Remove redundant PvNode condition

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index d1b717b47124fece1fc71255ad68f6a4da90f2e7..a36601bffc48f6965652694e886747c4a29a838a 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -549,6 +549,7 @@ namespace {
     assert(-VALUE_INFINITE <= alpha && alpha < beta && beta <= VALUE_INFINITE);
     assert(PvNode || (alpha == beta - 1));
     assert(DEPTH_ZERO < depth && depth < DEPTH_MAX);
+    assert(!(PvNode && cutNode));
 
     Move pv[MAX_PLY+1], quietsSearched[64];
     StateInfo st;
@@ -823,7 +824,7 @@ moves_loop: // When in check search starts from here
     CheckInfo ci(pos);
     value = bestValue; // Workaround a bogus 'uninitialized' warning under gcc
     improving =   ss->staticEval >= (ss-2)->staticEval
-               || ss->staticEval == VALUE_NONE
+            /* || ss->staticEval == VALUE_NONE Already implicit in the previous condition */
                ||(ss-2)->staticEval == VALUE_NONE;
 
     singularExtensionNode =   !rootNode
@@ -963,7 +964,7 @@ moves_loop: // When in check search starts from here
                      +    (fmh2 ? (*fmh2)[moved_piece][to_sq(move)] : VALUE_ZERO);
 
           // Increase reduction for cut nodes
-          if (!PvNode && cutNode)
+          if (cutNode)
               r += 2 * ONE_PLY;
 
           // Decrease reduction for moves that escape a capture. Filter out