NVPTXISelLowering.cpp File Reference

#include "NVPTXISelLowering.h"
#include "MCTargetDesc/NVPTXBaseInfo.h"
#include "NVPTX.h"
#include "NVPTXSubtarget.h"
#include "NVPTXTargetMachine.h"
#include "NVPTXTargetObjectFile.h"
#include "NVPTXUtilities.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/CodeGen/Analysis.h"
#include "llvm/CodeGen/ISDOpcodes.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/CodeGen/TargetCallingConv.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
#include "llvm/IR/Argument.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/FPEnv.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicsNVPTX.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Alignment.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/NVPTXAddrSpace.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdint>
#include <iterator>
#include <optional>
#include <string>
#include <utility>
#include <vector>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "nvptx-lower"
#define	MAKE_CASE(V)

Enumerations
enum	ParamVectorizationFlags { PVF_INNER = 0x0 , PVF_FIRST = 0x1 , PVF_LAST = 0x2 , PVF_SCALAR = PVF_FIRST | PVF_LAST }
enum	OperandSignedness { Signed = 0 , Unsigned , Unknown }

Functions
static bool	IsPTXVectorType (MVT VT)
static bool	Is16bitsType (MVT VT)
static std::optional< std::pair< unsigned int, EVT > >	getVectorLoweringShape (EVT VectorVT)
static void	ComputePTXValueVTs (const TargetLowering &TLI, const DataLayout &DL, Type *Ty, SmallVectorImpl< EVT > &ValueVTs, SmallVectorImpl< uint64_t > *Offsets=nullptr, uint64_t StartingOffset=0)
	ComputePTXValueVTs - For the given Type Ty, returns the set of primitive EVTs that compose it.
static bool	PromoteScalarIntegerPTX (const EVT &VT, MVT *PromotedVT)
	PromoteScalarIntegerPTX Used to make sure the arguments/returns are suitable for passing and promote them to a larger size if they're not.
static unsigned	CanMergeParamLoadStoresStartingAt (unsigned Idx, uint32_t AccessSize, const SmallVectorImpl< EVT > &ValueVTs, const SmallVectorImpl< uint64_t > &Offsets, Align ParamAlignment)
static SmallVector< ParamVectorizationFlags, 16 >	VectorizePTXValueVTs (const SmallVectorImpl< EVT > &ValueVTs, const SmallVectorImpl< uint64_t > &Offsets, Align ParamAlignment, bool IsVAArg=false)
static SDValue	MaybeBitcast (SelectionDAG &DAG, SDLoc DL, EVT VT, SDValue Value)
static bool	IsTypePassedAsArray (const Type *Ty)
static bool	adjustElementType (EVT &ElementType)
static SDValue	LowerUnalignedStoreParam (SelectionDAG &DAG, SDValue Chain, uint64_t Offset, EVT ElementType, SDValue StVal, SDValue &InGlue, unsigned ArgID, const SDLoc &dl)
static SDValue	LowerUnalignedLoadRetParam (SelectionDAG &DAG, SDValue &Chain, uint64_t Offset, EVT ElementType, SDValue &InGlue, SmallVectorImpl< SDValue > &TempProxyRegOps, const SDLoc &dl)
static bool	shouldConvertToIndirectCall (const CallBase *CB, const GlobalAddressSDNode *Func)
static SDValue	LowerVectorArith (SDValue Op, SelectionDAG &DAG)
static SDValue	LowerUnalignedStoreRet (SelectionDAG &DAG, SDValue Chain, uint64_t Offset, EVT ElementType, SDValue RetVal, const SDLoc &dl)
static bool	isConstZero (const SDValue &Operand)
static SDValue	PerformADDCombineWithOperands (SDNode *N, SDValue N0, SDValue N1, TargetLowering::DAGCombinerInfo &DCI)
	PerformADDCombineWithOperands - Try DAG combinations for an ADD with operands N0 and N1.
static SDValue	PerformFADDCombineWithOperands (SDNode *N, SDValue N0, SDValue N1, TargetLowering::DAGCombinerInfo &DCI, CodeGenOptLevel OptLevel)
static SDValue	PerformStoreCombineHelper (SDNode *N, std::size_t Front, std::size_t Back)
static SDValue	PerformStoreParamCombine (SDNode *N)
static SDValue	PerformStoreRetvalCombine (SDNode *N)
static SDValue	PerformADDCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI, CodeGenOptLevel OptLevel)
	PerformADDCombine - Target-specific dag combine xforms for ISD::ADD.
static SDValue	PerformFADDCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI, CodeGenOptLevel OptLevel)
	PerformFADDCombine - Target-specific dag combine xforms for ISD::FADD.
static SDValue	PerformANDCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI)
static SDValue	PerformREMCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI, CodeGenOptLevel OptLevel)
static bool	IsMulWideOperandDemotable (SDValue Op, unsigned OptSize, OperandSignedness &S)
	IsMulWideOperandDemotable - Checks if the provided DAG node is an operand that can be demoted to OptSize bits without loss of information.
static bool	AreMulWideOperandsDemotable (SDValue LHS, SDValue RHS, unsigned OptSize, bool &IsSigned)
	AreMulWideOperandsDemotable - Checks if the given LHS and RHS operands can be demoted to OptSize bits without loss of information.
static SDValue	TryMULWIDECombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI)
	TryMULWIDECombine - Attempt to replace a multiply of M bits with a multiply of M/2 bits that produces an M-bit result (i.e.
static bool	isConstOne (const SDValue &Operand)
static SDValue	matchMADConstOnePattern (SDValue Add)
static SDValue	combineMADConstOne (SDValue X, SDValue Add, EVT VT, SDLoc DL, TargetLowering::DAGCombinerInfo &DCI)
static SDValue	combineMulSelectConstOne (SDValue X, SDValue Select, EVT VT, SDLoc DL, TargetLowering::DAGCombinerInfo &DCI)
static SDValue	PerformMULCombineWithOperands (SDNode *N, SDValue N0, SDValue N1, TargetLowering::DAGCombinerInfo &DCI)
static SDValue	PerformMULCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI, CodeGenOptLevel OptLevel)
	PerformMULCombine - Runs PTX-specific DAG combine patterns on MUL nodes.
static SDValue	PerformSHLCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI, CodeGenOptLevel OptLevel)
	PerformSHLCombine - Runs PTX-specific DAG combine patterns on SHL nodes.
static SDValue	PerformSETCCCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI, unsigned int SmVersion)
static SDValue	PerformEXTRACTCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI)
static SDValue	PerformVSELECTCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI)
static SDValue	PerformBUILD_VECTORCombine (SDNode *N, TargetLowering::DAGCombinerInfo &DCI)
static void	ReplaceBITCAST (SDNode *Node, SelectionDAG &DAG, SmallVectorImpl< SDValue > &Results)
static void	ReplaceLoadVector (SDNode *N, SelectionDAG &DAG, SmallVectorImpl< SDValue > &Results)
	ReplaceVectorLoad - Convert vector loads into multi-output scalar loads.
static void	ReplaceINTRINSIC_W_CHAIN (SDNode *N, SelectionDAG &DAG, SmallVectorImpl< SDValue > &Results)
static void	ReplaceCopyFromReg_128 (SDNode *N, SelectionDAG &DAG, SmallVectorImpl< SDValue > &Results)

Variables
static std::atomic< unsigned >	GlobalUniqueCallSite
static cl::opt< bool >	sched4reg ("nvptx-sched4reg", cl::desc("NVPTX Specific: schedule for register pressue"), cl::init(false))
static cl::opt< unsigned >	FMAContractLevelOpt ("nvptx-fma-level", cl::Hidden, cl::desc("NVPTX Specific: FMA contraction (0: don't do it" " 1: do it 2: do it aggressively"), cl::init(2))
static cl::opt< int >	UsePrecDivF32 ("nvptx-prec-divf32", cl::Hidden, cl::desc("NVPTX Specifies: 0 use div.approx, 1 use div.full, 2 use" " IEEE Compliant F32 div.rnd if available."), cl::init(2))
static cl::opt< bool >	UsePrecSqrtF32 ("nvptx-prec-sqrtf32", cl::Hidden, cl::desc("NVPTX Specific: 0 use sqrt.approx, 1 use sqrt.rn."), cl::init(true))
static cl::opt< bool >	ForceMinByValParamAlign ("nvptx-force-min-byval-param-align", cl::Hidden, cl::desc("NVPTX Specific: force 4-byte minimal alignment for byval" " params of device functions."), cl::init(false))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "nvptx-lower"

Definition at line 70 of file NVPTXISelLowering.cpp.

MAKE_CASE

#define MAKE_CASE

(

V

)

Value:

  case V:                                                                      \
    return #V;

Enumeration Type Documentation

OperandSignedness

enum OperandSignedness

Enumerator
Signed
Unsigned
Unknown

Definition at line 4746 of file NVPTXISelLowering.cpp.

ParamVectorizationFlags

enum ParamVectorizationFlags

Enumerator
PVF_INNER
PVF_FIRST
PVF_LAST
PVF_SCALAR

Definition at line 410 of file NVPTXISelLowering.cpp.

Function Documentation

adjustElementType()

static bool adjustElementType ( EVT &  ElementType )

static

Definition at line 1284 of file NVPTXISelLowering.cpp.

Referenced by LowerUnalignedLoadRetParam(), LowerUnalignedStoreParam(), and LowerUnalignedStoreRet().

AreMulWideOperandsDemotable()

static bool AreMulWideOperandsDemotable ( SDValue  LHS, SDValue  RHS, unsigned  OptSize, bool &  IsSigned  )

static

AreMulWideOperandsDemotable - Checks if the given LHS and RHS operands can be demoted to OptSize bits without loss of information.

If the operands contain a constant, it should appear as the RHS operand. The signedness of the operands is placed in IsSigned.

Definition at line 4782 of file NVPTXISelLowering.cpp.

References llvm::APInt::isIntN(), IsMulWideOperandDemotable(), llvm::APInt::isSignedIntN(), LHS, RHS, Signed, llvm::Unknown, and Unsigned.

Referenced by TryMULWIDECombine().

CanMergeParamLoadStoresStartingAt()

static unsigned CanMergeParamLoadStoresStartingAt ( unsigned  Idx, uint32_t  AccessSize, const SmallVectorImpl< EVT > &  ValueVTs, const SmallVectorImpl< uint64_t > &  Offsets, Align  ParamAlignment  )

static

Definition at line 364 of file NVPTXISelLowering.cpp.

References llvm::EVT::getStoreSize(), Idx, and llvm::SmallVectorBase< Size_T >::size().

Referenced by VectorizePTXValueVTs().

combineMADConstOne()

static SDValue combineMADConstOne ( SDValue  X, SDValue  Add, EVT  VT, SDLoc  DL, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 4902 of file NVPTXISelLowering.cpp.

References llvm::Add, llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::SelectionDAG::getNode(), llvm::NVPTXISD::IMAD, matchMADConstOnePattern(), X, and Y.

Referenced by PerformMULCombineWithOperands().

combineMulSelectConstOne()

static SDValue combineMulSelectConstOne ( SDValue  X, SDValue  Select, EVT  VT, SDLoc  DL, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 4911 of file NVPTXISelLowering.cpp.

References Cond, llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::SelectionDAG::getNode(), isConstOne(), matchMADConstOnePattern(), llvm::ISD::MUL, llvm::ISD::SELECT, Select, X, and Y.

Referenced by PerformMULCombineWithOperands().

ComputePTXValueVTs()

static void ComputePTXValueVTs ( const TargetLowering &  TLI, const DataLayout &  DL, Type *  Ty, SmallVectorImpl< EVT > &  ValueVTs, SmallVectorImpl< uint64_t > *  Offsets = nullptr, uint64_t  StartingOffset = 0  )

static

ComputePTXValueVTs - For the given Type Ty, returns the set of primitive EVTs that compose it.

Unlike ComputeValueVTs, this will break apart vectors into their primitive components. NOTE: This is a band-aid for code that expects ComputeValueVTs to return the same number of types as the Ins/Outs arrays in LowerFormalArguments, LowerCall, and LowerReturn.

Definition at line 232 of file NVPTXISelLowering.cpp.

References ComputePTXValueVTs(), llvm::ComputeValueVTs(), DL, llvm::EVT::getSimpleVT(), llvm::EVT::getStoreSize(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorNumElements(), Is16bitsType(), llvm::Type::isIntegerTy(), llvm::isPowerOf2_32(), llvm::EVT::isVector(), llvm_unreachable, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MVT::SimpleTy, and llvm::SmallVectorBase< Size_T >::size().

Referenced by ComputePTXValueVTs(), llvm::NVPTXTargetLowering::LowerCall(), llvm::NVPTXTargetLowering::LowerFormalArguments(), and llvm::NVPTXTargetLowering::LowerReturn().

getVectorLoweringShape()

static std::optional< std::pair< unsigned int, EVT > > getVectorLoweringShape ( EVT  VectorVT )

static

Definition at line 173 of file NVPTXISelLowering.cpp.

References llvm::EVT::getSimpleVT(), llvm::EVT::getSizeInBits(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorNumElements(), llvm::MVT::getVectorVT(), llvm::EVT::isSimple(), llvm::EVT::isVector(), llvm_unreachable, and llvm::MVT::SimpleTy.

Referenced by ReplaceLoadVector().

Is16bitsType()

static bool Is16bitsType ( MVT  VT )

static

Definition at line 160 of file NVPTXISelLowering.cpp.

References llvm::MVT::SimpleTy.

Referenced by ComputePTXValueVTs().

isConstOne()

static bool isConstOne ( const SDValue &  Operand )

static

Definition at line 4884 of file NVPTXISelLowering.cpp.

Referenced by combineMulSelectConstOne(), and matchMADConstOnePattern().

isConstZero()

static bool isConstZero ( const SDValue &  Operand )

static

Definition at line 4424 of file NVPTXISelLowering.cpp.

Referenced by PerformADDCombineWithOperands().

IsMulWideOperandDemotable()

static bool IsMulWideOperandDemotable ( SDValue  Op, unsigned  OptSize, OperandSignedness &  S  )

static

IsMulWideOperandDemotable - Checks if the provided DAG node is an operand that can be demoted to OptSize bits without loss of information.

The signedness of the operand, if determinable, is placed in S.

Definition at line 4755 of file NVPTXISelLowering.cpp.

References llvm::EVT::getFixedSizeInBits(), llvm::ISD::SIGN_EXTEND, llvm::ISD::SIGN_EXTEND_INREG, Signed, llvm::Unknown, Unsigned, and llvm::ISD::ZERO_EXTEND.

Referenced by AreMulWideOperandsDemotable().

IsPTXVectorType()

static bool IsPTXVectorType ( MVT  VT )

static

Definition at line 131 of file NVPTXISelLowering.cpp.

References llvm::MVT::SimpleTy.

Referenced by llvm::NVPTXTargetLowering::NVPTXTargetLowering(), and PerformEXTRACTCombine().

IsTypePassedAsArray()

static bool IsTypePassedAsArray ( const Type *  Ty )

static

Definition at line 1128 of file NVPTXISelLowering.cpp.

References llvm::Type::isAggregateType(), llvm::Type::isBFloatTy(), llvm::Type::isHalfTy(), llvm::Type::isIntegerTy(), and llvm::Type::isVectorTy().

Referenced by llvm::NVPTXTargetLowering::getPrototype(), llvm::NVPTXTargetLowering::LowerCall(), and llvm::NVPTXTargetLowering::LowerFormalArguments().

LowerUnalignedLoadRetParam()

static SDValue LowerUnalignedLoadRetParam ( SelectionDAG &  DAG, SDValue &  Chain, uint64_t  Offset, EVT  ElementType, SDValue &  InGlue, SmallVectorImpl< SDValue > &  TempProxyRegOps, const SDLoc &  dl  )

static

Definition at line 1338 of file NVPTXISelLowering.cpp.

References adjustElementType(), llvm::ISD::AND, llvm::ISD::BITCAST, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getNode(), llvm::SDValue::getSimpleValueType(), llvm::SDValue::getValue(), llvm::SelectionDAG::getVTList(), llvm::NVPTXISD::LoadParam, llvm::Offset, llvm::ISD::OR, llvm::NVPTXISD::ProxyReg, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::ISD::SHL, and llvm::ISD::ZERO_EXTEND.

Referenced by llvm::NVPTXTargetLowering::LowerCall().

LowerUnalignedStoreParam()

static SDValue LowerUnalignedStoreParam ( SelectionDAG &  DAG, SDValue  Chain, uint64_t  Offset, EVT  ElementType, SDValue  StVal, SDValue &  InGlue, unsigned  ArgID, const SDLoc &  dl  )

static

Definition at line 1307 of file NVPTXISelLowering.cpp.

References adjustElementType(), llvm::ISD::BITCAST, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getNode(), llvm::SDValue::getValue(), llvm::SelectionDAG::getVTList(), llvm::MachineMemOperand::MOStore, llvm::Offset, llvm::ISD::SRL, and llvm::NVPTXISD::StoreParam.

Referenced by llvm::NVPTXTargetLowering::LowerCall().

LowerUnalignedStoreRet()

static SDValue LowerUnalignedStoreRet ( SelectionDAG &  DAG, SDValue  Chain, uint64_t  Offset, EVT  ElementType, SDValue  RetVal, const SDLoc &  dl  )

static

Definition at line 3232 of file NVPTXISelLowering.cpp.

References adjustElementType(), llvm::ISD::BITCAST, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getVTList(), llvm::MachineMemOperand::MOStore, llvm::Offset, llvm::ISD::SRL, and llvm::NVPTXISD::StoreRetval.

Referenced by llvm::NVPTXTargetLowering::LowerReturn().

LowerVectorArith()

static SDValue LowerVectorArith ( SDValue  Op, SelectionDAG &  DAG  )

static

Definition at line 2588 of file NVPTXISelLowering.cpp.

References llvm::ISD::BUILD_VECTOR, DL, llvm::SelectionDAG::getNode(), I, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::transform().

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

matchMADConstOnePattern()

static SDValue matchMADConstOnePattern ( SDValue  Add )

static

Definition at line 4889 of file NVPTXISelLowering.cpp.

References llvm::Add, llvm::ISD::ADD, and isConstOne().

Referenced by combineMADConstOne(), and combineMulSelectConstOne().

MaybeBitcast()

static SDValue MaybeBitcast ( SelectionDAG &  DAG, SDLoc  DL, EVT  VT, SDValue  Value  )

static

Definition at line 475 of file NVPTXISelLowering.cpp.

References llvm::ISD::BITCAST, DL, and llvm::SelectionDAG::getNode().

Referenced by ReplaceBITCAST().

PerformADDCombine()

static SDValue PerformADDCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI, CodeGenOptLevel  OptLevel  )

static

PerformADDCombine - Target-specific dag combine xforms for ISD::ADD.

Definition at line 4578 of file NVPTXISelLowering.cpp.

References llvm::SDValue::getValueType(), llvm::EVT::isVector(), N, llvm::None, and PerformADDCombineWithOperands().

PerformADDCombineWithOperands()

static SDValue PerformADDCombineWithOperands ( SDNode *  N, SDValue  N0, SDValue  N1, TargetLowering::DAGCombinerInfo &  DCI  )

static

PerformADDCombineWithOperands - Try DAG combinations for an ADD with operands N0 and N1.

This is a helper for PerformADDCombine that is called with the default operands, and if that fails, with commuted operands.

Definition at line 4434 of file NVPTXISelLowering.cpp.

References llvm::TargetLowering::DAGCombinerInfo::DAG, llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), llvm::SDNode::getOperand(), llvm::SelectionDAG::getSelect(), llvm::SDValue::getValueType(), llvm::SDNode::hasOneUse(), llvm::NVPTXISD::IMAD, isConstZero(), llvm::ISD::MUL, N, and llvm::ISD::SELECT.

PerformANDCombine()

static SDValue PerformANDCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 4620 of file NVPTXISelLowering.cpp.

References llvm::ISD::ANY_EXTEND, llvm::NVPTXISD::BFE, llvm::TargetLowering::DAGCombinerInfo::CombineTo(), llvm::TargetLowering::DAGCombinerInfo::DAG, llvm::SDNode::getConstantOperandVal(), llvm::MemSDNode::getMemoryVT(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDNode::getNumOperands(), llvm::SDValue::getOpcode(), llvm::SDNode::getOpcode(), llvm::SDValue::getOperand(), llvm::SDNode::getOperand(), llvm::SDValue::getValueType(), llvm::ConstantSDNode::getZExtValue(), llvm::NVPTXISD::LoadV2, llvm::NVPTXISD::LoadV4, N, llvm::ISD::SEXTLOAD, std::swap(), llvm::ISD::TRUNCATE, and llvm::ISD::ZERO_EXTEND.

PerformBUILD_VECTORCombine()

static SDValue PerformBUILD_VECTORCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 5108 of file NVPTXISelLowering.cpp.

References assert(), llvm::ISD::BITCAST, llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::TargetLowering::DAGCombinerInfo::isAfterLegalizeDAG(), llvm::Isv2x16VT(), N, llvm::NVPTX::PTXPrmtMode::NONE, llvm::NVPTXISD::PRMT, llvm::ISD::SRL, and llvm::ISD::TRUNCATE.

PerformEXTRACTCombine()

static SDValue PerformEXTRACTCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 5023 of file NVPTXISelLowering.cpp.

References llvm::ISD::allOperandsUndef(), llvm::ISD::ANY_EXTEND, llvm::ISD::BITCAST, llvm::EVT::changeTypeToInteger(), llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::ISD::FREEZE, llvm::SelectionDAG::getConstant(), llvm::MVT::getIntegerVT(), llvm::SelectionDAG::getNode(), llvm::EVT::getScalarSizeInBits(), llvm::EVT::getSimpleVT(), llvm::EVT::getSizeInBits(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorNumElements(), IsPTXVectorType(), llvm::EVT::isSimple(), llvm::Isv2x16VT(), llvm::ISD::LOAD, N, llvm::ISD::SRA, llvm::ISD::TRUNCATE, and llvm::Vector.

PerformFADDCombine()

static SDValue PerformFADDCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI, CodeGenOptLevel  OptLevel  )

static

PerformFADDCombine - Target-specific dag combine xforms for ISD::FADD.

Definition at line 4602 of file NVPTXISelLowering.cpp.

References llvm::SDValue::getValueType(), llvm::EVT::isVector(), N, and PerformFADDCombineWithOperands().

PerformFADDCombineWithOperands()

static SDValue PerformFADDCombineWithOperands ( SDNode *  N, SDValue  N0, SDValue  N1, TargetLowering::DAGCombinerInfo &  DCI, CodeGenOptLevel  OptLevel  )

static

Definition at line 4478 of file NVPTXISelLowering.cpp.

References llvm::TargetLowering::DAGCombinerInfo::DAG, llvm::ISD::FADD, llvm::ISD::FMA, llvm::ISD::FMUL, llvm::SDNode::getIROrder(), llvm::SelectionDAG::getMachineFunction(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::SDValue::getValueType(), N, and llvm::SDNode::users().

Referenced by PerformFADDCombine().

PerformMULCombine()

static SDValue PerformMULCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI, CodeGenOptLevel  OptLevel  )

static

PerformMULCombine - Runs PTX-specific DAG combine patterns on MUL nodes.

Definition at line 4969 of file NVPTXISelLowering.cpp.

References N, llvm::None, PerformMULCombineWithOperands(), and TryMULWIDECombine().

PerformMULCombineWithOperands()

static SDValue PerformMULCombineWithOperands ( SDNode *  N, SDValue  N0, SDValue  N1, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 4941 of file NVPTXISelLowering.cpp.

References combineMADConstOne(), combineMulSelectConstOne(), DL, llvm::SDValue::getValueType(), llvm::EVT::isVector(), and N.

Referenced by PerformMULCombine().

PerformREMCombine()

static SDValue PerformREMCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI, CodeGenOptLevel  OptLevel  )

static

Definition at line 4715 of file NVPTXISelLowering.cpp.

References assert(), llvm::TargetLowering::DAGCombinerInfo::DAG, llvm::Default, DL, llvm::SelectionDAG::getNode(), llvm::ISD::MUL, N, llvm::ISD::SDIV, llvm::ISD::SREM, llvm::ISD::SUB, llvm::ISD::UDIV, llvm::ISD::UREM, and llvm::SDNode::users().

PerformSETCCCombine()

static SDValue PerformSETCCCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI, unsigned int  SmVersion  )

static

Definition at line 4996 of file NVPTXISelLowering.cpp.

References A, B, llvm::ISD::BUILD_VECTOR, llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::SelectionDAG::getNode(), llvm::SDValue::getValue(), llvm::SelectionDAG::getVTList(), N, llvm::NVPTXISD::SETP_BF16X2, llvm::NVPTXISD::SETP_F16X2, and SmVersion.

PerformSHLCombine()

static SDValue PerformSHLCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI, CodeGenOptLevel  OptLevel  )

static

PerformSHLCombine - Runs PTX-specific DAG combine patterns on SHL nodes.

Definition at line 4984 of file NVPTXISelLowering.cpp.

References N, llvm::None, and TryMULWIDECombine().

PerformStoreCombineHelper()

static SDValue PerformStoreCombineHelper ( SDNode *  N, std::size_t  Front, std::size_t  Back  )

static

Definition at line 4554 of file NVPTXISelLowering.cpp.

References llvm::all_of(), and N.

Referenced by PerformStoreParamCombine(), and PerformStoreRetvalCombine().

PerformStoreParamCombine()

static SDValue PerformStoreParamCombine ( SDNode *  N )

static

Definition at line 4565 of file NVPTXISelLowering.cpp.

References N, and PerformStoreCombineHelper().

PerformStoreRetvalCombine()

static SDValue PerformStoreRetvalCombine ( SDNode *  N )

static

Definition at line 4571 of file NVPTXISelLowering.cpp.

References N, and PerformStoreCombineHelper().

PerformVSELECTCombine()

static SDValue PerformVSELECTCombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI  )

static

Definition at line 5075 of file NVPTXISelLowering.cpp.

References llvm::ISD::BUILD_VECTOR, llvm::CallingConv::C, llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::ISD::EXTRACT_VECTOR_ELT, llvm::SelectionDAG::getAnyExtOrTrunc(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getValueType(), I, N, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::ISD::SELECT.

PromoteScalarIntegerPTX()

static bool PromoteScalarIntegerPTX ( const EVT &  VT, MVT *  PromotedVT  )

static

PromoteScalarIntegerPTX Used to make sure the arguments/returns are suitable for passing and promote them to a larger size if they're not.

The promoted type is placed in PromoteVT if the function returns true.

Definition at line 325 of file NVPTXISelLowering.cpp.

References llvm::EVT::getFixedSizeInBits(), llvm::EVT::isScalarInteger(), llvm_unreachable, and llvm::PowerOf2Ceil().

Referenced by llvm::NVPTXTargetLowering::LowerCall(), llvm::NVPTXTargetLowering::LowerFormalArguments(), and llvm::NVPTXTargetLowering::LowerReturn().

ReplaceBITCAST()

static void ReplaceBITCAST ( SDNode *  Node, SelectionDAG &  DAG, SmallVectorImpl< SDValue > &  Results  )

static

Definition at line 5205 of file NVPTXISelLowering.cpp.

References llvm::ISD::BUILD_VECTOR, DL, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), MaybeBitcast(), Results, llvm::ISD::SRL, and llvm::ISD::TRUNCATE.

ReplaceCopyFromReg_128()

static void ReplaceCopyFromReg_128 ( SDNode *  N, SelectionDAG &  DAG, SmallVectorImpl< SDValue > &  Results  )

static

Definition at line 5433 of file NVPTXISelLowering.cpp.

References assert(), llvm::ISD::BUILD_PAIR, llvm::ISD::CopyFromReg, DL, llvm::SelectionDAG::getNode(), llvm::SDValue::getValue(), N, and Results.

ReplaceINTRINSIC_W_CHAIN()

static void ReplaceINTRINSIC_W_CHAIN ( SDNode *  N, SelectionDAG &  DAG, SmallVectorImpl< SDValue > &  Results  )

static

Definition at line 5324 of file NVPTXISelLowering.cpp.

References llvm::SmallVectorImpl< T >::append(), assert(), DL, llvm::SDNode::getAsZExtVal(), llvm::SelectionDAG::getBuildVector(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::MemSDNode::getMemOperand(), llvm::MemSDNode::getMemoryVT(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::EVT::getSimpleVT(), llvm::EVT::getSizeInBits(), llvm::SDValue::getValue(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorNumElements(), llvm::SelectionDAG::getVTList(), llvm::ISD::INTRINSIC_W_CHAIN, llvm::EVT::isSimple(), llvm::EVT::isVector(), llvm::NVPTXISD::LDUV2, llvm::NVPTXISD::LDUV4, N, llvm::SmallVectorTemplateBase< T, bool >::push_back(), Results, llvm::MVT::SimpleTy, and llvm::ISD::TRUNCATE.

ReplaceLoadVector()

static void ReplaceLoadVector ( SDNode *  N, SelectionDAG &  DAG, SmallVectorImpl< SDValue > &  Results  )

static

ReplaceVectorLoad - Convert vector loads into multi-output scalar loads.

Definition at line 5228 of file NVPTXISelLowering.cpp.

References assert(), DL, llvm::SelectionDAG::ExtractVectorElements(), llvm::SelectionDAG::getBuildVector(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getIntPtrConstant(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getNode(), llvm::DataLayout::getPrefTypeAlign(), llvm::EVT::getSizeInBits(), llvm::SDValue::getValue(), llvm::EVT::getVectorElementType(), getVectorLoweringShape(), llvm::EVT::getVectorNumElements(), llvm::SelectionDAG::getVTList(), llvm::EVT::isVector(), llvm::NVPTXISD::LoadV2, llvm::NVPTXISD::LoadV4, N, llvm::SmallVectorTemplateBase< T, bool >::push_back(), Results, and llvm::ISD::TRUNCATE.

shouldConvertToIndirectCall()

static bool shouldConvertToIndirectCall ( const CallBase *  CB, const GlobalAddressSDNode *  Func  )

static

Definition at line 1383 of file NVPTXISelLowering.cpp.

References llvm::CallBase::getFunctionType().

Referenced by llvm::NVPTXTargetLowering::LowerCall().

TryMULWIDECombine()

static SDValue TryMULWIDECombine ( SDNode *  N, TargetLowering::DAGCombinerInfo &  DCI  )

static

TryMULWIDECombine - Attempt to replace a multiply of M bits with a multiply of M/2 bits that produces an M-bit result (i.e.

mul.wide). This transform works on both multiply DAG nodes and SHL DAG nodes with a constant shift amount.

Definition at line 4818 of file NVPTXISelLowering.cpp.

References AreMulWideOperandsDemotable(), llvm::BitWidth, llvm::TargetLowering::DAGCombinerInfo::DAG, DL, llvm::ConstantSDNode::getAPIntValue(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::EVT::getSizeInBits(), LHS, llvm::ISD::MUL, llvm::NVPTXISD::MUL_WIDE_SIGNED, llvm::NVPTXISD::MUL_WIDE_UNSIGNED, N, RHS, llvm::APInt::sge(), llvm::ISD::SHL, Signed, llvm::APInt::slt(), std::swap(), and llvm::ISD::TRUNCATE.

Referenced by PerformMULCombine(), and PerformSHLCombine().

VectorizePTXValueVTs()

static SmallVector< ParamVectorizationFlags, 16 > VectorizePTXValueVTs ( const SmallVectorImpl< EVT > &  ValueVTs, const SmallVectorImpl< uint64_t > &  Offsets, Align  ParamAlignment, bool  IsVAArg = false  )

static

Definition at line 427 of file NVPTXISelLowering.cpp.

References assert(), llvm::SmallVectorImpl< T >::assign(), CanMergeParamLoadStoresStartingAt(), I, llvm_unreachable, PVF_FIRST, PVF_INNER, PVF_LAST, PVF_SCALAR, and llvm::SmallVectorBase< Size_T >::size().

Referenced by llvm::NVPTXTargetLowering::LowerCall(), llvm::NVPTXTargetLowering::LowerFormalArguments(), and llvm::NVPTXTargetLowering::LowerReturn().

Variable Documentation

FMAContractLevelOpt

cl::opt< unsigned > FMAContractLevelOpt("nvptx-fma-level", cl::Hidden, cl::desc("NVPTX Specific: FMA contraction (0: don't do it" " 1: do it 2: do it aggressively"), cl::init(2)) ( "nvptx-fma-level"  , cl::Hidden    )

static

Referenced by llvm::NVPTXTargetLowering::allowFMA().

ForceMinByValParamAlign

cl::opt< bool > ForceMinByValParamAlign("nvptx-force-min-byval-param-align", cl::Hidden, cl::desc("NVPTX Specific: force 4-byte minimal alignment for byval" " params of device functions."), cl::init(false)) ( "nvptx-force-min-byval-param-align"  , cl::Hidden  , cl::desc("NVPTX Specific: force 4-byte minimal alignment for byval" " params of device functions.")  , cl::init(false)    )

static

Referenced by llvm::NVPTXTargetLowering::getFunctionByValParamAlign().

GlobalUniqueCallSite

std::atomic<unsigned> GlobalUniqueCallSite

static

Definition at line 74 of file NVPTXISelLowering.cpp.

Referenced by llvm::NVPTXTargetLowering::LowerCall().

sched4reg

cl::opt< bool > sched4reg("nvptx-sched4reg", cl::desc("NVPTX Specific: schedule for register pressue"), cl::init(false)) ( "nvptx-sched4reg"  , cl::desc("NVPTX Specific: schedule for register pressue")  , cl::init(false)    )

static

Referenced by llvm::NVPTXTargetLowering::NVPTXTargetLowering().

UsePrecDivF32

cl::opt< int > UsePrecDivF32("nvptx-prec-divf32", cl::Hidden, cl::desc("NVPTX Specifies: 0 use div.approx, 1 use div.full, 2 use" " IEEE Compliant F32 div.rnd if available."), cl::init(2)) ( "nvptx-prec-divf32"  , cl::Hidden  , cl::desc("NVPTX Specifies: 0 use div.approx, 1 use div.full, 2 use" " IEEE Compliant F32 div.rnd if available.")  , cl::init(2)    )

static

Referenced by llvm::NVPTXTargetLowering::getDivF32Level().

UsePrecSqrtF32

cl::opt< bool > UsePrecSqrtF32("nvptx-prec-sqrtf32", cl::Hidden, cl::desc("NVPTX Specific: 0 use sqrt.approx, 1 use sqrt.rn."), cl::init(true)) ( "nvptx-prec-sqrtf32"  , cl::Hidden  , cl::desc("NVPTX Specific: 0 use sqrt.approx, 1 use sqrt.rn.")  , cl::init(true)    )

static

Referenced by llvm::NVPTXTargetLowering::usePrecSqrtF32().