-//===- llvm/PassManager.h - Container for Passes -----------------*- C++ -*--=//
+//===- llvm/PassManager.h - Container for Passes ----------------*- C++ -*-===//
//
-// This file defines the PassManager class. This class is used to hold,
-// maintain, and optimize execution of Passes. The PassManager class ensures
-// that analysis results are available before a pass runs, and that Pass's are
-// destroyed when the PassManager is destroyed.
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a legacy redirect header for the old PassManager. It is intended to
+// be used by clients that have not been converted to be aware of the new pass
+// management infrastructure being built for LLVM, which is every client
+// initially. Eventually this header (and the legacy management layer) will go
+// away, but we want to minimize changes to out-of-tree users of LLVM in the
+// interim.
+//
+// Note that this header *must not* be included into the same file as the new
+// pass management infrastructure is included. Things will break spectacularly.
+// If you are starting that conversion, you should switch to explicitly
+// including LegacyPassManager.h and using the legacy namespace.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_PASSMANAGER_H
#define LLVM_PASSMANAGER_H
-class Pass;
-class Module;
-template<class UnitType> class PassManagerT;
-
-class PassManager {
- PassManagerT<Module> *PM; // This is a straightforward Pimpl class
-public:
- PassManager();
- ~PassManager();
-
- /// add - Add a pass to the queue of passes to run. This passes ownership of
- /// the Pass to the PassManager. When the PassManager is destroyed, the pass
- /// will be destroyed as well, so there is no need to delete the pass. This
- /// implies that all passes MUST be allocated with 'new'.
- ///
- void add(Pass *P);
-
- /// run - Execute all of the passes scheduled for execution. Keep track of
- /// whether any of the passes modifies the module, and if so, return true.
- ///
- bool run(Module &M);
-};
-
-class FunctionPass;
-class Function;
+#include "llvm/IR/LegacyPassManager.h"
-class FunctionPassManager {
- PassManagerT<Function> *PM; // This is a straightforward Pimpl class
-public:
- FunctionPassManager();
- ~FunctionPassManager();
+namespace llvm {
- /// add - Add a pass to the queue of passes to run. This passes
- /// ownership of the FunctionPass to the PassManager. When the
- /// PassManager is destroyed, the pass will be destroyed as well, so
- /// there is no need to delete the pass. This implies that all
- /// passes MUST be allocated with 'new'.
- ///
- void add(FunctionPass *P);
+// Pull these into the llvm namespace so that existing code that expects it
+// there can find it.
+using legacy::PassManagerBase;
+using legacy::PassManager;
+using legacy::FunctionPassManager;
- /// run - Execute all of the passes scheduled for execution. Keep
- /// track of whether any of the passes modifies the function, and if
- /// so, return true.
- ///
- bool run(Function &M);
-};
+}
#endif