diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8c90bfb30bd..f9e774b650b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -7,6 +7,12 @@
 	* recog.h: Remove the prototype for
 	validate_replace_rtx_subexp.
 
+	* integrate.h: Remove the prototype for
+	copy_decl_for_inlining.
+	* rtl.h: Remove the prototype for mark_constant_function.
+	* tree-vectorizer.h: Remove the prototype for
+	vect_strip_conversion.
+
 2006-01-28  David Edelsohn  <edelsohn@gnu.org>
 
 	* config/rs6000/aix43.h (SUBTARGET_OVERRIDE_OPTIONS): -msoft-float
diff --git a/gcc/integrate.h b/gcc/integrate.h
index 3268238d8a9..7987627e1dc 100644
--- a/gcc/integrate.h
+++ b/gcc/integrate.h
@@ -30,10 +30,6 @@ extern rtx get_hard_reg_initial_reg (struct function *, rtx);
 extern void emit_initial_value_sets (void);
 extern void allocate_initial_values (rtx *);
 
-/* Copy a declaration when one function is substituted inline into
-   another.  */
-extern tree copy_decl_for_inlining (tree, tree, tree);
-
 /* Check whether there's any attribute in a function declaration that
    makes the function uninlinable.  Returns false if it finds any,
    true otherwise.  */
diff --git a/gcc/rtl.h b/gcc/rtl.h
index 250f383307c..1690a2af96b 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -2145,7 +2145,6 @@ extern int canon_true_dependence (rtx, enum machine_mode, rtx, rtx,
 extern int read_dependence (rtx, rtx);
 extern int anti_dependence (rtx, rtx);
 extern int output_dependence (rtx, rtx);
-extern void mark_constant_function (void);
 extern void init_alias_once (void);
 extern void init_alias_analysis (void);
 extern void end_alias_analysis (void);
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h
index c5b13781436..ef455d97a7b 100644
--- a/gcc/tree-vectorizer.h
+++ b/gcc/tree-vectorizer.h
@@ -319,7 +319,6 @@ extern void slpeel_verify_cfg_after_peeling (struct loop *, struct loop *);
   General Vectorization Utilities
  *************************************************************************/
 /** In tree-vectorizer.c **/
-extern tree vect_strip_conversion (tree);
 extern tree get_vectype_for_scalar_type (tree);
 extern bool vect_is_simple_use (tree, loop_vec_info, tree *, tree *,
 				enum vect_def_type *);