https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98221

--- Comment #3 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
tree-vect-loop-manip.c: vect_maybe_permute_loop_masks also emits
VEC_UNPACKS_HI/LO dependent on BYTES_BIG_ENDIAN.

What is the expectation wrt the meaning of hi/lo in RTL standard names? I
couldn't find it clearly documented for this either. Well, for things like
'smulm3_highpart' we say it is about the 'most significant half' but I don't
see anything for the vector hi/lo.

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