mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
9769ab2226
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21408 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
//===-- llvm/ADT/Statistic.h - Easy way to expose stats ---------*- C++ -*-===//
|
|
//
|
|
// 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 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<> NumInstsKilled("gcse", "Number of instructions killed");
|
|
//
|
|
// Later, in the code: ++NumInstsKilled;
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ADT_STATISTIC_H
|
|
#define LLVM_ADT_STATISTIC_H
|
|
|
|
#include <iostream>
|
|
|
|
namespace llvm {
|
|
|
|
// StatisticBase - Nontemplated base class for Statistic<> class...
|
|
class StatisticBase {
|
|
const char *Name;
|
|
const char *Desc;
|
|
static unsigned NumStats;
|
|
protected:
|
|
StatisticBase(const char *name, const char *desc) : Name(name), Desc(desc) {
|
|
++NumStats; // Keep track of how many stats are created...
|
|
}
|
|
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, const char *desc)
|
|
: StatisticBase(name, desc), Value(DataType()) {}
|
|
|
|
// Constructor to provide an initial value...
|
|
Statistic(const DataType &Val, const char *name, const char *desc)
|
|
: StatisticBase(name, desc), Value(Val) {}
|
|
|
|
// Print information when destroyed, iff command line option is specified
|
|
~Statistic() { destroy(); }
|
|
|
|
// Allow use of this class as the value itself...
|
|
operator DataType() const { return Value; }
|
|
const Statistic &operator=(DataType Val) { Value = Val; return *this; }
|
|
const Statistic &operator++() { ++Value; return *this; }
|
|
DataType operator++(int) { return Value++; }
|
|
const Statistic &operator--() { --Value; return *this; }
|
|
DataType operator--(int) { return Value--; }
|
|
const Statistic &operator+=(const DataType &V) { Value += V; return *this; }
|
|
const Statistic &operator-=(const DataType &V) { Value -= V; return *this; }
|
|
const Statistic &operator*=(const DataType &V) { Value *= V; return *this; }
|
|
const Statistic &operator/=(const DataType &V) { Value /= V; return *this; }
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|