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Optimize attacks

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STC:  https://tests.stockfishchess.org/tests/view/6a57f12c5529b8472df80e2a
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 85856 W: 22400 L: 22037 D: 41419
Ptnml(0-2): 153, 8999, 24290, 9304, 182

closes https://github.com/official-stockfish/Stockfish/pull/6983

No functional change
This commit is contained in:
mstembera
2026-07-20 10:59:45 +02:00
committed by Joost VandeVondele
parent b4ea9205a6
commit d70dec7d6f
4 changed files with 56 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/attacks.cpp
+7 -22
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@@ -24,15 +24,17 @@
namespace Stockfish::Attacks {
namespace {
#ifdef USE_DUAL_HYPERBOLA_QUINT
alignas(64) DualMagic DualMagics[SQUARE_NB];
#endif
Bitboard LineBB[SQUARE_NB][SQUARE_NB];
Bitboard BetweenBB[SQUARE_NB][SQUARE_NB];
Bitboard RayPassBB[SQUARE_NB][SQUARE_NB];
#ifdef USE_DUAL_HYPERBOLA_QUINT
alignas(64) DualMagic DualMagics[SQUARE_NB];
#else
namespace {
#ifndef USE_DUAL_HYPERBOLA_QUINT
alignas(64) Magic Magics[SQUARE_NB][2];
#endif
@@ -187,28 +189,11 @@ void init() {
}
}
#ifdef USE_DUAL_HYPERBOLA_QUINT
const DualMagic& dual_magic(Square s) { return DualMagics[s]; }
#else
#ifndef USE_DUAL_HYPERBOLA_QUINT
const Magic& magic(Square s, PieceType pt) {
assert((pt == BISHOP || pt == ROOK) && is_ok(s));
return Magics[s][pt - BISHOP];
}
#endif
Bitboard line_bb(Square s1, Square s2) {
assert(is_ok(s1) && is_ok(s2));
return LineBB[s1][s2];
}
Bitboard between_bb(Square s1, Square s2) {
assert(is_ok(s1) && is_ok(s2));
return BetweenBB[s1][s2];
}
Bitboard ray_pass_bb(Square s1, Square s2) {
assert(is_ok(s1) && is_ok(s2));
return RayPassBB[s1][s2];
}
} // namespace Stockfish::Attacks