   0  residual_call_r_r $<* fn find_executable>, R[%r0], <CallDescr(r) EF=7> -> %r0
   7  -live- %r0
   7  -live- %r0
   7  goto_if_not_ptr_iszero %r0, L1
  11  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  13  ---
  13  L1:
  13  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x10096124f10> -> %r1
  17  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  22  ref_return %r1
