re PR tree-optimization/82472 (ICE in generate_code_for_partition, at tree-loop-distribution.c:1145)

	PR tree-optimization/82472
	* tree-loop-distribution.c (sort_partitions_by_post_order): Refine
	comment.
	(break_alias_scc_partitions): Update postorder number.

	gcc/testsuite
	* gcc.dg/tree-ssa/pr82472.c: New test.

From-SVN: r253641