test/compiler/stable/TestStableFloat.java - platform/external/jetbrains/jdk8u_hotspot - Git at Google

 /*
  * Copyright (c) 2014, 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 TestStableFloat
  * @summary tests on stable fields and arrays
  * @library /testlibrary /testlibrary/whitebox
  * @build TestStableFloat StableConfiguration sun.hotspot.WhiteBox
  * @run main ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
  * @run main ClassFileInstaller
  *           java/lang/invoke/StableConfiguration
  *           java/lang/invoke/TestStableFloat
  *           java/lang/invoke/TestStableFloat$FloatStable
  *           java/lang/invoke/TestStableFloat$StaticFloatStable
  *           java/lang/invoke/TestStableFloat$VolatileFloatStable
  *           java/lang/invoke/TestStableFloat$FloatArrayDim1
  *           java/lang/invoke/TestStableFloat$FloatArrayDim2
  *           java/lang/invoke/TestStableFloat$FloatArrayDim3
  *           java/lang/invoke/TestStableFloat$FloatArrayDim4
  *           java/lang/invoke/TestStableFloat$ObjectArrayLowerDim0
  *           java/lang/invoke/TestStableFloat$ObjectArrayLowerDim1
  *           java/lang/invoke/TestStableFloat$NestedStableField
  *           java/lang/invoke/TestStableFloat$NestedStableField$A
  *           java/lang/invoke/TestStableFloat$NestedStableField1
  *           java/lang/invoke/TestStableFloat$NestedStableField1$A
  *           java/lang/invoke/TestStableFloat$NestedStableField2
  *           java/lang/invoke/TestStableFloat$NestedStableField2$A
  *           java/lang/invoke/TestStableFloat$NestedStableField3
  *           java/lang/invoke/TestStableFloat$NestedStableField3$A
  *           java/lang/invoke/TestStableFloat$DefaultValue
  *           java/lang/invoke/TestStableFloat$DefaultStaticValue
  *           java/lang/invoke/TestStableFloat$ObjectArrayLowerDim2
  *
  * @run main/othervm -Xbootclasspath/a:.
  *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
  *                   -XX:-TieredCompilation
  *                   -XX:+FoldStableValues
  *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
  *                   java.lang.invoke.TestStableFloat
  * @run main/othervm -Xbootclasspath/a:.
  *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
  *                   -XX:-TieredCompilation
  *                   -XX:-FoldStableValues
  *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
  *                   java.lang.invoke.TestStableFloat
  *
  * @run main/othervm -Xbootclasspath/a:.
  *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
  *                   -XX:+TieredCompilation -XX:TieredStopAtLevel=1
  *                   -XX:+FoldStableValues
  *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
  *                   java.lang.invoke.TestStableFloat
  * @run main/othervm -Xbootclasspath/a:.
  *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
  *                   -XX:+TieredCompilation -XX:TieredStopAtLevel=1
  *                   -XX:-FoldStableValues
  *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
  *                   java.lang.invoke.TestStableFloat
  *
  */
 package java.lang.invoke;

 import java.lang.reflect.InvocationTargetException;

 public class TestStableFloat {
     static final boolean isStableEnabled    = StableConfiguration.isStableEnabled;
     static final boolean isServerWithStable = StableConfiguration.isServerWithStable;

     public static void main(String[] args) throws Exception {
         run(DefaultValue.class);
         run(FloatStable.class);
         run(DefaultStaticValue.class);
         run(StaticFloatStable.class);
         run(VolatileFloatStable.class);

         // @Stable arrays: Dim 1-4
         run(FloatArrayDim1.class);
         run(FloatArrayDim2.class);
         run(FloatArrayDim3.class);
         run(FloatArrayDim4.class);

         // @Stable Object field: dynamic arrays
         run(ObjectArrayLowerDim0.class);
         run(ObjectArrayLowerDim1.class);
         run(ObjectArrayLowerDim2.class);

         // Nested @Stable fields
         run(NestedStableField.class);
         run(NestedStableField1.class);
         run(NestedStableField2.class);
         run(NestedStableField3.class);

         if (failed) {
             throw new Error("TEST FAILED");
         }
     }

     /* ==================================================== */

     static class DefaultValue {
         public @Stable float v;

         public static final DefaultValue c = new DefaultValue();
         public static float get() { return c.v; }
         public static void test() throws Exception {
                         float val1 = get();
             c.v = 1.0F; float val2 = get();
             assertEquals(val1, 0F);
             assertEquals(val2, 1.0F);
         }
     }

     /* ==================================================== */

     static class FloatStable {
         public @Stable float v;

         public static final FloatStable c = new FloatStable();
         public static float get() { return c.v; }
         public static void test() throws Exception {
             c.v = 1.0F; float val1 = get();
             c.v = 2.0F; float val2 = get();
             assertEquals(val1, 1.0F);
             assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
         }
     }

     /* ==================================================== */

     static class DefaultStaticValue {
         public static @Stable float v;

         public static final DefaultStaticValue c = new DefaultStaticValue();
         public static float get() { return c.v; }
         public static void test() throws Exception {
                         float val1 = get();
             c.v = 1.0F; float val2 = get();
             assertEquals(val1, 0F);
             assertEquals(val2, 1.0F);
         }
     }

     /* ==================================================== */

     static class StaticFloatStable {
         public static @Stable float v;

         public static final StaticFloatStable c = new StaticFloatStable();
         public static float get() { return c.v; }
         public static void test() throws Exception {
             c.v = 1.0F; float val1 = get();
             c.v = 2.0F; float val2 = get();
             assertEquals(val1, 1.0F);
             assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
         }
     }

     /* ==================================================== */

     static class VolatileFloatStable {
         public @Stable volatile float v;

         public static final VolatileFloatStable c = new VolatileFloatStable();
         public static float get() { return c.v; }
         public static void test() throws Exception {
             c.v = 1.0F; float val1 = get();
             c.v = 2.0F; float val2 = get();
             assertEquals(val1, 1.0F);
             assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
         }
     }

     /* ==================================================== */
     // @Stable array == field && all components are stable

     static class FloatArrayDim1 {
         public @Stable float[] v;

         public static final FloatArrayDim1 c = new FloatArrayDim1();
         public static float get() { return c.v[0]; }
         public static float get1() { return c.v[10]; }
         public static float[] get2() { return c.v; }
         public static void test() throws Exception {
             {
                 c.v = new float[1]; c.v[0] = 1.0F; float val1 = get();
                                     c.v[0] = 2.0F; float val2 = get();
                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

                 c.v = new float[1]; c.v[0] = 3.0F; float val3 = get();
                 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 3.0F));
             }

             {
                 c.v = new float[20]; c.v[10] = 1.0F; float val1 = get1();
                                      c.v[10] = 2.0F; float val2 = get1();
                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

                 c.v = new float[20]; c.v[10] = 3.0F; float val3 = get1();
                 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 3.0F));
             }

             {
                 c.v = new float[1]; float[] val1 = get2();
                 c.v = new float[1]; float[] val2 = get2();
                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */

     static class FloatArrayDim2 {
         public @Stable float[][] v;

         public static final FloatArrayDim2 c = new FloatArrayDim2();
         public static float get() { return c.v[0][0]; }
         public static float[] get1() { return c.v[0]; }
         public static float[][] get2() { return c.v; }
         public static void test() throws Exception {
             {
                 c.v = new float[1][1]; c.v[0][0] = 1.0F; float val1 = get();
                                        c.v[0][0] = 2.0F; float val2 = get();
                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

                 c.v = new float[1][1]; c.v[0][0] = 3.0F; float val3 = get();
                 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 3.0F));

                 c.v[0] = new float[1]; c.v[0][0] = 4.0F; float val4 = get();
                 assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 4.0F));
             }

             {
                 c.v = new float[1][1]; float[] val1 = get1();
                 c.v[0] = new float[1]; float[] val2 = get1();
                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1]; float[][] val1 = get2();
                 c.v = new float[1][1]; float[][] val2 = get2();
                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */

     static class FloatArrayDim3 {
         public @Stable float[][][] v;

         public static final FloatArrayDim3 c = new FloatArrayDim3();
         public static float get() { return c.v[0][0][0]; }
         public static float[] get1() { return c.v[0][0]; }
         public static float[][] get2() { return c.v[0]; }
         public static float[][][] get3() { return c.v; }
         public static void test() throws Exception {
             {
                 c.v = new float[1][1][1]; c.v[0][0][0] = 1.0F; float val1 = get();
                                           c.v[0][0][0] = 2.0F; float val2 = get();
                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

                 c.v = new float[1][1][1]; c.v[0][0][0] = 3.0F; float val3 = get();
                 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 3.0F));

                 c.v[0] = new float[1][1]; c.v[0][0][0] = 4.0F; float val4 = get();
                 assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 4.0F));

                 c.v[0][0] = new float[1]; c.v[0][0][0] = 5.0F; float val5 = get();
                 assertEquals(val5, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 5.0F));
             }

             {
                 c.v = new float[1][1][1]; float[] val1 = get1();
                 c.v[0][0] = new float[1]; float[] val2 = get1();
                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1][1]; float[][] val1 = get2();
                 c.v[0] = new float[1][1]; float[][] val2 = get2();
                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1][1]; float[][][] val1 = get3();
                 c.v = new float[1][1][1]; float[][][] val2 = get3();
                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */

     static class FloatArrayDim4 {
         public @Stable float[][][][] v;

         public static final FloatArrayDim4 c = new FloatArrayDim4();
         public static float get() { return c.v[0][0][0][0]; }
         public static float[] get1() { return c.v[0][0][0]; }
         public static float[][] get2() { return c.v[0][0]; }
         public static float[][][] get3() { return c.v[0]; }
         public static float[][][][] get4() { return c.v; }
         public static void test() throws Exception {
             {
                 c.v = new float[1][1][1][1]; c.v[0][0][0][0] = 1.0F; float val1 = get();
                                              c.v[0][0][0][0] = 2.0F; float val2 = get();
                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

                 c.v = new float[1][1][1][1]; c.v[0][0][0][0] = 3.0F; float val3 = get();
                 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 3.0F));

                 c.v[0] = new float[1][1][1]; c.v[0][0][0][0] = 4.0F; float val4 = get();
                 assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 4.0F));

                 c.v[0][0] = new float[1][1]; c.v[0][0][0][0] = 5.0F; float val5 = get();
                 assertEquals(val5, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 5.0F));

                 c.v[0][0][0] = new float[1]; c.v[0][0][0][0] = 6.0F; float val6 = get();
                 assertEquals(val6, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
                                                     : 6.0F));
             }

             {
                 c.v = new float[1][1][1][1]; float[] val1 = get1();
                 c.v[0][0][0] = new float[1]; float[] val2 = get1();
                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1][1][1]; float[][] val1 = get2();
                 c.v[0][0] = new float[1][1]; float[][] val2 = get2();
                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1][1][1]; float[][][] val1 = get3();
                 c.v[0] = new float[1][1][1]; float[][][] val2 = get3();
                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1][1][1]; float[][][][] val1 = get4();
                 c.v = new float[1][1][1][1]; float[][][][] val2 = get4();
                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */
     // Dynamic Dim is higher than static
     static class ObjectArrayLowerDim0 {
         public @Stable Object v;

         public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0();
         public static float get() { return ((float[])c.v)[0]; }
         public static float[] get1() { return (float[])c.v; }

         public static void test() throws Exception {
             {
                 c.v = new float[1]; ((float[])c.v)[0] = 1.0F; float val1 = get();
                                     ((float[])c.v)[0] = 2.0F; float val2 = get();

                 assertEquals(val1, 1.0F);
                 assertEquals(val2, 2.0F);
             }

             {
                 c.v = new float[1]; float[] val1 = get1();
                 c.v = new float[1]; float[] val2 = get1();
                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */

     static class ObjectArrayLowerDim1 {
         public @Stable Object[] v;

         public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();
         public static float get() { return ((float[][])c.v)[0][0]; }
         public static float[] get1() { return (float[])(c.v[0]); }
         public static Object[] get2() { return c.v; }

         public static void test() throws Exception {
             {
                 c.v = new float[1][1]; ((float[][])c.v)[0][0] = 1.0F; float val1 = get();
                                        ((float[][])c.v)[0][0] = 2.0F; float val2 = get();

                 assertEquals(val1, 1.0F);
                 assertEquals(val2, 2.0F);
             }

             {
                 c.v = new float[1][1]; c.v[0] = new float[0]; float[] val1 = get1();
                                        c.v[0] = new float[0]; float[] val2 = get1();

                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[0][0]; Object[] val1 = get2();
                 c.v = new float[0][0]; Object[] val2 = get2();

                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */

     static class ObjectArrayLowerDim2 {
         public @Stable Object[][] v;

         public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2();
         public static float get() { return ((float[][][])c.v)[0][0][0]; }
         public static float[] get1() { return (float[])(c.v[0][0]); }
         public static float[][] get2() { return (float[][])(c.v[0]); }
         public static Object[][] get3() { return c.v; }

         public static void test() throws Exception {
             {
                 c.v = new float[1][1][1]; ((float[][][])c.v)[0][0][0] = 1.0F; float val1 = get();
                                           ((float[][][])c.v)[0][0][0] = 2.0F; float val2 = get();

                 assertEquals(val1, 1.0F);
                 assertEquals(val2, 2.0F);
             }

             {
                 c.v = new float[1][1][1]; c.v[0][0] = new float[0]; float[] val1 = get1();
                                           c.v[0][0] = new float[0]; float[] val2 = get1();

                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[1][1][1]; c.v[0] = new float[0][0]; float[][] val1 = get2();
                                           c.v[0] = new float[0][0]; float[][] val2 = get2();

                 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
             }

             {
                 c.v = new float[0][0][0]; Object[][] val1 = get3();
                 c.v = new float[0][0][0]; Object[][] val2 = get3();

                 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
             }
         }
     }

     /* ==================================================== */

     static class NestedStableField {
         static class A {
             public @Stable float a;

         }
         public @Stable A v;

         public static final NestedStableField c = new NestedStableField();
         public static A get() { return c.v; }
         public static float get1() { return get().a; }

         public static void test() throws Exception {
             {
                 c.v = new A(); c.v.a = 1.0F; A val1 = get();
                                c.v.a = 2.0F; A val2 = get();

                 assertEquals(val1.a, 2.0F);
                 assertEquals(val2.a, 2.0F);
             }

             {
                 c.v = new A(); c.v.a = 1.0F; float val1 = get1();
                                c.v.a = 2.0F; float val2 = get1();
                 c.v = new A(); c.v.a = 3.0F; float val3 = get1();

                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
                 assertEquals(val3, (isStableEnabled ? 1.0F : 3.0F));
             }
         }
     }

     /* ==================================================== */

     static class NestedStableField1 {
         static class A {
             public @Stable float a;
             public @Stable A next;
         }
         public @Stable A v;

         public static final NestedStableField1 c = new NestedStableField1();
         public static A get() { return c.v.next.next.next.next.next.next.next; }
         public static float get1() { return get().a; }

         public static void test() throws Exception {
             {
                 c.v = new A(); c.v.next = new A();   c.v.next.next  = c.v;
                                c.v.a = 1.0F; c.v.next.a = 1.0F; A val1 = get();
                                c.v.a = 2.0F; c.v.next.a = 2.0F; A val2 = get();

                 assertEquals(val1.a, 2.0F);
                 assertEquals(val2.a, 2.0F);
             }

             {
                 c.v = new A(); c.v.next = c.v;
                                c.v.a = 1.0F; float val1 = get1();
                                c.v.a = 2.0F; float val2 = get1();
                 c.v = new A(); c.v.next = c.v;
                                c.v.a = 3.0F; float val3 = get1();

                 assertEquals(val1, 1.0F);
                 assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
                 assertEquals(val3, (isStableEnabled ? 1.0F : 3.0F));
             }
         }
     }
    /* ==================================================== */

     static class NestedStableField2 {
         static class A {
             public @Stable float a;
             public @Stable A left;
             public         A right;
         }

         public @Stable A v;

         public static final NestedStableField2 c = new NestedStableField2();
         public static float get() { return c.v.left.left.left.a; }
         public static float get1() { return c.v.left.left.right.left.a; }

         public static void test() throws Exception {
             {
                 c.v = new A(); c.v.left = c.v.right = c.v;
                                c.v.a = 1.0F; float val1 = get(); float val2 = get1();
                                c.v.a = 2.0F; float val3 = get(); float val4 = get1();

                 assertEquals(val1, 1.0F);
                 assertEquals(val3, (isStableEnabled ? 1.0F : 2.0F));

                 assertEquals(val2, 1.0F);
                 assertEquals(val4, 2.0F);
             }
         }
     }

     /* ==================================================== */

     static class NestedStableField3 {
         static class A {
             public @Stable float a;
             public @Stable A[] left;
             public         A[] right;
         }

         public @Stable A[] v;

         public static final NestedStableField3 c = new NestedStableField3();
         public static float get() { return c.v[0].left[1].left[0].left[1].a; }
         public static float get1() { return c.v[1].left[0].left[1].right[0].left[1].a; }

         public static void test() throws Exception {
             {
                 A elem = new A();
                 c.v = new A[] { elem, elem }; c.v[0].left = c.v[0].right = c.v;
                                elem.a = 1.0F; float val1 = get(); float val2 = get1();
                                elem.a = 2.0F; float val3 = get(); float val4 = get1();

                 assertEquals(val1, 1.0F);
                 assertEquals(val3, (isServerWithStable ? 1.0F : 2.0F));

                 assertEquals(val2, 1.0F);
                 assertEquals(val4, 2.0F);
             }
         }
     }

     /* ==================================================== */
     // Auxiliary methods
     static void assertEquals(float i, float j) { if (i != j)  throw new AssertionError(i + " != " + j); }
     static void assertTrue(boolean b) { if (!b)  throw new AssertionError(); }

     static boolean failed = false;

     public static void run(Class<?> test) {
         Throwable ex = null;
         System.out.print(test.getName()+": ");
         try {
             test.getMethod("test").invoke(null);
         } catch (InvocationTargetException e) {
             ex = e.getCause();
         } catch (Throwable e) {
             ex = e;
         } finally {
             if (ex == null) {
                 System.out.println("PASSED");
             } else {
                 failed = true;
                 System.out.println("FAILED");
                 ex.printStackTrace(System.out);
             }
         }
     }
 }
	/*
	* Copyright (c) 2014, 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 TestStableFloat
	* @summary tests on stable fields and arrays
	* @library /testlibrary /testlibrary/whitebox
	* @build TestStableFloat StableConfiguration sun.hotspot.WhiteBox
	* @run main ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
	* @run main ClassFileInstaller
	* java/lang/invoke/StableConfiguration
	* java/lang/invoke/TestStableFloat
	* java/lang/invoke/TestStableFloat$FloatStable
	* java/lang/invoke/TestStableFloat$StaticFloatStable
	* java/lang/invoke/TestStableFloat$VolatileFloatStable
	* java/lang/invoke/TestStableFloat$FloatArrayDim1
	* java/lang/invoke/TestStableFloat$FloatArrayDim2
	* java/lang/invoke/TestStableFloat$FloatArrayDim3
	* java/lang/invoke/TestStableFloat$FloatArrayDim4
	* java/lang/invoke/TestStableFloat$ObjectArrayLowerDim0
	* java/lang/invoke/TestStableFloat$ObjectArrayLowerDim1
	* java/lang/invoke/TestStableFloat$NestedStableField
	* java/lang/invoke/TestStableFloat$NestedStableField$A
	* java/lang/invoke/TestStableFloat$NestedStableField1
	* java/lang/invoke/TestStableFloat$NestedStableField1$A
	* java/lang/invoke/TestStableFloat$NestedStableField2
	* java/lang/invoke/TestStableFloat$NestedStableField2$A
	* java/lang/invoke/TestStableFloat$NestedStableField3
	* java/lang/invoke/TestStableFloat$NestedStableField3$A
	* java/lang/invoke/TestStableFloat$DefaultValue
	* java/lang/invoke/TestStableFloat$DefaultStaticValue
	* java/lang/invoke/TestStableFloat$ObjectArrayLowerDim2
	*
	* @run main/othervm -Xbootclasspath/a:.
	* -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
	* -XX:-TieredCompilation
	* -XX:+FoldStableValues
	* -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
	* java.lang.invoke.TestStableFloat
	* @run main/othervm -Xbootclasspath/a:.
	* -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
	* -XX:-TieredCompilation
	* -XX:-FoldStableValues
	* -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
	* java.lang.invoke.TestStableFloat
	*
	* @run main/othervm -Xbootclasspath/a:.
	* -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
	* -XX:+TieredCompilation -XX:TieredStopAtLevel=1
	* -XX:+FoldStableValues
	* -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
	* java.lang.invoke.TestStableFloat
	* @run main/othervm -Xbootclasspath/a:.
	* -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
	* -XX:+TieredCompilation -XX:TieredStopAtLevel=1
	* -XX:-FoldStableValues
	* -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
	* java.lang.invoke.TestStableFloat
	*
	*/
	package java.lang.invoke;

	import java.lang.reflect.InvocationTargetException;

	public class TestStableFloat {
	static final boolean isStableEnabled = StableConfiguration.isStableEnabled;
	static final boolean isServerWithStable = StableConfiguration.isServerWithStable;

	public static void main(String[] args) throws Exception {
	run(DefaultValue.class);
	run(FloatStable.class);
	run(DefaultStaticValue.class);
	run(StaticFloatStable.class);
	run(VolatileFloatStable.class);

	// @Stable arrays: Dim 1-4
	run(FloatArrayDim1.class);
	run(FloatArrayDim2.class);
	run(FloatArrayDim3.class);
	run(FloatArrayDim4.class);

	// @Stable Object field: dynamic arrays
	run(ObjectArrayLowerDim0.class);
	run(ObjectArrayLowerDim1.class);
	run(ObjectArrayLowerDim2.class);

	// Nested @Stable fields
	run(NestedStableField.class);
	run(NestedStableField1.class);
	run(NestedStableField2.class);
	run(NestedStableField3.class);

	if (failed) {
	throw new Error("TEST FAILED");
	}
	}

	/* ==================================================== */

	static class DefaultValue {
	public @Stable float v;

	public static final DefaultValue c = new DefaultValue();
	public static float get() { return c.v; }
	public static void test() throws Exception {
	float val1 = get();
	c.v = 1.0F; float val2 = get();
	assertEquals(val1, 0F);
	assertEquals(val2, 1.0F);
	}
	}

	/* ==================================================== */

	static class FloatStable {
	public @Stable float v;

	public static final FloatStable c = new FloatStable();
	public static float get() { return c.v; }
	public static void test() throws Exception {
	c.v = 1.0F; float val1 = get();
	c.v = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
	}
	}

	/* ==================================================== */

	static class DefaultStaticValue {
	public static @Stable float v;

	public static final DefaultStaticValue c = new DefaultStaticValue();
	public static float get() { return c.v; }
	public static void test() throws Exception {
	float val1 = get();
	c.v = 1.0F; float val2 = get();
	assertEquals(val1, 0F);
	assertEquals(val2, 1.0F);
	}
	}

	/* ==================================================== */

	static class StaticFloatStable {
	public static @Stable float v;

	public static final StaticFloatStable c = new StaticFloatStable();
	public static float get() { return c.v; }
	public static void test() throws Exception {
	c.v = 1.0F; float val1 = get();
	c.v = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
	}
	}

	/* ==================================================== */

	static class VolatileFloatStable {
	public @Stable volatile float v;

	public static final VolatileFloatStable c = new VolatileFloatStable();
	public static float get() { return c.v; }
	public static void test() throws Exception {
	c.v = 1.0F; float val1 = get();
	c.v = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
	}
	}

	/* ==================================================== */
	// @Stable array == field && all components are stable

	static class FloatArrayDim1 {
	public @Stable float[] v;

	public static final FloatArrayDim1 c = new FloatArrayDim1();
	public static float get() { return c.v[0]; }
	public static float get1() { return c.v[10]; }
	public static float[] get2() { return c.v; }
	public static void test() throws Exception {
	{
	c.v = new float[1]; c.v[0] = 1.0F; float val1 = get();
	c.v[0] = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

	c.v = new float[1]; c.v[0] = 3.0F; float val3 = get();
	assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 3.0F));
	}

	{
	c.v = new float[20]; c.v[10] = 1.0F; float val1 = get1();
	c.v[10] = 2.0F; float val2 = get1();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

	c.v = new float[20]; c.v[10] = 3.0F; float val3 = get1();
	assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 3.0F));
	}

	{
	c.v = new float[1]; float[] val1 = get2();
	c.v = new float[1]; float[] val2 = get2();
	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */

	static class FloatArrayDim2 {
	public @Stable float[][] v;

	public static final FloatArrayDim2 c = new FloatArrayDim2();
	public static float get() { return c.v[0][0]; }
	public static float[] get1() { return c.v[0]; }
	public static float[][] get2() { return c.v; }
	public static void test() throws Exception {
	{
	c.v = new float[1][1]; c.v[0][0] = 1.0F; float val1 = get();
	c.v[0][0] = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

	c.v = new float[1][1]; c.v[0][0] = 3.0F; float val3 = get();
	assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 3.0F));

	c.v[0] = new float[1]; c.v[0][0] = 4.0F; float val4 = get();
	assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 4.0F));
	}

	{
	c.v = new float[1][1]; float[] val1 = get1();
	c.v[0] = new float[1]; float[] val2 = get1();
	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1]; float[][] val1 = get2();
	c.v = new float[1][1]; float[][] val2 = get2();
	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */

	static class FloatArrayDim3 {
	public @Stable float[][][] v;

	public static final FloatArrayDim3 c = new FloatArrayDim3();
	public static float get() { return c.v[0][0][0]; }
	public static float[] get1() { return c.v[0][0]; }
	public static float[][] get2() { return c.v[0]; }
	public static float[][][] get3() { return c.v; }
	public static void test() throws Exception {
	{
	c.v = new float[1][1][1]; c.v[0][0][0] = 1.0F; float val1 = get();
	c.v[0][0][0] = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

	c.v = new float[1][1][1]; c.v[0][0][0] = 3.0F; float val3 = get();
	assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 3.0F));

	c.v[0] = new float[1][1]; c.v[0][0][0] = 4.0F; float val4 = get();
	assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 4.0F));

	c.v[0][0] = new float[1]; c.v[0][0][0] = 5.0F; float val5 = get();
	assertEquals(val5, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 5.0F));
	}

	{
	c.v = new float[1][1][1]; float[] val1 = get1();
	c.v[0][0] = new float[1]; float[] val2 = get1();
	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1][1]; float[][] val1 = get2();
	c.v[0] = new float[1][1]; float[][] val2 = get2();
	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1][1]; float[][][] val1 = get3();
	c.v = new float[1][1][1]; float[][][] val2 = get3();
	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */

	static class FloatArrayDim4 {
	public @Stable float[][][][] v;

	public static final FloatArrayDim4 c = new FloatArrayDim4();
	public static float get() { return c.v[0][0][0][0]; }
	public static float[] get1() { return c.v[0][0][0]; }
	public static float[][] get2() { return c.v[0][0]; }
	public static float[][][] get3() { return c.v[0]; }
	public static float[][][][] get4() { return c.v; }
	public static void test() throws Exception {
	{
	c.v = new float[1][1][1][1]; c.v[0][0][0][0] = 1.0F; float val1 = get();
	c.v[0][0][0][0] = 2.0F; float val2 = get();
	assertEquals(val1, 1.0F);
	assertEquals(val2, (isServerWithStable ? 1.0F : 2.0F));

	c.v = new float[1][1][1][1]; c.v[0][0][0][0] = 3.0F; float val3 = get();
	assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 3.0F));

	c.v[0] = new float[1][1][1]; c.v[0][0][0][0] = 4.0F; float val4 = get();
	assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 4.0F));

	c.v[0][0] = new float[1][1]; c.v[0][0][0][0] = 5.0F; float val5 = get();
	assertEquals(val5, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 5.0F));

	c.v[0][0][0] = new float[1]; c.v[0][0][0][0] = 6.0F; float val6 = get();
	assertEquals(val6, (isStableEnabled ? (isServerWithStable ? 1.0F : 2.0F)
	: 6.0F));
	}

	{
	c.v = new float[1][1][1][1]; float[] val1 = get1();
	c.v[0][0][0] = new float[1]; float[] val2 = get1();
	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1][1][1]; float[][] val1 = get2();
	c.v[0][0] = new float[1][1]; float[][] val2 = get2();
	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1][1][1]; float[][][] val1 = get3();
	c.v[0] = new float[1][1][1]; float[][][] val2 = get3();
	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1][1][1]; float[][][][] val1 = get4();
	c.v = new float[1][1][1][1]; float[][][][] val2 = get4();
	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */
	// Dynamic Dim is higher than static
	static class ObjectArrayLowerDim0 {
	public @Stable Object v;

	public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0();
	public static float get() { return ((float[])c.v)[0]; }
	public static float[] get1() { return (float[])c.v; }

	public static void test() throws Exception {
	{
	c.v = new float[1]; ((float[])c.v)[0] = 1.0F; float val1 = get();
	((float[])c.v)[0] = 2.0F; float val2 = get();

	assertEquals(val1, 1.0F);
	assertEquals(val2, 2.0F);
	}

	{
	c.v = new float[1]; float[] val1 = get1();
	c.v = new float[1]; float[] val2 = get1();
	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */

	static class ObjectArrayLowerDim1 {
	public @Stable Object[] v;

	public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();
	public static float get() { return ((float[][])c.v)[0][0]; }
	public static float[] get1() { return (float[])(c.v[0]); }
	public static Object[] get2() { return c.v; }

	public static void test() throws Exception {
	{
	c.v = new float[1][1]; ((float[][])c.v)[0][0] = 1.0F; float val1 = get();
	((float[][])c.v)[0][0] = 2.0F; float val2 = get();

	assertEquals(val1, 1.0F);
	assertEquals(val2, 2.0F);
	}

	{
	c.v = new float[1][1]; c.v[0] = new float[0]; float[] val1 = get1();
	c.v[0] = new float[0]; float[] val2 = get1();

	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[0][0]; Object[] val1 = get2();
	c.v = new float[0][0]; Object[] val2 = get2();

	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */

	static class ObjectArrayLowerDim2 {
	public @Stable Object[][] v;

	public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2();
	public static float get() { return ((float[][][])c.v)[0][0][0]; }
	public static float[] get1() { return (float[])(c.v[0][0]); }
	public static float[][] get2() { return (float[][])(c.v[0]); }
	public static Object[][] get3() { return c.v; }

	public static void test() throws Exception {
	{
	c.v = new float[1][1][1]; ((float[][][])c.v)[0][0][0] = 1.0F; float val1 = get();
	((float[][][])c.v)[0][0][0] = 2.0F; float val2 = get();

	assertEquals(val1, 1.0F);
	assertEquals(val2, 2.0F);
	}

	{
	c.v = new float[1][1][1]; c.v[0][0] = new float[0]; float[] val1 = get1();
	c.v[0][0] = new float[0]; float[] val2 = get1();

	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[1][1][1]; c.v[0] = new float[0][0]; float[][] val1 = get2();
	c.v[0] = new float[0][0]; float[][] val2 = get2();

	assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
	}

	{
	c.v = new float[0][0][0]; Object[][] val1 = get3();
	c.v = new float[0][0][0]; Object[][] val2 = get3();

	assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
	}
	}
	}

	/* ==================================================== */

	static class NestedStableField {
	static class A {
	public @Stable float a;

	}
	public @Stable A v;

	public static final NestedStableField c = new NestedStableField();
	public static A get() { return c.v; }
	public static float get1() { return get().a; }

	public static void test() throws Exception {
	{
	c.v = new A(); c.v.a = 1.0F; A val1 = get();
	c.v.a = 2.0F; A val2 = get();

	assertEquals(val1.a, 2.0F);
	assertEquals(val2.a, 2.0F);
	}

	{
	c.v = new A(); c.v.a = 1.0F; float val1 = get1();
	c.v.a = 2.0F; float val2 = get1();
	c.v = new A(); c.v.a = 3.0F; float val3 = get1();

	assertEquals(val1, 1.0F);
	assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
	assertEquals(val3, (isStableEnabled ? 1.0F : 3.0F));
	}
	}
	}

	/* ==================================================== */

	static class NestedStableField1 {
	static class A {
	public @Stable float a;
	public @Stable A next;
	}
	public @Stable A v;

	public static final NestedStableField1 c = new NestedStableField1();
	public static A get() { return c.v.next.next.next.next.next.next.next; }
	public static float get1() { return get().a; }

	public static void test() throws Exception {
	{
	c.v = new A(); c.v.next = new A(); c.v.next.next = c.v;
	c.v.a = 1.0F; c.v.next.a = 1.0F; A val1 = get();
	c.v.a = 2.0F; c.v.next.a = 2.0F; A val2 = get();

	assertEquals(val1.a, 2.0F);
	assertEquals(val2.a, 2.0F);
	}

	{
	c.v = new A(); c.v.next = c.v;
	c.v.a = 1.0F; float val1 = get1();
	c.v.a = 2.0F; float val2 = get1();
	c.v = new A(); c.v.next = c.v;
	c.v.a = 3.0F; float val3 = get1();

	assertEquals(val1, 1.0F);
	assertEquals(val2, (isStableEnabled ? 1.0F : 2.0F));
	assertEquals(val3, (isStableEnabled ? 1.0F : 3.0F));
	}
	}
	}
	/* ==================================================== */

	static class NestedStableField2 {
	static class A {
	public @Stable float a;
	public @Stable A left;
	public A right;
	}

	public @Stable A v;

	public static final NestedStableField2 c = new NestedStableField2();
	public static float get() { return c.v.left.left.left.a; }
	public static float get1() { return c.v.left.left.right.left.a; }

	public static void test() throws Exception {
	{
	c.v = new A(); c.v.left = c.v.right = c.v;
	c.v.a = 1.0F; float val1 = get(); float val2 = get1();
	c.v.a = 2.0F; float val3 = get(); float val4 = get1();

	assertEquals(val1, 1.0F);
	assertEquals(val3, (isStableEnabled ? 1.0F : 2.0F));

	assertEquals(val2, 1.0F);
	assertEquals(val4, 2.0F);
	}
	}
	}

	/* ==================================================== */

	static class NestedStableField3 {
	static class A {
	public @Stable float a;
	public @Stable A[] left;
	public A[] right;
	}

	public @Stable A[] v;

	public static final NestedStableField3 c = new NestedStableField3();
	public static float get() { return c.v[0].left[1].left[0].left[1].a; }
	public static float get1() { return c.v[1].left[0].left[1].right[0].left[1].a; }

	public static void test() throws Exception {
	{
	A elem = new A();
	c.v = new A[] { elem, elem }; c.v[0].left = c.v[0].right = c.v;
	elem.a = 1.0F; float val1 = get(); float val2 = get1();
	elem.a = 2.0F; float val3 = get(); float val4 = get1();

	assertEquals(val1, 1.0F);
	assertEquals(val3, (isServerWithStable ? 1.0F : 2.0F));

	assertEquals(val2, 1.0F);
	assertEquals(val4, 2.0F);
	}
	}
	}

	/* ==================================================== */
	// Auxiliary methods
	static void assertEquals(float i, float j) { if (i != j) throw new AssertionError(i + " != " + j); }
	static void assertTrue(boolean b) { if (!b) throw new AssertionError(); }

	static boolean failed = false;

	public static void run(Class<?> test) {
	Throwable ex = null;
	System.out.print(test.getName()+": ");
	try {
	test.getMethod("test").invoke(null);
	} catch (InvocationTargetException e) {
	ex = e.getCause();
	} catch (Throwable e) {
	ex = e;
	} finally {
	if (ex == null) {
	System.out.println("PASSED");
	} else {
	failed = true;
	System.out.println("FAILED");
	ex.printStackTrace(System.out);
	}
	}
	}
	}