/* * Copyright (C) 2014 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "ComplexGetStatus.h" #include "JSCInlines.h" namespace JSC { ComplexGetStatus ComplexGetStatus::computeFor( CodeBlock* profiledBlock, Structure* headStructure, StructureChain* chain, unsigned chainCount, UniquedStringImpl* uid) { // FIXME: We should assert that we never see a structure that // hasImpureGetOwnPropertySlot() but for which we don't // newImpurePropertyFiresWatchpoints(). We're not at a point where we can do // that, yet. // https://bugs.webkit.org/show_bug.cgi?id=131810 if (headStructure->takesSlowPathInDFGForImpureProperty()) return takesSlowPath(); ComplexGetStatus result; result.m_kind = Inlineable; if (chain && chainCount) { result.m_chain = adoptRef(new IntendedStructureChain( profiledBlock, headStructure, chain, chainCount)); if (!result.m_chain->isStillValid()) return skip(); if (headStructure->takesSlowPathInDFGForImpureProperty() || result.m_chain->takesSlowPathInDFGForImpureProperty()) return takesSlowPath(); JSObject* currentObject = result.m_chain->terminalPrototype(); Structure* currentStructure = result.m_chain->last(); ASSERT_UNUSED(currentObject, currentObject); result.m_offset = currentStructure->getConcurrently(uid, result.m_attributes); } else { result.m_offset = headStructure->getConcurrently(uid, result.m_attributes); } if (!isValidOffset(result.m_offset)) return takesSlowPath(); return result; } } // namespace JSC