PR tree-optimization/47234

	PR tree-optimization/47234
	* tree-pass.h (TODO_rebuild_cgraph_edges): New TODO.
	(pass_feedback_split_functions): Declare.
	* passes.c (init_optimization_passes): Add ipa-split as subpass of
	tree-profile.
	* ipa-split.c (gate_split_functions): Update comments; disable
	split-functions for profile_arc_flag and branch_probabilities.
	(gate_feedback_split_functions): New function.
	(execute_feedback_split_functions): New function.
	(pass_feedback_split_functions): New global var.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168632 138bc75d-0d04-0410-961f-82ee72b054a4