Apply most suggestions of clang-tidy's performance-unnecessary-value-param

Avoids unnecessary copies. All changes audited & pass tests with asan.
No functional change intended.

llvm-svn: 272190

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/tools/bugpoint/ExecutionDriver.cpp b/llvm/tools/bugpoint/ExecutionDriver.cpp
index 41b8ccc18e8..ab9c05fa924 100644
--- a/llvm/tools/bugpoint/ExecutionDriver.cpp
+++ b/llvm/tools/bugpoint/ExecutionDriver.cpp
@@ -384,7 +384,7 @@ std::string BugDriver::executeProgram(const Module *Program,
 /// backend, if reference output is not provided.
 ///
 std::string BugDriver::executeProgramSafely(const Module *Program,
-                                            std::string OutputFile,
+                                            const std::string &OutputFile,
                                             std::string *Error) const {
   return executeProgram(Program, OutputFile, "", "", SafeInterpreter, Error);
 }