llvm-cov.cpp
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//===- 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;
}