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1456d37a
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体验新版 GitCode,发现更多精彩内容 >>
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1456d37a
编写于
1月 22, 2019
作者:
V
vlivanov
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电子邮件补丁
差异文件
8202952: C2: Unexpected dead nodes after matching
Reviewed-by: kvn
上级
79304cb9
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
61 addition
and
0 deletion
+61
-0
src/hotspot/cpu/x86/x86.ad
src/hotspot/cpu/x86/x86.ad
+1
-0
test/hotspot/jtreg/compiler/c2/TestMatcherLargeOffset.java
test/hotspot/jtreg/compiler/c2/TestMatcherLargeOffset.java
+60
-0
未找到文件。
src/hotspot/cpu/x86/x86.ad
浏览文件 @
1456d37a
...
@@ -1634,6 +1634,7 @@ bool Matcher::clone_address_expressions(AddPNode* m, Matcher::MStack& mstack, Ve
...
@@ -1634,6 +1634,7 @@ bool Matcher::clone_address_expressions(AddPNode* m, Matcher::MStack& mstack, Ve
// Cheap to find it by looking for screwy base.
// Cheap to find it by looking for screwy base.
if (adr->is_AddP() &&
if (adr->is_AddP() &&
!adr->in(AddPNode::Base)->is_top() &&
!adr->in(AddPNode::Base)->is_top() &&
LP64_ONLY( off->get_long() == (int) (off->get_long()) && ) // immL32
// Are there other uses besides address expressions?
// Are there other uses besides address expressions?
!is_visited(adr)) {
!is_visited(adr)) {
address_visited.set(adr->_idx); // Flag as address_visited
address_visited.set(adr->_idx); // Flag as address_visited
...
...
test/hotspot/jtreg/compiler/c2/TestMatcherLargeOffset.java
0 → 100644
浏览文件 @
1456d37a
/*
* Copyright (c) 2019, 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 8202952
* @summary C2: Unexpected dead nodes after matching
*
* @run main/othervm -XX:-TieredCompilation -Xcomp -XX:CompileOnly=::test
* compiler.c2.TestMatcherLargeOffset
*/
package
compiler.c2
;
public
class
TestMatcherLargeOffset
{
public
static
final
int
N
=
400
;
public
static
int
iArrFld
[]
=
new
int
[
N
];
public
static
void
m
(
int
i4
)
{
i4
|=
-
104
;
iArrFld
[(
i4
>>>
1
)
%
N
]
>>=
i4
;
}
public
static
void
test
()
{
int
i2
=
1
,
i24
=
65
;
for
(
int
i1
=
7
;
i1
<
384
;
++
i1
)
{
for
(
long
l
=
2
;
l
<
67
;
l
++)
{
m
(
i2
);
for
(
i24
=
1
;
2
>
i24
;
++
i24
)
{
iArrFld
=
iArrFld
;
}
}
i2
=
(-
229
/
i24
);
}
}
public
static
void
main
(
String
[]
strArr
)
{
for
(
int
i
=
0
;
i
<
5
;
i
++
)
{
test
();
}
}
}
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