re PR other/28251 (dumped addresses makes diffing dumps unusable)

re PR other/28251 (dumped addresses makes diffing dumps unusable)

gcc:
	PR other/28251
	* tree.h (dump_addr): Declare.
	* print-tree.c (dump_addr): New function.
	(print_node_brief, print_node): Use it.
	* print-rtl.c (print_rtx): Likewise.
	* common.opt (-fdump-noaddr): New option.
	* doc/invoke.texi (-fdump-noaddr): Document.
	* loop-unroll.c (si_info_hash): Make hash independent of addresses.
	(ve_info_hash): Likewise.
gcc/testsuite:
	PR other/28251
	gcc.c-torture/unsorted/dump-noaddr.c: New test.
	gcc.c-torture/unsorted/dump-noaddr.x: New driver.

From-SVN: r115519