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test/hotspot/jtreg/compiler/escapeAnalysis/TestGetClass.java

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19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * @test
26  * @bug 8218201
27  * @summary BCEscapeAnalyzer assigns wrong escape state to getClass return value.
28  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_getClass
29  *                   -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestGetClass::test
30  *                   -XX:+PrintCompilation compiler.escapeAnalysis.TestGetClass
31  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:ControlIntrinsic=-_getClass
32  *                   -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestGetClass::test
33  *                   -XX:+PrintCompilation compiler.escapeAnalysis.TestGetClass
34  */
35 
36 package compiler.escapeAnalysis;
37 
38 public class TestGetClass {
39     static Object obj = new Object();
40 
41     public static boolean test() {
42         if (obj.getClass() == Object.class) {
43             synchronized (obj) {
44                 return true;
45             }
46         }
47         return false;
48     }
49 
50     public static void main(String[] args) {
51         if (!test()) {
52             throw new RuntimeException("Test failed");
53         }
54     }
55 }

19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * @test
26  * @bug 8218201
27  * @summary BCEscapeAnalyzer assigns wrong escape state to getClass return value.
28  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_getClass
29  *                   -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestGetClass::test
30  *                   -XX:+PrintCompilation compiler.escapeAnalysis.TestGetClass
31  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:ControlIntrinsic=-_getClass
32  *                   -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestGetClass::test
33  *                   -XX:+PrintCompilation compiler.escapeAnalysis.TestGetClass
34  */
35 
36 package compiler.escapeAnalysis;
37 
38 public class TestGetClass {
39     static Object obj = new Object() {};
40 
41     public static boolean test() {
42         if (obj.getClass().getSuperclass() == Object.class) {
43             synchronized (obj) {
44                 return true;
45             }
46         }
47         return false;
48     }
49 
50     public static void main(String[] args) {
51         if (!test()) {
52             throw new RuntimeException("Test failed");
53         }
54     }
55 }
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