2013-10-29  Andrew Pinski <apinski@cavium.com>

        * tree-ssa-ifcombine.c: Include rtl.h and tm_p.h.
        (ifcombine_ifandif): Handle cases where
        maybe_fold_and_comparisons fails, combining the branches
        anyways.
        (tree_ssa_ifcombine): Inverse the order of
        the basic block walk, increases the number of combinings.
        * gimple.h (gsi_start_nondebug_after_labels_bb): New function.

2013-10-29  Andrew Pinski <apinski@cavium.com>
            Zhenqiang Chen  <zhenqiang.chen@linaro.org>

        * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-1.c: New test case.
        * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-2.c: New test case.
        * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-3.c: New test case.
        * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-4.c: New test case.
        * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-5.c: New test case.
        * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-6.c: New test case.
        * gcc.dg/tree-ssa/phi-opt-9.c: Use a function call to prevent
        conditional move to be used.
        * gcc.dg/tree-ssa/ssa-dom-thread-3.c: Remove.


Co-Authored-By: Zhenqiang Chen <zhenqiang.chen@linaro.org>

From-SVN: r204194