2014-10-07  Teresa Johnson  <tejohnson@google.com>

	PR bootstrap/63432.
	* tree-ssa-threadupdate.c (estimated_freqs_path): New function.
	(ssa_fix_duplicate_block_edges): Invoke it.
	(mark_threaded_blocks): Make two passes to avoid ordering dependences.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216024 138bc75d-0d04-0410-961f-82ee72b054a4