dfg/DFGCommonData.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 "DFGCommonData.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "CodeBlock.h"
  32 #include "DFGNode.h"
  33 #include "DFGPlan.h"
  34 #include "JSCInlines.h"
  35 #include "VM.h"
  36
  37 namespace JSC { namespace DFG {
  38
  39 void CommonData::notifyCompilingStructureTransition(Plan& plan, CodeBlock* codeBlock, Node* node)
  40 {
  41     plan.transitions.addLazily(
  42         codeBlock,
  43         node->origin.semantic.codeOriginOwner(),
  44         node->structureTransitionData().previousStructure,
  45         node->structureTransitionData().newStructure);
  46 }
  47
  48 unsigned CommonData::addCodeOrigin(CodeOrigin codeOrigin)
  49 {
  50     if (codeOrigins.isEmpty()
  51         || codeOrigins.last() != codeOrigin)
  52         codeOrigins.append(codeOrigin);
  53     unsigned index = codeOrigins.size() - 1;
  54     ASSERT(codeOrigins[index] == codeOrigin);
  55     return index;
  56 }
  57
  58 void CommonData::shrinkToFit()
  59 {
  60     codeOrigins.shrinkToFit();
  61     weakReferences.shrinkToFit();
  62     transitions.shrinkToFit();
  63 }
  64
  65 bool CommonData::invalidate()
  66 {
  67     if (!isStillValid)
  68         return false;
  69     for (unsigned i = jumpReplacements.size(); i--;)
  70         jumpReplacements[i].fire();
  71     isStillValid = false;
  72     return true;
  73 }
  74
  75 } } // namespace JSC::DFG
  76
  77 #endif // ENABLE(DFG_JIT)
  78