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| author | sebmarchand <sebmarchand@chromium.org> | 2016-01-04 14:28:39 -0800 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2016-01-04 22:29:36 +0000 |
| commit | 64c2bb0135460b7fb52e56f53d4b9369d7035eba (patch) | |
| tree | db08333eeb3248cddb43745081e69cb51b44e0db | |
| parent | ad5b312e155f67ae7d0a8e025e16c39682bc5baa (diff) | |
| download | chromium_src-64c2bb0135460b7fb52e56f53d4b9369d7035eba.zip chromium_src-64c2bb0135460b7fb52e56f53d4b9369d7035eba.tar.gz chromium_src-64c2bb0135460b7fb52e56f53d4b9369d7035eba.tar.bz2 | |
Add support for PGO in the Win GN builds.
PGO is only used on chrome_child.dll for now.
BUG=512851
Review URL: https://codereview.chromium.org/1556093002
Cr-Commit-Position: refs/heads/master@{#367389}
| -rw-r--r-- | chrome/BUILD.gn | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn index 0548573..d741423 100644 --- a/chrome/BUILD.gn +++ b/chrome/BUILD.gn @@ -18,6 +18,15 @@ declare_args() { # up when Chrome is not run from the command line, so should only be used for # development. Only has an effect on Windows builds. win_console_app = false + + # Specify the current PGO phase, only used for the Windows MSVS build. Here's + # the different values that can be used: + # 0 : Means that PGO is turned off. + # 1 : Used during the PGI (instrumentation) phase. + # 2 : Used during the PGO (optimization) phase. + # + # TODO(sebmarchand): Add support for the PGU (update) phase. + chrome_pgo_phase = 0 } if (is_android) { @@ -332,8 +341,6 @@ if (is_mac || is_win) { configs -= [ "//build/config/win:default_incremental_linking" ] configs += [ "//build/config/win:default_large_module_incremental_linking" ] - - # TODO(GYP) bug 512851: PGO. } if (use_aura) { @@ -421,21 +428,17 @@ if (is_mac || is_win) { configs -= [ "//build/config/win:default_incremental_linking" ] configs += [ "//build/config/win:no_incremental_linking" ] } - # TODO(GYP) bug 512851: PGO on Windows. - # ['chrome_pgo_phase==1', { - # 'msvs_settings': { - # 'VCLinkerTool': { - # 'LinkTimeCodeGeneration': '2', - # }, - # }, - # }], - # ['chrome_pgo_phase==2', { - # 'msvs_settings': { - # 'VCLinkerTool': { - # 'LinkTimeCodeGeneration': '3', - # }, - # }, - # }], + if (chrome_pgo_phase > 0) { + configs += [ "//build/config/compiler:optimize_max" ] + } + if (chrome_pgo_phase == 1) { + ldflags = [ + "/LTCG:PGINSTRUMENT", + "/PogoSafeMode", + ] + } else if (chrome_pgo_phase == 2) { + ldflags = [ "/LTCG:PGOPTIMIZE" ] + } } if (enable_configuration_policy) { |