[Bug middle-end/109821] vect: Different output with -O2 -ftree-loop-vectorize compared to -O2

[yinyuefengyi at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109821

--- Comment #2 from Xionghu Luo (luoxhu at gcc dot gnu.org) <yinyuefengyi at gmail dot com> ---
(In reply to Andrew Pinski from comment #1)
> Two issues which make this undefined. First the unaligned macros still use
> aligned types which gcc uses for alignment of the pointer type.

Thanks Andrew :), and the second issue is?