The TargetData is not used for the isPowerOfTwo determination. It has never

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

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
index 601b37bb64e4df165db1a12111b1d1d953de845f..b3cb449da190c9f5bec67f3d1b55b16db5984d49 100644 (file)
--- a/include/llvm/Constant.h
+++ b/include/llvm/Constant.h
@@ -39,8 +39,9 @@ namespace llvm {
 /// don't have to worry about the lifetime of the objects.
 /// @brief LLVM Constant Representation
 class Constant : public User {
-  void operator=(const Constant &);     // Do not implement
-  Constant(const Constant &);           // Do not implement
+  void operator=(const Constant &) LLVM_DELETED_FUNCTION;
+  Constant(const Constant &) LLVM_DELETED_FUNCTION;
+  virtual void anchor();
   
 protected:
   Constant(Type *ty, ValueTy vty, Use *Ops, unsigned NumOps)
@@ -52,6 +53,10 @@ public:
   /// getNullValue.
   bool isNullValue() const;
 
+  /// isAllOnesValue - Return true if this is the value that would be returned by
+  /// getAllOnesValue.
+  bool isAllOnesValue() const;
+
   /// isNegativeZeroValue - Return true if the value is what would be returned 
   /// by getZeroValueForNegation.
   bool isNegativeZeroValue() const;
@@ -60,6 +65,9 @@ public:
   /// true for things like constant expressions that could divide by zero.
   bool canTrap() const;
 
+  /// isThreadDependent - Return true if the value can vary between threads.
+  bool isThreadDependent() const;
+
   /// isConstantUsed - Return true if the constant has users other than constant
   /// exprs and other dangling things.
   bool isConstantUsed() const;
@@ -86,11 +94,20 @@ public:
   /// FIXME: This really should not be in VMCore.
   PossibleRelocationsTy getRelocationInfo() const;
   
-  /// getVectorElements - This method, which is only valid on constant of vector
-  /// type, returns the elements of the vector in the specified smallvector.
-  /// This handles breaking down a vector undef into undef elements, etc.  For
-  /// constant exprs and other cases we can't handle, we return an empty vector.
-  void getVectorElements(SmallVectorImpl<Constant*> &Elts) const;
+  /// getAggregateElement - For aggregates (struct/array/vector) return the
+  /// constant that corresponds to the specified element if possible, or null if
+  /// not.  This can return null if the element index is a ConstantExpr, or if
+  /// 'this' is a constant expr.
+  Constant *getAggregateElement(unsigned Elt) const;
+  Constant *getAggregateElement(Constant *Elt) const;
+
+  /// getSplatValue - If this is a splat vector constant, meaning that all of
+  /// the elements have the same value, return that value. Otherwise return 0.
+  Constant *getSplatValue() const;
+
+  /// If C is a constant integer then return its value, otherwise C must be a
+  /// vector of constant integers, all equal, and the common value is returned.
+  const APInt &getUniqueInteger() const;
 
   /// 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
@@ -99,11 +116,9 @@ public:
   /// available cached constants.  Implementations should call
   /// destroyConstantImpl as the last thing they do, to destroy all users and
   /// delete this.
-  virtual void destroyConstant() { assert(0 && "Not reached!"); }
+  virtual void destroyConstant() { llvm_unreachable("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->getValueID() >= ConstantFirstVal &&
            V->getValueID() <= ConstantLastVal;
@@ -125,13 +140,14 @@ public:
     // to be here to avoid link errors.
     assert(getNumOperands() == 0 && "replaceUsesOfWithOnConstant must be "
            "implemented for all constants that have operands!");
-    assert(0 && "Constants that do not have operands cannot be using 'From'!");
+    llvm_unreachable("Constants that do not have operands cannot be using "
+                     "'From'!");
   }
-  
+
   static Constant *getNullValue(Type* Ty);
-  
-  /// @returns the value for an integer constant of the given type that has all
-  /// its bits set to true.
+
+  /// @returns the value for an integer or vector of integer constant of the
+  /// given type that has all its bits set to true.
   /// @brief Get the all ones value
   static Constant *getAllOnesValue(Type* Ty);