#include "llvm/CodeGen/SelectionDAG.h"
#include "SDNodeOrdering.h"
#include "SDNodeDbgValue.h"
#include "llvm/Constants.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Function.h"
#include "llvm/GlobalAlias.h"
#include "llvm/GlobalVariable.h"
#include "llvm/Intrinsics.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CallingConv.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetSelectionDAGInfo.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetIntrinsicInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Mutex.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
#include <cmath>
using namespace llvm;
static SDVTList makeVTList(const EVT *VTs, unsigned NumVTs) {
SDVTList Res = {VTs, NumVTs};
return Res;
}
static const fltSemantics *EVTToAPFloatSemantics(EVT VT) {
switch (VT.getSimpleVT().SimpleTy) {
default: llvm_unreachable("Unknown FP format");
case MVT::f32: return &APFloat::IEEEsingle;
case MVT::f64: return &APFloat::IEEEdouble;
case MVT::f80: return &APFloat::x87DoubleExtended;
case MVT::f128: return &APFloat::IEEEquad;
case MVT::ppcf128: return &APFloat::PPCDoubleDouble;
}
}
SelectionDAG::DAGUpdateListener::~DAGUpdateListener() {}
bool ConstantFPSDNode::isExactlyValue(const APFloat& V) const {
return getValueAPF().bitwiseIsEqual(V);
}
bool ConstantFPSDNode::isValueValidForType(EVT VT,
const APFloat& Val) {
assert(VT.isFloatingPoint() && "Can only convert between FP types");
if (VT == MVT::ppcf128 ||
&Val.getSemantics() == &APFloat::PPCDoubleDouble)
return false;
APFloat Val2 = APFloat(Val);
bool losesInfo;
(void) Val2.convert(*EVTToAPFloatSemantics(VT), APFloat::rmNearestTiesToEven,
&losesInfo);
return !losesInfo;
}
bool ISD::isBuildVectorAllOnes(const SDNode *N) {
if (N->getOpcode() == ISD::BITCAST)
N = N->getOperand(0).getNode();
if (N->getOpcode() != ISD::BUILD_VECTOR) return false;
unsigned i = 0, e = N->getNumOperands();
while (i != e && N->getOperand(i).getOpcode() == ISD::UNDEF)
++i;
if (i == e) return false;
SDValue NotZero = N->getOperand(i);
if (isa<ConstantSDNode>(NotZero)) {
if (!cast<ConstantSDNode>(NotZero)->isAllOnesValue())
return false;
} else if (isa<ConstantFPSDNode>(NotZero)) {
if (!cast<ConstantFPSDNode>(NotZero)->getValueAPF().
bitcastToAPInt().isAllOnesValue())
return false;
} else
return false;
for (++i; i != e; ++i)
if (N->getOperand(i) != NotZero &&
N->getOperand(i).getOpcode() != ISD::UNDEF)
return false;
return true;
}
bool ISD::isBuildVectorAllZeros(const SDNode *N) {
if (N->getOpcode() == ISD::BITCAST)
N = N->getOperand(0).getNode();
if (N->getOpcode() != ISD::BUILD_VECTOR) return false;
unsigned i = 0, e = N->getNumOperands();
while (i != e && N->getOperand(i).getOpcode() == ISD::UNDEF)
++i;
if (i == e) return false;
SDValue Zero = N->getOperand(i);
if (isa<ConstantSDNode>(Zero)) {
if (!cast<ConstantSDNode>(Zero)->isNullValue())
return false;
} else if (isa<ConstantFPSDNode>(Zero)) {
if (!cast<ConstantFPSDNode>(Zero)->getValueAPF().isPosZero())
return false;
} else
return false;
for (++i; i != e; ++i)
if (N->getOperand(i) != Zero &&
N->getOperand(i).getOpcode() != ISD::UNDEF)
return false;
return true;
}
bool ISD::isScalarToVector(const SDNode *N) {
if (N->getOpcode() == ISD::SCALAR_TO_VECTOR)
return true;
if (N->getOpcode() != ISD::BUILD_VECTOR)
return false;
if (N->getOperand(0).getOpcode() == ISD::UNDEF)
return false;
unsigned NumElems = N->getNumOperands();
if (NumElems == 1)
return false;
for (unsigned i = 1; i < NumElems; ++i) {
SDValue V = N->getOperand(i);
if (V.getOpcode() != ISD::UNDEF)
return false;
}
return true;
}
ISD::CondCode ISD::getSetCCSwappedOperands(ISD::CondCode Operation) {
unsigned OldL = (Operation >> 2) & 1;
unsigned OldG = (Operation >> 1) & 1;
return ISD::CondCode((Operation & ~6) | (OldL << 1) | (OldG << 2)); }
ISD::CondCode ISD::getSetCCInverse(ISD::CondCode Op, bool isInteger) {
unsigned Operation = Op;
if (isInteger)
Operation ^= 7; else
Operation ^= 15;
if (Operation > ISD::SETTRUE2)
Operation &= ~8;
return ISD::CondCode(Operation);
}
static int isSignedOp(ISD::CondCode Opcode) {
switch (Opcode) {
default: llvm_unreachable("Illegal integer setcc operation!");
case ISD::SETEQ:
case ISD::SETNE: return 0;
case ISD::SETLT:
case ISD::SETLE:
case ISD::SETGT:
case ISD::SETGE: return 1;
case ISD::SETULT:
case ISD::SETULE:
case ISD::SETUGT:
case ISD::SETUGE: return 2;
}
}
ISD::CondCode ISD::getSetCCOrOperation(ISD::CondCode Op1, ISD::CondCode Op2,
bool isInteger) {
if (isInteger && (isSignedOp(Op1) | isSignedOp(Op2)) == 3)
return ISD::SETCC_INVALID;
unsigned Op = Op1 | Op2;
if (Op > ISD::SETTRUE2)
Op &= ~16;
if (isInteger && Op == ISD::SETUNE) Op = ISD::SETNE;
return ISD::CondCode(Op);
}
ISD::CondCode ISD::getSetCCAndOperation(ISD::CondCode Op1, ISD::CondCode Op2,
bool isInteger) {
if (isInteger && (isSignedOp(Op1) | isSignedOp(Op2)) == 3)
return ISD::SETCC_INVALID;
ISD::CondCode Result = ISD::CondCode(Op1 & Op2);
if (isInteger) {
switch (Result) {
default: break;
case ISD::SETUO : Result = ISD::SETFALSE; break; case ISD::SETOEQ: case ISD::SETUEQ: Result = ISD::SETEQ ; break; case ISD::SETOLT: Result = ISD::SETULT ; break; case ISD::SETOGT: Result = ISD::SETUGT ; break; }
}
return Result;
}
static void AddNodeIDOpcode(FoldingSetNodeID &ID, unsigned OpC) {
ID.AddInteger(OpC);
}
static void AddNodeIDValueTypes(FoldingSetNodeID &ID, SDVTList VTList) {
ID.AddPointer(VTList.VTs);
}
static void AddNodeIDOperands(FoldingSetNodeID &ID,
const SDValue *Ops, unsigned NumOps) {
for (; NumOps; --NumOps, ++Ops) {
ID.AddPointer(Ops->getNode());
ID.AddInteger(Ops->getResNo());
}
}
static void AddNodeIDOperands(FoldingSetNodeID &ID,
const SDUse *Ops, unsigned NumOps) {
for (; NumOps; --NumOps, ++Ops) {
ID.AddPointer(Ops->getNode());
ID.AddInteger(Ops->getResNo());
}
}
static void AddNodeIDNode(FoldingSetNodeID &ID,
unsigned short OpC, SDVTList VTList,
const SDValue *OpList, unsigned N) {
AddNodeIDOpcode(ID, OpC);
AddNodeIDValueTypes(ID, VTList);
AddNodeIDOperands(ID, OpList, N);
}
static void AddNodeIDCustom(FoldingSetNodeID &ID, const SDNode *N) {
switch (N->getOpcode()) {
case ISD::TargetExternalSymbol:
case ISD::ExternalSymbol:
llvm_unreachable("Should only be used on nodes with operands");
default: break; case ISD::TargetConstant:
case ISD::Constant:
ID.AddPointer(cast<ConstantSDNode>(N)->getConstantIntValue());
break;
case ISD::TargetConstantFP:
case ISD::ConstantFP: {
ID.AddPointer(cast<ConstantFPSDNode>(N)->getConstantFPValue());
break;
}
case ISD::TargetGlobalAddress:
case ISD::GlobalAddress:
case ISD::TargetGlobalTLSAddress:
case ISD::GlobalTLSAddress: {
const GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(N);
ID.AddPointer(GA->getGlobal());
ID.AddInteger(GA->getOffset());
ID.AddInteger(GA->getTargetFlags());
break;
}
case ISD::BasicBlock:
ID.AddPointer(cast<BasicBlockSDNode>(N)->getBasicBlock());
break;
case ISD::Register:
ID.AddInteger(cast<RegisterSDNode>(N)->getReg());
break;
case ISD::SRCVALUE:
ID.AddPointer(cast<SrcValueSDNode>(N)->getValue());
break;
case ISD::FrameIndex:
case ISD::TargetFrameIndex:
ID.AddInteger(cast<FrameIndexSDNode>(N)->getIndex());
break;
case ISD::JumpTable:
case ISD::TargetJumpTable:
ID.AddInteger(cast<JumpTableSDNode>(N)->getIndex());
ID.AddInteger(cast<JumpTableSDNode>(N)->getTargetFlags());
break;
case ISD::ConstantPool:
case ISD::TargetConstantPool: {
const ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(N);
ID.AddInteger(CP->getAlignment());
ID.AddInteger(CP->getOffset());
if (CP->isMachineConstantPoolEntry())
CP->getMachineCPVal()->AddSelectionDAGCSEId(ID);
else
ID.AddPointer(CP->getConstVal());
ID.AddInteger(CP->getTargetFlags());
break;
}
case ISD::LOAD: {
const LoadSDNode *LD = cast<LoadSDNode>(N);
ID.AddInteger(LD->getMemoryVT().getRawBits());
ID.AddInteger(LD->getRawSubclassData());
break;
}
case ISD::STORE: {
const StoreSDNode *ST = cast<StoreSDNode>(N);
ID.AddInteger(ST->getMemoryVT().getRawBits());
ID.AddInteger(ST->getRawSubclassData());
break;
}
case ISD::ATOMIC_CMP_SWAP:
case ISD::ATOMIC_SWAP:
case ISD::ATOMIC_LOAD_ADD:
case ISD::ATOMIC_LOAD_SUB:
case ISD::ATOMIC_LOAD_AND:
case ISD::ATOMIC_LOAD_OR:
case ISD::ATOMIC_LOAD_XOR:
case ISD::ATOMIC_LOAD_NAND:
case ISD::ATOMIC_LOAD_MIN:
case ISD::ATOMIC_LOAD_MAX:
case ISD::ATOMIC_LOAD_UMIN:
case ISD::ATOMIC_LOAD_UMAX: {
const AtomicSDNode *AT = cast<AtomicSDNode>(N);
ID.AddInteger(AT->getMemoryVT().getRawBits());
ID.AddInteger(AT->getRawSubclassData());
break;
}
case ISD::VECTOR_SHUFFLE: {
const ShuffleVectorSDNode *SVN = cast<ShuffleVectorSDNode>(N);
for (unsigned i = 0, e = N->getValueType(0).getVectorNumElements();
i != e; ++i)
ID.AddInteger(SVN->getMaskElt(i));
break;
}
case ISD::TargetBlockAddress:
case ISD::BlockAddress: {
ID.AddPointer(cast<BlockAddressSDNode>(N)->getBlockAddress());
ID.AddInteger(cast<BlockAddressSDNode>(N)->getTargetFlags());
break;
}
} }
static void AddNodeIDNode(FoldingSetNodeID &ID, const SDNode *N) {
AddNodeIDOpcode(ID, N->getOpcode());
AddNodeIDValueTypes(ID, N->getVTList());
AddNodeIDOperands(ID, N->op_begin(), N->getNumOperands());
AddNodeIDCustom(ID, N);
}
static inline unsigned
encodeMemSDNodeFlags(int ConvType, ISD::MemIndexedMode AM, bool isVolatile,
bool isNonTemporal) {
assert((ConvType & 3) == ConvType &&
"ConvType may not require more than 2 bits!");
assert((AM & 7) == AM &&
"AM may not require more than 3 bits!");
return ConvType |
(AM << 2) |
(isVolatile << 5) |
(isNonTemporal << 6);
}
static bool doNotCSE(SDNode *N) {
if (N->getValueType(0) == MVT::Glue)
return true;
switch (N->getOpcode()) {
default: break;
case ISD::HANDLENODE:
case ISD::EH_LABEL:
return true; }
for (unsigned i = 1, e = N->getNumValues(); i != e; ++i)
if (N->getValueType(i) == MVT::Glue)
return true;
return false;
}
void SelectionDAG::RemoveDeadNodes() {
HandleSDNode Dummy(getRoot());
SmallVector<SDNode*, 128> DeadNodes;
for (allnodes_iterator I = allnodes_begin(), E = allnodes_end(); I != E; ++I)
if (I->use_empty())
DeadNodes.push_back(I);
RemoveDeadNodes(DeadNodes);
setRoot(Dummy.getValue());
}
void SelectionDAG::RemoveDeadNodes(SmallVectorImpl<SDNode *> &DeadNodes,
DAGUpdateListener *UpdateListener) {
while (!DeadNodes.empty()) {
SDNode *N = DeadNodes.pop_back_val();
if (UpdateListener)
UpdateListener->NodeDeleted(N, 0);
RemoveNodeFromCSEMaps(N);
for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ) {
SDUse &Use = *I++;
SDNode *Operand = Use.getNode();
Use.set(SDValue());
if (Operand->use_empty())
DeadNodes.push_back(Operand);
}
DeallocateNode(N);
}
}
void SelectionDAG::RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener){
SmallVector<SDNode*, 16> DeadNodes(1, N);
RemoveDeadNodes(DeadNodes, UpdateListener);
}
void SelectionDAG::DeleteNode(SDNode *N) {
RemoveNodeFromCSEMaps(N);
DeleteNodeNotInCSEMaps(N);
}
void SelectionDAG::DeleteNodeNotInCSEMaps(SDNode *N) {
assert(N != AllNodes.begin() && "Cannot delete the entry node!");
assert(N->use_empty() && "Cannot delete a node that is not dead!");
N->DropOperands();
DeallocateNode(N);
}
void SelectionDAG::DeallocateNode(SDNode *N) {
if (N->OperandsNeedDelete)
delete[] N->OperandList;
N->NodeType = ISD::DELETED_NODE;
NodeAllocator.Deallocate(AllNodes.remove(N));
Ordering->remove(N);
SmallVector<SDDbgValue*, 2> &DbgVals = DbgInfo->getSDDbgValues(N);
for (unsigned i = 0, e = DbgVals.size(); i != e; ++i)
DbgVals[i]->setIsInvalidated();
}
bool SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
bool Erased = false;
switch (N->getOpcode()) {
case ISD::HANDLENODE: return false; case ISD::CONDCODE:
assert(CondCodeNodes[cast<CondCodeSDNode>(N)->get()] &&
"Cond code doesn't exist!");
Erased = CondCodeNodes[cast<CondCodeSDNode>(N)->get()] != 0;
CondCodeNodes[cast<CondCodeSDNode>(N)->get()] = 0;
break;
case ISD::ExternalSymbol:
Erased = ExternalSymbols.erase(cast<ExternalSymbolSDNode>(N)->getSymbol());
break;
case ISD::TargetExternalSymbol: {
ExternalSymbolSDNode *ESN = cast<ExternalSymbolSDNode>(N);
Erased = TargetExternalSymbols.erase(
std::pair<std::string,unsigned char>(ESN->getSymbol(),
ESN->getTargetFlags()));
break;
}
case ISD::VALUETYPE: {
EVT VT = cast<VTSDNode>(N)->getVT();
if (VT.isExtended()) {
Erased = ExtendedValueTypeNodes.erase(VT);
} else {
Erased = ValueTypeNodes[VT.getSimpleVT().SimpleTy] != 0;
ValueTypeNodes[VT.getSimpleVT().SimpleTy] = 0;
}
break;
}
default:
assert(N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!");
assert(N->getOpcode() != ISD::EntryToken && "EntryToken in CSEMap!");
Erased = CSEMap.RemoveNode(N);
break;
}
#ifndef NDEBUG
if (!Erased && N->getValueType(N->getNumValues()-1) != MVT::Glue &&
!N->isMachineOpcode() && !doNotCSE(N)) {
N->dump(this);
dbgs() << "\n";
llvm_unreachable("Node is not in map!");
}
#endif
return Erased;
}
void
SelectionDAG::AddModifiedNodeToCSEMaps(SDNode *N,
DAGUpdateListener *UpdateListener) {
if (!doNotCSE(N)) {
SDNode *Existing = CSEMap.GetOrInsertNode(N);
if (Existing != N) {
ReplaceAllUsesWith(N, Existing, UpdateListener);
if (UpdateListener)
UpdateListener->NodeDeleted(N, Existing);
DeleteNodeNotInCSEMaps(N);
return;
}
}
if (UpdateListener)
UpdateListener->NodeUpdated(N);
}
SDNode *SelectionDAG::FindModifiedNodeSlot(SDNode *N, SDValue Op,
void *&InsertPos) {
if (doNotCSE(N))
return 0;
SDValue Ops[] = { Op };
FoldingSetNodeID ID;
AddNodeIDNode(ID, N->getOpcode(), N->getVTList(), Ops, 1);
AddNodeIDCustom(ID, N);
SDNode *Node = CSEMap.FindNodeOrInsertPos(ID, InsertPos);
return Node;
}
SDNode *SelectionDAG::FindModifiedNodeSlot(SDNode *N,
SDValue Op1, SDValue Op2,
void *&InsertPos) {
if (doNotCSE(N))
return 0;
SDValue Ops[] = { Op1, Op2 };
FoldingSetNodeID ID;
AddNodeIDNode(ID, N->getOpcode(), N->getVTList(), Ops, 2);
AddNodeIDCustom(ID, N);
SDNode *Node = CSEMap.FindNodeOrInsertPos(ID, InsertPos);
return Node;
}
SDNode *SelectionDAG::FindModifiedNodeSlot(SDNode *N,
const SDValue *Ops,unsigned NumOps,
void *&InsertPos) {
if (doNotCSE(N))
return 0;
FoldingSetNodeID ID;
AddNodeIDNode(ID, N->getOpcode(), N->getVTList(), Ops, NumOps);
AddNodeIDCustom(ID, N);
SDNode *Node = CSEMap.FindNodeOrInsertPos(ID, InsertPos);
return Node;
}
#ifndef NDEBUG
static void VerifyNodeCommon(SDNode *N) {
switch (N->getOpcode()) {
default:
break;
case ISD::BUILD_PAIR: {
EVT VT = N->getValueType(0);
assert(N->getNumValues() == 1 && "Too many results!");
assert(!VT.isVector() && (VT.isInteger() || VT.isFloatingPoint()) &&
"Wrong return type!");
assert(N->getNumOperands() == 2 && "Wrong number of operands!");
assert(N->getOperand(0).getValueType() == N->getOperand(1).getValueType() &&
"Mismatched operand types!");
assert(N->getOperand(0).getValueType().isInteger() == VT.isInteger() &&
"Wrong operand type!");
assert(VT.getSizeInBits() == 2 * N->getOperand(0).getValueSizeInBits() &&
"Wrong return type size");
break;
}
case ISD::BUILD_VECTOR: {
assert(N->getNumValues() == 1 && "Too many results!");
assert(N->getValueType(0).isVector() && "Wrong return type!");
assert(N->getNumOperands() == N->getValueType(0).getVectorNumElements() &&
"Wrong number of operands!");
EVT EltVT = N->getValueType(0).getVectorElementType();
for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ++I)
assert((I->getValueType() == EltVT ||
(EltVT.isInteger() && I->getValueType().isInteger() &&
EltVT.bitsLE(I->getValueType()))) &&
"Wrong operand type!");
break;
}
}
}
static void VerifySDNode(SDNode *N) {
assert(!isa<MemSDNode>(N) && "Bad MemSDNode!");
assert(!isa<ShuffleVectorSDNode>(N) && "Bad ShuffleVectorSDNode!");
assert(!isa<ConstantSDNode>(N) && "Bad ConstantSDNode!");
assert(!isa<ConstantFPSDNode>(N) && "Bad ConstantFPSDNode!");
assert(!isa<GlobalAddressSDNode>(N) && "Bad GlobalAddressSDNode!");
assert(!isa<FrameIndexSDNode>(N) && "Bad FrameIndexSDNode!");
assert(!isa<JumpTableSDNode>(N) && "Bad JumpTableSDNode!");
assert(!isa<ConstantPoolSDNode>(N) && "Bad ConstantPoolSDNode!");
assert(!isa<BasicBlockSDNode>(N) && "Bad BasicBlockSDNode!");
assert(!isa<SrcValueSDNode>(N) && "Bad SrcValueSDNode!");
assert(!isa<MDNodeSDNode>(N) && "Bad MDNodeSDNode!");
assert(!isa<RegisterSDNode>(N) && "Bad RegisterSDNode!");
assert(!isa<BlockAddressSDNode>(N) && "Bad BlockAddressSDNode!");
assert(!isa<EHLabelSDNode>(N) && "Bad EHLabelSDNode!");
assert(!isa<ExternalSymbolSDNode>(N) && "Bad ExternalSymbolSDNode!");
assert(!isa<CondCodeSDNode>(N) && "Bad CondCodeSDNode!");
assert(!isa<CvtRndSatSDNode>(N) && "Bad CvtRndSatSDNode!");
assert(!isa<VTSDNode>(N) && "Bad VTSDNode!");
assert(!isa<MachineSDNode>(N) && "Bad MachineSDNode!");
VerifyNodeCommon(N);
}
static void VerifyMachineNode(SDNode *N) {
VerifyNodeCommon(N);
}
#endif // NDEBUG
unsigned SelectionDAG::getEVTAlignment(EVT VT) const {
const Type *Ty = VT == MVT::iPTR ?
PointerType::get(Type::getInt8Ty(*getContext()), 0) :
VT.getTypeForEVT(*getContext());
return TLI.getTargetData()->getABITypeAlignment(Ty);
}
SelectionDAG::SelectionDAG(const TargetMachine &tm)
: TM(tm), TLI(*tm.getTargetLowering()), TSI(*tm.getSelectionDAGInfo()),
EntryNode(ISD::EntryToken, DebugLoc(), getVTList(MVT::Other)),
Root(getEntryNode()), Ordering(0) {
AllNodes.push_back(&EntryNode);
Ordering = new SDNodeOrdering();
DbgInfo = new SDDbgInfo();
}
void SelectionDAG::init(MachineFunction &mf) {
MF = &mf;
Context = &mf.getFunction()->getContext();
}
SelectionDAG::~SelectionDAG() {
allnodes_clear();
delete Ordering;
delete DbgInfo;
}
void SelectionDAG::allnodes_clear() {
assert(&*AllNodes.begin() == &EntryNode);
AllNodes.remove(AllNodes.begin());
while (!AllNodes.empty())
DeallocateNode(AllNodes.begin());
}
void SelectionDAG::clear() {
allnodes_clear();
OperandAllocator.Reset();
CSEMap.clear();
ExtendedValueTypeNodes.clear();
ExternalSymbols.clear();
TargetExternalSymbols.clear();
std::fill(CondCodeNodes.begin(), CondCodeNodes.end(),
static_cast<CondCodeSDNode*>(0));
std::fill(ValueTypeNodes.begin(), ValueTypeNodes.end(),
static_cast<SDNode*>(0));
EntryNode.UseList = 0;
AllNodes.push_back(&EntryNode);
Root = getEntryNode();
Ordering->clear();
DbgInfo->clear();
}
SDValue SelectionDAG::getSExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT) {
return VT.bitsGT(Op.getValueType()) ?
getNode(ISD::SIGN_EXTEND, DL, VT, Op) :
getNode(ISD::TRUNCATE, DL, VT, Op);
}
SDValue SelectionDAG::getZExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT) {
return VT.bitsGT(Op.getValueType()) ?
getNode(ISD::ZERO_EXTEND, DL, VT, Op) :
getNode(ISD::TRUNCATE, DL, VT, Op);
}
SDValue SelectionDAG::getZeroExtendInReg(SDValue Op, DebugLoc DL, EVT VT) {
assert(!VT.isVector() &&
"getZeroExtendInReg should use the vector element type instead of "
"the vector type!");
if (Op.getValueType() == VT) return Op;
unsigned BitWidth = Op.getValueType().getScalarType().getSizeInBits();
APInt Imm = APInt::getLowBitsSet(BitWidth,
VT.getSizeInBits());
return getNode(ISD::AND, DL, Op.getValueType(), Op,
getConstant(Imm, Op.getValueType()));
}
SDValue SelectionDAG::getNOT(DebugLoc DL, SDValue Val, EVT VT) {
EVT EltVT = VT.getScalarType();
SDValue NegOne =
getConstant(APInt::getAllOnesValue(EltVT.getSizeInBits()), VT);
return getNode(ISD::XOR, DL, VT, Val, NegOne);
}
SDValue SelectionDAG::getConstant(uint64_t Val, EVT VT, bool isT) {
EVT EltVT = VT.getScalarType();
assert((EltVT.getSizeInBits() >= 64 ||
(uint64_t)((int64_t)Val >> EltVT.getSizeInBits()) + 1 < 2) &&
"getConstant with a uint64_t value that doesn't fit in the type!");
return getConstant(APInt(EltVT.getSizeInBits(), Val), VT, isT);
}
SDValue SelectionDAG::getConstant(const APInt &Val, EVT VT, bool isT) {
return getConstant(*ConstantInt::get(*Context, Val), VT, isT);
}
SDValue SelectionDAG::getConstant(const ConstantInt &Val, EVT VT, bool isT) {
assert(VT.isInteger() && "Cannot create FP integer constant!");
EVT EltVT = VT.getScalarType();
assert(Val.getBitWidth() == EltVT.getSizeInBits() &&
"APInt size does not match type size!");
unsigned Opc = isT ? ISD::TargetConstant : ISD::Constant;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
ID.AddPointer(&Val);
void *IP = 0;
SDNode *N = NULL;
if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))
if (!VT.isVector())
return SDValue(N, 0);
if (!N) {
N = new (NodeAllocator) ConstantSDNode(isT, &Val, EltVT);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
}
SDValue Result(N, 0);
if (VT.isVector()) {
SmallVector<SDValue, 8> Ops;
Ops.assign(VT.getVectorNumElements(), Result);
Result = getNode(ISD::BUILD_VECTOR, DebugLoc(), VT, &Ops[0], Ops.size());
}
return Result;
}
SDValue SelectionDAG::getIntPtrConstant(uint64_t Val, bool isTarget) {
return getConstant(Val, TLI.getPointerTy(), isTarget);
}
SDValue SelectionDAG::getConstantFP(const APFloat& V, EVT VT, bool isTarget) {
return getConstantFP(*ConstantFP::get(*getContext(), V), VT, isTarget);
}
SDValue SelectionDAG::getConstantFP(const ConstantFP& V, EVT VT, bool isTarget){
assert(VT.isFloatingPoint() && "Cannot create integer FP constant!");
EVT EltVT = VT.getScalarType();
unsigned Opc = isTarget ? ISD::TargetConstantFP : ISD::ConstantFP;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
ID.AddPointer(&V);
void *IP = 0;
SDNode *N = NULL;
if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))
if (!VT.isVector())
return SDValue(N, 0);
if (!N) {
N = new (NodeAllocator) ConstantFPSDNode(isTarget, &V, EltVT);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
}
SDValue Result(N, 0);
if (VT.isVector()) {
SmallVector<SDValue, 8> Ops;
Ops.assign(VT.getVectorNumElements(), Result);
Result = getNode(ISD::BUILD_VECTOR, DebugLoc(), VT, &Ops[0], Ops.size());
}
return Result;
}
SDValue SelectionDAG::getConstantFP(double Val, EVT VT, bool isTarget) {
EVT EltVT = VT.getScalarType();
if (EltVT==MVT::f32)
return getConstantFP(APFloat((float)Val), VT, isTarget);
else if (EltVT==MVT::f64)
return getConstantFP(APFloat(Val), VT, isTarget);
else if (EltVT==MVT::f80 || EltVT==MVT::f128) {
bool ignored;
APFloat apf = APFloat(Val);
apf.convert(*EVTToAPFloatSemantics(EltVT), APFloat::rmNearestTiesToEven,
&ignored);
return getConstantFP(apf, VT, isTarget);
} else {
assert(0 && "Unsupported type in getConstantFP");
return SDValue();
}
}
SDValue SelectionDAG::getGlobalAddress(const GlobalValue *GV, DebugLoc DL,
EVT VT, int64_t Offset,
bool isTargetGA,
unsigned char TargetFlags) {
assert((TargetFlags == 0 || isTargetGA) &&
"Cannot set target flags on target-independent globals");
EVT PTy = TLI.getPointerTy();
unsigned BitWidth = PTy.getSizeInBits();
if (BitWidth < 64)
Offset = (Offset << (64 - BitWidth) >> (64 - BitWidth));
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
if (!GVar) {
if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
GVar = dyn_cast_or_null<GlobalVariable>(GA->resolveAliasedGlobal(false));
}
unsigned Opc;
if (GVar && GVar->isThreadLocal())
Opc = isTargetGA ? ISD::TargetGlobalTLSAddress : ISD::GlobalTLSAddress;
else
Opc = isTargetGA ? ISD::TargetGlobalAddress : ISD::GlobalAddress;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
ID.AddPointer(GV);
ID.AddInteger(Offset);
ID.AddInteger(TargetFlags);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) GlobalAddressSDNode(Opc, DL, GV, VT,
Offset, TargetFlags);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getFrameIndex(int FI, EVT VT, bool isTarget) {
unsigned Opc = isTarget ? ISD::TargetFrameIndex : ISD::FrameIndex;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
ID.AddInteger(FI);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) FrameIndexSDNode(FI, VT, isTarget);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getJumpTable(int JTI, EVT VT, bool isTarget,
unsigned char TargetFlags) {
assert((TargetFlags == 0 || isTarget) &&
"Cannot set target flags on target-independent jump tables");
unsigned Opc = isTarget ? ISD::TargetJumpTable : ISD::JumpTable;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
ID.AddInteger(JTI);
ID.AddInteger(TargetFlags);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) JumpTableSDNode(JTI, VT, isTarget,
TargetFlags);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getConstantPool(const Constant *C, EVT VT,
unsigned Alignment, int Offset,
bool isTarget,
unsigned char TargetFlags) {
assert((TargetFlags == 0 || isTarget) &&
"Cannot set target flags on target-independent globals");
if (Alignment == 0)
Alignment = TLI.getTargetData()->getPrefTypeAlignment(C->getType());
unsigned Opc = isTarget ? ISD::TargetConstantPool : ISD::ConstantPool;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
ID.AddInteger(Alignment);
ID.AddInteger(Offset);
ID.AddPointer(C);
ID.AddInteger(TargetFlags);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) ConstantPoolSDNode(isTarget, C, VT, Offset,
Alignment, TargetFlags);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getConstantPool(MachineConstantPoolValue *C, EVT VT,
unsigned Alignment, int Offset,
bool isTarget,
unsigned char TargetFlags) {
assert((TargetFlags == 0 || isTarget) &&
"Cannot set target flags on target-independent globals");
if (Alignment == 0)
Alignment = TLI.getTargetData()->getPrefTypeAlignment(C->getType());
unsigned Opc = isTarget ? ISD::TargetConstantPool : ISD::ConstantPool;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
ID.AddInteger(Alignment);
ID.AddInteger(Offset);
C->AddSelectionDAGCSEId(ID);
ID.AddInteger(TargetFlags);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) ConstantPoolSDNode(isTarget, C, VT, Offset,
Alignment, TargetFlags);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getBasicBlock(MachineBasicBlock *MBB) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::BasicBlock, getVTList(MVT::Other), 0, 0);
ID.AddPointer(MBB);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) BasicBlockSDNode(MBB);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getValueType(EVT VT) {
if (VT.isSimple() && (unsigned)VT.getSimpleVT().SimpleTy >=
ValueTypeNodes.size())
ValueTypeNodes.resize(VT.getSimpleVT().SimpleTy+1);
SDNode *&N = VT.isExtended() ?
ExtendedValueTypeNodes[VT] : ValueTypeNodes[VT.getSimpleVT().SimpleTy];
if (N) return SDValue(N, 0);
N = new (NodeAllocator) VTSDNode(VT);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getExternalSymbol(const char *Sym, EVT VT) {
SDNode *&N = ExternalSymbols[Sym];
if (N) return SDValue(N, 0);
N = new (NodeAllocator) ExternalSymbolSDNode(false, Sym, 0, VT);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getTargetExternalSymbol(const char *Sym, EVT VT,
unsigned char TargetFlags) {
SDNode *&N =
TargetExternalSymbols[std::pair<std::string,unsigned char>(Sym,
TargetFlags)];
if (N) return SDValue(N, 0);
N = new (NodeAllocator) ExternalSymbolSDNode(true, Sym, TargetFlags, VT);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getCondCode(ISD::CondCode Cond) {
if ((unsigned)Cond >= CondCodeNodes.size())
CondCodeNodes.resize(Cond+1);
if (CondCodeNodes[Cond] == 0) {
CondCodeSDNode *N = new (NodeAllocator) CondCodeSDNode(Cond);
CondCodeNodes[Cond] = N;
AllNodes.push_back(N);
}
return SDValue(CondCodeNodes[Cond], 0);
}
static void commuteShuffle(SDValue &N1, SDValue &N2, SmallVectorImpl<int> &M) {
std::swap(N1, N2);
int NElts = M.size();
for (int i = 0; i != NElts; ++i) {
if (M[i] >= NElts)
M[i] -= NElts;
else if (M[i] >= 0)
M[i] += NElts;
}
}
SDValue SelectionDAG::getVectorShuffle(EVT VT, DebugLoc dl, SDValue N1,
SDValue N2, const int *Mask) {
assert(N1.getValueType() == N2.getValueType() && "Invalid VECTOR_SHUFFLE");
assert(VT.isVector() && N1.getValueType().isVector() &&
"Vector Shuffle VTs must be a vectors");
assert(VT.getVectorElementType() == N1.getValueType().getVectorElementType()
&& "Vector Shuffle VTs must have same element type");
if (N1.getOpcode() == ISD::UNDEF && N2.getOpcode() == ISD::UNDEF)
return getUNDEF(VT);
unsigned NElts = VT.getVectorNumElements();
SmallVector<int, 8> MaskVec;
for (unsigned i = 0; i != NElts; ++i) {
assert(Mask[i] < (int)(NElts * 2) && "Index out of range");
MaskVec.push_back(Mask[i]);
}
if (N1 == N2) {
N2 = getUNDEF(VT);
for (unsigned i = 0; i != NElts; ++i)
if (MaskVec[i] >= (int)NElts) MaskVec[i] -= NElts;
}
if (N1.getOpcode() == ISD::UNDEF)
commuteShuffle(N1, N2, MaskVec);
bool AllLHS = true, AllRHS = true;
bool N2Undef = N2.getOpcode() == ISD::UNDEF;
for (unsigned i = 0; i != NElts; ++i) {
if (MaskVec[i] >= (int)NElts) {
if (N2Undef)
MaskVec[i] = -1;
else
AllLHS = false;
} else if (MaskVec[i] >= 0) {
AllRHS = false;
}
}
if (AllLHS && AllRHS)
return getUNDEF(VT);
if (AllLHS && !N2Undef)
N2 = getUNDEF(VT);
if (AllRHS) {
N1 = getUNDEF(VT);
commuteShuffle(N1, N2, MaskVec);
}
bool AllUndef = true;
bool Identity = true;
for (unsigned i = 0; i != NElts; ++i) {
if (MaskVec[i] >= 0 && MaskVec[i] != (int)i) Identity = false;
if (MaskVec[i] >= 0) AllUndef = false;
}
if (Identity && NElts == N1.getValueType().getVectorNumElements())
return N1;
if (AllUndef)
return getUNDEF(VT);
FoldingSetNodeID ID;
SDValue Ops[2] = { N1, N2 };
AddNodeIDNode(ID, ISD::VECTOR_SHUFFLE, getVTList(VT), Ops, 2);
for (unsigned i = 0; i != NElts; ++i)
ID.AddInteger(MaskVec[i]);
void* IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
int *MaskAlloc = OperandAllocator.Allocate<int>(NElts);
memcpy(MaskAlloc, &MaskVec[0], NElts * sizeof(int));
ShuffleVectorSDNode *N =
new (NodeAllocator) ShuffleVectorSDNode(VT, dl, N1, N2, MaskAlloc);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getConvertRndSat(EVT VT, DebugLoc dl,
SDValue Val, SDValue DTy,
SDValue STy, SDValue Rnd, SDValue Sat,
ISD::CvtCode Code) {
if (DTy == STy &&
(Code == ISD::CVT_UU || Code == ISD::CVT_SS || Code == ISD::CVT_FF))
return Val;
FoldingSetNodeID ID;
SDValue Ops[] = { Val, DTy, STy, Rnd, Sat };
AddNodeIDNode(ID, ISD::CONVERT_RNDSAT, getVTList(VT), &Ops[0], 5);
void* IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
CvtRndSatSDNode *N = new (NodeAllocator) CvtRndSatSDNode(VT, dl, Ops, 5,
Code);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getRegister(unsigned RegNo, EVT VT) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::Register, getVTList(VT), 0, 0);
ID.AddInteger(RegNo);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) RegisterSDNode(RegNo, VT);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getEHLabel(DebugLoc dl, SDValue Root, MCSymbol *Label) {
FoldingSetNodeID ID;
SDValue Ops[] = { Root };
AddNodeIDNode(ID, ISD::EH_LABEL, getVTList(MVT::Other), &Ops[0], 1);
ID.AddPointer(Label);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) EHLabelSDNode(dl, Root, Label);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getBlockAddress(const BlockAddress *BA, EVT VT,
bool isTarget,
unsigned char TargetFlags) {
unsigned Opc = isTarget ? ISD::TargetBlockAddress : ISD::BlockAddress;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
ID.AddPointer(BA);
ID.AddInteger(TargetFlags);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) BlockAddressSDNode(Opc, VT, BA, TargetFlags);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getSrcValue(const Value *V) {
assert((!V || V->getType()->isPointerTy()) &&
"SrcValue is not a pointer?");
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::SRCVALUE, getVTList(MVT::Other), 0, 0);
ID.AddPointer(V);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) SrcValueSDNode(V);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getMDNode(const MDNode *MD) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::MDNODE_SDNODE, getVTList(MVT::Other), 0, 0);
ID.AddPointer(MD);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) MDNodeSDNode(MD);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getShiftAmountOperand(EVT LHSTy, SDValue Op) {
EVT OpTy = Op.getValueType();
MVT ShTy = TLI.getShiftAmountTy(LHSTy);
if (OpTy == ShTy || OpTy.isVector()) return Op;
ISD::NodeType Opcode = OpTy.bitsGT(ShTy) ? ISD::TRUNCATE : ISD::ZERO_EXTEND;
return getNode(Opcode, Op.getDebugLoc(), ShTy, Op);
}
SDValue SelectionDAG::CreateStackTemporary(EVT VT, unsigned minAlign) {
MachineFrameInfo *FrameInfo = getMachineFunction().getFrameInfo();
unsigned ByteSize = VT.getStoreSize();
const Type *Ty = VT.getTypeForEVT(*getContext());
unsigned StackAlign =
std::max((unsigned)TLI.getTargetData()->getPrefTypeAlignment(Ty), minAlign);
int FrameIdx = FrameInfo->CreateStackObject(ByteSize, StackAlign, false);
return getFrameIndex(FrameIdx, TLI.getPointerTy());
}
SDValue SelectionDAG::CreateStackTemporary(EVT VT1, EVT VT2) {
unsigned Bytes = std::max(VT1.getStoreSizeInBits(),
VT2.getStoreSizeInBits())/8;
const Type *Ty1 = VT1.getTypeForEVT(*getContext());
const Type *Ty2 = VT2.getTypeForEVT(*getContext());
const TargetData *TD = TLI.getTargetData();
unsigned Align = std::max(TD->getPrefTypeAlignment(Ty1),
TD->getPrefTypeAlignment(Ty2));
MachineFrameInfo *FrameInfo = getMachineFunction().getFrameInfo();
int FrameIdx = FrameInfo->CreateStackObject(Bytes, Align, false);
return getFrameIndex(FrameIdx, TLI.getPointerTy());
}
SDValue SelectionDAG::FoldSetCC(EVT VT, SDValue N1,
SDValue N2, ISD::CondCode Cond, DebugLoc dl) {
switch (Cond) {
default: break;
case ISD::SETFALSE:
case ISD::SETFALSE2: return getConstant(0, VT);
case ISD::SETTRUE:
case ISD::SETTRUE2: return getConstant(1, VT);
case ISD::SETOEQ:
case ISD::SETOGT:
case ISD::SETOGE:
case ISD::SETOLT:
case ISD::SETOLE:
case ISD::SETONE:
case ISD::SETO:
case ISD::SETUO:
case ISD::SETUEQ:
case ISD::SETUNE:
assert(!N1.getValueType().isInteger() && "Illegal setcc for integer!");
break;
}
if (ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.getNode())) {
const APInt &C2 = N2C->getAPIntValue();
if (ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.getNode())) {
const APInt &C1 = N1C->getAPIntValue();
switch (Cond) {
default: llvm_unreachable("Unknown integer setcc!");
case ISD::SETEQ: return getConstant(C1 == C2, VT);
case ISD::SETNE: return getConstant(C1 != C2, VT);
case ISD::SETULT: return getConstant(C1.ult(C2), VT);
case ISD::SETUGT: return getConstant(C1.ugt(C2), VT);
case ISD::SETULE: return getConstant(C1.ule(C2), VT);
case ISD::SETUGE: return getConstant(C1.uge(C2), VT);
case ISD::SETLT: return getConstant(C1.slt(C2), VT);
case ISD::SETGT: return getConstant(C1.sgt(C2), VT);
case ISD::SETLE: return getConstant(C1.sle(C2), VT);
case ISD::SETGE: return getConstant(C1.sge(C2), VT);
}
}
}
if (ConstantFPSDNode *N1C = dyn_cast<ConstantFPSDNode>(N1.getNode())) {
if (ConstantFPSDNode *N2C = dyn_cast<ConstantFPSDNode>(N2.getNode())) {
if (N1C->getValueType(0) == MVT::ppcf128)
return SDValue();
APFloat::cmpResult R = N1C->getValueAPF().compare(N2C->getValueAPF());
switch (Cond) {
default: break;
case ISD::SETEQ: if (R==APFloat::cmpUnordered)
return getUNDEF(VT);
case ISD::SETOEQ: return getConstant(R==APFloat::cmpEqual, VT);
case ISD::SETNE: if (R==APFloat::cmpUnordered)
return getUNDEF(VT);
case ISD::SETONE: return getConstant(R==APFloat::cmpGreaterThan ||
R==APFloat::cmpLessThan, VT);
case ISD::SETLT: if (R==APFloat::cmpUnordered)
return getUNDEF(VT);
case ISD::SETOLT: return getConstant(R==APFloat::cmpLessThan, VT);
case ISD::SETGT: if (R==APFloat::cmpUnordered)
return getUNDEF(VT);
case ISD::SETOGT: return getConstant(R==APFloat::cmpGreaterThan, VT);
case ISD::SETLE: if (R==APFloat::cmpUnordered)
return getUNDEF(VT);
case ISD::SETOLE: return getConstant(R==APFloat::cmpLessThan ||
R==APFloat::cmpEqual, VT);
case ISD::SETGE: if (R==APFloat::cmpUnordered)
return getUNDEF(VT);
case ISD::SETOGE: return getConstant(R==APFloat::cmpGreaterThan ||
R==APFloat::cmpEqual, VT);
case ISD::SETO: return getConstant(R!=APFloat::cmpUnordered, VT);
case ISD::SETUO: return getConstant(R==APFloat::cmpUnordered, VT);
case ISD::SETUEQ: return getConstant(R==APFloat::cmpUnordered ||
R==APFloat::cmpEqual, VT);
case ISD::SETUNE: return getConstant(R!=APFloat::cmpEqual, VT);
case ISD::SETULT: return getConstant(R==APFloat::cmpUnordered ||
R==APFloat::cmpLessThan, VT);
case ISD::SETUGT: return getConstant(R==APFloat::cmpGreaterThan ||
R==APFloat::cmpUnordered, VT);
case ISD::SETULE: return getConstant(R!=APFloat::cmpGreaterThan, VT);
case ISD::SETUGE: return getConstant(R!=APFloat::cmpLessThan, VT);
}
} else {
return getSetCC(dl, VT, N2, N1, ISD::getSetCCSwappedOperands(Cond));
}
}
return SDValue();
}
bool SelectionDAG::SignBitIsZero(SDValue Op, unsigned Depth) const {
if (Op.getValueType().isVector())
return false;
unsigned BitWidth = Op.getValueType().getScalarType().getSizeInBits();
return MaskedValueIsZero(Op, APInt::getSignBit(BitWidth), Depth);
}
bool SelectionDAG::MaskedValueIsZero(SDValue Op, const APInt &Mask,
unsigned Depth) const {
APInt KnownZero, KnownOne;
ComputeMaskedBits(Op, Mask, KnownZero, KnownOne, Depth);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
return (KnownZero & Mask) == Mask;
}
void SelectionDAG::ComputeMaskedBits(SDValue Op, const APInt &Mask,
APInt &KnownZero, APInt &KnownOne,
unsigned Depth) const {
unsigned BitWidth = Mask.getBitWidth();
assert(BitWidth == Op.getValueType().getScalarType().getSizeInBits() &&
"Mask size mismatches value type size!");
KnownZero = KnownOne = APInt(BitWidth, 0); if (Depth == 6 || Mask == 0)
return;
APInt KnownZero2, KnownOne2;
switch (Op.getOpcode()) {
case ISD::Constant:
KnownOne = cast<ConstantSDNode>(Op)->getAPIntValue() & Mask;
KnownZero = ~KnownOne & Mask;
return;
case ISD::AND:
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
ComputeMaskedBits(Op.getOperand(0), Mask & ~KnownZero,
KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
KnownOne &= KnownOne2;
KnownZero |= KnownZero2;
return;
case ISD::OR:
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
ComputeMaskedBits(Op.getOperand(0), Mask & ~KnownOne,
KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
KnownZero &= KnownZero2;
KnownOne |= KnownOne2;
return;
case ISD::XOR: {
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
APInt KnownZeroOut = (KnownZero & KnownZero2) | (KnownOne & KnownOne2);
KnownOne = (KnownZero & KnownOne2) | (KnownOne & KnownZero2);
KnownZero = KnownZeroOut;
return;
}
case ISD::MUL: {
APInt Mask2 = APInt::getAllOnesValue(BitWidth);
ComputeMaskedBits(Op.getOperand(1), Mask2, KnownZero, KnownOne, Depth+1);
ComputeMaskedBits(Op.getOperand(0), Mask2, KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
KnownOne.clearAllBits();
unsigned TrailZ = KnownZero.countTrailingOnes() +
KnownZero2.countTrailingOnes();
unsigned LeadZ = std::max(KnownZero.countLeadingOnes() +
KnownZero2.countLeadingOnes(),
BitWidth) - BitWidth;
TrailZ = std::min(TrailZ, BitWidth);
LeadZ = std::min(LeadZ, BitWidth);
KnownZero = APInt::getLowBitsSet(BitWidth, TrailZ) |
APInt::getHighBitsSet(BitWidth, LeadZ);
KnownZero &= Mask;
return;
}
case ISD::UDIV: {
APInt AllOnes = APInt::getAllOnesValue(BitWidth);
ComputeMaskedBits(Op.getOperand(0),
AllOnes, KnownZero2, KnownOne2, Depth+1);
unsigned LeadZ = KnownZero2.countLeadingOnes();
KnownOne2.clearAllBits();
KnownZero2.clearAllBits();
ComputeMaskedBits(Op.getOperand(1),
AllOnes, KnownZero2, KnownOne2, Depth+1);
unsigned RHSUnknownLeadingOnes = KnownOne2.countLeadingZeros();
if (RHSUnknownLeadingOnes != BitWidth)
LeadZ = std::min(BitWidth,
LeadZ + BitWidth - RHSUnknownLeadingOnes - 1);
KnownZero = APInt::getHighBitsSet(BitWidth, LeadZ) & Mask;
return;
}
case ISD::SELECT:
ComputeMaskedBits(Op.getOperand(2), Mask, KnownZero, KnownOne, Depth+1);
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
KnownOne &= KnownOne2;
KnownZero &= KnownZero2;
return;
case ISD::SELECT_CC:
ComputeMaskedBits(Op.getOperand(3), Mask, KnownZero, KnownOne, Depth+1);
ComputeMaskedBits(Op.getOperand(2), Mask, KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
KnownOne &= KnownOne2;
KnownZero &= KnownZero2;
return;
case ISD::SADDO:
case ISD::UADDO:
case ISD::SSUBO:
case ISD::USUBO:
case ISD::SMULO:
case ISD::UMULO:
if (Op.getResNo() != 1)
return;
case ISD::SETCC:
if (TLI.getBooleanContents() == TargetLowering::ZeroOrOneBooleanContent &&
BitWidth > 1)
KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - 1);
return;
case ISD::SHL:
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
unsigned ShAmt = SA->getZExtValue();
if (ShAmt >= BitWidth)
return;
ComputeMaskedBits(Op.getOperand(0), Mask.lshr(ShAmt),
KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
KnownZero <<= ShAmt;
KnownOne <<= ShAmt;
KnownZero |= APInt::getLowBitsSet(BitWidth, ShAmt);
}
return;
case ISD::SRL:
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
unsigned ShAmt = SA->getZExtValue();
if (ShAmt >= BitWidth)
return;
ComputeMaskedBits(Op.getOperand(0), (Mask << ShAmt),
KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
KnownZero = KnownZero.lshr(ShAmt);
KnownOne = KnownOne.lshr(ShAmt);
APInt HighBits = APInt::getHighBitsSet(BitWidth, ShAmt) & Mask;
KnownZero |= HighBits; }
return;
case ISD::SRA:
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
unsigned ShAmt = SA->getZExtValue();
if (ShAmt >= BitWidth)
return;
APInt InDemandedMask = (Mask << ShAmt);
APInt HighBits = APInt::getHighBitsSet(BitWidth, ShAmt) & Mask;
if (HighBits.getBoolValue())
InDemandedMask |= APInt::getSignBit(BitWidth);
ComputeMaskedBits(Op.getOperand(0), InDemandedMask, KnownZero, KnownOne,
Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
KnownZero = KnownZero.lshr(ShAmt);
KnownOne = KnownOne.lshr(ShAmt);
APInt SignBit = APInt::getSignBit(BitWidth);
SignBit = SignBit.lshr(ShAmt);
if (KnownZero.intersects(SignBit)) {
KnownZero |= HighBits; } else if (KnownOne.intersects(SignBit)) {
KnownOne |= HighBits; }
}
return;
case ISD::SIGN_EXTEND_INREG: {
EVT EVT = cast<VTSDNode>(Op.getOperand(1))->getVT();
unsigned EBits = EVT.getScalarType().getSizeInBits();
APInt NewBits = APInt::getHighBitsSet(BitWidth, BitWidth - EBits) & Mask;
APInt InSignBit = APInt::getSignBit(EBits);
APInt InputDemandedBits = Mask & APInt::getLowBitsSet(BitWidth, EBits);
InSignBit = InSignBit.zext(BitWidth);
if (NewBits.getBoolValue())
InputDemandedBits |= InSignBit;
ComputeMaskedBits(Op.getOperand(0), InputDemandedBits,
KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
if (KnownZero.intersects(InSignBit)) { KnownZero |= NewBits;
KnownOne &= ~NewBits;
} else if (KnownOne.intersects(InSignBit)) { KnownOne |= NewBits;
KnownZero &= ~NewBits;
} else { KnownZero &= ~NewBits;
KnownOne &= ~NewBits;
}
return;
}
case ISD::CTTZ:
case ISD::CTLZ:
case ISD::CTPOP: {
unsigned LowBits = Log2_32(BitWidth)+1;
KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - LowBits);
KnownOne.clearAllBits();
return;
}
case ISD::LOAD: {
if (ISD::isZEXTLoad(Op.getNode())) {
LoadSDNode *LD = cast<LoadSDNode>(Op);
EVT VT = LD->getMemoryVT();
unsigned MemBits = VT.getScalarType().getSizeInBits();
KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - MemBits) & Mask;
}
return;
}
case ISD::ZERO_EXTEND: {
EVT InVT = Op.getOperand(0).getValueType();
unsigned InBits = InVT.getScalarType().getSizeInBits();
APInt NewBits = APInt::getHighBitsSet(BitWidth, BitWidth - InBits) & Mask;
APInt InMask = Mask.trunc(InBits);
KnownZero = KnownZero.trunc(InBits);
KnownOne = KnownOne.trunc(InBits);
ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
KnownZero = KnownZero.zext(BitWidth);
KnownOne = KnownOne.zext(BitWidth);
KnownZero |= NewBits;
return;
}
case ISD::SIGN_EXTEND: {
EVT InVT = Op.getOperand(0).getValueType();
unsigned InBits = InVT.getScalarType().getSizeInBits();
APInt InSignBit = APInt::getSignBit(InBits);
APInt NewBits = APInt::getHighBitsSet(BitWidth, BitWidth - InBits) & Mask;
APInt InMask = Mask.trunc(InBits);
if (NewBits.getBoolValue())
InMask |= InSignBit;
KnownZero = KnownZero.trunc(InBits);
KnownOne = KnownOne.trunc(InBits);
ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
bool SignBitKnownZero = KnownZero.isNegative();
bool SignBitKnownOne = KnownOne.isNegative();
assert(!(SignBitKnownZero && SignBitKnownOne) &&
"Sign bit can't be known to be both zero and one!");
InMask = Mask.trunc(InBits);
KnownZero &= InMask;
KnownOne &= InMask;
KnownZero = KnownZero.zext(BitWidth);
KnownOne = KnownOne.zext(BitWidth);
if (SignBitKnownZero)
KnownZero |= NewBits;
else if (SignBitKnownOne)
KnownOne |= NewBits;
return;
}
case ISD::ANY_EXTEND: {
EVT InVT = Op.getOperand(0).getValueType();
unsigned InBits = InVT.getScalarType().getSizeInBits();
APInt InMask = Mask.trunc(InBits);
KnownZero = KnownZero.trunc(InBits);
KnownOne = KnownOne.trunc(InBits);
ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
KnownZero = KnownZero.zext(BitWidth);
KnownOne = KnownOne.zext(BitWidth);
return;
}
case ISD::TRUNCATE: {
EVT InVT = Op.getOperand(0).getValueType();
unsigned InBits = InVT.getScalarType().getSizeInBits();
APInt InMask = Mask.zext(InBits);
KnownZero = KnownZero.zext(InBits);
KnownOne = KnownOne.zext(InBits);
ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
KnownZero = KnownZero.trunc(BitWidth);
KnownOne = KnownOne.trunc(BitWidth);
break;
}
case ISD::AssertZext: {
EVT VT = cast<VTSDNode>(Op.getOperand(1))->getVT();
APInt InMask = APInt::getLowBitsSet(BitWidth, VT.getSizeInBits());
ComputeMaskedBits(Op.getOperand(0), Mask & InMask, KnownZero,
KnownOne, Depth+1);
KnownZero |= (~InMask) & Mask;
return;
}
case ISD::FGETSIGN:
KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - 1);
return;
case ISD::SUB: {
if (ConstantSDNode *CLHS = dyn_cast<ConstantSDNode>(Op.getOperand(0))) {
if (CLHS->getAPIntValue().isNonNegative()) {
unsigned NLZ = (CLHS->getAPIntValue()+1).countLeadingZeros();
APInt MaskV = APInt::getHighBitsSet(BitWidth, NLZ+1);
ComputeMaskedBits(Op.getOperand(1), MaskV, KnownZero2, KnownOne2,
Depth+1);
if ((KnownZero2 & MaskV) == MaskV) {
unsigned NLZ2 = CLHS->getAPIntValue().countLeadingZeros();
KnownZero = APInt::getHighBitsSet(BitWidth, NLZ2) & Mask;
}
}
}
}
case ISD::ADD:
case ISD::ADDE: {
APInt Mask2 = APInt::getLowBitsSet(BitWidth,
BitWidth - Mask.countLeadingZeros());
ComputeMaskedBits(Op.getOperand(0), Mask2, KnownZero2, KnownOne2, Depth+1);
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
unsigned KnownZeroOut = KnownZero2.countTrailingOnes();
ComputeMaskedBits(Op.getOperand(1), Mask2, KnownZero2, KnownOne2, Depth+1);
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
KnownZeroOut = std::min(KnownZeroOut,
KnownZero2.countTrailingOnes());
if (Op.getOpcode() == ISD::ADD) {
KnownZero |= APInt::getLowBitsSet(BitWidth, KnownZeroOut);
return;
}
if (KnownZeroOut >= 2) KnownZero |= APInt::getBitsSet(BitWidth, 1, KnownZeroOut);
return;
}
case ISD::SREM:
if (ConstantSDNode *Rem = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
const APInt &RA = Rem->getAPIntValue().abs();
if (RA.isPowerOf2()) {
APInt LowBits = RA - 1;
APInt Mask2 = LowBits | APInt::getSignBit(BitWidth);
ComputeMaskedBits(Op.getOperand(0), Mask2,KnownZero2,KnownOne2,Depth+1);
KnownZero = KnownZero2 & LowBits;
KnownOne = KnownOne2 & LowBits;
if (KnownZero2[BitWidth-1] || ((KnownZero2 & LowBits) == LowBits))
KnownZero |= ~LowBits;
if (KnownOne2[BitWidth-1] && ((KnownOne2 & LowBits) != 0))
KnownOne |= ~LowBits;
KnownZero &= Mask;
KnownOne &= Mask;
assert((KnownZero & KnownOne) == 0&&"Bits known to be one AND zero?");
}
}
return;
case ISD::UREM: {
if (ConstantSDNode *Rem = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
const APInt &RA = Rem->getAPIntValue();
if (RA.isPowerOf2()) {
APInt LowBits = (RA - 1);
APInt Mask2 = LowBits & Mask;
KnownZero |= ~LowBits & Mask;
ComputeMaskedBits(Op.getOperand(0), Mask2, KnownZero, KnownOne,Depth+1);
assert((KnownZero & KnownOne) == 0&&"Bits known to be one AND zero?");
break;
}
}
APInt AllOnes = APInt::getAllOnesValue(BitWidth);
ComputeMaskedBits(Op.getOperand(0), AllOnes, KnownZero, KnownOne,
Depth+1);
ComputeMaskedBits(Op.getOperand(1), AllOnes, KnownZero2, KnownOne2,
Depth+1);
uint32_t Leaders = std::max(KnownZero.countLeadingOnes(),
KnownZero2.countLeadingOnes());
KnownOne.clearAllBits();
KnownZero = APInt::getHighBitsSet(BitWidth, Leaders) & Mask;
return;
}
case ISD::FrameIndex:
case ISD::TargetFrameIndex:
if (unsigned Align = InferPtrAlignment(Op)) {
KnownZero = APInt::getLowBitsSet(BitWidth, Log2_32(Align));
return;
}
break;
default:
if (Op.getOpcode() >= ISD::BUILTIN_OP_END) {
case ISD::INTRINSIC_WO_CHAIN:
case ISD::INTRINSIC_W_CHAIN:
case ISD::INTRINSIC_VOID:
TLI.computeMaskedBitsForTargetNode(Op, Mask, KnownZero, KnownOne, *this,
Depth);
}
return;
}
}
unsigned SelectionDAG::ComputeNumSignBits(SDValue Op, unsigned Depth) const{
EVT VT = Op.getValueType();
assert(VT.isInteger() && "Invalid VT!");
unsigned VTBits = VT.getScalarType().getSizeInBits();
unsigned Tmp, Tmp2;
unsigned FirstAnswer = 1;
if (Depth == 6)
return 1;
switch (Op.getOpcode()) {
default: break;
case ISD::AssertSext:
Tmp = cast<VTSDNode>(Op.getOperand(1))->getVT().getSizeInBits();
return VTBits-Tmp+1;
case ISD::AssertZext:
Tmp = cast<VTSDNode>(Op.getOperand(1))->getVT().getSizeInBits();
return VTBits-Tmp;
case ISD::Constant: {
const APInt &Val = cast<ConstantSDNode>(Op)->getAPIntValue();
return Val.getNumSignBits();
}
case ISD::SIGN_EXTEND:
Tmp = VTBits-Op.getOperand(0).getValueType().getScalarType().getSizeInBits();
return ComputeNumSignBits(Op.getOperand(0), Depth+1) + Tmp;
case ISD::SIGN_EXTEND_INREG:
Tmp =
cast<VTSDNode>(Op.getOperand(1))->getVT().getScalarType().getSizeInBits();
Tmp = VTBits-Tmp+1;
Tmp2 = ComputeNumSignBits(Op.getOperand(0), Depth+1);
return std::max(Tmp, Tmp2);
case ISD::SRA:
Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
Tmp += C->getZExtValue();
if (Tmp > VTBits) Tmp = VTBits;
}
return Tmp;
case ISD::SHL:
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
if (C->getZExtValue() >= VTBits || C->getZExtValue() >= Tmp) break; return Tmp - C->getZExtValue();
}
break;
case ISD::AND:
case ISD::OR:
case ISD::XOR: Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
if (Tmp != 1) {
Tmp2 = ComputeNumSignBits(Op.getOperand(1), Depth+1);
FirstAnswer = std::min(Tmp, Tmp2);
}
break;
case ISD::SELECT:
Tmp = ComputeNumSignBits(Op.getOperand(1), Depth+1);
if (Tmp == 1) return 1; Tmp2 = ComputeNumSignBits(Op.getOperand(2), Depth+1);
return std::min(Tmp, Tmp2);
case ISD::SADDO:
case ISD::UADDO:
case ISD::SSUBO:
case ISD::USUBO:
case ISD::SMULO:
case ISD::UMULO:
if (Op.getResNo() != 1)
break;
case ISD::SETCC:
if (TLI.getBooleanContents() ==
TargetLowering::ZeroOrNegativeOneBooleanContent)
return VTBits;
break;
case ISD::ROTL:
case ISD::ROTR:
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
unsigned RotAmt = C->getZExtValue() & (VTBits-1);
if (Op.getOpcode() == ISD::ROTR)
RotAmt = (VTBits-RotAmt) & (VTBits-1);
Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
if (Tmp > RotAmt+1) return Tmp-RotAmt;
}
break;
case ISD::ADD:
Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
if (Tmp == 1) return 1;
if (ConstantSDNode *CRHS = dyn_cast<ConstantSDNode>(Op.getOperand(1)))
if (CRHS->isAllOnesValue()) {
APInt KnownZero, KnownOne;
APInt Mask = APInt::getAllOnesValue(VTBits);
ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero, KnownOne, Depth+1);
if ((KnownZero | APInt(VTBits, 1)) == Mask)
return VTBits;
if (KnownZero.isNegative())
return Tmp;
}
Tmp2 = ComputeNumSignBits(Op.getOperand(1), Depth+1);
if (Tmp2 == 1) return 1;
return std::min(Tmp, Tmp2)-1;
break;
case ISD::SUB:
Tmp2 = ComputeNumSignBits(Op.getOperand(1), Depth+1);
if (Tmp2 == 1) return 1;
if (ConstantSDNode *CLHS = dyn_cast<ConstantSDNode>(Op.getOperand(0)))
if (CLHS->isNullValue()) {
APInt KnownZero, KnownOne;
APInt Mask = APInt::getAllOnesValue(VTBits);
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
if ((KnownZero | APInt(VTBits, 1)) == Mask)
return VTBits;
if (KnownZero.isNegative())
return Tmp2;
}
Tmp = ComputeNumSignBits(Op.getOperand(0), Depth+1);
if (Tmp == 1) return 1; return std::min(Tmp, Tmp2)-1;
break;
case ISD::TRUNCATE:
break;
}
if (Op.getOpcode() == ISD::LOAD) {
LoadSDNode *LD = cast<LoadSDNode>(Op);
unsigned ExtType = LD->getExtensionType();
switch (ExtType) {
default: break;
case ISD::SEXTLOAD: Tmp = LD->getMemoryVT().getScalarType().getSizeInBits();
return VTBits-Tmp+1;
case ISD::ZEXTLOAD: Tmp = LD->getMemoryVT().getScalarType().getSizeInBits();
return VTBits-Tmp;
}
}
if (Op.getOpcode() >= ISD::BUILTIN_OP_END ||
Op.getOpcode() == ISD::INTRINSIC_WO_CHAIN ||
Op.getOpcode() == ISD::INTRINSIC_W_CHAIN ||
Op.getOpcode() == ISD::INTRINSIC_VOID) {
unsigned NumBits = TLI.ComputeNumSignBitsForTargetNode(Op, Depth);
if (NumBits > 1) FirstAnswer = std::max(FirstAnswer, NumBits);
}
APInt KnownZero, KnownOne;
APInt Mask = APInt::getAllOnesValue(VTBits);
ComputeMaskedBits(Op, Mask, KnownZero, KnownOne, Depth);
if (KnownZero.isNegative()) { Mask = KnownZero;
} else if (KnownOne.isNegative()) { Mask = KnownOne;
} else {
return FirstAnswer;
}
Mask = ~Mask;
Mask <<= Mask.getBitWidth()-VTBits;
return std::max(FirstAnswer, std::min(VTBits, Mask.countLeadingZeros()));
}
bool SelectionDAG::isBaseWithConstantOffset(SDValue Op) const {
if ((Op.getOpcode() != ISD::ADD && Op.getOpcode() != ISD::OR) ||
!isa<ConstantSDNode>(Op.getOperand(1)))
return false;
if (Op.getOpcode() == ISD::OR &&
!MaskedValueIsZero(Op.getOperand(0),
cast<ConstantSDNode>(Op.getOperand(1))->getAPIntValue()))
return false;
return true;
}
bool SelectionDAG::isKnownNeverNaN(SDValue Op) const {
if (NoNaNsFPMath)
return true;
if (const ConstantFPSDNode *C = dyn_cast<ConstantFPSDNode>(Op))
return !C->getValueAPF().isNaN();
return false;
}
bool SelectionDAG::isKnownNeverZero(SDValue Op) const {
if (const ConstantFPSDNode *C = dyn_cast<ConstantFPSDNode>(Op))
return !C->isZero();
return false;
}
bool SelectionDAG::isEqualTo(SDValue A, SDValue B) const {
if (A == B) return true;
if (const ConstantFPSDNode *CA = dyn_cast<ConstantFPSDNode>(A))
if (const ConstantFPSDNode *CB = dyn_cast<ConstantFPSDNode>(B))
if (CA->isZero() && CB->isZero()) return true;
return false;
}
bool SelectionDAG::isVerifiedDebugInfoDesc(SDValue Op) const {
GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op);
if (!GA) return false;
if (GA->getOffset() != 0) return false;
const GlobalVariable *GV = dyn_cast<GlobalVariable>(GA->getGlobal());
if (!GV) return false;
return MF->getMMI().hasDebugInfo();
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, getVTList(VT), 0, 0);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) SDNode(Opcode, DL, getVTList(VT));
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
#ifndef NDEBUG
VerifySDNode(N);
#endif
return SDValue(N, 0);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
EVT VT, SDValue Operand) {
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Operand.getNode())) {
const APInt &Val = C->getAPIntValue();
switch (Opcode) {
default: break;
case ISD::SIGN_EXTEND:
return getConstant(Val.sextOrTrunc(VT.getSizeInBits()), VT);
case ISD::ANY_EXTEND:
case ISD::ZERO_EXTEND:
case ISD::TRUNCATE:
return getConstant(Val.zextOrTrunc(VT.getSizeInBits()), VT);
case ISD::UINT_TO_FP:
case ISD::SINT_TO_FP: {
if (VT == MVT::ppcf128) break;
APFloat apf(APInt::getNullValue(VT.getSizeInBits()));
(void)apf.convertFromAPInt(Val,
Opcode==ISD::SINT_TO_FP,
APFloat::rmNearestTiesToEven);
return getConstantFP(apf, VT);
}
case ISD::BITCAST:
if (VT == MVT::f32 && C->getValueType(0) == MVT::i32)
return getConstantFP(Val.bitsToFloat(), VT);
else if (VT == MVT::f64 && C->getValueType(0) == MVT::i64)
return getConstantFP(Val.bitsToDouble(), VT);
break;
case ISD::BSWAP:
return getConstant(Val.byteSwap(), VT);
case ISD::CTPOP:
return getConstant(Val.countPopulation(), VT);
case ISD::CTLZ:
return getConstant(Val.countLeadingZeros(), VT);
case ISD::CTTZ:
return getConstant(Val.countTrailingZeros(), VT);
}
}
if (ConstantFPSDNode *C = dyn_cast<ConstantFPSDNode>(Operand.getNode())) {
APFloat V = C->getValueAPF(); if (VT != MVT::ppcf128 && Operand.getValueType() != MVT::ppcf128) {
switch (Opcode) {
case ISD::FNEG:
V.changeSign();
return getConstantFP(V, VT);
case ISD::FABS:
V.clearSign();
return getConstantFP(V, VT);
case ISD::FP_ROUND:
case ISD::FP_EXTEND: {
bool ignored;
(void)V.convert(*EVTToAPFloatSemantics(VT),
APFloat::rmNearestTiesToEven, &ignored);
return getConstantFP(V, VT);
}
case ISD::FP_TO_SINT:
case ISD::FP_TO_UINT: {
integerPart x[2];
bool ignored;
assert(integerPartWidth >= 64);
APFloat::opStatus s = V.convertToInteger(x, VT.getSizeInBits(),
Opcode==ISD::FP_TO_SINT,
APFloat::rmTowardZero, &ignored);
if (s==APFloat::opInvalidOp) break;
APInt api(VT.getSizeInBits(), 2, x);
return getConstant(api, VT);
}
case ISD::BITCAST:
if (VT == MVT::i32 && C->getValueType(0) == MVT::f32)
return getConstant((uint32_t)V.bitcastToAPInt().getZExtValue(), VT);
else if (VT == MVT::i64 && C->getValueType(0) == MVT::f64)
return getConstant(V.bitcastToAPInt().getZExtValue(), VT);
break;
}
}
}
unsigned OpOpcode = Operand.getNode()->getOpcode();
switch (Opcode) {
case ISD::TokenFactor:
case ISD::MERGE_VALUES:
case ISD::CONCAT_VECTORS:
return Operand; case ISD::FP_ROUND: llvm_unreachable("Invalid method to make FP_ROUND node");
case ISD::FP_EXTEND:
assert(VT.isFloatingPoint() &&
Operand.getValueType().isFloatingPoint() && "Invalid FP cast!");
if (Operand.getValueType() == VT) return Operand; assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (Operand.getOpcode() == ISD::UNDEF)
return getUNDEF(VT);
break;
case ISD::SIGN_EXTEND:
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid SIGN_EXTEND!");
if (Operand.getValueType() == VT) return Operand; assert(Operand.getValueType().getScalarType().bitsLT(VT.getScalarType()) &&
"Invalid sext node, dst < src!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::SIGN_EXTEND || OpOpcode == ISD::ZERO_EXTEND)
return getNode(OpOpcode, DL, VT, Operand.getNode()->getOperand(0));
else if (OpOpcode == ISD::UNDEF)
return getConstant(0, VT);
break;
case ISD::ZERO_EXTEND:
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid ZERO_EXTEND!");
if (Operand.getValueType() == VT) return Operand; assert(Operand.getValueType().getScalarType().bitsLT(VT.getScalarType()) &&
"Invalid zext node, dst < src!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::ZERO_EXTEND) return getNode(ISD::ZERO_EXTEND, DL, VT,
Operand.getNode()->getOperand(0));
else if (OpOpcode == ISD::UNDEF)
return getConstant(0, VT);
break;
case ISD::ANY_EXTEND:
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid ANY_EXTEND!");
if (Operand.getValueType() == VT) return Operand; assert(Operand.getValueType().getScalarType().bitsLT(VT.getScalarType()) &&
"Invalid anyext node, dst < src!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND ||
OpOpcode == ISD::ANY_EXTEND)
return getNode(OpOpcode, DL, VT, Operand.getNode()->getOperand(0));
else if (OpOpcode == ISD::UNDEF)
return getUNDEF(VT);
if (OpOpcode == ISD::TRUNCATE) {
SDValue OpOp = Operand.getNode()->getOperand(0);
if (OpOp.getValueType() == VT)
return OpOp;
}
break;
case ISD::TRUNCATE:
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid TRUNCATE!");
if (Operand.getValueType() == VT) return Operand; assert(Operand.getValueType().getScalarType().bitsGT(VT.getScalarType()) &&
"Invalid truncate node, src < dst!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::TRUNCATE)
return getNode(ISD::TRUNCATE, DL, VT, Operand.getNode()->getOperand(0));
else if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND ||
OpOpcode == ISD::ANY_EXTEND) {
if (Operand.getNode()->getOperand(0).getValueType().getScalarType()
.bitsLT(VT.getScalarType()))
return getNode(OpOpcode, DL, VT, Operand.getNode()->getOperand(0));
else if (Operand.getNode()->getOperand(0).getValueType().bitsGT(VT))
return getNode(ISD::TRUNCATE, DL, VT, Operand.getNode()->getOperand(0));
else
return Operand.getNode()->getOperand(0);
}
break;
case ISD::BITCAST:
assert(VT.getSizeInBits() == Operand.getValueType().getSizeInBits()
&& "Cannot BITCAST between types of different sizes!");
if (VT == Operand.getValueType()) return Operand; if (OpOpcode == ISD::BITCAST) return getNode(ISD::BITCAST, DL, VT, Operand.getOperand(0));
if (OpOpcode == ISD::UNDEF)
return getUNDEF(VT);
break;
case ISD::SCALAR_TO_VECTOR:
assert(VT.isVector() && !Operand.getValueType().isVector() &&
(VT.getVectorElementType() == Operand.getValueType() ||
(VT.getVectorElementType().isInteger() &&
Operand.getValueType().isInteger() &&
VT.getVectorElementType().bitsLE(Operand.getValueType()))) &&
"Illegal SCALAR_TO_VECTOR node!");
if (OpOpcode == ISD::UNDEF)
return getUNDEF(VT);
if (OpOpcode == ISD::EXTRACT_VECTOR_ELT &&
isa<ConstantSDNode>(Operand.getOperand(1)) &&
Operand.getConstantOperandVal(1) == 0 &&
Operand.getOperand(0).getValueType() == VT)
return Operand.getOperand(0);
break;
case ISD::FNEG:
if (UnsafeFPMath && OpOpcode == ISD::FSUB)
return getNode(ISD::FSUB, DL, VT, Operand.getNode()->getOperand(1),
Operand.getNode()->getOperand(0));
if (OpOpcode == ISD::FNEG) return Operand.getNode()->getOperand(0);
break;
case ISD::FABS:
if (OpOpcode == ISD::FNEG) return getNode(ISD::FABS, DL, VT, Operand.getNode()->getOperand(0));
break;
}
SDNode *N;
SDVTList VTs = getVTList(VT);
if (VT != MVT::Glue) { FoldingSetNodeID ID;
SDValue Ops[1] = { Operand };
AddNodeIDNode(ID, Opcode, VTs, Ops, 1);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
N = new (NodeAllocator) UnarySDNode(Opcode, DL, VTs, Operand);
CSEMap.InsertNode(N, IP);
} else {
N = new (NodeAllocator) UnarySDNode(Opcode, DL, VTs, Operand);
}
AllNodes.push_back(N);
#ifndef NDEBUG
VerifySDNode(N);
#endif
return SDValue(N, 0);
}
SDValue SelectionDAG::FoldConstantArithmetic(unsigned Opcode,
EVT VT,
ConstantSDNode *Cst1,
ConstantSDNode *Cst2) {
const APInt &C1 = Cst1->getAPIntValue(), &C2 = Cst2->getAPIntValue();
switch (Opcode) {
case ISD::ADD: return getConstant(C1 + C2, VT);
case ISD::SUB: return getConstant(C1 - C2, VT);
case ISD::MUL: return getConstant(C1 * C2, VT);
case ISD::UDIV:
if (C2.getBoolValue()) return getConstant(C1.udiv(C2), VT);
break;
case ISD::UREM:
if (C2.getBoolValue()) return getConstant(C1.urem(C2), VT);
break;
case ISD::SDIV:
if (C2.getBoolValue()) return getConstant(C1.sdiv(C2), VT);
break;
case ISD::SREM:
if (C2.getBoolValue()) return getConstant(C1.srem(C2), VT);
break;
case ISD::AND: return getConstant(C1 & C2, VT);
case ISD::OR: return getConstant(C1 | C2, VT);
case ISD::XOR: return getConstant(C1 ^ C2, VT);
case ISD::SHL: return getConstant(C1 << C2, VT);
case ISD::SRL: return getConstant(C1.lshr(C2), VT);
case ISD::SRA: return getConstant(C1.ashr(C2), VT);
case ISD::ROTL: return getConstant(C1.rotl(C2), VT);
case ISD::ROTR: return getConstant(C1.rotr(C2), VT);
default: break;
}
return SDValue();
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT,
SDValue N1, SDValue N2) {
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.getNode());
ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.getNode());
switch (Opcode) {
default: break;
case ISD::TokenFactor:
assert(VT == MVT::Other && N1.getValueType() == MVT::Other &&
N2.getValueType() == MVT::Other && "Invalid token factor!");
if (N1.getOpcode() == ISD::EntryToken) return N2;
if (N2.getOpcode() == ISD::EntryToken) return N1;
if (N1 == N2) return N1;
break;
case ISD::CONCAT_VECTORS:
if (N1.getOpcode() == ISD::BUILD_VECTOR &&
N2.getOpcode() == ISD::BUILD_VECTOR) {
SmallVector<SDValue, 16> Elts(N1.getNode()->op_begin(),
N1.getNode()->op_end());
Elts.append(N2.getNode()->op_begin(), N2.getNode()->op_end());
return getNode(ISD::BUILD_VECTOR, DL, VT, &Elts[0], Elts.size());
}
break;
case ISD::AND:
assert(VT.isInteger() && "This operator does not apply to FP types!");
assert(N1.getValueType() == N2.getValueType() &&
N1.getValueType() == VT && "Binary operator types must match!");
if (N2C && N2C->isNullValue())
return N2;
if (N2C && N2C->isAllOnesValue()) return N1;
break;
case ISD::OR:
case ISD::XOR:
case ISD::ADD:
case ISD::SUB:
assert(VT.isInteger() && "This operator does not apply to FP types!");
assert(N1.getValueType() == N2.getValueType() &&
N1.getValueType() == VT && "Binary operator types must match!");
if (N2C && N2C->isNullValue())
return N1;
break;
case ISD::UDIV:
case ISD::UREM:
case ISD::MULHU:
case ISD::MULHS:
case ISD::MUL:
case ISD::SDIV:
case ISD::SREM:
assert(VT.isInteger() && "This operator does not apply to FP types!");
assert(N1.getValueType() == N2.getValueType() &&
N1.getValueType() == VT && "Binary operator types must match!");
break;
case ISD::FADD:
case ISD::FSUB:
case ISD::FMUL:
case ISD::FDIV:
case ISD::FREM:
if (UnsafeFPMath) {
if (Opcode == ISD::FADD) {
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(N1))
if (CFP->getValueAPF().isZero())
return N2;
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(N2))
if (CFP->getValueAPF().isZero())
return N1;
} else if (Opcode == ISD::FSUB) {
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(N2))
if (CFP->getValueAPF().isZero())
return N1;
}
}
assert(VT.isFloatingPoint() && "This operator only applies to FP types!");
assert(N1.getValueType() == N2.getValueType() &&
N1.getValueType() == VT && "Binary operator types must match!");
break;
case ISD::FCOPYSIGN: assert(N1.getValueType() == VT &&
N1.getValueType().isFloatingPoint() &&
N2.getValueType().isFloatingPoint() &&
"Invalid FCOPYSIGN!");
break;
case ISD::SHL:
case ISD::SRA:
case ISD::SRL:
case ISD::ROTL:
case ISD::ROTR:
assert(VT == N1.getValueType() &&
"Shift operators return type must be the same as their first arg");
assert(VT.isInteger() && N2.getValueType().isInteger() &&
"Shifts only work on integers");
assert(N2.getValueType().getSizeInBits() >=
Log2_32_Ceil(N1.getValueType().getSizeInBits()) &&
"Invalid use of small shift amount with oversized value!");
if (VT == MVT::i1)
return N1;
if (N2C && N2C->isNullValue())
return N1;
break;
case ISD::FP_ROUND_INREG: {
EVT EVT = cast<VTSDNode>(N2)->getVT();
assert(VT == N1.getValueType() && "Not an inreg round!");
assert(VT.isFloatingPoint() && EVT.isFloatingPoint() &&
"Cannot FP_ROUND_INREG integer types");
assert(EVT.isVector() == VT.isVector() &&
"FP_ROUND_INREG type should be vector iff the operand "
"type is vector!");
assert((!EVT.isVector() ||
EVT.getVectorNumElements() == VT.getVectorNumElements()) &&
"Vector element counts must match in FP_ROUND_INREG");
assert(EVT.bitsLE(VT) && "Not rounding down!");
if (cast<VTSDNode>(N2)->getVT() == VT) return N1; break;
}
case ISD::FP_ROUND:
assert(VT.isFloatingPoint() &&
N1.getValueType().isFloatingPoint() &&
VT.bitsLE(N1.getValueType()) &&
isa<ConstantSDNode>(N2) && "Invalid FP_ROUND!");
if (N1.getValueType() == VT) return N1; break;
case ISD::AssertSext:
case ISD::AssertZext: {
EVT EVT = cast<VTSDNode>(N2)->getVT();
assert(VT == N1.getValueType() && "Not an inreg extend!");
assert(VT.isInteger() && EVT.isInteger() &&
"Cannot *_EXTEND_INREG FP types");
assert(!EVT.isVector() &&
"AssertSExt/AssertZExt type should be the vector element type "
"rather than the vector type!");
assert(EVT.bitsLE(VT) && "Not extending!");
if (VT == EVT) return N1; break;
}
case ISD::SIGN_EXTEND_INREG: {
EVT EVT = cast<VTSDNode>(N2)->getVT();
assert(VT == N1.getValueType() && "Not an inreg extend!");
assert(VT.isInteger() && EVT.isInteger() &&
"Cannot *_EXTEND_INREG FP types");
assert(EVT.isVector() == VT.isVector() &&
"SIGN_EXTEND_INREG type should be vector iff the operand "
"type is vector!");
assert((!EVT.isVector() ||
EVT.getVectorNumElements() == VT.getVectorNumElements()) &&
"Vector element counts must match in SIGN_EXTEND_INREG");
assert(EVT.bitsLE(VT) && "Not extending!");
if (EVT == VT) return N1;
if (N1C) {
APInt Val = N1C->getAPIntValue();
unsigned FromBits = EVT.getScalarType().getSizeInBits();
Val <<= Val.getBitWidth()-FromBits;
Val = Val.ashr(Val.getBitWidth()-FromBits);
return getConstant(Val, VT);
}
break;
}
case ISD::EXTRACT_VECTOR_ELT:
if (N1.getOpcode() == ISD::UNDEF)
return getUNDEF(VT);
if (N2C &&
N1.getOpcode() == ISD::CONCAT_VECTORS &&
N1.getNumOperands() > 0) {
unsigned Factor =
N1.getOperand(0).getValueType().getVectorNumElements();
return getNode(ISD::EXTRACT_VECTOR_ELT, DL, VT,
N1.getOperand(N2C->getZExtValue() / Factor),
getConstant(N2C->getZExtValue() % Factor,
N2.getValueType()));
}
if (N2C && N1.getOpcode() == ISD::BUILD_VECTOR) {
SDValue Elt = N1.getOperand(N2C->getZExtValue());
EVT VEltTy = N1.getValueType().getVectorElementType();
if (Elt.getValueType() != VEltTy) {
Elt = getNode(ISD::TRUNCATE, DL, VEltTy, Elt);
}
if (VT != VEltTy) {
Elt = getNode(ISD::ANY_EXTEND, DL, VT, Elt);
}
return Elt;
}
if (N1.getOpcode() == ISD::INSERT_VECTOR_ELT) {
SDValue N1Op2 = N1.getOperand(2);
ConstantSDNode *N1Op2C = dyn_cast<ConstantSDNode>(N1Op2.getNode());
if (N1Op2C && N2C) {
if (N1Op2C->getZExtValue() == N2C->getZExtValue()) {
if (VT == N1.getOperand(1).getValueType())
return N1.getOperand(1);
else
return getSExtOrTrunc(N1.getOperand(1), DL, VT);
}
return getNode(ISD::EXTRACT_VECTOR_ELT, DL, VT, N1.getOperand(0), N2);
}
}
break;
case ISD::EXTRACT_ELEMENT:
assert(N2C && (unsigned)N2C->getZExtValue() < 2 && "Bad EXTRACT_ELEMENT!");
assert(!N1.getValueType().isVector() && !VT.isVector() &&
(N1.getValueType().isInteger() == VT.isInteger()) &&
"Wrong types for EXTRACT_ELEMENT!");
if (N1.getOpcode() == ISD::BUILD_PAIR)
return N1.getOperand(N2C->getZExtValue());
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N1)) {
unsigned ElementSize = VT.getSizeInBits();
unsigned Shift = ElementSize * N2C->getZExtValue();
APInt ShiftedVal = C->getAPIntValue().lshr(Shift);
return getConstant(ShiftedVal.trunc(ElementSize), VT);
}
break;
case ISD::EXTRACT_SUBVECTOR: {
SDValue Index = N2;
if (VT.isSimple() && N1.getValueType().isSimple()) {
assert(VT.isVector() && N1.getValueType().isVector() &&
"Extract subvector VTs must be a vectors!");
assert(VT.getVectorElementType() == N1.getValueType().getVectorElementType() &&
"Extract subvector VTs must have the same element type!");
assert(VT.getSimpleVT() <= N1.getValueType().getSimpleVT() &&
"Extract subvector must be from larger vector to smaller vector!");
if (isa<ConstantSDNode>(Index.getNode())) {
assert((VT.getVectorNumElements() +
cast<ConstantSDNode>(Index.getNode())->getZExtValue()
<= N1.getValueType().getVectorNumElements())
&& "Extract subvector overflow!");
}
if (VT.getSimpleVT() == N1.getValueType().getSimpleVT())
return N1;
}
break;
}
}
if (N1C) {
if (N2C) {
SDValue SV = FoldConstantArithmetic(Opcode, VT, N1C, N2C);
if (SV.getNode()) return SV;
} else { if (isCommutativeBinOp(Opcode)) {
std::swap(N1C, N2C);
std::swap(N1, N2);
}
}
}
ConstantFPSDNode *N1CFP = dyn_cast<ConstantFPSDNode>(N1.getNode());
ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.getNode());
if (N1CFP) {
if (!N2CFP && isCommutativeBinOp(Opcode)) {
std::swap(N1CFP, N2CFP);
std::swap(N1, N2);
} else if (N2CFP && VT != MVT::ppcf128) {
APFloat V1 = N1CFP->getValueAPF(), V2 = N2CFP->getValueAPF();
APFloat::opStatus s;
switch (Opcode) {
case ISD::FADD:
s = V1.add(V2, APFloat::rmNearestTiesToEven);
if (s != APFloat::opInvalidOp)
return getConstantFP(V1, VT);
break;
case ISD::FSUB:
s = V1.subtract(V2, APFloat::rmNearestTiesToEven);
if (s!=APFloat::opInvalidOp)
return getConstantFP(V1, VT);
break;
case ISD::FMUL:
s = V1.multiply(V2, APFloat::rmNearestTiesToEven);
if (s!=APFloat::opInvalidOp)
return getConstantFP(V1, VT);
break;
case ISD::FDIV:
s = V1.divide(V2, APFloat::rmNearestTiesToEven);
if (s!=APFloat::opInvalidOp && s!=APFloat::opDivByZero)
return getConstantFP(V1, VT);
break;
case ISD::FREM :
s = V1.mod(V2, APFloat::rmNearestTiesToEven);
if (s!=APFloat::opInvalidOp && s!=APFloat::opDivByZero)
return getConstantFP(V1, VT);
break;
case ISD::FCOPYSIGN:
V1.copySign(V2);
return getConstantFP(V1, VT);
default: break;
}
}
}
if (N1.getOpcode() == ISD::UNDEF) {
if (isCommutativeBinOp(Opcode)) {
std::swap(N1, N2);
} else {
switch (Opcode) {
case ISD::FP_ROUND_INREG:
case ISD::SIGN_EXTEND_INREG:
case ISD::SUB:
case ISD::FSUB:
case ISD::FDIV:
case ISD::FREM:
case ISD::SRA:
return N1; case ISD::UDIV:
case ISD::SDIV:
case ISD::UREM:
case ISD::SREM:
case ISD::SRL:
case ISD::SHL:
if (!VT.isVector())
return getConstant(0, VT); return N2;
}
}
}
if (N2.getOpcode() == ISD::UNDEF) {
switch (Opcode) {
case ISD::XOR:
if (N1.getOpcode() == ISD::UNDEF)
return getConstant(0, VT);
case ISD::ADD:
case ISD::ADDC:
case ISD::ADDE:
case ISD::SUB:
case ISD::UDIV:
case ISD::SDIV:
case ISD::UREM:
case ISD::SREM:
return N2; case ISD::FADD:
case ISD::FSUB:
case ISD::FMUL:
case ISD::FDIV:
case ISD::FREM:
if (UnsafeFPMath)
return N2;
break;
case ISD::MUL:
case ISD::AND:
case ISD::SRL:
case ISD::SHL:
if (!VT.isVector())
return getConstant(0, VT); return N1;
case ISD::OR:
if (!VT.isVector())
return getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT);
return N1;
case ISD::SRA:
return N1;
}
}
SDNode *N;
SDVTList VTs = getVTList(VT);
if (VT != MVT::Glue) {
SDValue Ops[] = { N1, N2 };
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTs, Ops, 2);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
N = new (NodeAllocator) BinarySDNode(Opcode, DL, VTs, N1, N2);
CSEMap.InsertNode(N, IP);
} else {
N = new (NodeAllocator) BinarySDNode(Opcode, DL, VTs, N1, N2);
}
AllNodes.push_back(N);
#ifndef NDEBUG
VerifySDNode(N);
#endif
return SDValue(N, 0);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT,
SDValue N1, SDValue N2, SDValue N3) {
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.getNode());
switch (Opcode) {
case ISD::CONCAT_VECTORS:
if (N1.getOpcode() == ISD::BUILD_VECTOR &&
N2.getOpcode() == ISD::BUILD_VECTOR &&
N3.getOpcode() == ISD::BUILD_VECTOR) {
SmallVector<SDValue, 16> Elts(N1.getNode()->op_begin(),
N1.getNode()->op_end());
Elts.append(N2.getNode()->op_begin(), N2.getNode()->op_end());
Elts.append(N3.getNode()->op_begin(), N3.getNode()->op_end());
return getNode(ISD::BUILD_VECTOR, DL, VT, &Elts[0], Elts.size());
}
break;
case ISD::SETCC: {
SDValue Simp = FoldSetCC(VT, N1, N2, cast<CondCodeSDNode>(N3)->get(), DL);
if (Simp.getNode()) return Simp;
break;
}
case ISD::SELECT:
if (N1C) {
if (N1C->getZExtValue())
return N2; else
return N3; }
if (N2 == N3) return N2; break;
case ISD::VECTOR_SHUFFLE:
llvm_unreachable("should use getVectorShuffle constructor!");
break;
case ISD::INSERT_SUBVECTOR: {
SDValue Index = N3;
if (VT.isSimple() && N1.getValueType().isSimple()
&& N2.getValueType().isSimple()) {
assert(VT.isVector() && N1.getValueType().isVector() &&
N2.getValueType().isVector() &&
"Insert subvector VTs must be a vectors");
assert(VT == N1.getValueType() &&
"Dest and insert subvector source types must match!");
assert(N2.getValueType().getSimpleVT() <= N1.getValueType().getSimpleVT() &&
"Insert subvector must be from smaller vector to larger vector!");
if (isa<ConstantSDNode>(Index.getNode())) {
assert((N2.getValueType().getVectorNumElements() +
cast<ConstantSDNode>(Index.getNode())->getZExtValue()
<= VT.getVectorNumElements())
&& "Insert subvector overflow!");
}
if (VT.getSimpleVT() == N2.getValueType().getSimpleVT())
return N2;
}
break;
}
case ISD::BITCAST:
if (N1.getValueType() == VT)
return N1;
break;
}
SDNode *N;
SDVTList VTs = getVTList(VT);
if (VT != MVT::Glue) {
SDValue Ops[] = { N1, N2, N3 };
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTs, Ops, 3);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
N = new (NodeAllocator) TernarySDNode(Opcode, DL, VTs, N1, N2, N3);
CSEMap.InsertNode(N, IP);
} else {
N = new (NodeAllocator) TernarySDNode(Opcode, DL, VTs, N1, N2, N3);
}
AllNodes.push_back(N);
#ifndef NDEBUG
VerifySDNode(N);
#endif
return SDValue(N, 0);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT,
SDValue N1, SDValue N2, SDValue N3,
SDValue N4) {
SDValue Ops[] = { N1, N2, N3, N4 };
return getNode(Opcode, DL, VT, Ops, 4);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT,
SDValue N1, SDValue N2, SDValue N3,
SDValue N4, SDValue N5) {
SDValue Ops[] = { N1, N2, N3, N4, N5 };
return getNode(Opcode, DL, VT, Ops, 5);
}
SDValue SelectionDAG::getStackArgumentTokenFactor(SDValue Chain) {
SmallVector<SDValue, 8> ArgChains;
ArgChains.push_back(Chain);
for (SDNode::use_iterator U = getEntryNode().getNode()->use_begin(),
UE = getEntryNode().getNode()->use_end(); U != UE; ++U)
if (LoadSDNode *L = dyn_cast<LoadSDNode>(*U))
if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(L->getBasePtr()))
if (FI->getIndex() < 0)
ArgChains.push_back(SDValue(L, 1));
return getNode(ISD::TokenFactor, Chain.getDebugLoc(), MVT::Other,
&ArgChains[0], ArgChains.size());
}
static APInt SplatByte(unsigned NumBits, uint8_t ByteVal) {
APInt Val = APInt(NumBits, ByteVal);
unsigned Shift = 8;
for (unsigned i = NumBits; i > 8; i >>= 1) {
Val = (Val << Shift) | Val;
Shift <<= 1;
}
return Val;
}
static SDValue getMemsetValue(SDValue Value, EVT VT, SelectionDAG &DAG,
DebugLoc dl) {
assert(Value.getOpcode() != ISD::UNDEF);
unsigned NumBits = VT.getScalarType().getSizeInBits();
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Value)) {
APInt Val = SplatByte(NumBits, C->getZExtValue() & 255);
if (VT.isInteger())
return DAG.getConstant(Val, VT);
return DAG.getConstantFP(APFloat(Val), VT);
}
Value = DAG.getNode(ISD::ZERO_EXTEND, dl, VT, Value);
if (NumBits > 8) {
APInt Magic = SplatByte(NumBits, 0x01);
Value = DAG.getNode(ISD::MUL, dl, VT, Value, DAG.getConstant(Magic, VT));
}
return Value;
}
static SDValue getMemsetStringVal(EVT VT, DebugLoc dl, SelectionDAG &DAG,
const TargetLowering &TLI,
std::string &Str, unsigned Offset) {
if (Str.empty()) {
if (VT.isInteger())
return DAG.getConstant(0, VT);
else if (VT == MVT::f32 || VT == MVT::f64)
return DAG.getConstantFP(0.0, VT);
else if (VT.isVector()) {
unsigned NumElts = VT.getVectorNumElements();
MVT EltVT = (VT.getVectorElementType() == MVT::f32) ? MVT::i32 : MVT::i64;
return DAG.getNode(ISD::BITCAST, dl, VT,
DAG.getConstant(0, EVT::getVectorVT(*DAG.getContext(),
EltVT, NumElts)));
} else
llvm_unreachable("Expected type!");
}
assert(!VT.isVector() && "Can't handle vector type here!");
unsigned NumBits = VT.getSizeInBits();
unsigned MSB = NumBits / 8;
uint64_t Val = 0;
if (TLI.isLittleEndian())
Offset = Offset + MSB - 1;
for (unsigned i = 0; i != MSB; ++i) {
Val = (Val << 8) | (unsigned char)Str[Offset];
Offset += TLI.isLittleEndian() ? -1 : 1;
}
return DAG.getConstant(Val, VT);
}
static SDValue getMemBasePlusOffset(SDValue Base, unsigned Offset,
SelectionDAG &DAG) {
EVT VT = Base.getValueType();
return DAG.getNode(ISD::ADD, Base.getDebugLoc(),
VT, Base, DAG.getConstant(Offset, VT));
}
static bool isMemSrcFromString(SDValue Src, std::string &Str) {
unsigned SrcDelta = 0;
GlobalAddressSDNode *G = NULL;
if (Src.getOpcode() == ISD::GlobalAddress)
G = cast<GlobalAddressSDNode>(Src);
else if (Src.getOpcode() == ISD::ADD &&
Src.getOperand(0).getOpcode() == ISD::GlobalAddress &&
Src.getOperand(1).getOpcode() == ISD::Constant) {
G = cast<GlobalAddressSDNode>(Src.getOperand(0));
SrcDelta = cast<ConstantSDNode>(Src.getOperand(1))->getZExtValue();
}
if (!G)
return false;
const GlobalVariable *GV = dyn_cast<GlobalVariable>(G->getGlobal());
if (GV && GetConstantStringInfo(GV, Str, SrcDelta, false))
return true;
return false;
}
static bool FindOptimalMemOpLowering(std::vector<EVT> &MemOps,
unsigned Limit, uint64_t Size,
unsigned DstAlign, unsigned SrcAlign,
bool NonScalarIntSafe,
bool MemcpyStrSrc,
SelectionDAG &DAG,
const TargetLowering &TLI) {
assert((SrcAlign == 0 || SrcAlign >= DstAlign) &&
"Expecting memcpy / memset source to meet alignment requirement!");
EVT VT = TLI.getOptimalMemOpType(Size, DstAlign, SrcAlign,
NonScalarIntSafe, MemcpyStrSrc,
DAG.getMachineFunction());
if (VT == MVT::Other) {
if (DstAlign >= TLI.getTargetData()->getPointerPrefAlignment() ||
TLI.allowsUnalignedMemoryAccesses(VT)) {
VT = TLI.getPointerTy();
} else {
switch (DstAlign & 7) {
case 0: VT = MVT::i64; break;
case 4: VT = MVT::i32; break;
case 2: VT = MVT::i16; break;
default: VT = MVT::i8; break;
}
}
MVT LVT = MVT::i64;
while (!TLI.isTypeLegal(LVT))
LVT = (MVT::SimpleValueType)(LVT.SimpleTy - 1);
assert(LVT.isInteger());
if (VT.bitsGT(LVT))
VT = LVT;
}
unsigned NumMemOps = 0;
while (Size != 0) {
unsigned VTSize = VT.getSizeInBits() / 8;
while (VTSize > Size) {
if (VT.isVector() || VT.isFloatingPoint()) {
VT = MVT::i64;
while (!TLI.isTypeLegal(VT))
VT = (MVT::SimpleValueType)(VT.getSimpleVT().SimpleTy - 1);
VTSize = VT.getSizeInBits() / 8;
} else {
VT = (MVT::SimpleValueType)(VT.getSimpleVT().SimpleTy - 1);
VTSize >>= 1;
}
}
if (++NumMemOps > Limit)
return false;
MemOps.push_back(VT);
Size -= VTSize;
}
return true;
}
static SDValue getMemcpyLoadsAndStores(SelectionDAG &DAG, DebugLoc dl,
SDValue Chain, SDValue Dst,
SDValue Src, uint64_t Size,
unsigned Align, bool isVol,
bool AlwaysInline,
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) {
if (Src.getOpcode() == ISD::UNDEF)
return Chain;
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
std::vector<EVT> MemOps;
bool DstAlignCanChange = false;
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
bool OptSize = MF.getFunction()->hasFnAttr(Attribute::OptimizeForSize);
FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Dst);
if (FI && !MFI->isFixedObjectIndex(FI->getIndex()))
DstAlignCanChange = true;
unsigned SrcAlign = DAG.InferPtrAlignment(Src);
if (Align > SrcAlign)
SrcAlign = Align;
std::string Str;
bool CopyFromStr = isMemSrcFromString(Src, Str);
bool isZeroStr = CopyFromStr && Str.empty();
unsigned Limit = AlwaysInline ? ~0U : TLI.getMaxStoresPerMemcpy(OptSize);
if (!FindOptimalMemOpLowering(MemOps, Limit, Size,
(DstAlignCanChange ? 0 : Align),
(isZeroStr ? 0 : SrcAlign),
true, CopyFromStr, DAG, TLI))
return SDValue();
if (DstAlignCanChange) {
const Type *Ty = MemOps[0].getTypeForEVT(*DAG.getContext());
unsigned NewAlign = (unsigned) TLI.getTargetData()->getABITypeAlignment(Ty);
if (NewAlign > Align) {
if (MFI->getObjectAlignment(FI->getIndex()) < NewAlign)
MFI->setObjectAlignment(FI->getIndex(), NewAlign);
Align = NewAlign;
}
}
SmallVector<SDValue, 8> OutChains;
unsigned NumMemOps = MemOps.size();
uint64_t SrcOff = 0, DstOff = 0;
for (unsigned i = 0; i != NumMemOps; ++i) {
EVT VT = MemOps[i];
unsigned VTSize = VT.getSizeInBits() / 8;
SDValue Value, Store;
if (CopyFromStr &&
(isZeroStr || (VT.isInteger() && !VT.isVector()))) {
Value = getMemsetStringVal(VT, dl, DAG, TLI, Str, SrcOff);
Store = DAG.getStore(Chain, dl, Value,
getMemBasePlusOffset(Dst, DstOff, DAG),
DstPtrInfo.getWithOffset(DstOff), isVol,
false, Align);
} else {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
assert(NVT.bitsGE(VT));
Value = DAG.getExtLoad(ISD::EXTLOAD, dl, NVT, Chain,
getMemBasePlusOffset(Src, SrcOff, DAG),
SrcPtrInfo.getWithOffset(SrcOff), VT, isVol, false,
MinAlign(SrcAlign, SrcOff));
Store = DAG.getTruncStore(Chain, dl, Value,
getMemBasePlusOffset(Dst, DstOff, DAG),
DstPtrInfo.getWithOffset(DstOff), VT, isVol,
false, Align);
}
OutChains.push_back(Store);
SrcOff += VTSize;
DstOff += VTSize;
}
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&OutChains[0], OutChains.size());
}
static SDValue getMemmoveLoadsAndStores(SelectionDAG &DAG, DebugLoc dl,
SDValue Chain, SDValue Dst,
SDValue Src, uint64_t Size,
unsigned Align, bool isVol,
bool AlwaysInline,
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) {
if (Src.getOpcode() == ISD::UNDEF)
return Chain;
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
std::vector<EVT> MemOps;
bool DstAlignCanChange = false;
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
bool OptSize = MF.getFunction()->hasFnAttr(Attribute::OptimizeForSize);
FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Dst);
if (FI && !MFI->isFixedObjectIndex(FI->getIndex()))
DstAlignCanChange = true;
unsigned SrcAlign = DAG.InferPtrAlignment(Src);
if (Align > SrcAlign)
SrcAlign = Align;
unsigned Limit = AlwaysInline ? ~0U : TLI.getMaxStoresPerMemmove(OptSize);
if (!FindOptimalMemOpLowering(MemOps, Limit, Size,
(DstAlignCanChange ? 0 : Align),
SrcAlign, true, false, DAG, TLI))
return SDValue();
if (DstAlignCanChange) {
const Type *Ty = MemOps[0].getTypeForEVT(*DAG.getContext());
unsigned NewAlign = (unsigned) TLI.getTargetData()->getABITypeAlignment(Ty);
if (NewAlign > Align) {
if (MFI->getObjectAlignment(FI->getIndex()) < NewAlign)
MFI->setObjectAlignment(FI->getIndex(), NewAlign);
Align = NewAlign;
}
}
uint64_t SrcOff = 0, DstOff = 0;
SmallVector<SDValue, 8> LoadValues;
SmallVector<SDValue, 8> LoadChains;
SmallVector<SDValue, 8> OutChains;
unsigned NumMemOps = MemOps.size();
for (unsigned i = 0; i < NumMemOps; i++) {
EVT VT = MemOps[i];
unsigned VTSize = VT.getSizeInBits() / 8;
SDValue Value, Store;
Value = DAG.getLoad(VT, dl, Chain,
getMemBasePlusOffset(Src, SrcOff, DAG),
SrcPtrInfo.getWithOffset(SrcOff), isVol,
false, SrcAlign);
LoadValues.push_back(Value);
LoadChains.push_back(Value.getValue(1));
SrcOff += VTSize;
}
Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&LoadChains[0], LoadChains.size());
OutChains.clear();
for (unsigned i = 0; i < NumMemOps; i++) {
EVT VT = MemOps[i];
unsigned VTSize = VT.getSizeInBits() / 8;
SDValue Value, Store;
Store = DAG.getStore(Chain, dl, LoadValues[i],
getMemBasePlusOffset(Dst, DstOff, DAG),
DstPtrInfo.getWithOffset(DstOff), isVol, false, Align);
OutChains.push_back(Store);
DstOff += VTSize;
}
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&OutChains[0], OutChains.size());
}
static SDValue getMemsetStores(SelectionDAG &DAG, DebugLoc dl,
SDValue Chain, SDValue Dst,
SDValue Src, uint64_t Size,
unsigned Align, bool isVol,
MachinePointerInfo DstPtrInfo) {
if (Src.getOpcode() == ISD::UNDEF)
return Chain;
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
std::vector<EVT> MemOps;
bool DstAlignCanChange = false;
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
bool OptSize = MF.getFunction()->hasFnAttr(Attribute::OptimizeForSize);
FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Dst);
if (FI && !MFI->isFixedObjectIndex(FI->getIndex()))
DstAlignCanChange = true;
bool NonScalarIntSafe =
isa<ConstantSDNode>(Src) && cast<ConstantSDNode>(Src)->isNullValue();
if (!FindOptimalMemOpLowering(MemOps, TLI.getMaxStoresPerMemset(OptSize),
Size, (DstAlignCanChange ? 0 : Align), 0,
NonScalarIntSafe, false, DAG, TLI))
return SDValue();
if (DstAlignCanChange) {
const Type *Ty = MemOps[0].getTypeForEVT(*DAG.getContext());
unsigned NewAlign = (unsigned) TLI.getTargetData()->getABITypeAlignment(Ty);
if (NewAlign > Align) {
if (MFI->getObjectAlignment(FI->getIndex()) < NewAlign)
MFI->setObjectAlignment(FI->getIndex(), NewAlign);
Align = NewAlign;
}
}
SmallVector<SDValue, 8> OutChains;
uint64_t DstOff = 0;
unsigned NumMemOps = MemOps.size();
EVT LargestVT = MemOps[0];
for (unsigned i = 1; i < NumMemOps; i++)
if (MemOps[i].bitsGT(LargestVT))
LargestVT = MemOps[i];
SDValue MemSetValue = getMemsetValue(Src, LargestVT, DAG, dl);
for (unsigned i = 0; i < NumMemOps; i++) {
EVT VT = MemOps[i];
SDValue Value = MemSetValue;
if (VT.bitsLT(LargestVT)) {
if (!LargestVT.isVector() && !VT.isVector() &&
TLI.isTruncateFree(LargestVT, VT))
Value = DAG.getNode(ISD::TRUNCATE, dl, VT, MemSetValue);
else
Value = getMemsetValue(Src, VT, DAG, dl);
}
assert(Value.getValueType() == VT && "Value with wrong type.");
SDValue Store = DAG.getStore(Chain, dl, Value,
getMemBasePlusOffset(Dst, DstOff, DAG),
DstPtrInfo.getWithOffset(DstOff),
isVol, false, Align);
OutChains.push_back(Store);
DstOff += VT.getSizeInBits() / 8;
}
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&OutChains[0], OutChains.size());
}
SDValue SelectionDAG::getMemcpy(SDValue Chain, DebugLoc dl, SDValue Dst,
SDValue Src, SDValue Size,
unsigned Align, bool isVol, bool AlwaysInline,
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) {
ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
if (ConstantSize) {
if (ConstantSize->isNullValue())
return Chain;
SDValue Result = getMemcpyLoadsAndStores(*this, dl, Chain, Dst, Src,
ConstantSize->getZExtValue(),Align,
isVol, false, DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
}
SDValue Result =
TSI.EmitTargetCodeForMemcpy(*this, dl, Chain, Dst, Src, Size, Align,
isVol, AlwaysInline,
DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
if (AlwaysInline) {
assert(ConstantSize && "AlwaysInline requires a constant size!");
return getMemcpyLoadsAndStores(*this, dl, Chain, Dst, Src,
ConstantSize->getZExtValue(), Align, isVol,
true, DstPtrInfo, SrcPtrInfo);
}
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;
Entry.Ty = TLI.getTargetData()->getIntPtrType(*getContext());
Entry.Node = Dst; Args.push_back(Entry);
Entry.Node = Src; Args.push_back(Entry);
Entry.Node = Size; Args.push_back(Entry);
std::pair<SDValue,SDValue> CallResult =
TLI.LowerCallTo(Chain, Type::getVoidTy(*getContext()),
false, false, false, false, 0,
TLI.getLibcallCallingConv(RTLIB::MEMCPY), false,
false,
getExternalSymbol(TLI.getLibcallName(RTLIB::MEMCPY),
TLI.getPointerTy()),
Args, *this, dl);
return CallResult.second;
}
SDValue SelectionDAG::getMemmove(SDValue Chain, DebugLoc dl, SDValue Dst,
SDValue Src, SDValue Size,
unsigned Align, bool isVol,
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) {
ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
if (ConstantSize) {
if (ConstantSize->isNullValue())
return Chain;
SDValue Result =
getMemmoveLoadsAndStores(*this, dl, Chain, Dst, Src,
ConstantSize->getZExtValue(), Align, isVol,
false, DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
}
SDValue Result =
TSI.EmitTargetCodeForMemmove(*this, dl, Chain, Dst, Src, Size, Align, isVol,
DstPtrInfo, SrcPtrInfo);
if (Result.getNode())
return Result;
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;
Entry.Ty = TLI.getTargetData()->getIntPtrType(*getContext());
Entry.Node = Dst; Args.push_back(Entry);
Entry.Node = Src; Args.push_back(Entry);
Entry.Node = Size; Args.push_back(Entry);
std::pair<SDValue,SDValue> CallResult =
TLI.LowerCallTo(Chain, Type::getVoidTy(*getContext()),
false, false, false, false, 0,
TLI.getLibcallCallingConv(RTLIB::MEMMOVE), false,
false,
getExternalSymbol(TLI.getLibcallName(RTLIB::MEMMOVE),
TLI.getPointerTy()),
Args, *this, dl);
return CallResult.second;
}
SDValue SelectionDAG::getMemset(SDValue Chain, DebugLoc dl, SDValue Dst,
SDValue Src, SDValue Size,
unsigned Align, bool isVol,
MachinePointerInfo DstPtrInfo) {
ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
if (ConstantSize) {
if (ConstantSize->isNullValue())
return Chain;
SDValue Result =
getMemsetStores(*this, dl, Chain, Dst, Src, ConstantSize->getZExtValue(),
Align, isVol, DstPtrInfo);
if (Result.getNode())
return Result;
}
SDValue Result =
TSI.EmitTargetCodeForMemset(*this, dl, Chain, Dst, Src, Size, Align, isVol,
DstPtrInfo);
if (Result.getNode())
return Result;
const Type *IntPtrTy = TLI.getTargetData()->getIntPtrType(*getContext());
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;
Entry.Node = Dst; Entry.Ty = IntPtrTy;
Args.push_back(Entry);
if (Src.getValueType().bitsGT(MVT::i32))
Src = getNode(ISD::TRUNCATE, dl, MVT::i32, Src);
else
Src = getNode(ISD::ZERO_EXTEND, dl, MVT::i32, Src);
Entry.Node = Src;
Entry.Ty = Type::getInt32Ty(*getContext());
Entry.isSExt = true;
Args.push_back(Entry);
Entry.Node = Size;
Entry.Ty = IntPtrTy;
Entry.isSExt = false;
Args.push_back(Entry);
std::pair<SDValue,SDValue> CallResult =
TLI.LowerCallTo(Chain, Type::getVoidTy(*getContext()),
false, false, false, false, 0,
TLI.getLibcallCallingConv(RTLIB::MEMSET), false,
false,
getExternalSymbol(TLI.getLibcallName(RTLIB::MEMSET),
TLI.getPointerTy()),
Args, *this, dl);
return CallResult.second;
}
SDValue SelectionDAG::getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT,
SDValue Chain, SDValue Ptr, SDValue Cmp,
SDValue Swp, MachinePointerInfo PtrInfo,
unsigned Alignment) {
if (Alignment == 0) Alignment = getEVTAlignment(MemVT);
MachineFunction &MF = getMachineFunction();
unsigned Flags = MachineMemOperand::MOLoad | MachineMemOperand::MOStore;
Flags |= MachineMemOperand::MOVolatile;
MachineMemOperand *MMO =
MF.getMachineMemOperand(PtrInfo, Flags, MemVT.getStoreSize(), Alignment);
return getAtomic(Opcode, dl, MemVT, Chain, Ptr, Cmp, Swp, MMO);
}
SDValue SelectionDAG::getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT,
SDValue Chain,
SDValue Ptr, SDValue Cmp,
SDValue Swp, MachineMemOperand *MMO) {
assert(Opcode == ISD::ATOMIC_CMP_SWAP && "Invalid Atomic Op");
assert(Cmp.getValueType() == Swp.getValueType() && "Invalid Atomic Op Types");
EVT VT = Cmp.getValueType();
SDVTList VTs = getVTList(VT, MVT::Other);
FoldingSetNodeID ID;
ID.AddInteger(MemVT.getRawBits());
SDValue Ops[] = {Chain, Ptr, Cmp, Swp};
AddNodeIDNode(ID, Opcode, VTs, Ops, 4);
void* IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) {
cast<AtomicSDNode>(E)->refineAlignment(MMO);
return SDValue(E, 0);
}
SDNode *N = new (NodeAllocator) AtomicSDNode(Opcode, dl, VTs, MemVT, Chain,
Ptr, Cmp, Swp, MMO);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT,
SDValue Chain,
SDValue Ptr, SDValue Val,
const Value* PtrVal,
unsigned Alignment) {
if (Alignment == 0) Alignment = getEVTAlignment(MemVT);
MachineFunction &MF = getMachineFunction();
unsigned Flags = MachineMemOperand::MOLoad | MachineMemOperand::MOStore;
Flags |= MachineMemOperand::MOVolatile;
MachineMemOperand *MMO =
MF.getMachineMemOperand(MachinePointerInfo(PtrVal), Flags,
MemVT.getStoreSize(), Alignment);
return getAtomic(Opcode, dl, MemVT, Chain, Ptr, Val, MMO);
}
SDValue SelectionDAG::getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT,
SDValue Chain,
SDValue Ptr, SDValue Val,
MachineMemOperand *MMO) {
assert((Opcode == ISD::ATOMIC_LOAD_ADD ||
Opcode == ISD::ATOMIC_LOAD_SUB ||
Opcode == ISD::ATOMIC_LOAD_AND ||
Opcode == ISD::ATOMIC_LOAD_OR ||
Opcode == ISD::ATOMIC_LOAD_XOR ||
Opcode == ISD::ATOMIC_LOAD_NAND ||
Opcode == ISD::ATOMIC_LOAD_MIN ||
Opcode == ISD::ATOMIC_LOAD_MAX ||
Opcode == ISD::ATOMIC_LOAD_UMIN ||
Opcode == ISD::ATOMIC_LOAD_UMAX ||
Opcode == ISD::ATOMIC_SWAP) &&
"Invalid Atomic Op");
EVT VT = Val.getValueType();
SDVTList VTs = getVTList(VT, MVT::Other);
FoldingSetNodeID ID;
ID.AddInteger(MemVT.getRawBits());
SDValue Ops[] = {Chain, Ptr, Val};
AddNodeIDNode(ID, Opcode, VTs, Ops, 3);
void* IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) {
cast<AtomicSDNode>(E)->refineAlignment(MMO);
return SDValue(E, 0);
}
SDNode *N = new (NodeAllocator) AtomicSDNode(Opcode, dl, VTs, MemVT, Chain,
Ptr, Val, MMO);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getMergeValues(const SDValue *Ops, unsigned NumOps,
DebugLoc dl) {
if (NumOps == 1)
return Ops[0];
SmallVector<EVT, 4> VTs;
VTs.reserve(NumOps);
for (unsigned i = 0; i < NumOps; ++i)
VTs.push_back(Ops[i].getValueType());
return getNode(ISD::MERGE_VALUES, dl, getVTList(&VTs[0], NumOps),
Ops, NumOps);
}
SDValue
SelectionDAG::getMemIntrinsicNode(unsigned Opcode, DebugLoc dl,
const EVT *VTs, unsigned NumVTs,
const SDValue *Ops, unsigned NumOps,
EVT MemVT, MachinePointerInfo PtrInfo,
unsigned Align, bool Vol,
bool ReadMem, bool WriteMem) {
return getMemIntrinsicNode(Opcode, dl, makeVTList(VTs, NumVTs), Ops, NumOps,
MemVT, PtrInfo, Align, Vol,
ReadMem, WriteMem);
}
SDValue
SelectionDAG::getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList,
const SDValue *Ops, unsigned NumOps,
EVT MemVT, MachinePointerInfo PtrInfo,
unsigned Align, bool Vol,
bool ReadMem, bool WriteMem) {
if (Align == 0) Align = getEVTAlignment(MemVT);
MachineFunction &MF = getMachineFunction();
unsigned Flags = 0;
if (WriteMem)
Flags |= MachineMemOperand::MOStore;
if (ReadMem)
Flags |= MachineMemOperand::MOLoad;
if (Vol)
Flags |= MachineMemOperand::MOVolatile;
MachineMemOperand *MMO =
MF.getMachineMemOperand(PtrInfo, Flags, MemVT.getStoreSize(), Align);
return getMemIntrinsicNode(Opcode, dl, VTList, Ops, NumOps, MemVT, MMO);
}
SDValue
SelectionDAG::getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList,
const SDValue *Ops, unsigned NumOps,
EVT MemVT, MachineMemOperand *MMO) {
assert((Opcode == ISD::INTRINSIC_VOID ||
Opcode == ISD::INTRINSIC_W_CHAIN ||
Opcode == ISD::PREFETCH ||
(Opcode <= INT_MAX &&
(int)Opcode >= ISD::FIRST_TARGET_MEMORY_OPCODE)) &&
"Opcode is not a memory-accessing opcode!");
MemIntrinsicSDNode *N;
if (VTList.VTs[VTList.NumVTs-1] != MVT::Glue) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTList, Ops, NumOps);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) {
cast<MemIntrinsicSDNode>(E)->refineAlignment(MMO);
return SDValue(E, 0);
}
N = new (NodeAllocator) MemIntrinsicSDNode(Opcode, dl, VTList, Ops, NumOps,
MemVT, MMO);
CSEMap.InsertNode(N, IP);
} else {
N = new (NodeAllocator) MemIntrinsicSDNode(Opcode, dl, VTList, Ops, NumOps,
MemVT, MMO);
}
AllNodes.push_back(N);
return SDValue(N, 0);
}
static MachinePointerInfo InferPointerInfo(SDValue Ptr, int64_t Offset = 0) {
if (const FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Ptr))
return MachinePointerInfo::getFixedStack(FI->getIndex(), Offset);
if (Ptr.getOpcode() != ISD::ADD ||
!isa<ConstantSDNode>(Ptr.getOperand(1)) ||
!isa<FrameIndexSDNode>(Ptr.getOperand(0)))
return MachinePointerInfo();
int FI = cast<FrameIndexSDNode>(Ptr.getOperand(0))->getIndex();
return MachinePointerInfo::getFixedStack(FI, Offset+
cast<ConstantSDNode>(Ptr.getOperand(1))->getSExtValue());
}
static MachinePointerInfo InferPointerInfo(SDValue Ptr, SDValue OffsetOp) {
if (ConstantSDNode *OffsetNode = dyn_cast<ConstantSDNode>(OffsetOp))
return InferPointerInfo(Ptr, OffsetNode->getSExtValue());
if (OffsetOp.getOpcode() == ISD::UNDEF)
return InferPointerInfo(Ptr);
return MachinePointerInfo();
}
SDValue
SelectionDAG::getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType,
EVT VT, DebugLoc dl, SDValue Chain,
SDValue Ptr, SDValue Offset,
MachinePointerInfo PtrInfo, EVT MemVT,
bool isVolatile, bool isNonTemporal,
unsigned Alignment, const MDNode *TBAAInfo) {
if (Alignment == 0) Alignment = getEVTAlignment(VT);
unsigned Flags = MachineMemOperand::MOLoad;
if (isVolatile)
Flags |= MachineMemOperand::MOVolatile;
if (isNonTemporal)
Flags |= MachineMemOperand::MONonTemporal;
if (PtrInfo.V == 0)
PtrInfo = InferPointerInfo(Ptr, Offset);
MachineFunction &MF = getMachineFunction();
MachineMemOperand *MMO =
MF.getMachineMemOperand(PtrInfo, Flags, MemVT.getStoreSize(), Alignment,
TBAAInfo);
return getLoad(AM, ExtType, VT, dl, Chain, Ptr, Offset, MemVT, MMO);
}
SDValue
SelectionDAG::getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType,
EVT VT, DebugLoc dl, SDValue Chain,
SDValue Ptr, SDValue Offset, EVT MemVT,
MachineMemOperand *MMO) {
if (VT == MemVT) {
ExtType = ISD::NON_EXTLOAD;
} else if (ExtType == ISD::NON_EXTLOAD) {
assert(VT == MemVT && "Non-extending load from different memory type!");
} else {
assert(MemVT.getScalarType().bitsLT(VT.getScalarType()) &&
"Should only be an extending load, not truncating!");
assert(VT.isInteger() == MemVT.isInteger() &&
"Cannot convert from FP to Int or Int -> FP!");
assert(VT.isVector() == MemVT.isVector() &&
"Cannot use trunc store to convert to or from a vector!");
assert((!VT.isVector() ||
VT.getVectorNumElements() == MemVT.getVectorNumElements()) &&
"Cannot use trunc store to change the number of vector elements!");
}
bool Indexed = AM != ISD::UNINDEXED;
assert((Indexed || Offset.getOpcode() == ISD::UNDEF) &&
"Unindexed load with an offset!");
SDVTList VTs = Indexed ?
getVTList(VT, Ptr.getValueType(), MVT::Other) : getVTList(VT, MVT::Other);
SDValue Ops[] = { Chain, Ptr, Offset };
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::LOAD, VTs, Ops, 3);
ID.AddInteger(MemVT.getRawBits());
ID.AddInteger(encodeMemSDNodeFlags(ExtType, AM, MMO->isVolatile(),
MMO->isNonTemporal()));
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) {
cast<LoadSDNode>(E)->refineAlignment(MMO);
return SDValue(E, 0);
}
SDNode *N = new (NodeAllocator) LoadSDNode(Ops, dl, VTs, AM, ExtType,
MemVT, MMO);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getLoad(EVT VT, DebugLoc dl,
SDValue Chain, SDValue Ptr,
MachinePointerInfo PtrInfo,
bool isVolatile, bool isNonTemporal,
unsigned Alignment, const MDNode *TBAAInfo) {
SDValue Undef = getUNDEF(Ptr.getValueType());
return getLoad(ISD::UNINDEXED, ISD::NON_EXTLOAD, VT, dl, Chain, Ptr, Undef,
PtrInfo, VT, isVolatile, isNonTemporal, Alignment, TBAAInfo);
}
SDValue SelectionDAG::getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, EVT VT,
SDValue Chain, SDValue Ptr,
MachinePointerInfo PtrInfo, EVT MemVT,
bool isVolatile, bool isNonTemporal,
unsigned Alignment, const MDNode *TBAAInfo) {
SDValue Undef = getUNDEF(Ptr.getValueType());
return getLoad(ISD::UNINDEXED, ExtType, VT, dl, Chain, Ptr, Undef,
PtrInfo, MemVT, isVolatile, isNonTemporal, Alignment,
TBAAInfo);
}
SDValue
SelectionDAG::getIndexedLoad(SDValue OrigLoad, DebugLoc dl, SDValue Base,
SDValue Offset, ISD::MemIndexedMode AM) {
LoadSDNode *LD = cast<LoadSDNode>(OrigLoad);
assert(LD->getOffset().getOpcode() == ISD::UNDEF &&
"Load is already a indexed load!");
return getLoad(AM, LD->getExtensionType(), OrigLoad.getValueType(), dl,
LD->getChain(), Base, Offset, LD->getPointerInfo(),
LD->getMemoryVT(),
LD->isVolatile(), LD->isNonTemporal(), LD->getAlignment());
}
SDValue SelectionDAG::getStore(SDValue Chain, DebugLoc dl, SDValue Val,
SDValue Ptr, MachinePointerInfo PtrInfo,
bool isVolatile, bool isNonTemporal,
unsigned Alignment, const MDNode *TBAAInfo) {
if (Alignment == 0) Alignment = getEVTAlignment(Val.getValueType());
unsigned Flags = MachineMemOperand::MOStore;
if (isVolatile)
Flags |= MachineMemOperand::MOVolatile;
if (isNonTemporal)
Flags |= MachineMemOperand::MONonTemporal;
if (PtrInfo.V == 0)
PtrInfo = InferPointerInfo(Ptr);
MachineFunction &MF = getMachineFunction();
MachineMemOperand *MMO =
MF.getMachineMemOperand(PtrInfo, Flags,
Val.getValueType().getStoreSize(), Alignment,
TBAAInfo);
return getStore(Chain, dl, Val, Ptr, MMO);
}
SDValue SelectionDAG::getStore(SDValue Chain, DebugLoc dl, SDValue Val,
SDValue Ptr, MachineMemOperand *MMO) {
EVT VT = Val.getValueType();
SDVTList VTs = getVTList(MVT::Other);
SDValue Undef = getUNDEF(Ptr.getValueType());
SDValue Ops[] = { Chain, Val, Ptr, Undef };
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::STORE, VTs, Ops, 4);
ID.AddInteger(VT.getRawBits());
ID.AddInteger(encodeMemSDNodeFlags(false, ISD::UNINDEXED, MMO->isVolatile(),
MMO->isNonTemporal()));
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) {
cast<StoreSDNode>(E)->refineAlignment(MMO);
return SDValue(E, 0);
}
SDNode *N = new (NodeAllocator) StoreSDNode(Ops, dl, VTs, ISD::UNINDEXED,
false, VT, MMO);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val,
SDValue Ptr, MachinePointerInfo PtrInfo,
EVT SVT,bool isVolatile, bool isNonTemporal,
unsigned Alignment,
const MDNode *TBAAInfo) {
if (Alignment == 0) Alignment = getEVTAlignment(SVT);
unsigned Flags = MachineMemOperand::MOStore;
if (isVolatile)
Flags |= MachineMemOperand::MOVolatile;
if (isNonTemporal)
Flags |= MachineMemOperand::MONonTemporal;
if (PtrInfo.V == 0)
PtrInfo = InferPointerInfo(Ptr);
MachineFunction &MF = getMachineFunction();
MachineMemOperand *MMO =
MF.getMachineMemOperand(PtrInfo, Flags, SVT.getStoreSize(), Alignment,
TBAAInfo);
return getTruncStore(Chain, dl, Val, Ptr, SVT, MMO);
}
SDValue SelectionDAG::getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val,
SDValue Ptr, EVT SVT,
MachineMemOperand *MMO) {
EVT VT = Val.getValueType();
if (VT == SVT)
return getStore(Chain, dl, Val, Ptr, MMO);
assert(SVT.getScalarType().bitsLT(VT.getScalarType()) &&
"Should only be a truncating store, not extending!");
assert(VT.isInteger() == SVT.isInteger() &&
"Can't do FP-INT conversion!");
assert(VT.isVector() == SVT.isVector() &&
"Cannot use trunc store to convert to or from a vector!");
assert((!VT.isVector() ||
VT.getVectorNumElements() == SVT.getVectorNumElements()) &&
"Cannot use trunc store to change the number of vector elements!");
SDVTList VTs = getVTList(MVT::Other);
SDValue Undef = getUNDEF(Ptr.getValueType());
SDValue Ops[] = { Chain, Val, Ptr, Undef };
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::STORE, VTs, Ops, 4);
ID.AddInteger(SVT.getRawBits());
ID.AddInteger(encodeMemSDNodeFlags(true, ISD::UNINDEXED, MMO->isVolatile(),
MMO->isNonTemporal()));
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP)) {
cast<StoreSDNode>(E)->refineAlignment(MMO);
return SDValue(E, 0);
}
SDNode *N = new (NodeAllocator) StoreSDNode(Ops, dl, VTs, ISD::UNINDEXED,
true, SVT, MMO);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue
SelectionDAG::getIndexedStore(SDValue OrigStore, DebugLoc dl, SDValue Base,
SDValue Offset, ISD::MemIndexedMode AM) {
StoreSDNode *ST = cast<StoreSDNode>(OrigStore);
assert(ST->getOffset().getOpcode() == ISD::UNDEF &&
"Store is already a indexed store!");
SDVTList VTs = getVTList(Base.getValueType(), MVT::Other);
SDValue Ops[] = { ST->getChain(), ST->getValue(), Base, Offset };
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::STORE, VTs, Ops, 4);
ID.AddInteger(ST->getMemoryVT().getRawBits());
ID.AddInteger(ST->getRawSubclassData());
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = new (NodeAllocator) StoreSDNode(Ops, dl, VTs, AM,
ST->isTruncatingStore(),
ST->getMemoryVT(),
ST->getMemOperand());
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
}
SDValue SelectionDAG::getVAArg(EVT VT, DebugLoc dl,
SDValue Chain, SDValue Ptr,
SDValue SV,
unsigned Align) {
SDValue Ops[] = { Chain, Ptr, SV, getTargetConstant(Align, MVT::i32) };
return getNode(ISD::VAARG, dl, getVTList(VT, MVT::Other), Ops, 4);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT,
const SDUse *Ops, unsigned NumOps) {
switch (NumOps) {
case 0: return getNode(Opcode, DL, VT);
case 1: return getNode(Opcode, DL, VT, Ops[0]);
case 2: return getNode(Opcode, DL, VT, Ops[0], Ops[1]);
case 3: return getNode(Opcode, DL, VT, Ops[0], Ops[1], Ops[2]);
default: break;
}
SmallVector<SDValue, 8> NewOps(Ops, Ops + NumOps);
return getNode(Opcode, DL, VT, &NewOps[0], NumOps);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, EVT VT,
const SDValue *Ops, unsigned NumOps) {
switch (NumOps) {
case 0: return getNode(Opcode, DL, VT);
case 1: return getNode(Opcode, DL, VT, Ops[0]);
case 2: return getNode(Opcode, DL, VT, Ops[0], Ops[1]);
case 3: return getNode(Opcode, DL, VT, Ops[0], Ops[1], Ops[2]);
default: break;
}
switch (Opcode) {
default: break;
case ISD::SELECT_CC: {
assert(NumOps == 5 && "SELECT_CC takes 5 operands!");
assert(Ops[0].getValueType() == Ops[1].getValueType() &&
"LHS and RHS of condition must have same type!");
assert(Ops[2].getValueType() == Ops[3].getValueType() &&
"True and False arms of SelectCC must have same type!");
assert(Ops[2].getValueType() == VT &&
"select_cc node must be of same type as true and false value!");
break;
}
case ISD::BR_CC: {
assert(NumOps == 5 && "BR_CC takes 5 operands!");
assert(Ops[2].getValueType() == Ops[3].getValueType() &&
"LHS/RHS of comparison should match types!");
break;
}
}
SDNode *N;
SDVTList VTs = getVTList(VT);
if (VT != MVT::Glue) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTs, Ops, NumOps);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
N = new (NodeAllocator) SDNode(Opcode, DL, VTs, Ops, NumOps);
CSEMap.InsertNode(N, IP);
} else {
N = new (NodeAllocator) SDNode(Opcode, DL, VTs, Ops, NumOps);
}
AllNodes.push_back(N);
#ifndef NDEBUG
VerifySDNode(N);
#endif
return SDValue(N, 0);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
const std::vector<EVT> &ResultTys,
const SDValue *Ops, unsigned NumOps) {
return getNode(Opcode, DL, getVTList(&ResultTys[0], ResultTys.size()),
Ops, NumOps);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
const EVT *VTs, unsigned NumVTs,
const SDValue *Ops, unsigned NumOps) {
if (NumVTs == 1)
return getNode(Opcode, DL, VTs[0], Ops, NumOps);
return getNode(Opcode, DL, makeVTList(VTs, NumVTs), Ops, NumOps);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList,
const SDValue *Ops, unsigned NumOps) {
if (VTList.NumVTs == 1)
return getNode(Opcode, DL, VTList.VTs[0], Ops, NumOps);
#if 0
switch (Opcode) {
case ISD::SRA_PARTS:
case ISD::SRL_PARTS:
case ISD::SHL_PARTS:
if (N3.getOpcode() == ISD::SIGN_EXTEND_INREG &&
cast<VTSDNode>(N3.getOperand(1))->getVT() != MVT::i1)
return getNode(Opcode, DL, VT, N1, N2, N3.getOperand(0));
else if (N3.getOpcode() == ISD::AND)
if (ConstantSDNode *AndRHS = dyn_cast<ConstantSDNode>(N3.getOperand(1))) {
unsigned NumBits = VT.getScalarType().getSizeInBits()*2;
if ((AndRHS->getValue() & (NumBits-1)) == NumBits-1)
return getNode(Opcode, DL, VT, N1, N2, N3.getOperand(0));
}
break;
}
#endif
SDNode *N;
if (VTList.VTs[VTList.NumVTs-1] != MVT::Glue) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTList, Ops, NumOps);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
if (NumOps == 1) {
N = new (NodeAllocator) UnarySDNode(Opcode, DL, VTList, Ops[0]);
} else if (NumOps == 2) {
N = new (NodeAllocator) BinarySDNode(Opcode, DL, VTList, Ops[0], Ops[1]);
} else if (NumOps == 3) {
N = new (NodeAllocator) TernarySDNode(Opcode, DL, VTList, Ops[0], Ops[1],
Ops[2]);
} else {
N = new (NodeAllocator) SDNode(Opcode, DL, VTList, Ops, NumOps);
}
CSEMap.InsertNode(N, IP);
} else {
if (NumOps == 1) {
N = new (NodeAllocator) UnarySDNode(Opcode, DL, VTList, Ops[0]);
} else if (NumOps == 2) {
N = new (NodeAllocator) BinarySDNode(Opcode, DL, VTList, Ops[0], Ops[1]);
} else if (NumOps == 3) {
N = new (NodeAllocator) TernarySDNode(Opcode, DL, VTList, Ops[0], Ops[1],
Ops[2]);
} else {
N = new (NodeAllocator) SDNode(Opcode, DL, VTList, Ops, NumOps);
}
}
AllNodes.push_back(N);
#ifndef NDEBUG
VerifySDNode(N);
#endif
return SDValue(N, 0);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList) {
return getNode(Opcode, DL, VTList, 0, 0);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList,
SDValue N1) {
SDValue Ops[] = { N1 };
return getNode(Opcode, DL, VTList, Ops, 1);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList,
SDValue N1, SDValue N2) {
SDValue Ops[] = { N1, N2 };
return getNode(Opcode, DL, VTList, Ops, 2);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList,
SDValue N1, SDValue N2, SDValue N3) {
SDValue Ops[] = { N1, N2, N3 };
return getNode(Opcode, DL, VTList, Ops, 3);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList,
SDValue N1, SDValue N2, SDValue N3,
SDValue N4) {
SDValue Ops[] = { N1, N2, N3, N4 };
return getNode(Opcode, DL, VTList, Ops, 4);
}
SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL, SDVTList VTList,
SDValue N1, SDValue N2, SDValue N3,
SDValue N4, SDValue N5) {
SDValue Ops[] = { N1, N2, N3, N4, N5 };
return getNode(Opcode, DL, VTList, Ops, 5);
}
SDVTList SelectionDAG::getVTList(EVT VT) {
return makeVTList(SDNode::getValueTypeList(VT), 1);
}
SDVTList SelectionDAG::getVTList(EVT VT1, EVT VT2) {
for (std::vector<SDVTList>::reverse_iterator I = VTList.rbegin(),
E = VTList.rend(); I != E; ++I)
if (I->NumVTs == 2 && I->VTs[0] == VT1 && I->VTs[1] == VT2)
return *I;
EVT *Array = Allocator.Allocate<EVT>(2);
Array[0] = VT1;
Array[1] = VT2;
SDVTList Result = makeVTList(Array, 2);
VTList.push_back(Result);
return Result;
}
SDVTList SelectionDAG::getVTList(EVT VT1, EVT VT2, EVT VT3) {
for (std::vector<SDVTList>::reverse_iterator I = VTList.rbegin(),
E = VTList.rend(); I != E; ++I)
if (I->NumVTs == 3 && I->VTs[0] == VT1 && I->VTs[1] == VT2 &&
I->VTs[2] == VT3)
return *I;
EVT *Array = Allocator.Allocate<EVT>(3);
Array[0] = VT1;
Array[1] = VT2;
Array[2] = VT3;
SDVTList Result = makeVTList(Array, 3);
VTList.push_back(Result);
return Result;
}
SDVTList SelectionDAG::getVTList(EVT VT1, EVT VT2, EVT VT3, EVT VT4) {
for (std::vector<SDVTList>::reverse_iterator I = VTList.rbegin(),
E = VTList.rend(); I != E; ++I)
if (I->NumVTs == 4 && I->VTs[0] == VT1 && I->VTs[1] == VT2 &&
I->VTs[2] == VT3 && I->VTs[3] == VT4)
return *I;
EVT *Array = Allocator.Allocate<EVT>(4);
Array[0] = VT1;
Array[1] = VT2;
Array[2] = VT3;
Array[3] = VT4;
SDVTList Result = makeVTList(Array, 4);
VTList.push_back(Result);
return Result;
}
SDVTList SelectionDAG::getVTList(const EVT *VTs, unsigned NumVTs) {
switch (NumVTs) {
case 0: llvm_unreachable("Cannot have nodes without results!");
case 1: return getVTList(VTs[0]);
case 2: return getVTList(VTs[0], VTs[1]);
case 3: return getVTList(VTs[0], VTs[1], VTs[2]);
case 4: return getVTList(VTs[0], VTs[1], VTs[2], VTs[3]);
default: break;
}
for (std::vector<SDVTList>::reverse_iterator I = VTList.rbegin(),
E = VTList.rend(); I != E; ++I) {
if (I->NumVTs != NumVTs || VTs[0] != I->VTs[0] || VTs[1] != I->VTs[1])
continue;
bool NoMatch = false;
for (unsigned i = 2; i != NumVTs; ++i)
if (VTs[i] != I->VTs[i]) {
NoMatch = true;
break;
}
if (!NoMatch)
return *I;
}
EVT *Array = Allocator.Allocate<EVT>(NumVTs);
std::copy(VTs, VTs+NumVTs, Array);
SDVTList Result = makeVTList(Array, NumVTs);
VTList.push_back(Result);
return Result;
}
SDNode *SelectionDAG::UpdateNodeOperands(SDNode *N, SDValue Op) {
assert(N->getNumOperands() == 1 && "Update with wrong number of operands");
if (Op == N->getOperand(0)) return N;
void *InsertPos = 0;
if (SDNode *Existing = FindModifiedNodeSlot(N, Op, InsertPos))
return Existing;
if (InsertPos)
if (!RemoveNodeFromCSEMaps(N))
InsertPos = 0;
N->OperandList[0].set(Op);
if (InsertPos) CSEMap.InsertNode(N, InsertPos);
return N;
}
SDNode *SelectionDAG::UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2) {
assert(N->getNumOperands() == 2 && "Update with wrong number of operands");
if (Op1 == N->getOperand(0) && Op2 == N->getOperand(1))
return N;
void *InsertPos = 0;
if (SDNode *Existing = FindModifiedNodeSlot(N, Op1, Op2, InsertPos))
return Existing;
if (InsertPos)
if (!RemoveNodeFromCSEMaps(N))
InsertPos = 0;
if (N->OperandList[0] != Op1)
N->OperandList[0].set(Op1);
if (N->OperandList[1] != Op2)
N->OperandList[1].set(Op2);
if (InsertPos) CSEMap.InsertNode(N, InsertPos);
return N;
}
SDNode *SelectionDAG::
UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, SDValue Op3) {
SDValue Ops[] = { Op1, Op2, Op3 };
return UpdateNodeOperands(N, Ops, 3);
}
SDNode *SelectionDAG::
UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2,
SDValue Op3, SDValue Op4) {
SDValue Ops[] = { Op1, Op2, Op3, Op4 };
return UpdateNodeOperands(N, Ops, 4);
}
SDNode *SelectionDAG::
UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2,
SDValue Op3, SDValue Op4, SDValue Op5) {
SDValue Ops[] = { Op1, Op2, Op3, Op4, Op5 };
return UpdateNodeOperands(N, Ops, 5);
}
SDNode *SelectionDAG::
UpdateNodeOperands(SDNode *N, const SDValue *Ops, unsigned NumOps) {
assert(N->getNumOperands() == NumOps &&
"Update with wrong number of operands");
bool AnyChange = false;
for (unsigned i = 0; i != NumOps; ++i) {
if (Ops[i] != N->getOperand(i)) {
AnyChange = true;
break;
}
}
if (!AnyChange) return N;
void *InsertPos = 0;
if (SDNode *Existing = FindModifiedNodeSlot(N, Ops, NumOps, InsertPos))
return Existing;
if (InsertPos)
if (!RemoveNodeFromCSEMaps(N))
InsertPos = 0;
for (unsigned i = 0; i != NumOps; ++i)
if (N->OperandList[i] != Ops[i])
N->OperandList[i].set(Ops[i]);
if (InsertPos) CSEMap.InsertNode(N, InsertPos);
return N;
}
void SDNode::DropOperands() {
for (op_iterator I = op_begin(), E = op_end(); I != E; ) {
SDUse &Use = *I++;
Use.set(SDValue());
}
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT) {
SDVTList VTs = getVTList(VT);
return SelectNodeTo(N, MachineOpc, VTs, 0, 0);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT, SDValue Op1) {
SDVTList VTs = getVTList(VT);
SDValue Ops[] = { Op1 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 1);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT, SDValue Op1,
SDValue Op2) {
SDVTList VTs = getVTList(VT);
SDValue Ops[] = { Op1, Op2 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 2);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT, SDValue Op1,
SDValue Op2, SDValue Op3) {
SDVTList VTs = getVTList(VT);
SDValue Ops[] = { Op1, Op2, Op3 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 3);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT, const SDValue *Ops,
unsigned NumOps) {
SDVTList VTs = getVTList(VT);
return SelectNodeTo(N, MachineOpc, VTs, Ops, NumOps);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2, const SDValue *Ops,
unsigned NumOps) {
SDVTList VTs = getVTList(VT1, VT2);
return SelectNodeTo(N, MachineOpc, VTs, Ops, NumOps);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2) {
SDVTList VTs = getVTList(VT1, VT2);
return SelectNodeTo(N, MachineOpc, VTs, (SDValue *)0, 0);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2, EVT VT3,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(VT1, VT2, VT3);
return SelectNodeTo(N, MachineOpc, VTs, Ops, NumOps);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2, EVT VT3, EVT VT4,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(VT1, VT2, VT3, VT4);
return SelectNodeTo(N, MachineOpc, VTs, Ops, NumOps);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2,
SDValue Op1) {
SDVTList VTs = getVTList(VT1, VT2);
SDValue Ops[] = { Op1 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 1);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2,
SDValue Op1, SDValue Op2) {
SDVTList VTs = getVTList(VT1, VT2);
SDValue Ops[] = { Op1, Op2 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 2);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2,
SDValue Op1, SDValue Op2,
SDValue Op3) {
SDVTList VTs = getVTList(VT1, VT2);
SDValue Ops[] = { Op1, Op2, Op3 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 3);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
EVT VT1, EVT VT2, EVT VT3,
SDValue Op1, SDValue Op2,
SDValue Op3) {
SDVTList VTs = getVTList(VT1, VT2, VT3);
SDValue Ops[] = { Op1, Op2, Op3 };
return SelectNodeTo(N, MachineOpc, VTs, Ops, 3);
}
SDNode *SelectionDAG::SelectNodeTo(SDNode *N, unsigned MachineOpc,
SDVTList VTs, const SDValue *Ops,
unsigned NumOps) {
N = MorphNodeTo(N, ~MachineOpc, VTs, Ops, NumOps);
N->setNodeId(-1);
return N;
}
SDNode *SelectionDAG::MorphNodeTo(SDNode *N, unsigned Opc,
SDVTList VTs, const SDValue *Ops,
unsigned NumOps) {
void *IP = 0;
if (VTs.VTs[VTs.NumVTs-1] != MVT::Glue) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, VTs, Ops, NumOps);
if (SDNode *ON = CSEMap.FindNodeOrInsertPos(ID, IP))
return ON;
}
if (!RemoveNodeFromCSEMaps(N))
IP = 0;
N->NodeType = Opc;
N->ValueList = VTs.VTs;
N->NumValues = VTs.NumVTs;
SmallPtrSet<SDNode*, 16> DeadNodeSet;
for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ) {
SDUse &Use = *I++;
SDNode *Used = Use.getNode();
Use.set(SDValue());
if (Used->use_empty())
DeadNodeSet.insert(Used);
}
if (MachineSDNode *MN = dyn_cast<MachineSDNode>(N)) {
MN->setMemRefs(0, 0);
if (NumOps > MN->NumOperands || !MN->OperandsNeedDelete) {
if (MN->OperandsNeedDelete)
delete[] MN->OperandList;
if (NumOps > array_lengthof(MN->LocalOperands))
MN->InitOperands(OperandAllocator.Allocate<SDUse>(NumOps),
Ops, NumOps);
else
MN->InitOperands(MN->LocalOperands, Ops, NumOps);
MN->OperandsNeedDelete = false;
} else
MN->InitOperands(MN->OperandList, Ops, NumOps);
} else {
if (NumOps > N->NumOperands) {
if (N->OperandsNeedDelete)
delete[] N->OperandList;
N->InitOperands(new SDUse[NumOps], Ops, NumOps);
N->OperandsNeedDelete = true;
} else
N->InitOperands(N->OperandList, Ops, NumOps);
}
if (!DeadNodeSet.empty()) {
SmallVector<SDNode *, 16> DeadNodes;
for (SmallPtrSet<SDNode *, 16>::iterator I = DeadNodeSet.begin(),
E = DeadNodeSet.end(); I != E; ++I)
if ((*I)->use_empty())
DeadNodes.push_back(*I);
RemoveDeadNodes(DeadNodes);
}
if (IP)
CSEMap.InsertNode(N, IP); return N;
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT) {
SDVTList VTs = getVTList(VT);
return getMachineNode(Opcode, dl, VTs, 0, 0);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, SDValue Op1) {
SDVTList VTs = getVTList(VT);
SDValue Ops[] = { Op1 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT,
SDValue Op1, SDValue Op2) {
SDVTList VTs = getVTList(VT);
SDValue Ops[] = { Op1, Op2 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT,
SDValue Op1, SDValue Op2, SDValue Op3) {
SDVTList VTs = getVTList(VT);
SDValue Ops[] = { Op1, Op2, Op3 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(VT);
return getMachineNode(Opcode, dl, VTs, Ops, NumOps);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2) {
SDVTList VTs = getVTList(VT1, VT2);
return getMachineNode(Opcode, dl, VTs, 0, 0);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2, SDValue Op1) {
SDVTList VTs = getVTList(VT1, VT2);
SDValue Ops[] = { Op1 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2, SDValue Op1, SDValue Op2) {
SDVTList VTs = getVTList(VT1, VT2);
SDValue Ops[] = { Op1, Op2 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2, SDValue Op1,
SDValue Op2, SDValue Op3) {
SDVTList VTs = getVTList(VT1, VT2);
SDValue Ops[] = { Op1, Op2, Op3 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(VT1, VT2);
return getMachineNode(Opcode, dl, VTs, Ops, NumOps);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2, EVT VT3,
SDValue Op1, SDValue Op2) {
SDVTList VTs = getVTList(VT1, VT2, VT3);
SDValue Ops[] = { Op1, Op2 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2, EVT VT3,
SDValue Op1, SDValue Op2, SDValue Op3) {
SDVTList VTs = getVTList(VT1, VT2, VT3);
SDValue Ops[] = { Op1, Op2, Op3 };
return getMachineNode(Opcode, dl, VTs, Ops, array_lengthof(Ops));
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
EVT VT1, EVT VT2, EVT VT3,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(VT1, VT2, VT3);
return getMachineNode(Opcode, dl, VTs, Ops, NumOps);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1,
EVT VT2, EVT VT3, EVT VT4,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(VT1, VT2, VT3, VT4);
return getMachineNode(Opcode, dl, VTs, Ops, NumOps);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc dl,
const std::vector<EVT> &ResultTys,
const SDValue *Ops, unsigned NumOps) {
SDVTList VTs = getVTList(&ResultTys[0], ResultTys.size());
return getMachineNode(Opcode, dl, VTs, Ops, NumOps);
}
MachineSDNode *
SelectionDAG::getMachineNode(unsigned Opcode, DebugLoc DL, SDVTList VTs,
const SDValue *Ops, unsigned NumOps) {
bool DoCSE = VTs.VTs[VTs.NumVTs-1] != MVT::Glue;
MachineSDNode *N;
void *IP = 0;
if (DoCSE) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, ~Opcode, VTs, Ops, NumOps);
IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return cast<MachineSDNode>(E);
}
N = new (NodeAllocator) MachineSDNode(~Opcode, DL, VTs);
if (NumOps > array_lengthof(N->LocalOperands))
N->InitOperands(OperandAllocator.Allocate<SDUse>(NumOps),
Ops, NumOps);
else
N->InitOperands(N->LocalOperands, Ops, NumOps);
N->OperandsNeedDelete = false;
if (DoCSE)
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
#ifndef NDEBUG
VerifyMachineNode(N);
#endif
return N;
}
SDValue
SelectionDAG::getTargetExtractSubreg(int SRIdx, DebugLoc DL, EVT VT,
SDValue Operand) {
SDValue SRIdxVal = getTargetConstant(SRIdx, MVT::i32);
SDNode *Subreg = getMachineNode(TargetOpcode::EXTRACT_SUBREG, DL,
VT, Operand, SRIdxVal);
return SDValue(Subreg, 0);
}
SDValue
SelectionDAG::getTargetInsertSubreg(int SRIdx, DebugLoc DL, EVT VT,
SDValue Operand, SDValue Subreg) {
SDValue SRIdxVal = getTargetConstant(SRIdx, MVT::i32);
SDNode *Result = getMachineNode(TargetOpcode::INSERT_SUBREG, DL,
VT, Operand, Subreg, SRIdxVal);
return SDValue(Result, 0);
}
SDNode *SelectionDAG::getNodeIfExists(unsigned Opcode, SDVTList VTList,
const SDValue *Ops, unsigned NumOps) {
if (VTList.VTs[VTList.NumVTs-1] != MVT::Glue) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opcode, VTList, Ops, NumOps);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return E;
}
return NULL;
}
SDDbgValue *
SelectionDAG::getDbgValue(MDNode *MDPtr, SDNode *N, unsigned R, uint64_t Off,
DebugLoc DL, unsigned O) {
return new (Allocator) SDDbgValue(MDPtr, N, R, Off, DL, O);
}
SDDbgValue *
SelectionDAG::getDbgValue(MDNode *MDPtr, const Value *C, uint64_t Off,
DebugLoc DL, unsigned O) {
return new (Allocator) SDDbgValue(MDPtr, C, Off, DL, O);
}
SDDbgValue *
SelectionDAG::getDbgValue(MDNode *MDPtr, unsigned FI, uint64_t Off,
DebugLoc DL, unsigned O) {
return new (Allocator) SDDbgValue(MDPtr, FI, Off, DL, O);
}
namespace {
class RAUWUpdateListener : public SelectionDAG::DAGUpdateListener {
SelectionDAG::DAGUpdateListener *DownLink;
SDNode::use_iterator &UI;
SDNode::use_iterator &UE;
virtual void NodeDeleted(SDNode *N, SDNode *E) {
while (UI != UE && N == *UI)
++UI;
if (DownLink) DownLink->NodeDeleted(N, E);
}
virtual void NodeUpdated(SDNode *N) {
if (DownLink) DownLink->NodeUpdated(N);
}
public:
RAUWUpdateListener(SelectionDAG::DAGUpdateListener *dl,
SDNode::use_iterator &ui,
SDNode::use_iterator &ue)
: DownLink(dl), UI(ui), UE(ue) {}
};
}
void SelectionDAG::ReplaceAllUsesWith(SDValue FromN, SDValue To,
DAGUpdateListener *UpdateListener) {
SDNode *From = FromN.getNode();
assert(From->getNumValues() == 1 && FromN.getResNo() == 0 &&
"Cannot replace with this method!");
assert(From != To.getNode() && "Cannot replace uses of with self");
SDNode::use_iterator UI = From->use_begin(), UE = From->use_end();
RAUWUpdateListener Listener(UpdateListener, UI, UE);
while (UI != UE) {
SDNode *User = *UI;
RemoveNodeFromCSEMaps(User);
do {
SDUse &Use = UI.getUse();
++UI;
Use.set(To);
} while (UI != UE && *UI == User);
AddModifiedNodeToCSEMaps(User, &Listener);
}
}
void SelectionDAG::ReplaceAllUsesWith(SDNode *From, SDNode *To,
DAGUpdateListener *UpdateListener) {
#ifndef NDEBUG
for (unsigned i = 0, e = From->getNumValues(); i != e; ++i)
assert((!From->hasAnyUseOfValue(i) ||
From->getValueType(i) == To->getValueType(i)) &&
"Cannot use this version of ReplaceAllUsesWith!");
#endif
if (From == To)
return;
SDNode::use_iterator UI = From->use_begin(), UE = From->use_end();
RAUWUpdateListener Listener(UpdateListener, UI, UE);
while (UI != UE) {
SDNode *User = *UI;
RemoveNodeFromCSEMaps(User);
do {
SDUse &Use = UI.getUse();
++UI;
Use.setNode(To);
} while (UI != UE && *UI == User);
AddModifiedNodeToCSEMaps(User, &Listener);
}
}
void SelectionDAG::ReplaceAllUsesWith(SDNode *From,
const SDValue *To,
DAGUpdateListener *UpdateListener) {
if (From->getNumValues() == 1) return ReplaceAllUsesWith(SDValue(From, 0), To[0], UpdateListener);
SDNode::use_iterator UI = From->use_begin(), UE = From->use_end();
RAUWUpdateListener Listener(UpdateListener, UI, UE);
while (UI != UE) {
SDNode *User = *UI;
RemoveNodeFromCSEMaps(User);
do {
SDUse &Use = UI.getUse();
const SDValue &ToOp = To[Use.getResNo()];
++UI;
Use.set(ToOp);
} while (UI != UE && *UI == User);
AddModifiedNodeToCSEMaps(User, &Listener);
}
}
void SelectionDAG::ReplaceAllUsesOfValueWith(SDValue From, SDValue To,
DAGUpdateListener *UpdateListener){
if (From == To) return;
if (From.getNode()->getNumValues() == 1) {
ReplaceAllUsesWith(From, To, UpdateListener);
return;
}
SDNode::use_iterator UI = From.getNode()->use_begin(),
UE = From.getNode()->use_end();
RAUWUpdateListener Listener(UpdateListener, UI, UE);
while (UI != UE) {
SDNode *User = *UI;
bool UserRemovedFromCSEMaps = false;
do {
SDUse &Use = UI.getUse();
if (Use.getResNo() != From.getResNo()) {
++UI;
continue;
}
if (!UserRemovedFromCSEMaps) {
RemoveNodeFromCSEMaps(User);
UserRemovedFromCSEMaps = true;
}
++UI;
Use.set(To);
} while (UI != UE && *UI == User);
if (!UserRemovedFromCSEMaps)
continue;
AddModifiedNodeToCSEMaps(User, &Listener);
}
}
namespace {
struct UseMemo {
SDNode *User;
unsigned Index;
SDUse *Use;
};
bool operator<(const UseMemo &L, const UseMemo &R) {
return (intptr_t)L.User < (intptr_t)R.User;
}
}
void SelectionDAG::ReplaceAllUsesOfValuesWith(const SDValue *From,
const SDValue *To,
unsigned Num,
DAGUpdateListener *UpdateListener){
if (Num == 1)
return ReplaceAllUsesOfValueWith(*From, *To, UpdateListener);
SmallVector<UseMemo, 4> Uses;
for (unsigned i = 0; i != Num; ++i) {
unsigned FromResNo = From[i].getResNo();
SDNode *FromNode = From[i].getNode();
for (SDNode::use_iterator UI = FromNode->use_begin(),
E = FromNode->use_end(); UI != E; ++UI) {
SDUse &Use = UI.getUse();
if (Use.getResNo() == FromResNo) {
UseMemo Memo = { *UI, i, &Use };
Uses.push_back(Memo);
}
}
}
std::sort(Uses.begin(), Uses.end());
for (unsigned UseIndex = 0, UseIndexEnd = Uses.size();
UseIndex != UseIndexEnd; ) {
SDNode *User = Uses[UseIndex].User;
RemoveNodeFromCSEMaps(User);
do {
unsigned i = Uses[UseIndex].Index;
SDUse &Use = *Uses[UseIndex].Use;
++UseIndex;
Use.set(To[i]);
} while (UseIndex != UseIndexEnd && Uses[UseIndex].User == User);
AddModifiedNodeToCSEMaps(User, UpdateListener);
}
}
unsigned SelectionDAG::AssignTopologicalOrder() {
unsigned DAGSize = 0;
allnodes_iterator SortedPos = allnodes_begin();
for (allnodes_iterator I = allnodes_begin(),E = allnodes_end(); I != E; ) {
SDNode *N = I++;
checkForCycles(N);
unsigned Degree = N->getNumOperands();
if (Degree == 0) {
N->setNodeId(DAGSize++);
allnodes_iterator Q = N;
if (Q != SortedPos)
SortedPos = AllNodes.insert(SortedPos, AllNodes.remove(Q));
assert(SortedPos != AllNodes.end() && "Overran node list");
++SortedPos;
} else {
N->setNodeId(Degree);
}
}
for (allnodes_iterator I = allnodes_begin(),E = allnodes_end(); I != E; ++I) {
SDNode *N = I;
checkForCycles(N);
for (SDNode::use_iterator UI = N->use_begin(), UE = N->use_end();
UI != UE; ++UI) {
SDNode *P = *UI;
unsigned Degree = P->getNodeId();
assert(Degree != 0 && "Invalid node degree");
--Degree;
if (Degree == 0) {
P->setNodeId(DAGSize++);
if (P != SortedPos)
SortedPos = AllNodes.insert(SortedPos, AllNodes.remove(P));
assert(SortedPos != AllNodes.end() && "Overran node list");
++SortedPos;
} else {
P->setNodeId(Degree);
}
}
if (I == SortedPos) {
#ifndef NDEBUG
SDNode *S = ++I;
dbgs() << "Overran sorted position:\n";
S->dumprFull();
#endif
llvm_unreachable(0);
}
}
assert(SortedPos == AllNodes.end() &&
"Topological sort incomplete!");
assert(AllNodes.front().getOpcode() == ISD::EntryToken &&
"First node in topological sort is not the entry token!");
assert(AllNodes.front().getNodeId() == 0 &&
"First node in topological sort has non-zero id!");
assert(AllNodes.front().getNumOperands() == 0 &&
"First node in topological sort has operands!");
assert(AllNodes.back().getNodeId() == (int)DAGSize-1 &&
"Last node in topologic sort has unexpected id!");
assert(AllNodes.back().use_empty() &&
"Last node in topologic sort has users!");
assert(DAGSize == allnodes_size() && "Node count mismatch!");
return DAGSize;
}
void SelectionDAG::AssignOrdering(const SDNode *SD, unsigned Order) {
assert(SD && "Trying to assign an order to a null node!");
Ordering->add(SD, Order);
}
unsigned SelectionDAG::GetOrdering(const SDNode *SD) const {
assert(SD && "Trying to get the order of a null node!");
return Ordering->getOrder(SD);
}
void SelectionDAG::AddDbgValue(SDDbgValue *DB, SDNode *SD, bool isParameter) {
DbgInfo->add(DB, SD, isParameter);
if (SD)
SD->setHasDebugValue(true);
}
void SelectionDAG::TransferDbgValues(SDValue From, SDValue To) {
if (From == To || !From.getNode()->getHasDebugValue())
return;
SDNode *FromNode = From.getNode();
SDNode *ToNode = To.getNode();
SmallVector<SDDbgValue *, 2> &DVs = GetDbgValues(FromNode);
SmallVector<SDDbgValue *, 2> ClonedDVs;
for (SmallVector<SDDbgValue *, 2>::iterator I = DVs.begin(), E = DVs.end();
I != E; ++I) {
SDDbgValue *Dbg = *I;
if (Dbg->getKind() == SDDbgValue::SDNODE) {
SDDbgValue *Clone = getDbgValue(Dbg->getMDPtr(), ToNode, To.getResNo(),
Dbg->getOffset(), Dbg->getDebugLoc(),
Dbg->getOrder());
ClonedDVs.push_back(Clone);
}
}
for (SmallVector<SDDbgValue *, 2>::iterator I = ClonedDVs.begin(),
E = ClonedDVs.end(); I != E; ++I)
AddDbgValue(*I, ToNode, false);
}
HandleSDNode::~HandleSDNode() {
DropOperands();
}
GlobalAddressSDNode::GlobalAddressSDNode(unsigned Opc, DebugLoc DL,
const GlobalValue *GA,
EVT VT, int64_t o, unsigned char TF)
: SDNode(Opc, DL, getSDVTList(VT)), Offset(o), TargetFlags(TF) {
TheGlobal = GA;
}
MemSDNode::MemSDNode(unsigned Opc, DebugLoc dl, SDVTList VTs, EVT memvt,
MachineMemOperand *mmo)
: SDNode(Opc, dl, VTs), MemoryVT(memvt), MMO(mmo) {
SubclassData = encodeMemSDNodeFlags(0, ISD::UNINDEXED, MMO->isVolatile(),
MMO->isNonTemporal());
assert(isVolatile() == MMO->isVolatile() && "Volatile encoding error!");
assert(isNonTemporal() == MMO->isNonTemporal() &&
"Non-temporal encoding error!");
assert(memvt.getStoreSize() == MMO->getSize() && "Size mismatch!");
}
MemSDNode::MemSDNode(unsigned Opc, DebugLoc dl, SDVTList VTs,
const SDValue *Ops, unsigned NumOps, EVT memvt,
MachineMemOperand *mmo)
: SDNode(Opc, dl, VTs, Ops, NumOps),
MemoryVT(memvt), MMO(mmo) {
SubclassData = encodeMemSDNodeFlags(0, ISD::UNINDEXED, MMO->isVolatile(),
MMO->isNonTemporal());
assert(isVolatile() == MMO->isVolatile() && "Volatile encoding error!");
assert(memvt.getStoreSize() == MMO->getSize() && "Size mismatch!");
}
void SDNode::Profile(FoldingSetNodeID &ID) const {
AddNodeIDNode(ID, this);
}
namespace {
struct EVTArray {
std::vector<EVT> VTs;
EVTArray() {
VTs.reserve(MVT::LAST_VALUETYPE);
for (unsigned i = 0; i < MVT::LAST_VALUETYPE; ++i)
VTs.push_back(MVT((MVT::SimpleValueType)i));
}
};
}
static ManagedStatic<std::set<EVT, EVT::compareRawBits> > EVTs;
static ManagedStatic<EVTArray> SimpleVTArray;
static ManagedStatic<sys::SmartMutex<true> > VTMutex;
const EVT *SDNode::getValueTypeList(EVT VT) {
if (VT.isExtended()) {
sys::SmartScopedLock<true> Lock(*VTMutex);
return &(*EVTs->insert(VT).first);
} else {
assert(VT.getSimpleVT() < MVT::LAST_VALUETYPE &&
"Value type out of range!");
return &SimpleVTArray->VTs[VT.getSimpleVT().SimpleTy];
}
}
bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) const {
assert(Value < getNumValues() && "Bad value!");
for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) {
if (UI.getUse().getResNo() == Value) {
if (NUses == 0)
return false;
--NUses;
}
}
return NUses == 0;
}
bool SDNode::hasAnyUseOfValue(unsigned Value) const {
assert(Value < getNumValues() && "Bad value!");
for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI)
if (UI.getUse().getResNo() == Value)
return true;
return false;
}
bool SDNode::isOnlyUserOf(SDNode *N) const {
bool Seen = false;
for (SDNode::use_iterator I = N->use_begin(), E = N->use_end(); I != E; ++I) {
SDNode *User = *I;
if (User == this)
Seen = true;
else
return false;
}
return Seen;
}
bool SDValue::isOperandOf(SDNode *N) const {
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
if (*this == N->getOperand(i))
return true;
return false;
}
bool SDNode::isOperandOf(SDNode *N) const {
for (unsigned i = 0, e = N->NumOperands; i != e; ++i)
if (this == N->OperandList[i].getNode())
return true;
return false;
}
bool SDValue::reachesChainWithoutSideEffects(SDValue Dest,
unsigned Depth) const {
if (*this == Dest) return true;
if (Depth == 0) return false;
if (getOpcode() == ISD::TokenFactor) {
for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
if (!getOperand(i).reachesChainWithoutSideEffects(Dest, Depth-1))
return false;
return true;
}
if (LoadSDNode *Ld = dyn_cast<LoadSDNode>(*this)) {
if (!Ld->isVolatile())
return Ld->getChain().reachesChainWithoutSideEffects(Dest, Depth-1);
}
return false;
}
bool SDNode::isPredecessorOf(SDNode *N) const {
SmallPtrSet<SDNode *, 32> Visited;
SmallVector<SDNode *, 16> Worklist;
Worklist.push_back(N);
do {
N = Worklist.pop_back_val();
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
SDNode *Op = N->getOperand(i).getNode();
if (Op == this)
return true;
if (Visited.insert(Op))
Worklist.push_back(Op);
}
} while (!Worklist.empty());
return false;
}
uint64_t SDNode::getConstantOperandVal(unsigned Num) const {
assert(Num < NumOperands && "Invalid child # of SDNode!");
return cast<ConstantSDNode>(OperandList[Num])->getZExtValue();
}
std::string SDNode::getOperationName(const SelectionDAG *G) const {
switch (getOpcode()) {
default:
if (getOpcode() < ISD::BUILTIN_OP_END)
return "<<Unknown DAG Node>>";
if (isMachineOpcode()) {
if (G)
if (const TargetInstrInfo *TII = G->getTarget().getInstrInfo())
if (getMachineOpcode() < TII->getNumOpcodes())
return TII->get(getMachineOpcode()).getName();
return "<<Unknown Machine Node #" + utostr(getOpcode()) + ">>";
}
if (G) {
const TargetLowering &TLI = G->getTargetLoweringInfo();
const char *Name = TLI.getTargetNodeName(getOpcode());
if (Name) return Name;
return "<<Unknown Target Node #" + utostr(getOpcode()) + ">>";
}
return "<<Unknown Node #" + utostr(getOpcode()) + ">>";
#ifndef NDEBUG
case ISD::DELETED_NODE:
return "<<Deleted Node!>>";
#endif
case ISD::PREFETCH: return "Prefetch";
case ISD::MEMBARRIER: return "MemBarrier";
case ISD::ATOMIC_CMP_SWAP: return "AtomicCmpSwap";
case ISD::ATOMIC_SWAP: return "AtomicSwap";
case ISD::ATOMIC_LOAD_ADD: return "AtomicLoadAdd";
case ISD::ATOMIC_LOAD_SUB: return "AtomicLoadSub";
case ISD::ATOMIC_LOAD_AND: return "AtomicLoadAnd";
case ISD::ATOMIC_LOAD_OR: return "AtomicLoadOr";
case ISD::ATOMIC_LOAD_XOR: return "AtomicLoadXor";
case ISD::ATOMIC_LOAD_NAND: return "AtomicLoadNand";
case ISD::ATOMIC_LOAD_MIN: return "AtomicLoadMin";
case ISD::ATOMIC_LOAD_MAX: return "AtomicLoadMax";
case ISD::ATOMIC_LOAD_UMIN: return "AtomicLoadUMin";
case ISD::ATOMIC_LOAD_UMAX: return "AtomicLoadUMax";
case ISD::PCMARKER: return "PCMarker";
case ISD::READCYCLECOUNTER: return "ReadCycleCounter";
case ISD::SRCVALUE: return "SrcValue";
case ISD::MDNODE_SDNODE: return "MDNode";
case ISD::EntryToken: return "EntryToken";
case ISD::TokenFactor: return "TokenFactor";
case ISD::AssertSext: return "AssertSext";
case ISD::AssertZext: return "AssertZext";
case ISD::BasicBlock: return "BasicBlock";
case ISD::VALUETYPE: return "ValueType";
case ISD::Register: return "Register";
case ISD::Constant: return "Constant";
case ISD::ConstantFP: return "ConstantFP";
case ISD::GlobalAddress: return "GlobalAddress";
case ISD::GlobalTLSAddress: return "GlobalTLSAddress";
case ISD::FrameIndex: return "FrameIndex";
case ISD::JumpTable: return "JumpTable";
case ISD::GLOBAL_OFFSET_TABLE: return "GLOBAL_OFFSET_TABLE";
case ISD::RETURNADDR: return "RETURNADDR";
case ISD::FRAMEADDR: return "FRAMEADDR";
case ISD::FRAME_TO_ARGS_OFFSET: return "FRAME_TO_ARGS_OFFSET";
case ISD::EXCEPTIONADDR: return "EXCEPTIONADDR";
case ISD::LSDAADDR: return "LSDAADDR";
case ISD::EHSELECTION: return "EHSELECTION";
case ISD::EH_RETURN: return "EH_RETURN";
case ISD::EH_SJLJ_SETJMP: return "EH_SJLJ_SETJMP";
case ISD::EH_SJLJ_LONGJMP: return "EH_SJLJ_LONGJMP";
case ISD::EH_SJLJ_DISPATCHSETUP: return "EH_SJLJ_DISPATCHSETUP";
case ISD::ConstantPool: return "ConstantPool";
case ISD::ExternalSymbol: return "ExternalSymbol";
case ISD::BlockAddress: return "BlockAddress";
case ISD::INTRINSIC_WO_CHAIN:
case ISD::INTRINSIC_VOID:
case ISD::INTRINSIC_W_CHAIN: {
unsigned OpNo = getOpcode() == ISD::INTRINSIC_WO_CHAIN ? 0 : 1;
unsigned IID = cast<ConstantSDNode>(getOperand(OpNo))->getZExtValue();
if (IID < Intrinsic::num_intrinsics)
return Intrinsic::getName((Intrinsic::ID)IID);
else if (const TargetIntrinsicInfo *TII = G->getTarget().getIntrinsicInfo())
return TII->getName(IID);
llvm_unreachable("Invalid intrinsic ID");
}
case ISD::BUILD_VECTOR: return "BUILD_VECTOR";
case ISD::TargetConstant: return "TargetConstant";
case ISD::TargetConstantFP:return "TargetConstantFP";
case ISD::TargetGlobalAddress: return "TargetGlobalAddress";
case ISD::TargetGlobalTLSAddress: return "TargetGlobalTLSAddress";
case ISD::TargetFrameIndex: return "TargetFrameIndex";
case ISD::TargetJumpTable: return "TargetJumpTable";
case ISD::TargetConstantPool: return "TargetConstantPool";
case ISD::TargetExternalSymbol: return "TargetExternalSymbol";
case ISD::TargetBlockAddress: return "TargetBlockAddress";
case ISD::CopyToReg: return "CopyToReg";
case ISD::CopyFromReg: return "CopyFromReg";
case ISD::UNDEF: return "undef";
case ISD::MERGE_VALUES: return "merge_values";
case ISD::INLINEASM: return "inlineasm";
case ISD::EH_LABEL: return "eh_label";
case ISD::HANDLENODE: return "handlenode";
case ISD::FABS: return "fabs";
case ISD::FNEG: return "fneg";
case ISD::FSQRT: return "fsqrt";
case ISD::FSIN: return "fsin";
case ISD::FCOS: return "fcos";
case ISD::FTRUNC: return "ftrunc";
case ISD::FFLOOR: return "ffloor";
case ISD::FCEIL: return "fceil";
case ISD::FRINT: return "frint";
case ISD::FNEARBYINT: return "fnearbyint";
case ISD::FEXP: return "fexp";
case ISD::FEXP2: return "fexp2";
case ISD::FLOG: return "flog";
case ISD::FLOG2: return "flog2";
case ISD::FLOG10: return "flog10";
case ISD::ADD: return "add";
case ISD::SUB: return "sub";
case ISD::MUL: return "mul";
case ISD::MULHU: return "mulhu";
case ISD::MULHS: return "mulhs";
case ISD::SDIV: return "sdiv";
case ISD::UDIV: return "udiv";
case ISD::SREM: return "srem";
case ISD::UREM: return "urem";
case ISD::SMUL_LOHI: return "smul_lohi";
case ISD::UMUL_LOHI: return "umul_lohi";
case ISD::SDIVREM: return "sdivrem";
case ISD::UDIVREM: return "udivrem";
case ISD::AND: return "and";
case ISD::OR: return "or";
case ISD::XOR: return "xor";
case ISD::SHL: return "shl";
case ISD::SRA: return "sra";
case ISD::SRL: return "srl";
case ISD::ROTL: return "rotl";
case ISD::ROTR: return "rotr";
case ISD::FADD: return "fadd";
case ISD::FSUB: return "fsub";
case ISD::FMUL: return "fmul";
case ISD::FDIV: return "fdiv";
case ISD::FREM: return "frem";
case ISD::FCOPYSIGN: return "fcopysign";
case ISD::FGETSIGN: return "fgetsign";
case ISD::FPOW: return "fpow";
case ISD::FPOWI: return "fpowi";
case ISD::SETCC: return "setcc";
case ISD::VSETCC: return "vsetcc";
case ISD::SELECT: return "select";
case ISD::SELECT_CC: return "select_cc";
case ISD::INSERT_VECTOR_ELT: return "insert_vector_elt";
case ISD::EXTRACT_VECTOR_ELT: return "extract_vector_elt";
case ISD::CONCAT_VECTORS: return "concat_vectors";
case ISD::INSERT_SUBVECTOR: return "insert_subvector";
case ISD::EXTRACT_SUBVECTOR: return "extract_subvector";
case ISD::SCALAR_TO_VECTOR: return "scalar_to_vector";
case ISD::VECTOR_SHUFFLE: return "vector_shuffle";
case ISD::CARRY_FALSE: return "carry_false";
case ISD::ADDC: return "addc";
case ISD::ADDE: return "adde";
case ISD::SADDO: return "saddo";
case ISD::UADDO: return "uaddo";
case ISD::SSUBO: return "ssubo";
case ISD::USUBO: return "usubo";
case ISD::SMULO: return "smulo";
case ISD::UMULO: return "umulo";
case ISD::SUBC: return "subc";
case ISD::SUBE: return "sube";
case ISD::SHL_PARTS: return "shl_parts";
case ISD::SRA_PARTS: return "sra_parts";
case ISD::SRL_PARTS: return "srl_parts";
case ISD::SIGN_EXTEND: return "sign_extend";
case ISD::ZERO_EXTEND: return "zero_extend";
case ISD::ANY_EXTEND: return "any_extend";
case ISD::SIGN_EXTEND_INREG: return "sign_extend_inreg";
case ISD::TRUNCATE: return "truncate";
case ISD::FP_ROUND: return "fp_round";
case ISD::FLT_ROUNDS_: return "flt_rounds";
case ISD::FP_ROUND_INREG: return "fp_round_inreg";
case ISD::FP_EXTEND: return "fp_extend";
case ISD::SINT_TO_FP: return "sint_to_fp";
case ISD::UINT_TO_FP: return "uint_to_fp";
case ISD::FP_TO_SINT: return "fp_to_sint";
case ISD::FP_TO_UINT: return "fp_to_uint";
case ISD::BITCAST: return "bitcast";
case ISD::FP16_TO_FP32: return "fp16_to_fp32";
case ISD::FP32_TO_FP16: return "fp32_to_fp16";
case ISD::CONVERT_RNDSAT: {
switch (cast<CvtRndSatSDNode>(this)->getCvtCode()) {
default: llvm_unreachable("Unknown cvt code!");
case ISD::CVT_FF: return "cvt_ff";
case ISD::CVT_FS: return "cvt_fs";
case ISD::CVT_FU: return "cvt_fu";
case ISD::CVT_SF: return "cvt_sf";
case ISD::CVT_UF: return "cvt_uf";
case ISD::CVT_SS: return "cvt_ss";
case ISD::CVT_SU: return "cvt_su";
case ISD::CVT_US: return "cvt_us";
case ISD::CVT_UU: return "cvt_uu";
}
}
case ISD::BR: return "br";
case ISD::BRIND: return "brind";
case ISD::BR_JT: return "br_jt";
case ISD::BRCOND: return "brcond";
case ISD::BR_CC: return "br_cc";
case ISD::CALLSEQ_START: return "callseq_start";
case ISD::CALLSEQ_END: return "callseq_end";
case ISD::LOAD: return "load";
case ISD::STORE: return "store";
case ISD::VAARG: return "vaarg";
case ISD::VACOPY: return "vacopy";
case ISD::VAEND: return "vaend";
case ISD::VASTART: return "vastart";
case ISD::DYNAMIC_STACKALLOC: return "dynamic_stackalloc";
case ISD::EXTRACT_ELEMENT: return "extract_element";
case ISD::BUILD_PAIR: return "build_pair";
case ISD::STACKSAVE: return "stacksave";
case ISD::STACKRESTORE: return "stackrestore";
case ISD::TRAP: return "trap";
case ISD::BSWAP: return "bswap";
case ISD::CTPOP: return "ctpop";
case ISD::CTTZ: return "cttz";
case ISD::CTLZ: return "ctlz";
case ISD::TRAMPOLINE: return "trampoline";
case ISD::CONDCODE:
switch (cast<CondCodeSDNode>(this)->get()) {
default: llvm_unreachable("Unknown setcc condition!");
case ISD::SETOEQ: return "setoeq";
case ISD::SETOGT: return "setogt";
case ISD::SETOGE: return "setoge";
case ISD::SETOLT: return "setolt";
case ISD::SETOLE: return "setole";
case ISD::SETONE: return "setone";
case ISD::SETO: return "seto";
case ISD::SETUO: return "setuo";
case ISD::SETUEQ: return "setue";
case ISD::SETUGT: return "setugt";
case ISD::SETUGE: return "setuge";
case ISD::SETULT: return "setult";
case ISD::SETULE: return "setule";
case ISD::SETUNE: return "setune";
case ISD::SETEQ: return "seteq";
case ISD::SETGT: return "setgt";
case ISD::SETGE: return "setge";
case ISD::SETLT: return "setlt";
case ISD::SETLE: return "setle";
case ISD::SETNE: return "setne";
}
}
}
const char *SDNode::getIndexedModeName(ISD::MemIndexedMode AM) {
switch (AM) {
default:
return "";
case ISD::PRE_INC:
return "<pre-inc>";
case ISD::PRE_DEC:
return "<pre-dec>";
case ISD::POST_INC:
return "<post-inc>";
case ISD::POST_DEC:
return "<post-dec>";
}
}
std::string ISD::ArgFlagsTy::getArgFlagsString() {
std::string S = "< ";
if (isZExt())
S += "zext ";
if (isSExt())
S += "sext ";
if (isInReg())
S += "inreg ";
if (isSRet())
S += "sret ";
if (isByVal())
S += "byval ";
if (isNest())
S += "nest ";
if (getByValAlign())
S += "byval-align:" + utostr(getByValAlign()) + " ";
if (getOrigAlign())
S += "orig-align:" + utostr(getOrigAlign()) + " ";
if (getByValSize())
S += "byval-size:" + utostr(getByValSize()) + " ";
return S + ">";
}
void SDNode::dump() const { dump(0); }
void SDNode::dump(const SelectionDAG *G) const {
print(dbgs(), G);
dbgs() << '\n';
}
void SDNode::print_types(raw_ostream &OS, const SelectionDAG *G) const {
OS << (void*)this << ": ";
for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
if (i) OS << ",";
if (getValueType(i) == MVT::Other)
OS << "ch";
else
OS << getValueType(i).getEVTString();
}
OS << " = " << getOperationName(G);
}
void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
if (const MachineSDNode *MN = dyn_cast<MachineSDNode>(this)) {
if (!MN->memoperands_empty()) {
OS << "<";
OS << "Mem:";
for (MachineSDNode::mmo_iterator i = MN->memoperands_begin(),
e = MN->memoperands_end(); i != e; ++i) {
OS << **i;
if (llvm::next(i) != e)
OS << " ";
}
OS << ">";
}
} else if (const ShuffleVectorSDNode *SVN =
dyn_cast<ShuffleVectorSDNode>(this)) {
OS << "<";
for (unsigned i = 0, e = ValueList[0].getVectorNumElements(); i != e; ++i) {
int Idx = SVN->getMaskElt(i);
if (i) OS << ",";
if (Idx < 0)
OS << "u";
else
OS << Idx;
}
OS << ">";
} else if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
OS << '<' << CSDN->getAPIntValue() << '>';
} else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
if (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEsingle)
OS << '<' << CSDN->getValueAPF().convertToFloat() << '>';
else if (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEdouble)
OS << '<' << CSDN->getValueAPF().convertToDouble() << '>';
else {
OS << "<APFloat(";
CSDN->getValueAPF().bitcastToAPInt().dump();
OS << ")>";
}
} else if (const GlobalAddressSDNode *GADN =
dyn_cast<GlobalAddressSDNode>(this)) {
int64_t offset = GADN->getOffset();
OS << '<';
WriteAsOperand(OS, GADN->getGlobal());
OS << '>';
if (offset > 0)
OS << " + " << offset;
else
OS << " " << offset;
if (unsigned int TF = GADN->getTargetFlags())
OS << " [TF=" << TF << ']';
} else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(this)) {
OS << "<" << FIDN->getIndex() << ">";
} else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(this)) {
OS << "<" << JTDN->getIndex() << ">";
if (unsigned int TF = JTDN->getTargetFlags())
OS << " [TF=" << TF << ']';
} else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(this)){
int offset = CP->getOffset();
if (CP->isMachineConstantPoolEntry())
OS << "<" << *CP->getMachineCPVal() << ">";
else
OS << "<" << *CP->getConstVal() << ">";
if (offset > 0)
OS << " + " << offset;
else
OS << " " << offset;
if (unsigned int TF = CP->getTargetFlags())
OS << " [TF=" << TF << ']';
} else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(this)) {
OS << "<";
const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
if (LBB)
OS << LBB->getName() << " ";
OS << (const void*)BBDN->getBasicBlock() << ">";
} else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
OS << ' ' << PrintReg(R->getReg(), G ? G->getTarget().getRegisterInfo() :0);
} else if (const ExternalSymbolSDNode *ES =
dyn_cast<ExternalSymbolSDNode>(this)) {
OS << "'" << ES->getSymbol() << "'";
if (unsigned int TF = ES->getTargetFlags())
OS << " [TF=" << TF << ']';
} else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(this)) {
if (M->getValue())
OS << "<" << M->getValue() << ">";
else
OS << "<null>";
} else if (const MDNodeSDNode *MD = dyn_cast<MDNodeSDNode>(this)) {
if (MD->getMD())
OS << "<" << MD->getMD() << ">";
else
OS << "<null>";
} else if (const VTSDNode *N = dyn_cast<VTSDNode>(this)) {
OS << ":" << N->getVT().getEVTString();
}
else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(this)) {
OS << "<" << *LD->getMemOperand();
bool doExt = true;
switch (LD->getExtensionType()) {
default: doExt = false; break;
case ISD::EXTLOAD: OS << ", anyext"; break;
case ISD::SEXTLOAD: OS << ", sext"; break;
case ISD::ZEXTLOAD: OS << ", zext"; break;
}
if (doExt)
OS << " from " << LD->getMemoryVT().getEVTString();
const char *AM = getIndexedModeName(LD->getAddressingMode());
if (*AM)
OS << ", " << AM;
OS << ">";
} else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(this)) {
OS << "<" << *ST->getMemOperand();
if (ST->isTruncatingStore())
OS << ", trunc to " << ST->getMemoryVT().getEVTString();
const char *AM = getIndexedModeName(ST->getAddressingMode());
if (*AM)
OS << ", " << AM;
OS << ">";
} else if (const MemSDNode* M = dyn_cast<MemSDNode>(this)) {
OS << "<" << *M->getMemOperand() << ">";
} else if (const BlockAddressSDNode *BA =
dyn_cast<BlockAddressSDNode>(this)) {
OS << "<";
WriteAsOperand(OS, BA->getBlockAddress()->getFunction(), false);
OS << ", ";
WriteAsOperand(OS, BA->getBlockAddress()->getBasicBlock(), false);
OS << ">";
if (unsigned int TF = BA->getTargetFlags())
OS << " [TF=" << TF << ']';
}
if (G)
if (unsigned Order = G->GetOrdering(this))
OS << " [ORD=" << Order << ']';
if (getNodeId() != -1)
OS << " [ID=" << getNodeId() << ']';
DebugLoc dl = getDebugLoc();
if (G && !dl.isUnknown()) {
DIScope
Scope(dl.getScope(G->getMachineFunction().getFunction()->getContext()));
OS << " dbg:";
if (Scope.Verify())
OS << Scope.getFilename();
else
OS << "<unknown>";
OS << ':' << dl.getLine();
if (dl.getCol() != 0)
OS << ':' << dl.getCol();
}
}
void SDNode::print(raw_ostream &OS, const SelectionDAG *G) const {
print_types(OS, G);
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
if (i) OS << ", "; else OS << " ";
OS << (void*)getOperand(i).getNode();
if (unsigned RN = getOperand(i).getResNo())
OS << ":" << RN;
}
print_details(OS, G);
}
static void printrWithDepthHelper(raw_ostream &OS, const SDNode *N,
const SelectionDAG *G, unsigned depth,
unsigned indent)
{
if (depth == 0)
return;
OS.indent(indent);
N->print(OS, G);
if (depth < 1)
return;
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
if (N->getOperand(i).getValueType() == MVT::Other)
continue;
OS << '\n';
printrWithDepthHelper(OS, N->getOperand(i).getNode(), G, depth-1, indent+2);
}
}
void SDNode::printrWithDepth(raw_ostream &OS, const SelectionDAG *G,
unsigned depth) const {
printrWithDepthHelper(OS, this, G, depth, 0);
}
void SDNode::printrFull(raw_ostream &OS, const SelectionDAG *G) const {
printrWithDepth(OS, G, 10);
}
void SDNode::dumprWithDepth(const SelectionDAG *G, unsigned depth) const {
printrWithDepth(dbgs(), G, depth);
}
void SDNode::dumprFull(const SelectionDAG *G) const {
dumprWithDepth(G, 10);
}
static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
if (N->getOperand(i).getNode()->hasOneUse())
DumpNodes(N->getOperand(i).getNode(), indent+2, G);
else
dbgs() << "\n" << std::string(indent+2, ' ')
<< (void*)N->getOperand(i).getNode() << ": <multiple use>";
dbgs() << "\n";
dbgs().indent(indent);
N->dump(G);
}
SDValue SelectionDAG::UnrollVectorOp(SDNode *N, unsigned ResNE) {
assert(N->getNumValues() == 1 &&
"Can't unroll a vector with multiple results!");
EVT VT = N->getValueType(0);
unsigned NE = VT.getVectorNumElements();
EVT EltVT = VT.getVectorElementType();
DebugLoc dl = N->getDebugLoc();
SmallVector<SDValue, 8> Scalars;
SmallVector<SDValue, 4> Operands(N->getNumOperands());
if (ResNE == 0)
ResNE = NE;
else if (NE > ResNE)
NE = ResNE;
unsigned i;
for (i= 0; i != NE; ++i) {
for (unsigned j = 0, e = N->getNumOperands(); j != e; ++j) {
SDValue Operand = N->getOperand(j);
EVT OperandVT = Operand.getValueType();
if (OperandVT.isVector()) {
EVT OperandEltVT = OperandVT.getVectorElementType();
Operands[j] = getNode(ISD::EXTRACT_VECTOR_ELT, dl,
OperandEltVT,
Operand,
getConstant(i, TLI.getPointerTy()));
} else {
Operands[j] = Operand;
}
}
switch (N->getOpcode()) {
default:
Scalars.push_back(getNode(N->getOpcode(), dl, EltVT,
&Operands[0], Operands.size()));
break;
case ISD::SHL:
case ISD::SRA:
case ISD::SRL:
case ISD::ROTL:
case ISD::ROTR:
Scalars.push_back(getNode(N->getOpcode(), dl, EltVT, Operands[0],
getShiftAmountOperand(Operands[0].getValueType(),
Operands[1])));
break;
case ISD::SIGN_EXTEND_INREG:
case ISD::FP_ROUND_INREG: {
EVT ExtVT = cast<VTSDNode>(Operands[1])->getVT().getVectorElementType();
Scalars.push_back(getNode(N->getOpcode(), dl, EltVT,
Operands[0],
getValueType(ExtVT)));
}
}
}
for (; i < ResNE; ++i)
Scalars.push_back(getUNDEF(EltVT));
return getNode(ISD::BUILD_VECTOR, dl,
EVT::getVectorVT(*getContext(), EltVT, ResNE),
&Scalars[0], Scalars.size());
}
bool SelectionDAG::isConsecutiveLoad(LoadSDNode *LD, LoadSDNode *Base,
unsigned Bytes, int Dist) const {
if (LD->getChain() != Base->getChain())
return false;
EVT VT = LD->getValueType(0);
if (VT.getSizeInBits() / 8 != Bytes)
return false;
SDValue Loc = LD->getOperand(1);
SDValue BaseLoc = Base->getOperand(1);
if (Loc.getOpcode() == ISD::FrameIndex) {
if (BaseLoc.getOpcode() != ISD::FrameIndex)
return false;
const MachineFrameInfo *MFI = getMachineFunction().getFrameInfo();
int FI = cast<FrameIndexSDNode>(Loc)->getIndex();
int BFI = cast<FrameIndexSDNode>(BaseLoc)->getIndex();
int FS = MFI->getObjectSize(FI);
int BFS = MFI->getObjectSize(BFI);
if (FS != BFS || FS != (int)Bytes) return false;
return MFI->getObjectOffset(FI) == (MFI->getObjectOffset(BFI) + Dist*Bytes);
}
if (isBaseWithConstantOffset(Loc) && Loc.getOperand(0) == BaseLoc &&
cast<ConstantSDNode>(Loc.getOperand(1))->getSExtValue() == Dist*Bytes)
return true;
const GlobalValue *GV1 = NULL;
const GlobalValue *GV2 = NULL;
int64_t Offset1 = 0;
int64_t Offset2 = 0;
bool isGA1 = TLI.isGAPlusOffset(Loc.getNode(), GV1, Offset1);
bool isGA2 = TLI.isGAPlusOffset(BaseLoc.getNode(), GV2, Offset2);
if (isGA1 && isGA2 && GV1 == GV2)
return Offset1 == (Offset2 + Dist*Bytes);
return false;
}
unsigned SelectionDAG::InferPtrAlignment(SDValue Ptr) const {
const GlobalValue *GV;
int64_t GVOffset = 0;
if (TLI.isGAPlusOffset(Ptr.getNode(), GV, GVOffset)) {
unsigned Align = GV->getAlignment();
if (!Align) {
if (const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) {
if (GVar->hasInitializer()) {
const TargetData *TD = TLI.getTargetData();
Align = TD->getPreferredAlignment(GVar);
}
}
}
return MinAlign(Align, GVOffset);
}
int FrameIdx = 1 << 31;
int64_t FrameOffset = 0;
if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Ptr)) {
FrameIdx = FI->getIndex();
} else if (isBaseWithConstantOffset(Ptr) &&
isa<FrameIndexSDNode>(Ptr.getOperand(0))) {
FrameIdx = cast<FrameIndexSDNode>(Ptr.getOperand(0))->getIndex();
FrameOffset = Ptr.getConstantOperandVal(1);
}
if (FrameIdx != (1 << 31)) {
const MachineFrameInfo &MFI = *getMachineFunction().getFrameInfo();
unsigned FIInfoAlign = MinAlign(MFI.getObjectAlignment(FrameIdx),
FrameOffset);
return FIInfoAlign;
}
return 0;
}
void SelectionDAG::dump() const {
dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:";
for (allnodes_const_iterator I = allnodes_begin(), E = allnodes_end();
I != E; ++I) {
const SDNode *N = I;
if (!N->hasOneUse() && N != getRoot().getNode())
DumpNodes(N, 2, this);
}
if (getRoot().getNode()) DumpNodes(getRoot().getNode(), 2, this);
dbgs() << "\n\n";
}
void SDNode::printr(raw_ostream &OS, const SelectionDAG *G) const {
print_types(OS, G);
print_details(OS, G);
}
typedef SmallPtrSet<const SDNode *, 128> VisitedSDNodeSet;
static void DumpNodesr(raw_ostream &OS, const SDNode *N, unsigned indent,
const SelectionDAG *G, VisitedSDNodeSet &once) {
if (!once.insert(N)) return;
OS << std::string(indent, ' ');
N->printr(OS, G);
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
const SDNode *child = N->getOperand(i).getNode();
if (i) OS << ",";
OS << " ";
if (child->getNumOperands() == 0) {
child->printr(OS, G);
once.insert(child);
} else { OS << (void*)child;
if (unsigned RN = N->getOperand(i).getResNo())
OS << ":" << RN;
}
}
OS << "\n";
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
const SDNode *child = N->getOperand(i).getNode();
DumpNodesr(OS, child, indent+2, G, once);
}
}
void SDNode::dumpr() const {
VisitedSDNodeSet once;
DumpNodesr(dbgs(), this, 0, 0, once);
}
void SDNode::dumpr(const SelectionDAG *G) const {
VisitedSDNodeSet once;
DumpNodesr(dbgs(), this, 0, G, once);
}
unsigned GlobalAddressSDNode::getAddressSpace() const {
return getGlobal()->getType()->getAddressSpace();
}
const Type *ConstantPoolSDNode::getType() const {
if (isMachineConstantPoolEntry())
return Val.MachineCPVal->getType();
return Val.ConstVal->getType();
}
bool BuildVectorSDNode::isConstantSplat(APInt &SplatValue,
APInt &SplatUndef,
unsigned &SplatBitSize,
bool &HasAnyUndefs,
unsigned MinSplatBits,
bool isBigEndian) {
EVT VT = getValueType(0);
assert(VT.isVector() && "Expected a vector type");
unsigned sz = VT.getSizeInBits();
if (MinSplatBits > sz)
return false;
SplatValue = APInt(sz, 0);
SplatUndef = APInt(sz, 0);
unsigned int nOps = getNumOperands();
assert(nOps > 0 && "isConstantSplat has 0-size build vector");
unsigned EltBitSize = VT.getVectorElementType().getSizeInBits();
for (unsigned j = 0; j < nOps; ++j) {
unsigned i = isBigEndian ? nOps-1-j : j;
SDValue OpVal = getOperand(i);
unsigned BitPos = j * EltBitSize;
if (OpVal.getOpcode() == ISD::UNDEF)
SplatUndef |= APInt::getBitsSet(sz, BitPos, BitPos + EltBitSize);
else if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(OpVal))
SplatValue |= CN->getAPIntValue().zextOrTrunc(EltBitSize).
zextOrTrunc(sz) << BitPos;
else if (ConstantFPSDNode *CN = dyn_cast<ConstantFPSDNode>(OpVal))
SplatValue |= CN->getValueAPF().bitcastToAPInt().zextOrTrunc(sz) <<BitPos;
else
return false;
}
HasAnyUndefs = (SplatUndef != 0);
while (sz > 8) {
unsigned HalfSize = sz / 2;
APInt HighValue = SplatValue.lshr(HalfSize).trunc(HalfSize);
APInt LowValue = SplatValue.trunc(HalfSize);
APInt HighUndef = SplatUndef.lshr(HalfSize).trunc(HalfSize);
APInt LowUndef = SplatUndef.trunc(HalfSize);
if ((HighValue & ~LowUndef) != (LowValue & ~HighUndef) ||
MinSplatBits > HalfSize)
break;
SplatValue = HighValue | LowValue;
SplatUndef = HighUndef & LowUndef;
sz = HalfSize;
}
SplatBitSize = sz;
return true;
}
bool ShuffleVectorSDNode::isSplatMask(const int *Mask, EVT VT) {
unsigned i, e;
for (i = 0, e = VT.getVectorNumElements(); i != e && Mask[i] < 0; ++i)
;
assert(i != e && "VECTOR_SHUFFLE node with all undef indices!");
for (int Idx = Mask[i]; i != e; ++i)
if (Mask[i] >= 0 && Mask[i] != Idx)
return false;
return true;
}
#ifdef XDEBUG
static void checkForCyclesHelper(const SDNode *N,
SmallPtrSet<const SDNode*, 32> &Visited,
SmallPtrSet<const SDNode*, 32> &Checked) {
if (Checked.count(N))
return;
if (!Visited.insert(N)) {
dbgs() << "Offending node:\n";
N->dumprFull();
errs() << "Detected cycle in SelectionDAG\n";
abort();
}
for(unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
checkForCyclesHelper(N->getOperand(i).getNode(), Visited, Checked);
Checked.insert(N);
Visited.erase(N);
}
#endif
void llvm::checkForCycles(const llvm::SDNode *N) {
#ifdef XDEBUG
assert(N && "Checking nonexistant SDNode");
SmallPtrSet<const SDNode*, 32> visited;
SmallPtrSet<const SDNode*, 32> checked;
checkForCyclesHelper(N, visited, checked);
#endif
}
void llvm::checkForCycles(const llvm::SelectionDAG *DAG) {
checkForCycles(DAG->getRoot().getNode());
}