dfg/DFGVariableEventStream.h

   1 /*
   2  * Copyright (C) 2012 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef DFGVariableEventStream_h
  27 #define DFGVariableEventStream_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGCommon.h"
  32 #include "DFGMinifiedGraph.h"
  33 #include "DFGVariableEvent.h"
  34 #include "Operands.h"
  35 #include <wtf/Vector.h>
  36
  37 namespace JSC { namespace DFG {
  38
  39 class VariableEventStream : public Vector<VariableEvent> {
  40 public:
  41     void appendAndLog(const VariableEvent& event)
  42     {
  43         append(event);
  44     }
  45
  46     void reconstruct(
  47         CodeBlock*, CodeOrigin, MinifiedGraph&,
  48         unsigned index, Operands<ValueRecovery>&) const;
  49
  50 private:
  51     bool tryToSetConstantRecovery(ValueRecovery&, CodeBlock*, MinifiedNode*) const;
  52
  53     void logEvent(const VariableEvent&);
  54 };
  55
  56 } } // namespace JSC::DFG
  57
  58 #endif // ENABLE(DFG_JIT)
  59
  60 #endif // DFGVariableEventStream_h
  61