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bfaec777
编写于
14年前
作者:
N
never
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电子邮件补丁
差异文件
6792161: assert("No dead instructions after post-alloc")
Reviewed-by: kvn
上级
1051bb86
master
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2
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Showing
2 changed file
with
72 addition
and
2 deletion
+72
-2
src/share/vm/opto/ifg.cpp
src/share/vm/opto/ifg.cpp
+23
-2
test/compiler/6792161/Test6792161.java
test/compiler/6792161/Test6792161.java
+49
-0
未找到文件。
src/share/vm/opto/ifg.cpp
浏览文件 @
bfaec777
/*
* Copyright 1998-20
09
Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1998-20
10
Sun Microsystems, Inc. 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
...
...
@@ -736,7 +736,28 @@ uint PhaseChaitin::build_ifg_physical( ResourceArea *a ) {
// the flags and assumes it's dead. This keeps the (useless)
// flag-setting behavior alive while also keeping the (useful)
// memory update effect.
for
(
uint
k
=
((
n
->
Opcode
()
==
Op_SCMemProj
)
?
0
:
1
);
k
<
n
->
req
();
k
++
)
{
uint
begin
=
1
;
uint
end
=
n
->
req
();
if
(
n
->
Opcode
()
==
Op_SCMemProj
)
{
begin
=
0
;
}
else
if
(
n
->
is_Mach
())
{
switch
(
n
->
as_Mach
()
->
ideal_Opcode
())
{
case
Op_MemBarAcquire
:
case
Op_MemBarVolatile
:
if
(
n
->
len
()
>=
MemBarNode
::
Precedent
+
1
&&
n
->
in
(
MemBarNode
::
Precedent
)
!=
NULL
&&
n
->
in
(
MemBarNode
::
Precedent
)
->
outcnt
()
==
1
)
{
// This membar node is the single user of it's input
// so the input won't be considered live and this node
// would get deleted during copy elimination so force
// it to be live.
end
=
MemBarNode
::
Precedent
+
1
;
}
break
;
}
}
for
(
uint
k
=
begin
;
k
<
end
;
k
++
)
{
Node
*
def
=
n
->
in
(
k
);
uint
x
=
n2lidx
(
def
);
if
(
!
x
)
continue
;
...
...
This diff is collapsed.
Click to expand it.
test/compiler/6792161/Test6792161.java
0 → 100644
浏览文件 @
bfaec777
/*
* Copyright 2010 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
/**
* @test
* @bug 6792161
* @summary assert("No dead instructions after post-alloc")
*
* @run main/othervm -Xcomp -XX:MaxInlineSize=120 Test6792161
*/
import
java.lang.reflect.Constructor
;
public
class
Test6792161
{
static
Constructor
test
(
Class
cls
)
throws
Exception
{
Class
[]
args
=
{
String
.
class
};
try
{
return
cls
.
getConstructor
(
args
);
}
catch
(
NoSuchMethodException
e
)
{}
return
cls
.
getConstructor
(
new
Class
[
0
]);
}
public
static
void
main
(
final
String
[]
args
)
throws
Exception
{
try
{
for
(
int
i
=
0
;
i
<
100000
;
i
++)
{
Constructor
ctor
=
test
(
Class
.
forName
(
"Test6792161"
));
}
}
catch
(
NoSuchMethodException
e
)
{}
}
}
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