   0  -live- %r0
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.interpreter.buffer.BufferView_vtable.cls_as_str> -> %i0
   8  inline_call_ir_r <JitCode 'dispatcher'>, I[%i0], R[%r0] -> %r0
  16  -live- %r0
  16  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x00000001b9bc8608> -> %r1
  20  setfield_gc_r %r1, %r0, FieldDescr<rpython.rlib.buffer.StringBuffer.inst_value>
  25  setfield_gc_i %r1, $1, FieldDescr<rpython.rlib.buffer.Buffer.inst_readonly>
  30  ref_return %r1
