re PR middle-end/46885 (ICE: in gsi_insert_seq_nodes_after, at gimple-iterator.c:251 with -ftree-parallelize-loops -g)

	PR debug/46885
	* tree-ssa-loop-manip.c (canonicalize_loop_ivs): Use gsi_last_bb
	instead of gsi_last_nondebug_bb if bump_in_latch.

	* gcc.dg/autopar/pr46885.c: New test.

From-SVN: r167801