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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/DFGCleanUpPhase.cpp
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/dfg/DFGCleanUpPhase.cpp')
-rw-r--r--Source/JavaScriptCore/dfg/DFGCleanUpPhase.cpp92
1 files changed, 0 insertions, 92 deletions
diff --git a/Source/JavaScriptCore/dfg/DFGCleanUpPhase.cpp b/Source/JavaScriptCore/dfg/DFGCleanUpPhase.cpp
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--- a/Source/JavaScriptCore/dfg/DFGCleanUpPhase.cpp
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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.
- */
-
-#include "config.h"
-#include "DFGCleanUpPhase.h"
-
-#if ENABLE(DFG_JIT)
-
-#include "DFGGraph.h"
-#include "DFGInsertionSet.h"
-#include "DFGPhase.h"
-#include "DFGPredictionPropagationPhase.h"
-#include "DFGVariableAccessDataDump.h"
-#include "JSCInlines.h"
-
-namespace JSC { namespace DFG {
-
-class CleanUpPhase : public Phase {
-public:
- CleanUpPhase(Graph& graph)
- : Phase(graph, "clean up")
- {
- }
-
- bool run()
- {
- bool changed = false;
-
- for (BasicBlock* block : m_graph.blocksInNaturalOrder()) {
- unsigned sourceIndex = 0;
- unsigned targetIndex = 0;
- while (sourceIndex < block->size()) {
- Node* node = block->at(sourceIndex++);
- bool kill = false;
-
- if (node->op() == Check)
- node->children = node->children.justChecks();
-
- switch (node->op()) {
- case Phantom:
- case Check:
- if (node->children.isEmpty())
- kill = true;
- break;
- default:
- break;
- }
-
- if (kill)
- m_graph.m_allocator.free(node);
- else
- block->at(targetIndex++) = node;
- }
- block->resize(targetIndex);
- }
-
- return changed;
- }
-};
-
-bool performCleanUp(Graph& graph)
-{
- SamplingRegion samplingRegion("DFG Clean Up Phase");
- return runPhase<CleanUpPhase>(graph);
-}
-
-} } // namespace JSC::DFG
-
-#endif // ENABLE(DFG_JIT)
-