ART: Regression test for condition materialization bug

This adds a regression test previously omitted in a hotfix.

Bug: 19999189
Change-Id: I02acb935960f22028bf877cd270b04e17515068f

3 files changed, 50 insertions, 0 deletions

diff --git a/test/469-condition-materialization-regression/expected.txt b/test/469-condition-materialization-regression/expected.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/469-condition-materialization-regression/expected.txt
diff --git a/test/469-condition-materialization-regression/info.txt b/test/469-condition-materialization-regression/info.txt
new file mode 100644
index 0000000..59290f0
--- /dev/null
+++ b/test/469-condition-materialization-regression/info.txt
@@ -0,0 +1,2 @@
+Regression test for optimizing's code generator which wouldn't
+materialize a condition when used only by an environment.
diff --git a/test/469-condition-materialization-regression/src/Main.java b/test/469-condition-materialization-regression/src/Main.java
new file mode 100644
index 0000000..0be386a
--- /dev/null
+++ b/test/469-condition-materialization-regression/src/Main.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+public class Main {
+
+  // This tests a specific situation when condition ends up
+  // not getting materialized if only used by an environment.
+
+  private static Object obj;
+
+  private static int useValue(boolean value) {
+    return 42;
+  }
+
+  private static int runTest(boolean input1) {
+    boolean negation = !input1;
+    // Need the negation to appear in front of an If, and
+    // its condition to disappear. 'javac' will generate
+    // "if (!input1)" here and GVN will collapse the two
+    // conditions.
+    if (input1) {
+      // Generates an environment use of 'negation'.
+      obj = new Object();
+    }
+    // Uses 'negation' but disappears with inlining.
+    return useValue(negation);
+  }
+
+  public static void main(String[] args) throws Exception {
+    int result = runTest(true);
+    if (result != 42) {
+      throw new Error("Expected 42, got " + result);
+    }
+  }
+}