| // Copyright 2017 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.BuildOptions; |
| import com.google.devtools.build.lib.analysis.config.transitions.PatchTransition; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.rules.cpp.CppOptions; |
| import com.google.devtools.build.lib.rules.cpp.CppOptions.LipoConfigurationState; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec.VisibleForSerialization; |
| import java.util.Objects; |
| |
| /** |
| * Configuration transition that turns on LIPO/FDO settings for configurations that have them |
| * disabled. |
| */ |
| @Immutable |
| @AutoCodec |
| public class EnableLipoTransition implements PatchTransition { |
| private final Label ruleLabel; |
| private final int hashCode; |
| |
| /** |
| * Creates a new transition that only triggers on the given rule. This can be used for |
| * restricting this transition to the LIPO context binary. |
| */ |
| public EnableLipoTransition(Label ruleLabel) { |
| this(ruleLabel, Objects.hashCode(ruleLabel)); |
| } |
| |
| @VisibleForSerialization |
| @AutoCodec.Instantiator |
| EnableLipoTransition(Label ruleLabel, int hashCode) { |
| this.ruleLabel = ruleLabel; |
| this.hashCode = hashCode; |
| } |
| |
| @Override |
| public BuildOptions apply(BuildOptions options) { |
| CppOptions cppOptions = options.get(CppOptions.class); |
| if (!cppOptions.isDataConfigurationForLipoOptimization() |
| || !ruleLabel.equals(cppOptions.getLipoContextForBuild())) { |
| return options; |
| } |
| BuildOptions lipoEnabledOptions = options.clone(); |
| lipoEnabledOptions.get(CppOptions.class).lipoConfigurationState = |
| LipoConfigurationState.APPLY_LIPO; |
| return lipoEnabledOptions; |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| if (this == other) { |
| return true; |
| } else if (!(other instanceof EnableLipoTransition)) { |
| return false; |
| } |
| return ruleLabel.equals(((EnableLipoTransition) other).ruleLabel); |
| } |
| |
| @Override |
| public int hashCode() { |
| return hashCode; |
| } |
| } |