[llvm-readobj/ELF] Dump DT_VERDEF/DT_VERDEFNUM correctly.

[oota-llvm.git] / tools / llvm-cov / llvm-cov.cpp

diff --git a/tools/llvm-cov/llvm-cov.cpp b/tools/llvm-cov/llvm-cov.cpp
index 26aec4632b57ebfc1bb407e0d7f3b97725cfa46c..8c5acaef63b2561ca8518d57fc1a7c22fd708727 100644 (file)
--- a/tools/llvm-cov/llvm-cov.cpp
+++ b/tools/llvm-cov/llvm-cov.cpp
@@ -1,4 +1,4 @@
-//===- tools/llvm-cov/llvm-cov.cpp - LLVM coverage tool -------------------===//
+//===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -11,69 +11,76 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/GCOV.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryObject.h"
-#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/Signals.h"
-#include "llvm/Support/system_error.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/raw_ostream.h"
+#include <string>
+
 using namespace llvm;
 
-static cl::opt<bool>
-DumpGCOV("dump", cl::init(false), cl::desc("dump gcov file"));
+/// \brief The main entry point for the 'show' subcommand.
+int showMain(int argc, const char *argv[]);
 
-static cl::opt<std::string>
-InputGCNO("gcno", cl::desc("<input gcno file>"), cl::init(""));
+/// \brief The main entry point for the 'report' subcommand.
+int reportMain(int argc, const char *argv[]);
 
-static cl::opt<std::string>
-InputGCDA("gcda", cl::desc("<input gcda file>"), cl::init(""));
+/// \brief The main entry point for the 'convert-for-testing' subcommand.
+int convertForTestingMain(int argc, const char *argv[]);
 
+/// \brief The main entry point for the gcov compatible coverage tool.
+int gcovMain(int argc, const char *argv[]);
 
-//===----------------------------------------------------------------------===//
-int main(int argc, char **argv) {
-  // Print a stack trace if we signal out.
-  sys::PrintStackTraceOnErrorSignal();
-  PrettyStackTraceProgram X(argc, argv);
-  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+/// \brief Top level help.
+static int helpMain(int argc, const char *argv[]) {
+  errs() << "Usage: llvm-cov {gcov|report|show} [OPTION]...\n\n"
+         << "Shows code coverage information.\n\n"
+         << "Subcommands:\n"
+         << "  gcov:   Work with the gcov format.\n"
+         << "  show:   Annotate source files using instrprof style coverage.\n"
+         << "  report: Summarize instrprof style coverage information.\n";
+  return 0;
+}
 
-  cl::ParseCommandLineOptions(argc, argv, "llvm cov\n");
+/// \brief Top level version information.
+static int versionMain(int argc, const char *argv[]) {
+  cl::PrintVersionMessage();
+  return 0;
+}
 
-  GCOVFile GF;
-  if (InputGCNO.empty())
-    errs() << " " << argv[0] << ": No gcov input file!\n";
+int main(int argc, const char **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);
 
-  OwningPtr<MemoryBuffer> GCNO_Buff;
-  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCNO, GCNO_Buff)) {
-    errs() << InputGCNO << ": " << ec.message() << "\n";
-    return 1;
-  }
-  GCOVBuffer GCNO_GB(GCNO_Buff.take());
-  if (!GF.read(GCNO_GB)) {
-    errs() << "Invalid .gcno File!\n";
-    return 1;
-  }
+  // 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("gcov", gcovMain)
+                            .Case("report", reportMain)
+                            .Case("show", showMain)
+                            .Cases("-h", "-help", "--help", helpMain)
+                            .Cases("-version", "--version", versionMain)
+                            .Default(nullptr);
 
-  if (!InputGCDA.empty()) {
-    OwningPtr<MemoryBuffer> GCDA_Buff;
-    if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCDA, GCDA_Buff)) {
-      errs() << InputGCDA << ": " << ec.message() << "\n";
-      return 1;
-    }
-    GCOVBuffer GCDA_GB(GCDA_Buff.take());
-    if (!GF.read(GCDA_GB)) {
-      errs() << "Invalid .gcda File!\n";
-      return 1;
+    if (Func) {
+      std::string Invocation = std::string(argv[0]) + " " + argv[1];
+      argv[1] = Invocation.c_str();
+      return Func(argc - 1, argv + 1);
     }
   }
 
-
-  if (DumpGCOV)
-    GF.dump();
-
-  FileInfo FI;
-  GF.collectLineCounts(FI);
-  FI.print(InputGCNO, InputGCDA);
-  return 0;
+  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;
 }