ARM_AM - ARM Addressing Mode Stuff. More...

Enumerations
enum	ShiftOpc { no_shift = 0, asr, lsl, lsr, ror, rrx }

enum	AddrOpc { sub = 0, add }

enum	AMSubMode { bad_am_submode = 0, ia, ib, da, db }

Functions
AMSubMode	getLoadStoreMultipleSubMode (int Opcode)

static ShiftOpc	getShiftOpcForNode (unsigned Opcode)

static const char *	getAddrOpcStr (AddrOpc Op)

static const char *	getShiftOpcStr (ShiftOpc Op)

static unsigned	getShiftOpcEncoding (ShiftOpc Op)

static const char *	getAMSubModeStr (AMSubMode Mode)

static unsigned	rotr32 (unsigned Val, unsigned Amt)

static unsigned	rotl32 (unsigned Val, unsigned Amt)

static unsigned	getSORegOpc (ShiftOpc ShOp, unsigned Imm)

static unsigned	getSORegOffset (unsigned Op)

static ShiftOpc	getSORegShOp (unsigned Op)

static unsigned	getSOImmValImm (unsigned Imm)

static unsigned	getSOImmValRot (unsigned Imm)

static unsigned	getSOImmValRotate (unsigned Imm)

static int	getSOImmVal (unsigned Arg)

static bool	isSOImmTwoPartVal (unsigned V)

static unsigned	getSOImmTwoPartFirst (unsigned V)

static unsigned	getSOImmTwoPartSecond (unsigned V)

static unsigned	getThumbImmValShift (unsigned Imm)

static bool	isThumbImmShiftedVal (unsigned V)

static unsigned	getThumbImm16ValShift (unsigned Imm)

static bool	isThumbImm16ShiftedVal (unsigned V)

static unsigned	getThumbImmNonShiftedVal (unsigned V)

static int	getT2SOImmValSplatVal (unsigned V)

static int	getT2SOImmValRotateVal (unsigned V)

static int	getT2SOImmVal (unsigned Arg)

static unsigned	getT2SOImmValRotate (unsigned V)

static bool	isT2SOImmTwoPartVal (unsigned Imm)

static unsigned	getT2SOImmTwoPartFirst (unsigned Imm)

static unsigned	getT2SOImmTwoPartSecond (unsigned Imm)

static unsigned	getAM2Opc (AddrOpc Opc, unsigned Imm12, ShiftOpc SO, unsigned IdxMode=0)

static unsigned	getAM2Offset (unsigned AM2Opc)

static AddrOpc	getAM2Op (unsigned AM2Opc)

static ShiftOpc	getAM2ShiftOpc (unsigned AM2Opc)

static unsigned	getAM2IdxMode (unsigned AM2Opc)

static unsigned	getAM3Opc (AddrOpc Opc, unsigned char Offset, unsigned IdxMode=0)
	getAM3Opc - This function encodes the addrmode3 opc field. More...

static unsigned char	getAM3Offset (unsigned AM3Opc)

static AddrOpc	getAM3Op (unsigned AM3Opc)

static unsigned	getAM3IdxMode (unsigned AM3Opc)

static AMSubMode	getAM4SubMode (unsigned Mode)

static unsigned	getAM4ModeImm (AMSubMode SubMode)

static unsigned	getAM5Opc (AddrOpc Opc, unsigned char Offset)
	getAM5Opc - This function encodes the addrmode5 opc field. More...

static unsigned char	getAM5Offset (unsigned AM5Opc)

static AddrOpc	getAM5Op (unsigned AM5Opc)

static unsigned	createNEONModImm (unsigned OpCmode, unsigned Val)

static unsigned	getNEONModImmOpCmode (unsigned ModImm)

static unsigned	getNEONModImmVal (unsigned ModImm)

static uint64_t	decodeNEONModImm (unsigned ModImm, unsigned &EltBits)

static float	getFPImmFloat (unsigned Imm)

static int	getFP32Imm (const APInt &Imm)

static int	getFP32Imm (const APFloat &FPImm)

static int	getFP64Imm (const APInt &Imm)

static int	getFP64Imm (const APFloat &FPImm)

Detailed Description

ARM_AM - ARM Addressing Mode Stuff.

Enumeration Type Documentation

enum llvm::ARM_AM::AddrOpc

Enumerator
sub
add

Definition at line 36 of file ARMAddressingModes.h.

enum llvm::ARM_AM::AMSubMode

Enumerator
bad_am_submode
ia
ib
da
db

Definition at line 66 of file ARMAddressingModes.h.

enum llvm::ARM_AM::ShiftOpc

Enumerator
no_shift
asr
lsl
lsr
ror
rrx

Definition at line 27 of file ARMAddressingModes.h.

Function Documentation

static unsigned llvm::ARM_AM::createNEONModImm	(	unsigned	OpCmode,
		unsigned	Val
	)

inlinestatic

Definition at line 528 of file ARMAddressingModes.h.

Referenced by isNEONModifiedImm().

static uint64_t llvm::ARM_AM::decodeNEONModImm	(	unsigned	ModImm,
		unsigned &	EltBits
	)

inlinestatic

decodeNEONModImm - Decode a NEON modified immediate value into the element value and the element size in bits. (If the element size is smaller than the vector, it is splatted into all the elements.)

Definition at line 541 of file ARMAddressingModes.h.

References getNEONModImmOpCmode(), getNEONModImmVal(), llvm::X86II::Imm8, and llvm_unreachable.

Referenced by PerformVDUPLANECombine(), and llvm::ARMInstPrinter::printNEONModImmOperand().

static const char* llvm::ARM_AM::getAddrOpcStr ( AddrOpc Op )

inlinestatic

Definition at line 41 of file ARMAddressingModes.h.

References sub.

Referenced by llvm::ARMInstPrinter::printAddrMode2OffsetOperand(), llvm::ARMInstPrinter::printAddrMode3OffsetOperand(), llvm::ARMInstPrinter::printAddrMode5Operand(), llvm::ARMInstPrinter::printAM2PreOrOffsetIndexOp(), llvm::ARMInstPrinter::printAM3PostIndexOp(), and llvm::ARMInstPrinter::printAM3PreOrOffsetIndexOp().

static unsigned llvm::ARM_AM::getAM2IdxMode ( unsigned AM2Opc )

inlinestatic

Definition at line 422 of file ARMAddressingModes.h.

Referenced by llvm::ARMInstPrinter::printAddrMode2Operand().

static unsigned llvm::ARM_AM::getAM2Offset ( unsigned AM2Opc )

inlinestatic

Definition at line 413 of file ARMAddressingModes.h.

Referenced by adjustDefLatency(), llvm::ARMBaseInstrInfo::convertToThreeAddress(), llvm::ARMTargetLowering::EmitInstrWithCustomInserter(), llvm::ARMBaseRegisterInfo::getFrameIndexInstrOffset(), getNumMicroOpsSwiftLdSt(), llvm::ARMBaseInstrInfo::getOperandLatency(), llvm::ARMInstPrinter::printAddrMode2OffsetOperand(), llvm::ARMInstPrinter::printAM2PreOrOffsetIndexOp(), and llvm::rewriteARMFrameIndex().

static AddrOpc llvm::ARM_AM::getAM2Op ( unsigned AM2Opc )

inlinestatic

Definition at line 416 of file ARMAddressingModes.h.

References add, and sub.

Referenced by adjustDefLatency(), llvm::ARMBaseInstrInfo::convertToThreeAddress(), llvm::ARMTargetLowering::EmitInstrWithCustomInserter(), llvm::ARMBaseRegisterInfo::getFrameIndexInstrOffset(), getNumMicroOpsSwiftLdSt(), llvm::ARMInstPrinter::printAddrMode2OffsetOperand(), llvm::ARMInstPrinter::printAM2PreOrOffsetIndexOp(), and llvm::rewriteARMFrameIndex().

static unsigned llvm::ARM_AM::getAM2Opc	(	AddrOpc	Opc,
		unsigned	Imm12,
		ShiftOpc	SO,
		unsigned	IdxMode = `0`
	)

inlinestatic

Definition at line 407 of file ARMAddressingModes.h.

References sub.

Referenced by DecodeAddrMode2IdxInstruction(), and DecodeSORegMemOperand().

static ShiftOpc llvm::ARM_AM::getAM2ShiftOpc ( unsigned AM2Opc )

inlinestatic

Definition at line 419 of file ARMAddressingModes.h.

Referenced by adjustDefLatency(), llvm::ARMBaseInstrInfo::convertToThreeAddress(), getNumMicroOpsSwiftLdSt(), llvm::ARMBaseInstrInfo::getOperandLatency(), llvm::ARMInstPrinter::printAddrMode2OffsetOperand(), and llvm::ARMInstPrinter::printAM2PreOrOffsetIndexOp().

static unsigned llvm::ARM_AM::getAM3IdxMode ( unsigned AM3Opc )

inlinestatic

Definition at line 453 of file ARMAddressingModes.h.

Referenced by llvm::ARMInstPrinter::printAddrMode3Operand().

static unsigned char llvm::ARM_AM::getAM3Offset ( unsigned AM3Opc )

inlinestatic

Definition at line 447 of file ARMAddressingModes.h.

Referenced by llvm::ARMBaseInstrInfo::convertToThreeAddress(), llvm::ARMBaseRegisterInfo::getFrameIndexInstrOffset(), getMemoryOpOffset(), llvm::ARMInstPrinter::printAddrMode3OffsetOperand(), llvm::ARMInstPrinter::printAM3PostIndexOp(), llvm::ARMInstPrinter::printAM3PreOrOffsetIndexOp(), and llvm::rewriteARMFrameIndex().

static AddrOpc llvm::ARM_AM::getAM3Op ( unsigned AM3Opc )

inlinestatic

Definition at line 450 of file ARMAddressingModes.h.

References add, and sub.

Referenced by llvm::ARMBaseInstrInfo::convertToThreeAddress(), llvm::ARMBaseRegisterInfo::getFrameIndexInstrOffset(), getMemoryOpOffset(), getNumMicroOpsSwiftLdSt(), llvm::ARMInstPrinter::printAddrMode3OffsetOperand(), llvm::ARMInstPrinter::printAM3PostIndexOp(), llvm::ARMInstPrinter::printAM3PreOrOffsetIndexOp(), and llvm::rewriteARMFrameIndex().

static unsigned llvm::ARM_AM::getAM3Opc	(	AddrOpc	Opc,
		unsigned char	Offset,
		unsigned	IdxMode = `0`
	)

inlinestatic

getAM3Opc - This function encodes the addrmode3 opc field.

Definition at line 442 of file ARMAddressingModes.h.

References sub.

static unsigned llvm::ARM_AM::getAM4ModeImm ( AMSubMode SubMode )

inlinestatic

Definition at line 476 of file ARMAddressingModes.h.

static AMSubMode llvm::ARM_AM::getAM4SubMode ( unsigned Mode )

inlinestatic

Definition at line 472 of file ARMAddressingModes.h.

Referenced by llvm::ARMInstPrinter::printLdStmModeOperand().

static unsigned char llvm::ARM_AM::getAM5Offset ( unsigned AM5Opc )

inlinestatic

Definition at line 496 of file ARMAddressingModes.h.

Referenced by llvm::ARMBaseRegisterInfo::getFrameIndexInstrOffset(), getMemoryOpOffset(), llvm::ARMInstPrinter::printAddrMode5Operand(), llvm::rewriteARMFrameIndex(), and llvm::rewriteT2FrameIndex().

static AddrOpc llvm::ARM_AM::getAM5Op ( unsigned AM5Opc )

inlinestatic

Definition at line 499 of file ARMAddressingModes.h.

References add, and sub.

Referenced by llvm::ARMBaseRegisterInfo::getFrameIndexInstrOffset(), getMemoryOpOffset(), llvm::ARMInstPrinter::printAddrMode5Operand(), llvm::rewriteARMFrameIndex(), and llvm::rewriteT2FrameIndex().

static unsigned llvm::ARM_AM::getAM5Opc	(	AddrOpc	Opc,
		unsigned char	Offset
	)

inlinestatic

getAM5Opc - This function encodes the addrmode5 opc field.

Definition at line 492 of file ARMAddressingModes.h.

References sub.

Referenced by DecodeAddrMode5Operand(), and DecodeCopMemInstruction().

static const char* llvm::ARM_AM::getAMSubModeStr ( AMSubMode Mode )

inlinestatic

Definition at line 74 of file ARMAddressingModes.h.

References da, db, ia, ib, and llvm_unreachable.

Referenced by llvm::ARMInstPrinter::printLdStmModeOperand().

static int llvm::ARM_AM::getFP32Imm ( const APInt & Imm )

inlinestatic

getFP32Imm - Return an 8-bit floating-point version of the 32-bit floating-point value. If the value cannot be represented as an 8-bit floating-point value, then return -1.

Definition at line 611 of file ARMAddressingModes.h.

References llvm::APInt::getSExtValue(), llvm::APInt::getZExtValue(), and llvm::APInt::lshr().

Referenced by getFP32Imm(), and llvm::ARMTargetLowering::isFPImmLegal().

static int llvm::ARM_AM::getFP32Imm ( const APFloat & FPImm )

inlinestatic

Definition at line 632 of file ARMAddressingModes.h.

References llvm::APFloat::bitcastToAPInt(), and getFP32Imm().

static int llvm::ARM_AM::getFP64Imm ( const APInt & Imm )

inlinestatic

getFP64Imm - Return an 8-bit floating-point version of the 64-bit floating-point value. If the value cannot be represented as an 8-bit floating-point value, then return -1.

Definition at line 639 of file ARMAddressingModes.h.

References llvm::APInt::getSExtValue(), llvm::APInt::getZExtValue(), and llvm::APInt::lshr().

Referenced by getFP64Imm(), and llvm::ARMTargetLowering::isFPImmLegal().

static int llvm::ARM_AM::getFP64Imm ( const APFloat & FPImm )

inlinestatic

Definition at line 660 of file ARMAddressingModes.h.

References llvm::APFloat::bitcastToAPInt(), and getFP64Imm().

static float llvm::ARM_AM::getFPImmFloat ( unsigned Imm )

inlinestatic

Definition at line 583 of file ARMAddressingModes.h.

References F(), and I.

Referenced by llvm::ARMInstPrinter::printFPImmOperand().

AMSubMode llvm::ARM_AM::getLoadStoreMultipleSubMode ( int Opcode )

Definition at line 212 of file ARMLoadStoreOptimizer.cpp.

References da, db, ia, ib, and llvm_unreachable.

static unsigned llvm::ARM_AM::getNEONModImmOpCmode ( unsigned ModImm )

inlinestatic

Definition at line 531 of file ARMAddressingModes.h.

Referenced by decodeNEONModImm().

static unsigned llvm::ARM_AM::getNEONModImmVal ( unsigned ModImm )

inlinestatic

Definition at line 534 of file ARMAddressingModes.h.

Referenced by decodeNEONModImm().

static unsigned llvm::ARM_AM::getShiftOpcEncoding ( ShiftOpc Op )

inlinestatic

Definition at line 56 of file ARMAddressingModes.h.

References asr, llvm_unreachable, lsl, lsr, and ror.

static ShiftOpc llvm::ARM_AM::getShiftOpcForNode ( unsigned Opcode )

inlinestatic

Definition at line 23 of file ARMSelectionDAGInfo.h.

References asr, lsl, lsr, no_shift, ror, llvm::ISD::ROTR, llvm::ISD::SHL, llvm::ISD::SRA, and llvm::ISD::SRL.

Referenced by getARMIndexedAddressParts().

static const char* llvm::ARM_AM::getShiftOpcStr ( ShiftOpc Op )

inlinestatic

Definition at line 45 of file ARMAddressingModes.h.

References asr, llvm_unreachable, lsl, lsr, ror, and rrx.

Referenced by llvm::ARMInstPrinter::printInst(), printRegImmShift(), and llvm::ARMInstPrinter::printSORegRegOperand().

static unsigned llvm::ARM_AM::getSOImmTwoPartFirst ( unsigned V )

inlinestatic

getSOImmTwoPartFirst - If V is a value that satisfies isSOImmTwoPartVal, return the first chunk of it.

Definition at line 201 of file ARMAddressingModes.h.

References getSOImmValRotate(), and rotr32().

Referenced by llvm::ARMBaseInstrInfo::FoldImmediate().

static unsigned llvm::ARM_AM::getSOImmTwoPartSecond ( unsigned V )

inlinestatic

getSOImmTwoPartSecond - If V is a value that satisfies isSOImmTwoPartVal, return the second chunk of it.

Definition at line 207 of file ARMAddressingModes.h.

References getSOImmValRotate(), and rotr32().

Referenced by llvm::ARMBaseInstrInfo::FoldImmediate().

static int llvm::ARM_AM::getSOImmVal ( unsigned Arg )

inlinestatic

getSOImmVal - Given a 32-bit immediate, if it is something that can fit into an shifter_operand immediate operand, return the 12-bit encoding for it. If not, return -1.

Definition at line 171 of file ARMAddressingModes.h.

References getSOImmValRotate(), rotl32(), and rotr32().

Referenced by adjustFixupValue(), llvm::ARMBaseInstrInfo::convertToThreeAddress(), llvm::ARMTargetLowering::isLegalAddImmediate(), llvm::ARMTargetLowering::isLegalICmpImmediate(), IsSingleInstrConstant(), llvm::ARMTargetLowering::LowerAsmOperandForConstraint(), and llvm::rewriteARMFrameIndex().

static unsigned llvm::ARM_AM::getSOImmValImm ( unsigned Imm )

inlinestatic

getSOImmValImm - Given an encoded imm field for the reg/imm form, return the 8-bit imm value.

Definition at line 124 of file ARMAddressingModes.h.

static unsigned llvm::ARM_AM::getSOImmValRot ( unsigned Imm )

inlinestatic

getSOImmValRot - Given an encoded imm field for the reg/imm form, return the rotate amount.

Definition at line 129 of file ARMAddressingModes.h.

static unsigned llvm::ARM_AM::getSOImmValRotate ( unsigned Imm )

inlinestatic

getSOImmValRotate - Try to handle Imm with an immediate shifter operand, computing the rotate amount to use. If this immediate value cannot be handled with a single shifter-op, determine a good rotate amount that will take a maximal chunk of bits out of the immediate.

Definition at line 137 of file ARMAddressingModes.h.

References llvm::countTrailingZeros(), and rotr32().

Referenced by getSOImmTwoPartFirst(), getSOImmTwoPartSecond(), getSOImmVal(), isSOImmTwoPartVal(), and llvm::rewriteARMFrameIndex().

static unsigned llvm::ARM_AM::getSORegOffset ( unsigned Op )

inlinestatic

Definition at line 115 of file ARMAddressingModes.h.

Referenced by llvm::ARMBaseInstrInfo::isSwiftFastImmShift(), llvm::ARMInstPrinter::printInst(), llvm::ARMInstPrinter::printSORegImmOperand(), llvm::ARMInstPrinter::printSORegRegOperand(), and llvm::ARMInstPrinter::printT2SOOperand().

static unsigned llvm::ARM_AM::getSORegOpc	(	ShiftOpc	ShOp,
		unsigned	Imm
	)

inlinestatic

Definition at line 112 of file ARMAddressingModes.h.

Referenced by llvm::ARMBaseInstrInfo::convertToThreeAddress().

static ShiftOpc llvm::ARM_AM::getSORegShOp ( unsigned Op )

inlinestatic

Definition at line 118 of file ARMAddressingModes.h.

Referenced by llvm::ARMBaseInstrInfo::isSwiftFastImmShift(), llvm::ARMInstPrinter::printInst(), llvm::ARMInstPrinter::printSORegImmOperand(), llvm::ARMInstPrinter::printSORegRegOperand(), and llvm::ARMInstPrinter::printT2SOOperand().

static unsigned llvm::ARM_AM::getT2SOImmTwoPartFirst ( unsigned Imm )

inlinestatic

Definition at line 362 of file ARMAddressingModes.h.

References getT2SOImmVal(), getT2SOImmValRotate(), getT2SOImmValSplatVal(), isT2SOImmTwoPartVal(), and rotr32().

Referenced by llvm::ARMBaseInstrInfo::FoldImmediate(), and getT2SOImmTwoPartSecond().

static unsigned llvm::ARM_AM::getT2SOImmTwoPartSecond ( unsigned Imm )

inlinestatic

Definition at line 379 of file ARMAddressingModes.h.

References getT2SOImmTwoPartFirst(), and getT2SOImmVal().

Referenced by llvm::ARMBaseInstrInfo::FoldImmediate().

static int llvm::ARM_AM::getT2SOImmVal ( unsigned Arg )

inlinestatic

getT2SOImmVal - Given a 32-bit immediate, if it is something that can fit into a Thumb-2 shifter_operand immediate operand, return the 12-bit encoding for it. If not, return -1. See ARM Reference Manual A6.3.2.

Definition at line 314 of file ARMAddressingModes.h.

References getT2SOImmValRotateVal(), and getT2SOImmValSplatVal().

Referenced by getT2SOImmTwoPartFirst(), getT2SOImmTwoPartSecond(), llvm::ARMTargetLowering::isLegalAddImmediate(), llvm::ARMTargetLowering::isLegalICmpImmediate(), isT2SOImmTwoPartVal(), llvm::ARMTargetLowering::LowerAsmOperandForConstraint(), and llvm::rewriteT2FrameIndex().

static unsigned llvm::ARM_AM::getT2SOImmValRotate ( unsigned V )

inlinestatic

Definition at line 328 of file ARMAddressingModes.h.

References llvm::countTrailingZeros().

Referenced by getT2SOImmTwoPartFirst(), and isT2SOImmTwoPartVal().

static int llvm::ARM_AM::getT2SOImmValRotateVal ( unsigned V )

inlinestatic

getT2SOImmValRotateVal - Return the 12-bit encoded representation if the specified value is a rotated 8-bit value. Return -1 if no rotation encoding is possible. See ARM Reference Manual A6.3.2.

Definition at line 298 of file ARMAddressingModes.h.

References llvm::countLeadingZeros(), and rotr32().

Referenced by getT2SOImmVal().

static int llvm::ARM_AM::getT2SOImmValSplatVal ( unsigned V )

inlinestatic

getT2SOImmValSplat - Return the 12-bit encoded representation if the specified value can be obtained by splatting the low 8 bits into every other byte or every byte of a 32-bit value. i.e., 00000000 00000000 00000000 abcdefgh control = 0 00000000 abcdefgh 00000000 abcdefgh control = 1 abcdefgh 00000000 abcdefgh 00000000 control = 2 abcdefgh abcdefgh abcdefgh abcdefgh control = 3 Return -1 if none of the above apply. See ARM Reference Manual A6.3.2.

Definition at line 270 of file ARMAddressingModes.h.

Referenced by getT2SOImmTwoPartFirst(), getT2SOImmVal(), and isT2SOImmTwoPartVal().

static unsigned llvm::ARM_AM::getThumbImm16ValShift ( unsigned Imm )

inlinestatic

getThumbImm16ValShift - Try to handle Imm with a 16-bit immediate followed by a left shift. Returns the shift amount to use.

Definition at line 237 of file ARMAddressingModes.h.

References llvm::countTrailingZeros().

Referenced by isThumbImm16ShiftedVal().

static unsigned llvm::ARM_AM::getThumbImmNonShiftedVal ( unsigned V )

inlinestatic

getThumbImmNonShiftedVal - If V is a value that satisfies isThumbImmShiftedVal, return the non-shiftd value.

Definition at line 256 of file ARMAddressingModes.h.