PR middle-end/32018

	* tree-ssa-threadupdate.c (thread_through_loop_header): Use
	set_loop_copy.
	(thread_through_all_blocks): Call initialize_original_copy_tables
	and free_original_copy_tables.
	* cfgloopmanip.c (duplicate_loop, duplicate_loop_to_header_edge):
	Use set_loop_copy.
	* tree-cfg.c (tree_duplicate_sese_region): Ditto.
	* cfghooks.c (duplicate_block): Use get_loop_copy.
	* cfg.c: Include cfgloop.h.
	(loop_copy): New hash table.
	(initialize_original_copy_tables): Initialize loop_copy table.
	(free_original_copy_tables): Free loop_copy table.
	(copy_original_table_clear, copy_original_table_set,
	set_loop_copy, get_loop_copy): New functions.
	(set_bb_original, set_bb_copy): Use copy_original_table_set.
	* cfgloop.h (struct loop): Remove copy field.
	* Makefile.in (cfg.o): Add CFGLOOP_H dependency.
	* basic-block.h (set_loop_copy, get_loop_copy): Declare.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125024 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 2 insertions, 3 deletions

diff --git a/gcc/cfghooks.c b/gcc/cfghooks.c
index 7f544c3ee3c..51405bb923a 100644
--- a/gcc/cfghooks.c
+++ b/gcc/cfghooks.c
@@ -928,9 +928,8 @@ duplicate_block (basic_block bb, edge e, basic_block after)
   if (current_loops != NULL)
     {
       struct loop *cloop = bb->loop_father;
-      if (cloop->copy)
-	cloop = cloop->copy;
-      add_bb_to_loop (new_bb, cloop);
+      struct loop *copy = get_loop_copy (cloop);
+      add_bb_to_loop (new_bb, copy ? copy : cloop);
     }
 
   return new_bb;