docs/ReleaseNotes.html


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
                      "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <link rel="stylesheet" href="llvm.css" type="text/css">
  <title>LLVM 2.7 Release Notes</title>
</head>
<body>

<div class="doc_title">LLVM 2.7 Release Notes</div>

<img align=right src="http://llvm.org/img/DragonSmall.png"
    width="136" height="136">

<ol>
  <li><a href="#intro">Introduction</a></li>
  <li><a href="#subproj">Sub-project Status Update</a></li>
  <li><a href="#externalproj">External Projects Using LLVM 2.7</a></li>
  <li><a href="#whatsnew">What's New in LLVM 2.7?</a></li>
  <li><a href="GettingStarted.html">Installation Instructions</a></li>
  <li><a href="#portability">Portability and Supported Platforms</a></li>
  <li><a href="#knownproblems">Known Problems</a></li>
  <li><a href="#additionalinfo">Additional Information</a></li>
</ol>

<div class="doc_author">
  <p>Written by the <a href="http://llvm.org">LLVM Team</a></p>
</div>

<h1 style="color:red">These are in-progress notes for the upcoming LLVM 2.7
release.<br>
You may prefer the
<a href="http://llvm.org/releases/2.6/docs/ReleaseNotes.html">LLVM 2.6
Release Notes</a>.</h1>

<!-- *********************************************************************** -->
<div class="doc_section">
  <a name="intro">Introduction</a>
</div>
<!-- *********************************************************************** -->

<div class="doc_text">

<p>This document contains the release notes for the LLVM Compiler
Infrastructure, release 2.7.  Here we describe the status of LLVM, including
major improvements from the previous release and significant known problems.
All LLVM releases may be downloaded from the <a
href="http://llvm.org/releases/">LLVM releases web site</a>.</p>

<p>For more information about LLVM, including information about the latest
release, please check out the <a href="http://llvm.org/">main LLVM
web site</a>.  If you have questions or comments, the <a
href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM Developer's
Mailing List</a> is a good place to send them.</p>

<p>Note that if you are reading this file from a Subversion checkout or the
main LLVM web page, this document applies to the <i>next</i> release, not the
current one.  To see the release notes for a specific release, please see the
<a href="http://llvm.org/releases/">releases page</a>.</p>


<p>FIXME: llvm.org moved to new server, mention new logo, Ted and Doug new code
   owners.</p>

</div>
 

<!--
Almost dead code.
  include/llvm/Analysis/LiveValues.h => Dan
  lib/Transforms/IPO/MergeFunctions.cpp => consider for 2.8.
  llvm/Analysis/PointerTracking.h => Edwin wants this, consider for 2.8.
  ABCD, SCCVN, GEPSplitterPass
  MSIL backend?
  lib/Transforms/Utils/SSI.cpp  -> ABCD depends on it.
-->
 
   
<!-- Features that need text if they're finished for 2.7:
  gcc plugin.
  strong phi elim
  variable debug info for optimized code
  postalloc scheduler: anti dependence breaking, hazard recognizer?
  metadata
  loop dependence analysis
  ELF Writer?  How stable?
  <li>PostRA scheduler improvements, ARM adoption (David Goodwin).</li>
 -->

 <!-- for announcement email:
 Logo web page.
 llvm devmtg
 compiler_rt
 KLEE web page at klee.llvm.org
 Many new papers added to /pubs/
 Mention gcc plugin.
   -->

<!-- *********************************************************************** -->
<div class="doc_section">
  <a name="subproj">Sub-project Status Update</a>
</div>
<!-- *********************************************************************** -->

<div class="doc_text">
<p>
The LLVM 2.7 distribution currently consists of code from the core LLVM
repository (which roughly includes the LLVM optimizers, code generators
and supporting tools), the Clang repository and the llvm-gcc repository.  In
addition to this code, the LLVM Project includes other sub-projects that are in
development.  Here we include updates on these subprojects.
</p>

</div>


<!--=========================================================================-->
<div class="doc_subsection">
<a name="clang">Clang: C/C++/Objective-C Frontend Toolkit</a>
</div>

<div class="doc_text">

<p>The <a href="http://clang.llvm.org/">Clang project</a> is ...</p>

<p>In the LLVM 2.7 time-frame, the Clang team has made many improvements:</p>

<ul>
<li>FIXME: C++! Include a link to cxx_compatibility.html</li>

<li>FIXME: Static Analyzer improvements?</li>

<li>CIndex API and Python bindings: Clang now includes a C API as part of the
CIndex library. Although we make make some changes to the API in the future, it
is intended to be stable and has been designed for use by external projects. See
the Clang
doxygen <a href="http://clang.llvm.org/doxygen/group__CINDEX.html">CIndex</a>
documentation for more details. The CIndex API also includings an preliminary
set of Python bindings.</li>

<li>ARM Support: Clang now has ABI support for both the Darwin and Linux ARM
ABIs. Coupled with many improvements to the LLVM ARM backend, Clang is now
suitable for use as a a beta quality ARM compiler.</li>
</ul>
</div>

<!--=========================================================================-->
<div class="doc_subsection">
<a name="clangsa">Clang Static Analyzer</a>
</div>

<div class="doc_text"