[NNUE] StateInfo handling speed improvement #2873
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Don't copy NNUE parts of StateInfo when not needed in do_null_move(). Measurement vs master at STC shows only ~3 Elo regression when NNUE is not used, was ~5 Elo before. https://tests.stockfishchess.org/tests/view/5f23a9052f7e63962b99f51b ELO: -3.02 +-1.7 (95%) LOS: 0.0% Total: 60000 W: 11145 L: 11666 D: 37189 Ptnml(0-2): 1018, 6945, 14494, 6626, 917 No functional change.
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Don't copy NNUE parts of StateInfo when not needed in do_null_move().
Measurement vs master at STC shows only ~3 Elo regression when NNUE
is not used, was ~5 Elo before.
https://tests.stockfishchess.org/tests/view/5f23a9052f7e63962b99f51b
ELO: -3.02 +-1.7 (95%) LOS: 0.0%
Total: 60000 W: 11145 L: 11666 D: 37189
Ptnml(0-2): 1018, 6945, 14494, 6626, 917
No functional change.