[Bug target/50906] e500 exception unwinding under "-Os" causes SIGSEGV

[amodra at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50906

Alan Modra <amodra at gmail dot com> changed:

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--- Comment #12 from Alan Modra <amodra at gmail dot com> 2011-11-04 10:00:43 UTC ---
Created attachment 25711
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25711
mainline fix

Revised patch.  I'd forgotten that you can't compare hard reg rtx's, ever since

2002-06-16  Jeff Law <law@redhat.com>

    * emit-rtl.c (gen_rtx_REG): Temporarily turn off automatic
    sharing of hard registers.

Some "temporarily" that turned out to be. :)