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, 131 insertions, 0 deletions

diff --git a/include/llvm/IR/LLVMContext.h b/include/llvm/IR/LLVMContext.h
new file mode 100644
index 0000000000..58fb39f056
--- /dev/null
+++ b/include/llvm/IR/LLVMContext.h
@@ -0,0 +1,131 @@
+//===-- llvm/LLVMContext.h - Class for managing "global" state --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares LLVMContext, a container of "global" state in LLVM, such
+// as the global type and constant uniquing tables.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LLVMCONTEXT_H
+#define LLVM_LLVMCONTEXT_H
+
+#include "llvm/Support/Compiler.h"
+
+namespace llvm {
+
+class LLVMContextImpl;
+class StringRef;
+class Twine;
+class Instruction;
+class Module;
+class SMDiagnostic;
+template <typename T> class SmallVectorImpl;
+
+/// This is an important class for using LLVM in a threaded context.  It
+/// (opaquely) owns and manages the core "global" data of LLVM's core 
+/// infrastructure, including the type and constant uniquing tables.
+/// LLVMContext itself provides no locking guarantees, so you should be careful
+/// to have one context per thread.
+class LLVMContext {
+public:
+  LLVMContextImpl *const pImpl;
+  LLVMContext();
+  ~LLVMContext();
+  
+  // Pinned metadata names, which always have the same value.  This is a
+  // compile-time performance optimization, not a correctness optimization.
+  enum {
+    MD_dbg = 0,  // "dbg"
+    MD_tbaa = 1, // "tbaa"
+    MD_prof = 2,  // "prof"
+    MD_fpmath = 3,  // "fpmath"
+    MD_range = 4, // "range"
+    MD_tbaa_struct = 5 // "tbaa.struct"
+  };
+  
+  /// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
+  /// This ID is uniqued across modules in the current LLVMContext.
+  unsigned getMDKindID(StringRef Name) const;
+  
+  /// getMDKindNames - Populate client supplied SmallVector with the name for
+  /// custom metadata IDs registered in this LLVMContext.
+  void getMDKindNames(SmallVectorImpl<StringRef> &Result) const;
+  
+  
+  typedef void (*DiagHandlerTy)(const SMDiagnostic&, void *Context,
+                                unsigned LocCookie);
+  
+  /// setDiagnosticHandler - This method sets a handler that is invoked
+  /// when problems are detected by the backend.  The first argument is a
+  /// function pointer and the second is a context pointer that gets passed
+  /// into the DiagHandler.
+  ///
+  /// LLVMContext doesn't take ownership or interpret either of these
+  /// pointers.
+  void setDiagnosticHandler(DiagHandlerTy DiagHandler, void *DiagContext = 0);
+
+  /// getDiagnosticHandler - Return the diagnostic handler set by
+  /// setDiagnosticHandler.
+  DiagHandlerTy getDiagnosticHandler() const;
+
+  /// getDiagnosticContext - Return the diagnostic context set by
+  /// setDiagnosticHandler.
+  void *getDiagnosticContext() const;
+  
+  /// FIXME: Temporary copies of the old names; to be removed as soon as
+  /// clang switches to the new ones.
+  typedef DiagHandlerTy InlineAsmDiagHandlerTy;
+  void setInlineAsmDiagnosticHandler(InlineAsmDiagHandlerTy DiagHandler,
+                                     void *DiagContext = 0) {
+    setDiagnosticHandler(DiagHandler, DiagContext);
+  }
+  InlineAsmDiagHandlerTy getInlineAsmDiagnosticHandler() const {
+    return getDiagnosticHandler();
+  }
+  void *getInlineAsmDiagnosticContext() const {
+    return getDiagnosticContext();
+  }
+  
+  /// emitError - Emit an error message to the currently installed error handler
+  /// with optional location information.  This function returns, so code should
+  /// be prepared to drop the erroneous construct on the floor and "not crash".
+  /// The generated code need not be correct.  The error message will be
+  /// implicitly prefixed with "error: " and should not end with a ".".
+  void emitError(unsigned LocCookie, const Twine &ErrorStr);
+  void emitError(const Instruction *I, const Twine &ErrorStr);
+  void emitError(const Twine &ErrorStr);
+
+  /// emitWarning - This is similar to emitError but it emits a warning instead
+  /// of an error.
+  void emitWarning(unsigned LocCookie, const Twine &ErrorStr);
+  void emitWarning(const Instruction *I, const Twine &ErrorStr);
+  void emitWarning(const Twine &ErrorStr);
+
+private:
+  LLVMContext(LLVMContext&) LLVM_DELETED_FUNCTION;
+  void operator=(LLVMContext&) LLVM_DELETED_FUNCTION;
+
+  /// addModule - Register a module as being instantiated in this context.  If
+  /// the context is deleted, the module will be deleted as well.
+  void addModule(Module*);
+  
+  /// removeModule - Unregister a module from this context.
+  void removeModule(Module*);
+  
+  // Module needs access to the add/removeModule methods.
+  friend class Module;
+};
+
+/// getGlobalContext - Returns a global context.  This is for LLVM clients that
+/// only care about operating on a single thread.
+extern LLVMContext &getGlobalContext();
+
+}
+
+#endif