--- a/kernels/volk/volk_32f_index_max_16u.h 2016-07-28 15:53:26
+++ b/kernels/volk/volk_32f_index_max_16u.h 2018-06-25 11:28:31
@@ -143,6 +143,23 @@

 #include <xmmintrin.h>

+/*
+ * To bypass an Optimizer bug in MSVC-2017.
+ * Ref:
+ *   https://developercommunity.visualstudio.com/content/problem/215602/new-optimizer-code-generation-bug.html
+ *
+ * Turn off all optimizations for this function.
+ */
+#if defined(_MSC_VER) && !defined(__clang__)
+  #define OPTIMIZE_OFF()  __pragma (optimize ("g", off));
+  #define OPTIMIZE_DEF()  __pragma (optimize ("", on));
+#else
+  #define OPTIMIZE_OFF()
+  #define OPTIMIZE_DEF()
+#endif
+
+OPTIMIZE_OFF()
+
 static inline void
 volk_32f_index_max_16u_a_sse(uint16_t* target, const float* src0,
                              uint32_t num_points)
@@ -200,6 +217,8 @@
   target[0] = (uint16_t)index;
 }

+OPTIMIZE_DEF()
+
 #endif /*LV_HAVE_SSE*/