* profile.c: Include cfgloop.h.

	(branch_prob): Compute estimated number of iterations.
	* tree-ssa-loop-niter.c (estimate_numbers_of_iterations_loop): Do not
	recompute estimate number of iterations from profile.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237305 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 13 insertions, 0 deletions

diff --git a/gcc/profile.c b/gcc/profile.c
index 9925bb568c6..4519e7d8558 100644
--- a/gcc/profile.c
+++ b/gcc/profile.c
@@ -63,6 +63,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "gimple-iterator.h"
 #include "tree-cfg.h"
 #include "dumpfile.h"
+#include "cfgloop.h"
 
 #include "profile.h"
 
@@ -1329,9 +1330,21 @@ branch_prob (void)
   coverage_end_function (lineno_checksum, cfg_checksum);
   if (flag_branch_probabilities && profile_info)
     {
+      struct loop *loop;
       if (dump_file && (dump_flags & TDF_DETAILS))
 	report_predictor_hitrates ();
       profile_status_for_fn (cfun) = PROFILE_READ;
+
+      /* At this moment we have precise loop iteration count estimates.
+	 Record them to loop structure before the profile gets out of date. */
+      FOR_EACH_LOOP (loop, 0)
+	if (loop->header->count)
+	  {
+	    gcov_type nit = expected_loop_iterations_unbounded (loop);
+	    widest_int bound = gcov_type_to_wide_int (nit);
+	    loop->any_estimate = false;
+	    record_niter_bound (loop, bound, true, false);
+	  }
       compute_function_frequency ();
     }
 }