[Bug debug/66688] [6 Regression] compare debug failure building Linux kernel on ppc64le

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66688

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |ASSIGNED
         Resolution|FIXED                       |---
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 37027
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37027&action=edit
gcc6-pr66688.patch

I think this just went latent with those changes.  The problem I see is that
cleanup_control_flow_bb can be called before fixup_noreturn_call is performed,
and in that case can either find a noreturn call at the end of bb if -g0 or
can't if the noreturn call is followed by some debug stmts.  This hunk fixes
the case so that it is handled the same.