This SDNode is used to implement the code generator support for the llvm IR shufflevector instruction. More...

#include "llvm/CodeGen/SelectionDAGNodes.h"

Inheritance diagram for llvm::ShuffleVectorSDNode:

Public Member Functions
ArrayRef< int >	getMask () const

int	getMaskElt (unsigned Idx) const

bool	isSplat () const

int	getSplatIndex () const

Public Member Functions inherited from llvm::SDNode
unsigned	getOpcode () const
	Return the SelectionDAG opcode value for this node.

bool	isTargetOpcode () const
	Test if this node has a target-specific opcode (in the <target>ISD namespace).

bool	isUndef () const
	Returns true if the node type is UNDEF or POISON.

bool	isAnyAdd () const
	Returns true if the node type is ADD or PTRADD.

bool	isMemIntrinsic () const
	Test if this node is a memory intrinsic (with valid pointer information).

bool	isStrictFPOpcode ()
	Test if this node is a strict floating point pseudo-op.

bool	isAssert () const
	Test if this node is an assert operation.

bool	isVPOpcode () const
	Test if this node is a vector predication operation.

bool	isMachineOpcode () const
	Test if this node has a post-isel opcode, directly corresponding to a MachineInstr opcode.

unsigned	getMachineOpcode () const
	This may only be called if isMachineOpcode returns true.

bool	getHasDebugValue () const

void	setHasDebugValue (bool b)

bool	isDivergent () const

bool	use_empty () const
	Return true if there are no uses of this node.

bool	hasOneUse () const
	Return true if there is exactly one use of this node.

size_t	use_size () const
	Return the number of uses of this node.

int	getNodeId () const
	Return the unique node id.

void	setNodeId (int Id)
	Set unique node id.

int	getCombinerWorklistIndex () const
	Get worklist index for DAGCombiner.

void	setCombinerWorklistIndex (int Index)
	Set worklist index for DAGCombiner.

unsigned	getIROrder () const
	Return the node ordering.

void	setIROrder (unsigned Order)
	Set the node ordering.

const DebugLoc &	getDebugLoc () const
	Return the source location info.

void	setDebugLoc (DebugLoc dl)
	Set source location info.

use_iterator	use_begin () const
	Provide iteration support to walk over all uses of an SDNode.

iterator_range< use_iterator >	uses ()

iterator_range< use_iterator >	uses () const

user_iterator	user_begin () const
	Provide iteration support to walk over all users of an SDNode.

iterator_range< user_iterator >	users ()

iterator_range< user_iterator >	users () const

bool	hasNUsesOfValue (unsigned NUses, unsigned Value) const
	Return true if there are exactly NUSES uses of the indicated value.

LLVM_ABI bool	hasAnyUseOfValue (unsigned Value) const
	Return true if there are any use of the indicated value.

LLVM_ABI bool	isOnlyUserOf (const SDNode *N) const
	Return true if this node is the only use of N.

LLVM_ABI bool	isOperandOf (const SDNode *N) const
	Return true if this node is an operand of N.

bool	isPredecessorOf (const SDNode *N) const
	Return true if this node is a predecessor of N.

LLVM_ABI bool	hasPredecessor (const SDNode *N) const
	Return true if N is a predecessor of this node.

unsigned	getNumOperands () const
	Return the number of values used by this operation.

uint64_t	getConstantOperandVal (unsigned Num) const
	Helper method returns the integer value of a ConstantSDNode operand.

uint64_t	getAsZExtVal () const
	Helper method returns the zero-extended integer value of a ConstantSDNode.

const APInt &	getConstantOperandAPInt (unsigned Num) const
	Helper method returns the APInt of a ConstantSDNode operand.

const APInt &	getAsAPIntVal () const
	Helper method returns the APInt value of a ConstantSDNode.

std::optional< APInt >	bitcastToAPInt () const

const SDValue &	getOperand (unsigned Num) const

op_iterator	op_begin () const

op_iterator	op_end () const

ArrayRef< SDUse >	ops () const

iterator_range< value_op_iterator >	op_values () const

SDVTList	getVTList () const

SDNode *	getGluedNode () const
	If this node has a glue operand, return the node to which the glue operand points.

SDNode *	getGluedUser () const
	If this node has a glue value with a user, return the user (there is at most one).

SDNodeFlags	getFlags () const

void	setFlags (SDNodeFlags NewFlags)

void	dropFlags (unsigned Mask)

LLVM_ABI void	intersectFlagsWith (const SDNodeFlags Flags)
	Clear any flags in this node that aren't also set in Flags.

bool	hasPoisonGeneratingFlags () const

void	setCFIType (uint32_t Type)

uint32_t	getCFIType () const

unsigned	getNumValues () const
	Return the number of values defined/returned by this operator.

EVT	getValueType (unsigned ResNo) const
	Return the type of a specified result.

MVT	getSimpleValueType (unsigned ResNo) const
	Return the type of a specified result as a simple type.

TypeSize	getValueSizeInBits (unsigned ResNo) const
	Returns MVT::getSizeInBits(getValueType(ResNo)).

value_iterator	value_begin () const

value_iterator	value_end () const

iterator_range< value_iterator >	values () const

LLVM_ABI std::string	getOperationName (const SelectionDAG *G=nullptr) const
	Return the opcode of this operation for printing.

LLVM_ABI void	print_types (raw_ostream &OS, const SelectionDAG *G) const

LLVM_ABI void	print_details (raw_ostream &OS, const SelectionDAG *G) const

LLVM_ABI void	print (raw_ostream &OS, const SelectionDAG *G=nullptr) const

LLVM_ABI void	printr (raw_ostream &OS, const SelectionDAG *G=nullptr) const

LLVM_ABI void	printrFull (raw_ostream &O, const SelectionDAG *G=nullptr) const
	Print a SelectionDAG node and all children down to the leaves.

LLVM_ABI void	printrWithDepth (raw_ostream &O, const SelectionDAG *G=nullptr, unsigned depth=100) const
	Print a SelectionDAG node and children up to depth "depth." The given SelectionDAG allows target-specific nodes to be printed in human-readable form.

LLVM_ABI void	dump () const
	Dump this node, for debugging.

LLVM_ABI void	dumpr () const
	Dump (recursively) this node and its use-def subgraph.

LLVM_ABI void	dump (const SelectionDAG *G) const
	Dump this node, for debugging.

LLVM_ABI void	dumpr (const SelectionDAG *G) const
	Dump (recursively) this node and its use-def subgraph.

LLVM_ABI void	dumprFull (const SelectionDAG *G=nullptr) const
	printrFull to dbgs().

LLVM_ABI void	dumprWithDepth (const SelectionDAG *G=nullptr, unsigned depth=100) const
	printrWithDepth to dbgs().

LLVM_ABI void	Profile (FoldingSetNodeID &ID) const
	Gather unique data for the node.

void	addUse (SDUse &U)
	This method should only be used by the SDUse class.

Public Member Functions inherited from llvm::FoldingSetBase::Node
	Node ()=default

void *	getNextInBucket () const

void	SetNextInBucket (void *N)

Public Member Functions inherited from llvm::ilist_node_impl< OptionsT >
self_iterator	getIterator ()

const_self_iterator	getIterator () const

reverse_self_iterator	getReverseIterator ()

const_reverse_self_iterator	getReverseIterator () const

template<typename T = OptionsT>
std::enable_if_t< T::is_sentinel_tracking_explicit, bool >	isSentinel () const
	Check whether this is the sentinel node.

Public Member Functions inherited from llvm::ilist_detail::node_parent_access< ilist_node_impl< OptionsT >, OptionsT::parent_ty >
const OptionsT::parent_ty *	getParent () const

OptionsT::parent_ty *	getParent ()

void	setParent (OptionsT::parent_ty *Parent)

Static Public Member Functions
static LLVM_ABI bool	isSplatMask (ArrayRef< int > Mask)

static int	getSplatMaskIndex (ArrayRef< int > Mask)

static void	commuteMask (MutableArrayRef< int > Mask)
	Change values in a shuffle permute mask assuming the two vector operands have swapped position.

static bool	classof (const SDNode *N)

Static Public Member Functions inherited from llvm::SDNode
static use_iterator	use_end ()

static user_iterator	user_end ()

static bool	hasPredecessorHelper (const SDNode N, SmallPtrSetImpl< const SDNode > &Visited, SmallVectorImpl< const SDNode * > &Worklist, unsigned int MaxSteps=0, bool TopologicalPrune=false)
	Returns true if N is a predecessor of any node in Worklist.

static LLVM_ABI bool	areOnlyUsersOf (ArrayRef< const SDNode * > Nodes, const SDNode *N)
	Return true if all the users of N are contained in Nodes.

static constexpr size_t	getMaxNumOperands ()
	Return the maximum number of operands that a SDNode can hold.

static LLVM_ABI const char *	getIndexedModeName (ISD::MemIndexedMode AM)

Protected Member Functions
	ShuffleVectorSDNode (SDVTList VTs, unsigned Order, const DebugLoc &dl, const int *M)

Protected Member Functions inherited from llvm::SDNode
	SDNode (unsigned Opc, unsigned Order, DebugLoc dl, SDVTList VTs)
	Create an SDNode.

LLVM_ABI void	DropOperands ()
	Release the operands and set this node to have zero operands.

Protected Member Functions inherited from llvm::ilist_node_impl< OptionsT >
	ilist_node_impl ()=default

Friends
class	SelectionDAG

Additional Inherited Members
Public Types inherited from llvm::SDNode
using	op_iterator = SDUse *

using	value_iterator = const EVT *

Public Attributes inherited from llvm::SDNode
uint16_t	PersistentId = 0xffff
	Unique and persistent id per SDNode in the DAG.

Protected Types inherited from llvm::SDNode
enum	{ NumSDNodeBits = 3 }

enum	{ NumMemSDNodeBits = NumSDNodeBits + 4 }

enum	{ NumLSBaseSDNodeBits = NumMemSDNodeBits + 3 }

Protected Types inherited from llvm::ilist_node_impl< OptionsT >
using	self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, OptionsT, false, false >::type

using	const_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, OptionsT, false, true >::type

using	reverse_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, OptionsT, true, false >::type

using	const_reverse_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, OptionsT, true, true >::type

Static Protected Member Functions inherited from llvm::SDNode
static SDVTList	getSDVTList (MVT VT)

Protected Attributes inherited from llvm::SDNode
union {
char RawSDNodeBits [sizeof(uint16_t)]

SDNodeBitfields SDNodeBits

ConstantSDNodeBitfields ConstantSDNodeBits

MemSDNodeBitfields MemSDNodeBits

LSBaseSDNodeBitfields LSBaseSDNodeBits

LoadSDNodeBitfields LoadSDNodeBits

StoreSDNodeBitfields StoreSDNodeBits

};

Detailed Description

This SDNode is used to implement the code generator support for the llvm IR shufflevector instruction.

It combines elements from two input vectors into a new input vector, with the selection and ordering of elements determined by an array of integers, referred to as the shuffle mask. For input vectors of width N, mask indices of 0..N-1 refer to elements from the LHS input, and indices from N to 2N-1 the RHS. An index of -1 is treated as undef, such that the code generator may put any value in the corresponding element of the result.

Definition at line 1680 of file SelectionDAGNodes.h.