immintrin.h looks portable to gcc/clang

Author: Jay Krell

lib/Common/Common/NumberUtilities.inl

@@ -10,8 +10,8 @@
 // Attempt to pun int/float without address-taking.
 // This helps compilers.
 
-#if defined(_AMD64_) || _M_IX86_FP >= 2 || defined(__AVX__) || defined(_MSC_VER)
-#include <intrin.h>
+#if defined(_AMD64_) || _M_IX86_FP >= 2 || defined(__AVX__)
+#include <immintrin.h>
 #endif
 
 #if !defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)