2015-01-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    PR tree-optimization/64436
    * tree-ssa-math-opts.c (find_bswap_or_nop_1): Move code performing the
    merge of two symbolic numbers for a bitwise OR to ...
    (perform_symbolic_merge): This. Also fix computation of the range and
    end of the symbolic number corresponding to the result of a bitwise OR.

From-SVN: r219525