bool MIRParserImpl::initializeFrameInfo( const Function &F, MachineFrameInfo &MFI, const yaml::MachineFunction &YamlMF, DenseMap<unsigned, int> &StackObjectSlots, DenseMap<unsigned, int> &FixedStackObjectSlots) { const yaml::MachineFrameInfo &YamlMFI = YamlMF.FrameInfo; MFI.setFrameAddressIsTaken(YamlMFI.IsFrameAddressTaken); MFI.setReturnAddressIsTaken(YamlMFI.IsReturnAddressTaken); MFI.setHasStackMap(YamlMFI.HasStackMap); MFI.setHasPatchPoint(YamlMFI.HasPatchPoint); MFI.setStackSize(YamlMFI.StackSize); MFI.setOffsetAdjustment(YamlMFI.OffsetAdjustment); if (YamlMFI.MaxAlignment) MFI.ensureMaxAlignment(YamlMFI.MaxAlignment); MFI.setAdjustsStack(YamlMFI.AdjustsStack); MFI.setHasCalls(YamlMFI.HasCalls); MFI.setMaxCallFrameSize(YamlMFI.MaxCallFrameSize); MFI.setHasOpaqueSPAdjustment(YamlMFI.HasOpaqueSPAdjustment); MFI.setHasVAStart(YamlMFI.HasVAStart); MFI.setHasMustTailInVarArgFunc(YamlMFI.HasMustTailInVarArgFunc); // Initialize the fixed frame objects. for (const auto &Object : YamlMF.FixedStackObjects) { int ObjectIdx; if (Object.Type != yaml::FixedMachineStackObject::SpillSlot) ObjectIdx = MFI.CreateFixedObject(Object.Size, Object.Offset, Object.IsImmutable, Object.IsAliased); else ObjectIdx = MFI.CreateFixedSpillStackObject(Object.Size, Object.Offset); MFI.setObjectAlignment(ObjectIdx, Object.Alignment); // TODO: Report an error when objects are redefined. FixedStackObjectSlots.insert(std::make_pair(Object.ID, ObjectIdx)); } // Initialize the ordinary frame objects. for (const auto &Object : YamlMF.StackObjects) { int ObjectIdx; const AllocaInst *Alloca = nullptr; const yaml::StringValue &Name = Object.Name; if (!Name.Value.empty()) { Alloca = dyn_cast_or_null<AllocaInst>( F.getValueSymbolTable().lookup(Name.Value)); if (!Alloca) return error(Name.SourceRange.Start, "alloca instruction named '" + Name.Value + "' isn't defined in the function '" + F.getName() + "'"); } if (Object.Type == yaml::MachineStackObject::VariableSized) ObjectIdx = MFI.CreateVariableSizedObject(Object.Alignment, Alloca); else ObjectIdx = MFI.CreateStackObject( Object.Size, Object.Alignment, Object.Type == yaml::MachineStackObject::SpillSlot, Alloca); MFI.setObjectOffset(ObjectIdx, Object.Offset); // TODO: Report an error when objects are redefined. StackObjectSlots.insert(std::make_pair(Object.ID, ObjectIdx)); } return false; }
static SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) { MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); MFI->setFrameAddressIsTaken(true); EVT VT = Op.getValueType(); DebugLoc dl = Op.getDebugLoc(); unsigned FrameReg = SP::I6; uint64_t depth = Op.getConstantOperandVal(0); SDValue FrameAddr; if (depth == 0) FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, VT); else { // flush first to make sure the windowed registers' values are in stack SDValue Chain = getFLUSHW(Op, DAG); FrameAddr = DAG.getCopyFromReg(Chain, dl, FrameReg, VT); for (uint64_t i = 0; i != depth; ++i) { SDValue Ptr = DAG.getNode(ISD::ADD, dl, MVT::i32, FrameAddr, DAG.getIntPtrConstant(56)); FrameAddr = DAG.getLoad(MVT::i32, dl, Chain, Ptr, MachinePointerInfo(), false, false, 0); } } return FrameAddr; }
SDValue AVM2TargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); MFI->setFrameAddressIsTaken(true); EVT VT = Op.getValueType(); DebugLoc dl = Op.getDebugLoc(); // FIXME probably not meaningful assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) && "only current frame addr supported"); SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, AVM2::EBP, VT); return FrameAddr; }
SDValue Cpu0TargetLowering:: LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { // check the depth assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) && "Frame address can only be determined for current frame."); MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); MFI->setFrameAddressIsTaken(true); EVT VT = Op.getValueType(); DebugLoc dl = Op.getDebugLoc(); SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, Cpu0::FP, VT); return FrameAddr; }
SDValue NvfcTargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); MFI->setFrameAddressIsTaken(true); EVT VT = Op.getValueType(); DebugLoc dl = Op.getDebugLoc(); // FIXME probably not meaningful unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue(); SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, Nvfc::FP, VT); while (Depth--) FrameAddr = DAG.getLoad(VT, dl, DAG.getEntryNode(), FrameAddr, NULL, 0, false, false, 0); return FrameAddr; }
SDValue LanaiTargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const { MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo(); MFI->setFrameAddressIsTaken(true); EVT VT = Op.getValueType(); SDLoc DL(Op); SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), DL, Lanai::FP, VT); unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue(); while (Depth--) { const unsigned Offset = -8; SDValue Ptr = DAG.getNode(ISD::ADD, DL, VT, FrameAddr, DAG.getIntPtrConstant(Offset, DL)); FrameAddr = DAG.getLoad(VT, DL, DAG.getEntryNode(), Ptr, MachinePointerInfo(), false, false, false, 0); } return FrameAddr; }