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https://github.com/c64scene-ar/llvm-6502.git
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bfaf88a4d3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18775 91177308-0d34-0410-b5e6-96231b3b80d8
1231 lines
45 KiB
C++
1231 lines
45 KiB
C++
//===-- llvm/Instructions.h - Instruction subclass definitions --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file exposes the class definitions of all of the subclasses of the
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// Instruction class. This is meant to be an easy way to get access to all
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// instruction subclasses.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_INSTRUCTIONS_H
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#define LLVM_INSTRUCTIONS_H
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#include "llvm/Instruction.h"
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#include "llvm/InstrTypes.h"
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namespace llvm {
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class BasicBlock;
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class PointerType;
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//===----------------------------------------------------------------------===//
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// AllocationInst Class
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//===----------------------------------------------------------------------===//
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/// AllocationInst - This class is the common base class of MallocInst and
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/// AllocaInst.
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///
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class AllocationInst : public Instruction {
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protected:
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void init(const Type *Ty, Value *ArraySize, unsigned iTy);
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AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
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const std::string &Name = "", Instruction *InsertBefore = 0);
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AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
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const std::string &Name, BasicBlock *InsertAtEnd);
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public:
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/// isArrayAllocation - Return true if there is an allocation size parameter
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/// to the allocation instruction that is not 1.
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///
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bool isArrayAllocation() const;
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/// getArraySize - Get the number of element allocated, for a simple
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/// allocation of a single element, this will return a constant 1 value.
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///
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inline const Value *getArraySize() const { return Operands[0]; }
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inline Value *getArraySize() { return Operands[0]; }
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/// getType - Overload to return most specific pointer type
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///
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inline const PointerType *getType() const {
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return reinterpret_cast<const PointerType*>(Instruction::getType());
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}
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/// getAllocatedType - Return the type that is being allocated by the
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/// instruction.
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///
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const Type *getAllocatedType() const;
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virtual Instruction *clone() const = 0;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const AllocationInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Instruction::Alloca ||
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I->getOpcode() == Instruction::Malloc;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// MallocInst Class
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//===----------------------------------------------------------------------===//
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/// MallocInst - an instruction to allocated memory on the heap
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///
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class MallocInst : public AllocationInst {
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MallocInst(const MallocInst &MI);
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public:
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explicit MallocInst(const Type *Ty, Value *ArraySize = 0,
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const std::string &Name = "",
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, ArraySize, Malloc, Name, InsertBefore) {}
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MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name,
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BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, ArraySize, Malloc, Name, InsertAtEnd) {}
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virtual MallocInst *clone() const;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const MallocInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::Malloc);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// AllocaInst Class
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//===----------------------------------------------------------------------===//
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/// AllocaInst - an instruction to allocate memory on the stack
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///
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class AllocaInst : public AllocationInst {
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AllocaInst(const AllocaInst &);
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public:
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explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
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const std::string &Name = "",
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, ArraySize, Alloca, Name, InsertBefore) {}
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AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name,
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BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, ArraySize, Alloca, Name, InsertAtEnd) {}
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virtual AllocaInst *clone() const;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const AllocaInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::Alloca);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// FreeInst Class
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//===----------------------------------------------------------------------===//
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/// FreeInst - an instruction to deallocate memory
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///
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class FreeInst : public Instruction {
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void init(Value *Ptr);
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public:
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explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
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FreeInst(Value *Ptr, BasicBlock *InsertAfter);
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virtual FreeInst *clone() const;
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virtual bool mayWriteToMemory() const { return true; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const FreeInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::Free);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// LoadInst Class
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//===----------------------------------------------------------------------===//
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/// LoadInst - an instruction for reading from memory
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///
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class LoadInst : public Instruction {
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LoadInst(const LoadInst &LI) : Instruction(LI.getType(), Load) {
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Volatile = LI.isVolatile();
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init(LI.Operands[0]);
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}
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bool Volatile; // True if this is a volatile load
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void init(Value *Ptr);
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public:
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LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
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LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
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LoadInst(Value *Ptr, const std::string &Name = "", bool isVolatile = false,
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Instruction *InsertBefore = 0);
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LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
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BasicBlock *InsertAtEnd);
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/// isVolatile - Return true if this is a load from a volatile memory
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/// location.
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///
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bool isVolatile() const { return Volatile; }
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/// setVolatile - Specify whether this is a volatile load or not.
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///
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void setVolatile(bool V) { Volatile = V; }
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virtual LoadInst *clone() const;
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virtual bool mayWriteToMemory() const { return isVolatile(); }
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Value *getPointerOperand() { return getOperand(0); }
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const Value *getPointerOperand() const { return getOperand(0); }
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static unsigned getPointerOperandIndex() { return 0U; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const LoadInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Instruction::Load;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// StoreInst Class
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//===----------------------------------------------------------------------===//
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/// StoreInst - an instruction for storing to memory
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///
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class StoreInst : public Instruction {
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StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store) {
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Volatile = SI.isVolatile();
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init(SI.Operands[0], SI.Operands[1]);
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}
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bool Volatile; // True if this is a volatile store
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void init(Value *Val, Value *Ptr);
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public:
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StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
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StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
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Instruction *InsertBefore = 0);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
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/// isVolatile - Return true if this is a load from a volatile memory
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/// location.
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///
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bool isVolatile() const { return Volatile; }
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/// setVolatile - Specify whether this is a volatile load or not.
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///
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void setVolatile(bool V) { Volatile = V; }
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virtual StoreInst *clone() const;
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virtual bool mayWriteToMemory() const { return true; }
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Value *getPointerOperand() { return getOperand(1); }
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const Value *getPointerOperand() const { return getOperand(1); }
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static unsigned getPointerOperandIndex() { return 1U; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const StoreInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Instruction::Store;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// GetElementPtrInst Class
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//===----------------------------------------------------------------------===//
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/// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
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/// access elements of arrays and structs
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///
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class GetElementPtrInst : public Instruction {
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GetElementPtrInst(const GetElementPtrInst &EPI)
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: Instruction((static_cast<const Instruction*>(&EPI)->getType()),
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GetElementPtr) {
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Operands.reserve(EPI.Operands.size());
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for (unsigned i = 0, E = (unsigned)EPI.Operands.size(); i != E; ++i)
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Operands.push_back(Use(EPI.Operands[i], this));
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}
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void init(Value *Ptr, const std::vector<Value*> &Idx);
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void init(Value *Ptr, Value *Idx0, Value *Idx1);
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public:
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/// Constructors - Create a getelementptr instruction with a base pointer an
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/// list of indices. The first ctor can optionally insert before an existing
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/// instruction, the second appends the new instruction to the specified
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/// BasicBlock.
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GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
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const std::string &Name = "", Instruction *InsertBefore =0);
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GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
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const std::string &Name, BasicBlock *InsertAtEnd);
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/// Constructors - These two constructors are convenience methods because two
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/// index getelementptr instructions are so common.
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GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
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const std::string &Name = "", Instruction *InsertBefore =0);
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GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
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const std::string &Name, BasicBlock *InsertAtEnd);
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virtual GetElementPtrInst *clone() const;
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// getType - Overload to return most specific pointer type...
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inline const PointerType *getType() const {
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return reinterpret_cast<const PointerType*>(Instruction::getType());
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}
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/// getIndexedType - Returns the type of the element that would be loaded with
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/// a load instruction with the specified parameters.
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///
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/// A null type is returned if the indices are invalid for the specified
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/// pointer type.
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///
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static const Type *getIndexedType(const Type *Ptr,
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const std::vector<Value*> &Indices,
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bool AllowStructLeaf = false);
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static const Type *getIndexedType(const Type *Ptr, Value *Idx0, Value *Idx1,
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bool AllowStructLeaf = false);
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inline op_iterator idx_begin() { return op_begin()+1; }
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inline const_op_iterator idx_begin() const { return op_begin()+1; }
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inline op_iterator idx_end() { return op_end(); }
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inline const_op_iterator idx_end() const { return op_end(); }
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Value *getPointerOperand() {
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return getOperand(0);
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}
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const Value *getPointerOperand() const {
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return getOperand(0);
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}
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static unsigned getPointerOperandIndex() {
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return 0U; // get index for modifying correct operand
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}
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inline unsigned getNumIndices() const { // Note: always non-negative
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return getNumOperands() - 1;
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}
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inline bool hasIndices() const {
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return getNumOperands() > 1;
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const GetElementPtrInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::GetElementPtr);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// SetCondInst Class
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//===----------------------------------------------------------------------===//
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/// SetCondInst class - Represent a setCC operator, where CC is eq, ne, lt, gt,
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/// le, or ge.
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///
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class SetCondInst : public BinaryOperator {
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public:
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SetCondInst(BinaryOps Opcode, Value *LHS, Value *RHS,
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const std::string &Name = "", Instruction *InsertBefore = 0);
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SetCondInst(BinaryOps Opcode, Value *LHS, Value *RHS,
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const std::string &Name, BasicBlock *InsertAtEnd);
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/// getInverseCondition - Return the inverse of the current condition opcode.
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/// For example seteq -> setne, setgt -> setle, setlt -> setge, etc...
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///
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BinaryOps getInverseCondition() const {
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return getInverseCondition(getOpcode());
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}
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/// getInverseCondition - Static version that you can use without an
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/// instruction available.
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///
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static BinaryOps getInverseCondition(BinaryOps Opcode);
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/// getSwappedCondition - Return the condition opcode that would be the result
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/// of exchanging the two operands of the setcc instruction without changing
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/// the result produced. Thus, seteq->seteq, setle->setge, setlt->setgt, etc.
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///
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BinaryOps getSwappedCondition() const {
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return getSwappedCondition(getOpcode());
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}
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/// getSwappedCondition - Static version that you can use without an
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/// instruction available.
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///
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static BinaryOps getSwappedCondition(BinaryOps Opcode);
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const SetCondInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == SetEQ || I->getOpcode() == SetNE ||
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I->getOpcode() == SetLE || I->getOpcode() == SetGE ||
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I->getOpcode() == SetLT || I->getOpcode() == SetGT;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// CastInst Class
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//===----------------------------------------------------------------------===//
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/// CastInst - This class represents a cast from Operand[0] to the type of
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/// the instruction (i->getType()).
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///
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class CastInst : public Instruction {
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CastInst(const CastInst &CI) : Instruction(CI.getType(), Cast) {
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Operands.reserve(1);
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Operands.push_back(Use(CI.Operands[0], this));
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}
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void init(Value *S) {
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Operands.reserve(1);
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Operands.push_back(Use(S, this));
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}
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public:
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CastInst(Value *S, const Type *Ty, const std::string &Name = "",
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Instruction *InsertBefore = 0)
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: Instruction(Ty, Cast, Name, InsertBefore) {
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init(S);
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}
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CastInst(Value *S, const Type *Ty, const std::string &Name,
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BasicBlock *InsertAtEnd)
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: Instruction(Ty, Cast, Name, InsertAtEnd) {
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init(S);
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}
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virtual CastInst *clone() const;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const CastInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Cast;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// CallInst Class
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//===----------------------------------------------------------------------===//
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/// CallInst - This class represents a function call, abstracting a target
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/// machine's calling convention.
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///
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class CallInst : public Instruction {
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CallInst(const CallInst &CI);
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void init(Value *Func, const std::vector<Value*> &Params);
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void init(Value *Func, Value *Actual1, Value *Actual2);
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void init(Value *Func, Value *Actual);
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void init(Value *Func);
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public:
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CallInst(Value *F, const std::vector<Value*> &Par,
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const std::string &Name = "", Instruction *InsertBefore = 0);
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CallInst(Value *F, const std::vector<Value*> &Par,
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const std::string &Name, BasicBlock *InsertAtEnd);
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// Alternate CallInst ctors w/ two actuals, w/ one actual and no
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// actuals, respectively.
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CallInst(Value *F, Value *Actual1, Value *Actual2,
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const std::string& Name = "", Instruction *InsertBefore = 0);
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CallInst(Value *F, Value *Actual1, Value *Actual2,
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const std::string& Name, BasicBlock *InsertAtEnd);
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CallInst(Value *F, Value *Actual, const std::string& Name = "",
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Instruction *InsertBefore = 0);
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CallInst(Value *F, Value *Actual, const std::string& Name,
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BasicBlock *InsertAtEnd);
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explicit CallInst(Value *F, const std::string &Name = "",
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Instruction *InsertBefore = 0);
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explicit CallInst(Value *F, const std::string &Name,
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BasicBlock *InsertAtEnd);
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virtual CallInst *clone() const;
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bool mayWriteToMemory() const { return true; }
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/// getCalledFunction - Return the function being called by this instruction
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/// if it is a direct call. If it is a call through a function pointer,
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/// return null.
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Function *getCalledFunction() const {
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return dyn_cast<Function>(Operands[0]);
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}
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// getCalledValue - Get a pointer to a method that is invoked by this inst.
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inline const Value *getCalledValue() const { return Operands[0]; }
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inline Value *getCalledValue() { return Operands[0]; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const CallInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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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 {
|
|
ShiftInst(const ShiftInst &SI) : Instruction(SI.getType(), SI.getOpcode()) {
|
|
Operands.reserve(2);
|
|
Operands.push_back(Use(SI.Operands[0], this));
|
|
Operands.push_back(Use(SI.Operands[1], this));
|
|
}
|
|
void init(OtherOps Opcode, Value *S, Value *SA) {
|
|
assert((Opcode == Shl || Opcode == Shr) && "ShiftInst Opcode invalid!");
|
|
Operands.reserve(2);
|
|
Operands.push_back(Use(S, this));
|
|
Operands.push_back(Use(SA, this));
|
|
}
|
|
|
|
public:
|
|
ShiftInst(OtherOps Opcode, Value *S, Value *SA, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(S->getType(), Opcode, Name, InsertBefore) {
|
|
init(Opcode, S, SA);
|
|
}
|
|
ShiftInst(OtherOps Opcode, Value *S, Value *SA, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: Instruction(S->getType(), Opcode, Name, InsertAtEnd) {
|
|
init(Opcode, S, SA);
|
|
}
|
|
|
|
OtherOps getOpcode() const {
|
|
return static_cast<OtherOps>(Instruction::getOpcode());
|
|
}
|
|
|
|
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 {
|
|
SelectInst(const SelectInst &SI) : Instruction(SI.getType(), SI.getOpcode()) {
|
|
Operands.reserve(3);
|
|
Operands.push_back(Use(SI.Operands[0], this));
|
|
Operands.push_back(Use(SI.Operands[1], this));
|
|
Operands.push_back(Use(SI.Operands[2], this));
|
|
}
|
|
void init(Value *C, Value *S1, Value *S2) {
|
|
Operands.reserve(3);
|
|
Operands.push_back(Use(C, this));
|
|
Operands.push_back(Use(S1, this));
|
|
Operands.push_back(Use(S2, this));
|
|
}
|
|
|
|
public:
|
|
SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(S1->getType(), Instruction::Select, Name, InsertBefore) {
|
|
init(C, S1, S2);
|
|
}
|
|
SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: Instruction(S1->getType(), Instruction::Select, Name, InsertAtEnd) {
|
|
init(C, S1, S2);
|
|
}
|
|
|
|
Value *getCondition() const { return Operands[0]; }
|
|
Value *getTrueValue() const { return Operands[1]; }
|
|
Value *getFalseValue() const { return Operands[2]; }
|
|
|
|
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 Instruction {
|
|
PATypeHolder ArgTy;
|
|
void init(Value *List) {
|
|
Operands.reserve(1);
|
|
Operands.push_back(Use(List, this));
|
|
}
|
|
VANextInst(const VANextInst &VAN)
|
|
: Instruction(VAN.getType(), VANext), ArgTy(VAN.getArgType()) {
|
|
init(VAN.Operands[0]);
|
|
}
|
|
|
|
public:
|
|
VANextInst(Value *List, const Type *Ty, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(List->getType(), VANext, Name, InsertBefore), ArgTy(Ty) {
|
|
init(List);
|
|
}
|
|
VANextInst(Value *List, const Type *Ty, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: Instruction(List->getType(), VANext, Name, InsertAtEnd), ArgTy(Ty) {
|
|
init(List);
|
|
}
|
|
|
|
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 Instruction {
|
|
void init(Value* List) {
|
|
Operands.reserve(1);
|
|
Operands.push_back(Use(List, this));
|
|
}
|
|
VAArgInst(const VAArgInst &VAA)
|
|
: Instruction(VAA.getType(), VAArg) {
|
|
init(VAA.Operands[0]);
|
|
}
|
|
public:
|
|
VAArgInst(Value *List, const Type *Ty, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(Ty, VAArg, Name, InsertBefore) {
|
|
init(List);
|
|
}
|
|
VAArgInst(Value *List, const Type *Ty, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: Instruction(Ty, VAArg, Name, InsertAtEnd) {
|
|
init(List);
|
|
}
|
|
|
|
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 {
|
|
PHINode(const PHINode &PN);
|
|
public:
|
|
PHINode(const Type *Ty, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(Ty, Instruction::PHI, Name, InsertBefore) {
|
|
}
|
|
|
|
PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
|
|
: Instruction(Ty, Instruction::PHI, Name, InsertAtEnd) {
|
|
}
|
|
|
|
virtual PHINode *clone() const;
|
|
|
|
/// getNumIncomingValues - Return the number of incoming edges
|
|
///
|
|
unsigned getNumIncomingValues() const { return (unsigned)Operands.size()/2; }
|
|
|
|
/// getIncomingValue - Return incoming value #x
|
|
///
|
|
Value *getIncomingValue(unsigned i) const {
|
|
assert(i*2 < Operands.size() && "Invalid value number!");
|
|
return Operands[i*2];
|
|
}
|
|
void setIncomingValue(unsigned i, Value *V) {
|
|
assert(i*2 < Operands.size() && "Invalid value number!");
|
|
Operands[i*2] = V;
|
|
}
|
|
inline unsigned getOperandNumForIncomingValue(unsigned i) {
|
|
return i*2;
|
|
}
|
|
|
|
/// getIncomingBlock - Return incoming basic block #x
|
|
///
|
|
BasicBlock *getIncomingBlock(unsigned i) const {
|
|
assert(i*2+1 < Operands.size() && "Invalid value number!");
|
|
return reinterpret_cast<BasicBlock*>(Operands[i*2+1].get());
|
|
}
|
|
void setIncomingBlock(unsigned i, BasicBlock *BB) {
|
|
assert(i*2+1 < Operands.size() && "Invalid value number!");
|
|
Operands[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!");
|
|
Operands.push_back(Use(V, this));
|
|
Operands.push_back(Use(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 {
|
|
for (unsigned i = 0; i < Operands.size()/2; ++i)
|
|
if (getIncomingBlock(i) == BB) return i;
|
|
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));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ReturnInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// ReturnInst - Return a value (possibly void), from a function. Execution
|
|
/// does not continue in this function any longer.
|
|
///
|
|
class ReturnInst : public TerminatorInst {
|
|
ReturnInst(const ReturnInst &RI) : TerminatorInst(Instruction::Ret) {
|
|
if (RI.Operands.size()) {
|
|
assert(RI.Operands.size() == 1 && "Return insn can only have 1 operand!");
|
|
Operands.reserve(1);
|
|
Operands.push_back(Use(RI.Operands[0], 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, InsertBefore) {
|
|
init(RetVal);
|
|
}
|
|
ReturnInst(Value *RetVal, BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Ret, InsertAtEnd) {
|
|
init(RetVal);
|
|
}
|
|
ReturnInst(BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Ret, InsertAtEnd) {
|
|
}
|
|
|
|
virtual ReturnInst *clone() const;
|
|
|
|
inline const Value *getReturnValue() const {
|
|
return Operands.size() ? Operands[0].get() : 0;
|
|
}
|
|
inline Value *getReturnValue() {
|
|
return Operands.size() ? Operands[0].get() : 0;
|
|
}
|
|
|
|
virtual const BasicBlock *getSuccessor(unsigned idx) const {
|
|
assert(0 && "ReturnInst has no successors!");
|
|
abort();
|
|
return 0;
|
|
}
|
|
virtual void setSuccessor(unsigned idx, BasicBlock *NewSucc);
|
|
virtual 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));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// BranchInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// BranchInst - Conditional or Unconditional Branch instruction.
|
|
///
|
|
class BranchInst : public TerminatorInst {
|
|
BranchInst(const BranchInst &BI);
|
|
void init(BasicBlock *IfTrue);
|
|
void init(BasicBlock *True, BasicBlock *False, Value *Cond);
|
|
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, InsertBefore) {
|
|
init(IfTrue);
|
|
}
|
|
BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
|
|
Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Br, InsertBefore) {
|
|
init(IfTrue, IfFalse, Cond);
|
|
}
|
|
|
|
BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Br, InsertAtEnd) {
|
|
init(IfTrue);
|
|
}
|
|
|
|
BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
|
|
BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Br, InsertAtEnd) {
|
|
init(IfTrue, IfFalse, Cond);
|
|
}
|
|
|
|
virtual BranchInst *clone() const;
|
|
|
|
inline bool isUnconditional() const { return Operands.size() == 1; }
|
|
inline bool isConditional() const { return Operands.size() == 3; }
|
|
|
|
inline Value *getCondition() const {
|
|
assert(isConditional() && "Cannot get condition of an uncond branch!");
|
|
return Operands[2].get();
|
|
}
|
|
|
|
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.
|
|
//
|
|
void setUnconditionalDest(BasicBlock *Dest) {
|
|
if (isConditional()) Operands.erase(Operands.begin()+1, Operands.end());
|
|
Operands[0] = reinterpret_cast<Value*>(Dest);
|
|
}
|
|
|
|
virtual const BasicBlock *getSuccessor(unsigned i) const {
|
|
assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
|
|
return (i == 0) ? cast<BasicBlock>(Operands[0].get()) :
|
|
cast<BasicBlock>(Operands[1].get());
|
|
}
|
|
inline BasicBlock *getSuccessor(unsigned idx) {
|
|
const BranchInst *BI = this;
|
|
return const_cast<BasicBlock*>(BI->getSuccessor(idx));
|
|
}
|
|
|
|
virtual void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
|
|
Operands[idx] = reinterpret_cast<Value*>(NewSucc);
|
|
}
|
|
|
|
virtual unsigned getNumSuccessors() const { return 1+isConditional(); }
|
|
|
|
// 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));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SwitchInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// SwitchInst - Multiway switch
|
|
///
|
|
class SwitchInst : public TerminatorInst {
|
|
// 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);
|
|
|
|
public:
|
|
SwitchInst(Value *Value, BasicBlock *Default, Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Switch, InsertBefore) {
|
|
init(Value, Default);
|
|
}
|
|
SwitchInst(Value *Value, BasicBlock *Default, BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Switch, InsertAtEnd) {
|
|
init(Value, Default);
|
|
}
|
|
|
|
virtual SwitchInst *clone() const;
|
|
|
|
// Accessor Methods for Switch stmt
|
|
//
|
|
inline const Value *getCondition() const { return Operands[0]; }
|
|
inline Value *getCondition() { return Operands[0]; }
|
|
void setCondition(Value *V) { Operands[0] = V; }
|
|
|
|
inline const BasicBlock *getDefaultDest() const {
|
|
return cast<BasicBlock>(Operands[1].get());
|
|
}
|
|
inline BasicBlock *getDefaultDest() {
|
|
return cast<BasicBlock>(Operands[1].get());
|
|
}
|
|
|
|
/// getNumCases - return the number of 'cases' in this switch instruction.
|
|
/// Note that case #0 is always the default case.
|
|
unsigned getNumCases() const {
|
|
return (unsigned)Operands.size()/2;
|
|
}
|
|
|
|
/// getCaseValue - Return the specified case value. Note that case #0, the
|
|
/// default destination, does not have a case value.
|
|
Constant *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 Constant *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 Constant *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(Constant *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 const BasicBlock *getSuccessor(unsigned idx) const {
|
|
assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
|
|
return cast<BasicBlock>(Operands[idx*2+1].get());
|
|
}
|
|
inline BasicBlock *getSuccessor(unsigned idx) {
|
|
assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
|
|
return cast<BasicBlock>(Operands[idx*2+1].get());
|
|
}
|
|
|
|
virtual void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
|
|
Operands[idx*2+1] = reinterpret_cast<Value*>(NewSucc);
|
|
}
|
|
|
|
// getSuccessorValue - Return the value associated with the specified
|
|
// successor.
|
|
inline const Constant *getSuccessorValue(unsigned idx) const {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range!");
|
|
return cast<Constant>(Operands[idx*2].get());
|
|
}
|
|
inline Constant *getSuccessorValue(unsigned idx) {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range!");
|
|
return cast<Constant>(Operands[idx*2].get());
|
|
}
|
|
virtual unsigned getNumSuccessors() const { return (unsigned)Operands.size()/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));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// InvokeInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// InvokeInst - Invoke instruction
|
|
///
|
|
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);
|
|
|
|
virtual InvokeInst *clone() const;
|
|
|
|
bool mayWriteToMemory() const { return true; }
|
|
|
|
/// getCalledFunction - Return the function called, or null if this is an
|
|
/// indirect function invocation.
|
|
///
|
|
Function *getCalledFunction() const {
|
|
return dyn_cast<Function>(Operands[0]);
|
|
}
|
|
|
|
// getCalledValue - Get a pointer to a function that is invoked by this inst.
|
|
inline const Value *getCalledValue() const { return Operands[0]; }
|
|
inline Value *getCalledValue() { return Operands[0]; }
|
|
|
|
// get*Dest - Return the destination basic blocks...
|
|
inline const BasicBlock *getNormalDest() const {
|
|
return cast<BasicBlock>(Operands[1].get());
|
|
}
|
|
inline BasicBlock *getNormalDest() {
|
|
return cast<BasicBlock>(Operands[1].get());
|
|
}
|
|
inline const BasicBlock *getUnwindDest() const {
|
|
return cast<BasicBlock>(Operands[2].get());
|
|
}
|
|
inline BasicBlock *getUnwindDest() {
|
|
return cast<BasicBlock>(Operands[2].get());
|
|
}
|
|
|
|
inline void setNormalDest(BasicBlock *B){
|
|
Operands[1] = reinterpret_cast<Value*>(B);
|
|
}
|
|
|
|
inline void setUnwindDest(BasicBlock *B){
|
|
Operands[2] = reinterpret_cast<Value*>(B);
|
|
}
|
|
|
|
virtual const BasicBlock *getSuccessor(unsigned i) const {
|
|
assert(i < 2 && "Successor # out of range for invoke!");
|
|
return i == 0 ? getNormalDest() : getUnwindDest();
|
|
}
|
|
inline BasicBlock *getSuccessor(unsigned i) {
|
|
assert(i < 2 && "Successor # out of range for invoke!");
|
|
return i == 0 ? getNormalDest() : getUnwindDest();
|
|
}
|
|
|
|
virtual void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
|
|
assert(idx < 2 && "Successor # out of range for invoke!");
|
|
Operands[idx+1] = reinterpret_cast<Value*>(NewSucc);
|
|
}
|
|
|
|
virtual 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));
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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, InsertBefore) {
|
|
}
|
|
UnwindInst(BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Unwind, InsertAtEnd) {
|
|
}
|
|
|
|
virtual UnwindInst *clone() const;
|
|
|
|
virtual const BasicBlock *getSuccessor(unsigned idx) const {
|
|
assert(0 && "UnwindInst has no successors!");
|
|
abort();
|
|
return 0;
|
|
}
|
|
virtual void setSuccessor(unsigned idx, BasicBlock *NewSucc);
|
|
virtual 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));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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, InsertBefore) {
|
|
}
|
|
UnreachableInst(BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Unreachable, InsertAtEnd) {
|
|
}
|
|
|
|
virtual UnreachableInst *clone() const;
|
|
|
|
virtual const BasicBlock *getSuccessor(unsigned idx) const {
|
|
assert(0 && "UnreachableInst has no successors!");
|
|
abort();
|
|
return 0;
|
|
}
|
|
virtual void setSuccessor(unsigned idx, BasicBlock *NewSucc);
|
|
virtual 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));
|
|
}
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|