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, llvm::Align Alignment, 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, llvm::Align Alignment, 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, llvm::Align Alignment, bool isVolatile, bool AlwaysInline, 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 disableGenericCombines(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

Description

Emit target-specific code that performs a memchr, in cases where that is faster than a libcall. The first returned SDValue is the result of the memchr and the second is the chain. Both SDValues can be null if a normal libcall should be used.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:107

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

Description

Emit target-specific code that performs a memcmp/bcmp, in cases where that is faster than a libcall. The first returned SDValue is the result of the memcmp and the second is the chain. Both SDValues can be null if a normal libcall should be used.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:95

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,
    llvm::Align Alignment,
    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
llvm::Align Alignment
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,
    llvm::Align Alignment,
    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
llvm::Align Alignment
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,
    llvm::Align Alignment,
    bool isVolatile,
    bool AlwaysInline,
    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. Note that if AlwaysInline is true the function has to return a valid SDValue.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:81

Parameters

llvm::SelectionDAG& DAG
const llvm::SDLoc& dl
llvm::SDValue Chain
llvm::SDValue Op1
llvm::SDValue Op2
llvm::SDValue Op3
llvm::Align Alignment
bool isVolatile
bool AlwaysInline
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:152

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

Description

Emit target-specific code that performs a strcmp, in cases where that is faster than a libcall. The first returned SDValue is the result of the strcmp and the second is the chain. Both SDValues can be null if a normal libcall should be used.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:132

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

Description

Emit target-specific code that performs a strcpy or stpcpy, in cases where that is faster than a libcall. The first returned SDValue is the result of the copy (the start of the destination string for strcpy, a pointer to the null terminator for stpcpy) and the second is the chain. Both SDValues can be null if a normal libcall should be used.

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:120

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:140

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:146

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 disableGenericCombines(
    CodeGenOpt::Level OptLevel) const

Declared at: llvm/include/llvm/CodeGen/SelectionDAGTargetInfo.h:161

Parameters

CodeGenOpt::Level OptLevel

virtual ~SelectionDAGTargetInfo()

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