| // Copyright 2015 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.devtools.build.lib.rules.cpp.transitions; |
| |
| import com.google.devtools.build.lib.analysis.config.BuildConfiguration; |
| import com.google.devtools.build.lib.analysis.config.BuildOptions; |
| import com.google.devtools.build.lib.analysis.config.PatchTransition; |
| import com.google.devtools.build.lib.rules.cpp.CppOptions; |
| import com.google.devtools.build.lib.rules.cpp.FdoSupport; |
| import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig; |
| |
| /** |
| * Dynamic transition that turns off LIPO/FDO settings. |
| * |
| * <p>This is suitable, for example, when visiting data dependencies of a C++ rule built with LIPO. |
| */ |
| public final class LipoDataTransition implements PatchTransition { |
| public static final LipoDataTransition INSTANCE = new LipoDataTransition(); |
| |
| private LipoDataTransition() {} |
| |
| @Override |
| public BuildOptions apply(BuildOptions options) { |
| if (options.get(BuildConfiguration.Options.class).isHost) { |
| return options; |
| } |
| |
| // If this target and its transitive closure don't have C++ options, there's no |
| // LIPO context to change. |
| if (!options.contains(CppOptions.class)) { |
| return options; |
| } |
| |
| CppOptions cppOptions = options.get(CppOptions.class); |
| if (cppOptions.lipoMode == CrosstoolConfig.LipoMode.OFF) { |
| return options; |
| } |
| |
| options = options.clone(); |
| cppOptions = options.get(CppOptions.class); |
| |
| // Once autoFdoLipoData is on, it stays on (through all future transitions). |
| if (!cppOptions.autoFdoLipoData && cppOptions.fdoOptimize != null) { |
| cppOptions.autoFdoLipoData = FdoSupport.isAutoFdo(cppOptions.fdoOptimize); |
| } |
| cppOptions.lipoMode = CrosstoolConfig.LipoMode.OFF; |
| cppOptions.fdoInstrument = null; |
| cppOptions.fdoOptimize = null; |
| return options; |
| } |
| |
| @Override |
| public boolean defaultsToSelf() { |
| return false; |
| } |
| } |