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Re: Question on updating ssa for virtual operands (PRtree-optimization/22543)
> The other thing we could try to do is put virtual variables in loop-closed-
> form, at least just before the vectorizer, and at least just for some
> loops. Does this sound reasonabale? (By the way, why don't we keep virtual
> variables in loop-closed-form?)
We used to, nobody could come up with a good reason to keep doing it, so
we stopped. This was a couple months ago, i still have the emails
somewhere.
>
> 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.
>
> thanks,
> dorit
>