[Bug tree-optimization/94964] [8/9/10/11 Regression] ICE in add_phi_arg, at tree-phinodes.c:359 since r8-2993-ga7976089dba5e227

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94964

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
   Target Milestone|---                         |8.5
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.  The loop does not have a preheader we can sink to so
gsi_insert_seq_on_edge_immediate will split the edge and the following
add_phi_arg breaks.

Now, the loop entry edge is an EH edge in this case, will dig what
the appropriate solution is.