* cfgloopmanip.c (remove_path, loopify, duplicate_loop_to_header_edge):

	Change dom_bbs to vector.  Add argument to iterate_fix_dominators call.
	* loop-unroll.c (unroll_loop_runtime_iterations): Ditto.
	* tree-cfg.c (tree_duplicate_sese_region): Change doms to vector.
	Add argument to iterate_fix_dominators call.
	(remove_edge_and_dominated_blocks): Pass vector to bbs_to_fix_dom.
	* gcse.c (hoist_code): Change domby to vector.
	* cfghooks.c (make_forwarder_block): Change doms_to_fix to vector.
	Add argument to iterate_fix_dominators call.
	* loop-doloop.c (doloop_modify): Changed recount_dominator to
	recompute_dominator.
	* lambda-code.c (perfect_nestify): Ditto.
	* cfgloopanal.c: Include graphds.h.
	(struct edge, struct vertex, struct graph, dump_graph, new_graph,
	add_edge, dfs, for_each_edge, free_graph): Moved to graphds.c.
	(mark_irreducible_loops): Use graphds_scc.  Remove argument from
	add_edge call.
	* graphds.c: New file.
	* graphds.h: New file.
	* dominance.c: Include vecprim.h, pointer-set.h and graphds.h.
	(get_dominated_by, get_dominated_by_region): Change return type to
	vector.
	(verify_dominators): Recompute all dominators and compare the results.
	(recount_dominator): Renamed to ...
	(recompute_dominator): ... this.  Do not check that the block is
	dominated by entry.
	(iterate_fix_dominators): Reimplemented.
	(prune_bbs_to_update_dominators, root_of_dom_tree,
	determine_dominators_for_sons): New functions.
	* et-forest.c (et_root): New function.
	* et-forest.h (et_root): Declare.
	* Makefile.in (graphds.o): Add.
	(cfgloopanal.o): Add graphds.h dependency.
	(dominance.o): Add graphds.h, vecprim.h and pointer-set.h dependency.
	* basic-block.h (get_dominated_by, get_dominated_by_region,
	iterate_fix_dominators): Declaration changed.
	(recount_dominator): Renamed to ...
	(recompute_dominator): ... this.
	* tree-ssa-threadupdate.c (thread_block): Free dominance info.
	(thread_through_all_blocks): Do not free dominance info.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125297 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 3 deletions

diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c
index 815c84fb7b3..e8a05ed857b 100644
--- a/gcc/tree-ssa-threadupdate.c
+++ b/gcc/tree-ssa-threadupdate.c
@@ -577,6 +577,9 @@ thread_block (basic_block bb, bool noloop_only)
       lookup_redirection_data (e, NULL, NO_INSERT)->do_not_duplicate = true;
     }
 
+  /* We do not update dominance info.  */
+  free_dominance_info (CDI_DOMINATORS);
+
   /* Now create duplicates of BB.
 
      Note that for a block with a high outgoing degree we can waste
@@ -1057,9 +1060,6 @@ thread_through_all_blocks (bool may_peel_loop_headers)
       retval |= thread_through_loop_header (loop, may_peel_loop_headers);
     }
 
-  if (retval)
-    free_dominance_info (CDI_DOMINATORS);
-
   if (dump_file && (dump_flags & TDF_STATS))
     fprintf (dump_file, "\nJumps threaded: %lu\n",
 	     thread_stats.num_threaded_edges);