BlockFrequencyInfo.cpp File Reference

#include "llvm/Analysis/BlockFrequencyInfo.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/None.h"
#include "llvm/ADT/iterator.h"
#include "llvm/Analysis/BlockFrequencyInfoImpl.h"
#include "llvm/Analysis/BranchProbabilityInfo.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <string>

Include dependency graph for BlockFrequencyInfo.cpp:

Go to the source code of this file.

Classes
struct	llvm::GraphTraits< BlockFrequencyInfo * >
struct	llvm::DOTGraphTraits< BlockFrequencyInfo * >

Namespaces
	llvm
	This class represents lattice values for constants.

Macros
#define	DEBUG_TYPE   "block-freq"

Typedefs
using	llvm::BFIDOTGTraitsBase = BFIDOTGraphTraitsBase< BlockFrequencyInfo, BranchProbabilityInfo >

Functions
static GVDAGType	llvm::getGVDT ()
	INITIALIZE_PASS_BEGIN (BlockFrequencyInfoWrapperPass, "block-freq", "Block Frequency Analysis", true, true) INITIALIZE_PASS_END(BlockFrequencyInfoWrapperPass

Variables
static cl::opt< GVDAGType >	ViewBlockFreqPropagationDAG ("view-block-freq-propagation-dags", cl::Hidden, cl::desc("Pop up a window to show a dag displaying how block " "frequencies propagation through the CFG."), cl::values(clEnumValN(GVDT_None, "none", "do not display graphs."), clEnumValN(GVDT_Fraction, "fraction", "display a graph using the " "fractional block frequency representation."), clEnumValN(GVDT_Integer, "integer", "display a graph using the raw " "integer fractional block frequency representation."), clEnumValN(GVDT_Count, "count", "display a graph using the real " "profile count if available.")))
cl::opt< std::string >	ViewBlockFreqFuncName ("view-bfi-func-name", cl::Hidden, cl::desc("The option to specify " "the name of the function " "whose CFG will be displayed."))
cl::opt< unsigned >	ViewHotFreqPercent ("view-hot-freq-percent", cl::init(10), cl::Hidden, cl::desc("An integer in percent used to specify " "the hot blocks/edges to be displayed " "in red: a block or edge whose frequency " "is no less than the max frequency of the " "function multiplied by this percent."))
cl::opt< PGOViewCountsType >	PGOViewCounts ("pgo-view-counts", cl::Hidden, cl::desc("A boolean option to show CFG dag or text with " "block profile counts and branch probabilities " "right after PGO profile annotation step. The " "profile counts are computed using branch " "probabilities from the runtime profile data and " "block frequency propagation algorithm. To view " "the raw counts from the profile, use option " "-pgo-view-raw-counts instead. To limit graph " "display to only one function, use filtering option " "-view-bfi-func-name."), cl::values(clEnumValN(PGOVCT_None, "none", "do not show."), clEnumValN(PGOVCT_Graph, "graph", "show a graph."), clEnumValN(PGOVCT_Text, "text", "show in text.")))
static cl::opt< bool >	PrintBlockFreq ("print-bfi", cl::init(false), cl::Hidden, cl::desc("Print the block frequency info."))
cl::opt< std::string >	PrintBlockFreqFuncName ("print-bfi-func-name", cl::Hidden, cl::desc("The option to specify the name of the function " "whose block frequency info is printed."))
block	freq
block Block Frequency	Analysis
block Block Frequency	true

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "block-freq"

Definition at line 34 of file BlockFrequencyInfo.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	BlockFrequencyInfoWrapperPass	,
		"block-freq"	,
		"Block Frequency Analysis"	,
		true	,
		true
	)

Referenced by llvm::BlockFrequencyInfo::print().

Variable Documentation

Analysis

block Block Frequency Analysis

Definition at line 293 of file BlockFrequencyInfo.cpp.

Referenced by llvm::DOTGraphTraitsViewer< AnalysisT, IsSimple, GraphT, AnalysisGraphTraitsT >::runOnFunction(), and llvm::DOTGraphTraitsPrinter< AnalysisT, IsSimple, GraphT, AnalysisGraphTraitsT >::runOnFunction().

freq

block freq

Definition at line 293 of file BlockFrequencyInfo.cpp.

Referenced by llvm::SpillPlacement::Node::addBias().

PGOViewCounts

cl::opt<PGOViewCountsType> PGOViewCounts("pgo-view-counts", cl::Hidden, cl::desc("A boolean option to show CFG dag or text with " "block profile counts and branch probabilities " "right after PGO profile annotation step. The " "profile counts are computed using branch " "probabilities from the runtime profile data and " "block frequency propagation algorithm. To view " "the raw counts from the profile, use option " "-pgo-view-raw-counts instead. To limit graph " "display to only one function, use filtering option " "-view-bfi-func-name."), cl::values(clEnumValN(PGOVCT_None, "none", "do not show."), clEnumValN(PGOVCT_Graph, "graph", "show a graph."), clEnumValN(PGOVCT_Text, "text", "show in text.")))

Referenced by annotateAllFunctions(), and llvm::getGVDT().

PrintBlockFreq

cl::opt<bool> PrintBlockFreq("print-bfi", cl::init(false), cl::Hidden, cl::desc("Print the block frequency info."))

static

Referenced by llvm::BlockFrequencyInfo::calculate().

PrintBlockFreqFuncName

cl::opt<std::string> PrintBlockFreqFuncName("print-bfi-func-name", cl::Hidden, cl::desc("The option to specify the name of the function " "whose block frequency info is printed."))

Referenced by llvm::MachineBlockFrequencyInfo::calculate(), and llvm::BlockFrequencyInfo::calculate().

true

dot regions Print regions of function to dot true view regions View regions of true

Definition at line 293 of file BlockFrequencyInfo.cpp.

Referenced by llvm::DWARFUnitHeader::extract(), hasBZHI(), llvm::X86CallLowering::lowerCall(), llvm::ScopedHandle< HandleTraits >::operator bool(), and swapAntiDependences().

ViewBlockFreqFuncName

cl::opt<std::string> ViewBlockFreqFuncName("view-bfi-func-name", cl::Hidden, cl::desc("The option to specify " "the name of the function " "whose CFG will be displayed."))

Referenced by annotateAllFunctions(), and llvm::BlockFrequencyInfo::calculate().

ViewBlockFreqPropagationDAG

cl::opt<GVDAGType> ViewBlockFreqPropagationDAG("view-block-freq-propagation-dags", cl::Hidden, cl::desc("Pop up a window to show a dag displaying how block " "frequencies propagation through the CFG."), cl::values(clEnumValN(GVDT_None, "none", "do not display graphs."), clEnumValN(GVDT_Fraction, "fraction", "display a graph using the " "fractional block frequency representation."), clEnumValN(GVDT_Integer, "integer", "display a graph using the raw " "integer fractional block frequency representation."), clEnumValN(GVDT_Count, "count", "display a graph using the real " "profile count if available.")))

static

Referenced by llvm::BlockFrequencyInfo::calculate(), and llvm::getGVDT().

ViewHotFreqPercent

cl::opt<unsigned> ViewHotFreqPercent("view-hot-freq-percent", cl::init(10), cl::Hidden, cl::desc("An integer in percent used to specify " "the hot blocks/edges to be displayed " "in red: a block or edge whose frequency " "is no less than the max frequency of the " "function multiplied by this percent."))