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Code Issues Releases Wiki Activity

Move legal check out of MovePicker

Browse source 
No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-05-23 14:58:07 +02:00
parent 45ce92b89c
commit 4b232f5ddc
3 changed files with 11 additions and 17 deletions
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20
src/movepick.cpp
View file

@ -64,8 +64,6 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const History& h,
assert(d > DEPTH_ZERO);
pinned = p.pinned_pieces(pos.side_to_move());
if (p.in_check())
{
ttMoves[1].move = killers[0].move = killers[1].move = MOVE_NONE;
@ -98,8 +96,6 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const History& h)
assert(d <= DEPTH_ZERO);
pinned = p.pinned_pieces(pos.side_to_move());
if (p.in_check())
phasePtr = EvasionTable;
else if (d >= DEPTH_QS_CHECKS)
@ -275,16 +271,14 @@ Move MovePicker::get_next_move() {
case PH_TT_MOVES:
move = (curMove++)->move;
if ( move != MOVE_NONE
&& pos.move_is_pl(move)
&& pos.pl_move_is_legal(move, pinned))
&& pos.move_is_pl(move))
return move;
break;
case PH_GOOD_CAPTURES:
move = pick_best(curMove++, lastMove).move;
if ( move != ttMoves[0].move
&& move != ttMoves[1].move
&& pos.pl_move_is_legal(move, pinned))
&& move != ttMoves[1].move)
{
// Check for a non negative SEE now
int seeValue = pos.see_sign(move);
@ -302,7 +296,6 @@ Move MovePicker::get_next_move() {
move = (curMove++)->move;
if ( move != MOVE_NONE
&& pos.move_is_pl(move)
&& pos.pl_move_is_legal(move, pinned)
&& move != ttMoves[0].move
&& move != ttMoves[1].move
&& !pos.move_is_capture(move))
@ -318,8 +311,7 @@ Move MovePicker::get_next_move() {
if ( move != ttMoves[0].move
&& move != ttMoves[1].move
&& move != killers[0].move
&& move != killers[1].move
&& pos.pl_move_is_legal(move, pinned))
&& move != killers[1].move)
return move;
break;
@ -330,15 +322,13 @@ Move MovePicker::get_next_move() {
case PH_EVASIONS:
case PH_QCAPTURES:
move = pick_best(curMove++, lastMove).move;
if ( move != ttMoves[0].move
&& pos.pl_move_is_legal(move, pinned))
if (move != ttMoves[0].move)
return move;
break;
case PH_QCHECKS:
move = (curMove++)->move;
if ( move != ttMoves[0].move
&& pos.pl_move_is_legal(move, pinned))
if ( move != ttMoves[0].move)
return move;
break;

1
src/movepick.h
View file

@ -53,7 +53,6 @@ private:
const Position& pos;
const History& H;
Bitboard pinned;
MoveStack ttMoves[2], killers[2];
int badCaptureThreshold, phase;
const uint8_t* phasePtr;

7
src/search.cpp
View file

@ -880,6 +880,7 @@ split_point_start: // At split points actual search starts from here
// Initialize a MovePicker object for the current position
MovePickerExt<SpNode, Root> mp(pos, ttMove, depth, H, ss, (PvNode ? -VALUE_INFINITE : beta));
CheckInfo ci(pos);
Bitboard pinned = pos.pinned_pieces(pos.side_to_move());
ss->bestMove = MOVE_NONE;
futilityBase = ss->eval + ss->evalMargin;
singularExtensionNode = !Root
@ -908,7 +909,7 @@ split_point_start: // At split points actual search starts from here
moveCount = ++sp->moveCount;
lock_release(&(sp->lock));
}
else if (move == excludedMove)
else if (move == excludedMove || !pos.pl_move_is_legal(move, pinned))
continue;
else
moveCount++;
@ -1325,6 +1326,7 @@ split_point_start: // At split points actual search starts from here
// be generated.
MovePicker mp(pos, ttMove, depth, H);
CheckInfo ci(pos);
Bitboard pinned = pos.pinned_pieces(pos.side_to_move());
// Loop through the moves until no moves remain or a beta cutoff occurs
while ( alpha < beta
@ -1332,6 +1334,9 @@ split_point_start: // At split points actual search starts from here
{
assert(move_is_ok(move));
if (!pos.pl_move_is_legal(move, pinned))
continue;
givesCheck = pos.move_gives_check(move, ci);
// Futility pruning