-//===-- llvm/CodeGen/SelectionDAG.h - InstSelection DAG Rep. ----*- C++ -*-===//
-//
-// This file declares the SelectionDAG class, which is used to represent an LLVM
-// function in a low-level 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.
+//===-- 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.
//
-// The representation used by the SelectionDAG is a target-independent
-// representation, which is loosly modeled after the GCC RTL representation, but
-// is significantly simpler.
-//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_SELECTIONDAG_H
#define LLVM_CODEGEN_SELECTIONDAG_H
-#include "llvm/CodeGen/ValueTypes.h"
-#include "Support/DataTypes.h"
+#include "llvm/CodeGen/SelectionDAGNodes.h"
#include <map>
-#include <vector>
-class Value;
-class Type;
-class Instruction;
-class BasicBlock;
-class MachineBasicBlock;
-class MachineFunction;
-class TargetMachine;
-class SelectionDAGNode;
-class SelectionDAGBlock;
-class SelectionDAGBuilder;
-class SelectionDAGTargetBuilder;
-
-/// ISD namespace - This namespace contains an enum which represents all of the
-/// SelectionDAG node types and value types.
+#include <string> // FIXME remove eventually, turning map into const char* map.
+
+namespace llvm {
+ class TargetLowering;
+ class TargetMachine;
+ 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.
///
-namespace ISD {
- enum NodeType {
- // ChainNode nodes are used to sequence operations within a basic block
- // which cannot be reordered (such as loads, stores, calls, etc).
- // BlockChainNodes are used to connect the DAG's for different basic blocks
- // into one big DAG.
- ChainNode, BlockChainNode,
-
- // ProtoNodes are nodes that are only half way constructed.
- ProtoNode,
-
- // Leaf nodes.
- Constant, FrameIndex,
+/// 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;
- // Simple binary arithmetic operators
- Plus, Minus, Times, SDiv, UDiv, SRem, URem,
+ // Root - The root of the entire DAG. EntryNode - The starting token.
+ SDOperand Root, EntryNode;
- // Bitwise operators
- And, Or, Xor,
+ // AllNodes - All of the nodes in the DAG
+ std::vector<SDNode*> AllNodes;
- // Control flow instructions
- Br, Switch, Ret, RetVoid,
+ // ValueNodes - track SrcValue nodes
+ std::map<std::pair<const Value*, int>, SDNode*> ValueNodes;
- // Other operators
- Load, Store, PHI, Call,
- };
-}
+public:
+ SelectionDAG(TargetLowering &tli, MachineFunction &mf) : TLI(tli), MF(mf) {
+ EntryNode = Root = getNode(ISD::EntryToken, MVT::Other);
+ }
+ ~SelectionDAG();
-class SelectionDAG {
- friend class SelectionDAGBuilder;
- MachineFunction &F;
- const TargetMachine &TM;
- MVT::ValueType PointerType; // The ValueType the target uses for pointers
+ MachineFunction &getMachineFunction() const { return MF; }
+ const TargetMachine &getTarget() const;
+ TargetLowering &getTargetLoweringInfo() const { return TLI; }
- // ValueMap - The SelectionDAGNode for each LLVM value in the function.
- std::map<const Value*, SelectionDAGNode*> ValueMap;
+ /// viewGraph - Pop up a ghostview window with the DAG rendered using 'dot'.
+ ///
+ void viewGraph();
- // BlockMap - The MachineBasicBlock created for each LLVM BasicBlock
- std::map<const BasicBlock*, MachineBasicBlock*> BlockMap;
- // Root - The root of the entire DAG
- SelectionDAGNode *Root;
+ typedef std::vector<SDNode*>::const_iterator allnodes_iterator;
+ allnodes_iterator allnodes_begin() const { return AllNodes.begin(); }
+ allnodes_iterator allnodes_end() const { return AllNodes.end(); }
- // AllNodes - All of the nodes in the DAG
- std::vector<SelectionDAGNode*> AllNodes;
-public:
- /// SelectionDAG constructor - Build a SelectionDAG for the specified
- /// function. Implemented in DAGBuilder.cpp
+ /// getRoot - Return the root tag of the SelectionDAG.
///
- SelectionDAG(MachineFunction &F, const TargetMachine &TM,
- SelectionDAGTargetBuilder &SDTB);
- ~SelectionDAG();
+ const SDOperand &getRoot() const { return Root; }
- /// getValueType - Return the ValueType for the specified LLVM type. This
- /// method works on all scalar LLVM types.
- ///
- MVT::ValueType getValueType(const Type *Ty) const;
+ /// getEntryNode - Return the token chain corresponding to the entry of the
+ /// function.
+ const SDOperand &getEntryNode() const { return EntryNode; }
- /// getRoot - Return the root of the current SelectionDAG.
+ /// setRoot - Set the current root tag of the SelectionDAG.
///
- SelectionDAGNode *getRoot() const { return Root; }
+ const SDOperand &setRoot(SDOperand N) { return Root = N; }
- /// getMachineFunction - Return the MachineFunction object that this
- /// SelectionDAG corresponds to.
+ /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is
+ /// compatible with the target instruction selector, as indicated by the
+ /// TargetLowering object.
///
- MachineFunction &getMachineFunction() const { return F; }
+ /// 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, including nodes (like loads) that have uses of their token
+ /// chain but no other uses and no side effect. If a node is passed in as an
+ /// argument, it is used as the seed for node deletion.
+ void RemoveDeadNodes(SDNode *N = 0);
+
+ SDOperand getConstant(uint64_t Val, MVT::ValueType VT);
+ SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT);
+ SDOperand getConstantFP(double Val, MVT::ValueType VT);
+ SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT);
+ SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT);
+ SDOperand getFrameIndex(int FI, MVT::ValueType VT);
+ SDOperand getConstantPool(unsigned CPIdx, MVT::ValueType VT);
+ SDOperand getBasicBlock(MachineBasicBlock *MBB);
+ SDOperand getExternalSymbol(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);
+ }
- //===--------------------------------------------------------------------===//
- // Addition and updating methods
- //
+ SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) {
+ std::vector<MVT::ValueType> ResultTys;
+ ResultTys.push_back(VT);
+ ResultTys.push_back(MVT::Other);
+ std::vector<SDOperand> Ops;
+ Ops.push_back(Chain);
+ Ops.push_back(getRegister(Reg, VT));
+ return getNode(ISD::CopyFromReg, ResultTys, Ops);
+ }
- /// addNode - Add the specified node to the SelectionDAG so that it will be
- /// deleted when the DAG is...
- ///
- SelectionDAGNode *addNode(SelectionDAGNode *N) {
- AllNodes.push_back(N);
- return N;
+ SDOperand getImplicitDef(SDOperand Chain, unsigned Reg, MVT::ValueType VT) {
+ return getNode(ISD::ImplicitDef, MVT::Other, Chain, getRegister(Reg, VT));
}
- /// addNodeForValue - Add the specified node to the SelectionDAG so that it
- /// will be deleted when the DAG is... and update the value map to indicate
- /// that the specified DAG node computes the value. Note that it is an error
- /// to specify multiple DAG nodes that compute the same value.
+ /// getCall - Note that this destroys the vector of RetVals passed in.
///
- SelectionDAGNode *addNodeForValue(SelectionDAGNode *N, const Value *V) {
- assert(ValueMap.count(V) == 0 && "Value already has a DAG node!");
- return addNode(ValueMap[V] = N);
+ SDNode *getCall(std::vector<MVT::ValueType> &RetVals, SDOperand Chain,
+ SDOperand Callee, bool isTailCall = false) {
+ SDNode *NN = new SDNode(isTailCall ? ISD::TAILCALL : ISD::CALL, Chain,
+ Callee);
+ NN->setValueTypes(RetVals);
+ AllNodes.push_back(NN);
+ return NN;
}
- void dump() const;
-private:
- void addInstructionToDAG(const Instruction &I, const BasicBlock &BB);
-};
+ /// getCall - This is identical to the one above, and should be used for calls
+ /// where arguments are passed in physical registers. This destroys the
+ /// RetVals and ArgsInRegs vectors.
+ SDNode *getCall(std::vector<MVT::ValueType> &RetVals, SDOperand Chain,
+ SDOperand Callee, std::vector<SDOperand> &ArgsInRegs,
+ bool isTailCall = false) {
+ ArgsInRegs.insert(ArgsInRegs.begin(), Callee);
+ ArgsInRegs.insert(ArgsInRegs.begin(), Chain);
+ SDNode *NN = new SDNode(isTailCall ? ISD::TAILCALL : ISD::CALL, ArgsInRegs);
+ NN->setValueTypes(RetVals);
+ AllNodes.push_back(NN);
+ return NN;
+ }
+ SDOperand getCondCode(ISD::CondCode Cond);
-/// SelectionDAGReducedValue - During the reducer pass we need the ability to
-/// add an arbitrary (but usually 1 or 0) number of arbitrarily sized values to
-/// the selection DAG. Because of this, we represent these values as a singly
-/// linked list of values attached to the DAGNode. We end up putting the
-/// arbitrary state for the value in subclasses of this node.
-///
-/// Note that this class does not have a virtual dtor, this is because we know
-/// that the subclasses will not hold state that needs to be destroyed.
-///
-class SelectionDAGReducedValue {
- unsigned Code;
- SelectionDAGReducedValue *Next;
-public:
- SelectionDAGReducedValue(unsigned C) : Code(C), Next(0) {}
+ /// 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);
- /// getValueCode - Return the code for this reducer value...
+ /// getNode - Gets or creates the specified node.
///
- unsigned getValueCode() const { return Code; }
-
- /// getNext - Return the next value in the list
+ 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,
+ std::vector<SDOperand> &Children);
+ SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys,
+ std::vector<SDOperand> &Ops);
+
+ /// getSetCC - Helper function to make it easier to build SetCC's if you just
+ /// have an ISD::CondCode instead of an SDOperand.
///
- const SelectionDAGReducedValue *getNext() const { return Next; }
- void setNext(SelectionDAGReducedValue *N) { Next = N; }
-
- SelectionDAGReducedValue *getNext() { return Next; }
-};
-
-
-
-/// SelectionDAGNode - Represents one node in the selection DAG.
-///
-class SelectionDAGNode {
- std::vector<SelectionDAGNode*> Uses;
- ISD::NodeType NodeType;
- MVT::ValueType ValueType;
- MachineBasicBlock *BB;
- SelectionDAGReducedValue *ValList;
-
- /// Costs - Each pair of elements of 'Costs' contains the cost of producing
- /// the value with the target specific slot number and the production number
- /// to use to produce it. A zero value for the production number indicates
- /// that the cost has not yet been computed.
- unsigned *Costs;
-public:
- SelectionDAGNode(ISD::NodeType NT, MVT::ValueType VT,
- MachineBasicBlock *bb = 0)
- : NodeType(NT), ValueType(VT), BB(bb), ValList(0), Costs(0) {}
-
- SelectionDAGNode(ISD::NodeType NT, MVT::ValueType VT, MachineBasicBlock *bb,
- SelectionDAGNode *N)
- : NodeType(NT), ValueType(VT), BB(bb), ValList(0), Costs(0) {
- assert(NT != ISD::ProtoNode && "Cannot specify uses for a protonode!");
- Uses.reserve(1); Uses.push_back(N);
+ SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS,
+ ISD::CondCode Cond) {
+ return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond));
}
- SelectionDAGNode(ISD::NodeType NT, MVT::ValueType VT, MachineBasicBlock *bb,
- SelectionDAGNode *N1, SelectionDAGNode *N2)
- : NodeType(NT), ValueType(VT), BB(bb), ValList(0), Costs(0) {
- assert(NT != ISD::ProtoNode && "Cannot specify uses for a protonode!");
- Uses.reserve(2); Uses.push_back(N1); Uses.push_back(N2);
- }
-
- ~SelectionDAGNode() { delete [] Costs; delete ValList; }
- void setNode(ISD::NodeType NT, MachineBasicBlock *bb) {
- assert(NodeType == ISD::ProtoNode && NT != ISD::ProtoNode);
- NodeType = NT; BB = bb;
- }
- void setNode(ISD::NodeType NT, MachineBasicBlock *bb, SelectionDAGNode *N) {
- assert(NodeType == ISD::ProtoNode && NT != ISD::ProtoNode);
- NodeType = NT; BB = bb; Uses.reserve(1); Uses.push_back(N);
+ /// 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));
}
- void setNode(ISD::NodeType NT, MachineBasicBlock *bb,
- SelectionDAGNode *N1, SelectionDAGNode *N2) {
- assert(NodeType == ISD::ProtoNode && NT != ISD::ProtoNode);
- NodeType = NT; BB = bb;
- Uses.reserve(1); Uses.push_back(N1); Uses.push_back(N2);
+
+ /// getBR2Way_CC - Helper function to make it easier to build BRTWOWAY_CC
+ /// nodes.
+ ///
+ SDOperand getBR2Way_CC(SDOperand Chain, SDOperand CCNode, SDOperand LHS,
+ SDOperand RHS, SDOperand True, SDOperand False) {
+ std::vector<SDOperand> Ops;
+ Ops.push_back(Chain);
+ Ops.push_back(CCNode);
+ Ops.push_back(LHS);
+ Ops.push_back(RHS);
+ Ops.push_back(True);
+ Ops.push_back(False);
+ return getNode(ISD::BRTWOWAY_CC, MVT::Other, Ops);
}
- //===--------------------------------------------------------------------===//
- // Accessors
- //
- ISD::NodeType getNodeType() const { return NodeType; }
- MVT::ValueType getValueType() const { return ValueType; }
- MachineBasicBlock *getBB() const { return BB; }
+ /// 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 getExtLoad(unsigned Opcode, MVT::ValueType VT, SDOperand Chain,
+ SDOperand Ptr, SDOperand SV, MVT::ValueType EVT);
- SelectionDAGNode *getUse(unsigned Num) {
- assert(Num < Uses.size() && "Invalid child # of SelectionDAGNode!");
- return Uses[Num];
- }
+ // getSrcValue - construct a node to track a Value* through the backend
+ SDOperand getSrcValue(const Value* I, int offset = 0);
- template<class Type>
- Type *getValue(unsigned Code) const {
- SelectionDAGReducedValue *Vals = ValList;
- while (1) {
- assert(Vals && "Code does not exist in this list!");
- if (Vals->getValueCode() == Code)
- return (Type*)Vals;
- Vals = Vals->getNext();
- }
+
+ /// 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.
+ void SelectNodeTo(SDNode *N, MVT::ValueType VT, unsigned TargetOpc,
+ SDOperand Op1);
+ void SelectNodeTo(SDNode *N, MVT::ValueType VT, unsigned TargetOpc,
+ SDOperand Op1, SDOperand Op2);
+ void SelectNodeTo(SDNode *N, MVT::ValueType VT, unsigned TargetOpc,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3);
+ void SelectNodeTo(SDNode *N, MVT::ValueType VT, unsigned TargetOpc,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3, SDOperand Op4);
+
+ SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1) {
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1);
}
-
- template<class Type>
- Type *hasValue(unsigned Code) const {
- SelectionDAGReducedValue *Vals = ValList;
- while (Vals) {
- if (Vals->getValueCode() == Code)
- return (Type*)Vals;
- Vals = Vals->getNext();
- }
- return false;
+ SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2) {
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2);
}
-
- void addValue(SelectionDAGReducedValue *New) {
- assert(New->getNext() == 0);
- New->setNext(ValList);
- ValList = New;
+ SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3) {
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3);
}
-
- //===--------------------------------------------------------------------===//
- // Utility methods used by the pattern matching instruction selector
- //
-
- /// getPatternFor - Return the pattern selected to compute the specified slot,
- /// or zero if there is no pattern yet.
- ///
- unsigned getPatternFor(unsigned Slot) const {
- return Costs ? Costs[Slot*2] : 0;
+ SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3,
+ SDOperand Op4) {
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3, Op4);
}
-
- /// getCostFor - Return the cost to compute the value corresponding to Slot.
- ///
- unsigned getCostFor(unsigned Slot) const {
- return Costs ? Costs[Slot*2+1] : 0;
+ SDOperand getTargetNode(unsigned Opcode, MVT::ValueType VT,
+ SDOperand Op1, SDOperand Op2, SDOperand Op3,
+ SDOperand Op4, SDOperand Op5) {
+ return getNode(ISD::BUILTIN_OP_END+Opcode, VT, Op1, Op2, Op3, Op4, Op5);
}
-
- /// setPatternCostFor - Sets the pattern and the cost for the specified slot
- /// to the specified values. This allocates the Costs vector if necessary, so
- /// you must specify the maximum number of slots that may be used.
+
+ /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead.
+ /// This can cause recursive merging of nodes in the DAG.
///
- void setPatternCostFor(unsigned Slot, unsigned Pattern, unsigned Cost,
- unsigned NumSlots) {
- if (Costs == 0) {
- Costs = new unsigned[NumSlots*2];
- for (unsigned i = 0; i != NumSlots*2; ++i) Costs[i] = 0;
- }
- Costs[Slot*2] = Pattern;
- Costs[Slot*2+1] = Cost;
- }
-
+ void ReplaceAllUsesWith(SDNode *From, SDNode *To);
+
void dump() const;
+
private:
- void printit(unsigned Offset, unsigned &LastID,
- std::map<const SelectionDAGNode*, unsigned> &NodeIDs) const;
+ void RemoveNodeFromCSEMaps(SDNode *N);
+ SDNode *AddNonLeafNodeToCSEMaps(SDNode *N);
+ void DeleteNodeIfDead(SDNode *N, void *NodeSet);
+
+ /// 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);
+
+ /// SimplifySelectCC - Try to simplify a select_cc built with the specified
+ /// operands and cc. This can be used to simplify both the select_cc node,
+ /// and a select node whose first operand is a setcc.
+ SDOperand SimplifySelectCC(SDOperand N1, SDOperand N2, SDOperand N3,
+ SDOperand N4, ISD::CondCode CC);
+
+ // Maps to auto-CSE operations.
+ std::map<std::pair<unsigned, std::pair<SDOperand, MVT::ValueType> >,
+ SDNode *> UnaryOps;
+ std::map<std::pair<unsigned, std::pair<SDOperand, SDOperand> >,
+ SDNode *> BinaryOps;
+
+ std::vector<RegisterSDNode*> RegNodes;
+ std::vector<CondCodeSDNode*> CondCodeNodes;
+
+ std::map<std::pair<SDOperand, std::pair<SDOperand, MVT::ValueType> >,
+ SDNode *> Loads;
+
+ std::map<const GlobalValue*, SDNode*> GlobalValues;
+ std::map<const GlobalValue*, 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<int, SDNode*> FrameIndices;
+ std::map<unsigned, SDNode*> ConstantPoolIndices;
+ std::map<MachineBasicBlock *, SDNode*> BBNodes;
+ std::vector<SDNode*> ValueTypeNodes;
+ std::map<std::string, SDNode*> ExternalSymbols;
+ std::map<std::pair<unsigned,
+ std::pair<MVT::ValueType, std::vector<SDOperand> > >,
+ SDNode*> OneResultNodes;
+ std::map<std::pair<unsigned,
+ std::pair<std::vector<MVT::ValueType>,
+ std::vector<SDOperand> > >,
+ SDNode*> ArbitraryNodes;
};
-
-/// SelectionDAGTargetBuilder - This class must be implemented by the target, to
-/// indicate how to perform the extremely target-specific tasks of building DAG
-/// nodes to represent the calling convention used by the target.
-///
-struct SelectionDAGTargetBuilder {
- /// expandArguments - This method is called once by the SelectionDAG
- /// construction mechanisms to add DAG nodes for each formal argument to the
- /// current function. If any of the incoming arguments lives on the stack,
- /// this method should also create the stack slots for the arguments as
- /// necessary.
- virtual void expandArguments(SelectionDAG &SD, MachineFunction &MF) = 0;
+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();
+ }
};
-namespace ISD {
- enum { // Builtin Slot numbers
- Constant_i1_Slot,
- Constant_i8_Slot,
- Constant_i16_Slot,
- Constant_i32_Slot,
- Constant_i64_Slot,
- Constant_f32_Slot,
- Constant_f64_Slot,
-
- FrameIndex_i32_Slot,
- FrameIndex_i64_Slot,
- NumBuiltinSlots
- };
}
-template<typename ValType, unsigned NodeCode>
-struct ReducedValue : public SelectionDAGReducedValue {
- ReducedValue(const ValType &V) : SelectionDAGReducedValue(NodeCode), Val(V) {}
- ValType Val;
-};
-
-typedef ReducedValue<int, ISD::FrameIndex_i32_Slot > ReducedValue_FrameIndex_i32;
-typedef ReducedValue<int, ISD::FrameIndex_i64_Slot > ReducedValue_FrameIndex_i64;
-
-typedef ReducedValue<bool , ISD::Constant_i1_Slot > ReducedValue_Constant_i1;
-typedef ReducedValue<unsigned char , ISD::Constant_i8_Slot > ReducedValue_Constant_i8;
-typedef ReducedValue<unsigned short, ISD::Constant_i16_Slot> ReducedValue_Constant_i16;
-typedef ReducedValue<unsigned , ISD::Constant_i32_Slot> ReducedValue_Constant_i32;
-typedef ReducedValue<uint64_t , ISD::Constant_i64_Slot> ReducedValue_Constant_i64;
-typedef ReducedValue<float , ISD::Constant_f32_Slot> ReducedValue_Constant_f32;
-typedef ReducedValue<double , ISD::Constant_f64_Slot> ReducedValue_Constant_f64;
-
#endif
projects / oota-llvm.git / blobdiff