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Use thread_local compiler specifics

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Much faster then pthread_getspecific() but still a
speed regression against the original code.

Following are the nps on a bench:

Position
454165
454838
455433

tls
441046
442767
442767

ms (Win)
450521
447510
451105

ms (pthread)
422115
422115
424276

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-04-06 17:01:41 +01:00
parent bed4075580
commit b1f57e92ce
7 changed files with 17 additions and 24 deletions
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4
src/position.cpp
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@@ -895,8 +895,8 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
}
// Prefetch pawn and material hash tables
prefetch((char*)Threads.this_thread()->pawnTable.entries[st->pawnKey]);
prefetch((char*)Threads.this_thread()->materialTable.entries[st->materialKey]);
prefetch((char*)this_thread->pawnTable.entries[st->pawnKey]);
prefetch((char*)this_thread->materialTable.entries[st->materialKey]);
// Update incremental scores
st->psqScore += psq_delta(piece, from, to);