Add iterators and comprehension to emitnative.
diff --git a/unix/mpyconfig.h b/unix/mpyconfig.h
index e5bd06d..3ab17e6 100644
--- a/unix/mpyconfig.h
+++ b/unix/mpyconfig.h
@@ -2,7 +2,7 @@
 
 #define MICROPY_ENABLE_FLOAT        (1)
 #define MICROPY_EMIT_CPYTHON        (0)
-#define MICROPY_EMIT_X64            (0)
+#define MICROPY_EMIT_X64            (1)
 #define MICROPY_EMIT_THUMB          (0)
 #define MICROPY_EMIT_INLINE_THUMB   (0)