Add test for const canonicalization destroying prelude position
Bug: b/235319568
Change-Id: I7810ea174354d9d67611c62e7831843c051fd901
diff --git a/src/test/java/com/android/tools/r8/ir/optimize/canonicalization/ConstClassCanonicalizationMonitorTest.java b/src/test/java/com/android/tools/r8/ir/optimize/canonicalization/ConstClassCanonicalizationMonitorTest.java
new file mode 100644
index 0000000..f0901e8
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/ir/optimize/canonicalization/ConstClassCanonicalizationMonitorTest.java
@@ -0,0 +1,82 @@
+// Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.ir.optimize.canonicalization;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import com.android.tools.r8.NeverInline;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.utils.codeinspector.ClassSubject;
+import com.android.tools.r8.utils.codeinspector.InstructionSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import java.util.Optional;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+/** This is a regression test for b/235319568 */
+@RunWith(Parameterized.class)
+public class ConstClassCanonicalizationMonitorTest extends TestBase {
+
+ @Parameter() public TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withDexRuntimes().withAllApiLevels().build();
+ }
+
+ @Test
+ public void testR8() throws Exception {
+ testForR8(parameters.getBackend())
+ .addInnerClasses(getClass())
+ .setMinApi(parameters.getApiLevel())
+ .addKeepClassAndMembersRules(Main.class)
+ .enableInliningAnnotations()
+ .addKeepAttributeLineNumberTable()
+ .addKeepAttributeSourceFile()
+ .addOptionsModification(
+ options -> {
+ options.proguardMapConsumer = null;
+ })
+ .run(parameters.getRuntime(), Main.class)
+ .assertSuccessWithOutputLines("Hello World!")
+ .inspect(
+ inspector -> {
+ ClassSubject clazz = inspector.clazz(Main.class);
+ assertThat(clazz, isPresent());
+ MethodSubject testSubject = clazz.uniqueMethodWithName("test");
+ assertThat(testSubject, isPresent());
+ Optional<InstructionSubject> insertedMonitor =
+ testSubject
+ .streamInstructions()
+ .filter(InstructionSubject::isMonitorEnter)
+ .findFirst();
+ assertTrue(insertedMonitor.isPresent());
+ // TODO(b/235319568): Should not be line number 0.
+ assertEquals(0, testSubject.getLineNumberForInstruction(insertedMonitor.get()));
+ });
+ }
+
+ public static class Main {
+
+ @NeverInline
+ public static synchronized void test() {
+ synchronized (Main.class) {
+ System.out.println("Hello World!");
+ }
+ }
+
+ public static void main(String[] args) {
+ test();
+ }
+ }
+}
