// The routines here perform legalization when the details of the type (such as
// whether it is an integer or a float) do not matter.
// Expansion is the act of changing a computation in an illegal type to be a
-// computation in two identical registers of a smaller type.
+// computation in two identical registers of a smaller type. The Lo/Hi part
+// is required to be stored first in memory on little/big-endian machines.
// Splitting is the act of changing a computation in an illegal type to be a
// computation in two not necessarily identical registers of a smaller type.
+// There are no requirements on how the type is represented in memory.
//
//===----------------------------------------------------------------------===//
#include "LegalizeTypes.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
void DAGTypeLegalizer::ExpandRes_BIT_CONVERT(SDNode *N, SDValue &Lo,
SDValue &Hi) {
- MVT OutVT = N->getValueType(0);
- MVT NOutVT = TLI.getTypeToTransformTo(OutVT);
+ EVT OutVT = N->getValueType(0);
+ EVT NOutVT = TLI.getTypeToTransformTo(*DAG.getContext(), OutVT);
SDValue InOp = N->getOperand(0);
- MVT InVT = InOp.getValueType();
+ EVT InVT = InOp.getValueType();
+ DebugLoc dl = N->getDebugLoc();
// Handle some special cases efficiently.
switch (getTypeAction(InVT)) {
case SoftenFloat:
// Convert the integer operand instead.
SplitInteger(GetSoftenedFloat(InOp), Lo, Hi);
- Lo = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Lo);
- Hi = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Hi);
+ Lo = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Lo);
+ Hi = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Hi);
return;
case ExpandInteger:
case ExpandFloat:
// Convert the expanded pieces of the input.
GetExpandedOp(InOp, Lo, Hi);
- Lo = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Lo);
- Hi = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Hi);
+ Lo = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Lo);
+ Hi = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Hi);
return;
case SplitVector:
- // Convert the split parts of the input if it was split in two.
GetSplitVector(InOp, Lo, Hi);
- if (Lo.getValueType() == Hi.getValueType()) {
- if (TLI.isBigEndian())
- std::swap(Lo, Hi);
- Lo = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Lo);
- Hi = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Hi);
- return;
- }
- break;
+ if (TLI.isBigEndian())
+ std::swap(Lo, Hi);
+ Lo = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Lo);
+ Hi = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Hi);
+ return;
case ScalarizeVector:
// Convert the element instead.
SplitInteger(BitConvertToInteger(GetScalarizedVector(InOp)), Lo, Hi);
- Lo = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Lo);
- Hi = DAG.getNode(ISD::BIT_CONVERT, NOutVT, Hi);
+ Lo = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Lo);
+ Hi = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Hi);
+ return;
+ case WidenVector: {
+ assert(!(InVT.getVectorNumElements() & 1) && "Unsupported BIT_CONVERT");
+ InOp = GetWidenedVector(InOp);
+ EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(),
+ InVT.getVectorNumElements()/2);
+ Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
+ DAG.getIntPtrConstant(0));
+ Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
+ DAG.getIntPtrConstant(InNVT.getVectorNumElements()));
+ if (TLI.isBigEndian())
+ std::swap(Lo, Hi);
+ Lo = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Lo);
+ Hi = DAG.getNode(ISD::BIT_CONVERT, dl, NOutVT, Hi);
return;
+ }
+ }
+
+ if (InVT.isVector() && OutVT.isInteger()) {
+ // Handle cases like i64 = BIT_CONVERT v1i64 on x86, where the operand
+ // is legal but the result is not.
+ EVT NVT = EVT::getVectorVT(*DAG.getContext(), NOutVT, 2);
+
+ if (isTypeLegal(NVT)) {
+ SDValue CastInOp = DAG.getNode(ISD::BIT_CONVERT, 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));
+
+ if (TLI.isBigEndian())
+ std::swap(Lo, Hi);
+
+ return;
+ }
}
// Lower the bit-convert to a store/load from the stack.
// Create the stack frame object. Make sure it is aligned for both
// the source and expanded destination types.
unsigned Alignment =
- TLI.getTargetData()->getPrefTypeAlignment(NOutVT.getTypeForMVT());
+ TLI.getTargetData()->getPrefTypeAlignment(NOutVT.
+ getTypeForEVT(*DAG.getContext()));
SDValue StackPtr = DAG.CreateStackTemporary(InVT, Alignment);
+ int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex();
+ const Value *SV = PseudoSourceValue::getFixedStack(SPFI);
// Emit a store to the stack slot.
- SDValue Store = DAG.getStore(DAG.getEntryNode(), InOp, StackPtr, NULL, 0);
+ SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, InOp, StackPtr, SV, 0,
+ false, false, 0);
// Load the first half from the stack slot.
- Lo = DAG.getLoad(NOutVT, Store, StackPtr, NULL, 0);
+ Lo = DAG.getLoad(NOutVT, dl, Store, StackPtr, SV, 0, false, false, 0);
// Increment the pointer to the other half.
unsigned IncrementSize = NOutVT.getSizeInBits() / 8;
- StackPtr = DAG.getNode(ISD::ADD, StackPtr.getValueType(), StackPtr,
+ StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
DAG.getIntPtrConstant(IncrementSize));
// Load the second half from the stack slot.
- Hi = DAG.getLoad(NOutVT, Store, StackPtr, NULL, 0, false,
- MinAlign(Alignment, IncrementSize));
+ Hi = DAG.getLoad(NOutVT, dl, Store, StackPtr, SV, IncrementSize, false,
+ false, MinAlign(Alignment, IncrementSize));
// Handle endianness of the load.
if (TLI.isBigEndian())
assert(Part.getValueType() == N->getValueType(0) &&
"Type twice as big as expanded type not itself expanded!");
- MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
- Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Part,
- DAG.getConstant(0, TLI.getPointerTy()));
- Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Part,
- DAG.getConstant(1, TLI.getPointerTy()));
+ GetPairElements(Part, Lo, Hi);
}
void DAGTypeLegalizer::ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue OldVec = N->getOperand(0);
unsigned OldElts = OldVec.getValueType().getVectorNumElements();
+ DebugLoc dl = N->getDebugLoc();
// Convert to a vector of the expanded element type, for example
// <3 x i64> -> <6 x i32>.
- MVT OldVT = N->getValueType(0);
- MVT NewVT = TLI.getTypeToTransformTo(OldVT);
+ EVT OldVT = N->getValueType(0);
+ EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT);
- SDValue NewVec = DAG.getNode(ISD::BIT_CONVERT,
- MVT::getVectorVT(NewVT, 2*OldElts),
- OldVec);
+ SDValue NewVec = DAG.getNode(ISD::BIT_CONVERT, dl,
+ EVT::getVectorVT(*DAG.getContext(),
+ NewVT, 2*OldElts),
+ OldVec);
// Extract the elements at 2 * Idx and 2 * Idx + 1 from the new vector.
SDValue Idx = N->getOperand(1);
// Make sure the type of Idx is big enough to hold the new values.
if (Idx.getValueType().bitsLT(TLI.getPointerTy()))
- Idx = DAG.getNode(ISD::ZERO_EXTEND, TLI.getPointerTy(), Idx);
+ Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx);
- Idx = DAG.getNode(ISD::ADD, Idx.getValueType(), Idx, Idx);
- Lo = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, NewVT, NewVec, Idx);
+ Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, Idx);
+ Lo = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NewVT, NewVec, Idx);
- Idx = DAG.getNode(ISD::ADD, Idx.getValueType(), Idx,
+ Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx,
DAG.getConstant(1, Idx.getValueType()));
- Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, NewVT, NewVec, Idx);
+ Hi = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, NewVT, NewVec, Idx);
if (TLI.isBigEndian())
std::swap(Lo, Hi);
void DAGTypeLegalizer::ExpandRes_NormalLoad(SDNode *N, SDValue &Lo,
SDValue &Hi) {
assert(ISD::isNormalLoad(N) && "This routine only for normal loads!");
+ DebugLoc dl = N->getDebugLoc();
LoadSDNode *LD = cast<LoadSDNode>(N);
- MVT NVT = TLI.getTypeToTransformTo(LD->getValueType(0));
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), LD->getValueType(0));
SDValue Chain = LD->getChain();
SDValue Ptr = LD->getBasePtr();
int SVOffset = LD->getSrcValueOffset();
unsigned Alignment = LD->getAlignment();
bool isVolatile = LD->isVolatile();
+ bool isNonTemporal = LD->isNonTemporal();
assert(NVT.isByteSized() && "Expanded type not byte sized!");
- Lo = DAG.getLoad(NVT, Chain, Ptr, LD->getSrcValue(), SVOffset,
- isVolatile, Alignment);
+ Lo = DAG.getLoad(NVT, dl, Chain, Ptr, LD->getSrcValue(), SVOffset,
+ isVolatile, isNonTemporal, Alignment);
// Increment the pointer to the other half.
unsigned IncrementSize = NVT.getSizeInBits() / 8;
- Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr,
+ Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
DAG.getIntPtrConstant(IncrementSize));
- Hi = DAG.getLoad(NVT, Chain, Ptr, LD->getSrcValue(), SVOffset+IncrementSize,
- isVolatile, MinAlign(Alignment, IncrementSize));
+ Hi = DAG.getLoad(NVT, dl, Chain, Ptr, LD->getSrcValue(),
+ SVOffset+IncrementSize,
+ isVolatile, isNonTemporal,
+ MinAlign(Alignment, IncrementSize));
// Build a factor node to remember that this load is independent of the
// other one.
- Chain = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1),
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1),
Hi.getValue(1));
// Handle endianness of the load.
}
void DAGTypeLegalizer::ExpandRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi) {
- MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Chain = N->getOperand(0);
SDValue Ptr = N->getOperand(1);
+ DebugLoc dl = N->getDebugLoc();
- Lo = DAG.getVAArg(NVT, Chain, Ptr, N->getOperand(2));
- Hi = DAG.getVAArg(NVT, Lo.getValue(1), Ptr, N->getOperand(2));
+ Lo = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2));
+ Hi = DAG.getVAArg(NVT, dl, Lo.getValue(1), Ptr, N->getOperand(2));
// Handle endianness of the load.
if (TLI.isBigEndian())
//===--------------------------------------------------------------------===//
SDValue DAGTypeLegalizer::ExpandOp_BIT_CONVERT(SDNode *N) {
+ DebugLoc dl = N->getDebugLoc();
if (N->getValueType(0).isVector()) {
// An illegal expanding type is being converted to a legal vector type.
// Make a two element vector out of the expanded parts and convert that
// 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 = BIT_CONVERT i64 into v1i64 = BIT_CONVERT v2i32.
- MVT OVT = N->getOperand(0).getValueType();
- MVT NVT = MVT::getVectorVT(TLI.getTypeToTransformTo(OVT), 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];
if (TLI.isBigEndian())
std::swap(Parts[0], Parts[1]);
- SDValue Vec = DAG.getNode(ISD::BUILD_VECTOR, NVT, Parts, 2);
- return DAG.getNode(ISD::BIT_CONVERT, N->getValueType(0), Vec);
+ SDValue Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, NVT, Parts, 2);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, N->getValueType(0), Vec);
}
}
SDValue DAGTypeLegalizer::ExpandOp_BUILD_VECTOR(SDNode *N) {
// The vector type is legal but the element type needs expansion.
- MVT VecVT = N->getValueType(0);
+ EVT VecVT = N->getValueType(0);
unsigned NumElts = VecVT.getVectorNumElements();
- MVT OldVT = N->getOperand(0).getValueType();
- MVT NewVT = TLI.getTypeToTransformTo(OldVT);
+ EVT OldVT = N->getOperand(0).getValueType();
+ EVT NewVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldVT);
+ DebugLoc dl = N->getDebugLoc();
+
+ assert(OldVT == VecVT.getVectorElementType() &&
+ "BUILD_VECTOR operand type doesn't match vector element type!");
// Build a vector of twice the length out of the expanded elements.
// For example <3 x i64> -> <6 x i32>.
NewElts.push_back(Hi);
}
- SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR,
- MVT::getVectorVT(NewVT, NewElts.size()),
- &NewElts[0], NewElts.size());
+ SDValue NewVec = DAG.getNode(ISD::BUILD_VECTOR, dl,
+ EVT::getVectorVT(*DAG.getContext(),
+ NewVT, NewElts.size()),
+ &NewElts[0], NewElts.size());
// Convert the new vector to the old vector type.
- return DAG.getNode(ISD::BIT_CONVERT, VecVT, NewVec);
+ return DAG.getNode(ISD::BIT_CONVERT, dl, VecVT, NewVec);
}
SDValue DAGTypeLegalizer::ExpandOp_EXTRACT_ELEMENT(SDNode *N) {
return cast<ConstantSDNode>(N->getOperand(1))->getZExtValue() ? Hi : Lo;
}
+SDValue DAGTypeLegalizer::ExpandOp_INSERT_VECTOR_ELT(SDNode *N) {
+ // The vector type is legal but the element type needs expansion.
+ EVT VecVT = N->getValueType(0);
+ unsigned NumElts = VecVT.getVectorNumElements();
+ DebugLoc dl = N->getDebugLoc();
+
+ SDValue Val = N->getOperand(1);
+ EVT OldEVT = Val.getValueType();
+ EVT NewEVT = TLI.getTypeToTransformTo(*DAG.getContext(), OldEVT);
+
+ assert(OldEVT == VecVT.getVectorElementType() &&
+ "Inserted element type doesn't match vector element type!");
+
+ // Bitconvert to a vector of twice the length with elements of the expanded
+ // type, insert the expanded vector elements, and then convert back.
+ EVT NewVecVT = EVT::getVectorVT(*DAG.getContext(), NewEVT, NumElts*2);
+ SDValue NewVec = DAG.getNode(ISD::BIT_CONVERT, dl,
+ NewVecVT, N->getOperand(0));
+
+ SDValue Lo, Hi;
+ GetExpandedOp(Val, Lo, Hi);
+ if (TLI.isBigEndian())
+ std::swap(Lo, Hi);
+
+ SDValue Idx = N->getOperand(2);
+ Idx = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, Idx);
+ NewVec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, NewVecVT, NewVec, Lo, Idx);
+ Idx = DAG.getNode(ISD::ADD, dl,
+ Idx.getValueType(), Idx, DAG.getIntPtrConstant(1));
+ NewVec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, NewVecVT, NewVec, Hi, Idx);
+
+ // Convert the new vector to the old vector type.
+ return DAG.getNode(ISD::BIT_CONVERT, dl, VecVT, NewVec);
+}
+
+SDValue DAGTypeLegalizer::ExpandOp_SCALAR_TO_VECTOR(SDNode *N) {
+ DebugLoc dl = N->getDebugLoc();
+ EVT VT = N->getValueType(0);
+ assert(VT.getVectorElementType() == N->getOperand(0).getValueType() &&
+ "SCALAR_TO_VECTOR operand type doesn't match vector element type!");
+ unsigned NumElts = VT.getVectorNumElements();
+ SmallVector<SDValue, 16> Ops(NumElts);
+ Ops[0] = N->getOperand(0);
+ SDValue UndefVal = DAG.getUNDEF(Ops[0].getValueType());
+ for (unsigned i = 1; i < NumElts; ++i)
+ Ops[i] = UndefVal;
+ return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], NumElts);
+}
+
SDValue DAGTypeLegalizer::ExpandOp_NormalStore(SDNode *N, unsigned OpNo) {
assert(ISD::isNormalStore(N) && "This routine only for normal stores!");
assert(OpNo == 1 && "Can only expand the stored value so far");
+ DebugLoc dl = N->getDebugLoc();
StoreSDNode *St = cast<StoreSDNode>(N);
- MVT NVT = TLI.getTypeToTransformTo(St->getValue().getValueType());
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(),
+ St->getValue().getValueType());
SDValue Chain = St->getChain();
SDValue Ptr = St->getBasePtr();
int SVOffset = St->getSrcValueOffset();
unsigned Alignment = St->getAlignment();
bool isVolatile = St->isVolatile();
+ bool isNonTemporal = St->isNonTemporal();
assert(NVT.isByteSized() && "Expanded type not byte sized!");
unsigned IncrementSize = NVT.getSizeInBits() / 8;
if (TLI.isBigEndian())
std::swap(Lo, Hi);
- Lo = DAG.getStore(Chain, Lo, Ptr, St->getSrcValue(), SVOffset,
- isVolatile, Alignment);
+ Lo = DAG.getStore(Chain, dl, Lo, Ptr, St->getSrcValue(), SVOffset,
+ isVolatile, isNonTemporal, Alignment);
- Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr,
+ Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
DAG.getIntPtrConstant(IncrementSize));
assert(isTypeLegal(Ptr.getValueType()) && "Pointers must be legal!");
- Hi = DAG.getStore(Chain, Hi, Ptr, St->getSrcValue(), SVOffset + IncrementSize,
- isVolatile, MinAlign(Alignment, IncrementSize));
+ Hi = DAG.getStore(Chain, dl, Hi, Ptr, St->getSrcValue(),
+ SVOffset + IncrementSize,
+ isVolatile, isNonTemporal,
+ MinAlign(Alignment, IncrementSize));
- return DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi);
+ return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi);
}
void DAGTypeLegalizer::SplitRes_SELECT(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue LL, LH, RL, RH;
+ 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, LL.getValueType(), Cond, LL, RL);
- Hi = DAG.getNode(ISD::SELECT, LH.getValueType(), Cond, LH, RH);
+ Lo = DAG.getNode(ISD::SELECT, dl, LL.getValueType(), Cond, LL, RL);
+ Hi = DAG.getNode(ISD::SELECT, dl, LH.getValueType(), Cond, LH, RH);
}
void DAGTypeLegalizer::SplitRes_SELECT_CC(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue LL, LH, RL, RH;
+ DebugLoc dl = N->getDebugLoc();
GetSplitOp(N->getOperand(2), LL, LH);
GetSplitOp(N->getOperand(3), RL, RH);
- Lo = DAG.getNode(ISD::SELECT_CC, LL.getValueType(), N->getOperand(0),
+ Lo = DAG.getNode(ISD::SELECT_CC, dl, LL.getValueType(), N->getOperand(0),
N->getOperand(1), LL, RL, N->getOperand(4));
- Hi = DAG.getNode(ISD::SELECT_CC, LH.getValueType(), N->getOperand(0),
+ Hi = DAG.getNode(ISD::SELECT_CC, dl, LH.getValueType(), N->getOperand(0),
N->getOperand(1), LH, RH, N->getOperand(4));
}
void DAGTypeLegalizer::SplitRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi) {
- MVT LoVT, HiVT;
+ EVT LoVT, HiVT;
GetSplitDestVTs(N->getValueType(0), LoVT, HiVT);
- Lo = DAG.getNode(ISD::UNDEF, LoVT);
- Hi = DAG.getNode(ISD::UNDEF, HiVT);
+ Lo = DAG.getUNDEF(LoVT);
+ Hi = DAG.getUNDEF(HiVT);
}