llvm-mirror/include/llvm/Analysis/CaptureTracking.h

//===----- llvm/Analysis/CaptureTracking.h - Pointer capture ----*- 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 routines that help determine which pointers are captured.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_CAPTURETRACKING_H
#define LLVM_ANALYSIS_CAPTURETRACKING_H

namespace llvm {
  class Value;

  /// PointerMayBeCaptured - Return true if this pointer value may be captured
  /// by the enclosing function (which is required to exist).  This routine can
  /// be expensive, so consider caching the results.  The boolean ReturnCaptures
  /// specifies whether returning the value (or part of it) from the function
  /// counts as capturing it or not.  The boolean StoreCaptures specified whether
  /// storing the value (or part of it) into memory anywhere automatically
  /// counts as capturing it or not.
  bool PointerMayBeCaptured(const Value *V,
                            bool ReturnCaptures,
                            bool StoreCaptures);

} // end namespace llvm

#endif