[Bug bootstrap/86621] [9 regression] 'alloca' bound is unknown in tree-vect-slp.c:1437:16

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86621

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
i686 target is ok on x86-64 host. The problem
is 32 bit host.