dfg/DFGPhiChildren.cpp

   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 #include "config.h"
  27 #include "DFGPhiChildren.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGGraph.h"
  32
  33 namespace JSC { namespace DFG {
  34
  35 PhiChildren::PhiChildren()
  36 {
  37 }
  38
  39 PhiChildren::PhiChildren(Graph& graph)
  40 {
  41     for (BasicBlock* block : graph.blocksInNaturalOrder()) {
  42         for (Node* node : *block) {
  43             if (node->op() != Upsilon)
  44                 continue;
  45
  46             m_children.add(node->phi(), List()).iterator->value.append(node);
  47         }
  48     }
  49 }
  50
  51 PhiChildren::~PhiChildren()
  52 {
  53 }
  54
  55 const PhiChildren::List& PhiChildren::upsilonsOf(Node* node) const
  56 {
  57     ASSERT(node->op() == Phi);
  58     return m_children.find(node)->value;
  59 }
  60
  61 } } // namespace JSC::DFG
  62
  63 #endif // ENABLE(DFG_JIT)
  64