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Windows x64 for modern computers + AVX2
Windows x64 for modern computers
Windows x64 + SSSE3
Linux x64 for Haswell CPUs
Linux x64 for modern computers + AVX2
Linux x64 for modern computers
Linux x64 + SSSE3
Linux x64
Author: MinetaS
Date: Mon Sep 9 18:02:32 2024 +0200
Timestamp: 1725897752

Small speedup in incremental accumulator updates

Instead of updating at most two accumulators, update all accumluators
during incremental updates. Tests have shown that this change yields a
small speedup of at least 0.5%, and up to 1% with shorter TC.

Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 54368 W: 14179 L: 13842 D: 26347 Elo +2.15
Ptnml(0-2): 173, 6122, 14262, 6449, 178
https://tests.stockfishchess.org/tests/view/66db038a9de3e7f9b33d1ad9

Passed 5+0.05:
LLR: 2.98 (-2.94,2.94) <0.00,2.00>
Total: 55040 W: 14682 L: 14322 D: 26036 Elo +2.27
Ptnml(0-2): 303, 6364, 13856, 6664, 333
https://tests.stockfishchess.org/tests/view/66dbc325dc53972b68218ba7

Passed non-regression LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 57390 W: 14555 L: 14376 D: 28459 Elo +1.08
Ptnml(0-2): 37, 5876, 16683, 6069, 30
https://tests.stockfishchess.org/tests/view/66dbc30adc53972b68218ba5

closes https://github.com/official-stockfish/Stockfish/pull/5576

No functional change
see source