cfg.c (flow_obstack): Remove.

	* cfg.c (flow_obstack): Remove.
	(flow_firstobj): Likewise.
	(init_flow): Remove all uses of flow_obstack.

From-SVN: r91477

gcc/ChangeLog

@@ -15,6 +15,10 @@
 	* tree-cfg.c (tree_redirect_edge_and_branch): Call find_edge
 	only when needed.
 
+	* cfg.c (flow_obstack): Remove.
+	(flow_firstobj): Likewise.
+	(init_flow): Remove all uses of flow_obstack.
+
 2004-11-29  Alan Modra  <amodra@bigpond.net.au>
 
 	* varasm.c (default_elf_select_section_1): Only pass DECL_P decl

gcc/cfg.c

@@ -66,8 +66,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 /* The obstack on which the flow graph components are allocated.  */
 
 struct bitmap_obstack reg_obstack;
-struct obstack flow_obstack;
-static char *flow_firstobj;
 
 /* Number of basic blocks in the current function.  */
 
@@ -102,22 +100,8 @@ enum profile_status profile_status;
 void
 init_flow (void)
 {
-  static int initialized;
-
   n_edges = 0;
 
-  if (!initialized)
-    {
-      gcc_obstack_init (&flow_obstack);
-      flow_firstobj = obstack_alloc (&flow_obstack, 0);
-      initialized = 1;
-    }
-  else
-    {
-      obstack_free (&flow_obstack, flow_firstobj);
-      flow_firstobj = obstack_alloc (&flow_obstack, 0);
-    }
-
   ENTRY_BLOCK_PTR = ggc_alloc_cleared (sizeof (*ENTRY_BLOCK_PTR));
   ENTRY_BLOCK_PTR->index = ENTRY_BLOCK;
   EXIT_BLOCK_PTR = ggc_alloc_cleared (sizeof (*EXIT_BLOCK_PTR));