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Add a RegisterMaskSDNode class.

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This SelectionDAG node will be attached to call nodes by LowerCall(),
and eventually becomes a MO_RegisterMask MachineOperand on the
MachineInstr representing the call instruction.

LowerCall() will attach a register mask that depends on the calling
convention.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148436 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-01-18 23:52:12 +00:00
parent 8887a0f341
commit 9cf37e8b48
7 changed files with 41 additions and 3 deletions
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lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+18 -2
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@@ -383,7 +383,9 @@ static void AddNodeIDCustom(FoldingSetNodeID &ID, const SDNode *N) {
case ISD::Register:
ID.AddInteger(cast<RegisterSDNode>(N)->getReg());
break;
case ISD::RegisterMask:
ID.AddPointer(cast<RegisterMaskSDNode>(N)->getRegMask());
break;
case ISD::SRCVALUE:
ID.AddPointer(cast<SrcValueSDNode>(N)->getValue());
break;
@@ -1375,6 +1377,20 @@ SDValue SelectionDAG::getRegister(unsigned RegNo, EVT VT) {
return SDValue(N, 0);
}
SDValue SelectionDAG::getRegisterMask(const uint32_t *RegMask) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::RegisterMask, getVTList(MVT::Untyped), 0, 0);
ID.AddPointer(RegMask);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) RegisterMaskSDNode(RegMask);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getEHLabel(DebugLoc dl, SDValue Root, MCSymbol *Label) {
FoldingSetNodeID ID;
SDValue Ops[] = { Root };
@@ -5946,7 +5962,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
case ISD::BasicBlock: return "BasicBlock";
case ISD::VALUETYPE: return "ValueType";
case ISD::Register: return "Register";
case ISD::RegisterMask: return "RegisterMask";
case ISD::Constant: return "Constant";
case ISD::ConstantFP: return "ConstantFP";
case ISD::GlobalAddress: return "GlobalAddress";