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path: root/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
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-rw-r--r--lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp90
1 files changed, 56 insertions, 34 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
index 96f6143..c749fde 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
@@ -77,13 +77,9 @@ void DAGTypeLegalizer::ExpandRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi) {
case TargetLowering::TypeWidenVector: {
assert(!(InVT.getVectorNumElements() & 1) && "Unsupported BITCAST");
InOp = GetWidenedVector(InOp);
- EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(),
- InVT.getVectorNumElements()/2);
- Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
- DAG.getConstant(0, TLI.getVectorIdxTy()));
- Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
- DAG.getConstant(InNVT.getVectorNumElements(),
- TLI.getVectorIdxTy()));
+ EVT LoVT, HiVT;
+ llvm::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(InVT);
+ llvm::tie(Lo, Hi) = DAG.SplitVector(InOp, dl, LoVT, HiVT);
if (TLI.isBigEndian())
std::swap(Lo, Hi);
Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo);
@@ -169,7 +165,8 @@ void DAGTypeLegalizer::ExpandRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi) {
// Increment the pointer to the other half.
unsigned IncrementSize = NOutVT.getSizeInBits() / 8;
StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
- DAG.getIntPtrConstant(IncrementSize));
+ DAG.getConstant(IncrementSize,
+ StackPtr.getValueType()));
// Load the second half from the stack slot.
Hi = DAG.getLoad(NOutVT, dl, Store, StackPtr,
@@ -253,20 +250,22 @@ void DAGTypeLegalizer::ExpandRes_NormalLoad(SDNode *N, SDValue &Lo,
bool isVolatile = LD->isVolatile();
bool isNonTemporal = LD->isNonTemporal();
bool isInvariant = LD->isInvariant();
+ const MDNode *TBAAInfo = LD->getTBAAInfo();
assert(NVT.isByteSized() && "Expanded type not byte sized!");
Lo = DAG.getLoad(NVT, dl, Chain, Ptr, LD->getPointerInfo(),
- isVolatile, isNonTemporal, isInvariant, Alignment);
+ isVolatile, isNonTemporal, isInvariant, Alignment,
+ TBAAInfo);
// Increment the pointer to the other half.
unsigned IncrementSize = NVT.getSizeInBits() / 8;
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
- DAG.getIntPtrConstant(IncrementSize));
+ DAG.getConstant(IncrementSize, Ptr.getValueType()));
Hi = DAG.getLoad(NVT, dl, Chain, Ptr,
LD->getPointerInfo().getWithOffset(IncrementSize),
isVolatile, isNonTemporal, isInvariant,
- MinAlign(Alignment, IncrementSize));
+ MinAlign(Alignment, IncrementSize), TBAAInfo);
// Build a factor node to remember that this load is independent of the
// other one.
@@ -307,6 +306,25 @@ void DAGTypeLegalizer::ExpandRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi) {
// Generic Operand Expansion.
//===--------------------------------------------------------------------===//
+void DAGTypeLegalizer::IntegerToVector(SDValue Op, unsigned NumElements,
+ SmallVectorImpl<SDValue> &Ops,
+ EVT EltVT) {
+ assert(Op.getValueType().isInteger());
+ SDLoc DL(Op);
+ SDValue Parts[2];
+
+ if (NumElements > 1) {
+ NumElements >>= 1;
+ SplitInteger(Op, Parts[0], Parts[1]);
+ if (TLI.isBigEndian())
+ std::swap(Parts[0], Parts[1]);
+ IntegerToVector(Parts[0], NumElements, Ops, EltVT);
+ IntegerToVector(Parts[1], NumElements, Ops, EltVT);
+ } else {
+ Ops.push_back(DAG.getNode(ISD::BITCAST, DL, EltVT, Op));
+ }
+}
+
SDValue DAGTypeLegalizer::ExpandOp_BITCAST(SDNode *N) {
SDLoc dl(N);
if (N->getValueType(0).isVector()) {
@@ -315,21 +333,27 @@ SDValue DAGTypeLegalizer::ExpandOp_BITCAST(SDNode *N) {
// instead, but only if the new vector type is legal (otherwise there
// is no point, and it might create expansion loops). For example, on
// x86 this turns v1i64 = BITCAST i64 into v1i64 = BITCAST v2i32.
+ //
+ // FIXME: I'm not sure why we are first trying to split the input into
+ // a 2 element vector, so I'm leaving it here to maintain the current
+ // behavior.
+ unsigned NumElts = 2;
EVT OVT = N->getOperand(0).getValueType();
EVT NVT = EVT::getVectorVT(*DAG.getContext(),
TLI.getTypeToTransformTo(*DAG.getContext(), OVT),
- 2);
-
- if (isTypeLegal(NVT)) {
- SDValue Parts[2];
- GetExpandedOp(N->getOperand(0), Parts[0], Parts[1]);
+ NumElts);
+ if (!isTypeLegal(NVT)) {
+ // If we can't find a legal type by splitting the integer in half,
+ // then we can use the node's value type.
+ NumElts = N->getValueType(0).getVectorNumElements();
+ NVT = N->getValueType(0);
+ }
- if (TLI.isBigEndian())
- std::swap(Parts[0], Parts[1]);
+ SmallVector<SDValue, 8> Ops;
+ IntegerToVector(N->getOperand(0), NumElts, Ops, NVT.getVectorElementType());
- SDValue Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, NVT, Parts, 2);
- return DAG.getNode(ISD::BITCAST, dl, N->getValueType(0), Vec);
- }
+ SDValue Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, NVT, &Ops[0], NumElts);
+ return DAG.getNode(ISD::BITCAST, dl, N->getValueType(0), Vec);
}
// Otherwise, store to a temporary and load out again as the new type.
@@ -439,6 +463,7 @@ SDValue DAGTypeLegalizer::ExpandOp_NormalStore(SDNode *N, unsigned OpNo) {
unsigned Alignment = St->getAlignment();
bool isVolatile = St->isVolatile();
bool isNonTemporal = St->isNonTemporal();
+ const MDNode *TBAAInfo = St->getTBAAInfo();
assert(NVT.isByteSized() && "Expanded type not byte sized!");
unsigned IncrementSize = NVT.getSizeInBits() / 8;
@@ -450,15 +475,14 @@ SDValue DAGTypeLegalizer::ExpandOp_NormalStore(SDNode *N, unsigned OpNo) {
std::swap(Lo, Hi);
Lo = DAG.getStore(Chain, dl, Lo, Ptr, St->getPointerInfo(),
- isVolatile, isNonTemporal, Alignment);
+ isVolatile, isNonTemporal, Alignment, TBAAInfo);
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
- DAG.getIntPtrConstant(IncrementSize));
- assert(isTypeLegal(Ptr.getValueType()) && "Pointers must be legal!");
+ DAG.getConstant(IncrementSize, Ptr.getValueType()));
Hi = DAG.getStore(Chain, dl, Hi, Ptr,
St->getPointerInfo().getWithOffset(IncrementSize),
isVolatile, isNonTemporal,
- MinAlign(Alignment, IncrementSize));
+ MinAlign(Alignment, IncrementSize), TBAAInfo);
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi);
}
@@ -489,14 +513,12 @@ void DAGTypeLegalizer::SplitRes_SELECT(SDNode *N, SDValue &Lo,
SDValue Cond = N->getOperand(0);
CL = CH = Cond;
if (Cond.getValueType().isVector()) {
- assert(Cond.getValueType().getVectorElementType() == MVT::i1 &&
- "Condition legalized before result?");
- unsigned NumElements = Cond.getValueType().getVectorNumElements();
- EVT VCondTy = EVT::getVectorVT(*DAG.getContext(), MVT::i1, NumElements / 2);
- CL = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VCondTy, Cond,
- DAG.getConstant(0, TLI.getVectorIdxTy()));
- CH = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VCondTy, Cond,
- DAG.getConstant(NumElements / 2, TLI.getVectorIdxTy()));
+ // Check if there are already splitted versions of the vector available and
+ // use those instead of splitting the mask operand again.
+ if (getTypeAction(Cond.getValueType()) == TargetLowering::TypeSplitVector)
+ GetSplitVector(Cond, CL, CH);
+ else
+ llvm::tie(CL, CH) = DAG.SplitVector(Cond, dl);
}
Lo = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), CL, LL, RL);
@@ -518,7 +540,7 @@ void DAGTypeLegalizer::SplitRes_SELECT_CC(SDNode *N, SDValue &Lo,
void DAGTypeLegalizer::SplitRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi) {
EVT LoVT, HiVT;
- GetSplitDestVTs(N->getValueType(0), LoVT, HiVT);
+ llvm::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(N->getValueType(0));
Lo = DAG.getUNDEF(LoVT);
Hi = DAG.getUNDEF(HiVT);
}
generated by cgit v1.1 at 2024-06-08 06:26:14 +0000