//===----------------------------------------------------------------------===//
#include "LegalizeTypes.h"
-#include "llvm/CallingConv.h"
#include "llvm/ADT/SetVector.h"
+#include "llvm/CallingConv.h"
+#include "llvm/DataLayout.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
static cl::opt<bool>
// The final node obtained by mapping by ReplacedValues is not marked NewNode.
// Note that ReplacedValues should be applied iteratively.
- // Note that the ReplacedValues map may also map deleted nodes. By iterating
- // over the DAG we only consider non-deleted nodes.
+ // Note that the ReplacedValues map may also map deleted nodes (by iterating
+ // over the DAG we never dereference deleted nodes). This means that it may
+ // also map nodes marked NewNode if the deallocated memory was reallocated as
+ // another node, and that new node was not seen by the LegalizeTypes machinery
+ // (for example because it was created but not used). In general, we cannot
+ // distinguish between new nodes and deleted nodes.
SmallVector<SDNode*, 16> NewNodes;
for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(),
E = DAG.allnodes_end(); I != E; ++I) {
Mapped |= 128;
if (I->getNodeId() != Processed) {
- if (Mapped != 0) {
- cerr << "Unprocessed value in a map!";
+ // Since we allow ReplacedValues to map deleted nodes, it may map nodes
+ // marked NewNode too, since a deleted node may have been reallocated as
+ // another node that has not been seen by the LegalizeTypes machinery.
+ if ((I->getNodeId() == NewNode && Mapped > 1) ||
+ (I->getNodeId() != NewNode && Mapped != 0)) {
+ dbgs() << "Unprocessed value in a map!";
Failed = true;
}
} else if (isTypeLegal(Res.getValueType()) || IgnoreNodeResults(I)) {
- // FIXME: Because of PR2957, the build vector can be placed on this
- // list but if the associated vector shuffle is split, the build vector
- // can also be split so we allow this to go through for now.
- if (Mapped > 1 && Res.getOpcode() != ISD::BUILD_VECTOR) {
- cerr << "Value with legal type was transformed!";
+ if (Mapped > 1) {
+ dbgs() << "Value with legal type was transformed!";
Failed = true;
}
} else {
if (Mapped == 0) {
- cerr << "Processed value not in any map!";
+ dbgs() << "Processed value not in any map!";
Failed = true;
} else if (Mapped & (Mapped - 1)) {
- cerr << "Value in multiple maps!";
+ dbgs() << "Value in multiple maps!";
Failed = true;
}
}
if (Failed) {
if (Mapped & 1)
- cerr << " ReplacedValues";
+ dbgs() << " ReplacedValues";
if (Mapped & 2)
- cerr << " PromotedIntegers";
+ dbgs() << " PromotedIntegers";
if (Mapped & 4)
- cerr << " SoftenedFloats";
+ dbgs() << " SoftenedFloats";
if (Mapped & 8)
- cerr << " ScalarizedVectors";
+ dbgs() << " ScalarizedVectors";
if (Mapped & 16)
- cerr << " ExpandedIntegers";
+ dbgs() << " ExpandedIntegers";
if (Mapped & 32)
- cerr << " ExpandedFloats";
+ dbgs() << " ExpandedFloats";
if (Mapped & 64)
- cerr << " SplitVectors";
+ dbgs() << " SplitVectors";
if (Mapped & 128)
- cerr << " WidenedVectors";
- cerr << "\n";
- abort();
+ dbgs() << " WidenedVectors";
+ dbgs() << "\n";
+ llvm_unreachable(0);
}
}
}
// Scan the values produced by the node, checking to see if any result
// types are illegal.
for (unsigned i = 0, NumResults = N->getNumValues(); i < NumResults; ++i) {
- MVT ResultVT = N->getValueType(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;
if (IgnoreNodeResults(N->getOperand(i).getNode()))
continue;
- if (N->getOpcode() == ISD::VECTOR_SHUFFLE && i == 2) {
- // The shuffle mask doesn't need to be a legal vector type.
- // FIXME: We can remove this once we fix PR2957.
- SetIgnoredNodeResult(N->getOperand(2).getNode());
- continue;
- }
-
- MVT OpVT = N->getOperand(i).getValueType();
+ 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;
continue;
// The node morphed - this is equivalent to legalizing by replacing every
- // value of N with the corresponding value of M. So do that now. However
- // there is no need to remember the replacement - morphing will make sure
- // it is never used non-trivially.
+ // value of N with the corresponding value of M. So do that now.
assert(N->getNumValues() == M->getNumValues() &&
"Node morphing changed the number of results!");
for (unsigned i = 0, e = N->getNumValues(); i != e; ++i)
- // Replacing the value takes care of remapping the new value. Do the
- // replacement without recording it in ReplacedValues. This does not
- // expunge From but that is fine - it is not really a new node.
- ReplaceValueWithHelper(SDValue(N, i), SDValue(M, i));
+ // Replacing the value takes care of remapping the new value.
+ ReplaceValueWith(SDValue(N, i), SDValue(M, i));
assert(N->getNodeId() == NewNode && "Unexpected node state!");
// The node continues to live on as part of the NewNode fungus that
// grows on top of the useful nodes. Nothing more needs to be done
}
if (i == NumOperands) {
- DEBUG(cerr << "Legally typed node: "; N->dump(&DAG); cerr << "\n");
+ DEBUG(dbgs() << "Legally typed node: "; N->dump(&DAG); dbgs() << "\n");
}
}
NodeDone:
if (!IgnoreNodeResults(I))
for (unsigned i = 0, NumVals = I->getNumValues(); i < NumVals; ++i)
if (!isTypeLegal(I->getValueType(i))) {
- cerr << "Result type " << i << " illegal!\n";
+ dbgs() << "Result type " << i << " illegal!\n";
Failed = true;
}
for (unsigned i = 0, NumOps = I->getNumOperands(); i < NumOps; ++i)
if (!IgnoreNodeResults(I->getOperand(i).getNode()) &&
!isTypeLegal(I->getOperand(i).getValueType())) {
- cerr << "Operand type " << i << " illegal!\n";
+ dbgs() << "Operand type " << i << " illegal!\n";
Failed = true;
}
if (I->getNodeId() != Processed) {
if (I->getNodeId() == NewNode)
- cerr << "New node not analyzed?\n";
+ dbgs() << "New node not analyzed?\n";
else if (I->getNodeId() == Unanalyzed)
- cerr << "Unanalyzed node not noticed?\n";
+ dbgs() << "Unanalyzed node not noticed?\n";
else if (I->getNodeId() > 0)
- cerr << "Operand not processed?\n";
+ dbgs() << "Operand not processed?\n";
else if (I->getNodeId() == ReadyToProcess)
- cerr << "Not added to worklist?\n";
+ dbgs() << "Not added to worklist?\n";
Failed = true;
}
if (Failed) {
- I->dump(&DAG); cerr << "\n";
- abort();
+ I->dump(&DAG); dbgs() << "\n";
+ llvm_unreachable(0);
}
}
#endif
NewOps.push_back(Op);
} else if (Op != OrigOp) {
// This is the first operand to change - add all operands so far.
- for (unsigned j = 0; j < i; ++j)
- NewOps.push_back(N->getOperand(j));
+ 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
namespace {
/// NodeUpdateListener - This class is a DAGUpdateListener that listens for
/// updates to nodes and recomputes their ready state.
- class VISIBILITY_HIDDEN NodeUpdateListener :
- public SelectionDAG::DAGUpdateListener {
+ class NodeUpdateListener : public SelectionDAG::DAGUpdateListener {
DAGTypeLegalizer &DTL;
SmallSetVector<SDNode*, 16> &NodesToAnalyze;
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 &&
}
-/// ReplaceValueWithHelper - Internal helper for ReplaceValueWith. Updates the
-/// DAG causing any uses of From to use To instead, but without expunging From
-/// or recording the replacement in ReplacedValues. Do not call directly unless
-/// you really know what you are doing!
-void DAGTypeLegalizer::ReplaceValueWithHelper(SDValue From, SDValue To) {
+/// ReplaceValueWith - The specified value was legalized to the specified other
+/// value. Update the DAG and NodeIds replacing any uses of From to use To
+/// instead.
+void DAGTypeLegalizer::ReplaceValueWith(SDValue From, SDValue To) {
assert(From.getNode() != To.getNode() && "Potential legalization loop!");
// If expansion produced new nodes, make sure they are properly marked.
+ ExpungeNode(From.getNode());
AnalyzeNewValue(To); // Expunges To.
// Anything that used the old node should now use the new one. Note that this
// can potentially cause recursive merging.
SmallSetVector<SDNode*, 16> NodesToAnalyze;
NodeUpdateListener NUL(*this, NodesToAnalyze);
- DAG.ReplaceAllUsesOfValueWith(From, To, &NUL);
-
- // 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.
}
- }
-}
-
-/// ReplaceValueWith - The specified value was legalized to the specified other
-/// value. Update the DAG and NodeIds replacing any uses of From to use To
-/// instead.
-void DAGTypeLegalizer::ReplaceValueWith(SDValue From, SDValue To) {
- assert(From.getNode()->getNodeId() == ReadyToProcess &&
- "Only the node being processed may be remapped!");
-
- // If expansion produced new nodes, make sure they are properly marked.
- ExpungeNode(From.getNode());
- AnalyzeNewValue(To); // Expunges To.
-
- // The old node may still be present in a map like ExpandedIntegers or
- // PromotedIntegers. Inform maps about the replacement.
- ReplacedValues[From] = To;
-
- // Do the replacement.
- ReplaceValueWithHelper(From, To);
+ // 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()) &&
+ "Invalid type for promoted integer");
AnalyzeNewValue(Result);
SDValue &OpEntry = PromotedIntegers[Op];
}
void DAGTypeLegalizer::SetSoftenedFloat(SDValue Op, SDValue Result) {
+ assert(Result.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ "Invalid type for softened float");
AnalyzeNewValue(Result);
SDValue &OpEntry = SoftenedFloats[Op];
}
void DAGTypeLegalizer::SetScalarizedVector(SDValue Op, SDValue Result) {
+ // 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);
SDValue &OpEntry = ScalarizedVectors[Op];
void DAGTypeLegalizer::SetExpandedInteger(SDValue Op, SDValue Lo,
SDValue Hi) {
+ 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.
AnalyzeNewValue(Lo);
AnalyzeNewValue(Hi);
void DAGTypeLegalizer::SetExpandedFloat(SDValue Op, SDValue Lo,
SDValue Hi) {
+ 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.
AnalyzeNewValue(Lo);
AnalyzeNewValue(Hi);
void DAGTypeLegalizer::SetSplitVector(SDValue Op, SDValue Lo,
SDValue Hi) {
+ assert(Lo.getValueType().getVectorElementType() ==
+ Op.getValueType().getVectorElementType() &&
+ 2*Lo.getValueType().getVectorNumElements() ==
+ Op.getValueType().getVectorNumElements() &&
+ Hi.getValueType() == Lo.getValueType() &&
+ "Invalid type for split vector");
// Lo/Hi may have been newly allocated, if so, add nodeid's as relevant.
AnalyzeNewValue(Lo);
AnalyzeNewValue(Hi);
}
void DAGTypeLegalizer::SetWidenedVector(SDValue Op, SDValue Result) {
+ assert(Result.getValueType() ==
+ TLI.getTypeToTransformTo(*DAG.getContext(), Op.getValueType()) &&
+ "Invalid type for widened vector");
AnalyzeNewValue(Result);
SDValue &OpEntry = WidenedVectors[Op];
OpEntry = Result;
}
-// Set to ignore result
-void DAGTypeLegalizer::SetIgnoredNodeResult(SDNode* N) {
- IgnoredNodesResultsSet.insert(N);
-}
//===----------------------------------------------------------------------===//
// Utilities.
/// 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(),
- MVT::getIntegerVT(BitWidth), Op);
+ return DAG.getNode(ISD::BITCAST, Op.getDebugLoc(),
+ EVT::getIntegerVT(*DAG.getContext(), BitWidth), Op);
+}
+
+/// BitConvertVectorToIntegerVector - Convert to a vector of integers of the
+/// same size.
+SDValue DAGTypeLegalizer::BitConvertVectorToIntegerVector(SDValue Op) {
+ assert(Op.getValueType().isVector() && "Only applies to vectors!");
+ unsigned EltWidth = Op.getValueType().getVectorElementType().getSizeInBits();
+ EVT EltNVT = EVT::getIntegerVT(*DAG.getContext(), EltWidth);
+ unsigned NumElts = Op.getValueType().getVectorNumElements();
+ return DAG.getNode(ISD::BITCAST, Op.getDebugLoc(),
+ EVT::getVectorVT(*DAG.getContext(), EltNVT, NumElts), Op);
}
SDValue DAGTypeLegalizer::CreateStackStoreLoad(SDValue Op,
- MVT DestVT) {
+ EVT DestVT) {
DebugLoc dl = Op.getDebugLoc();
// Create the stack frame object. Make sure it is aligned for both
// 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);
}
-/// CustomLowerResults - Replace the node's results with custom code provided
+/// CustomLowerNode - Replace the node's results with custom code provided
/// by the target and return "true", or do nothing and return "false".
/// The last parameter is FALSE if we are dealing with a node with legal
-/// result types and illegal operand. The second parameter denotes the illegal
-/// OperandNo in that case.
+/// result types and illegal operand. The second parameter denotes the type of
+/// illegal OperandNo in that case.
/// The last parameter being TRUE means we are dealing with a
-/// node with illegal result types. The second parameter denotes the illegal
-/// ResNo in that case.
-bool DAGTypeLegalizer::CustomLowerResults(SDNode *N, MVT VT,
- bool LegalizeResult) {
+/// node with illegal result types. The second parameter denotes the type of
+/// illegal ResNo in that case.
+bool DAGTypeLegalizer::CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult) {
// See if the target wants to custom lower this node.
if (TLI.getOperationAction(N->getOpcode(), VT) != TargetLowering::Custom)
return false;
return true;
}
+
+/// CustomWidenLowerNode - Widen the node's results with custom code provided
+/// by the target and return "true", or do nothing and return "false".
+bool DAGTypeLegalizer::CustomWidenLowerNode(SDNode *N, EVT VT) {
+ // See if the target wants to custom lower this node.
+ if (TLI.getOperationAction(N->getOpcode(), VT) != TargetLowering::Custom)
+ return false;
+
+ SmallVector<SDValue, 8> Results;
+ TLI.ReplaceNodeResults(N, Results, DAG);
+
+ if (Results.empty())
+ // The target didn't want to custom widen lower its result after all.
+ return false;
+
+ // Update the widening map.
+ assert(Results.size() == N->getNumValues() &&
+ "Custom lowering returned the wrong number of results!");
+ for (unsigned i = 0, e = Results.size(); i != e; ++i)
+ SetWidenedVector(SDValue(N, i), Results[i]);
+ 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(MVT InVT, MVT &LoVT, MVT &HiVT) {
+void DAGTypeLegalizer::GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT) {
+ // Currently all types are split in half.
if (!InVT.isVector()) {
- LoVT = HiVT = TLI.getTypeToTransformTo(InVT);
+ LoVT = HiVT = TLI.getTypeToTransformTo(*DAG.getContext(), InVT);
} else {
- MVT NewEltVT = InVT.getVectorElementType();
unsigned NumElements = InVT.getVectorNumElements();
- if ((NumElements & (NumElements-1)) == 0) { // Simple power of two vector.
- NumElements >>= 1;
- LoVT = HiVT = MVT::getVectorVT(NewEltVT, NumElements);
- } else { // Non-power-of-two vectors.
- unsigned NewNumElts_Lo = 1 << Log2_32(NumElements);
- unsigned NewNumElts_Hi = NumElements - NewNumElts_Lo;
- LoVT = MVT::getVectorVT(NewEltVT, NewNumElts_Lo);
- HiVT = MVT::getVectorVT(NewEltVT, NewNumElts_Hi);
- }
+ assert(!(NumElements & 1) && "Splitting vector, but not in half!");
+ LoVT = HiVT = EVT::getVectorVT(*DAG.getContext(),
+ InVT.getVectorElementType(), NumElements/2);
}
}
-SDValue DAGTypeLegalizer::GetVectorElementPointer(SDValue VecPtr, MVT EltVT,
+/// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and
+/// high parts of the given value.
+void DAGTypeLegalizer::GetPairElements(SDValue Pair,
+ SDValue &Lo, SDValue &Hi) {
+ DebugLoc dl = Pair.getDebugLoc();
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), Pair.getValueType());
+ Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, NVT, Pair,
+ DAG.getIntPtrConstant(0));
+ Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, NVT, Pair,
+ DAG.getIntPtrConstant(1));
+}
+
+SDValue DAGTypeLegalizer::GetVectorElementPointer(SDValue VecPtr, EVT EltVT,
SDValue Index) {
DebugLoc dl = Index.getDebugLoc();
// Make sure the index type is big enough to compute in.
// Arbitrarily use dlHi for result DebugLoc
DebugLoc dlHi = Hi.getDebugLoc();
DebugLoc dlLo = Lo.getDebugLoc();
- MVT LVT = Lo.getValueType();
- MVT HVT = Hi.getValueType();
- MVT NVT = MVT::getIntegerVT(LVT.getSizeInBits() + HVT.getSizeInBits());
+ EVT LVT = Lo.getValueType();
+ EVT HVT = Hi.getValueType();
+ 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);
/// MakeLibCall - Generate a libcall taking the given operands as arguments and
/// returning a result of type RetVT.
-SDValue DAGTypeLegalizer::MakeLibCall(RTLIB::Libcall LC, MVT RetVT,
+SDValue DAGTypeLegalizer::MakeLibCall(RTLIB::Libcall LC, EVT RetVT,
const SDValue *Ops, unsigned NumOps,
bool isSigned, DebugLoc dl) {
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;
for (unsigned i = 0; i != NumOps; ++i) {
Entry.Node = Ops[i];
- Entry.Ty = Entry.Node.getValueType().getTypeForMVT();
+ Entry.Ty = Entry.Node.getValueType().getTypeForEVT(*DAG.getContext());
Entry.isSExt = isSigned;
Entry.isZExt = !isSigned;
Args.push_back(Entry);
SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC),
TLI.getPointerTy());
- const Type *RetTy = RetVT.getTypeForMVT();
- std::pair<SDValue,SDValue> CallInfo =
- TLI.LowerCallTo(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
- false, CallingConv::C, false, Callee, Args, DAG, dl);
+ 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, MVT VT) {
+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);
}
/// SplitInteger - Return the lower LoVT bits of Op in Lo and the upper HiVT
/// bits in Hi.
void DAGTypeLegalizer::SplitInteger(SDValue Op,
- MVT LoVT, MVT HiVT,
+ EVT LoVT, EVT HiVT,
SDValue &Lo, SDValue &Hi) {
DebugLoc dl = Op.getDebugLoc();
assert(LoVT.getSizeInBits() + HiVT.getSizeInBits() ==
/// type half the size of Op's.
void DAGTypeLegalizer::SplitInteger(SDValue Op,
SDValue &Lo, SDValue &Hi) {
- MVT HalfVT = MVT::getIntegerVT(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