   0  -live- %r1
   0  goto_if_not_ptr_iszero %r1, L1
   4  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000000018e6b98a0> -> %r0
   8  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<pypy.interpreter.error.OpErrFmtNoArgs.inst__value>
  13  setfield_gc_r %r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  18  assert_not_none %r0
  20  -live- %r0
  20  guard_class %r0 -> %i0
  23  -live- %r0
  23  raise %r0
  25  ---
  25  L1:
  25  ref_return %r1
