dfg/DFGVariableAccessDataDump.cpp

   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 #include "config.h"
  27 #include "DFGVariableAccessDataDump.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGGraph.h"
  32 #include "DFGVariableAccessData.h"
  33
  34 namespace JSC { namespace DFG {
  35
  36 VariableAccessDataDump::VariableAccessDataDump(Graph& graph, VariableAccessData* data)
  37     : m_graph(graph)
  38     , m_data(data)
  39 {
  40 }
  41
  42 void VariableAccessDataDump::dump(PrintStream& out) const
  43 {
  44     unsigned index = std::numeric_limits<unsigned>::max();
  45     for (unsigned i = 0; i < m_graph.m_variableAccessData.size(); ++i) {
  46         if (&m_graph.m_variableAccessData[i] == m_data) {
  47             index = i;
  48             break;
  49         }
  50     }
  51
  52     ASSERT(index != std::numeric_limits<unsigned>::max());
  53
  54     if (!index) {
  55         out.print("a");
  56         return;
  57     }
  58
  59     while (index) {
  60         out.print(CharacterDump('A' + (index % 26)));
  61         index /= 26;
  62     }
  63
  64     if (m_data->isCaptured())
  65         out.print("*");
  66     else if (m_data->shouldNeverUnbox())
  67         out.print("!");
  68     else if (!m_data->shouldUnboxIfPossible())
  69         out.print("~");
  70
  71     out.print(AbbreviatedSpeculationDump(m_data->prediction()));
  72 }
  73
  74 } } // namespace JSC::DFG
  75
  76 #endif // ENABLE(DFG_JIT)
  77
  78