loop.texi: Document number_of_latch_executions and number_of_cond_exit_executions.

	* doc/loop.texi: Document number_of_latch_executions and
	number_of_cond_exit_executions.
	* tree-scalar-evolution.c (compute_overall_effect_of_inner_loop,
	chrec_is_positive, number_of_iterations_for_all_loops,
	scev_const_prop): Use number_of_latch_executions.
	(set_nb_iterations_in_loop): Do not increase the value of the
	number of iterations.
	(number_of_iterations_in_loop): Renamed to ...
	(number_of_latch_executions): ... this.
	(number_of_exit_cond_executions): New function.
	* tree-scalar-evolution.h (number_of_iterations_in_loop): Declaration
	removed.
	(number_of_latch_executions, number_of_exit_cond_executions): Declare.
	* tree-ssa-loop-ivcanon.c (canonicalize_loop_induction_variables): Use
	number_of_latch_executions.
	* tree-data-ref.c (get_number_of_iters_for_loop): Use
	number_of_exit_cond_executions.
	* tree-vect-analyze.c (vect_get_loop_niters): Ditto.
	* cfgloop.h (struct loop): Improve description of the nb_iterations
	field.

	* gcc.dg/tree-ssa/loop-17.c: Update outcome.

From-SVN: r119718

1 files changed, 2 insertions, 2 deletions

diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h
index d523acf..4a13a6a 100644
--- a/gcc/cfgloop.h
+++ b/gcc/cfgloop.h
@@ -119,10 +119,10 @@ struct loop
   /* Auxiliary info specific to a pass.  */
   void *aux;
 
-  /* The probable number of times the loop is executed at runtime.
+  /* The number of times the latch of the loop is executed.
      This is an INTEGER_CST or an expression containing symbolic
      names.  Don't access this field directly:
-     number_of_iterations_in_loop computes and caches the computed
+     number_of_latch_executions computes and caches the computed
      information in this field.  */
   tree nb_iterations;