tree-ssa-dom.c (tree_ssa_dominator_optimize): Call free_dominance_info only when...

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Call
	free_dominance_info only when needed.

From-SVN: r95791

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d65dd24b0b6f39cdbe51fcbc5d1ef7a7a13464ae..e5e19ccd4939db7519f8050571c3d82c01b84608 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -5,6 +5,9 @@
        (unchecked_make_edge, remove_edge, redirect_edge_succ,
        redirect_edge_pred): Use the new functions.
 
+       * tree-ssa-dom.c (tree_ssa_dominator_optimize): Call
+       free_dominance_info only when needed.
+
 2005-03-02  David Edelsohn  <edelsohn@gnu.org>
 
        PR target/20276

diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c
index 5216c3b6313623e01a0340dd5b9594af42c850e0..242de47b61089c7e72c28278777c5254109bd8f9 100644 (file)
--- a/gcc/tree-ssa-dom.c
+++ b/gcc/tree-ssa-dom.c
@@ -444,7 +444,8 @@ tree_ssa_dominator_optimize (void)
          bitmap_zero (need_eh_cleanup);
        }
 
-      free_dominance_info (CDI_DOMINATORS);
+      if (cfg_altered)
+       free_dominance_info (CDI_DOMINATORS);
       cfg_altered |= cleanup_tree_cfg ();
       calculate_dominance_info (CDI_DOMINATORS);