   0  inline_call_r_r <JitCode 'allocate_instance__W_GroupBy'>, R[%r0] -> %r0
   6  -live- %r0, %r1, %r2
   6  inline_call_r_v <JitCode 'W_GroupBy.__init__'>, R[%r0, %r1, %r2]
  13  -live- %r0
  13  -live- %r0
  13  goto_if_not_ptr_iszero %r0, L1
  17  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  19  ---
  19  L1:
  19  ref_return %r0
