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llvm-6502/include/llvm/CodeGen/SelectionDAG.h
Chris Lattner bd564bfc63 Start eliminating temporary vectors used to create DAG nodes. Instead, pass 
in the start of an array and a count of operands where applicable.  In many
cases, the number of operands is known, so this static array can be allocated
on the stack, avoiding the heap.  In many other cases, a SmallVector can be
used, which has the same benefit in the common cases.

I updated a lot of code calling getNode that takes a vector, but ran out of
time.  The rest of the code should be updated, and these methods should be
removed.

We should also do the same thing to eliminate the methods that take a
vector of MVT::ValueTypes.

It would be extra nice to convert the dagiselemitter to avoid creating vectors
for operands when calling getTargetNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29566 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-08 02:23:42 +00:00

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//===-- llvm/CodeGen/SelectionDAG.h - InstSelection DAG ---------*- C++ -*-===//
//
// 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 declares the SelectionDAG class, and transitively defines the
// SDNode class and subclasses.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_SELECTIONDAG_H
#define LLVM_CODEGEN_SELECTIONDAG_H
#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/CodeGen/SelectionDAGCSEMap.h"
#include "llvm/ADT/ilist"
#include <list>
#include <map>
#include <set>
#include <string>
namespace llvm {
class TargetLowering;
class TargetMachine;
class MachineDebugInfo;
class MachineFunction;
/// SelectionDAG class - This is used to represent a portion of an LLVM function
/// in a low-level Data Dependence DAG representation suitable for instruction
/// selection. This DAG is constructed as the first step of instruction
/// selection in order to allow implementation of machine specific optimizations
/// and code simplifications.
///
/// The representation used by the SelectionDAG is a target-independent
/// representation, which has some similarities to the GCC RTL representation,
/// but is significantly more simple, powerful, and is a graph form instead of a
/// linear form.
///
class SelectionDAG {
TargetLowering &TLI;
MachineFunction &MF;
MachineDebugInfo *DI;
// Root - The root of the entire DAG. EntryNode - The starting token.
SDOperand Root, EntryNode;
// AllNodes - A linked list of nodes in the current DAG.
ilist<SDNode> AllNodes;
// ValueNodes - track SrcValue nodes
std::map<std::pair<const Value*, int>, SDNode*> ValueNodes;
public:
SelectionDAG(TargetLowering &tli, MachineFunction &mf, MachineDebugInfo *di)
: TLI(tli), MF(mf), DI(di) {
EntryNode = Root = getNode(ISD::EntryToken, MVT::Other);
}
~SelectionDAG();
MachineFunction &getMachineFunction() const { return MF; }
const TargetMachine &getTarget() const;
TargetLowering &getTargetLoweringInfo() const { return TLI; }
MachineDebugInfo *getMachineDebugInfo() const { return DI; }
/// viewGraph - Pop up a ghostview window with the DAG rendered using 'dot'.
///
void viewGraph();
typedef ilist<SDNode>::const_iterator allnodes_const_iterator;
allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); }
allnodes_const_iterator allnodes_end() const { return AllNodes.end(); }
typedef ilist<SDNode>::iterator allnodes_iterator;
allnodes_iterator allnodes_begin() { return AllNodes.begin(); }
allnodes_iterator allnodes_end() { return AllNodes.end(); }
/// getRoot - Return the root tag of the SelectionDAG.
///
const SDOperand &getRoot() const { return Root; }
/// getEntryNode - Return the token chain corresponding to the entry of the
/// function.
const SDOperand &getEntryNode() const { return EntryNode; }
/// setRoot - Set the current root tag of the SelectionDAG.
///
const SDOperand &setRoot(SDOperand N) { return Root = N; }
/// Combine - This iterates over the nodes in the SelectionDAG, folding
/// certain types of nodes together, or eliminating superfluous nodes. When
/// the AfterLegalize argument is set to 'true', Combine takes care not to
/// generate any nodes that will be illegal on the target.
void Combine(bool AfterLegalize);
/// Legalize - This transforms the SelectionDAG into a SelectionDAG that is
/// compatible with the target instruction selector, as indicated by the
/// TargetLowering object.
///
/// Note that this is an involved process that may invalidate pointers into
/// the graph.
void Legalize();
/// RemoveDeadNodes - This method deletes all unreachable nodes in the
/// SelectionDAG.
void RemoveDeadNodes();
SDOperand getString(const std::string &Val);
SDOperand getConstant(uint64_t Val, MVT::ValueType VT);
SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT);
SDOperand getConstantFP(double Val, MVT::ValueType VT);
SDOperand getTargetConstantFP(double Val, MVT::ValueType VT);
SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT,
int offset = 0);
SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT,
int offset = 0);
SDOperand getFrameIndex(int FI, MVT::ValueType VT);
SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT);
SDOperand getJumpTable(int JTI, MVT::ValueType VT);
SDOperand getTargetJumpTable(int JTI, MVT::ValueType VT);
SDOperand getConstantPool(Constant *C, MVT::ValueType VT,
unsigned Alignment=0, int offset = 0);
SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT,
unsigned Alignment=0, int offset = 0);
SDOperand getBasicBlock(MachineBasicBlock *MBB);
SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT);
SDOperand getTargetExternalSymbol(const char *Sym, MVT::ValueType VT);
SDOperand getValueType(MVT::ValueType);
SDOperand getRegister(unsigned Reg, MVT::ValueType VT);
SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) {
return getNode(ISD::CopyToReg, MVT::Other, Chain,
getRegister(Reg, N.getValueType()), N);
}
// This version of the getCopyToReg method takes an extra operand, which
// indicates that there is potentially an incoming flag value (if Flag is not
// null) and that there should be a flag result.
SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N,
SDOperand Flag) {
std::vector<MVT::ValueType> VTs;
VTs.push_back(MVT::Other);
VTs.push_back(MVT::Flag);
SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag };
return getNode(ISD::CopyToReg, VTs, Ops, Flag.Val ? 4 : 3);
}
// Similar to last getCopyToReg() except parameter Reg is a SDOperand
SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N,
SDOperand Flag) {
std::vector<MVT::ValueType> VTs;
VTs.push_back(MVT::Other);
VTs.push_back(MVT::Flag);
SDOperand Ops[] = { Chain, Reg, N, Flag };
return getNode(ISD::CopyToReg, VTs, Ops, Flag.Val ? 4 : 3);
}
SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) {
std::vector<MVT::ValueType> ResultTys;
ResultTys.push_back(VT);
ResultTys.push_back(MVT::Other);
SDOperand Ops[] = { Chain, getRegister(Reg, VT) };
return getNode(ISD::CopyFromReg, ResultTys, Ops, 2);
}
// This version of the getCopyFromReg method takes an extra operand, which
// indicates that there is potentially an incoming flag value (if Flag is not
// null) and that there should be a flag result.
SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT,
SDOperand Flag) {
std::vector<MVT::ValueType> ResultTys;
ResultTys.push_back(VT);
ResultTys.push_back(MVT::Other);
ResultTys.push_back(MVT::Flag);
SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag };
return getNode(ISD::CopyFromReg, ResultTys, Ops, Flag.Val ? 3 : 2);
}
SDOperand getCondCode(ISD::CondCode Cond);
/// getZeroExtendInReg - Return the expression required to zero extend the Op
/// value assuming it was the smaller SrcTy value.
SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy);
/// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have
/// a flag result (to ensure it's not CSE'd).
SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) {
std::vector<MVT::ValueType> ResultTys;
ResultTys.push_back(MVT::Other);
ResultTys.push_back(MVT::Flag);
SDOperand Ops[] = { Chain, Op };
return getNode(ISD::CALLSEQ_START, ResultTys, Ops, 2);
}
/// getNode - Gets or creates the specified node.
///
SDOperand getNode(unsigned Opcode, MVT::ValueType VT);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT, SDOperand N);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand N1, SDOperand N2);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand N1, SDOperand N2, SDOperand N3);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4,
SDOperand N5);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
const SDOperand *Ops, unsigned NumOps);
SDOperand getNode(unsigned Opcode, MVT::ValueType VT,
const std::vector<SDOperand> &Ops) {
return getNode(Opcode, VT, &Ops[0], Ops.size());
}
SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys,
const SDOperand *Ops, unsigned NumOps);
SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys,
const std::vector<SDOperand> &Ops) {
return getNode(Opcode, ResultTys, &Ops[0], Ops.size());
}
/// getSetCC - Helper function to make it easier to build SetCC's if you just
/// have an ISD::CondCode instead of an SDOperand.
///
SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS,
ISD::CondCode Cond) {
return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond));
}
/// getSelectCC - Helper function to make it easier to build SelectCC's if you
/// just have an ISD::CondCode instead of an SDOperand.
///
SDOperand getSelectCC(SDOperand LHS, SDOperand RHS,
SDOperand True, SDOperand False, ISD::CondCode Cond) {
MVT::ValueType VT = True.getValueType();
return getNode(ISD::SELECT_CC, VT, LHS, RHS, True, False,getCondCode(Cond));
}
/// getVAArg - VAArg produces a result and token chain, and takes a pointer
/// and a source value as input.
SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr,
SDOperand SV);
/// getLoad - Loads are not normal binary operators: their result type is not
/// determined by their operands, and they produce a value AND a token chain.
///
SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr,
SDOperand SV);
SDOperand getVecLoad(unsigned Count, MVT::ValueType VT, SDOperand Chain,
SDOperand Ptr, SDOperand SV);
SDOperand getExtLoad(unsigned Opcode, MVT::ValueType VT, SDOperand Chain,
SDOperand Ptr, SDOperand SV, MVT::ValueType EVT);
// getSrcValue - construct a node to track a Value* through the backend
SDOperand getSrcValue(const Value* I, int offset = 0);
/// UpdateNodeOperands - *Mutate* the specified node in-place to have the
/// specified operands. If the resultant node already exists in the DAG,
/// this does not modify the specified node, instead it returns the node that
/// already exists. If the resultant node does not exist in the DAG, the
/// input node is returned. As a degenerate case, if you specify the same
/// input operands as the node already has, the input node is returned.
SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op);
SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2);
SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2,
SDOperand Op3);
SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4);
SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5);
SDOperand UpdateNodeOperands(SDOperand N, SDOperand *Ops, unsigned NumOps);
/// SelectNodeTo - These are used for target selectors to *mutate* the
/// specified node to have the specified return type, Target opcode, and
/// operands. Note that target opcodes are stored as
/// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value
/// of the resultant node is returned.
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5, SDOperand Op6);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5, SDOperand Op6,
SDOperand Op7);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5, SDOperand Op6,
SDOperand Op7, SDOperand Op8);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4);
SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5);
/// getTargetNode - These are used for target selectors to create a new node
/// with specified return type(s), target opcode, and operands.
///
/// Note that getTargetNode returns the resultant node. If there is already a
/// node of the specified opcode and operands, it returns that node instead of
/// the current one.
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5, SDOperand Op6);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5, SDOperand Op6,
SDOperand Op7);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
SDOperand Op1, SDOperand Op2, SDOperand Op3,
SDOperand Op4, SDOperand Op5, SDOperand Op6,
SDOperand Op7, SDOperand Op8);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT,
const SDOperand *Ops, unsigned NumOps);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5,
SDOperand Op6);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5,
SDOperand Op6, SDOperand Op7);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, MVT::ValueType VT3,
SDOperand Op1, SDOperand Op2);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, MVT::ValueType VT3,
SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, MVT::ValueType VT3,
SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5,
SDOperand Op6);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2, MVT::ValueType VT3,
SDOperand Op1, SDOperand Op2,
SDOperand Op3, SDOperand Op4, SDOperand Op5,
SDOperand Op6, SDOperand Op7);
SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1,
MVT::ValueType VT2,
const SDOperand *Ops, unsigned NumOps);
/// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead.
/// This can cause recursive merging of nodes in the DAG. Use the first
/// version if 'From' is known to have a single result, use the second
/// if you have two nodes with identical results, use the third otherwise.
///
/// These methods all take an optional vector, which (if not null) is
/// populated with any nodes that are deleted from the SelectionDAG, due to
/// new equivalences that are discovered.
///
void ReplaceAllUsesWith(SDOperand From, SDOperand Op,
std::vector<SDNode*> *Deleted = 0);
void ReplaceAllUsesWith(SDNode *From, SDNode *To,
std::vector<SDNode*> *Deleted = 0);
void ReplaceAllUsesWith(SDNode *From, const std::vector<SDOperand> &To,
std::vector<SDNode*> *Deleted = 0);
/// 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, but it is required for
/// this method.
void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To,
std::vector<SDNode*> &Deleted);
/// DeleteNode - Remove the specified node from the system. This node must
/// have no referrers.
void DeleteNode(SDNode *N);
/// AssignNodeIds - Assign a unique node id for each node in the DAG based on
/// their allnodes order. It returns the maximum id.
unsigned AssignNodeIds();
/// AssignTopologicalOrder - Assign a unique node id for each node in the DAG
/// based on their topological order. It returns the maximum id and a vector
/// of the SDNodes* in assigned order by reference.
unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder);
void dump() const;
/// InsertISelMapEntry - A helper function to insert a key / element pair
/// into a SDOperand to SDOperand map. This is added to avoid the map
/// insertion operator from being inlined.
static void InsertISelMapEntry(std::map<SDOperand, SDOperand> &Map,
SDNode *Key, unsigned KeyResNo,
SDNode *Element, unsigned ElementResNo);
private:
void RemoveNodeFromCSEMaps(SDNode *N);
SDNode *AddNonLeafNodeToCSEMaps(SDNode *N);
SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos);
SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2,
void *&InsertPos);
SDNode *FindModifiedNodeSlot(SDNode *N, const SDOperand *Ops, unsigned NumOps,
void *&InsertPos);
void DeleteNodeNotInCSEMaps(SDNode *N);
MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1);
MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1, MVT::ValueType VT2);
MVT::ValueType *getNodeValueTypes(std::vector<MVT::ValueType> &RetVals);
/// SimplifySetCC - Try to simplify a setcc built with the specified operands
/// and cc. If unable to simplify it, return a null SDOperand.
SDOperand SimplifySetCC(MVT::ValueType VT, SDOperand N1,
SDOperand N2, ISD::CondCode Cond);
// List of non-single value types.
std::list<std::vector<MVT::ValueType> > VTList;
// Maps to auto-CSE operations.
std::map<std::pair<unsigned, MVT::ValueType>, SDNode *> NullaryOps;
std::map<std::pair<unsigned, MVT::ValueType>, RegisterSDNode*> RegNodes;
std::vector<CondCodeSDNode*> CondCodeNodes;
std::map<std::pair<const GlobalValue*, int>, SDNode*> GlobalValues;
std::map<std::pair<const GlobalValue*, int>, SDNode*> TargetGlobalValues;
std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> Constants;
std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> TargetConstants;
std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> ConstantFPs;
std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> TargetConstantFPs;
std::map<int, SDNode*> FrameIndices, TargetFrameIndices, JumpTableIndices,
TargetJumpTableIndices;
std::map<std::pair<Constant *,
std::pair<int, unsigned> >, SDNode*> ConstantPoolIndices;
std::map<std::pair<Constant *,
std::pair<int, unsigned> >, SDNode*> TargetConstantPoolIndices;
std::map<MachineBasicBlock *, SDNode*> BBNodes;
std::vector<SDNode*> ValueTypeNodes;
std::map<std::string, SDNode*> ExternalSymbols;
std::map<std::string, SDNode*> TargetExternalSymbols;
std::map<std::string, StringSDNode*> StringNodes;
SelectionDAGCSEMap CSEMap;
};
template <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> {
typedef SelectionDAG::allnodes_iterator nodes_iterator;
static nodes_iterator nodes_begin(SelectionDAG *G) {
return G->allnodes_begin();
}
static nodes_iterator nodes_end(SelectionDAG *G) {
return G->allnodes_end();
}
};
} // end namespace llvm
#endif
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