* pa-host.c (MAP_FAILED): Define if not defined.

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

diff --git a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c
index 4cc136b..93ceaeb 100644 (file)
--- a/gcc/tree-ssa-dse.c
+++ b/gcc/tree-ssa-dse.c
@@ -326,6 +326,14 @@ dse_optimize_stmt (struct dom_walk_data *walk_data,
             This allows us to cascade dead stores.  */
          redirect_immediate_uses (stmt, skipped_phi ? skipped_phi : use);
 
+         /* Be sure to remove any dataflow information attached to
+            this statement.  */
+         free_df_for_stmt (stmt);
+
+         /* And release any SSA_NAMEs set in this statement back to the
+            SSA_NAME manager.  */
+         release_defs (stmt);
+
          /* Finally remove the dead store.  */
          bsi_remove (&bsi);
        }
@@ -360,10 +368,14 @@ dse_finalize_block (struct dom_walk_data *walk_data,
   struct dse_global_data *dse_gd = walk_data->global_data;
   bitmap stores = dse_gd->stores;
   unsigned int i;
+  bitmap_iterator bi;
 
   /* Unwind the stores noted in this basic block.  */
   if (bd->stores)
-    EXECUTE_IF_SET_IN_BITMAP (bd->stores, 0, i, bitmap_clear_bit (stores, i););
+    EXECUTE_IF_SET_IN_BITMAP (bd->stores, 0, i, bi)
+      {
+       bitmap_clear_bit (stores, i);
+      }
 }
 
 static void