dfg/DFGOSRExitPreparation.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 "DFGOSRExitPreparation.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "CodeBlock.h"
  32 #include "Executable.h"
  33 #include "JIT.h"
  34 #include "JITCode.h"
  35 #include "JSCInlines.h"
  36
  37 namespace JSC { namespace DFG {
  38
  39 void prepareCodeOriginForOSRExit(ExecState* exec, CodeOrigin codeOrigin)
  40 {
  41     VM& vm = exec->vm();
  42     DeferGC deferGC(vm.heap);
  43
  44     for (; codeOrigin.inlineCallFrame; codeOrigin = codeOrigin.inlineCallFrame->caller) {
  45         FunctionExecutable* executable =
  46             static_cast<FunctionExecutable*>(codeOrigin.inlineCallFrame->executable.get());
  47         CodeBlock* codeBlock = executable->baselineCodeBlockFor(
  48             codeOrigin.inlineCallFrame->isCall ? CodeForCall : CodeForConstruct);
  49
  50         if (codeBlock->jitType() == JSC::JITCode::BaselineJIT)
  51             continue;
  52         ASSERT(codeBlock->jitType() == JSC::JITCode::InterpreterThunk);
  53         JIT::compile(&vm, codeBlock, JITCompilationMustSucceed);
  54         codeBlock->install();
  55     }
  56 }
  57
  58 } } // namespace JSC::DFG
  59
  60 #endif // ENABLE(DFG_JIT)
  61