On Tue, Mar 8, 2011 at 9:54 AM, Xinliang David Li <davi...@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 <davi...@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. >
