src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/RemoveValueProxyPhase.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/RemoveValueProxyPhase.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.phases.common;
+
+import org.graalvm.compiler.nodes.FrameState;
+import org.graalvm.compiler.nodes.LoopExitNode;
+import org.graalvm.compiler.nodes.ProxyNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.util.GraphUtil;
+import org.graalvm.compiler.phases.Phase;
+
+public class RemoveValueProxyPhase extends Phase {
+
+ @Override
+ protected void run(StructuredGraph graph) {
+ for (LoopExitNode exit : graph.getNodes(LoopExitNode.TYPE)) {
+ for (ProxyNode vpn : exit.proxies().snapshot()) {
+ vpn.replaceAtUsagesAndDelete(vpn.value());
+ }
+ FrameState stateAfter = exit.stateAfter();
+ if (stateAfter != null) {
+ exit.setStateAfter(null);
+ if (stateAfter.hasNoUsages()) {
+ GraphUtil.killWithUnusedFloatingInputs(stateAfter);
+ }
+ }
+ }
+ graph.setHasValueProxies(false);
+ }
+}