* doloop.c: Removed.

	* loop-doloop.c: New file.
	* Makefile.in (doloop.o): Remove.
	(loop-doloop.o): New.
	* cfgloop.h (get_loop_level, doloop_optimize_loops): Declare.
	* cfgloopanal.c (get_loop_level): New function.
	* loop-iv.c (iv_number_of_iterations): Handle case when loop
	is leaved immediatelly.
	* loop.c (strength_reduce): Do not call doloop optimization.
	* loop.h (LOOP_BCT): Removed.
	* passes.c (rest_of_handle_loop_optimize): Do not use LOOP_BCT.
	(rest_of_handle_loop2): Call doloop_optimize_loops.
	(rest_of_compilation): Test for optimizations moved to
	rest_of_handle_loop2.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@79625 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 17 insertions, 0 deletions

diff --git a/gcc/cfgloopanal.c b/gcc/cfgloopanal.c
index 9b3ffa0c8ae..63d6f4121b0 100644
--- a/gcc/cfgloopanal.c
+++ b/gcc/cfgloopanal.c
@@ -457,3 +457,20 @@ expected_loop_iterations (const struct loop *loop)
       return (freq_latch + freq_in - 1) / freq_in;
     }
 }
+
+/* Returns the maximum level of nesting of subloops of LOOP.  */
+
+unsigned
+get_loop_level (const struct loop *loop)
+{
+  const struct loop *ploop;
+  unsigned mx = 0, l;
+
+  for (ploop = loop->inner; ploop; ploop = ploop->next)
+    {
+      l = get_loop_level (ploop);
+      if (l >= mx)
+	mx = l + 1;
+    }
+  return mx;
+}