   0  residual_call_ir_r $<* fn _operate>, I[%i0, %i1, $9223372036854775807, $'\x01'], R[%r0, $<* struct rpy_string>], <CallDescr(iriiir) EF=7> -> %r0
  13  -live- %r0
  13  getfield_gc_r_pure %r0, FieldDescr<tuple3.item0> -> %r0
  18  ref_return %r0
