Tweak check extension condition

[stockfish] / src / bitboard.h

diff --git a/src/bitboard.h b/src/bitboard.h
index a0f7ea8d69b0bfe325f4ceb060d0a91f49055210..390966e3494273969bdb53a50c6953a6c9782611 100644 (file)
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -272,10 +272,6 @@ inline int popcount(Bitboard b) {
 
   return (int)_mm_popcnt_u64(b);
 
-#elif defined(_MSC_VER)
-
-  return (int)__popcnt64(b);
-
 #else // Assumed gcc or compatible compiler
 
   return __builtin_popcountll(b);