   0  getfield_gc_r_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_buffer> -> %r1
   5  getfield_gc_i_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_offset> -> %i1
  10  int_add %i1, %i0 -> %i0
  14  -live- %i0, %r1
  17  guard_class %r1 -> %i1
  20  getfield_raw_i %i1, FieldDescr<rpython.rlib.buffer.Buffer_vtable.cls_getitem> -> %i1
  25  -live- %i0, %i1, %r1
  28  int_guard_value %i1
  30  residual_call_ir_i %i1, <IndirectCallTargets>, I[%i0], R[%r1], <CallDescr(ri) EF=7> -> %i0
  39  -live- %i0
  42  int_return %i0
