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Code Issues Releases Wiki Activity

Avoid recalculating CheckInfo in generate_castling()

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No functional change.
This commit is contained in:
Marco Costalba 2014-02-20 08:27:13 +01:00
parent 64a71c3c02
commit 9fcefb2760
1 changed files with 10 additions and 8 deletions
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18
src/movegen.cpp
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@ -32,7 +32,7 @@
namespace { namespace {
template<CastlingSide Side, bool Checks, bool Chess960> template<CastlingSide Side, bool Checks, bool Chess960>
ExtMove* generate_castling(const Position& pos, ExtMove* mlist, Color us) { ExtMove* generate_castling(const Position& pos, ExtMove* mlist, Color us, const CheckInfo* ci) {
if (pos.castling_impeded(us, Side) || !pos.can_castle(make_castling_flag(us, Side))) if (pos.castling_impeded(us, Side) || !pos.can_castle(make_castling_flag(us, Side)))
return mlist; return mlist;
@ -59,10 +59,12 @@ namespace {
if (Chess960 && (attacks_bb<ROOK>(kto, pos.pieces() ^ rfrom) & pos.pieces(~us, ROOK, QUEEN))) if (Chess960 && (attacks_bb<ROOK>(kto, pos.pieces() ^ rfrom) & pos.pieces(~us, ROOK, QUEEN)))
return mlist; return mlist;
(mlist++)->move = make<CASTLING>(kfrom, rfrom); Move m = make<CASTLING>(kfrom, rfrom);
if (Checks && !pos.gives_check((mlist - 1)->move, CheckInfo(pos))) if (Checks && !pos.gives_check(m, *ci))
--mlist; return mlist;
(mlist++)->move = m;
return mlist; return mlist;
} }
@ -260,13 +262,13 @@ namespace {
{ {
if (pos.is_chess960()) if (pos.is_chess960())
{ {
mlist = generate_castling< KING_SIDE, Checks, true>(pos, mlist, Us); mlist = generate_castling< KING_SIDE, Checks, true>(pos, mlist, Us, ci);
mlist = generate_castling<QUEEN_SIDE, Checks, true>(pos, mlist, Us); mlist = generate_castling<QUEEN_SIDE, Checks, true>(pos, mlist, Us, ci);
} }
else else
{ {
mlist = generate_castling< KING_SIDE, Checks, false>(pos, mlist, Us); mlist = generate_castling< KING_SIDE, Checks, false>(pos, mlist, Us, ci);
mlist = generate_castling<QUEEN_SIDE, Checks, false>(pos, mlist, Us); mlist = generate_castling<QUEEN_SIDE, Checks, false>(pos, mlist, Us, ci);
} }
} }