From cb4ac4221e8a178294c084670eff3fa0414135a8 Mon Sep 17 00:00:00 2001
From: Marco Costalba <mcostalba@gmail.com>
Date: Sun, 27 Apr 2014 00:25:18 +0200
Subject: [PATCH] Speed up by almost 3%

This apparentely silly tweak allows
to speed up the bench by almost 3%.

Not clear why, repeating with perft,
the speed up vanishes.

Suggested by Jonathan Calovski.

No functional change.
---
 src/position.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/position.cpp b/src/position.cpp
index 7b345fd9..6b05c24b 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -821,7 +821,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
           k ^= Zobrist::enpassant[file_of(st->epSquare)];
       }
 
-      if (type_of(m) == PROMOTION)
+      else if (type_of(m) == PROMOTION)
       {
           PieceType promotion = promotion_type(m);
 
-- 
2.39.2