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https://github.com/darlinghq/darling-JavaScriptCore.git
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75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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* Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>.
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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(JIT)
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#include "CCallHelpers.h"
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namespace JSC {
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class SnippetParams;
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typedef CCallHelpers::JumpList SnippetCompilerFunction(CCallHelpers&, SnippetParams&);
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typedef SharedTask<SnippetCompilerFunction> SnippetCompiler;
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// Snippet is the way to inject an opaque code generator into DFG and FTL.
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// While B3::Patchpoint is self-contained about its compilation information,
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// Snippet depends on which DFG Node invokes. For example, CheckDOM will
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// link returned failureCases to BadType OSRExit, but this information is offered
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// from CheckDOM DFG Node, not from this snippet. This snippet mainly focuses
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// on injecting a snippet generator that can tell register usage and can be used
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// in both DFG and FTL.
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class Snippet : public ThreadSafeRefCounted<Snippet> {
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public:
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static Ref<Snippet> create()
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{
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return adoptRef(*new Snippet());
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}
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template<typename Functor>
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void setGenerator(const Functor& functor)
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{
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m_generator = createSharedTask<SnippetCompilerFunction>(functor);
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}
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RefPtr<SnippetCompiler> generator() const { return m_generator; }
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uint8_t numGPScratchRegisters { 0 };
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uint8_t numFPScratchRegisters { 0 };
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protected:
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Snippet() = default;
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private:
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RefPtr<SnippetCompiler> m_generator;
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};
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}
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#endif
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