Make the SelectionDAG graph printer use SDNode::PersistentId labels.

r248010 changed the -debug output to use short ids, but did not
similarly modify the graph printer. Change to be consistent, for ease of
cross-reference.

llvm-svn: 251465
GitOrigin-RevId: 14eedd189b4a91a72e96895adeb647860784395a
5 files changed