[Bug middle-end/119306] New: [13/14/15 Regression] Compare debug on aarch64-linux-gnu with -O2

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119306

            Bug ID: 119306
           Summary: [13/14/15 Regression] Compare debug on
                    aarch64-linux-gnu with -O2
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Keywords: compare-debug-failure
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64-linux-gnu

Created attachment 60771
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60771&action=edit
testcase

This one depends on the exact whitespace as the attachment so it is hard to
reduce even further. I reduced this down from what I was looking into PR 118615
.

This fails with `-O2 -fcompare-debug` all the back to GCC 13.1.0 so I suspect
this might be the underlying cause of PR 113546 .