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Simplify move generation (1/2)

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STC:
LLR: 2.95 (-2.94,2.94) {-1.25,0.25}
Total: 29792 W: 2611 L: 2545 D: 24636
Ptnml(0-2): 94, 1982, 10659, 2086, 75
https://tests.stockfishchess.org/tests/view/604fe5b62433018de7a38ba8

LTC:
LLR: 2.92 (-2.94,2.94) {-0.75,0.25}
Total: 22040 W: 826 L: 777 D: 20437
Ptnml(0-2): 8, 646, 9664, 693, 9
https://tests.stockfishchess.org/tests/view/604fec892433018de7a38bac

Closes https://github.com/official-stockfish/Stockfish/pull/3399

No functional change
This commit is contained in:
bmc4
2021-03-15 19:52:45 -03:00
committed by Stéphane Nicolet
parent 939395729c
commit 4b509559fb
1 changed files with 1 additions and 6 deletions
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7
src/movegen.cpp
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@@ -182,17 +182,12 @@ namespace {
Bitboard bb = piecesToMove & pos.pieces(Pt); Bitboard bb = piecesToMove & pos.pieces(Pt);
if (!bb)
return moveList;
[[maybe_unused]] const Bitboard checkSquares = pos.check_squares(Pt);
while (bb) { while (bb) {
Square from = pop_lsb(&bb); Square from = pop_lsb(&bb);
Bitboard b = attacks_bb<Pt>(from, pos.pieces()) & target; Bitboard b = attacks_bb<Pt>(from, pos.pieces()) & target;
if constexpr (Checks) if constexpr (Checks)
b &= checkSquares; b &= pos.check_squares(Pt);
while (b) while (b)
*moveList++ = make_move(from, pop_lsb(&b)); *moveList++ = make_move(from, pop_lsb(&b));