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Remove pawn_attacks_bb()

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Generalize attacks_bb() to handle pawns and remove pawn_attacks_bb()

https://tests.stockfishchess.org/tests/view/67e9496231d7cf8afdc44a2e
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 134688 W: 34660 L: 34553 D: 65475
Ptnml(0-2): 298, 14619, 37462, 14608, 357

closes https://github.com/official-stockfish/Stockfish/pull/5947

No functional change
This commit is contained in:
mstembera
2025-04-02 17:39:40 +02:00
committed by Disservin
parent d2cb927a04
commit 1a395f1b56
4 changed files with 15 additions and 22 deletions
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src/bitboard.cpp
+2 -3
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@@ -32,7 +32,6 @@ uint8_t SquareDistance[SQUARE_NB][SQUARE_NB];
Bitboard LineBB[SQUARE_NB][SQUARE_NB];
Bitboard BetweenBB[SQUARE_NB][SQUARE_NB];
Bitboard PseudoAttacks[PIECE_TYPE_NB][SQUARE_NB];
Bitboard PawnAttacks[COLOR_NB][SQUARE_NB];
alignas(64) Magic Magics[SQUARE_NB][2];
@@ -86,8 +85,8 @@ void Bitboards::init() {
for (Square s1 = SQ_A1; s1 <= SQ_H8; ++s1)
{
PawnAttacks[WHITE][s1] = pawn_attacks_bb<WHITE>(square_bb(s1));
PawnAttacks[BLACK][s1] = pawn_attacks_bb<BLACK>(square_bb(s1));
PseudoAttacks[WHITE][s1] = pawn_attacks_bb<WHITE>(square_bb(s1));
PseudoAttacks[BLACK][s1] = pawn_attacks_bb<BLACK>(square_bb(s1));
for (int step : {-9, -8, -7, -1, 1, 7, 8, 9})
PseudoAttacks[KING][s1] |= safe_destination(s1, step);