[Bug tree-optimization/128394] [16/17 Regression] ICE in gsi_insert_seq_nodes_after, at gimple-iterator.cc:274 from vect_do_peeling at -O2 -mavx2

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128394

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Priority|P3                          |P2
   Last reconfirmed|                            |2026-11-03
             Status|UNCONFIRMED                 |ASSIGNED
   Target Milestone|---                         |16.3
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
            Summary|ICE in                      |[16/17 Regression] ICE in
                   |gsi_insert_seq_nodes_after, |gsi_insert_seq_nodes_after,
                   |at gimple-iterator.cc:274   |at gimple-iterator.cc:274
                   |from vect_do_peeling at -O2 |from vect_do_peeling at -O2
                   |-mavx2                      |-mavx2

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  The code should use gsi_insert_before.