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Do not copy the whole old state in do_move()
authorMarco Costalba <mcostalba@gmail.com>
Mon, 23 Feb 2009 11:06:06 +0000 (12:06 +0100)
committerMarco Costalba <mcostalba@gmail.com>
Mon, 23 Feb 2009 20:44:29 +0000 (21:44 +0100)
Instead of copy the old state in the new one, copy only
fields that will be updated incrementally, not the ones
that will be recalculcated anyway.

This let us copy 13 bytes instead of 28 for each do_move()
call.

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

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