LLVM  6.0.0svn
Public Member Functions | List of all members
llvm::ARMSelectionDAGInfo Class Reference

#include "Target/ARM/ARMSelectionDAGInfo.h"

Inheritance diagram for llvm::ARMSelectionDAGInfo:
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Public Member Functions

SDValue EmitTargetCodeForMemcpy (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src, SDValue Size, unsigned Align, bool isVolatile, bool AlwaysInline, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const override
 Emit target-specific code that performs a memcpy. More...
 
SDValue EmitTargetCodeForMemmove (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src, SDValue Size, unsigned Align, bool isVolatile, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const override
 Emit target-specific code that performs a memmove. More...
 
SDValue EmitTargetCodeForMemset (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, SDValue Op3, unsigned Align, bool isVolatile, MachinePointerInfo DstPtrInfo) const override
 Emit target-specific code that performs a memset. More...
 
SDValue EmitSpecializedLibcall (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src, SDValue Size, unsigned Align, RTLIB::Libcall LC) const
 
- Public Member Functions inherited from llvm::SelectionDAGTargetInfo
 SelectionDAGTargetInfo ()=default
 
 SelectionDAGTargetInfo (const SelectionDAGTargetInfo &)=delete
 
SelectionDAGTargetInfooperator= (const SelectionDAGTargetInfo &)=delete
 
virtual ~SelectionDAGTargetInfo ()
 
virtual std::pair< SDValue, SDValueEmitTargetCodeForMemcmp (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, SDValue Op3, MachinePointerInfo Op1PtrInfo, MachinePointerInfo Op2PtrInfo) const
 Emit target-specific code that performs a memcmp, in cases where that is faster than a libcall. More...
 
virtual std::pair< SDValue, SDValueEmitTargetCodeForMemchr (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Src, SDValue Char, SDValue Length, MachinePointerInfo SrcPtrInfo) const
 Emit target-specific code that performs a memchr, in cases where that is faster than a libcall. More...
 
virtual std::pair< SDValue, SDValueEmitTargetCodeForStrcpy (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dest, SDValue Src, MachinePointerInfo DestPtrInfo, MachinePointerInfo SrcPtrInfo, bool isStpcpy) const
 Emit target-specific code that performs a strcpy or stpcpy, in cases where that is faster than a libcall. More...
 
virtual std::pair< SDValue, SDValueEmitTargetCodeForStrcmp (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, MachinePointerInfo Op1PtrInfo, MachinePointerInfo Op2PtrInfo) const
 Emit target-specific code that performs a strcmp, in cases where that is faster than a libcall. More...
 
virtual std::pair< SDValue, SDValueEmitTargetCodeForStrlen (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, MachinePointerInfo SrcPtrInfo) const
 
virtual std::pair< SDValue, SDValueEmitTargetCodeForStrnlen (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, SDValue MaxLength, MachinePointerInfo SrcPtrInfo) const
 
virtual bool generateFMAsInMachineCombiner (CodeGenOpt::Level OptLevel) const
 

Detailed Description

Definition at line 39 of file ARMSelectionDAGInfo.h.

Member Function Documentation

◆ EmitSpecializedLibcall()

SDValue ARMSelectionDAGInfo::EmitSpecializedLibcall ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Dst,
SDValue  Src,
SDValue  Size,
unsigned  Align,
RTLIB::Libcall  LC 
) const

◆ EmitTargetCodeForMemcpy()

SDValue ARMSelectionDAGInfo::EmitTargetCodeForMemcpy ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Op1,
SDValue  Op2,
SDValue  Op3,
unsigned  Align,
bool  isVolatile,
bool  AlwaysInline,
MachinePointerInfo  DstPtrInfo,
MachinePointerInfo  SrcPtrInfo 
) const
overridevirtual

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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 128 of file ARMSelectionDAGInfo.cpp.

References llvm::ISD::ADD, llvm::dyn_cast(), EmitSpecializedLibcall(), llvm::SelectionDAG::getConstant(), llvm::MachineFunction::getFunction(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMachineFunction(), llvm::ARMSubtarget::getMaxInlineSizeThreshold(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getStore(), llvm::MachineFunction::getSubtarget(), llvm::SDValue::getValue(), llvm::SelectionDAG::getVTList(), llvm::MachinePointerInfo::getWithOffset(), llvm::ConstantSDNode::getZExtValue(), llvm::MVT::Glue, I, llvm::MVT::i16, llvm::MVT::i32, llvm::MVT::i8, llvm::ARMSubtarget::isThumb1Only(), llvm::makeArrayRef(), llvm::ARMISD::MEMCPY, llvm::Function::optForMinSize(), llvm::MVT::Other, llvm::AMDGPU::HSAMD::Kernel::Arg::Key::Size, and llvm::ISD::TokenFactor.

◆ EmitTargetCodeForMemmove()

SDValue ARMSelectionDAGInfo::EmitTargetCodeForMemmove ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Op1,
SDValue  Op2,
SDValue  Op3,
unsigned  Align,
bool  isVolatile,
MachinePointerInfo  DstPtrInfo,
MachinePointerInfo  SrcPtrInfo 
) const
overridevirtual

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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 242 of file ARMSelectionDAGInfo.cpp.

References EmitSpecializedLibcall().

◆ EmitTargetCodeForMemset()

SDValue ARMSelectionDAGInfo::EmitTargetCodeForMemset ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Op1,
SDValue  Op2,
SDValue  Op3,
unsigned  Align,
bool  isVolatile,
MachinePointerInfo  DstPtrInfo 
) const
overridevirtual

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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 250 of file ARMSelectionDAGInfo.cpp.

References EmitSpecializedLibcall().


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