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nir/opt_algebraic: optimize d3d9 ftrunc

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Foz-DB Navi21:
Totals from 85 (0.11% of 79395) affected shaders:
MaxWaves: 1972 -> 1968 (-0.20%)
Instrs: 48682 -> 47067 (-3.32%)
CodeSize: 255664 -> 247172 (-3.32%)
VGPRs: 3752 -> 3768 (+0.43%)
Latency: 154414 -> 150360 (-2.63%)
InvThroughput: 37186 -> 35081 (-5.66%)
VClause: 847 -> 865 (+2.13%); split: -0.24%, +2.36%
SClause: 768 -> 796 (+3.65%)
Copies: 2763 -> 2869 (+3.84%); split: -0.14%, +3.98%
VALU: 28133 -> 26781 (-4.81%)
SALU: 7182 -> 6939 (-3.38%)

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32393>
This commit is contained in:
Georg Lehmann
2024-11-28 17:16:32 +01:00
committed by Marge Bot
parent ea4aa8e5a6
commit 34caed8adb
1 changed files with 6 additions and 0 deletions
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src/compiler/nir/nir_opt_algebraic.py
+6
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@@ -437,6 +437,12 @@ optimizations.extend([
(('~flrp', a, 0.0, c), ('fadd', ('fmul', ('fneg', a), c), a)),
# D3D9 vertex shader trunc
(('fadd', ('ffloor', a), ('b2f', ('iand', ('flt', a, 0), ('flt', ('fneg', ('ffract', a)), ('ffract', a))))), ('ftrunc', ('fadd', a, 0))),
# D3D9 pixel shader trunc
(('fadd', ('ffloor', a), ('b2f', ('inot', ('fge', 0, ('fmin', ('fneg', a), ('ffract', a)))))), ('ftrunc', ('fadd', a, 0))),
(('fadd', ('ffloor', a), ('b2f', ('flt', 0, ('fmin', ('fneg', a), ('ffract', a))))), ('ftrunc', ('fadd', a, 0))),
(('ftrunc@16', a), ('bcsel', ('flt', a, 0.0), ('fneg', ('ffloor', ('fabs', a))), ('ffloor', ('fabs', a))), 'options->lower_ftrunc'),
(('ftrunc@32', a), ('bcsel', ('flt', a, 0.0), ('fneg', ('ffloor', ('fabs', a))), ('ffloor', ('fabs', a))), 'options->lower_ftrunc'),
(('ftrunc@64', a), ('bcsel', ('flt', a, 0.0), ('fneg', ('ffloor', ('fabs', a))), ('ffloor', ('fabs', a))),