Remove trailing whitespace

[oota-llvm.git] / include / llvm / Constant.h

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
index e6f63b12921b9d6438f91bad7032711ae7dad1e6..b8ec03b3ec4ab57b044b8dc7599caef42867fd2c 100644 (file)
--- a/include/llvm/Constant.h
+++ b/include/llvm/Constant.h
@@ -1,4 +1,11 @@
-//===-- llvm/Constant.h - Constant class definition --------------*- C++ -*--=//
+//===-- llvm/Constant.h - Constant class definition -------------*- 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 declaration of the Constant class.
 //
@@ -9,16 +16,16 @@
 
 #include "llvm/User.h"
 
+namespace llvm {
+
 class Constant : public User {
 protected:
-  inline Constant(const Type *Ty) : User(Ty, Value::ConstantVal) {}
-  ~Constant() {}
+  Constant(const Type *Ty, ValueTy vty, Use *Ops, unsigned NumOps,
+           const std::string& Name = "")
+    : User(Ty, vty, Ops, NumOps, Name) {}
 
   void destroyConstantImpl();
 public:
-  // setName - Specialize setName to handle symbol table majik...
-  virtual void setName(const std::string &name, SymbolTable *ST = 0);
-
   /// Static constructor to get a '0' constant of arbitrary type...
   ///
   static Constant *getNullValue(const Type *Ty);
@@ -29,10 +36,17 @@ public:
 
   virtual void print(std::ostream &O) const;
 
-  /// isConstantExpr - Return true if this is a ConstantExpr
-  ///
-  virtual bool isConstantExpr() const { return false; }
-
+  // Specialize get/setOperand for Constant's as their operands are always
+  // constants as well.
+  Constant *getOperand(unsigned i) {
+    return static_cast<Constant*>(User::getOperand(i));
+  }
+  const Constant *getOperand(unsigned i) const {
+    return static_cast<const Constant*>(User::getOperand(i));
+  }
+  void setOperand(unsigned i, Constant *C) {
+    User::setOperand(i, C);
+  }
 
   /// destroyConstant - Called if some element of this constant is no longer
   /// valid.  At this point only other constants may be on the use_list for this
@@ -41,20 +55,18 @@ public:
   /// available cached constants.  Implementations should call
   /// destroyConstantImpl as the last thing they do, to destroy all users and
   /// delete this.
-  ///
-  /// Note that this call is only valid on non-primitive constants: You cannot
-  /// destroy an integer constant for example.  This API is used to delete
-  /// constants that have ConstantPointerRef's embeded in them when the module
-  /// is deleted, and it is used by GlobalDCE to remove ConstantPointerRefs that
-  /// are unneeded, allowing globals to be DCE'd.
-  ///
   virtual void destroyConstant() { assert(0 && "Not reached!"); }
 
-  
   //// Methods for support type inquiry through isa, cast, and dyn_cast:
   static inline bool classof(const Constant *) { return true; }
+  static inline bool classof(const GlobalValue *) { return true; }
   static inline bool classof(const Value *V) {
-    return V->getValueType() == Value::ConstantVal;
+    return V->getValueType() == Value::SimpleConstantVal ||
+           V->getValueType() == Value::ConstantExprVal ||
+           V->getValueType() == Value::ConstantAggregateZeroVal ||
+           V->getValueType() == Value::FunctionVal ||
+           V->getValueType() == Value::GlobalVariableVal ||
+           V->getValueType() == Value::UndefValueVal;
   }
 
   /// replaceUsesOfWithOnConstant - This method is a special form of
@@ -77,11 +89,12 @@ public:
     assert(0 && "Constants that do not have operands cannot be using 'From'!");
   }
 
-  // WARNING: Only to be used by Bytecode & Assembly Parsers!  USER CODE SHOULD
-  // NOT USE THIS!!
-  // Returns the number of uses of OldV that were replaced.
-  unsigned mutateReferences(Value* OldV, Value *NewV);
-  // END WARNING!!
+  /// clearAllValueMaps - This method frees all internal memory used by the
+  /// constant subsystem, which can be used in environments where this memory
+  /// is otherwise reported as a leak.
+  static void clearAllValueMaps();
 };
 
+} // End llvm namespace
+
 #endif