* i386.c (classify_argument): Make it 64bit clean.

From-SVN: r74209

gcc/config/i386/i386.c

@@ -1934,7 +1934,7 @@ static int
 classify_argument (enum machine_mode mode, tree type,
 		   enum x86_64_reg_class classes[MAX_CLASSES], int bit_offset)
 {
-  int bytes =
+  HOST_WIDE_INT bytes =
     (mode == BLKmode) ? int_size_in_bytes (type) : (int) GET_MODE_SIZE (mode);
   int words = (bytes + (bit_offset % 64) / 8 + UNITS_PER_WORD - 1) / UNITS_PER_WORD;