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https://github.com/sockspls/badfish
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Unify single MobilityBonus[] tables in a big single one
Avoid one address lookup in a very critical time path. Unified also outpost bonus tables for knights and bishops. No functional change. Signed-off-by: Marco Costalba <mcostalba@gmail.com>
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Marco Costalba
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421867ea2d
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1 changed files with 41 additions and 64 deletions
105
src/evaluate.cpp
105
src/evaluate.cpp
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@ -61,72 +61,48 @@ namespace {
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S(248, 271), S(233, 201), S(252, 259), S(46, 0), S(247, 0), S(259, 0)
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};
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// Knight mobility bonus in middle game and endgame, indexed by the number
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// of attacked squares not occupied by friendly piecess.
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const Score KnightMobilityBonus[16] = {
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S(-38,-33), S(-25,-23), S(-12,-13), S( 0,-3),
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S( 12, 7), S( 25, 17), S( 31, 22), S(38, 27), S(38, 27)
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// Pieces mobility bonus in middle game and endgame, indexed by piece type
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// and number of attacked squares not occupied by friendly pieces.
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const Score MobilityBonus[][32] = {
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{}, {},
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{ S(-38,-33), S(-25,-23), S(-12,-13), S( 0, -3), S(12, 7), S(25, 17), // Knights
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S( 31, 22), S( 38, 27), S( 38, 27) },
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{ S(-25,-30), S(-11,-16), S( 3, -2), S(17, 12), S(31, 26), S(45, 40), // Bishops
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S( 57, 52), S( 65, 60), S( 71, 65), S(74, 69), S(76, 71), S(78, 73),
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S( 79, 74), S( 80, 75), S( 81, 76), S(81, 76) },
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{ S(-20,-36), S(-14,-19), S( -8, -3), S(-2, 13), S( 4, 29), S(10, 46), // Rooks
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S( 14, 62), S( 19, 79), S( 23, 95), S(26,106), S(27,111), S(28,114),
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S( 29,116), S( 30,117), S( 31,118), S(32,118) },
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{ S(-10,-18), S( -8,-13), S( -6, -7), S(-3, -2), S(-1, 3), S( 1, 8), // Queens
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S( 3, 13), S( 5, 19), S( 8, 23), S(10, 27), S(12, 32), S(15, 34),
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S( 16, 35), S( 17, 35), S( 18, 35), S(20, 35), S(20, 35), S(20, 35),
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S( 20, 35), S( 20, 35), S( 20, 35), S(20, 35), S(20, 35), S(20, 35),
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S( 20, 35), S( 20, 35), S( 20, 35), S(20, 35), S(20, 35), S(20, 35),
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S( 20, 35), S( 20, 35) }
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};
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// Bishop mobility bonus in middle game and endgame, indexed by the number
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// of attacked squares not occupied by friendly pieces. X-ray attacks through
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// queens are also included.
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const Score BishopMobilityBonus[16] = {
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S(-25,-30), S(-11,-16), S( 3, -2), S(17, 12),
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S( 31, 26), S( 45, 40), S(57, 52), S(65, 60),
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S( 71, 65), S( 74, 69), S(76, 71), S(78, 73),
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S( 79, 74), S( 80, 75), S(81, 76), S(81, 76)
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};
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// Rook mobility bonus in middle game and endgame, indexed by the number
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// of attacked squares not occupied by friendly pieces. X-ray attacks through
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// queens and rooks are also included.
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const Score RookMobilityBonus[16] = {
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S(-20,-36), S(-14,-19), S(-8, -3), S(-2, 13),
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S( 4, 29), S( 10, 46), S(14, 62), S(19, 79),
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S( 23, 95), S( 26,106), S(27,111), S(28,114),
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S( 29,116), S( 30,117), S(31,118), S(32,118)
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};
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// Queen mobility bonus in middle game and endgame, indexed by the number
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// of attacked squares not occupied by friendly pieces.
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const Score QueenMobilityBonus[32] = {
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S(-10,-18), S(-8,-13), S(-6, -7), S(-3, -2), S(-1, 3), S( 1, 8),
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S( 3, 13), S( 5, 19), S( 8, 23), S(10, 27), S(12, 32), S(15, 34),
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S( 16, 35), S(17, 35), S(18, 35), S(20, 35), S(20, 35), S(20, 35),
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S( 20, 35), S(20, 35), S(20, 35), S(20, 35), S(20, 35), S(20, 35),
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S( 20, 35), S(20, 35), S(20, 35), S(20, 35), S(20, 35), S(20, 35),
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S( 20, 35), S(20, 35)
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};
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// Pointers table to access mobility tables through piece type
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const Score* MobilityBonus[8] = { 0, 0, KnightMobilityBonus, BishopMobilityBonus,
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RookMobilityBonus, QueenMobilityBonus, 0, 0 };
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// Outpost bonuses for knights and bishops, indexed by square (from white's
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// point of view).
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const Value KnightOutpostBonus[64] = {
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const Value OutpostBonus[][64] = {
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{
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// A B C D E F G H
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // 1
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // 2
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V(0), V(0), V(4), V(8), V(8), V(4), V(0), V(0), // 3
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V(0), V(4),V(17),V(26),V(26),V(17), V(4), V(0), // 4
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V(0), V(8),V(26),V(35),V(35),V(26), V(8), V(0), // 5
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V(0), V(4),V(17),V(17),V(17),V(17), V(4), V(0), // 6
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // 7
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) // 8
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};
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const Value BishopOutpostBonus[64] = {
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// A B C D E F G H
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // 1
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // 2
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V(0), V(0), V(5), V(5), V(5), V(5), V(0), V(0), // 3
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V(0), V(5),V(10),V(10),V(10),V(10), V(5), V(0), // 4
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V(0),V(10),V(21),V(21),V(21),V(21),V(10), V(0), // 5
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V(0), V(5), V(8), V(8), V(8), V(8), V(5), V(0), // 6
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // 7
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) // 8
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // Knights
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0),
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V(0), V(0), V(4), V(8), V(8), V(4), V(0), V(0),
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V(0), V(4),V(17),V(26),V(26),V(17), V(4), V(0),
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V(0), V(8),V(26),V(35),V(35),V(26), V(8), V(0),
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V(0), V(4),V(17),V(17),V(17),V(17), V(4), V(0),
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0),
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) },
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{
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0), // Bishops
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0),
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V(0), V(0), V(5), V(5), V(5), V(5), V(0), V(0),
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V(0), V(5),V(10),V(10),V(10),V(10), V(5), V(0),
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V(0),V(10),V(21),V(21),V(21),V(21),V(10), V(0),
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V(0), V(5), V(8), V(8), V(8), V(8), V(5), V(0),
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0),
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V(0), V(0), V(0), V(0), V(0), V(0), V(0), V(0) }
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};
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// ThreatBonus[attacking][attacked] contains bonus according to which
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@ -319,7 +295,7 @@ Value do_evaluate(const Position& pos, EvalInfo& ei) {
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// Middle-game specific evaluation terms
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if (phase > PHASE_ENDGAME)
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{
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// Pawn storms in positions with opposite castling
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// Evaluate pawn storms in positions with opposite castling
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if ( square_file(pos.king_square(WHITE)) >= FILE_E
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&& square_file(pos.king_square(BLACK)) <= FILE_D)
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@ -465,9 +441,10 @@ namespace {
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const Color Them = (Us == WHITE ? BLACK : WHITE);
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assert (Piece == BISHOP || Piece == KNIGHT);
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// Initial bonus based on square
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Value bonus = (Piece == BISHOP ? BishopOutpostBonus[relative_square(Us, s)]
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: KnightOutpostBonus[relative_square(Us, s)]);
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Value bonus = OutpostBonus[Piece == BISHOP][relative_square(Us, s)];
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// Increase bonus if supported by pawn, especially if the opponent has
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// no minor piece which can exchange the outpost piece
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