mips.c (gpr_mode): New variable.

mips.c (gpr_mode): New variable.

        * mips.c (gpr_mode): New variable.
        (override_options): Initialize gpr_mode.
        (compute_frame_size): Use "gpr_mode" instead of "word_mode" to
        determine size and offset of general purpose registers save slots.
        (save_restore_insns, mips_expand_prologue): Similarly.

From-SVN: r20403