https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66554
--- Comment #2 from kugan at gcc dot gnu.org --- can_fix_p is returining CODE_FOR_nothing for converting from tomode=V4SImode to frommode=V4SFmode with branch 4.9. With trunk it is returning CODE_FOR_fix_truncv4sfv4si2.
