[Bug ipa/109341] [12/13 Regression] ICE in merge, at ipa-modref-tree.cc:176 since r12-3142-g5c85f29537662f

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109341

Jan Hubicka  changed:

   What|Removed |Added

   Assignee|unassigned at gcc dot gnu.org  |hubicka at gcc dot 
gnu.org
 Status|NEW |ASSIGNED

--- Comment #4 from Jan Hubicka  ---
mine.

[Bug ipa/109341] [12/13 Regression] ICE in merge, at ipa-modref-tree.cc:176 since r12-3142-g5c85f29537662f

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109341

Jakub Jelinek  changed:

   What|Removed |Added

 CC||jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek  ---
The warning is because we unswitch the loop, so we have a separate loop for h
!= 0 and separate loop for h == 0.  And the latter obviously invokes undefined
behavior (though I get it for iteration 3 rather than 7).

[Bug ipa/109341] [12/13 Regression] ICE in merge, at ipa-modref-tree.cc:176 since r12-3142-g5c85f29537662f

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109341

Martin Liška  changed:

   What|Removed |Added

   Keywords|needs-bisection |
Summary|[12/13 Regression] ICE in   |[12/13 Regression] ICE in
   |merge, at   |merge, at
   |ipa-modref-tree.cc:176  |ipa-modref-tree.cc:176
   ||since
   ||r12-3142-g5c85f29537662f

--- Comment #2 from Martin Liška  ---
Started with r12-3142-g5c85f29537662f.