tree-ssa-propagate.c (add_ssa_edge): Dump what edge list we add which use to.

tree-ssa-propagate.c (add_ssa_edge): Dump what edge list we add which use to.

2015-07-07  Richard Biener  <rguenther@suse.de>

	* tree-ssa-propagate.c (add_ssa_edge): Dump what edge list we
	add which use to.
	(add_control_edge): Remove excessive vertical space in dumping.
	(process_ssa_edge_worklist): Simulate at most one statement and
	return whether we did.  Do not simulate PHIs if they are in a
	BB not yet simulated.
	(ssa_propagate): Adjust to always drain the BB worklist whenever
	a BB is available there, likewise the VARYING edges list before
	the interesting edge list.

From-SVN: r225504