ARMISelLowering.cpp File Reference

#include "ARM.h"
#include "ARMAddressingModes.h"
#include "ARMConstantPoolValue.h"
#include "ARMISelLowering.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMRegisterInfo.h"
#include "ARMSubtarget.h"
#include "ARMTargetMachine.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include "llvm/Instruction.h"
#include "llvm/Intrinsics.h"
#include "llvm/GlobalValue.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/VectorExtras.h"
#include "llvm/Support/MathExtras.h"

Include dependency graph for ARMISelLowering.cpp:

Go to the source code of this file.

Functions
static ARMCC::CondCodes	IntCCToARMCC (ISD::CondCode CC)
	IntCCToARMCC - Convert a DAG integer condition code to an ARM CC.
static bool	FPCCToARMCC (ISD::CondCode CC, ARMCC::CondCodes &CondCode, ARMCC::CondCodes &CondCode2)
static void	HowToPassArgument (MVT ObjectVT, unsigned NumGPRs, unsigned StackOffset, unsigned &NeededGPRs, unsigned &NeededStackSize, unsigned &GPRPad, unsigned &StackPad, ISD::ArgFlagsTy Flags)
static SDValue	LowerRET (SDValue Op, SelectionDAG &DAG)
static SDValue	LowerConstantPool (SDValue Op, SelectionDAG &DAG)
static bool	GVIsIndirectSymbol (GlobalValue *GV, Reloc::Model RelocM)
static SDValue	LowerINTRINSIC_WO_CHAIN (SDValue Op, SelectionDAG &DAG)
static SDValue	LowerVASTART (SDValue Op, SelectionDAG &DAG, unsigned VarArgsFrameIndex)
static SDValue	LowerFORMAL_ARGUMENT (SDValue Op, SelectionDAG &DAG, unsigned ArgNo, unsigned &NumGPRs, unsigned &ArgOffset)
static bool	isFloatingPointZero (SDValue Op)
	isFloatingPointZero - Return true if this is +0.0.
static bool	isLegalCmpImmediate (unsigned C, bool isThumb)
static SDValue	getARMCmp (SDValue LHS, SDValue RHS, ISD::CondCode CC, SDValue &ARMCC, SelectionDAG &DAG, bool isThumb)
static SDValue	getVFPCmp (SDValue LHS, SDValue RHS, SelectionDAG &DAG)
	Returns a appropriate VFP CMP (fcmp{s|d}+fmstat) for the given operands.
static SDValue	LowerSELECT_CC (SDValue Op, SelectionDAG &DAG, const ARMSubtarget *ST)
static SDValue	LowerBR_CC (SDValue Op, SelectionDAG &DAG, const ARMSubtarget *ST)
static SDValue	LowerFP_TO_INT (SDValue Op, SelectionDAG &DAG)
static SDValue	LowerINT_TO_FP (SDValue Op, SelectionDAG &DAG)
static SDValue	LowerFCOPYSIGN (SDValue Op, SelectionDAG &DAG)
static SDValue	ExpandBIT_CONVERT (SDNode *N, SelectionDAG &DAG)
static SDValue	ExpandSRx (SDNode *N, SelectionDAG &DAG, const ARMSubtarget *ST)
static SDValue	PerformFMRRDCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI)
	PerformFMRRDCombine - Target-specific dag combine xforms for ARMISD::FMRRD.
static bool	isLegalAddressImmediate (int64_t V, MVT VT, const ARMSubtarget *Subtarget)
static bool	getIndexedAddressParts (SDNode *Ptr, MVT VT, bool isSEXTLoad, SDValue &Base, SDValue &Offset, bool &isInc, SelectionDAG &DAG)

---

Function Documentation

static SDValue ExpandBIT_CONVERT	(	SDNode *	N,
		SelectionDAG &	DAG
	)			[static]

Definition at line 1352 of file ARMISelLowering.cpp.

References llvm::ISD::BUILD_PAIR, llvm::ISD::EXTRACT_ELEMENT, llvm::MVT::f64, llvm::ARMISD::FMDRR, llvm::ARMISD::FMRRD, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDNode::getOperand(), llvm::SDValue::getValue(), llvm::SDNode::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::i32, and llvm::MVT::i64.

Referenced by llvm::ARMTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::ReplaceNodeResults().

static SDValue ExpandSRx	(	SDNode *	N,
		SelectionDAG &	DAG,
		const ARMSubtarget *	ST
	)			[static]

Definition at line 1371 of file ARMISelLowering.cpp.

References llvm::ISD::BUILD_PAIR, llvm::ISD::EXTRACT_ELEMENT, llvm::MVT::Flag, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::SDValue::getValue(), llvm::SDNode::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::i32, llvm::MVT::i64, llvm::ARMSubtarget::isThumb(), llvm::ARMISD::RRX, llvm::ISD::SRA, llvm::ARMISD::SRA_FLAG, llvm::ISD::SRL, and llvm::ARMISD::SRL_FLAG.

Referenced by llvm::ARMTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::ReplaceNodeResults().

static bool FPCCToARMCC	(	ISD::CondCode	CC,
		ARMCC::CondCodes &	CondCode,
		ARMCC::CondCodes &	CondCode2
	)			[static]

FPCCToARMCC - Convert a DAG fp condition code to an ARM CC. It returns true if the operands should be inverted to form the proper comparison.

Definition at line 331 of file ARMISelLowering.cpp.

References llvm::ARMCC::AL, llvm::ARMCC::EQ, llvm::ARMCC::GE, llvm::ARMCC::GT, llvm::ARMCC::HI, llvm::ARMCC::LE, llvm::ARMCC::LT, llvm::ARMCC::MI, llvm::ARMCC::NE, llvm::ARMCC::PL, llvm::ISD::SETEQ, llvm::ISD::SETGE, llvm::ISD::SETGT, llvm::ISD::SETLE, llvm::ISD::SETLT, llvm::ISD::SETNE, llvm::ISD::SETO, llvm::ISD::SETOEQ, llvm::ISD::SETOGE, llvm::ISD::SETOGT, llvm::ISD::SETOLE, llvm::ISD::SETOLT, llvm::ISD::SETONE, llvm::ISD::SETUEQ, llvm::ISD::SETUGE, llvm::ISD::SETUGT, llvm::ISD::SETULE, llvm::ISD::SETULT, llvm::ISD::SETUNE, llvm::ISD::SETUO, llvm::ARMCC::VC, and llvm::ARMCC::VS.

Referenced by LowerBR_CC(), and LowerSELECT_CC().

static SDValue getARMCmp	(	SDValue	LHS,
		SDValue	RHS,
		ISD::CondCode	CC,
		SDValue &	ARMCC,
		SelectionDAG &	DAG,
		bool	isThumb
	)			[static]

Returns appropriate ARM CMP (cmp) and corresponding condition code for the given operands.

Definition at line 1056 of file ARMISelLowering.cpp.

References llvm::CallingConv::C, llvm::ARMISD::CMP, llvm::ARMISD::CMPNZ, llvm::ARMCC::EQ, llvm::MVT::Flag, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getNode(), llvm::MVT::i32, IntCCToARMCC(), isLegalCmpImmediate(), llvm::ARMCC::MI, llvm::ARMCC::NE, llvm::ARMCC::PL, llvm::ISD::SETGE, llvm::ISD::SETGT, llvm::ISD::SETLE, llvm::ISD::SETLT, llvm::ISD::SETUGE, llvm::ISD::SETUGT, llvm::ISD::SETULE, and llvm::ISD::SETULT.

Referenced by LowerBR_CC(), and LowerSELECT_CC().

static bool getIndexedAddressParts	(	SDNode *	Ptr,
		MVT	VT,
		bool	isSEXTLoad,
		SDValue &	Base,
		SDValue &	Offset,
		bool &	isInc,
		SelectionDAG &	DAG
	)			[static]

Definition at line 1668 of file ARMISelLowering.cpp.

References llvm::ISD::ADD, llvm::SelectionDAG::getConstant(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::ARM_AM::getShiftOpcForNode(), llvm::MVT::i1, llvm::MVT::i16, llvm::MVT::i32, llvm::MVT::i8, llvm::ARM_AM::no_shift, RHS, and llvm::ISD::SUB.

Referenced by llvm::ARMTargetLowering::getPostIndexedAddressParts(), and llvm::ARMTargetLowering::getPreIndexedAddressParts().

static SDValue getVFPCmp	(	SDValue	LHS,
		SDValue	RHS,
		SelectionDAG &	DAG
	)			[static]

Returns a appropriate VFP CMP (fcmp{s|d}+fmstat) for the given operands.

Definition at line 1115 of file ARMISelLowering.cpp.

References llvm::ARMISD::CMPFP, llvm::ARMISD::CMPFPw0, llvm::MVT::Flag, llvm::ARMISD::FMSTAT, llvm::SelectionDAG::getNode(), and isFloatingPointZero().

Referenced by LowerBR_CC(), LowerFCOPYSIGN(), and LowerSELECT_CC().

static bool GVIsIndirectSymbol	(	GlobalValue *	GV,
		Reloc::Model	RelocM
	)			[static]

GVIsIndirectSymbol - true if the GV will be accessed via an indirect symbol even in non-static mode.

Definition at line 834 of file ARMISelLowering.cpp.

References llvm::GlobalValue::hasCommonLinkage(), llvm::GlobalValue::hasHiddenVisibility(), llvm::GlobalValue::hasNotBeenReadFromBitcode(), llvm::GlobalValue::isDeclaration(), llvm::GlobalValue::mayBeOverridden(), and llvm::Reloc::Static.

static void HowToPassArgument	(	MVT	ObjectVT,
		unsigned	NumGPRs,
		unsigned	StackOffset,
		unsigned &	NeededGPRs,
		unsigned &	NeededStackSize,
		unsigned &	GPRPad,
		unsigned &	StackPad,
		ISD::ArgFlagsTy	Flags
	)			[static]

Definition at line 362 of file ARMISelLowering.cpp.

References llvm::MVT::f32, llvm::MVT::f64, llvm::ISD::ArgFlagsTy::getOrigAlign(), llvm::MVT::getSimpleVT(), llvm::MVT::i32, and llvm::MVT::i64.

Referenced by LowerFORMAL_ARGUMENT().

static ARMCC::CondCodes IntCCToARMCC

(

ISD::CondCode

CC

)

[static]

IntCCToARMCC - Convert a DAG integer condition code to an ARM CC.

Definition at line 312 of file ARMISelLowering.cpp.

References llvm::ARMCC::EQ, llvm::ARMCC::GE, llvm::ARMCC::GT, llvm::ARMCC::HI, llvm::ARMCC::HS, llvm::ARMCC::LE, llvm::ARMCC::LO, llvm::ARMCC::LS, llvm::ARMCC::LT, llvm::ARMCC::NE, llvm::ISD::SETEQ, llvm::ISD::SETGE, llvm::ISD::SETGT, llvm::ISD::SETLE, llvm::ISD::SETLT, llvm::ISD::SETNE, llvm::ISD::SETUGE, llvm::ISD::SETUGT, llvm::ISD::SETULE, and llvm::ISD::SETULT.

Referenced by getARMCmp().

static bool isFloatingPointZero

(

SDValue

Op

)

[static]

isFloatingPointZero - Return true if this is +0.0.

Definition at line 1034 of file ARMISelLowering.cpp.

References CP, llvm::SDValue::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), llvm::ISD::isEXTLoad(), llvm::ISD::isNON_EXTLoad(), and llvm::ARMISD::Wrapper.

Referenced by getVFPCmp().

static bool isLegalAddressImmediate	(	int64_t	V,
		MVT	VT,
		const ARMSubtarget *	Subtarget
	)			[static]

isLegalAddressImmediate - Return true if the integer value can be used as the offset of the target addressing mode for load / store of the given type.

Definition at line 1554 of file ARMISelLowering.cpp.

References llvm::MVT::f32, llvm::MVT::f64, llvm::MVT::getSimpleVT(), llvm::ARMSubtarget::hasVFP2(), llvm::MVT::i1, llvm::MVT::i16, llvm::MVT::i32, llvm::MVT::i8, llvm::ARMSubtarget::isThumb(), and Scale.

Referenced by llvm::ARMTargetLowering::isLegalAddressingMode().

static bool isLegalCmpImmediate	(	unsigned	C,
		bool	isThumb
	)			[static]

Definition at line 1049 of file ARMISelLowering.cpp.

References llvm::ARM_AM::getSOImmVal().

Referenced by getARMCmp().

static SDValue LowerBR_CC	(	SDValue	Op,
		SelectionDAG &	DAG,
		const ARMSubtarget *	ST
	)			[static]

Definition at line 1158 of file ARMISelLowering.cpp.

References llvm::ARMCC::AL, llvm::ARMISD::BRCOND, Dest, llvm::MVT::f32, llvm::MVT::f64, llvm::MVT::Flag, FPCCToARMCC(), getARMCmp(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::SelectionDAG::getRegister(), llvm::SDValue::getValue(), llvm::SDValue::getValueType(), getVFPCmp(), llvm::SelectionDAG::getVTList(), llvm::MVT::i32, llvm::ARMSubtarget::isThumb(), LHS, llvm::MVT::Other, RHS, and std::swap().

Referenced by llvm::SparcTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerConstantPool	(	SDValue	Op,
		SelectionDAG &	DAG
	)			[static]

Definition at line 707 of file ARMISelLowering.cpp.

References CP, llvm::ConstantPoolSDNode::getAlignment(), llvm::ConstantPoolSDNode::getConstVal(), llvm::ConstantPoolSDNode::getMachineCPVal(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getTargetConstantPool(), llvm::SDValue::getValueType(), llvm::MVT::i32, llvm::ConstantPoolSDNode::isMachineConstantPoolEntry(), and llvm::ARMISD::Wrapper.

Referenced by llvm::SPU::LowerConstantPool(), llvm::SPUTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerFCOPYSIGN	(	SDValue	Op,
		SelectionDAG &	DAG
	)			[static]

Definition at line 1231 of file ARMISelLowering.cpp.

References llvm::ARMISD::CNEG, llvm::ISD::FABS, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getConstantFP(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::SelectionDAG::getRegister(), llvm::SDValue::getValueType(), getVFPCmp(), llvm::MVT::i32, llvm::ARMCC::LT, and VT.

Referenced by llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerFORMAL_ARGUMENT	(	SDValue	Op,
		SelectionDAG &	DAG,
		unsigned	ArgNo,
		unsigned &	NumGPRs,
		unsigned &	ArgOffset
	)			[static]

Definition at line 912 of file ARMISelLowering.cpp.

References llvm::MachineRegisterInfo::addLiveIn(), llvm::ISD::BIT_CONVERT, llvm::MachineFrameInfo::CreateFixedObject(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::MVT::f32, llvm::MVT::f64, FI, llvm::ARMISD::FMDRR, llvm::SelectionDAG::getCopyFromReg(), llvm::SelectionDAG::getFrameIndex(), llvm::MachineFunction::getFrameInfo(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMachineFunction(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::MachineFunction::getRegInfo(), llvm::SDValue::getValue(), llvm::SDValue::getValueType(), HowToPassArgument(), llvm::MVT::i32, llvm::MVT::i64, MF, MFI, RegInfo, and Root.

static SDValue LowerFP_TO_INT	(	SDValue	Op,
		SelectionDAG &	DAG
	)			[static]

Definition at line 1215 of file ARMISelLowering.cpp.

References llvm::ISD::BIT_CONVERT, llvm::MVT::f32, llvm::ISD::FP_TO_SINT, llvm::ARMISD::FTOSI, llvm::ARMISD::FTOUI, llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), and llvm::MVT::i32.

Referenced by llvm::SPUTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerINT_TO_FP	(	SDValue	Op,
		SelectionDAG &	DAG
	)			[static]

Definition at line 1222 of file ARMISelLowering.cpp.

References llvm::ISD::BIT_CONVERT, llvm::MVT::f32, llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), llvm::SDValue::getValueType(), llvm::ISD::SINT_TO_FP, llvm::ARMISD::SITOF, llvm::ARMISD::UITOF, and VT.

Referenced by llvm::SPUTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerINTRINSIC_WO_CHAIN	(	SDValue	Op,
		SelectionDAG &	DAG
	)			[static]

Definition at line 892 of file ARMISelLowering.cpp.

References llvm::Intrinsic::arm_thread_pointer, llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::TargetLowering::getPointerTy(), llvm::SelectionDAG::getTargetLoweringInfo(), and llvm::ARMISD::THREAD_POINTER.

Referenced by llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerRET	(	SDValue	Op,
		SelectionDAG &	DAG
	)			[static]

Definition at line 645 of file ARMISelLowering.cpp.

References llvm::MachineRegisterInfo::addLiveOut(), llvm::ISD::BIT_CONVERT, llvm::MVT::f32, llvm::MVT::f64, llvm::ARMISD::FMRRD, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getCopyToReg(), llvm::SelectionDAG::getMachineFunction(), llvm::SelectionDAG::getNode(), llvm::SDValue::getNumOperands(), llvm::SDValue::getOperand(), llvm::MachineFunction::getRegInfo(), llvm::SelectionDAG::getRegister(), llvm::SDValue::getValue(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::i32, llvm::MachineRegisterInfo::liveout_empty(), llvm::MVT::Other, llvm::ISD::RET, and llvm::ARMISD::RET_FLAG.

static SDValue LowerSELECT_CC	(	SDValue	Op,
		SelectionDAG &	DAG,
		const ARMSubtarget *	ST
	)			[static]

Definition at line 1124 of file ARMISelLowering.cpp.

References llvm::ARMCC::AL, llvm::ARMISD::CMOV, FPCCToARMCC(), getARMCmp(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::SelectionDAG::getRegister(), llvm::SDValue::getValueType(), getVFPCmp(), llvm::MVT::i32, llvm::ARMSubtarget::isThumb(), LHS, RHS, std::swap(), and VT.

Referenced by llvm::SPUTargetLowering::LowerOperation(), llvm::SparcTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::LowerOperation().

static SDValue LowerVASTART	(	SDValue	Op,
		SelectionDAG &	DAG,
		unsigned	VarArgsFrameIndex
	)			[static]

Definition at line 902 of file ARMISelLowering.cpp.

References llvm::SelectionDAG::getFrameIndex(), llvm::SDValue::getOperand(), llvm::TargetLowering::getPointerTy(), llvm::SelectionDAG::getStore(), and llvm::SelectionDAG::getTargetLoweringInfo().

Referenced by llvm::SparcTargetLowering::LowerOperation(), and llvm::ARMTargetLowering::LowerOperation().

static SDValue PerformFMRRDCombine	(	SDNode *	N,
		TargetLowering::DAGCombinerInfo &	DCI
	)			[static]

PerformFMRRDCombine - Target-specific dag combine xforms for ARMISD::FMRRD.

Definition at line 1531 of file ARMISelLowering.cpp.

References llvm::TargetLowering::DAGCombinerInfo::CombineTo(), llvm::ARMISD::FMDRR, llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), and llvm::SDNode::getOperand().

Referenced by llvm::ARMTargetLowering::PerformDAGCombine().