Mercurial > hg > graal-compiler
diff test/compiler/types/TestMeetTopArrayExactConstantArray.java @ 17619:5231c2210388
8027571: fatal error: meet not symmetric
Summary: meet of one constant array and one exact array not symmetric.
Reviewed-by: kvn
author | roland |
---|---|
date | Tue, 07 Jan 2014 16:02:10 +0100 |
parents | |
children | 45b0159f30f2 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/types/TestMeetTopArrayExactConstantArray.java Tue Jan 07 16:02:10 2014 +0100 @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2013, 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. + * + * 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 + * @bug 8027571 + * @summary meet of TopPTR exact array with constant array is not symmetric + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseOnStackReplacement -XX:TypeProfileLevel=222 -XX:+UnlockExperimentalVMOptions -XX:+UseTypeSpeculation -XX:-BackgroundCompilation TestMeetTopArrayExactConstantArray + * + */ + +public class TestMeetTopArrayExactConstantArray { + + static class A { + } + + static class B { + } + + static class C extends A { + } + + static class D extends C { + } + + final static B[] b = new B[10]; + + static void m0(Object[] o) { + if (o.getClass() == Object[].class) { + } + } + + static void m1(Object[] o, boolean cond) { + if (cond) { + o = b; + } + m0(o); + } + + static void m2(Object[] o, boolean cond1, boolean cond2) { + if (cond1) { + m1(o, cond2); + } + } + + static void m3(C[] o, boolean cond1, boolean cond2, boolean cond3) { + if (cond1) { + m2(o, cond2, cond3); + } + } + + static public void main(String[] args) { + A[] a = new A[10]; + D[] d = new D[10]; + Object[] o = new Object[10]; + for (int i = 0; i < 5000; i++) { + // record in profiling that the if in m0 succeeds + m0(o); + // record some profiling for m2 and m1 + m2(a, true, (i%2) == 0); + // record some profiling for m3 and conflicting profile for m2 + m3(d, true, false, (i%2) == 0); + } + + // get m3 compiled. The if in m0 will be optimized because of argument profiling in m3 + C[] c = new C[10]; + for (int i = 0; i < 20000; i++) { + m3(c, true, false, (i%2) == 0); + } + // make m3 not entrant and the if in m0 fail + m3(c, true, true, false); + m3(c, true, true, false); + m3(c, true, true, false); + m3(c, true, true, false); + + // make m3 recompile, this time with if the not optimized + // on entry to m3, argument o is of type C[], profiled C[] + // on entry to m1, argument o is of type C[], speculative C[] exact, profiled A[]. Speculative becomes AnyNull + // after the if in m1, speculative type of o becomes constant from final field b + // the true if branch in m0 does a join between the type of o of speculative type constant from final field b and exact klass Object[] + for (int i = 0; i < 20000; i++) { + m3(c, true, false, (i%2) == 0); + } + + System.out.println("TEST PASSED"); + } +}