Retire __popcnt64 intrinsic

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index e45d2674fe70a1b3d293d7d848404f621c4de10c..10dfdb07183d1a09c7f8b281f8b71bb1e7301445 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -60,12 +60,12 @@
 /// _WIN64             Building on Windows 64 bit
 
 #if defined(_WIN64) && defined(_MSC_VER) // No Makefile used
 /// _WIN64             Building on Windows 64 bit
 
 #if defined(_WIN64) && defined(_MSC_VER) // No Makefile used

-#  include <intrin.h> // MSVC popcnt and bsfq instrinsics
+#  include <intrin.h> // Microsoft header for _BitScanForward64()

 #  define IS_64BIT
 #endif
 
 #if defined(USE_POPCNT) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
 #  define IS_64BIT
 #endif
 
 #if defined(USE_POPCNT) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))

-#  include <nmmintrin.h> // Intel header for _mm_popcnt_u64() intrinsic
+#  include <nmmintrin.h> // Intel and Microsoft header for _mm_popcnt_u64()

 #endif
 
 #if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
 #endif
 
 #if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))