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Code Issues Releases Wiki Activity

Revert all the SEE stuff

Browse source 
The speed up seems to introduce some
functionality change.

Revert to original master for now.

bench: 4769737
This commit is contained in:
Marco Costalba 2013-07-20 14:20:17 +02:00
parent 7b0b463720
commit 2ed56f4d5f
1 changed files with 10 additions and 8 deletions
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18
src/position.cpp
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@ -79,8 +79,6 @@ PieceType min_attacker(const Bitboard* bb, const Square& to, const Bitboard& stm
if (Pt == ROOK || Pt == QUEEN)
attackers |= attacks_bb<ROOK>(to, occupied) & (bb[ROOK] | bb[QUEEN]);
attackers &= occupied; // Remove the just found attacker
return (PieceType)Pt;
}
return min_attacker<Pt+1>(bb, to, stmAttackers, occupied, attackers);
@ -1197,21 +1195,25 @@ int Position::see(Move m, int asymmThreshold) const {
do {
assert(slIndex < 32);
if (captured == KING) // Stop before processing a king capture
{
swapList[slIndex++] = QueenValueMg * 16;
break;
}
// Add the new entry to the swap list
swapList[slIndex] = -swapList[slIndex - 1] + PieceValue[MG][captured];
slIndex++;
// Locate and remove the next least valuable attacker
captured = min_attacker<PAWN>(byTypeBB, to, stmAttackers, occupied, attackers);
attackers &= occupied; // Remove the just found attacker
stm = ~stm;
stmAttackers = attackers & pieces(stm);
if (captured == KING)
{
// Stop before processing a king capture
if (stmAttackers)
swapList[slIndex++] = QueenValueMg * 16;
break;
}
} while (stmAttackers);
// If we are doing asymmetric SEE evaluation and the same side does the first