dfg/DFGEdgeUsesStructure.h

   1 /*
   2  * Copyright (C) 2013 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 DFGEdgeUsesStructure_h
  27 #define DFGEdgeUsesStructure_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGGraph.h"
  32
  33 namespace JSC { namespace DFG {
  34
  35 class EdgeUsesStructure {
  36 public:
  37     EdgeUsesStructure()
  38         : m_result(false)
  39     {
  40     }
  41
  42     void operator()(Node*, Edge edge)
  43     {
  44         m_result |= usesStructure(edge.useKind());
  45     }
  46
  47     bool result() const { return m_result; }
  48
  49 private:
  50     bool m_result;
  51 };
  52
  53 inline bool edgesUseStructure(Graph& graph, Node* node)
  54 {
  55     EdgeUsesStructure edgeUsesStructure;
  56     DFG_NODE_DO_TO_CHILDREN(graph, node, edgeUsesStructure);
  57     return edgeUsesStructure.result();
  58 }
  59
  60 } } // namespace JSC::DFG
  61
  62 #endif // ENABLE(DFG_JIT)
  63
  64 #endif // DFGEdgeUsesStructure_h
  65