   0  strlen %r1 -> %i1
   3  -live- %i0, %i1, %r0, %r1
   3  goto_if_not_int_is_zero %i1, L1
   7  void_return
   8  ---
   8  L1:
   8  getfield_gc_r_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_buffer> -> %r2
  13  getfield_gc_i_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_offset> -> %i1
  18  int_add %i1, %i0 -> %i0
  22  -live- %i0, %r1, %r2
  22  guard_class %r2 -> %i1
  25  getfield_raw_i %i1, FieldDescr<rpython.rlib.buffer.Buffer_vtable.cls_setslice> -> %i1
  30  -live- %i0, %i1, %r1, %r2
  30  int_guard_value %i1
  32  residual_call_ir_v %i1, <IndirectCallTargets>, I[%i0], R[%r2, %r1], <CallDescr(rir) EF=7>
  41  -live-
  41  void_return
