X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FConstant.h;h=8072fd9f498a1bbe6ba967bc28e638c5218533c7;hb=9e6d1d1f5034347d237941f1bf08fba5c1583cd3;hp=80c88b623fc91d14aa3aa9ced4f95a54bfaa22c3;hpb=083a1e059768f6844b9f5292223bb49ad24f52d1;p=oota-llvm.git

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
index 80c88b623fc..8072fd9f498 100644
--- a/include/llvm/Constant.h
+++ b/include/llvm/Constant.h
@@ -17,6 +17,8 @@
 #include "llvm/User.h"
 
 namespace llvm {
+  class APInt;
+
   template<typename T> class SmallVectorImpl;
   class LLVMContext;
 
@@ -46,6 +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.
@@ -59,6 +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,
@@ -81,16 +91,13 @@ 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));
+  // 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));
   }
-  const Constant *getOperand(unsigned i) const {
-    return static_cast<const Constant*>(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
@@ -135,6 +142,17 @@ public:
            "implemented for all constants that have operands!");
     assert(0 && "Constants that do not have operands cannot be using 'From'!");
   }
+  
+  static Constant* getNullValue(const Type* Ty);
+  
+  /// @returns the value for an integer constant of the given type that has all
+  /// its bits set to true.
+  /// @brief Get the all ones value
+  static Constant* getAllOnesValue(const Type* Ty);
+
+  /// getIntegerValue - Return the value for an integer or pointer constant,
+  /// or a vector thereof, with the given scalar value.
+  static Constant* getIntegerValue(const Type* Ty, const APInt &V);
 };
 
 } // End llvm namespace