[Bug rtl-optimization/79405] [8 Regression] Compile-time hog w/ -O2 (-Os, -O3) on 32-bit BE powerpc targets

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79405

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|7.0                         |8.0
            Summary|[7 Regression] Compile-time |[8 Regression] Compile-time
                   |hog w/ -O2 (-Os, -O3) on    |hog w/ -O2 (-Os, -O3) on
                   |32-bit BE powerpc targets   |32-bit BE powerpc targets

--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
Targeting gcc-8 to attempt Richi's suggestion to change iteration ordre to look
like:

  for (BBs in RPO order)
    for (insn in BB)
repeat:
      for (use in insn)
         if (propagate_into (use))
           goto repeat;