re PR rtl-optimization/46440 (ICE: in rtl_verify_flow_info, at cfgrtl.c:2165 with -fstack-protector-all -fno-tree-dominator-opts -fno-tree-fre)

	PR rtl-optimization/46440
	* combine.c (update_cfg_for_uncondjump): When changing
	an indirect jump into unconditional jump, remove BARRIERs
	from bb's footer.

	* gcc.dg/pr46440.c: New test.

From-SVN: r166867