PPCInstrInfo.cpp File Reference

#include "PPCInstrInfo.h"
#include "MCTargetDesc/PPCPredicates.h"
#include "PPC.h"
#include "PPCHazardRecognizers.h"
#include "PPCInstrBuilder.h"
#include "PPCMachineFunctionInfo.h"
#include "PPCTargetMachine.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/LiveIntervals.h"
#include "llvm/CodeGen/LivePhysRegs.h"
#include "llvm/CodeGen/MachineCombinerPattern.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/CodeGen/RegisterClassInfo.h"
#include "llvm/CodeGen/RegisterPressure.h"
#include "llvm/CodeGen/ScheduleDAG.h"
#include "llvm/CodeGen/SlotIndexes.h"
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/TargetRegistry.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "PPCGenInstrInfo.inc"
#include "llvm/TargetParser/PPCTargetParser.def"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "ppc-instr-info"
#define	GET_INSTRMAP_INFO
#define	GET_INSTRINFO_CTOR_DTOR
#define	InfoArrayIdxFMAInst   0
#define	InfoArrayIdxFAddInst   1
#define	InfoArrayIdxFMULInst   2
#define	InfoArrayIdxAddOpIdx   3
#define	InfoArrayIdxMULOpIdx   4
#define	InfoArrayIdxFSubInst   5
#define	PPC_LNX_DEFINE_OFFSETS
#define	PPC_TGT_PARSER_UNDEF_MACROS

Functions
	STATISTIC (NumStoreSPILLVSRRCAsVec, "Number of spillvsrrc spilled to stack as vec")
	STATISTIC (NumStoreSPILLVSRRCAsGpr, "Number of spillvsrrc spilled to stack as gpr")
	STATISTIC (NumGPRtoVSRSpill, "Number of gpr spills to spillvsrrc")
	STATISTIC (CmpIselsConverted, "Number of ISELs that depend on comparison of constants converted")
	STATISTIC (MissedConvertibleImmediateInstrs, "Number of compare-immediate instructions fed by constants")
	STATISTIC (NumRcRotatesConvertedToRcAnd, "Number of record-form rotates converted to record-form andi")
static unsigned	getCRBitValue (unsigned CRBit)
static bool	MBBDefinesCTR (MachineBasicBlock &MBB)
static bool	isLdStSafeToCluster (const MachineInstr &LdSt, const TargetRegisterInfo *TRI)
static bool	isClusterableLdStOpcPair (unsigned FirstOpc, unsigned SecondOpc, const PPCSubtarget &Subtarget)
static bool	isAnImmediateOperand (const MachineOperand &MO)
static unsigned	selectReg (int64_t Imm1, int64_t Imm2, unsigned CompareOpc, unsigned TrueReg, unsigned FalseReg, unsigned CRSubReg)
static void	swapMIOperands (MachineInstr &MI, unsigned Op1, unsigned Op2)
static bool	isOpZeroOfSubwordPreincLoad (int Opcode)
static bool	definedBySignExtendingOp (const unsigned Reg, const MachineRegisterInfo *MRI)
static bool	definedByZeroExtendingOp (const unsigned Reg, const MachineRegisterInfo *MRI)

Variables
static cl::opt< bool >	DisableCTRLoopAnal ("disable-ppc-ctrloop-analysis", cl::Hidden, cl::desc("Disable analysis for CTR loops"))
static cl::opt< bool >	DisableCmpOpt ("disable-ppc-cmp-opt", cl::desc("Disable compare instruction optimization"), cl::Hidden)
static cl::opt< bool >	VSXSelfCopyCrash ("crash-on-ppc-vsx-self-copy", cl::desc("Causes the backend to crash instead of generating a nop VSX copy"), cl::Hidden)
static cl::opt< bool >	UseOldLatencyCalc ("ppc-old-latency-calc", cl::Hidden, cl::desc("Use the old (incorrect) instruction latency calculation"))
static cl::opt< float >	FMARPFactor ("ppc-fma-rp-factor", cl::Hidden, cl::init(1.5), cl::desc("register pressure factor for the transformations."))
static cl::opt< bool >	EnableFMARegPressureReduction ("ppc-fma-rp-reduction", cl::Hidden, cl::init(true), cl::desc("enable register pressure reduce in machine combiner pass."))
static const uint16_t	FMAOpIdxInfo [][6]
const unsigned	MAX_BINOP_DEPTH = 1

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "ppc-instr-info"

Definition at line 46 of file PPCInstrInfo.cpp.

GET_INSTRINFO_CTOR_DTOR

#define GET_INSTRINFO_CTOR_DTOR

Definition at line 49 of file PPCInstrInfo.cpp.

GET_INSTRMAP_INFO

#define GET_INSTRMAP_INFO

Definition at line 48 of file PPCInstrInfo.cpp.

InfoArrayIdxAddOpIdx

#define InfoArrayIdxAddOpIdx   3

Definition at line 272 of file PPCInstrInfo.cpp.

InfoArrayIdxFAddInst

#define InfoArrayIdxFAddInst   1

Definition at line 270 of file PPCInstrInfo.cpp.

InfoArrayIdxFMAInst

#define InfoArrayIdxFMAInst   0

Definition at line 269 of file PPCInstrInfo.cpp.

InfoArrayIdxFMULInst

#define InfoArrayIdxFMULInst   2

Definition at line 271 of file PPCInstrInfo.cpp.

InfoArrayIdxFSubInst

#define InfoArrayIdxFSubInst   5

Definition at line 274 of file PPCInstrInfo.cpp.

InfoArrayIdxMULOpIdx

#define InfoArrayIdxMULOpIdx   4

Definition at line 273 of file PPCInstrInfo.cpp.

PPC_LNX_DEFINE_OFFSETS

#define PPC_LNX_DEFINE_OFFSETS

PPC_TGT_PARSER_UNDEF_MACROS

#define PPC_TGT_PARSER_UNDEF_MACROS

Function Documentation

definedBySignExtendingOp()

static bool definedBySignExtendingOp ( const unsigned  Reg, const MachineRegisterInfo *  MRI  )

static

Definition at line 5133 of file PPCInstrInfo.cpp.

References isOpZeroOfSubwordPreincLoad(), llvm::Register::isVirtualRegister(), MI, MRI, and TII.

Referenced by llvm::PPCInstrInfo::isSignOrZeroExtended().

definedByZeroExtendingOp()

static bool definedByZeroExtendingOp ( const unsigned  Reg, const MachineRegisterInfo *  MRI  )

static

Definition at line 5180 of file PPCInstrInfo.cpp.

References isOpZeroOfSubwordPreincLoad(), llvm::Register::isVirtualRegister(), MI, MRI, and TII.

Referenced by llvm::PPCInstrInfo::isSignOrZeroExtended().

getCRBitValue()

static unsigned getCRBitValue ( unsigned  CRBit )

static

Definition at line 1649 of file PPCInstrInfo.cpp.

References assert().

Referenced by llvm::PPCInstrInfo::copyPhysReg().

isAnImmediateOperand()

static bool isAnImmediateOperand ( const MachineOperand &  MO )

static

Definition at line 3073 of file PPCInstrInfo.cpp.

References llvm::MachineOperand::isCPI(), llvm::MachineOperand::isGlobal(), and llvm::MachineOperand::isImm().

Referenced by llvm::PPCInstrInfo::expandPostRAPseudo().

isClusterableLdStOpcPair()

static bool isClusterableLdStOpcPair ( unsigned  FirstOpc, unsigned  SecondOpc, const PPCSubtarget &  Subtarget  )

static

Definition at line 2868 of file PPCInstrInfo.cpp.

Referenced by llvm::PPCInstrInfo::shouldClusterMemOps().

isLdStSafeToCluster()

static bool isLdStSafeToCluster ( const MachineInstr &  LdSt, const TargetRegisterInfo *  TRI  )

static

Definition at line 2848 of file PPCInstrInfo.cpp.

References assert(), llvm::MachineInstr::getNumExplicitOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineInstr::hasOrderedMemoryRef(), llvm::MachineOperand::isFI(), llvm::MachineOperand::isReg(), llvm::MachineInstr::modifiesRegister(), and TRI.

Referenced by llvm::PPCInstrInfo::shouldClusterMemOps().

isOpZeroOfSubwordPreincLoad()

static bool isOpZeroOfSubwordPreincLoad ( int  Opcode )

static

Definition at line 5125 of file PPCInstrInfo.cpp.

Referenced by definedBySignExtendingOp(), and definedByZeroExtendingOp().

MBBDefinesCTR()

static bool MBBDefinesCTR ( MachineBasicBlock &  MBB )

static

Definition at line 2125 of file PPCInstrInfo.cpp.

References MBB, and MI.

Referenced by llvm::PPCInstrInfo::isProfitableToIfCvt().

selectReg()

static unsigned selectReg ( int64_t  Imm1, int64_t  Imm2, unsigned  CompareOpc, unsigned  TrueReg, unsigned  FalseReg, unsigned  CRSubReg  )

static

Definition at line 3259 of file PPCInstrInfo.cpp.

References llvm_unreachable.

STATISTIC() [1/6]

STATISTIC	(	CmpIselsConverted	,
		"Number of ISELs that depend on comparison of constants converted"
	)

STATISTIC() [2/6]

STATISTIC	(	MissedConvertibleImmediateInstrs	,
		"Number of compare-immediate instructions fed by constants"
	)

STATISTIC() [3/6]

STATISTIC	(	NumGPRtoVSRSpill	,
		"Number of gpr spills to spillvsrrc"
	)

STATISTIC() [4/6]

STATISTIC	(	NumRcRotatesConvertedToRcAnd	,
		"Number of record-form rotates converted to record-form andi"
	)

STATISTIC() [5/6]

STATISTIC	(	NumStoreSPILLVSRRCAsGpr	,
		"Number of spillvsrrc spilled to stack as gpr"
	)

STATISTIC() [6/6]

STATISTIC	(	NumStoreSPILLVSRRCAsVec	,
		"Number of spillvsrrc spilled to stack as vec"
	)

swapMIOperands()

static void swapMIOperands ( MachineInstr &  MI, unsigned  Op1, unsigned  Op2  )

static

Definition at line 4362 of file PPCInstrInfo.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), MI, llvm::SmallVectorTemplateBase< T, bool >::pop_back(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Variable Documentation

DisableCmpOpt

cl::opt< bool > DisableCmpOpt("disable-ppc-cmp-opt", cl::desc("Disable compare instruction optimization"), cl::Hidden) ( "disable-ppc-cmp-opt"  , cl::desc("Disable compare instruction optimization")  , cl::Hidden    )

static

Referenced by llvm::PPCInstrInfo::optimizeCompareInstr().

DisableCTRLoopAnal

cl::opt< bool > DisableCTRLoopAnal("disable-ppc-ctrloop-analysis", cl::Hidden, cl::desc("Disable analysis for CTR loops")) ( "disable-ppc-ctrloop-analysis"  , cl::Hidden  , cl::desc("Disable analysis for CTR loops")    )

static

Referenced by llvm::PPCInstrInfo::analyzeBranch().

EnableFMARegPressureReduction

cl::opt< bool > EnableFMARegPressureReduction("ppc-fma-rp-reduction", cl::Hidden, cl::init(true), cl::desc("enable register pressure reduce in machine combiner pass.")) ( "ppc-fma-rp-reduction"  , cl::Hidden  , cl::init(true)  , cl::desc("enable register pressure reduce in machine combiner pass.")    )

static

Referenced by llvm::PPCInstrInfo::shouldReduceRegisterPressure().

FMAOpIdxInfo

const uint16_t FMAOpIdxInfo[][6]

static

Initial value:

= {
    
    {PPC::XSMADDADP, PPC::XSADDDP, PPC::XSMULDP, 1, 2, PPC::XSSUBDP},
    {PPC::XSMADDASP, PPC::XSADDSP, PPC::XSMULSP, 1, 2, PPC::XSSUBSP},
    {PPC::XVMADDADP, PPC::XVADDDP, PPC::XVMULDP, 1, 2, PPC::XVSUBDP},
    {PPC::XVMADDASP, PPC::XVADDSP, PPC::XVMULSP, 1, 2, PPC::XVSUBSP},
    {PPC::FMADD, PPC::FADD, PPC::FMUL, 3, 1, PPC::FSUB},
    {PPC::FMADDS, PPC::FADDS, PPC::FMULS, 3, 1, PPC::FSUBS}}

Definition at line 283 of file PPCInstrInfo.cpp.

Referenced by llvm::PPCInstrInfo::finalizeInsInstrs(), and llvm::PPCInstrInfo::getFMAPatterns().

FMARPFactor

cl::opt< float > FMARPFactor("ppc-fma-rp-factor", cl::Hidden, cl::init(1.5), cl::desc("register pressure factor for the transformations.")) ( "ppc-fma-rp-factor"  , cl::Hidden  , cl::init(1.5)  , cl::desc("register pressure factor for the transformations.")    )

static

Referenced by llvm::PPCInstrInfo::shouldReduceRegisterPressure().

MAX_BINOP_DEPTH

const unsigned MAX_BINOP_DEPTH = 1

Definition at line 5249 of file PPCInstrInfo.cpp.

Referenced by llvm::PPCInstrInfo::isSignOrZeroExtended(), and llvm::PPCInstrInfo::promoteInstr32To64ForElimEXTSW().

UseOldLatencyCalc

cl::opt< bool > UseOldLatencyCalc("ppc-old-latency-calc", cl::Hidden, cl::desc("Use the old (incorrect) instruction latency calculation")) ( "ppc-old-latency-calc"  , cl::Hidden  , cl::desc("Use the old (incorrect) instruction latency calculation")    )

static

Referenced by llvm::PPCInstrInfo::getInstrLatency().

VSXSelfCopyCrash

cl::opt< bool > VSXSelfCopyCrash("crash-on-ppc-vsx-self-copy", cl::desc("Causes the backend to crash instead of generating a nop VSX copy"), cl::Hidden) ( "crash-on-ppc-vsx-self-copy"  , cl::desc("Causes the backend to crash instead of generating a nop VSX copy")  , cl::Hidden    )

static

Referenced by llvm::PPCInstrInfo::copyPhysReg().