setOperationAction(ISD::XOR, MVT::i8, Custom);
setOperationAction(ISD::FrameIndex, MVT::i16, Custom);
- setOperationAction(ISD::CALL, MVT::i16, Custom);
- setOperationAction(ISD::RET, MVT::Other, Custom);
setOperationAction(ISD::MUL, MVT::i8, Custom);
const Type *RetTy = RetVT.getTypeForMVT();
std::pair<SDValue,SDValue> CallInfo =
LowerCallTo(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
- false, 0, CallingConv::C, false, Callee, Args, DAG, dl);
+ false, 0, CallingConv::C, false,
+ /*isReturnValueUsed=*/true,
+ Callee, Args, DAG, dl);
return CallInfo.first;
}
case PIC16ISD::SUBCC: return "PIC16ISD::SUBCC";
case PIC16ISD::SELECT_ICC: return "PIC16ISD::SELECT_ICC";
case PIC16ISD::BRCOND: return "PIC16ISD::BRCOND";
+ case PIC16ISD::RET: return "PIC16ISD::RET";
case PIC16ISD::Dummy: return "PIC16ISD::Dummy";
}
}
SDValue Res;
unsigned i;
switch (Op.getOpcode()) {
- case ISD::FORMAL_ARGUMENTS:
- Res = LowerFORMAL_ARGUMENTS(Op, DAG); break;
case ISD::LOAD:
Res = ExpandLoad(Op.getNode(), DAG); break;
- case ISD::CALL:
- Res = LowerCALL(Op, DAG); break;
default: {
// All other operations are handled in LowerOperation.
Res = LowerOperation(Op, DAG);
SDValue PIC16TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) {
switch (Op.getOpcode()) {
- case ISD::FORMAL_ARGUMENTS:
- return LowerFORMAL_ARGUMENTS(Op, DAG);
case ISD::ADD:
case ISD::ADDC:
case ISD::ADDE:
case ISD::AND:
case ISD::XOR:
return LowerBinOp(Op, DAG);
- case ISD::CALL:
- return LowerCALL(Op, DAG);
- case ISD::RET:
- return LowerRET(Op, DAG);
case ISD::BR_CC:
return LowerBR_CC(Op, DAG);
case ISD::SELECT_CC:
}
SDValue PIC16TargetLowering::
-LowerIndirectCallArguments(SDValue Op, SDValue Chain, SDValue InFlag,
+LowerIndirectCallArguments(SDValue Chain, SDValue InFlag,
SDValue DataAddr_Lo, SDValue DataAddr_Hi,
- SelectionDAG &DAG) {
- CallSDNode *TheCall = dyn_cast<CallSDNode>(Op);
- unsigned NumOps = TheCall->getNumArgs();
- DebugLoc dl = TheCall->getDebugLoc();
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ DebugLoc dl, SelectionDAG &DAG) {
+ unsigned NumOps = Outs.size();
// If call has no arguments then do nothing and return.
if (NumOps == 0)
SDValue Arg, StoreRet;
// For PIC16 ABI the arguments come after the return value.
- unsigned RetVals = TheCall->getNumRetVals();
+ unsigned RetVals = Outs.size();
for (unsigned i = 0, ArgOffset = RetVals; i < NumOps; i++) {
// Get the arguments
- Arg = TheCall->getArg(i);
+ Arg = Outs[i].Val;
Ops.clear();
Ops.push_back(Chain);
}
SDValue PIC16TargetLowering::
-LowerDirectCallArguments(SDValue Op, SDValue Chain, SDValue ArgLabel,
- SDValue InFlag, SelectionDAG &DAG) {
- CallSDNode *TheCall = dyn_cast<CallSDNode>(Op);
- unsigned NumOps = TheCall->getNumArgs();
- DebugLoc dl = TheCall->getDebugLoc();
+LowerDirectCallArguments(SDValue ArgLabel, SDValue Chain, SDValue InFlag,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ DebugLoc dl, SelectionDAG &DAG) {
+ unsigned NumOps = Outs.size();
std::string Name;
SDValue Arg, StoreAt;
MVT ArgVT;
unsigned Size=0;
- unsigned ArgCount=0;
// If call has no arguments then do nothing and return.
if (NumOps == 0)
std::vector<SDValue> Ops;
SDVTList Tys = DAG.getVTList(MVT::Other, MVT::Flag);
- for (unsigned i=ArgCount, Offset = 0; i<NumOps; i++) {
+ for (unsigned i=0, Offset = 0; i<NumOps; i++) {
// Get the argument
- Arg = TheCall->getArg(i);
+ Arg = Outs[i].Val;
StoreOffset = (Offset + AddressOffset);
// Store the argument on frame
}
SDValue PIC16TargetLowering::
-LowerIndirectCallReturn (SDValue Op, SDValue Chain, SDValue InFlag,
- SDValue DataAddr_Lo, SDValue DataAddr_Hi,
- SelectionDAG &DAG) {
- CallSDNode *TheCall = dyn_cast<CallSDNode>(Op);
- DebugLoc dl = TheCall->getDebugLoc();
- unsigned RetVals = TheCall->getNumRetVals();
+LowerIndirectCallReturn(SDValue Chain, SDValue InFlag,
+ SDValue DataAddr_Lo, SDValue DataAddr_Hi,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) {
+ unsigned RetVals = Ins.size();
// If call does not have anything to return
// then do nothing and go back.
return Chain;
// Call has something to return
- std::vector<SDValue> ResultVals;
SDValue LoadRet;
SDVTList Tys = DAG.getVTList(MVT::i8, MVT::Other, MVT::Flag);
InFlag);
InFlag = getOutFlag(LoadRet);
Chain = getChain(LoadRet);
- ResultVals.push_back(LoadRet);
+ InVals.push_back(LoadRet);
}
- ResultVals.push_back(Chain);
- SDValue Res = DAG.getMergeValues(&ResultVals[0], ResultVals.size(), dl);
- return Res;
+ return Chain;
}
SDValue PIC16TargetLowering::
-LowerDirectCallReturn(SDValue Op, SDValue Chain, SDValue RetLabel,
- SDValue InFlag, SelectionDAG &DAG) {
- CallSDNode *TheCall = dyn_cast<CallSDNode>(Op);
- DebugLoc dl = TheCall->getDebugLoc();
+LowerDirectCallReturn(SDValue RetLabel, SDValue Chain, SDValue InFlag,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) {
+
// Currently handling primitive types only. They will come in
// i8 parts
- unsigned RetVals = TheCall->getNumRetVals();
-
- std::vector<SDValue> ResultVals;
+ unsigned RetVals = Ins.size();
// Return immediately if the return type is void
if (RetVals == 0)
Chain = getChain(LoadRet);
Offset++;
- ResultVals.push_back(LoadRet);
+ InVals.push_back(LoadRet);
}
- // To return use MERGE_VALUES
- ResultVals.push_back(Chain);
- SDValue Res = DAG.getMergeValues(&ResultVals[0], ResultVals.size(), dl);
- return Res;
+ return Chain;
}
-SDValue PIC16TargetLowering::LowerRET(SDValue Op, SelectionDAG &DAG) {
- SDValue Chain = Op.getOperand(0);
- DebugLoc dl = Op.getDebugLoc();
-
- if (Op.getNumOperands() == 1) // return void
- return Op;
+SDValue
+PIC16TargetLowering::LowerReturn(SDValue Chain,
+ unsigned CallConv, bool isVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ DebugLoc dl, SelectionDAG &DAG) {
- // return should have odd number of operands
- if ((Op.getNumOperands() % 2) == 0 ) {
- llvm_unreachable("Do not know how to return this many arguments!");
- }
-
// Number of values to return
- unsigned NumRet = (Op.getNumOperands() / 2);
+ unsigned NumRet = Outs.size();
// Function returns value always on stack with the offset starting
// from 0
SDValue BS = DAG.getConstant(1, MVT::i8);
SDValue RetVal;
for(unsigned i=0;i<NumRet; ++i) {
- RetVal = Op.getNode()->getOperand(2*i + 1);
+ RetVal = Outs[i].Val;
Chain = DAG.getNode (PIC16ISD::PIC16Store, dl, MVT::Other, Chain, RetVal,
ES, BS,
DAG.getConstant (i, MVT::i8));
}
- return DAG.getNode(ISD::RET, dl, MVT::Other, Chain);
-}
-
-// CALL node may have some operands non-legal to PIC16. Generate new CALL
-// node with all the operands legal.
-// Currently only Callee operand of the CALL node is non-legal. This function
-// legalizes the Callee operand and uses all other operands as are to generate
-// new CALL node.
-
-SDValue PIC16TargetLowering::LegalizeCALL(SDValue Op, SelectionDAG &DAG) {
- CallSDNode *TheCall = dyn_cast<CallSDNode>(Op);
- SDValue Chain = TheCall->getChain();
- SDValue Callee = TheCall->getCallee();
- DebugLoc dl = TheCall->getDebugLoc();
- unsigned i =0;
-
- assert(Callee.getValueType() == MVT::i16 &&
- "Don't know how to legalize this call node!!!");
- assert(Callee.getOpcode() == ISD::BUILD_PAIR &&
- "Don't know how to legalize this call node!!!");
-
- if (isDirectAddress(Callee)) {
- // Come here for direct calls
- Callee = Callee.getOperand(0).getOperand(0);
- } else {
- // Come here for indirect calls
- SDValue Lo, Hi;
- // Indirect addresses. Get the hi and lo parts of ptr.
- GetExpandedParts(Callee, DAG, Lo, Hi);
- // Connect Lo and Hi parts of the callee with the PIC16Connect
- Callee = DAG.getNode(PIC16ISD::PIC16Connect, dl, MVT::i8, Lo, Hi);
- }
- std::vector<SDValue> Ops;
- Ops.push_back(Chain);
- Ops.push_back(Callee);
-
- // Add the call arguments and their flags
- unsigned NumArgs = TheCall->getNumArgs();
- for(i=0;i<NumArgs;i++) {
- Ops.push_back(TheCall->getArg(i));
- Ops.push_back(TheCall->getArgFlagsVal(i));
- }
- std::vector<MVT> NodeTys;
- unsigned NumRets = TheCall->getNumRetVals();
- for(i=0;i<NumRets;i++)
- NodeTys.push_back(TheCall->getRetValType(i));
-
- // Return a Chain as well
- NodeTys.push_back(MVT::Other);
-
- SDVTList VTs = DAG.getVTList(&NodeTys[0], NodeTys.size());
- // Generate new call with all the operands legal
- return DAG.getCall(TheCall->getCallingConv(), dl,
- TheCall->isVarArg(), TheCall->isTailCall(),
- TheCall->isInreg(), VTs, &Ops[0], Ops.size(),
- TheCall->getNumFixedArgs());
+ return DAG.getNode(PIC16ISD::RET, dl, MVT::Other, Chain);
}
void PIC16TargetLowering::
DataAddr_Hi = DAG.getNode(PIC16ISD::MTHI, dl, MVT::i8, Call, OperFlag);
}
+SDValue
+PIC16TargetLowering::LowerCall(SDValue Chain, SDValue Callee,
+ unsigned CallConv, bool isVarArg,
+ bool isTailCall,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) {
-SDValue PIC16TargetLowering::LowerCALL(SDValue Op, SelectionDAG &DAG) {
- CallSDNode *TheCall = dyn_cast<CallSDNode>(Op);
- SDValue Chain = TheCall->getChain();
- SDValue Callee = TheCall->getCallee();
- DebugLoc dl = TheCall->getDebugLoc();
- if (Callee.getValueType() == MVT::i16 &&
- Callee.getOpcode() == ISD::BUILD_PAIR) {
- // Control should come here only from TypeLegalizer for lowering
-
- // Legalize the non-legal arguments of call and return the
- // new call with legal arguments.
- return LegalizeCALL(Op, DAG);
- }
- // Control should come here from Legalize DAG.
- // Here all the operands of CALL node should be legal.
-
- // If this is an indirect call then to pass the arguments
- // and read the return value back, we need the data address
- // of the function being called.
- // To get the data address two more calls need to be made.
+ assert(Callee.getValueType() == MVT::i16 &&
+ "Don't know how to legalize this call node!!!");
// The flag to track if this is a direct or indirect call.
bool IsDirectCall = true;
- unsigned RetVals = TheCall->getNumRetVals();
- unsigned NumArgs = TheCall->getNumArgs();
+ unsigned RetVals = Ins.size();
+ unsigned NumArgs = Outs.size();
SDValue DataAddr_Lo, DataAddr_Hi;
- if (Callee.getOpcode() == PIC16ISD::PIC16Connect) {
+ if (!isa<GlobalAddressSDNode>(Callee) &&
+ !isa<ExternalSymbolSDNode>(Callee)) {
IsDirectCall = false; // This is indirect call
+
+ // If this is an indirect call then to pass the arguments
+ // and read the return value back, we need the data address
+ // of the function being called.
+ // To get the data address two more calls need to be made.
+
+ // Come here for indirect calls
+ SDValue Lo, Hi;
+ // Indirect addresses. Get the hi and lo parts of ptr.
+ GetExpandedParts(Callee, DAG, Lo, Hi);
+ // Connect Lo and Hi parts of the callee with the PIC16Connect
+ Callee = DAG.getNode(PIC16ISD::PIC16Connect, dl, MVT::i8, Lo, Hi);
+
// Read DataAddress only if we have to pass arguments or
// read return value.
if ((RetVals > 0) || (NumArgs > 0))
// Pass the argument to function before making the call.
SDValue CallArgs;
if (IsDirectCall) {
- CallArgs = LowerDirectCallArguments(Op, Chain, ArgLabel, OperFlag, DAG);
+ CallArgs = LowerDirectCallArguments(ArgLabel, Chain, OperFlag,
+ Outs, dl, DAG);
Chain = getChain(CallArgs);
OperFlag = getOutFlag(CallArgs);
} else {
- CallArgs = LowerIndirectCallArguments(Op, Chain, OperFlag, DataAddr_Lo,
- DataAddr_Hi, DAG);
+ CallArgs = LowerIndirectCallArguments(Chain, OperFlag, DataAddr_Lo,
+ DataAddr_Hi, Outs, dl, DAG);
Chain = getChain(CallArgs);
OperFlag = getOutFlag(CallArgs);
}
// Lower the return value reading after the call.
if (IsDirectCall)
- return LowerDirectCallReturn(Op, Chain, RetLabel, OperFlag, DAG);
+ return LowerDirectCallReturn(RetLabel, Chain, OperFlag,
+ Ins, dl, DAG, InVals);
else
- return LowerIndirectCallReturn(Op, Chain, OperFlag, DataAddr_Lo,
- DataAddr_Hi, DAG);
+ return LowerIndirectCallReturn(Chain, OperFlag, DataAddr_Lo,
+ DataAddr_Hi, Ins, dl, DAG, InVals);
}
bool PIC16TargetLowering::isDirectLoad(const SDValue Op) {
ReservedFrameCount = NumArgs + 1;
}
-// LowerFORMAL_ARGUMENTS - Argument values are loaded from the
+// LowerFormalArguments - Argument values are loaded from the
// <fname>.args + offset. All arguments are already broken to leaglized
// types, so the offset just runs from 0 to NumArgVals - 1.
-SDValue PIC16TargetLowering::LowerFORMAL_ARGUMENTS(SDValue Op,
- SelectionDAG &DAG) {
- SmallVector<SDValue, 8> ArgValues;
- unsigned NumArgVals = Op.getNode()->getNumValues() - 1;
- DebugLoc dl = Op.getDebugLoc();
- SDValue Chain = Op.getOperand(0); // Formal arguments' chain
-
+SDValue
+PIC16TargetLowering::LowerFormalArguments(SDValue Chain,
+ unsigned CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl,
+ SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) {
+ unsigned NumArgVals = Ins.size();
// Get the callee's name to create the <fname>.args label to pass args.
MachineFunction &MF = DAG.getMachineFunction();
SDValue PICLoad = DAG.getNode(PIC16ISD::PIC16LdArg, dl, VTs, Chain, ES, BS,
Offset);
Chain = getChain(PICLoad);
- ArgValues.push_back(PICLoad);
+ InVals.push_back(PICLoad);
}
- // Return a MERGE_VALUE node.
- ArgValues.push_back(Op.getOperand(0));
- return DAG.getNode(ISD::MERGE_VALUES, dl, Op.getNode()->getVTList(),
- &ArgValues[0], ArgValues.size()).getValue(Op.getResNo());
+ return Chain;
}
// Perform DAGCombine of PIC16Load.
projects / oota-llvm.git / blobdiff