tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Restructure forwarding through conversions and copies to avoid performing...

2013-10-15  Richard Biener  <rguenther@suse.de>

	* tree-ssa-forwprop.c (forward_propagate_addr_expr_1):
	Restructure forwarding through conversions and copies to
	avoid performing copy-propagation the wrong way.  Adjust
	recursion invocations.
	(forward_propagate_addr_expr): Add argument stating if we
	are recursing from a single-use.
	(ssa_forward_propagate_and_combine): Adjust.

From-SVN: r203591