tree-ssa-dom.c (tree_ssa_dominator_optimize): Fix setting of CFG_ALTERED in the…

tree-ssa-dom.c (tree_ssa_dominator_optimize): Fix setting of CFG_ALTERED in the main DOM iteration loop.

        * tree-ssa-dom.c (tree_ssa_dominator_optimize): Fix setting of
        CFG_ALTERED in the main DOM iteration loop.

From-SVN: r95788

gcc/ChangeLog

+2005-03-02  Jeff Law  <law@redhat.com>
+
+	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Fix setting of
+	CFG_ALTERED in the main DOM iteration loop.
+
 2005-03-02  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/19916

gcc/tree-ssa-dom.c

@@ -434,7 +434,7 @@ tree_ssa_dominator_optimize (void)
       free_all_edge_infos ();
 
       /* Thread jumps, creating duplicate blocks as needed.  */
-      cfg_altered = thread_through_all_blocks ();
+      cfg_altered |= thread_through_all_blocks ();
 
       /* Removal of statements may make some EH edges dead.  Purge
 	 such edges from the CFG as needed.  */
@@ -445,7 +445,7 @@ tree_ssa_dominator_optimize (void)
 	}
 
       free_dominance_info (CDI_DOMINATORS);
-      cfg_altered = cleanup_tree_cfg ();
+      cfg_altered |= cleanup_tree_cfg ();
       calculate_dominance_info (CDI_DOMINATORS);
 
       rewrite_ssa_into_ssa ();