re PR target/68770 (Conditional jump or move depends on uninitialised value(s) default_secondary_reload() targhooks.c:940)

	PR target/68770
	* ira-costs.c (copy_cost): Initialise the t_icode field of the
	secondary_reload_info structure.

tests:	* g++.dg/pr68770.C: New test.

From-SVN: r232072