Prefetch

1 files changed, 15 insertions, 0 deletions

diff --git a/src/utils/prefetch.h b/src/utils/prefetch.h
new file mode 100644
index 0000000..89b14e8
--- /dev/null
+++ b/src/utils/prefetch.h
@@ -0,0 +1,15 @@
+#if defined(AVX2)
+
+#define prefetch(a, i) _mm_prefetch(a+i, _MM_HINT_T0)
+
+#else
+#if defined(__GNUC__) || defined(__clang__)
+
+#define prefetch(a, i) __builtin_prefetch(a+i, 0, 0)
+
+#else
+
+#define prefetch(a, i) (void)i
+
+#endif
+#endif