MachineBlockPlacement.cpp File Reference

#include "llvm/CodeGen/Passes.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
#include "llvm/CodeGen/MachineBranchProbabilityInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include <algorithm>

Include dependency graph for MachineBlockPlacement.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "block-placement2"
Functions
	STATISTIC (NumCondBranches,"Number of conditional branches")
	STATISTIC (NumUncondBranches,"Number of uncondittional branches")
	STATISTIC (CondBranchTakenFreq,"Potential frequency of taking conditional branches")
	STATISTIC (UncondBranchTakenFreq,"Potential frequency of taking unconditional branches")
	INITIALIZE_PASS_BEGIN (MachineBlockPlacement,"block-placement2","Branch Probability Basic Block Placement", false, false) INITIALIZE_PASS_END(MachineBlockPlacement
block Branch Probability Basic Block static false std::string	getBlockName (MachineBasicBlock *BB)
	Helper to print the name of a MBB.
static std::string	getBlockNum (MachineBasicBlock *BB)
	Helper to print the number of a MBB.
	INITIALIZE_PASS_BEGIN (MachineBlockPlacementStats,"block-placement-stats","Basic Block Placement Stats", false, false) INITIALIZE_PASS_END(MachineBlockPlacementStats
Variables
static cl::opt< unsigned >	AlignAllBlock ("align-all-blocks", cl::desc("Force the alignment of all ""blocks in the function."), cl::init(0), cl::Hidden)
static cl::opt< unsigned >	ExitBlockBias ("block-placement-exit-block-bias", cl::desc("Block frequency percentage a loop exit block needs ""over the original exit to be considered the new exit."), cl::init(0), cl::Hidden)
block	placement2
block Branch Probability Basic Block	Placement
block Branch Probability Basic Block	false
block placement	stats
block placement Basic Block Placement	Stats

---

Define Documentation

#define DEBUG_TYPE   "block-placement2"

Definition at line 49 of file MachineBlockPlacement.cpp.

---

Function Documentation

block Branch Probability Basic Block static false std::string getBlockName

(

MachineBasicBlock *

BB

)

[static]

Helper to print the name of a MBB.

Only used by debug logging.

Definition at line 267 of file MachineBlockPlacement.cpp.

References llvm::raw_ostream::flush(), llvm::MachineBasicBlock::getName(), and llvm::MachineBasicBlock::getNumber().

Referenced by llvm::BlockFrequencyInfoImplBase::addToDist(), llvm::BlockFrequencyInfoImplBase::distributeMass(), llvm::BlockFrequencyInfoImplBase::getLoopName(), and llvm::BlockFrequencyInfoImplBase::packageLoop().

static std::string getBlockNum

(

MachineBasicBlock *

BB

)

[static]

Helper to print the number of a MBB.

Only used by debug logging.

Definition at line 279 of file MachineBlockPlacement.cpp.

References llvm::raw_ostream::flush(), and llvm::MachineBasicBlock::getNumber().

Referenced by llvm::MachineTraceMetrics::Trace::getInstrSlack(), llvm::MachineTraceMetrics::Trace::getPHIDepth(), llvm::MachineTraceMetrics::Trace::getResourceDepth(), and llvm::MachineTraceMetrics::Trace::getResourceLength().

INITIALIZE_PASS_BEGIN	(	MachineBlockPlacement	,
		"block-placement2"	,
		"Branch Probability Basic Block Placement"	,
		false	,
		false
	)

INITIALIZE_PASS_BEGIN	(	MachineBlockPlacementStats	,
		"block-placement-stats"	,
		"Basic Block Placement Stats"	,
		false	,
		false
	)

STATISTIC	(	NumCondBranches	,
		"Number of conditional branches"
	)

STATISTIC	(	NumUncondBranches	,
		"Number of uncondittional branches"
	)

STATISTIC	(	CondBranchTakenFreq	,
		"Potential frequency of taking conditional branches"
	)

STATISTIC	(	UncondBranchTakenFreq	,
		"Potential frequency of taking unconditional branches"
	)

---

Variable Documentation

cl::opt<unsigned> AlignAllBlock("align-all-blocks", cl::desc("Force the alignment of all ""blocks in the function."), cl::init(0), cl::Hidden) [static]

cl::opt<unsigned> ExitBlockBias("block-placement-exit-block-bias", cl::desc("Block frequency percentage a loop exit block needs ""over the original exit to be considered the new exit."), cl::init(0), cl::Hidden) [static]

block placement Basic Block Placement false

Definition at line 260 of file MachineBlockPlacement.cpp.

block Branch Probability Basic Block Placement

Definition at line 260 of file MachineBlockPlacement.cpp.

block placement2

Definition at line 260 of file MachineBlockPlacement.cpp.

block placement stats

Definition at line 1172 of file MachineBlockPlacement.cpp.

block placement Basic Block Placement Stats

Definition at line 1172 of file MachineBlockPlacement.cpp.

Referenced by llvm::PrintStatistics().