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Re: simplify_subreg aborts bad?
> You can accomplish that by having one matching pattern with VOIDmode
> and other mechanizm to generate that insn in expanders, that makes it to have
> mode.
Thought of that too. The optimizers aren't flexible enough in a few
cases to deal with non-CCmode conditional jumps. I don't recall the
specifics as it was many months ago when I last worked on those
patterns, but it had something to do with doloop optimizations.