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//===-- llvm/iOther.h - "Other" instruction node definitions -----*- C++ -*--=//
//
// This file contains the declarations for instructions that fall into the
// grandios 'other' catagory...
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IOTHER_H
#define LLVM_IOTHER_H
#include "llvm/InstrTypes.h"
#include "llvm/Method.h"
#include <vector>
//===----------------------------------------------------------------------===//
// 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.
//
// TODO: FIXME: This representation is not good enough. Consider the following
// code:
// BB0: %x = int %0
// BB1: %y = int %1
// BB2: %z = phi int %0, %1 - Can't tell where constants come from!
//
// TOFIX: Store pair<Use,BasicBlockUse> instead of just <Use>
//
class PHINode : public Instruction {
vector<Use> IncomingValues;
PHINode(const PHINode &PN);
public:
PHINode(const Type *Ty, const string &Name = "");
inline ~PHINode() { dropAllReferences(); }
virtual Instruction *clone() const { return new PHINode(*this); }
// Implement all of the functionality required by User...
//
virtual void dropAllReferences();
virtual const Value *getOperand(unsigned i) const {
return (i < IncomingValues.size()) ? IncomingValues[i] : 0;
}
inline Value *getOperand(unsigned i) {
return (Value*)((const PHINode*)this)->getOperand(i);
}
virtual unsigned getNumOperands() const { return IncomingValues.size(); }
virtual bool setOperand(unsigned i, Value *Val);
virtual string getOpcode() const { return "phi"; }
// addIncoming - Add an incoming value to the end of the PHI list
void addIncoming(Value *D);
// removeIncomingValue - Remove an incoming value. This is useful if a
// predecessor basic block is deleted. The value removed is returned.
Value *removeIncomingValue(unsigned idx);
};
//===----------------------------------------------------------------------===//
// MethodArgument Class
//===----------------------------------------------------------------------===//
class MethodArgument : public Value { // Defined in the InstrType.cpp file
Method *Parent;
friend class ValueHolder<MethodArgument,Method>;
inline void setParent(Method *parent) { Parent = parent; }
public:
MethodArgument(const Type *Ty, const string &Name = "")
: Value(Ty, Value::MethodArgumentVal, Name) {
Parent = 0;
}
// Specialize setName to handle symbol table majik...
virtual void setName(const string &name);
inline const Method *getParent() const { return Parent; }
inline Method *getParent() { return Parent; }
};
//===----------------------------------------------------------------------===//
// Classes to function calls and method invocations
//===----------------------------------------------------------------------===//
class CallInst : public Instruction {
MethodUse M;
vector<Use> Params;
CallInst(const CallInst &CI);
public:
CallInst(Method *M, vector<Value*> ¶ms, const string &Name = "");
inline ~CallInst() { dropAllReferences(); }
virtual string getOpcode() const { return "call"; }
virtual Instruction *clone() const { return new CallInst(*this); }
bool hasSideEffects() const { return true; }
const Method *getCalledMethod() const { return M; }
Method *getCalledMethod() { return M; }
// Implement all of the functionality required by Instruction...
//
virtual void dropAllReferences();
virtual const Value *getOperand(unsigned i) const {
return i == 0 ? M : ((i <= Params.size()) ? Params[i-1] : 0);
}
inline Value *getOperand(unsigned i) {
return (Value*)((const CallInst*)this)->getOperand(i);
}
virtual unsigned getNumOperands() const { return Params.size()+1; }
virtual bool setOperand(unsigned i, Value *Val);
};
#endif
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