   0  -live- %i0, %i1, %i2, %r0
   3  goto_if_not_int_is_zero %i2, L1
   7  ref_return $<* struct rpy_string>
   9  ---
   9  L1:
   9  getfield_gc_r_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_buffer> -> %r1
  14  getfield_gc_i_pure %r0, FieldDescr<rpython.rlib.buffer.SubBuffer.inst_offset> -> %i3
  19  int_add %i3, %i0 -> %i0
  23  -live- %i0, %i1, %i2, %r1
  26  guard_class %r1 -> %i3
  29  getfield_raw_i %i3, FieldDescr<rpython.rlib.buffer.Buffer_vtable.cls_getslice> -> %i3
  34  -live- %i0, %i1, %i2, %i3, %r1
  37  int_guard_value %i3
  39  residual_call_ir_r %i3, <IndirectCallTargets>, I[%i0, %i1, %i2], R[%r1], <CallDescr(riii) EF=7> -> %r0
  50  -live- %r0
  53  ref_return %r0
