Add support for PGO builds (fixes issue #2956)
This configuration applies to Official Release builds only. Chromium currently provides PGO profiles for Windows x86/x64, MacOS x64/ARM64 and Linux x64. Official builds for these platforms must run automate-git.py with the `--with-pgo-profiles` command-line flag. Official builds for other platforms must disable PGO builds by adding `chrome_pgo_phase=0` to GN_DEFINES.
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@ -809,6 +809,12 @@ parser.add_option(
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dest='arm64build',
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default=False,
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help='Create an ARM64 build.')
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parser.add_option(
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'--with-pgo-profiles',
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action='store_true',
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dest='withpgoprofiles',
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default=False,
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help='Download PGO profiles for the build.')
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# Test-related options.
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parser.add_option(
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@ -1261,6 +1267,9 @@ if not os.path.exists(gclient_file) or options.forceconfig:
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"'managed': False,"+\
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"'name': 'src', "+\
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"'url': '" + chromium_url + "', "+\
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"'custom_vars': {"+\
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"'checkout_pgo_profiles': " + ('True' if options.withpgoprofiles else 'False') + ", "+\
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"}, "+\
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"'custom_deps': {"+\
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"'build': None, "+\
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"'build/scripts/command_wrapper/bin': None, "+\
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@ -212,12 +212,6 @@ def GetRecommendedDefaultArgs():
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# distribution.
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'is_component_build': False,
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# Specify the current PGO phase. Default is 0 (turned off) for normal
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# builds and 2 (used during the optimization phase) for official Windows
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# and macOS builds. Currently turned off for CEF because it requires
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# additional setup and is not yet tested. See issue #2956.
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'chrome_pgo_phase': 0,
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# Disable support for background apps, which don't make sense with CEF.
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# Default is enabled on desktop platforms. This feature was also causing
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# strange shutdown crashes when using the Chrome runtime with a Debug
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