Reduce allocation of temporary values on heap.

- Use `std::move` while inserting temporary results into vectors.
- Change `push_back` to `emplace_back` where appropriate.

1 files changed, 2 insertions, 1 deletions

diff --git a/Source/cmAddCustomTargetCommand.cxx b/Source/cmAddCustomTargetCommand.cxx
index 819c781..cd1a376 100644
--- a/Source/cmAddCustomTargetCommand.cxx
+++ b/Source/cmAddCustomTargetCommand.cxx
@@ -3,6 +3,7 @@
 #include "cmAddCustomTargetCommand.h"
 
 #include <sstream>
+#include <utility>
 
 #include "cmCustomCommandLines.h"
 #include "cmGeneratorExpression.h"
@@ -127,7 +128,7 @@ bool cmAddCustomTargetCommand::InitialPass(
         case doing_depends: {
           std::string dep = copy;
           cmSystemTools::ConvertToUnixSlashes(dep);
-          depends.push_back(dep);
+          depends.push_back(std::move(dep));
         } break;
         case doing_comment:
           comment_buffer = copy;