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308 lines
11 KiB
C++
308 lines
11 KiB
C++
//===-- llvm/iMemory.h - Memory Operator node definitions --------*- C++ -*--=//
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//
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// This file contains the declarations of all of the memory related operators.
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// This includes: malloc, free, alloca, load, store, getfield, putfield
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IMEMORY_H
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#define LLVM_IMEMORY_H
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#include "llvm/Instruction.h"
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#include "llvm/DerivedTypes.h"
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//===----------------------------------------------------------------------===//
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// AllocationInst Class
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//===----------------------------------------------------------------------===//
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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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public:
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AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
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const string &Name = "")
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: Instruction(Ty, iTy, Name) {
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assert(Ty->isPointerType() && "Can't allocate a non pointer type!");
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if (ArraySize) {
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assert(ArraySize->getType() == Type::UIntTy &&
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"Malloc/Allocation array size != UIntTy!");
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Operands.reserve(1);
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Operands.push_back(Use(ArraySize, this));
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}
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}
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// isArrayAllocation - Return true if there is an allocation size parameter
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// to the allocation instruction.
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//
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inline bool isArrayAllocation() const { return Operands.size() == 1; }
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inline const Value *getArraySize() const {
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assert(isArrayAllocation()); return Operands[0];
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}
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inline Value *getArraySize() {
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assert(isArrayAllocation()); return Operands[0];
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}
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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 (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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inline const Type *getAllocatedType() const {
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return getType()->getElementType();
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}
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virtual Instruction *clone() const = 0;
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};
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//===----------------------------------------------------------------------===//
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// MallocInst Class
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//===----------------------------------------------------------------------===//
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class MallocInst : public AllocationInst {
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public:
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MallocInst(const Type *Ty, Value *ArraySize = 0, const string &Name = "")
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: AllocationInst(Ty, ArraySize, Malloc, Name) {}
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virtual Instruction *clone() const {
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return new MallocInst(getType(),
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Operands.size() ? (Value*)Operands[0].get() : 0);
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}
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virtual const char *getOpcodeName() const { return "malloc"; }
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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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class AllocaInst : public AllocationInst {
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public:
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AllocaInst(const Type *Ty, Value *ArraySize = 0, const string &Name = "")
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: AllocationInst(Ty, ArraySize, Alloca, Name) {}
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virtual Instruction *clone() const {
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return new AllocaInst(getType(),
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Operands.size() ? (Value*)Operands[0].get() : 0);
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}
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virtual const char *getOpcodeName() const { return "alloca"; }
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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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class FreeInst : public Instruction {
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public:
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FreeInst(Value *Ptr) : Instruction(Type::VoidTy, Free, "") {
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assert(Ptr->getType()->isPointerType() && "Can't free nonpointer!");
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Operands.reserve(1);
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Operands.push_back(Use(Ptr, this));
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}
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virtual Instruction *clone() const { return new FreeInst(Operands[0]); }
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virtual const char *getOpcodeName() const { return "free"; }
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virtual bool hasSideEffects() 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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// MemAccessInst Class
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//===----------------------------------------------------------------------===//
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//
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// MemAccessInst - Common base class of LoadInst, StoreInst, and
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// GetElementPtrInst...
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//
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class MemAccessInst : public Instruction {
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protected:
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inline MemAccessInst(const Type *Ty, unsigned Opcode,
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const string &Nam = "")
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: Instruction(Ty, Opcode, Nam) {}
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public:
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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 vector<Value*> &Indices,
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bool AllowStructLeaf = false);
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inline op_iterator idx_begin() {
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return op_begin()+getFirstIndexOperandNumber();
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}
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inline const_op_iterator idx_begin() const {
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return op_begin()+getFirstIndexOperandNumber();
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}
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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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vector<Value*> copyIndices() const {
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return vector<Value*>(idx_begin(), idx_end());
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}
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Value *getPointerOperand() {
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return getOperand(getFirstIndexOperandNumber()-1);
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}
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const Value *getPointerOperand() const {
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return getOperand(getFirstIndexOperandNumber()-1);
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}
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virtual unsigned getFirstIndexOperandNumber() const = 0;
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inline bool hasIndices() const {
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return getNumOperands() > getFirstIndexOperandNumber();
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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 MemAccessInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Load || I->getOpcode() == Store ||
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I->getOpcode() == 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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// LoadInst Class
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//===----------------------------------------------------------------------===//
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class LoadInst : public MemAccessInst {
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LoadInst(const LoadInst &LI) : MemAccessInst(LI.getType(), Load) {
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Operands.reserve(LI.Operands.size());
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for (unsigned i = 0, E = LI.Operands.size(); i != E; ++i)
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Operands.push_back(Use(LI.Operands[i], this));
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}
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public:
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LoadInst(Value *Ptr, const vector<Value*> &Idx, const string &Name = "");
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LoadInst(Value *Ptr, const string &Name = "");
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virtual Instruction *clone() const { return new LoadInst(*this); }
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virtual const char *getOpcodeName() const { return "load"; }
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virtual unsigned getFirstIndexOperandNumber() const { return 1; }
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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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class StoreInst : public MemAccessInst {
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StoreInst(const StoreInst &SI) : MemAccessInst(SI.getType(), Store) {
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Operands.reserve(SI.Operands.size());
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for (unsigned i = 0, E = SI.Operands.size(); i != E; ++i)
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Operands.push_back(Use(SI.Operands[i], this));
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}
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public:
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StoreInst(Value *Val, Value *Ptr, const vector<Value*> &Idx,
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const string &Name = "");
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StoreInst(Value *Val, Value *Ptr, const string &Name = "");
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virtual Instruction *clone() const { return new StoreInst(*this); }
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virtual const char *getOpcodeName() const { return "store"; }
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virtual bool hasSideEffects() const { return true; }
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virtual unsigned getFirstIndexOperandNumber() const { return 2; }
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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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class GetElementPtrInst : public MemAccessInst {
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GetElementPtrInst(const GetElementPtrInst &EPI)
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: MemAccessInst(EPI.getType(), GetElementPtr) {
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Operands.reserve(EPI.Operands.size());
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for (unsigned i = 0, E = 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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public:
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GetElementPtrInst(Value *Ptr, const vector<Value*> &Idx,
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const string &Name = "");
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virtual Instruction *clone() const { return new GetElementPtrInst(*this); }
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virtual const char *getOpcodeName() const { return "getelementptr"; }
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virtual unsigned getFirstIndexOperandNumber() const { return 1; }
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inline bool isArraySelector() const { return !isStructSelector(); }
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bool isStructSelector() 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 cast<const PointerType>(Instruction::getType());
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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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#endif // LLVM_IMEMORY_H
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