[llvm] r299993 - Avoid some string copies, NFC

[Vedant Kumar via llvm-commits]

Author: vedantk
Date: Tue Apr 11 17:11:46 2017
New Revision: 299993

URL: http://llvm.org/viewvc/llvm-project?rev=299993&view=rev
Log:
Avoid some string copies, NFC

Modified:
    llvm/trunk/tools/llvm-cat/llvm-cat.cpp

Modified: llvm/trunk/tools/llvm-cat/llvm-cat.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-cat/llvm-cat.cpp?rev=299993&r1=299992&r2=299993&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-cat/llvm-cat.cpp (original)
+++ llvm/trunk/tools/llvm-cat/llvm-cat.cpp Tue Apr 11 17:11:46 2017
@@ -40,7 +40,7 @@ int main(int argc, char **argv) {
   SmallVector<char, 0> Buffer;
   BitcodeWriter Writer(Buffer);
   if (BinaryCat) {
-    for (std::string InputFilename : InputFilenames) {
+    for (const auto &InputFilename : InputFilenames) {
       std::unique_ptr<MemoryBuffer> MB = ExitOnErr(
           errorOrToExpected(MemoryBuffer::getFileOrSTDIN(InputFilename)));
       std::vector<BitcodeModule> Mods = ExitOnErr(getBitcodeModuleList(*MB));
@@ -49,7 +49,7 @@ int main(int argc, char **argv) {
                       BitcodeMod.getBuffer().end());
     }
   } else {
-    for (std::string InputFilename : InputFilenames) {
+    for (const auto &InputFilename : InputFilenames) {
       SMDiagnostic Err;
       std::unique_ptr<Module> M = parseIRFile(InputFilename, Err, Context);
       if (!M) {