Reproduce class inliner bug from unused phi user
Change-Id: I9ca4ef177818c1eb59773b2980c4fc7d6f6716d4
diff --git a/src/test/java/com/android/tools/r8/ir/optimize/classinliner/UnusedReturnValueTest.java b/src/test/java/com/android/tools/r8/ir/optimize/classinliner/UnusedReturnValueTest.java
new file mode 100644
index 0000000..c46ae1b
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/ir/optimize/classinliner/UnusedReturnValueTest.java
@@ -0,0 +1,69 @@
+// Copyright (c) 2020, 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.classinliner;
+
+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 org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class UnusedReturnValueTest extends TestBase {
+
+ private final TestParameters parameters;
+
+ @Parameterized.Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ public UnusedReturnValueTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void test() throws Exception {
+ testForR8(parameters.getBackend())
+ .addInnerClasses(UnusedReturnValueTest.class)
+ .addKeepMainRule(TestClass.class)
+ // TODO(christofferqa): Fix class inliner.
+ .allowClassInlinerGracefulExit()
+ .enableInliningAnnotations()
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .run(parameters.getRuntime(), TestClass.class)
+ .assertSuccessWithOutputLines("Hello world!");
+ }
+
+ static class TestClass {
+
+ public static void main(String[] args) {
+ Builder builder = new Builder();
+ helper(builder);
+ System.out.println(builder.build());
+ }
+
+ @NeverInline
+ static Builder helper(Builder builder) {
+ builder.message = "Hello world!";
+ if (System.currentTimeMillis() > 0) {
+ return builder;
+ }
+ return null;
+ }
+ }
+
+ static class Builder {
+
+ String message;
+
+ String build() {
+ return message;
+ }
+ }
+}
