code: def get_flags_opt(self):
      return ["-O3"]
  
file_path: numpy/numpy/distutils/fcompiler/ibm.py
imports: import os
  import re
  import sys
  import subprocess
  from numpy.distutils.fcompiler import FCompiler
  from numpy.distutils.exec_command import find_executable
  from numpy.distutils.misc_util import make_temp_file
  from distutils import log
label_desc: Use image node_id 5 for calling the IBMFCompiler obj's underlying member method code with example usage: obj.get_flags_opt() and returns: list