[Bug ipa/99517] __builtin_convertvector with casts

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99517

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 50353
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50353&action=edit
gcc11-pr99517.patch

Untested fix.