From: lucasart <lucas.braesch@gmail.com>
Date: Mon, 18 Jan 2016 22:20:16 +0000 (+0000)
Subject: Retire RootNode template
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=28933a580eeb4b9a2d717f06c789a6c13dfef19c;hp=28933a580eeb4b9a2d717f06c789a6c13dfef19c

Retire RootNode template

There is no reason to compile 3 different copies of search(). PV nodes are on
the cold path, and PvNode is a template parameter, so there is no cost in
computing:

const bool RootNode = PvNode && (ss-1)->ply == 0;

And this simplifies code a tiny bit as well.

Speed impact is negligible on my machine (i7-3770k, linux 4.2, gcc 5.2):

            nps   +/-
test    2378605  3118
master  2383128  2793
diff      -4523  2746

Bench: 7751425

No functional change.

Resolves #568
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