JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / dfg / DFGBlockWorklist.cpp

diff --git a/dfg/DFGBlockWorklist.cpp b/dfg/DFGBlockWorklist.cpp
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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 "DFGBlockWorklist.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "DFGBasicBlock.h"
+
+namespace JSC { namespace DFG {
+
+BlockWorklist::BlockWorklist()
+{
+}
+
+BlockWorklist::~BlockWorklist()
+{
+}
+
+bool BlockWorklist::push(BasicBlock* block)
+{
+    if (!m_seen.add(block))
+        return false;
+    
+    m_stack.append(block);
+    return true;
+}
+
+BasicBlock* BlockWorklist::pop()
+{
+    if (m_stack.isEmpty())
+        return nullptr;
+    
+    return m_stack.takeLast();
+}
+
+PostOrderBlockWorklist::PostOrderBlockWorklist()
+{
+}
+
+PostOrderBlockWorklist::~PostOrderBlockWorklist()
+{
+}
+
+bool PostOrderBlockWorklist::pushPre(BasicBlock* block)
+{
+    return m_worklist.push(block, PreOrder);
+}
+
+void PostOrderBlockWorklist::pushPost(BasicBlock* block)
+{
+    m_worklist.forcePush(block, PostOrder);
+}
+
+BlockWithOrder PostOrderBlockWorklist::pop()
+{
+    BlockWith<VisitOrder> result = m_worklist.pop();
+    return BlockWithOrder(result.block, result.data);
+}
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)