   0  getfield_gc_r %r0, FieldDescr<pypy.module.__pypy__.interp_builders.W_BytesBuilder.inst_builder> -> %r0
   5  -live- %r0
   8  goto_if_not_ptr_iszero %r0, L1
  12  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab32545788> -> %r0
  16  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<pypy.interpreter.error.OpErrFmtNoArgs.inst__value>
  21  setfield_gc_r %r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  26  assert_not_none %r0
  28  -live- %r0
  31  raise %r0
  33  ---
  33  L1:
  33  getfield_gc_i %r0, FieldDescr<stringbuilder.current_end> -> %i0
  38  getfield_gc_i %r0, FieldDescr<stringbuilder.current_pos> -> %i1
  43  int_sub %i0, %i1 -> %i0
  47  getfield_gc_i %r0, FieldDescr<stringbuilder.total_size> -> %i1
  52  int_sub %i1, %i0 -> %i0
  56  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab3c0185d0> -> %r0
  60  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  65  ref_return %r0
