tree.c (iterative_hash_expr): Hash decls based on UID.

2006-01-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree.c (iterative_hash_expr): Hash decls based on UID.

From-SVN: r109448

gcc/ChangeLog

+2006-01-06  Daniel Berlin  <dberlin@dberlin.org>
+
+	* tree.c (iterative_hash_expr): Hash decls based on UID.
+
 2006-01-06  Eric Christopher  <echristo@apple.com>
 
 	* doc/tm.texi (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): Document.

gcc/tree.c

@@ -4718,8 +4718,8 @@ iterative_hash_expr (tree t, hashval_t val)
 
       if (class == tcc_declaration)
 	{
-	  /* Otherwise, we can just compare decls by pointer.  */
-	  val = iterative_hash_pointer (t, val);
+	  /* DECL's have a unique ID */
+	  val = iterative_hash_host_wide_int (DECL_UID (t), val);
 	}
       else
 	{