https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110018
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> --- > Currently, when modifier is NONE, vectorizable_conversion doesn't try any > immediate type, it can be extended similar like WIDEN. > After gdb the testcase, the modifier is not NONE, it's widen from V8QI to V4DF, and failed.
