6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-02 17:55:18 +00:00
Code Issues Projects Releases Wiki Activity

Add the body of 'visitLandingPad'.

Browse Source 
This generates the SDNodes for the new exception handling scheme. It takes the
two values coming from the landingpad instruction and assigns them to the
EXCEPTIONADDR and EHSELECTION nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137873 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-08-17 21:25:14 +00:00
parent ab82fd9ff6
commit 4eb2062143
1 changed files with 39 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
View File

@ -1814,6 +1814,45 @@ void SelectionDAGBuilder::visitResume(const ResumeInst &RI) {
llvm_unreachable("SelectionDAGBuilder shouldn't visit resume instructions!");
}
void SelectionDAGBuilder::visitLandingPad(const LandingPadInst &LP) {
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(TLI.getPointerTy(), MVT::Other);
Ops[0] = Op1;
Ops[1] = Chain;
SDValue Op2 = DAG.getNode(ISD::EHSELECTION, getCurDebugLoc(), VTs, Ops, 2);
Chain = Op2.getValue(1);
Op2 = DAG.getSExtOrTrunc(Op2, getCurDebugLoc(), MVT::i32);
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
/// small case ranges).
bool SelectionDAGBuilder::handleSmallSwitchRange(CaseRec& CR,
@ -2985,9 +3024,6 @@ void SelectionDAGBuilder::visitExtractValue(const ExtractValueInst &I) {
&Values[0], NumValValues));
}
void SelectionDAGBuilder::visitLandingPad(const LandingPadInst &I) {
}
void SelectionDAGBuilder::visitGetElementPtr(const User &I) {
SDValue N = getValue(I.getOperand(0));
Type *Ty = I.getOperand(0)->getType();