Reduce the number of accumulator states

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index 56cb34e8ec3c39d7e4219e957c032c1d997627d1..ba015d3c38edb3cf87be062f952f4fbcec568cc4 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -282,8 +282,6 @@ Position& Position::set(const string& fenStr, bool isChess960, StateInfo* si, Th
   chess960 = isChess960;
   thisThread = th;
   set_state(st);
-  st->accumulator.state[WHITE] = Eval::NNUE::INIT;
-  st->accumulator.state[BLACK] = Eval::NNUE::INIT;
 
   assert(pos_is_ok());
 
@@ -704,8 +702,8 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
   ++st->pliesFromNull;
 
   // Used by NNUE
-  st->accumulator.state[WHITE] = Eval::NNUE::EMPTY;
-  st->accumulator.state[BLACK] = Eval::NNUE::EMPTY;
+  st->accumulator.computed[WHITE] = false;
+  st->accumulator.computed[BLACK] = false;
   auto& dp = st->dirtyPiece;
   dp.dirty_num = 1;
 
@@ -1005,8 +1003,8 @@ void Position::do_null_move(StateInfo& newSt) {
 
   st->dirtyPiece.dirty_num = 0;
   st->dirtyPiece.piece[0] = NO_PIECE; // Avoid checks in UpdateAccumulator()
-  st->accumulator.state[WHITE] = Eval::NNUE::EMPTY;
-  st->accumulator.state[BLACK] = Eval::NNUE::EMPTY;
+  st->accumulator.computed[WHITE] = false;
+  st->accumulator.computed[BLACK] = false;
 
   if (st->epSquare != SQ_NONE)
   {