[Bug target/70118] UBSan claims misaligned access in SSE instrinsics

[linux at carewolf dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70118

--- Comment #4 from Allan Jensen <linux at carewolf dot com> ---
Created attachment 40130
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40130&action=edit
Proposed patch

On closer inspection, we are only almost there, two minor changes are still
needed. (testing patch).