//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
namespace llvm {
class Statistic {
+public:
const char *Name;
const char *Desc;
- unsigned Value;
- static unsigned NumStats;
-public:
- // Normal constructor, default initialize data item...
- Statistic(const char *name, const char *desc)
- : Name(name), Desc(desc), Value(0) {
- ++NumStats; // Keep track of how many stats are created...
- }
+ unsigned Value : 31;
+ bool Initialized : 1;
+
+ unsigned getValue() const { return Value; }
+ const char *getName() const { return Name; }
+ const char *getDesc() const { return Desc; }
- // Print information when destroyed, iff command line option is specified
- ~Statistic();
+ /// construct - This should only be called for non-global statistics.
+ void construct(const char *name, const char *desc) {
+ Name = name; Desc = desc;
+ Value = 0; Initialized = 0;
+ }
- // Allow use of this class as the value itself...
+ // Allow use of this class as the value itself.
operator unsigned() const { return Value; }
- const Statistic &operator=(unsigned Val) { Value = Val; return *this; }
- const Statistic &operator++() { ++Value; return *this; }
- unsigned operator++(int) { return Value++; }
- const Statistic &operator--() { --Value; return *this; }
- unsigned operator--(int) { return Value--; }
- const Statistic &operator+=(const unsigned &V) { Value += V; return *this; }
- const Statistic &operator-=(const unsigned &V) { Value -= V; return *this; }
- const Statistic &operator*=(const unsigned &V) { Value *= V; return *this; }
- const Statistic &operator/=(const unsigned &V) { Value /= V; return *this; }
+ const Statistic &operator=(unsigned Val) { Value = Val; return init(); }
+ const Statistic &operator++() { ++Value; return init(); }
+ unsigned operator++(int) { init(); return Value++; }
+ const Statistic &operator--() { --Value; return init(); }
+ unsigned operator--(int) { init(); return Value--; }
+ const Statistic &operator+=(const unsigned &V) { Value += V; return init(); }
+ const Statistic &operator-=(const unsigned &V) { Value -= V; return init(); }
+ const Statistic &operator*=(const unsigned &V) { Value *= V; return init(); }
+ const Statistic &operator/=(const unsigned &V) { Value /= V; return init(); }
+
+protected:
+ Statistic &init() {
+ if (!Initialized) RegisterStatistic();
+ return *this;
+ }
+ void RegisterStatistic();
};
+// STATISTIC - A macro to make definition of statistics really simple. This
+// automatically passes the DEBUG_TYPE of the file into the statistic.
+#define STATISTIC(VARNAME, DESC) \
+ static llvm::Statistic VARNAME = { DEBUG_TYPE, DESC, 0, 0 }
+
} // End llvm namespace
#endif