namespace llvm {
-class DataLayout;
-class TargetMachine;
-
//===----------------------------------------------------------------------===//
-/// TargetSelectionDAGInfo - Targets can subclass this to parameterize the
+/// Targets can subclass this to parameterize the
/// SelectionDAG lowering and instruction selection process.
///
class TargetSelectionDAGInfo {
- TargetSelectionDAGInfo(const TargetSelectionDAGInfo &) LLVM_DELETED_FUNCTION;
- void operator=(const TargetSelectionDAGInfo &) LLVM_DELETED_FUNCTION;
-
- const DataLayout *TD;
-
-protected:
- const DataLayout *getDataLayout() const { return TD; }
+ TargetSelectionDAGInfo(const TargetSelectionDAGInfo &) = delete;
+ void operator=(const TargetSelectionDAGInfo &) = delete;
public:
- explicit TargetSelectionDAGInfo(const TargetMachine &TM);
+ explicit TargetSelectionDAGInfo() = default;
virtual ~TargetSelectionDAGInfo();
- /// EmitTargetCodeForMemcpy - Emit target-specific code that performs a
- /// memcpy. This can be used by targets to provide code sequences for cases
+ /// 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
return SDValue();
}
- /// EmitTargetCodeForMemmove - Emit target-specific code that performs a
- /// memmove. This can be used by targets to provide code sequences for cases
+ /// 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
return SDValue();
}
- /// EmitTargetCodeForMemset - Emit target-specific code that performs a
- /// memset. This can be used by targets to provide code sequences for cases
+ /// 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
return SDValue();
}
- /// EmitTargetCodeForMemcmp - 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.
+ /// 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.
virtual std::pair<SDValue, SDValue>
EmitTargetCodeForMemcmp(SelectionDAG &DAG, SDLoc dl,
SDValue Chain,
return std::make_pair(SDValue(), SDValue());
}
- /// EmitTargetCodeForStrcpy - Emit target-specific code that performs a
- /// strcpy or stpcpy, in cases where that is faster than a libcall.
+ /// 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.
+ virtual std::pair<SDValue, SDValue>
+ EmitTargetCodeForMemchr(SelectionDAG &DAG, SDLoc dl, SDValue Chain,
+ SDValue Src, SDValue Char, SDValue Length,
+ MachinePointerInfo SrcPtrInfo) const {
+ return std::make_pair(SDValue(), SDValue());
+ }
+
+ /// 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
return std::make_pair(SDValue(), SDValue());
}
- /// EmitTargetCodeForStrcmp - 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.
+ /// 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.
virtual std::pair<SDValue, SDValue>
EmitTargetCodeForStrcmp(SelectionDAG &DAG, SDLoc dl,
SDValue Chain,
MachinePointerInfo Op2PtrInfo) const {
return std::make_pair(SDValue(), SDValue());
}
+
+ virtual std::pair<SDValue, SDValue>
+ EmitTargetCodeForStrlen(SelectionDAG &DAG, SDLoc DL, SDValue Chain,
+ SDValue Src, MachinePointerInfo SrcPtrInfo) const {
+ return std::make_pair(SDValue(), SDValue());
+ }
+
+ virtual std::pair<SDValue, SDValue>
+ EmitTargetCodeForStrnlen(SelectionDAG &DAG, SDLoc DL, SDValue Chain,
+ SDValue Src, SDValue MaxLength,
+ MachinePointerInfo SrcPtrInfo) const {
+ return std::make_pair(SDValue(), SDValue());
+ }
};
} // end llvm namespace
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