expmed.c: Use rtx_insn and rtx_code_label

expmed.c: Use rtx_insn and rtx_code_label

gcc/
	* expmed.c (store_bit_field_using_insv): Strengthen local "last"
	from rtx to rtx_insn *.
	(store_bit_field_1): Likewise.
	(extract_bit_field_1): Likewise.
	(expand_mult_const): Likewise for local "insns".
	(expmed_mult_highpart): Strengthen local "label" from rtx to
	rtx_code_label *.
	(expand_smod_pow2): Likewise.
	(expand_sdiv_pow2): Likewise.
	(expand_divmod): Strengthen locals "last", "insn" from rtx to
	rtx_insn *.  Strengthen locals "label", "label1", "label2",
	"label3", "label4", "label5", "lab" from rtx to rtx_code_label *.
	(emit_cstore): Strengthen local "last" from rtx to rtx_insn *.
	(emit_store_flag): Likewise.
	(emit_store_flag_force): Strengthen local "label" from rtx to
	rtx_code_label *.
	(do_cmp_and_jump): Likewise for param "label".

From-SVN: r214323