Split ConstantVals.h into Constant.h and Constants.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2378 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 47 insertions, 0 deletions

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
new file mode 100644
index 0000000000..572d1d15ca
--- /dev/null
+++ b/include/llvm/Constant.h
@@ -0,0 +1,47 @@
+//===-- llvm/Constant.h - Constant class definition --------------*- C++ -*--=//
+//
+// This file contains the declaration of the Constant class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CONSTANT_H
+#define LLVM_CONSTANT_H
+
+#include "llvm/User.h"
+
+class Constant : public User {
+protected:
+  inline Constant(const Type *Ty) : User(Ty, Value::ConstantVal) {}
+  ~Constant() {}
+
+  // 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
+  // constant.  Any constants on our Use list must also be destroy'd.  The
+  // implementation must be sure to remove the constant from the list of
+  // 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!"); }
+  void destroyConstantImpl();
+public:
+  // 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);
+
+  // isNullValue - Return true if this is the value that would be returned by
+  // getNullValue.
+  virtual bool isNullValue() const = 0;
+
+  virtual void print(std::ostream &O) const;
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Constant *) { return true; }
+  static inline bool classof(const Value *V) {
+    return V->getValueType() == Value::ConstantVal;
+  }
+};
+
+#endif