PassManager.h revision 18961504fc2b299578dba817900a0696cf3ccc4d 
1//===- llvm/PassManager.h - Container for Passes -----------------*- C++ -*--=//
2//
3// This file defines the PassManager class.  This class is used to hold,
4// maintain, and optimize execution of Pass's.  The PassManager class ensures
5// that analysis results are available before a pass runs, and that Pass's are
6// destroyed when the PassManager is destroyed.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef LLVM_PASSMANAGER_H
11#define LLVM_PASSMANAGER_H
12
13class Pass;
14class Module;
15template<class UnitType> class PassManagerT;
16
17class PassManager {
18  PassManagerT<Module> *PM;    // This is a straightforward Pimpl class
19public:
20  PassManager();
21  ~PassManager();
22
23  // add - Add a pass to the queue of passes to run.  This passes ownership of
24  // the Pass to the PassManager.  When the PassManager is destroyed, the pass
25  // will be destroyed as well, so there is no need to delete the pass.  This
26  // implies that all passes MUST be allocated with 'new'.
27  //
28  void add(Pass *P);
29
30  // run - Execute all of the passes scheduled for execution.  Keep track of
31  // whether any of the functions modifies the program, and if so, return true.
32  //
33  bool run(Module &M);
34};
35
36#endif
37