From: Marco Costalba <mcostalba@gmail.com>
Date: Mon, 18 Jan 2010 14:47:43 +0000 (+0100)
Subject: Avoid an useless evaluate() call
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=0edad63b440a81f764efd168b0bd5733850095ae

Avoid an useless evaluate() call

Now that we have position static score we don't
need to call evaluate() a second time.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/search.cpp b/src/search.cpp
index 403c9363..76a4e7a9 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1457,7 +1457,7 @@ namespace {
 
     // Go with internal iterative deepening if we don't have a TT move
     if (UseIIDAtNonPVNodes && ttMove == MOVE_NONE && depth >= 8*OnePly &&
-        !isCheck && evaluate(pos, ei, threadID) >= beta - IIDMargin)
+        !isCheck && ss[ply].eval >= beta - IIDMargin)
     {
         search(pos, ss, beta, Min(depth/2, depth-2*OnePly), ply, false, threadID);
         ttMove = ss[ply].pv[ply];