Apply clang-tidy's performance-unnecessary-value-param to parts of clang.

No functionality change intended.

llvm-svn: 298443
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index d1aae08..35c31a0 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -953,7 +953,7 @@
     return llvm::make_unique<lto::NativeObjectStream>(std::move(OS));
   };
   lto::Config Conf;
-  Conf.SampleProfile = SampleProfile;
+  Conf.SampleProfile = std::move(SampleProfile);
   if (Error E = thinBackend(
           Conf, 0, AddStream, *M, *CombinedIndex, ImportList,
           ModuleToDefinedGVSummaries[M->getModuleIdentifier()], ModuleMap)) {