[Bug tree-optimization/82337] [5/6/7/8 Regression] ICE: SSA corruption at tree-ssa-coalesce.c:1010

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82337

--- Comment #9 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Revised and tested patch posted here: 
https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01836.html