86 lines
2.7 KiB
Java
86 lines
2.7 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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* @test
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* @bug 8316105
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* @library /test/lib
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* @summary Test that back to back Parse Predicates with same deopt reason are not grouped together
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* @run main/othervm -Xbatch compiler.predicates.TestBackToBackParsePredicates
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*/
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package compiler.predicates;
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import jdk.test.lib.Asserts;
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public class TestBackToBackParsePredicates {
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static long lFld;
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public static void main(String[] strArr2) {
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for (int i = -350; i <= 0; i++) {
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lFld = 30;
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test(i);
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check();
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}
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lFld = 30;
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test(1);
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check();
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}
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// Inlined
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static void foo() {
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for (int i12 = 1; i12 < 5; i12++) { // Loop A
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lFld += 1; // StoreL
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}
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}
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static void test(int x) {
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foo();
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// After fully unrolling loop A and after next round of IGVN:
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// We wrongly treat two back to back Loop Limit Check Parse Predicates as single Predicate Block. We therefore
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// keep the Loop Parse Predicate of loop A:
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//
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// Loop Parse Predicate (of A)
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// Loop Limit Check Parse Predicate (of A) |
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// -> StoreL of lFld pinned here | Wrongly treated as single Predicate Block
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// Loop Limit Check Parse Predicate (of B) |
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for (int i = 7; i < 212; i++) { // Loop B
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for (int j = 1; j < 80; j++) {
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switch (x % 8) {
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case 0:
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case 2:
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break;
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case 6:
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case 7:
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}
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}
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}
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}
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static void check() {
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Asserts.assertEQ(34L, lFld);
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}
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}
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