diff --git a/tools/llvm-cov/llvm-cov.cpp b/tools/llvm-cov/llvm-cov.cpp
index ce5ff9c450e..7b21c5bae20 100644
--- a/tools/llvm-cov/llvm-cov.cpp
+++ b/tools/llvm-cov/llvm-cov.cpp
@@ -16,15 +16,11 @@
 #include "llvm/Support/GCOV.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryObject.h"
-#include "llvm/Support/Path.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/system_error.h"
 using namespace llvm;
 
-static cl::opt<std::string>
-InputFilename(cl::Positional, cl::desc("source filename"), cl::init(""));
-
 static cl::opt<bool>
 DumpGCOV("dump", cl::init(false), cl::desc("dump gcov file"));
 
@@ -44,23 +40,6 @@ int main(int argc, char **argv) {
 
   cl::ParseCommandLineOptions(argc, argv, "llvm cov\n");
 
-  if (InputFilename.empty()) {
-    // FIXME: Error out here.
-  }
-
-  sys::Path SrcFile(InputFilename);
-
-  sys::Path GCNOFile(SrcFile);
-  GCNOFile.eraseSuffix();
-  GCNOFile.appendSuffix(".gcno");
-
-  sys::Path GCDAFile(SrcFile);
-  GCDAFile.eraseSuffix();
-  GCDAFile.appendSuffix(".gcda");
-
-  sys::Path OutputFile(SrcFile);
-  OutputFile.appendSuffix(".gcov");
-
   GCOVFile GF;
   if (InputGCNO.empty())
     errs() << " " << argv[0] << ": No gcov input file!\n";