Test for non-linear control flow in redundant field load elimination
Bug: 152280793
Change-Id: I9389a8efdca57ba25bd34c7ff79334ea56243998
diff --git a/src/test/java/com/android/tools/r8/ir/optimize/redundantfieldloadelimination/RedundantFieldLoadEliminationMeetTest.java b/src/test/java/com/android/tools/r8/ir/optimize/redundantfieldloadelimination/RedundantFieldLoadEliminationMeetTest.java
new file mode 100644
index 0000000..4ee4380
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/ir/optimize/redundantfieldloadelimination/RedundantFieldLoadEliminationMeetTest.java
@@ -0,0 +1,65 @@
+package com.android.tools.r8.ir.optimize.redundantfieldloadelimination;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+
+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.CodeInspector;
+import com.android.tools.r8.utils.codeinspector.InstructionSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import java.io.PrintStream;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class RedundantFieldLoadEliminationMeetTest extends TestBase {
+
+ private final TestParameters parameters;
+
+ @Parameterized.Parameters(name = "{0}")
+ public static TestParametersCollection data() {
+ return getTestParameters().withAllRuntimesAndApiLevels().build();
+ }
+
+ public RedundantFieldLoadEliminationMeetTest(TestParameters parameters) {
+ this.parameters = parameters;
+ }
+
+ @Test
+ public void test() throws Exception {
+ testForR8(parameters.getBackend())
+ .addInnerClasses(RedundantFieldLoadEliminationMeetTest.class)
+ .addKeepMainRule(TestClass.class)
+ .setMinApi(parameters.getApiLevel())
+ .compile()
+ .inspect(this::inspect)
+ .run(parameters.getRuntime(), TestClass.class)
+ .assertSuccessWithOutputLines("Hello world!");
+ }
+
+ private void inspect(CodeInspector inspector) {
+ ClassSubject testClassSubject = inspector.clazz(TestClass.class);
+ assertThat(testClassSubject, isPresent());
+
+ MethodSubject mainMethodSubject = testClassSubject.mainMethod();
+ assertThat(mainMethodSubject, isPresent());
+ // TODO(b/152280793): Should be 1.
+ assertEquals(
+ 2, mainMethodSubject.streamInstructions().filter(InstructionSubject::isStaticGet).count());
+ }
+
+ static class TestClass {
+
+ public static void main(String[] args) {
+ boolean unknown = System.currentTimeMillis() > 0;
+ PrintStream out = System.out;
+ String message = unknown ? "Hello world!" : "Unexpected";
+ System.out.println(message);
+ }
+ }
+}
