   0  getfield_gc_r %r0, FieldDescr<pypy.module.micronumpy.base.W_NDimArray.inst_implementation> -> %r0
   5  residual_call_r_r $<* fn BaseConcreteArray.nonzero>, R[%r0, $<* struct pypy.module.micronumpy.descriptor.W_Dtype>], <CallDescr(rr) EF=7> -> %r0
  13  -live- %r0
  16  ref_return %r0
