PR target/84828
	* reg-stack.c (change_stack): Change update_end var from int to
	rtx_insn *, if non-NULL don't update just BB_END (current_block), but
	also call set_block_for_insn on the newly added insns and rescan.

	* g++.dg/ext/pr84828.C: New test.

From-SVN: r258476