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add vmkit and rewrite clang section

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52102 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2008-06-08 21:58:17 +00:00
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docs/ReleaseNotes.html
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@ -13,6 +13,7 @@
<ol>
<li><a href="#intro">Introduction</a></li>
<li><a href="#changes">Major Changes and Sub-project Status</a></li>
<li><a href="#whatsnew">What's New?</a></li>
<li><a href="GettingStarted.html">Installation Instructions</a></li>
<li><a href="#portability">Portability and Supported Platforms</a></li>
@ -55,7 +56,7 @@ current one. To see the release notes for a specific releases, please see the
<!-- *********************************************************************** -->
<div class="doc_section">
<a name="whatsnew">What's New?</a>
<a name="changes">Major Changes and Sub-project Status</a>
</div>
<!-- *********************************************************************** -->
@ -116,22 +117,79 @@ It includes a large number of features and refinements from LLVM 2.2.</p>
</div>
<div class="doc_text">
<p>
The core LLVM 2.3 distribution currently consists of code from the core LLVM
repository (which roughly contains the LLVM optimizer, code generators and
supporting tools) and the llvm-gcc repository. In addition to this code, the
LLVM Project includes other sub-projects that are in development. The two which
are the most actively developed are the new <a href="#vmkit">vmkit Project</a>
and the <a href="#clang">Clang Project</a>.
</p>
</div>
<!--=========================================================================-->
<div class="doc_subsubsection">
<a name="vmkit">vmkit</a>
</div>
<div class="doc_text">
<p>
The "vmkit" project is a new addition to the LLVM family. It is an
implementation of a JVM and a CLI Virtual Machines (Microsoft .NET is an
implementation of the CLI) using the Just-In-Time compiler of LLVM.</p>
<p>The JVM, called JnJVM, executes real-world applications such as Apache
projects (e.g. Felix and Tomcat) and the SpecJVM98 benchmark. It uses the GNU
Classpath project for the base classes. The CLI implementation, called N3, is
its in early stages but can execute simple applications and the "pnetmark"
benchmark. It uses the pnetlib project as its core library.</p>
<p>The 'vmkit' VMs compare in performance with industrial and top open-source
VMs on scientific applications. Besides the JIT, the VMs use many features of
the LLVM framework, including the standard set of optimizations, atomic
operations, custom function provider and memory manager for JITed methods, and
specific virtual machine optimizations. vmkit is not an official part of LLVM
2.3 release. It is publicly available under the LLVM license and can be
downloaded from:
</p>
<p>
<p>The <a href="http://clang.llvm.org/">clang project</a> is an effort to build
a set of new 'llvm native' front-end technologies for the LLVM optimizer
and code generator. Currently, its C and Objective-C support is maturing
nicely, and it has advanced source-to-source analysis and transformation
capabilities. If you are interested in building source-level tools for C and
Objective-C (and eventually C++), you should take a look. However, note that
clang is not an official part of the LLVM 2.3 release. If you are interested in
this project, please see its <a href="http://clang.llvm.org/">web site</a>.</p>
<tt>svn co http://llvm.org/svn/llvm-project/vmkit/trunk vmkit</tt>
</p>
</div>
<!--=========================================================================-->
<div class="doc_subsubsection">
<a name="clang">Clang</a>
</div>
<div class="doc_text">
<p>The <a href="http://clang.llvm.org/">Clang project</a> is an effort to build
a set of new 'LLVM native' front-end technologies for the LLVM optimizer
and code generator. Clang is continuing to make major strides forward in all
areas. Its C and Objective-C parsing support is very solid, and the code
generation support is far enough along to build many C applications. While not
yet production quality, it is progressing very nicely. In addition, C++
front-end work has started to make significant progress.</p>
<p>At this point, Clang is most useful if you are interested in source-to-source
transformations (such as refactoring) and other source-level tools for C and
Objective-C. Clang now also includes tools for turning C code into pretty HTML,
and includes a new <a href="http://clang.llvm.org/StaticAnalysis.html">static
analysis tool</a> in development. This tool is automatically focused on finding
bugs in C and Objective-C code.</p>
</div>
<!-- *********************************************************************** -->
<div class="doc_section">
<a name="whatsnew">What's New?</a>
</div>
<!-- *********************************************************************** -->
<!--=========================================================================-->
<div class="doc_subsection">
<a name="majorfeatures">Major New Features</a>
@ -156,7 +214,6 @@ this project, please see its <a href="http://clang.llvm.org/">web site</a>.</p>
the ability to return multiple registers from functions, and we use MRVs to
accomplish this in a direct way.</p></li>
<li><p>LLVM 2.3 includes a complete reimplementation of the "<tt>llvmc</tt>"
tool. It is designed to overcome several problems with the original
<tt>llvmc</tt> and to provide a superset of the features of the
@ -176,7 +233,6 @@ this project, please see its <a href="http://clang.llvm.org/">web site</a>.</p>
</ul></p>
</li>
<li><p>LLVM 2.3 includes a completely rewritten interface for <a
href="LinkTimeOptimization.html">Link Time Optimization</a>. This interface
is written in C, which allows for easier integration with C code bases, and
@ -205,6 +261,8 @@ this project, please see its <a href="http://clang.llvm.org/">web site</a>.</p>
<p>llvm-gcc 4.2 includes numerous fixes to better support the Objective-C
front-end. Objective-C now works very well on Mac OS/X.</p>
<p>Fortran EQUIVALENCEs are now supported by the gfortran front-end.</p>
<p>llvm-gcc 4.2 includes many other fixes which improve conformance with the
relevant parts of the GCC testsuite.</p>