/usr/include/llvm-3.9/llvm/ExecutionEngine/ is in llvm-3.9-dev 1:3.9.1-19ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/llvm-3.9/llvm/ExecutionEngine/ExecutionEngine.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/GenericValue.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Interpreter.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/JITEventListener.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/JITSymbolFlags.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/MCJIT.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/OProfileWrapper.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/ObjectCache.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/ObjectMemoryBuffer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/CompileUtils.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/ExecutionUtils.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/GlobalMappingLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/IRCompileLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/IRTransformLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/IndirectionUtils.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/JITSymbol.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/LambdaResolver.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/LazyEmittingLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/LogicalDylib.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/NullResolver.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/ObjectTransformLayer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/OrcABISupport.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/OrcError.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/OrcRemoteTargetRPCAPI.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/OrcRemoteTargetServer.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/RPCChannel.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/Orc/RPCUtils.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/OrcMCJITReplacement.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/RTDyldMemoryManager.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/RuntimeDyld.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/RuntimeDyldChecker.h
/usr/include/llvm-3.9/llvm/ExecutionEngine/SectionMemoryManager.h