ScheduleDAGFast.cpp File Reference

#include "InstrEmitter.h"
#include "SDNodeDbgValue.h"
#include "ScheduleDAGSDNodes.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "pre-RA-sched"

Functions
	STATISTIC (NumUnfolds, "Number of nodes unfolded")
	STATISTIC (NumDups, "Number of duplicated nodes")
	STATISTIC (NumPRCopies, "Number of physical copies")
static MVT	getPhysicalRegisterVT (SDNode *N, unsigned Reg, const TargetInstrInfo *TII)
	getPhysicalRegisterVT - Returns the ValueType of the physical register definition of the specified node.
static bool	CheckForLiveRegDef (SUnit *SU, unsigned Reg, std::vector< SUnit * > &LiveRegDefs, SmallSet< unsigned, 4 > &RegAdded, SmallVectorImpl< unsigned > &LRegs, const TargetRegisterInfo *TRI, const SDNode *Node=nullptr)
	CheckForLiveRegDef - Return true and update live register vector if the specified register def of the specified SUnit clobbers any "live" registers.
static SDNode *	findGluedUser (SDNode *N)
	findGluedUser - Find the representative use of a glue value by walking the use chain.

Variables
static RegisterScheduler	fastDAGScheduler ("fast", "Fast suboptimal list scheduling", createFastDAGScheduler)
static RegisterScheduler	linearizeDAGScheduler ("linearize", "Linearize DAG, no scheduling", createDAGLinearizer)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "pre-RA-sched"

Definition at line 28 of file ScheduleDAGFast.cpp.

Function Documentation

CheckForLiveRegDef()

static bool CheckForLiveRegDef ( SUnit *  SU, unsigned  Reg, std::vector< SUnit * > &  LiveRegDefs, SmallSet< unsigned, 4 > &  RegAdded, SmallVectorImpl< unsigned > &  LRegs, const TargetRegisterInfo *  TRI, const SDNode *  Node = nullptr  )

static

CheckForLiveRegDef - Return true and update live register vector if the specified register def of the specified SUnit clobbers any "live" registers.

Definition at line 439 of file ScheduleDAGFast.cpp.

References llvm::SmallSet< T, N, C >::insert(), llvm::MCRegAliasIterator::isValid(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and TRI.

findGluedUser()

static SDNode * findGluedUser ( SDNode *  N )

static

findGluedUser - Find the representative use of a glue value by walking the use chain.

Definition at line 719 of file ScheduleDAGFast.cpp.

References N.

getPhysicalRegisterVT()

static MVT getPhysicalRegisterVT ( SDNode *  N, unsigned  Reg, const TargetInstrInfo *  TII  )

static

getPhysicalRegisterVT - Returns the ValueType of the physical register definition of the specified node.

FIXME: Move to SelectionDAG?

Definition at line 417 of file ScheduleDAGFast.cpp.

References assert(), llvm::ISD::CopyFromReg, llvm::MCInstrDesc::getNumDefs(), llvm::MCInstrDesc::implicit_defs(), N, and TII.

STATISTIC() [1/3]

STATISTIC	(	NumDups	,
		"Number of duplicated nodes"
	)

STATISTIC() [2/3]

STATISTIC	(	NumPRCopies	,
		"Number of physical copies"
	)

STATISTIC() [3/3]

STATISTIC	(	NumUnfolds	,
		"Number of nodes unfolded"
	)

Variable Documentation

fastDAGScheduler

RegisterScheduler fastDAGScheduler("fast", "Fast suboptimal list scheduling", createFastDAGScheduler) ( "fast"  , "Fast suboptimal list scheduling"  , createFastDAGScheduler    )

static

linearizeDAGScheduler

RegisterScheduler linearizeDAGScheduler("linearize", "Linearize DAG, no scheduling", createDAGLinearizer) ( "linearize"  , "Linearize  DAG, no scheduling"  , createDAGLinearizer    )

static