tree-ssa-loop-niter.c (find_loop_niter): Remove just_once_each_iteration_p.

tree-ssa-loop-niter.c (find_loop_niter): Remove just_once_each_iteration_p.

	* tree-ssa-loop-niter.c (find_loop_niter): Remove just_once_each_iteration_p.
	(maybe_lower_iteration_bound): Initialize not_executed_last_iteration to  NULL
	* tree-ssa-loop-ivcanon.c (canonicalize_loop_induction_variables): Skip
	just_once_each_iteration_p; record estimated bound when loop has only one
	likely exit; test just_once_each_iteration_p before IV canon itself.

From-SVN: r193159