llvm-6502/include/llvm/iMemory.h
2003-11-11 22:41:34 +00:00

305 lines
11 KiB
C++

//===-- llvm/iMemory.h - Memory Operator node definitions -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declarations of all of the memory related operators.
// This includes: malloc, free, alloca, load, store, and getelementptr
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IMEMORY_H
#define LLVM_IMEMORY_H
#include "llvm/Instruction.h"
namespace llvm {
class PointerType;
//===----------------------------------------------------------------------===//
// AllocationInst Class
//===----------------------------------------------------------------------===//
//
// AllocationInst - This class is the common base class of MallocInst and
// AllocaInst.
//
class AllocationInst : public Instruction {
protected:
AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
const std::string &Name = "", Instruction *InsertBefore = 0);
public:
// isArrayAllocation - Return true if there is an allocation size parameter
// to the allocation instruction that is not 1.
//
bool isArrayAllocation() const;
// getArraySize - Get the number of element allocated, for a simple allocation
// of a single element, this will return a constant 1 value.
//
inline const Value *getArraySize() const { return Operands[0]; }
inline Value *getArraySize() { return Operands[0]; }
// getType - Overload to return most specific pointer type...
inline const PointerType *getType() const {
return (const PointerType*)Instruction::getType();
}
// getAllocatedType - Return the type that is being allocated by the
// instruction.
//
const Type *getAllocatedType() const;
virtual Instruction *clone() const = 0;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const AllocationInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Alloca ||
I->getOpcode() == Instruction::Malloc;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// MallocInst Class
//===----------------------------------------------------------------------===//
class MallocInst : public AllocationInst {
MallocInst(const MallocInst &MI);
public:
MallocInst(const Type *Ty, Value *ArraySize = 0, const std::string &Name = "",
Instruction *InsertBefore = 0)
: AllocationInst(Ty, ArraySize, Malloc, Name, InsertBefore) {}
virtual Instruction *clone() const {
return new MallocInst(*this);
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const MallocInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Malloc);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// AllocaInst Class
//===----------------------------------------------------------------------===//
class AllocaInst : public AllocationInst {
AllocaInst(const AllocaInst &);
public:
AllocaInst(const Type *Ty, Value *ArraySize = 0, const std::string &Name = "",
Instruction *InsertBefore = 0)
: AllocationInst(Ty, ArraySize, Alloca, Name, InsertBefore) {}
virtual Instruction *clone() const {
return new AllocaInst(*this);
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const AllocaInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Alloca);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// FreeInst Class
//===----------------------------------------------------------------------===//
struct FreeInst : public Instruction {
FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
virtual Instruction *clone() const { return new FreeInst(Operands[0]); }
virtual bool mayWriteToMemory() const { return true; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const FreeInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::Free);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// LoadInst Class
//===----------------------------------------------------------------------===//
class LoadInst : public Instruction {
LoadInst(const LoadInst &LI) : Instruction(LI.getType(), Load) {
Volatile = LI.isVolatile();
Operands.reserve(1);
Operands.push_back(Use(LI.Operands[0], this));
}
bool Volatile; // True if this is a volatile load
public:
LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
LoadInst(Value *Ptr, const std::string &Name = "", bool isVolatile = false,
Instruction *InsertBefore = 0);
/// isVolatile - Return true if this is a load from a volatile memory
/// location.
bool isVolatile() const { return Volatile; }
/// setVolatile - Specify whether this is a volatile load or not.
///
void setVolatile(bool V) { Volatile = V; }
virtual Instruction *clone() const { return new LoadInst(*this); }
virtual bool mayWriteToMemory() const { return isVolatile(); }
Value *getPointerOperand() { return getOperand(0); }
const Value *getPointerOperand() const { return getOperand(0); }
static unsigned getPointerOperandIndex() { return 0U; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const LoadInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Load;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// StoreInst Class
//===----------------------------------------------------------------------===//
class StoreInst : public Instruction {
StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store) {
Volatile = SI.isVolatile();
Operands.reserve(2);
Operands.push_back(Use(SI.Operands[0], this));
Operands.push_back(Use(SI.Operands[1], this));
}
bool Volatile; // True if this is a volatile store
public:
StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
Instruction *InsertBefore = 0);
/// isVolatile - Return true if this is a load from a volatile memory
/// location.
bool isVolatile() const { return Volatile; }
/// setVolatile - Specify whether this is a volatile load or not.
///
void setVolatile(bool V) { Volatile = V; }
virtual Instruction *clone() const { return new StoreInst(*this); }
virtual bool mayWriteToMemory() const { return true; }
Value *getPointerOperand() { return getOperand(1); }
const Value *getPointerOperand() const { return getOperand(1); }
static unsigned getPointerOperandIndex() { return 1U; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const StoreInst *) { return true; }
static inline bool classof(const Instruction *I) {
return I->getOpcode() == Instruction::Store;
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
//===----------------------------------------------------------------------===//
// GetElementPtrInst Class
//===----------------------------------------------------------------------===//
class GetElementPtrInst : public Instruction {
GetElementPtrInst(const GetElementPtrInst &EPI)
: Instruction((Type*)EPI.getType(), GetElementPtr) {
Operands.reserve(EPI.Operands.size());
for (unsigned i = 0, E = EPI.Operands.size(); i != E; ++i)
Operands.push_back(Use(EPI.Operands[i], this));
}
public:
GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
const std::string &Name = "", Instruction *InsertBefore =0);
virtual Instruction *clone() const { return new GetElementPtrInst(*this); }
// getType - Overload to return most specific pointer type...
inline const PointerType *getType() const {
return (PointerType*)Instruction::getType();
}
/// getIndexedType - Returns the type of the element that would be loaded with
/// a load instruction with the specified parameters.
///
/// A null type is returned if the indices are invalid for the specified
/// pointer type.
///
static const Type *getIndexedType(const Type *Ptr,
const std::vector<Value*> &Indices,
bool AllowStructLeaf = false);
inline op_iterator idx_begin() {
return op_begin()+1;
}
inline const_op_iterator idx_begin() const {
return op_begin()+1;
}
inline op_iterator idx_end() { return op_end(); }
inline const_op_iterator idx_end() const { return op_end(); }
Value *getPointerOperand() {
return getOperand(0);
}
const Value *getPointerOperand() const {
return getOperand(0);
}
static unsigned getPointerOperandIndex() {
return 0U; // get index for modifying correct operand
}
inline unsigned getNumIndices() const { // Note: always non-negative
return getNumOperands() - 1;
}
inline bool hasIndices() const {
return getNumOperands() > 1;
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const GetElementPtrInst *) { return true; }
static inline bool classof(const Instruction *I) {
return (I->getOpcode() == Instruction::GetElementPtr);
}
static inline bool classof(const Value *V) {
return isa<Instruction>(V) && classof(cast<Instruction>(V));
}
};
} // End llvm namespace
#endif // LLVM_IMEMORY_H