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-rw-r--r--include/Support/StatisticReporter.h90
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diff --git a/include/Support/StatisticReporter.h b/include/Support/StatisticReporter.h
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--- a/include/Support/StatisticReporter.h
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-//===-- Support/StatisticReporter.h - Easy way to expose stats ---*- C++ -*-==//
-//
-// This file defines the 'Statistic' class, which is designed to be an easy way
-// to expose various success metrics from passes. These statistics are printed
-// at the end of a run, when the -stats command line option is enabled on the
-// command line.
-//
-// This is useful for reporting information like the number of instructions
-// simplified, optimized or removed by various transformations, like this:
-//
-// static Statistic<> NumInstEliminated("GCSE - Number of instructions killed");
-//
-// Later, in the code: ++NumInstEliminated;
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef SUPPORT_STATISTIC_REPORTER_H
-#define SUPPORT_STATISTIC_REPORTER_H
-
-#include <iosfwd>
-
-// DebugFlag - This boolean is set to true if the '-debug' command line option
-// is specified. This should probably not be referenced directly, instead, use
-// the DEBUG macro below.
-//
-extern bool DebugFlag;
-
-// DEBUG macro - This macro should be used by passes to emit debug information.
-// In the '-debug' option is specified on the commandline, and if this is a
-// debug build, then the code specified as the option to the macro will be
-// executed. Otherwise it will not be. Example:
-//
-// DEBUG(cerr << "Bitset contains: " << Bitset << "\n");
-//
-#ifdef NDEBUG
-#define DEBUG(X)
-#else
-#define DEBUG(X) \
- do { if (DebugFlag) { X; } } while (0)
-#endif
-
-
-// StatisticBase - Nontemplated base class for Statistic<> class...
-class StatisticBase {
- const char *Name;
-protected:
- StatisticBase(const char *name) : Name(name) {}
- virtual ~StatisticBase() {}
-
- // destroy - Called by subclass dtor so that we can still invoke virtual
- // functions on the subclass.
- void destroy() const;
-
- // printValue - Overridden by template class to print out the value type...
- virtual void printValue(std::ostream &o) const = 0;
-
- // hasSomeData - Return true if some data has been aquired. Avoid printing
- // lots of zero counts.
- //
- virtual bool hasSomeData() const = 0;
-};
-
-// Statistic Class - templated on the data type we are monitoring...
-template <typename DataType=unsigned>
-class Statistic : private StatisticBase {
- DataType Value;
-
- virtual void printValue(std::ostream &o) const { o << Value; }
- virtual bool hasSomeData() const { return Value != DataType(); }
-public:
- // Normal constructor, default initialize data item...
- Statistic(const char *name) : StatisticBase(name), Value(DataType()) {}
-
- // Constructor to provide an initial value...
- Statistic(const DataType &Val, const char *name)
- : StatisticBase(name), Value(Val) {}
-
- // Print information when destroyed, iff command line option is specified
- ~Statistic() { destroy(); }
-
- // Allow use of this class as the value itself...
- inline operator DataType() const { return Value; }
- inline const DataType &operator=(DataType Val) { Value = Val; return Value; }
- inline const DataType &operator++() { return ++Value; }
- inline DataType operator++(int) { return Value++; }
- inline const DataType &operator+=(const DataType &V) { return Value += V; }
- inline const DataType &operator-=(const DataType &V) { return Value -= V; }
-};
-
-#endif