Move all of the header files which are involved in modelling the LLVM IR

into their new header subdirectory: include/llvm/IR. This matches the
directory structure of lib, and begins to correct a long standing point
of file layout clutter in LLVM.

There are still more header files to move here, but I wanted to handle
them in separate commits to make tracking what files make sense at each
layer easier.

The only really questionable files here are the target intrinsic
tablegen files. But that's a battle I'd rather not fight today.

I've updated both CMake and Makefile build systems (I think, and my
tests think, but I may have missed something).

I've also re-sorted the includes throughout the project. I'll be
committing updates to Clang, DragonEgg, and Polly momentarily.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 93 insertions, 0 deletions

diff --git a/include/llvm/IR/GlobalAlias.h b/include/llvm/IR/GlobalAlias.h
new file mode 100644
index 0000000..03c1648
--- /dev/null
+++ b/include/llvm/IR/GlobalAlias.h
@@ -0,0 +1,93 @@
+//===-------- llvm/GlobalAlias.h - GlobalAlias class ------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the declaration of the GlobalAlias class, which
+// represents a single function or variable alias in the IR.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_GLOBAL_ALIAS_H
+#define LLVM_GLOBAL_ALIAS_H
+
+#include "llvm/ADT/Twine.h"
+#include "llvm/ADT/ilist_node.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/OperandTraits.h"
+
+namespace llvm {
+
+class Module;
+template<typename ValueSubClass, typename ItemParentClass>
+  class SymbolTableListTraits;
+
+class GlobalAlias : public GlobalValue, public ilist_node<GlobalAlias> {
+  friend class SymbolTableListTraits<GlobalAlias, Module>;
+  void operator=(const GlobalAlias &) LLVM_DELETED_FUNCTION;
+  GlobalAlias(const GlobalAlias &) LLVM_DELETED_FUNCTION;
+
+  void setParent(Module *parent);
+
+public:
+  // allocate space for exactly one operand
+  void *operator new(size_t s) {
+    return User::operator new(s, 1);
+  }
+  /// GlobalAlias ctor - If a parent module is specified, the alias is
+  /// automatically inserted into the end of the specified module's alias list.
+  GlobalAlias(Type *Ty, LinkageTypes Linkage, const Twine &Name = "",
+              Constant* Aliasee = 0, Module *Parent = 0);
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
+
+  /// removeFromParent - This method unlinks 'this' from the containing module,
+  /// but does not delete it.
+  ///
+  virtual void removeFromParent();
+
+  /// eraseFromParent - This method unlinks 'this' from the containing module
+  /// and deletes it.
+  ///
+  virtual void eraseFromParent();
+
+  /// set/getAliasee - These methods retrive and set alias target.
+  void setAliasee(Constant *GV);
+  const Constant *getAliasee() const {
+    return getOperand(0);
+  }
+  Constant *getAliasee() {
+    return getOperand(0);
+  }
+  /// getAliasedGlobal() - Aliasee can be either global or bitcast of
+  /// global. This method retrives the global for both aliasee flavours.
+  const GlobalValue *getAliasedGlobal() const;
+
+  /// resolveAliasedGlobal() - This method tries to ultimately resolve the alias
+  /// by going through the aliasing chain and trying to find the very last
+  /// global. Returns NULL if a cycle was found. If stopOnWeak is false, then
+  /// the whole chain aliasing chain is traversed, otherwise - only strong
+  /// aliases.
+  const GlobalValue *resolveAliasedGlobal(bool stopOnWeak = true) const;
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline 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 llvm namespace
+
+#endif