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Re: Question on updating ssa for virtual operands (PR tree-optimization/22543)





Daniel Berlin <dberlin@dberlin.org> wrote on 12/08/2005 17:56:11:
> > comments/ideas?
>
> I would start by figuring out why update_ssa + rewrite_into_loop_closed
> isn't putting SFT.3 into loop closed ssa form.
>
> Even if we do put virtual vars back into loop closed, that's still a
> bug.
>

I found the problem - apparently there's a call to delete_update_ssa()
between the point where I mark the vars for renaming and the point where
update_ssa() is called... I'm now just recording the vars I want to rename
in a bitmap and mark them for renaming later on, just before the call to
update_ssa(), and indeed update_ssa() does the job and the failure is
resolved.

thanks,

dorit

> >
> > thanks,
> > dorit
> >
>


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