gcc/

	* cse.c (cse_main): Free dominance info.
	(rest_of_handle_cse): Don't free dominance info.
	(rest_of_handle_cse2): Likewise.
	(rest_of_handle_cse_after_global_opts): Likewise.

gcc/testsuite/

	* gcc.dg/pr71148.c: New test.

From-SVN: r236460