[Bug tree-optimization/91579] tailr1 pass creates redundant phi nodes

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91579

--- Comment #1 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I proposed a patch on the mailing list:

https://gcc.gnu.org/ml/gcc-patches/2019-08/msg01949.html