HexagonMachineScheduler.cpp File Reference

#include "HexagonMachineScheduler.h"
#include "HexagonInstrInfo.h"
#include "HexagonSubtarget.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/DFAPacketizer.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/RegisterClassInfo.h"
#include "llvm/CodeGen/RegisterPressure.h"
#include "llvm/CodeGen/ScheduleDAG.h"
#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSchedule.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <iomanip>
#include <limits>
#include <memory>
#include <sstream>

Include dependency graph for HexagonMachineScheduler.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "machine-scheduler"

Functions
static bool	hasDependence (const SUnit *SUd, const SUnit *SUu, const HexagonInstrInfo &QII)
	Return true if there is a dependence between SUd and SUu. More...
static bool	isSingleUnscheduledPred (SUnit *SU, SUnit *SU2)
	isSingleUnscheduledPred - If SU2 is the only unscheduled predecessor of SU, return true (we may have duplicates) More...
static bool	isSingleUnscheduledSucc (SUnit *SU, SUnit *SU2)
	isSingleUnscheduledSucc - If SU2 is the only unscheduled successor of SU, return true (we may have duplicates) More...

Variables
static cl::opt< bool >	IgnoreBBRegPressure ("ignore-bb-reg-pressure", cl::Hidden, cl::ZeroOrMore, cl::init(false))
static cl::opt< bool >	UseNewerCandidate ("use-newer-candidate", cl::Hidden, cl::ZeroOrMore, cl::init(true))
static cl::opt< unsigned >	SchedDebugVerboseLevel ("misched-verbose-level", cl::Hidden, cl::ZeroOrMore, cl::init(1))
static cl::opt< bool >	CheckEarlyAvail ("check-early-avail", cl::Hidden, cl::ZeroOrMore, cl::init(true))
static cl::opt< float >	RPThreshold ("hexagon-reg-pressure", cl::Hidden, cl::init(0.75f), cl::desc("High register pressure threhold."))
static const unsigned	PriorityOne = 200
static const unsigned	PriorityTwo = 50
static const unsigned	PriorityThree = 75
static const unsigned	ScaleTwo = 10

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "machine-scheduler"

Definition at line 46 of file HexagonMachineScheduler.cpp.

Function Documentation

hasDependence()

static bool hasDependence ( const SUnit *  SUd, const SUnit *  SUu, const HexagonInstrInfo &  QII  )

static

Return true if there is a dependence between SUd and SUu.

Definition at line 69 of file HexagonMachineScheduler.cpp.

References llvm::HexagonInstrInfo::canExecuteInBundle(), llvm::SUnit::getInstr(), llvm::HexagonInstrInfo::mayBeCurLoad(), and llvm::SUnit::Succs.

Referenced by llvm::VLIWResourceModel::isResourceAvailable().

isSingleUnscheduledPred()

static bool isSingleUnscheduledPred ( SUnit *  SU, SUnit *  SU2  )

inlinestatic

isSingleUnscheduledPred - If SU2 is the only unscheduled predecessor of SU, return true (we may have duplicates)

Definition at line 520 of file HexagonMachineScheduler.cpp.

References llvm::SUnit::NumPredsLeft, and llvm::SUnit::Preds.

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

isSingleUnscheduledSucc()

static bool isSingleUnscheduledSucc ( SUnit *  SU, SUnit *  SU2  )

inlinestatic

isSingleUnscheduledSucc - If SU2 is the only unscheduled successor of SU, return true (we may have duplicates)

Definition at line 535 of file HexagonMachineScheduler.cpp.

References llvm::SUnit::NumSuccsLeft, and llvm::SUnit::Succs.

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

Variable Documentation

CheckEarlyAvail

cl::opt<bool> CheckEarlyAvail("check-early-avail", cl::Hidden, cl::ZeroOrMore, cl::init(true))

static

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

IgnoreBBRegPressure

cl::opt<bool> IgnoreBBRegPressure("ignore-bb-reg-pressure", cl::Hidden, cl::ZeroOrMore, cl::init(false))

static

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

PriorityOne

const unsigned PriorityOne = 200

static

Definition at line 568 of file HexagonMachineScheduler.cpp.

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

PriorityThree

const unsigned PriorityThree = 75

static

Definition at line 570 of file HexagonMachineScheduler.cpp.

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

PriorityTwo

const unsigned PriorityTwo = 50

static

Definition at line 569 of file HexagonMachineScheduler.cpp.

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

RPThreshold

cl::opt<float> RPThreshold("hexagon-reg-pressure", cl::Hidden, cl::init(0.75f), cl::desc("High register pressure threhold."))

static

Referenced by llvm::ConvergingVLIWScheduler::initialize().

ScaleTwo

const unsigned ScaleTwo = 10

static

Definition at line 571 of file HexagonMachineScheduler.cpp.

Referenced by llvm::ConvergingVLIWScheduler::SchedulingCost().

SchedDebugVerboseLevel

cl::opt<unsigned> SchedDebugVerboseLevel("misched-verbose-level", cl::Hidden, cl::ZeroOrMore, cl::init(1))

static

Referenced by llvm::ConvergingVLIWScheduler::pickNodeFromQueue().

UseNewerCandidate

cl::opt<bool> UseNewerCandidate("use-newer-candidate", cl::Hidden, cl::ZeroOrMore, cl::init(true))

static

Referenced by llvm::ConvergingVLIWScheduler::pickNodeFromQueue().