//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Assembly/Writer.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/Support/MathExtras.h"
-#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.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>
return Res;
}
+SelectionDAG::DAGUpdateListener::~DAGUpdateListener() {}
+
//===----------------------------------------------------------------------===//
// ConstantFPSDNode Class
//===----------------------------------------------------------------------===//
return true;
}
+/// isScalarToVector - Return true if the specified node is a
+/// ISD::SCALAR_TO_VECTOR node or a BUILD_VECTOR node where only the low
+/// element is not an undef.
+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();
+ for (unsigned i = 1; i < NumElems; ++i) {
+ SDOperand V = N->getOperand(i);
+ if (V.getOpcode() != ISD::UNDEF)
+ return false;
+ }
+ return true;
+}
+
+
+/// isDebugLabel - Return true if the specified node represents a debug
+/// label (i.e. ISD::LABEL or TargetInstrInfo::LABEL node and third operand
+/// is 0).
+bool ISD::isDebugLabel(const SDNode *N) {
+ SDOperand Zero;
+ if (N->getOpcode() == ISD::LABEL)
+ Zero = N->getOperand(2);
+ else if (N->isTargetOpcode() &&
+ N->getTargetOpcode() == TargetInstrInfo::LABEL)
+ // Chain moved to last operand.
+ Zero = N->getOperand(1);
+ else
+ return false;
+ return isa<ConstantSDNode>(Zero) && cast<ConstantSDNode>(Zero)->isNullValue();
+}
+
/// getSetCCSwappedOperands - Return the operation corresponding to (Y op X)
/// when given the operation for (X op Y).
ISD::CondCode ISD::getSetCCSwappedOperands(ISD::CondCode Operation) {
default: break; // Normal nodes don't need extra info.
case ISD::TargetConstant:
case ISD::Constant:
- ID.AddInteger(cast<ConstantSDNode>(N)->getValue());
+ ID.Add(cast<ConstantSDNode>(N)->getAPIntValue());
break;
case ISD::TargetConstantFP:
case ISD::ConstantFP: {
- ID.AddAPFloat(cast<ConstantFPSDNode>(N)->getValueAPF());
+ ID.Add(cast<ConstantFPSDNode>(N)->getValueAPF());
break;
}
case ISD::TargetGlobalAddress:
case ISD::Register:
ID.AddInteger(cast<RegisterSDNode>(N)->getReg());
break;
- case ISD::SRCVALUE: {
- SrcValueSDNode *SV = cast<SrcValueSDNode>(N);
- ID.AddPointer(SV->getValue());
- ID.AddInteger(SV->getOffset());
+ case ISD::SRCVALUE:
+ ID.AddPointer(cast<SrcValueSDNode>(N)->getValue());
+ break;
+ case ISD::MEMOPERAND: {
+ const MemOperand &MO = cast<MemOperandSDNode>(N)->MO;
+ ID.AddPointer(MO.getValue());
+ ID.AddInteger(MO.getFlags());
+ ID.AddInteger(MO.getOffset());
+ ID.AddInteger(MO.getSize());
+ ID.AddInteger(MO.getAlignment());
break;
}
case ISD::FrameIndex:
LoadSDNode *LD = cast<LoadSDNode>(N);
ID.AddInteger(LD->getAddressingMode());
ID.AddInteger(LD->getExtensionType());
- ID.AddInteger((unsigned int)(LD->getLoadedVT()));
- ID.AddPointer(LD->getSrcValue());
- ID.AddInteger(LD->getSrcValueOffset());
+ ID.AddInteger((unsigned int)(LD->getMemoryVT()));
ID.AddInteger(LD->getAlignment());
ID.AddInteger(LD->isVolatile());
break;
StoreSDNode *ST = cast<StoreSDNode>(N);
ID.AddInteger(ST->getAddressingMode());
ID.AddInteger(ST->isTruncatingStore());
- ID.AddInteger((unsigned int)(ST->getStoredVT()));
- ID.AddPointer(ST->getSrcValue());
- ID.AddInteger(ST->getSrcValueOffset());
+ ID.AddInteger((unsigned int)(ST->getMemoryVT()));
ID.AddInteger(ST->getAlignment());
ID.AddInteger(ST->isVolatile());
break;
setRoot(Dummy.getValue());
}
-void SelectionDAG::RemoveDeadNode(SDNode *N, std::vector<SDNode*> &Deleted) {
+void SelectionDAG::RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener){
SmallVector<SDNode*, 16> DeadNodes;
DeadNodes.push_back(N);
SDNode *N = DeadNodes.back();
DeadNodes.pop_back();
+ if (UpdateListener)
+ UpdateListener->NodeDeleted(N);
+
// Take the node out of the appropriate CSE map.
RemoveNodeFromCSEMaps(N);
N->NumOperands = 0;
// Finally, remove N itself.
- Deleted.push_back(N);
AllNodes.erase(N);
}
}
Erased =
TargetExternalSymbols.erase(cast<ExternalSymbolSDNode>(N)->getSymbol());
break;
- case ISD::VALUETYPE:
- Erased = ValueTypeNodes[cast<VTSDNode>(N)->getVT()] != 0;
- ValueTypeNodes[cast<VTSDNode>(N)->getVT()] = 0;
+ case ISD::VALUETYPE: {
+ MVT::ValueType VT = cast<VTSDNode>(N)->getVT();
+ if (MVT::isExtendedVT(VT)) {
+ Erased = ExtendedValueTypeNodes.erase(VT);
+ } else {
+ Erased = ValueTypeNodes[VT] != 0;
+ ValueTypeNodes[VT] = 0;
+ }
break;
+ }
default:
// Remove it from the CSE Map.
Erased = CSEMap.RemoveNode(N);
if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
ID.AddInteger(LD->getAddressingMode());
ID.AddInteger(LD->getExtensionType());
- ID.AddInteger((unsigned int)(LD->getLoadedVT()));
- ID.AddPointer(LD->getSrcValue());
- ID.AddInteger(LD->getSrcValueOffset());
+ ID.AddInteger((unsigned int)(LD->getMemoryVT()));
ID.AddInteger(LD->getAlignment());
ID.AddInteger(LD->isVolatile());
} else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
ID.AddInteger(ST->getAddressingMode());
ID.AddInteger(ST->isTruncatingStore());
- ID.AddInteger((unsigned int)(ST->getStoredVT()));
- ID.AddPointer(ST->getSrcValue());
- ID.AddInteger(ST->getSrcValueOffset());
+ ID.AddInteger((unsigned int)(ST->getMemoryVT()));
ID.AddInteger(ST->getAlignment());
ID.AddInteger(ST->isVolatile());
}
}
SDOperand SelectionDAG::getConstant(uint64_t Val, MVT::ValueType VT, bool isT) {
+ MVT::ValueType EltVT =
+ MVT::isVector(VT) ? MVT::getVectorElementType(VT) : VT;
+
+ return getConstant(APInt(MVT::getSizeInBits(EltVT), Val), VT, isT);
+}
+
+SDOperand SelectionDAG::getConstant(const APInt &Val, MVT::ValueType VT, bool isT) {
assert(MVT::isInteger(VT) && "Cannot create FP integer constant!");
- assert(!MVT::isVector(VT) && "Cannot create Vector ConstantSDNodes!");
+
+ MVT::ValueType EltVT =
+ MVT::isVector(VT) ? MVT::getVectorElementType(VT) : VT;
- // Mask out any bits that are not valid for this constant.
- Val &= MVT::getIntVTBitMask(VT);
+ assert(Val.getBitWidth() == MVT::getSizeInBits(EltVT) &&
+ "APInt size does not match type size!");
unsigned Opc = isT ? ISD::TargetConstant : ISD::Constant;
FoldingSetNodeID ID;
- AddNodeIDNode(ID, Opc, getVTList(VT), 0, 0);
- ID.AddInteger(Val);
+ AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
+ ID.Add(Val);
void *IP = 0;
- if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
- return SDOperand(E, 0);
- SDNode *N = new ConstantSDNode(isT, Val, VT);
- CSEMap.InsertNode(N, IP);
- AllNodes.push_back(N);
- return SDOperand(N, 0);
+ SDNode *N = NULL;
+ if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))
+ if (!MVT::isVector(VT))
+ return SDOperand(N, 0);
+ if (!N) {
+ N = new ConstantSDNode(isT, Val, EltVT);
+ CSEMap.InsertNode(N, IP);
+ AllNodes.push_back(N);
+ }
+
+ SDOperand Result(N, 0);
+ if (MVT::isVector(VT)) {
+ SmallVector<SDOperand, 8> Ops;
+ Ops.assign(MVT::getVectorNumElements(VT), Result);
+ Result = getNode(ISD::BUILD_VECTOR, VT, &Ops[0], Ops.size());
+ }
+ return Result;
+}
+
+SDOperand SelectionDAG::getIntPtrConstant(uint64_t Val, bool isTarget) {
+ return getConstant(Val, TLI.getPointerTy(), isTarget);
}
+
SDOperand SelectionDAG::getConstantFP(const APFloat& V, MVT::ValueType VT,
bool isTarget) {
assert(MVT::isFloatingPoint(VT) && "Cannot create integer FP constant!");
unsigned Opc = isTarget ? ISD::TargetConstantFP : ISD::ConstantFP;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
- ID.AddAPFloat(V);
+ ID.Add(V);
void *IP = 0;
SDNode *N = NULL;
if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))
}
SDOperand SelectionDAG::getValueType(MVT::ValueType VT) {
- if ((unsigned)VT >= ValueTypeNodes.size())
+ if (!MVT::isExtendedVT(VT) && (unsigned)VT >= ValueTypeNodes.size())
ValueTypeNodes.resize(VT+1);
- if (ValueTypeNodes[VT] == 0) {
- ValueTypeNodes[VT] = new VTSDNode(VT);
- AllNodes.push_back(ValueTypeNodes[VT]);
- }
- return SDOperand(ValueTypeNodes[VT], 0);
+ SDNode *&N = MVT::isExtendedVT(VT) ?
+ ExtendedValueTypeNodes[VT] : ValueTypeNodes[VT];
+
+ if (N) return SDOperand(N, 0);
+ N = new VTSDNode(VT);
+ AllNodes.push_back(N);
+ return SDOperand(N, 0);
}
SDOperand SelectionDAG::getExternalSymbol(const char *Sym, MVT::ValueType VT) {
return SDOperand(N, 0);
}
-SDOperand SelectionDAG::getSrcValue(const Value *V, int Offset) {
+SDOperand SelectionDAG::getSrcValue(const Value *V) {
assert((!V || isa<PointerType>(V->getType())) &&
"SrcValue is not a pointer?");
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::SRCVALUE, getVTList(MVT::Other), 0, 0);
ID.AddPointer(V);
- ID.AddInteger(Offset);
+
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
- SDNode *N = new SrcValueSDNode(V, Offset);
+
+ SDNode *N = new SrcValueSDNode(V);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDOperand(N, 0);
}
+SDOperand SelectionDAG::getMemOperand(const MemOperand &MO) {
+ const Value *v = MO.getValue();
+ assert((!v || isa<PointerType>(v->getType())) &&
+ "SrcValue is not a pointer?");
+
+ FoldingSetNodeID ID;
+ AddNodeIDNode(ID, ISD::MEMOPERAND, getVTList(MVT::Other), 0, 0);
+ ID.AddPointer(v);
+ ID.AddInteger(MO.getFlags());
+ ID.AddInteger(MO.getOffset());
+ ID.AddInteger(MO.getSize());
+ ID.AddInteger(MO.getAlignment());
+
+ void *IP = 0;
+ if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
+ return SDOperand(E, 0);
+
+ SDNode *N = new MemOperandSDNode(MO);
+ CSEMap.InsertNode(N, IP);
+ AllNodes.push_back(N);
+ return SDOperand(N, 0);
+}
+
+/// CreateStackTemporary - Create a stack temporary, suitable for holding the
+/// specified value type.
+SDOperand SelectionDAG::CreateStackTemporary(MVT::ValueType VT) {
+ MachineFrameInfo *FrameInfo = getMachineFunction().getFrameInfo();
+ unsigned ByteSize = MVT::getSizeInBits(VT)/8;
+ const Type *Ty = MVT::getTypeForValueType(VT);
+ unsigned StackAlign = (unsigned)TLI.getTargetData()->getPrefTypeAlignment(Ty);
+ int FrameIdx = FrameInfo->CreateStackObject(ByteSize, StackAlign);
+ return getFrameIndex(FrameIdx, TLI.getPointerTy());
+}
+
+
SDOperand SelectionDAG::FoldSetCC(MVT::ValueType VT, SDOperand N1,
SDOperand N2, ISD::CondCode Cond) {
// These setcc operations always fold.
}
}
}
- if (ConstantFPSDNode *N1C = dyn_cast<ConstantFPSDNode>(N1.Val))
+ if (ConstantFPSDNode *N1C = dyn_cast<ConstantFPSDNode>(N1.Val)) {
if (ConstantFPSDNode *N2C = dyn_cast<ConstantFPSDNode>(N2.Val)) {
+ // No compile time operations on this type yet.
+ if (N1C->getValueType(0) == MVT::ppcf128)
+ return SDOperand();
APFloat::cmpResult R = N1C->getValueAPF().compare(N2C->getValueAPF());
switch (Cond) {
// Ensure that the constant occurs on the RHS.
return getSetCC(VT, N2, N1, ISD::getSetCCSwappedOperands(Cond));
}
-
+ }
+
// Could not fold it.
return SDOperand();
}
/// known to be either zero or one and return them in the KnownZero/KnownOne
/// bitsets. This code only analyzes bits in Mask, in order to short-circuit
/// processing.
-void SelectionDAG::ComputeMaskedBits(SDOperand Op, uint64_t Mask,
- uint64_t &KnownZero, uint64_t &KnownOne,
+void SelectionDAG::ComputeMaskedBits(SDOperand Op, const APInt &Mask,
+ APInt &KnownZero, APInt &KnownOne,
unsigned Depth) const {
- KnownZero = KnownOne = 0; // Don't know anything.
+ unsigned BitWidth = Mask.getBitWidth();
+ assert(BitWidth == MVT::getSizeInBits(Op.getValueType()) &&
+ "Mask size mismatches value type size!");
+
+ KnownZero = KnownOne = APInt(BitWidth, 0); // Don't know anything.
if (Depth == 6 || Mask == 0)
return; // Limit search depth.
- // The masks are not wide enough to represent this type! Should use APInt.
- if (Op.getValueType() == MVT::i128)
- return;
-
- uint64_t KnownZero2, KnownOne2;
+ APInt KnownZero2, KnownOne2;
switch (Op.getOpcode()) {
case ISD::Constant:
// We know all of the bits for a constant!
- KnownOne = cast<ConstantSDNode>(Op)->getValue() & Mask;
+ KnownOne = cast<ConstantSDNode>(Op)->getAPIntValue() & Mask;
KnownZero = ~KnownOne & Mask;
return;
case ISD::AND:
// If either the LHS or the RHS are Zero, the result is zero.
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
- Mask &= ~KnownZero;
- ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2, 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?");
return;
case ISD::OR:
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
- Mask &= ~KnownOne;
- ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2, 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?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
// Output known-0 bits are known if clear or set in both the LHS & RHS.
- uint64_t KnownZeroOut = (KnownZero & KnownZero2) | (KnownOne & KnownOne2);
+ APInt KnownZeroOut = (KnownZero & KnownZero2) | (KnownOne & KnownOne2);
// Output known-1 are known to be set if set in only one of the LHS, RHS.
KnownOne = (KnownZero & KnownOne2) | (KnownOne & KnownZero2);
KnownZero = KnownZeroOut;
return;
case ISD::SETCC:
// If we know the result of a setcc has the top bits zero, use this info.
- if (TLI.getSetCCResultContents() == TargetLowering::ZeroOrOneSetCCResult)
- KnownZero |= (MVT::getIntVTBitMask(Op.getValueType()) ^ 1ULL);
+ if (TLI.getSetCCResultContents() == TargetLowering::ZeroOrOneSetCCResult &&
+ BitWidth > 1)
+ KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - 1);
return;
case ISD::SHL:
// (shl X, C1) & C2 == 0 iff (X & C2 >>u C1) == 0
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
- ComputeMaskedBits(Op.getOperand(0), Mask >> SA->getValue(),
+ ComputeMaskedBits(Op.getOperand(0), Mask.lshr(SA->getValue()),
KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
KnownZero <<= SA->getValue();
KnownOne <<= SA->getValue();
- KnownZero |= (1ULL << SA->getValue())-1; // low bits known zero.
+ // low bits known zero.
+ KnownZero |= APInt::getLowBitsSet(BitWidth, SA->getValue());
}
return;
case ISD::SRL:
// (ushr X, C1) & C2 == 0 iff (-1 >> C1) & C2 == 0
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
- MVT::ValueType VT = Op.getValueType();
unsigned ShAmt = SA->getValue();
- uint64_t TypeMask = MVT::getIntVTBitMask(VT);
- ComputeMaskedBits(Op.getOperand(0), (Mask << ShAmt) & TypeMask,
+ ComputeMaskedBits(Op.getOperand(0), (Mask << ShAmt),
KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
- KnownZero &= TypeMask;
- KnownOne &= TypeMask;
- KnownZero >>= ShAmt;
- KnownOne >>= ShAmt;
+ KnownZero = KnownZero.lshr(ShAmt);
+ KnownOne = KnownOne.lshr(ShAmt);
- uint64_t HighBits = (1ULL << ShAmt)-1;
- HighBits <<= MVT::getSizeInBits(VT)-ShAmt;
+ APInt HighBits = APInt::getHighBitsSet(BitWidth, ShAmt) & Mask;
KnownZero |= HighBits; // High bits known zero.
}
return;
case ISD::SRA:
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
- MVT::ValueType VT = Op.getValueType();
unsigned ShAmt = SA->getValue();
- // Compute the new bits that are at the top now.
- uint64_t TypeMask = MVT::getIntVTBitMask(VT);
-
- uint64_t InDemandedMask = (Mask << ShAmt) & TypeMask;
+ APInt InDemandedMask = (Mask << ShAmt);
// If any of the demanded bits are produced by the sign extension, we also
// demand the input sign bit.
- uint64_t HighBits = (1ULL << ShAmt)-1;
- HighBits <<= MVT::getSizeInBits(VT) - ShAmt;
- if (HighBits & Mask)
- InDemandedMask |= MVT::getIntVTSignBit(VT);
+ 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 &= TypeMask;
- KnownOne &= TypeMask;
- KnownZero >>= ShAmt;
- KnownOne >>= ShAmt;
+ KnownZero = KnownZero.lshr(ShAmt);
+ KnownOne = KnownOne.lshr(ShAmt);
// Handle the sign bits.
- uint64_t SignBit = MVT::getIntVTSignBit(VT);
- SignBit >>= ShAmt; // Adjust to where it is now in the mask.
+ APInt SignBit = APInt::getSignBit(BitWidth);
+ SignBit = SignBit.lshr(ShAmt); // Adjust to where it is now in the mask.
- if (KnownZero & SignBit) {
+ if (KnownZero.intersects(SignBit)) {
KnownZero |= HighBits; // New bits are known zero.
- } else if (KnownOne & SignBit) {
+ } else if (KnownOne.intersects(SignBit)) {
KnownOne |= HighBits; // New bits are known one.
}
}
return;
case ISD::SIGN_EXTEND_INREG: {
MVT::ValueType EVT = cast<VTSDNode>(Op.getOperand(1))->getVT();
+ unsigned EBits = MVT::getSizeInBits(EVT);
// Sign extension. Compute the demanded bits in the result that are not
// present in the input.
- uint64_t NewBits = ~MVT::getIntVTBitMask(EVT) & Mask;
+ APInt NewBits = APInt::getHighBitsSet(BitWidth, BitWidth - EBits) & Mask;
- uint64_t InSignBit = MVT::getIntVTSignBit(EVT);
- int64_t InputDemandedBits = Mask & MVT::getIntVTBitMask(EVT);
+ APInt InSignBit = APInt::getSignBit(EBits);
+ APInt InputDemandedBits = Mask & APInt::getLowBitsSet(BitWidth, EBits);
// If the sign extended bits are demanded, we know that the sign
// bit is demanded.
- if (NewBits)
+ InSignBit.zext(BitWidth);
+ if (NewBits.getBoolValue())
InputDemandedBits |= InSignBit;
ComputeMaskedBits(Op.getOperand(0), InputDemandedBits,
// If the sign bit of the input is known set or clear, then we know the
// top bits of the result.
- if (KnownZero & InSignBit) { // Input sign bit known clear
+ if (KnownZero.intersects(InSignBit)) { // Input sign bit known clear
KnownZero |= NewBits;
KnownOne &= ~NewBits;
- } else if (KnownOne & InSignBit) { // Input sign bit known set
+ } else if (KnownOne.intersects(InSignBit)) { // Input sign bit known set
KnownOne |= NewBits;
KnownZero &= ~NewBits;
} else { // Input sign bit unknown
case ISD::CTTZ:
case ISD::CTLZ:
case ISD::CTPOP: {
- MVT::ValueType VT = Op.getValueType();
- unsigned LowBits = Log2_32(MVT::getSizeInBits(VT))+1;
- KnownZero = ~((1ULL << LowBits)-1) & MVT::getIntVTBitMask(VT);
- KnownOne = 0;
+ unsigned LowBits = Log2_32(BitWidth)+1;
+ KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - LowBits);
+ KnownOne = APInt(BitWidth, 0);
return;
}
case ISD::LOAD: {
if (ISD::isZEXTLoad(Op.Val)) {
LoadSDNode *LD = cast<LoadSDNode>(Op);
- MVT::ValueType VT = LD->getLoadedVT();
- KnownZero |= ~MVT::getIntVTBitMask(VT) & Mask;
+ MVT::ValueType VT = LD->getMemoryVT();
+ unsigned MemBits = MVT::getSizeInBits(VT);
+ KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - MemBits) & Mask;
}
return;
}
case ISD::ZERO_EXTEND: {
- uint64_t InMask = MVT::getIntVTBitMask(Op.getOperand(0).getValueType());
- uint64_t NewBits = (~InMask) & Mask;
- ComputeMaskedBits(Op.getOperand(0), Mask & InMask, KnownZero,
- KnownOne, Depth+1);
- KnownZero |= NewBits & Mask;
- KnownOne &= ~NewBits;
+ MVT::ValueType InVT = Op.getOperand(0).getValueType();
+ unsigned InBits = MVT::getSizeInBits(InVT);
+ APInt NewBits = APInt::getHighBitsSet(BitWidth, BitWidth - InBits) & Mask;
+ APInt InMask = Mask;
+ InMask.trunc(InBits);
+ KnownZero.trunc(InBits);
+ KnownOne.trunc(InBits);
+ ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
+ KnownZero.zext(BitWidth);
+ KnownOne.zext(BitWidth);
+ KnownZero |= NewBits;
return;
}
case ISD::SIGN_EXTEND: {
MVT::ValueType InVT = Op.getOperand(0).getValueType();
- unsigned InBits = MVT::getSizeInBits(InVT);
- uint64_t InMask = MVT::getIntVTBitMask(InVT);
- uint64_t InSignBit = 1ULL << (InBits-1);
- uint64_t NewBits = (~InMask) & Mask;
- uint64_t InDemandedBits = Mask & InMask;
+ unsigned InBits = MVT::getSizeInBits(InVT);
+ APInt InSignBit = APInt::getSignBit(InBits);
+ APInt NewBits = APInt::getHighBitsSet(BitWidth, BitWidth - InBits) & Mask;
+ APInt InMask = Mask;
+ InMask.trunc(InBits);
// If any of the sign extended bits are demanded, we know that the sign
- // bit is demanded.
- if (NewBits & Mask)
- InDemandedBits |= InSignBit;
-
- ComputeMaskedBits(Op.getOperand(0), InDemandedBits, KnownZero,
- KnownOne, Depth+1);
- // If the sign bit is known zero or one, the top bits match.
- if (KnownZero & InSignBit) {
+ // bit is demanded. Temporarily set this bit in the mask for our callee.
+ if (NewBits.getBoolValue())
+ InMask |= InSignBit;
+
+ KnownZero.trunc(InBits);
+ KnownOne.trunc(InBits);
+ ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
+
+ // Note if the sign bit is known to be zero or one.
+ bool SignBitKnownZero = KnownZero.isNegative();
+ bool SignBitKnownOne = KnownOne.isNegative();
+ assert(!(SignBitKnownZero && SignBitKnownOne) &&
+ "Sign bit can't be known to be both zero and one!");
+
+ // If the sign bit wasn't actually demanded by our caller, we don't
+ // want it set in the KnownZero and KnownOne result values. Reset the
+ // mask and reapply it to the result values.
+ InMask = Mask;
+ InMask.trunc(InBits);
+ KnownZero &= InMask;
+ KnownOne &= InMask;
+
+ KnownZero.zext(BitWidth);
+ KnownOne.zext(BitWidth);
+
+ // If the sign bit is known zero or one, the top bits match.
+ if (SignBitKnownZero)
KnownZero |= NewBits;
- KnownOne &= ~NewBits;
- } else if (KnownOne & InSignBit) {
+ else if (SignBitKnownOne)
KnownOne |= NewBits;
- KnownZero &= ~NewBits;
- } else { // Otherwise, top bits aren't known.
- KnownOne &= ~NewBits;
- KnownZero &= ~NewBits;
- }
return;
}
case ISD::ANY_EXTEND: {
- MVT::ValueType VT = Op.getOperand(0).getValueType();
- ComputeMaskedBits(Op.getOperand(0), Mask & MVT::getIntVTBitMask(VT),
- KnownZero, KnownOne, Depth+1);
+ MVT::ValueType InVT = Op.getOperand(0).getValueType();
+ unsigned InBits = MVT::getSizeInBits(InVT);
+ APInt InMask = Mask;
+ InMask.trunc(InBits);
+ KnownZero.trunc(InBits);
+ KnownOne.trunc(InBits);
+ ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
+ KnownZero.zext(BitWidth);
+ KnownOne.zext(BitWidth);
return;
}
case ISD::TRUNCATE: {
- ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero, KnownOne, Depth+1);
+ MVT::ValueType InVT = Op.getOperand(0).getValueType();
+ unsigned InBits = MVT::getSizeInBits(InVT);
+ APInt InMask = Mask;
+ InMask.zext(InBits);
+ KnownZero.zext(InBits);
+ KnownOne.zext(InBits);
+ ComputeMaskedBits(Op.getOperand(0), InMask, KnownZero, KnownOne, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
- uint64_t OutMask = MVT::getIntVTBitMask(Op.getValueType());
- KnownZero &= OutMask;
- KnownOne &= OutMask;
+ KnownZero.trunc(BitWidth);
+ KnownOne.trunc(BitWidth);
break;
}
case ISD::AssertZext: {
MVT::ValueType VT = cast<VTSDNode>(Op.getOperand(1))->getVT();
- uint64_t InMask = MVT::getIntVTBitMask(VT);
+ APInt InMask = APInt::getLowBitsSet(BitWidth, MVT::getSizeInBits(VT));
ComputeMaskedBits(Op.getOperand(0), Mask & InMask, KnownZero,
KnownOne, Depth+1);
KnownZero |= (~InMask) & Mask;
return;
}
+ case ISD::FGETSIGN:
+ // All bits are zero except the low bit.
+ KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - 1);
+ return;
+
case ISD::ADD: {
// If either the LHS or the RHS are Zero, the result is zero.
ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne, Depth+1);
// Output known-0 bits are known if clear or set in both the low clear bits
// common to both LHS & RHS. For example, 8+(X<<3) is known to have the
// low 3 bits clear.
- uint64_t KnownZeroOut = std::min(CountTrailingZeros_64(~KnownZero),
- CountTrailingZeros_64(~KnownZero2));
+ unsigned KnownZeroOut = std::min(KnownZero.countTrailingOnes(),
+ KnownZero2.countTrailingOnes());
- KnownZero = (1ULL << KnownZeroOut) - 1;
- KnownOne = 0;
+ KnownZero = APInt::getLowBitsSet(BitWidth, KnownZeroOut);
+ KnownOne = APInt(BitWidth, 0);
return;
}
case ISD::SUB: {
// We know that the top bits of C-X are clear if X contains less bits
// than C (i.e. no wrap-around can happen). For example, 20-X is
// positive if we can prove that X is >= 0 and < 16.
- MVT::ValueType VT = CLHS->getValueType(0);
- if ((CLHS->getValue() & MVT::getIntVTSignBit(VT)) == 0) { // sign bit clear
- unsigned NLZ = CountLeadingZeros_64(CLHS->getValue()+1);
- uint64_t MaskV = (1ULL << (63-NLZ))-1; // NLZ can't be 64 with no sign bit
- MaskV = ~MaskV & MVT::getIntVTBitMask(VT);
+ if (CLHS->getAPIntValue().isNonNegative()) {
+ unsigned NLZ = (CLHS->getAPIntValue()+1).countLeadingZeros();
+ // NLZ can't be BitWidth with no sign bit
+ APInt MaskV = APInt::getHighBitsSet(BitWidth, NLZ+1);
ComputeMaskedBits(Op.getOperand(1), MaskV, KnownZero, KnownOne, Depth+1);
// If all of the MaskV bits are known to be zero, then we know the output
// top bits are zero, because we now know that the output is from [0-C].
if ((KnownZero & MaskV) == MaskV) {
- unsigned NLZ2 = CountLeadingZeros_64(CLHS->getValue());
- KnownZero = ~((1ULL << (64-NLZ2))-1) & Mask; // Top bits known zero.
- KnownOne = 0; // No one bits known.
+ unsigned NLZ2 = CLHS->getAPIntValue().countLeadingZeros();
+ // Top bits known zero.
+ KnownZero = APInt::getHighBitsSet(BitWidth, NLZ2) & Mask;
+ KnownOne = APInt(BitWidth, 0); // No one bits known.
} else {
- KnownZero = KnownOne = 0; // Otherwise, nothing known.
+ KnownZero = KnownOne = APInt(BitWidth, 0); // Otherwise, nothing known.
}
}
return;
}
}
+/// ComputeMaskedBits - This is a wrapper around the APInt-using
+/// form of ComputeMaskedBits for use by clients that haven't been converted
+/// to APInt yet.
+void SelectionDAG::ComputeMaskedBits(SDOperand Op, uint64_t Mask,
+ uint64_t &KnownZero, uint64_t &KnownOne,
+ unsigned Depth) const {
+ // The masks are not wide enough to represent this type! Should use APInt.
+ if (Op.getValueType() == MVT::i128)
+ return;
+
+ unsigned NumBits = MVT::getSizeInBits(Op.getValueType());
+ APInt APIntMask(NumBits, Mask);
+ APInt APIntKnownZero(NumBits, 0);
+ APInt APIntKnownOne(NumBits, 0);
+ ComputeMaskedBits(Op, APIntMask, APIntKnownZero, APIntKnownOne, Depth);
+ KnownZero = APIntKnownZero.getZExtValue();
+ KnownOne = APIntKnownOne.getZExtValue();
+}
+
/// ComputeNumSignBits - Return the number of times the sign bit of the
/// register is replicated into the other bits. We know that at least 1 bit
/// is always equal to the sign bit (itself), but other cases can give us
switch (ExtType) {
default: break;
case ISD::SEXTLOAD: // '17' bits known
- Tmp = MVT::getSizeInBits(LD->getLoadedVT());
+ Tmp = MVT::getSizeInBits(LD->getMemoryVT());
return VTBits-Tmp+1;
case ISD::ZEXTLOAD: // '16' bits known
- Tmp = MVT::getSizeInBits(LD->getLoadedVT());
+ Tmp = MVT::getSizeInBits(LD->getMemoryVT());
return VTBits-Tmp;
}
}
}
+bool SelectionDAG::isVerifiedDebugInfoDesc(SDOperand Op) const {
+ GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op);
+ if (!GA) return false;
+ GlobalVariable *GV = dyn_cast<GlobalVariable>(GA->getGlobal());
+ if (!GV) return false;
+ MachineModuleInfo *MMI = getMachineModuleInfo();
+ return MMI && MMI->hasDebugInfo() && MMI->isVerified(GV);
+}
+
+
/// getNode - Gets or creates the specified node.
///
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT) {
case ISD::UINT_TO_FP:
case ISD::SINT_TO_FP: {
const uint64_t zero[] = {0, 0};
+ // No compile time operations on this type.
+ if (VT==MVT::ppcf128)
+ break;
APFloat apf = APFloat(APInt(MVT::getSizeInBits(VT), 2, zero));
- (void)apf.convertFromInteger(&Val,
+ (void)apf.convertFromZeroExtendedInteger(&Val,
MVT::getSizeInBits(Operand.getValueType()),
Opcode==ISD::SINT_TO_FP,
- APFloat::rmTowardZero);
+ APFloat::rmNearestTiesToEven);
return getConstantFP(apf, VT);
}
case ISD::BIT_CONVERT:
// Constant fold unary operations with a floating point constant operand.
if (ConstantFPSDNode *C = dyn_cast<ConstantFPSDNode>(Operand.Val)) {
APFloat V = C->getValueAPF(); // make copy
- 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:
- // This can return overflow, underflow, or inexact; we don't care.
- // FIXME need to be more flexible about rounding mode.
- // FIXME need to be more flexible about rounding mode.
- (void) V.convert(VT==MVT::f32 ? APFloat::IEEEsingle :
- VT==MVT::f64 ? APFloat::IEEEdouble :
- VT==MVT::f80 ? APFloat::x87DoubleExtended :
- VT==MVT::f128 ? APFloat::IEEEquad :
- APFloat::Bogus,
- APFloat::rmNearestTiesToEven);
- return getConstantFP(V, VT);
- case ISD::FP_TO_SINT:
- case ISD::FP_TO_UINT: {
- integerPart x;
- assert(integerPartWidth >= 64);
- // FIXME need to be more flexible about rounding mode.
- APFloat::opStatus s = V.convertToInteger(&x, 64U,
- Opcode==ISD::FP_TO_SINT,
- APFloat::rmTowardZero);
- if (s==APFloat::opInvalidOp) // inexact is OK, in fact usual
+ 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:
+ // This can return overflow, underflow, or inexact; we don't care.
+ // FIXME need to be more flexible about rounding mode.
+ (void) V.convert(VT==MVT::f32 ? APFloat::IEEEsingle :
+ VT==MVT::f64 ? APFloat::IEEEdouble :
+ VT==MVT::f80 ? APFloat::x87DoubleExtended :
+ VT==MVT::f128 ? APFloat::IEEEquad :
+ APFloat::Bogus,
+ APFloat::rmNearestTiesToEven);
+ return getConstantFP(V, VT);
+ case ISD::FP_TO_SINT:
+ case ISD::FP_TO_UINT: {
+ integerPart x;
+ assert(integerPartWidth >= 64);
+ // FIXME need to be more flexible about rounding mode.
+ APFloat::opStatus s = V.convertToInteger(&x, 64U,
+ Opcode==ISD::FP_TO_SINT,
+ APFloat::rmTowardZero);
+ if (s==APFloat::opInvalidOp) // inexact is OK, in fact usual
+ break;
+ return getConstant(x, VT);
+ }
+ case ISD::BIT_CONVERT:
+ if (VT == MVT::i32 && C->getValueType(0) == MVT::f32)
+ return getConstant((uint32_t)V.convertToAPInt().getZExtValue(), VT);
+ else if (VT == MVT::i64 && C->getValueType(0) == MVT::f64)
+ return getConstant(V.convertToAPInt().getZExtValue(), VT);
break;
- return getConstant(x, VT);
- }
- case ISD::BIT_CONVERT:
- if (VT == MVT::i32 && C->getValueType(0) == MVT::f32)
- return getConstant((uint32_t)V.convertToAPInt().getZExtValue(), VT);
- else if (VT == MVT::i64 && C->getValueType(0) == MVT::f64)
- return getConstant(V.convertToAPInt().getZExtValue(), VT);
- break;
+ }
}
}
switch (Opcode) {
case ISD::TokenFactor:
return Operand; // Factor of one node? No factor.
- case ISD::FP_ROUND:
+ case ISD::FP_ROUND: assert(0 && "Invalid method to make FP_ROUND node");
case ISD::FP_EXTEND:
assert(MVT::isFloatingPoint(VT) &&
MVT::isFloatingPoint(Operand.getValueType()) && "Invalid FP cast!");
+ if (Operand.getValueType() == VT) return Operand; // noop conversion.
break;
- case ISD::SIGN_EXTEND:
+ case ISD::SIGN_EXTEND:
assert(MVT::isInteger(VT) && MVT::isInteger(Operand.getValueType()) &&
"Invalid SIGN_EXTEND!");
if (Operand.getValueType() == VT) return Operand; // noop extension
- assert(Operand.getValueType() < VT && "Invalid sext node, dst < src!");
+ assert(MVT::getSizeInBits(Operand.getValueType()) < MVT::getSizeInBits(VT)
+ && "Invalid sext node, dst < src!");
if (OpOpcode == ISD::SIGN_EXTEND || OpOpcode == ISD::ZERO_EXTEND)
return getNode(OpOpcode, VT, Operand.Val->getOperand(0));
break;
assert(MVT::isInteger(VT) && MVT::isInteger(Operand.getValueType()) &&
"Invalid ZERO_EXTEND!");
if (Operand.getValueType() == VT) return Operand; // noop extension
- assert(Operand.getValueType() < VT && "Invalid zext node, dst < src!");
+ assert(MVT::getSizeInBits(Operand.getValueType()) < MVT::getSizeInBits(VT)
+ && "Invalid zext node, dst < src!");
if (OpOpcode == ISD::ZERO_EXTEND) // (zext (zext x)) -> (zext x)
return getNode(ISD::ZERO_EXTEND, VT, Operand.Val->getOperand(0));
break;
assert(MVT::isInteger(VT) && MVT::isInteger(Operand.getValueType()) &&
"Invalid ANY_EXTEND!");
if (Operand.getValueType() == VT) return Operand; // noop extension
- assert(Operand.getValueType() < VT && "Invalid anyext node, dst < src!");
+ assert(MVT::getSizeInBits(Operand.getValueType()) < MVT::getSizeInBits(VT)
+ && "Invalid anyext node, dst < src!");
if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND)
// (ext (zext x)) -> (zext x) and (ext (sext x)) -> (sext x)
return getNode(OpOpcode, VT, Operand.Val->getOperand(0));
assert(MVT::isInteger(VT) && MVT::isInteger(Operand.getValueType()) &&
"Invalid TRUNCATE!");
if (Operand.getValueType() == VT) return Operand; // noop truncate
- assert(Operand.getValueType() > VT && "Invalid truncate node, src < dst!");
+ assert(MVT::getSizeInBits(Operand.getValueType()) > MVT::getSizeInBits(VT)
+ && "Invalid truncate node, src < dst!");
if (OpOpcode == ISD::TRUNCATE)
return getNode(ISD::TRUNCATE, VT, Operand.Val->getOperand(0));
else if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND ||
OpOpcode == ISD::ANY_EXTEND) {
// If the source is smaller than the dest, we still need an extend.
- if (Operand.Val->getOperand(0).getValueType() < VT)
+ if (MVT::getSizeInBits(Operand.Val->getOperand(0).getValueType())
+ < MVT::getSizeInBits(VT))
return getNode(OpOpcode, VT, Operand.Val->getOperand(0));
- else if (Operand.Val->getOperand(0).getValueType() > VT)
+ else if (MVT::getSizeInBits(Operand.Val->getOperand(0).getValueType())
+ > MVT::getSizeInBits(VT))
return getNode(ISD::TRUNCATE, VT, Operand.Val->getOperand(0));
else
return Operand.Val->getOperand(0);
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand N1, SDOperand N2) {
-#ifndef NDEBUG
+ ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val);
+ ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val);
switch (Opcode) {
+ default: break;
case ISD::TokenFactor:
assert(VT == MVT::Other && N1.getValueType() == MVT::Other &&
N2.getValueType() == MVT::Other && "Invalid token factor!");
+ // Fold trivial token factors.
+ if (N1.getOpcode() == ISD::EntryToken) return N2;
+ if (N2.getOpcode() == ISD::EntryToken) return N1;
break;
case ISD::AND:
+ assert(MVT::isInteger(VT) && N1.getValueType() == N2.getValueType() &&
+ N1.getValueType() == VT && "Binary operator types must match!");
+ // (X & 0) -> 0. This commonly occurs when legalizing i64 values, so it's
+ // worth handling here.
+ if (N2C && N2C->getValue() == 0)
+ return N2;
+ if (N2C && N2C->isAllOnesValue()) // X & -1 -> X
+ return N1;
+ break;
case ISD::OR:
case ISD::XOR:
+ assert(MVT::isInteger(VT) && N1.getValueType() == N2.getValueType() &&
+ N1.getValueType() == VT && "Binary operator types must match!");
+ // (X ^| 0) -> X. This commonly occurs when legalizing i64 values, so it's
+ // worth handling here.
+ if (N2C && N2C->getValue() == 0)
+ return N1;
+ break;
case ISD::UDIV:
case ISD::UREM:
case ISD::MULHU:
case ISD::MUL:
case ISD::SDIV:
case ISD::SREM:
- assert(MVT::isInteger(N1.getValueType()) && "Should use F* for FP ops");
- // fall through.
case ISD::FADD:
case ISD::FSUB:
case ISD::FMUL:
assert(VT == N1.getValueType() && "Not an inreg round!");
assert(MVT::isFloatingPoint(VT) && MVT::isFloatingPoint(EVT) &&
"Cannot FP_ROUND_INREG integer types");
- assert(EVT <= VT && "Not rounding down!");
+ assert(MVT::getSizeInBits(EVT) <= MVT::getSizeInBits(VT) &&
+ "Not rounding down!");
+ if (cast<VTSDNode>(N2)->getVT() == VT) return N1; // Not actually rounding.
break;
}
+ case ISD::FP_ROUND:
+ assert(MVT::isFloatingPoint(VT) &&
+ MVT::isFloatingPoint(N1.getValueType()) &&
+ MVT::getSizeInBits(VT) <= MVT::getSizeInBits(N1.getValueType()) &&
+ isa<ConstantSDNode>(N2) && "Invalid FP_ROUND!");
+ if (N1.getValueType() == VT) return N1; // noop conversion.
+ break;
case ISD::AssertSext:
- case ISD::AssertZext:
- case ISD::SIGN_EXTEND_INREG: {
+ case ISD::AssertZext: {
MVT::ValueType EVT = cast<VTSDNode>(N2)->getVT();
assert(VT == N1.getValueType() && "Not an inreg extend!");
assert(MVT::isInteger(VT) && MVT::isInteger(EVT) &&
"Cannot *_EXTEND_INREG FP types");
- assert(EVT <= VT && "Not extending!");
- }
-
- default: break;
+ assert(MVT::getSizeInBits(EVT) <= MVT::getSizeInBits(VT) &&
+ "Not extending!");
+ if (VT == EVT) return N1; // noop assertion.
+ break;
}
-#endif
+ case ISD::SIGN_EXTEND_INREG: {
+ MVT::ValueType EVT = cast<VTSDNode>(N2)->getVT();
+ assert(VT == N1.getValueType() && "Not an inreg extend!");
+ assert(MVT::isInteger(VT) && MVT::isInteger(EVT) &&
+ "Cannot *_EXTEND_INREG FP types");
+ assert(MVT::getSizeInBits(EVT) <= MVT::getSizeInBits(VT) &&
+ "Not extending!");
+ if (EVT == VT) return N1; // Not actually extending
- ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val);
- ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val);
- if (N1C) {
- if (Opcode == ISD::SIGN_EXTEND_INREG) {
+ if (N1C) {
int64_t Val = N1C->getValue();
unsigned FromBits = MVT::getSizeInBits(cast<VTSDNode>(N2)->getVT());
Val <<= 64-FromBits;
Val >>= 64-FromBits;
return getConstant(Val, VT);
}
+ break;
+ }
+ case ISD::EXTRACT_VECTOR_ELT:
+ assert(N2C && "Bad EXTRACT_VECTOR_ELT!");
+
+ // EXTRACT_VECTOR_ELT of CONCAT_VECTORS is often formed while lowering is
+ // expanding copies of large vectors from registers.
+ if (N1.getOpcode() == ISD::CONCAT_VECTORS &&
+ N1.getNumOperands() > 0) {
+ unsigned Factor =
+ MVT::getVectorNumElements(N1.getOperand(0).getValueType());
+ return getNode(ISD::EXTRACT_VECTOR_ELT, VT,
+ N1.getOperand(N2C->getValue() / Factor),
+ getConstant(N2C->getValue() % Factor, N2.getValueType()));
+ }
+
+ // EXTRACT_VECTOR_ELT of BUILD_VECTOR is often formed while lowering is
+ // expanding large vector constants.
+ if (N1.getOpcode() == ISD::BUILD_VECTOR)
+ return N1.getOperand(N2C->getValue());
+
+ // EXTRACT_VECTOR_ELT of INSERT_VECTOR_ELT is often formed when vector
+ // operations are lowered to scalars.
+ if (N1.getOpcode() == ISD::INSERT_VECTOR_ELT)
+ if (ConstantSDNode *IEC = dyn_cast<ConstantSDNode>(N1.getOperand(2))) {
+ if (IEC == N2C)
+ return N1.getOperand(1);
+ else
+ return getNode(ISD::EXTRACT_VECTOR_ELT, VT, N1.getOperand(0), N2);
+ }
+ break;
+ case ISD::EXTRACT_ELEMENT:
+ assert(N2C && (unsigned)N2C->getValue() < 2 && "Bad EXTRACT_ELEMENT!");
+ // EXTRACT_ELEMENT of BUILD_PAIR is often formed while legalize is expanding
+ // 64-bit integers into 32-bit parts. Instead of building the extract of
+ // the BUILD_PAIR, only to have legalize rip it apart, just do it now.
+ if (N1.getOpcode() == ISD::BUILD_PAIR)
+ return N1.getOperand(N2C->getValue());
+
+ // EXTRACT_ELEMENT of a constant int is also very common.
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N1)) {
+ unsigned Shift = MVT::getSizeInBits(VT) * N2C->getValue();
+ return getConstant(C->getValue() >> Shift, VT);
+ }
+ break;
+ case ISD::EXTRACT_SUBVECTOR:
+ if (N1.getValueType() == VT) // Trivial extraction.
+ return N1;
+ break;
+ }
+
+ if (N1C) {
if (N2C) {
uint64_t C1 = N1C->getValue(), C2 = N2C->getValue();
switch (Opcode) {
}
}
+ // Constant fold FP operations.
ConstantFPSDNode *N1CFP = dyn_cast<ConstantFPSDNode>(N1.Val);
ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.Val);
if (N1CFP) {
- if (N2CFP) {
+ if (!N2CFP && isCommutativeBinOp(Opcode)) {
+ // Cannonicalize constant to RHS if commutative
+ 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)
+ if (s != APFloat::opInvalidOp)
return getConstantFP(V1, VT);
break;
case ISD::FSUB:
return getConstantFP(V1, VT);
default: break;
}
- } else { // Cannonicalize constant to RHS if commutative
- if (isCommutativeBinOp(Opcode)) {
- std::swap(N1CFP, N2CFP);
- std::swap(N1, N2);
- }
}
}
}
}
- // Fold operations.
- switch (Opcode) {
- case ISD::TokenFactor:
- // Fold trivial token factors.
- if (N1.getOpcode() == ISD::EntryToken) return N2;
- if (N2.getOpcode() == ISD::EntryToken) return N1;
- break;
-
- case ISD::AND:
- // (X & 0) -> 0. This commonly occurs when legalizing i64 values, so it's
- // worth handling here.
- if (N2C && N2C->getValue() == 0)
- return N2;
- break;
- case ISD::OR:
- case ISD::XOR:
- // (X ^| 0) -> X. This commonly occurs when legalizing i64 values, so it's
- // worth handling here.
- if (N2C && N2C->getValue() == 0)
- return N1;
- break;
- case ISD::FP_ROUND_INREG:
- if (cast<VTSDNode>(N2)->getVT() == VT) return N1; // Not actually rounding.
- break;
- case ISD::SIGN_EXTEND_INREG: {
- MVT::ValueType EVT = cast<VTSDNode>(N2)->getVT();
- if (EVT == VT) return N1; // Not actually extending
- break;
- }
- case ISD::EXTRACT_VECTOR_ELT:
- assert(N2C && "Bad EXTRACT_VECTOR_ELT!");
-
- // EXTRACT_VECTOR_ELT of CONCAT_VECTORS is often formed while lowering is
- // expanding copies of large vectors from registers.
- if (N1.getOpcode() == ISD::CONCAT_VECTORS &&
- N1.getNumOperands() > 0) {
- unsigned Factor =
- MVT::getVectorNumElements(N1.getOperand(0).getValueType());
- return getNode(ISD::EXTRACT_VECTOR_ELT, VT,
- N1.getOperand(N2C->getValue() / Factor),
- getConstant(N2C->getValue() % Factor, N2.getValueType()));
- }
-
- // EXTRACT_VECTOR_ELT of BUILD_VECTOR is often formed while lowering is
- // expanding large vector constants.
- if (N1.getOpcode() == ISD::BUILD_VECTOR)
- return N1.getOperand(N2C->getValue());
-
- // EXTRACT_VECTOR_ELT of INSERT_VECTOR_ELT is often formed when vector
- // operations are lowered to scalars.
- if (N1.getOpcode() == ISD::INSERT_VECTOR_ELT)
- if (ConstantSDNode *IEC = dyn_cast<ConstantSDNode>(N1.getOperand(2))) {
- if (IEC == N2C)
- return N1.getOperand(1);
- else
- return getNode(ISD::EXTRACT_VECTOR_ELT, VT, N1.getOperand(0), N2);
- }
- break;
- case ISD::EXTRACT_ELEMENT:
- assert(N2C && (unsigned)N2C->getValue() < 2 && "Bad EXTRACT_ELEMENT!");
-
- // EXTRACT_ELEMENT of BUILD_PAIR is often formed while legalize is expanding
- // 64-bit integers into 32-bit parts. Instead of building the extract of
- // the BUILD_PAIR, only to have legalize rip it apart, just do it now.
- if (N1.getOpcode() == ISD::BUILD_PAIR)
- return N1.getOperand(N2C->getValue());
-
- // EXTRACT_ELEMENT of a constant int is also very common.
- if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N1)) {
- unsigned Shift = MVT::getSizeInBits(VT) * N2C->getValue();
- return getConstant(C->getValue() >> Shift, VT);
- }
- break;
-
- // FIXME: figure out how to safely handle things like
- // int foo(int x) { return 1 << (x & 255); }
- // int bar() { return foo(256); }
-#if 0
- case ISD::SHL:
- case ISD::SRL:
- case ISD::SRA:
- if (N2.getOpcode() == ISD::SIGN_EXTEND_INREG &&
- cast<VTSDNode>(N2.getOperand(1))->getVT() != MVT::i1)
- return getNode(Opcode, VT, N1, N2.getOperand(0));
- else if (N2.getOpcode() == ISD::AND)
- if (ConstantSDNode *AndRHS = dyn_cast<ConstantSDNode>(N2.getOperand(1))) {
- // If the and is only masking out bits that cannot effect the shift,
- // eliminate the and.
- unsigned NumBits = MVT::getSizeInBits(VT);
- if ((AndRHS->getValue() & (NumBits-1)) == NumBits-1)
- return getNode(Opcode, VT, N1, N2.getOperand(0));
- }
- break;
-#endif
- }
-
// Memoize this node if possible.
SDNode *N;
SDVTList VTs = getVTList(VT);
break;
}
case ISD::SELECT:
- if (N1C)
- if (N1C->getValue())
+ if (N1C) {
+ if (N1C->getValue())
return N2; // select true, X, Y -> X
else
return N3; // select false, X, Y -> Y
+ }
if (N2 == N3) return N2; // select C, X, X -> X
break;
case ISD::BRCOND:
- if (N2C)
+ if (N2C) {
if (N2C->getValue()) // Unconditional branch
return getNode(ISD::BR, MVT::Other, N1, N3);
else
return N1; // Never-taken branch
+ }
break;
case ISD::VECTOR_SHUFFLE:
assert(VT == N1.getValueType() && VT == N2.getValueType() &&
return getNode(Opcode, VT, Ops, 5);
}
+SDOperand SelectionDAG::getMemcpy(SDOperand Chain, SDOperand Dest,
+ SDOperand Src, SDOperand Size,
+ SDOperand Align,
+ SDOperand AlwaysInline) {
+ SDOperand Ops[] = { Chain, Dest, Src, Size, Align, AlwaysInline };
+ return getNode(ISD::MEMCPY, MVT::Other, Ops, 6);
+}
+
+SDOperand SelectionDAG::getMemmove(SDOperand Chain, SDOperand Dest,
+ SDOperand Src, SDOperand Size,
+ SDOperand Align,
+ SDOperand AlwaysInline) {
+ SDOperand Ops[] = { Chain, Dest, Src, Size, Align, AlwaysInline };
+ return getNode(ISD::MEMMOVE, MVT::Other, Ops, 6);
+}
+
+SDOperand SelectionDAG::getMemset(SDOperand Chain, SDOperand Dest,
+ SDOperand Src, SDOperand Size,
+ SDOperand Align,
+ SDOperand AlwaysInline) {
+ SDOperand Ops[] = { Chain, Dest, Src, Size, Align, AlwaysInline };
+ return getNode(ISD::MEMSET, MVT::Other, Ops, 6);
+}
+
+SDOperand SelectionDAG::getAtomic(unsigned Opcode, SDOperand Chain,
+ SDOperand Ptr, SDOperand A2,
+ SDOperand A3, MVT::ValueType VT) {
+ assert(Opcode == ISD::ATOMIC_LCS && "Invalid Atomic Op");
+ SDVTList VTs = getVTList(A2.getValueType(), MVT::Other);
+ FoldingSetNodeID ID;
+ SDOperand Ops[] = {Chain, Ptr, A2, A3};
+ AddNodeIDNode(ID, Opcode, VTs, Ops, 4);
+ ID.AddInteger((unsigned int)VT);
+ void* IP = 0;
+ if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
+ return SDOperand(E, 0);
+ SDNode* N = new AtomicSDNode(Opcode, VTs, Chain, Ptr, A2, A3, VT);
+ CSEMap.InsertNode(N, IP);
+ AllNodes.push_back(N);
+ return SDOperand(N, 0);
+}
+
+SDOperand SelectionDAG::getAtomic(unsigned Opcode, SDOperand Chain,
+ SDOperand Ptr, SDOperand A2,
+ MVT::ValueType VT) {
+ assert((Opcode == ISD::ATOMIC_LAS || Opcode == ISD::ATOMIC_SWAP)
+ && "Invalid Atomic Op");
+ SDVTList VTs = getVTList(A2.getValueType(), MVT::Other);
+ FoldingSetNodeID ID;
+ SDOperand Ops[] = {Chain, Ptr, A2};
+ AddNodeIDNode(ID, Opcode, VTs, Ops, 3);
+ ID.AddInteger((unsigned int)VT);
+ void* IP = 0;
+ if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
+ return SDOperand(E, 0);
+ SDNode* N = new AtomicSDNode(Opcode, VTs, Chain, Ptr, A2, VT);
+ CSEMap.InsertNode(N, IP);
+ AllNodes.push_back(N);
+ return SDOperand(N, 0);
+}
+
SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
SDOperand Chain, SDOperand Ptr,
const Value *SV, int SVOffset,
ID.AddInteger(ISD::UNINDEXED);
ID.AddInteger(ISD::NON_EXTLOAD);
ID.AddInteger((unsigned int)VT);
- ID.AddPointer(SV);
- ID.AddInteger(SVOffset);
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
void *IP = 0;
// If they are asking for an extending load from/to the same thing, return a
// normal load.
if (VT == EVT)
- ExtType = ISD::NON_EXTLOAD;
+ return getLoad(VT, Chain, Ptr, SV, SVOffset, isVolatile, Alignment);
if (MVT::isVector(VT))
assert(EVT == MVT::getVectorElementType(VT) && "Invalid vector extload!");
else
- assert(EVT < VT && "Should only be an extending load, not truncating!");
+ assert(MVT::getSizeInBits(EVT) < MVT::getSizeInBits(VT) &&
+ "Should only be an extending load, not truncating!");
assert((ExtType == ISD::EXTLOAD || MVT::isInteger(VT)) &&
"Cannot sign/zero extend a FP/Vector load!");
assert(MVT::isInteger(VT) == MVT::isInteger(EVT) &&
ID.AddInteger(ISD::UNINDEXED);
ID.AddInteger(ExtType);
ID.AddInteger((unsigned int)EVT);
- ID.AddPointer(SV);
- ID.AddInteger(SVOffset);
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
void *IP = 0;
AddNodeIDNode(ID, ISD::LOAD, VTs, Ops, 3);
ID.AddInteger(AM);
ID.AddInteger(LD->getExtensionType());
- ID.AddInteger((unsigned int)(LD->getLoadedVT()));
- ID.AddPointer(LD->getSrcValue());
- ID.AddInteger(LD->getSrcValueOffset());
+ ID.AddInteger((unsigned int)(LD->getMemoryVT()));
ID.AddInteger(LD->getAlignment());
ID.AddInteger(LD->isVolatile());
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
SDNode *N = new LoadSDNode(Ops, VTs, AM,
- LD->getExtensionType(), LD->getLoadedVT(),
+ LD->getExtensionType(), LD->getMemoryVT(),
LD->getSrcValue(), LD->getSrcValueOffset(),
LD->getAlignment(), LD->isVolatile());
CSEMap.InsertNode(N, IP);
ID.AddInteger(ISD::UNINDEXED);
ID.AddInteger(false);
ID.AddInteger((unsigned int)VT);
- ID.AddPointer(SV);
- ID.AddInteger(SVOffset);
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
void *IP = 0;
int SVOffset, MVT::ValueType SVT,
bool isVolatile, unsigned Alignment) {
MVT::ValueType VT = Val.getValueType();
- bool isTrunc = VT != SVT;
- assert(VT > SVT && "Not a truncation?");
+ if (VT == SVT)
+ return getStore(Chain, Val, Ptr, SV, SVOffset, isVolatile, Alignment);
+
+ assert(MVT::getSizeInBits(VT) > MVT::getSizeInBits(SVT) &&
+ "Not a truncation?");
assert(MVT::isInteger(VT) == MVT::isInteger(SVT) &&
"Can't do FP-INT conversion!");
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::STORE, VTs, Ops, 4);
ID.AddInteger(ISD::UNINDEXED);
- ID.AddInteger(isTrunc);
+ ID.AddInteger(1);
ID.AddInteger((unsigned int)SVT);
- ID.AddPointer(SV);
- ID.AddInteger(SVOffset);
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
- SDNode *N = new StoreSDNode(Ops, VTs, ISD::UNINDEXED, isTrunc,
+ SDNode *N = new StoreSDNode(Ops, VTs, ISD::UNINDEXED, true,
SVT, SV, SVOffset, Alignment, isVolatile);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
AddNodeIDNode(ID, ISD::STORE, VTs, Ops, 4);
ID.AddInteger(AM);
ID.AddInteger(ST->isTruncatingStore());
- ID.AddInteger((unsigned int)(ST->getStoredVT()));
- ID.AddPointer(ST->getSrcValue());
- ID.AddInteger(ST->getSrcValueOffset());
+ ID.AddInteger((unsigned int)(ST->getMemoryVT()));
ID.AddInteger(ST->getAlignment());
ID.AddInteger(ST->isVolatile());
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
SDNode *N = new StoreSDNode(Ops, VTs, AM,
- ST->isTruncatingStore(), ST->getStoredVT(),
+ ST->isTruncatingStore(), ST->getMemoryVT(),
ST->getSrcValue(), ST->getSrcValueOffset(),
ST->getAlignment(), ST->isVolatile());
CSEMap.InsertNode(N, IP);
return SDOperand(N, 0);
}
-SDVTList SelectionDAG::getVTList(MVT::ValueType VT) {
- if (!MVT::isExtendedVT(VT))
- return makeVTList(SDNode::getValueTypeList(VT), 1);
+SDOperand SelectionDAG::getNode(unsigned Opcode, SDVTList VTList) {
+ return getNode(Opcode, VTList, 0, 0);
+}
- for (std::list<std::vector<MVT::ValueType> >::iterator I = VTList.begin(),
- E = VTList.end(); I != E; ++I) {
- if (I->size() == 1 && (*I)[0] == VT)
- return makeVTList(&(*I)[0], 1);
- }
- std::vector<MVT::ValueType> V;
- V.push_back(VT);
- VTList.push_front(V);
- return makeVTList(&(*VTList.begin())[0], 1);
+SDOperand SelectionDAG::getNode(unsigned Opcode, SDVTList VTList,
+ SDOperand N1) {
+ SDOperand Ops[] = { N1 };
+ return getNode(Opcode, VTList, Ops, 1);
+}
+
+SDOperand SelectionDAG::getNode(unsigned Opcode, SDVTList VTList,
+ SDOperand N1, SDOperand N2) {
+ SDOperand Ops[] = { N1, N2 };
+ return getNode(Opcode, VTList, Ops, 2);
+}
+
+SDOperand SelectionDAG::getNode(unsigned Opcode, SDVTList VTList,
+ SDOperand N1, SDOperand N2, SDOperand N3) {
+ SDOperand Ops[] = { N1, N2, N3 };
+ return getNode(Opcode, VTList, Ops, 3);
+}
+
+SDOperand SelectionDAG::getNode(unsigned Opcode, SDVTList VTList,
+ SDOperand N1, SDOperand N2, SDOperand N3,
+ SDOperand N4) {
+ SDOperand Ops[] = { N1, N2, N3, N4 };
+ return getNode(Opcode, VTList, Ops, 4);
+}
+
+SDOperand SelectionDAG::getNode(unsigned Opcode, SDVTList VTList,
+ SDOperand N1, SDOperand N2, SDOperand N3,
+ SDOperand N4, SDOperand N5) {
+ SDOperand Ops[] = { N1, N2, N3, N4, N5 };
+ return getNode(Opcode, VTList, Ops, 5);
+}
+
+SDVTList SelectionDAG::getVTList(MVT::ValueType VT) {
+ return makeVTList(SDNode::getValueTypeList(VT), 1);
}
SDVTList SelectionDAG::getVTList(MVT::ValueType VT1, MVT::ValueType VT2) {
const SDOperand *Ops, unsigned NumOps) {
return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Ops, NumOps).Val;
}
+SDNode *SelectionDAG::getTargetNode(unsigned Opcode, MVT::ValueType VT1,
+ MVT::ValueType VT2) {
+ const MVT::ValueType *VTs = getNodeValueTypes(VT1, VT2);
+ SDOperand Op;
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VTs, 2, &Op, 0).Val;
+}
SDNode *SelectionDAG::getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1) {
const MVT::ValueType *VTs = getNodeValueTypes(VT1, VT2);
const MVT::ValueType *VTs = getNodeValueTypes(VTList);
return getNode(ISD::BUILTIN_OP_END+Opcode, VTs, 4, Ops, NumOps).Val;
}
+SDNode *SelectionDAG::getTargetNode(unsigned Opcode,
+ std::vector<MVT::ValueType> &ResultTys,
+ const SDOperand *Ops, unsigned NumOps) {
+ const MVT::ValueType *VTs = getNodeValueTypes(ResultTys);
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VTs, ResultTys.size(),
+ Ops, NumOps).Val;
+}
+
/// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead.
/// This can cause recursive merging of nodes in the DAG.
///
-/// This version assumes From/To have a single result value.
+/// This version assumes From has a single result value.
///
-void SelectionDAG::ReplaceAllUsesWith(SDOperand FromN, SDOperand ToN,
- std::vector<SDNode*> *Deleted) {
- SDNode *From = FromN.Val, *To = ToN.Val;
- assert(From->getNumValues() == 1 && To->getNumValues() == 1 &&
+void SelectionDAG::ReplaceAllUsesWith(SDOperand FromN, SDOperand To,
+ DAGUpdateListener *UpdateListener) {
+ SDNode *From = FromN.Val;
+ assert(From->getNumValues() == 1 && FromN.ResNo == 0 &&
"Cannot replace with this method!");
- assert(From != To && "Cannot replace uses of with self");
+ assert(From != To.Val && "Cannot replace uses of with self");
while (!From->use_empty()) {
// Process users until they are all gone.
I != E; ++I)
if (I->Val == From) {
From->removeUser(U);
- I->Val = To;
- To->addUser(U);
+ *I = To;
+ To.Val->addUser(U);
}
// Now that we have modified U, add it back to the CSE maps. If it already
// exists there, recursively merge the results together.
if (SDNode *Existing = AddNonLeafNodeToCSEMaps(U)) {
- ReplaceAllUsesWith(U, Existing, Deleted);
- // U is now dead.
- if (Deleted) Deleted->push_back(U);
+ ReplaceAllUsesWith(U, Existing, UpdateListener);
+ // U is now dead. Inform the listener if it exists and delete it.
+ if (UpdateListener)
+ UpdateListener->NodeDeleted(U);
DeleteNodeNotInCSEMaps(U);
+ } else {
+ // If the node doesn't already exist, we updated it. Inform a listener if
+ // it exists.
+ if (UpdateListener)
+ UpdateListener->NodeUpdated(U);
}
}
}
/// values.
///
void SelectionDAG::ReplaceAllUsesWith(SDNode *From, SDNode *To,
- std::vector<SDNode*> *Deleted) {
+ DAGUpdateListener *UpdateListener) {
assert(From != To && "Cannot replace uses of with self");
assert(From->getNumValues() == To->getNumValues() &&
"Cannot use this version of ReplaceAllUsesWith!");
- if (From->getNumValues() == 1) { // If possible, use the faster version.
- ReplaceAllUsesWith(SDOperand(From, 0), SDOperand(To, 0), Deleted);
- return;
- }
+ if (From->getNumValues() == 1) // If possible, use the faster version.
+ return ReplaceAllUsesWith(SDOperand(From, 0), SDOperand(To, 0),
+ UpdateListener);
while (!From->use_empty()) {
// Process users until they are all gone.
// Now that we have modified U, add it back to the CSE maps. If it already
// exists there, recursively merge the results together.
if (SDNode *Existing = AddNonLeafNodeToCSEMaps(U)) {
- ReplaceAllUsesWith(U, Existing, Deleted);
- // U is now dead.
- if (Deleted) Deleted->push_back(U);
+ ReplaceAllUsesWith(U, Existing, UpdateListener);
+ // U is now dead. Inform the listener if it exists and delete it.
+ if (UpdateListener)
+ UpdateListener->NodeDeleted(U);
DeleteNodeNotInCSEMaps(U);
+ } else {
+ // If the node doesn't already exist, we updated it. Inform a listener if
+ // it exists.
+ if (UpdateListener)
+ UpdateListener->NodeUpdated(U);
}
}
}
/// number and types of values returned by From.
void SelectionDAG::ReplaceAllUsesWith(SDNode *From,
const SDOperand *To,
- std::vector<SDNode*> *Deleted) {
- if (From->getNumValues() == 1 && To[0].Val->getNumValues() == 1) {
- // Degenerate case handled above.
- ReplaceAllUsesWith(SDOperand(From, 0), To[0], Deleted);
- return;
- }
+ DAGUpdateListener *UpdateListener) {
+ if (From->getNumValues() == 1) // Handle the simple case efficiently.
+ return ReplaceAllUsesWith(SDOperand(From, 0), To[0], UpdateListener);
while (!From->use_empty()) {
// Process users until they are all gone.
// Now that we have modified U, add it back to the CSE maps. If it already
// exists there, recursively merge the results together.
if (SDNode *Existing = AddNonLeafNodeToCSEMaps(U)) {
- ReplaceAllUsesWith(U, Existing, Deleted);
- // U is now dead.
- if (Deleted) Deleted->push_back(U);
+ ReplaceAllUsesWith(U, Existing, UpdateListener);
+ // U is now dead. Inform the listener if it exists and delete it.
+ if (UpdateListener)
+ UpdateListener->NodeDeleted(U);
DeleteNodeNotInCSEMaps(U);
+ } else {
+ // If the node doesn't already exist, we updated it. Inform a listener if
+ // it exists.
+ if (UpdateListener)
+ UpdateListener->NodeUpdated(U);
}
}
}
+namespace {
+ /// ChainedSetUpdaterListener - This class is a DAGUpdateListener that removes
+ /// any deleted nodes from the set passed into its constructor and recursively
+ /// notifies another update listener if specified.
+ class ChainedSetUpdaterListener :
+ public SelectionDAG::DAGUpdateListener {
+ SmallSetVector<SDNode*, 16> &Set;
+ SelectionDAG::DAGUpdateListener *Chain;
+ public:
+ ChainedSetUpdaterListener(SmallSetVector<SDNode*, 16> &set,
+ SelectionDAG::DAGUpdateListener *chain)
+ : Set(set), Chain(chain) {}
+
+ virtual void NodeDeleted(SDNode *N) {
+ Set.remove(N);
+ if (Chain) Chain->NodeDeleted(N);
+ }
+ virtual void NodeUpdated(SDNode *N) {
+ if (Chain) Chain->NodeUpdated(N);
+ }
+ };
+}
+
/// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving
/// uses of other values produced by From.Val alone. The Deleted vector is
-/// handled the same was as for ReplaceAllUsesWith.
+/// handled the same way as for ReplaceAllUsesWith.
void SelectionDAG::ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To,
- std::vector<SDNode*> &Deleted) {
+ DAGUpdateListener *UpdateListener){
assert(From != To && "Cannot replace a value with itself");
+
// Handle the simple, trivial, case efficiently.
- if (From.Val->getNumValues() == 1 && To.Val->getNumValues() == 1) {
- ReplaceAllUsesWith(From, To, &Deleted);
+ if (From.Val->getNumValues() == 1) {
+ ReplaceAllUsesWith(From, To, UpdateListener);
return;
}
-
+
+ if (From.use_empty()) return;
+
// Get all of the users of From.Val. We want these in a nice,
// deterministically ordered and uniqued set, so we use a SmallSetVector.
SmallSetVector<SDNode*, 16> Users(From.Val->use_begin(), From.Val->use_end());
+ // When one of the recursive merges deletes nodes from the graph, we need to
+ // make sure that UpdateListener is notified *and* that the node is removed
+ // from Users if present. CSUL does this.
+ ChainedSetUpdaterListener CSUL(Users, UpdateListener);
+
while (!Users.empty()) {
// We know that this user uses some value of From. If it is the right
// value, update it.
SDNode *User = Users.back();
Users.pop_back();
- for (SDOperand *Op = User->OperandList,
- *E = User->OperandList+User->NumOperands; Op != E; ++Op) {
+ // Scan for an operand that matches From.
+ SDOperand *Op = User->OperandList, *E = User->OperandList+User->NumOperands;
+ for (; Op != E; ++Op)
+ if (*Op == From) break;
+
+ // If there are no matches, the user must use some other result of From.
+ if (Op == E) continue;
+
+ // Okay, we know this user needs to be updated. Remove its old self
+ // from the CSE maps.
+ RemoveNodeFromCSEMaps(User);
+
+ // Update all operands that match "From" in case there are multiple uses.
+ for (; Op != E; ++Op) {
if (*Op == From) {
- // Okay, we know this user needs to be updated. Remove its old self
- // from the CSE maps.
- RemoveNodeFromCSEMaps(User);
-
- // Update all operands that match "From".
- for (; Op != E; ++Op) {
- if (*Op == From) {
- From.Val->removeUser(User);
- *Op = To;
- To.Val->addUser(User);
- }
- }
-
- // Now that we have modified User, add it back to the CSE maps. If it
- // already exists there, recursively merge the results together.
- if (SDNode *Existing = AddNonLeafNodeToCSEMaps(User)) {
- unsigned NumDeleted = Deleted.size();
- ReplaceAllUsesWith(User, Existing, &Deleted);
-
- // User is now dead.
- Deleted.push_back(User);
- DeleteNodeNotInCSEMaps(User);
-
- // We have to be careful here, because ReplaceAllUsesWith could have
- // deleted a user of From, which means there may be dangling pointers
- // in the "Users" setvector. Scan over the deleted node pointers and
- // remove them from the setvector.
- for (unsigned i = NumDeleted, e = Deleted.size(); i != e; ++i)
- Users.remove(Deleted[i]);
- }
- break; // Exit the operand scanning loop.
+ From.Val->removeUser(User);
+ *Op = To;
+ To.Val->addUser(User);
}
}
+
+ // Now that we have modified User, add it back to the CSE maps. If it
+ // already exists there, recursively merge the results together.
+ SDNode *Existing = AddNonLeafNodeToCSEMaps(User);
+ if (!Existing) {
+ if (UpdateListener) UpdateListener->NodeUpdated(User);
+ continue; // Continue on to next user.
+ }
+
+ // If there was already an existing matching node, use ReplaceAllUsesWith
+ // to replace the dead one with the existing one. This can cause
+ // recursive merging of other unrelated nodes down the line. The merging
+ // can cause deletion of nodes that used the old value. To handle this, we
+ // use CSUL to remove them from the Users set.
+ ReplaceAllUsesWith(User, Existing, &CSUL);
+
+ // User is now dead. Notify a listener if present.
+ if (UpdateListener) UpdateListener->NodeDeleted(User);
+ DeleteNodeNotInCSEMaps(User);
}
}
void ConstantPoolSDNode::ANCHOR() {}
void BasicBlockSDNode::ANCHOR() {}
void SrcValueSDNode::ANCHOR() {}
+void MemOperandSDNode::ANCHOR() {}
void RegisterSDNode::ANCHOR() {}
void ExternalSymbolSDNode::ANCHOR() {}
void CondCodeSDNode::ANCHOR() {}
void VTSDNode::ANCHOR() {}
void LoadSDNode::ANCHOR() {}
void StoreSDNode::ANCHOR() {}
+void AtomicSDNode::ANCHOR() {}
HandleSDNode::~HandleSDNode() {
SDVTList VTs = { 0, 0 };
TheGlobal = const_cast<GlobalValue*>(GA);
}
+/// getMemOperand - Return a MemOperand object describing the memory
+/// reference performed by this load or store.
+MemOperand LSBaseSDNode::getMemOperand() const {
+ int Size = (MVT::getSizeInBits(getMemoryVT()) + 7) >> 3;
+ int Flags =
+ getOpcode() == ISD::LOAD ? MemOperand::MOLoad : MemOperand::MOStore;
+ if (IsVolatile) Flags |= MemOperand::MOVolatile;
+
+ // Check if the load references a frame index, and does not have
+ // an SV attached.
+ const FrameIndexSDNode *FI =
+ dyn_cast<const FrameIndexSDNode>(getBasePtr().Val);
+ if (!getSrcValue() && FI)
+ return MemOperand(PseudoSourceValue::getFixedStack(), Flags,
+ FI->getIndex(), Size, Alignment);
+ else
+ return MemOperand(getSrcValue(), Flags,
+ getSrcValueOffset(), Size, Alignment);
+}
+
/// Profile - Gather unique data for the node.
///
void SDNode::Profile(FoldingSetNodeID &ID) {
/// getValueTypeList - Return a pointer to the specified value type.
///
-MVT::ValueType *SDNode::getValueTypeList(MVT::ValueType VT) {
- static MVT::ValueType VTs[MVT::LAST_VALUETYPE];
- VTs[VT] = VT;
- return &VTs[VT];
+const MVT::ValueType *SDNode::getValueTypeList(MVT::ValueType VT) {
+ if (MVT::isExtendedVT(VT)) {
+ static std::set<MVT::ValueType> EVTs;
+ return &(*EVTs.insert(VT).first);
+ } else {
+ static MVT::ValueType VTs[MVT::LAST_VALUETYPE];
+ VTs[VT] = VT;
+ return &VTs[VT];
+ }
}
-
+
/// hasNUsesOfValue - Return true if there are exactly NUSES uses of the
/// indicated value. This method ignores uses of other values defined by this
/// operation.
bool SDNode::hasAnyUseOfValue(unsigned Value) const {
assert(Value < getNumValues() && "Bad value!");
- if (use_size() == 0) return false;
+ if (use_empty()) return false;
SDOperand TheValue(const_cast<SDNode *>(this), Value);
return false;
}
+/// reachesChainWithoutSideEffects - Return true if this operand (which must
+/// be a chain) reaches the specified operand without crossing any
+/// side-effecting instructions. In practice, this looks through token
+/// factors and non-volatile loads. In order to remain efficient, this only
+/// looks a couple of nodes in, it does not do an exhaustive search.
+bool SDOperand::reachesChainWithoutSideEffects(SDOperand Dest,
+ unsigned Depth) const {
+ if (*this == Dest) return true;
+
+ // Don't search too deeply, we just want to be able to see through
+ // TokenFactor's etc.
+ if (Depth == 0) return false;
+
+ // If this is a token factor, all inputs to the TF happen in parallel. If any
+ // of the operands of the TF reach dest, then we can do the xform.
+ if (getOpcode() == ISD::TokenFactor) {
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ if (getOperand(i).reachesChainWithoutSideEffects(Dest, Depth-1))
+ return true;
+ return false;
+ }
+
+ // Loads don't have side effects, look through them.
+ if (LoadSDNode *Ld = dyn_cast<LoadSDNode>(*this)) {
+ if (!Ld->isVolatile())
+ return Ld->getChain().reachesChainWithoutSideEffects(Dest, Depth-1);
+ }
+ return false;
+}
+
+
static void findPredecessor(SDNode *N, const SDNode *P, bool &found,
SmallPtrSet<SDNode *, 32> &Visited) {
if (found || !Visited.insert(N))
if (G) {
if (const TargetInstrInfo *TII = G->getTarget().getInstrInfo())
if (getOpcode()-ISD::BUILTIN_OP_END < TII->getNumOpcodes())
- return TII->getName(getOpcode()-ISD::BUILTIN_OP_END);
+ return TII->get(getOpcode()-ISD::BUILTIN_OP_END).getName();
TargetLowering &TLI = G->getTargetLoweringInfo();
const char *Name =
return "<<Unknown Target Node>>";
}
+ case ISD::MEMBARRIER: return "MemBarrier";
+ case ISD::ATOMIC_LCS: return "AtomicLCS";
+ case ISD::ATOMIC_LAS: return "AtomicLAS";
+ case ISD::ATOMIC_SWAP: return "AtomicSWAP";
case ISD::PCMARKER: return "PCMarker";
case ISD::READCYCLECOUNTER: return "ReadCycleCounter";
case ISD::SRCVALUE: return "SrcValue";
+ case ISD::MEMOPERAND: return "MemOperand";
case ISD::EntryToken: return "EntryToken";
case ISD::TokenFactor: return "TokenFactor";
case ISD::AssertSext: return "AssertSext";
case ISD::MERGE_VALUES: return "merge_values";
case ISD::INLINEASM: return "inlineasm";
case ISD::LABEL: return "label";
+ case ISD::DECLARE: return "declare";
case ISD::HANDLENODE: return "handlenode";
case ISD::FORMAL_ARGUMENTS: return "formal_arguments";
case ISD::CALL: return "call";
case ISD::FSIN: return "fsin";
case ISD::FCOS: return "fcos";
case ISD::FPOWI: return "fpowi";
+ case ISD::FPOW: return "fpow";
// Binary operators
case ISD::ADD: return "add";
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 "divrem";
case ISD::AND: return "and";
case ISD::OR: return "or";
case ISD::XOR: return "xor";
case ISD::FDIV: return "fdiv";
case ISD::FREM: return "frem";
case ISD::FCOPYSIGN: return "fcopysign";
+ case ISD::FGETSIGN: return "fgetsign";
case ISD::SETCC: return "setcc";
case ISD::SELECT: return "select";
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::BUILD_PAIR: return "build_pair";
case ISD::STACKSAVE: return "stacksave";
case ISD::STACKRESTORE: return "stackrestore";
-
+ case ISD::TRAP: return "trap";
+
// Block memory operations.
case ISD::MEMSET: return "memset";
case ISD::MEMCPY: return "memcpy";
cerr << ":" << RN;
}
+ if (!isTargetOpcode() && getOpcode() == ISD::VECTOR_SHUFFLE) {
+ SDNode *Mask = getOperand(2).Val;
+ cerr << "<";
+ for (unsigned i = 0, e = Mask->getNumOperands(); i != e; ++i) {
+ if (i) cerr << ",";
+ if (Mask->getOperand(i).getOpcode() == ISD::UNDEF)
+ cerr << "u";
+ else
+ cerr << cast<ConstantSDNode>(Mask->getOperand(i))->getValue();
+ }
+ cerr << ">";
+ }
+
if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
cerr << "<" << CSDN->getValue() << ">";
} else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
cerr << LBB->getName() << " ";
cerr << (const void*)BBDN->getBasicBlock() << ">";
} else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
- if (G && R->getReg() && MRegisterInfo::isPhysicalRegister(R->getReg())) {
+ if (G && R->getReg() &&
+ TargetRegisterInfo::isPhysicalRegister(R->getReg())) {
cerr << " " <<G->getTarget().getRegisterInfo()->getName(R->getReg());
} else {
cerr << " #" << R->getReg();
cerr << "'" << ES->getSymbol() << "'";
} else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(this)) {
if (M->getValue())
- cerr << "<" << M->getValue() << ":" << M->getOffset() << ">";
+ cerr << "<" << M->getValue() << ">";
+ else
+ cerr << "<null>";
+ } else if (const MemOperandSDNode *M = dyn_cast<MemOperandSDNode>(this)) {
+ if (M->MO.getValue())
+ cerr << "<" << M->MO.getValue() << ":" << M->MO.getOffset() << ">";
else
- cerr << "<null:" << M->getOffset() << ">";
+ cerr << "<null:" << M->MO.getOffset() << ">";
} else if (const VTSDNode *N = dyn_cast<VTSDNode>(this)) {
cerr << ":" << MVT::getValueTypeString(N->getVT());
} else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(this)) {
+ const Value *SrcValue = LD->getSrcValue();
+ int SrcOffset = LD->getSrcValueOffset();
+ cerr << " <";
+ if (SrcValue)
+ cerr << SrcValue;
+ else
+ cerr << "null";
+ cerr << ":" << SrcOffset << ">";
+
bool doExt = true;
switch (LD->getExtensionType()) {
default: doExt = false; break;
break;
}
if (doExt)
- cerr << MVT::getValueTypeString(LD->getLoadedVT()) << ">";
+ cerr << MVT::getValueTypeString(LD->getMemoryVT()) << ">";
const char *AM = getIndexedModeName(LD->getAddressingMode());
if (*AM)
cerr << " " << AM;
+ if (LD->isVolatile())
+ cerr << " <volatile>";
+ cerr << " alignment=" << LD->getAlignment();
} else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(this)) {
+ const Value *SrcValue = ST->getSrcValue();
+ int SrcOffset = ST->getSrcValueOffset();
+ cerr << " <";
+ if (SrcValue)
+ cerr << SrcValue;
+ else
+ cerr << "null";
+ cerr << ":" << SrcOffset << ">";
+
if (ST->isTruncatingStore())
cerr << " <trunc "
- << MVT::getValueTypeString(ST->getStoredVT()) << ">";
+ << MVT::getValueTypeString(ST->getMemoryVT()) << ">";
const char *AM = getIndexedModeName(ST->getAddressingMode());
if (*AM)
cerr << " " << AM;
+ if (ST->isVolatile())
+ cerr << " <volatile>";
+ cerr << " alignment=" << ST->getAlignment();
}
}
projects / oota-llvm.git / blobdiff