PR middle-end/32018

[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-threadupdate.c

diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c
index 22266bd..6732f2e 100644 (file)
--- 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);