/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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// Test on (in)variant static field and array references in loops.
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//
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public class Main {
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private static Object anObject = new Object();
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private static Object anotherObject = new Object();
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//
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// Static fields.
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//
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private static boolean sZ;
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private static byte sB;
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private static char sC;
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private static short sS;
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private static int sI;
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private static long sJ;
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private static float sF;
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private static double sD;
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private static Object sL;
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//
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// Static arrays.
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//
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private static boolean[] sArrZ;
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private static byte[] sArrB;
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private static char[] sArrC;
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private static short[] sArrS;
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private static int[] sArrI;
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private static long[] sArrJ;
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private static float[] sArrF;
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private static double[] sArrD;
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private static Object[] sArrL;
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//
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// Loops on static arrays with invariant static field references.
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// The checker is used to ensure hoisting occurred.
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//
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/// CHECK-START: void Main.InvLoopZ() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopZ() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopZ() {
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for (int i = 0; i < sArrZ.length; i++) {
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sArrZ[i] = sZ;
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}
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}
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/// CHECK-START: void Main.InvLoopB() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopB() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopB() {
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for (int i = 0; i < sArrB.length; i++) {
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sArrB[i] = sB;
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}
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}
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/// CHECK-START: void Main.InvLoopC() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopC() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopC() {
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for (int i = 0; i < sArrC.length; i++) {
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sArrC[i] = sC;
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}
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}
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/// CHECK-START: void Main.InvLoopS() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopS() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopS() {
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for (int i = 0; i < sArrS.length; i++) {
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sArrS[i] = sS;
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}
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}
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/// CHECK-START: void Main.InvLoopI() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopI() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopI() {
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for (int i = 0; i < sArrI.length; i++) {
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sArrI[i] = sI;
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}
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}
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/// CHECK-START: void Main.InvLoopJ() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopJ() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopJ() {
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for (int i = 0; i < sArrJ.length; i++) {
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sArrJ[i] = sJ;
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}
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}
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/// CHECK-START: void Main.InvLoopF() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopF() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopF() {
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for (int i = 0; i < sArrF.length; i++) {
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sArrF[i] = sF;
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}
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}
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/// CHECK-START: void Main.InvLoopD() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopD() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopD() {
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for (int i = 0; i < sArrD.length; i++) {
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sArrD[i] = sD;
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}
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}
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/// CHECK-START: void Main.InvLoopL() licm (before)
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-DAG: StaticFieldGet loop:{{B\d+}}
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/// CHECK-START: void Main.InvLoopL() licm (after)
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/// CHECK-DAG: StaticFieldGet loop:none
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/// CHECK-DAG: StaticFieldGet loop:none
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private static void InvLoopL() {
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for (int i = 0; i < sArrL.length; i++) {
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sArrL[i] = sL;
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}
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}
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//
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// Loops on static arrays with variant static field references.
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// Incorrect hoisting is detected by incorrect outcome.
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//
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private static void VarLoopZ() {
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for (int i = 0; i < sArrZ.length; i++) {
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sArrZ[i] = sZ;
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if (i == 10)
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sZ = !sZ;
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}
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}
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private static void VarLoopB() {
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for (int i = 0; i < sArrB.length; i++) {
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sArrB[i] = sB;
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if (i == 10)
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sB++;
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}
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}
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private static void VarLoopC() {
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for (int i = 0; i < sArrC.length; i++) {
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sArrC[i] = sC;
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if (i == 10)
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sC++;
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}
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}
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private static void VarLoopS() {
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for (int i = 0; i < sArrS.length; i++) {
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sArrS[i] = sS;
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if (i == 10)
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sS++;
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}
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}
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private static void VarLoopI() {
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for (int i = 0; i < sArrI.length; i++) {
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sArrI[i] = sI;
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if (i == 10)
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sI++;
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}
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}
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private static void VarLoopJ() {
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for (int i = 0; i < sArrJ.length; i++) {
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sArrJ[i] = sJ;
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if (i == 10)
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sJ++;
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}
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}
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private static void VarLoopF() {
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for (int i = 0; i < sArrF.length; i++) {
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sArrF[i] = sF;
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if (i == 10)
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sF++;
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}
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}
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private static void VarLoopD() {
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for (int i = 0; i < sArrD.length; i++) {
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sArrD[i] = sD;
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if (i == 10)
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sD++;
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}
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}
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private static void VarLoopL() {
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for (int i = 0; i < sArrL.length; i++) {
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sArrL[i] = sL;
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if (i == 10)
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sL = anotherObject;
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}
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}
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//
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// Loops on static arrays with a cross-over reference.
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// Incorrect hoisting is detected by incorrect outcome.
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// In addition, the checker is used to detect no hoisting.
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//
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/// CHECK-START: void Main.CrossOverLoopZ() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopZ() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopZ() {
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sArrZ[20] = false;
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for (int i = 0; i < sArrZ.length; i++) {
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sArrZ[i] = !sArrZ[20];
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}
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}
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/// CHECK-START: void Main.CrossOverLoopB() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopB() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopB() {
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sArrB[20] = 11;
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for (int i = 0; i < sArrB.length; i++) {
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sArrB[i] = (byte)(sArrB[20] + 2);
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}
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}
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/// CHECK-START: void Main.CrossOverLoopC() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopC() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopC() {
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sArrC[20] = 11;
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for (int i = 0; i < sArrC.length; i++) {
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sArrC[i] = (char)(sArrC[20] + 2);
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}
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}
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/// CHECK-START: void Main.CrossOverLoopS() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopS() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopS() {
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sArrS[20] = 11;
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for (int i = 0; i < sArrS.length; i++) {
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sArrS[i] = (short)(sArrS[20] + 2);
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}
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}
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/// CHECK-START: void Main.CrossOverLoopI() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopI() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopI() {
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sArrI[20] = 11;
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for (int i = 0; i < sArrI.length; i++) {
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sArrI[i] = sArrI[20] + 2;
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}
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}
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/// CHECK-START: void Main.CrossOverLoopJ() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopJ() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopJ() {
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sArrJ[20] = 11;
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for (int i = 0; i < sArrJ.length; i++) {
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sArrJ[i] = sArrJ[20] + 2;
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}
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}
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/// CHECK-START: void Main.CrossOverLoopF() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopF() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopF() {
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sArrF[20] = 11;
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for (int i = 0; i < sArrF.length; i++) {
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sArrF[i] = sArrF[20] + 2;
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}
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}
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/// CHECK-START: void Main.CrossOverLoopD() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopD() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopD() {
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sArrD[20] = 11;
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for (int i = 0; i < sArrD.length; i++) {
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sArrD[i] = sArrD[20] + 2;
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}
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}
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/// CHECK-START: void Main.CrossOverLoopL() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.CrossOverLoopL() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void CrossOverLoopL() {
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sArrL[20] = anotherObject;
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for (int i = 0; i < sArrL.length; i++) {
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sArrL[i] = (sArrL[20] == anObject) ? anotherObject : anObject;
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}
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}
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//
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// False cross-over loops on static arrays with data types (I/F and J/D) that used
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// to be aliased in an older version of the compiler. This alias has been removed,
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// however, which enables hoisting the invariant array reference.
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//
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/// CHECK-START: void Main.FalseCrossOverLoop1() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.FalseCrossOverLoop1() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:none
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void FalseCrossOverLoop1() {
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sArrF[20] = -1;
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for (int i = 0; i < sArrI.length; i++) {
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sArrI[i] = (int) sArrF[20] - 2;
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}
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}
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/// CHECK-START: void Main.FalseCrossOverLoop2() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.FalseCrossOverLoop2() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:none
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void FalseCrossOverLoop2() {
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sArrI[20] = -2;
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for (int i = 0; i < sArrF.length; i++) {
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sArrF[i] = sArrI[20] - 2;
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}
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}
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/// CHECK-START: void Main.FalseCrossOverLoop3() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.FalseCrossOverLoop3() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:none
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void FalseCrossOverLoop3() {
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sArrD[20] = -3;
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for (int i = 0; i < sArrJ.length; i++) {
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sArrJ[i] = (long) sArrD[20] - 2;
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}
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}
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/// CHECK-START: void Main.FalseCrossOverLoop4() licm (before)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:{{B\d+}}
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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/// CHECK-START: void Main.FalseCrossOverLoop4() licm (after)
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/// CHECK-DAG: ArraySet loop:none
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/// CHECK-DAG: ArrayGet loop:none
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/// CHECK-DAG: ArraySet loop:{{B\d+}}
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private static void FalseCrossOverLoop4() {
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sArrJ[20] = -4;
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for (int i = 0; i < sArrD.length; i++) {
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sArrD[i] = sArrJ[20] - 2;
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}
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}
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//
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// Main driver and testers.
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//
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public static void main(String[] args) {
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DoStaticTests();
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System.out.println("passed");
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}
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private static void DoStaticTests() {
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// Type Z.
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sZ = true;
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sArrZ = new boolean[100];
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InvLoopZ();
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for (int i = 0; i < sArrZ.length; i++) {
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expectEquals(true, sArrZ[i]);
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}
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VarLoopZ();
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for (int i = 0; i < sArrZ.length; i++) {
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expectEquals(i <= 10, sArrZ[i]);
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}
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CrossOverLoopZ();
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for (int i = 0; i < sArrZ.length; i++) {
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expectEquals(i <= 20, sArrZ[i]);
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}
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// Type B.
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sB = 1;
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sArrB = new byte[100];
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InvLoopB();
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for (int i = 0; i < sArrB.length; i++) {
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expectEquals(1, sArrB[i]);
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}
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VarLoopB();
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for (int i = 0; i < sArrB.length; i++) {
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expectEquals(i <= 10 ? 1 : 2, sArrB[i]);
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}
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CrossOverLoopB();
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for (int i = 0; i < sArrB.length; i++) {
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expectEquals(i <= 20 ? 13 : 15, sArrB[i]);
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}
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// Type C.
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sC = 2;
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sArrC = new char[100];
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InvLoopC();
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for (int i = 0; i < sArrC.length; i++) {
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expectEquals(2, sArrC[i]);
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}
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VarLoopC();
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for (int i = 0; i < sArrC.length; i++) {
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expectEquals(i <= 10 ? 2 : 3, sArrC[i]);
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}
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CrossOverLoopC();
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for (int i = 0; i < sArrC.length; i++) {
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expectEquals(i <= 20 ? 13 : 15, sArrC[i]);
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}
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// Type S.
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sS = 3;
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sArrS = new short[100];
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InvLoopS();
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for (int i = 0; i < sArrS.length; i++) {
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expectEquals(3, sArrS[i]);
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}
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VarLoopS();
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for (int i = 0; i < sArrS.length; i++) {
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expectEquals(i <= 10 ? 3 : 4, sArrS[i]);
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}
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CrossOverLoopS();
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for (int i = 0; i < sArrS.length; i++) {
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expectEquals(i <= 20 ? 13 : 15, sArrS[i]);
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}
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// Type I.
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sI = 4;
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sArrI = new int[100];
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InvLoopI();
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for (int i = 0; i < sArrI.length; i++) {
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expectEquals(4, sArrI[i]);
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}
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VarLoopI();
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for (int i = 0; i < sArrI.length; i++) {
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expectEquals(i <= 10 ? 4 : 5, sArrI[i]);
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}
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CrossOverLoopI();
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for (int i = 0; i < sArrI.length; i++) {
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expectEquals(i <= 20 ? 13 : 15, sArrI[i]);
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}
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// Type J.
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sJ = 5;
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sArrJ = new long[100];
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InvLoopJ();
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for (int i = 0; i < sArrJ.length; i++) {
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expectEquals(5, sArrJ[i]);
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}
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VarLoopJ();
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for (int i = 0; i < sArrJ.length; i++) {
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expectEquals(i <= 10 ? 5 : 6, sArrJ[i]);
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}
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CrossOverLoopJ();
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for (int i = 0; i < sArrJ.length; i++) {
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expectEquals(i <= 20 ? 13 : 15, sArrJ[i]);
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}
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// Type F.
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sF = 6.0f;
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sArrF = new float[100];
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InvLoopF();
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for (int i = 0; i < sArrF.length; i++) {
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expectEquals(6, sArrF[i]);
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}
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VarLoopF();
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for (int i = 0; i < sArrF.length; i++) {
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expectEquals(i <= 10 ? 6 : 7, sArrF[i]);
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}
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CrossOverLoopF();
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for (int i = 0; i < sArrF.length; i++) {
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expectEquals(i <= 20 ? 13 : 15, sArrF[i]);
|
}
|
// Type D.
|
sD = 7.0;
|
sArrD = new double[100];
|
InvLoopD();
|
for (int i = 0; i < sArrD.length; i++) {
|
expectEquals(7.0, sArrD[i]);
|
}
|
VarLoopD();
|
for (int i = 0; i < sArrD.length; i++) {
|
expectEquals(i <= 10 ? 7 : 8, sArrD[i]);
|
}
|
CrossOverLoopD();
|
for (int i = 0; i < sArrD.length; i++) {
|
expectEquals(i <= 20 ? 13 : 15, sArrD[i]);
|
}
|
// Type L.
|
sL = anObject;
|
sArrL = new Object[100];
|
InvLoopL();
|
for (int i = 0; i < sArrL.length; i++) {
|
expectEquals(anObject, sArrL[i]);
|
}
|
VarLoopL();
|
for (int i = 0; i < sArrL.length; i++) {
|
expectEquals(i <= 10 ? anObject : anotherObject, sArrL[i]);
|
}
|
CrossOverLoopL();
|
for (int i = 0; i < sArrL.length; i++) {
|
expectEquals(i <= 20 ? anObject : anotherObject, sArrL[i]);
|
}
|
// False cross-over.
|
FalseCrossOverLoop1();
|
for (int i = 0; i < sArrI.length; i++) {
|
expectEquals(-3, sArrI[i]);
|
}
|
FalseCrossOverLoop2();
|
for (int i = 0; i < sArrF.length; i++) {
|
expectEquals(-4, sArrF[i]);
|
}
|
FalseCrossOverLoop3();
|
for (int i = 0; i < sArrJ.length; i++) {
|
expectEquals(-5, sArrJ[i]);
|
}
|
FalseCrossOverLoop4();
|
for (int i = 0; i < sArrD.length; i++) {
|
expectEquals(-6, sArrD[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);
|
}
|
}
|
}
|
