   0  strlen %r1 -> %i1
   3  -live- %i0, %i1, %r0, %r1
   6  goto_if_not_int_is_zero %i1, L1
  10  void_return
  11  ---
  11  L1:
  11  getfield_gc_r_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_buffer> -> %r2
  16  getfield_gc_i_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_offset> -> %i1
  21  int_add %i1, %i0 -> %i0
  25  -live- %i0, %r1, %r2
  28  guard_class %r2 -> %i1
  31  getfield_raw_i %i1, FieldDescr<rpython.rlib.buffer.Buffer_vtable.cls_setslice> -> %i1
  36  -live- %i0, %i1, %r1, %r2
  39  int_guard_value %i1
  41  residual_call_ir_v %i1, <IndirectCallTargets>, I[%i0], R[%r2, %r1], <CallDescr(rir) EF=7>
  50  -live-
  53  void_return
