   0  residual_call_r_r $<* fn find_executable>, R[%r0], <CallDescr(r) EF=7> -> %r0
   7  -live- %r0
  10  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab42d25440> -> %r1
  14  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  19  ref_return %r1
