hashtab.h (hash_pointer): Declare.

	* hashtab.h (hash_pointer): Declare.
	(eq_pointer): Likewise.

	* hashtab.c (hash_pointer): New function.
	(eq_pointer): Likewise.
	(htab_hash_pointer): New variable.
	(htab_eq_pointer): Likewise.

From-SVN: r33372

include/ChangeLog

+2000-04-24  Mark Mitchell  <mark@codesourcery.com>
+
+	* hashtab.h (hash_pointer): Declare.
+	(eq_pointer): Likewise.
+
 2000-04-23  Mark Mitchell  <mark@codesourcery.com>
 
 	* sort.h: New file.

include/hashtab.h

@@ -129,6 +129,12 @@ extern size_t	htab_size	PARAMS ((htab_t));
 extern size_t	htab_elements	PARAMS ((htab_t));
 extern double	htab_collisions	PARAMS ((htab_t));
 
+/* A hash function for pointers.  */
+extern htab_hash htab_hash_pointer;
+
+/* An equality function for pointers.  */
+extern htab_eq htab_eq_pointer;
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

libiberty/ChangeLog

+2000-04-24  Mark Mitchell  <mark@codesourcery.com>
+
+	* hashtab.c (hash_pointer): New function.
+	(eq_pointer): Likewise.
+	(htab_hash_pointer): New variable.
+	(htab_eq_pointer): Likewise.
+
 2000-04-23  Mark Mitchell  <mark@codesourcery.com>
 
 	* sort.c (sort_pointers): Fix endianness bugs.

libiberty/hashtab.c

@@ -56,6 +56,14 @@ Boston, MA 02111-1307, USA.  */
 #define DELETED_ENTRY  ((void *) 1)
 
 static unsigned long higher_prime_number PARAMS ((unsigned long));
+static hashval_t hash_pointer PARAMS ((const void *));
+static int eq_pointer PARAMS ((const void *, const void *));
+
+/* At some point, we could make these be NULL, and modify the
+   hash-table routines to handle NULL specially; that would avoid
+   function-call overhead for the common case of hashing pointers.  */
+htab_hash htab_hash_pointer = hash_pointer;
+htab_eq htab_eq_pointer = eq_pointer;
 
 /* The following function returns the nearest prime number which is
    greater than a given source number, N. */
@@ -88,6 +96,25 @@ higher_prime_number (n)
   return n;
 }
 
+/* Returns a hash code for P.  */
+
+hashval_t
+hash_pointer (p)
+     const void *p;
+{
+  return (hashval_t) p;
+}
+
+/* Returns non-zero if P1 and P2 are equal.  */
+
+int
+eq_pointer (p1, p2)
+     const void *p1;
+     const void *p2;
+{
+  return p1 == p2;
+}
+
 /* This function creates table with length slightly longer than given
    source length.  Created hash table is initiated as empty (all the
    hash table entries are EMPTY_ENTRY).  The function returns the