Warning fixes:

Warning fixes:
        * Makefile.in (xcoffout.o): Depend on toplev.h, output.h and dbxout.h.
        * config/fp-bit.c (_fpmul_parts): Move variables `x', `ylow',
        `yhigh' and `bit' into the scope in which they are used.
        (_fpdiv_parts): Remove unused variables `low', `high', `r0', `r1',
        `y0', `y1', `q', `remainder', `carry', `d0' and `d1'.
        * rs6000.c: Move include of output.h below tree.h.  Include toplev.h.
        (any_operand): Mark unused parameters `op' and `mode' with
        ATTRIBUTE_UNUSED.
        (count_register_operand): Likewise for parameter `mode'.
        (fpmem_operand): Likewise.
        (short_cint_operand): Likewise.
        (u_short_cint_operand): Likewise.
        (non_short_cint_operand): Likewise.
        (got_operand): Likewise.
        (got_no_const_operand): Likewise.
        (non_add_cint_operand): Likewise.
        (non_logical_cint_operand): Likewise.
        (mask_operand): Likewise.
        (current_file_function_operand): Likewise.
        (small_data_operand): Likewise for parameters `op' and `mode' but
        only when !TARGET_ELF.
        (init_cumulative_args): Mark parameters `libname' with
        ATTRIBUTE_UNUSED.
        (function_arg_pass_by_reference): Likewise for parameters `cum',
        `mode' and `named'.
        (expand_builtin_saveregs): Likewise for parameter `args'.
        (load_multiple_operation): Likewise for parameter `mode'.
        (store_multiple_operation): Likewise.
        (branch_comparison_operator): Likewise.
        (secondary_reload_class): Likewise.
        (print_operand): Add parentheses around & operation.
        (output_prolog): Mark parameter `size' with ATTRIBUTE_UNUSED.
        (output_epilog): Likewise.  Cast argument to fprintf to int.
        (rs6000_adjust_cost): Mark parameter `dep_insn' with ATTRIBUTE_UNUSED.
        (rs6000_valid_decl_attribute_p): Likewise for parameters `decl',
        `attributes', `identifier' and `args'.
        (rs6000_valid_type_attribute_p): Likewise for parameter `attributes'.
        (rs6000_comp_type_attributes): Likewise for parameters `type1' and
        `type2'.
        (rs6000_set_default_type_attributes): Likewise for parameter `type'.
        * rs6000.h (RTX_COSTS): Add parentheses around & operation.
        (toc_section, private_data_section, trap_comparison_operator): Add
        prototypes.
        * dbxout.h (dbxout_parms, dbxout_reg_parms, dbxout_syms): Add
        prototypes.
        * xcoffout.c: Include toplev.h, outout.h and dbxout.h.
        * xcoffout.h (stab_to_sclass, xcoffout_begin_function,
        xcoffout_begin_block, xcoffout_end_epilogue,
        xcoffout_end_function, xcoffout_end_block,
        xcoff_output_standard_types, xcoffout_declare_function,
        xcoffout_source_line): Add prototypes.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@20717 138bc75d-0d04-0410-961f-82ee72b054a4