https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108574

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
           Priority|P3                          |P1
             Status|NEW                         |ASSIGNED
            Version|unknown                     |13.0

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Likely caused by r13-5348-gc29d85359add80

We do

marking outgoing edge 12 -> 6 executable
Looking for changed values of backedge 12->6 destination PHIs
Predication says 0 and e_10 are equal on edge 11 -> 6
Setting value number of e_5 to 0

I will have a more detailed look.

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