add to this list, modify special_rtx in gengenrtl.c as well. You
should also modify gen_rtx to use the special function. */
+extern rtx gen_rtx_CONST_DOUBLE PROTO((enum machine_mode, rtx,
+ HOST_WIDE_INT, HOST_WIDE_INT));
extern rtx gen_rtx_CONST_INT PROTO((enum machine_mode, HOST_WIDE_INT));
extern rtx gen_rtx_REG PROTO((enum machine_mode, int));
extern rtx gen_rtx_MEM PROTO((enum machine_mode, rtx));