Index: fold-const.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/fold-const.c,v
retrieving revision 1.623
diff -u -p -r1.623 fold-const.c
--- fold-const.c	24 Aug 2005 07:53:42 -0000	1.623
+++ fold-const.c	29 Aug 2005 04:26:08 -0000
@@ -6633,6 +6633,12 @@ fold_unary (enum tree_code code, tree ty
     case FIX_ROUND_EXPR:
       if (TREE_TYPE (op0) == type)
 	return op0;
+      
+      /* If we have (type) (a CMP b) and type is an integal type, return
+         new expression involving the new type.  */
+      if (COMPARISON_CLASS_P (op0) && INTEGRAL_TYPE_P (type))
+	return fold_build2 (TREE_CODE (op0), type, TREE_OPERAND (op0, 0),
+			    TREE_OPERAND (op0, 1));
 
       /* Handle cases of two conversions in a row.  */
       if (TREE_CODE (op0) == NOP_EXPR