diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 254e71864c3..f0b12ae1abf 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2003-04-05  Daniel Berlin  <dberlin@dberlin.org>
+
+	* Makefile.in (df.o):  Depend on alloc-pool.h, not obstack.h.
+	* df.c: Include alloc-pool.h, not obstack.h.
+	(df_ref_obstack): Remove.
+	(df_ref_pool, df_link_pool): Add pools.
+	(df_alloc): Init the new pools.
+	(df_free): And free them.
+	(df_link_create): Use the pools.
+	(df_ref_create): Ditto.
+
 2003-04-05  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* simplify-rtx.c: Fix formatting.
@@ -1351,7 +1362,7 @@ Mon Mar 24 20:03:03 CET 2003  Jan Hubicka  <jh@suse.cz>
 	operands in case MULT_EXPR of 2003-02-16 patch.
 
 2003-03-20  Daniel Berlin  <dberlin@dberlin.org>
-	Merge changes from new-regalloc-branch
+	Merge changes from new-regalloc-branch 
 
 	From Michael Matz  <matz@suse.de>
 	* df.c (df_ref_record_1): Move init of loc to safe point.
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index baac2a0d0bf..6e02f20c9e8 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1608,7 +1608,7 @@ ssa-ccp.o : ssa-ccp.c $(CONFIG_H) system.h coretypes.h $(TM_H) $(RTL_H) hard-reg
     $(BASIC_BLOCK_H) ssa.h insn-config.h $(RECOG_H) output.h \
     errors.h $(GGC_H) df.h function.h
 df.o : df.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) \
-   insn-config.h $(RECOG_H) function.h $(REGS_H) $(OBSTACK_H) hard-reg-set.h \
+   insn-config.h $(RECOG_H) function.h $(REGS_H) alloc-pool.h hard-reg-set.h \
    $(BASIC_BLOCK_H) df.h $(FIBHEAP_H)
 conflict.o : conflict.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(OBSTACK_H) \
    $(HASHTAB_H) $(RTL_H) hard-reg-set.h $(BASIC_BLOCK_H)
diff --git a/gcc/df.c b/gcc/df.c
index 74102902ad0..b23c2862b17 100644
--- a/gcc/df.c
+++ b/gcc/df.c
@@ -180,7 +180,7 @@ and again mark them read/write.
 #include "recog.h"
 #include "function.h"
 #include "regs.h"
-#include "obstack.h"
+#include "alloc-pool.h"
 #include "hard-reg-set.h"
 #include "basic-block.h"
 #include "sbitmap.h"
@@ -197,7 +197,8 @@ and again mark them read/write.
     }							\
   while (0)
 
-static struct obstack df_ref_obstack;
+static alloc_pool df_ref_pool;
+static alloc_pool df_link_pool;
 static struct df *ddf;
 
 static void df_reg_table_realloc PARAMS((struct df *, int));
@@ -502,7 +503,9 @@ df_alloc (df, n_regs)
   int n_insns;
   basic_block bb;
 
-  gcc_obstack_init (&df_ref_obstack);
+  df_link_pool = create_alloc_pool ("df_link pool", sizeof (struct df_link),
+				    100);
+  df_ref_pool  = create_alloc_pool ("df_ref pool", sizeof (struct ref), 100);
 
   /* Perhaps we should use LUIDs to save memory for the insn_refs
      table.  This is only a small saving; a few pointers.  */
@@ -587,7 +590,9 @@ df_free (df)
   BITMAP_XFREE (df->all_blocks);
   df->all_blocks = 0;
 
-  obstack_free (&df_ref_obstack, NULL);
+  free_alloc_pool (df_ref_pool);
+  free_alloc_pool (df_link_pool);
+
 }
 
 /* Local miscellaneous routines.  */
@@ -629,8 +634,7 @@ df_link_create (ref, next)
 {
   struct df_link *link;
 
-  link = (struct df_link *) obstack_alloc (&df_ref_obstack,
-					   sizeof (*link));
+  link = pool_alloc (df_link_pool);
   link->next = next;
   link->ref = ref;
   return link;
@@ -768,8 +772,7 @@ df_ref_create (df, reg, loc, insn, ref_type, ref_flags)
 {
   struct ref *this_ref;
 
-  this_ref = (struct ref *) obstack_alloc (&df_ref_obstack,
-					   sizeof (*this_ref));
+  this_ref = pool_alloc (df_ref_pool);
   DF_REF_REG (this_ref) = reg;
   DF_REF_LOC (this_ref) = loc;
   DF_REF_INSN (this_ref) = insn;