2.7: Note that DataTypes.h moved.

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

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
index 9c4365febe272ec4171f9998993202efaae426ba..8647299299827d40de948587025f3e9e2624aa1b 100644 (file)
--- a/include/llvm/Constant.h
+++ b/include/llvm/Constant.h
@@ -20,7 +20,7 @@ namespace llvm {
   class APInt;
 
   template<typename T> class SmallVectorImpl;
-  struct LLVMContext;
+  class LLVMContext;
 
 /// This is an important base class in LLVM. It provides the common facilities
 /// of all constant values in an LLVM program. A constant is a value that is
@@ -48,6 +48,10 @@ protected:
     : User(ty, vty, Ops, NumOps) {}
 
   void destroyConstantImpl();
+  
+  void setOperand(unsigned i, Value *V) {
+    User::setOperand(i, V);
+  }
 public:
   /// isNullValue - Return true if this is the value that would be returned by
   /// getNullValue.
@@ -61,6 +65,10 @@ public:
   /// true for things like constant expressions that could divide by zero.
   bool canTrap() const;
 
+  /// isConstantUsed - Return true if the constant has users other than constant
+  /// exprs and other dangling things.
+  bool isConstantUsed() const;
+  
   enum PossibleRelocationsTy {
     NoRelocation = 0,
     LocalRelocation = 1,
@@ -83,24 +91,20 @@ public:
   /// FIXME: This really should not be in VMCore.
   PossibleRelocationsTy getRelocationInfo() const;
   
-  // Specialize get/setOperand for Constants 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));
+  // Specialize get/setOperand for Users as their operands are always
+  // constants or BasicBlocks as well.
+  User *getOperand(unsigned i) {
+    return static_cast<User*>(User::getOperand(i));
   }
-  void setOperand(unsigned i, Constant *C) {
-    User::setOperand(i, C);
+  const User *getOperand(unsigned i) const {
+    return static_cast<const User*>(User::getOperand(i));
   }
   
   /// 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(LLVMContext &Context, 
-                         SmallVectorImpl<Constant*> &Elts) const;
+  void getVectorElements(SmallVectorImpl<Constant*> &Elts) 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