Test on (in)variant static and instance field arrays.

Rationale:
Ensure upcoming improved side effects analysis
results in valid optimizations only.

Bug: 22538329
Change-Id: I87e699853e914a0e42adfd1c4e4f9789781b65df

3 files changed, 615 insertions, 0 deletions

diff --git a/test/525-arrays-and-fields/expected.txt b/test/525-arrays-and-fields/expected.txt
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/525-arrays-and-fields/expected.txt
diff --git a/test/525-arrays-and-fields/info.txt b/test/525-arrays-and-fields/info.txt
new file mode 100644
index 0000000000..3e16abf204
--- /dev/null
+++ b/test/525-arrays-and-fields/info.txt
@@ -0,0 +1 @@
+Test on (in)variant static and instance field and array references in loops.
diff --git a/test/525-arrays-and-fields/src/Main.java b/test/525-arrays-and-fields/src/Main.java
new file mode 100644
index 0000000000..cd976b2458
--- /dev/null
+++ b/test/525-arrays-and-fields/src/Main.java
@@ -0,0 +1,614 @@
+/*
+ * 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.
+ */
+
+//
+// Test on (in)variant static and instance field and array references in loops.
+//
+public class Main {
+
+  private static Object anObject = new Object();
+  private static Object anotherObject = new Object();
+
+  //
+  // Static fields.
+  //
+
+  private static boolean sZ;
+  private static byte sB;
+  private static char sC;
+  private static short sS;
+  private static int sI;
+  private static long sJ;
+  private static float sF;
+  private static double sD;
+  private static Object sL;
+
+  //
+  // Static arrays.
+  //
+
+  private static boolean[] sArrZ;
+  private static byte[] sArrB;
+  private static char[] sArrC;
+  private static short[] sArrS;
+  private static int[] sArrI;
+  private static long[] sArrJ;
+  private static float[] sArrF;
+  private static double[] sArrD;
+  private static Object[] sArrL;
+
+  //
+  // Instance fields.
+  //
+
+  private boolean mZ;
+  private byte mB;
+  private char mC;
+  private short mS;
+  private int mI;
+  private long mJ;
+  private float mF;
+  private double mD;
+  private Object mL;
+
+  //
+  // Instance arrays.
+  //
+
+  private boolean[] mArrZ;
+  private byte[] mArrB;
+  private char[] mArrC;
+  private short[] mArrS;
+  private int[] mArrI;
+  private long[] mArrJ;
+  private float[] mArrF;
+  private double[] mArrD;
+  private Object[] mArrL;
+
+  //
+  // Loops on static arrays with invariant static field references.
+  //
+
+  private static void SInvLoopZ() {
+    for (int i = 0; i < sArrZ.length; i++) {
+      sArrZ[i] = sZ;
+    }
+  }
+
+  private static void SInvLoopB() {
+    for (int i = 0; i < sArrB.length; i++) {
+      sArrB[i] = sB;
+    }
+  }
+
+  private static void SInvLoopC() {
+    for (int i = 0; i < sArrC.length; i++) {
+      sArrC[i] = sC;
+    }
+  }
+
+  private static void SInvLoopS() {
+    for (int i = 0; i < sArrS.length; i++) {
+      sArrS[i] = sS;
+    }
+  }
+
+  private static void SInvLoopI() {
+    for (int i = 0; i < sArrI.length; i++) {
+      sArrI[i] = sI;
+    }
+  }
+
+  private static void SInvLoopJ() {
+    for (int i = 0; i < sArrJ.length; i++) {
+      sArrJ[i] = sJ;
+    }
+  }
+
+  private static void SInvLoopF() {
+    for (int i = 0; i < sArrF.length; i++) {
+      sArrF[i] = sF;
+    }
+  }
+
+  private static void SInvLoopD() {
+    for (int i = 0; i < sArrD.length; i++) {
+      sArrD[i] = sD;
+    }
+  }
+
+  private static void SInvLoopL() {
+    for (int i = 0; i < sArrL.length; i++) {
+      sArrL[i] = sL;
+    }
+  }
+
+  //
+  // Loops on static arrays with variant static field references.
+  //
+
+  private static void SVarLoopZ() {
+    for (int i = 0; i < sArrZ.length; i++) {
+      sArrZ[i] = sZ;
+      if (i == 10)
+        sZ = !sZ;
+    }
+  }
+
+  private static void SVarLoopB() {
+    for (int i = 0; i < sArrB.length; i++) {
+      sArrB[i] = sB;
+      if (i == 10)
+        sB++;
+    }
+  }
+
+  private static void SVarLoopC() {
+    for (int i = 0; i < sArrC.length; i++) {
+      sArrC[i] = sC;
+      if (i == 10)
+        sC++;
+    }
+  }
+
+  private static void SVarLoopS() {
+    for (int i = 0; i < sArrS.length; i++) {
+      sArrS[i] = sS;
+      if (i == 10)
+        sS++;
+    }
+  }
+
+  private static void SVarLoopI() {
+    for (int i = 0; i < sArrI.length; i++) {
+      sArrI[i] = sI;
+      if (i == 10)
+        sI++;
+    }
+  }
+
+  private static void SVarLoopJ() {
+    for (int i = 0; i < sArrJ.length; i++) {
+      sArrJ[i] = sJ;
+      if (i == 10)
+        sJ++;
+    }
+  }
+
+  private static void SVarLoopF() {
+    for (int i = 0; i < sArrF.length; i++) {
+      sArrF[i] = sF;
+      if (i == 10)
+        sF++;
+    }
+  }
+
+  private static void SVarLoopD() {
+    for (int i = 0; i < sArrD.length; i++) {
+      sArrD[i] = sD;
+      if (i == 10)
+        sD++;
+    }
+  }
+
+  private static void SVarLoopL() {
+    for (int i = 0; i < sArrL.length; i++) {
+      sArrL[i] = sL;
+      if (i == 10)
+        sL = anotherObject;
+    }
+  }
+
+  //
+  // Loops on instance arrays with invariant instance field references.
+  //
+
+  private void InvLoopZ() {
+    for (int i = 0; i < mArrZ.length; i++) {
+      mArrZ[i] = mZ;
+    }
+  }
+
+  private void InvLoopB() {
+    for (int i = 0; i < mArrB.length; i++) {
+      mArrB[i] = mB;
+    }
+  }
+
+  private void InvLoopC() {
+    for (int i = 0; i < mArrC.length; i++) {
+      mArrC[i] = mC;
+    }
+  }
+
+  private void InvLoopS() {
+    for (int i = 0; i < mArrS.length; i++) {
+      mArrS[i] = mS;
+    }
+  }
+
+  private void InvLoopI() {
+    for (int i = 0; i < mArrI.length; i++) {
+      mArrI[i] = mI;
+    }
+  }
+
+  private void InvLoopJ() {
+    for (int i = 0; i < mArrJ.length; i++) {
+      mArrJ[i] = mJ;
+    }
+  }
+
+  private void InvLoopF() {
+    for (int i = 0; i < mArrF.length; i++) {
+      mArrF[i] = mF;
+    }
+  }
+
+  private void InvLoopD() {
+    for (int i = 0; i < mArrD.length; i++) {
+      mArrD[i] = mD;
+    }
+  }
+
+  private void InvLoopL() {
+    for (int i = 0; i < mArrL.length; i++) {
+      mArrL[i] = mL;
+    }
+  }
+
+  //
+  // Loops on instance arrays with variant instance field references.
+  //
+
+  private void VarLoopZ() {
+    for (int i = 0; i < mArrZ.length; i++) {
+      mArrZ[i] = mZ;
+      if (i == 10)
+        mZ = !mZ;
+    }
+  }
+
+  private void VarLoopB() {
+    for (int i = 0; i < mArrB.length; i++) {
+      mArrB[i] = mB;
+      if (i == 10)
+        mB++;
+    }
+  }
+
+  private void VarLoopC() {
+    for (int i = 0; i < mArrC.length; i++) {
+      mArrC[i] = mC;
+      if (i == 10)
+        mC++;
+    }
+  }
+
+  private void VarLoopS() {
+    for (int i = 0; i < mArrS.length; i++) {
+      mArrS[i] = mS;
+      if (i == 10)
+        mS++;
+    }
+  }
+
+  private void VarLoopI() {
+    for (int i = 0; i < mArrI.length; i++) {
+      mArrI[i] = mI;
+      if (i == 10)
+        mI++;
+    }
+  }
+
+  private void VarLoopJ() {
+    for (int i = 0; i < mArrJ.length; i++) {
+      mArrJ[i] = mJ;
+      if (i == 10)
+        mJ++;
+    }
+  }
+
+  private void VarLoopF() {
+    for (int i = 0; i < mArrF.length; i++) {
+      mArrF[i] = mF;
+      if (i == 10)
+        mF++;
+    }
+  }
+
+  private void VarLoopD() {
+    for (int i = 0; i < mArrD.length; i++) {
+      mArrD[i] = mD;
+      if (i == 10)
+        mD++;
+    }
+  }
+
+  private void VarLoopL() {
+    for (int i = 0; i < mArrL.length; i++) {
+      mArrL[i] = mL;
+      if (i == 10)
+        mL = anotherObject;
+    }
+  }
+  //
+  // Driver and testers.
+  //
+
+  public static void main(String[] args) {
+    DoStaticTests();
+    new Main().DoInstanceTests();
+  }
+
+  private static void DoStaticTests() {
+    // Type Z.
+    sZ = true;
+    sArrZ = new boolean[100];
+    SInvLoopZ();
+    for (int i = 0; i < sArrZ.length; i++) {
+      expectEquals(true, sArrZ[i]);
+    }
+    SVarLoopZ();
+    for (int i = 0; i < sArrZ.length; i++) {
+      expectEquals(i <= 10, sArrZ[i]);
+    }
+    // Type B.
+    sB = 1;
+    sArrB = new byte[100];
+    SInvLoopB();
+    for (int i = 0; i < sArrB.length; i++) {
+      expectEquals(1, sArrB[i]);
+    }
+    SVarLoopB();
+    for (int i = 0; i < sArrB.length; i++) {
+      expectEquals(i <= 10 ? 1 : 2, sArrB[i]);
+    }
+    // Type C.
+    sC = 2;
+    sArrC = new char[100];
+    SInvLoopC();
+    for (int i = 0; i < sArrC.length; i++) {
+      expectEquals(2, sArrC[i]);
+    }
+    SVarLoopC();
+    for (int i = 0; i < sArrC.length; i++) {
+      expectEquals(i <= 10 ? 2 : 3, sArrC[i]);
+    }
+    // Type S.
+    sS = 3;
+    sArrS = new short[100];
+    SInvLoopS();
+    for (int i = 0; i < sArrS.length; i++) {
+      expectEquals(3, sArrS[i]);
+    }
+    SVarLoopS();
+    for (int i = 0; i < sArrS.length; i++) {
+      expectEquals(i <= 10 ? 3 : 4, sArrS[i]);
+    }
+    // Type I.
+    sI = 4;
+    sArrI = new int[100];
+    SInvLoopI();
+    for (int i = 0; i < sArrI.length; i++) {
+      expectEquals(4, sArrI[i]);
+    }
+    SVarLoopI();
+    for (int i = 0; i < sArrI.length; i++) {
+      expectEquals(i <= 10 ? 4 : 5, sArrI[i]);
+    }
+    // Type J.
+    sJ = 5;
+    sArrJ = new long[100];
+    SInvLoopJ();
+    for (int i = 0; i < sArrJ.length; i++) {
+      expectEquals(5, sArrJ[i]);
+    }
+    SVarLoopJ();
+    for (int i = 0; i < sArrJ.length; i++) {
+      expectEquals(i <= 10 ? 5 : 6, sArrJ[i]);
+    }
+    // Type F.
+    sF = 6.0f;
+    sArrF = new float[100];
+    SInvLoopF();
+    for (int i = 0; i < sArrF.length; i++) {
+      expectEquals(6, sArrF[i]);
+    }
+    SVarLoopF();
+    for (int i = 0; i < sArrF.length; i++) {
+      expectEquals(i <= 10 ? 6 : 7, sArrF[i]);
+    }
+    // Type D.
+    sD = 7.0;
+    sArrD = new double[100];
+    SInvLoopD();
+    for (int i = 0; i < sArrD.length; i++) {
+      expectEquals(7.0, sArrD[i]);
+    }
+    SVarLoopD();
+    for (int i = 0; i < sArrD.length; i++) {
+      expectEquals(i <= 10 ? 7 : 8, sArrD[i]);
+    }
+    // Type L.
+    sL = anObject;
+    sArrL = new Object[100];
+    SInvLoopL();
+    for (int i = 0; i < sArrL.length; i++) {
+      expectEquals(anObject, sArrL[i]);
+    }
+    SVarLoopL();
+    for (int i = 0; i < sArrL.length; i++) {
+      expectEquals(i <= 10 ? anObject : anotherObject, sArrL[i]);
+    }
+  }
+
+  private void DoInstanceTests() {
+    // Type Z.
+    mZ = true;
+    mArrZ = new boolean[100];
+    InvLoopZ();
+    for (int i = 0; i < mArrZ.length; i++) {
+      expectEquals(true, mArrZ[i]);
+    }
+    VarLoopZ();
+    for (int i = 0; i < mArrZ.length; i++) {
+      expectEquals(i <= 10, mArrZ[i]);
+    }
+    // Type B.
+    mB = 1;
+    mArrB = new byte[100];
+    InvLoopB();
+    for (int i = 0; i < mArrB.length; i++) {
+      expectEquals(1, mArrB[i]);
+    }
+    VarLoopB();
+    for (int i = 0; i < mArrB.length; i++) {
+      expectEquals(i <= 10 ? 1 : 2, mArrB[i]);
+    }
+    // Type C.
+    mC = 2;
+    mArrC = new char[100];
+    InvLoopC();
+    for (int i = 0; i < mArrC.length; i++) {
+      expectEquals(2, mArrC[i]);
+    }
+    VarLoopC();
+    for (int i = 0; i < mArrC.length; i++) {
+      expectEquals(i <= 10 ? 2 : 3, mArrC[i]);
+    }
+    // Type S.
+    mS = 3;
+    mArrS = new short[100];
+    InvLoopS();
+    for (int i = 0; i < mArrS.length; i++) {
+      expectEquals(3, mArrS[i]);
+    }
+    VarLoopS();
+    for (int i = 0; i < mArrS.length; i++) {
+      expectEquals(i <= 10 ? 3 : 4, mArrS[i]);
+    }
+    // Type I.
+    mI = 4;
+    mArrI = new int[100];
+    InvLoopI();
+    for (int i = 0; i < mArrI.length; i++) {
+      expectEquals(4, mArrI[i]);
+    }
+    VarLoopI();
+    for (int i = 0; i < mArrI.length; i++) {
+      expectEquals(i <= 10 ? 4 : 5, mArrI[i]);
+    }
+    // Type J.
+    mJ = 5;
+    mArrJ = new long[100];
+    InvLoopJ();
+    for (int i = 0; i < mArrJ.length; i++) {
+      expectEquals(5, mArrJ[i]);
+    }
+    VarLoopJ();
+    for (int i = 0; i < mArrJ.length; i++) {
+      expectEquals(i <= 10 ? 5 : 6, mArrJ[i]);
+    }
+    // Type F.
+    mF = 6.0f;
+    mArrF = new float[100];
+    InvLoopF();
+    for (int i = 0; i < mArrF.length; i++) {
+      expectEquals(6, mArrF[i]);
+    }
+    VarLoopF();
+    for (int i = 0; i < mArrF.length; i++) {
+      expectEquals(i <= 10 ? 6 : 7, mArrF[i]);
+    }
+    // Type D.
+    mD = 7.0;
+    mArrD = new double[100];
+    InvLoopD();
+    for (int i = 0; i < mArrD.length; i++) {
+      expectEquals(7.0, mArrD[i]);
+    }
+    VarLoopD();
+    for (int i = 0; i < mArrD.length; i++) {
+      expectEquals(i <= 10 ? 7 : 8, mArrD[i]);
+    }
+    // Type L.
+    mL = anObject;
+    mArrL = new Object[100];
+    InvLoopL();
+    for (int i = 0; i < mArrL.length; i++) {
+      expectEquals(anObject, mArrL[i]);
+    }
+    VarLoopL();
+    for (int i = 0; i < mArrL.length; i++) {
+      expectEquals(i <= 10 ? anObject : anotherObject, mArrL[i]);
+    }
+  }
+
+  private static void expectEquals(boolean expected, boolean result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(byte expected, byte result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(char expected, char result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(short expected, short result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(int expected, int result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(long expected, long result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(float expected, float result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(double expected, double result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+
+  private static void expectEquals(Object expected, Object result) {
+    if (expected != result) {
+      throw new Error("Expected: " + expected + ", found: " + result);
+    }
+  }
+}