gcc/
	PR rtl-optimization/20017.
	* passes.c (rest_of_handle_combine, rest_of_handle_cse,
	rest_of_handle_cse2, rest_of_handle_gcse): Call
	delete_dead_jumptables immediately before calling cleanup_cfg.

testsuite/
	PR rtl-optimization/20017.
	* gcc.dg/pr20017.c: New.

From-SVN: r95431