dfg/DFGResurrectionForValidationPhase.cpp

   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 #include "config.h"
  27 #include "DFGResurrectionForValidationPhase.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGBasicBlockInlines.h"
  32 #include "DFGGraph.h"
  33 #include "DFGInsertionSet.h"
  34 #include "DFGPhase.h"
  35 #include "JSCInlines.h"
  36
  37 namespace JSC { namespace DFG {
  38
  39 class ResurrectionForValidationPhase : public Phase {
  40 public:
  41     ResurrectionForValidationPhase(Graph& graph)
  42         : Phase(graph, "resurrection for validation")
  43     {
  44     }
  45
  46     bool run()
  47     {
  48         InsertionSet insertionSet(m_graph);
  49
  50         for (BlockIndex blockIndex = m_graph.numBlocks(); blockIndex--;) {
  51             BasicBlock* block = m_graph.block(blockIndex);
  52             if (!block)
  53                 continue;
  54
  55             for (unsigned nodeIndex = 0; nodeIndex < block->size(); ++nodeIndex) {
  56                 Node* node = block->at(nodeIndex);
  57                 if (!node->hasResult())
  58                     continue;
  59                 insertionSet.insertNode(
  60                     nodeIndex + 1, SpecNone, Phantom, node->origin, node->defaultEdge());
  61             }
  62
  63             insertionSet.execute(block);
  64         }
  65
  66         return true;
  67     }
  68 };
  69
  70 bool performResurrectionForValidation(Graph& graph)
  71 {
  72     SamplingRegion samplingRegion("DFG Resurrection For Validation Phase");
  73     return runPhase<ResurrectionForValidationPhase>(graph);
  74 }
  75
  76 } } // namespace JSC::DFG
  77
  78 #endif // ENABLE(DFG_JIT)
  79