2013-10-02  Teresa Johnson  <tejohnson@google.com>

	* predict.c (probably_never_executed): New function.
	(probably_never_executed_bb_p): Invoke probably_never_executed.
	(probably_never_executed_edge_p): Ditto.
	* bb-reorder.c (find_rarely_executed_basic_blocks_and_crossing_edges):
	Treat profile insanities conservatively.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203152 138bc75d-0d04-0410-961f-82ee72b054a4