From: Marco Costalba <mcostalba@gmail.com>
Date: Thu, 27 Dec 2012 11:13:31 +0000 (+0100)
Subject: Revert evaluation cache
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=3cf6471738dc704ddf553d5f8d2dc9875c2ccbe7;hp=3cf6471738dc704ddf553d5f8d2dc9875c2ccbe7;p=stockfish

Revert evaluation cache

And return on using TT as backing store for position
evaluations.

Tests (even on single thread) show eval cache was a regression.
In multi thread result should be even worst because eval cache
is a per-thread struct, while TT is shared.

After 4957 games at 15"+0.05 (single thread)
eval cache vs master 969 - 1093 - 2895  -9 ELO

So previous reported result of +18 ELO was probably due to an
issue in the testing framework (a bug in cutechess-cli) that
has been fixed in the meanwhile.

bench: 5386711
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