dfg/DFGNodeOrigin.h

   1 /*
   2  * Copyright (C) 2014 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 DFGNodeOrigin_h
  27 #define DFGNodeOrigin_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "CodeOrigin.h"
  32
  33 namespace JSC { namespace DFG {
  34
  35 struct NodeOrigin {
  36     NodeOrigin() { }
  37
  38     explicit NodeOrigin(CodeOrigin codeOrigin)
  39         : semantic(codeOrigin)
  40         , forExit(codeOrigin)
  41     {
  42     }
  43
  44     NodeOrigin(CodeOrigin semantic, CodeOrigin forExit)
  45         : semantic(semantic)
  46         , forExit(forExit)
  47     {
  48     }
  49
  50     bool isSet() const
  51     {
  52         return semantic.isSet();
  53     }
  54
  55     // Used for determining what bytecode this came from. This is important for
  56     // debugging, exceptions, and even basic execution semantics.
  57     CodeOrigin semantic;
  58     // Code origin for where the node exits to.
  59     CodeOrigin forExit;
  60 };
  61
  62 } } // namespace JSC::DFG
  63
  64 #endif // ENABLE(DFG_JIT)
  65
  66 #endif // DFGNodeOrigin_h
  67