/// register number for the results of the node.
///
void EmitNode(SDNode *Node, unsigned InstNo,
- DenseMap<SDOperand, unsigned> &VRBaseMap);
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap);
/// EmitNoop - Emit a noop instruction.
///
/// EmitSubregNode - Generate machine code for subreg nodes.
///
void EmitSubregNode(SDNode *Node,
- DenseMap<SDOperand, unsigned> &VRBaseMap);
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap);
/// getVR - Return the virtual register corresponding to the specified result
/// of the specified node.
- unsigned getVR(SDOperand Op, DenseMap<SDOperand, unsigned> &VRBaseMap);
+ unsigned getVR(SDOperand Op, DenseMap<SDOperandImpl, unsigned> &VRBaseMap);
/// getDstOfCopyToRegUse - If the only use of the specified result number of
/// node is a CopyToReg, return its destination register. Return 0 otherwise.
void AddOperand(MachineInstr *MI, SDOperand Op, unsigned IIOpNum,
const TargetInstrDesc *II,
- DenseMap<SDOperand, unsigned> &VRBaseMap);
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap);
void AddMemOperand(MachineInstr *MI, const MemOperand &MO);
/// implicit physical register output.
void EmitCopyFromReg(SDNode *Node, unsigned ResNo, unsigned InstNo,
unsigned SrcReg,
- DenseMap<SDOperand, unsigned> &VRBaseMap);
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap);
void CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
const TargetInstrDesc &II,
- DenseMap<SDOperand, unsigned> &VRBaseMap);
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap);
/// EmitLiveInCopy - Emit a copy for a live in physical register. If the
/// physical register has only a single copy use, then coalesced the copy
//===----------------------------------------------------------------------===//
-/// SDOperand - Unlike LLVM values, Selection DAG nodes may return multiple
+/// SDOperandImpl - Unlike LLVM values, Selection DAG nodes may return multiple
/// values as the result of a computation. Many nodes return multiple values,
/// from loads (which define a token and a return value) to ADDC (which returns
/// a result and a carry value), to calls (which may return an arbitrary number
///
/// As such, each use of a SelectionDAG computation must indicate the node that
/// computes it as well as which return value to use from that node. This pair
-/// of information is represented with the SDOperand value type.
+/// of information is represented with the SDOperandImpl value type.
///
-class SDOperand {
+class SDOperandImpl {
public:
SDNode *Val; // The node defining the value we are using.
unsigned ResNo; // Which return value of the node we are using.
- SDOperand() : Val(0), ResNo(0) {}
- SDOperand(SDNode *val, unsigned resno) : Val(val), ResNo(resno) {}
+ SDOperandImpl() : Val(0), ResNo(0) {}
+ SDOperandImpl(SDNode *val, unsigned resno) : Val(val), ResNo(resno) {}
- bool operator==(const SDOperand &O) const {
+ bool operator==(const SDOperandImpl &O) const {
return Val == O.Val && ResNo == O.ResNo;
}
- bool operator!=(const SDOperand &O) const {
+ bool operator!=(const SDOperandImpl &O) const {
return !operator==(O);
}
- bool operator<(const SDOperand &O) const {
+ bool operator<(const SDOperandImpl &O) const {
return Val < O.Val || (Val == O.Val && ResNo < O.ResNo);
}
- SDOperand getValue(unsigned R) const {
- return SDOperand(Val, R);
+ SDOperandImpl getValue(unsigned R) const {
+ return SDOperandImpl(Val, R);
}
// isOperandOf - Return true if this node is an operand of N.
// Forwarding methods - These forward to the corresponding methods in SDNode.
inline unsigned getOpcode() const;
inline unsigned getNumOperands() const;
- inline const SDOperand &getOperand(unsigned i) const;
+ inline const SDOperandImpl &getOperand(unsigned i) const;
inline uint64_t getConstantOperandVal(unsigned i) const;
inline bool isTargetOpcode() const;
inline unsigned getTargetOpcode() const;
/// 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 reachesChainWithoutSideEffects(SDOperand Dest, unsigned Depth = 2) const;
+ bool reachesChainWithoutSideEffects(SDOperandImpl Dest,
+ unsigned Depth = 2) const;
/// hasOneUse - Return true if there is exactly one operation using this
/// result value of the defining operator.
};
-template<> struct DenseMapInfo<SDOperand> {
- static inline SDOperand getEmptyKey() { return SDOperand((SDNode*)-1, -1U); }
- static inline SDOperand getTombstoneKey() { return SDOperand((SDNode*)-1, 0);}
- static unsigned getHashValue(const SDOperand &Val) {
+template<> struct DenseMapInfo<SDOperandImpl> {
+ static inline SDOperandImpl getEmptyKey() {
+ return SDOperandImpl((SDNode*)-1, -1U);
+ }
+ static inline SDOperandImpl getTombstoneKey() {
+ return SDOperandImpl((SDNode*)-1, 0);
+ }
+ static unsigned getHashValue(const SDOperandImpl &Val) {
return ((unsigned)((uintptr_t)Val.Val >> 4) ^
(unsigned)((uintptr_t)Val.Val >> 9)) + Val.ResNo;
}
- static bool isEqual(const SDOperand &LHS, const SDOperand &RHS) {
+ static bool isEqual(const SDOperandImpl &LHS, const SDOperandImpl &RHS) {
return LHS == RHS;
}
static bool isPod() { return true; }
};
+/// simplify_type specializations - Allow casting operators to work directly on
+/// SDOperands as if they were SDNode*'s.
+template<> struct simplify_type<SDOperandImpl> {
+ typedef SDNode* SimpleType;
+ static SimpleType getSimplifiedValue(const SDOperandImpl &Val) {
+ return static_cast<SimpleType>(Val.Val);
+ }
+};
+template<> struct simplify_type<const SDOperandImpl> {
+ typedef SDNode* SimpleType;
+ static SimpleType getSimplifiedValue(const SDOperandImpl &Val) {
+ return static_cast<SimpleType>(Val.Val);
+ }
+};
+
+/// SDOperand - Represents a use of the SDNode referred by
+/// the SDOperandImpl.
+class SDOperand: public SDOperandImpl {
+ /// parent - Parent node of this operand.
+ SDNode *parent;
+ /// Prev, next - Pointers to the uses list of the SDNode referred by
+ /// this operand.
+ SDOperand **Prev, *Next;
+public:
+ friend class SDNode;
+ SDOperand(): SDOperandImpl(), parent(NULL), Prev(NULL), Next(NULL) {}
+
+ SDOperand(SDNode *val, unsigned resno) :
+ SDOperandImpl(val,resno), parent(NULL), Prev(NULL), Next(NULL) {}
+
+ SDOperand(const SDOperandImpl& Op): SDOperandImpl(Op),parent(NULL),
+ Prev(NULL), Next(NULL) {
+ }
+
+ SDOperand& operator= (SDOperandImpl& Op) {
+ *(SDOperandImpl*)this = Op;
+ Next = NULL;
+ Prev = NULL;
+ return *this;
+ }
+
+ SDOperand& operator= (const SDOperandImpl& Op) {
+ *(SDOperandImpl*)this = Op;
+ Next = NULL;
+ Prev = NULL;
+ return *this;
+ }
+
+ SDOperand& operator= (SDOperand& Op) {
+ *(SDOperandImpl*)this = Op;
+ Next = NULL;
+ Prev = NULL;
+ return *this;
+ }
+
+ SDOperand& operator= (const SDOperand& Op) {
+ *(SDOperandImpl*)this = Op;
+ Next = NULL;
+ Prev = NULL;
+ return *this;
+ }
+
+ SDOperand * getNext() { return Next; }
+
+ SDNode *getUser() { return parent; }
+ void setUser(SDNode *p) { parent = p; }
+
+protected:
+ void addToList(SDOperand **List) {
+ Next = *List;
+ if (Next) Next->Prev = &Next;
+ Prev = List;
+ *List = this;
+ }
+
+ void removeFromList() {
+ *Prev = Next;
+ if (Next) Next->Prev = Prev;
+ }
+};
+
+
/// simplify_type specializations - Allow casting operators to work directly on
/// SDOperands as if they were SDNode*'s.
template<> struct simplify_type<SDOperand> {
/// SDNode - Represents one node in the SelectionDAG.
///
class SDNode : public FoldingSetNode {
+private:
/// NodeType - The operation that this node performs.
///
unsigned short NodeType;
SDNode *Prev, *Next;
friend struct ilist_traits<SDNode>;
- /// Uses - These are all of the SDNode's that use a value produced by this
- /// node.
- SmallVector<SDNode*,3> Uses;
-
+ /// UsesSize - The size of the uses list.
+ unsigned UsesSize;
+
+ /// Uses - List of uses for this SDNode.
+ SDOperand *Uses;
+
+ /// addUse - add SDOperand to the list of uses.
+ void addUse(SDOperand &U) { U.addToList(&Uses); }
+
// Out-of-line virtual method to give class a home.
virtual void ANCHOR();
public:
return NodeType - ISD::BUILTIN_OP_END;
}
- size_t use_size() const { return Uses.size(); }
- bool use_empty() const { return Uses.empty(); }
- bool hasOneUse() const { return Uses.size() == 1; }
+ size_t use_size() const { return UsesSize; }
+ bool use_empty() const { return Uses == NULL; }
+ bool hasOneUse() const { return use_size() == 1; }
/// getNodeId - Return the unique node id.
///
/// setNodeId - Set unique node id.
void setNodeId(int Id) { NodeId = Id; }
- typedef SmallVector<SDNode*,3>::const_iterator use_iterator;
- use_iterator use_begin() const { return Uses.begin(); }
- use_iterator use_end() const { return Uses.end(); }
+ /// use_iterator - This class provides iterator support for SDOperand
+ /// operands that use a specific SDNode.
+ class use_iterator
+ : public forward_iterator<SDOperand, ptrdiff_t> {
+ SDOperand *Op;
+ explicit use_iterator(SDOperand *op) : Op(op) {
+ }
+ friend class SDNode;
+ public:
+ typedef forward_iterator<SDOperand, ptrdiff_t>::reference reference;
+ typedef forward_iterator<SDOperand, ptrdiff_t>::pointer pointer;
+
+ use_iterator(const use_iterator &I) : Op(I.Op) {}
+ use_iterator() : Op(0) {}
+
+ bool operator==(const use_iterator &x) const {
+ return Op == x.Op;
+ }
+ bool operator!=(const use_iterator &x) const {
+ return !operator==(x);
+ }
+
+ /// atEnd - return true if this iterator is at the end of uses list.
+ bool atEnd() const { return Op == 0; }
+
+ // Iterator traversal: forward iteration only.
+ use_iterator &operator++() { // Preincrement
+ assert(Op && "Cannot increment end iterator!");
+ Op = Op->getNext();
+ return *this;
+ }
+
+ use_iterator operator++(int) { // Postincrement
+ use_iterator tmp = *this; ++*this; return tmp;
+ }
+
+
+ /// getOperandNum - Retrive a number of a current operand.
+ unsigned getOperandNum() const {
+ assert(Op && "Cannot dereference end iterator!");
+ return (Op - Op->getUser()->OperandList);
+ }
+
+ /// Retrieve a reference to the current operand.
+ SDOperand &operator*() const {
+ assert(Op && "Cannot dereference end iterator!");
+ return *Op;
+ }
+
+ /// Retrieve a pointer to the current operand.
+ SDOperand *operator->() const {
+ assert(Op && "Cannot dereference end iterator!");
+ return Op;
+ }
+ };
+
+ /// use_begin/use_end - Provide iteration support to walk over all uses
+ /// of an SDNode.
+
+ use_iterator use_begin(SDNode *node) const {
+ return use_iterator(node->Uses);
+ }
+
+ use_iterator use_begin() const {
+ return use_iterator(Uses);
+ }
+
+ static use_iterator use_end() { return use_iterator(0); }
+
/// hasNUsesOfValue - Return true if there are exactly NUSES uses of the
/// indicated value. This method ignores uses of other values defined by this
return OperandList[Num];
}
- typedef const SDOperand* op_iterator;
+ typedef SDOperand* op_iterator;
op_iterator op_begin() const { return OperandList; }
op_iterator op_end() const { return OperandList+NumOperands; }
}
SDNode(unsigned Opc, SDVTList VTs, const SDOperand *Ops, unsigned NumOps)
- : NodeType(Opc), NodeId(-1) {
+ : NodeType(Opc), NodeId(-1), UsesSize(0), Uses(NULL) {
OperandsNeedDelete = true;
NumOperands = NumOps;
OperandList = NumOps ? new SDOperand[NumOperands] : 0;
for (unsigned i = 0; i != NumOps; ++i) {
OperandList[i] = Ops[i];
- Ops[i].Val->Uses.push_back(this);
+ OperandList[i].setUser(this);
+ Ops[i].Val->addUse(OperandList[i]);
+ ++Ops[i].Val->UsesSize;
}
ValueList = VTs.VTs;
NumValues = VTs.NumVTs;
Prev = 0; Next = 0;
}
- SDNode(unsigned Opc, SDVTList VTs) : NodeType(Opc), NodeId(-1) {
+
+ SDNode(unsigned Opc, SDVTList VTs)
+ : NodeType(Opc), NodeId(-1), UsesSize(0), Uses(NULL) {
OperandsNeedDelete = false; // Operands set with InitOperands.
NumOperands = 0;
OperandList = 0;
-
ValueList = VTs.VTs;
NumValues = VTs.NumVTs;
Prev = 0; Next = 0;
assert(OperandList == 0 && "Operands already set!");
NumOperands = NumOps;
OperandList = Ops;
+ UsesSize = 0;
+ Uses = NULL;
- for (unsigned i = 0; i != NumOps; ++i)
- Ops[i].Val->Uses.push_back(this);
+ for (unsigned i = 0; i != NumOps; ++i) {
+ OperandList[i].setUser(this);
+ Ops[i].Val->addUse(OperandList[i]);
+ ++Ops[i].Val->UsesSize;
+ }
}
/// MorphNodeTo - This frees the operands of the current node, resets the
void MorphNodeTo(unsigned Opc, SDVTList L,
const SDOperand *Ops, unsigned NumOps);
- void addUser(SDNode *User) {
- Uses.push_back(User);
- }
- void removeUser(SDNode *User) {
- // Remove this user from the operand's use list.
- for (unsigned i = Uses.size(); ; --i) {
- assert(i != 0 && "Didn't find user!");
- if (Uses[i-1] == User) {
- Uses[i-1] = Uses.back();
- Uses.pop_back();
- return;
- }
- }
+ void addUser(unsigned i, SDNode *User) {
+ assert(User->OperandList[i].getUser() && "Node without parent");
+ addUse(User->OperandList[i]);
+ ++UsesSize;
+ }
+
+ void removeUser(unsigned i, SDNode *User) {
+ assert(User->OperandList[i].getUser() && "Node without parent");
+ SDOperand &Op = User->OperandList[i];
+ Op.removeFromList();
+ --UsesSize;
}
};
-// Define inline functions from the SDOperand class.
+// Define inline functions from the SDOperandImpl class.
-inline unsigned SDOperand::getOpcode() const {
+inline unsigned SDOperandImpl::getOpcode() const {
return Val->getOpcode();
}
-inline MVT::ValueType SDOperand::getValueType() const {
+inline MVT::ValueType SDOperandImpl::getValueType() const {
return Val->getValueType(ResNo);
}
-inline unsigned SDOperand::getNumOperands() const {
+inline unsigned SDOperandImpl::getNumOperands() const {
return Val->getNumOperands();
}
-inline const SDOperand &SDOperand::getOperand(unsigned i) const {
+inline const SDOperandImpl &SDOperandImpl::getOperand(unsigned i) const {
return Val->getOperand(i);
}
-inline uint64_t SDOperand::getConstantOperandVal(unsigned i) const {
+inline uint64_t SDOperandImpl::getConstantOperandVal(unsigned i) const {
return Val->getConstantOperandVal(i);
}
-inline bool SDOperand::isTargetOpcode() const {
+inline bool SDOperandImpl::isTargetOpcode() const {
return Val->isTargetOpcode();
}
-inline unsigned SDOperand::getTargetOpcode() const {
+inline unsigned SDOperandImpl::getTargetOpcode() const {
return Val->getTargetOpcode();
}
-inline bool SDOperand::hasOneUse() const {
+inline bool SDOperandImpl::hasOneUse() const {
return Val->hasNUsesOfValue(1, ResNo);
}
-inline bool SDOperand::use_empty() const {
+inline bool SDOperandImpl::use_empty() const {
return !Val->hasAnyUseOfValue(ResNo);
}
void AddUsersToWorkList(SDNode *N) {
for (SDNode::use_iterator UI = N->use_begin(), UE = N->use_end();
UI != UE; ++UI)
- AddToWorkList(*UI);
+ AddToWorkList(UI->getUser());
}
/// visit - call the node-specific routine that knows how to fold each
bool isTruncFree = TLI.isTruncateFree(N->getValueType(0), N0.getValueType());
for (SDNode::use_iterator UI = N0.Val->use_begin(), UE = N0.Val->use_end();
UI != UE; ++UI) {
- SDNode *User = *UI;
+ SDNode *User = UI->getUser();
if (User == N)
continue;
// FIXME: Only extend SETCC N, N and SETCC N, c for now.
bool BothLiveOut = false;
for (SDNode::use_iterator UI = N->use_begin(), UE = N->use_end();
UI != UE; ++UI) {
- SDNode *User = *UI;
+ SDNode *User = UI->getUser();
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) {
SDOperand UseOp = User->getOperand(i);
if (UseOp.Val == N && UseOp.ResNo == 0) {
MVT::ValueType VT = N->getValueType(0);
// If this is fp_round(fpextend), don't fold it, allow ourselves to be folded.
- if (N->hasOneUse() && (*N->use_begin())->getOpcode() == ISD::FP_ROUND)
+ if (N->hasOneUse() && (N->use_begin())->getOpcode() == ISD::FP_ROUND)
return SDOperand();
// fold (fp_extend c1fp) -> c1fp
bool RealUse = false;
for (SDNode::use_iterator I = Ptr.Val->use_begin(),
E = Ptr.Val->use_end(); I != E; ++I) {
- SDNode *Use = *I;
+ SDNode *Use = I->getUser();
if (Use == N)
continue;
if (Use->isPredecessorOf(N))
for (SDNode::use_iterator I = Ptr.Val->use_begin(),
E = Ptr.Val->use_end(); I != E; ++I) {
- SDNode *Op = *I;
+ SDNode *Op = I->getUser();
if (Op == N ||
(Op->getOpcode() != ISD::ADD && Op->getOpcode() != ISD::SUB))
continue;
bool TryNext = false;
for (SDNode::use_iterator II = BasePtr.Val->use_begin(),
EE = BasePtr.Val->use_end(); II != EE; ++II) {
- SDNode *Use = *II;
+ SDNode *Use = II->getUser();
if (Use == Ptr.Val)
continue;
bool RealUse = false;
for (SDNode::use_iterator III = Use->use_begin(),
EEE = Use->use_end(); III != EEE; ++III) {
- SDNode *UseUse = *III;
+ SDNode *UseUse = III->getUser();
if (!((UseUse->getOpcode() == ISD::LOAD &&
cast<LoadSDNode>(UseUse)->getBasePtr().Val == Use) ||
(UseUse->getOpcode() == ISD::STORE &&
/// LegalizedNodes - For nodes that are of legal width, and that have more
/// than one use, this map indicates what regularized operand to use. This
/// allows us to avoid legalizing the same thing more than once.
- DenseMap<SDOperand, SDOperand> LegalizedNodes;
+ DenseMap<SDOperandImpl, SDOperand> LegalizedNodes;
/// PromotedNodes - For nodes that are below legal width, and that have more
/// than one use, this map indicates what promoted value to use. This allows
/// us to avoid promoting the same thing more than once.
- DenseMap<SDOperand, SDOperand> PromotedNodes;
+ DenseMap<SDOperandImpl, SDOperand> PromotedNodes;
/// ExpandedNodes - For nodes that need to be expanded this map indicates
/// which which operands are the expanded version of the input. This allows
/// us to avoid expanding the same node more than once.
- DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedNodes;
+ DenseMap<SDOperandImpl, std::pair<SDOperand, SDOperand> > ExpandedNodes;
/// SplitNodes - For vector nodes that need to be split, this map indicates
/// which which operands are the split version of the input. This allows us
// are now done.
for (SDNode::use_iterator UI = N->use_begin(), E = N->use_end();
UI != E; ++UI)
- Worklist.push_back(*UI);
+ Worklist.push_back(UI->getUser());
}
assert(Order.size() == Visited.size() &&
E = Node->use_end(); UI != E; ++UI) {
// Make sure to only follow users of our token chain.
- SDNode *User = *UI;
+ SDNode *User = UI->getUser();
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i)
if (User->getOperand(i) == TheChain)
if (SDNode *Result = FindCallEndFromCallStart(User))
// Note that LegalizeOp may be reentered even from single-use nodes, which
// means that we always must cache transformed nodes.
- DenseMap<SDOperand, SDOperand>::iterator I = LegalizedNodes.find(Op);
+ DenseMap<SDOperandImpl, SDOperand>::iterator I = LegalizedNodes.find(Op);
if (I != LegalizedNodes.end()) return I->second;
SDOperand Tmp1, Tmp2, Tmp3, Tmp4;
// will cause this node to be legalized as well as handling libcalls right.
if (LastCALLSEQ_END.Val != Node) {
LegalizeOp(SDOperand(FindCallStartFromCallEnd(Node), 0));
- DenseMap<SDOperand, SDOperand>::iterator I = LegalizedNodes.find(Op);
+ DenseMap<SDOperandImpl, SDOperand>::iterator I = LegalizedNodes.find(Op);
assert(I != LegalizedNodes.end() &&
"Legalizing the call start should have legalized this node!");
return I->second;
SDOperand Result;
SDNode *Node = Op.Val;
- DenseMap<SDOperand, SDOperand>::iterator I = PromotedNodes.find(Op);
+ DenseMap<SDOperandImpl, SDOperand>::iterator I = PromotedNodes.find(Op);
if (I != PromotedNodes.end()) return I->second;
switch (Node->getOpcode()) {
"Cannot expand to FP value or to larger int value!");
// See if we already expanded it.
- DenseMap<SDOperand, std::pair<SDOperand, SDOperand> >::iterator I
+ DenseMap<SDOperandImpl, std::pair<SDOperand, SDOperand> >::iterator I
= ExpandedNodes.find(Op);
if (I != ExpandedNodes.end()) {
Lo = I->second.first;
for (SDNode::use_iterator UI = N->use_begin(), E = N->use_end();
UI != E; ++UI) {
- SDNode *User = *UI;
+ SDNode *User = UI->getUser();
int NodeID = User->getNodeId();
assert(NodeID != ReadyToProcess && NodeID != Processed &&
"Invalid node id for user of unprocessed node!");
/// RemapNode - If the specified value was already legalized to another value,
/// replace it by that value.
void DAGTypeLegalizer::RemapNode(SDOperand &N) {
- DenseMap<SDOperand, SDOperand>::iterator I = ReplacedNodes.find(N);
+ DenseMap<SDOperandImpl, SDOperand>::iterator I = ReplacedNodes.find(N);
if (I != ReplacedNodes.end()) {
// Use path compression to speed up future lookups if values get multiply
// replaced with other values.
/// PromotedNodes - For nodes that are below legal width, this map indicates
/// what promoted value to use.
- DenseMap<SDOperand, SDOperand> PromotedNodes;
+ DenseMap<SDOperandImpl, SDOperand> PromotedNodes;
/// ExpandedNodes - For nodes that need to be expanded this map indicates
/// which operands are the expanded version of the input.
- DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedNodes;
+ DenseMap<SDOperandImpl, std::pair<SDOperand, SDOperand> > ExpandedNodes;
/// FloatToIntedNodes - For floating point nodes converted to integers of
/// the same size, this map indicates the converted value to use.
- DenseMap<SDOperand, SDOperand> FloatToIntedNodes;
+ DenseMap<SDOperandImpl, SDOperand> FloatToIntedNodes;
/// ScalarizedNodes - For nodes that are <1 x ty>, this map indicates the
/// scalar value of type 'ty' to use.
- DenseMap<SDOperand, SDOperand> ScalarizedNodes;
+ DenseMap<SDOperandImpl, SDOperand> ScalarizedNodes;
/// SplitNodes - For nodes that need to be split this map indicates
/// which operands are the expanded version of the input.
- DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > SplitNodes;
+ DenseMap<SDOperandImpl, std::pair<SDOperand, SDOperand> > SplitNodes;
/// ReplacedNodes - For nodes that have been replaced with another,
/// indicates the replacement node to use.
- DenseMap<SDOperand, SDOperand> ReplacedNodes;
+ DenseMap<SDOperandImpl, SDOperand> ReplacedNodes;
/// Worklist - This defines a worklist of nodes to process. In order to be
/// pushed onto this worklist, all operands of a node must have already been
bool HasFlagUse = false;
for (SDNode::use_iterator UI = N->use_begin(), E = N->use_end();
UI != E; ++UI)
- if (FlagVal.isOperandOf(*UI)) {
+ if (FlagVal.isOperandOf(UI->getUser())) {
HasFlagUse = true;
NodeSUnit->FlaggedNodes.push_back(N);
SUnitMap[N].push_back(NodeSUnit);
- N = *UI;
+ N = UI->getUser();
break;
}
if (!HasFlagUse) break;
void ScheduleDAG::EmitCopyFromReg(SDNode *Node, unsigned ResNo,
unsigned InstanceNo, unsigned SrcReg,
- DenseMap<SDOperand, unsigned> &VRBaseMap) {
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap) {
unsigned VRBase = 0;
if (TargetRegisterInfo::isVirtualRegister(SrcReg)) {
// Just use the input register directly!
bool MatchReg = true;
for (SDNode::use_iterator UI = Node->use_begin(), E = Node->use_end();
UI != E; ++UI) {
- SDNode *Use = *UI;
+ SDNode *Use = UI->getUser();
bool Match = true;
if (Use->getOpcode() == ISD::CopyToReg &&
Use->getOperand(2).Val == Node &&
if (!Node->hasOneUse())
return 0;
- SDNode *Use = *Node->use_begin();
+ SDNode *Use = Node->use_begin()->getUser();
if (Use->getOpcode() == ISD::CopyToReg &&
Use->getOperand(2).Val == Node &&
Use->getOperand(2).ResNo == ResNo) {
void ScheduleDAG::CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
const TargetInstrDesc &II,
- DenseMap<SDOperand, unsigned> &VRBaseMap) {
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap) {
assert(Node->getTargetOpcode() != TargetInstrInfo::IMPLICIT_DEF &&
"IMPLICIT_DEF should have been handled as a special case elsewhere!");
unsigned VRBase = 0;
for (SDNode::use_iterator UI = Node->use_begin(), E = Node->use_end();
UI != E; ++UI) {
- SDNode *Use = *UI;
+ SDNode *Use = UI->getUser();
if (Use->getOpcode() == ISD::CopyToReg &&
Use->getOperand(2).Val == Node &&
Use->getOperand(2).ResNo == i) {
/// getVR - Return the virtual register corresponding to the specified result
/// of the specified node.
unsigned ScheduleDAG::getVR(SDOperand Op,
- DenseMap<SDOperand, unsigned> &VRBaseMap) {
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap) {
if (Op.isTargetOpcode() &&
Op.getTargetOpcode() == TargetInstrInfo::IMPLICIT_DEF) {
// Add an IMPLICIT_DEF instruction before every use.
return VReg;
}
- DenseMap<SDOperand, unsigned>::iterator I = VRBaseMap.find(Op);
+ DenseMap<SDOperandImpl, unsigned>::iterator I = VRBaseMap.find(Op);
assert(I != VRBaseMap.end() && "Node emitted out of order - late");
return I->second;
}
void ScheduleDAG::AddOperand(MachineInstr *MI, SDOperand Op,
unsigned IIOpNum,
const TargetInstrDesc *II,
- DenseMap<SDOperand, unsigned> &VRBaseMap) {
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap) {
if (Op.isTargetOpcode()) {
// Note that this case is redundant with the final else block, but we
// include it because it is the most common and it makes the logic
/// EmitSubregNode - Generate machine code for subreg nodes.
///
void ScheduleDAG::EmitSubregNode(SDNode *Node,
- DenseMap<SDOperand, unsigned> &VRBaseMap) {
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap) {
unsigned VRBase = 0;
unsigned Opc = Node->getTargetOpcode();
// the CopyToReg'd destination register instead of creating a new vreg.
for (SDNode::use_iterator UI = Node->use_begin(), E = Node->use_end();
UI != E; ++UI) {
- SDNode *Use = *UI;
+ SDNode *Use = UI->getUser();
if (Use->getOpcode() == ISD::CopyToReg &&
Use->getOperand(2).Val == Node) {
unsigned DestReg = cast<RegisterSDNode>(Use->getOperand(1))->getReg();
/// EmitNode - Generate machine code for an node and needed dependencies.
///
void ScheduleDAG::EmitNode(SDNode *Node, unsigned InstanceNo,
- DenseMap<SDOperand, unsigned> &VRBaseMap) {
+ DenseMap<SDOperandImpl, unsigned> &VRBaseMap) {
// If machine instruction
if (Node->isTargetOpcode()) {
unsigned Opc = Node->getTargetOpcode();
}
// Finally, emit the code for all of the scheduled instructions.
- DenseMap<SDOperand, unsigned> VRBaseMap;
+ DenseMap<SDOperandImpl, unsigned> VRBaseMap;
DenseMap<SUnit*, unsigned> CopyVRBaseMap;
for (unsigned i = 0, e = Sequence.size(); i != e; i++) {
SUnit *SU = Sequence[i];
// This implements the SelectionDAG class.
//
//===----------------------------------------------------------------------===//
-
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Constants.h"
#include "llvm/GlobalAlias.h"
// no cycles in the graph.
for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ++I) {
SDNode *Operand = I->Val;
- Operand->removeUser(N);
+ Operand->removeUser(std::distance(N->op_begin(), I), N);
// Now that we removed this operand, see if there are no uses of it left.
if (Operand->use_empty())
DeadNodes.push_back(Operand);
}
- if (N->OperandsNeedDelete)
+ if (N->OperandsNeedDelete) {
delete[] N->OperandList;
+ }
N->OperandList = 0;
N->NumOperands = 0;
// no cycles in the graph.
for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ++I) {
SDNode *Operand = I->Val;
- Operand->removeUser(N);
+ Operand->removeUser(std::distance(N->op_begin(), I), N);
// Now that we removed this operand, see if there are no uses of it left.
if (Operand->use_empty())
DeadNodes.push_back(Operand);
}
- if (N->OperandsNeedDelete)
+ if (N->OperandsNeedDelete) {
delete[] N->OperandList;
+ }
N->OperandList = 0;
N->NumOperands = 0;
// Drop all of the operands and decrement used nodes use counts.
for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ++I)
- I->Val->removeUser(N);
- if (N->OperandsNeedDelete)
+ I->Val->removeUser(std::distance(N->op_begin(), I), N);
+ if (N->OperandsNeedDelete) {
delete[] N->OperandList;
+ }
N->OperandList = 0;
N->NumOperands = 0;
while (!AllNodes.empty()) {
SDNode *N = AllNodes.begin();
N->SetNextInBucket(0);
- if (N->OperandsNeedDelete)
+ if (N->OperandsNeedDelete) {
delete [] N->OperandList;
+ }
N->OperandList = 0;
N->NumOperands = 0;
AllNodes.pop_front();
RemoveNodeFromCSEMaps(N);
// Now we update the operands.
- N->OperandList[0].Val->removeUser(N);
- Op.Val->addUser(N);
+ N->OperandList[0].Val->removeUser(0, N);
N->OperandList[0] = Op;
+ N->OperandList[0].setUser(N);
+ Op.Val->addUser(0, N);
// If this gets put into a CSE map, add it.
if (InsertPos) CSEMap.InsertNode(N, InsertPos);
// Now we update the operands.
if (N->OperandList[0] != Op1) {
- N->OperandList[0].Val->removeUser(N);
- Op1.Val->addUser(N);
+ N->OperandList[0].Val->removeUser(0, N);
N->OperandList[0] = Op1;
+ N->OperandList[0].setUser(N);
+ Op1.Val->addUser(0, N);
}
if (N->OperandList[1] != Op2) {
- N->OperandList[1].Val->removeUser(N);
- Op2.Val->addUser(N);
+ N->OperandList[1].Val->removeUser(1, N);
N->OperandList[1] = Op2;
+ N->OperandList[1].setUser(N);
+ Op2.Val->addUser(1, N);
}
// If this gets put into a CSE map, add it.
return UpdateNodeOperands(N, Ops, 5);
}
-
SDOperand SelectionDAG::
UpdateNodeOperands(SDOperand InN, SDOperand *Ops, unsigned NumOps) {
SDNode *N = InN.Val;
// Now we update the operands.
for (unsigned i = 0; i != NumOps; ++i) {
if (N->OperandList[i] != Ops[i]) {
- N->OperandList[i].Val->removeUser(N);
- Ops[i].Val->addUser(N);
+ N->OperandList[i].Val->removeUser(i, N);
N->OperandList[i] = Ops[i];
+ N->OperandList[i].setUser(N);
+ Ops[i].Val->addUser(i, N);
}
}
return InN;
}
-
/// MorphNodeTo - This frees the operands of the current node, resets the
/// opcode, types, and operands to the specified value. This should only be
/// used by the SelectionDAG class.
// Clear the operands list, updating used nodes to remove this from their
// use list.
for (op_iterator I = op_begin(), E = op_end(); I != E; ++I)
- I->Val->removeUser(this);
+ I->Val->removeUser(std::distance(op_begin(), I), this);
// If NumOps is larger than the # of operands we currently have, reallocate
// the operand list.
if (NumOps > NumOperands) {
- if (OperandsNeedDelete)
+ if (OperandsNeedDelete) {
delete [] OperandList;
+ }
OperandList = new SDOperand[NumOps];
OperandsNeedDelete = true;
}
for (unsigned i = 0, e = NumOps; i != e; ++i) {
OperandList[i] = Ops[i];
+ OperandList[i].setUser(this);
SDNode *N = OperandList[i].Val;
- N->Uses.push_back(this);
+ N->addUser(i, this);
+ ++N->UsesSize;
}
}
assert(From->getNumValues() == 1 && FromN.ResNo == 0 &&
"Cannot replace with this method!");
assert(From != To.Val && "Cannot replace uses of with self");
-
+
while (!From->use_empty()) {
- // Process users until they are all gone.
- SDNode *U = *From->use_begin();
-
+ SDNode::use_iterator UI = From->use_begin();
+ SDNode *U = UI->getUser();
+
// This node is about to morph, remove its old self from the CSE maps.
RemoveNodeFromCSEMaps(U);
-
- for (SDOperand *I = U->OperandList, *E = U->OperandList+U->NumOperands;
- I != E; ++I)
+ int operandNum = 0;
+ for (SDNode::op_iterator I = U->op_begin(), E = U->op_end();
+ I != E; ++I, ++operandNum)
if (I->Val == From) {
- From->removeUser(U);
+ From->removeUser(operandNum, U);
*I = To;
- To.Val->addUser(U);
- }
+ I->setUser(U);
+ To.Val->addUser(operandNum, U);
+ }
// Now that we have modified U, add it back to the CSE maps. If it already
// exists there, recursively merge the results together.
UpdateListener);
while (!From->use_empty()) {
- // Process users until they are all gone.
- SDNode *U = *From->use_begin();
-
+ SDNode::use_iterator UI = From->use_begin();
+ SDNode *U = UI->getUser();
+
// This node is about to morph, remove its old self from the CSE maps.
RemoveNodeFromCSEMaps(U);
-
- for (SDOperand *I = U->OperandList, *E = U->OperandList+U->NumOperands;
- I != E; ++I)
+ int operandNum = 0;
+ for (SDNode::op_iterator I = U->op_begin(), E = U->op_end();
+ I != E; ++I, ++operandNum)
if (I->Val == From) {
- From->removeUser(U);
+ From->removeUser(operandNum, U);
I->Val = To;
- To->addUser(U);
+ To->addUser(operandNum, 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)) {
return ReplaceAllUsesWith(SDOperand(From, 0), To[0], UpdateListener);
while (!From->use_empty()) {
- // Process users until they are all gone.
- SDNode *U = *From->use_begin();
-
+ SDNode::use_iterator UI = From->use_begin();
+ SDNode *U = UI->getUser();
+
// This node is about to morph, remove its old self from the CSE maps.
RemoveNodeFromCSEMaps(U);
-
- for (SDOperand *I = U->OperandList, *E = U->OperandList+U->NumOperands;
- I != E; ++I)
+ int operandNum = 0;
+ for (SDNode::op_iterator I = U->op_begin(), E = U->op_end();
+ I != E; ++I, ++operandNum)
if (I->Val == From) {
const SDOperand &ToOp = To[I->ResNo];
- From->removeUser(U);
+ From->removeUser(operandNum, U);
*I = ToOp;
- ToOp.Val->addUser(U);
+ I->setUser(U);
+ ToOp.Val->addUser(operandNum, 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)) {
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);
// 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());
+ SmallSetVector<SDNode*, 16> Users;
+ for (SDNode::use_iterator UI = From.Val->use_begin(),
+ E = From.Val->use_end(); UI != E; ++UI) {
+ SDNode *User = UI->getUser();
+ if (!Users.count(User))
+ Users.insert(User);
+ }
// 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
Users.pop_back();
// Scan for an operand that matches From.
- SDOperand *Op = User->OperandList, *E = User->OperandList+User->NumOperands;
+ SDNode::op_iterator Op = User->op_begin(), E = User->op_end();
for (; Op != E; ++Op)
if (*Op == From) break;
// Update all operands that match "From" in case there are multiple uses.
for (; Op != E; ++Op) {
if (*Op == From) {
- From.Val->removeUser(User);
- *Op = To;
- To.Val->addUser(User);
+ From.Val->removeUser(Op-User->op_begin(), User);
+ *Op = To;
+ Op->setUser(User);
+ To.Val->addUser(Op-User->op_begin(), User);
}
}
SmallPtrSet<SDNode*, 32> UsersHandled;
- for (SDNode::use_iterator UI = Uses.begin(), E = Uses.end(); UI != E; ++UI) {
- SDNode *User = *UI;
- if (User->getNumOperands() == 1 ||
- UsersHandled.insert(User)) // First time we've seen this?
- for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i)
- if (User->getOperand(i) == TheValue) {
- if (NUses == 0)
- return false; // too many uses
- --NUses;
- }
+ // TODO: Only iterate over uses of a given value of the node
+ for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) {
+ if (*UI == TheValue) {
+ if (NUses == 0)
+ return false;
+ --NUses;
+ }
}
// Found exactly the right number of uses?
SmallPtrSet<SDNode*, 32> UsersHandled;
- for (SDNode::use_iterator UI = Uses.begin(), E = Uses.end(); UI != E; ++UI) {
- SDNode *User = *UI;
+ for (SDNode::use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) {
+ SDNode *User = UI->getUser();
if (User->getNumOperands() == 1 ||
UsersHandled.insert(User)) // First time we've seen this?
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i)
bool SDNode::isOnlyUseOf(SDNode *N) const {
bool Seen = false;
for (SDNode::use_iterator I = N->use_begin(), E = N->use_end(); I != E; ++I) {
- SDNode *User = *I;
+ SDNode *User = I->getUser();
if (User == this)
Seen = true;
else
/// isOperand - Return true if this node is an operand of N.
///
-bool SDOperand::isOperandOf(SDNode *N) const {
+bool SDOperandImpl::isOperandOf(SDNode *N) const {
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
if (*this == N->getOperand(i))
return true;
/// 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,
+bool SDOperandImpl::reachesChainWithoutSideEffects(SDOperandImpl Dest,
unsigned Depth) const {
if (*this == Dest) return true;
SDNode *LHSN = N->getOperand(0).Val;
for (SDNode::use_iterator UI = LHSN->use_begin(), E = LHSN->use_end();
UI != E; ++UI)
- if ((*UI)->getOpcode() == PPCISD::VCMPo &&
- (*UI)->getOperand(1) == N->getOperand(1) &&
- (*UI)->getOperand(2) == N->getOperand(2) &&
- (*UI)->getOperand(0) == N->getOperand(0)) {
- VCMPoNode = *UI;
+ if ((*UI).getUser()->getOpcode() == PPCISD::VCMPo &&
+ (*UI).getUser()->getOperand(1) == N->getOperand(1) &&
+ (*UI).getUser()->getOperand(2) == N->getOperand(2) &&
+ (*UI).getUser()->getOperand(0) == N->getOperand(0)) {
+ VCMPoNode = UI->getUser();
break;
}
for (SDNode::use_iterator UI = VCMPoNode->use_begin();
FlagUser == 0; ++UI) {
assert(UI != VCMPoNode->use_end() && "Didn't find user!");
- SDNode *User = *UI;
+ SDNode *User = UI->getUser();
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) {
if (User->getOperand(i) == SDOperand(VCMPoNode, 1)) {
FlagUser = User;
static SDNode *findFlagUse(SDNode *N) {
unsigned FlagResNo = N->getNumValues()-1;
for (SDNode::use_iterator I = N->use_begin(), E = N->use_end(); I != E; ++I) {
- SDNode *User = *I;
+ SDNode *User = I->getUser();
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) {
SDOperand Op = User->getOperand(i);
if (Op.Val == N && Op.ResNo == FlagResNo)
// result has a single use which is a store.
if (!Op.hasOneUse())
return SDOperand();
- SDNode *User = *Op.Val->use_begin();
+ SDNode *User = Op.Val->use_begin()->getUser();
if (User->getOpcode() != ISD::STORE)
return SDOperand();
SDOperand Extract = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, MVT::i32,
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