[Bug target/101900] -mtune-ctrl=use_vector_fp_converts,use_vector_converts doesn't work with AVX

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101900

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 51301
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51301&action=edit
A patch