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nir/opt_algebraic: remove fcmp+fneg patterns that are cleaned up earlier

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No Foz-DB changes, as expected.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40138>
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Georg Lehmann 2026-02-27 14:02:17 +01:00 • committed by Marge Bot
parent a5334ec239
commit ef6f5377da
1 changed files with 0 additions and 10 deletions
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10
src/compiler/nir/nir_opt_algebraic.py
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@ -798,31 +798,23 @@ optimizations.extend([
# inot(a)
(('fge', 0.0, ('b2f', 'a@1')), ('inot', a)),
(('fge', ('fneg', ('b2f', 'a@1')), 0.0), ('inot', a)),
(('fneu', ('fadd', ('b2f', 'a@1'), ('b2f', 'b@1')), 0.0), ('ior', a, b)),
(('fneu', ('b2f', 'a@1'), ('fneg', ('b2f', 'b@1'))), ('ior', a, b)),
(('fneu', ('fadd', ('b2f', 'a@1'), ('fneg', ('b2f', 'b@1'))), 0.0), ('ixor', a, b)),
(('fneu', ('b2f', 'a@1') , ('b2f', 'b@1') ), ('ixor', a, b)),
(('fneu', ('fneg', ('b2f', 'a@1')), ('fneg', ('b2f', 'b@1'))), ('ixor', a, b)),
(('feq', ('fadd', ('b2f', 'a@1'), ('b2f', 'b@1')), 0.0), ('inot', ('ior', a, b))),
(('feq', ('b2f', 'a@1'), ('fneg', ('b2f', 'b@1'))), ('inot', ('ior', a, b))),
(('feq', ('fadd', ('b2f', 'a@1'), ('fneg', ('b2f', 'b@1'))), 0.0), ('ieq', a, b)),
(('feq', ('b2f', 'a@1') , ('b2f', 'b@1') ), ('ieq', a, b)),
(('feq', ('fneg', ('b2f', 'a@1')), ('fneg', ('b2f', 'b@1'))), ('ieq', a, b)),
# -(b2f(a) + b2f(b)) < 0
# 0 < b2f(a) + b2f(b)
# 0 != b2f(a) + b2f(b) b2f must be 0 or 1, so the sum is non-negative
# a || b
(('flt', ('fneg', ('fadd', ('b2f', 'a@1'), ('b2f', 'b@1'))), 0.0), ('ior', a, b)),
(('flt', 0.0, ('fadd', ('b2f', 'a@1'), ('b2f', 'b@1'))), ('ior', a, b)),
# -(b2f(a) + b2f(b)) >= 0
# 0 >= b2f(a) + b2f(b)
# 0 == b2f(a) + b2f(b) b2f must be 0 or 1, so the sum is non-negative
# !(a || b)
(('fge', ('fneg', ('fadd', ('b2f', 'a@1'), ('b2f', 'b@1'))), 0.0), ('inot', ('ior', a, b))),
(('fge', 0.0, ('fadd', ('b2f', 'a@1'), ('b2f', 'b@1'))), ('inot', ('ior', a, b))),
(('flt', a, ('fneg', a)), ('flt', a, 0.0)),
@ -915,7 +907,6 @@ optimizations.extend([
(('flt', ('fadd(is_used_once)', a, ('fneg', b)), 0.0), ('flt', a, b)),
(('fge', ('fneg', ('fabs', a)), 0.0), ('feq', a, 0.0)),
(('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)),
@ -1652,7 +1643,6 @@ optimizations.extend([
(('fmax', ('fadd', ('b2f', 'a@1'), ('fneg', ('b2f', 'b@1'))), 0.0), ('b2f', ('iand', a, ('inot', b)))),
(('iand', 'a@bool16', 1.0), ('b2f', a)),
(('iand', 'a@bool32', 1.0), ('b2f', a)),
(('flt', ('fneg', ('b2f', 'a@1')), 0), a), # Generated by TGSI KILL_IF.
# Comparison with the same args. Note that these are only done for the
# float versions when the source must be a number. Generally, NaN cmp NaN
# produces the opposite result of X cmp X. flt is the outlier. NaN < NaN