class ShuffleVectorSDNode

Declaration

class ShuffleVectorSDNode : public SDNode { /* full declaration omitted */ };

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.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1511

Inherits from: SDNode

Member Variables

private const int* Mask

Inherited from SDNode:

protected

public PersistentId

Method Overview

• protected ShuffleVectorSDNode(llvm::EVT VT, unsigned int Order, const llvm::DebugLoc & dl, const int * M)
• public static bool classof(const llvm::SDNode * N)
• public static void commuteMask(MutableArrayRef<int> Mask)
• public ArrayRef<int> getMask() const
• public int getMaskElt(unsigned int Idx) const
• public int getSplatIndex() const
• public bool isSplat() const
• public static bool isSplatMask(const int * Mask, llvm::EVT VT)

Inherited from SDNode:

• protected DropOperands
• public Profile
• public addUse
• public areOnlyUsersOf
• public dump
• public dump
• public dumpr
• public dumpr
• public dumprFull
• public dumprWithDepth
• public getConstantOperandAPInt
• public getConstantOperandVal
• public getDebugLoc
• public getFlags
• public getGluedNode
• public getGluedUser
• public getHasDebugValue
• public getIROrder
• public getIndexedModeName
• public getMachineOpcode
• public getMaxNumOperands
• public getNodeId
• public getNumOperands
• public getNumValues
• public getOpcode
• public getOperand
• public getOperationName
• protected getSDVTList
• public getSimpleValueType
• public getVTList
• public getValueSizeInBits
• public getValueType
• public hasAnyUseOfValue
• public hasNUsesOfValue
• public hasOneUse
• public hasPredecessor
• public hasPredecessorHelper
• public intersectFlagsWith
• public isDivergent
• public isMachineOpcode
• public isMemIntrinsic
• public isOnlyUserOf
• public isOperandOf
• public isPredecessorOf
• public isStrictFPOpcode
• public isTargetMemoryOpcode
• public isTargetOpcode
• public isTargetStrictFPOpcode
• public isUndef
• public isVPOpcode
• public op_begin
• public op_end
• public op_values
• public ops
• public print
• public print_details
• public print_types
• public printr
• public printrFull
• public printrWithDepth
• public setDebugLoc
• public setFlags
• public setHasDebugValue
• public setIROrder
• public setNodeId
• public use_begin
• public use_empty
• public use_end
• public use_size
• public uses
• public uses
• public value_begin
• public value_end
• public values

Inherited from FoldingSetBase::Node:

• public SetNextInBucket
• public getNextInBucket

Methods

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

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1519

Parameters

llvm::EVT VT

unsigned int Order

const llvm::DebugLoc& dl

const int* M

¶static bool classof(const llvm::SDNode* N)

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1564

Parameters

const llvm::SDNode* N

¶static void commuteMask(MutableArrayRef<int> Mask)

Description

Change values in a shuffle permute mask assuming the two vector operands have swapped position.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1551

Parameters

MutableArrayRef<int> Mask

¶ArrayRef<int> getMask() const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1523

¶int getMaskElt(unsigned int Idx) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1528

Parameters

unsigned int Idx

¶int getSplatIndex() const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1535

¶bool isSplat() const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1533

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

Declared at: llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1547

Parameters

const int* Mask

llvm::EVT VT