1 files changed, 62 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/transitions/LipoDataTransition.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/transitions/LipoDataTransition.java
new file mode 100644
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--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/transitions/LipoDataTransition.java
@@ -0,0 +1,62 @@
+// Copyright 2015 Google Inc. 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;
+    }
+
+    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;
+  }
+}