PPCRegisterInfo.cpp File Reference

#include "PPCRegisterInfo.h"
#include "PPCFrameLowering.h"
#include "PPCInstrBuilder.h"
#include "PPCMachineFunctionInfo.h"
#include "PPCSubtarget.h"
#include "PPCTargetMachine.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/VirtRegMap.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include <cstdlib>
#include "PPCGenRegisterInfo.inc"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "reginfo"
#define	GET_REGINFO_TARGET_DESC

Functions
	STATISTIC (InflateGPRC, "Number of gprc inputs for getLargestLegalClass")
	STATISTIC (InflateGP8RC, "Number of g8rc inputs for getLargestLegalClass")
static unsigned	offsetMinAlignForOpcode (unsigned OpC)
static void	emitAccSpillRestoreInfo (MachineBasicBlock &MBB, bool IsPrimed, bool IsRestore)
static void	spillRegPairs (MachineBasicBlock &MBB, MachineBasicBlock::iterator II, DebugLoc DL, const TargetInstrInfo &TII, Register SrcReg, unsigned FrameIndex, bool IsLittleEndian, bool IsKilled, bool TwoPairs)
static void	emitWAccSpillRestoreInfo (MachineBasicBlock &MBB, bool IsRestore)
static unsigned	offsetMinAlign (const MachineInstr &MI)
static unsigned	getOffsetONFromFION (const MachineInstr &MI, unsigned FIOperandNum)

Variables
static cl::opt< bool >	EnableBasePointer ("ppc-use-base-pointer", cl::Hidden, cl::init(true), cl::desc("Enable use of a base pointer for complex stack frames"))
static cl::opt< bool >	AlwaysBasePointer ("ppc-always-use-base-pointer", cl::Hidden, cl::init(false), cl::desc("Force the use of a base pointer in every function"))
static cl::opt< bool >	EnableGPRToVecSpills ("ppc-enable-gpr-to-vsr-spills", cl::Hidden, cl::init(false), cl::desc("Enable spills from gpr to vsr rather than stack"))
static cl::opt< bool >	StackPtrConst ("ppc-stack-ptr-caller-preserved", cl::desc("Consider R1 caller preserved so stack saves of " "caller preserved registers can be LICM candidates"), cl::init(true), cl::Hidden)
static cl::opt< unsigned >	MaxCRBitSpillDist ("ppc-max-crbit-spill-dist", cl::desc("Maximum search distance for definition of CR bit " "spill on ppc"), cl::Hidden, cl::init(100))
static cl::opt< bool >	ReportAccMoves ("ppc-report-acc-moves", cl::desc("Emit information about accumulator register spills " "and copies"), cl::Hidden, cl::init(false))
cl::opt< bool >	DisableAutoPairedVecSt

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "reginfo"

Definition at line 47 of file PPCRegisterInfo.cpp.

GET_REGINFO_TARGET_DESC

#define GET_REGINFO_TARGET_DESC

Definition at line 49 of file PPCRegisterInfo.cpp.

Function Documentation

emitAccSpillRestoreInfo()

static void emitAccSpillRestoreInfo ( MachineBasicBlock &  MBB, bool  IsPrimed, bool  IsRestore  )

static

Definition at line 1225 of file PPCRegisterInfo.cpp.

References llvm::dbgs(), llvm::MachineBasicBlock::dump(), MBB, and ReportAccMoves.

Referenced by llvm::PPCRegisterInfo::lowerACCRestore(), and llvm::PPCRegisterInfo::lowerACCSpilling().

emitWAccSpillRestoreInfo()

static void emitWAccSpillRestoreInfo ( MachineBasicBlock &  MBB, bool  IsRestore  )

static

Definition at line 1296 of file PPCRegisterInfo.cpp.

References llvm::dbgs(), llvm::MachineBasicBlock::dump(), MBB, and ReportAccMoves.

Referenced by llvm::PPCRegisterInfo::lowerWACCRestore(), and llvm::PPCRegisterInfo::lowerWACCSpilling().

getOffsetONFromFION()

static unsigned getOffsetONFromFION ( const MachineInstr &  MI, unsigned  FIOperandNum  )

static

Definition at line 1566 of file PPCRegisterInfo.cpp.

References MI.

Referenced by llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::isFrameOffsetLegal(), and llvm::PPCRegisterInfo::resolveFrameIndex().

offsetMinAlign()

static unsigned offsetMinAlign ( const MachineInstr &  MI )

static

Definition at line 1560 of file PPCRegisterInfo.cpp.

References MI, and offsetMinAlignForOpcode().

Referenced by llvm::PPCRegisterInfo::eliminateFrameIndex(), and llvm::PPCRegisterInfo::isFrameOffsetLegal().

offsetMinAlignForOpcode()

static unsigned offsetMinAlignForOpcode ( unsigned  OpC )

static

Definition at line 1527 of file PPCRegisterInfo.cpp.

Referenced by offsetMinAlign(), and llvm::PPCRegisterInfo::requiresFrameIndexScavenging().

spillRegPairs()

static void spillRegPairs ( MachineBasicBlock &  MBB, MachineBasicBlock::iterator  II, DebugLoc  DL, const TargetInstrInfo &  TII, Register  SrcReg, unsigned  FrameIndex, bool  IsLittleEndian, bool  IsKilled, bool  TwoPairs  )

static

Definition at line 1238 of file PPCRegisterInfo.cpp.

References llvm::addFrameReference(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), DL, llvm::getKillRegState(), II, llvm::Register::isVirtual(), MBB, llvm::Offset, and TII.

Referenced by llvm::PPCRegisterInfo::lowerACCSpilling(), and llvm::PPCRegisterInfo::lowerOctWordSpilling().

STATISTIC() [1/2]

STATISTIC	(	InflateGP8RC	,
		"Number of g8rc inputs for getLargestLegalClass"
	)

STATISTIC() [2/2]

STATISTIC	(	InflateGPRC	,
		"Number of gprc inputs for getLargestLegalClass"
	)

Variable Documentation

AlwaysBasePointer

cl::opt< bool > AlwaysBasePointer("ppc-always-use-base-pointer", cl::Hidden, cl::init(false), cl::desc("Force the use of a base pointer in every function")) ( "ppc-always-use-base-pointer"  , cl::Hidden  , cl::init(false)  , cl::desc("Force the use of a base pointer in every function")    )

static

Referenced by llvm::PPCRegisterInfo::hasBasePointer().

DisableAutoPairedVecSt

cl::opt<bool> DisableAutoPairedVecSt

extern

EnableBasePointer

cl::opt< bool > EnableBasePointer("ppc-use-base-pointer", cl::Hidden, cl::init(true), cl::desc("Enable use of a base pointer for complex stack frames")) ( "ppc-use-base-pointer"  , cl::Hidden  , cl::init(true)  , cl::desc("Enable use of a base pointer for complex stack frames")    )

static

EnableGPRToVecSpills

cl::opt< bool > EnableGPRToVecSpills("ppc-enable-gpr-to-vsr-spills", cl::Hidden, cl::init(false), cl::desc("Enable spills from gpr to vsr rather than stack")) ( "ppc-enable-gpr-to-vsr-spills"  , cl::Hidden  , cl::init(false)  , cl::desc("Enable spills from gpr to vsr rather than stack")    )

static

Referenced by llvm::PPCRegisterInfo::getLargestLegalSuperClass().

MaxCRBitSpillDist

cl::opt< unsigned > MaxCRBitSpillDist("ppc-max-crbit-spill-dist", cl::desc("Maximum search distance for definition of CR bit " "spill on ppc"), cl::Hidden, cl::init(100)) ( "ppc-max-crbit-spill-dist"  , cl::desc("Maximum search distance for definition of CR bit " "spill on ppc")  , cl::Hidden  , cl::init(100)    )

static

Referenced by llvm::PPCRegisterInfo::lowerCRBitSpilling().

ReportAccMoves

cl::opt< bool > ReportAccMoves("ppc-report-acc-moves", cl::desc("Emit information about accumulator register spills " "and copies"), cl::Hidden, cl::init(false)) ( "ppc-report-acc-moves"  , cl::desc("Emit information about accumulator register spills " "and copies")  , cl::Hidden  , cl::init(false)    )

static

Referenced by llvm::PPCRegisterInfo::emitAccCopyInfo(), emitAccSpillRestoreInfo(), and emitWAccSpillRestoreInfo().

StackPtrConst

cl::opt< bool > StackPtrConst("ppc-stack-ptr-caller-preserved", cl::desc("Consider R1 caller preserved so stack saves of " "caller preserved registers can be LICM candidates"), cl::init(true), cl::Hidden) ( "ppc-stack-ptr-caller-preserved"  , cl::desc("Consider R1 caller preserved so stack saves of " "caller preserved registers can be LICM candidates")  , cl::init(true)  , cl::Hidden    )

static

Referenced by llvm::PPCRegisterInfo::isCallerPreservedPhysReg().