//===----------------------------------------------------------------------===//
#include "LegalizeTypes.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/IR/DataLayout.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// These routines assume that the Lo/Hi part is stored first in memory on
// little/big-endian machines, followed by the Hi/Lo part. This means that
// they cannot be used as is on vectors, for which Lo is always stored first.
+void DAGTypeLegalizer::ExpandRes_MERGE_VALUES(SDNode *N, unsigned ResNo,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
+ GetExpandedOp(Op, Lo, Hi);
+}
void DAGTypeLegalizer::ExpandRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi) {
EVT OutVT = N->getValueType(0);
// Handle some special cases efficiently.
switch (getTypeAction(InVT)) {
- default:
- assert(false && "Unknown type action!");
case TargetLowering::TypeLegal:
case TargetLowering::TypePromoteInteger:
break;
if (InVT.isVector() && OutVT.isInteger()) {
// Handle cases like i64 = BITCAST v1i64 on x86, where the operand
// is legal but the result is not.
- EVT NVT = EVT::getVectorVT(*DAG.getContext(), NOutVT, 2);
+ unsigned NumElems = 2;
+ EVT ElemVT = NOutVT;
+ EVT NVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, NumElems);
+
+ // If <ElemVT * N> is not a legal type, try <ElemVT/2 * (N*2)>.
+ while (!isTypeLegal(NVT)) {
+ unsigned NewSizeInBits = ElemVT.getSizeInBits() / 2;
+ // If the element size is smaller than byte, bail.
+ if (NewSizeInBits < 8)
+ break;
+ NumElems *= 2;
+ ElemVT = EVT::getIntegerVT(*DAG.getContext(), NewSizeInBits);
+ NVT = EVT::getVectorVT(*DAG.getContext(), ElemVT, NumElems);
+ }
if (isTypeLegal(NVT)) {
SDValue CastInOp = DAG.getNode(ISD::BITCAST, dl, NVT, InOp);
- Lo = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NOutVT, CastInOp,
- DAG.getIntPtrConstant(0));
- Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NOutVT, CastInOp,
- DAG.getIntPtrConstant(1));
+
+ SmallVector<SDValue, 8> Vals;
+ for (unsigned i = 0; i < NumElems; ++i)
+ Vals.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, ElemVT,
+ CastInOp, DAG.getIntPtrConstant(i)));
+
+ // Build Lo, Hi pair by pairing extracted elements if needed.
+ unsigned Slot = 0;
+ for (unsigned e = Vals.size(); e - Slot > 2; Slot += 2, e += 1) {
+ // Each iteration will BUILD_PAIR two nodes and append the result until
+ // there are only two nodes left, i.e. Lo and Hi.
+ SDValue LHS = Vals[Slot];
+ SDValue RHS = Vals[Slot + 1];
+
+ if (TLI.isBigEndian())
+ std::swap(LHS, RHS);
+
+ Vals.push_back(DAG.getNode(ISD::BUILD_PAIR, dl,
+ EVT::getIntegerVT(
+ *DAG.getContext(),
+ LHS.getValueType().getSizeInBits() << 1),
+ LHS, RHS));
+ }
+ Lo = Vals[Slot++];
+ Hi = Vals[Slot++];
if (TLI.isBigEndian())
std::swap(Lo, Hi);
// Create the stack frame object. Make sure it is aligned for both
// the source and expanded destination types.
unsigned Alignment =
- TLI.getTargetData()->getPrefTypeAlignment(NOutVT.
+ TLI.getDataLayout()->getPrefTypeAlignment(NOutVT.
getTypeForEVT(*DAG.getContext()));
SDValue StackPtr = DAG.CreateStackTemporary(InVT, Alignment);
int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex();
false, false, 0);
// Load the first half from the stack slot.
- Lo = DAG.getLoad(NOutVT, dl, Store, StackPtr, PtrInfo, false, false, 0);
+ Lo = DAG.getLoad(NOutVT, dl, Store, StackPtr, PtrInfo,
+ false, false, false, 0);
// Increment the pointer to the other half.
unsigned IncrementSize = NOutVT.getSizeInBits() / 8;
// Load the second half from the stack slot.
Hi = DAG.getLoad(NOutVT, dl, Store, StackPtr,
PtrInfo.getWithOffset(IncrementSize), false,
- false, MinAlign(Alignment, IncrementSize));
+ false, false, MinAlign(Alignment, IncrementSize));
// Handle endianness of the load.
if (TLI.isBigEndian())
SDValue &Hi) {
SDValue OldVec = N->getOperand(0);
unsigned OldElts = OldVec.getValueType().getVectorNumElements();
+ EVT OldEltVT = OldVec.getValueType().getVectorElementType();
DebugLoc dl = N->getDebugLoc();
// Convert to a vector of the expanded element type, for example
EVT OldVT = N->getValueType(0);
EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT);
+ if (OldVT != OldEltVT) {
+ // The result of EXTRACT_VECTOR_ELT may be larger than the element type of
+ // the input vector. If so, extend the elements of the input vector to the
+ // same bitwidth as the result before expanding.
+ assert(OldEltVT.bitsLT(OldVT) && "Result type smaller then element type!");
+ EVT NVecVT = EVT::getVectorVT(*DAG.getContext(), OldVT, OldElts);
+ OldVec = DAG.getNode(ISD::ANY_EXTEND, dl, NVecVT, N->getOperand(0));
+ }
+
SDValue NewVec = DAG.getNode(ISD::BITCAST, dl,
EVT::getVectorVT(*DAG.getContext(),
NewVT, 2*OldElts),
unsigned Alignment = LD->getAlignment();
bool isVolatile = LD->isVolatile();
bool isNonTemporal = LD->isNonTemporal();
+ bool isInvariant = LD->isInvariant();
assert(NVT.isByteSized() && "Expanded type not byte sized!");
Lo = DAG.getLoad(NVT, dl, Chain, Ptr, LD->getPointerInfo(),
- isVolatile, isNonTemporal, Alignment);
+ isVolatile, isNonTemporal, isInvariant, Alignment);
// Increment the pointer to the other half.
unsigned IncrementSize = NVT.getSizeInBits() / 8;
DAG.getIntPtrConstant(IncrementSize));
Hi = DAG.getLoad(NVT, dl, Chain, Ptr,
LD->getPointerInfo().getWithOffset(IncrementSize),
- isVolatile, isNonTemporal,
+ isVolatile, isNonTemporal, isInvariant,
MinAlign(Alignment, IncrementSize));
// Build a factor node to remember that this load is independent of the
// bytes; for integers and floats it is Lo first if and only if the machine is
// little-endian).
-void DAGTypeLegalizer::SplitRes_MERGE_VALUES(SDNode *N,
+void DAGTypeLegalizer::SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo,
SDValue &Lo, SDValue &Hi) {
- // A MERGE_VALUES node can produce any number of values. We know that the
- // first illegal one needs to be expanded into Lo/Hi.
- unsigned i;
-
- // The string of legal results gets turned into input operands, which have
- // the same type.
- for (i = 0; isTypeLegal(N->getValueType(i)); ++i)
- ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i)));
-
- // The first illegal result must be the one that needs to be expanded.
- GetSplitOp(N->getOperand(i), Lo, Hi);
-
- // Legalize the rest of the results into the input operands whether they are
- // legal or not.
- unsigned e = N->getNumValues();
- for (++i; i != e; ++i)
- ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i)));
+ SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
+ GetSplitOp(Op, Lo, Hi);
}
void DAGTypeLegalizer::SplitRes_SELECT(SDNode *N, SDValue &Lo,
SDValue &Hi) {
- SDValue LL, LH, RL, RH;
+ SDValue LL, LH, RL, RH, CL, CH;
DebugLoc dl = N->getDebugLoc();
GetSplitOp(N->getOperand(1), LL, LH);
GetSplitOp(N->getOperand(2), RL, RH);
SDValue Cond = N->getOperand(0);
- Lo = DAG.getNode(ISD::SELECT, dl, LL.getValueType(), Cond, LL, RL);
- Hi = DAG.getNode(ISD::SELECT, dl, LH.getValueType(), Cond, LH, RH);
+ 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.getIntPtrConstant(0));
+ CH = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VCondTy, Cond,
+ DAG.getIntPtrConstant(NumElements / 2));
+ }
+
+ Lo = DAG.getNode(N->getOpcode(), dl, LL.getValueType(), CL, LL, RL);
+ Hi = DAG.getNode(N->getOpcode(), dl, LH.getValueType(), CH, LH, RH);
}
void DAGTypeLegalizer::SplitRes_SELECT_CC(SDNode *N, SDValue &Lo,
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