   0  residual_call_r_i $<* fn ccall_getpgrp___>, R[], <CallDescr() EF=7> -> %i0
   6  -live- %i0
   9  inline_call_ir_i <JitCode 'handle_posix_error__getpgrp'>, I[%i0], R[$<* struct rpy_string>] -> %i0
  17  -live- %i0
  20  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000055d2f3f9d9b8> -> %r0
  24  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  29  ref_return %r0
