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8007722: C2: "assert(tp->base() != Type::AnyPtr) failed: not a bare pointer" at machnode.cpp:376

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GetAndSetP's MachNode should capture bottom type.

Reviewed-by: kvn
This commit is contained in:
Roland Westrelin 2013-02-26 12:18:30 +01:00
parent fe92862089
commit c84424d4af
2 changed files with 59 additions and 2 deletions
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5
hotspot/src/share/vm/adlc/formssel.cpp
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@ -753,10 +753,11 @@ bool InstructForm::captures_bottom_type(FormDict &globals) const {
!strcmp(_matrule->_rChild->_opType,"DecodeNKlass") || !strcmp(_matrule->_rChild->_opType,"DecodeNKlass") ||
!strcmp(_matrule->_rChild->_opType,"EncodePKlass") || !strcmp(_matrule->_rChild->_opType,"EncodePKlass") ||
!strcmp(_matrule->_rChild->_opType,"LoadN") || !strcmp(_matrule->_rChild->_opType,"LoadN") ||
!strcmp(_matrule->_rChild->_opType,"GetAndSetN") ||
!strcmp(_matrule->_rChild->_opType,"LoadNKlass") || !strcmp(_matrule->_rChild->_opType,"LoadNKlass") ||
!strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception
!strcmp(_matrule->_rChild->_opType,"CheckCastPP")) ) return true; !strcmp(_matrule->_rChild->_opType,"CheckCastPP") ||
!strcmp(_matrule->_rChild->_opType,"GetAndSetP") ||
!strcmp(_matrule->_rChild->_opType,"GetAndSetN")) ) return true;
else if ( is_ideal_load() == Form::idealP ) return true; else if ( is_ideal_load() == Form::idealP ) return true;
else if ( is_ideal_store() != Form::none ) return true; else if ( is_ideal_store() != Form::none ) return true;

56
hotspot/test/compiler/8007722/Test8007722.java Normal file
View file

@ -0,0 +1,56 @@
/*
* 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 8007722
* @summary GetAndSetP's MachNode should capture bottom type
* @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007722
*
*/
import java.util.concurrent.atomic.*;
public class Test8007722 {
int i;
static AtomicReference<Test8007722> ref;
static int test(Test8007722 new_obj) {
Test8007722 o = ref.getAndSet(new_obj);
int ret = o.i;
o.i = 5;
return ret;
}
static public void main(String[] args) {
Test8007722 obj = new Test8007722();
ref = new AtomicReference<Test8007722>(obj);
for (int i = 0; i < 20000; i++) {
test(obj);
}
System.out.println("PASSED");
}
}