Do not refresh TT in qsearch

Almost no change and simplifies a bit the code.

After 961 games at 1+0
Mod vs Orig +156 =650 -146  +4 ELO

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/search.cpp b/src/search.cpp
index 1f980fbb78038d6cf098e1b3cafaa37761bfd808..ec884b3c145afc20dbcdff887e056ba671552827 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1627,9 +1627,6 @@ namespace {
     {
         assert(tte->type() != VALUE_TYPE_EVAL);
 
-        // Refresh tte entry to avoid aging
-        TT.store(pos.get_key(), tte->value(), tte->type(), tte->depth(), ttMove);
-
         ss[ply].currentMove = ttMove; // Can be MOVE_NONE
         return value_from_tt(tte->value(), ply);
     }