MipsSEISelLowering.cpp File Reference

#include "MipsSEISelLowering.h"
#include "MipsMachineFunction.h"
#include "MipsRegisterInfo.h"
#include "MipsSubtarget.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/ISDOpcodes.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/MachineValueType.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicsMips.h"
#include "llvm/Support/Casting.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/TargetParser/Triple.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <iterator>
#include <utility>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "mips-isel"

Functions
static SDValue	performANDCombine (SDNode *N, SelectionDAG &DAG, TargetLowering::DAGCombinerInfo &DCI, const MipsSubtarget &Subtarget)
static bool	isVSplat (SDValue N, APInt &Imm, bool IsLittleEndian)
static bool	isVectorAllOnes (SDValue N)
static bool	isBitwiseInverse (SDValue N, SDValue OfNode)
static SDValue	performORCombine (SDNode *N, SelectionDAG &DAG, TargetLowering::DAGCombinerInfo &DCI, const MipsSubtarget &Subtarget)
static bool	shouldTransformMulToShiftsAddsSubs (APInt C, EVT VT, SelectionDAG &DAG, const MipsSubtarget &Subtarget)
static SDValue	genConstMult (SDValue X, APInt C, const SDLoc &DL, EVT VT, EVT ShiftTy, SelectionDAG &DAG)
static SDValue	performMULCombine (SDNode *N, SelectionDAG &DAG, const TargetLowering::DAGCombinerInfo &DCI, const MipsSETargetLowering *TL, const MipsSubtarget &Subtarget)
static SDValue	performDSPShiftCombine (unsigned Opc, SDNode *N, EVT Ty, SelectionDAG &DAG, const MipsSubtarget &Subtarget)
static SDValue	performSHLCombine (SDNode *N, SelectionDAG &DAG, TargetLowering::DAGCombinerInfo &DCI, const MipsSubtarget &Subtarget)
static SDValue	performSRACombine (SDNode *N, SelectionDAG &DAG, TargetLowering::DAGCombinerInfo &DCI, const MipsSubtarget &Subtarget)
static SDValue	performSRLCombine (SDNode *N, SelectionDAG &DAG, TargetLowering::DAGCombinerInfo &DCI, const MipsSubtarget &Subtarget)
static bool	isLegalDSPCondCode (EVT Ty, ISD::CondCode CC)
static SDValue	performSETCCCombine (SDNode *N, SelectionDAG &DAG)
static SDValue	performVSELECTCombine (SDNode *N, SelectionDAG &DAG)
static SDValue	performXORCombine (SDNode *N, SelectionDAG &DAG, const MipsSubtarget &Subtarget)
static SDValue	initAccumulator (SDValue In, const SDLoc &DL, SelectionDAG &DAG)
static SDValue	extractLOHI (SDValue Op, const SDLoc &DL, SelectionDAG &DAG)
static SDValue	lowerDSPIntr (SDValue Op, SelectionDAG &DAG, unsigned Opc)
static SDValue	lowerMSACopyIntr (SDValue Op, SelectionDAG &DAG, unsigned Opc)
static SDValue	lowerMSASplatZExt (SDValue Op, unsigned OpNr, SelectionDAG &DAG)
static SDValue	lowerMSASplatImm (SDValue Op, unsigned ImmOp, SelectionDAG &DAG, bool IsSigned=false)
static SDValue	getBuildVectorSplat (EVT VecTy, SDValue SplatValue, bool BigEndian, SelectionDAG &DAG)
static SDValue	lowerMSABinaryBitImmIntr (SDValue Op, SelectionDAG &DAG, unsigned Opc, SDValue Imm, bool BigEndian)
static SDValue	truncateVecElts (SDValue Op, SelectionDAG &DAG)
static SDValue	lowerMSABitClear (SDValue Op, SelectionDAG &DAG)
static SDValue	lowerMSABitClearImm (SDValue Op, SelectionDAG &DAG)
static SDValue	lowerMSALoadIntr (SDValue Op, SelectionDAG &DAG, unsigned Intr, const MipsSubtarget &Subtarget)
static SDValue	lowerMSAStoreIntr (SDValue Op, SelectionDAG &DAG, unsigned Intr, const MipsSubtarget &Subtarget)
static bool	isConstantOrUndef (const SDValue Op)
static bool	isConstantOrUndefBUILD_VECTOR (const BuildVectorSDNode *Op)
static SDValue	lowerVECTOR_SHUFFLE_SHF (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
template<typename ValType >
static bool	fitsRegularPattern (typename SmallVectorImpl< ValType >::const_iterator Begin, unsigned CheckStride, typename SmallVectorImpl< ValType >::const_iterator End, ValType ExpectedIndex, unsigned ExpectedIndexStride)
	Determine whether a range fits a regular pattern of values.
static bool	isVECTOR_SHUFFLE_SPLATI (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_ILVEV (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_ILVOD (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_ILVR (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_ILVL (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_PCKEV (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_PCKOD (SDValue Op, EVT ResTy, SmallVector< int, 16 > Indices, SelectionDAG &DAG)
static SDValue	lowerVECTOR_SHUFFLE_VSHF (SDValue Op, EVT ResTy, const SmallVector< int, 16 > &Indices, SelectionDAG &DAG)

Variables
static cl::opt< bool >	UseMipsTailCalls ("mips-tail-calls", cl::Hidden, cl::desc("MIPS: permit tail calls."), cl::init(false))
static cl::opt< bool >	NoDPLoadStore ("mno-ldc1-sdc1", cl::init(false), cl::desc("Expand double precision loads and " "stores to their single precision " "counterparts"))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "mips-isel"

Definition at line 53 of file MipsSEISelLowering.cpp.

Function Documentation

extractLOHI()

static SDValue extractLOHI ( SDValue  Op, const SDLoc &  DL, SelectionDAG &  DAG  )

static

Definition at line 1284 of file MipsSEISelLowering.cpp.

References llvm::ISD::BUILD_PAIR, DL, llvm::SelectionDAG::getNode(), llvm::Hi, llvm::Lo, llvm::MipsISD::MFHI, and llvm::MipsISD::MFLO.

Referenced by lowerDSPIntr().

fitsRegularPattern()

template<typename ValType >

static bool fitsRegularPattern ( typename SmallVectorImpl< ValType >::const_iterator  Begin, unsigned  CheckStride, typename SmallVectorImpl< ValType >::const_iterator  End, ValType  ExpectedIndex, unsigned  ExpectedIndexStride  )

static

Determine whether a range fits a regular pattern of values.

This function accounts for the possibility of jumping over the End iterator.

Definition at line 2596 of file MipsSEISelLowering.cpp.

References End, and I.

genConstMult()

static SDValue genConstMult ( SDValue  X, APInt  C, const SDLoc &  DL, EVT  VT, EVT  ShiftTy, SelectionDAG &  DAG  )

static

Definition at line 786 of file MipsSEISelLowering.cpp.

References llvm::ISD::ADD, llvm::BitWidth, llvm::CallingConv::C, DL, genConstMult(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::ISD::SHL, llvm::ISD::SUB, and X.

Referenced by genConstMult(), and performMULCombine().

getBuildVectorSplat()

static SDValue getBuildVectorSplat ( EVT  VecTy, SDValue  SplatValue, bool  BigEndian, SelectionDAG &  DAG  )

static

Definition at line 1416 of file MipsSEISelLowering.cpp.

References llvm::ISD::BITCAST, DL, llvm::SelectionDAG::getBuildVector(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::EVT::getVectorNumElements(), llvm::ISD::SRL, std::swap(), and llvm::ISD::TRUNCATE.

Referenced by lowerMSABinaryBitImmIntr(), and truncateVecElts().

initAccumulator()

static SDValue initAccumulator ( SDValue  In, const SDLoc &  DL, SelectionDAG &  DAG  )

static

Definition at line 1278 of file MipsSEISelLowering.cpp.

References DL, llvm::SelectionDAG::getNode(), llvm::MipsISD::MTLOHI, and llvm::SelectionDAG::SplitScalar().

Referenced by lowerDSPIntr().

isBitwiseInverse()

static bool isBitwiseInverse ( SDValue  N, SDValue  OfNode  )

static

Definition at line 571 of file MipsSEISelLowering.cpp.

References isVectorAllOnes(), N, and llvm::ISD::XOR.

Referenced by performORCombine().

isConstantOrUndef()

static bool isConstantOrUndef ( const SDValue  Op )

static

Definition at line 2418 of file MipsSEISelLowering.cpp.

Referenced by isConstantOrUndefBUILD_VECTOR(), isVMerge(), llvm::PPC::isVPKUDUMShuffleMask(), llvm::PPC::isVPKUHUMShuffleMask(), llvm::PPC::isVPKUWUMShuffleMask(), and llvm::PPC::isVSLDOIShuffleMask().

isConstantOrUndefBUILD_VECTOR()

static bool isConstantOrUndefBUILD_VECTOR ( const BuildVectorSDNode *  Op )

static

Definition at line 2428 of file MipsSEISelLowering.cpp.

References llvm::DWARFExpression::Operation::getNumOperands(), and isConstantOrUndef().

isLegalDSPCondCode()

static bool isLegalDSPCondCode ( EVT  Ty, ISD::CondCode  CC  )

static

Definition at line 943 of file MipsSEISelLowering.cpp.

References CC, 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 performSETCCCombine().

isVECTOR_SHUFFLE_SPLATI()

static bool isVECTOR_SHUFFLE_SPLATI ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2623 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), and llvm::SmallVectorBase< Size_T >::size().

isVectorAllOnes()

static bool isVectorAllOnes ( SDValue  N )

static

Definition at line 547 of file MipsSEISelLowering.cpp.

References llvm::ISD::BITCAST, llvm::APInt::isAllOnes(), llvm::BuildVectorSDNode::isConstantSplat(), and N.

Referenced by isBitwiseInverse().

isVSplat()

static bool isVSplat ( SDValue  N, APInt &  Imm, bool  IsLittleEndian  )

static

Definition at line 527 of file MipsSEISelLowering.cpp.

References N.

Referenced by performORCombine().

lowerDSPIntr()

static SDValue lowerDSPIntr ( SDValue  Op, SelectionDAG &  DAG, unsigned  Opc  )

static

Definition at line 1302 of file MipsSEISelLowering.cpp.

References assert(), DL, extractLOHI(), llvm::SelectionDAG::getMergeValues(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::DWARFExpression::Operation::getNumOperands(), llvm::SDValue::getValueType(), llvm::SDNode::getValueType(), initAccumulator(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::ISD::TargetConstant.

lowerMSABinaryBitImmIntr()

static SDValue lowerMSABinaryBitImmIntr ( SDValue  Op, SelectionDAG &  DAG, unsigned  Opc, SDValue  Imm, bool  BigEndian  )

static

Definition at line 1452 of file MipsSEISelLowering.cpp.

References llvm::ISD::BITCAST, DL, llvm::SelectionDAG::getBuildVector(), getBuildVectorSplat(), llvm::SelectionDAG::getConstant(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::APInt::lshr(), llvm::ISD::SHL, std::swap(), llvm::APInt::trunc(), and llvm::ISD::ZERO_EXTEND.

lowerMSABitClear()

static SDValue lowerMSABitClear ( SDValue  Op, SelectionDAG &  DAG  )

static

Definition at line 1509 of file MipsSEISelLowering.cpp.

References llvm::ISD::AND, DL, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNOT(), llvm::ISD::SHL, and truncateVecElts().

lowerMSABitClearImm()

static SDValue lowerMSABitClearImm ( SDValue  Op, SelectionDAG &  DAG  )

static

Definition at line 1519 of file MipsSEISelLowering.cpp.

References llvm::ISD::AND, DL, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), and llvm::EVT::getScalarSizeInBits().

lowerMSACopyIntr()

static SDValue lowerMSACopyIntr ( SDValue  Op, SelectionDAG &  DAG, unsigned  Opc  )

static

Definition at line 1350 of file MipsSEISelLowering.cpp.

References DL, llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getValueType(), llvm::SDNode::getValueType(), llvm::EVT::getVectorElementType(), and Idx.

lowerMSALoadIntr()

static SDValue lowerMSALoadIntr ( SDValue  Op, SelectionDAG &  DAG, unsigned  Intr, const MipsSubtarget &  Subtarget  )

static

Definition at line 2282 of file MipsSEISelLowering.cpp.

References llvm::ISD::ADD, llvm::Address, DL, llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getNode(), llvm::MipsSubtarget::isABI_N64(), llvm::Offset, and llvm::ISD::SIGN_EXTEND.

lowerMSASplatImm()

static SDValue lowerMSASplatImm ( SDValue  Op, unsigned  ImmOp, SelectionDAG &  DAG, bool  IsSigned = false  )

static

Definition at line 1407 of file MipsSEISelLowering.cpp.

References llvm::SelectionDAG::getConstant().

lowerMSASplatZExt()

static SDValue lowerMSASplatZExt ( SDValue  Op, unsigned  OpNr, SelectionDAG &  DAG  )

static

Definition at line 1363 of file MipsSEISelLowering.cpp.

References llvm::ISD::AND, llvm::ISD::BITCAST, DL, llvm::SelectionDAG::getBuildVector(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getSubtarget(), llvm::MCSubtargetInfo::getTargetTriple(), llvm::EVT::getVectorNumElements(), llvm::Triple::isLittleEndian(), and std::swap().

lowerMSAStoreIntr()

static SDValue lowerMSAStoreIntr ( SDValue  Op, SelectionDAG &  DAG, unsigned  Intr, const MipsSubtarget &  Subtarget  )

static

Definition at line 2356 of file MipsSEISelLowering.cpp.

References llvm::ISD::ADD, llvm::Address, DL, llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getStore(), llvm::MipsSubtarget::isABI_N64(), llvm::Offset, and llvm::ISD::SIGN_EXTEND.

lowerVECTOR_SHUFFLE_ILVEV()

static SDValue lowerVECTOR_SHUFFLE_ILVEV ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2655 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, llvm::SelectionDAG::getNode(), llvm::MipsISD::ILVEV, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_ILVL()

static SDValue lowerVECTOR_SHUFFLE_ILVL ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2795 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, llvm::SelectionDAG::getNode(), llvm::MipsISD::ILVL, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_ILVOD()

static SDValue lowerVECTOR_SHUFFLE_ILVOD ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2701 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, llvm::SelectionDAG::getNode(), llvm::MipsISD::ILVOD, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_ILVR()

static SDValue lowerVECTOR_SHUFFLE_ILVR ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2748 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, llvm::SelectionDAG::getNode(), llvm::MipsISD::ILVR, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_PCKEV()

static SDValue lowerVECTOR_SHUFFLE_PCKEV ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2843 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, llvm::SelectionDAG::getNode(), llvm::MipsISD::PCKEV, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_PCKOD()

static SDValue lowerVECTOR_SHUFFLE_PCKOD ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2886 of file MipsSEISelLowering.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, llvm::SelectionDAG::getNode(), llvm::MipsISD::PCKOD, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_SHF()

static SDValue lowerVECTOR_SHUFFLE_SHF ( SDValue  Op, EVT  ResTy, SmallVector< int, 16 >  Indices, SelectionDAG &  DAG  )

static

Definition at line 2542 of file MipsSEISelLowering.cpp.

References DL, llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getTargetConstant(), Idx, llvm::MipsISD::SHF, and llvm::SmallVectorBase< Size_T >::size().

lowerVECTOR_SHUFFLE_VSHF()

static SDValue lowerVECTOR_SHUFFLE_VSHF ( SDValue  Op, EVT  ResTy, const SmallVector< int, 16 > &  Indices, SelectionDAG &  DAG  )

static

Definition at line 2922 of file MipsSEISelLowering.cpp.

References llvm::EVT::changeVectorElementTypeToInteger(), DL, llvm::SelectionDAG::getBuildVector(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getTargetConstant(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorNumElements(), Idx, llvm_unreachable, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::MipsISD::VSHF.

performANDCombine()

static SDValue performANDCombine ( SDNode *  N, SelectionDAG &  DAG, TargetLowering::DAGCombinerInfo &  DCI, const MipsSubtarget &  Subtarget  )

static

Definition at line 475 of file MipsSEISelLowering.cpp.

References llvm::SelectionDAG::getNode(), llvm::SDNode::getNumOperands(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::EVT::getSizeInBits(), llvm::SDNode::getVTList(), llvm::MipsSubtarget::hasMSA(), llvm::Log2(), N, llvm::MipsISD::VEXTRACT_SEXT_ELT, and llvm::MipsISD::VEXTRACT_ZEXT_ELT.

performDSPShiftCombine()

static SDValue performDSPShiftCombine ( unsigned  Opc, SDNode *  N, EVT  Ty, SelectionDAG &  DAG, const MipsSubtarget &  Subtarget  )

static

Definition at line 838 of file MipsSEISelLowering.cpp.

References DL, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::EVT::getScalarSizeInBits(), llvm::APInt::getZExtValue(), llvm::MipsSubtarget::hasDSP(), llvm::BuildVectorSDNode::isConstantSplat(), llvm::MipsSubtarget::isLittle(), and N.

Referenced by performSHLCombine(), performSRACombine(), and performSRLCombine().

performMULCombine()

static SDValue performMULCombine ( SDNode *  N, SelectionDAG &  DAG, const TargetLowering::DAGCombinerInfo &  DCI, const MipsSETargetLowering *  TL, const MipsSubtarget &  Subtarget  )

static

Definition at line 822 of file MipsSEISelLowering.cpp.

References llvm::CallingConv::C, genConstMult(), llvm::SelectionDAG::getDataLayout(), llvm::MipsTargetLowering::getScalarShiftAmountTy(), llvm::EVT::isVector(), N, and shouldTransformMulToShiftsAddsSubs().

Referenced by llvm::MipsSETargetLowering::PerformDAGCombine(), and llvm::RISCVTargetLowering::PerformDAGCombine().

performORCombine()

static SDValue performORCombine ( SDNode *  N, SelectionDAG &  DAG, TargetLowering::DAGCombinerInfo &  DCI, const MipsSubtarget &  Subtarget  )

static

Definition at line 590 of file MipsSEISelLowering.cpp.

References llvm::ISD::AND, assert(), Cond, llvm::APInt::getBitWidth(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::MipsSubtarget::hasMSA(), llvm::EVT::is128BitVector(), isBitwiseInverse(), llvm::MipsSubtarget::isLittle(), isVSplat(), N, and llvm::ISD::VSELECT.

performSETCCCombine()

static SDValue performSETCCCombine ( SDNode *  N, SelectionDAG &  DAG  )

static

Definition at line 961 of file MipsSEISelLowering.cpp.

References llvm::SelectionDAG::getNode(), isLegalDSPCondCode(), N, and llvm::MipsISD::SETCC_DSP.

performSHLCombine()

static SDValue performSHLCombine ( SDNode *  N, SelectionDAG &  DAG, TargetLowering::DAGCombinerInfo &  DCI, const MipsSubtarget &  Subtarget  )

static

Definition at line 863 of file MipsSEISelLowering.cpp.

References N, performDSPShiftCombine(), and llvm::MipsISD::SHLL_DSP.

performSRACombine()

static SDValue performSRACombine ( SDNode *  N, SelectionDAG &  DAG, TargetLowering::DAGCombinerInfo &  DCI, const MipsSubtarget &  Subtarget  )

static

Definition at line 886 of file MipsSEISelLowering.cpp.

References llvm::SelectionDAG::getNode(), llvm::SDNode::getNumOperands(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::EVT::getSizeInBits(), llvm::SDNode::getVTList(), llvm::ConstantSDNode::getZExtValue(), llvm::MipsSubtarget::hasDSPR2(), llvm::MipsSubtarget::hasMSA(), N, performDSPShiftCombine(), llvm::ISD::SHL, llvm::MipsISD::SHRA_DSP, llvm::MipsISD::VEXTRACT_SEXT_ELT, and llvm::MipsISD::VEXTRACT_ZEXT_ELT.

Referenced by llvm::MipsSETargetLowering::PerformDAGCombine(), and llvm::RISCVTargetLowering::PerformDAGCombine().

performSRLCombine()

static SDValue performSRLCombine ( SDNode *  N, SelectionDAG &  DAG, TargetLowering::DAGCombinerInfo &  DCI, const MipsSubtarget &  Subtarget  )

static

Definition at line 932 of file MipsSEISelLowering.cpp.

References llvm::MipsSubtarget::hasDSPR2(), N, performDSPShiftCombine(), and llvm::MipsISD::SHRL_DSP.

performVSELECTCombine()

static SDValue performVSELECTCombine ( SDNode *  N, SelectionDAG &  DAG  )

static

Definition at line 974 of file MipsSEISelLowering.cpp.

References llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SDValue::getOperand(), N, llvm::MipsISD::SELECT_CC_DSP, and llvm::MipsISD::SETCC_DSP.

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

performXORCombine()

static SDValue performXORCombine ( SDNode *  N, SelectionDAG &  DAG, const MipsSubtarget &  Subtarget  )

static

Definition at line 991 of file MipsSEISelLowering.cpp.

References llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDNode::getOpcode(), llvm::SDNode::getOperand(), llvm::MipsSubtarget::hasMSA(), llvm::EVT::is128BitVector(), llvm::ISD::isBuildVectorAllOnes(), llvm::EVT::isInteger(), N, llvm::ISD::OR, and llvm::MipsISD::VNOR.

Referenced by llvm::MipsSETargetLowering::PerformDAGCombine(), and llvm::RISCVTargetLowering::PerformDAGCombine().

shouldTransformMulToShiftsAddsSubs()

static bool shouldTransformMulToShiftsAddsSubs ( APInt  C, EVT  VT, SelectionDAG &  DAG, const MipsSubtarget &  Subtarget  )

static

Definition at line 710 of file MipsSEISelLowering.cpp.

References llvm::BitWidth, llvm::CallingConv::C, llvm::SmallVectorBase< Size_T >::empty(), llvm::SelectionDAG::getContext(), llvm::TargetLoweringBase::getRegisterType(), llvm::MVT::getSizeInBits(), llvm::EVT::getSizeInBits(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::MipsSubtarget::isABI_O32(), llvm::APInt::isNegative(), llvm::APInt::isPowerOf2(), llvm::APInt::logBase2(), llvm::SmallVectorImpl< T >::pop_back_val(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by performMULCombine().

truncateVecElts()

static SDValue truncateVecElts ( SDValue  Op, SelectionDAG &  DAG  )

static

Definition at line 1496 of file MipsSEISelLowering.cpp.

References llvm::ISD::AND, DL, getBuildVectorSplat(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getScalarValueSizeInBits(), llvm::SelectionDAG::getSubtarget(), llvm::MCSubtargetInfo::getTargetTriple(), and llvm::Triple::isLittleEndian().

Variable Documentation

NoDPLoadStore

cl::opt< bool > NoDPLoadStore("mno-ldc1-sdc1", cl::init(false), cl::desc("Expand double precision loads and " "stores to their single precision " "counterparts")) ( "mno-ldc1-sdc1"  , cl::init(false)  , cl::desc("Expand double precision loads and " "stores to their single precision " "counterparts")    )

static

Referenced by llvm::MipsSETargetLowering::MipsSETargetLowering().

UseMipsTailCalls

cl::opt< bool > UseMipsTailCalls("mips-tail-calls", cl::Hidden, cl::desc("MIPS: permit tail calls."), cl::init(false)) ( "mips-tail-calls"  , cl::Hidden  , cl::desc("MIPS: permit tail calls.")  , cl::init(false)    )

static