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Retire CheckInfo

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Move its content directly under StateInfo.

Verified for no speed regression.

No functional change.
This commit is contained in:
Marco Costalba
2016-08-27 10:05:42 +02:00
parent 0b944c7186
commit 1ee2838214
4 changed files with 33 additions and 42 deletions
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25
src/position.h
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@@ -42,16 +42,6 @@ namespace PSQT {
}
/// CheckInfo struct keeps info used to detect if a move gives check
struct CheckInfo {
Bitboard blockersForKing[COLOR_NB];
Bitboard checkSquares[PIECE_TYPE_NB];
Square ksq;
};
/// StateInfo struct stores information needed to restore a Position object to
/// its previous state when we retract a move. Whenever a move is made on the
/// board (by calling Position::do_move), a StateInfo object must be passed.
@@ -73,7 +63,8 @@ struct StateInfo {
Bitboard checkersBB;
PieceType capturedType;
StateInfo* previous;
CheckInfo ci;
Bitboard blockersForKing[COLOR_NB];
Bitboard checkSquares[PIECE_TYPE_NB];
};
// In a std::deque references to elements are unaffected upon resizing
@@ -122,7 +113,7 @@ public:
Bitboard checkers() const;
Bitboard discovered_check_candidates() const;
Bitboard pinned_pieces(Color c) const;
const CheckInfo& check_info() const;
Bitboard check_squares(PieceType pt) const;
// Attacks to/from a given square
Bitboard attackers_to(Square s) const;
@@ -184,7 +175,7 @@ private:
// Initialization helpers (used while setting up a position)
void set_castling_right(Color c, Square rfrom);
void set_state(StateInfo* si) const;
void set_check_info(CheckInfo* ci) const;
void set_check_info(StateInfo* si) const;
// Other helpers
void put_piece(Color c, PieceType pt, Square s);
@@ -311,15 +302,15 @@ inline Bitboard Position::checkers() const {
}
inline Bitboard Position::discovered_check_candidates() const {
return st->ci.blockersForKing[~sideToMove] & pieces(sideToMove);
return st->blockersForKing[~sideToMove] & pieces(sideToMove);
}
inline Bitboard Position::pinned_pieces(Color c) const {
return st->ci.blockersForKing[c] & pieces(c);
return st->blockersForKing[c] & pieces(c);
}
inline const CheckInfo& Position::check_info() const {
return st->ci;
inline Bitboard Position::check_squares(PieceType pt) const {
return st->checkSquares[pt];
}
inline bool Position::pawn_passed(Color c, Square s) const {