| /* |
| * Copyright (c) 2016, 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.lir.jtt; |
| |
| import org.junit.Assert; |
| import org.junit.Assume; |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.api.directives.GraalDirectives; |
| import org.graalvm.compiler.common.PermanentBailoutException; |
| import org.graalvm.compiler.debug.GraalError; |
| import org.graalvm.compiler.lir.LIRInstruction; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| import org.graalvm.compiler.lir.gen.LIRGeneratorTool; |
| |
| import jdk.vm.ci.code.BailoutException; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| import jdk.vm.ci.meta.Value; |
| import jdk.vm.ci.sparc.SPARC; |
| |
| /** |
| * Tests the {@link BailoutException} thrown, when trying to compile huge methods, which have branch |
| * displacements which does not fit into 19 bit signed. |
| */ |
| public class SPARCBranchBailoutTest extends LIRTest { |
| private static class BranchSpec extends LIRTestSpecification { |
| private final int n; |
| |
| BranchSpec(int n) { |
| super(); |
| this.n = n; |
| } |
| |
| @Override |
| public void generate(LIRGeneratorTool gen, Value a) { |
| gen.append(new LargeOp(n)); |
| setResult(a); |
| } |
| } |
| |
| private static final BranchSpec spec = new BranchSpec(1 << 20); |
| |
| @LIRIntrinsic |
| public static int branch(@SuppressWarnings("unused") BranchSpec s, int a) { |
| return a; |
| } |
| |
| public static int testBranch(int length) { |
| int res = 1; |
| if (length > 0) { |
| res = branch(spec, 1); |
| } else { |
| res = branch(spec, 2); |
| } |
| return GraalDirectives.opaque(res); |
| } |
| |
| @Test |
| public void testBailoutOnBranchOverflow() throws Throwable { |
| Assume.assumeTrue(getBackend().getTarget().arch instanceof SPARC); |
| ResolvedJavaMethod m = getResolvedJavaMethod("testBranch"); |
| try { |
| compile(m, null); |
| } catch (GraalError e) { |
| Assert.assertEquals(PermanentBailoutException.class, e.getCause().getClass()); |
| } |
| } |
| |
| public static class LargeOp extends LIRInstruction { |
| private static final LIRInstructionClass<LargeOp> TYPE = LIRInstructionClass.create(LargeOp.class); |
| private final int n; |
| |
| public LargeOp(int n) { |
| super(TYPE); |
| this.n = n; |
| } |
| |
| @Override |
| public void emitCode(CompilationResultBuilder crb) { |
| for (int i = 0; i < n; i++) { |
| crb.asm.emitInt(0); |
| } |
| } |
| } |
| } |