1 //===-- llvm/iMemory.h - Memory Operator node definitions --------*- C++ -*--=//
3 // This file contains the declarations of all of the memory related operators.
4 // This includes: malloc, free, alloca, load, store, getfield, putfield
6 //===----------------------------------------------------------------------===//
11 #include "llvm/Instruction.h"
14 //===----------------------------------------------------------------------===//
15 // AllocationInst Class
16 //===----------------------------------------------------------------------===//
18 // AllocationInst - This class is the common base class of MallocInst and
21 class AllocationInst : public Instruction {
23 AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
24 const std::string &Name = "");
27 // isArrayAllocation - Return true if there is an allocation size parameter
28 // to the allocation instruction that is not 1.
30 bool isArrayAllocation() const;
32 // getArraySize - Get the number of element allocated, for a simple allocation
33 // of a single element, this will return a constant 1 value.
35 inline const Value *getArraySize() const { return Operands[0]; }
36 inline Value *getArraySize() { return Operands[0]; }
38 // getType - Overload to return most specific pointer type...
39 inline const PointerType *getType() const {
40 return (const PointerType*)Instruction::getType();
43 // getAllocatedType - Return the type that is being allocated by the
46 const Type *getAllocatedType() const;
48 virtual Instruction *clone() const = 0;
50 // Methods for support type inquiry through isa, cast, and dyn_cast:
51 static inline bool classof(const AllocationInst *) { return true; }
52 static inline bool classof(const Instruction *I) {
53 return I->getOpcode() == Instruction::Alloca ||
54 I->getOpcode() == Instruction::Malloc;
56 static inline bool classof(const Value *V) {
57 return isa<Instruction>(V) && classof(cast<Instruction>(V));
62 //===----------------------------------------------------------------------===//
64 //===----------------------------------------------------------------------===//
66 struct MallocInst : public AllocationInst {
67 MallocInst(const Type *Ty, Value *ArraySize = 0, const std::string &Name = "")
68 : AllocationInst(Ty, ArraySize, Malloc, Name) {}
70 virtual Instruction *clone() const {
71 return new MallocInst((Type*)getType(), (Value*)Operands[0].get());
74 // Methods for support type inquiry through isa, cast, and dyn_cast:
75 static inline bool classof(const MallocInst *) { return true; }
76 static inline bool classof(const Instruction *I) {
77 return (I->getOpcode() == Instruction::Malloc);
79 static inline bool classof(const Value *V) {
80 return isa<Instruction>(V) && classof(cast<Instruction>(V));
85 //===----------------------------------------------------------------------===//
87 //===----------------------------------------------------------------------===//
89 struct AllocaInst : public AllocationInst {
90 AllocaInst(const Type *Ty, Value *ArraySize = 0, const std::string &Name = "")
91 : AllocationInst(Ty, ArraySize, Alloca, Name) {}
93 virtual Instruction *clone() const {
94 return new AllocaInst((Type*)getType(), (Value*)Operands[0].get());
97 // Methods for support type inquiry through isa, cast, and dyn_cast:
98 static inline bool classof(const AllocaInst *) { return true; }
99 static inline bool classof(const Instruction *I) {
100 return (I->getOpcode() == Instruction::Alloca);
102 static inline bool classof(const Value *V) {
103 return isa<Instruction>(V) && classof(cast<Instruction>(V));
108 //===----------------------------------------------------------------------===//
110 //===----------------------------------------------------------------------===//
112 struct FreeInst : public Instruction {
113 FreeInst(Value *Ptr);
115 virtual Instruction *clone() const { return new FreeInst(Operands[0]); }
117 virtual bool hasSideEffects() const { return true; }
119 // Methods for support type inquiry through isa, cast, and dyn_cast:
120 static inline bool classof(const FreeInst *) { return true; }
121 static inline bool classof(const Instruction *I) {
122 return (I->getOpcode() == Instruction::Free);
124 static inline bool classof(const Value *V) {
125 return isa<Instruction>(V) && classof(cast<Instruction>(V));
130 //===----------------------------------------------------------------------===//
131 // MemAccessInst Class
132 //===----------------------------------------------------------------------===//
134 // MemAccessInst - Common base class of GetElementPtrInst...
136 class MemAccessInst : public Instruction {
138 inline MemAccessInst(const Type *Ty, unsigned Opcode,
139 const std::string &Nam = "")
140 : Instruction(Ty, Opcode, Nam) {}
142 // getIndexedType - Returns the type of the element that would be loaded with
143 // a load instruction with the specified parameters.
145 // A null type is returned if the indices are invalid for the specified
148 static const Type *getIndexedType(const Type *Ptr,
149 const std::vector<Value*> &Indices,
150 bool AllowStructLeaf = false);
152 inline op_iterator idx_begin() {
153 return op_begin()+getFirstIndexOperandNumber();
155 inline const_op_iterator idx_begin() const {
156 return op_begin()+getFirstIndexOperandNumber();
158 inline op_iterator idx_end() { return op_end(); }
159 inline const_op_iterator idx_end() const { return op_end(); }
162 std::vector<Value*> copyIndices() const {
163 return std::vector<Value*>(idx_begin(), idx_end());
166 Value *getPointerOperand() {
167 return getOperand(getFirstIndexOperandNumber()-1);
169 const Value *getPointerOperand() const {
170 return getOperand(getFirstIndexOperandNumber()-1);
173 virtual unsigned getFirstIndexOperandNumber() const = 0;
175 inline unsigned getNumIndices() const { // Note: always non-negative
176 return (getNumOperands() - getFirstIndexOperandNumber());
179 inline bool hasIndices() const {
180 return getNumIndices() > 0;
183 // Methods for support type inquiry through isa, cast, and dyn_cast:
184 static inline bool classof(const MemAccessInst *) { return true; }
185 static inline bool classof(const Instruction *I) {
186 return I->getOpcode() == GetElementPtr;
188 static inline bool classof(const Value *V) {
189 return isa<Instruction>(V) && classof(cast<Instruction>(V));
194 //===----------------------------------------------------------------------===//
196 //===----------------------------------------------------------------------===//
198 class LoadInst : public Instruction {
199 LoadInst(const LoadInst &LI) : Instruction(LI.getType(), Load) {
201 Operands.push_back(Use(LI.Operands[0], this));
204 LoadInst(Value *Ptr, const std::string &Name = "");
206 virtual Instruction *clone() const { return new LoadInst(*this); }
208 Value *getPointerOperand() { return getOperand(0); }
209 const Value *getPointerOperand() const { return getOperand(0); }
211 // Methods for support type inquiry through isa, cast, and dyn_cast:
212 static inline bool classof(const LoadInst *) { return true; }
213 static inline bool classof(const Instruction *I) {
214 return (I->getOpcode() == Instruction::Load);
216 static inline bool classof(const Value *V) {
217 return isa<Instruction>(V) && classof(cast<Instruction>(V));
222 //===----------------------------------------------------------------------===//
224 //===----------------------------------------------------------------------===//
226 class StoreInst : public Instruction {
227 StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store) {
229 Operands.push_back(Use(SI.Operands[0], this));
230 Operands.push_back(Use(SI.Operands[1], this));
233 StoreInst(Value *Val, Value *Ptr);
234 virtual Instruction *clone() const { return new StoreInst(*this); }
236 virtual bool hasSideEffects() const { return true; }
238 Value *getPointerOperand() { return getOperand(1); }
239 const Value *getPointerOperand() const { return getOperand(1); }
241 // Methods for support type inquiry through isa, cast, and dyn_cast:
242 static inline bool classof(const StoreInst *) { return true; }
243 static inline bool classof(const Instruction *I) {
244 return (I->getOpcode() == Instruction::Store);
246 static inline bool classof(const Value *V) {
247 return isa<Instruction>(V) && classof(cast<Instruction>(V));
252 //===----------------------------------------------------------------------===//
253 // GetElementPtrInst Class
254 //===----------------------------------------------------------------------===//
256 class GetElementPtrInst : public MemAccessInst {
257 GetElementPtrInst(const GetElementPtrInst &EPI)
258 : MemAccessInst((Type*)EPI.getType(), GetElementPtr) {
259 Operands.reserve(EPI.Operands.size());
260 for (unsigned i = 0, E = EPI.Operands.size(); i != E; ++i)
261 Operands.push_back(Use(EPI.Operands[i], this));
264 GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
265 const std::string &Name = "");
266 virtual Instruction *clone() const { return new GetElementPtrInst(*this); }
267 virtual unsigned getFirstIndexOperandNumber() const { return 1; }
269 // getType - Overload to return most specific pointer type...
270 inline const PointerType *getType() const {
271 return (PointerType*)Instruction::getType();
274 // Methods for support type inquiry through isa, cast, and dyn_cast:
275 static inline bool classof(const GetElementPtrInst *) { return true; }
276 static inline bool classof(const Instruction *I) {
277 return (I->getOpcode() == Instruction::GetElementPtr);
279 static inline bool classof(const Value *V) {
280 return isa<Instruction>(V) && classof(cast<Instruction>(V));
284 #endif // LLVM_IMEMORY_H