Targets can subclass this to parameterize the SelectionDAG lowering and instruction selection process. More...
#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
Public Member Functions | |
| SelectionDAGTargetInfo ()=default | |
| SelectionDAGTargetInfo (const SelectionDAGTargetInfo &)=delete | |
| SelectionDAGTargetInfo & | operator= (const SelectionDAGTargetInfo &)=delete |
| virtual | ~SelectionDAGTargetInfo () |
| virtual SDValue | EmitTargetCodeForMemcpy (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, SDValue Op3, Align Alignment, bool isVolatile, bool AlwaysInline, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const |
| Emit target-specific code that performs a memcpy. | |
| virtual SDValue | EmitTargetCodeForMemmove (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, SDValue Op3, Align Alignment, bool isVolatile, MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const |
| Emit target-specific code that performs a memmove. | |
| virtual SDValue | EmitTargetCodeForMemset (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Op1, SDValue Op2, SDValue Op3, Align Alignment, bool isVolatile, bool AlwaysInline, MachinePointerInfo DstPtrInfo) const |
| Emit target-specific code that performs a memset. | |
| virtual std::pair< SDValue, SDValue > | EmitTargetCodeForMemcmp (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/bcmp, in cases where that is faster than a libcall. | |
| virtual std::pair< SDValue, SDValue > | EmitTargetCodeForMemchr (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. | |
| virtual std::pair< SDValue, SDValue > | EmitTargetCodeForStrcpy (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. | |
| virtual std::pair< SDValue, SDValue > | EmitTargetCodeForStrcmp (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. | |
| virtual std::pair< SDValue, SDValue > | EmitTargetCodeForStrlen (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, MachinePointerInfo SrcPtrInfo) const |
| virtual std::pair< SDValue, SDValue > | EmitTargetCodeForStrnlen (SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src, SDValue MaxLength, MachinePointerInfo SrcPtrInfo) const |
| virtual SDValue | EmitTargetCodeForSetTag (SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Addr, SDValue Size, MachinePointerInfo DstPtrInfo, bool ZeroData) const |
| virtual bool | disableGenericCombines (CodeGenOptLevel OptLevel) const |
Detailed Description
Targets can subclass this to parameterize the SelectionDAG lowering and instruction selection process.
Definition at line 31 of file SelectionDAGTargetInfo.h.
Constructor & Destructor Documentation
◆ SelectionDAGTargetInfo() [1/2]
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explicitdefault |
◆ SelectionDAGTargetInfo() [2/2]
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delete |
◆ ~SelectionDAGTargetInfo()
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virtualdefault |
Member Function Documentation
◆ disableGenericCombines()
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inlinevirtual |
Definition at line 161 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForMemchr()
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inlinevirtual |
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 in llvm::SystemZSelectionDAGInfo.
Definition at line 107 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForMemcmp()
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inlinevirtual |
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.
Reimplemented in llvm::SystemZSelectionDAGInfo.
Definition at line 95 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForMemcpy()
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inlinevirtual |
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 in llvm::AArch64SelectionDAGInfo, llvm::ARMSelectionDAGInfo, llvm::BPFSelectionDAGInfo, llvm::HexagonSelectionDAGInfo, llvm::LanaiSelectionDAGInfo, llvm::SystemZSelectionDAGInfo, llvm::X86SelectionDAGInfo, llvm::WebAssemblySelectionDAGInfo, and llvm::XCoreSelectionDAGInfo.
Definition at line 51 of file SelectionDAGTargetInfo.h.
Referenced by llvm::SelectionDAG::getMemcpy().
◆ EmitTargetCodeForMemmove()
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inlinevirtual |
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 in llvm::AArch64SelectionDAGInfo, llvm::ARMSelectionDAGInfo, and llvm::WebAssemblySelectionDAGInfo.
Definition at line 67 of file SelectionDAGTargetInfo.h.
Referenced by llvm::SelectionDAG::getMemmove().
◆ EmitTargetCodeForMemset()
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inlinevirtual |
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.
Reimplemented in llvm::SystemZSelectionDAGInfo, llvm::AArch64SelectionDAGInfo, llvm::X86SelectionDAGInfo, llvm::ARMSelectionDAGInfo, and llvm::WebAssemblySelectionDAGInfo.
Definition at line 81 of file SelectionDAGTargetInfo.h.
Referenced by llvm::SelectionDAG::getMemset().
◆ EmitTargetCodeForSetTag()
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inlinevirtual |
Reimplemented in llvm::AArch64SelectionDAGInfo.
Definition at line 152 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForStrcmp()
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inlinevirtual |
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 in llvm::SystemZSelectionDAGInfo.
Definition at line 132 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForStrcpy()
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inlinevirtual |
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 in llvm::SystemZSelectionDAGInfo.
Definition at line 120 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForStrlen()
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inlinevirtual |
Reimplemented in llvm::SystemZSelectionDAGInfo.
Definition at line 140 of file SelectionDAGTargetInfo.h.
◆ EmitTargetCodeForStrnlen()
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inlinevirtual |
Reimplemented in llvm::SystemZSelectionDAGInfo.
Definition at line 146 of file SelectionDAGTargetInfo.h.
◆ operator=()
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delete |
The documentation for this class was generated from the following files:
- include/llvm/CodeGen/SelectionDAGTargetInfo.h
- lib/CodeGen/SelectionDAG/SelectionDAGTargetInfo.cpp
