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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
提交
ab50c38f
编写于
8月 21, 2019
作者:
D
dpochepk
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电子邮件补丁
差异文件
8215792: AArch64: String.indexOf generates incorrect result
Reviewed-by: dsamersoff
上级
b0ad6efd
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
63 addition
and
0 deletion
+63
-0
src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
+1
-0
test/hotspot/jtreg/compiler/intrinsics/Test8215792.java
test/hotspot/jtreg/compiler/intrinsics/Test8215792.java
+62
-0
未找到文件。
src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
浏览文件 @
ab50c38f
...
...
@@ -4343,6 +4343,7 @@ class StubGenerator: public StubCodeGenerator {
__
ldr
(
ch1
,
Address
(
str1
));
// Read whole register from str2. It is safe, because length >=8 here
__
ldr
(
ch2
,
Address
(
str2
));
__
sub
(
cnt2
,
cnt2
,
cnt1
);
__
andr
(
first
,
ch1
,
str1_isL
?
0xFF
:
0xFFFF
);
if
(
str1_isL
!=
str2_isL
)
{
__
eor
(
v0
,
__
T16B
,
v0
,
v0
);
...
...
test/hotspot/jtreg/compiler/intrinsics/Test8215792.java
0 → 100644
浏览文件 @
ab50c38f
/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, Arm 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 8215792
* @summary Fix a bug in AArch64 string intrinsics
*
* @run main/othervm compiler.intrinsics.Test8215792
* @run main/othervm -XX:-CompactStrings compiler.intrinsics.Test8215792
*/
package
compiler.intrinsics
;
public
class
Test8215792
{
private
static
final
int
ITERATIONS
=
10000
;
private
static
final
String
pattern
=
"01234567890123456789"
;
public
static
void
main
(
String
[]
args
)
{
// Repeat many times to trigger compilation
for
(
int
iter
=
0
;
iter
<
ITERATIONS
;
iter
++)
{
StringBuilder
str1
=
new
StringBuilder
(
"ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789"
);
StringBuilder
str2
=
new
StringBuilder
(
"\u4f60\u598dCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789"
);
for
(
int
i
=
0
;
i
<
20
;
i
++)
{
// Remove one character from the tail
str1
.
setLength
(
str1
.
length
()
-
1
);
str2
.
setLength
(
str2
.
length
()
-
1
);
// Pattern string should not be found after characters removed from the tail
if
(
str1
.
indexOf
(
pattern
)
!=
-
1
||
str2
.
indexOf
(
pattern
)
!=
-
1
)
{
System
.
out
.
println
(
"FAILED"
);
System
.
exit
(
1
);
}
}
}
System
.
out
.
println
(
"PASSED"
);
}
}
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