| /* |
| * Copyright (c) 2016, 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.hotspot.lir.test; |
| |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.core.common.LIRKind; |
| import org.graalvm.compiler.hotspot.HotSpotBackend; |
| import org.graalvm.compiler.lir.framemap.FrameMapBuilder; |
| import org.graalvm.compiler.lir.gen.LIRGeneratorTool; |
| import org.graalvm.compiler.lir.jtt.LIRTest; |
| import org.graalvm.compiler.lir.jtt.LIRTestSpecification; |
| import org.graalvm.compiler.nodes.SafepointNode; |
| import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration; |
| import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; |
| import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin; |
| |
| import jdk.vm.ci.code.BailoutException; |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.JavaConstant; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| public class ExceedMaxOopMapStackOffset extends LIRTest { |
| |
| /** |
| * Allocate lots of stacks slots and initialize them with a constant. |
| */ |
| private static class WriteStackSlotsSpec extends LIRTestSpecification { |
| private final JavaConstant constant; |
| |
| WriteStackSlotsSpec(JavaConstant constant) { |
| this.constant = constant; |
| } |
| |
| @Override |
| public void generate(LIRGeneratorTool gen) { |
| FrameMapBuilder frameMapBuilder = gen.getResult().getFrameMapBuilder(); |
| LIRKind lirKind = LIRKind.reference(gen.target().arch.getPlatformKind(constant.getJavaKind())); |
| // create slots |
| for (int i = 0; i < slots.length; i++) { |
| AllocatableValue src = gen.emitLoadConstant(lirKind, constant); |
| slots[i] = frameMapBuilder.allocateSpillSlot(lirKind); |
| gen.emitMove(slots[i], src); |
| } |
| } |
| } |
| |
| /** |
| * Read stacks slots and move their content into a blackhole. |
| */ |
| private static class ReadStackSlotsSpec extends LIRTestSpecification { |
| |
| ReadStackSlotsSpec() { |
| } |
| |
| @Override |
| public void generate(LIRGeneratorTool gen) { |
| for (int i = 0; i < slots.length; i++) { |
| gen.emitBlackhole(gen.emitMove(slots[i])); |
| } |
| } |
| } |
| |
| @Override |
| protected GraphBuilderConfiguration editGraphBuilderConfiguration(GraphBuilderConfiguration conf) { |
| InvocationPlugin safepointPlugin = new InvocationPlugin() { |
| @Override |
| public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver) { |
| b.add(new SafepointNode()); |
| return true; |
| } |
| }; |
| conf.getPlugins().getInvocationPlugins().register(safepointPlugin, getClass(), "safepoint"); |
| return super.editGraphBuilderConfiguration(conf); |
| } |
| |
| /* |
| * Safepoint Snippet |
| */ |
| private static void safepoint() { |
| } |
| |
| private static AllocatableValue[] slots; |
| |
| private static final LIRTestSpecification readStackObjects = new ReadStackSlotsSpec(); |
| |
| @SuppressWarnings("unused") |
| @LIRIntrinsic |
| public static void instrinsic(LIRTestSpecification spec) { |
| } |
| |
| private static final LIRTestSpecification writeStackObjects = new WriteStackSlotsSpec(JavaConstant.NULL_POINTER); |
| |
| public void testStackObjects() { |
| instrinsic(writeStackObjects); |
| safepoint(); |
| instrinsic(readStackObjects); |
| } |
| |
| @Test |
| public void runStackObjects() throws Throwable { |
| int max = ((HotSpotBackend) getBackend()).getRuntime().getVMConfig().maxOopMapStackOffset; |
| if (max == Integer.MAX_VALUE) { |
| max = 16 * 1024 - 64; |
| } |
| try { |
| int numSlots = (max / 8) + 1; |
| slots = new AllocatableValue[numSlots]; |
| runTest("testStackObjects"); |
| } catch (BailoutException e) { |
| return; |
| } |
| fail("Expected exception BailoutException wasn't thrown"); |
| } |
| } |