+#if defined(_M_X64) || defined(__x86_64__)
+ // The VS2013 runtime has a bug where it mis-detects AVX-capable processors
+ // if the feature has been disabled in firmware. This causes us to crash
+ // in some of the math functions. For now, we disable those optimizations
+ // because Microsoft is not going to fix the problem in VS2013.
+ // FIXME: http://webkit.org/b/141449: Remove this workaround when we switch to VS2015+.
+ _set_FMA3_enable(0);
+#endif
+