Retire 'os' flag from Makefile

[stockfish] / src / movepick.cpp

diff --git a/src/movepick.cpp b/src/movepick.cpp
index 0c61c30c07ef937e75bfc7af63c8d2e6343d6751..9411b5a701d34ef4070b64d14213016b45766426 100644 (file)
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -51,7 +51,7 @@ namespace {
 
   // Unary predicate used by std::partition to split positive values from remaining
   // ones so as to sort the two sets separately, with the second sort delayed.
-  inline bool has_positive_value(const ExtMove& ms) { return ms.value > 0; }
+  inline bool has_positive_value(const ExtMove& move) { return move.value > 0; }
 
   // Picks the best move in the range (begin, end) and moves it to the front.
   // It's faster than sorting all the moves in advance when there are few
@@ -61,7 +61,7 @@ namespace {
       std::swap(*begin, *std::max_element(begin, end));
       return begin;
   }
-}
+} // namespace
 
 
 /// Constructors of the MovePicker class. As arguments we pass information
@@ -103,15 +103,8 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const HistoryStats&
       stage = QSEARCH_0;
 
   else if (d > DEPTH_QS_RECAPTURES)
-  {
       stage = QSEARCH_1;
 
-      // Skip TT move if is not a capture or a promotion. This avoids qsearch
-      // tree explosion due to a possible perpetual check or similar rare cases
-      // when TT table is full.
-      if (ttm && !pos.capture_or_promotion(ttm))
-          ttm = MOVE_NONE;
-  }
   else
   {
       stage = RECAPTURE;
@@ -283,6 +276,8 @@ void MovePicker::generate_next_stage() {
 
   case EVASION: case QSEARCH_0: case QSEARCH_1: case PROBCUT: case RECAPTURE:
       stage = STOP;
+      /* Fall through */
+
   case STOP:
       end = cur + 1; // Avoid another next_phase() call
       return;
@@ -328,8 +323,8 @@ Move MovePicker::next_move<false>() {
       case KILLERS_S1:
           move = (cur++)->move;
           if (    move != MOVE_NONE
-              &&  pos.pseudo_legal(move)
               &&  move != ttMove
+              &&  pos.pseudo_legal(move)
               && !pos.capture(move))
               return move;
           break;