Allow prefetching on non-x86 platforms with gcc

[stockfish] / src / misc.cpp

diff --git a/src/misc.cpp b/src/misc.cpp
index fefa8d4f33cbd2dd7a74ff57f6a481e14468025b..167eedb3250517ed7c0106cd3a1c3c56b7143a86 100644 (file)
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -237,8 +237,13 @@ void prefetch(char* addr) {
    __asm__ ("");
 #  endif
 
+#  if defined(__INTEL_COMPILER) || defined(__ICL) || defined(_MSC_VER)
   _mm_prefetch(addr, _MM_HINT_T2);
   _mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead
+#  else
+  __builtin_prefetch(addr);
+  __builtin_prefetch(addr+64);
+#  endif
 }
 
 #endif