[Bug tree-optimization/101842] Vectorizer doesn't vectorize when loop bound depends on two independent variables that are unknown

[tnfchris at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101842

--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #4)
> (In reply to Tamar Christina from comment #3)
> > (In reply to Richard Biener from comment #2)
> > > OK, so with a hack like the following we vectorize the BB as
> 
> It's applied to my working tree so that's possible.  Note it doesn't
> vectorize the loop but the loop body in basic-block vectorization.

I think that's fine, the actual loop also doesn't use any cross iteration
information so vectorizing the BB is good enough.