* basic-block.h (guess_outgoing_edge_probabilities): Declare.
	* cfgbuild.c (compute_outgoing_frequencies): When probability is missing,
	guess it.
	(find_many_sub_basic_blocks): Do update profile only when it is present.
	* predict.c (set_even_probabilities): Break out from ...
	(combine_predictions_for_insn): ... here; deal with !can_predict_insn_p insns.
	(combine_predictions_for_bb): Use set_even_probabilities.
	(bb_estimate_probability_locally): Break out from ....
	(estimate_probability): ... here.
	(guess_outgoing_edge_probabilities): New entry point.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87234 138bc75d-0d04-0410-961f-82ee72b054a4