/* * Copyright (c) 2024, Red Hat, Inc. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /** * @test * @bug 8332827 * @summary [REDO] C2: crash in compiled code because of dependency on removed range check CastIIs * * @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation * -XX:CompileCommand=dontinline,TestArrayAccessAboveRCAfterRCCastIIEliminated::notInlined * TestArrayAccessAboveRCAfterRCCastIIEliminated * @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation * -XX:CompileCommand=dontinline,TestArrayAccessAboveRCAfterRCCastIIEliminated::notInlined * -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM TestArrayAccessAboveRCAfterRCCastIIEliminated * @run main TestArrayAccessAboveRCAfterRCCastIIEliminated * @run main/othervm -XX:CompileCommand=dontinline,TestArrayAccessAboveRCAfterRCCastIIEliminated::notInlined * TestArrayAccessAboveRCAfterRCCastIIEliminated * */ public class TestArrayAccessAboveRCAfterRCCastIIEliminated { private static int intField; private static long longField; private static volatile int volatileField; public static void main(String[] args) { for (int i = 0; i < 20_000; i++) { test1(9, 10, 1, true); test1(9, 10, 1, false); test2(9, 10, 1, true); test2(9, 10, 1, false); test3(9, 10, 1, true); test3(9, 10, 1, false); test4(9, 10, 1, true); test4(9, 10, 1, false); test5(9, 10, 1, true); test5(9, 10, 1, false); test6(9, 10, 1, true); test6(9, 10, 1, false); test7(9, 10, 1, true); test7(9, 10, 1, false); test8(9, 10, 1, true); test8(9, 10, 1, false); test9(9, 10, 1, true); test9(9, 10, 1, false); test10(9, 10, 1, true); test10(9, 10, 1, false); test11(9, 10, 1, true); test11(9, 10, 1, false); test12(9, 10, 1, true); test12(9, 10, 1, false); test13(9, 10, 1, true); test13(9, 10, 1, false); test14(8, 0, 1, true); test14(8, 0, 1, false); inlined14(0, 0); test15(8, 0, 1, true); test15(8, 0, 1, false); inlined15(0, 0); } try { test1(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test2(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test3(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test4(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test5(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test6(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test7(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test8(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test9(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test10(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test11(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test12(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test13(-1, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test14(Integer.MAX_VALUE, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } try { test15(Integer.MAX_VALUE, 10, 1, true); } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) { } } private static void test1(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = array[otherArray.length]; } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = array[otherArray.length]; } for (int k = 0; k < 10; k++) { } } private static void test2(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = 1 / (otherArray.length + 1); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = 1 / (otherArray.length + 1); } for (int k = 0; k < 10; k++) { } } private static void test3(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = 1L / (otherArray.length + 1); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = 1L / (otherArray.length + 1); } for (int k = 0; k < 10; k++) { } } private static void test4(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = 1 % (otherArray.length + 1); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = 1 % (otherArray.length + 1); } for (int k = 0; k < 10; k++) { } } private static void test5(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = 1L % (otherArray.length + 1); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = 1L % (otherArray.length + 1); } for (int k = 0; k < 10; k++) { } } private static void test6(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = 1 % (otherArray.length + 1) + 1 / (otherArray.length + 1); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = 1 % (otherArray.length + 1) + 1 / (otherArray.length + 1); } for (int k = 0; k < 10; k++) { } } private static void test7(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = 1L % (otherArray.length + 1) + 1L / (otherArray.length + 1); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = 1L % (otherArray.length + 1) + 1L / (otherArray.length + 1); } for (int k = 0; k < 10; k++) { } } private static void test8(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = Integer.divideUnsigned(1, (otherArray.length + 1)); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = Integer.divideUnsigned(1, (otherArray.length + 1)); } for (int k = 0; k < 10; k++) { } } private static void test9(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = Long.divideUnsigned(1L, (otherArray.length + 1)); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = Long.divideUnsigned(1L, (otherArray.length + 1)); } for (int k = 0; k < 10; k++) { } } private static void test10(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = Integer.remainderUnsigned(1, (otherArray.length + 1)); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = Integer.remainderUnsigned(1, (otherArray.length + 1)); } for (int k = 0; k < 10; k++) { } } private static void test11(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = Long.remainderUnsigned(1L, (otherArray.length + 1)); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = Long.remainderUnsigned(1L, (otherArray.length + 1)); } for (int k = 0; k < 10; k++) { } } private static void test12(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = Integer.divideUnsigned(1, (otherArray.length + 1)) + Integer.remainderUnsigned(1, (otherArray.length + 1)); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } intField = Integer.divideUnsigned(1, (otherArray.length + 1)) + Integer.remainderUnsigned(1, (otherArray.length + 1)); } for (int k = 0; k < 10; k++) { } } private static void test13(int i, int j, int flag, boolean flag2) { i = Math.min(i, 9); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = Long.remainderUnsigned(1L, (otherArray.length + 1)) + Long.divideUnsigned(1L, (otherArray.length + 1)); } else { float[] newArray = new float[j]; newArray[i] = 42; float[] otherArray = new float[i]; if (flag == 0) { } longField = Long.remainderUnsigned(1L, (otherArray.length + 1)) + Long.divideUnsigned(1L, (otherArray.length + 1)); } for (int k = 0; k < 10; k++) { } } // Range check cast type widen after loop opts causes control dependency to be lost private static void test14(int i, int j, int flag, boolean flag2) { int l = 0; for (; l < 10; l++); j = inlined14(j, l); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[10]; newArray[i+j] = 42; // i+j in [0, 9] float[] otherArray = new float[i+j]; // i+j in [0, max] if (flag == 0) { } intField = array[otherArray.length]; } else { float[] newArray = new float[10]; newArray[i+j] = 42; // i+j in [0, 9] float[] otherArray = new float[i+j]; // i+j in [0, max] if (flag == 0) { } intField = array[otherArray.length]; } } private static int inlined14(int j, int l) { if (l == 10) { j = 1; } return j; } private static void test15(int i, int j, int flag, boolean flag2) { i = Integer.max(i, Integer.MIN_VALUE + 1); int l = 0; for (; l < 10; l++); j = inlined15(j, l); int[] array = new int[10]; notInlined(array); if (flag == 0) { } if (flag2) { float[] newArray = new float[10]; newArray[i+j] = 42; // i+j in [0, 9] float[] otherArray = new float[i+j]; // i+j in [0, max] if (flag == 0) { } intField = array[otherArray.length]; } else { float[] newArray = new float[10]; newArray[i+j] = 42; // i+j in [0, 9] float[] otherArray = new float[i+j]; // i+j in [0, max] if (flag == 0) { } intField = array[otherArray.length]; } } private static int inlined15(int j, int l) { if (l == 10) { j = Integer.max(j, Integer.MIN_VALUE + 10); } return j; } private static void notInlined(int[] array) { } }