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llvm-65816
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Add placeholder implementations of a couple more methods. At this point, I can "compile": 

int theAnswer(void)
{
return 42;
}

It compiles in the sense that clang executes to the end without crashing but the .s file it produces is useless.  But another small step forward.
This commit is contained in:
Jeremy Rand 2015-07-30 23:29:36 -04:00
parent 9d6408d419
commit 4862a6612b
6 changed files with 51 additions and 43 deletions
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9
lib/Target/WDC65816/WDC65816AsmPrinter.cpp
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@ -86,22 +86,19 @@ namespace {
void WDC65816AsmPrinter::printOperand(const MachineInstr *MI, int opNum,
raw_ostream &O) {
// WDC_TODO - print the operand here...
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
}
void WDC65816AsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
raw_ostream &O, const char *Modifier) {
// WDC_TODO - print the memory operand here...
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
}
bool WDC65816AsmPrinter::printGetPCX(const MachineInstr *MI, unsigned opNum,
raw_ostream &O) {
// WDC_TODO - print whatever this is here...
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
return true;
}

6
lib/Target/WDC65816/WDC65816FrameLowering.cpp
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@ -27,19 +27,19 @@ using namespace llvm;
// hasFP - Whether or not there is a frame pointer.
// WDC_TODO - for now we will say we always have a frame pointer.
bool WDC65816FrameLowering::hasFP(const MachineFunction &MF) const {
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
return true;
}
void WDC65816FrameLowering::emitPrologue(MachineFunction &MF) const {
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
}
void WDC65816FrameLowering::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
}

13
lib/Target/WDC65816/WDC65816ISelDAGToDAG.cpp
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@ -70,7 +70,7 @@ namespace {
SDNode* WDC65816DAGToDAGISel::getGlobalBaseReg() {
unsigned GlobalBaseReg = TM.getInstrInfo()->getGlobalBaseReg(MF);
WDC_LOG("This method is probably implemented wrong...");
WDC_LOG("WDC_TODO - This method is probably implemented wrong...");
return CurDAG->getRegister(GlobalBaseReg,
getTargetLowering()->getPointerTy()).getNode();
}
@ -79,22 +79,19 @@ SDNode* WDC65816DAGToDAGISel::getGlobalBaseReg() {
bool WDC65816DAGToDAGISel::SelectAbs(SDValue N, SDValue &R1) {
// WDC_TODO - Write something here
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
return false;
}
bool WDC65816DAGToDAGISel::SelectAbsLong(SDValue N, SDValue &R1) {
// WDC_TODO - Write something here
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
return false;
}
bool WDC65816DAGToDAGISel::SelectDirectPage(SDValue N, SDValue &R1) {
// WDC_TODO - Write something here
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
return false;
}
@ -170,7 +167,7 @@ bool SparcDAGToDAGISel::SelectADDRrr(SDValue Addr, SDValue &R1, SDValue &R2) {
#endif
SDNode *WDC65816DAGToDAGISel::Select(SDNode *N) {
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
return NULL;
#if 0 // WDC_TODO - we will definitely need something here
SDLoc dl(N);

34
lib/Target/WDC65816/WDC65816ISelLowering.cpp
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@ -151,6 +151,30 @@ static bool CC_WDC6581664_Half(unsigned &ValNo, MVT &ValVT,
#include "WDC65816GenCallingConv.inc"
SDValue WDC65816TargetLowering::LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
bool IsVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc DL,
SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const {
WDC_LOG("WDC_TODO - Not implemented yet!");
return Chain;
}
SDValue
WDC65816TargetLowering::LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc DL, SelectionDAG &DAG) const {
WDC_LOG("WDC_TODO - Not implemented yet!");
return Chain;
}
#if 0 // WDC_TODO - Get rid of this?
// The calling conventions in WDC65816CallingConv.td are described in terms of the
// callee's register window. This function translates registers to the
@ -164,16 +188,6 @@ static unsigned toCallerWindow(unsigned Reg) {
#endif
#if 0 // WDC_TODO - Disable more stuff
SDValue
WDC65816TargetLowering::LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc DL, SelectionDAG &DAG) const {
if (Subtarget->is64Bit())
return LowerReturn_64(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
return LowerReturn_32(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
}
SDValue
WDC65816TargetLowering::LowerReturn_32(SDValue Chain,

29
lib/Target/WDC65816/WDC65816ISelLowering.h
View File

@ -57,6 +57,21 @@ namespace llvm {
public:
WDC65816TargetLowering(TargetMachine &TM);
virtual SDValue
LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc dl, SelectionDAG &DAG) const;
#if 0 // WDC_TODO - Do I need any of this?
virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
@ -84,14 +99,6 @@ namespace llvm {
/// getSetCCResultType - Return the ISD::SETCC ValueType
virtual EVT getSetCCResultType(LLVMContext &Context, EVT VT) const;
virtual SDValue
LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
SDValue LowerFormalArguments_32(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
@ -113,12 +120,6 @@ namespace llvm {
SDValue LowerCall_64(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc dl, SelectionDAG &DAG) const;
SDValue LowerReturn_32(SDValue Chain,
CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,

3
lib/Target/WDC65816/WDC65816RegisterInfo.cpp
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@ -85,8 +85,7 @@ void
WDC65816RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
int SPAdj, unsigned FIOperandNum,
RegScavenger *RS) const {
// WDC_TODO - Write something here...
WDC_LOG("Unimplemented method called");
WDC_LOG("WDC_TODO - Unimplemented method called");
}
#if 0 // TODO - How much of this stuff do I need?