[Bug tree-optimization/127124] New: long wide multiply not always detected

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127124

            Bug ID: 127124
           Summary: long wide multiply not always detected
           Product: gcc
           Version: 17.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Created attachment 65442
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65442&action=edit
testcase

I can't figure out why though or the conditions.  It seems to get confused
which plus should be looked at.