JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / dfg / DFGVariableEventStream.h

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+/*
+ * Copyright (C) 2012 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 DFGVariableEventStream_h
+#define DFGVariableEventStream_h
+
+#include <wtf/Platform.h>
+
+#if ENABLE(DFG_JIT)
+
+#include "DFGCommon.h"
+#include "DFGMinifiedGraph.h"
+#include "DFGVariableEvent.h"
+#include "Operands.h"
+#include <wtf/Vector.h>
+
+namespace JSC { namespace DFG {
+
+class VariableEventStream : public Vector<VariableEvent> {
+public:
+    void appendAndLog(const VariableEvent& event)
+    {
+#if DFG_ENABLE(DEBUG_VERBOSE)
+        logEvent(event);
+#endif
+        append(event);
+    }
+    
+    void reconstruct(
+        CodeBlock*, CodeOrigin, MinifiedGraph&,
+        unsigned index, Operands<ValueRecovery>&) const;
+
+private:
+    bool tryToSetConstantRecovery(ValueRecovery&, CodeBlock*, MinifiedNode*) const;
+    
+    void logEvent(const VariableEvent&);
+};
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+
+#endif // DFGVariableEventStream_h
+