1 /* 2 * Copyright (c) 2016, 2016, 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.lir.jtt; 24 25 import org.junit.Assert; 26 import org.junit.Assume; 27 import org.junit.Test; 28 29 import org.graalvm.compiler.api.directives.GraalDirectives; 30 import org.graalvm.compiler.common.PermanentBailoutException; 31 import org.graalvm.compiler.debug.GraalError; 32 import org.graalvm.compiler.lir.LIRInstruction; 33 import org.graalvm.compiler.lir.LIRInstructionClass; 34 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 35 import org.graalvm.compiler.lir.gen.LIRGeneratorTool; 36 37 import jdk.vm.ci.code.BailoutException; 38 import jdk.vm.ci.meta.ResolvedJavaMethod; 39 import jdk.vm.ci.meta.Value; 40 import jdk.vm.ci.sparc.SPARC; 41 42 /** 43 * Tests the {@link BailoutException} thrown, when trying to compile huge methods, which have branch 44 * displacements which does not fit into 19 bit signed. 45 */ 46 public class SPARCBranchBailoutTest extends LIRTest { 47 private static class BranchSpec extends LIRTestSpecification { 48 private final int n; 49 50 BranchSpec(int n) { 51 super(); 52 this.n = n; 53 } 54 55 @Override 56 public void generate(LIRGeneratorTool gen, Value a) { 57 gen.append(new LargeOp(n)); 58 setResult(a); 59 } 60 } 61 62 private static final BranchSpec spec = new BranchSpec(1 << 20); 63 64 @LIRIntrinsic 65 public static int branch(@SuppressWarnings("unused") BranchSpec s, int a) { 66 return a; 67 } 68 69 public static int testBranch(int length) { 70 int res = 1; 71 if (length > 0) { 72 res = branch(spec, 1); 73 } else { 74 res = branch(spec, 2); 75 } 76 return GraalDirectives.opaque(res); 77 } 78 79 @Test 80 public void testBailoutOnBranchOverflow() throws Throwable { 81 Assume.assumeTrue(getBackend().getTarget().arch instanceof SPARC); 82 ResolvedJavaMethod m = getResolvedJavaMethod("testBranch"); 83 try { 84 compile(m, null); 85 } catch (GraalError e) { 86 Assert.assertEquals(PermanentBailoutException.class, e.getCause().getClass()); 87 } 88 } 89 90 public static class LargeOp extends LIRInstruction { 91 private static final LIRInstructionClass<LargeOp> TYPE = LIRInstructionClass.create(LargeOp.class); 92 private final int n; 93 94 public LargeOp(int n) { 95 super(TYPE); 96 this.n = n; 97 } 98 99 @Override 100 public void emitCode(CompilationResultBuilder crb) { 101 for (int i = 0; i < n; i++) { 102 crb.asm.emitInt(0); 103 } 104 } 105 } 106 }