class VPReductionPHIRecipe

Declaration

class VPReductionPHIRecipe : public VPHeaderPHIRecipe { /* full declaration omitted */ };

Description

A recipe for handling reduction phis. The start value is the first operand of the recipe and the incoming value from the backedge is the second operand.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1313

Inherits from: VPHeaderPHIRecipe

Member Variables

private const llvm::RecurrenceDescriptor& RdxDesc

Descriptor for the reduction.

private bool IsInLoop

The phi is part of an in-loop reduction.

private bool IsOrdered

The phi is part of an ordered reduction. Requires IsInLoop to be true.

Inherited from VPValue:

protected UnderlyingVal

protected Def

Method Overview

• public VPReductionPHIRecipe(llvm::PHINode * Phi, const llvm::RecurrenceDescriptor & RdxDesc, llvm::VPValue & Start, bool IsInLoop = false, bool IsOrdered = false)
• public static inline bool classof(const llvm::VPRecipeBase * R)
• public static inline bool classof(const llvm::VPHeaderPHIRecipe * R)
• public static inline bool classof(const llvm::VPValue * V)
• public void execute(llvm::VPTransformState & State)
• public const llvm::RecurrenceDescriptor & getRecurrenceDescriptor() const
• public bool isInLoop() const
• public bool isOrdered() const
• public void print(llvm::raw_ostream & O, const llvm::Twine & Indent, llvm::VPSlotTracker & SlotTracker) const
• public ~VPReductionPHIRecipe()

Inherited from VPHeaderPHIRecipe:

• public classof
• public classof
• public execute
• public getBackedgeRecipe
• public getBackedgeValue
• public getStartValue
• public getStartValue
• public print

Inherited from VPValue:

• public addUser
• public dump
• public getDef
• public getDef
• public getLiveInIRValue
• public getLiveInIRValue
• public getNumUsers
• public getUnderlyingValue
• public getUnderlyingValue
• public getVPValueID
• public hasMoreThanOneUniqueUser
• public print
• public printAsOperand
• public removeUser
• public replaceAllUsesWith
• protected setUnderlyingValue
• public user_begin
• public user_begin
• public user_end
• public user_end
• public users
• public users

Inherited from VPRecipeBase:

• public classof
• public classof
• public eraseFromParent
• public execute
• public getParent
• public getParent
• public getUnderlyingInstr
• public getUnderlyingInstr
• public insertAfter
• public insertBefore
• public insertBefore
• public isPhi
• public mayHaveSideEffects
• public mayReadFromMemory
• public mayReadOrWriteMemory
• public mayWriteToMemory
• public moveAfter
• public moveBefore
• public removeFromParent

Inherited from VPUser:

• public addOperand
• public classof
• public getNumOperands
• public getOperand
• public getVPUserID
• public onlyFirstLaneUsed
• public op_begin
• public op_begin
• public op_end
• public op_end
• public operands
• public operands
• protected printOperands
• public removeLastOperand
• public setOperand
• public usesScalars

Inherited from VPDef:

• public definedValues
• public definedValues
• public dump
• public getNumDefinedValues
• public getVPDefID
• public getVPSingleValue
• public getVPSingleValue
• public getVPValue
• public getVPValue
• public print

Methods

¶VPReductionPHIRecipe(
    llvm::PHINode* Phi,
    const llvm::RecurrenceDescriptor& RdxDesc,
    llvm::VPValue& Start,
    bool IsInLoop = false,
    bool IsOrdered = false)

Description

Create a new VPReductionPHIRecipe for the reduction \p Phi described by \p RdxDesc.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1326

Parameters

llvm::PHINode* Phi

const llvm::RecurrenceDescriptor& RdxDesc

llvm::VPValue& Start

bool IsInLoop = false

bool IsOrdered = false

¶static inline bool classof(
    const llvm::VPRecipeBase* R)

Description

Method to support type inquiry through isa, cast, and dyn_cast.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1337

Parameters

const llvm::VPRecipeBase* R

¶static inline bool classof(
    const llvm::VPHeaderPHIRecipe* R)

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1340

Parameters

const llvm::VPHeaderPHIRecipe* R

¶static inline bool classof(const llvm::VPValue* V)

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1343

Parameters

const llvm::VPValue* V

¶void execute(llvm::VPTransformState& State)

Description

Generate the phi/select nodes.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1348

Parameters

llvm::VPTransformState& State

¶const llvm::RecurrenceDescriptor&
getRecurrenceDescriptor() const

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1356

¶bool isInLoop() const

Description

Returns true, if the phi is part of an in-loop reduction.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1364

¶bool isOrdered() const

Description

Returns true, if the phi is part of an ordered reduction.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1361

¶void print(llvm::raw_ostream& O,
           const llvm::Twine& Indent,
           llvm::VPSlotTracker& SlotTracker) const

Description

Print the recipe.

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1352

Parameters

llvm::raw_ostream& O

const llvm::Twine& Indent

llvm::VPSlotTracker& SlotTracker

¶~VPReductionPHIRecipe()

Declared at: llvm/lib/Transforms/Vectorize/VPlan.h:1334