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test/hotspot/jtreg/compiler/gcbarriers/TestZGCUnrolling.java

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42 
43     static class Outer {
44         Object f;
45     }
46 
47     static final VarHandle fVarHandle;
48     static {
49         MethodHandles.Lookup l = MethodHandles.lookup();
50         try {
51             fVarHandle = l.findVarHandle(Outer.class, "f", Object.class);
52         } catch (Exception e) {
53             throw new Error(e);
54         }
55     }
56 
57     public static void main(String[] args) {
58         TestFramework.runWithFlags("-XX:+UseZGC", "-XX:LoopUnrollLimit=24");
59     }
60 
61     @Test
62     @IR(counts = {IRNode.STORE_P, "1"})

63     public static void testNoUnrolling(Outer o, Object o1) {
64         for (int i = 0; i < 64; i++) {
65             fVarHandle.setVolatile(o, o1);
66         }
67     }
68 
69     @Run(test = {"testNoUnrolling"})
70     void run() {
71         testNoUnrolling(new Outer(), new Object());
72     }
73 }

42 
43     static class Outer {
44         Object f;
45     }
46 
47     static final VarHandle fVarHandle;
48     static {
49         MethodHandles.Lookup l = MethodHandles.lookup();
50         try {
51             fVarHandle = l.findVarHandle(Outer.class, "f", Object.class);
52         } catch (Exception e) {
53             throw new Error(e);
54         }
55     }
56 
57     public static void main(String[] args) {
58         TestFramework.runWithFlags("-XX:+UseZGC", "-XX:LoopUnrollLimit=24");
59     }
60 
61     @Test
62     // TODO JDK-8331551
63     // @IR(counts = {IRNode.STORE_P, "1"})
64     public static void testNoUnrolling(Outer o, Object o1) {
65         for (int i = 0; i < 64; i++) {
66             fVarHandle.setVolatile(o, o1);
67         }
68     }
69 
70     @Run(test = {"testNoUnrolling"})
71     void run() {
72         testNoUnrolling(new Outer(), new Object());
73     }
74 }
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