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nir/opt_algebraic: optimize d3d a ? b : 0

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Foz-DB Navi21:
Totals from 3466 (4.34% of 79789) affected shaders:
MaxWaves: 73163 -> 73161 (-0.00%); split: +0.02%, -0.02%
Instrs: 3993862 -> 3987633 (-0.16%); split: -0.19%, +0.04%
CodeSize: 21747420 -> 21725620 (-0.10%); split: -0.15%, +0.05%
VGPRs: 190736 -> 190728 (-0.00%); split: -0.04%, +0.03%
SpillSGPRs: 489 -> 478 (-2.25%); split: -2.86%, +0.61%
Latency: 48169718 -> 48159068 (-0.02%); split: -0.05%, +0.02%
InvThroughput: 12132999 -> 12128721 (-0.04%); split: -0.05%, +0.01%
VClause: 78063 -> 78052 (-0.01%); split: -0.09%, +0.08%
SClause: 109095 -> 108996 (-0.09%); split: -0.13%, +0.04%
Copies: 265784 -> 264530 (-0.47%); split: -0.72%, +0.25%
Branches: 84533 -> 84553 (+0.02%)
PreSGPRs: 172577 -> 172531 (-0.03%); split: -0.19%, +0.16%
PreVGPRs: 165776 -> 165825 (+0.03%); split: -0.06%, +0.09%
VALU: 2851544 -> 2850426 (-0.04%); split: -0.08%, +0.04%
SALU: 413543 -> 408408 (-1.24%); split: -1.45%, +0.21%
VMEM: 139890 -> 139887 (-0.00%)

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33761>
This commit is contained in:
Georg Lehmann 2025-02-20 10:43:20 +01:00 • committed by Marge Bot
parent 2e7f34af6b
commit d272a6e261
1 changed files with 5 additions and 9 deletions
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14
src/compiler/nir/nir_opt_algebraic.py
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@ -487,7 +487,7 @@ optimizations.extend([
(('~ffma@64', a, b, c), ('fadd', ('fmul', a, b), c), 'options->fuse_ffma64'),
(('~ffmaz', a, b, c), ('fadd', ('fmulz', a, b), c), 'options->fuse_ffma32'),
(('~fmul', ('fadd', ('iand', ('ineg', ('b2i', 'a@bool')), ('fmul', b, c)), '#d'), '#e'),
(('~fmul', ('fadd', ('bcsel', a, ('fmul', b, c), 0), '#d'), '#e'),
('bcsel', a, ('fmul', ('fadd', ('fmul', b, c), d), e), ('fmul', d, e))),
(('fdph', a, b), ('fdot4', ('vec4', 'a.x', 'a.y', 'a.z', 1.0), b), 'options->lower_fdph'),
@ -1473,10 +1473,12 @@ for s in [8, 16, 32, 64]:
])
optimizations.extend([
(('iand', ('ineg', ('b2i', 'a@1')), b),
('bcsel', a, b, 0)),
(('ior', ('ineg', ('b2i','a@1')), ('ineg', ('b2i', 'b@1'))),
('ineg', ('b2i', ('ior', a, b)))),
(('ige', ('ineg', ('b2i', 'a@1')), 0), ('inot', a)),
(('ilt', ('ineg', ('b2i', 'a@1')), 0), a),
(('iand', ('ineg', ('b2i', a)), 1.0), ('b2f', a)),
(('iand', ('ineg', ('b2i', a)), 1), ('b2i', a)),
(('bcsel', a, ('b2i', 'b@1'), ('b2i', 'c@1')), ('b2i', ('bcsel', a, b, c))),
(('bcsel', a, ('b2i', 'b@1'), 0), ('b2i', ('bcsel', a, b, False))),
(('bcsel', a, ('b2i', 'b@1'), 1), ('b2i', ('bcsel', a, b, True))),
@ -1510,12 +1512,6 @@ for op in ('ior', 'iand', 'ixor'):
(('iand', (op, ('b2i', 'a@1'), ('ineg', ('b2i', 'b@1'))), 1), ('b2i', (op, a, b)) ),
])
# One extra rule for iand. Since one of the sources is missing ineg, the
# final result can only be 0 or 1. Omit the final ineg.
optimizations.extend([
(('iand', ('ineg', ('b2i', 'a@1')), ('b2i', 'b@1')), ('b2i', ('iand', a, b)))
])
optimizations.extend([
(('feq', ('seq', a, b), 1.0), ('feq', a, b)),
(('feq', ('sne', a, b), 1.0), ('fneu', a, b)),