   0  getfield_gc_r %r0, FieldDescr<pypy.module.__pypy__.interp_builders.W_BytesBuilder.inst_builder> -> %r0
   5  inline_call_r_v <JitCode 'll_jit_append__stringbuilderPtr_rpy_stringPtr'>, R[%r0, %r1]
  11  -live-
  14  void_return
