PR ipa/69241
	PR c++/69649
	* gimplify.c (gimplify_modify_expr): Set lhs even for noreturn
	calls if the return type is TREE_ADDRESSABLE.
	* cgraphunit.c (cgraph_node::expand_thunk): Likewise.
	* ipa-split.c (split_function): Fix doubled "we" in comment.
	Use void return type for the split part even if
	!split_point->split_part_set_retval.

	* g++.dg/ipa/pr69241-1.C: New test.
	* g++.dg/ipa/pr69241-2.C: New test.
	* g++.dg/ipa/pr69241-3.C: New test.
	* g++.dg/ipa/pr69649.C: New test.

Co-Authored-By: Patrick Palka <ppalka@gcc.gnu.org>

From-SVN: r233271