//===-- 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
#ifndef LLVM_INSTRUCTIONS_H
#define LLVM_INSTRUCTIONS_H
-#include "llvm/iTerminators.h" // Terminator instructions
-#include "llvm/iPHINode.h" // The PHI node instruction
-#include "llvm/iOperators.h" // Binary operator instructions
-#include "llvm/iMemory.h" // Memory related instructions
-#include "llvm/iOther.h" // Everything else
+#include "llvm/Instruction.h"
+#include "llvm/InstrTypes.h"
+
+namespace llvm {
+
+class BasicBlock;
+class ConstantInt;
+class PointerType;
+
+//===----------------------------------------------------------------------===//
+// AllocationInst Class
+//===----------------------------------------------------------------------===//
+
+/// AllocationInst - This class is the common base class of MallocInst and
+/// AllocaInst.
+///
+class AllocationInst : public UnaryInstruction {
+protected:
+ AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
+ const std::string &Name = "", Instruction *InsertBefore = 0);
+ AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
+ const std::string &Name, BasicBlock *InsertAtEnd);
+
+public:
+
+ /// 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;
+
+ 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, Name, InsertBefore) {}
+ MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : AllocationInst(Ty, ArraySize, Malloc, Name, InsertAtEnd) {}
+
+ 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, Name, InsertBefore) {}
+ AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : AllocationInst(Ty, ArraySize, Alloca, 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));
+ }
+};
+
+
+//===----------------------------------------------------------------------===//
+// VANextInst Class
+//===----------------------------------------------------------------------===//
+
+/// VANextInst - This class represents the va_next llvm instruction, which
+/// advances a vararg list passed an argument of the specified type, returning
+/// the resultant list.
+///
+class VANextInst : public UnaryInstruction {
+ PATypeHolder ArgTy;
+ VANextInst(const VANextInst &VAN)
+ : UnaryInstruction(VAN.getType(), VANext, VAN.getOperand(0)),
+ ArgTy(VAN.getArgType()) {
+ }
+
+public:
+ VANextInst(Value *List, const Type *Ty, const std::string &Name = "",
+ Instruction *InsertBefore = 0)
+ : UnaryInstruction(List->getType(), VANext, List, Name, InsertBefore),
+ ArgTy(Ty) {
+ }
+ VANextInst(Value *List, const Type *Ty, const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : UnaryInstruction(List->getType(), VANext, List, Name, InsertAtEnd),
+ ArgTy(Ty) {
+ }
+
+ const Type *getArgType() const { return ArgTy; }
+
+ virtual VANextInst *clone() const;
+
+ // Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const VANextInst *) { return true; }
+ static inline bool classof(const Instruction *I) {
+ return I->getOpcode() == VANext;
+ }
+ 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.
+///
+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;
+
+ // 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));
+ }
+};
+
+//===----------------------------------------------------------------------===//
+// 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 #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 #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));
+ }
+
+ /// 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
projects / oota-llvm.git / blobdiff