regmove.c: New implementation of regmove pass.

regmove.c: New implementation of regmove pass.

        * regmove.c: New implementation of regmove pass.
        * local-alloc.c (optimize_reg_copy_1, optimize_reg_copy_2): Remove
        decls, make them have external linkage.  Return a value from
        optimize_reg_copy_1.
        * reload.h (count_occurrences): Add decl.
        * reload1.c (count_occurrences): Delete decl, make it have external
        linkage.
        * rtl.h (optimize_reg_copy_1, optimize_reg_copy_2): Declare.

Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r17316