1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_3; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2; 27 28 import org.graalvm.compiler.core.common.type.StampFactory; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 31 import org.graalvm.compiler.hotspot.stubs.DeoptimizationStub; 32 import org.graalvm.compiler.nodeinfo.NodeInfo; 33 import org.graalvm.compiler.nodes.FixedWithNextNode; 34 import org.graalvm.compiler.nodes.ValueNode; 35 import org.graalvm.compiler.nodes.spi.LIRLowerable; 36 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 37 import org.graalvm.compiler.word.Word; 38 39 import jdk.vm.ci.meta.Value; 40 41 /** 42 * Emits code to leave (pop) the current low-level stack frame which is being deoptimized. This node 43 * is only used in {@link DeoptimizationStub}. 44 */ 45 @NodeInfo(cycles = CYCLES_3, size = SIZE_2) 46 public final class LeaveDeoptimizedStackFrameNode extends FixedWithNextNode implements LIRLowerable { 47 48 public static final NodeClass<LeaveDeoptimizedStackFrameNode> TYPE = NodeClass.create(LeaveDeoptimizedStackFrameNode.class); 49 @Input ValueNode frameSize; 50 @Input ValueNode initialInfo; 51 52 public LeaveDeoptimizedStackFrameNode(ValueNode frameSize, ValueNode initialInfo) { 53 super(TYPE, StampFactory.forVoid()); 54 this.frameSize = frameSize; 55 this.initialInfo = initialInfo; 56 } 57 58 @Override 59 public void generate(NodeLIRBuilderTool gen) { 60 Value frameSizeValue = gen.operand(frameSize); 61 Value initialInfoValue = gen.operand(initialInfo); 62 ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLeaveDeoptimizedStackFrame(frameSizeValue, initialInfoValue); 63 } 64 65 @NodeIntrinsic 66 public static native void leaveDeoptimizedStackFrame(int frameSize, Word initialInfo); 67 }