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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/b3/B3BreakCriticalEdges.cpp
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/b3/B3BreakCriticalEdges.cpp')
-rw-r--r--Source/JavaScriptCore/b3/B3BreakCriticalEdges.cpp68
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diff --git a/Source/JavaScriptCore/b3/B3BreakCriticalEdges.cpp b/Source/JavaScriptCore/b3/B3BreakCriticalEdges.cpp
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--- a/Source/JavaScriptCore/b3/B3BreakCriticalEdges.cpp
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-/*
- * Copyright (C) 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 "B3BreakCriticalEdges.h"
-
-#if ENABLE(B3_JIT)
-
-#include "B3BasicBlockInlines.h"
-#include "B3BlockInsertionSet.h"
-#include "B3ControlValue.h"
-#include "B3ProcedureInlines.h"
-#include "B3ValueInlines.h"
-
-namespace JSC { namespace B3 {
-
-void breakCriticalEdges(Procedure& proc)
-{
- BlockInsertionSet insertionSet(proc);
-
- for (BasicBlock* block : proc) {
- if (block->numSuccessors() <= 1)
- continue;
-
- for (BasicBlock*& successor : block->successorBlocks()) {
- if (successor->numPredecessors() <= 1)
- continue;
-
- BasicBlock* pad =
- insertionSet.insertBefore(successor, successor->frequency());
- pad->appendNew<ControlValue>(
- proc, Jump, successor->at(0)->origin(), FrequentedBlock(successor));
- pad->addPredecessor(block);
- successor->replacePredecessor(block, pad);
- successor = pad;
- }
- }
-
- insertionSet.execute();
- proc.invalidateCFG();
-}
-
-} } // namespace JSC::B3
-
-#endif // ENABLE(B3_JIT)
-