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, 5 insertions, 5 deletions

diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c
index 22266bd355c..6732f2e2899 100644
--- a/gcc/tree-ssa-threadupdate.c
+++ b/gcc/tree-ssa-threadupdate.c
@@ -918,10 +918,10 @@ thread_through_loop_header (struct loop *loop, bool may_peel_loop_headers)
 
       /* The duplicate of the header is the new preheader of the loop.  Ensure
 	 that it is placed correctly in the loop hierarchy.  */
-      loop->copy = loop_outer (loop);
+      set_loop_copy (loop, loop_outer (loop));
 
       thread_block (header, false);
-      loop->copy = NULL;
+      set_loop_copy (loop, NULL);
       new_preheader = e->dest;
 
       /* Create the new latch block.  This is always necessary, as the latch
@@ -1031,9 +1031,7 @@ thread_through_all_blocks (bool may_peel_loop_headers)
 
   mark_threaded_blocks (threaded_blocks);
 
-  if (current_loops)
-    FOR_EACH_LOOP (li, loop, LI_FROM_INNERMOST)
-      loop->copy = NULL;
+  initialize_original_copy_tables ();
 
   /* First perform the threading requests that do not affect
      loop structure.  */
@@ -1067,6 +1065,8 @@ thread_through_all_blocks (bool may_peel_loop_headers)
     fprintf (dump_file, "\nJumps threaded: %lu\n",
 	     thread_stats.num_threaded_edges);
 
+  free_original_copy_tables ();
+
   BITMAP_FREE (threaded_blocks);
   threaded_blocks = NULL;
   VEC_free (edge, heap, threaded_edges);