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/*
* Copyright (C) 2014 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 "DFGPrePostNumbering.h"
#if ENABLE(DFG_JIT)
#include "DFGBlockMapInlines.h"
#include "DFGBlockWorklist.h"
#include "DFGGraph.h"
namespace JSC { namespace DFG {
PrePostNumbering::PrePostNumbering(Graph& graph)
{
m_map = BlockMap<Numbering>(graph);
PostOrderBlockWorklist worklist;
worklist.push(graph.block(0));
unsigned nextPreNumber = 0;
unsigned nextPostNumber = 0;
while (BlockWithOrder item = worklist.pop()) {
switch (item.order) {
case VisitOrder::Pre:
m_map[item.node].m_preNumber = nextPreNumber++;
worklist.pushPost(item.node);
for (BasicBlock* successor : item.node->successors())
worklist.push(successor);
break;
case VisitOrder::Post:
m_map[item.node].m_postNumber = nextPostNumber++;
break;
}
}
}
PrePostNumbering::~PrePostNumbering() { }
} } // namespace JSC::DFG
namespace WTF {
using namespace JSC::DFG;
void printInternal(PrintStream& out, EdgeKind kind)
{
switch (kind) {
case ForwardEdge:
out.print("ForwardEdge");
return;
case CrossEdge:
out.print("CrossEdge");
return;
case BackEdge:
out.print("BackEdge");
return;
}
RELEASE_ASSERT_NOT_REACHED();
}
} // namespace WTF
#endif // ENABLE(DFG_JIT)
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