diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 6740bac..5601300 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -1812,10 +1812,44 @@ void SelectionDAGBuilder::visitResume(const ResumeInst &RI) { llvm_unreachable("SelectionDAGBuilder shouldn't visit resume instructions!"); } -void SelectionDAGBuilder::visitLandingPad(const LandingPadInst &) { +void SelectionDAGBuilder::visitLandingPad(const LandingPadInst &LP) { // FIXME: Handle this assert(FuncInfo.MBB->isLandingPad() && "Call to landingpad not in landing pad!"); + + MachineBasicBlock *MBB = FuncInfo.MBB; + MachineModuleInfo &MMI = DAG.getMachineFunction().getMMI(); + AddLandingPadInfo(LP, MMI, MBB); + + SmallVector<EVT, 2> ValueVTs; + ComputeValueVTs(TLI, LP.getType(),ValueVTs); + + // Insert the EXCEPTIONADDR instruction. + assert(FuncInfo.MBB->isLandingPad() && + "Call to eh.exception not in landing pad!"); + SDVTList VTs = DAG.getVTList(TLI.getPointerTy(), MVT::Other); + SDValue Ops[2]; + Ops[0] = DAG.getRoot(); + SDValue Op1 = DAG.getNode(ISD::EXCEPTIONADDR, getCurDebugLoc(), VTs, Ops, 1); + SDValue Chain = Op1.getValue(1); + + // Insert the EHSELECTION instruction. + VTs = DAG.getVTList(ValueVTs[1], MVT::Other); + Ops[0] = Op1; + Ops[1] = Chain; + SDValue Op2 = DAG.getNode(ISD::EHSELECTION, getCurDebugLoc(), VTs, Ops, 2); + Chain = Op2.getValue(1); + + Ops[0] = Op1; + Ops[1] = Op2; + + SDValue Res = DAG.getNode(ISD::MERGE_VALUES, getCurDebugLoc(), + DAG.getVTList(&ValueVTs[0], ValueVTs.size()), + &Ops[0], 2); + + std::pair<SDValue, SDValue> RetPair = std::make_pair(Res, Chain); + setValue(&LP, RetPair.first); + DAG.setRoot(RetPair.second); } /// handleSmallSwitchCaseRange - Emit a series of specific tests (suitable for |