Add the llvm-cov and llvm-profdata tools, when WITH_CLANG_EXTRAS is

defined.  These help with processing coverage and profile data.

1 files changed, 283 insertions, 0 deletions

diff --git a/contrib/llvm/tools/llvm-profdata/llvm-profdata.cpp b/contrib/llvm/tools/llvm-profdata/llvm-profdata.cpp
new file mode 100644
index 0000000..25531c7
--- /dev/null
+++ b/contrib/llvm/tools/llvm-profdata/llvm-profdata.cpp
@@ -0,0 +1,283 @@
+//===- llvm-profdata.cpp - LLVM profile data tool -------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// llvm-profdata merges .profdata files.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/ProfileData/InstrProfReader.h"
+#include "llvm/ProfileData/InstrProfWriter.h"
+#include "llvm/ProfileData/SampleProfReader.h"
+#include "llvm/ProfileData/SampleProfWriter.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace llvm;
+
+static void exitWithError(const Twine &Message, StringRef Whence = "") {
+  errs() << "error: ";
+  if (!Whence.empty())
+    errs() << Whence << ": ";
+  errs() << Message << "\n";
+  ::exit(1);
+}
+
+enum ProfileKinds { instr, sample };
+
+void mergeInstrProfile(cl::list<std::string> Inputs, StringRef OutputFilename) {
+  if (OutputFilename.compare("-") == 0)
+    exitWithError("Cannot write indexed profdata format to stdout.");
+
+  std::error_code EC;
+  raw_fd_ostream Output(OutputFilename.data(), EC, sys::fs::F_None);
+  if (EC)
+    exitWithError(EC.message(), OutputFilename);
+
+  InstrProfWriter Writer;
+  for (const auto &Filename : Inputs) {
+    auto ReaderOrErr = InstrProfReader::create(Filename);
+    if (std::error_code ec = ReaderOrErr.getError())
+      exitWithError(ec.message(), Filename);
+
+    auto Reader = std::move(ReaderOrErr.get());
+    for (const auto &I : *Reader)
+      if (std::error_code EC =
+              Writer.addFunctionCounts(I.Name, I.Hash, I.Counts))
+        errs() << Filename << ": " << I.Name << ": " << EC.message() << "\n";
+    if (Reader->hasError())
+      exitWithError(Reader->getError().message(), Filename);
+  }
+  Writer.write(Output);
+}
+
+void mergeSampleProfile(cl::list<std::string> Inputs, StringRef OutputFilename,
+                        sampleprof::SampleProfileFormat OutputFormat) {
+  using namespace sampleprof;
+  auto WriterOrErr = SampleProfileWriter::create(OutputFilename, OutputFormat);
+  if (std::error_code EC = WriterOrErr.getError())
+    exitWithError(EC.message(), OutputFilename);
+
+  auto Writer = std::move(WriterOrErr.get());
+  StringMap<FunctionSamples> ProfileMap;
+  for (const auto &Filename : Inputs) {
+    auto ReaderOrErr =
+        SampleProfileReader::create(Filename, getGlobalContext());
+    if (std::error_code EC = ReaderOrErr.getError())
+      exitWithError(EC.message(), Filename);
+
+    auto Reader = std::move(ReaderOrErr.get());
+    if (std::error_code EC = Reader->read())
+      exitWithError(EC.message(), Filename);
+
+    StringMap<FunctionSamples> &Profiles = Reader->getProfiles();
+    for (StringMap<FunctionSamples>::iterator I = Profiles.begin(),
+                                              E = Profiles.end();
+         I != E; ++I) {
+      StringRef FName = I->first();
+      FunctionSamples &Samples = I->second;
+      ProfileMap[FName].merge(Samples);
+    }
+  }
+  Writer->write(ProfileMap);
+}
+
+int merge_main(int argc, const char *argv[]) {
+  cl::list<std::string> Inputs(cl::Positional, cl::Required, cl::OneOrMore,
+                               cl::desc("<filenames...>"));
+
+  cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
+                                      cl::init("-"), cl::Required,
+                                      cl::desc("Output file"));
+  cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
+                            cl::aliasopt(OutputFilename));
+  cl::opt<ProfileKinds> ProfileKind(
+      cl::desc("Profile kind:"), cl::init(instr),
+      cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
+                 clEnumVal(sample, "Sample profile"), clEnumValEnd));
+
+  cl::opt<sampleprof::SampleProfileFormat> OutputFormat(
+      cl::desc("Format of output profile (only meaningful with --sample)"),
+      cl::init(sampleprof::SPF_Binary),
+      cl::values(clEnumValN(sampleprof::SPF_Binary, "binary",
+                            "Binary encoding (default)"),
+                 clEnumValN(sampleprof::SPF_Text, "text", "Text encoding"),
+                 clEnumValN(sampleprof::SPF_GCC, "gcc", "GCC encoding"),
+                 clEnumValEnd));
+
+  cl::ParseCommandLineOptions(argc, argv, "LLVM profile data merger\n");
+
+  if (ProfileKind == instr)
+    mergeInstrProfile(Inputs, OutputFilename);
+  else
+    mergeSampleProfile(Inputs, OutputFilename, OutputFormat);
+
+  return 0;
+}
+
+int showInstrProfile(std::string Filename, bool ShowCounts,
+                     bool ShowAllFunctions, std::string ShowFunction,
+                     raw_fd_ostream &OS) {
+  auto ReaderOrErr = InstrProfReader::create(Filename);
+  if (std::error_code EC = ReaderOrErr.getError())
+    exitWithError(EC.message(), Filename);
+
+  auto Reader = std::move(ReaderOrErr.get());
+  uint64_t MaxFunctionCount = 0, MaxBlockCount = 0;
+  size_t ShownFunctions = 0, TotalFunctions = 0;
+  for (const auto &Func : *Reader) {
+    bool Show =
+        ShowAllFunctions || (!ShowFunction.empty() &&
+                             Func.Name.find(ShowFunction) != Func.Name.npos);
+
+    ++TotalFunctions;
+    assert(Func.Counts.size() > 0 && "function missing entry counter");
+    if (Func.Counts[0] > MaxFunctionCount)
+      MaxFunctionCount = Func.Counts[0];
+
+    if (Show) {
+      if (!ShownFunctions)
+        OS << "Counters:\n";
+      ++ShownFunctions;
+
+      OS << "  " << Func.Name << ":\n"
+         << "    Hash: " << format("0x%016" PRIx64, Func.Hash) << "\n"
+         << "    Counters: " << Func.Counts.size() << "\n"
+         << "    Function count: " << Func.Counts[0] << "\n";
+    }
+
+    if (Show && ShowCounts)
+      OS << "    Block counts: [";
+    for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) {
+      if (Func.Counts[I] > MaxBlockCount)
+        MaxBlockCount = Func.Counts[I];
+      if (Show && ShowCounts)
+        OS << (I == 1 ? "" : ", ") << Func.Counts[I];
+    }
+    if (Show && ShowCounts)
+      OS << "]\n";
+  }
+  if (Reader->hasError())
+    exitWithError(Reader->getError().message(), Filename);
+
+  if (ShowAllFunctions || !ShowFunction.empty())
+    OS << "Functions shown: " << ShownFunctions << "\n";
+  OS << "Total functions: " << TotalFunctions << "\n";
+  OS << "Maximum function count: " << MaxFunctionCount << "\n";
+  OS << "Maximum internal block count: " << MaxBlockCount << "\n";
+  return 0;
+}
+
+int showSampleProfile(std::string Filename, bool ShowCounts,
+                      bool ShowAllFunctions, std::string ShowFunction,
+                      raw_fd_ostream &OS) {
+  using namespace sampleprof;
+  auto ReaderOrErr = SampleProfileReader::create(Filename, getGlobalContext());
+  if (std::error_code EC = ReaderOrErr.getError())
+    exitWithError(EC.message(), Filename);
+
+  auto Reader = std::move(ReaderOrErr.get());
+  Reader->read();
+  if (ShowAllFunctions || ShowFunction.empty())
+    Reader->dump(OS);
+  else
+    Reader->dumpFunctionProfile(ShowFunction, OS);
+
+  return 0;
+}
+
+int show_main(int argc, const char *argv[]) {
+  cl::opt<std::string> Filename(cl::Positional, cl::Required,
+                                cl::desc("<profdata-file>"));
+
+  cl::opt<bool> ShowCounts("counts", cl::init(false),
+                           cl::desc("Show counter values for shown functions"));
+  cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false),
+                                 cl::desc("Details for every function"));
+  cl::opt<std::string> ShowFunction("function",
+                                    cl::desc("Details for matching functions"));
+
+  cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
+                                      cl::init("-"), cl::desc("Output file"));
+  cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
+                            cl::aliasopt(OutputFilename));
+  cl::opt<ProfileKinds> ProfileKind(
+      cl::desc("Profile kind:"), cl::init(instr),
+      cl::values(clEnumVal(instr, "Instrumentation profile (default)"),
+                 clEnumVal(sample, "Sample profile"), clEnumValEnd));
+
+  cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
+
+  if (OutputFilename.empty())
+    OutputFilename = "-";
+
+  std::error_code EC;
+  raw_fd_ostream OS(OutputFilename.data(), EC, sys::fs::F_Text);
+  if (EC)
+    exitWithError(EC.message(), OutputFilename);
+
+  if (ShowAllFunctions && !ShowFunction.empty())
+    errs() << "warning: -function argument ignored: showing all functions\n";
+
+  if (ProfileKind == instr)
+    return showInstrProfile(Filename, ShowCounts, ShowAllFunctions,
+                            ShowFunction, OS);
+  else
+    return showSampleProfile(Filename, ShowCounts, ShowAllFunctions,
+                             ShowFunction, OS);
+}
+
+int main(int argc, const 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.
+
+  StringRef ProgName(sys::path::filename(argv[0]));
+  if (argc > 1) {
+    int (*func)(int, const char *[]) = nullptr;
+
+    if (strcmp(argv[1], "merge") == 0)
+      func = merge_main;
+    else if (strcmp(argv[1], "show") == 0)
+      func = show_main;
+
+    if (func) {
+      std::string Invocation(ProgName.str() + " " + argv[1]);
+      argv[1] = Invocation.c_str();
+      return func(argc - 1, argv + 1);
+    }
+
+    if (strcmp(argv[1], "-h") == 0 ||
+        strcmp(argv[1], "-help") == 0 ||
+        strcmp(argv[1], "--help") == 0) {
+
+      errs() << "OVERVIEW: LLVM profile data tools\n\n"
+             << "USAGE: " << ProgName << " <command> [args...]\n"
+             << "USAGE: " << ProgName << " <command> -help\n\n"
+             << "Available commands: merge, show\n";
+      return 0;
+    }
+  }
+
+  if (argc < 2)
+    errs() << ProgName << ": No command specified!\n";
+  else
+    errs() << ProgName << ": Unknown command!\n";
+
+  errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n";
+  return 1;
+}