* cgraph.c (cgraph_clone_node): Add redirect_callers parameter.
	(cgraph_create_virtual_clone): Just pass redirect_callers
	around.
	* cgraph.h (cgraph_clone_node): Update prototype.
	* ipa-pure-const.c (self_recursive_p): New function.
	(propagate): Use it.
	* ipa-inline.c (cgraph_clone_inlined_nodes,
	* cgraph_decide_recursive_inlining): Update.
	* gcc.dg/tree-ssa/ipa-cp-1.c: New testcase.

From-SVN: r152388