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Diffstat (limited to 'Source/JavaScriptCore/dfg/DFGStructureRegistrationPhase.cpp')
| -rw-r--r-- | Source/JavaScriptCore/dfg/DFGStructureRegistrationPhase.cpp | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/Source/JavaScriptCore/dfg/DFGStructureRegistrationPhase.cpp b/Source/JavaScriptCore/dfg/DFGStructureRegistrationPhase.cpp deleted file mode 100644 index ac9273cdb..000000000 --- a/Source/JavaScriptCore/dfg/DFGStructureRegistrationPhase.cpp +++ /dev/null @@ -1,187 +0,0 @@ -/* - * Copyright (C) 2014, 2015 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 "DFGStructureRegistrationPhase.h" - -#if ENABLE(DFG_JIT) - -#include "DFGBasicBlockInlines.h" -#include "DFGGraph.h" -#include "DFGPhase.h" -#include "JSCInlines.h" - -namespace JSC { namespace DFG { - -class StructureRegistrationPhase : public Phase { -public: - StructureRegistrationPhase(Graph& graph) - : Phase(graph, "structure registration") - { - } - - bool run() - { - // FIXME: This phase shouldn't exist. We should have registered all structures by now, since - // we may already have done optimizations that rely on structures having been registered. - // Currently, we still have places where we don't register structures prior to this phase, - // but structures don't end up being used for optimization prior to this phase. That's a - // pretty fragile situation and we should fix it eventually. - // https://bugs.webkit.org/show_bug.cgi?id=147889 - - // We need to set this before this phase finishes. This phase doesn't do anything - // conditioned on this field, except for assertIsRegistered() below. We intend for that - // method to behave as if the phase was already finished. So, we set this up here. - m_graph.m_structureRegistrationState = AllStructuresAreRegistered; - - // These are pretty dumb, but needed to placate subsequent assertions. We don't actually - // have to watch these because there is no way to transition away from it, but they are - // watchable and so we will assert if they aren't watched. - registerStructure(m_graph.m_vm.structureStructure.get()); - registerStructure(m_graph.m_vm.stringStructure.get()); - registerStructure(m_graph.m_vm.getterSetterStructure.get()); - - for (FrozenValue* value : m_graph.m_frozenValues) - assertIsRegistered(value->structure()); - - for (BlockIndex blockIndex = m_graph.numBlocks(); blockIndex--;) { - BasicBlock* block = m_graph.block(blockIndex); - if (!block) - continue; - - for (unsigned nodeIndex = 0; nodeIndex < block->size(); ++nodeIndex) { - Node* node = block->at(nodeIndex); - - switch (node->op()) { - case CheckStructure: - assertAreRegistered(node->structureSet()); - break; - - case NewObject: - case ArrayifyToStructure: - case NewStringObject: - registerStructure(node->structure()); - break; - - case PutStructure: - case AllocatePropertyStorage: - case ReallocatePropertyStorage: - registerStructure(node->transition()->previous); - registerStructure(node->transition()->next); - break; - - case MultiGetByOffset: - for (const MultiGetByOffsetCase& getCase : node->multiGetByOffsetData().cases) - registerStructures(getCase.set()); - break; - - case MultiPutByOffset: - for (unsigned i = node->multiPutByOffsetData().variants.size(); i--;) { - PutByIdVariant& variant = node->multiPutByOffsetData().variants[i]; - registerStructures(variant.oldStructure()); - if (variant.kind() == PutByIdVariant::Transition) - registerStructure(variant.newStructure()); - } - break; - - case NewArray: - case NewArrayBuffer: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->arrayStructureForIndexingTypeDuringAllocation(node->indexingType())); - break; - - case NewTypedArray: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->typedArrayStructure(node->typedArrayType())); - break; - - case ToString: - case CallStringConstructor: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->stringObjectStructure()); - break; - - case CreateActivation: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->activationStructure()); - break; - - case CreateDirectArguments: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->directArgumentsStructure()); - break; - - case CreateScopedArguments: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->scopedArgumentsStructure()); - break; - - case NewRegexp: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->regExpStructure()); - break; - - case NewFunction: - registerStructure(m_graph.globalObjectFor(node->origin.semantic)->functionStructure()); - break; - - default: - break; - } - } - } - - return true; - } - -private: - void registerStructures(const StructureSet& set) - { - for (Structure* structure : set) - registerStructure(structure); - } - - void registerStructure(Structure* structure) - { - if (structure) - m_graph.registerStructure(structure); - } - - void assertAreRegistered(const StructureSet& set) - { - for (Structure* structure : set) - assertIsRegistered(structure); - } - - void assertIsRegistered(Structure* structure) - { - if (structure) - m_graph.assertIsRegistered(structure); - } -}; - -bool performStructureRegistration(Graph& graph) -{ - SamplingRegion samplingRegion("DFG Structure Registration Phase"); - return runPhase<StructureRegistrationPhase>(graph); -} - -} } // namespace JSC::DFG - -#endif // ENABLE(DFG_JIT) - |