[Bug rtl-optimization/64081] [5 Regression] r217827 prevents RTL loop unroll

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64081
Bug 64081 depends on bug 64676, which changed state.

Bug 64676 Summary: [5 Regression] SEGV in tree-ssa-structalias.c 
solve_constraint
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64676

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED