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/*
* Copyright (C) 2013-2015 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 "DFGClobberize.h"
#if ENABLE(DFG_JIT)
#include "JSCInlines.h"
namespace JSC { namespace DFG {
bool doesWrites(Graph& graph, Node* node)
{
NoOpClobberize noOp;
CheckClobberize addWrite;
clobberize(graph, node, noOp, addWrite, noOp);
return addWrite.result();
}
bool accessesOverlap(Graph& graph, Node* node, AbstractHeap heap)
{
NoOpClobberize noOp;
AbstractHeapOverlaps addAccess(heap);
clobberize(graph, node, addAccess, addAccess, noOp);
return addAccess.result();
}
bool writesOverlap(Graph& graph, Node* node, AbstractHeap heap)
{
NoOpClobberize noOp;
AbstractHeapOverlaps addWrite(heap);
clobberize(graph, node, noOp, addWrite, noOp);
return addWrite.result();
}
bool clobbersHeap(Graph& graph, Node* node)
{
bool result = false;
clobberize(
graph, node, NoOpClobberize(),
[&] (AbstractHeap heap) {
switch (heap.kind()) {
case World:
case Heap:
result = true;
break;
default:
break;
}
},
NoOpClobberize());
return result;
}
} } // namespace JSC::DFG
#endif // ENABLE(DFG_JIT)
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