[patch] shark + assertions + llvm2.6 on X86 and ARM
Xerxes Rånby
xerxes at zafena.se
Tue Apr 14 06:55:16 PDT 2009
Cheers
I have been playing with Shark combined with the recent llvm (pre2.6)
svn trunk on ARM during the easter weekend:
If someone want to try to improve shark and llvm i have attached some
patches to use on icedtea6
* mixtec-hacks.patch : tweaked version of Garys mixtec hacks patch to
apply on current icedtea tip. it enables assertions and makes a nice
debuggable build.
original mixtec-hacks fetched from
http://gbenson.net/wp-content/uploads/2008/08/mixtec-hacks.patch
* sharkCompiler_fnmatch.patch : prevents a compile error when compiling
using assertions on X86
/home/xerxes/icedtea6/openjdk-ecj/hotspot/src/share/vm/shark/sharkCompiler.cpp:152:
error: 'fnmatch' was not declared in this scope
* llvm-2.6-compat-patch : patches shark to compile against current llvm
svn trunk (pre2.6) rev 69038
* On ARM I have also applied the Shark reroute LLVM atomic intrinsics to
Zero patch found in:
http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2009-March/005255.html
Now for some demonstrations of all the current fun you can have using
shark on ARM:
root at overo:/home/xerxes/shark_java_test/success/Hello# java -version
java version "1.6.0_0"
OpenJDK Runtime Environment (build 1.6.0_0-b14)
OpenJDK Shark VM (build 14.0-b08-product, mixed mode)
root at overo:/home/xerxes/shark_java_test/success/Hello# java
-XX:+PrintCompilation -XX:+SharkTraceInstalls -XX:+VerifyBeforeGC Hello
[Verifying threads permgen tenured generation def new generation remset
ref_proc syms strs zone dict hand C-heap ]
1 java.lang.String::hashCode (60 bytes)
[0x6799a010-0x6799a2c8): java.lang.String::hashCode (696 bytes code)
Hello World!
Hello World works and shark does insert the jited code. Nice :)
Running something less trivial like java -X
root at overo:/home/xerxes/shark_java_test/success/Hello# java
-XX:+PrintCompilation -XX:+SharkTraceInstalls -XX:+VerifyBeforeGC -X
[Verifying threads permgen tenured generation def new generation remset
ref_proc syms strs zone dict hand C-heap ]
1 java.lang.String::hashCode (60 bytes)
[0x6799a010-0x6799a2c8): java.lang.String::hashCode (696 bytes code)
2 java.lang.String::charAt (33 bytes)
[0x6799a2d0-0x6799a4f4): java.lang.String::charAt (548 bytes code)
3 ! sun.nio.cs.US_ASCII$Encoder::encodeArrayLoop (279 bytes)
[0x6799a500-0x6799bbf4): sun.nio.cs.US_ASCII$Encoder::encodeArrayLoop
(5876 bytes code)
4 ! java.io.BufferedReader::readLine (304 bytes)
[0x6799bc00-0x6799cb84): java.io.BufferedReader::readLine (3972 bytes code)
5 ! sun.nio.cs.US_ASCII$Decoder::decodeArrayLoop (241 bytes)
[0x6799cb90-0x6799d9d0): sun.nio.cs.US_ASCII$Decoder::decodeArrayLoop
(3648 bytes code)
6 java.lang.String::equals (88 bytes)
[0x6799d9e0-0x6799e268): java.lang.String::equals (2184 bytes code)
7 java.lang.String::indexOf (151 bytes)
[0x6799e270-0x6799e6a0): java.lang.String::indexOf (1072 bytes code)
8 java.lang.String::lastIndexOf (156 bytes)
[0x6799e6b0-0x6799ea68): java.lang.String::lastIndexOf (952 bytes code)
9 java.util.Properties$LineReader::readLine (452 bytes)
[0x6799ea70-0x6799fa30): java.util.Properties$LineReader::readLine
(4032 bytes code)
10 java.util.Properties::loadConvert (505 bytes)
[0x6799fa40-0x679a06c8): java.util.Properties::loadConvert (3208 bytes
code)
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/bytecodeInterpreter.cpp:854
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error
(/usr/src/openembedded/overo/tmp/work/armv7a-angstrom-linux-gnueabi/openjdk-6-shark-jre-6b14-r3/icedtea6-1.4.1+hg20090912/openjdk/hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp:854),
pid=14277, tid=1090688144
# Error: assert(topOfStack < istate->stack_base(),"Stack underrun")
#
# Java VM: OpenJDK Shark VM (14.0-b08-product mixed mode linux-arm )
# Distribution: Built on Ubuntu 8.04.2
# An error report file with more information is saved as:
# /home/xerxes/shark_java_test/success/Hello/hs_err_pid14277.log
#
# If you would like to submit a bug report, please include
# instructions how to reproduce the bug and visit:
# http://icedtea.classpath.org/bugzilla
#
Current thread is 1090688144
Dumping core ...
Aborted
root at overo:/home/xerxes/shark_java_test/success/Hello#
try again...
root at overo:/home/xerxes/shark_java_test/success/Hello# java
-XX:SuppressErrorAt=/bytecodeInterpreter.cpp:854 -X
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/linkResolver.cpp:71
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error
(/usr/src/openembedded/overo/tmp/work/armv7a-angstrom-linux-gnueabi/openjdk-6-shark-jre-6b14-r3/icedtea6-1.4.1+hg20090912/openjdk/hotspot/src/share/vm/interpreter/linkResolver.cpp:71),
pid=14307, tid=1090688144
# Error: assert(resolved_method->signature() ==
selected_method->signature(),"signatures must correspond")
#
# Java VM: OpenJDK Shark VM (14.0-b08-product mixed mode linux-arm )
# Distribution: Built on Ubuntu 8.04.2
# An error report file with more information is saved as:
# /home/xerxes/shark_java_test/success/Hello/hs_err_pid14307.log
#
# If you would like to submit a bug report, please include
# instructions how to reproduce the bug and visit:
# http://icedtea.classpath.org/bugzilla
#
Current thread is 1090688144
Dumping core ...
Aborted
try again...
root at overo:/home/xerxes/shark_java_test/success/Hello# java
-XX:SuppressErrorAt=/bytecodeInterpreter.cpp:854
-XX:SuppressErrorAt=/linkResolver.cpp:71 -X
-Xmixed mixed mode execution (default)
-Xint interpreted mode execution only
-Xbootclasspath:<directories and zip/jar files separated by :>
set search path for bootstrap classes and resources
-Xbootclasspath/a:<directories and zip/jar files separated by :>
append to end of bootstrap class path
-Xbootclasspath/p:<directories and zip/jar files separated by :>
prepend in front of bootstrap class path
-Xnoclassgc disable class garbage collection
-Xincgc enable incremental garbage collection
-Xloggc:<file> log GC status to a file with time stamps
-Xbatch disable background compilation
-Xms<size> set initial Java heap size
-Xmx<size> set maximum Java heap size
-Xss<size> set java thread stack size
-Xprof output cpu profiling data
-Xfuture enable strictest checks, anticipating future default
-Xrs reduce use of OS signals by Java/VM (see
documentation)
-Xcheck:jni perform additional checks for JNI functions
-Xshare:off do not attempt to use shared class data
-Xshare:auto use shared class data if possible (default)
-Xshare:on require using shared class data, otherwise fail.
The -X options are non-standard and subject to change without notice.
root at overo:/home/xerxes/shark_java_test/success/Hello# echo $?
0
root at overo:/home/xerxes/shark_java_test/success/Hello#
... ok we try again this time using all the nice options like
-XX:+PrintCompilation -XX:+SharkTraceInstalls -XX:+VerifyBeforeGC
and have fun of observing all strange errors in llvm:
root at overo:/home/xerxes/shark_java_test/success/Hello# java
-XX:SuppressErrorAt=/bytecodeInterpreter.cpp:854
-XX:SuppressErrorAt=/linkResolver.cpp:71 -XX:+PrintCompilation
-XX:+SharkTraceInstalls -XX:+VerifyBeforeGC -X
[Verifying threads permgen tenured generation def new generation remset
ref_proc syms strs zone dict hand C-heap ]
1 java.lang.String::hashCode (60 bytes)
[0x6799a010-0x6799a2c8): java.lang.String::hashCode (696 bytes code)
2 java.lang.String::charAt (33 bytes)
[0x6799a2d0-0x6799a4f4): java.lang.String::charAt (548 bytes code)
3 ! sun.nio.cs.US_ASCII$Encoder::encodeArrayLoop (279 bytes)
[0x6799a500-0x6799bbf4): sun.nio.cs.US_ASCII$Encoder::encodeArrayLoop
(5876 bytes code)
4 ! java.io.BufferedReader::readLine (304 bytes)
java:
/usr/src/openembedded/overo/tmp/work/armv7a-angstrom-linux-gnueabi/llvm2.6-2.5+svnr69038-r2/trunk/lib/ExecutionEngine/JIT/JIT.cpp:518:
void llvm::JIT::runJITOnFunctionUnlocked(llvm::Function*, const
llvm::MutexGuard&): Assertion `!isAlreadyCodeGenerating && "Error:
Recursive compilation detected!"' failed.
Stack dump:
0. Running pass 'Linear Scan Register Allocator' on function
'@"java.io.BufferedReader::readLine"'
Aborted
root at overo:/home/xerxes/shark_java_test/success/Hello#
If someone want root at overo:/home/xerxes/shark_java_test/success/Hello#
java -XX:SuppressErrorAt=/bytecodeInterpreter.cpp:854
-XX:SuppressErrorAt=/linkResolver.cpp:71 -XX:+Pr
intCompilation -XX:+SharkTraceInstalls -XX:+VerifyBeforeGC -X
[Verifying threads permgen tenured generation def new generation remset
ref_proc syms strs zone dict hand C-heap ]
1 java.lang.String::hashCode (60 bytes)
[0x6799a010-0x6799a2c8): java.lang.String::hashCode (696 bytes code)
2 java.lang.String::charAt (33 bytes)
[0x6799a2d0-0x6799a4f4): java.lang.String::charAt (548 bytes code)
3 ! sun.nio.cs.US_ASCII$Encoder::encodeArrayLoop (279 bytes)
[0x6799a500-0x6799bbf4): sun.nio.cs.US_ASCII$Encoder::encodeArrayLoop
(5876 bytes code)
4 ! java.io.BufferedReader::readLine (304 bytes)
java:
/usr/src/openembedded/overo/tmp/work/armv7a-angstrom-linux-gnueabi/llvm2.6-2.5+svnr69038-r2/trunk/lib/ExecutionEngine/JIT/JIT.cpp:518:
void llvm::JIT::runJITOnFunctionUnlocked(llvm::Function*, const
llvm::MutexGuard&): Assertion `!isAlreadyCodeGenerating && "Error:
Recursive compilation detected!"' failed.
Stack dump:
0. Running pass 'Linear Scan Register Allocator' on function
'@"java.io.BufferedReader::readLine"'
Aborted
root at overo:/home/xerxes/shark_java_test/success/Hello#
On X86 the assertions reports that Shark have some stack issues:
http://mail.openjdk.java.net/pipermail/zero-dev/2009-April/000074.html
Cheers and have a great day!
Xerxes
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