for (unsigned i = 0, NumResults = N->getNumValues(); i < NumResults; ++i) {
EVT ResultVT = N->getValueType(i);
switch (getTypeAction(ResultVT)) {
- default:
- assert(false && "Unknown action!");
- case Legal:
+ case TargetLowering::TypeLegal:
break;
// The following calls must take care of *all* of the node's results,
// not just the illegal result they were passed (this includes results
// with a legal type). Results can be remapped using ReplaceValueWith,
// or their promoted/expanded/etc values registered in PromotedIntegers,
// ExpandedIntegers etc.
- case PromoteInteger:
+ case TargetLowering::TypePromoteInteger:
PromoteIntegerResult(N, i);
Changed = true;
goto NodeDone;
- case ExpandInteger:
+ case TargetLowering::TypeExpandInteger:
ExpandIntegerResult(N, i);
Changed = true;
goto NodeDone;
- case SoftenFloat:
+ case TargetLowering::TypeSoftenFloat:
SoftenFloatResult(N, i);
Changed = true;
goto NodeDone;
- case ExpandFloat:
+ case TargetLowering::TypeExpandFloat:
ExpandFloatResult(N, i);
Changed = true;
goto NodeDone;
- case ScalarizeVector:
+ case TargetLowering::TypeScalarizeVector:
ScalarizeVectorResult(N, i);
Changed = true;
goto NodeDone;
- case SplitVector:
+ case TargetLowering::TypeSplitVector:
SplitVectorResult(N, i);
Changed = true;
goto NodeDone;
- case WidenVector:
+ case TargetLowering::TypeWidenVector:
WidenVectorResult(N, i);
Changed = true;
goto NodeDone;
EVT OpVT = N->getOperand(i).getValueType();
switch (getTypeAction(OpVT)) {
- default:
- assert(false && "Unknown action!");
- case Legal:
+ case TargetLowering::TypeLegal:
continue;
// The following calls must either replace all of the node's results
// using ReplaceValueWith, and return "false"; or update the node's
// operands in place, and return "true".
- case PromoteInteger:
+ case TargetLowering::TypePromoteInteger:
NeedsReanalyzing = PromoteIntegerOperand(N, i);
Changed = true;
break;
- case ExpandInteger:
+ case TargetLowering::TypeExpandInteger:
NeedsReanalyzing = ExpandIntegerOperand(N, i);
Changed = true;
break;
- case SoftenFloat:
+ case TargetLowering::TypeSoftenFloat:
NeedsReanalyzing = SoftenFloatOperand(N, i);
Changed = true;
break;
- case ExpandFloat:
+ case TargetLowering::TypeExpandFloat:
NeedsReanalyzing = ExpandFloatOperand(N, i);
Changed = true;
break;
- case ScalarizeVector:
+ case TargetLowering::TypeScalarizeVector:
NeedsReanalyzing = ScalarizeVectorOperand(N, i);
Changed = true;
break;
- case SplitVector:
+ case TargetLowering::TypeSplitVector:
NeedsReanalyzing = SplitVectorOperand(N, i);
Changed = true;
break;
- case WidenVector:
+ case TargetLowering::TypeWidenVector:
NeedsReanalyzing = WidenVectorOperand(N, i);
Changed = true;
break;
NewOps.push_back(Op);
} else if (Op != OrigOp) {
// This is the first operand to change - add all operands so far.
- NewOps.insert(NewOps.end(), N->op_begin(), N->op_begin() + i);
+ NewOps.append(N->op_begin(), N->op_begin() + i);
NewOps.push_back(Op);
}
}
// Some operands changed - update the node.
if (!NewOps.empty()) {
- SDNode *M = DAG.UpdateNodeOperands(SDValue(N, 0), &NewOps[0],
- NewOps.size()).getNode();
+ SDNode *M = DAG.UpdateNodeOperands(N, &NewOps[0], NewOps.size());
if (M != N) {
// The node morphed into a different node. Normally for this to happen
// the original node would have to be marked NewNode. However this can
public:
explicit NodeUpdateListener(DAGTypeLegalizer &dtl,
SmallSetVector<SDNode*, 16> &nta)
- : DTL(dtl), NodesToAnalyze(nta) {}
+ : SelectionDAG::DAGUpdateListener(dtl.getDAG()),
+ DTL(dtl), NodesToAnalyze(nta) {}
virtual void NodeDeleted(SDNode *N, SDNode *E) {
assert(N->getNodeId() != DAGTypeLegalizer::ReadyToProcess &&
// can potentially cause recursive merging.
SmallSetVector<SDNode*, 16> NodesToAnalyze;
NodeUpdateListener NUL(*this, NodesToAnalyze);
- DAG.ReplaceAllUsesOfValueWith(From, To, &NUL);
-
- // The old node may still be present in a map like ExpandedIntegers or
- // PromotedIntegers. Inform maps about the replacement.
- ReplacedValues[From] = To;
-
- // Process the list of nodes that need to be reanalyzed.
- while (!NodesToAnalyze.empty()) {
- SDNode *N = NodesToAnalyze.back();
- NodesToAnalyze.pop_back();
- if (N->getNodeId() != DAGTypeLegalizer::NewNode)
- // The node was analyzed while reanalyzing an earlier node - it is safe to
- // skip. Note that this is not a morphing node - otherwise it would still
- // be marked NewNode.
- continue;
+ do {
+ DAG.ReplaceAllUsesOfValueWith(From, To);
+
+ // The old node may still be present in a map like ExpandedIntegers or
+ // PromotedIntegers. Inform maps about the replacement.
+ ReplacedValues[From] = To;
+
+ // Process the list of nodes that need to be reanalyzed.
+ while (!NodesToAnalyze.empty()) {
+ SDNode *N = NodesToAnalyze.back();
+ NodesToAnalyze.pop_back();
+ if (N->getNodeId() != DAGTypeLegalizer::NewNode)
+ // The node was analyzed while reanalyzing an earlier node - it is safe
+ // to skip. Note that this is not a morphing node - otherwise it would
+ // still be marked NewNode.
+ continue;
- // Analyze the node's operands and recalculate the node ID.
- SDNode *M = AnalyzeNewNode(N);
- if (M != N) {
- // The node morphed into a different node. Make everyone use the new node
- // instead.
- assert(M->getNodeId() != NewNode && "Analysis resulted in NewNode!");
- assert(N->getNumValues() == M->getNumValues() &&
- "Node morphing changed the number of results!");
- for (unsigned i = 0, e = N->getNumValues(); i != e; ++i) {
- SDValue OldVal(N, i);
- SDValue NewVal(M, i);
- if (M->getNodeId() == Processed)
- RemapValue(NewVal);
- DAG.ReplaceAllUsesOfValueWith(OldVal, NewVal, &NUL);
+ // Analyze the node's operands and recalculate the node ID.
+ SDNode *M = AnalyzeNewNode(N);
+ if (M != N) {
+ // The node morphed into a different node. Make everyone use the new
+ // node instead.
+ assert(M->getNodeId() != NewNode && "Analysis resulted in NewNode!");
+ assert(N->getNumValues() == M->getNumValues() &&
+ "Node morphing changed the number of results!");
+ for (unsigned i = 0, e = N->getNumValues(); i != e; ++i) {
+ SDValue OldVal(N, i);
+ SDValue NewVal(M, i);
+ if (M->getNodeId() == Processed)
+ RemapValue(NewVal);
+ DAG.ReplaceAllUsesOfValueWith(OldVal, NewVal);
+ // OldVal may be a target of the ReplacedValues map which was marked
+ // NewNode to force reanalysis because it was updated. Ensure that
+ // anything that ReplacedValues mapped to OldVal will now be mapped
+ // all the way to NewVal.
+ ReplacedValues[OldVal] = NewVal;
+ }
+ // The original node continues to exist in the DAG, marked NewNode.
}
- // The original node continues to exist in the DAG, marked NewNode.
}
- }
+ // When recursively update nodes with new nodes, it is possible to have
+ // new uses of From due to CSE. If this happens, replace the new uses of
+ // From with To.
+ } while (!From.use_empty());
}
void DAGTypeLegalizer::SetPromotedInteger(SDValue Op, SDValue Result) {
- assert(Result.getValueType() == TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ assert(Result.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
"Invalid type for promoted integer");
AnalyzeNewValue(Result);
}
void DAGTypeLegalizer::SetSoftenedFloat(SDValue Op, SDValue Result) {
- assert(Result.getValueType() == TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ assert(Result.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
"Invalid type for softened float");
AnalyzeNewValue(Result);
}
void DAGTypeLegalizer::SetScalarizedVector(SDValue Op, SDValue Result) {
- assert(Result.getValueType() == Op.getValueType().getVectorElementType() &&
+ // Note that in some cases vector operation operands may be greater than
+ // the vector element type. For example BUILD_VECTOR of type <1 x i1> with
+ // a constant i8 operand.
+ assert(Result.getValueType().getSizeInBits() >=
+ Op.getValueType().getVectorElementType().getSizeInBits() &&
"Invalid type for scalarized vector");
AnalyzeNewValue(Result);
void DAGTypeLegalizer::SetExpandedInteger(SDValue Op, SDValue Lo,
SDValue Hi) {
- assert(Lo.getValueType() == TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ assert(Lo.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
Hi.getValueType() == Lo.getValueType() &&
"Invalid type for expanded integer");
// Lo/Hi may have been newly allocated, if so, add nodeid's as relevant.
void DAGTypeLegalizer::SetExpandedFloat(SDValue Op, SDValue Lo,
SDValue Hi) {
- assert(Lo.getValueType() == TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ assert(Lo.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
Hi.getValueType() == Lo.getValueType() &&
"Invalid type for expanded float");
// Lo/Hi may have been newly allocated, if so, add nodeid's as relevant.
}
void DAGTypeLegalizer::SetWidenedVector(SDValue Op, SDValue Result) {
- assert(Result.getValueType() == TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ assert(Result.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
"Invalid type for widened vector");
AnalyzeNewValue(Result);
/// BitConvertToInteger - Convert to an integer of the same size.
SDValue DAGTypeLegalizer::BitConvertToInteger(SDValue Op) {
unsigned BitWidth = Op.getValueType().getSizeInBits();
- return DAG.getNode(ISD::BIT_CONVERT, Op.getDebugLoc(),
+ return DAG.getNode(ISD::BITCAST, Op.getDebugLoc(),
EVT::getIntegerVT(*DAG.getContext(), BitWidth), Op);
}
unsigned EltWidth = Op.getValueType().getVectorElementType().getSizeInBits();
EVT EltNVT = EVT::getIntegerVT(*DAG.getContext(), EltWidth);
unsigned NumElts = Op.getValueType().getVectorNumElements();
- return DAG.getNode(ISD::BIT_CONVERT, Op.getDebugLoc(),
+ return DAG.getNode(ISD::BITCAST, Op.getDebugLoc(),
EVT::getVectorVT(*DAG.getContext(), EltNVT, NumElts), Op);
}
// the source and destination types.
SDValue StackPtr = DAG.CreateStackTemporary(Op.getValueType(), DestVT);
// Emit a store to the stack slot.
- SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, Op, StackPtr, NULL, 0);
+ SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, Op, StackPtr,
+ MachinePointerInfo(), false, false, 0);
// Result is a load from the stack slot.
- return DAG.getLoad(DestVT, dl, Store, StackPtr, NULL, 0);
+ return DAG.getLoad(DestVT, dl, Store, StackPtr, MachinePointerInfo(),
+ false, false, false, 0);
}
/// CustomLowerNode - Replace the node's results with custom code provided
return true;
}
+SDValue DAGTypeLegalizer::DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo) {
+ for (unsigned i = 0, e = N->getNumValues(); i != e; ++i)
+ if (i != ResNo)
+ ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i)));
+ return SDValue(N->getOperand(ResNo));
+}
+
/// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type
/// which is split into two not necessarily identical pieces.
void DAGTypeLegalizer::GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT) {
} else {
unsigned NumElements = InVT.getVectorNumElements();
assert(!(NumElements & 1) && "Splitting vector, but not in half!");
- LoVT = HiVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(), NumElements/2);
+ LoVT = HiVT = EVT::getVectorVT(*DAG.getContext(),
+ InVT.getVectorElementType(), NumElements/2);
}
}
DebugLoc dlLo = Lo.getDebugLoc();
EVT LVT = Lo.getValueType();
EVT HVT = Hi.getValueType();
- EVT NVT = EVT::getIntegerVT(*DAG.getContext(), LVT.getSizeInBits() + HVT.getSizeInBits());
+ EVT NVT = EVT::getIntegerVT(*DAG.getContext(),
+ LVT.getSizeInBits() + HVT.getSizeInBits());
Lo = DAG.getNode(ISD::ZERO_EXTEND, dlLo, NVT, Lo);
Hi = DAG.getNode(ISD::ANY_EXTEND, dlHi, NVT, Hi);
SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC),
TLI.getPointerTy());
- const Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
- std::pair<SDValue,SDValue> CallInfo =
- TLI.LowerCallTo(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
- false, 0, TLI.getLibcallCallingConv(LC), false,
- /*isReturnValueUsed=*/true,
- Callee, Args, DAG, dl,
- DAG.GetOrdering(DAG.getEntryNode().getNode()));
+ Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
+ TargetLowering::
+ CallLoweringInfo CLI(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
+ false, 0, TLI.getLibcallCallingConv(LC),
+ /*isTailCall=*/false,
+ /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
+ Callee, Args, DAG, dl);
+ std::pair<SDValue,SDValue> CallInfo = TLI.LowerCallTo(CLI);
+
return CallInfo.first;
}
+// ExpandChainLibCall - Expand a node into a call to a libcall. Similar to
+// ExpandLibCall except that the first operand is the in-chain.
+std::pair<SDValue, SDValue>
+DAGTypeLegalizer::ExpandChainLibCall(RTLIB::Libcall LC,
+ SDNode *Node,
+ bool isSigned) {
+ SDValue InChain = Node->getOperand(0);
+
+ TargetLowering::ArgListTy Args;
+ TargetLowering::ArgListEntry Entry;
+ for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) {
+ EVT ArgVT = Node->getOperand(i).getValueType();
+ Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext());
+ Entry.Node = Node->getOperand(i);
+ Entry.Ty = ArgTy;
+ Entry.isSExt = isSigned;
+ Entry.isZExt = !isSigned;
+ Args.push_back(Entry);
+ }
+ SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC),
+ TLI.getPointerTy());
+
+ Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext());
+ TargetLowering::
+ CallLoweringInfo CLI(InChain, RetTy, isSigned, !isSigned, false, false,
+ 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false,
+ /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
+ Callee, Args, DAG, Node->getDebugLoc());
+ std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
+
+ return CallInfo;
+}
+
/// PromoteTargetBoolean - Promote the given target boolean to a target boolean
/// of the given type. A target boolean is an integer value, not necessarily of
/// type i1, the bits of which conform to getBooleanContents.
SDValue DAGTypeLegalizer::PromoteTargetBoolean(SDValue Bool, EVT VT) {
DebugLoc dl = Bool.getDebugLoc();
- ISD::NodeType ExtendCode;
- switch (TLI.getBooleanContents()) {
- default:
- assert(false && "Unknown BooleanContent!");
- case TargetLowering::UndefinedBooleanContent:
- // Extend to VT by adding rubbish bits.
- ExtendCode = ISD::ANY_EXTEND;
- break;
- case TargetLowering::ZeroOrOneBooleanContent:
- // Extend to VT by adding zero bits.
- ExtendCode = ISD::ZERO_EXTEND;
- break;
- case TargetLowering::ZeroOrNegativeOneBooleanContent: {
- // Extend to VT by copying the sign bit.
- ExtendCode = ISD::SIGN_EXTEND;
- break;
- }
- }
+ ISD::NodeType ExtendCode =
+ TargetLowering::getExtendForContent(TLI.getBooleanContents(VT.isVector()));
return DAG.getNode(ExtendCode, dl, VT, Bool);
}
/// type half the size of Op's.
void DAGTypeLegalizer::SplitInteger(SDValue Op,
SDValue &Lo, SDValue &Hi) {
- EVT HalfVT = EVT::getIntegerVT(*DAG.getContext(), Op.getValueType().getSizeInBits()/2);
+ EVT HalfVT = EVT::getIntegerVT(*DAG.getContext(),
+ Op.getValueType().getSizeInBits()/2);
SplitInteger(Op, HalfVT, HalfVT, Lo, Hi);
}
projects / oota-llvm.git / blobdiff