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thirdparty/capstone/suite/synctools/tablegen/include/llvm/IR/GlobalAlias.h

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+//===-------- llvm/GlobalAlias.h - GlobalAlias class ------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the declaration of the GlobalAlias class, which
+// represents a single function or variable alias in the IR.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_IR_GLOBALALIAS_H
+#define LLVM_IR_GLOBALALIAS_H
+
+#include "llvm/ADT/ilist_node.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/OperandTraits.h"
+#include "llvm/IR/Value.h"
+
+namespace llvm {
+
+class Twine;
+class Module;
+template <typename ValueSubClass> class SymbolTableListTraits;
+
+class GlobalAlias : public GlobalValue, public ilist_node<GlobalAlias> {
+  friend class SymbolTableListTraits<GlobalAlias>;
+
+  GlobalAlias(Type *Ty, unsigned AddressSpace, LinkageTypes Linkage,
+              const Twine &Name, Constant *Aliasee, Module *Parent);
+
+public:
+  GlobalAlias(const GlobalAlias &) = delete;
+  GlobalAlias &operator=(const GlobalAlias &) = delete;
+
+  /// If a parent module is specified, the alias is automatically inserted into
+  /// the end of the specified module's alias list.
+  static GlobalAlias *create(Type *Ty, unsigned AddressSpace,
+                             LinkageTypes Linkage, const Twine &Name,
+                             Constant *Aliasee, Module *Parent);
+
+  // Without the Aliasee.
+  static GlobalAlias *create(Type *Ty, unsigned AddressSpace,
+                             LinkageTypes Linkage, const Twine &Name,
+                             Module *Parent);
+
+  // The module is taken from the Aliasee.
+  static GlobalAlias *create(Type *Ty, unsigned AddressSpace,
+                             LinkageTypes Linkage, const Twine &Name,
+                             GlobalValue *Aliasee);
+
+  // Type, Parent and AddressSpace taken from the Aliasee.
+  static GlobalAlias *create(LinkageTypes Linkage, const Twine &Name,
+                             GlobalValue *Aliasee);
+
+  // Linkage, Type, Parent and AddressSpace taken from the Aliasee.
+  static GlobalAlias *create(const Twine &Name, GlobalValue *Aliasee);
+
+  // allocate space for exactly one operand
+  void *operator new(size_t S) { return User::operator new(S, 1); }
+  void operator delete(void *Ptr) { User::operator delete(Ptr); }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
+
+  void copyAttributesFrom(const GlobalAlias *Src) {
+    GlobalValue::copyAttributesFrom(Src);
+  }
+
+  /// removeFromParent - This method unlinks 'this' from the containing module,
+  /// but does not delete it.
+  ///
+  void removeFromParent();
+
+  /// eraseFromParent - This method unlinks 'this' from the containing module
+  /// and deletes it.
+  ///
+  void eraseFromParent();
+
+  /// These methods retrieve and set alias target.
+  void setAliasee(Constant *Aliasee);
+  const Constant *getAliasee() const {
+    return static_cast<Constant *>(Op<0>().get());
+  }
+  Constant *getAliasee() { return static_cast<Constant *>(Op<0>().get()); }
+
+  const GlobalObject *getAliaseeObject() const;
+  GlobalObject *getAliaseeObject() {
+    return const_cast<GlobalObject *>(
+        static_cast<const GlobalAlias *>(this)->getAliaseeObject());
+  }
+
+  static bool isValidLinkage(LinkageTypes L) {
+    return isExternalLinkage(L) || isLocalLinkage(L) ||
+      isWeakLinkage(L) || isLinkOnceLinkage(L);
+  }
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static bool classof(const Value *V) {
+    return V->getValueID() == Value::GlobalAliasVal;
+  }
+};
+
+template <>
+struct OperandTraits<GlobalAlias>
+    : public FixedNumOperandTraits<GlobalAlias, 1> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalAlias, Constant)
+
+} // end namespace llvm
+
+#endif // LLVM_IR_GLOBALALIAS_H