Simplify king shelter cache handling

[stockfish] / src / bitboard.cpp

diff --git a/src/bitboard.cpp b/src/bitboard.cpp
index 18b7bb28206d5db0d0a23c026b2caf12558fc466..9bd16d2f66a96e60be496258ea550fc6bcb6277a 100644 (file)
--- a/src/bitboard.cpp
+++ b/src/bitboard.cpp
@@ -233,6 +233,8 @@ Bitboard BishopPseudoAttacks[64];
 Bitboard RookPseudoAttacks[64];
 Bitboard QueenPseudoAttacks[64];
 
+uint8_t BitCount8Bit[256];
+
 
 ////
 //// Local definitions
@@ -382,6 +384,9 @@ namespace {
           in_front_bb(c, s) & this_and_neighboring_files_bb(s);
         OutpostMask[c][s] = in_front_bb(c, s) & neighboring_files_bb(s);
       }
+
+    for (Bitboard b = 0ULL; b < 256ULL; b++)
+        BitCount8Bit[b] = (uint8_t)count_1s(b);
   }