage of range helpers including nnan

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Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40389>
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Georg Lehmann 2026-03-13 09:46:19 +01:00 • committed by Marge Bot
parent b046eaf36d
commit d77c2a1ece
1 changed files with 1 additions and 9 deletions
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10
src/compiler/nir/nir_opt_algebraic.py
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@ -899,10 +899,6 @@ optimizations.extend([
(('flt', ('fadd(is_used_once)', a, ('fneg', b)), 0.0), ('flt', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('flt(nnan)', b, a), b, a), ('fmin(preserve_nan_inf)', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('flt(nnan)', a, b), b, a), ('fmax(preserve_nan_inf)', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('fge(nnan)', a, b), b, a), ('fmin(preserve_nan_inf)', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('fge(nnan)', b, a), b, a), ('fmax(preserve_nan_inf)', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('flt', b, 'a(is_a_number)'), b, a), ('fmin(preserve_nan_inf)', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('flt', 'a(is_a_number)', b), b, a), ('fmax(preserve_nan_inf)', a, b)),
(('bcsel(is_only_used_as_float_nsz)', ('fge', 'a(is_a_number)', b), b, a), ('fmin(preserve_nan_inf)', a, b)),
@ -1054,10 +1050,8 @@ optimizations.extend([
# fmin(0.0, b)) while the right one is "b", so this optimization is not NaN correct.
(('fmin(nsz)', ('fsat(nnan)', a), '#b(is_zero_to_one)'), ('fsat', ('fmin', a, b))),
(('fsat(nnan)', 'a(is_ge_pos_one)'), 1.0),
(('fsat', 'a(is_a_number_ge_pos_one)'), 1.0),
(('fsat(nnan,nsz)', 'a(is_zero_to_one)'), ('fcanonicalize', a)),
(('fsat(nsz)', 'a(is_a_number_zero_to_one)'), ('fcanonicalize', a)),
# Let constant folding do its job. This can have emergent behaviour.
@ -1072,7 +1066,6 @@ optimizations.extend([
(('fmax', 'a(is_le_pos_one)', 0.0), ('fsat', a), '!options->lower_fsat'),
(('fsat', ('fmax', a, 'b(is_not_positive)')), ('fsat', a)),
(('fsat', ('fmin(nnan)', a, 'b(is_ge_pos_one)')), ('fsat', a)),
(('fsat', ('fmin', 'a(is_a_number)', 'b(is_ge_pos_one)')), ('fsat', a)),
(('fsat', ('bcsel(is_used_once)', a, b, '#c')), ('bcsel', a, ('fsat', b), ('fsat', c))),
@ -1913,13 +1906,12 @@ optimizations.extend([
(('ftrunc', 'a(is_integral)'), a),
(('fround_even', 'a(is_integral)'), a),
# fract(x) = x - floor(x), so fract(NaN) = NaN
# fract(x) = x - floor(x), so fract(NaN/Inf) = NaN
(('ffract(nnan)', 'a(is_integral)'), 0.0),
(('ffract', ('ffract', a)), ('ffract', a)),
(('fabs', 'a(is_not_negative)'), ('fcanonicalize', a)),
(('fsat', 'a(is_not_positive)'), 0.0),
(('fmin(nnan,nsz)', 'a(is_not_negative)', 1.0), ('fsat', a), '!options->lower_fsat'),
(('fmin(nsz)', 'a(is_a_number_not_negative)', 1.0), ('fsat', a), '!options->lower_fsat'),
# The result of the multiply must be in [-1, 0], so the result of the ffma