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authorLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
commit32761a6cee1d0dee366b885b7b9c777e67885688 (patch)
treed6bec92bebfb216f4126356e55518842c2f476a1 /Source/JavaScriptCore/dfg/DFGAvailabilityMap.h
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
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Diffstat (limited to 'Source/JavaScriptCore/dfg/DFGAvailabilityMap.h')
-rw-r--r--Source/JavaScriptCore/dfg/DFGAvailabilityMap.h91
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diff --git a/Source/JavaScriptCore/dfg/DFGAvailabilityMap.h b/Source/JavaScriptCore/dfg/DFGAvailabilityMap.h
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--- a/Source/JavaScriptCore/dfg/DFGAvailabilityMap.h
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-/*
- * Copyright (C) 2014, 2015 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.
- */
-
-#ifndef DFGAvailabilityMap_h
-#define DFGAvailabilityMap_h
-
-#if ENABLE(DFG_JIT)
-
-#include "DFGAvailability.h"
-#include "DFGPromotedHeapLocation.h"
-
-namespace JSC { namespace DFG {
-
-struct AvailabilityMap {
- void pruneHeap();
- void pruneByLiveness(Graph&, CodeOrigin);
- void clear();
-
- void dump(PrintStream& out) const;
-
- bool operator==(const AvailabilityMap& other) const;
-
- void merge(const AvailabilityMap& other);
-
- template<typename Functor>
- void forEachAvailability(const Functor& functor)
- {
- for (unsigned i = m_locals.size(); i--;)
- functor(m_locals[i]);
- for (auto pair : m_heap)
- functor(pair.value);
- }
-
- template<typename HasFunctor, typename AddFunctor>
- void closeOverNodes(const HasFunctor& has, const AddFunctor& add)
- {
- bool changed;
- do {
- changed = false;
- for (auto pair : m_heap) {
- if (pair.value.hasNode() && has(pair.key.base()))
- changed |= add(pair.value.node());
- }
- } while (changed);
- }
-
- template<typename HasFunctor, typename AddFunctor>
- void closeStartingWithLocal(VirtualRegister reg, const HasFunctor& has, const AddFunctor& add)
- {
- Availability availability = m_locals.operand(reg);
- if (!availability.hasNode())
- return;
-
- if (!add(availability.node()))
- return;
-
- closeOverNodes(has, add);
- }
-
- Operands<Availability> m_locals;
- HashMap<PromotedHeapLocation, Availability> m_heap;
-};
-
-} } // namespace JSC::DFG
-
-#endif // ENABLE(DFG_JIT)
-
-#endif // DFGAvailabilityMap_h
-