combine.c (simplify_set): Don't call to force_to_mode if size of integer type is larger than...

        * combine.c (simplify_set): Don't call to force_to_mode if size
        of integer type is larger than HOST_BITS_PER_WIDE_INT.

From-SVN: r57549

gcc/ChangeLog

+2002-09-26  Igor Shevlyakov <igor@microunity.com>
+
+	* combine.c (simplify_set): Don't call to force_to_mode if size
+	of integer type is larger than HOST_BITS_PER_WIDE_INT.
+
 2002-09-26  Janis Johnson  <janis187@us.ibm.com>
 
 	* Makefile.in (qmtest-g++): Fix file path.

gcc/combine.c

@@ -5011,7 +5011,8 @@ simplify_set (x)
      simplify the expression for the object knowing that we only need the
      low-order bits.  */
 
-  if (GET_MODE_CLASS (mode) == MODE_INT)
+  if (GET_MODE_CLASS (mode) == MODE_INT
+      && GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT)
     {
       src = force_to_mode (src, mode, ~(HOST_WIDE_INT) 0, NULL_RTX, 0);
       SUBST (SET_SRC (x), src);