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Micro optimization of generate_piece_moves()

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This patch make the piece list always terminated by SQ_NONE,
so that we can use a simpler and faster loop in move
generation.

Speedup is about 0.6%.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-09-23 21:45:32 +01:00
parent dcb323bf0d
commit 48b74142ef
3 changed files with 12 additions and 4 deletions
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5
src/position.h
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@@ -193,6 +193,7 @@ public:
// Piece lists
Square piece_list(Color c, PieceType pt, int index) const;
const Square* piece_list_begin(Color c, PieceType pt) const;
// Information about attacks to or from a given square
Bitboard attackers_to(Square s) const;
@@ -403,6 +404,10 @@ inline Square Position::piece_list(Color c, PieceType pt, int index) const {
return pieceList[c][pt][index];
}
inline const Square* Position::piece_list_begin(Color c, PieceType pt) const {
return pieceList[c][pt];
}
inline Square Position::ep_square() const {
return st->epSquare;
}