The current vex toolchain doesn't seem to support icall and igoto ?

I 've this code which gives error at the corresponding "igoto" lines

.section .text

.proc

.entry caller, sp=$r0.1, rl=$l0.0, asize=0, arg($r0.3:s32)

_incr::

;;

c0 add $r0.3 = $r0.10 , 1

;;

c0 igoto $l0.0

;;

.endp

.section .text

.proc

.entry caller, sp=$r0.1, rl=$l0.0, asize=-4, arg()

_main::

c0 sub $r0.1 = $r0.1 , 4

;;

c0 stw.l 0[$r0.1] = $l0.0

;;

c0 mov $r0.3 = 2

;;

c0 mov $r0.10 = $r0.3

;;

.call incr, caller, arg($r0.3:s32), ret($r0.3:s32)

c0 call $l0.0 = _incr

;;

c0 mov $r0.3 = 0

;;

c0 ldw.l $l0.0 = 0[$r0.1]

;;

c0 add $r0.1 = $r0.1 , 4

;;

c0 igoto $l0.0

;;

.endp

.import incr

.type incr,@function