[Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68263

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #2)
> The maximum stack alignment is 4 byte for IA MCU.  That is why
> reload generates misaligned load/store.

It looks to me that BIGGEST_ALIGNMENT is defined in a wrong way. If you want to
use SSE with TARGET_IAMCU, then it needs to be defined to 128.