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Reintroduce permanent PV entries in TT

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We are now ready to release so restore this
improvment before 2.1

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-05-03 09:54:22 +02:00
parent 9c5a53ca45
commit 5ef2b8c494
1 changed files with 1 additions and 1 deletions
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2
src/tt.cpp
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@ -107,7 +107,7 @@ void TranspositionTable::store(const Key posKey, Value v, ValueType t, Depth d,
// Implement replace strategy
c1 = (replace->generation() == generation ? 2 : 0);
c2 = (tte->generation() == generation ? -2 : 0);
c2 = (tte->generation() == generation || tte->type() == VALUE_TYPE_EXACT ? -2 : 0);
c3 = (tte->depth() < replace->depth() ? 1 : 0);
if (c1 + c2 + c3 > 0)