   0  getfield_gc_r_pure %r0, FieldDescr<pypy.objspace.std.unicodeobject.W_UnicodeObject.inst__value> -> %r0
   5  unicodelen %r0 -> %i0
   8  residual_call_ir_r $<* fn _unicode_escape>, I[%i0], R[%r0], <CallDescr(ri) EF=4> -> %r0
  17  -live- %r0
  17  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff481d5aa0> -> %r1
  21  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  26  ref_return %r1
