r122316 - in /trunk/gcc: ChangeLog cfgloop.c cf...

[rakdver@gcc.gnu.org]

Author: rakdver
Date: Sun Feb 25 19:49:22 2007
New Revision: 122316

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122316
Log:
	* tree-ssa-loop-niter.c (compute_estimated_nb_iterations): Fix
	off-by-one error.
	(array_at_struct_end_p): New function.
	(idx_infer_loop_bounds): Use it.
	(estimate_numbers_of_iterations_loop): Export.
	* predict.c (predict_loops): Use estimated_loop_iterations_int.
	Do not use PRED_LOOP_EXIT on exits predicted by # of iterations.
	(tree_estimate_probability): Call record_loop_exits.
	* tree-data-ref.c (get_number_of_iters_for_loop): Replaced by ...
	(estimated_loop_iterations, estimated_loop_iterations_int,
	estimated_loop_iterations_tree): New functions.
	(analyze_siv_subscript_cst_affine,
	compute_overlap_steps_for_affine_1_2,
	analyze_subscript_affine_affine): Use estimated_loop_iterations_int.
	(analyze_miv_subscript): Use estimated_loop_iterations_tree.
	* predict.def (PRED_LOOP_ITERATIONS): Update comment.
	(PRED_LOOP_ITERATIONS_GUESSED): New.
	* cfgloop.c (record_loop_exits): Do nothing if there are no loops.
	* cfgloop.h (estimate_numbers_of_iterations_loop,
	estimated_loop_iterations_int): Declare.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgloop.c
    trunk/gcc/cfgloop.h
    trunk/gcc/predict.c
    trunk/gcc/predict.def
    trunk/gcc/tree-data-ref.c
    trunk/gcc/tree-ssa-loop-niter.c