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Re-enable TT.insert_pv()

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This time make sure that valuable TTentries are not overwritten.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Joona Kiiski
2009-12-08 19:19:13 +02:00
committed by Marco Costalba
parent d0b8bc5fdf
commit b056e5d40a
2 changed files with 4 additions and 2 deletions
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4
src/tt.cpp
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@@ -208,7 +208,9 @@ void TranspositionTable::insert_pv(const Position& pos, Move pv[]) {
for (int i = 0; pv[i] != MOVE_NONE; i++)
{
store(p.get_key(), VALUE_NONE, VALUE_TYPE_NONE, Depth(-127*OnePly), pv[i]);
TTEntry *tte = retrieve(p.get_key());
if (!tte || tte->move() != pv[i])
store(p.get_key(), VALUE_NONE, VALUE_TYPE_NONE, Depth(-127*OnePly), pv[i]);
p.do_move(pv[i], st);
}
}