1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/tools/llvm-profdata/llvm-profdata.cpp b/llvm/tools/llvm-profdata/llvm-profdata.cpp
index 25531c776a3..0137e35c52f 100644
--- a/llvm/tools/llvm-profdata/llvm-profdata.cpp
+++ b/llvm/tools/llvm-profdata/llvm-profdata.cpp
@@ -38,7 +38,8 @@ static void exitWithError(const Twine &Message, StringRef Whence = "") {
 
 enum ProfileKinds { instr, sample };
 
-void mergeInstrProfile(cl::list<std::string> Inputs, StringRef OutputFilename) {
+void mergeInstrProfile(const cl::list<std::string> &Inputs,
+                       StringRef OutputFilename) {
   if (OutputFilename.compare("-") == 0)
     exitWithError("Cannot write indexed profdata format to stdout.");
 
@@ -64,7 +65,8 @@ void mergeInstrProfile(cl::list<std::string> Inputs, StringRef OutputFilename) {
   Writer.write(Output);
 }
 
-void mergeSampleProfile(cl::list<std::string> Inputs, StringRef OutputFilename,
+void mergeSampleProfile(const cl::list<std::string> &Inputs,
+                        StringRef OutputFilename,
                         sampleprof::SampleProfileFormat OutputFormat) {
   using namespace sampleprof;
   auto WriterOrErr = SampleProfileWriter::create(OutputFilename, OutputFormat);