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//===-- llvm/iMemory.h - Memory Operator node definitions --------*- C++ -*--=//
//
// This file contains the declarations of all of the memory related operators.
// This includes: malloc, free, alloca, load, store, getfield, putfield
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IMEMORY_H
#define LLVM_IMEMORY_H
#include "llvm/Instruction.h"
#include "llvm/DerivedTypes.h"
#include "llvm/ConstPoolVals.h"
class ConstPoolType;
class AllocationInst : public Instruction {
protected:
UseTy<ConstPoolType> TyVal;
Use ArraySize;
public:
AllocationInst(ConstPoolType *tyVal, Value *arrSize, unsigned iTy,
const string &Name = "")
: Instruction(tyVal->getValue(), iTy, Name),
TyVal(tyVal, this), ArraySize(arrSize, this) {
// Make sure they didn't try to specify a size for an invalid type...
assert(arrSize == 0 ||
(getType()->getValueType()->isArrayType() &&
((const ArrayType*)getType()->getValueType())->isUnsized()) &&
"Trying to allocate something other than unsized array, with size!");
// Make sure that if a size is specified, that it is a uint!
assert(arrSize == 0 || arrSize->getType() == Type::UIntTy &&
"Malloc SIZE is not a 'uint'!");
}
inline ~AllocationInst() {}
// getType - Overload to return most specific pointer type...
inline const PointerType *getType() const {
return (const PointerType*)Instruction::getType();
}
virtual Instruction *clone() const = 0;
inline virtual void dropAllReferences() { TyVal = 0; ArraySize = 0; }
virtual bool setOperand(unsigned i, Value *Val) {
if (i == 0) {
assert(!Val || Val->getValueType() == Value::ConstantVal);
TyVal = (ConstPoolType*)Val;
return true;
} else if (i == 1) {
// Make sure they didn't try to specify a size for an invalid type...
assert(Val == 0 ||
(getType()->getValueType()->isArrayType() &&
((const ArrayType*)getType()->getValueType())->isUnsized()) &&
"Trying to allocate something other than unsized array, with size!");
// Make sure that if a size is specified, that it is a uint!
assert(Val == 0 || Val->getType() == Type::UIntTy &&
"Malloc SIZE is not a 'uint'!");
ArraySize = Val;
return true;
}
return false;
}
virtual unsigned getNumOperands() const { return 2; }
virtual const Value *getOperand(unsigned i) const {
return i == 0 ? TyVal : (i == 1 ? ArraySize : 0);
}
};
class MallocInst : public AllocationInst {
public:
MallocInst(ConstPoolType *tyVal, Value *ArraySize = 0,
const string &Name = "")
: AllocationInst(tyVal, ArraySize, Instruction::Malloc, Name) {}
inline ~MallocInst() {}
virtual Instruction *clone() const {
return new MallocInst(TyVal, ArraySize);
}
virtual string getOpcode() const { return "malloc"; }
};
class AllocaInst : public AllocationInst {
public:
AllocaInst(ConstPoolType *tyVal, Value *ArraySize = 0,
const string &Name = "")
: AllocationInst(tyVal, ArraySize, Instruction::Alloca, Name) {}
inline ~AllocaInst() {}
virtual Instruction *clone() const {
return new AllocaInst(TyVal, ArraySize);
}
virtual string getOpcode() const { return "alloca"; }
};
class FreeInst : public Instruction {
protected:
Use Pointer;
public:
FreeInst(Value *Ptr, const string &Name = "")
: Instruction(Type::VoidTy, Instruction::Free, Name),
Pointer(Ptr, this) {
assert(Ptr->getType()->isPointerType() && "Can't free nonpointer!");
}
inline ~FreeInst() {}
virtual Instruction *clone() const { return new FreeInst(Pointer); }
inline virtual void dropAllReferences() { Pointer = 0; }
virtual bool setOperand(unsigned i, Value *Val) {
if (i == 0) {
assert(!Val || Val->getType()->isPointerType() &&
"Can't free nonpointer!");
Pointer = Val;
return true;
}
return false;
}
virtual unsigned getNumOperands() const { return 1; }
virtual const Value *getOperand(unsigned i) const {
return i == 0 ? Pointer : 0;
}
virtual string getOpcode() const { return "free"; }
};
#endif // LLVM_IMEMORY_H
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