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 /* 25 * @test 26 * @run testng TestTransitiveInvokeModule 27 */ 28 29 import org.testng.Assert; 30 import org.testng.annotations.Test; 31 32 import java.lang.invoke.MethodHandles; 33 import java.lang.reflect.Executable; 34 import java.lang.reflect.Method; 35 import java.lang.reflect.code.OpTransformer; 36 import java.lang.reflect.code.analysis.SSA; 37 import java.lang.reflect.code.interpreter.Interpreter; 38 import java.lang.reflect.code.op.CoreOp; 39 import java.lang.reflect.code.type.MethodRef; 40 import java.lang.runtime.CodeReflection; 41 import java.util.*; 42 import java.util.stream.Stream; 43 44 public class TestTransitiveInvokeModule { 45 46 @CodeReflection 47 static void m(int i, List<Integer> l) { 48 if (i < 0) { 49 return; 50 } 51 52 n(i - 1, l); 53 } 54 55 @CodeReflection 56 static void n(int i, List<Integer> l) { 57 l.add(i); 58 m(i - 1, l); 59 } 60 61 @Test 62 public void test() { 63 Optional<Method> om = Stream.of(TestTransitiveInvokeModule.class.getDeclaredMethods()) 64 .filter(m -> m.getName().equals("m")) 65 .findFirst(); 66 67 CoreOp.ModuleOp module = createTransitiveInvokeModule(MethodHandles.lookup(), om.get()); 68 System.out.println(module.toText()); 69 module = module.transform(OpTransformer.LOWERING_TRANSFORMER); 70 System.out.println(module.toText()); 71 module = SSA.transform(module); 72 System.out.println(module.toText()); 73 74 module.functionTable().forEach((s, funcOp) -> { 75 System.out.println(s + " -> " + funcOp); 76 }); 77 78 List<Integer> r = new ArrayList<>(); 79 Interpreter.invoke(module.functionTable().firstEntry().getValue(), 10, r); 80 Assert.assertEquals(r, List.of(9, 7, 5, 3, 1, -1)); 81 } 82 83 static CoreOp.ModuleOp createTransitiveInvokeModule(MethodHandles.Lookup l, 84 Method m) { 85 Optional<CoreOp.FuncOp> codeModel = m.getCodeModel(); 86 if (codeModel.isPresent()) { 87 return createTransitiveInvokeModule(l, MethodRef.method(m), codeModel.get()); 88 } else { 89 return CoreOp.module(List.of()); 90 } 91 } 92 93 static CoreOp.ModuleOp createTransitiveInvokeModule(MethodHandles.Lookup l, 94 MethodRef entryRef, CoreOp.FuncOp entry) { 95 LinkedHashSet<MethodRef> funcsVisited = new LinkedHashSet<>(); 96 List<CoreOp.FuncOp> funcs = new ArrayList<>(); 97 98 record RefAndFunc(MethodRef r, CoreOp.FuncOp f) { 99 } 100 Deque<RefAndFunc> work = new ArrayDeque<>(); 101 work.push(new RefAndFunc(entryRef, entry)); 102 while (!work.isEmpty()) { 103 RefAndFunc rf = work.pop(); 104 if (!funcsVisited.add(rf.r)) { 105 continue; 106 } 107 108 CoreOp.FuncOp tf = rf.f.transform(rf.r.toString(), (block, op) -> { 109 if (op instanceof CoreOp.InvokeOp iop) { 110 MethodRef r = iop.invokeDescriptor(); 111 Method em = null; 112 try { 113 em = r.resolveToMethod(l); 114 } catch (ReflectiveOperationException _) { 115 } 116 if (em instanceof Method m) { 117 Optional<CoreOp.FuncOp> f = m.getCodeModel(); 118 if (f.isPresent()) { 119 RefAndFunc call = new RefAndFunc(r, f.get()); 120 // Place model on work queue 121 work.push(call); 122 123 // Replace invocation with function call 124 block.op(CoreOp.funcCall( 125 call.r.toString(), 126 call.f.invokableType(), 127 block.context().getValues(iop.operands()))); 128 return block; 129 } 130 } 131 } 132 block.op(op); 133 return block; 134 }); 135 funcs.add(tf); 136 } 137 138 return CoreOp.module(funcs); 139 } 140 }