mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
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* Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(DFG_JIT)
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#include "DFGAbstractValue.h"
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#include "DFGBasicBlock.h"
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#include "DFGBlockMap.h"
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#include "DFGGraph.h"
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#include "DFGNodeFlowProjection.h"
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namespace JSC { namespace DFG {
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class AtTailAbstractState {
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public:
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AtTailAbstractState(Graph&);
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~AtTailAbstractState();
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explicit operator bool() const { return true; }
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void initializeTo(BasicBlock* block)
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{
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m_block = block;
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}
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void createValueForNode(NodeFlowProjection);
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AbstractValue& forNode(NodeFlowProjection);
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AbstractValue& forNode(Edge edge) { return forNode(edge.node()); }
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Operands<AbstractValue>& variables() { return m_block->valuesAtTail; }
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BasicBlock* block() const { return m_block; }
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bool isValid() { return m_block->cfaDidFinish; }
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StructureClobberState structureClobberState() const { return m_block->cfaStructureClobberStateAtTail; }
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void setDidClobber(bool) { }
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void setStructureClobberState(StructureClobberState state) { RELEASE_ASSERT(state == m_block->cfaStructureClobberStateAtTail); }
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void setIsValid(bool isValid) { m_block->cfaDidFinish = isValid; }
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void setBranchDirection(BranchDirection) { }
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void setFoundConstants(bool) { }
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private:
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Graph& m_graph;
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BlockMap<HashMap<NodeFlowProjection, AbstractValue>> m_valuesAtTailMap;
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BasicBlock* m_block { nullptr };
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};
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} } // namespace JSC::DFG
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#endif // ENABLE(DFG_JIT)
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