http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47986
--- Comment #1 from Alan Modra <amodra at gmail dot com> 2011-03-04 11:24:02 UTC --- I can easily fix rs6000_delegitimize_address to handle this debug expression, but I suspect that would be papering over the real problem, the duplicate debug_insns.
