1 /* 2 * Copyright (c) 2024, 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 24 import org.testng.Assert; 25 import org.testng.annotations.Test; 26 27 import java.lang.reflect.Method; 28 import java.lang.reflect.code.Block; 29 import java.lang.reflect.code.Op; 30 import java.lang.reflect.code.OpTransformer; 31 import java.lang.reflect.code.op.CoreOp; 32 import java.lang.runtime.CodeReflection; 33 import java.util.Optional; 34 import java.util.concurrent.atomic.AtomicBoolean; 35 import java.util.stream.Stream; 36 37 /* 38 * @test 39 * @run testng TestBlockIndexes 40 */ 41 42 public class TestBlockIndexes { 43 44 @CodeReflection 45 static int f(int[] a) { 46 int sum = 0; 47 for (int i = 0; i < a.length; i++) { 48 sum += a[i]; 49 } 50 return sum; 51 } 52 53 @Test 54 public void testBlockIndexes() { 55 CoreOp.FuncOp f = getFuncOp("f"); 56 f = f.transform(OpTransformer.LOWERING_TRANSFORMER); 57 assertBlockIndexes(f); 58 59 AtomicBoolean first = new AtomicBoolean(true); 60 f = f.transform((block, op) -> { 61 if (first.getAndSet(false)) { 62 // Create some blocks without predecessors 63 for (int i = 0; i < 5; i++) { 64 Block.Builder redundant = block.block(); 65 redundant.op(CoreOp._return()); 66 } 67 } 68 block.op(op); 69 return block; 70 }); 71 assertBlockIndexes(f); 72 } 73 74 static void assertBlockIndexes(CoreOp.FuncOp f) { 75 for (Block b : f.body().blocks()) { 76 Assert.assertEquals(b.index(), b.parentBody().blocks().indexOf(b)); 77 } 78 } 79 80 static CoreOp.FuncOp getFuncOp(String name) { 81 Optional<Method> om = Stream.of(TestBlockIndexes.class.getDeclaredMethods()) 82 .filter(m -> m.getName().equals(name)) 83 .findFirst(); 84 85 Method m = om.get(); 86 return m.getCodeModel().get(); 87 } 88 }