/* * Copyright (c) 2016, Oracle and/or its affiliates. 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 * @summary tests on constant folding of unsafe get operations from stable arrays * @library /testlibrary /test/lib * * @requires vm.flavor != "client" * * @run main/bootclasspath -XX:+UnlockDiagnosticVMOptions * -Xbatch -XX:-TieredCompilation * -XX:+FoldStableValues * -XX:CompileCommand=dontinline,*Test::test* * UnsafeGetStableArrayElement */ import jdk.internal.misc.Unsafe; import jdk.internal.vm.annotation.Stable; import java.util.concurrent.Callable; import static jdk.internal.misc.Unsafe.*; import static jdk.test.lib.Asserts.*; public class UnsafeGetStableArrayElement { @Stable static final boolean[] STABLE_BOOLEAN_ARRAY = new boolean[16]; @Stable static final byte[] STABLE_BYTE_ARRAY = new byte[16]; @Stable static final short[] STABLE_SHORT_ARRAY = new short[8]; @Stable static final char[] STABLE_CHAR_ARRAY = new char[8]; @Stable static final int[] STABLE_INT_ARRAY = new int[4]; @Stable static final long[] STABLE_LONG_ARRAY = new long[2]; @Stable static final float[] STABLE_FLOAT_ARRAY = new float[4]; @Stable static final double[] STABLE_DOUBLE_ARRAY = new double[2]; @Stable static final Object[] STABLE_OBJECT_ARRAY = new Object[4]; static { Setter.reset(); } static final Unsafe U = Unsafe.getUnsafe(); static class Setter { private static void setZ(boolean defaultVal) { STABLE_BOOLEAN_ARRAY[0] = defaultVal ? false : true; } private static void setB(boolean defaultVal) { STABLE_BYTE_ARRAY[0] = defaultVal ? 0 : Byte.MAX_VALUE; } private static void setS(boolean defaultVal) { STABLE_SHORT_ARRAY[0] = defaultVal ? 0 : Short.MAX_VALUE; } private static void setC(boolean defaultVal) { STABLE_CHAR_ARRAY[0] = defaultVal ? 0 : Character.MAX_VALUE; } private static void setI(boolean defaultVal) { STABLE_INT_ARRAY[0] = defaultVal ? 0 : Integer.MAX_VALUE; } private static void setJ(boolean defaultVal) { STABLE_LONG_ARRAY[0] = defaultVal ? 0 : Long.MAX_VALUE; } private static void setF(boolean defaultVal) { STABLE_FLOAT_ARRAY[0] = defaultVal ? 0 : Float.MAX_VALUE; } private static void setD(boolean defaultVal) { STABLE_DOUBLE_ARRAY[0] = defaultVal ? 0 : Double.MAX_VALUE; } private static void setL(boolean defaultVal) { STABLE_OBJECT_ARRAY[0] = defaultVal ? null : new Object(); } static void reset() { setZ(false); setB(false); setS(false); setC(false); setI(false); setJ(false); setF(false); setD(false); setL(false); } } static class Test { static void changeZ() { Setter.setZ(true); } static void changeB() { Setter.setB(true); } static void changeS() { Setter.setS(true); } static void changeC() { Setter.setC(true); } static void changeI() { Setter.setI(true); } static void changeJ() { Setter.setJ(true); } static void changeF() { Setter.setF(true); } static void changeD() { Setter.setD(true); } static void changeL() { Setter.setL(true); } static boolean testZ_Z() { return U.getBoolean(STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static byte testZ_B() { return U.getByte( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static short testZ_S() { return U.getShort( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static char testZ_C() { return U.getChar( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static int testZ_I() { return U.getInt( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static long testZ_J() { return U.getLong( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static float testZ_F() { return U.getFloat( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static double testZ_D() { return U.getDouble( STABLE_BOOLEAN_ARRAY, ARRAY_BOOLEAN_BASE_OFFSET); } static boolean testB_Z() { return U.getBoolean(STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static byte testB_B() { return U.getByte( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static short testB_S() { return U.getShort( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static char testB_C() { return U.getChar( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static int testB_I() { return U.getInt( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static long testB_J() { return U.getLong( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static float testB_F() { return U.getFloat( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static double testB_D() { return U.getDouble( STABLE_BYTE_ARRAY, ARRAY_BYTE_BASE_OFFSET); } static boolean testS_Z() { return U.getBoolean(STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static byte testS_B() { return U.getByte( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static short testS_S() { return U.getShort( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static char testS_C() { return U.getChar( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static int testS_I() { return U.getInt( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static long testS_J() { return U.getLong( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static float testS_F() { return U.getFloat( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static double testS_D() { return U.getDouble( STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET); } static boolean testC_Z() { return U.getBoolean(STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static byte testC_B() { return U.getByte( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static short testC_S() { return U.getShort( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static char testC_C() { return U.getChar( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static int testC_I() { return U.getInt( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static long testC_J() { return U.getLong( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static float testC_F() { return U.getFloat( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static double testC_D() { return U.getDouble( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET); } static boolean testI_Z() { return U.getBoolean(STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static byte testI_B() { return U.getByte( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static short testI_S() { return U.getShort( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static char testI_C() { return U.getChar( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static int testI_I() { return U.getInt( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static long testI_J() { return U.getLong( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static float testI_F() { return U.getFloat( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static double testI_D() { return U.getDouble( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET); } static boolean testJ_Z() { return U.getBoolean(STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static byte testJ_B() { return U.getByte( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static short testJ_S() { return U.getShort( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static char testJ_C() { return U.getChar( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static int testJ_I() { return U.getInt( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static long testJ_J() { return U.getLong( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static float testJ_F() { return U.getFloat( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static double testJ_D() { return U.getDouble( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET); } static boolean testF_Z() { return U.getBoolean(STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static byte testF_B() { return U.getByte( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static short testF_S() { return U.getShort( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static char testF_C() { return U.getChar( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static int testF_I() { return U.getInt( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static long testF_J() { return U.getLong( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static float testF_F() { return U.getFloat( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static double testF_D() { return U.getDouble( STABLE_FLOAT_ARRAY, ARRAY_FLOAT_BASE_OFFSET); } static boolean testD_Z() { return U.getBoolean(STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static byte testD_B() { return U.getByte( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static short testD_S() { return U.getShort( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static char testD_C() { return U.getChar( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static int testD_I() { return U.getInt( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static long testD_J() { return U.getLong( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static float testD_F() { return U.getFloat( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static double testD_D() { return U.getDouble( STABLE_DOUBLE_ARRAY, ARRAY_DOUBLE_BASE_OFFSET); } static Object testL_L() { return U.getObject( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static boolean testL_Z() { return U.getBoolean(STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static byte testL_B() { return U.getByte( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static short testL_S() { return U.getShort( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static char testL_C() { return U.getChar( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static int testL_I() { return U.getInt( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static long testL_J() { return U.getLong( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static float testL_F() { return U.getFloat( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static double testL_D() { return U.getDouble( STABLE_OBJECT_ARRAY, ARRAY_OBJECT_BASE_OFFSET); } static short testS_U() { return U.getShortUnaligned(STABLE_SHORT_ARRAY, ARRAY_SHORT_BASE_OFFSET + 1); } static char testC_U() { return U.getCharUnaligned( STABLE_CHAR_ARRAY, ARRAY_CHAR_BASE_OFFSET + 1); } static int testI_U() { return U.getIntUnaligned( STABLE_INT_ARRAY, ARRAY_INT_BASE_OFFSET + 1); } static long testJ_U() { return U.getLongUnaligned( STABLE_LONG_ARRAY, ARRAY_LONG_BASE_OFFSET + 1); } } static void run(Callable c, Runnable sameResultAction, Runnable changeResultAction) throws Exception { Object first = c.call(); // Trigger compilation. for (int i = 0; i < 20_000; i++) { // Don't compare results here, since most of Test::testL_* results vary across iterations (due to GC). c.call(); } if (sameResultAction != null) { sameResultAction.run(); assertEQ(first, c.call()); } if (changeResultAction != null) { changeResultAction.run(); assertNE(first, c.call()); assertEQ(c.call(), c.call()); } } static void testMatched(Callable c, Runnable setDefaultAction) throws Exception { run(c, setDefaultAction, null); Setter.reset(); } static void testMismatched(Callable c, Runnable setDefaultAction) throws Exception { run(c, null, setDefaultAction); Setter.reset(); } public static void main(String[] args) throws Exception { // boolean[], aligned accesses testMatched( Test::testZ_Z, Test::changeZ); testMismatched(Test::testZ_B, Test::changeZ); testMismatched(Test::testZ_S, Test::changeZ); testMismatched(Test::testZ_C, Test::changeZ); testMismatched(Test::testZ_I, Test::changeZ); testMismatched(Test::testZ_J, Test::changeZ); testMismatched(Test::testZ_F, Test::changeZ); testMismatched(Test::testZ_D, Test::changeZ); // byte[], aligned accesses testMismatched(Test::testB_Z, Test::changeB); testMatched( Test::testB_B, Test::changeB); testMismatched(Test::testB_S, Test::changeB); testMismatched(Test::testB_C, Test::changeB); testMismatched(Test::testB_I, Test::changeB); testMismatched(Test::testB_J, Test::changeB); testMismatched(Test::testB_F, Test::changeB); testMismatched(Test::testB_D, Test::changeB); // short[], aligned accesses testMismatched(Test::testS_Z, Test::changeS); testMismatched(Test::testS_B, Test::changeS); testMatched( Test::testS_S, Test::changeS); testMismatched(Test::testS_C, Test::changeS); testMismatched(Test::testS_I, Test::changeS); testMismatched(Test::testS_J, Test::changeS); testMismatched(Test::testS_F, Test::changeS); testMismatched(Test::testS_D, Test::changeS); // char[], aligned accesses testMismatched(Test::testC_Z, Test::changeC); testMismatched(Test::testC_B, Test::changeC); testMismatched(Test::testC_S, Test::changeC); testMatched( Test::testC_C, Test::changeC); testMismatched(Test::testC_I, Test::changeC); testMismatched(Test::testC_J, Test::changeC); testMismatched(Test::testC_F, Test::changeC); testMismatched(Test::testC_D, Test::changeC); // int[], aligned accesses testMismatched(Test::testI_Z, Test::changeI); testMismatched(Test::testI_B, Test::changeI); testMismatched(Test::testI_S, Test::changeI); testMismatched(Test::testI_C, Test::changeI); testMatched( Test::testI_I, Test::changeI); testMismatched(Test::testI_J, Test::changeI); testMismatched(Test::testI_F, Test::changeI); testMismatched(Test::testI_D, Test::changeI); // long[], aligned accesses testMismatched(Test::testJ_Z, Test::changeJ); testMismatched(Test::testJ_B, Test::changeJ); testMismatched(Test::testJ_S, Test::changeJ); testMismatched(Test::testJ_C, Test::changeJ); testMismatched(Test::testJ_I, Test::changeJ); testMatched( Test::testJ_J, Test::changeJ); testMismatched(Test::testJ_F, Test::changeJ); testMismatched(Test::testJ_D, Test::changeJ); // float[], aligned accesses testMismatched(Test::testF_Z, Test::changeF); testMismatched(Test::testF_B, Test::changeF); testMismatched(Test::testF_S, Test::changeF); testMismatched(Test::testF_C, Test::changeF); testMismatched(Test::testF_I, Test::changeF); testMismatched(Test::testF_J, Test::changeF); testMatched( Test::testF_F, Test::changeF); testMismatched(Test::testF_D, Test::changeF); // double[], aligned accesses testMismatched(Test::testD_Z, Test::changeD); testMismatched(Test::testD_B, Test::changeD); testMismatched(Test::testD_S, Test::changeD); testMismatched(Test::testD_C, Test::changeD); testMismatched(Test::testD_I, Test::changeD); testMismatched(Test::testD_J, Test::changeD); testMismatched(Test::testD_F, Test::changeD); testMatched( Test::testD_D, Test::changeD); // Object[], aligned accesses testMismatched(Test::testL_Z, Test::changeL); testMismatched(Test::testL_B, Test::changeL); testMismatched(Test::testL_S, Test::changeL); testMismatched(Test::testL_C, Test::changeL); testMismatched(Test::testL_I, Test::changeL); testMismatched(Test::testL_J, Test::changeL); testMismatched(Test::testL_F, Test::changeL); testMismatched(Test::testL_D, Test::changeL); testMatched( Test::testL_L, Test::changeL); // Unaligned accesses testMismatched(Test::testS_U, Test::changeS); testMismatched(Test::testC_U, Test::changeC); testMismatched(Test::testI_U, Test::changeI); testMismatched(Test::testJ_U, Test::changeJ); } }