cprop.c: Use rtx_insn

cprop.c: Use rtx_insn

gcc/
2014-08-22  David Malcolm  <dmalcolm@redhat.com>

	* cprop.c (struct occr): Strengthen field "insn" from rtx to
	rtx_insn *.
	(reg_available_p): Likewise for param "insn".
	(insert_set_in_table): Likewise.
	(hash_scan_set): Likewise.
	(hash_scan_insn): Likewise.
	(make_set_regs_unavailable): Likewise.
	(compute_hash_table_work): Likewise for local "insn".
	(reg_not_set_p): Strengthen param "insn" from const_rtx to
	const rtx_insn *.
	(mark_oprs_set): Strengthen param "insn" from rtx to rtx_insn *.
	(try_replace_reg): Likewise.
	(find_avail_set): Likewise.
	(cprop_jump): Likewise for params "setcc", "jump".
	(constprop_register): Likewise for param "insn".
	(cprop_insn): Likewise.
	(do_local_cprop): Likewise.
	(local_cprop_pass): Likewise for local "insn".
	(bypass_block): Likewise for params "setcc" and "jump".
	(bypass_conditional_jumps): Likewise for locals "setcc" and
	"insn".
	(one_cprop_pass): Likewise for local "insn".

From-SVN: r214303