   0  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x100923ea590> -> %r0
   4  inline_call_ir_r <JitCode 'll_alloc_and_set__GcArray_CharLlT_Signed_Char'>, I[%i0, $'\x00'], R[] -> %r1
  12  -live- %r0, %r1
  12  setfield_gc_r %r0, %r1, FieldDescr<pypy.module.__pypy__.bytebuffer.ByteBuffer.inst_data>
  17  setfield_gc_i %r0, $False, FieldDescr<rpython.rlib.buffer.Buffer.inst_readonly>
  22  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x1009242fb90> -> %r1
  26  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bufferobject.W_Buffer.inst_buf>
  31  ref_return %r1
