   0  -live- %r0, %r1, %r2, %r3
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.objspace.std.bytesobject.W_AbstractBytesObject_vtable.cls_descr_startswith> -> %i0
   8  -live- %i0, %r0, %r1, %r2, %r3
   8  switch %i0, <SwitchDictDescr 0:L1, 1:L2>
  12  unreachable
  13  ---
  13  L1:
  13  -live- %r0, %r1, %r2, %r3
  13  residual_call_r_r $<* fn W_BytesObject.descr_startswith>, R[%r0, %r1, %r2, %r3], <CallDescr(rrrr) EF=7> -> %r0
  23  -live- %r0
  23  ref_return %r0
  25  ---
  25  L2:
  25  -live-
  25  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
