ftl/FTLExitPropertyValue.h

   1 /*
   2  * Copyright (C) 2014, 2015 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 FTLExitPropertyValue_h
  27 #define FTLExitPropertyValue_h
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "DFGPromotedHeapLocation.h"
  32 #include "FTLExitValue.h"
  33
  34 namespace JSC {
  35
  36 class TrackedReferences;
  37
  38 namespace FTL {
  39
  40 class ExitPropertyValue {
  41 public:
  42     ExitPropertyValue()
  43     {
  44     }
  45
  46     ExitPropertyValue(DFG::PromotedLocationDescriptor location, const ExitValue& value)
  47         : m_location(location)
  48         , m_value(value)
  49     {
  50         ASSERT(!!location == !!value);
  51     }
  52
  53     bool operator!() const { return !m_location; }
  54
  55     DFG::PromotedLocationDescriptor location() const { return m_location; }
  56     const ExitValue& value() const { return m_value; }
  57
  58     ExitPropertyValue withLocalsOffset(int offset) const;
  59
  60     void dump(PrintStream& out) const;
  61
  62     void validateReferences(const TrackedReferences&) const;
  63
  64 private:
  65     DFG::PromotedLocationDescriptor m_location;
  66     ExitValue m_value;
  67 };
  68
  69 } } // namespace JSC::FTL
  70
  71 #endif // ENABLE(FTL_JIT)
  72
  73 #endif // FTLExitPropertyValue_h
  74