From: Jonathan Calovski <jonoface@live.com.au>
Date: Wed, 23 Apr 2014 03:14:46 +0000 (+1000)
Subject: Shuffle movepicker score
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=f70cef3b798384a61be10e11fcd402aeccfd008d

Shuffle movepicker score

Believed to be a speed optimization as benched
on Windows with bench realtime affinity 0x1 deleting
highest and lowest runs:

Base	Test
1549259	1608202
1538115	1583934
1543168	1556938
1536365	1554179
1533026	1582010

Signature remains unchanged and gives anywhere from 1-2% nps
boost in analysis depending on number of cores used.

No functional change.
---

diff --git a/src/movepick.cpp b/src/movepick.cpp
index ce603d18..0c61c30c 100644
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -167,11 +167,11 @@ void MovePicker::score<CAPTURES>() {
       it->value =  PieceValue[MG][pos.piece_on(to_sq(m))]
                  - Value(type_of(pos.moved_piece(m)));
 
-      if (type_of(m) == PROMOTION)
-          it->value += PieceValue[MG][promotion_type(m)] - PieceValue[MG][PAWN];
-
-      else if (type_of(m) == ENPASSANT)
+      if (type_of(m) == ENPASSANT)
           it->value += PieceValue[MG][PAWN];
+
+      else if (type_of(m) == PROMOTION)
+          it->value += PieceValue[MG][promotion_type(m)] - PieceValue[MG][PAWN];
   }
 }