Add two helper functions.

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

diff --git a/include/llvm/Value.h b/include/llvm/Value.h
index 73501995fde5ef75fcf8eb592e48b0aedf706083..2e618a5e863fd127f7883f0e007db9d49510490a 100644 (file)
--- a/include/llvm/Value.h
+++ b/include/llvm/Value.h
@@ -19,7 +19,7 @@
 
 #include "llvm/AbstractTypeUser.h"
 #include "llvm/Use.h"
-#include "Support/Casting.h"
+#include "llvm/Support/Casting.h"
 #include <string>
 
 namespace llvm {
@@ -27,7 +27,7 @@ namespace llvm {
 class Constant;
 class Argument;
 class Instruction;
-struct BasicBlock;
+class BasicBlock;
 class GlobalValue;
 class Function;
 class GlobalVariable;
@@ -40,7 +40,7 @@ class SymbolTable;
 /// Value - The base class of all values computed by a program that may be used
 /// as operands to other values.
 ///
-struct Value {
+class Value {
 private:
   unsigned SubclassID;               // Subclass identifier (for isa/dyn_cast)
   PATypeHolder Ty;
@@ -89,8 +89,9 @@ public:
   //
   typedef UseListIteratorWrapper      use_iterator;
   typedef UseListConstIteratorWrapper use_const_iterator;
+  typedef iplist<Use>::size_type      size_type;
 
-  unsigned           use_size()  const { return Uses.size();  }
+  size_type          use_size()  const { return Uses.size();  }
   bool               use_empty() const { return Uses.empty(); }
   use_iterator       use_begin()       { return Uses.begin(); }
   use_const_iterator use_begin() const { return Uses.begin(); }
@@ -126,6 +127,7 @@ public:
     BasicBlockVal,            // This is an instance of BasicBlock
     FunctionVal,              // This is an instance of Function
     GlobalVariableVal,        // This is an instance of GlobalVariable
+    UndefValueVal,            // This is an instance of UndefValue
     ConstantExprVal,          // This is an instance of ConstantExpr
     ConstantAggregateZeroVal, // This is an instance of ConstantAggregateNull
     SimpleConstantVal,        // This is some other type of Constant
@@ -136,6 +138,15 @@ public:
     return SubclassID;
   }
 
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Value *V) {
+    return true; // Values are always values.
+  }
+
+  /// getRawType - This should only be used to implement the vmcore library.
+  ///
+  const Type *getRawType() const { return Ty.getRawType(); }
+
 private:
   /// FIXME: this is a gross hack, needed by another gross hack.  Eliminate!
   void setValueType(unsigned VT) { SubclassID = VT; }
@@ -180,11 +191,12 @@ void Use::set(Value *V) {
 // the subtype header files to test to see if the value is a subclass...
 //
 template <> inline bool isa_impl<Constant, Value>(const Value &Val) { 
-  return Val.getValueType() == Value::ConstantExprVal ||
-         Val.getValueType() == Value::SimpleConstantVal ||
-         Val.getValueType() == Value::ConstantAggregateZeroVal ||
+  return Val.getValueType() == Value::SimpleConstantVal ||
          Val.getValueType() == Value::FunctionVal ||
-        Val.getValueType() == Value::GlobalVariableVal;
+        Val.getValueType() == Value::GlobalVariableVal ||
+         Val.getValueType() == Value::ConstantExprVal ||
+         Val.getValueType() == Value::ConstantAggregateZeroVal ||
+         Val.getValueType() == Value::UndefValueVal;
 }
 template <> inline bool isa_impl<Argument, Value>(const Value &Val) { 
   return Val.getValueType() == Value::ArgumentVal;