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Re: fix for pr47837
On Tue, Mar 8, 2011 at 9:54 AM, Xinliang David Li <davidxl@google.com> wrote:
> Please review the attached patch, it does some simplification of the
> complicated logical or expressions (x1 or x2 or x3 ...) constructed
> from control flow analysis into simpler form.
>
> Bootstraps and works on s390x for both testcases.
This is done by Andreas Krebble.
David
>
> Bootstraps on x86-64. Regression testing is on going (it takes forever
> (whole night already) to finish possibly because the lto test in
> c-torture ..).
>
> Ok for trunk?
>
> David
>
> 2011-03-08 ?Xinliang David Li ?<davidxl@google.com>
>
> ? ? ? ?PR c/47837
> ? ? ? ?* tree-ssa-uninit.c (pred_chain_length_cmp): New function.
> ? ? ? ?(normalize_preds): New function.
> ? ? ? ?(is_use_properly_guarded): Normalize def predicates.
>