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/*
* Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DFGAtTailAbstractState.h"
#include "DFGBlockMapInlines.h"
#if ENABLE(DFG_JIT)
#include "JSCJSValueInlines.h"
namespace JSC { namespace DFG {
AtTailAbstractState::AtTailAbstractState(Graph& graph)
: m_graph(graph)
, m_valuesAtTailMap(m_graph)
, m_tupleAbstractValues(m_graph)
{
for (BasicBlock* block : graph.blocksInNaturalOrder()) {
auto& valuesAtTail = m_valuesAtTailMap.at(block);
valuesAtTail.clear();
for (auto& valueAtTailPair : block->ssa->valuesAtTail)
valuesAtTail.add(valueAtTailPair.node, valueAtTailPair.value);
m_tupleAbstractValues.at(block).grow(m_graph.m_tupleData.size());
}
}
AtTailAbstractState::~AtTailAbstractState() = default;
void AtTailAbstractState::createValueForNode(NodeFlowProjection node)
{
m_valuesAtTailMap.at(m_block).add(node, AbstractValue());
}
AbstractValue& AtTailAbstractState::forNode(NodeFlowProjection node)
{
ASSERT(!node->isTuple());
auto& valuesAtTail = m_valuesAtTailMap.at(m_block);
HashMap<NodeFlowProjection, AbstractValue>::iterator iter = valuesAtTail.find(node);
DFG_ASSERT(m_graph, node.node(), iter != valuesAtTail.end());
return iter->value;
}
} } // namespace JSC::DFG
#endif // ENABLE(DFG_JIT)
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