--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.jtt/src/org/graalvm/compiler/lir/jtt/SPARCBranchBailoutTest.java 2017-02-15 17:05:06.053640726 -0800 @@ -0,0 +1,106 @@ +/* + * 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 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); + } + } + } +}