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small ttCapture simplification.

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ttCapture can be assigned to only once outside of the main loop. The patch seems
functional at higher depths (seems possible in the case of non-legal TTmoves that
are captures).

passed STC
LLR: 2.94 (-2.94,2.94) [-3.00,1.00]
Total: 23189 W: 5098 L: 4980 D: 13111
http://tests.stockfishchess.org/tests/view/5bb3822c0ebc592439f6d966

passed LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 10336 W: 1665 L: 1529 D: 7142
http://tests.stockfishchess.org/tests/view/5bb39a190ebc592439f6db8a

unchanged bench: 4312846
This commit is contained in:
Joost VandeVondele 2018-10-02 16:34:40 +02:00 • committed by Stéphane Nicolet
parent 489357d7b2
commit d615f15fce
1 changed files with 1 additions and 4 deletions
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5
src/search.cpp
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@ -863,7 +863,7 @@ moves_loop: // When in check, search starts from here
value = bestValue; // Workaround a bogus 'uninitialized' warning under gcc
skipQuiets = false;
ttCapture = false;
ttCapture = ttMove && pos.capture_or_promotion(ttMove);
pvExact = PvNode && ttHit && tte->bound() == BOUND_EXACT;
// Step 12. Loop through all pseudo-legal moves until no moves remain
@ -982,9 +982,6 @@ moves_loop: // When in check, search starts from here
continue;
}
if (move == ttMove && captureOrPromotion)
ttCapture = true;
// Update the current move (this must be done after singular extension search)
ss->currentMove = move;
ss->continuationHistory = &thisThread->continuationHistory[movedPiece][to_sq(move)];