LLVM 19.0.0git
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llvm::ShuffleVectorSDNode Class Reference

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:
Inheritance graph
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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 isTargetStrictFPOpcode () const
 Test if this node has a target-specific opcode that may raise FP exceptions (in the <target>ISD namespace and greater than FIRST_TARGET_STRICTFP_OPCODE).
 
bool isTargetMemoryOpcode () const
 Test if this node has a target-specific memory-referencing opcode (in the <target>ISD namespace and greater than FIRST_TARGET_MEMORY_OPCODE).
 
bool isUndef () const
 Return true if the type of the node type undefined.
 
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 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.
 
unsigned getIROrder () const
 Return the node ordering.
 
void setIROrder (unsigned Order)
 Set the node ordering.
 
const DebugLocgetDebugLoc () 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_iteratoruses ()
 
iterator_range< use_iteratoruses () const
 
bool hasNUsesOfValue (unsigned NUses, unsigned Value) const
 Return true if there are exactly NUSES uses of the indicated value.
 
bool hasAnyUseOfValue (unsigned Value) const
 Return true if there are any use of the indicated value.
 
bool isOnlyUserOf (const SDNode *N) const
 Return true if this node is the only use of N.
 
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.
 
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 APIntgetConstantOperandAPInt (unsigned Num) const
 Helper method returns the APInt of a ConstantSDNode operand.
 
const APIntgetAsAPIntVal () const
 Helper method returns the APInt value of a ConstantSDNode.
 
const SDValuegetOperand (unsigned Num) const
 
op_iterator op_begin () const
 
op_iterator op_end () const
 
ArrayRef< SDUseops () const
 
iterator_range< value_op_iteratorop_values () const
 
SDVTList getVTList () const
 
SDNodegetGluedNode () const
 If this node has a glue operand, return the node to which the glue operand points.
 
SDNodegetGluedUser () 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 intersectFlagsWith (const SDNodeFlags Flags)
 Clear any flags in this node that aren't also set in Flags.
 
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_iteratorvalues () const
 
std::string getOperationName (const SelectionDAG *G=nullptr) const
 Return the opcode of this operation for printing.
 
void print_types (raw_ostream &OS, const SelectionDAG *G) const
 
void print_details (raw_ostream &OS, const SelectionDAG *G) const
 
void print (raw_ostream &OS, const SelectionDAG *G=nullptr) const
 
void printr (raw_ostream &OS, const SelectionDAG *G=nullptr) const
 
void printrFull (raw_ostream &O, const SelectionDAG *G=nullptr) const
 Print a SelectionDAG node and all children down to the leaves.
 
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.
 
void dump () const
 Dump this node, for debugging.
 
void dumpr () const
 Dump (recursively) this node and its use-def subgraph.
 
void dump (const SelectionDAG *G) const
 Dump this node, for debugging.
 
void dumpr (const SelectionDAG *G) const
 Dump (recursively) this node and its use-def subgraph.
 
void dumprFull (const SelectionDAG *G=nullptr) const
 printrFull to dbgs().
 
void dumprWithDepth (const SelectionDAG *G=nullptr, unsigned depth=100) const
 printrWithDepth to dbgs().
 
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
 
bool isSentinel () const
 Check whether this is the sentinel node.
 

Static Public Member Functions

static bool isSplatMask (const int *Mask, EVT VT)
 
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 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 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 const chargetIndexedModeName (ISD::MemIndexedMode AM)
 

Protected Member Functions

 ShuffleVectorSDNode (EVT VT, 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.
 
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 (EVT 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 1557 of file SelectionDAGNodes.h.

Constructor & Destructor Documentation

◆ ShuffleVectorSDNode()

llvm::ShuffleVectorSDNode::ShuffleVectorSDNode ( EVT  VT,
unsigned  Order,
const DebugLoc dl,
const int *  M 
)
inlineprotected

Definition at line 1565 of file SelectionDAGNodes.h.

Member Function Documentation

◆ classof()

static bool llvm::ShuffleVectorSDNode::classof ( const SDNode N)
inlinestatic

Definition at line 1610 of file SelectionDAGNodes.h.

References N, and llvm::ISD::VECTOR_SHUFFLE.

◆ commuteMask()

static void llvm::ShuffleVectorSDNode::commuteMask ( MutableArrayRef< int >  Mask)
inlinestatic

◆ getMask()

ArrayRef< int > llvm::ShuffleVectorSDNode::getMask ( ) const
inline

◆ getMaskElt()

int llvm::ShuffleVectorSDNode::getMaskElt ( unsigned  Idx) const
inline

◆ getSplatIndex()

int llvm::ShuffleVectorSDNode::getSplatIndex ( ) const
inline

◆ isSplat()

bool llvm::ShuffleVectorSDNode::isSplat ( ) const
inline

◆ isSplatMask()

bool ShuffleVectorSDNode::isSplatMask ( const int *  Mask,
EVT  VT 
)
static

Friends And Related Function Documentation

◆ SelectionDAG

friend class SelectionDAG
friend

Definition at line 1563 of file SelectionDAGNodes.h.


The documentation for this class was generated from the following files: