kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-04-30 00:33:09 +00:00
Code Issues Releases Wiki Activity

Prefetch TT entries in probcut

Browse source 
Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 101344 W: 25893 L: 25491 D: 49960
Ptnml(0-2): 303, 11350, 26991, 11698, 330
https://tests.stockfishchess.org/tests/view/6540daa6cc309ae83956669b

slight speedup:
```
Result of 100 runs
==================
base (./stockfish.master       ) =    1170705  +/- 3133
test (./stockfish.patch        ) =    1174545  +/- 2895
diff                             =      +3841  +/- 3196

speedup        = +0.0033
P(speedup > 0) =  0.9907
```

closes https://github.com/official-stockfish/Stockfish/pull/4856

No functional change
This commit is contained in:
cj5716 2023-10-31 08:25:06 +08:00 • committed by Joost VandeVondele
parent 908811c24a
commit e277dda716
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/search.cpp
View file

@ -869,6 +869,9 @@ Value search(Position& pos, Stack* ss, Value alpha, Value beta, Depth depth, boo
{
assert(pos.capture_stage(move));
// Prefetch the TT entry for the resulting position
prefetch(TT.first_entry(pos.key_after(move)));
ss->currentMove = move;
ss->continuationHistory =
&thisThread