diff --git a/src/test/java/com/android/tools/r8/ir/optimize/ifs/SemiTrivialPhiBranchTest.java b/src/test/java/com/android/tools/r8/ir/optimize/ifs/SemiTrivialPhiBranchTest.java
new file mode 100644
index 0000000..8b84dab
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/ir/optimize/ifs/SemiTrivialPhiBranchTest.java
@@ -0,0 +1,99 @@
+// 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.ifs;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+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.CodeInspector;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class SemiTrivialPhiBranchTest extends TestBase {
+
+  private final TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withDexRuntimes().withAllApiLevels().build();
+  }
+
+  public SemiTrivialPhiBranchTest(TestParameters parameters) {
+    this.parameters = parameters;
+  }
+
+  @Test
+  public void test() throws Exception {
+    testForR8(parameters.getBackend())
+        .addInnerClasses(SemiTrivialPhiBranchTest.class)
+        .addKeepMainRule(TestClass.class)
+        .enableInliningAnnotations()
+        .setMinApi(parameters.getApiLevel())
+        .compile()
+        .inspect(this::inspect)
+        .run(parameters.getRuntime(), TestClass.class)
+        .assertSuccessWithOutputLines("Live!");
+  }
+
+  private void inspect(CodeInspector inspector) {
+    ClassSubject testClassSubject = inspector.clazz(TestClass.class);
+    assertThat(testClassSubject, isPresent());
+    assertThat(testClassSubject.mainMethod(), isPresent());
+    assertThat(testClassSubject.uniqueMethodWithName("live"), isPresent());
+    // TODO(christofferqa): Should not be present.
+    assertThat(testClassSubject.uniqueMethodWithName("dead"), isPresent());
+  }
+
+  static class TestClass {
+
+    public static void main(String[] args) {
+      boolean x;
+      if (System.currentTimeMillis() >= 0) {
+        x = true;
+      } else {
+        x = new BooleanBox(true).get();
+      }
+      // After class inlining, the two operands to the phi become true. However, the phi does not
+      // become trivial until after canonicalization. Therefore, it is important that we run branch
+      // pruning after canonicalization.
+      if (x) {
+        live();
+      } else {
+        dead();
+      }
+    }
+
+    @NeverInline
+    static void live() {
+      System.out.println("Live!");
+    }
+
+    @NeverInline
+    static void dead() {
+      System.out.println("Dead!");
+    }
+  }
+
+  static class BooleanBox {
+
+    boolean value;
+
+    BooleanBox(boolean value) {
+      this.value = value;
+    }
+
+    boolean get() {
+      return value;
+    }
+  }
+}