1 files changed, 64 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/dfg/DFGPhiChildren.cpp b/Source/JavaScriptCore/dfg/DFGPhiChildren.cpp
new file mode 100644
index 000000000..de078d088
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+++ b/Source/JavaScriptCore/dfg/DFGPhiChildren.cpp
@@ -0,0 +1,64 @@
+/*
+ * 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 "DFGPhiChildren.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "DFGGraph.h"
+
+namespace JSC { namespace DFG {
+
+PhiChildren::PhiChildren()
+{
+}
+
+PhiChildren::PhiChildren(Graph& graph)
+{
+    for (BasicBlock* block : graph.blocksInNaturalOrder()) {
+        for (Node* node : *block) {
+            if (node->op() != Upsilon)
+                continue;
+            
+            m_children.add(node->phi(), List()).iterator->value.append(node);
+        }
+    }
+}
+
+PhiChildren::~PhiChildren()
+{
+}
+
+const PhiChildren::List& PhiChildren::upsilonsOf(Node* node) const
+{
+    ASSERT(node->op() == Phi);
+    return m_children.find(node)->value;
+}
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+