Fix EH handling issue in last change:

Fix EH handling issue in last change:

        * config/epiphany/epiphany.c (epiphany_init): Check size of
        NUM_MODES_FOR_MODE_SWITCHING.
        (epiphany_expand_prologue):
        Remove CONFIG_REGNUM initial value handling code.
        (epiphany_optimize_mode_switching): Handle EPIPHANY_MSW_ENTITY_CONFIG.
        (epiphany_mode_needed, epiphany_mode_entry_exit): Likewise.
        (emit_set_fp_mode, epiphany_mode_after): Likewise.
        (epiphany_mode_needed) <Handle EPIPHANY_MSW_ENTITY_AND>:
        Don't return 1 for FP_MODE_NONE.
        * config/epiphany/epiphany.h (NUM_MODES_FOR_MODE_SWITCHING):
        Add value for EPIPHANY_MSW_ENTITY_CONFIG.
        (EPIPHANY_MSW_ENTITY_CONFIG, EPIPHANY_MSW_ENTITY_NUM): Define.
        * config/epiphany/epiphany.md (save_config): New pattern.

From-SVN: r198811