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https://github.com/darlinghq/darling-JavaScriptCore.git
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64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/*
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* Copyright (C) 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(B3_JIT)
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#include "B3ValueKey.h"
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#include <wtf/HashMap.h>
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#include <wtf/Vector.h>
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namespace JSC { namespace B3 {
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class BasicBlock;
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class Dominators;
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class Value;
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typedef Vector<Value*, 1> Matches;
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// This is a reusable utility for doing pure CSE. You can use it to do pure CSE on a program by just
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// proceeding in order and calling process().
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class PureCSE {
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public:
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PureCSE();
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~PureCSE();
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void clear();
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Value* findMatch(const ValueKey&, BasicBlock*, Dominators&);
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bool process(Value*, Dominators&);
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private:
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HashMap<ValueKey, Matches> m_map;
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};
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bool pureCSE(Procedure&);
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} } // namespace JSC::B3
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#endif // ENABLE(B3_JIT)
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