tree-ssa-loop-niter.c (number_of_iterations_exit): New parameter EVERY_ITERATION…

tree-ssa-loop-niter.c (number_of_iterations_exit): New parameter EVERY_ITERATION with implicit value of true.


	* tree-ssa-loop-niter.c (number_of_iterations_exit): New parameter
	EVERY_ITERATION with implicit value of true.
	(record_estimate): Check dominance relationship of the basic block
	we are estimating on instead of relying on UPPER to be false.
	(struct ilb_data): Drop RELIABLE.
	(idx_infer_loop_bounds): Update.
	(infer_loop_bounds_from_ref): Drop parameter RELIABLE.
	(infer_loop_bounds_from_array): Drop parameter RELIABLE.
	(infer_loop_bounds_from_undefined): Update comments and handling
	of RELIABLE.
	(estimate_numbers_of_iterations_loop): Record all bounds.

From-SVN: r192990

gcc/tree-flow.h

@@ -627,7 +627,8 @@ bool parallelize_loops (void);
 
 bool loop_only_exit_p (const struct loop *, const_edge);
 bool number_of_iterations_exit (struct loop *, edge,
-				struct tree_niter_desc *niter, bool);
+				struct tree_niter_desc *niter, bool,
+				bool every_iteration = true);
 tree find_loop_niter (struct loop *, edge *);
 tree loop_niter_by_eval (struct loop *, edge);
 tree find_loop_niter_by_eval (struct loop *, edge *);