SelectionDAG.cpp File Reference

#include "llvm/CodeGen/SelectionDAG.h"
#include "SDNodeDbgValue.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/MemoryLocation.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Analysis/VectorUtils.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/CodeGen/Analysis.h"
#include "llvm/CodeGen/FunctionLoweringInfo.h"
#include "llvm/CodeGen/ISDOpcodes.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/RuntimeLibcallUtil.h"
#include "llvm/CodeGen/SDPatternMatch.h"
#include "llvm/CodeGen/SelectionDAGAddressAnalysis.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/Transforms/Utils/SizeOpts.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <cstdlib>
#include <limits>
#include <optional>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "llvm/IR/VPIntrinsics.def"
#include "llvm/IR/ConstrainedOps.def"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "selectiondag"
#define	BEGIN_REGISTER_VP_SDNODE(VPSD, ...)
#define	BEGIN_REGISTER_VP_SDNODE(VPSD, ...)
#define	VP_PROPERTY_BINARYOP   return true;
#define	END_REGISTER_VP_SDNODE(VPSD)
#define	BEGIN_REGISTER_VP_SDNODE(VPSD, LEGALPOS, TDNAME, MASKPOS, ...)
#define	BEGIN_REGISTER_VP_SDNODE(VPSD, LEGALPOS, TDNAME, MASKPOS, EVLPOS)
#define	BEGIN_REGISTER_VP_SDNODE(VPOPC, ...)
#define	VP_PROPERTY_FUNCTIONAL_SDOPC(SDOPC)
#define	END_REGISTER_VP_SDNODE(VPOPC)
#define	BEGIN_REGISTER_VP_SDNODE(VPOPC, ...)
#define	VP_PROPERTY_FUNCTIONAL_SDOPC(SDOPC)
#define	END_REGISTER_VP_SDNODE(VPOPC)
#define	DAG_INSTRUCTION(NAME, NARG, ROUND_MODE, INTRINSIC, DAGN)
#define	CMP_INSTRUCTION(NAME, NARG, ROUND_MODE, INTRINSIC, DAGN)

Functions
static SDVTList	makeVTList (const EVT *VTs, unsigned NumVTs)
	makeVTList - Return an instance of the SDVTList struct initialized with the specified members.
static void	NewSDValueDbgMsg (SDValue V, StringRef Msg, SelectionDAG *G)
static ISD::CondCode	getSetCCInverseImpl (ISD::CondCode Op, bool isIntegerLike)
static int	isSignedOp (ISD::CondCode Opcode)
	For an integer comparison, return 1 if the comparison is a signed operation and 2 if the result is an unsigned comparison.
static void	AddNodeIDOpcode (FoldingSetNodeID &ID, unsigned OpC)
	AddNodeIDOpcode - Add the node opcode to the NodeID data.
static void	AddNodeIDValueTypes (FoldingSetNodeID &ID, SDVTList VTList)
	AddNodeIDValueTypes - Value type lists are intern'd so we can represent them solely with their pointer.
static void	AddNodeIDOperands (FoldingSetNodeID &ID, ArrayRef< SDValue > Ops)
	AddNodeIDOperands - Various routines for adding operands to the NodeID data.
static void	AddNodeIDOperands (FoldingSetNodeID &ID, ArrayRef< SDUse > Ops)
	AddNodeIDOperands - Various routines for adding operands to the NodeID data.
static void	AddNodeIDNode (FoldingSetNodeID &ID, unsigned OpC, SDVTList VTList, ArrayRef< SDValue > OpList)
static void	AddNodeIDCustom (FoldingSetNodeID &ID, const SDNode *N)
	If this is an SDNode with special info, add this info to the NodeID data.
static void	AddNodeIDNode (FoldingSetNodeID &ID, const SDNode *N)
	AddNodeIDNode - Generic routine for adding a nodes info to the NodeID data.
static bool	doNotCSE (SDNode *N)
	doNotCSE - Return true if CSE should not be performed for this node.
static void	commuteShuffle (SDValue &N1, SDValue &N2, MutableArrayRef< int > M)
	Swaps the values of N1 and N2.
static bool	canFoldStoreIntoLibCallOutputPointers (StoreSDNode *StoreNode, SDNode *FPNode)
	Given a store node StoreNode, return true if it is safe to fold that node into FPNode, which expands to a library call with output pointers.
static SelectionDAG::OverflowKind	mapOverflowResult (ConstantRange::OverflowResult OR)
	Convert ConstantRange OverflowResult into SelectionDAG::OverflowKind.
static bool	haveNoCommonBitsSetCommutative (SDValue A, SDValue B)
static SDValue	FoldSTEP_VECTOR (const SDLoc &DL, EVT VT, SDValue Step, SelectionDAG &DAG)
static SDValue	FoldBUILD_VECTOR (const SDLoc &DL, EVT VT, ArrayRef< SDValue > Ops, SelectionDAG &DAG)
static SDValue	foldCONCAT_VECTORS (const SDLoc &DL, EVT VT, ArrayRef< SDValue > Ops, SelectionDAG &DAG)
	Try to simplify vector concatenation to an input value, undef, or build vector.
static std::optional< APInt >	FoldValue (unsigned Opcode, const APInt &C1, const APInt &C2)
static std::optional< APInt >	FoldValueWithUndef (unsigned Opcode, const APInt &C1, bool IsUndef1, const APInt &C2, bool IsUndef2)
static SDValue	getMemsetValue (SDValue Value, EVT VT, SelectionDAG &DAG, const SDLoc &dl)
	getMemsetValue - Vectorized representation of the memset value operand.
static SDValue	getMemsetStringVal (EVT VT, const SDLoc &dl, SelectionDAG &DAG, const TargetLowering &TLI, const ConstantDataArraySlice &Slice)
	getMemsetStringVal - Similar to getMemsetValue.
static bool	isMemSrcFromConstant (SDValue Src, ConstantDataArraySlice &Slice)
	Returns true if memcpy source is constant data.
static bool	shouldLowerMemFuncForSize (const MachineFunction &MF, SelectionDAG &DAG)
static void	chainLoadsAndStoresForMemcpy (SelectionDAG &DAG, const SDLoc &dl, SmallVector< SDValue, 32 > &OutChains, unsigned From, unsigned To, SmallVector< SDValue, 16 > &OutLoadChains, SmallVector< SDValue, 16 > &OutStoreChains)
static SDValue	getMemcpyLoadsAndStores (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src, uint64_t Size, Align Alignment, bool isVol, bool AlwaysInline, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo, const AAMDNodes &AAInfo, BatchAAResults *BatchAA)
static SDValue	getMemmoveLoadsAndStores (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src, uint64_t Size, Align Alignment, bool isVol, bool AlwaysInline, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo, const AAMDNodes &AAInfo)
static SDValue	getMemsetStores (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src, uint64_t Size, Align Alignment, bool isVol, bool AlwaysInline, MachinePointerInfo DstPtrInfo, const AAMDNodes &AAInfo)
	Lower the call to 'memset' intrinsic function into a series of store operations.
static void	checkAddrSpaceIsValidForLibcall (const TargetLowering *TLI, unsigned AS)
static bool	isInTailCallPositionWrapper (const CallInst *CI, const SelectionDAG *SelDAG, bool AllowReturnsFirstArg)
static MachinePointerInfo	InferPointerInfo (const MachinePointerInfo &Info, SelectionDAG &DAG, SDValue Ptr, int64_t Offset=0)
	InferPointerInfo - If the specified ptr/offset is a frame index, infer a MachinePointerInfo record from it.
static MachinePointerInfo	InferPointerInfo (const MachinePointerInfo &Info, SelectionDAG &DAG, SDValue Ptr, SDValue OffsetOp)
	InferPointerInfo - If the specified ptr/offset is a frame index, infer a MachinePointerInfo record from it.
static bool	gluePropagatesDivergence (const SDNode *Node)
	Return true if a glue output should propagate divergence information.
static void	checkForCyclesHelper (const SDNode *N, SmallPtrSetImpl< const SDNode * > &Visited, SmallPtrSetImpl< const SDNode * > &Checked, const llvm::SelectionDAG *DAG)

Variables
static cl::opt< bool >	EnableMemCpyDAGOpt ("enable-memcpy-dag-opt", cl::Hidden, cl::init(true), cl::desc("Gang up loads and stores generated by inlining of memcpy"))
static cl::opt< int >	MaxLdStGlue ("ldstmemcpy-glue-max", cl::desc("Number limit for gluing ld/st of memcpy."), cl::Hidden, cl::init(0))
static cl::opt< unsigned >	MaxSteps ("has-predecessor-max-steps", cl::Hidden, cl::init(8192), cl::desc("DAG combiner limit number of steps when searching DAG " "for predecessor nodes"))

Macro Definition Documentation

BEGIN_REGISTER_VP_SDNODE [1/6]

#define BEGIN_REGISTER_VP_SDNODE	(		VPOPC,
			... )

Value:

case ISD::VPOPC:

BEGIN_REGISTER_VP_SDNODE [2/6]

#define BEGIN_REGISTER_VP_SDNODE	(		VPOPC,
			... )

Value:

break;

BEGIN_REGISTER_VP_SDNODE [3/6]

#define BEGIN_REGISTER_VP_SDNODE	(		VPSD,
			LEGALPOS,
			TDNAME,
			MASKPOS,
			EVLPOS )

Value:

  case ISD::VPSD:                                                              \
    return EVLPOS;

BEGIN_REGISTER_VP_SDNODE [4/6]

#define BEGIN_REGISTER_VP_SDNODE	(		VPSD,
			LEGALPOS,
			TDNAME,
			MASKPOS,
			... )

Value:

  case ISD::VPSD:                                                              \
    return MASKPOS;

BEGIN_REGISTER_VP_SDNODE [5/6]

#define BEGIN_REGISTER_VP_SDNODE	(		VPSD,
			... )

Value:

  case ISD::VPSD:                                                              \
    return true;

BEGIN_REGISTER_VP_SDNODE [6/6]

#define BEGIN_REGISTER_VP_SDNODE	(		VPSD,
			... )

Value:

case ISD::VPSD:

CMP_INSTRUCTION

#define CMP_INSTRUCTION	(		NAME,
			NARG,
			ROUND_MODE,
			INTRINSIC,
			DAGN )

Value:

  case ISD::STRICT_##DAGN: NewOpc = ISD::SETCC; break;

DAG_INSTRUCTION

#define DAG_INSTRUCTION	(		NAME,
			NARG,
			ROUND_MODE,
			INTRINSIC,
			DAGN )

Value:

  case ISD::STRICT_##DAGN: NewOpc = ISD::DAGN; break;

DEBUG_TYPE

#define DEBUG_TYPE   "selectiondag"

Definition at line 102 of file SelectionDAG.cpp.

END_REGISTER_VP_SDNODE [1/3]

#define END_REGISTER_VP_SDNODE

(

VPOPC

)

Value:

break;

END_REGISTER_VP_SDNODE [2/3]

#define END_REGISTER_VP_SDNODE

(

VPOPC

)

Value:

return ISD::VPOPC;

END_REGISTER_VP_SDNODE [3/3]

#define END_REGISTER_VP_SDNODE

(

VPSD

)

Value:

break;

VP_PROPERTY_BINARYOP

#define VP_PROPERTY_BINARYOP   return true;

VP_PROPERTY_FUNCTIONAL_SDOPC [1/2]

#define VP_PROPERTY_FUNCTIONAL_SDOPC

(

SDOPC

)

Value:

return ISD::SDOPC;

VP_PROPERTY_FUNCTIONAL_SDOPC [2/2]

#define VP_PROPERTY_FUNCTIONAL_SDOPC

(

SDOPC

)

Value:

case ISD::SDOPC:

Function Documentation

AddNodeIDCustom()

void AddNodeIDCustom ( FoldingSetNodeID & ID, const SDNode * N )

static

If this is an SDNode with special info, add this info to the NodeID data.

Definition at line 743 of file SelectionDAG.cpp.

References llvm::ISD::AssertAlign, llvm::ISD::BasicBlock, llvm::ISD::BlockAddress, llvm::CallingConv::C, llvm::cast(), llvm::ISD::Constant, llvm::ISD::ConstantFP, llvm::ISD::ConstantPool, llvm::dyn_cast(), llvm::ISD::ExternalSymbol, llvm::ISD::FrameIndex, llvm::MachinePointerInfo::getAddrSpace(), llvm::getAlign(), llvm::SelectionDAG::getBasicBlock(), llvm::BlockAddressSDNode::getBlockAddress(), llvm::AddrSpaceCastSDNode::getDestAddressSpace(), llvm::MachineMemOperand::getFlags(), llvm::GlobalAddressSDNode::getGlobal(), llvm::TargetIndexSDNode::getIndex(), llvm::MemSDNode::getMemOperand(), llvm::MemSDNode::getMemoryVT(), llvm::BlockAddressSDNode::getOffset(), llvm::GlobalAddressSDNode::getOffset(), llvm::TargetIndexSDNode::getOffset(), llvm::MemSDNode::getPointerInfo(), llvm::EVT::getRawBits(), llvm::MemSDNode::getRawSubclassData(), getReg(), llvm::AddrSpaceCastSDNode::getSrcAddressSpace(), llvm::BlockAddressSDNode::getTargetFlags(), llvm::GlobalAddressSDNode::getTargetFlags(), llvm::TargetIndexSDNode::getTargetFlags(), llvm::ISD::GlobalAddress, llvm::ISD::GlobalTLSAddress, llvm::ISD::INTRINSIC_VOID, llvm::ISD::INTRINSIC_W_CHAIN, llvm::ISD::JumpTable, llvm_unreachable, llvm::ISD::MCSymbol, N, llvm::ISD::Register, llvm::ISD::RegisterMask, llvm::ISD::TargetBlockAddress, llvm::ISD::TargetConstant, llvm::ISD::TargetConstantFP, llvm::ISD::TargetConstantPool, llvm::ISD::TargetExternalSymbol, llvm::ISD::TargetFrameIndex, llvm::ISD::TargetGlobalAddress, llvm::ISD::TargetGlobalTLSAddress, llvm::ISD::TargetIndex, llvm::ISD::TargetJumpTable, and llvm::ISD::VECTOR_SHUFFLE.

Referenced by AddNodeIDNode().

AddNodeIDNode() [1/2]

void AddNodeIDNode ( FoldingSetNodeID & ID, const SDNode * N )

static

AddNodeIDNode - Generic routine for adding a nodes info to the NodeID data.

Definition at line 986 of file SelectionDAG.cpp.

References AddNodeIDCustom(), AddNodeIDOpcode(), AddNodeIDOperands(), AddNodeIDValueTypes(), and N.

AddNodeIDNode() [2/2]

void AddNodeIDNode ( FoldingSetNodeID & ID, unsigned OpC, SDVTList VTList, ArrayRef< SDValue > OpList )

static

Definition at line 735 of file SelectionDAG.cpp.

References AddNodeIDOpcode(), AddNodeIDOperands(), and AddNodeIDValueTypes().

Referenced by llvm::SelectionDAG::doesNodeExist(), llvm::SelectionDAG::getAddrSpaceCast(), llvm::SelectionDAG::getAssertAlign(), llvm::SelectionDAG::getAtomic(), llvm::SelectionDAG::getBasicBlock(), llvm::SelectionDAG::getBlockAddress(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getConstantFP(), llvm::SelectionDAG::getConstantPool(), llvm::SelectionDAG::getConstantPool(), llvm::SelectionDAG::getFrameIndex(), llvm::SelectionDAG::getGatherVP(), llvm::SelectionDAG::getGetFPEnv(), llvm::SelectionDAG::getGlobalAddress(), llvm::SelectionDAG::getIndexedStoreVP(), llvm::SelectionDAG::getJumpTable(), llvm::SelectionDAG::getLabelNode(), llvm::SelectionDAG::getLifetimeNode(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getLoadFFVP(), llvm::SelectionDAG::getLoadVP(), llvm::SelectionDAG::getMachineNode(), llvm::SelectionDAG::getMaskedGather(), llvm::SelectionDAG::getMaskedHistogram(), llvm::SelectionDAG::getMaskedLoad(), llvm::SelectionDAG::getMaskedScatter(), llvm::SelectionDAG::getMaskedStore(), llvm::SelectionDAG::getMDNode(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNodeIfExists(), llvm::SelectionDAG::getPseudoProbeNode(), llvm::SelectionDAG::getRegister(), llvm::SelectionDAG::getRegisterMask(), llvm::SelectionDAG::getScatterVP(), llvm::SelectionDAG::getSetFPEnv(), llvm::SelectionDAG::getSrcValue(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getStoreVP(), llvm::SelectionDAG::getStridedLoadVP(), llvm::SelectionDAG::getStridedStoreVP(), llvm::SelectionDAG::getTruncStoreVP(), llvm::SelectionDAG::getTruncStridedStoreVP(), llvm::SelectionDAG::getVectorShuffle(), llvm::SelectionDAG::MorphNodeTo(), and llvm::SDNode::Profile().

AddNodeIDOpcode()

void AddNodeIDOpcode ( FoldingSetNodeID & ID, unsigned OpC )

static

AddNodeIDOpcode - Add the node opcode to the NodeID data.

Definition at line 707 of file SelectionDAG.cpp.

Referenced by AddNodeIDNode(), and AddNodeIDNode().

AddNodeIDOperands() [1/2]

void AddNodeIDOperands ( FoldingSetNodeID & ID, ArrayRef< SDUse > Ops )

static

AddNodeIDOperands - Various routines for adding operands to the NodeID data.

Definition at line 727 of file SelectionDAG.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops.

AddNodeIDOperands() [2/2]

void AddNodeIDOperands ( FoldingSetNodeID & ID, ArrayRef< SDValue > Ops )

static

AddNodeIDOperands - Various routines for adding operands to the NodeID data.

Definition at line 718 of file SelectionDAG.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops.

Referenced by AddNodeIDNode(), and AddNodeIDNode().

AddNodeIDValueTypes()

void AddNodeIDValueTypes ( FoldingSetNodeID & ID, SDVTList VTList )

static

AddNodeIDValueTypes - Value type lists are intern'd so we can represent them solely with their pointer.

Definition at line 713 of file SelectionDAG.cpp.

References llvm::SDVTList::VTs.

Referenced by AddNodeIDNode(), and AddNodeIDNode().

canFoldStoreIntoLibCallOutputPointers()

bool canFoldStoreIntoLibCallOutputPointers ( StoreSDNode * StoreNode, SDNode * FPNode )

static

Given a store node StoreNode, return true if it is safe to fold that node into FPNode, which expands to a library call with output pointers.

Definition at line 2473 of file SelectionDAG.cpp.

References _, llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::SelectionDAG::getHasPredecessorMaxSteps(), llvm::SDNode::hasPredecessorHelper(), llvm::SmallPtrSetImpl< PtrType >::insert(), MaxSteps, llvm::SDNode::ops(), llvm::SmallVectorImpl< T >::pop_back_val(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::SmallPtrSetImplBase::size().

Referenced by llvm::SelectionDAG::expandMultipleResultFPLibCall().

chainLoadsAndStoresForMemcpy()

void chainLoadsAndStoresForMemcpy ( SelectionDAG & DAG, const SDLoc & dl, SmallVector< SDValue, 32 > & OutChains, unsigned From, unsigned To, SmallVector< SDValue, 16 > & OutLoadChains, SmallVector< SDValue, 16 > & OutStoreChains )

static

Definition at line 8622 of file SelectionDAG.cpp.

References assert(), llvm::dyn_cast(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getTruncStore(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorTemplateCommon< T, typename >::size(), and llvm::ISD::TokenFactor.

Referenced by getMemcpyLoadsAndStores().

checkAddrSpaceIsValidForLibcall()

void checkAddrSpaceIsValidForLibcall ( const TargetLowering * TLI, unsigned AS )

static

Definition at line 9089 of file SelectionDAG.cpp.

References llvm::TargetLoweringBase::getTargetMachine(), llvm::TargetMachine::isNoopAddrSpaceCast(), and llvm::report_fatal_error().

Referenced by llvm::SelectionDAG::getMemcpy(), llvm::SelectionDAG::getMemmove(), and llvm::SelectionDAG::getMemset().

checkForCyclesHelper()

void checkForCyclesHelper ( const SDNode * N, SmallPtrSetImpl< const SDNode * > & Visited, SmallPtrSetImpl< const SDNode * > & Checked, const llvm::SelectionDAG * DAG )

static

Definition at line 14269 of file SelectionDAG.cpp.

References checkForCyclesHelper(), llvm::SmallPtrSetImpl< PtrType >::count(), llvm::dbgs(), llvm::SmallPtrSetImpl< PtrType >::erase(), llvm::errs(), llvm::SmallPtrSetImpl< PtrType >::insert(), and N.

Referenced by llvm::checkForCycles(), and checkForCyclesHelper().

commuteShuffle()

void commuteShuffle ( SDValue & N1, SDValue & N2, MutableArrayRef< int > M )

static

Swaps the values of N1 and N2.

Swaps all indices in the shuffle mask M that point at N1 to point at N2 and indices that point at N2 to point at N1.

Definition at line 2137 of file SelectionDAG.cpp.

References llvm::ShuffleVectorSDNode::commuteMask(), and std::swap().

Referenced by llvm::SelectionDAG::getVectorShuffle().

doNotCSE()

bool doNotCSE ( SDNode * N )

static

doNotCSE - Return true if CSE should not be performed for this node.

Definition at line 1002 of file SelectionDAG.cpp.

References N.

FoldBUILD_VECTOR()

SDValue FoldBUILD_VECTOR ( const SDLoc & DL, EVT VT, ArrayRef< SDValue > Ops, SelectionDAG & DAG )

static

Definition at line 6296 of file SelectionDAG.cpp.

References AbstractManglingParser< Derived, Alloc >::NumOps, AbstractManglingParser< Derived, Alloc >::Ops, llvm::all_of(), assert(), DL, llvm::ISD::EXTRACT_VECTOR_ELT, getOpcode(), llvm::SelectionDAG::getUNDEF(), getValueType(), llvm::EVT::getVectorNumElements(), llvm::isa(), llvm::EVT::isScalableVector(), and SDValue().

Referenced by llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), and llvm::SelectionDAG::getNode().

foldCONCAT_VECTORS()

SDValue foldCONCAT_VECTORS ( const SDLoc & DL, EVT VT, ArrayRef< SDValue > Ops, SelectionDAG & DAG )

static

Try to simplify vector concatenation to an input value, undef, or build vector.

Definition at line 6332 of file SelectionDAG.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::all_of(), llvm::SmallVectorImpl< T >::append(), assert(), llvm::EVT::bitsGT(), llvm::EVT::bitsLT(), llvm::ISD::BUILD_VECTOR, DL, llvm::ISD::EXTRACT_SUBVECTOR, llvm::SelectionDAG::getBuildVector(), llvm::EVT::getScalarType(), llvm::SelectionDAG::getSExtOrTrunc(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::SelectionDAG::getUNDEF(), getValueType(), llvm::EVT::getVectorElementCount(), llvm::EVT::getVectorNumElements(), llvm::SelectionDAG::getZExtOrTrunc(), llvm::EVT::isScalableVector(), llvm::TargetLoweringBase::isZExtFree(), NewSDValueDbgMsg(), and SDValue().

Referenced by llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), and llvm::SelectionDAG::getNode().

FoldSTEP_VECTOR()

SDValue FoldSTEP_VECTOR ( const SDLoc & DL, EVT VT, SDValue Step, SelectionDAG & DAG )

static

Definition at line 6288 of file SelectionDAG.cpp.

References llvm::cast(), DL, llvm::SelectionDAG::getConstant(), isZero(), and SDValue().

Referenced by llvm::SelectionDAG::FoldConstantArithmetic().

FoldValue()

std::optional< APInt > FoldValue ( unsigned Opcode, const APInt & C1, const APInt & C2 )

static

Definition at line 6819 of file SelectionDAG.cpp.

References llvm::ISD::ABDS, llvm::APIntOps::abds(), llvm::ISD::ABDU, llvm::APIntOps::abdu(), llvm::ISD::ADD, llvm::ISD::AND, llvm::APInt::ashr(), llvm::ISD::AVGCEILS, llvm::APIntOps::avgCeilS(), llvm::ISD::AVGCEILU, llvm::APIntOps::avgCeilU(), llvm::ISD::AVGFLOORS, llvm::APIntOps::avgFloorS(), llvm::ISD::AVGFLOORU, llvm::APIntOps::avgFloorU(), llvm::APInt::lshr(), llvm::ISD::MUL, llvm::ISD::MULHS, llvm::APIntOps::mulhs(), llvm::ISD::MULHU, llvm::APIntOps::mulhu(), llvm::ISD::OR, llvm::ISD::ROTL, llvm::APInt::rotl(), llvm::ISD::ROTR, llvm::APInt::rotr(), llvm::APInt::sadd_sat(), llvm::ISD::SADDSAT, llvm::ISD::SDIV, llvm::APInt::sdiv(), llvm::APInt::sge(), llvm::ISD::SHL, llvm::APInt::sle(), llvm::ISD::SMAX, llvm::ISD::SMIN, llvm::ISD::SRA, llvm::ISD::SREM, llvm::APInt::srem(), llvm::ISD::SRL, llvm::APInt::sshl_sat(), llvm::ISD::SSHLSAT, llvm::APInt::ssub_sat(), llvm::ISD::SSUBSAT, llvm::ISD::SUB, llvm::APInt::uadd_sat(), llvm::ISD::UADDSAT, llvm::ISD::UDIV, llvm::APInt::udiv(), llvm::APInt::uge(), llvm::APInt::ule(), llvm::ISD::UMAX, llvm::ISD::UMIN, llvm::ISD::UREM, llvm::APInt::urem(), llvm::APInt::ushl_sat(), llvm::ISD::USHLSAT, llvm::APInt::usub_sat(), llvm::ISD::USUBSAT, and llvm::ISD::XOR.

Referenced by llvm::SelectionDAG::FoldConstantArithmetic(), and FoldValueWithUndef().

FoldValueWithUndef()

std::optional< APInt > FoldValueWithUndef ( unsigned Opcode, const APInt & C1, bool IsUndef1, const APInt & C2, bool IsUndef2 )

static

Definition at line 6880 of file SelectionDAG.cpp.

References llvm::ISD::AND, FoldValue(), llvm::APInt::getBitWidth(), llvm::APInt::getZero(), and llvm::ISD::MUL.

Referenced by llvm::SelectionDAG::FoldConstantArithmetic().

getMemcpyLoadsAndStores()

SDValue getMemcpyLoadsAndStores ( SelectionDAG & DAG, const SDLoc & dl, SDValue Chain, SDValue Dst, SDValue Src, uint64_t Size, Align Alignment, bool isVol, bool AlwaysInline, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo, const AAMDNodes & AAInfo, BatchAAResults * BatchAA )

static

Definition at line 8647 of file SelectionDAG.cpp.

References llvm::ConstantDataArraySlice::Array, assert(), llvm::EVT::bitsGE(), llvm::CallingConv::C, chainLoadsAndStoresForMemcpy(), llvm::commonAlignment(), llvm::MemOp::Copy(), DL, llvm::dyn_cast(), llvm::dyn_cast_if_present(), EnableMemCpyDAGOpt, llvm::ISD::EXTLOAD, llvm::TargetLowering::findOptimalMemOpLowering(), llvm::MachinePointerInfo::getAddrSpace(), llvm::Function::getAttributes(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getExtLoad(), llvm::TypeSize::getFixed(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::FrameIndexSDNode::getIndex(), llvm::SelectionDAG::getMachineFunction(), llvm::TargetLoweringBase::getMaxGluedStoresPerMemcpy(), llvm::TargetLoweringBase::getMaxStoresPerMemcpy(), llvm::SelectionDAG::getMemBasePlusOffset(), getMemsetStringVal(), llvm::SelectionDAG::getNode(), llvm::MachineFrameInfo::getObjectAlign(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::EVT::getSizeInBits(), llvm::SelectionDAG::getStore(), llvm::MachineFunction::getSubtarget(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::SelectionDAG::getTruncStore(), llvm::TargetLoweringBase::getTypeToTransformTo(), llvm::MachinePointerInfo::getWithOffset(), llvm::SelectionDAG::InferPtrAlign(), isConstant(), llvm::MachinePointerInfo::isDereferenceable(), llvm::MachineFrameInfo::isFixedObjectIndex(), llvm::EVT::isInteger(), isMemSrcFromConstant(), llvm::EVT::isVector(), llvm::ConstantDataArraySlice::Length, MaxLdStGlue, llvm::MachineMemOperand::MODereferenceable, llvm::MachineMemOperand::MOInvariant, llvm::MachineMemOperand::MONone, llvm::ConstantDataArraySlice::move(), llvm::MachineMemOperand::MOVolatile, llvm::ConstantDataArraySlice::Offset, llvm::BatchAAResults::pointsToConstantMemory(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), SDValue(), llvm::MemOp::Set(), llvm::MachineFrameInfo::setObjectAlignment(), shouldLowerMemFuncForSize(), Size, llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::AAMDNodes::TBAA, llvm::AAMDNodes::TBAAStruct, llvm::ISD::TokenFactor, TRI, and llvm::MachinePointerInfo::V.

Referenced by llvm::SelectionDAG::getMemcpy().

getMemmoveLoadsAndStores()

SDValue getMemmoveLoadsAndStores ( SelectionDAG & DAG, const SDLoc & dl, SDValue Chain, SDValue Dst, SDValue Src, uint64_t Size, Align Alignment, bool isVol, bool AlwaysInline, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo, const AAMDNodes & AAInfo )

static

Definition at line 8848 of file SelectionDAG.cpp.

References assert(), llvm::CallingConv::C, llvm::SmallVectorImpl< T >::clear(), llvm::MemOp::Copy(), DL, llvm::dyn_cast(), llvm::TargetLowering::findOptimalMemOpLowering(), llvm::MachinePointerInfo::getAddrSpace(), llvm::Function::getAttributes(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::TypeSize::getFixed(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::FrameIndexSDNode::getIndex(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMachineFunction(), llvm::TargetLoweringBase::getMaxStoresPerMemmove(), llvm::SelectionDAG::getMemBasePlusOffset(), llvm::SelectionDAG::getNode(), llvm::MachineFrameInfo::getObjectAlign(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::EVT::getSizeInBits(), llvm::SelectionDAG::getStore(), llvm::MachineFunction::getSubtarget(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::MachinePointerInfo::getWithOffset(), llvm::SelectionDAG::InferPtrAlign(), llvm::MachinePointerInfo::isDereferenceable(), llvm::MachineFrameInfo::isFixedObjectIndex(), llvm::MachineMemOperand::MODereferenceable, llvm::MachineMemOperand::MONone, llvm::MachineMemOperand::MOVolatile, llvm::SmallVectorTemplateBase< T, bool >::push_back(), SDValue(), llvm::MachineFrameInfo::setObjectAlignment(), shouldLowerMemFuncForSize(), Size, llvm::AAMDNodes::TBAA, llvm::AAMDNodes::TBAAStruct, llvm::ISD::TokenFactor, and TRI.

Referenced by llvm::SelectionDAG::getMemmove().

getMemsetStores()

SDValue getMemsetStores ( SelectionDAG & DAG, const SDLoc & dl, SDValue Chain, SDValue Dst, SDValue Src, uint64_t Size, Align Alignment, bool isVol, bool AlwaysInline, MachinePointerInfo DstPtrInfo, const AAMDNodes & AAInfo )

static

Lower the call to 'memset' intrinsic function into a series of store operations.

Parameters

DAG	Selection DAG where lowered code is placed.
dl	Link to corresponding IR location.
Chain	Control flow dependency.
Dst	Pointer to destination memory location.
Src	Value of byte to write into the memory.
Size	Number of bytes to write.
Alignment	Alignment of the destination in bytes.
isVol	True if destination is volatile.
AlwaysInline	Makes sure no function call is generated.
DstPtrInfo	IR information on the memory pointer.

Returns

New head in the control flow, if lowering was successful, empty SDValue otherwise.

The function tries to replace 'llvm.memset' intrinsic with several store operations and value calculation code. This is usually profitable for small memory size or when the semantic requires inlining.

Definition at line 8973 of file SelectionDAG.cpp.

References assert(), llvm::EVT::bitsLT(), llvm::CallingConv::C, DL, llvm::dyn_cast(), llvm::TargetLowering::findOptimalMemOpLowering(), llvm::MachinePointerInfo::getAddrSpace(), llvm::Function::getAttributes(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getExtractVectorElt(), llvm::TypeSize::getFixed(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::FrameIndexSDNode::getIndex(), llvm::SelectionDAG::getMachineFunction(), llvm::TargetLoweringBase::getMaxStoresPerMemset(), llvm::SelectionDAG::getMemBasePlusOffset(), getMemsetValue(), llvm::SelectionDAG::getNode(), llvm::MachineFrameInfo::getObjectAlign(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::EVT::getScalarType(), llvm::EVT::getSizeInBits(), llvm::SelectionDAG::getStore(), llvm::MachineFunction::getSubtarget(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::EVT::getTypeForEVT(), llvm::EVT::getVectorVT(), llvm::MachinePointerInfo::getWithOffset(), llvm::MachineFrameInfo::isFixedObjectIndex(), llvm::isNullConstant(), llvm::TargetLoweringBase::isTruncateFree(), llvm::TargetLoweringBase::isTypeLegal(), llvm::EVT::isVector(), llvm::MachineMemOperand::MONone, llvm::MachineMemOperand::MOVolatile, llvm::SmallVectorTemplateBase< T, bool >::push_back(), SDValue(), llvm::MemOp::Set(), llvm::MachineFrameInfo::setObjectAlignment(), llvm::TargetLoweringBase::shallExtractConstSplatVectorElementToStore(), shouldLowerMemFuncForSize(), Size, llvm::AAMDNodes::TBAA, llvm::AAMDNodes::TBAAStruct, llvm::ISD::TokenFactor, TRI, and llvm::ISD::TRUNCATE.

Referenced by llvm::SelectionDAG::getMemset().

getMemsetStringVal()

SDValue getMemsetStringVal ( EVT VT, const SDLoc & dl, SelectionDAG & DAG, const TargetLowering & TLI, const ConstantDataArraySlice & Slice )

static

getMemsetStringVal - Similar to getMemsetValue.

Except this is only used when a memcpy is turned into a memset when the source is a constant string ptr.

Definition at line 8534 of file SelectionDAG.cpp.

References assert(), llvm::EVT::changeTypeToInteger(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getNode(), llvm::EVT::getSizeInBits(), llvm::EVT::getTypeForEVT(), llvm::EVT::isInteger(), llvm::DataLayout::isLittleEndian(), llvm::EVT::isVector(), SDValue(), and llvm::TargetLoweringBase::shouldConvertConstantLoadToIntImm().

Referenced by getMemcpyLoadsAndStores().

getMemsetValue()

SDValue getMemsetValue ( SDValue Value, EVT VT, SelectionDAG & DAG, const SDLoc & dl )

static

getMemsetValue - Vectorized representation of the memset value operand.

Definition at line 8493 of file SelectionDAG.cpp.

References assert(), llvm::CallingConv::C, llvm::dyn_cast(), llvm::SelectionDAG::getBitcast(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getConstantFP(), llvm::SelectionDAG::getContext(), llvm::EVT::getFltSemantics(), llvm::EVT::getIntegerVT(), llvm::SelectionDAG::getNode(), llvm::EVT::getScalarSizeInBits(), llvm::EVT::getScalarType(), llvm::EVT::getSizeInBits(), llvm::APInt::getSplat(), llvm::SelectionDAG::getSplatBuildVector(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::EVT::isInteger(), llvm::TargetLoweringBase::isLegalStoreImmediate(), llvm::ISD::MUL, and llvm::ISD::ZERO_EXTEND.

getSetCCInverseImpl()

ISD::CondCode getSetCCInverseImpl ( ISD::CondCode Op, bool isIntegerLike )

static

Definition at line 615 of file SelectionDAG.cpp.

References Operation, and llvm::ISD::SETTRUE2.

Referenced by llvm::ISD::getSetCCInverse(), and llvm::ISD::GlobalISel::getSetCCInverse().

gluePropagatesDivergence()

bool gluePropagatesDivergence ( const SDNode * Node )

static

Return true if a glue output should propagate divergence information.

Definition at line 12448 of file SelectionDAG.cpp.

References llvm::ISD::CopyFromReg, llvm::ISD::CopyToReg, and llvm_unreachable.

Referenced by llvm::SelectionDAG::calculateDivergence().

haveNoCommonBitsSetCommutative()

bool haveNoCommonBitsSetCommutative ( SDValue A, SDValue B )

static

Definition at line 6245 of file SelectionDAG.cpp.

References A(), llvm::ISD::AND, B(), llvm::getBitwiseNotOperand(), llvm::Other, llvm::ISD::TRUNCATE, and llvm::ISD::ZERO_EXTEND.

Referenced by llvm::SelectionDAG::haveNoCommonBitsSet().

InferPointerInfo() [1/2]

MachinePointerInfo InferPointerInfo ( const MachinePointerInfo & Info, SelectionDAG & DAG, SDValue Ptr, int64_t Offset = 0 )

static

InferPointerInfo - If the specified ptr/offset is a frame index, infer a MachinePointerInfo record from it.

This is particularly useful because the code generator has many cases where it doesn't bother passing in a MachinePointerInfo to getLoad or getStore when it has "FI+Cst".

Definition at line 9708 of file SelectionDAG.cpp.

References llvm::ISD::ADD, llvm::cast(), llvm::dyn_cast(), llvm::MachinePointerInfo::getFixedStack(), llvm::SelectionDAG::getMachineFunction(), Info, llvm::isa(), llvm::Offset, and Ptr.

Referenced by llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getLoadVP(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getTruncStore(), llvm::SelectionDAG::getTruncStoreVP(), and InferPointerInfo().

InferPointerInfo() [2/2]

MachinePointerInfo InferPointerInfo ( const MachinePointerInfo & Info, SelectionDAG & DAG, SDValue Ptr, SDValue OffsetOp )

static

InferPointerInfo - If the specified ptr/offset is a frame index, infer a MachinePointerInfo record from it.

This is particularly useful because the code generator has many cases where it doesn't bother passing in a MachinePointerInfo to getLoad or getStore when it has "FI+Cst".

Definition at line 9732 of file SelectionDAG.cpp.

References llvm::dyn_cast(), InferPointerInfo(), Info, and Ptr.

isInTailCallPositionWrapper()

bool isInTailCallPositionWrapper ( const CallInst * CI, const SelectionDAG * SelDAG, bool AllowReturnsFirstArg )

static

Definition at line 9099 of file SelectionDAG.cpp.

References llvm::funcReturnsFirstArgOfCall(), llvm::SelectionDAG::getTarget(), llvm::isInTailCallPosition(), and llvm::CallInst::isTailCall().

Referenced by llvm::SelectionDAG::getMemcmp(), llvm::SelectionDAG::getMemcpy(), llvm::SelectionDAG::getMemmove(), and llvm::SelectionDAG::getStrlen().

isMemSrcFromConstant()

bool isMemSrcFromConstant ( SDValue Src, ConstantDataArraySlice & Slice )

static

Returns true if memcpy source is constant data.

Definition at line 8595 of file SelectionDAG.cpp.

References llvm::cast(), llvm::ISD::Constant, G, llvm::getConstantDataArrayInfo(), and llvm::ISD::GlobalAddress.

Referenced by getMemcpyLoadsAndStores().

isSignedOp()

int isSignedOp ( ISD::CondCode Opcode )

static

For an integer comparison, return 1 if the comparison is a signed operation and 2 if the result is an unsigned comparison.

Return zero if the operation does not depend on the sign of the input (setne and seteq).

Definition at line 640 of file SelectionDAG.cpp.

References llvm_unreachable, 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 llvm::ISD::getSetCCAndOperation(), and llvm::ISD::getSetCCOrOperation().

makeVTList()

SDVTList makeVTList ( const EVT * VTs, unsigned NumVTs )

static

makeVTList - Return an instance of the SDVTList struct initialized with the specified members.

Definition at line 89 of file SelectionDAG.cpp.

Referenced by llvm::SelectionDAG::getVTList().

mapOverflowResult()

SelectionDAG::OverflowKind mapOverflowResult ( ConstantRange::OverflowResult OR )

static

Convert ConstantRange OverflowResult into SelectionDAG::OverflowKind.

Definition at line 4494 of file SelectionDAG.cpp.

References llvm::ConstantRange::AlwaysOverflowsHigh, llvm::ConstantRange::AlwaysOverflowsLow, llvm_unreachable, llvm::ConstantRange::MayOverflow, llvm::ConstantRange::NeverOverflows, llvm::SelectionDAG::OFK_Always, llvm::SelectionDAG::OFK_Never, and llvm::SelectionDAG::OFK_Sometime.

NewSDValueDbgMsg()

void NewSDValueDbgMsg ( SDValue V, StringRef Msg, SelectionDAG * G )

static

Definition at line 117 of file SelectionDAG.cpp.

References llvm::dbgs(), llvm::SelectionDAG::dump(), G, and LLVM_DEBUG.

Referenced by foldCONCAT_VECTORS(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::SelectionDAG::getAssertAlign(), llvm::SelectionDAG::getAtomic(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getConstantFP(), llvm::SelectionDAG::getConstantPool(), llvm::SelectionDAG::getGatherVP(), llvm::SelectionDAG::getGetFPEnv(), llvm::SelectionDAG::getIndexedStoreVP(), llvm::SelectionDAG::getLifetimeNode(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getLoadFFVP(), llvm::SelectionDAG::getLoadVP(), llvm::SelectionDAG::getMachineNode(), llvm::SelectionDAG::getMaskedGather(), llvm::SelectionDAG::getMaskedHistogram(), llvm::SelectionDAG::getMaskedLoad(), llvm::SelectionDAG::getMaskedScatter(), llvm::SelectionDAG::getMaskedStore(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getPseudoProbeNode(), llvm::SelectionDAG::getScatterVP(), llvm::SelectionDAG::getSetFPEnv(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getStoreVP(), llvm::SelectionDAG::getStridedLoadVP(), llvm::SelectionDAG::getStridedStoreVP(), llvm::SelectionDAG::getTruncStoreVP(), llvm::SelectionDAG::getTruncStridedStoreVP(), and llvm::SelectionDAG::getVectorShuffle().

shouldLowerMemFuncForSize()

bool shouldLowerMemFuncForSize ( const MachineFunction & MF, SelectionDAG & DAG )

static

Definition at line 8613 of file SelectionDAG.cpp.

References llvm::MachineFunction::getFunction(), llvm::MachineFunction::getTarget(), llvm::TargetMachine::getTargetTriple(), llvm::Function::hasMinSize(), llvm::Triple::isOSDarwin(), and llvm::SelectionDAG::shouldOptForSize().

Variable Documentation

EnableMemCpyDAGOpt

cl::opt< bool > EnableMemCpyDAGOpt("enable-memcpy-dag-opt", cl::Hidden, cl::init(true), cl::desc("Gang up loads and stores generated by inlining of memcpy")) ( "enable-memcpy-dag-opt" , cl::Hidden , cl::init(true) , cl::desc("Gang up loads and stores generated by inlining of memcpy")  )

static

Referenced by getMemcpyLoadsAndStores().

MaxLdStGlue

cl::opt< int > MaxLdStGlue("ldstmemcpy-glue-max", cl::desc("Number limit for gluing ld/st of memcpy."), cl::Hidden, cl::init(0)) ( "ldstmemcpy-glue-max" , cl::desc("Number limit for gluing ld/st of memcpy.") , cl::Hidden , cl::init(0)  )

static

Referenced by getMemcpyLoadsAndStores().

MaxSteps

cl::opt< unsigned > MaxSteps("has-predecessor-max-steps", cl::Hidden, cl::init(8192), cl::desc("DAG combiner limit number of steps when searching DAG " "for predecessor nodes")) ( "has-predecessor-max-steps" , cl::Hidden , cl::init(8192) , cl::desc("DAG combiner limit number of steps when searching DAG " "for predecessor nodes")  )

static

Referenced by canFoldStoreIntoLibCallOutputPointers(), llvm::SelectionDAG::getHasPredecessorMaxSteps(), getPostIndexedLoadStoreOp(), llvm::SDNode::hasPredecessorHelper(), isValidBaseUpdate(), PerformMVEVLDCombine(), shouldCombineToPostInc(), shouldTransformMulToShiftsAddsSubs(), and StepOverPredicatedInstrs().