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Revert previous patch

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It seems a regression at 15+0.05:
ELO: -4.82 +-2.1 (95%) LOS: 0.0%
Total: 40000 W: 7181 L: 7736 D: 25083

bench: 8331357
This commit is contained in:
Marco Costalba 2013-11-17 23:47:18 +01:00
parent 917944e9c5
commit c376ffce0f
3 changed files with 10 additions and 15 deletions
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9
src/movepick.cpp
View file

@ -140,15 +140,6 @@ MovePicker::MovePicker(const Position& p, Move ttm, const HistoryStats& h, Piece
}
/// quiet_moves() returns a pointer to the beginning of moves array. It
/// is used to access already tried quiet moves when updating history.
const ExtMove* MovePicker::quiet_moves() const {
return stage == KILLERS_S1 ? killers
: stage == QUIETS_1_S1 || stage == QUIETS_2_S1 ? moves : NULL;
}
/// score() assign a numerical move ordering score to each move in a move list.
/// The moves with highest scores will be picked first.
template<>

1
src/movepick.h
View file

@ -88,7 +88,6 @@ public:
MovePicker(const Position&, Move, const HistoryStats&, PieceType);
MovePicker(const Position&, Move, Depth, const HistoryStats&, Move*, Search::Stack*);
const ExtMove* quiet_moves() const;
template<bool SpNode> Move next_move();
private:

15
src/search.cpp
View file

@ -484,6 +484,7 @@ namespace {
assert(PvNode || (alpha == beta - 1));
assert(depth > DEPTH_ZERO);
Move quietsSearched[64];
StateInfo st;
const TTEntry *tte;
SplitPoint* splitPoint;
@ -493,7 +494,7 @@ namespace {
Value bestValue, value, ttValue, eval, nullValue, futilityValue;
bool inCheck, givesCheck, pvMove, singularExtensionNode, improving;
bool captureOrPromotion, dangerous, doFullDepthSearch;
int moveCount;
int moveCount, quietCount;
// Step 1. Initialize node
Thread* thisThread = pos.this_thread();
@ -514,7 +515,7 @@ namespace {
goto moves_loop;
}
moveCount = 0;
moveCount = quietCount = 0;
bestValue = -VALUE_INFINITE;
ss->currentMove = threatMove = (ss+1)->excludedMove = bestMove = MOVE_NONE;
ss->ply = (ss-1)->ply + 1;
@ -900,6 +901,8 @@ moves_loop: // When in check and at SpNode search starts from here
pvMove = PvNode && moveCount == 1;
ss->currentMove = move;
if (!SpNode && !captureOrPromotion && quietCount < 64)
quietsSearched[quietCount++] = move;
// Step 14. Make the move
pos.do_move(move, st, ci, givesCheck);
@ -1074,9 +1077,11 @@ moves_loop: // When in check and at SpNode search starts from here
// played non-capture moves.
Value bonus = Value(int(depth) * int(depth));
History.update(pos.moved_piece(bestMove), to_sq(bestMove), bonus);
for (const ExtMove* em = mp.quiet_moves(); em && em->move != bestMove; ++em)
History.update(pos.moved_piece(em->move), to_sq(em->move), -bonus);
for (int i = 0; i < quietCount - 1; ++i)
{
Move m = quietsSearched[i];
History.update(pos.moved_piece(m), to_sq(m), -bonus);
}
if (is_ok((ss-1)->currentMove))
Countermoves.update(pos.piece_on(prevMoveSq), prevMoveSq, bestMove);