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Simplify promotion move generation

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closes https://github.com/official-stockfish/Stockfish/pull/4892

No functional change
This commit is contained in:
cj5716 2023-12-02 11:37:52 +01:00 • committed by Disservin
parent f17db4641e
commit 883163395e
1 changed files with 5 additions and 11 deletions
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16
src/movegen.cpp
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@ -31,18 +31,12 @@ namespace {
template<GenType Type, Direction D, bool Enemy>
ExtMove* make_promotions(ExtMove* moveList, [[maybe_unused]] Square to) {
if constexpr (Type == CAPTURES || Type == EVASIONS || Type == NON_EVASIONS)
{
*moveList++ = make<PROMOTION>(to - D, to, QUEEN);
if constexpr (Enemy && Type == CAPTURES)
{
*moveList++ = make<PROMOTION>(to - D, to, ROOK);
*moveList++ = make<PROMOTION>(to - D, to, BISHOP);
*moveList++ = make<PROMOTION>(to - D, to, KNIGHT);
}
}
constexpr bool all = Type == EVASIONS || Type == NON_EVASIONS;
if constexpr ((Type == QUIETS && !Enemy) || Type == EVASIONS || Type == NON_EVASIONS)
if constexpr (Type == CAPTURES || all)
*moveList++ = make<PROMOTION>(to - D, to, QUEEN);
if constexpr ((Type == CAPTURES && Enemy) || (Type == QUIETS && !Enemy) || all)
{
*moveList++ = make<PROMOTION>(to - D, to, ROOK);
*moveList++ = make<PROMOTION>(to - D, to, BISHOP);