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

#include "Target/SystemZ/SystemZSelectionDAGInfo.h"

Inheritance diagram for llvm::SystemZSelectionDAGInfo:
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Collaboration diagram for llvm::SystemZSelectionDAGInfo:
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Public Member Functions

 SystemZSelectionDAGInfo ()=default
 
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 EmitTargetCodeForMemset (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Byte, SDValue Size, unsigned Align, bool IsVolatile, MachinePointerInfo DstPtrInfo) const override
 Emit target-specific code that performs a memset. More...
 
std::pair< SDValue, SDValueEmitTargetCodeForMemcmp (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src1, SDValue Src2, SDValue Size, MachinePointerInfo Op1PtrInfo, MachinePointerInfo Op2PtrInfo) const override
 Emit target-specific code that performs a memcmp, in cases where that is faster than a libcall. More...
 
std::pair< SDValue, SDValueEmitTargetCodeForMemchr (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, SDValue Char, SDValue Length, MachinePointerInfo SrcPtrInfo) const override
 Emit target-specific code that performs a memchr, in cases where that is faster than a libcall. More...
 
std::pair< SDValue, SDValueEmitTargetCodeForStrcpy (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dest, SDValue Src, MachinePointerInfo DestPtrInfo, MachinePointerInfo SrcPtrInfo, bool isStpcpy) const override
 Emit target-specific code that performs a strcpy or stpcpy, in cases where that is faster than a libcall. More...
 
std::pair< SDValue, SDValueEmitTargetCodeForStrcmp (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src1, SDValue Src2, MachinePointerInfo Op1PtrInfo, MachinePointerInfo Op2PtrInfo) const override
 Emit target-specific code that performs a strcmp, in cases where that is faster than a libcall. More...
 
std::pair< SDValue, SDValueEmitTargetCodeForStrlen (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, MachinePointerInfo SrcPtrInfo) const override
 
std::pair< SDValue, SDValueEmitTargetCodeForStrnlen (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, SDValue MaxLength, MachinePointerInfo SrcPtrInfo) const override
 
- Public Member Functions inherited from llvm::SelectionDAGTargetInfo
 SelectionDAGTargetInfo ()=default
 
 SelectionDAGTargetInfo (const SelectionDAGTargetInfo &)=delete
 
SelectionDAGTargetInfooperator= (const SelectionDAGTargetInfo &)=delete
 
virtual ~SelectionDAGTargetInfo ()
 
virtual SDValue EmitTargetCodeForMemmove (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, SDValue Op3, unsigned Align, bool isVolatile, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const
 Emit target-specific code that performs a memmove. More...
 
virtual bool generateFMAsInMachineCombiner (CodeGenOpt::Level OptLevel) const
 

Detailed Description

Definition at line 23 of file SystemZSelectionDAGInfo.h.

Constructor & Destructor Documentation

◆ SystemZSelectionDAGInfo()

llvm::SystemZSelectionDAGInfo::SystemZSelectionDAGInfo ( )
explicitdefault

Member Function Documentation

◆ EmitTargetCodeForMemchr()

std::pair< SDValue, SDValue > SystemZSelectionDAGInfo::EmitTargetCodeForMemchr ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Src,
SDValue  Char,
SDValue  Length,
MachinePointerInfo  SrcPtrInfo 
) const
overridevirtual

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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 194 of file SystemZSelectionDAGInfo.cpp.

References llvm::ISD::ADD, llvm::ISD::AND, llvm::SystemZ::CCMASK_SRST, llvm::SystemZ::CCMASK_SRST_FOUND, llvm::WebAssembly::End, llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getValue(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getVTList(), llvm::SelectionDAG::getZExtOrTrunc(), llvm::MVT::Glue, llvm::MVT::i32, llvm::MVT::Other, llvm::SystemZISD::SEARCH_STRING, and llvm::SystemZISD::SELECT_CCMASK.

◆ EmitTargetCodeForMemcmp()

std::pair< SDValue, SDValue > SystemZSelectionDAGInfo::EmitTargetCodeForMemcmp ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Op1,
SDValue  Op2,
SDValue  Op3,
MachinePointerInfo  Op1PtrInfo,
MachinePointerInfo  Op2PtrInfo 
) const
overridevirtual

Emit target-specific code that performs a memcmp, 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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 180 of file SystemZSelectionDAGInfo.cpp.

References addIPMSequence(), assert(), emitCLC(), and llvm::SDValue::getValue().

◆ EmitTargetCodeForMemcpy()

SDValue SystemZSelectionDAGInfo::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 49 of file SystemZSelectionDAGInfo.cpp.

References emitMemMem(), llvm::SystemZISD::MVC, and llvm::SystemZISD::MVC_LOOP.

◆ EmitTargetCodeForMemset()

SDValue SystemZSelectionDAGInfo::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 76 of file SystemZSelectionDAGInfo.cpp.

References llvm::ISD::ADD, assert(), llvm::countPopulation(), llvm::dyn_cast(), emitMemMem(), llvm::findLastSet(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getStore(), llvm::SDValue::getValueType(), llvm::MachinePointerInfo::getWithOffset(), memsetStore(), llvm::SystemZISD::MVC, llvm::SystemZISD::MVC_LOOP, llvm::MVT::Other, llvm::ISD::TokenFactor, llvm::SystemZISD::XC, and llvm::SystemZISD::XC_LOOP.

◆ EmitTargetCodeForStrcmp()

std::pair< SDValue, SDValue > SystemZSelectionDAGInfo::EmitTargetCodeForStrcmp ( SelectionDAG DAG,
const SDLoc dl,
SDValue  Chain,
SDValue  Op1,
SDValue  Op2,
MachinePointerInfo  Op1PtrInfo,
MachinePointerInfo  Op2PtrInfo 
) const
overridevirtual

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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 231 of file SystemZSelectionDAGInfo.cpp.

References addIPMSequence(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getValue(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::Glue, llvm::MVT::i32, llvm::MVT::Other, and llvm::SystemZISD::STRCMP.

◆ EmitTargetCodeForStrcpy()

std::pair< SDValue, SDValue > SystemZSelectionDAGInfo::EmitTargetCodeForStrcpy ( SelectionDAG DAG,
const SDLoc DL,
SDValue  Chain,
SDValue  Dest,
SDValue  Src,
MachinePointerInfo  DestPtrInfo,
MachinePointerInfo  SrcPtrInfo,
bool  isStpcpy 
) const
overridevirtual

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.

Reimplemented from llvm::SelectionDAGTargetInfo.

Definition at line 221 of file SystemZSelectionDAGInfo.cpp.

References llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getNode(), llvm::SDValue::getValue(), llvm::SDValue::getValueType(), llvm::SelectionDAG::getVTList(), llvm::MVT::i32, llvm::MVT::Other, and llvm::SystemZISD::STPCPY.

◆ EmitTargetCodeForStrlen()

std::pair< SDValue, SDValue > SystemZSelectionDAGInfo::EmitTargetCodeForStrlen ( SelectionDAG DAG,
const SDLoc DL,
SDValue  Chain,
SDValue  Src,
MachinePointerInfo  SrcPtrInfo 
) const
overridevirtual

◆ EmitTargetCodeForStrnlen()

std::pair< SDValue, SDValue > SystemZSelectionDAGInfo::EmitTargetCodeForStrnlen ( SelectionDAG DAG,
const SDLoc DL,
SDValue  Chain,
SDValue  Src,
SDValue  MaxLength,
MachinePointerInfo  SrcPtrInfo 
) const
overridevirtual

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