* tree-vrp.c (cfg_loops): Removed.

	(adjust_range_with_scev, vrp_visit_assignment, execute_vrp):
	Use current_loops instead of cfg_loops.  Pass flags to
	loop_optimizer_init.
	* cfgloopmanip.c (fix_loop_structure): Update only available
	information.
	* tree-ssa-loop-ch.c (copy_loop_headers): Pass flags to
	loop_optimizer_init.
	* modulo-sched.c (build_loops_structure): Removed.
	(sms_schedule): Use loop_optimizer_init.
	* loop-init.c (loop_optimizer_init): Use flags to determine
	which properties of loops to prepare.
	(rtl_loop_init): Pass flags to loop_optimizer_init.
	* tree-ssa-sink.c (execute_sink_code): Ditto.
	* tree-ssa-loop.c (tree_loop_optimizer_init): Ditto.
	* tree-ssa-pre.c (init_pre): Ditto.
	* cfgloop.h (LOOPS_NORMAL): New.
	(loop_optimizer_init): Declaration changed.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110620 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 2 deletions

diff --git a/gcc/cfgloopmanip.c b/gcc/cfgloopmanip.c
index ac2a75b0b29..bb7aca0faeb 100644
--- a/gcc/cfgloopmanip.c
+++ b/gcc/cfgloopmanip.c
@@ -1617,6 +1617,8 @@ fix_loop_structure (struct loops *loops, bitmap changed_bbs)
       bb->aux = NULL;
     }
 
-  mark_single_exit_loops (loops);
-  mark_irreducible_loops (loops);
+  if (loops->state & LOOPS_HAVE_MARKED_SINGLE_EXITS)
+    mark_single_exit_loops (loops);
+  if (loops->state & LOOPS_HAVE_MARKED_IRREDUCIBLE_REGIONS)
+    mark_irreducible_loops (loops);
 }