Statistic.h File Reference

This file defines the 'Statistic' class, which is designed to be an easy way to expose various metrics from passes. More...

#include "llvm/Config/llvm-config.h"
#include "llvm/Support/Compiler.h"
#include <atomic>
#include <memory>
#include <vector>

Go to the source code of this file.

Classes
class	llvm::TrackingStatistic
class	llvm::NoopStatistic

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	LLVM_ENABLE_STATS   1
#define	STATISTIC(VARNAME, DESC)    static llvm::Statistic VARNAME = {DEBUG_TYPE, #VARNAME, DESC}
#define	ALWAYS_ENABLED_STATISTIC(VARNAME, DESC)    static llvm::TrackingStatistic VARNAME = {DEBUG_TYPE, #VARNAME, DESC}

Typedefs
using	llvm::Statistic = NoopStatistic

Functions
void	llvm::EnableStatistics (bool DoPrintOnExit=true)
	Enable the collection and printing of statistics.
bool	llvm::AreStatisticsEnabled ()
	Check if statistics are enabled.
std::unique_ptr< raw_fd_ostream >	llvm::CreateInfoOutputFile ()
	Return a file stream to print our output on.
void	llvm::PrintStatistics ()
	Print statistics to the file returned by CreateInfoOutputFile().
void	llvm::PrintStatistics (raw_ostream &OS)
	Print statistics to the given output stream.
void	llvm::PrintStatisticsJSON (raw_ostream &OS)
	Print statistics in JSON format.
std::vector< std::pair< StringRef, uint64_t > >	llvm::GetStatistics ()
	Get the statistics.
void	llvm::ResetStatistics ()
	Reset the statistics.

Detailed Description

This file defines the 'Statistic' class, which is designed to be an easy way to expose various metrics from passes.

These statistics are printed at the end of a run (from llvm_shutdown), when the -stats command line option is passed 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;

NOTE: Statistics must be declared as global variables.

Definition in file Statistic.h.

Macro Definition Documentation

ALWAYS_ENABLED_STATISTIC

#define ALWAYS_ENABLED_STATISTIC	(		VARNAME,
			DESC
	)		static llvm::TrackingStatistic VARNAME = {DEBUG_TYPE, #VARNAME, DESC}

Definition at line 172 of file Statistic.h.

LLVM_ENABLE_STATS

#define LLVM_ENABLE_STATS   1

Definition at line 39 of file Statistic.h.

STATISTIC

#define STATISTIC	(		VARNAME,
			DESC
	)		static llvm::Statistic VARNAME = {DEBUG_TYPE, #VARNAME, DESC}

Definition at line 167 of file Statistic.h.