Reproduce removal of live array-puts in presence of Assume instruction
Bug: b/280659987
Change-Id: I2bb641c28d6b107db2f3daefd4e7fedcf85cbde9
diff --git a/src/test/java/com/android/tools/r8/rewrite/arrays/ArrayPutsToArrayAliasTest.java b/src/test/java/com/android/tools/r8/rewrite/arrays/ArrayPutsToArrayAliasTest.java
new file mode 100644
index 0000000..eabdea5
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/rewrite/arrays/ArrayPutsToArrayAliasTest.java
@@ -0,0 +1,74 @@
+// Copyright (c) 2023, 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.rewrite.arrays;
+
+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;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class ArrayPutsToArrayAliasTest extends TestBase {
+
+ @Parameter(0)
+ public TestParameters parameters;
+
+ @Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ @Test
+ public void testD8() throws Exception {
+ parameters.assumeDexRuntime();
+ testForD8()
+ .addInnerClasses(getClass())
+ .setMinApi(parameters)
+ .run(parameters.getRuntime(), Main.class)
+ .assertSuccessWithOutputLines("Hello, world!");
+ }
+
+ @Test
+ public void testR8() throws Exception {
+ testForR8(parameters.getBackend())
+ .addInnerClasses(getClass())
+ .addKeepMainRule(Main.class)
+ .enableInliningAnnotations()
+ .setMinApi(parameters)
+ .run(parameters.getRuntime(), Main.class)
+ // TODO(b/280659987): Should succeed with "Hello, world!".
+ .assertSuccessWithOutputLines("Hellonull");
+ }
+
+ static class Main {
+
+ static String[] STRINGS;
+
+ public static void main(String[] args) {
+ init();
+ test();
+ }
+
+ @NeverInline
+ static void init() {
+ STRINGS = new String[2];
+ // Leads to an AssumeNotNull instruction in R8 during IR processing.
+ String[] strings = STRINGS;
+ strings[0] = "Hello";
+ strings[1] = ", world!";
+ }
+
+ @NeverInline
+ static void test() {
+ System.out.print(STRINGS[0]);
+ System.out.println(STRINGS[1]);
+ }
+ }
+}
