[Bug tree-optimization/63748] [4.9 Regression] wrong may be used uninitialized warning (abnormal edges)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63748

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
      Known to work|                            |5.0
            Summary|[4.9/5 Regression] wrong    |[4.9 Regression] wrong may
                   |may be used uninitialized   |be used uninitialized
                   |warning (abnormal edges)    |warning (abnormal edges)

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the fix is appropriate to backport if its prerequesite (making
out-of-SSA coalescing ignore default defs) are backported.

Fixed on trunk.