official-stockfish/Stockfish — pull request #179 by mcostalba (2014-12-31 10:00:34+00:00)
Title: Retire Material::space_weight()

This is a nice simplification but could potentially introduce a speed regression so I run a test on it.

Speed bench is not enough IMO becuase space iscomputed only in the opening so bench is not representative enough of wat really happens.