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test/compiler/stable/TestStableObject.java@fb9d124d9192
test/compiler/stable/TestStableObject.java
Wed, 21 May 2014 10:56:41 -0700
- author
- katleman
- date
- Wed, 21 May 2014 10:56:41 -0700
- changeset 6672
- fb9d124d9192
- parent 6528
- 248ff38d2950
- child 6747
- ee1c924763d2
- permissions
- -rw-r--r--
Added tag jdk8u20-b15 for changeset 8c785f9bde6f
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
26 /*
27 * @test TestStableObject
28 * @summary tests on stable fields and arrays
29 * @library /testlibrary
30 * @compile -XDignore.symbol.file TestStableObject.java
31 * @run main ClassFileInstaller
32 * java/lang/invoke/TestStableObject
33 * java/lang/invoke/TestStableObject$ObjectStable
34 * java/lang/invoke/TestStableObject$StaticObjectStable
35 * java/lang/invoke/TestStableObject$VolatileObjectStable
36 * java/lang/invoke/TestStableObject$ObjectArrayDim1
37 * java/lang/invoke/TestStableObject$ObjectArrayDim2
38 * java/lang/invoke/TestStableObject$ObjectArrayDim3
39 * java/lang/invoke/TestStableObject$ObjectArrayDim4
40 * java/lang/invoke/TestStableObject$ObjectArrayLowerDim0
41 * java/lang/invoke/TestStableObject$ObjectArrayLowerDim1
42 * java/lang/invoke/TestStableObject$NestedStableField
43 * java/lang/invoke/TestStableObject$NestedStableField$A
44 * java/lang/invoke/TestStableObject$NestedStableField1
45 * java/lang/invoke/TestStableObject$NestedStableField1$A
46 * java/lang/invoke/TestStableObject$NestedStableField2
47 * java/lang/invoke/TestStableObject$NestedStableField2$A
48 * java/lang/invoke/TestStableObject$NestedStableField3
49 * java/lang/invoke/TestStableObject$NestedStableField3$A
50 * java/lang/invoke/TestStableObject$Values
51 * java/lang/invoke/TestStableObject$DefaultValue
52 * java/lang/invoke/TestStableObject$ObjectArrayLowerDim2
53 *
54 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions
55 * -XX:+UnlockDiagnosticVMOptions -XX:+FoldStableValues -XX:+UseCompressedOop
56 * -server -XX:-TieredCompilation -Xcomp
57 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
58 * java.lang.invoke.TestStableObject
59 *
60 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions
61 * -XX:+UnlockDiagnosticVMOptions -XX:+FoldStableValues -XX:-UseCompressedOop
62 * -server -XX:-TieredCompilation -Xcomp
63 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
64 * java.lang.invoke.TestStableObject
65 *
66 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions
67 * -XX:+UnlockDiagnosticVMOptions -XX:-FoldStableValues -XX:+UseCompressedOop
68 * -server -XX:-TieredCompilation -Xcomp
69 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
70 * java.lang.invoke.TestStableObject
71 *
72 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions
73 * -XX:+UnlockDiagnosticVMOptions -XX:-FoldStableValues -XX:-UseCompressedOop
74 * -server -XX:-TieredCompilation -Xcomp
75 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
76 * java.lang.invoke.TestStableObject
77 */
78 package java.lang.invoke;
80 import com.sun.management.HotSpotDiagnosticMXBean;
81 import com.sun.management.VMOption;
82 import sun.management.ManagementFactoryHelper;
83 import java.lang.reflect.InvocationTargetException;
85 public class TestStableObject {
86 public static void main(String[] args) throws Exception {
87 System.out.println("@Stable enabled: "+isStableEnabled);
88 System.out.println();
90 run(DefaultValue.class);
91 run(ObjectStable.class);
92 run(StaticObjectStable.class);
93 run(VolatileObjectStable.class);
95 // @Stable arrays: Dim 1-4
96 run(ObjectArrayDim1.class);
97 run(ObjectArrayDim2.class);
98 run(ObjectArrayDim3.class);
99 run(ObjectArrayDim4.class);
101 // @Stable Object field: dynamic arrays
102 run(ObjectArrayLowerDim0.class);
103 run(ObjectArrayLowerDim1.class);
104 run(ObjectArrayLowerDim2.class);
106 // Nested @Stable fields
107 run(NestedStableField.class);
108 run(NestedStableField1.class);
109 run(NestedStableField2.class);
110 run(NestedStableField3.class);
112 if (failed) {
113 throw new Error("TEST FAILED");
114 }
115 }
117 /* ==================================================== */
119 enum Values {A, B, C, D, E, F}
121 static class DefaultValue {
122 public @Stable Object v;
124 public static final DefaultValue c = new DefaultValue();
125 public static Object get() { return c.v; }
126 public static void test() throws Exception {
127 Object val1 = get();
128 c.v = Values.A; Object val2 = get();
129 assertEquals(val1, null);
130 assertEquals(val2, Values.A);
131 }
132 }
134 /* ==================================================== */
136 static class ObjectStable {
137 public @Stable Values v;
139 public static final ObjectStable c = new ObjectStable ();
140 public static Values get() { return c.v; }
141 public static void test() throws Exception {
142 c.v = Values.A; Values val1 = get();
143 c.v = Values.B; Values val2 = get();
144 assertEquals(val1, Values.A);
145 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
146 }
147 }
149 /* ==================================================== */
151 static class StaticObjectStable {
152 public static @Stable Values v;
154 public static final ObjectStable c = new ObjectStable ();
155 public static Values get() { return c.v; }
156 public static void test() throws Exception {
157 c.v = Values.A; Values val1 = get();
158 c.v = Values.B; Values val2 = get();
159 assertEquals(val1, Values.A);
160 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
161 }
162 }
164 /* ==================================================== */
166 static class VolatileObjectStable {
167 public @Stable volatile Values v;
169 public static final VolatileObjectStable c = new VolatileObjectStable ();
170 public static Values get() { return c.v; }
171 public static void test() throws Exception {
172 c.v = Values.A; Values val1 = get();
173 c.v = Values.B; Values val2 = get();
174 assertEquals(val1, Values.A);
175 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
176 }
177 }
179 /* ==================================================== */
180 // @Stable array == field && all components are stable
182 static class ObjectArrayDim1 {
183 public @Stable Object[] v;
185 public static final ObjectArrayDim1 c = new ObjectArrayDim1();
186 public static Object get() { return c.v[0]; }
187 public static Object get1() { return c.v[10]; }
188 public static Object[] get2() { return c.v; }
189 public static void test() throws Exception {
190 {
191 c.v = new Object[1]; c.v[0] = Values.A; Object val1 = get();
192 c.v[0] = Values.B; Object val2 = get();
193 assertEquals(val1, Values.A);
194 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
196 c.v = new Object[1]; c.v[0] = Values.C; Object val3 = get();
197 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
198 }
200 {
201 c.v = new Object[20]; c.v[10] = Values.A; Object val1 = get1();
202 c.v[10] = Values.B; Object val2 = get1();
203 assertEquals(val1, Values.A);
204 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
206 c.v = new Object[20]; c.v[10] = Values.C; Object val3 = get1();
207 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
208 }
210 {
211 c.v = new Object[1]; Object[] val1 = get2();
212 c.v = new Object[1]; Object[] val2 = get2();
213 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
214 }
215 }
216 }
218 /* ==================================================== */
220 static class ObjectArrayDim2 {
221 public @Stable Object[][] v;
223 public static final ObjectArrayDim2 c = new ObjectArrayDim2();
224 public static Object get() { return c.v[0][0]; }
225 public static Object[] get1() { return c.v[0]; }
226 public static Object[][] get2() { return c.v; }
227 public static void test() throws Exception {
228 {
229 c.v = new Object[1][1]; c.v[0][0] = Values.A; Object val1 = get();
230 c.v[0][0] = Values.B; Object val2 = get();
231 assertEquals(val1, Values.A);
232 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
234 c.v = new Object[1][1]; c.v[0][0] = Values.C; Object val3 = get();
235 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
237 c.v[0] = new Object[1]; c.v[0][0] = Values.D; Object val4 = get();
238 assertEquals(val4, (isStableEnabled ? Values.A : Values.D));
239 }
241 {
242 c.v = new Object[1][1]; Object[] val1 = get1();
243 c.v[0] = new Object[1]; Object[] val2 = get1();
244 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
245 }
247 {
248 c.v = new Object[1][1]; Object[][] val1 = get2();
249 c.v = new Object[1][1]; Object[][] val2 = get2();
250 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
251 }
252 }
253 }
255 /* ==================================================== */
257 static class ObjectArrayDim3 {
258 public @Stable Object[][][] v;
260 public static final ObjectArrayDim3 c = new ObjectArrayDim3();
261 public static Object get() { return c.v[0][0][0]; }
262 public static Object[] get1() { return c.v[0][0]; }
263 public static Object[][] get2() { return c.v[0]; }
264 public static Object[][][] get3() { return c.v; }
265 public static void test() throws Exception {
266 {
267 c.v = new Object[1][1][1]; c.v[0][0][0] = Values.A; Object val1 = get();
268 c.v[0][0][0] = Values.B; Object val2 = get();
269 assertEquals(val1, Values.A);
270 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
272 c.v = new Object[1][1][1]; c.v[0][0][0] = Values.C; Object val3 = get();
273 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
275 c.v[0] = new Object[1][1]; c.v[0][0][0] = Values.D; Object val4 = get();
276 assertEquals(val4, (isStableEnabled ? Values.A : Values.D));
278 c.v[0][0] = new Object[1]; c.v[0][0][0] = Values.E; Object val5 = get();
279 assertEquals(val5, (isStableEnabled ? Values.A : Values.E));
280 }
282 {
283 c.v = new Object[1][1][1]; Object[] val1 = get1();
284 c.v[0][0] = new Object[1]; Object[] val2 = get1();
285 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
286 }
288 {
289 c.v = new Object[1][1][1]; Object[][] val1 = get2();
290 c.v[0] = new Object[1][1]; Object[][] val2 = get2();
291 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
292 }
294 {
295 c.v = new Object[1][1][1]; Object[][][] val1 = get3();
296 c.v = new Object[1][1][1]; Object[][][] val2 = get3();
297 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
298 }
299 }
300 }
302 /* ==================================================== */
304 static class ObjectArrayDim4 {
305 public @Stable Object[][][][] v;
307 public static final ObjectArrayDim4 c = new ObjectArrayDim4();
308 public static Object get() { return c.v[0][0][0][0]; }
309 public static Object[] get1() { return c.v[0][0][0]; }
310 public static Object[][] get2() { return c.v[0][0]; }
311 public static Object[][][] get3() { return c.v[0]; }
312 public static Object[][][][] get4() { return c.v; }
313 public static void test() throws Exception {
314 {
315 c.v = new Object[1][1][1][1]; c.v[0][0][0][0] = Values.A; Object val1 = get();
316 c.v[0][0][0][0] = Values.B; Object val2 = get();
317 assertEquals(val1, Values.A);
318 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
320 c.v = new Object[1][1][1][1]; c.v[0][0][0][0] = Values.C; Object val3 = get();
321 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
323 c.v[0] = new Object[1][1][1]; c.v[0][0][0][0] = Values.D; Object val4 = get();
324 assertEquals(val4, (isStableEnabled ? Values.A : Values.D));
326 c.v[0][0] = new Object[1][1]; c.v[0][0][0][0] = Values.E; Object val5 = get();
327 assertEquals(val5, (isStableEnabled ? Values.A : Values.E));
329 c.v[0][0][0] = new Object[1]; c.v[0][0][0][0] = Values.F; Object val6 = get();
330 assertEquals(val6, (isStableEnabled ? Values.A : Values.F));
331 }
333 {
334 c.v = new Object[1][1][1][1]; Object[] val1 = get1();
335 c.v[0][0][0] = new Object[1]; Object[] val2 = get1();
336 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
337 }
339 {
340 c.v = new Object[1][1][1][1]; Object[][] val1 = get2();
341 c.v[0][0] = new Object[1][1]; Object[][] val2 = get2();
342 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
343 }
345 {
346 c.v = new Object[1][1][1][1]; Object[][][] val1 = get3();
347 c.v[0] = new Object[1][1][1]; Object[][][] val2 = get3();
348 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
349 }
351 {
352 c.v = new Object[1][1][1][1]; Object[][][][] val1 = get4();
353 c.v = new Object[1][1][1][1]; Object[][][][] val2 = get4();
354 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
355 }
357 }
358 }
360 /* ==================================================== */
361 // Dynamic Dim is higher than static
363 static class ObjectArrayLowerDim0 {
364 public @Stable Object v;
366 public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0();
367 public static Object get() { return ((Object[])c.v)[0]; }
368 public static Object[] get1() { return (Object[])c.v; }
370 public static void test() throws Exception {
371 {
372 c.v = new Object[1]; ((Object[])c.v)[0] = Values.A; Object val1 = get();
373 ((Object[])c.v)[0] = Values.B; Object val2 = get();
375 assertEquals(val1, Values.A);
376 assertEquals(val2, Values.B);
377 }
379 {
380 c.v = new Object[1]; Object[] val1 = get1();
381 c.v = new Object[1]; Object[] val2 = get1();
382 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
383 }
384 }
385 }
387 /* ==================================================== */
389 static class ObjectArrayLowerDim1 {
390 public @Stable Object[] v;
392 public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();
393 public static Object get() { return ((Object[][])c.v)[0][0]; }
394 public static Object[] get1() { return (Object[])(c.v[0]); }
395 public static Object[] get2() { return c.v; }
397 public static void test() throws Exception {
398 {
399 c.v = new Object[1][1]; ((Object[][])c.v)[0][0] = Values.A; Object val1 = get();
400 ((Object[][])c.v)[0][0] = Values.B; Object val2 = get();
402 assertEquals(val1, Values.A);
403 assertEquals(val2, Values.B);
404 }
406 {
407 c.v = new Object[1][1]; c.v[0] = new Object[0]; Object[] val1 = get1();
408 c.v[0] = new Object[0]; Object[] val2 = get1();
410 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
411 }
413 {
414 c.v = new Object[0][0]; Object[] val1 = get2();
415 c.v = new Object[0][0]; Object[] val2 = get2();
417 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
418 }
419 }
420 }
422 /* ==================================================== */
424 static class ObjectArrayLowerDim2 {
425 public @Stable Object[][] v;
427 public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2();
428 public static Object get() { return ((Object[][][])c.v)[0][0][0]; }
429 public static Object[] get1() { return (Object[])(c.v[0][0]); }
430 public static Object[][] get2() { return (Object[][])(c.v[0]); }
431 public static Object[][] get3() { return c.v; }
433 public static void test() throws Exception {
434 {
435 c.v = new Object[1][1][1]; ((Object[][][])c.v)[0][0][0] = Values.A; Object val1 = get();
436 ((Object[][][])c.v)[0][0][0] = Values.B; Object val2 = get();
438 assertEquals(val1, Values.A);
439 assertEquals(val2, Values.B);
440 }
442 {
443 c.v = new Object[1][1][1]; c.v[0][0] = new Object[0]; Object[] val1 = get1();
444 c.v[0][0] = new Object[0]; Object[] val2 = get1();
446 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
447 }
449 {
450 c.v = new Object[1][1][1]; c.v[0] = new Object[0][0]; Object[][] val1 = get2();
451 c.v[0] = new Object[0][0]; Object[][] val2 = get2();
453 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
454 }
456 {
457 c.v = new Object[0][0][0]; Object[][] val1 = get3();
458 c.v = new Object[0][0][0]; Object[][] val2 = get3();
460 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
461 }
462 }
463 }
465 /* ==================================================== */
467 static class NestedStableField {
468 static class A {
469 public @Stable Object a;
471 }
472 public @Stable A v;
474 public static final NestedStableField c = new NestedStableField();
475 public static A get() { return c.v; }
476 public static Object get1() { return get().a; }
478 public static void test() throws Exception {
479 {
480 c.v = new A(); c.v.a = Values.A; A val1 = get();
481 c.v.a = Values.B; A val2 = get();
483 assertEquals(val1.a, Values.B);
484 assertEquals(val2.a, Values.B);
485 }
487 {
488 c.v = new A(); c.v.a = Values.A; Object val1 = get1();
489 c.v.a = Values.B; Object val2 = get1();
490 c.v = new A(); c.v.a = Values.C; Object val3 = get1();
492 assertEquals(val1, Values.A);
493 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
494 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
495 }
496 }
497 }
499 /* ==================================================== */
501 static class NestedStableField1 {
502 static class A {
503 public @Stable Object a;
504 public @Stable A next;
505 }
506 public @Stable A v;
508 public static final NestedStableField1 c = new NestedStableField1();
509 public static A get() { return c.v.next.next.next.next.next.next.next; }
510 public static Object get1() { return get().a; }
512 public static void test() throws Exception {
513 {
514 c.v = new A(); c.v.next = new A(); c.v.next.next = c.v;
515 c.v.a = Values.A; c.v.next.a = Values.A; A val1 = get();
516 c.v.a = Values.B; c.v.next.a = Values.B; A val2 = get();
518 assertEquals(val1.a, Values.B);
519 assertEquals(val2.a, Values.B);
520 }
522 {
523 c.v = new A(); c.v.next = c.v;
524 c.v.a = Values.A; Object val1 = get1();
525 c.v.a = Values.B; Object val2 = get1();
526 c.v = new A(); c.v.next = c.v;
527 c.v.a = Values.C; Object val3 = get1();
529 assertEquals(val1, Values.A);
530 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
531 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
532 }
533 }
534 }
535 /* ==================================================== */
537 static class NestedStableField2 {
538 static class A {
539 public @Stable Object a;
540 public @Stable A left;
541 public A right;
542 }
544 public @Stable A v;
546 public static final NestedStableField2 c = new NestedStableField2();
547 public static Object get() { return c.v.left.left.left.a; }
548 public static Object get1() { return c.v.left.left.right.left.a; }
550 public static void test() throws Exception {
551 {
552 c.v = new A(); c.v.left = c.v.right = c.v;
553 c.v.a = Values.A; Object val1 = get(); Object val2 = get1();
554 c.v.a = Values.B; Object val3 = get(); Object val4 = get1();
556 assertEquals(val1, Values.A);
557 assertEquals(val3, (isStableEnabled ? Values.A : Values.B));
559 assertEquals(val2, Values.A);
560 assertEquals(val4, Values.B);
561 }
562 }
563 }
565 /* ==================================================== */
567 static class NestedStableField3 {
568 static class A {
569 public @Stable Object a;
570 public @Stable A[] left;
571 public A[] right;
572 }
574 public @Stable A[] v;
576 public static final NestedStableField3 c = new NestedStableField3();
577 public static Object get() { return c.v[0].left[1].left[0].left[1].a; }
578 public static Object get1() { return c.v[1].left[0].left[1].right[0].left[1].a; }
580 public static void test() throws Exception {
581 {
582 A elem = new A();
583 c.v = new A[] { elem, elem }; c.v[0].left = c.v[0].right = c.v;
584 elem.a = Values.A; Object val1 = get(); Object val2 = get1();
585 elem.a = Values.B; Object val3 = get(); Object val4 = get1();
587 assertEquals(val1, Values.A);
588 assertEquals(val3, (isStableEnabled ? Values.A : Values.B));
590 assertEquals(val2, Values.A);
591 assertEquals(val4, Values.B);
592 }
593 }
594 }
596 /* ==================================================== */
597 // Auxiliary methods
598 static void assertEquals(Object i, Object j) { if (i != j) throw new AssertionError(i + " != " + j); }
599 static void assertTrue(boolean b) { if (!b) throw new AssertionError(); }
601 static boolean failed = false;
603 public static void run(Class<?> test) {
604 Throwable ex = null;
605 System.out.print(test.getName()+": ");
606 try {
607 test.getMethod("test").invoke(null);
608 } catch (InvocationTargetException e) {
609 ex = e.getCause();
610 } catch (Throwable e) {
611 ex = e;
612 } finally {
613 if (ex == null) {
614 System.out.println("PASSED");
615 } else {
616 failed = true;
617 System.out.println("FAILED");
618 ex.printStackTrace(System.out);
619 }
620 }
621 }
623 static final boolean isStableEnabled;
624 static {
625 HotSpotDiagnosticMXBean diagnostic
626 = ManagementFactoryHelper.getDiagnosticMXBean();
627 VMOption tmp;
628 try {
629 tmp = diagnostic.getVMOption("FoldStableValues");
630 } catch (IllegalArgumentException e) {
631 tmp = null;
632 }
633 isStableEnabled = (tmp == null ? false : Boolean.parseBoolean(tmp.getValue()));
634 }
635 }
