[Bug tree-optimization/69062] invalid PHI argument error with ftree-parallelize-loops=2

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69062

--- Comment #1 from vries at gcc dot gnu.org ---
Tentative patch at: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69039#c8