2013-05-17   Easwaran Raman  <eraman@google.com>

        * tree-ssa-reassoc.c (find_insert_point): New function.
        (insert_stmt_after): Likewise.
        (get_def_stmt): Likewise.
        (ensure_ops_are_available): Likewise.
        (not_dominated_by): Likewise.
        (rewrite_expr_tree): Do not move statements beyond what is
        necessary. Remove call to swap_ops_for_binary_stmt...
        (reassociate_bb): ... and move it here.
        (build_and_add_sum): Assign UIDs for new statements.
        (linearize_expr): Likewise.
        (do_reassoc): Renumber gimple statement UIDs.

testsuite/ChangeLog:

2013-05-17   Easwaran Raman  <eraman@google.com>

        * gcc.dg/tree-ssa/reassoc-28.c: New testcase.

From-SVN: r199048