| /* |
| * Copyright (c) 2013, 2013, 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.nodes; |
| |
| import org.graalvm.compiler.nodes.spi.NodeWithState; |
| |
| /** |
| * Interface implemented by nodes which may need {@linkplain FrameState deoptimization information}. |
| */ |
| public interface DeoptimizingNode extends NodeWithState { |
| |
| /** |
| * Determines if this node needs deoptimization information. |
| */ |
| boolean canDeoptimize(); |
| |
| /** |
| * Interface for nodes that need a {@link FrameState} for deoptimizing to a point before their |
| * execution. |
| */ |
| public interface DeoptBefore extends DeoptimizingNode { |
| |
| /** |
| * Sets the {@link FrameState} describing the program state before the execution of this |
| * node. |
| */ |
| void setStateBefore(FrameState state); |
| |
| FrameState stateBefore(); |
| } |
| |
| /** |
| * Interface for nodes that need a {@link FrameState} for deoptimizing to a point after their |
| * execution. |
| */ |
| public interface DeoptAfter extends DeoptimizingNode, StateSplit { |
| } |
| |
| /** |
| * Interface for nodes that need a special {@link FrameState} for deoptimizing during their |
| * execution (e.g. {@link Invoke}). |
| */ |
| public interface DeoptDuring extends DeoptimizingNode, StateSplit { |
| |
| FrameState stateDuring(); |
| |
| /** |
| * Sets the {@link FrameState} describing the program state during the execution of this |
| * node. |
| */ |
| void setStateDuring(FrameState state); |
| |
| /** |
| * Compute the {@link FrameState} describing the program state during the execution of this |
| * node from an input {@link FrameState} describing the program state after finishing the |
| * execution of this node. |
| */ |
| void computeStateDuring(FrameState stateAfter); |
| } |
| } |