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Micro optimize pawn moves generation
authorMarco Costalba <mcostalba@gmail.com>
Tue, 14 Jul 2009 06:53:22 +0000 (08:53 +0200)
committerMarco Costalba <mcostalba@gmail.com>
Tue, 14 Jul 2009 09:28:29 +0000 (10:28 +0100)
It is very rare we have pawns on 7(2) rank, so we
can skip the promotion handling stuff in most cases.

With this patch pawn moves generation is almost 20% faster.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

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