class SelectionDAGTargetInfo

Declaration

class SelectionDAGTargetInfo { /* full declaration omitted */ };

Description

Targets can subclass this to parameterize the SelectionDAG lowering and instruction selection process.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:31

Method Overview

• public virtual std::pair<SDValue, SDValue> EmitTargetCodeForMemchr(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Src, llvm::SDValue Char, llvm::SDValue Length, llvm::MachinePointerInfo SrcPtrInfo) const
• public virtual std::pair<SDValue, SDValue> EmitTargetCodeForMemcmp(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Op1, llvm::SDValue Op2, llvm::SDValue Op3, llvm::MachinePointerInfo Op1PtrInfo, llvm::MachinePointerInfo Op2PtrInfo) const
• public virtual llvm::SDValue EmitTargetCodeForMemcpy(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Op1, llvm::SDValue Op2, llvm::SDValue Op3, unsigned int Align, bool isVolatile, bool AlwaysInline, llvm::MachinePointerInfo DstPtrInfo, llvm::MachinePointerInfo SrcPtrInfo) const
• public virtual llvm::SDValue EmitTargetCodeForMemmove(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Op1, llvm::SDValue Op2, llvm::SDValue Op3, unsigned int Align, bool isVolatile, llvm::MachinePointerInfo DstPtrInfo, llvm::MachinePointerInfo SrcPtrInfo) const
• public virtual llvm::SDValue EmitTargetCodeForMemset(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Op1, llvm::SDValue Op2, llvm::SDValue Op3, unsigned int Align, bool isVolatile, llvm::MachinePointerInfo DstPtrInfo) const
• public virtual llvm::SDValue EmitTargetCodeForSetTag(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Addr, llvm::SDValue Size, llvm::MachinePointerInfo DstPtrInfo, bool ZeroData) const
• public virtual std::pair<SDValue, SDValue> EmitTargetCodeForStrcmp(llvm::SelectionDAG & DAG, const llvm::SDLoc & dl, llvm::SDValue Chain, llvm::SDValue Op1, llvm::SDValue Op2, llvm::MachinePointerInfo Op1PtrInfo, llvm::MachinePointerInfo Op2PtrInfo) const
• public virtual std::pair<SDValue, SDValue> EmitTargetCodeForStrcpy(llvm::SelectionDAG & DAG, const llvm::SDLoc & DL, llvm::SDValue Chain, llvm::SDValue Dest, llvm::SDValue Src, llvm::MachinePointerInfo DestPtrInfo, llvm::MachinePointerInfo SrcPtrInfo, bool isStpcpy) const
• public virtual std::pair<SDValue, SDValue> EmitTargetCodeForStrlen(llvm::SelectionDAG & DAG, const llvm::SDLoc & DL, llvm::SDValue Chain, llvm::SDValue Src, llvm::MachinePointerInfo SrcPtrInfo) const
• public virtual std::pair<SDValue, SDValue> EmitTargetCodeForStrnlen(llvm::SelectionDAG & DAG, const llvm::SDLoc & DL, llvm::SDValue Chain, llvm::SDValue Src, llvm::SDValue MaxLength, llvm::MachinePointerInfo SrcPtrInfo) const
• public SelectionDAGTargetInfo()
• public SelectionDAGTargetInfo(const llvm::SelectionDAGTargetInfo &)
• public virtual bool generateFMAsInMachineCombiner(CodeGenOpt::Level OptLevel) const
• public virtual ~SelectionDAGTargetInfo()

Methods

¶virtual std::pair<SDValue, SDValue>
EmitTargetCodeForMemchr(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Src,
    llvm::SDValue Char,
    llvm::SDValue Length,
    llvm::MachinePointerInfo SrcPtrInfo) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:105

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Src

llvm::SDValue Char

llvm::SDValue Length

llvm::MachinePointerInfo SrcPtrInfo

¶virtual std::pair<SDValue, SDValue>
EmitTargetCodeForMemcmp(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Op1,
    llvm::SDValue Op2,
    llvm::SDValue Op3,
    llvm::MachinePointerInfo Op1PtrInfo,
    llvm::MachinePointerInfo Op2PtrInfo) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:93

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Op1

llvm::SDValue Op2

llvm::SDValue Op3

llvm::MachinePointerInfo Op1PtrInfo

llvm::MachinePointerInfo Op2PtrInfo

¶virtual llvm::SDValue EmitTargetCodeForMemcpy(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Op1,
    llvm::SDValue Op2,
    llvm::SDValue Op3,
    unsigned int Align,
    bool isVolatile,
    bool AlwaysInline,
    llvm::MachinePointerInfo DstPtrInfo,
    llvm::MachinePointerInfo SrcPtrInfo) const

Description

Emit target-specific code that performs a memcpy. This can be used by targets to provide code sequences for cases that don't fit the target's parameters for simple loads/stores and can be more efficient than using a library call. This function can return a null SDValue if the target declines to use custom code and a different lowering strategy should be used. If AlwaysInline is true, the size is constant and the target should not emit any calls and is strongly encouraged to attempt to emit inline code even if it is beyond the usual threshold because this intrinsic is being expanded in a place where calls are not feasible (e.g. within the prologue for another call). If the target chooses to decline an AlwaysInline request here, legalize will resort to using simple loads and stores.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:51

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Op1

llvm::SDValue Op2

llvm::SDValue Op3

unsigned int Align

bool isVolatile

bool AlwaysInline

llvm::MachinePointerInfo DstPtrInfo

llvm::MachinePointerInfo SrcPtrInfo

¶virtual llvm::SDValue EmitTargetCodeForMemmove(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Op1,
    llvm::SDValue Op2,
    llvm::SDValue Op3,
    unsigned int Align,
    bool isVolatile,
    llvm::MachinePointerInfo DstPtrInfo,
    llvm::MachinePointerInfo SrcPtrInfo) const

Description

Emit target-specific code that performs a memmove. This can be used by targets to provide code sequences for cases that don't fit the target's parameters for simple loads/stores and can be more efficient than using a library call. This function can return a null SDValue if the target declines to use custom code and a different lowering strategy should be used.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:67

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Op1

llvm::SDValue Op2

llvm::SDValue Op3

unsigned int Align

bool isVolatile

llvm::MachinePointerInfo DstPtrInfo

llvm::MachinePointerInfo SrcPtrInfo

¶virtual llvm::SDValue EmitTargetCodeForMemset(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Op1,
    llvm::SDValue Op2,
    llvm::SDValue Op3,
    unsigned int Align,
    bool isVolatile,
    llvm::MachinePointerInfo DstPtrInfo) const

Description

Emit target-specific code that performs a memset. This can be used by targets to provide code sequences for cases that don't fit the target's parameters for simple stores and can be more efficient than using a library call. This function can return a null SDValue if the target declines to use custom code and a different lowering strategy should be used.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:80

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Op1

llvm::SDValue Op2

llvm::SDValue Op3

unsigned int Align

bool isVolatile

llvm::MachinePointerInfo DstPtrInfo

¶virtual llvm::SDValue EmitTargetCodeForSetTag(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Addr,
    llvm::SDValue Size,
    llvm::MachinePointerInfo DstPtrInfo,
    bool ZeroData) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:150

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Addr

llvm::SDValue Size

llvm::MachinePointerInfo DstPtrInfo

bool ZeroData

¶virtual std::pair<SDValue, SDValue>
EmitTargetCodeForStrcmp(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& dl,
    llvm::SDValue Chain,
    llvm::SDValue Op1,
    llvm::SDValue Op2,
    llvm::MachinePointerInfo Op1PtrInfo,
    llvm::MachinePointerInfo Op2PtrInfo) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:130

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& dl

llvm::SDValue Chain

llvm::SDValue Op1

llvm::SDValue Op2

llvm::MachinePointerInfo Op1PtrInfo

llvm::MachinePointerInfo Op2PtrInfo

¶virtual std::pair<SDValue, SDValue>
EmitTargetCodeForStrcpy(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& DL,
    llvm::SDValue Chain,
    llvm::SDValue Dest,
    llvm::SDValue Src,
    llvm::MachinePointerInfo DestPtrInfo,
    llvm::MachinePointerInfo SrcPtrInfo,
    bool isStpcpy) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:118

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& DL

llvm::SDValue Chain

llvm::SDValue Dest

llvm::SDValue Src

llvm::MachinePointerInfo DestPtrInfo

llvm::MachinePointerInfo SrcPtrInfo

bool isStpcpy

¶virtual std::pair<SDValue, SDValue>
EmitTargetCodeForStrlen(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& DL,
    llvm::SDValue Chain,
    llvm::SDValue Src,
    llvm::MachinePointerInfo SrcPtrInfo) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:138

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& DL

llvm::SDValue Chain

llvm::SDValue Src

llvm::MachinePointerInfo SrcPtrInfo

¶virtual std::pair<SDValue, SDValue>
EmitTargetCodeForStrnlen(
    llvm::SelectionDAG& DAG,
    const llvm::SDLoc& DL,
    llvm::SDValue Chain,
    llvm::SDValue Src,
    llvm::SDValue MaxLength,
    llvm::MachinePointerInfo SrcPtrInfo) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:144

Parameters

llvm::SelectionDAG& DAG

const llvm::SDLoc& DL

llvm::SDValue Chain

llvm::SDValue Src

llvm::SDValue MaxLength

llvm::MachinePointerInfo SrcPtrInfo

¶SelectionDAGTargetInfo()

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:33

¶SelectionDAGTargetInfo(
    const llvm::SelectionDAGTargetInfo&)

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:34

Parameters

const llvm::SelectionDAGTargetInfo&

¶virtual bool generateFMAsInMachineCombiner(
    CodeGenOpt::Level OptLevel) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:160

Parameters

CodeGenOpt::Level OptLevel

¶virtual ~SelectionDAGTargetInfo()

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:36