dfg/DFGMinifiedNode.cpp

   1 /*
   2  * Copyright (C) 2012, 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 "DFGMinifiedNode.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGNode.h"
  32
  33 namespace JSC { namespace DFG {
  34
  35 MinifiedNode MinifiedNode::fromNode(Node* node)
  36 {
  37     ASSERT(belongsInMinifiedGraph(node->op()));
  38     MinifiedNode result;
  39     result.m_id = MinifiedID(node);
  40     result.m_op = node->op();
  41     if (hasChild(node->op()))
  42         result.m_childOrInfo = MinifiedID(node->child1().node()).m_id;
  43     else if (hasConstantNumber(node->op()))
  44         result.m_childOrInfo = node->constantNumber();
  45     else if (hasWeakConstant(node->op()))
  46         result.m_childOrInfo = bitwise_cast<uintptr_t>(node->weakConstant());
  47     else {
  48         ASSERT(node->op() == PhantomArguments);
  49         result.m_childOrInfo = 0;
  50     }
  51     return result;
  52 }
  53
  54 } } // namespace JSC::DFG
  55
  56 #endif // ENABLE(DFG_JIT)
  57