Unroll color loops in get_pawn_info

[stockfish] / src / pawns.h

diff --git a/src/pawns.h b/src/pawns.h
index 9dc08a669e1a63e24d9f47e2053aa0d3f19061c2..afb456c9036bdd483181b2e3403ca423ce4eb056 100644 (file)
--- a/src/pawns.h
+++ b/src/pawns.h
@@ -45,12 +45,13 @@ class PawnInfo {
   friend class PawnInfoTable;
 
 public:
-  PawnInfo() : key(0) { clear(); }
+  PawnInfo() { clear(); }
 
   Value mg_value() const;
   Value eg_value() const;
   Value kingside_storm_value(Color c) const;
   Value queenside_storm_value(Color c) const;
+  Bitboard pawn_attacks(Color c) const;
   Bitboard passed_pawns() const;
   int file_is_half_open(Color c, File f) const;
   int has_open_file_to_left(Color c, File f) const;
@@ -63,6 +64,7 @@ private:
 
   Key key;
   Bitboard passedPawns;
+  Bitboard pawnAttacks[2];
   int16_t mgValue, egValue;
   int16_t ksStormValue[2], qsStormValue[2];
   uint8_t halfOpenFiles[2];
@@ -83,6 +85,11 @@ public:
   PawnInfo* get_pawn_info(const Position& pos);
 
 private:
+  typedef std::pair<Value, Value> Values;
+
+  template<Color Us>
+  Values evaluate_pawns(const Position& pos, Bitboard ourPawns, Bitboard theirPawns, PawnInfo* pi);
+
   unsigned size;
   PawnInfo* entries;
 };
@@ -104,6 +111,10 @@ inline Bitboard PawnInfo::passed_pawns() const {
   return passedPawns;
 }
 
+inline Bitboard PawnInfo::pawn_attacks(Color c) const {
+  return pawnAttacks[c];
+}
+
 inline Value PawnInfo::kingside_storm_value(Color c) const {
   return Value(ksStormValue[c]);
 }