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Microptimize pawns info access

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Avoid indirect calling of piece_of_color_and_type(c, PAWN) and its
alias pawns(c) in the pawn evaluation loop, but use the pawns
bitboards accessed only once before entering the loop.

Also explicitly mark functions as static to better self-document.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-07-03 12:28:11 +02:00
parent 5d79af9e0d
commit 48b0d41220
2 changed files with 24 additions and 19 deletions
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29
src/position.h
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@@ -244,12 +244,13 @@ public:
// Information about pawns
bool pawn_is_passed(Color c, Square s) const;
bool pawn_is_isolated(Color c, Square s) const;
bool pawn_is_doubled(Color c, Square s) const;
static bool pawn_is_passed(Bitboard theirPawns, Color c, Square s);
static bool pawn_is_isolated(Bitboard ourPawns, Square s);
static bool pawn_is_doubled(Bitboard ourPawns, Color c, Square s);
// Open and half-open files
bool file_is_open(File f) const;
bool file_is_half_open(Color c, File f) const;
static bool file_is_open(Bitboard pawns, File f);
static bool file_is_half_open(Bitboard pawns, File f);
// Weak squares
bool square_is_weak(Square s, Color c) const;
@@ -591,20 +592,24 @@ inline bool Position::pawn_is_passed(Color c, Square s) const {
return !(pawns(opposite_color(c)) & passed_pawn_mask(c, s));
}
inline bool Position::pawn_is_isolated(Color c, Square s) const {
return !(pawns(c) & neighboring_files_bb(s));
inline bool Position::pawn_is_passed(Bitboard theirPawns, Color c, Square s) {
return !(theirPawns & passed_pawn_mask(c, s));
}
inline bool Position::pawn_is_doubled(Color c, Square s) const {
return pawns(c) & squares_behind(c, s);
inline bool Position::pawn_is_isolated(Bitboard ourPawns, Square s) {
return !(ourPawns & neighboring_files_bb(s));
}
inline bool Position::file_is_open(File f) const {
return !(pawns() & file_bb(f));
inline bool Position::pawn_is_doubled(Bitboard ourPawns, Color c, Square s) {
return ourPawns & squares_behind(c, s);
}
inline bool Position::file_is_half_open(Color c, File f) const {
return !(pawns(c) & file_bb(f));
inline bool Position::file_is_open(Bitboard pawns, File f) {
return !(pawns & file_bb(f));
}
inline bool Position::file_is_half_open(Bitboard pawns, File f) {
return !(pawns & file_bb(f));
}
inline bool Position::square_is_weak(Square s, Color c) const {