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//===-- llvm/Argument.h - Definition of the Argument class ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the Argument class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ARGUMENT_H
#define LLVM_ARGUMENT_H
#include "llvm/Value.h"
#include "llvm/Attributes.h"
#include "llvm/ADT/ilist_node.h"
namespace llvm {
template<typename ValueSubClass, typename ItemParentClass>
class SymbolTableListTraits;
/// A class to represent an incoming formal argument to a Function. An argument
/// is a very simple Value. It is essentially a named (optional) type. When used
/// in the body of a function, it represents the value of the actual argument
/// the function was called with.
/// @brief LLVM Argument representation
class Argument : public Value, public ilist_node<Argument> {
Function *Parent;
friend class SymbolTableListTraits<Argument, Function>;
void setParent(Function *parent);
public:
/// Argument ctor - If Function argument is specified, this argument is
/// inserted at the end of the argument list for the function.
///
explicit Argument(const Type *Ty, const Twine &Name = "", Function *F = 0);
inline const Function *getParent() const { return Parent; }
inline Function *getParent() { return Parent; }
/// getArgNo - Return the index of this formal argument in its containing
/// function. For example in "void foo(int a, float b)" a is 0 and b is 1.
unsigned getArgNo() const;
/// hasByValAttr - Return true if this argument has the byval attribute on it
/// in its containing function.
bool hasByValAttr() const;
/// hasNoAliasAttr - Return true if this argument has the noalias attribute on
/// it in its containing function.
bool hasNoAliasAttr() const;
/// hasNoCaptureAttr - Return true if this argument has the nocapture
/// attribute on it in its containing function.
bool hasNoCaptureAttr() const;
/// hasSRetAttr - Return true if this argument has the sret attribute on it in
/// its containing function.
bool hasStructRetAttr() const;
/// addAttr - Add a Attribute to an argument
void addAttr(Attributes);
/// removeAttr - Remove a Attribute from an argument
void removeAttr(Attributes);
/// classof - Methods for support type inquiry through isa, cast, and
/// dyn_cast:
///
static inline bool classof(const Argument *) { return true; }
static inline bool classof(const Value *V) {
return V->getValueID() == ArgumentVal;
}
};
} // End llvm namespace
#endif
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