+
+ /// 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.
+ virtual std::pair<SDValue, SDValue>
+ EmitTargetCodeForMemcmp(SelectionDAG &DAG, SDLoc dl,
+ SDValue Chain,
+ SDValue Op1, SDValue Op2,
+ SDValue Op3, MachinePointerInfo Op1PtrInfo,
+ MachinePointerInfo Op2PtrInfo) const {
+ return std::make_pair(SDValue(), SDValue());
+ }
+
+ /// EmitTargetCodeForMemchr - 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());
+ }
+
+ /// EmitTargetCodeForStrcpy - 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.
+ virtual std::pair<SDValue, SDValue>
+ EmitTargetCodeForStrcpy(SelectionDAG &DAG, SDLoc DL, SDValue Chain,
+ SDValue Dest, SDValue Src,
+ MachinePointerInfo DestPtrInfo,
+ MachinePointerInfo SrcPtrInfo,
+ bool isStpcpy) const {
+ 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.
+ virtual std::pair<SDValue, SDValue>
+ EmitTargetCodeForStrcmp(SelectionDAG &DAG, SDLoc dl,
+ SDValue Chain,
+ SDValue Op1, SDValue Op2,
+ MachinePointerInfo Op1PtrInfo,
+ 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());
+ }