virtual SDOperand LowerReturnTo(SDOperand Chain, SDOperand Op,
SelectionDAG &DAG);
- virtual SDOperand LowerVAStart(SDOperand Chain, SDOperand VAListP,
- Value *VAListV, SelectionDAG &DAG);
- virtual std::pair<SDOperand,SDOperand>
- LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
- const Type *ArgTy, SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG);
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::DEBUG_LABEL, MVT::Other, Expand);
- // Expand these to their default code.
- setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
- setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
+ // VASTART needs to be custom lowered to use the VarArgsFrameIndex
+ setOperationAction(ISD::VASTART , MVT::Other, Custom);
+
+ // Use the default implementation.
+ setOperationAction(ISD::VAARG , MVT::Other, Expand);
+ setOperationAction(ISD::VACOPY , MVT::Other, Expand);
+ setOperationAction(ISD::VAEND , MVT::Other, Expand);
+ setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
+ setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Expand);
setSchedulingPreference(SchedulingForLatency);
return DAG.getNode(V8ISD::RET_FLAG, MVT::Other, Copy, Copy.getValue(1));
}
-SDOperand SparcV8TargetLowering::
-LowerVAStart(SDOperand Chain, SDOperand VAListP, Value *VAListV,
- SelectionDAG &DAG) {
-
- SDOperand Offset = DAG.getNode(ISD::ADD, MVT::i32,
- DAG.getRegister(V8::I6, MVT::i32),
- DAG.getConstant(VarArgsFrameOffset, MVT::i32));
- return DAG.getNode(ISD::STORE, MVT::Other, Chain, Offset,
- VAListP, DAG.getSrcValue(VAListV));
-}
-
-std::pair<SDOperand,SDOperand> SparcV8TargetLowering::
-LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
- const Type *ArgTy, SelectionDAG &DAG) {
- // Load the pointer out of the valist.
- SDOperand Ptr = DAG.getLoad(MVT::i32, Chain,
- VAListP, DAG.getSrcValue(VAListV));
- MVT::ValueType ArgVT = getValueType(ArgTy);
- SDOperand Val = DAG.getLoad(ArgVT, Ptr.getValue(1),
- Ptr, DAG.getSrcValue(NULL));
- // Increment the pointer.
- Ptr = DAG.getNode(ISD::ADD, MVT::i32, Ptr,
- DAG.getConstant(MVT::getSizeInBits(ArgVT)/8, MVT::i32));
- // Store it back to the valist.
- Chain = DAG.getNode(ISD::STORE, MVT::Other, Chain, Ptr,
- VAListP, DAG.getSrcValue(VAListV));
- return std::make_pair(Val, Chain);
-}
-
std::pair<SDOperand, SDOperand> SparcV8TargetLowering::
LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG) {
return DAG.getNode(Opc, TrueVal.getValueType(), TrueVal, FalseVal,
DAG.getConstant(CC, MVT::i32), CompareFlag);
}
+ case ISD::VASTART: {
+ // vastart just stores the address of the VarArgsFrameIndex slot into the
+ // memory location argument.
+ SDOperand Offset = DAG.getNode(ISD::ADD, MVT::i32,
+ DAG.getRegister(V8::I6, MVT::i32),
+ DAG.getConstant(VarArgsFrameOffset, MVT::i32));
+ return DAG.getNode(ISD::STORE, MVT::Other, Op.getOperand(0), Offset,
+ Op.getOperand(1), Op.getOperand(2));
+ }
}
}