-// -debug - Command line option to enable the DEBUG statements in the passes.
-static cl::opt<bool, true>
-Debug("debug", cl::desc("Enable debug output"), cl::Hidden,
- cl::location(DebugFlag));
-
-// Print information when destroyed, iff command line option is specified
-void StatisticBase::destroy() const {
- if (Enabled && hasSomeData()) {
- std::cerr.width(7);
- printValue(std::cerr);
- std::cerr.width(0);
- std::cerr << "\t" << Name << "\n";
+
+namespace {
+/// StatisticInfo - This class is used in a ManagedStatic so that it is created
+/// on demand (when the first statistic is bumped) and destroyed only when
+/// llvm_shutdown is called. We print statistics from the destructor.
+class StatisticInfo {
+ std::vector<const Statistic*> Stats;
+public:
+ ~StatisticInfo();
+
+ void addStatistic(const Statistic *S) {
+ Stats.push_back(S);
+ }
+};
+}
+
+static ManagedStatic<StatisticInfo> StatInfo;
+
+
+/// RegisterStatistic - The first time a statistic is bumped, this method is
+/// called.
+void Statistic::RegisterStatistic() {
+ // If stats are enabled, inform StatInfo that this statistic should be
+ // printed.
+ if (Enabled)
+ StatInfo->addStatistic(this);
+ // Remember we have been registered.
+ Initialized = true;
+}
+
+namespace {
+
+struct NameCompare {
+ bool operator()(const Statistic *LHS, const Statistic *RHS) const {
+ int Cmp = std::strcmp(LHS->getName(), RHS->getName());
+ if (Cmp != 0) return Cmp < 0;
+
+ // Secondary key is the description.
+ return std::strcmp(LHS->getDesc(), RHS->getDesc()) < 0;
+ }
+};
+
+}
+
+// Print information when destroyed, iff command line option is specified.
+StatisticInfo::~StatisticInfo() {
+ // Statistics not enabled?
+ if (Stats.empty()) return;
+
+ // Get the stream to write to.
+ std::ostream &OutStream = *GetLibSupportInfoOutputFile();
+
+ // Figure out how long the biggest Value and Name fields are.
+ unsigned MaxNameLen = 0, MaxValLen = 0;
+ for (size_t i = 0, e = Stats.size(); i != e; ++i) {
+ MaxValLen = std::max(MaxValLen,
+ (unsigned)utostr(Stats[i]->getValue()).size());
+ MaxNameLen = std::max(MaxNameLen,
+ (unsigned)std::strlen(Stats[i]->getName()));
+ }
+
+ // Sort the fields by name.
+ std::stable_sort(Stats.begin(), Stats.end(), NameCompare());
+
+ // Print out the statistics header...
+ OutStream << "===" << std::string(73, '-') << "===\n"
+ << " ... Statistics Collected ...\n"
+ << "===" << std::string(73, '-') << "===\n\n";
+
+ // Print all of the statistics.
+ for (size_t i = 0, e = Stats.size(); i != e; ++i) {
+ std::string CountStr = utostr(Stats[i]->getValue());
+ OutStream << std::string(MaxValLen-CountStr.size(), ' ')
+ << CountStr << " " << Stats[i]->getName()
+ << std::string(MaxNameLen-std::strlen(Stats[i]->getName()), ' ')
+ << " - " << Stats[i]->getDesc() << "\n";
+