gyptest-link-ltcg.py

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#!/usr/bin/env python

# Copyright (c) 2013 Google Inc. All rights reserved.

# Use of this source code is governed by a BSD-style license that can be

# found in the LICENSE file.

"""

Make sure LTCG is working properly.

"""

import TestGyp

import sys

if sys.platform == 'win32':

  test = TestGyp.TestGyp(formats=['msvs', 'ninja'])

  CHDIR = 'linker-flags'

  test.run_gyp('ltcg.gyp', chdir=CHDIR)

  # Here we expect LTCG is able to inline functions beyond compile unit.

  # Note: This marker is embedded in 'inline_test_main.cc'

  INLINE_MARKER = '==== inlined ===='

  # link.exe generates following lines when LTCG is enabled.

  # Note: Future link.exe may or may not generate them. Update as needed.

  LTCG_LINKER_MESSAGES = ['Generating code', 'Finished generating code']

  # test 'LinkTimeCodeGenerationOptionDefault'

  test.build('ltcg.gyp', 'test_ltcg_off', chdir=CHDIR)

  test.run_built_executable('test_ltcg_off', chdir=CHDIR)

  test.must_not_contain_any_line(test.stdout(), [INLINE_MARKER])

  # test 'LinkTimeCodeGenerationOptionUse'

  test.build('ltcg.gyp', 'test_ltcg_on', chdir=CHDIR)

  if test.format == 'ninja':

    # Make sure ninja win_tool.py filters out noisy lines.

    test.must_not_contain_any_line(test.stdout(), LTCG_LINKER_MESSAGES)

  elif test.format == 'msvs':

    test.must_contain_any_line(test.stdout(), LTCG_LINKER_MESSAGES)

  test.run_built_executable('test_ltcg_on', chdir=CHDIR)

  test.must_contain_any_line(test.stdout(), [INLINE_MARKER])

  test.pass_test()