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Revert hidden checkers rework

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It is slower the previous uglier but faster code.

So completely restore old one for now :-(

Just leave in the rework of status backup/restore in do_move().

We will cherry pick bits of previous work once we are sure
we have fixed the performance regression.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-03-02 16:20:00 +01:00
parent 9b6b9e67fe
commit c02613860a
7 changed files with 111 additions and 201 deletions
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21
src/movepick.cpp
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@@ -96,6 +96,9 @@ MovePicker::MovePicker(const Position& p, bool pv, Move ttm,
else
phaseIndex = (noCaptures ? NoMovesPhaseIndex : QsearchWithoutChecksPhaseIndex);
dc = p.discovered_check_candidates(us);
pinned = p.pinned_pieces(us);
finished = false;
}
@@ -127,7 +130,7 @@ Move MovePicker::get_next_move() {
if (ttMove != MOVE_NONE)
{
assert(move_is_ok(ttMove));
if (move_is_legal(pos, ttMove))
if (move_is_legal(pos, ttMove, pinned))
return ttMove;
}
break;
@@ -136,7 +139,7 @@ Move MovePicker::get_next_move() {
if (mateKiller != MOVE_NONE)
{
assert(move_is_ok(mateKiller));
if (move_is_legal(pos, mateKiller))
if (move_is_legal(pos, mateKiller, pinned))
return mateKiller;
}
break;
@@ -159,7 +162,7 @@ Move MovePicker::get_next_move() {
case PH_EVASIONS:
assert(pos.is_check());
numOfMoves = generate_evasions(pos, moves);
numOfMoves = generate_evasions(pos, moves, pinned);
score_evasions();
movesPicked = 0;
break;
@@ -171,7 +174,7 @@ Move MovePicker::get_next_move() {
break;
case PH_QCHECKS:
numOfMoves = generate_checks(pos, moves);
numOfMoves = generate_checks(pos, moves, dc);
movesPicked = 0;
break;
@@ -391,7 +394,7 @@ Move MovePicker::pick_move_from_list() {
moves[bestIndex] = moves[movesPicked++];
if ( move != ttMove
&& move != mateKiller
&& pos.pl_move_is_legal(move))
&& pos.pl_move_is_legal(move, pinned))
return move;
}
break;
@@ -411,7 +414,7 @@ Move MovePicker::pick_move_from_list() {
moves[bestIndex] = moves[movesPicked++];
if ( move != ttMove
&& move != mateKiller
&& pos.pl_move_is_legal(move))
&& pos.pl_move_is_legal(move, pinned))
return move;
}
break;
@@ -439,7 +442,7 @@ Move MovePicker::pick_move_from_list() {
move = badCaptures[movesPicked++].move;
if ( move != ttMove
&& move != mateKiller
&& pos.pl_move_is_legal(move))
&& pos.pl_move_is_legal(move, pinned))
return move;
}
break;
@@ -454,7 +457,7 @@ Move MovePicker::pick_move_from_list() {
moves[bestIndex] = moves[movesPicked++];
// Remember to change the line below if we decide to hash the qsearch!
// Maybe also postpone the legality check until after futility pruning?
if (/* move != ttMove && */ pos.pl_move_is_legal(move))
if (/* move != ttMove && */ pos.pl_move_is_legal(move, pinned))
return move;
}
break;
@@ -468,7 +471,7 @@ Move MovePicker::pick_move_from_list() {
{
move = moves[movesPicked++].move;
// Remember to change the line below if we decide to hash the qsearch!
if (/* move != ttMove && */ pos.pl_move_is_legal(move))
if (/* move != ttMove && */ pos.pl_move_is_legal(move, pinned))
return move;
}
break;