X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FArgument.h;h=23d1a083482499ccbb064abc3778282e94ac4260;hb=fc82fabe00b0b820e3c0d7fc9e289bace0295f11;hp=6c2458d9d08138f97c5ac172aa0202c494309ce6;hpb=18961504fc2b299578dba817900a0696cf3ccc4d;p=oota-llvm.git

diff --git a/include/llvm/Argument.h b/include/llvm/Argument.h
index 6c2458d9d08..23d1a083482 100644
--- a/include/llvm/Argument.h
+++ b/include/llvm/Argument.h
@@ -1,7 +1,13 @@
-//===-- llvm/Argument.h - Definition of the Argument class -------*- C++ -*--=//
+//===-- llvm/Argument.h - Definition of the Argument class ------*- C++ -*-===//
 //
-// This file defines the Argument class, which represents and incoming formal
-// argument to a function.
+//                     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. 
 //
 //===----------------------------------------------------------------------===//
 
@@ -10,40 +16,72 @@
 
 #include "llvm/Value.h"
 
-class Argument : public Value {  // Defined in the InstrType.cpp file
+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 {  // Defined in the Function.cpp file
   Function *Parent;
 
   Argument *Prev, *Next; // Next and Prev links for our intrusive linked list
   void setNext(Argument *N) { Next = N; }
   void setPrev(Argument *N) { Prev = N; }
-  friend class SymbolTableListTraits<Argument, Function, Function>;
-  inline void setParent(Function *parent) { Parent = parent; }
+  friend class SymbolTableListTraits<Argument, Function>;
+  void setParent(Function *parent);
 
 public:
-  Argument(const Type *Ty, const std::string &Name = "") 
-    : Value(Ty, Value::ArgumentVal, Name) {
-    Parent = 0;
-  }
-
-  // Specialize setName to handle symbol table majik...
-  virtual void setName(const std::string &name, SymbolTable *ST = 0);
+  /// 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 std::string &Name = "",
+                    Function *F = 0);
 
   inline const Function *getParent() const { return Parent; }
   inline       Function *getParent()       { return Parent; }
- 
-  // getNext/Prev - Return the next or previous argument in the list.
-        Argument *getNext()       { return Next; }
-  const Argument *getNext() const { return Next; }
-        Argument *getPrev()       { return Prev; }
-  const Argument *getPrev() const { return Prev; }
 
+  /// 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;
+  
+  /// hasSRetAttr - Return true if this argument has the sret attribute on it in
+  /// its containing function.
+  bool hasStructRetAttr() const;
+  
   virtual void print(std::ostream &OS) const;
+  void print(std::ostream *OS) const {
+    if (OS) print(*OS);
+  }
 
-  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  /// 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->getValueType() == ArgumentVal;
+    return V->getValueID() == ArgumentVal;
   }
+  
+private:
+  // getNext/Prev - Return the next or previous argument in the list.
+  Argument *getNext()       { return Next; }
+  const Argument *getNext() const { return Next; }
+  Argument *getPrev()       { return Prev; }
+  const Argument *getPrev() const { return Prev; }
 };
 
+} // End llvm namespace
+
 #endif