1 /*
2 * Copyright (c) 2025, 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 jdk.incubator.code.*;
25 import jdk.incubator.code.analysis.NormalizeBlocksTransformer;
26 import jdk.incubator.code.analysis.SSA;
27 import jdk.incubator.code.dialect.core.CoreOp;
28 import jdk.incubator.code.dialect.java.JavaOp;
29 import jdk.incubator.code.extern.OpParser;
30 import jdk.incubator.code.extern.OpWriter;
31
32 import java.io.StringWriter;
33 import java.lang.invoke.MethodHandles;
34 import java.lang.reflect.Member;
35 import java.lang.reflect.Method;
36 import java.util.HashSet;
37 import java.util.function.Predicate;
38
39 public class CodeReflectionTester {
40
41 public static void main(String[] args) throws ReflectiveOperationException {
42 if (args.length != 1) {
43 System.err.println("Usage: CodeReflectionTester <classname>");
44 System.exit(1);
45 }
46 Class<?> clazz = Class.forName(args[0]);
47
48 Method lookupMethod = clazz.getMethod("lookup");
49 MethodHandles.Lookup lookup = (MethodHandles.Lookup) lookupMethod.invoke(null);
50
51 Method opConstantsMethod = clazz.getMethod("opConstants");
52 @SuppressWarnings("unchecked")
53 Predicate<Op> opConstants = (Predicate<Op>) opConstantsMethod.invoke(null);
54
55 for (Method m : clazz.getDeclaredMethods()) {
56 check(lookup, opConstants, m);
57 }
58 }
59
60 static void check(MethodHandles.Lookup l, Predicate<Op> opConstants, Method method) throws ReflectiveOperationException {
61 if (!method.isAnnotationPresent(CodeReflection.class)) {
62 return;
63 }
64
65 for (EvaluatedModel em : getModels(method)) {
66 CoreOp.FuncOp f = Op.ofMethod(method).orElseThrow(() ->
67 new AssertionError("No code model for reflective method"));
68 f = evaluate(l, opConstants, f, em.ssa());
69
70 String actual = canonicalizeModel(method, f);
71 System.out.println(actual);
72 String expected = canonicalizeModel(method, em.value());
73 if (!actual.equals(expected)) {
74 throw new AssertionError(String.format("Bad code model\nFound:\n%s\n\nExpected:\n%s", actual, expected));
75 }
76 }
77 }
78
79 static EvaluatedModel[] getModels(Method method) {
80 EvaluatedModels ems = method.getAnnotation(EvaluatedModels.class);
81 if (ems != null) {
82 return ems.value();
83 }
84
85 EvaluatedModel em = method.getAnnotation(EvaluatedModel.class);
86 if (em != null) {
87 return new EvaluatedModel[] { em };
88 }
89
90 throw new AssertionError("No @EvaluatedModel annotation found on reflective method");
91 }
92
93 static CoreOp.FuncOp evaluate(MethodHandles.Lookup l, Predicate<Op> opConstants, CoreOp.FuncOp f, boolean ssa) {
94 f = f.transform(OpTransformer.LOWERING_TRANSFORMER);
95
96 if (ssa) {
97 f = SSA.transform(f);
98 }
99
100 f = PartialEvaluator.evaluate(l, opConstants, new HashSet<>(), f);
101
102 return cleanUp(f);
103 }
104
105 static CoreOp.FuncOp cleanUp(CoreOp.FuncOp f) {
106 return removeUnusedOps(NormalizeBlocksTransformer.transform(f));
107 }
108
109 static CoreOp.FuncOp removeUnusedOps(CoreOp.FuncOp f) {
110 Predicate<Op> unused = op -> (op instanceof Op.Pure || op instanceof CoreOp.VarOp) &&
111 op.result().uses().isEmpty();
112 while (f.elements().skip(1).anyMatch(ce -> ce instanceof Op op && unused.test(op))) {
113 f = f.transform((block, op) -> {
114 if (!unused.test(op)) {
115 block.op(op);
116 }
117 return block;
118 });
119 }
120 return f;
121 }
122
123 // serializes dropping location information, parses, and then serializes, dropping location information
124 static String canonicalizeModel(Member m, Op o) {
125 return canonicalizeModel(m, serialize(o));
126 }
127
128 // parses, and then serializes, dropping location information
129 static String canonicalizeModel(Member m, String d) {
130 Op o;
131 try {
132 o = OpParser.fromString(JavaOp.JAVA_DIALECT_FACTORY, d).get(0);
133 } catch (Exception e) {
134 throw new IllegalStateException(m.toString(), e);
135 }
136 return serialize(o);
137 }
138
139 // serializes, dropping location information
140 static String serialize(Op o) {
141 StringWriter w = new StringWriter();
142 OpWriter.writeTo(w, o, OpWriter.LocationOption.DROP_LOCATION);
143 return w.toString();
144 }
145 }