Remove unuseful optimization in RKISS

[stockfish] / src / pawns.cpp

diff --git a/src/pawns.cpp b/src/pawns.cpp
index d65b0418f0145f448c3d37dff8ecb7262c86fdaf..37db2cf513e0babdc11b7235da701dfa3311c840 100644 (file)
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -99,7 +99,7 @@ namespace {
     Bitboard ourPawns = pos.pieces(Us, PAWN);
     Bitboard theirPawns = pos.pieces(Them, PAWN);
 
-    e->passedPawns[Us] = 0;
+    e->passedPawns[Us] = e->candidatePawns[Us] = 0;
     e->kingSquares[Us] = SQ_NONE;
     e->semiopenFiles[Us] = 0xFF;
     e->pawnAttacks[Us] = shift_bb<Right>(ourPawns) | shift_bb<Left>(ourPawns);
@@ -179,7 +179,12 @@ namespace {
             value += ChainMember[f];
 
         if (candidate)
+        {
             value += CandidatePassed[relative_rank(Us, s)];
+
+            if (!doubled)
+                e->candidatePawns[Us] |= s;
+        }
     }
 
     return value;
@@ -222,7 +227,7 @@ Value Entry::shelter_storm(const Position& pos, Square ksq) {
   Rank rkUs, rkThem;
   File kf = std::max(FILE_B, std::min(FILE_G, file_of(ksq)));
 
-  for (int f = kf - 1; f <= kf + 1; f++)
+  for (int f = kf - 1; f <= kf + 1; ++f)
   {
       b = ourPawns & FileBB[f];
       rkUs = b ? relative_rank(Us, backmost_sq(Us, b)) : RANK_1;