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Use pointers instead of array indices in MovePicker

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This avoids calculating the array entry position
at each access and gives another boost of almost 1%.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-08-28 08:57:52 +02:00
parent 6cf28d4aa7
commit 9e4befe3f1
7 changed files with 106 additions and 109 deletions
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8
src/search.cpp
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@@ -1968,15 +1968,15 @@ namespace {
bool includeAllMoves = (searchMoves[0] == MOVE_NONE);
// Generate all legal moves
int lm_count = generate_legal_moves(pos, mlist);
MoveStack* last = generate_legal_moves(pos, mlist);
// Add each move to the moves[] array
for (int i = 0; i < lm_count; i++)
for (MoveStack* cur = mlist; cur != last; cur++)
{
bool includeMove = includeAllMoves;
for (int k = 0; !includeMove && searchMoves[k] != MOVE_NONE; k++)
includeMove = (searchMoves[k] == mlist[i].move);
includeMove = (searchMoves[k] == cur->move);
if (!includeMove)
continue;
@@ -1985,7 +1985,7 @@ namespace {
StateInfo st;
SearchStack ss[PLY_MAX_PLUS_2];
moves[count].move = mlist[i].move;
moves[count].move = cur->move;
pos.do_move(moves[count].move, st);
moves[count].score = -qsearch(pos, ss, -VALUE_INFINITE, VALUE_INFINITE, Depth(0), 1, 0);
pos.undo_move(moves[count].move);