1 files changed, 95 insertions, 0 deletions
diff --git a/llvm/tools/llvm-cov/llvm-cov.cpp b/llvm/tools/llvm-cov/llvm-cov.cpp
new file mode 100644
index 000000000000..172ec9f3cedf
--- /dev/null
+++ b/llvm/tools/llvm-cov/llvm-cov.cpp
@@ -0,0 +1,95 @@
+//===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// llvm-cov is a command line tools to analyze and report coverage information.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/raw_ostream.h"
+#include <string>
+
+using namespace llvm;
+
+/// The main entry point for the 'show' subcommand.
+int showMain(int argc, const char *argv[]);
+
+/// The main entry point for the 'report' subcommand.
+int reportMain(int argc, const char *argv[]);
+
+/// The main entry point for the 'export' subcommand.
+int exportMain(int argc, const char *argv[]);
+
+/// The main entry point for the 'convert-for-testing' subcommand.
+int convertForTestingMain(int argc, const char *argv[]);
+
+/// The main entry point for the gcov compatible coverage tool.
+int gcovMain(int argc, const char *argv[]);
+
+/// Top level help.
+static int helpMain(int argc, const char *argv[]) {
+  errs() << "Usage: llvm-cov {export|gcov|report|show} [OPTION]...\n\n"
+         << "Shows code coverage information.\n\n"
+         << "Subcommands:\n"
+         << "  export: Export instrprof file to structured format.\n"
+         << "  gcov:   Work with the gcov format.\n"
+         << "  report: Summarize instrprof style coverage information.\n"
+         << "  show:   Annotate source files using instrprof style coverage.\n";
+
+  return 0;
+}
+
+/// Top level version information.
+static int versionMain(int argc, const char *argv[]) {
+  cl::PrintVersionMessage();
+  return 0;
+}
+
+int main(int argc, const char **argv) {
+  InitLLVM X(argc, argv);
+
+  // If argv[0] is or ends with 'gcov', always be gcov compatible
+  if (sys::path::stem(argv[0]).endswith_lower("gcov"))
+    return gcovMain(argc, argv);
+
+  // Check if we are invoking a specific tool command.
+  if (argc > 1) {
+    typedef int (*MainFunction)(int, const char *[]);
+    MainFunction Func = StringSwitch<MainFunction>(argv[1])
+                            .Case("convert-for-testing", convertForTestingMain)
+                            .Case("export", exportMain)
+                            .Case("gcov", gcovMain)
+                            .Case("report", reportMain)
+                            .Case("show", showMain)
+                            .Cases("-h", "-help", "--help", helpMain)
+                            .Cases("-version", "--version", versionMain)
+                            .Default(nullptr);
+
+    if (Func) {
+      std::string Invocation = std::string(argv[0]) + " " + argv[1];
+      argv[1] = Invocation.c_str();
+      return Func(argc - 1, argv + 1);
+    }
+  }
+
+  if (argc > 1) {
+    if (sys::Process::StandardErrHasColors())
+      errs().changeColor(raw_ostream::RED);
+    errs() << "Unrecognized command: " << argv[1] << ".\n\n";
+    if (sys::Process::StandardErrHasColors())
+      errs().resetColor();
+  }
+  helpMain(argc, argv);
+  return 1;
+}