mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-16 05:49:58 +00:00
142 lines
4.0 KiB
C++
142 lines
4.0 KiB
C++
/*
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* Copyright (C) 2014 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 "DFGNode.h"
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namespace JSC { namespace DFG {
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class PureValue {
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public:
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PureValue()
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: m_op(LastNodeType)
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, m_info(0)
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{
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}
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PureValue(NodeType op, const AdjacencyList& children, uintptr_t info)
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: m_op(op)
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, m_children(children.sanitized())
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, m_info(info)
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{
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ASSERT(!(defaultFlags(op) & NodeHasVarArgs));
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}
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PureValue(NodeType op, const AdjacencyList& children, const void* ptr)
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: PureValue(op, children, bitwise_cast<uintptr_t>(ptr))
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{
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}
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PureValue(NodeType op, const AdjacencyList& children)
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: PureValue(op, children, static_cast<uintptr_t>(0))
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{
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}
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PureValue(Node* node, uintptr_t info)
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: PureValue(node->op(), node->children, info)
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{
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}
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PureValue(Node* node, const void* ptr)
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: PureValue(node->op(), node->children, ptr)
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{
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}
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PureValue(Node* node)
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: PureValue(node->op(), node->children)
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{
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}
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PureValue(WTF::HashTableDeletedValueType)
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: m_op(LastNodeType)
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, m_info(1)
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{
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}
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bool operator!() const { return m_op == LastNodeType && !m_info; }
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NodeType op() const { return m_op; }
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const AdjacencyList& children() const { return m_children; }
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uintptr_t info() const { return m_info; }
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unsigned hash() const
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{
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return WTF::IntHash<int>::hash(static_cast<int>(m_op)) + m_children.hash() + m_info;
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}
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bool operator==(const PureValue& other) const
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{
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return m_op == other.m_op
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&& m_children == other.m_children
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&& m_info == other.m_info;
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}
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bool isHashTableDeletedValue() const
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{
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return m_op == LastNodeType && m_info;
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}
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void dump(PrintStream& out) const;
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private:
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NodeType m_op;
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AdjacencyList m_children;
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uintptr_t m_info;
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};
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struct PureValueHash {
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static unsigned hash(const PureValue& key) { return key.hash(); }
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static bool equal(const PureValue& a, const PureValue& b) { return a == b; }
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static const bool safeToCompareToEmptyOrDeleted = true;
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};
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} } // namespace JSC::DFG
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namespace WTF {
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template<typename T> struct DefaultHash;
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template<> struct DefaultHash<JSC::DFG::PureValue> {
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typedef JSC::DFG::PureValueHash Hash;
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};
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template<typename T> struct HashTraits;
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template<> struct HashTraits<JSC::DFG::PureValue> : SimpleClassHashTraits<JSC::DFG::PureValue> {
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static const bool emptyValueIsZero = false;
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};
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} // namespace WTF
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namespace JSC { namespace DFG {
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typedef HashMap<PureValue, Node*> PureMap;
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typedef HashMap<PureValue, Vector<Node*>> PureMultiMap;
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} } // namespace JSC::DFG
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#endif // ENABLE(DFG_JIT)
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