[PR debug/41616] introduce debug bind stmts on SSA updates

[Alexandre Oliva]

Variables that were addressable in the initial SSA rewrite, but that
later become non-addressable, would not get debug stmts during the
update rewrite.  This patch fixes it.  Ok to install if it regstraps?

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-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist      Red Hat Brazil Compiler Engineer