[Bug tree-optimization/68861] [6 regression] FAIL: libgomp.fortran/vla8.f90 -O3 -g execution test

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68861

--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
What a PITA to debug.  I'm making some progress here in that I can see a hunk
of memory that doesn't have the expected value.  Unfortunately mapping that
back to something done in optimizers is proving difficult.  It doesn't help
that the test is amazingly sensitive to reduction techniques -- to the point
where I'm wondering if we've got a missing barrier/synchronization problem.

Anyway I'm still plugging away.