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8270307: C2: assert(false) failed: bad AD file after JDK-8267687

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Co-authored-by: Kuai Wei <kuaiwei.kw@alibaba-inc.com>
Reviewed-by: kvn, thartmann
This commit is contained in:
Yi Yang 2021-07-20 06:10:58 +00:00
parent c1304519b5
commit 0cec11d3eb
2 changed files with 62 additions and 0 deletions
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3
src/hotspot/share/opto/movenode.cpp
View File

@ -155,6 +155,9 @@ const Type* CMoveNode::Value(PhaseGVN* phase) const {
if (phase->type(in(Condition)) == Type::TOP) {
return Type::TOP;
}
if (phase->type(in(IfTrue)) == Type::TOP || phase->type(in(IfFalse)) == Type::TOP) {
return Type::TOP;
}
const Type* t = phase->type(in(IfFalse))->meet_speculative(phase->type(in(IfTrue)));
return t->filter(_type);
}

59
test/hotspot/jtreg/compiler/c2/TestCMoveHasTopInput.java Normal file
View File

@ -0,0 +1,59 @@
/*
* Copyright (c) 2021, Alibaba Group Holding Limited. 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 8270307
* @summary C2: assert(false) failed: bad AD file after JDK-8267687
* @library /test/lib
* @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=TestCMoveHasTopInput.vMeth TestCMoveHasTopInput
*/
public class TestCMoveHasTopInput {
public static boolean arr[] = new boolean[20];
public void vMeth(long l) {
for (int a = 2; a < 155; a++) {
for (int b = 1; b < 10; ++b) {
for (int c = 1; c < 2; c++) {
l += 3 * l;
arr[b - 1] = false;
switch (a) {
case 14:
case 17:
l -= b;
break;
}
}
}
}
}
public static void main(String... args) {
TestCMoveHasTopInput test = new TestCMoveHasTopInput();
for (int i = 0; i < 10; i++) {
test.vMeth(i);
}
}
}