   0  residual_call_r_r $<* fn find_executable>, R[%r0], <CallDescr(r) EF=7> -> %r0
   7  -live- %r0
   7  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000000174027cc8> -> %r1
  11  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  16  ref_return %r1
