mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
/*
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* Copyright (C) 2015-2016 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 "B3CaseCollection.h"
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#include "B3SwitchCase.h"
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#include "B3Value.h"
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namespace JSC { namespace B3 {
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class SwitchValue final : public Value {
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public:
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static bool accepts(Kind kind) { return kind == Switch; }
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~SwitchValue() final;
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// numCaseValues() + 1 == numSuccessors().
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unsigned numCaseValues() const { return m_values.size(); }
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// The successor for this case value is at the same index.
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int64_t caseValue(unsigned index) const { return m_values[index]; }
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const Vector<int64_t>& caseValues() const { return m_values; }
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CaseCollection cases(const BasicBlock* owner) const { return CaseCollection(this, owner); }
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CaseCollection cases() const { return cases(owner); }
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bool hasFallThrough(const BasicBlock*) const;
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bool hasFallThrough() const;
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BasicBlock* fallThrough(const BasicBlock* owner);
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// These two functions can be called in any order.
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void setFallThrough(BasicBlock*, const FrequentedBlock&);
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void appendCase(BasicBlock*, const SwitchCase&);
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JS_EXPORT_PRIVATE void setFallThrough(const FrequentedBlock&);
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JS_EXPORT_PRIVATE void appendCase(const SwitchCase&);
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void dumpSuccessors(const BasicBlock*, PrintStream&) const final;
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B3_SPECIALIZE_VALUE_FOR_FIXED_CHILDREN(1)
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B3_SPECIALIZE_VALUE_FOR_FINAL_SIZE_FIXED_CHILDREN
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private:
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void dumpMeta(CommaPrinter&, PrintStream&) const final;
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friend class Procedure;
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friend class Value;
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static Opcode opcodeFromConstructor(Origin, Value*) { return Switch; }
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JS_EXPORT_PRIVATE SwitchValue(Origin, Value* child);
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Vector<int64_t> m_values;
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};
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} } // namespace JSC::B3
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#endif // ENABLE(B3_JIT)
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