[Bug tree-optimization/88149] [9 Regression] ICE in vect_transform_stmt since r265959

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88149

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, the reduced testcase also fails before r265959.  It looks like the issue
is either very old or got introduced with making the SLP tree a graph.  Well,
let's see what tracking down the issue reveals.