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From "Geir Magnusson Jr (JIRA)" <j...@apache.org>
Subject [jira] Closed: (HARMONY-1363) [drlvm] Java 1.5, 64 bit support, JVMTI improvements
Date Thu, 14 Sep 2006 22:38:27 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-1363?page=all ]

Geir Magnusson Jr closed HARMONY-1363.
--------------------------------------


> [drlvm] Java 1.5, 64 bit support, JVMTI improvements
> ----------------------------------------------------
>
>                 Key: HARMONY-1363
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1363
>             Project: Harmony
>          Issue Type: New Feature
>          Components: Contributions, DRLVM
>         Environment: Linux/i686, Windows/i686, Linux/x86_64, Linux/ia64
>            Reporter: Salikh Zakirov
>         Assigned To: Geir Magnusson Jr
>         Attachments: BBC.patch
>
>
> This patch includes:
> * Java 1.5 support
> * Intel 64 (aka EM64T aka x86_64) support in VM and JIT 
> * IA-64 (aka IPF) code generator in JIT 
> * Improvements in JIT code
> * Improvements in JVMTI support
> New JIT features and improvements
> ---------------------------------
> * Software-based edge profiling framework 
> * High-Level Optimizer enabled (client and server, static and recompilation
>   modes, edge profile support) 
> * Compilation Pipeline Management Framework (PMF) - consistent configuration
>   control based on system properties 
> * Unified Control Flow Graph (CFG) and basic algorithms for the high-level
>   optimizer and the IA-32/Intel 64 Code Generator 
> * Unified logging system for both Jitrino.JET and Jitrino.OPT 
> * More comments added to interface header files 
> * New high-level optimizations developed: 
> * Escape Analysis based synchronization elimination (prototype for Windows/IA-32 only)

> * Optimization for System.arraycopy calls 
> * Moving ldInterface out of the loop 
> IA-32/Intel 64 Code Generator
> -----------------------------
> * Graph Coloring register allocator implemented 
> * Optimization for loading String constants 
> Bugs in the JIT code fixed
> --------------------------
> * uncaught exception in case HLO turn on 
> * jitrino.dll failure during gc execution 
> * DRLVM crashes on Linux IA-32 with "-Xjit opt::skip=off" switch 
> * OPT fails with statprof before inliner 
> * bytecode mapping does not estimate CFG extension from inliner 
> * Memory leaks in Jitrino MemoryManager 
> * Memory leak in DrlEMFactory::createAndInitEMInstance() for emInstance 
> * Memory leak in RuntimeInterface::getGCRootSet() for gcSite 
> * mpegaudio hangs in -Xem opt mode 
> * Memory leak in LazyExceptionOpt::doLazyExceptionOpt() for optCandidates 
> * Memory leak in LazyExceptionOpt::addOptCandidates() for thrinst 
> * VM can not start threads which throw a lot of exceptions 
> * Jitrino.OPT does not call finalize() method of some exception class 
> * incorrect usage of Flow Graph 
> * incorrect usage of lazyexc opt pass 
> * Arithmetic helpers should be changed to directly generated code 
> * Jitrino.OPT crashes when null value is assigned to some field of non-existent type

> Java 1.5 support
> ----------------
> * Added complete parsing of the v49 class-files format; 
> * Implemented all 1.5 runtime features of kernel classes; 
> * Implemented Java assertions; 
> * Simplified and optimized reflection mechanism; 
> * Added ldc class_literal support to Jitrino.OPT; 
> * Assorted fixes in verifier, class support, kernels, etc. 
> * Added the unit test suite for all kernel classes. 
> JVMTI support
> -------------
> * JIT is the default execution mode when JVMTI is enabled
> * Support of METHOD_ENTRY/EXIT events implemented in Jitrino.JET 
> * Decoding capabilities has been added to IA32/EM64T encoder 
> * Implemented ExceptionCatch, MethodEntry/MethodExit and field watches for JIT
> * Implemented ExceptionCatch support in interpreter
> * Fixed GetObjectMonitorUsge function
> * Fixed DisposeEnvironment function
> * Fixed checks for validity of class objects
> * Fixed bug in RelinquishCapabilities function (Fixed bug in code, that resets global
capabilities)
> * Fixed check for JVMTI_ERROR_INVALID_THREAD_GROUP error
> * Fixed JVMTI Extensions implementation
> * Fixed JVMTI breakpoints on JIT not to handle anything when JVMTI is not enabled
> * Fixed method entry event: frame.ip should be initialized before the callback on interpreter
> Known issues
> ------------
> * Intel 64 needs Intel 64-compatible class library to run 
> * IA-64 support is not complete 

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