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Don't use TT just to save a node evaluation

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In search(), after we evalute the position, in case there
isn't any TT entry we create one with just the evaluation
score.

This patches removes that code. The reason becuase the patch
deserves a single commit it is becuase introduces a (very small)
functional change due to the fact that the total number of
TT stores is less now and this slightly alters the TT hits
of our benchmark.

bench: 4983262
This commit is contained in:
Marco Costalba
2012-12-01 15:12:18 +01:00
parent a5ea3a202e
commit 2a585b63b8
1 changed files with 0 additions and 4 deletions
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4
src/search.cpp
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@@ -585,10 +585,6 @@ namespace {
|| ((tte->type() & BOUND_UPPER) && ttValue < eval)) || ((tte->type() & BOUND_UPPER) && ttValue < eval))
eval = ttValue; eval = ttValue;
} }
if (!tte)
TT.store(posKey, VALUE_NONE, BOUND_NONE, DEPTH_NONE, MOVE_NONE,
ss->staticEval, ss->evalMargin);
} }
// Update gain for the parent non-capture move given the static position // Update gain for the parent non-capture move given the static position