mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
/*
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* Copyright (C) 2015 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 <wtf/PrintStream.h>
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namespace JSC { namespace B3 {
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// Whoever generates B3IR can choose to put origins on values. When you do this, B3 will be able to
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// account, down to the machine code, which instruction corresponds to which origin. B3
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// transformations must preserve Origins carefully. It's an error to write a transformation that
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// either drops Origins or lies about them.
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class Origin {
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public:
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explicit Origin(const void* data = nullptr)
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: m_data(data)
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{
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}
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explicit operator bool() const { return !!m_data; }
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const void* data() const { return m_data; }
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bool operator==(const Origin& other) const { return m_data == other.m_data; }
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// You should avoid using this. Use OriginDump instead.
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void dump(PrintStream&) const;
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private:
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const void* m_data;
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};
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} } // namespace JSC::B3
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#endif // ENABLE(B3_JIT)
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