| //===-- llvm/Instructions.h - Instruction subclass definitions --*- 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 exposes the class definitions of all of the subclasses of the |
| // Instruction class. This is meant to be an easy way to get access to all |
| // instruction subclasses. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_INSTRUCTIONS_H |
| #define LLVM_INSTRUCTIONS_H |
| |
| #include "llvm/Instruction.h" |
| #include "llvm/InstrTypes.h" |
| |
| namespace llvm { |
| |
| class BasicBlock; |
| class ConstantInt; |
| class PointerType; |
| class PackedType; |
| |
| //===----------------------------------------------------------------------===// |
| // AllocationInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// AllocationInst - This class is the common base class of MallocInst and |
| /// AllocaInst. |
| /// |
| class AllocationInst : public UnaryInstruction { |
| unsigned Alignment; |
| protected: |
| AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align, |
| const std::string &Name = "", Instruction *InsertBefore = 0); |
| AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| public: |
| // Out of line virtual method, so the vtable, etc has a home. |
| virtual ~AllocationInst(); |
| |
| /// isArrayAllocation - Return true if there is an allocation size parameter |
| /// to the allocation instruction that is not 1. |
| /// |
| bool isArrayAllocation() const; |
| |
| /// getArraySize - Get the number of element allocated, for a simple |
| /// allocation of a single element, this will return a constant 1 value. |
| /// |
| inline const Value *getArraySize() const { return getOperand(0); } |
| inline Value *getArraySize() { return getOperand(0); } |
| |
| /// getType - Overload to return most specific pointer type |
| /// |
| inline const PointerType *getType() const { |
| return reinterpret_cast<const PointerType*>(Instruction::getType()); |
| } |
| |
| /// getAllocatedType - Return the type that is being allocated by the |
| /// instruction. |
| /// |
| const Type *getAllocatedType() const; |
| |
| /// getAlignment - Return the alignment of the memory that is being allocated |
| /// by the instruction. |
| /// |
| unsigned getAlignment() const { return Alignment; } |
| void setAlignment(unsigned Align) { |
| assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!"); |
| Alignment = Align; |
| } |
| |
| virtual Instruction *clone() const = 0; |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const AllocationInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Alloca || |
| I->getOpcode() == Instruction::Malloc; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // MallocInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// MallocInst - an instruction to allocated memory on the heap |
| /// |
| class MallocInst : public AllocationInst { |
| MallocInst(const MallocInst &MI); |
| public: |
| explicit MallocInst(const Type *Ty, Value *ArraySize = 0, |
| const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertBefore) {} |
| MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertAtEnd) {} |
| |
| explicit MallocInst(const Type *Ty, const std::string &Name, |
| Instruction *InsertBefore = 0) |
| : AllocationInst(Ty, 0, Malloc, 0, Name, InsertBefore) {} |
| MallocInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd) |
| : AllocationInst(Ty, 0, Malloc, 0, Name, InsertAtEnd) {} |
| |
| MallocInst(const Type *Ty, Value *ArraySize, unsigned Align, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertAtEnd) {} |
| MallocInst(const Type *Ty, Value *ArraySize, unsigned Align, |
| const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertBefore) {} |
| |
| virtual MallocInst *clone() const; |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const MallocInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Malloc); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // AllocaInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// AllocaInst - an instruction to allocate memory on the stack |
| /// |
| class AllocaInst : public AllocationInst { |
| AllocaInst(const AllocaInst &); |
| public: |
| explicit AllocaInst(const Type *Ty, Value *ArraySize = 0, |
| const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertBefore) {} |
| AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertAtEnd) {} |
| |
| AllocaInst(const Type *Ty, const std::string &Name, |
| Instruction *InsertBefore = 0) |
| : AllocationInst(Ty, 0, Alloca, 0, Name, InsertBefore) {} |
| AllocaInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd) |
| : AllocationInst(Ty, 0, Alloca, 0, Name, InsertAtEnd) {} |
| |
| AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align, |
| const std::string &Name = "", Instruction *InsertBefore = 0) |
| : AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertBefore) {} |
| AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align, |
| const std::string &Name, BasicBlock *InsertAtEnd) |
| : AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertAtEnd) {} |
| |
| virtual AllocaInst *clone() const; |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const AllocaInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Alloca); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // FreeInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// FreeInst - an instruction to deallocate memory |
| /// |
| class FreeInst : public UnaryInstruction { |
| void AssertOK(); |
| public: |
| explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0); |
| FreeInst(Value *Ptr, BasicBlock *InsertAfter); |
| |
| virtual FreeInst *clone() const; |
| |
| virtual bool mayWriteToMemory() const { return true; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const FreeInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Free); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // LoadInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// LoadInst - an instruction for reading from memory. This uses the |
| /// SubclassData field in Value to store whether or not the load is volatile. |
| /// |
| class LoadInst : public UnaryInstruction { |
| LoadInst(const LoadInst &LI) |
| : UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) { |
| setVolatile(LI.isVolatile()); |
| |
| #ifndef NDEBUG |
| AssertOK(); |
| #endif |
| } |
| void AssertOK(); |
| public: |
| LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore); |
| LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd); |
| LoadInst(Value *Ptr, const std::string &Name = "", bool isVolatile = false, |
| Instruction *InsertBefore = 0); |
| LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, |
| BasicBlock *InsertAtEnd); |
| |
| /// isVolatile - Return true if this is a load from a volatile memory |
| /// location. |
| /// |
| bool isVolatile() const { return SubclassData; } |
| |
| /// setVolatile - Specify whether this is a volatile load or not. |
| /// |
| void setVolatile(bool V) { SubclassData = V; } |
| |
| virtual LoadInst *clone() const; |
| |
| virtual bool mayWriteToMemory() const { return isVolatile(); } |
| |
| Value *getPointerOperand() { return getOperand(0); } |
| const Value *getPointerOperand() const { return getOperand(0); } |
| static unsigned getPointerOperandIndex() { return 0U; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const LoadInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Load; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // StoreInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// StoreInst - an instruction for storing to memory |
| /// |
| class StoreInst : public Instruction { |
| Use Ops[2]; |
| StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) { |
| Ops[0].init(SI.Ops[0], this); |
| Ops[1].init(SI.Ops[1], this); |
| setVolatile(SI.isVolatile()); |
| #ifndef NDEBUG |
| AssertOK(); |
| #endif |
| } |
| void AssertOK(); |
| public: |
| StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore); |
| StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd); |
| StoreInst(Value *Val, Value *Ptr, bool isVolatile = false, |
| Instruction *InsertBefore = 0); |
| StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd); |
| |
| |
| /// isVolatile - Return true if this is a load from a volatile memory |
| /// location. |
| /// |
| bool isVolatile() const { return SubclassData; } |
| |
| /// setVolatile - Specify whether this is a volatile load or not. |
| /// |
| void setVolatile(bool V) { SubclassData = V; } |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < 2 && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < 2 && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| unsigned getNumOperands() const { return 2; } |
| |
| |
| virtual StoreInst *clone() const; |
| |
| virtual bool mayWriteToMemory() const { return true; } |
| |
| Value *getPointerOperand() { return getOperand(1); } |
| const Value *getPointerOperand() const { return getOperand(1); } |
| static unsigned getPointerOperandIndex() { return 1U; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const StoreInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Store; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // GetElementPtrInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// GetElementPtrInst - an instruction for type-safe pointer arithmetic to |
| /// access elements of arrays and structs |
| /// |
| class GetElementPtrInst : public Instruction { |
| GetElementPtrInst(const GetElementPtrInst &GEPI) |
| : Instruction(reinterpret_cast<const Type*>(GEPI.getType()), GetElementPtr, |
| 0, GEPI.getNumOperands()) { |
| Use *OL = OperandList = new Use[NumOperands]; |
| Use *GEPIOL = GEPI.OperandList; |
| for (unsigned i = 0, E = NumOperands; i != E; ++i) |
| OL[i].init(GEPIOL[i], this); |
| } |
| void init(Value *Ptr, const std::vector<Value*> &Idx); |
| void init(Value *Ptr, Value *Idx0, Value *Idx1); |
| void init(Value *Ptr, Value *Idx); |
| public: |
| /// Constructors - Create a getelementptr instruction with a base pointer an |
| /// list of indices. The first ctor can optionally insert before an existing |
| /// instruction, the second appends the new instruction to the specified |
| /// BasicBlock. |
| GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx, |
| const std::string &Name = "", Instruction *InsertBefore =0); |
| GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| |
| /// Constructors - These two constructors are convenience methods because one |
| /// and two index getelementptr instructions are so common. |
| GetElementPtrInst(Value *Ptr, Value *Idx, |
| const std::string &Name = "", Instruction *InsertBefore =0); |
| GetElementPtrInst(Value *Ptr, Value *Idx, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1, |
| const std::string &Name = "", Instruction *InsertBefore =0); |
| GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| ~GetElementPtrInst(); |
| |
| virtual GetElementPtrInst *clone() const; |
| |
| // getType - Overload to return most specific pointer type... |
| inline const PointerType *getType() const { |
| return reinterpret_cast<const PointerType*>(Instruction::getType()); |
| } |
| |
| /// getIndexedType - Returns the type of the element that would be loaded with |
| /// a load instruction with the specified parameters. |
| /// |
| /// A null type is returned if the indices are invalid for the specified |
| /// pointer type. |
| /// |
| static const Type *getIndexedType(const Type *Ptr, |
| const std::vector<Value*> &Indices, |
| bool AllowStructLeaf = false); |
| static const Type *getIndexedType(const Type *Ptr, Value *Idx0, Value *Idx1, |
| bool AllowStructLeaf = false); |
| static const Type *getIndexedType(const Type *Ptr, Value *Idx); |
| |
| inline op_iterator idx_begin() { return op_begin()+1; } |
| inline const_op_iterator idx_begin() const { return op_begin()+1; } |
| inline op_iterator idx_end() { return op_end(); } |
| inline const_op_iterator idx_end() const { return op_end(); } |
| |
| Value *getPointerOperand() { |
| return getOperand(0); |
| } |
| const Value *getPointerOperand() const { |
| return getOperand(0); |
| } |
| static unsigned getPointerOperandIndex() { |
| return 0U; // get index for modifying correct operand |
| } |
| |
| inline unsigned getNumIndices() const { // Note: always non-negative |
| return getNumOperands() - 1; |
| } |
| |
| inline bool hasIndices() const { |
| return getNumOperands() > 1; |
| } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const GetElementPtrInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::GetElementPtr); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // SetCondInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// SetCondInst class - Represent a setCC operator, where CC is eq, ne, lt, gt, |
| /// le, or ge. |
| /// |
| class SetCondInst : public BinaryOperator { |
| public: |
| SetCondInst(BinaryOps Opcode, Value *LHS, Value *RHS, |
| const std::string &Name = "", Instruction *InsertBefore = 0); |
| SetCondInst(BinaryOps Opcode, Value *LHS, Value *RHS, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| |
| /// getInverseCondition - Return the inverse of the current condition opcode. |
| /// For example seteq -> setne, setgt -> setle, setlt -> setge, etc... |
| /// |
| BinaryOps getInverseCondition() const { |
| return getInverseCondition(getOpcode()); |
| } |
| |
| /// getInverseCondition - Static version that you can use without an |
| /// instruction available. |
| /// |
| static BinaryOps getInverseCondition(BinaryOps Opcode); |
| |
| /// getSwappedCondition - Return the condition opcode that would be the result |
| /// of exchanging the two operands of the setcc instruction without changing |
| /// the result produced. Thus, seteq->seteq, setle->setge, setlt->setgt, etc. |
| /// |
| BinaryOps getSwappedCondition() const { |
| return getSwappedCondition(getOpcode()); |
| } |
| |
| /// getSwappedCondition - Static version that you can use without an |
| /// instruction available. |
| /// |
| static BinaryOps getSwappedCondition(BinaryOps Opcode); |
| |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const SetCondInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == SetEQ || I->getOpcode() == SetNE || |
| I->getOpcode() == SetLE || I->getOpcode() == SetGE || |
| I->getOpcode() == SetLT || I->getOpcode() == SetGT; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // CastInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// CastInst - This class represents a cast from Operand[0] to the type of |
| /// the instruction (i->getType()). |
| /// |
| class CastInst : public UnaryInstruction { |
| CastInst(const CastInst &CI) |
| : UnaryInstruction(CI.getType(), Cast, CI.getOperand(0)) { |
| } |
| public: |
| CastInst(Value *S, const Type *Ty, const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : UnaryInstruction(Ty, Cast, S, Name, InsertBefore) { |
| } |
| CastInst(Value *S, const Type *Ty, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : UnaryInstruction(Ty, Cast, S, Name, InsertAtEnd) { |
| } |
| |
| virtual CastInst *clone() const; |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const CastInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Cast; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // CallInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// CallInst - This class represents a function call, abstracting a target |
| /// machine's calling convention. This class uses low bit of the SubClassData |
| /// field to indicate whether or not this is a tail call. The rest of the bits |
| /// hold the calling convention of the call. |
| /// |
| class CallInst : public Instruction { |
| CallInst(const CallInst &CI); |
| void init(Value *Func, const std::vector<Value*> &Params); |
| void init(Value *Func, Value *Actual1, Value *Actual2); |
| void init(Value *Func, Value *Actual); |
| void init(Value *Func); |
| |
| public: |
| CallInst(Value *F, const std::vector<Value*> &Par, |
| const std::string &Name = "", Instruction *InsertBefore = 0); |
| CallInst(Value *F, const std::vector<Value*> &Par, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| |
| // Alternate CallInst ctors w/ two actuals, w/ one actual and no |
| // actuals, respectively. |
| CallInst(Value *F, Value *Actual1, Value *Actual2, |
| const std::string& Name = "", Instruction *InsertBefore = 0); |
| CallInst(Value *F, Value *Actual1, Value *Actual2, |
| const std::string& Name, BasicBlock *InsertAtEnd); |
| CallInst(Value *F, Value *Actual, const std::string& Name = "", |
| Instruction *InsertBefore = 0); |
| CallInst(Value *F, Value *Actual, const std::string& Name, |
| BasicBlock *InsertAtEnd); |
| explicit CallInst(Value *F, const std::string &Name = "", |
| Instruction *InsertBefore = 0); |
| explicit CallInst(Value *F, const std::string &Name, |
| BasicBlock *InsertAtEnd); |
| ~CallInst(); |
| |
| virtual CallInst *clone() const; |
| bool mayWriteToMemory() const { return true; } |
| |
| bool isTailCall() const { return SubclassData & 1; } |
| void setTailCall(bool isTailCall = true) { |
| SubclassData = (SubclassData & ~1) | unsigned(isTailCall); |
| } |
| |
| /// getCallingConv/setCallingConv - Get or set the calling convention of this |
| /// function call. |
| unsigned getCallingConv() const { return SubclassData >> 1; } |
| void setCallingConv(unsigned CC) { |
| SubclassData = (SubclassData & 1) | (CC << 1); |
| } |
| |
| /// getCalledFunction - Return the function being called by this instruction |
| /// if it is a direct call. If it is a call through a function pointer, |
| /// return null. |
| Function *getCalledFunction() const { |
| return static_cast<Function*>(dyn_cast<Function>(getOperand(0))); |
| } |
| |
| // getCalledValue - Get a pointer to a method that is invoked by this inst. |
| inline const Value *getCalledValue() const { return getOperand(0); } |
| inline Value *getCalledValue() { return getOperand(0); } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const CallInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Call; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // ShiftInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// ShiftInst - This class represents left and right shift instructions. |
| /// |
| class ShiftInst : public Instruction { |
| Use Ops[2]; |
| ShiftInst(const ShiftInst &SI) |
| : Instruction(SI.getType(), SI.getOpcode(), Ops, 2) { |
| Ops[0].init(SI.Ops[0], this); |
| Ops[1].init(SI.Ops[1], this); |
| } |
| void init(OtherOps Opcode, Value *S, Value *SA) { |
| assert((Opcode == Shl || Opcode == Shr) && "ShiftInst Opcode invalid!"); |
| Ops[0].init(S, this); |
| Ops[1].init(SA, this); |
| } |
| |
| public: |
| ShiftInst(OtherOps Opcode, Value *S, Value *SA, const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : Instruction(S->getType(), Opcode, Ops, 2, Name, InsertBefore) { |
| init(Opcode, S, SA); |
| } |
| ShiftInst(OtherOps Opcode, Value *S, Value *SA, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(S->getType(), Opcode, Ops, 2, Name, InsertAtEnd) { |
| init(Opcode, S, SA); |
| } |
| |
| OtherOps getOpcode() const { |
| return static_cast<OtherOps>(Instruction::getOpcode()); |
| } |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < 2 && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < 2 && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| unsigned getNumOperands() const { return 2; } |
| |
| virtual ShiftInst *clone() const; |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const ShiftInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Shr) | |
| (I->getOpcode() == Instruction::Shl); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // SelectInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// SelectInst - This class represents the LLVM 'select' instruction. |
| /// |
| class SelectInst : public Instruction { |
| Use Ops[3]; |
| |
| void init(Value *C, Value *S1, Value *S2) { |
| Ops[0].init(C, this); |
| Ops[1].init(S1, this); |
| Ops[2].init(S2, this); |
| } |
| |
| SelectInst(const SelectInst &SI) |
| : Instruction(SI.getType(), SI.getOpcode(), Ops, 3) { |
| init(SI.Ops[0], SI.Ops[1], SI.Ops[2]); |
| } |
| public: |
| SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : Instruction(S1->getType(), Instruction::Select, Ops, 3, |
| Name, InsertBefore) { |
| init(C, S1, S2); |
| } |
| SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : Instruction(S1->getType(), Instruction::Select, Ops, 3, |
| Name, InsertAtEnd) { |
| init(C, S1, S2); |
| } |
| |
| Value *getCondition() const { return Ops[0]; } |
| Value *getTrueValue() const { return Ops[1]; } |
| Value *getFalseValue() const { return Ops[2]; } |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < 3 && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < 3 && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| unsigned getNumOperands() const { return 3; } |
| |
| OtherOps getOpcode() const { |
| return static_cast<OtherOps>(Instruction::getOpcode()); |
| } |
| |
| virtual SelectInst *clone() const; |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const SelectInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Select; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // VAArgInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// VAArgInst - This class represents the va_arg llvm instruction, which returns |
| /// an argument of the specified type given a va_list and increments that list |
| /// |
| class VAArgInst : public UnaryInstruction { |
| VAArgInst(const VAArgInst &VAA) |
| : UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {} |
| public: |
| VAArgInst(Value *List, const Type *Ty, const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : UnaryInstruction(Ty, VAArg, List, Name, InsertBefore) { |
| } |
| VAArgInst(Value *List, const Type *Ty, const std::string &Name, |
| BasicBlock *InsertAtEnd) |
| : UnaryInstruction(Ty, VAArg, List, Name, InsertAtEnd) { |
| } |
| |
| virtual VAArgInst *clone() const; |
| bool mayWriteToMemory() const { return true; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const VAArgInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == VAArg; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // ExtractElementInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// ExtractElementInst - This instruction extracts a single (scalar) |
| /// element from a PackedType value |
| /// |
| class ExtractElementInst : public Instruction { |
| Use Ops[2]; |
| ExtractElementInst(const ExtractElementInst &EE) : |
| Instruction(EE.getType(), ExtractElement, Ops, 2) { |
| Ops[0].init(EE.Ops[0], this); |
| Ops[1].init(EE.Ops[1], this); |
| } |
| |
| public: |
| ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name = "", |
| Instruction *InsertBefore = 0); |
| ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name, |
| BasicBlock *InsertAtEnd); |
| |
| /// isValidOperands - Return true if an extractelement instruction can be |
| /// formed with the specified operands. |
| static bool isValidOperands(const Value *Vec, const Value *Idx); |
| |
| virtual ExtractElementInst *clone() const; |
| |
| virtual bool mayWriteToMemory() const { return false; } |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < 2 && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < 2 && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| unsigned getNumOperands() const { return 2; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const ExtractElementInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::ExtractElement; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // InsertElementInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// InsertElementInst - This instruction inserts a single (scalar) |
| /// element into a PackedType value |
| /// |
| class InsertElementInst : public Instruction { |
| Use Ops[3]; |
| InsertElementInst(const InsertElementInst &IE); |
| public: |
| InsertElementInst(Value *Vec, Value *NewElt, Value *Idx, |
| const std::string &Name = "",Instruction *InsertBefore = 0); |
| InsertElementInst(Value *Vec, Value *NewElt, Value *Idx, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| |
| /// isValidOperands - Return true if an insertelement instruction can be |
| /// formed with the specified operands. |
| static bool isValidOperands(const Value *Vec, const Value *NewElt, |
| const Value *Idx); |
| |
| virtual InsertElementInst *clone() const; |
| |
| virtual bool mayWriteToMemory() const { return false; } |
| |
| /// getType - Overload to return most specific packed type. |
| /// |
| inline const PackedType *getType() const { |
| return reinterpret_cast<const PackedType*>(Instruction::getType()); |
| } |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < 3 && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < 3 && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| unsigned getNumOperands() const { return 3; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const InsertElementInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::InsertElement; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // ShuffleVectorInst Class |
| //===----------------------------------------------------------------------===// |
| |
| /// ShuffleVectorInst - This instruction constructs a fixed permutation of two |
| /// input vectors. |
| /// |
| class ShuffleVectorInst : public Instruction { |
| Use Ops[3]; |
| ShuffleVectorInst(const ShuffleVectorInst &IE); |
| public: |
| ShuffleVectorInst(Value *V1, Value *V2, Value *Mask, |
| const std::string &Name = "", Instruction *InsertBefor = 0); |
| ShuffleVectorInst(Value *V1, Value *V2, Value *Mask, |
| const std::string &Name, BasicBlock *InsertAtEnd); |
| |
| /// isValidOperands - Return true if a shufflevector instruction can be |
| /// formed with the specified operands. |
| static bool isValidOperands(const Value *V1, const Value *V2, |
| const Value *Mask); |
| |
| virtual ShuffleVectorInst *clone() const; |
| |
| virtual bool mayWriteToMemory() const { return false; } |
| |
| /// getType - Overload to return most specific packed type. |
| /// |
| inline const PackedType *getType() const { |
| return reinterpret_cast<const PackedType*>(Instruction::getType()); |
| } |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < 3 && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < 3 && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| unsigned getNumOperands() const { return 3; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const ShuffleVectorInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::ShuffleVector; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // PHINode Class |
| //===----------------------------------------------------------------------===// |
| |
| // PHINode - The PHINode class is used to represent the magical mystical PHI |
| // node, that can not exist in nature, but can be synthesized in a computer |
| // scientist's overactive imagination. |
| // |
| class PHINode : public Instruction { |
| /// ReservedSpace - The number of operands actually allocated. NumOperands is |
| /// the number actually in use. |
| unsigned ReservedSpace; |
| PHINode(const PHINode &PN); |
| public: |
| PHINode(const Type *Ty, const std::string &Name = "", |
| Instruction *InsertBefore = 0) |
| : Instruction(Ty, Instruction::PHI, 0, 0, Name, InsertBefore), |
| ReservedSpace(0) { |
| } |
| |
| PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd) |
| : Instruction(Ty, Instruction::PHI, 0, 0, Name, InsertAtEnd), |
| ReservedSpace(0) { |
| } |
| |
| ~PHINode(); |
| |
| /// reserveOperandSpace - This method can be used to avoid repeated |
| /// reallocation of PHI operand lists by reserving space for the correct |
| /// number of operands before adding them. Unlike normal vector reserves, |
| /// this method can also be used to trim the operand space. |
| void reserveOperandSpace(unsigned NumValues) { |
| resizeOperands(NumValues*2); |
| } |
| |
| virtual PHINode *clone() const; |
| |
| /// getNumIncomingValues - Return the number of incoming edges |
| /// |
| unsigned getNumIncomingValues() const { return getNumOperands()/2; } |
| |
| /// getIncomingValue - Return incoming value number x |
| /// |
| Value *getIncomingValue(unsigned i) const { |
| assert(i*2 < getNumOperands() && "Invalid value number!"); |
| return getOperand(i*2); |
| } |
| void setIncomingValue(unsigned i, Value *V) { |
| assert(i*2 < getNumOperands() && "Invalid value number!"); |
| setOperand(i*2, V); |
| } |
| unsigned getOperandNumForIncomingValue(unsigned i) { |
| return i*2; |
| } |
| |
| /// getIncomingBlock - Return incoming basic block number x |
| /// |
| BasicBlock *getIncomingBlock(unsigned i) const { |
| return reinterpret_cast<BasicBlock*>(getOperand(i*2+1)); |
| } |
| void setIncomingBlock(unsigned i, BasicBlock *BB) { |
| setOperand(i*2+1, reinterpret_cast<Value*>(BB)); |
| } |
| unsigned getOperandNumForIncomingBlock(unsigned i) { |
| return i*2+1; |
| } |
| |
| /// addIncoming - Add an incoming value to the end of the PHI list |
| /// |
| void addIncoming(Value *V, BasicBlock *BB) { |
| assert(getType() == V->getType() && |
| "All operands to PHI node must be the same type as the PHI node!"); |
| unsigned OpNo = NumOperands; |
| if (OpNo+2 > ReservedSpace) |
| resizeOperands(0); // Get more space! |
| // Initialize some new operands. |
| NumOperands = OpNo+2; |
| OperandList[OpNo].init(V, this); |
| OperandList[OpNo+1].init(reinterpret_cast<Value*>(BB), this); |
| } |
| |
| /// removeIncomingValue - Remove an incoming value. This is useful if a |
| /// predecessor basic block is deleted. The value removed is returned. |
| /// |
| /// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty |
| /// is true), the PHI node is destroyed and any uses of it are replaced with |
| /// dummy values. The only time there should be zero incoming values to a PHI |
| /// node is when the block is dead, so this strategy is sound. |
| /// |
| Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true); |
| |
| Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty =true){ |
| int Idx = getBasicBlockIndex(BB); |
| assert(Idx >= 0 && "Invalid basic block argument to remove!"); |
| return removeIncomingValue(Idx, DeletePHIIfEmpty); |
| } |
| |
| /// getBasicBlockIndex - Return the first index of the specified basic |
| /// block in the value list for this PHI. Returns -1 if no instance. |
| /// |
| int getBasicBlockIndex(const BasicBlock *BB) const { |
| Use *OL = OperandList; |
| for (unsigned i = 0, e = getNumOperands(); i != e; i += 2) |
| if (OL[i+1] == reinterpret_cast<const Value*>(BB)) return i/2; |
| return -1; |
| } |
| |
| Value *getIncomingValueForBlock(const BasicBlock *BB) const { |
| return getIncomingValue(getBasicBlockIndex(BB)); |
| } |
| |
| /// hasConstantValue - If the specified PHI node always merges together the |
| /// same value, return the value, otherwise return null. |
| /// |
| Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const; |
| |
| /// Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const PHINode *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::PHI; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| void resizeOperands(unsigned NumOperands); |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // ReturnInst Class |
| //===----------------------------------------------------------------------===// |
| |
| //===--------------------------------------------------------------------------- |
| /// ReturnInst - Return a value (possibly void), from a function. Execution |
| /// does not continue in this function any longer. |
| /// |
| class ReturnInst : public TerminatorInst { |
| Use RetVal; // Possibly null retval. |
| ReturnInst(const ReturnInst &RI) : TerminatorInst(Instruction::Ret, &RetVal, |
| RI.getNumOperands()) { |
| if (RI.getNumOperands()) |
| RetVal.init(RI.RetVal, this); |
| } |
| |
| void init(Value *RetVal); |
| |
| public: |
| // ReturnInst constructors: |
| // ReturnInst() - 'ret void' instruction |
| // ReturnInst( null) - 'ret void' instruction |
| // ReturnInst(Value* X) - 'ret X' instruction |
| // ReturnInst( null, Inst *) - 'ret void' instruction, insert before I |
| // ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I |
| // ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of BB |
| // ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of BB |
| // |
| // NOTE: If the Value* passed is of type void then the constructor behaves as |
| // if it was passed NULL. |
| ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0) |
| : TerminatorInst(Instruction::Ret, &RetVal, 0, InsertBefore) { |
| init(retVal); |
| } |
| ReturnInst(Value *retVal, BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Ret, &RetVal, 0, InsertAtEnd) { |
| init(retVal); |
| } |
| ReturnInst(BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Ret, &RetVal, 0, InsertAtEnd) { |
| } |
| |
| virtual ReturnInst *clone() const; |
| |
| // Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < getNumOperands() && "getOperand() out of range!"); |
| return RetVal; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < getNumOperands() && "setOperand() out of range!"); |
| RetVal = Val; |
| } |
| |
| Value *getReturnValue() const { return RetVal; } |
| |
| unsigned getNumSuccessors() const { return 0; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const ReturnInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Ret); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| virtual BasicBlock *getSuccessorV(unsigned idx) const; |
| virtual unsigned getNumSuccessorsV() const; |
| virtual void setSuccessorV(unsigned idx, BasicBlock *B); |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // BranchInst Class |
| //===----------------------------------------------------------------------===// |
| |
| //===--------------------------------------------------------------------------- |
| /// BranchInst - Conditional or Unconditional Branch instruction. |
| /// |
| class BranchInst : public TerminatorInst { |
| /// Ops list - Branches are strange. The operands are ordered: |
| /// TrueDest, FalseDest, Cond. This makes some accessors faster because |
| /// they don't have to check for cond/uncond branchness. |
| Use Ops[3]; |
| BranchInst(const BranchInst &BI); |
| void AssertOK(); |
| public: |
| // BranchInst constructors (where {B, T, F} are blocks, and C is a condition): |
| // BranchInst(BB *B) - 'br B' |
| // BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F' |
| // BranchInst(BB* B, Inst *I) - 'br B' insert before I |
| // BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I |
| // BranchInst(BB* B, BB *I) - 'br B' insert at end |
| // BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end |
| BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0) |
| : TerminatorInst(Instruction::Br, Ops, 1, InsertBefore) { |
| assert(IfTrue != 0 && "Branch destination may not be null!"); |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| } |
| BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond, |
| Instruction *InsertBefore = 0) |
| : TerminatorInst(Instruction::Br, Ops, 3, InsertBefore) { |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| Ops[1].init(reinterpret_cast<Value*>(IfFalse), this); |
| Ops[2].init(Cond, this); |
| #ifndef NDEBUG |
| AssertOK(); |
| #endif |
| } |
| |
| BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Br, Ops, 1, InsertAtEnd) { |
| assert(IfTrue != 0 && "Branch destination may not be null!"); |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| } |
| |
| BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond, |
| BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Br, Ops, 3, InsertAtEnd) { |
| Ops[0].init(reinterpret_cast<Value*>(IfTrue), this); |
| Ops[1].init(reinterpret_cast<Value*>(IfFalse), this); |
| Ops[2].init(Cond, this); |
| #ifndef NDEBUG |
| AssertOK(); |
| #endif |
| } |
| |
| |
| /// Transparently provide more efficient getOperand methods. |
| Value *getOperand(unsigned i) const { |
| assert(i < getNumOperands() && "getOperand() out of range!"); |
| return Ops[i]; |
| } |
| void setOperand(unsigned i, Value *Val) { |
| assert(i < getNumOperands() && "setOperand() out of range!"); |
| Ops[i] = Val; |
| } |
| |
| virtual BranchInst *clone() const; |
| |
| inline bool isUnconditional() const { return getNumOperands() == 1; } |
| inline bool isConditional() const { return getNumOperands() == 3; } |
| |
| inline Value *getCondition() const { |
| assert(isConditional() && "Cannot get condition of an uncond branch!"); |
| return getOperand(2); |
| } |
| |
| void setCondition(Value *V) { |
| assert(isConditional() && "Cannot set condition of unconditional branch!"); |
| setOperand(2, V); |
| } |
| |
| // setUnconditionalDest - Change the current branch to an unconditional branch |
| // targeting the specified block. |
| // FIXME: Eliminate this ugly method. |
| void setUnconditionalDest(BasicBlock *Dest) { |
| if (isConditional()) { // Convert this to an uncond branch. |
| NumOperands = 1; |
| Ops[1].set(0); |
| Ops[2].set(0); |
| } |
| setOperand(0, reinterpret_cast<Value*>(Dest)); |
| } |
| |
| unsigned getNumSuccessors() const { return 1+isConditional(); } |
| |
| BasicBlock *getSuccessor(unsigned i) const { |
| assert(i < getNumSuccessors() && "Successor # out of range for Branch!"); |
| return (i == 0) ? cast<BasicBlock>(getOperand(0)) : |
| cast<BasicBlock>(getOperand(1)); |
| } |
| |
| void setSuccessor(unsigned idx, BasicBlock *NewSucc) { |
| assert(idx < getNumSuccessors() && "Successor # out of range for Branch!"); |
| setOperand(idx, reinterpret_cast<Value*>(NewSucc)); |
| } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const BranchInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Br); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| virtual BasicBlock *getSuccessorV(unsigned idx) const; |
| virtual unsigned getNumSuccessorsV() const; |
| virtual void setSuccessorV(unsigned idx, BasicBlock *B); |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // SwitchInst Class |
| //===----------------------------------------------------------------------===// |
| |
| //===--------------------------------------------------------------------------- |
| /// SwitchInst - Multiway switch |
| /// |
| class SwitchInst : public TerminatorInst { |
| unsigned ReservedSpace; |
| // Operand[0] = Value to switch on |
| // Operand[1] = Default basic block destination |
| // Operand[2n ] = Value to match |
| // Operand[2n+1] = BasicBlock to go to on match |
| SwitchInst(const SwitchInst &RI); |
| void init(Value *Value, BasicBlock *Default, unsigned NumCases); |
| void resizeOperands(unsigned No); |
| public: |
| /// SwitchInst ctor - Create a new switch instruction, specifying a value to |
| /// switch on and a default destination. The number of additional cases can |
| /// be specified here to make memory allocation more efficient. This |
| /// constructor can also autoinsert before another instruction. |
| SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases, |
| Instruction *InsertBefore = 0) |
| : TerminatorInst(Instruction::Switch, 0, 0, InsertBefore) { |
| init(Value, Default, NumCases); |
| } |
| |
| /// SwitchInst ctor - Create a new switch instruction, specifying a value to |
| /// switch on and a default destination. The number of additional cases can |
| /// be specified here to make memory allocation more efficient. This |
| /// constructor also autoinserts at the end of the specified BasicBlock. |
| SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases, |
| BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Switch, 0, 0, InsertAtEnd) { |
| init(Value, Default, NumCases); |
| } |
| ~SwitchInst(); |
| |
| |
| // Accessor Methods for Switch stmt |
| inline Value *getCondition() const { return getOperand(0); } |
| void setCondition(Value *V) { setOperand(0, V); } |
| |
| inline BasicBlock *getDefaultDest() const { |
| return cast<BasicBlock>(getOperand(1)); |
| } |
| |
| /// getNumCases - return the number of 'cases' in this switch instruction. |
| /// Note that case #0 is always the default case. |
| unsigned getNumCases() const { |
| return getNumOperands()/2; |
| } |
| |
| /// getCaseValue - Return the specified case value. Note that case #0, the |
| /// default destination, does not have a case value. |
| ConstantInt *getCaseValue(unsigned i) { |
| assert(i && i < getNumCases() && "Illegal case value to get!"); |
| return getSuccessorValue(i); |
| } |
| |
| /// getCaseValue - Return the specified case value. Note that case #0, the |
| /// default destination, does not have a case value. |
| const ConstantInt *getCaseValue(unsigned i) const { |
| assert(i && i < getNumCases() && "Illegal case value to get!"); |
| return getSuccessorValue(i); |
| } |
| |
| /// findCaseValue - Search all of the case values for the specified constant. |
| /// If it is explicitly handled, return the case number of it, otherwise |
| /// return 0 to indicate that it is handled by the default handler. |
| unsigned findCaseValue(const ConstantInt *C) const { |
| for (unsigned i = 1, e = getNumCases(); i != e; ++i) |
| if (getCaseValue(i) == C) |
| return i; |
| return 0; |
| } |
| |
| /// addCase - Add an entry to the switch instruction... |
| /// |
| void addCase(ConstantInt *OnVal, BasicBlock *Dest); |
| |
| /// removeCase - This method removes the specified successor from the switch |
| /// instruction. Note that this cannot be used to remove the default |
| /// destination (successor #0). |
| /// |
| void removeCase(unsigned idx); |
| |
| virtual SwitchInst *clone() const; |
| |
| unsigned getNumSuccessors() const { return getNumOperands()/2; } |
| BasicBlock *getSuccessor(unsigned idx) const { |
| assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!"); |
| return cast<BasicBlock>(getOperand(idx*2+1)); |
| } |
| void setSuccessor(unsigned idx, BasicBlock *NewSucc) { |
| assert(idx < getNumSuccessors() && "Successor # out of range for switch!"); |
| setOperand(idx*2+1, reinterpret_cast<Value*>(NewSucc)); |
| } |
| |
| // getSuccessorValue - Return the value associated with the specified |
| // successor. |
| inline ConstantInt *getSuccessorValue(unsigned idx) const { |
| assert(idx < getNumSuccessors() && "Successor # out of range!"); |
| return reinterpret_cast<ConstantInt*>(getOperand(idx*2)); |
| } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const SwitchInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Switch; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| virtual BasicBlock *getSuccessorV(unsigned idx) const; |
| virtual unsigned getNumSuccessorsV() const; |
| virtual void setSuccessorV(unsigned idx, BasicBlock *B); |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // InvokeInst Class |
| //===----------------------------------------------------------------------===// |
| |
| //===--------------------------------------------------------------------------- |
| |
| /// InvokeInst - Invoke instruction. The SubclassData field is used to hold the |
| /// calling convention of the call. |
| /// |
| class InvokeInst : public TerminatorInst { |
| InvokeInst(const InvokeInst &BI); |
| void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, |
| const std::vector<Value*> &Params); |
| public: |
| InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, |
| const std::vector<Value*> &Params, const std::string &Name = "", |
| Instruction *InsertBefore = 0); |
| InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException, |
| const std::vector<Value*> &Params, const std::string &Name, |
| BasicBlock *InsertAtEnd); |
| ~InvokeInst(); |
| |
| virtual InvokeInst *clone() const; |
| |
| bool mayWriteToMemory() const { return true; } |
| |
| /// getCallingConv/setCallingConv - Get or set the calling convention of this |
| /// function call. |
| unsigned getCallingConv() const { return SubclassData; } |
| void setCallingConv(unsigned CC) { |
| SubclassData = CC; |
| } |
| |
| /// getCalledFunction - Return the function called, or null if this is an |
| /// indirect function invocation. |
| /// |
| Function *getCalledFunction() const { |
| return dyn_cast<Function>(getOperand(0)); |
| } |
| |
| // getCalledValue - Get a pointer to a function that is invoked by this inst. |
| inline Value *getCalledValue() const { return getOperand(0); } |
| |
| // get*Dest - Return the destination basic blocks... |
| BasicBlock *getNormalDest() const { |
| return cast<BasicBlock>(getOperand(1)); |
| } |
| BasicBlock *getUnwindDest() const { |
| return cast<BasicBlock>(getOperand(2)); |
| } |
| void setNormalDest(BasicBlock *B) { |
| setOperand(1, reinterpret_cast<Value*>(B)); |
| } |
| |
| void setUnwindDest(BasicBlock *B) { |
| setOperand(2, reinterpret_cast<Value*>(B)); |
| } |
| |
| inline BasicBlock *getSuccessor(unsigned i) const { |
| assert(i < 2 && "Successor # out of range for invoke!"); |
| return i == 0 ? getNormalDest() : getUnwindDest(); |
| } |
| |
| void setSuccessor(unsigned idx, BasicBlock *NewSucc) { |
| assert(idx < 2 && "Successor # out of range for invoke!"); |
| setOperand(idx+1, reinterpret_cast<Value*>(NewSucc)); |
| } |
| |
| unsigned getNumSuccessors() const { return 2; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const InvokeInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return (I->getOpcode() == Instruction::Invoke); |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| virtual BasicBlock *getSuccessorV(unsigned idx) const; |
| virtual unsigned getNumSuccessorsV() const; |
| virtual void setSuccessorV(unsigned idx, BasicBlock *B); |
| }; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // UnwindInst Class |
| //===----------------------------------------------------------------------===// |
| |
| //===--------------------------------------------------------------------------- |
| /// UnwindInst - Immediately exit the current function, unwinding the stack |
| /// until an invoke instruction is found. |
| /// |
| class UnwindInst : public TerminatorInst { |
| public: |
| UnwindInst(Instruction *InsertBefore = 0) |
| : TerminatorInst(Instruction::Unwind, 0, 0, InsertBefore) { |
| } |
| UnwindInst(BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Unwind, 0, 0, InsertAtEnd) { |
| } |
| |
| virtual UnwindInst *clone() const; |
| |
| unsigned getNumSuccessors() const { return 0; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const UnwindInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Unwind; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| virtual BasicBlock *getSuccessorV(unsigned idx) const; |
| virtual unsigned getNumSuccessorsV() const; |
| virtual void setSuccessorV(unsigned idx, BasicBlock *B); |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // UnreachableInst Class |
| //===----------------------------------------------------------------------===// |
| |
| //===--------------------------------------------------------------------------- |
| /// UnreachableInst - This function has undefined behavior. In particular, the |
| /// presence of this instruction indicates some higher level knowledge that the |
| /// end of the block cannot be reached. |
| /// |
| class UnreachableInst : public TerminatorInst { |
| public: |
| UnreachableInst(Instruction *InsertBefore = 0) |
| : TerminatorInst(Instruction::Unreachable, 0, 0, InsertBefore) { |
| } |
| UnreachableInst(BasicBlock *InsertAtEnd) |
| : TerminatorInst(Instruction::Unreachable, 0, 0, InsertAtEnd) { |
| } |
| |
| virtual UnreachableInst *clone() const; |
| |
| unsigned getNumSuccessors() const { return 0; } |
| |
| // Methods for support type inquiry through isa, cast, and dyn_cast: |
| static inline bool classof(const UnreachableInst *) { return true; } |
| static inline bool classof(const Instruction *I) { |
| return I->getOpcode() == Instruction::Unreachable; |
| } |
| static inline bool classof(const Value *V) { |
| return isa<Instruction>(V) && classof(cast<Instruction>(V)); |
| } |
| private: |
| virtual BasicBlock *getSuccessorV(unsigned idx) const; |
| virtual unsigned getNumSuccessorsV() const; |
| virtual void setSuccessorV(unsigned idx, BasicBlock *B); |
| }; |
| |
| } // End llvm namespace |
| |
| #endif |