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Bug 1208369 - java-1.8.0-openjdk: Memory leak
Summary: java-1.8.0-openjdk: Memory leak
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: java-1.8.0-openjdk
Version: rawhide
Hardware: x86_64
OS: Unspecified
unspecified
urgent
Target Milestone: ---
Assignee: Severin Gehwolf
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: 1208319
TreeView+ depends on / blocked
 
Reported: 2015-04-02 06:14 UTC by Mikolaj Izdebski
Modified: 2015-05-03 17:23 UTC (History)
8 users (show)

Fixed In Version: java-1.8.0-openjdk-1.8.0.45-36.b13.fc22
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-05-03 17:23:15 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
hs_err log (deleted)
2015-04-02 09:41 UTC, gil cattaneo
no flags Details
gdb commands file in order to get to the error condition (deleted)
2015-04-14 15:20 UTC, Severin Gehwolf
no flags Details
Proposed patch for working around type.o miscompilation. (deleted)
2015-04-17 15:06 UTC, Severin Gehwolf
no flags Details | Diff
Proposed patch fixing signed integer overflow in type.cpp (deleted)
2015-04-27 12:03 UTC, Severin Gehwolf
no flags Details | Diff


Links
System ID Private Priority Status Summary Last Updated
openjdk bug system JDK-8078666 0 None None None Never

Description Mikolaj Izdebski 2015-04-02 06:14:47 UTC
Description of problem:
Latest OpenJDK in rawhide has OOM problem when building maven-scm.

Version-Release number of selected component (if applicable):
java-1.8.0-openjdk-devel-1.8.0.40-26.b25.fc23.x86_64
not reproducible with java-1.8.0-openjdk-devel-1.8.0.40-19.b12.fc22.x86_64

Steps to Reproduce:
1. install java-1.8.0-openjdk-devel-1.8.0.40-26.b25.fc23.x86_64 in rawhide
2. wget http://archive.apache.org/dist/maven/maven-3/3.3.1/binaries/apache-maven-3.3.1-bin.tar.gz
3. tar xf apache-maven-3.3.1-bin.tar.gz
4. wget http://repo1.maven.org/maven2/org/apache/maven/scm/maven-scm/1.9.4/maven-scm-1.9.4-source-release.zip
5. unzip maven-scm-1.9.4-source-release.zip
6. cd ./maven-scm-1.9.4/
7. ulimit -Sv 20000000
8. \time -pv ../apache-maven-3.3.1/bin/mvn -V verify

Actual results:
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 32744 bytes for ChunkPool::allocate

Expected results:
Build succeeds.

Comment 1 Mikolaj Izdebski 2015-04-02 06:24:22 UTC
This is urgent - it breaks large number of Fedora Java builds [1] and makes Java applications unusable.

[1] http://koschei.cloud.fedoraproject.org/groups/java?order_by=state%2Cname

Comment 2 Severin Gehwolf 2015-04-02 08:10:50 UTC
These two builds are the first OpenJDK builds compiled with GCC 5: java-1.8.0-openjdk-devel-1.8.0.40-26.b25.fc2{2,3}.x86_64

Comment 3 Severin Gehwolf 2015-04-02 08:22:56 UTC
(In reply to Severin Gehwolf from comment #2)
> These two builds are the first OpenJDK builds compiled with GCC 5:
> java-1.8.0-openjdk-devel-1.8.0.40-26.b25.fc2{2,3}.x86_64

Both landed yesterday, since java-1.8.0-openjdk was FTBFS due to bug 1206656 until yesterday.

Comment 4 Severin Gehwolf 2015-04-02 08:59:37 UTC
According to [1] F22 has old ABI. F23 breaks this.

[1] http://fedoramagazine.org/gcc-5-in-fedora-whats-an-abi-and-what-happens-when-we-change-it/

Comment 5 gil cattaneo 2015-04-02 09:41:15 UTC
Created attachment 1010090 [details]
hs_err log

Comment 6 jiri vanek 2015-04-02 09:55:39 UTC
Few more observations. After yesterday build - 26.f22/f23 after long pause  because of (arm32 bug 1206656)  they do not build itself and are causing this OOM

Note
packages -26.fc22 fails on both f21 and f23 (no rebuild, just install)
Also 25.fc21 works ok on on f21 but  on f23 it fails.

Comment 7 Severin Gehwolf 2015-04-02 10:24:44 UTC
Failed tasks of java-1.8.0-openjdk trying to build itself with a java-1.8.0-openjdk boot JDK compiled with GCC 5:

F22:     https://koji.fedoraproject.org/koji/taskinfo?taskID=9398527
rawhide: https://koji.fedoraproject.org/koji/taskinfo?taskID=9398358

Comment 8 Severin Gehwolf 2015-04-02 11:05:27 UTC
This seems to be a problem of java-1.8.0-openjdk built with GCC 5. I've reproduced this issue on F22 too. Offending builds have been untagged.

$ koji latest-build f23-build java-1.8.0-openjdk
Build                                     Tag                   Built by
----------------------------------------  --------------------  ----------------
java-1.8.0-openjdk-1.8.0.40-19.b12.fc22   f23                   sharkcz
$ koji latest-build f22-build java-1.8.0-openjdk
Build                                     Tag                   Built by
----------------------------------------  --------------------  ----------------
java-1.8.0-openjdk-1.8.0.40-19.b12.fc22   f22                   sharkcz

java-1.8.0-openjdk-1.8.0.40-19.b12.fc22 was the last one built with GCC 4.9.

Comment 9 Severin Gehwolf 2015-04-02 14:46:57 UTC
A smaller reproducer seems this (TestCrypoLevel.java comes from java-1.8.0-openjdk sources):

$ /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.40-26.b25.fc22.x86_64/bin/javac -d . TestCryptoLevel.java

Comment 10 Severin Gehwolf 2015-04-02 14:51:14 UTC
On my F22 VM which has 2GB of memory allocated I then see this:

$ \time -pv javac -d . TestCryptoLevel.java
	Command being timed: "javac -d . TestCryptoLevel.java"
	User time (seconds): 4.35
	System time (seconds): 3.67
	Percent of CPU this job got: 70%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:11.38
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 1874600
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 23780
	Minor (reclaiming a frame) page faults: 763237
	Voluntary context switches: 27466
	Involuntary context switches: 2841
	Swaps: 0
	File system inputs: 1212272
	File system outputs: 8
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

That javac is /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.40-26.b25.fc22.x86_64/bin/javac.

Note the astonishing number of 23780 major page faults and a max resident size of 1874600 KB, or about 1.8 GB of memory.

Comment 11 Severin Gehwolf 2015-04-02 14:55:57 UTC
Contrast this to the same run on F21 with javac from java-1.8.0-openjdk-devel-1.8.0.40-21.b25.fc21.x86_64

$ \time -pv javac -d . TestCryptoLevel.java
	Command being timed: "javac -d . TestCryptoLevel.java"
	User time (seconds): 0.92
	System time (seconds): 0.04
	Percent of CPU this job got: 229%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.42
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 62792
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 0
	Minor (reclaiming a frame) page faults: 18192
	Voluntary context switches: 1777
	Involuntary context switches: 28
	Swaps: 0
	File system inputs: 0
	File system outputs: 8
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

Comment 12 Mikolaj Izdebski 2015-04-02 14:58:44 UTC
(In reply to Severin Gehwolf from comment #10)
> Note the astonishing number of 23780 major page faults and a max resident
> size of 1874600 KB, or about 1.8 GB of memory.

On my system after running for 40 s it reached max RSS of 14 GiB, virtual memory allocation of 25 GiB:
 PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
8406 kojan     20   0 24.812g 0.014t   6256 S   1.4 90.0   0:41.37 java

These are typical symptoms of large memory leak.

Comment 13 Severin Gehwolf 2015-04-02 15:20:11 UTC
Running the same reproducer again on F22 with a GCC 4.9 produced build I get this.

$ rpm -q java-1.8.0-openjdk-devel
java-1.8.0-openjdk-devel-1.8.0.40-19.b12.fc22.x86_64

$ \time -pv javac -d . TestCryptoLevel.java
	Command being timed: "javac -d . TestCryptoLevel.java"
	User time (seconds): 0.69
	System time (seconds): 0.04
	Percent of CPU this job got: 158%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.46
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 58400
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 0
	Minor (reclaiming a frame) page faults: 15293
	Voluntary context switches: 820
	Involuntary context switches: 513
	Swaps: 0
	File system inputs: 1728
	File system outputs: 8
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

Comment 14 Severin Gehwolf 2015-04-02 15:21:08 UTC
(In reply to Mikolaj Izdebski from comment #12)
> (In reply to Severin Gehwolf from comment #10)
> > Note the astonishing number of 23780 major page faults and a max resident
> > size of 1874600 KB, or about 1.8 GB of memory.
> 
> On my system after running for 40 s it reached max RSS of 14 GiB, virtual
> memory allocation of 25 GiB:
>  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
> 8406 kojan     20   0 24.812g 0.014t   6256 S   1.4 90.0   0:41.37 java

This is running "javac -d . TestCryptoLevel.java" I take it?

Comment 15 Mikolaj Izdebski 2015-04-02 16:29:27 UTC
(In reply to Severin Gehwolf from comment #14)
> (In reply to Mikolaj Izdebski from comment #12)
> > (In reply to Severin Gehwolf from comment #10)
> > > Note the astonishing number of 23780 major page faults and a max resident
> > > size of 1874600 KB, or about 1.8 GB of memory.
> > 
> > On my system after running for 40 s it reached max RSS of 14 GiB, virtual
> > memory allocation of 25 GiB:
> >  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
> > 8406 kojan     20   0 24.812g 0.014t   6256 S   1.4 90.0   0:41.37 java
> 
> This is running "javac -d . TestCryptoLevel.java" I take it?

No, this was with my reproducer. Your reproducer doesn't cause OOM on my system as apparently I have more RAM. When trying to compile TestCryptoLevel.java javac succeeds on my rawhide system, but allocates over 25 GiB virtual memory (RSS 15 GiB):

$ ulimit -Sv 30000000

$ \time -pv schedtool -B -e nice javac -d . TestCryptoLevel.java
	Command being timed: "schedtool -B -e nice javac -d . TestCryptoLevel.java"
	User time (seconds): 27.33
	System time (seconds): 4.03
	Percent of CPU this job got: 230%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:13.59
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 14973324
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 26
	Minor (reclaiming a frame) page faults: 3758815
	Voluntary context switches: 98037
	Involuntary context switches: 1683
	Swaps: 0
	File system inputs: 5280
	File system outputs: 72
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

$ ls -go TestCryptoLevel*
-rw-rw-r--. 1 2013 Apr  2 18:20 TestCryptoLevel.class
-rw-rw-r--. 1 2477 Apr  2 18:18 TestCryptoLevel.java

$ rpm -qa|grep openjdk
java-1.8.0-openjdk-headless-1.8.0.40-26.b25.fc23.x86_64
java-1.8.0-openjdk-devel-1.8.0.40-26.b25.fc23.x86_64
java-1.8.0-openjdk-1.8.0.40-26.b25.fc23.x86_64

$ cat /etc/system-release
Fedora release 23 (Rawhide)

Comment 16 Severin Gehwolf 2015-04-02 16:58:28 UTC
Numbers for a local slowdebug rebuild look better: about 103MB vs 1.8GB of a release build. Also a lot less major page faults.

$ \time -pv javac -d . TestCryptoLevel.java 
	Command being timed: "javac -d . TestCryptoLevel.java"
	User time (seconds): 5.02
	System time (seconds): 0.05
	Percent of CPU this job got: 179%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.82
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 103880
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 0
	Minor (reclaiming a frame) page faults: 31590
	Voluntary context switches: 502
	Involuntary context switches: 560
	Swaps: 0
	File system inputs: 0
	File system outputs: 8
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

$ java -version
openjdk version "1.8.0_40-debug"
OpenJDK Runtime Environment (build 1.8.0_40-debug-b25)
OpenJDK 64-Bit Server VM (build 25.40-b25-debug, mixed mode)

Comment 17 Omair Majid 2015-04-02 18:46:56 UTC
I built the fastdebug variant and javac is reproducibly crashing:

$ /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/java -version
openjdk version "1.8.0_40-fastdebug"
OpenJDK Runtime Environment (build 1.8.0_40-fastdebug-b25)
OpenJDK 64-Bit Server VM (build 25.40-b25-fastdebug, mixed mode)
$ /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -d . /home/omajid/java-1.8.0-openjdk/TestCryptoLevel.java
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc:  SuppressErrorAt=/phaseX.cpp:1486
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (/home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/opto/phaseX.cpp:1486), pid=23668, tid=140306751637248
#  assert(t0->isa_int()->_widen <= t->isa_int()->_widen) failed: widen increases
#
# JRE version: OpenJDK Runtime Environment (8.0_40-b25) (build 1.8.0_40-fastdebug-b25)
# Java VM: OpenJDK 64-Bit Server VM (25.40-b25-fastdebug mixed mode linux-amd64 compressed oops)
# Core dump written. Default location: /home/omajid/java-1.8.0-openjdk/core or core.23668 (max size 100000000 kB). To ensure a full core dump, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/omajid/java-1.8.0-openjdk/hs_err_pid23668.log
#
# Compiler replay data is saved as:
# /home/omajid/java-1.8.0-openjdk/replay_pid23668.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#
Current thread is 140306751637248
Dumping core ...
Aborted (core dumped)

Comment 18 Omair Majid 2015-04-02 18:49:07 UTC
Also, -Xint works, but -Xcomp fails:

$ /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -J-Xint -d . /home/omajid/java-1.8.0-openjdk/TestCryptoLevel.java

$ /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -J-Xcomp -d . /home/omajid/java-1.8.0-openjdk/TestCryptoLevel.java
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 1342177312 bytes for Chunk::new
# An error report file with more information is saved as:
# /home/omajid/java-1.8.0-openjdk/hs_err_pid23842.log
#
# Compiler replay data is saved as:
# /home/omajid/java-1.8.0-openjdk/replay_pid23842.log

Comment 19 Severin Gehwolf 2015-04-14 08:45:54 UTC
(In reply to Omair Majid from comment #18)
> Also, -Xint works, but -Xcomp fails:
> 
> $
> /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.
> x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -J-Xint -d .
> /home/omajid/java-1.8.0-openjdk/TestCryptoLevel.java
> 
> $
> /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.
> x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -J-Xcomp -d .
> /home/omajid/java-1.8.0-openjdk/TestCryptoLevel.java
> #
> # There is insufficient memory for the Java Runtime Environment to continue.
> # Native memory allocation (malloc) failed to allocate 1342177312 bytes for
> Chunk::new
> # An error report file with more information is saved as:
> # /home/omajid/java-1.8.0-openjdk/hs_err_pid23842.log
> #
> # Compiler replay data is saved as:
> # /home/omajid/java-1.8.0-openjdk/replay_pid23842.log

Reproduced, thanks. So this is starting to look like a JIT bug caused by GCC 5. FWIW, the plain java command line is:

----------------------------

JDK=/path/to/j2sdk-image
$JDK/bin/java \
 -classpath $JDK/lib/tools.jar:$JDK/classes \
 -Dapplication.home=$JDK \
 -Xms8m \
 com.sun.tools.javac.Main -d . TestCryptoLevel.java

----------------------------

Comment 20 Severin Gehwolf 2015-04-14 15:12:42 UTC
Something is going wrong when java.lang.String::hashCode is getting compiled with C2. Reproducer on a F22 fastdebug build is:

JDK=/path/to/j2sdk-image
$JDK/bin/java \
 -classpath $JDK/lib/tools.jar:$JDK/classes \
 -Dapplication.home=$JDK \
 -Xms8m \
 -XX:+PrintCompilation \
 -XX:-TieredCompilation \
 -XX:CICompilerCount=1 \
 com.sun.tools.javac.Main -d . TestCryptoLevel.java

Comment 21 Severin Gehwolf 2015-04-14 15:15:46 UTC
With -XX:+TracePhaseCCP turned on as well and using the reproducer in comment 20 I get this output until the assertion triggers:

     83    1             java.lang.String::hashCode (55 bytes)
bottom		 0	Root	===  0  52  103  116  189  [[ 0  1  3  22  23  35  39  47  91  98  111  139  127  190  213  309  311  313  316 ]] 
{0:control, 1:abIO, 2:memory, 3:rawptr:BotPTR, 4:return_address, 5:java/lang/String:NotNull:exact *}	 3	Start	===  3  0  [[ 3  5  6  7  8  9  10 ]]  #{0:control, 1:abIO, 2:memory, 3:rawptr:BotPTR, 4:return_address, 5:java/lang/String:NotNull:exact *}
long:16		 22	ConL	===  0  [[ 24  287  224  251 ]]  #long:16
int:0		 23	ConI	===  0  [[ 26  56  258  63  261  112  99  112  99  264  215 ]]  #int:0
long:12		 35	ConL	===  0  [[ 36  54 ]]  #long:12
NULL		 39	ConP	===  0  [[ 40  48 ]]  #NULL
int:-10		 47	ConI	===  0  [[ 48 ]]  #int:-10
int:1		 91	ConI	===  0  [[ 92  105  312  291  228  229  255  256  281  292 ]]  #int:1
int:-122	 98	ConI	===  0  [[ 99 ]]  #int:-122
int:-130	 111	ConI	===  0  [[ 112 ]]  #int:-130
int:-28		 139	ConI	===  0  [[]]  #int:-28
int:5		 127	ConI	===  0  [[ 194  221  248  284 ]]  #int:5
int:0		 190	ConI	===  0  [[]]  #int:0
int:-1		 213	ConI	===  0  [[ 214  306 ]]  #int:-1
long:1		 309	ConL	===  0  [[]]  #long:1
int:2		 311	ConI	===  0  [[ 196 ]]  #int:2
long:2		 313	ConL	===  0  [[]]  #long:2
control		 5	Parm	===  3  [[ 28 ]] Control !jvms: String::hashCode @ bci:-1
abIO		 6	Parm	===  3  [[ 112  48  189  99 ]] I_O !orig=[87] !jvms: String::hashCode @ bci:-1
memory		 7	Parm	===  3  [[ 187  187  99  16  25  150  37  112  48  55  184  223  250  286 ]] Memory  Memory: @BotPTR *+bot, idx=Bot; !orig=[88],[120] !jvms: String::hashCode @ bci:-1
rawptr:BotPTR	 8	Parm	===  3  [[ 189  103  99  112  116  52  48 ]] FramePtr !jvms: String::hashCode @ bci:-1
return_address	 9	Parm	===  3  [[ 189  48  99  112 ]] ReturnAdr !jvms: String::hashCode @ bci:-1
long:18		 316	ConL	===  0  [[ 148 ]]  #long:18
java/lang/String:NotNull:exact *	 10	Parm	===  3  [[ 36  36  112  24  24  99 ]] Parm0: java/lang/String:NotNull:exact *  Oop:java/lang/String:NotNull:exact * !jvms: String::hashCode @ bci:-1
int		 281	Opaque1	=== _  91  55  [[ 253 ]] 
{0:top, 1:top}	 28	If	===  5  27  [[ 29  30 ]] P=0.336000, C=250.000000 !jvms: String::hashCode @ bci:6
int		 92	Opaque1	=== _  91  [[ 93 ]]  !jvms: String::hashCode @ bci:33
java/lang/String:NotNull:exact+16 *	 24	AddP	=== _  10  10  22  [[ 25  184 ]]   Oop:java/lang/String:NotNull:exact+16 * !jvms: String::hashCode @ bci:1
java/lang/String:NotNull:exact+12 * [narrow]	 36	AddP	=== _  10  10  35  [[ 37 ]]   Oop:java/lang/String:NotNull:exact+12 * [narrow] !jvms: String::hashCode @ bci:10
int		 105	Opaque1	=== _  91  [[ 106 ]]  !jvms: String::hashCode @ bci:33
bool		 93	Conv2B	=== _  92  [[ 94 ]]  !jvms: String::hashCode @ bci:33
narrowoop: char[int:>=0]:exact *	 37	LoadN	=== _  7  36  [[ 38 ]]  @java/lang/String:exact+12 * [narrow], name=value, idx=5; #narrowoop: char[int:>=0]:exact * !orig=[156] !jvms: String::hashCode @ bci:10
int		 25	LoadI	=== _  7  24  [[ 63  26 ]]  @java/lang/String:exact+16 *, name=hash, idx=4; #int !jvms: String::hashCode @ bci:1
int:-1..1	 26	CmpI	=== _  25  23  [[ 27 ]]  !jvms: String::hashCode @ bci:6
char[int:>=0]:exact *	 38	DecodeN	=== _  37  [[ 53  40 ]]  #char[int:>=0]:exact * !orig=[157] !jvms: String::hashCode @ bci:10
bool		 27	Bool	=== _  26  [[ 28 ]] [ne] !jvms: String::hashCode @ bci:6
memory		 16	MergeMem	=== _  1  7  1  187  [[ 189 ]]  { - N187:java/lang/String:exact+16 * }  Memory: @BotPTR *+bot, idx=Bot;
int:-1..1	 40	CmpP	=== _  38  39  [[ 41 ]]  !orig=[158] !jvms: String::hashCode @ bci:13
{0:control, 1:control}	 28	If	===  5  27  [[ 29  30 ]] P=0.336000, C=250.000000 !jvms: String::hashCode @ bci:6
control		 29	IfTrue	===  28  [[ 33 ]] #1 !jvms: String::hashCode @ bci:6
control		 33	Region	===  33  239  59  29  [[ 33  189  63  187 ]]  !jvms: String::hashCode @ bci:53
bottom		 189	Return	===  33  6  16  8  9 returns 63  [[ 0 ]] 
bool		 106	Conv2B	=== _  105  [[ 107 ]]  !jvms: String::hashCode @ bci:33
bool		 41	Bool	=== _  40  [[ 44 ]] [ne] !orig=[159] !jvms: String::hashCode @ bci:13
control		 30	IfFalse	===  28  [[ 44 ]] #0 !jvms: String::hashCode @ bci:6
memory		 187	Phi	===  33  184  7  7  [[ 16 ]]  #memory  Memory: @java/lang/String:exact+16 *, name=hash, idx=4; !orig=[186] !jvms: String::hashCode @ bci:53
int		 63	Phi	===  33  240  23  25  [[ 189 ]]  #int !jvms: String::hashCode @ bci:14
{0:control, 1:control}	 44	If	===  30  41  [[ 45  46 ]] P=0.999999, C=-1.000000 !jvms: String::hashCode @ bci:13
control		 45	IfTrue	===  44  [[ 58  53 ]] #1 !jvms: String::hashCode @ bci:13
{0:top, 1:top}	 58	If	===  45  57  [[ 59  60 ]] P=0.289157, C=166.000000 !jvms: String::hashCode @ bci:14
control		 46	IfFalse	===  44  [[ 48 ]] #0 !jvms: String::hashCode @ bci:13
char[int:>=0]:NotNull:exact *	 53	CastPP	===  45  38  [[ 54  54  315  315  148  112  99  224  227  227  251  254  254  287  290  290 ]]  #char[int:>=0]:NotNull:exact * !orig=[170] !jvms: String::hashCode @ bci:13
char[int:>=0]:NotNull:exact+12 *	 54	AddP	=== _  53  53  35  [[ 55 ]]  !orig=[171] !jvms: String::hashCode @ bci:13
{0:control, 1:abIO, 2:memory, 3:rawptr:BotPTR, 4:return_address}	 48	CallStaticJava	===  46  6  7  8  9 ( 47  1  1  1  1  39 ) [[ 49 ]] # Static uncommon_trap(reason='null_check' action='maybe_recompile')  void ( int ) C=0.000100 String::hashCode @ bci:13 !jvms: String::hashCode @ bci:13
int:>=0		 55	LoadRange	=== _  7  54  [[ 56  211  282  215  214  226  244  281 ]]  @bottom[int:>=0]+12 * [narrow], idx=6; #int:>=0 !orig=[172] !jvms: String::hashCode @ bci:13
bool		 56	CmpI	=== _  55  23  [[ 57 ]]  !jvms: String::hashCode @ bci:14
int		 282	Opaque2	=== _  55  [[ 306 ]] 
bool		 215	CmpU	=== _  55  23  [[ 217 ]]  !orig=[208]
int:-1..max-1	 214	AddI	=== _  55  213  [[ 211 ]]  !orig=[210]
int:-1..1	 211	CmpU	=== _  214  55  [[ 212 ]] 
control		 49	Proj	===  48  [[ 52 ]] #0 !jvms: String::hashCode @ bci:13
bool		 212	Bool	=== _  211  [[ 205 ]] [lt]
bool		 217	Bool	=== _  215  [[ 218 ]] [le]
int		 306	AddI	=== _  282  213  [[ 273  197 ]]  !orig=[283]
bottom		 52	Halt	===  49  1  1  8  1  [[ 0 ]]  !jvms: String::hashCode @ bci:13
bool		 57	Bool	=== _  56  [[ 58 ]] [le] !jvms: String::hashCode @ bci:14
int		 273	Opaque1	=== _  306  [[ 274 ]] 
{0:control, 1:control}	 58	If	===  45  57  [[ 59  60 ]] P=0.289157, C=166.000000 !jvms: String::hashCode @ bci:14
control		 59	IfTrue	===  58  [[ 33 ]] #1 !jvms: String::hashCode @ bci:14
control		 60	IfFalse	===  58  [[ 218 ]] #0 !jvms: String::hashCode @ bci:14
{0:control, 1:control}	 218	If	===  60  217  [[ 219  220 ]] P=0.000001, C=-1.000000 !orig=[202],94 !jvms: String::hashCode @ bci:33
control		 219	IfFalse	===  218  [[ 205 ]] #0 !orig=[203]
{0:control, 1:control}	 205	If	===  219  212  [[ 206  207 ]] P=0.999999, C=-1.000000 !orig=94 !jvms: String::hashCode @ bci:33
control		 207	IfFalse	===  205  [[ 201 ]] #0
control		 220	IfTrue	===  218  [[ 201 ]] #1 !orig=[204]
control		 206	IfTrue	===  205  [[ 94  150  223  250  286 ]] #1
{0:control, 1:control}	 94	If	===  206  93  [[ 95  104 ]] P=0.999999, C=-1.000000 !jvms: String::hashCode @ bci:33
control		 201	Region	===  201  95  220  207  [[ 201  99 ]] 
{0:control, 1:abIO, 2:memory, 3:rawptr:BotPTR, 4:return_address}	 99	CallStaticJava	===  201  6  7  8  9 ( 98  10  23  53  23 ) [[ 100 ]] # Static uncommon_trap(reason='predicate' action='maybe_recompile')  void ( int ) C=0.000100 String::hashCode @ bci:33 !jvms: String::hashCode @ bci:33
control		 104	IfTrue	===  94  [[ 107 ]] #1 !jvms: String::hashCode @ bci:33
control		 95	IfFalse	===  94  [[ 201 ]] #0 !jvms: String::hashCode @ bci:33
{0:control, 1:control}	 107	If	===  104  106  [[ 108  117 ]] P=0.999999, C=-1.000000 !jvms: String::hashCode @ bci:33
control		 108	IfFalse	===  107  [[ 112 ]] #0 !jvms: String::hashCode @ bci:33
control		 100	Proj	===  99  [[ 103 ]] #0 !jvms: String::hashCode @ bci:33
control		 117	IfTrue	===  107  [[ 259 ]] #1 !jvms: String::hashCode @ bci:33
control		 259	CountedLoop	===  259  117  263  [[ 258  259  261  262  264 ]] inner stride: 1 pre of N200 !orig=[200],[191],[118] !jvms: String::hashCode @ bci:33
int:0		 261	Phi	===  259  23  249  [[ 260 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
{0:control, 1:abIO, 2:memory, 3:rawptr:BotPTR, 4:return_address}	 112	CallStaticJava	===  108  6  7  8  9 ( 111  10  23  53  23 ) [[ 113 ]] # Static uncommon_trap(reason='loop_limit_check' action='maybe_recompile')  void ( int ) C=0.000100 String::hashCode @ bci:33 !jvms: String::hashCode @ bci:33
bottom		 103	Halt	===  100  1  1  8  1  [[ 0 ]]  !jvms: String::hashCode @ bci:33
int:0		 264	Phi	===  259  23  248  [[ 260 ]]  #int !orig=192,[128] !jvms: String::hashCode @ bci:36
int:0		 260	SubI	=== _  264  261  [[ 249 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:0		 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
control		 113	Proj	===  112  [[ 116 ]] #0 !jvms: String::hashCode @ bci:33
{0:top, 1:top}	 262	CountedLoopEnd	===  259  252  [[ 263  272 ]] [lt] P=0.500000, C=8524.000000 !orig=199,[175] !jvms: String::hashCode @ bci:30
int:1		 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
int:-1..1	 253	CmpI	=== _  256  281  [[ 252 ]]  !orig=197,[173] !jvms: String::hashCode @ bci:30
long:0		 257	ConvI2L	=== _  258  [[ 255 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
bottom		 116	Halt	===  113  1  1  8  1  [[ 0 ]]  !jvms: String::hashCode @ bci:33
bool		 252	Bool	=== _  253  [[ 262 ]] [lt] !orig=198,[174] !jvms: String::hashCode @ bci:30
int:-1..1	 274	CmpI	=== _  256  273  [[ 275 ]] 
long:0		 255	LShiftL	=== _  257  91  [[ 254 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
char[int:>=0]:NotNull:exact *	 254	AddP	=== _  53  53  255  [[ 251 ]]  !orig=[149] !jvms: String::hashCode @ bci:39
{0:control, 1:control}	 262	CountedLoopEnd	===  259  252  [[ 263  272 ]] [lt] P=0.500000, C=8524.000000 !orig=199,[175] !jvms: String::hashCode @ bci:30
control		 263	IfTrue	===  262  [[ 259 ]] #1 !orig=176 !jvms: String::hashCode @ bci:30
bool		 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
int:1..2	 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
char[int:>=0]:NotNull:exact[0] *	 251	AddP	=== _  53  254  22  [[ 250 ]]  !orig=148 !jvms: String::hashCode @ bci:39
bool		 275	Bool	=== _  274  [[ 276 ]] [lt]
control		 272	IfFalse	===  262  [[ 276 ]] #0
long:0..1	 257	ConvI2L	=== _  258  [[ 255 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
char		 250	LoadUS	===  206  7  251  [[ 249 ]]  @char[int:>=0]:exact+any *, idx=7; #char !orig=150 !jvms: String::hashCode @ bci:39
{0:control, 1:control}	 276	If	===  272  275  [[ 265  277 ]] P=0.999999, C=-1.000000
control		 265	IfFalse	===  276  [[ 266 ]] #0 !orig=242
control		 266	Region	===  266  265  242  [[ 266  246  267  268  270 ]] 
{0:top, 1:top}	 246	If	===  266  245  [[ 177  247 ]] P=0.500000, C=-1.000000
long:0..2	 255	LShiftL	=== _  257  91  [[ 254 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
int:0..2	 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
char		 249	AddI	=== _  260  250  [[ 248  261  268  297 ]]  !orig=151,[182] !jvms: String::hashCode @ bci:40
control		 277	IfTrue	===  276  [[ 295  279 ]] #1
int:1..2	 270	Phi	===  266  256  196  [[ 278  243 ]]  #int
char		 268	Phi	===  266  249  151  [[ 234  240 ]]  #int
int:1..3	 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
int:0..2097120	 248	LShiftI	=== _  249  127  [[ 264  267  300 ]]  !orig=194,[128] !jvms: String::hashCode @ bci:36
char		 261	Phi	===  259  23  249  [[ 260 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
control		 295	CountedLoop	===  295  277  176  [[ 294  295  297  199  300 ]] inner stride: 2 main of N295 !orig=[200],[191],[118] !jvms: String::hashCode @ bci:33
{0:top, 1:top}	 199	CountedLoopEnd	===  295  198  [[ 242  176 ]] [lt] P=0.986232, C=8524.000000 !orig=[175] !jvms: String::hashCode @ bci:30
int:0..2097120	 300	Phi	===  295  248  194  [[ 296 ]]  #int !orig=192,[128] !jvms: String::hashCode @ bci:36
int:0..3	 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
char[int:>=0]:NotNull:exact+any *	 254	AddP	=== _  53  53  255  [[ 251 ]]  !orig=[149] !jvms: String::hashCode @ bci:39
long:0..3	 257	ConvI2L	=== _  258  [[ 255 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
char		 297	Phi	===  295  249  151  [[ 296 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
int:1..3	 279	CastII	===  277  256  [[ 294 ]]  #int:<=max-1 carry dependency
int		 243	Opaque1	=== _  270  [[ 244 ]] 
int:1..3	 270	Phi	===  266  256  196  [[ 278  243 ]]  #int
int:0..2097120	 267	Phi	===  266  248  194  [[ 237 ]]  #int
int:-65535..0	 260	SubI	=== _  264  261  [[ 249 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:0..2097120	 264	Phi	===  259  23  248  [[ 260 ]]  #int !orig=192,[128] !jvms: String::hashCode @ bci:36
int:-65535..2097120	 260	SubI	=== _  264  261  [[ 249 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:1..4	 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
char[int:>=0]:NotNull:exact+any *	 251	AddP	=== _  53  254  22  [[ 250 ]]  !orig=148 !jvms: String::hashCode @ bci:39
long:0..6	 255	LShiftL	=== _  257  91  [[ 254 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
int:-65535..2097120	 296	SubI	=== _  300  297  [[ 285 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:-1..1	 244	CmpI	=== _  243  55  [[ 245 ]] 
int:1..3	 294	Phi	===  295  279  196  [[ 292  293  307  196 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
int:2..4	 292	AddI	=== _  294  91  [[]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
long:1..3	 293	ConvI2L	=== _  294  [[ 291 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
long:2..6	 291	LShiftL	=== _  293  91  [[ 290 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
int:-65535..2162655	 249	AddI	=== _  260  250  [[ 248  261  268  297 ]]  !orig=151,[182] !jvms: String::hashCode @ bci:40
int:1..4	 279	CastII	===  277  256  [[ 294 ]]  #int:<=max-1 carry dependency
int:1..4	 270	Phi	===  266  256  196  [[ 278  243 ]]  #int
int:0..4:w	 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
bool		 245	Bool	=== _  244  [[ 246 ]] [lt]
int:3..5	 196	AddI	=== _  294  311  [[ 294  197  270 ]]  !orig=[152] !jvms: String::hashCode @ bci:42
long:1..3	 307	ConvI2L	=== _  294  [[ 312 ]]  #long:-1..maxint-2
int:-1..1	 197	CmpI	=== _  196  306  [[ 198 ]]  !orig=[173] !jvms: String::hashCode @ bci:30
bool		 198	Bool	=== _  197  [[ 199 ]] [lt] !orig=[174] !jvms: String::hashCode @ bci:30
char[int:>=0]:NotNull:exact+any *	 290	AddP	=== _  53  53  291  [[ 287 ]]  !orig=[149] !jvms: String::hashCode @ bci:39
int:-65535..2162655:w	 297	Phi	===  295  249  151  [[ 296 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
int:1..4	 294	Phi	===  295  279  196  [[ 292  293  307  196 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
int:-65535..2162655:w	 268	Phi	===  266  249  151  [[ 234  240 ]]  #int
long:0..4:w	 257	ConvI2L	=== _  258  [[ 255 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
int:1..5:w	 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
int:-65535..2162655:w	 261	Phi	===  259  23  249  [[ 260 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
int:-2097120..69204960	 248	LShiftI	=== _  249  127  [[ 264  267  300 ]]  !orig=194,[128] !jvms: String::hashCode @ bci:36
{0:control, 1:control}	 246	If	===  266  245  [[ 177  247 ]] P=0.500000, C=-1.000000
int:1..5:w	 270	Phi	===  266  256  196  [[ 278  243 ]]  #int
long:2..6	 312	LShiftL	=== _  307  91  [[ 315 ]] 
int:2..5	 292	AddI	=== _  294  91  [[]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
long:1..4	 293	ConvI2L	=== _  294  [[ 291 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
long:1..4	 307	ConvI2L	=== _  294  [[ 312 ]]  #long:-1..maxint-2
int:0..5:ww	 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
int:-2097120..69204960:w	 264	Phi	===  259  23  248  [[ 260 ]]  #int !orig=192,[128] !jvms: String::hashCode @ bci:36
int:1..6:ww	 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
int:1..6:ww	 270	Phi	===  266  256  196  [[ 278  243 ]]  #int
{0:control, 1:control}	 199	CountedLoopEnd	===  295  198  [[ 242  176 ]] [lt] P=0.986232, C=8524.000000 !orig=[175] !jvms: String::hashCode @ bci:30
char[int:>=0]:NotNull:exact+any *	 287	AddP	=== _  53  290  22  [[ 286 ]]  !orig=148 !jvms: String::hashCode @ bci:39
int:-2162655..2162655:w	 296	SubI	=== _  300  297  [[ 285 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:3..6	 196	AddI	=== _  294  311  [[ 294  197  270 ]]  !orig=[152] !jvms: String::hashCode @ bci:42
long:0..8:w	 255	LShiftL	=== _  257  91  [[ 254 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
int:1..6:ww	 279	CastII	===  277  256  [[ 294 ]]  #int:<=max-1 carry dependency
int:-4259775..69270495:w	 260	SubI	=== _  264  261  [[ 249 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:-2097120..69204960:w	 300	Phi	===  295  248  194  [[ 296 ]]  #int !orig=192,[128] !jvms: String::hashCode @ bci:36
control		 247	IfTrue	===  246  [[ 232  278 ]] #1
int:1..6:ww	 278	CastII	===  247  270  [[ 231 ]]  #int carry dependency
char[int:>=0]:NotNull:exact+any *	 315	AddP	=== _  53  53  312  [[ 148 ]] 
control		 177	IfFalse	===  246  [[ 239 ]] #0 !jvms: String::hashCode @ bci:30
long:2..8	 291	LShiftL	=== _  293  91  [[ 290 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
long:2..8	 312	LShiftL	=== _  307  91  [[ 315 ]] 
int:-2097120..69204960:w	 267	Phi	===  266  248  194  [[ 237 ]]  #int
control		 232	CountedLoop	===  232  247  236  [[ 231  232  234  235  237 ]] inner stride: 1 post of N200 !orig=[200],[191],[118] !jvms: String::hashCode @ bci:33
int:0..6:www	 258	Phi	===  259  23  256  [[ 256  257 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
control		 176	IfTrue	===  199  [[ 295 ]] #1 !jvms: String::hashCode @ bci:30
char		 286	LoadUS	===  206  7  287  [[ 285 ]]  @char[int:>=0]:exact+any *, idx=7; #char !orig=150 !jvms: String::hashCode @ bci:39
int:-2162655..2228190:w	 285	AddI	=== _  296  286  [[ 284  129 ]]  !orig=151,[182] !jvms: String::hashCode @ bci:40
int:1..6:ww	 294	Phi	===  295  279  196  [[ 292  293  307  196 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
control		 242	IfFalse	===  199  [[ 266 ]] #0
long:0..6:www	 257	ConvI2L	=== _  258  [[ 255 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
int:-4259775..69336030:w	 249	AddI	=== _  260  250  [[ 248  261  268  297 ]]  !orig=151,[182] !jvms: String::hashCode @ bci:40
int:-4259775..69270495:w	 296	SubI	=== _  300  297  [[ 285 ]]  !orig=129 !jvms: String::hashCode @ bci:36
int:-2097120..69204960:w	 237	Phi	===  232  267  221  [[ 233 ]]  #int !orig=192,[128] !jvms: String::hashCode @ bci:36
{0:top, 1:top}	 235	CountedLoopEnd	===  232  225  [[ 236  238 ]] [lt] P=0.500000, C=8524.000000 !orig=199,[175] !jvms: String::hashCode @ bci:30
char[int:>=0]:NotNull:exact+any *	 148	AddP	=== _  53  315  316  [[ 150 ]]  !jvms: String::hashCode @ bci:39
control		 239	Region	===  239  238  177  [[ 239  33  184  240 ]] 
int:-65535..2162655:w	 234	Phi	===  232  268  222  [[ 233 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
int:2..7:ww	 292	AddI	=== _  294  91  [[]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
long:1..6:ww	 293	ConvI2L	=== _  294  [[ 291 ]]  #long:0..maxint-1 !orig=[146] !jvms: String::hashCode @ bci:39
long:1..6:ww	 307	ConvI2L	=== _  294  [[ 312 ]]  #long:-1..maxint-2
int:1..6:ww	 231	Phi	===  232  278  229  [[ 229  230 ]]  #int #tripcount !orig=[122] !jvms: String::hashCode @ bci:33
int:1..7:www	 256	AddI	=== _  258  91  [[ 253  258  270  274  279 ]]  !orig=196,[152] !jvms: String::hashCode @ bci:42
int:-4259775..69336030:ww	 297	Phi	===  295  249  151  [[ 296 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
int:-69204960..71302080:w	 284	LShiftI	=== _  285  127  [[ 129 ]]  !orig=194,[128] !jvms: String::hashCode @ bci:36
int:3..8:ww	 196	AddI	=== _  294  311  [[ 294  197  270 ]]  !orig=[152] !jvms: String::hashCode @ bci:42
int:1..8:www	 270	Phi	===  266  256  196  [[ 278  243 ]]  #int
long:0..12:www	 255	LShiftL	=== _  257  91  [[ 254 ]]  !orig=[147] !jvms: String::hashCode @ bci:39
int:-4259775..69336030:ww	 261	Phi	===  259  23  249  [[ 260 ]]  #int !orig=121 !jvms: String::hashCode @ bci:33
int:-4259775..69336030:w	 285	AddI	=== _  296  286  [[ 284  129 ]]  !orig=151,[182] !jvms: String::hashCode @ bci:40
int:-4259775..69270495:w	 233	SubI	=== _  237  234  [[ 222 ]]  !orig=129 !jvms: String::hashCode @ bci:36
char		 150	LoadUS	===  206  7  148  [[ 151 ]]  @char[int:>=0]:exact+any *, idx=7; #char !jvms: String::hashCode @ bci:39
int		 248	LShiftI	=== _  249  127  [[ 264  267  300 ]]  !orig=194,[128] !jvms: String::hashCode @ bci:36
int:-65535..2162655:w	 240	Phi	===  239  222  268  [[ 63  184 ]]  #int

[error output omitted]

Comment 22 Severin Gehwolf 2015-04-14 15:20:46 UTC
Created attachment 1014401 [details]
gdb commands file in order to get to the error condition

Comment 23 Severin Gehwolf 2015-04-14 15:23:26 UTC
Invoke gdb as follows and you should get to the point where the assertion triggers. The rhbz_1208369_gdb_commands.txt file is the one coming from comment 22.

JDK=/path/to/jdk \
gdb -x rhbz_1208369_gdb_commands.txt --args \
 $JDK/bin/java \
 -classpath $JDK/lib/tools.jar:$JDK/classes \
 -Dapplication.home=$JDK \
 -Xms8m \
 -XX:+PrintCompilation \
 -XX:+TracePhaseCCP \
 -XX:-TieredCompilation \
 -XX:CICompilerCount=1 \
 com.sun.tools.javac.Main -d . ../../TestCryptoLevel.java

Comment 24 Severin Gehwolf 2015-04-14 15:26:43 UTC
example gdb back trace once you hit the breakpoint in src/share/vm/opto/type.hpp:1488.

(gdb) bt
#0  ccp_type_widens (t0=<optimized out>, t=<optimized out>) at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/opto/phaseX.cpp:1486
#1  PhaseCCP::analyze (this=<optimized out>) at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/opto/phaseX.cpp:1513
#2  0x00007ffff6d602f9 in Compile::Optimize (this=this@entry=0x7fffd1842d10)
    at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/opto/compile.cpp:2173
#3  0x00007ffff6d63820 in Compile::Compile (this=<optimized out>, ci_env=<optimized out>, compiler=<optimized out>, target=<optimized out>, osr_bci=<optimized out>, subsume_loads=<optimized out>, 
    do_escape_analysis=true, eliminate_boxing=true) at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/opto/compile.cpp:856
#4  0x00007ffff6c1753a in C2Compiler::compile_method (this=0x7ffff0150c10, env=0x7fffd18439e0, target=0x7fffc402b5c0, entry_bci=-1)
    at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/opto/c2compiler.cpp:121
#5  0x00007ffff6d71273 in CompileBroker::invoke_compiler_on_method (task=task@entry=0x7ffff0192480)
    at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/compiler/compileBroker.cpp:1993
#6  0x00007ffff6d734ff in CompileBroker::compiler_thread_loop ()
    at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/compiler/compileBroker.cpp:1815
#7  0x00007ffff7684be0 in JavaThread::thread_main_inner (this=this@entry=0x7ffff0161800)
    at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/runtime/thread.cpp:1698
#8  0x00007ffff7684e16 in JavaThread::run (this=0x7ffff0161800) at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/share/vm/runtime/thread.cpp:1678
#9  0x00007ffff745feb2 in java_start (thread=0x7ffff0161800) at /home/sgehwolf/Documents/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/hotspot/src/os/linux/vm/os_linux.cpp:828
#10 0x000000368ea07555 in start_thread (arg=0x7fffd1844700) at pthread_create.c:333
#11 0x000000368ef01f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Comment 25 Omair Majid 2015-04-14 21:10:59 UTC
(In reply to Omair Majid from comment #17)
> I built the fastdebug variant and javac is reproducibly crashing:
> 
> $
> /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.
> x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/java -version
> openjdk version "1.8.0_40-fastdebug"
> OpenJDK Runtime Environment (build 1.8.0_40-fastdebug-b25)
> OpenJDK 64-Bit Server VM (build 25.40-b25-fastdebug, mixed mode)
> $
> /home/omajid/java-1.8.0-openjdk/java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.
> x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -d .
> /home/omajid/java-1.8.0-openjdk/TestCryptoLevel.java

Building with "-fno-tree-vrp" added to C(XX)FLAGS makes it work for me.

$ java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/java -version
openjdk version "1.8.0_40-fastdebug"
OpenJDK Runtime Environment (build 1.8.0_40-fastdebug-b25)
OpenJDK 64-Bit Server VM (build 25.40-b25-fastdebug, mixed mode)

$ \time -pv java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -d . TestCryptoLevel.java 
        Command being timed: "java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -d . TestCryptoLevel.java"
        User time (seconds): 2.88
        System time (seconds): 0.11
        Percent of CPU this job got: 144%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.08
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 114240
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 10
        Minor (reclaiming a frame) page faults: 39638
        Voluntary context switches: 1230
        Involuntary context switches: 715
        Swaps: 0
        File system inputs: 12248
        File system outputs: 8
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0

Comment 26 Omair Majid 2015-04-14 21:39:57 UTC
And on a normal ("release") build with "-fno-tree-vrp":

$ java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/java -version
openjdk version "1.8.0_40"
OpenJDK Runtime Environment (build 1.8.0_40-b25)
OpenJDK 64-Bit Server VM (build 25.40-b25, mixed mode)

$ \time -pv java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -d . TestCryptoLevel.java 
        Command being timed: "java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64/jdk8/build/jdk8.build/images/j2sdk-image/bin/javac -d . TestCryptoLevel.java"
        User time (seconds): 0.94
        System time (seconds): 0.10
        Percent of CPU this job got: 68%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:01.53
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 49412
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 93
        Minor (reclaiming a frame) page faults: 15943
        Voluntary context switches: 1440
        Involuntary context switches: 661
        Swaps: 0
        File system inputs: 44040
        File system outputs: 8
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0

That's about 50 MB max memory usage and ~100 major page faults.

Comment 27 Severin Gehwolf 2015-04-15 08:32:32 UTC
I see Omair built it in rawhide and f22. Mikolaj, gil, could you please test if this build works for you?

https://koji.fedoraproject.org/koji/taskinfo?taskID=9480919

Meanwhile I'll look further into as to what goes wrong with tree-vrp turned on.

Comment 28 Severin Gehwolf 2015-04-15 10:27:03 UTC
With broken java-1.8.0-openjdk-1.8.0.40-26.b25.fc22.x86_64

$ rpm -qa | grep java-1.8.0-openjdk
java-1.8.0-openjdk-devel-1.8.0.40-26.b25.fc22.x86_64
java-1.8.0-openjdk-1.8.0.40-26.b25.fc22.x86_64
java-1.8.0-openjdk-headless-1.8.0.40-26.b25.fc22.x86_64

$ rm TestCryptoLevel.class 
$ \time -pv javac TestCryptoLevel.java
	Command being timed: "javac TestCryptoLevel.java"
	User time (seconds): 4.26
	System time (seconds): 1.44
	Percent of CPU this job got: 26%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:21.69
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 1868164
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 501
	Minor (reclaiming a frame) page faults: 658860
	Voluntary context switches: 3981
	Involuntary context switches: 1757
	Swaps: 0
	File system inputs: 73152
	File system outputs: 8
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

Reproducer from comment 0 (result: java process killed by OOM killer, build never succeeded for me).

$ \time -pv ../apache-maven-3.3.1/bin/mvn -V verify
Command terminated by signal 9
	Command being timed: "../apache-maven-3.3.1/bin/mvn -V verify"
	User time (seconds): 22.74
	System time (seconds): 26.87
	Percent of CPU this job got: 43%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 1:54.48
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 1876212
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 130254
	Minor (reclaiming a frame) page faults: 1501664
	Voluntary context switches: 153745
	Involuntary context switches: 36356
	Swaps: 0
	File system inputs: 4982744
	File system outputs: 15216
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0


---------------------------------------------------------


With fixed java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64

$ rpm -qa | grep java-1.8.0-openjdk
java-1.8.0-openjdk-1.8.0.40-27.b25.fc22.x86_64
java-1.8.0-openjdk-devel-1.8.0.40-27.b25.fc22.x86_64
java-1.8.0-openjdk-headless-1.8.0.40-27.b25.fc22.x86_64

$ rm TestCryptoLevel.class 
$ \time -pv javac TestCryptoLevel.java
	Command being timed: "javac TestCryptoLevel.java"
	User time (seconds): 0.60
	System time (seconds): 0.04
	Percent of CPU this job got: 150%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.43
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 60108
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 0
	Minor (reclaiming a frame) page faults: 16694
	Voluntary context switches: 652
	Involuntary context switches: 384
	Swaps: 0
	File system inputs: 2000
	File system outputs: 8
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

Reproducer from comment 0 (result: build passes).

$ \time -pv ../apache-maven-3.3.1/bin/mvn -V verify
[...]
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:03 min
[INFO] Finished at: 2015-04-15T12:23:18+02:00
[INFO] Final Memory: 64M/268M
[INFO] ------------------------------------------------------------------------
	Command being timed: "../apache-maven-3.3.1/bin/mvn -V verify"
	User time (seconds): 105.84
	System time (seconds): 6.00
	Percent of CPU this job got: 89%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 2:05.01
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 558700
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 22
	Minor (reclaiming a frame) page faults: 907339
	Voluntary context switches: 112797
	Involuntary context switches: 108481
	Swaps: 0
	File system inputs: 6528
	File system outputs: 163048
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0

Comment 29 Severin Gehwolf 2015-04-16 15:14:37 UTC
It looks like type.o gets compiled wrong by GCC 5 with value range propagation for trees optimization turned on.

Comment 30 Severin Gehwolf 2015-04-17 15:06:56 UTC
Created attachment 1015629 [details]
Proposed patch for working around type.o miscompilation.

Comment 31 Severin Gehwolf 2015-04-17 15:08:39 UTC
Patch in comment 30 fixes the problem for me too. No need to set C(XX)FLAGS.

Comment 32 Severin Gehwolf 2015-04-24 12:04:29 UTC
I've filed gcc bug 1215127 since I've failed to find the offending snippet in that file. Hopefully gcc people have more luck.

Comment 33 Severin Gehwolf 2015-04-27 12:03:06 UTC
Created attachment 1019303 [details]
Proposed patch fixing signed integer overflow in type.cpp

This patch fixes hotspot to not rely on undefined behaviour. See https://bugzilla.redhat.com/show_bug.cgi?id=1215127#c5 With this patch applied, java-1.8.0-openjdk builds fine for me (release/fastdebug) and does not show the issue.

Comment 34 Severin Gehwolf 2015-04-27 14:22:03 UTC
Upstream review thread: http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2015-April/017759.html

Comment 36 Fedora Update System 2015-04-30 08:21:18 UTC
java-1.8.0-openjdk-1.8.0.45-36.b13.fc22 has been submitted as an update for Fedora 22.
https://admin.fedoraproject.org/updates/java-1.8.0-openjdk-1.8.0.45-36.b13.fc22

Comment 37 Fedora Update System 2015-05-01 16:39:44 UTC
Package java-1.8.0-openjdk-1.8.0.45-36.b13.fc22:
* should fix your issue,
* was pushed to the Fedora 22 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing java-1.8.0-openjdk-1.8.0.45-36.b13.fc22'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2015-7301/java-1.8.0-openjdk-1.8.0.45-36.b13.fc22
then log in and leave karma (feedback).

Comment 38 Fedora Update System 2015-05-03 17:23:15 UTC
java-1.8.0-openjdk-1.8.0.45-36.b13.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.


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