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<link rel="stylesheet" href="llvm.css" type="text/css">
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<title>LLVM 2.7 Release Notes</title>
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2003-11-22 01:38:41 +01:00
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</head>
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<body>
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2010-01-28 02:14:43 +01:00
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<div class="doc_title">LLVM 2.7 Release Notes</div>
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2008-10-13 04:08:34 +02:00
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2010-03-17 05:02:39 +01:00
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<img align=right src="http://llvm.org/img/DragonSmall.png"
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width="136" height="136">
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2003-10-02 06:57:28 +02:00
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<ol>
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<li><a href="#intro">Introduction</a></li>
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<li><a href="#subproj">Sub-project Status Update</a></li>
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<li><a href="#externalproj">External Projects Using LLVM 2.7</a></li>
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<li><a href="#whatsnew">What's New in LLVM 2.7?</a></li>
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2004-05-01 00:17:12 +02:00
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<li><a href="GettingStarted.html">Installation Instructions</a></li>
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<li><a href="#portability">Portability and Supported Platforms</a></li>
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<li><a href="#knownproblems">Known Problems</a></li>
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<li><a href="#additionalinfo">Additional Information</a></li>
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</ol>
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2004-05-23 23:07:27 +02:00
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<div class="doc_author">
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<p>Written by the <a href="http://llvm.org">LLVM Team</a></p>
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2003-11-22 01:38:41 +01:00
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</div>
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2010-04-13 08:37:00 +02:00
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<!--
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2010-01-28 02:14:43 +01:00
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<h1 style="color:red">These are in-progress notes for the upcoming LLVM 2.7
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release.<br>
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You may prefer the
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<a href="http://llvm.org/releases/2.6/docs/ReleaseNotes.html">LLVM 2.6
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2010-04-13 08:37:00 +02:00
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Release Notes</a>.</h1>-->
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2010-01-28 02:14:43 +01:00
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2003-10-02 06:57:28 +02:00
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<!-- *********************************************************************** -->
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2003-11-22 01:38:41 +01:00
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<div class="doc_section">
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<a name="intro">Introduction</a>
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</div>
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2003-10-02 06:57:28 +02:00
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<!-- *********************************************************************** -->
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2003-11-22 01:38:41 +01:00
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<div class="doc_text">
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2008-10-13 19:57:36 +02:00
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<p>This document contains the release notes for the LLVM Compiler
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2010-01-28 02:14:43 +01:00
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Infrastructure, release 2.7. Here we describe the status of LLVM, including
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2008-10-13 19:57:36 +02:00
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major improvements from the previous release and significant known problems.
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2009-03-01 19:09:47 +01:00
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All LLVM releases may be downloaded from the <a
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2008-10-13 19:57:36 +02:00
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href="http://llvm.org/releases/">LLVM releases web site</a>.</p>
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2003-10-02 18:38:05 +02:00
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2004-12-07 09:04:13 +01:00
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<p>For more information about LLVM, including information about the latest
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2005-10-29 09:07:09 +02:00
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release, please check out the <a href="http://llvm.org/">main LLVM
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2003-10-07 23:38:31 +02:00
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web site</a>. If you have questions or comments, the <a
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2010-03-17 05:41:49 +01:00
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href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM Developer's
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Mailing List</a> is a good place to send them.</p>
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2003-10-02 06:57:28 +02:00
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2008-10-13 04:08:34 +02:00
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<p>Note that if you are reading this file from a Subversion checkout or the
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2007-09-21 05:54:09 +02:00
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main LLVM web page, this document applies to the <i>next</i> release, not the
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2008-10-14 13:00:32 +02:00
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current one. To see the release notes for a specific release, please see the
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2007-09-21 05:54:09 +02:00
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<a href="http://llvm.org/releases/">releases page</a>.</p>
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2003-11-22 01:38:41 +01:00
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2010-03-17 05:41:49 +01:00
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2010-03-17 07:41:58 +01:00
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<p>FIXME: llvm.org moved to new server, mention new logo, Ted and Doug new code
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2010-04-16 08:20:22 +02:00
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owners, web page in llvm-www repos.</p>
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2010-03-17 05:41:49 +01:00
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2003-11-22 01:38:41 +01:00
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</div>
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2009-10-13 19:48:04 +02:00
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<!--
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Almost dead code.
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include/llvm/Analysis/LiveValues.h => Dan
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lib/Transforms/IPO/MergeFunctions.cpp => consider for 2.8.
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llvm/Analysis/PointerTracking.h => Edwin wants this, consider for 2.8.
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2010-04-13 08:37:00 +02:00
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ABCD, GEPSplitterPass
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2010-01-16 22:25:13 +01:00
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MSIL backend?
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2010-03-17 07:41:58 +01:00
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lib/Transforms/Utils/SSI.cpp -> ABCD depends on it.
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2009-10-13 19:48:04 +02:00
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-->
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2010-01-28 02:14:43 +01:00
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<!-- Features that need text if they're finished for 2.7:
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gcc plugin.
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strong phi elim
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variable debug info for optimized code
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2009-02-26 23:33:38 +01:00
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postalloc scheduler: anti dependence breaking, hazard recognizer?
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2009-10-13 19:48:04 +02:00
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metadata
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loop dependence analysis
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ELF Writer? How stable?
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<li>PostRA scheduler improvements, ARM adoption (David Goodwin).</li>
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2008-02-10 08:46:44 +01:00
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-->
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2008-10-13 04:08:34 +02:00
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2008-10-12 21:47:48 +02:00
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<!-- for announcement email:
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2009-10-13 19:48:04 +02:00
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Logo web page.
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llvm devmtg
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compiler_rt
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KLEE web page at klee.llvm.org
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Many new papers added to /pubs/
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2010-03-17 07:41:58 +01:00
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Mention gcc plugin.
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2009-02-25 07:34:50 +01:00
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-->
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2008-02-10 08:46:44 +01:00
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2008-10-13 20:01:01 +02:00
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<!-- *********************************************************************** -->
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<div class="doc_section">
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<a name="subproj">Sub-project Status Update</a>
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2006-04-18 08:18:36 +02:00
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</div>
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2008-10-13 20:01:01 +02:00
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<!-- *********************************************************************** -->
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2006-04-18 08:18:36 +02:00
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2007-05-14 08:56:09 +02:00
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<div class="doc_text">
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2008-06-08 23:34:41 +02:00
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<p>
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The LLVM 2.7 distribution currently consists of code from the core LLVM
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repository (which roughly includes the LLVM optimizers, code generators
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and supporting tools), the Clang repository and the llvm-gcc repository. In
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addition to this code, the LLVM Project includes other sub-projects that are in
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development. Here we include updates on these subprojects.
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2009-03-02 05:28:57 +01:00
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</p>
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2008-06-05 08:57:39 +02:00
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2008-06-08 23:58:17 +02:00
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</div>
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2008-06-05 08:57:39 +02:00
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2008-06-08 23:58:17 +02:00
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<!--=========================================================================-->
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2008-10-13 20:01:01 +02:00
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<div class="doc_subsection">
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2008-10-13 20:11:54 +02:00
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<a name="clang">Clang: C/C++/Objective-C Frontend Toolkit</a>
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2008-06-08 23:58:17 +02:00
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</div>
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<div class="doc_text">
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2010-01-28 02:14:43 +01:00
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<p>The <a href="http://clang.llvm.org/">Clang project</a> is ...</p>
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<p>In the LLVM 2.7 time-frame, the Clang team has made many improvements:</p>
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2008-10-27 10:27:33 +01:00
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2008-10-15 01:25:09 +02:00
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<ul>
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2010-03-25 17:09:18 +01:00
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<li>FIXME: C++! Include a link to cxx_compatibility.html</li>
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<li>FIXME: Static Analyzer improvements?</li>
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<li>CIndex API and Python bindings: Clang now includes a C API as part of the
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CIndex library. Although we make make some changes to the API in the future, it
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is intended to be stable and has been designed for use by external projects. See
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the Clang
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doxygen <a href="http://clang.llvm.org/doxygen/group__CINDEX.html">CIndex</a>
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documentation for more details. The CIndex API also includings an preliminary
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set of Python bindings.</li>
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<li>ARM Support: Clang now has ABI support for both the Darwin and Linux ARM
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ABIs. Coupled with many improvements to the LLVM ARM backend, Clang is now
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suitable for use as a a beta quality ARM compiler.</li>
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2009-03-02 05:28:18 +01:00
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</ul>
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2008-10-13 20:11:54 +02:00
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</div>
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<!--=========================================================================-->
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<div class="doc_subsection">
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<a name="clangsa">Clang Static Analyzer</a>
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</div>
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<div class="doc_text">
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2010-01-28 02:14:43 +01:00
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<p>Previously announced in the 2.4, 2.5, and 2.6 LLVM releases, the Clang project also
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2009-02-27 08:01:32 +01:00
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includes an early stage static source code analysis tool for <a
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href="http://clang.llvm.org/StaticAnalysis.html">automatically finding bugs</a>
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2009-10-13 19:48:04 +02:00
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in C and Objective-C programs. The tool performs checks to find
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2009-02-27 08:01:32 +01:00
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bugs that occur on a specific path within a program.</p>
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2010-03-17 05:02:39 +01:00
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<p>In the LLVM 2.7 time-frame, the analyzer core has sprouted legs and...</p>
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2008-06-08 23:58:17 +02:00
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</div>
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2008-10-13 20:01:01 +02:00
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<!--=========================================================================-->
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<div class="doc_subsection">
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2008-10-14 21:23:04 +02:00
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<a name="vmkit">VMKit: JVM/CLI Virtual Machine Implementation</a>
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2008-10-13 20:01:01 +02:00
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</div>
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<div class="doc_text">
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<p>
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2008-10-14 21:23:04 +02:00
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The <a href="http://vmkit.llvm.org/">VMKit project</a> is an implementation of
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2009-10-13 19:48:04 +02:00
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a JVM and a CLI Virtual Machine (Microsoft .NET is an
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implementation of the CLI) using LLVM for static and just-in-time
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compilation.</p>
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2008-10-13 20:01:01 +02:00
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2009-10-13 19:48:04 +02:00
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<p>
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2010-03-29 20:34:13 +02:00
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With the release of LLVM 2.7, VMKit has shifted to a great framework for writing
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virtual machines. VMKit now offers precise and efficient garbage collection with
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multi-threading support, thanks to the MMTk memory management toolkit, as well
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as just in time and ahead of time compilation with LLVM. The major changes in
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VMKit 0.27 are:</p>
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2008-10-13 20:01:01 +02:00
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2008-10-14 21:23:04 +02:00
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<ul>
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2010-03-29 20:34:13 +02:00
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<li>Garbage collection: VMKit now uses the MMTk toolkit for garbage collectors.
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The first collector to be ported is the MarkSweep collector, which is precise,
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and drastically improves the performance of VMKit.</li>
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<li>Line number information in the JVM: by using the debug metadata of LLVM, the
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JVM now supports precise line number information, useful when printing a stack
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trace.</li>
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<li>Interface calls in the JVM: we implemented a variant of the Interface Method
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Table technique for interface calls in the JVM.
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</li>
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2009-02-26 06:20:36 +01:00
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2009-10-13 19:48:04 +02:00
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</ul>
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</div>
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2009-02-26 06:20:36 +01:00
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2009-03-02 10:25:38 +01:00
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2009-10-13 19:48:04 +02:00
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<!--=========================================================================-->
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<div class="doc_subsection">
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<a name="compiler-rt">compiler-rt: Compiler Runtime Library</a>
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</div>
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2009-03-02 10:25:38 +01:00
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2009-10-13 19:48:04 +02:00
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<div class="doc_text">
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<p>
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The new LLVM <a href="http://compiler-rt.llvm.org/">compiler-rt project</a>
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is a simple library that provides an implementation of the low-level
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target-specific hooks required by code generation and other runtime components.
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For example, when compiling for a 32-bit target, converting a double to a 64-bit
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unsigned integer is compiled into a runtime call to the "__fixunsdfdi"
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function. The compiler-rt library provides highly optimized implementations of
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this and other low-level routines (some are 3x faster than the equivalent
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libgcc routines).</p>
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2008-10-14 21:23:04 +02:00
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2009-10-13 19:48:04 +02:00
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<p>
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All of the code in the compiler-rt project is available under the standard LLVM
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License, a "BSD-style" license.</p>
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</div>
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<!--=========================================================================-->
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<div class="doc_subsection">
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2010-04-02 11:23:15 +02:00
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<a name="dragonegg">DragonEgg: llvm-gcc ported to gcc-4.5</a>
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2009-10-13 19:48:04 +02:00
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</div>
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<div class="doc_text">
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<p>
|
2010-04-02 11:23:15 +02:00
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<a href="http://dragonegg.llvm.org/">DragonEgg</a> is a port of llvm-gcc to
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gcc-4.5. Unlike llvm-gcc, which makes many intrusive changes to the underlying
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gcc-4.2 code, dragonegg in theory does not require any gcc-4.5 modifications
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whatsoever (currently one small patch is needed). This is thanks to the new
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<a href="http://gcc.gnu.org/wiki/plugins">gcc plugin architecture</a>, which
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makes it possible to modify the behaviour of gcc at runtime by loading a plugin,
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which is nothing more than a dynamic library which conforms to the gcc plugin
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interface. DragonEgg is a gcc plugin that causes the LLVM optimizers to be run
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instead of the gcc optimizers, and the LLVM code generators instead of the gcc
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code generators, just like llvm-gcc. To use it, you add
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"-fplugin=path/dragonegg.so" to the gcc-4.5 command line, and gcc-4.5 magically
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becomes llvm-gcc-4.5!
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</p>
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<p>
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DragonEgg is still a work in progress. Currently C works very well, while C++,
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Ada and Fortran work fairly well. All other languages either don't work at all,
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or only work poorly. For the moment only the x86-32 and x86-64 targets are
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supported, and only on linux.
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</p>
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<p>
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DragonEgg has not yet been released. Once gcc-4.5 has been released, dragonegg
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will probably be released as part of the following LLVM release.
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2009-10-13 19:48:04 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="mc">llvm-mc: Machine Code Toolkit</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>
|
2010-01-28 02:14:43 +01:00
|
|
|
The LLVM Machine Code (MC) Toolkit project is ...
|
2009-10-13 19:48:04 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
2009-02-26 23:33:38 +01:00
|
|
|
<!-- *********************************************************************** -->
|
|
|
|
|
<div class="doc_section">
|
2010-01-28 02:14:43 +01:00
|
|
|
<a name="externalproj">External Open Source Projects Using LLVM 2.7</a>
|
2009-02-26 23:33:38 +01:00
|
|
|
</div>
|
|
|
|
|
<!-- *********************************************************************** -->
|
|
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<p>An exciting aspect of LLVM is that it is used as an enabling technology for
|
|
|
|
|
a lot of other language and tools projects. This section lists some of the
|
2010-01-28 02:14:43 +01:00
|
|
|
projects that have already been updated to work with LLVM 2.7.</p>
|
2009-10-13 19:48:04 +02:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="Rubinius">Rubinius</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
2010-03-17 05:02:39 +01:00
|
|
|
Need update.
|
|
|
|
|
<!--
|
2009-10-13 19:48:04 +02:00
|
|
|
<p><a href="http://github.com/evanphx/rubinius">Rubinius</a> is an environment
|
|
|
|
|
for running Ruby code which strives to write as much of the core class
|
|
|
|
|
implementation in Ruby as possible. Combined with a bytecode interpreting VM, it
|
|
|
|
|
uses LLVM to optimize and compile ruby code down to machine code. Techniques
|
|
|
|
|
such as type feedback, method inlining, and uncommon traps are all used to
|
|
|
|
|
remove dynamism from ruby execution and increase performance.</p>
|
|
|
|
|
|
|
|
|
|
<p>Since LLVM 2.5, Rubinius has made several major leaps forward, implementing
|
|
|
|
|
a counter based JIT, type feedback and speculative method inlining.
|
2010-03-17 05:02:39 +01:00
|
|
|
-->
|
2009-10-13 19:48:04 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="macruby">MacRuby</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<p>
|
2010-03-17 05:02:39 +01:00
|
|
|
Need update.
|
|
|
|
|
<!--
|
2009-10-13 19:48:04 +02:00
|
|
|
<a href="http://macruby.org">MacRuby</a> is an implementation of Ruby on top of
|
|
|
|
|
core Mac OS X technologies, such as the Objective-C common runtime and garbage
|
|
|
|
|
collector and the CoreFoundation framework. It is principally developed by
|
|
|
|
|
Apple and aims at enabling the creation of full-fledged Mac OS X applications.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
MacRuby uses LLVM for optimization passes, JIT and AOT compilation of Ruby
|
|
|
|
|
expressions. It also uses zero-cost DWARF exceptions to implement Ruby exception
|
2010-03-17 05:02:39 +01:00
|
|
|
handling.--> </p>
|
2009-10-13 19:48:04 +02:00
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
2009-02-26 23:33:38 +01:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="pure">Pure</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>
|
2009-03-02 03:37:32 +01:00
|
|
|
<a href="http://pure-lang.googlecode.com/">Pure</a>
|
|
|
|
|
is an algebraic/functional programming language based on term rewriting.
|
2009-02-26 23:33:38 +01:00
|
|
|
Programs are collections of equations which are used to evaluate expressions in
|
|
|
|
|
a symbolic fashion. Pure offers dynamic typing, eager and lazy evaluation,
|
2009-03-01 19:09:47 +01:00
|
|
|
lexical closures, a hygienic macro system (also based on term rewriting),
|
2009-02-26 23:33:38 +01:00
|
|
|
built-in list and matrix support (including list and matrix comprehensions) and
|
|
|
|
|
an easy-to-use C interface. The interpreter uses LLVM as a backend to
|
|
|
|
|
JIT-compile Pure programs to fast native code.</p>
|
|
|
|
|
|
2010-03-17 18:25:49 +01:00
|
|
|
<p>Pure versions 0.43 and later have been tested and are known to work with
|
|
|
|
|
LLVM 2.7 (and continue to work with older LLVM releases >= 2.5).</p>
|
|
|
|
|
|
2009-02-26 23:33:38 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="ldc">LLVM D Compiler</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>
|
2010-03-17 05:02:39 +01:00
|
|
|
Need update.
|
|
|
|
|
<!--
|
2009-03-02 03:37:32 +01:00
|
|
|
<a href="http://www.dsource.org/projects/ldc">LDC</a> is an implementation of
|
|
|
|
|
the D Programming Language using the LLVM optimizer and code generator.
|
2009-10-13 19:48:04 +02:00
|
|
|
The LDC project works great with the LLVM 2.6 release. General improvements in
|
2009-03-02 16:28:15 +01:00
|
|
|
this
|
2009-03-02 03:37:32 +01:00
|
|
|
cycle have included new inline asm constraint handling, better debug info
|
2009-10-13 19:48:04 +02:00
|
|
|
support, general bug fixes and better x86-64 support. This has allowed
|
|
|
|
|
some major improvements in LDC, getting it much closer to being as
|
2010-03-17 05:02:39 +01:00
|
|
|
fully featured as the original DMD compiler from DigitalMars.-->
|
2009-02-26 23:33:38 +01:00
|
|
|
</p>
|
|
|
|
|
</div>
|
|
|
|
|
|
2009-02-28 19:58:01 +01:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="RoadsendPHP">Roadsend PHP</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>
|
|
|
|
|
<a href="http://code.roadsend.com/rphp">Roadsend PHP</a> (rphp) is an open
|
2009-03-02 20:07:24 +01:00
|
|
|
source implementation of the PHP programming
|
2009-10-13 19:48:04 +02:00
|
|
|
language that uses LLVM for its optimizer, JIT and static compiler. This is a
|
2010-03-17 05:02:39 +01:00
|
|
|
reimplementation of an earlier project that is now based on LLVM.
|
2010-03-17 18:25:49 +01:00
|
|
|
</p>
|
2009-02-28 19:58:01 +01:00
|
|
|
</div>
|
2009-02-26 23:33:38 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="UnladenSwallow">Unladen Swallow</a>
|
2008-06-08 23:58:17 +02:00
|
|
|
</div>
|
|
|
|
|
|
2008-06-09 00:59:35 +02:00
|
|
|
<div class="doc_text">
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>
|
|
|
|
|
<a href="http://code.google.com/p/unladen-swallow/">Unladen Swallow</a> is a
|
|
|
|
|
branch of <a href="http://python.org/">Python</a> intended to be fully
|
|
|
|
|
compatible and significantly faster. It uses LLVM's optimization passes and JIT
|
2010-03-18 07:52:15 +01:00
|
|
|
compiler.
|
2010-03-17 05:02:39 +01:00
|
|
|
</p>
|
2008-06-09 00:59:35 +02:00
|
|
|
</div>
|
|
|
|
|
|
2008-06-08 23:34:41 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2009-10-13 19:48:04 +02:00
|
|
|
<a name="llvm-lua">llvm-lua</a>
|
2008-06-08 23:34:41 +02:00
|
|
|
</div>
|
2008-06-05 20:39:01 +02:00
|
|
|
|
2008-06-08 23:34:41 +02:00
|
|
|
<div class="doc_text">
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>
|
2010-03-17 05:02:39 +01:00
|
|
|
Need update.
|
|
|
|
|
<!--
|
2009-10-13 19:48:04 +02:00
|
|
|
<a href="http://code.google.com/p/llvm-lua/">LLVM-Lua</a> uses LLVM to add JIT
|
|
|
|
|
and static compiling support to the Lua VM. Lua bytecode is analyzed to
|
|
|
|
|
remove type checks, then LLVM is used to compile the bytecode down to machine
|
2010-03-17 05:02:39 +01:00
|
|
|
code.-->
|
|
|
|
|
</p>
|
2009-10-13 19:48:04 +02:00
|
|
|
</div>
|
2008-06-05 08:57:39 +02:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="icedtea">IcedTea Java Virtual Machine Implementation</a>
|
|
|
|
|
</div>
|
2008-06-05 08:57:39 +02:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>
|
2010-03-17 05:02:39 +01:00
|
|
|
Need update.
|
|
|
|
|
<!--
|
2009-10-13 19:48:04 +02:00
|
|
|
<a href="http://icedtea.classpath.org/wiki/Main_Page">IcedTea</a> provides a
|
|
|
|
|
harness to build OpenJDK using only free software build tools and to provide
|
|
|
|
|
replacements for the not-yet free parts of OpenJDK. One of the extensions that
|
|
|
|
|
IcedTea provides is a new JIT compiler named <a
|
|
|
|
|
href="http://icedtea.classpath.org/wiki/ZeroSharkFaq">Shark</a> which uses LLVM
|
|
|
|
|
to provide native code generation without introducing processor-dependent
|
2010-03-17 05:02:39 +01:00
|
|
|
code.-->
|
2009-10-13 19:48:04 +02:00
|
|
|
</p>
|
|
|
|
|
</div>
|
2009-02-25 07:34:50 +01:00
|
|
|
|
|
|
|
|
|
2010-03-29 19:50:39 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="tce">TTA-based Codesign Environment (TCE)</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>
|
|
|
|
|
<a href="http://tce.cs.tut.fi/">TCE</a> is a toolset for designing
|
|
|
|
|
application-specific processors (ASP) based on the Transport triggered
|
|
|
|
|
architecture (TTA). The toolset provides a complete co-design flow from C/C++
|
|
|
|
|
programs down to synthesizable VHDL and parallel program binaries. Processor
|
|
|
|
|
customization points include the register files, function units, supported
|
|
|
|
|
operations, and the interconnection network.</p>
|
|
|
|
|
|
|
|
|
|
<p>TCE uses llvm-gcc/Clang and LLVM for C/C++ language support, target
|
|
|
|
|
independent optimizations and also for parts of code generation. It generates
|
|
|
|
|
new LLVM-based code generators "on the fly" for the designed TTA processors and
|
|
|
|
|
loads them in to the compiler backend as runtime libraries to avoid per-target
|
|
|
|
|
recompilation of larger parts of the compiler chain.</p>
|
|
|
|
|
|
|
|
|
|
</div>
|
2009-02-26 08:29:17 +01:00
|
|
|
|
2010-04-06 16:52:14 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="safecode">SAFECode Compiler</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>
|
|
|
|
|
<a href="http://safecode.cs.illinois.edu">SAFECode</a> is a memory safe C
|
|
|
|
|
compiler built using LLVM. It takes standard, unannotated C code, analyzes the
|
|
|
|
|
code to ensure that memory accesses and array indexing operations are safe, and
|
|
|
|
|
instruments the code with run-time checks when safety cannot be proven
|
|
|
|
|
statically.
|
|
|
|
|
</p>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<!-- *********************************************************************** -->
|
|
|
|
|
<div class="doc_section">
|
2010-01-28 02:14:43 +01:00
|
|
|
<a name="whatsnew">What's New in LLVM 2.7?</a>
|
2009-10-13 19:48:04 +02:00
|
|
|
</div>
|
|
|
|
|
<!-- *********************************************************************** -->
|
2009-02-26 08:29:17 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<div class="doc_text">
|
2008-06-05 08:57:39 +02:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>This release includes a huge number of bug fixes, performance tweaks and
|
|
|
|
|
minor improvements. Some of the major improvements and new features are listed
|
|
|
|
|
in this section.
|
|
|
|
|
</p>
|
2008-02-06 19:00:06 +01:00
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2009-10-13 19:48:04 +02:00
|
|
|
<a name="majorfeatures">Major New Features</a>
|
2008-02-06 19:00:06 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
2010-01-28 02:14:43 +01:00
|
|
|
<p>LLVM 2.7 includes several major new capabilities:</p>
|
2008-02-06 19:00:06 +01:00
|
|
|
|
2008-06-09 00:59:35 +02:00
|
|
|
<ul>
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2008-06-09 08:06:18 +02:00
|
|
|
</ul>
|
2008-06-05 08:25:56 +02:00
|
|
|
|
2010-03-17 05:41:49 +01:00
|
|
|
Extensible metadata solid.
|
|
|
|
|
|
|
|
|
|
Debug info improvements: using metadata instead of llvm.dbg global variables.
|
|
|
|
|
This brings several enhancements including improved compile times.
|
|
|
|
|
|
|
|
|
|
New instruction selector.
|
|
|
|
|
GHC Haskell ABI/ calling conv support.
|
|
|
|
|
Pre-Alpha support for unions in IR.
|
|
|
|
|
New InlineHint and StackAlignment function attributes
|
|
|
|
|
Code generator MC'ized except for debug info and EH.
|
|
|
|
|
New SCEV AA pass: -scev-aa
|
|
|
|
|
Inliner reuses arrays allocas when inlining multiple callers to reduce stack usage.
|
|
|
|
|
MC encoding and disassembler apis.
|
|
|
|
|
Optimal Edge Profiling?
|
|
|
|
|
Instcombine is now a library, has its own IRBuilder to simplify itself.
|
|
|
|
|
New llvm/Support/Regex.h API. FileCheck now does regex's
|
2010-03-17 07:41:58 +01:00
|
|
|
Many subtle pointer invalidation bugs in Callgraph have been fixed and it now uses asserting value handles.
|
|
|
|
|
MC Disassembler (with blog post), MCInstPrinter. Many X86 backend and AsmPrinter simplifications
|
|
|
|
|
Various tools like llc and opt now read either .ll or .bc files as input.
|
2010-03-29 20:42:42 +02:00
|
|
|
Malloc and free instructions got removed, along with LowerAllocations pass.
|
2010-03-17 07:41:58 +01:00
|
|
|
compiler-rt support for ARM.
|
|
|
|
|
completely llvm-gcc NEON support.
|
|
|
|
|
Can transcode from GAS to intel syntax with "llvm-mc foo.s -output-asm-variant=1"
|
|
|
|
|
JIT debug information with GDB 7.0
|
2010-03-17 19:15:52 +01:00
|
|
|
New CodeGen Level CSE
|
2010-03-17 07:41:58 +01:00
|
|
|
CMake can now run tests, what other improvements?
|
2010-03-17 19:15:52 +01:00
|
|
|
ARM/Thumb using reg scavenging for stack object address materialization (PEI).
|
2010-03-17 07:41:58 +01:00
|
|
|
New SSAUpdater and MachineSSAUpdater classes for unstructured ssa updating,
|
|
|
|
|
changed jump threading, GVN, etc to use it which simplified them and speed
|
|
|
|
|
them up.
|
2010-03-17 07:42:25 +01:00
|
|
|
Combiner-AA improvements, why not on by default?
|
2010-03-17 19:15:52 +01:00
|
|
|
Pre-regalloc tail duplication
|
2010-04-13 08:37:00 +02:00
|
|
|
x86 sibcall / tailcall optimization in CCC mode.
|
2010-04-16 08:20:22 +02:00
|
|
|
New LSR with "full strength reduction" mode. Description?
|
|
|
|
|
Codegen level OptimizeExtsPass pass, takes advantage of x86 subregs.
|
2010-04-13 08:37:00 +02:00
|
|
|
Better code size analysis in loop unswitch, inliner code split out to a new
|
|
|
|
|
CodeMetrics class for reuse.
|
2010-03-29 20:39:28 +02:00
|
|
|
The ARM backend now has good support for ARMv4 backend (tested on StrongARM
|
|
|
|
|
hardware), previously only supported ARMv4T and newer.
|
2010-04-13 08:37:00 +02:00
|
|
|
Half-float support in APFloat
|
|
|
|
|
Indirect branch + address of label (blog post), particularly useful for interpreters.
|
2010-04-16 08:20:22 +02:00
|
|
|
Many changes to the pass ordering for improved optimization effectiveness.
|
|
|
|
|
BasicAA improved to be less dependent on "type safe" pointers, it can now look
|
|
|
|
|
through bitcasts more aggressively.
|
|
|
|
|
GVN PHI Translation improvements. blog post: http://blog.llvm.org/2009/12/advanced-topics-in-redundant-load.html
|
|
|
|
|
llvm.objectsize.
|
|
|
|
|
MachineSSAUpdater.h
|
|
|
|
|
PostRA scheduler for X86?
|
|
|
|
|
llvm.dbg.value, not being used by default though, more in 2.8. Many improvements to debug info
|
|
|
|
|
Support for the GCC option -fno-schedule-insns
|
|
|
|
|
non-temporal load/store
|
|
|
|
|
libllvm2.7.so?? configure with --enable-shared
|
|
|
|
|
dbgs() and -debug-buffer-size=N
|
|
|
|
|
New MicroBlaze backend. http://en.wikipedia.org/wiki/MicroBlaze
|
|
|
|
|
XMM subreg modeling for extraction of the low element.
|
|
|
|
|
|
2010-04-13 08:37:00 +02:00
|
|
|
|
|
|
|
|
Opt now works conservatively if no target data is set (is this fully working?)
|
|
|
|
|
Target data now has notion of 'native' integer data types which optimizations can use.
|
|
|
|
|
ARM backend generates instructions in unified assembly syntax.
|
|
|
|
|
New Analysis/InstructionSimplify.h interface for simplifying instructions that don't exist.
|
|
|
|
|
Jump threading is now much more aggressive at simplifying correlated
|
|
|
|
|
conditionals and threading blocks with otherwise complex logic. CondProp pass
|
|
|
|
|
removed (functionality merged into jump threading).
|
|
|
|
|
X86 and XCore supports returning arbitrary return values, returning too many values is
|
|
|
|
|
supported by returning through a hidden pointer.
|
|
|
|
|
verbose-asm now produces information about spill slots and loop nests
|
2010-03-17 19:15:52 +01:00
|
|
|
|
2010-03-17 07:41:58 +01:00
|
|
|
|
2010-04-16 08:20:22 +02:00
|
|
|
Defaults to RTTI off (smaller code size!), packagers should build with make REQUIRE_RTTI=1.
|
|
|
|
|
AndersAA got removed
|
|
|
|
|
PredSimplify, LoopVR, GVNPRE, RSProfiling (random sampling profiling) got removed.
|
2010-03-17 05:41:49 +01:00
|
|
|
LLVM command line tools now overwrite their output, before they would only do this with -f.
|
|
|
|
|
DOUT removed, use DEBUG(errs() instead.
|
|
|
|
|
Much stuff converted to use raw_ostream instead of std::ostream.
|
|
|
|
|
TargetAsmInfo renamed to MCAsmInfo
|
|
|
|
|
llvm/ADT/iterator.h gone.
|
|
|
|
|
|
2010-03-17 07:41:58 +01:00
|
|
|
|
2007-05-14 08:56:09 +02:00
|
|
|
</div>
|
|
|
|
|
|
2008-02-10 09:17:19 +01:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2009-03-02 03:37:32 +01:00
|
|
|
<a name="coreimprovements">LLVM IR and Core Improvements</a>
|
2008-02-10 09:17:19 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>LLVM IR has several new features for better support of new targets and that
|
|
|
|
|
expose new optimization opportunities:</p>
|
2008-02-10 09:17:19 +01:00
|
|
|
|
2008-06-09 00:59:35 +02:00
|
|
|
<ul>
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2008-02-10 09:17:19 +01:00
|
|
|
</ul>
|
2008-10-13 04:08:34 +02:00
|
|
|
|
2008-02-10 09:17:19 +01:00
|
|
|
</div>
|
|
|
|
|
|
2007-09-21 05:54:09 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2008-02-10 08:46:44 +01:00
|
|
|
<a name="optimizer">Optimizer Improvements</a>
|
2007-09-21 05:54:09 +02:00
|
|
|
</div>
|
2007-05-18 08:33:02 +02:00
|
|
|
|
2006-04-18 08:18:36 +02:00
|
|
|
<div class="doc_text">
|
2007-09-21 05:54:09 +02:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>In addition to a large array of minor performance tweaks and bug fixes, this
|
2008-10-13 23:50:36 +02:00
|
|
|
release includes a few major enhancements and additions to the optimizers:</p>
|
2007-09-26 07:44:21 +02:00
|
|
|
|
2006-11-18 08:51:14 +01:00
|
|
|
<ul>
|
2007-05-17 01:25:46 +02:00
|
|
|
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-03-02 03:37:32 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
</ul>
|
|
|
|
|
|
2010-03-01 20:29:17 +01:00
|
|
|
<p>Also, -anders-aa was removed</p>
|
|
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
</div>
|
2009-03-02 03:37:32 +01:00
|
|
|
|
|
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="executionengine">Interpreter and JIT Improvements</a>
|
|
|
|
|
</div>
|
2009-03-02 03:37:32 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<div class="doc_text">
|
2008-10-12 21:47:48 +02:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<ul>
|
2010-01-29 20:10:38 +01:00
|
|
|
<li>The JIT now <a
|
|
|
|
|
href="http://llvm.org/viewvc/llvm-project?view=rev&revision=85295">defaults
|
|
|
|
|
to compiling eagerly</a> to avoid a race condition in the lazy JIT.
|
|
|
|
|
Clients that still want the lazy JIT can switch it on by calling
|
|
|
|
|
<tt>ExecutionEngine::DisableLazyCompilation(false)</tt>.</li>
|
2010-02-11 02:07:39 +01:00
|
|
|
<li>It is now possible to create more than one JIT instance in the same process.
|
|
|
|
|
These JITs can generate machine code in parallel,
|
|
|
|
|
although <a href="http://llvm.org/docs/ProgrammersManual.html#jitthreading">you
|
|
|
|
|
still have to obey the other threading restrictions</a>.</li>
|
2008-06-08 04:45:07 +02:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2009-03-02 04:24:11 +01:00
|
|
|
<a name="codegen">Target Independent Code Generator Improvements</a>
|
2008-06-08 04:45:07 +02:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
2009-03-01 19:09:47 +01:00
|
|
|
<p>We have put a significant amount of work into the code generator
|
|
|
|
|
infrastructure, which allows us to implement more aggressive algorithms and make
|
|
|
|
|
it run faster:</p>
|
2008-06-08 04:45:07 +02:00
|
|
|
|
|
|
|
|
<ul>
|
2009-03-02 03:37:32 +01:00
|
|
|
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2006-11-18 08:51:14 +01:00
|
|
|
</ul>
|
2006-04-18 08:18:36 +02:00
|
|
|
</div>
|
|
|
|
|
|
2009-03-02 03:37:32 +01:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="x86">X86-32 and X86-64 Target Improvements</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>New features of the X86 target include:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
2009-03-02 08:54:14 +01:00
|
|
|
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-10-13 19:48:04 +02:00
|
|
|
|
2009-03-02 03:37:32 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
2007-09-21 05:54:09 +02:00
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2009-02-26 08:32:11 +01:00
|
|
|
<a name="pic16">PIC16 Target Improvements</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>New features of the PIC16 target include:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-02-26 08:32:11 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
<p>Things not yet supported:</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
<li>Variable arguments.</li>
|
2009-03-02 04:24:11 +01:00
|
|
|
<li>Interrupts/programs.</li>
|
2009-02-26 08:32:11 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="ARM">ARM Target Improvements</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>New features of the ARM target include:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-10-13 19:48:04 +02:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</div>
|
2009-02-26 08:32:11 +01:00
|
|
|
|
2009-03-01 03:30:21 +01:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
2009-10-13 19:48:04 +02:00
|
|
|
<a name="OtherTarget">Other Target Specific Improvements</a>
|
2009-03-01 03:30:21 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>New features of other targets include:
|
|
|
|
|
</p>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
|
|
|
|
<ul>
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-10-13 19:48:04 +02:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="newapis">New Useful APIs</a>
|
|
|
|
|
</div>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<div class="doc_text">
|
2009-03-01 03:30:21 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<p>This release includes a number of new APIs that are used internally, which
|
|
|
|
|
may also be useful for external clients.
|
|
|
|
|
</p>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<ul>
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-10-13 19:48:04 +02:00
|
|
|
</ul>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
|
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
</div>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="otherimprovements">Other Improvements and New Features</a>
|
|
|
|
|
</div>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<div class="doc_text">
|
|
|
|
|
<p>Other miscellaneous features include:</p>
|
2009-03-01 03:30:21 +01:00
|
|
|
|
2009-10-13 19:48:04 +02:00
|
|
|
<ul>
|
2010-01-28 02:14:43 +01:00
|
|
|
<li>...</li>
|
2009-03-01 03:30:21 +01:00
|
|
|
</ul>
|
2008-06-05 10:02:49 +02:00
|
|
|
|
2008-10-13 04:08:34 +02:00
|
|
|
</div>
|
2008-06-05 10:02:49 +02:00
|
|
|
|
|
|
|
|
|
2008-10-13 19:57:36 +02:00
|
|
|
<!--=========================================================================-->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="changes">Major Changes and Removed Features</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
2008-10-14 00:06:31 +02:00
|
|
|
<p>If you're already an LLVM user or developer with out-of-tree changes based
|
2010-01-28 02:14:43 +01:00
|
|
|
on LLVM 2.6, this section lists some "gotchas" that you may run into upgrading
|
2008-10-14 00:06:31 +02:00
|
|
|
from the previous release.</p>
|
2008-10-13 20:01:01 +02:00
|
|
|
|
2008-10-14 00:06:31 +02:00
|
|
|
<ul>
|
2010-02-10 00:03:44 +01:00
|
|
|
<li>The LLVM interpreter now defaults to <em>not</em> using <tt>libffi</tt> even
|
|
|
|
|
if you have it installed. This makes it more likely that an LLVM built on one
|
|
|
|
|
system will work when copied to a similar system. To use <tt>libffi</tt>,
|
|
|
|
|
configure with <tt>--enable-libffi</tt>.
|
|
|
|
|
</li>
|
2008-10-14 00:06:31 +02:00
|
|
|
</ul>
|
2008-10-13 19:57:36 +02:00
|
|
|
|
2008-10-14 00:06:31 +02:00
|
|
|
|
|
|
|
|
<p>In addition, many APIs have changed in this release. Some of the major LLVM
|
|
|
|
|
API changes are:</p>
|
2008-10-13 19:57:36 +02:00
|
|
|
|
|
|
|
|
<ul>
|
2010-01-28 02:41:20 +01:00
|
|
|
<li><tt>ModuleProvider</tt> has been <a
|
|
|
|
|
href="http://llvm.org/viewvc/llvm-project?view=rev&revision=94686">removed</a>
|
|
|
|
|
and its methods moved to <tt>Module</tt> and <tt>GlobalValue</tt>.
|
|
|
|
|
Most clients can remove uses of <tt>ExistingModuleProvider</tt>,
|
|
|
|
|
replace <tt>getBitcodeModuleProvider</tt> with
|
|
|
|
|
<tt>getLazyBitcodeModule</tt>, and pass their <tt>Module</tt> to
|
|
|
|
|
functions that used to accept <tt>ModuleProvider</tt>. Clients who
|
|
|
|
|
wrote their own <tt>ModuleProvider</tt>s will need to derive from
|
|
|
|
|
<tt>GVMaterializer</tt> instead and use
|
|
|
|
|
<tt>Module::setMaterializer</tt> to attach it to a
|
|
|
|
|
<tt>Module</tt>.</li>
|
|
|
|
|
|
|
|
|
|
<li><tt>GhostLinkage</tt> has given up the ghost.
|
|
|
|
|
<tt>GlobalValue</tt>s that have not yet been read from their backing
|
|
|
|
|
storage have the same linkage they will have after being read in.
|
|
|
|
|
Clients must replace calls to
|
|
|
|
|
<tt>GlobalValue::hasNotBeenReadFromBitcode</tt> with
|
|
|
|
|
<tt>GlobalValue::isMaterializable</tt>.</li>
|
2010-02-10 05:09:52 +01:00
|
|
|
|
|
|
|
|
<li>FIXME: Debug info has been totally redone. Add pointers to new APIs. Substantial caveats about compatibility of .ll and .bc files.</li>
|
|
|
|
|
|
2010-02-14 02:47:19 +01:00
|
|
|
<li>The <tt>llvm/Support/DataTypes.h</tt> header has moved
|
|
|
|
|
to <tt>llvm/System/DataTypes.h</tt>.</li>
|
|
|
|
|
|
2010-02-17 18:20:17 +01:00
|
|
|
<li>The <tt>isInteger</tt>, <tt>isIntOrIntVector</tt>, <tt>isFloatingPoint</tt>,
|
|
|
|
|
<tt>isFPOrFPVector</tt> and <tt>isFPOrFPVector</tt> methods have been renamed
|
|
|
|
|
<tt>isIntegerTy</tt>, <tt>isIntOrIntVectorTy</tt>, <tt>isFloatingPointTy</tt>,
|
|
|
|
|
<tt>isFPOrFPVectorTy</tt> and <tt>isFPOrFPVectorTy</tt> respectively.</li>
|
2008-10-14 22:03:43 +02:00
|
|
|
</ul>
|
2009-02-25 05:41:31 +01:00
|
|
|
|
2008-10-13 19:57:36 +02:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2003-10-02 18:38:05 +02:00
|
|
|
<!-- *********************************************************************** -->
|
2003-11-22 01:38:41 +01:00
|
|
|
<div class="doc_section">
|
|
|
|
|
<a name="portability">Portability and Supported Platforms</a>
|
|
|
|
|
</div>
|
2003-10-02 18:38:05 +02:00
|
|
|
<!-- *********************************************************************** -->
|
|
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
<div class="doc_text">
|
|
|
|
|
|
2004-12-08 21:35:47 +01:00
|
|
|
<p>LLVM is known to work on the following platforms:</p>
|
2004-06-01 20:22:41 +02:00
|
|
|
|
|
|
|
|
<ul>
|
2009-03-01 19:09:47 +01:00
|
|
|
<li>Intel and AMD machines (IA32, X86-64, AMD64, EMT-64) running Red Hat
|
2009-10-13 19:48:04 +02:00
|
|
|
Linux, Fedora Core, FreeBSD and AuroraUX (and probably other unix-like
|
|
|
|
|
systems).</li>
|
2009-03-01 19:09:47 +01:00
|
|
|
<li>PowerPC and X86-based Mac OS X systems, running 10.3 and above in 32-bit
|
2009-10-13 19:48:04 +02:00
|
|
|
and 64-bit modes.</li>
|
2008-02-06 19:00:06 +01:00
|
|
|
<li>Intel and AMD machines running on Win32 using MinGW libraries (native).</li>
|
2004-12-07 09:04:13 +01:00
|
|
|
<li>Intel and AMD machines running on Win32 with the Cygwin libraries (limited
|
|
|
|
|
support is available for native builds with Visual C++).</li>
|
2009-10-16 18:30:58 +02:00
|
|
|
<li>Sun x86 and AMD64 machines running Solaris 10, OpenSolaris 0906.</li>
|
2005-05-13 22:28:15 +02:00
|
|
|
<li>Alpha-based machines running Debian GNU/Linux.</li>
|
2004-06-01 20:22:41 +02:00
|
|
|
</ul>
|
|
|
|
|
|
2008-06-05 08:57:39 +02:00
|
|
|
<p>The core LLVM infrastructure uses GNU autoconf to adapt itself
|
2004-05-09 07:28:35 +02:00
|
|
|
to the machine and operating system on which it is built. However, minor
|
|
|
|
|
porting may be required to get LLVM to work on new platforms. We welcome your
|
|
|
|
|
portability patches and reports of successful builds or error messages.</p>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
</div>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
|
|
|
|
<!-- *********************************************************************** -->
|
2003-11-22 01:38:41 +01:00
|
|
|
<div class="doc_section">
|
|
|
|
|
<a name="knownproblems">Known Problems</a>
|
|
|
|
|
</div>
|
2003-10-02 06:57:28 +02:00
|
|
|
<!-- *********************************************************************** -->
|
|
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
<div class="doc_text">
|
|
|
|
|
|
2009-03-01 19:09:47 +01:00
|
|
|
<p>This section contains significant known problems with the LLVM system,
|
2008-11-10 06:40:34 +01:00
|
|
|
listed by component. If you run into a problem, please check the <a
|
2005-10-29 09:07:09 +02:00
|
|
|
href="http://llvm.org/bugs/">LLVM bug database</a> and submit a bug if
|
2003-12-12 22:22:16 +01:00
|
|
|
there isn't already one.</p>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2010-03-17 18:25:49 +01:00
|
|
|
<ul>
|
2009-10-13 19:48:04 +02:00
|
|
|
<li>LLVM will not correctly compile on Solaris and/or OpenSolaris
|
|
|
|
|
using the stock GCC 3.x.x series 'out the box',
|
2009-11-03 22:50:09 +01:00
|
|
|
See: <a href="GettingStarted.html#brokengcc">Broken versions of GCC and other tools</a>.
|
2009-10-13 19:48:04 +02:00
|
|
|
However, A <a href="http://pkg.auroraux.org/GCC">Modern GCC Build</a>
|
|
|
|
|
for x86/x86-64 has been made available from the third party AuroraUX Project
|
|
|
|
|
that has been meticulously tested for bootstrapping LLVM & Clang.</li>
|
|
|
|
|
</ul>
|
|
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
</div>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2004-03-14 03:03:02 +01:00
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="experimental">Experimental features included with this release</a>
|
|
|
|
|
</div>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2004-03-14 03:03:02 +01:00
|
|
|
<div class="doc_text">
|
|
|
|
|
|
2004-05-12 23:46:05 +02:00
|
|
|
<p>The following components of this LLVM release are either untested, known to
|
|
|
|
|
be broken or unreliable, or are in early development. These components should
|
|
|
|
|
not be relied on, and bugs should not be filed against them, but they may be
|
|
|
|
|
useful to some people. In particular, if you would like to work on one of these
|
2008-02-12 07:29:45 +01:00
|
|
|
components, please contact us on the <a
|
|
|
|
|
href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVMdev list</a>.</p>
|
2004-03-14 03:03:02 +01:00
|
|
|
|
|
|
|
|
<ul>
|
2010-03-18 15:31:30 +01:00
|
|
|
<li>The MSIL, Alpha, SPU, MIPS, PIC16, Blackfin, MSP430, SystemZ and MicroBlaze
|
|
|
|
|
backends are experimental.</li>
|
2009-03-02 08:54:14 +01:00
|
|
|
<li>The <tt>llc</tt> "<tt>-filetype=asm</tt>" (the default) is the only
|
2010-03-17 05:41:49 +01:00
|
|
|
supported value for this option. The MachO writer is experimental, and
|
|
|
|
|
works much better in mainline SVN.</li>
|
2004-03-14 03:03:02 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2005-11-08 22:11:33 +01:00
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
2006-11-18 08:51:14 +01:00
|
|
|
<a name="x86-be">Known problems with the X86 back-end</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
2008-06-08 12:24:13 +02:00
|
|
|
<li>The X86 backend does not yet support
|
|
|
|
|
all <a href="http://llvm.org/PR879">inline assembly that uses the X86
|
|
|
|
|
floating point stack</a>. It supports the 'f' and 't' constraints, but not
|
|
|
|
|
'u'.</li>
|
2008-06-08 23:19:07 +02:00
|
|
|
<li>The X86 backend generates inefficient floating point code when configured
|
|
|
|
|
to generate code for systems that don't have SSE2.</li>
|
2008-06-08 21:38:43 +02:00
|
|
|
<li>Win64 code generation wasn't widely tested. Everything should work, but we
|
2009-03-02 16:28:15 +01:00
|
|
|
expect small issues to happen. Also, llvm-gcc cannot build the mingw64
|
|
|
|
|
runtime currently due
|
2008-06-08 12:24:13 +02:00
|
|
|
to <a href="http://llvm.org/PR2255">several</a>
|
2009-03-02 16:28:15 +01:00
|
|
|
<a href="http://llvm.org/PR2257">bugs</a> and due to lack of support for
|
|
|
|
|
the
|
|
|
|
|
'u' inline assembly constraint and for X87 floating point inline assembly.</li>
|
2008-06-09 01:05:11 +02:00
|
|
|
<li>The X86-64 backend does not yet support the LLVM IR instruction
|
2009-03-02 03:37:32 +01:00
|
|
|
<tt>va_arg</tt>. Currently, the llvm-gcc and front-ends support variadic
|
2008-06-09 01:05:11 +02:00
|
|
|
argument constructs on X86-64 by lowering them manually.</li>
|
2006-11-18 08:51:14 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="ppc-be">Known problems with the PowerPC back-end</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
2007-05-15 11:21:28 +02:00
|
|
|
<li>The Linux PPC32/ABI support needs testing for the interpreter and static
|
2007-05-23 06:39:32 +02:00
|
|
|
compilation, and lacks support for debug information.</li>
|
2006-11-18 08:51:14 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
2007-05-14 08:56:09 +02:00
|
|
|
<a name="arm-be">Known problems with the ARM back-end</a>
|
2006-11-18 08:51:14 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
2009-10-13 19:48:04 +02:00
|
|
|
<li>Support for the Advanced SIMD (Neon) instruction set is still incomplete
|
|
|
|
|
and not well tested. Some features may not work at all, and the code quality
|
|
|
|
|
may be poor in some cases.</li>
|
2007-05-23 06:39:32 +02:00
|
|
|
<li>Thumb mode works only on ARMv6 or higher processors. On sub-ARMv6
|
2007-09-26 17:59:54 +02:00
|
|
|
processors, thumb programs can crash or produce wrong
|
2007-05-23 06:39:32 +02:00
|
|
|
results (<a href="http://llvm.org/PR1388">PR1388</a>).</li>
|
2009-03-02 16:28:15 +01:00
|
|
|
<li>Compilation for ARM Linux OABI (old ABI) is supported but not fully tested.
|
2007-05-14 08:56:09 +02:00
|
|
|
</li>
|
2006-11-18 08:51:14 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
2007-05-14 08:56:09 +02:00
|
|
|
<a name="sparc-be">Known problems with the SPARC back-end</a>
|
2006-11-18 08:51:14 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
2009-03-02 16:28:15 +01:00
|
|
|
<li>The SPARC backend only supports the 32-bit SPARC ABI (-m32); it does not
|
2007-05-14 08:56:09 +02:00
|
|
|
support the 64-bit SPARC ABI (-m64).</li>
|
2006-11-18 08:51:14 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
2008-10-25 16:56:26 +02:00
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="mips-be">Known problems with the MIPS back-end</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
<li>64-bit MIPS targets are not supported yet.</li>
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
2006-11-18 08:51:14 +01:00
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="alpha-be">Known problems with the Alpha back-end</a>
|
2005-11-08 22:11:33 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
2006-11-18 08:51:14 +01:00
|
|
|
|
|
|
|
|
<li>On 21164s, some rare FP arithmetic sequences which may trap do not have the
|
|
|
|
|
appropriate nops inserted to ensure restartability.</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
2007-05-14 08:56:09 +02:00
|
|
|
<a name="c-be">Known problems with the C back-end</a>
|
2006-11-18 08:51:14 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
|
|
|
|
|
|
|
|
|
<ul>
|
2008-06-05 08:35:40 +02:00
|
|
|
<li><a href="http://llvm.org/PR802">The C backend has only basic support for
|
|
|
|
|
inline assembly code</a>.</li>
|
2007-09-26 08:01:35 +02:00
|
|
|
<li><a href="http://llvm.org/PR1658">The C backend violates the ABI of common
|
|
|
|
|
C++ programs</a>, preventing intermixing between C++ compiled by the CBE and
|
2009-03-02 13:02:51 +01:00
|
|
|
C++ code compiled with <tt>llc</tt> or native compilers.</li>
|
2008-02-10 14:40:55 +01:00
|
|
|
<li>The C backend does not support all exception handling constructs.</li>
|
2009-02-25 12:51:54 +01:00
|
|
|
<li>The C backend does not support arbitrary precision integers.</li>
|
2006-11-18 08:51:14 +01:00
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</div>
|
2005-11-08 22:11:33 +01:00
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
|
|
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
2010-03-17 05:41:49 +01:00
|
|
|
<a name="c-fe">Known problems with the llvm-gcc C and C++ front-end</a>
|
2003-11-22 01:38:41 +01:00
|
|
|
</div>
|
2003-10-02 07:07:23 +02:00
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
<div class="doc_text">
|
2006-03-03 01:34:26 +01:00
|
|
|
|
2008-06-05 08:35:40 +02:00
|
|
|
<p>The only major language feature of GCC not supported by llvm-gcc is
|
|
|
|
|
the <tt>__builtin_apply</tt> family of builtins. However, some extensions
|
|
|
|
|
are only supported on some targets. For example, trampolines are only
|
2008-06-08 22:18:35 +02:00
|
|
|
supported on some targets (these are used when you take the address of a
|
|
|
|
|
nested function).</p>
|
2007-09-26 17:59:54 +02:00
|
|
|
|
2008-06-05 08:35:40 +02:00
|
|
|
<p>If you run into GCC extensions which are not supported, please let us know.
|
|
|
|
|
</p>
|
2003-11-22 01:38:41 +01:00
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
2008-10-30 04:58:13 +01:00
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
|
|
|
|
<a name="fortran-fe">Known problems with the llvm-gcc Fortran front-end</a>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
2008-11-04 22:50:59 +01:00
|
|
|
<ul>
|
2008-10-30 04:58:13 +01:00
|
|
|
<li>Fortran support generally works, but there are still several unresolved bugs
|
2009-10-13 19:48:04 +02:00
|
|
|
in <a href="http://llvm.org/bugs/">Bugzilla</a>. Please see the
|
|
|
|
|
tools/gfortran component for details.</li>
|
2008-11-04 22:50:59 +01:00
|
|
|
</ul>
|
2008-10-30 04:58:13 +01:00
|
|
|
</div>
|
2006-04-18 08:18:36 +02:00
|
|
|
|
2008-02-12 07:29:45 +01:00
|
|
|
<!-- ======================================================================= -->
|
|
|
|
|
<div class="doc_subsection">
|
2008-06-05 08:35:40 +02:00
|
|
|
<a name="ada-fe">Known problems with the llvm-gcc Ada front-end</a>
|
2008-02-12 07:29:45 +01:00
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="doc_text">
|
2009-03-02 16:28:15 +01:00
|
|
|
The llvm-gcc 4.2 Ada compiler works fairly well; however, this is not a mature
|
|
|
|
|
technology, and problems should be expected.
|
2008-02-12 07:29:45 +01:00
|
|
|
<ul>
|
2008-06-08 22:18:35 +02:00
|
|
|
<li>The Ada front-end currently only builds on X86-32. This is mainly due
|
2009-03-02 16:28:15 +01:00
|
|
|
to lack of trampoline support (pointers to nested functions) on other platforms.
|
|
|
|
|
However, it <a href="http://llvm.org/PR2006">also fails to build on X86-64</a>
|
2008-02-12 07:29:45 +01:00
|
|
|
which does support trampolines.</li>
|
|
|
|
|
<li>The Ada front-end <a href="http://llvm.org/PR2007">fails to bootstrap</a>.
|
2009-02-25 12:59:06 +01:00
|
|
|
This is due to lack of LLVM support for <tt>setjmp</tt>/<tt>longjmp</tt> style
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exception handling, which is used internally by the compiler.
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2009-10-13 19:48:04 +02:00
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Workaround: configure with <tt>--disable-bootstrap</tt>.</li>
|
2008-10-13 19:27:23 +02:00
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<li>The c380004, <a href="http://llvm.org/PR2010">c393010</a>
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and <a href="http://llvm.org/PR2421">cxg2021</a> ACATS tests fail
|
2009-02-25 12:59:06 +01:00
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(c380004 also fails with gcc-4.2 mainline).
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If the compiler is built with checks disabled then <a href="http://llvm.org/PR2010">c393010</a>
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causes the compiler to go into an infinite loop, using up all system memory.</li>
|
2009-03-02 17:35:57 +01:00
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<li>Some GCC specific Ada tests continue to crash the compiler.</li>
|
2009-10-13 19:48:04 +02:00
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<li>The <tt>-E</tt> binder option (exception backtraces)
|
2008-02-12 07:29:45 +01:00
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<a href="http://llvm.org/PR1982">does not work</a> and will result in programs
|
2009-10-13 19:48:04 +02:00
|
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|
crashing if an exception is raised. Workaround: do not use <tt>-E</tt>.</li>
|
2008-02-12 07:29:45 +01:00
|
|
|
<li>Only discrete types <a href="http://llvm.org/PR1981">are allowed to start
|
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|
or finish at a non-byte offset</a> in a record. Workaround: do not pack records
|
|
|
|
|
or use representation clauses that result in a field of a non-discrete type
|
|
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starting or finishing in the middle of a byte.</li>
|
2008-06-08 23:19:07 +02:00
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|
|
<li>The <tt>lli</tt> interpreter <a href="http://llvm.org/PR2009">considers
|
|
|
|
|
'main' as generated by the Ada binder to be invalid</a>.
|
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Workaround: hand edit the file to use pointers for <tt>argv</tt> and
|
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|
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<tt>envp</tt> rather than integers.</li>
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|
|
<li>The <tt>-fstack-check</tt> option <a href="http://llvm.org/PR2008">is
|
|
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|
|
ignored</a>.</li>
|
2008-02-12 07:29:45 +01:00
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|
</ul>
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</div>
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2003-10-02 06:57:28 +02:00
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<!-- *********************************************************************** -->
|
2003-11-22 01:38:41 +01:00
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<div class="doc_section">
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<a name="additionalinfo">Additional Information</a>
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</div>
|
2003-10-02 06:57:28 +02:00
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<!-- *********************************************************************** -->
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2003-11-22 01:38:41 +01:00
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<div class="doc_text">
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|
2005-05-16 19:13:10 +02:00
|
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<p>A wide variety of additional information is available on the <a
|
2007-05-18 02:44:29 +02:00
|
|
|
href="http://llvm.org">LLVM web page</a>, in particular in the <a
|
|
|
|
|
href="http://llvm.org/docs/">documentation</a> section. The web page also
|
2007-07-09 10:04:31 +02:00
|
|
|
contains versions of the API documentation which is up-to-date with the
|
|
|
|
|
Subversion version of the source code.
|
2005-03-30 21:14:24 +02:00
|
|
|
You can access versions of these documents specific to this release by going
|
|
|
|
|
into the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2003-11-22 01:38:41 +01:00
|
|
|
<p>If you have any questions or comments about LLVM, please feel free to contact
|
2005-10-29 09:07:09 +02:00
|
|
|
us via the <a href="http://llvm.org/docs/#maillist"> mailing
|
2003-12-12 22:22:16 +01:00
|
|
|
lists</a>.</p>
|
2003-10-02 06:57:28 +02:00
|
|
|
|
2003-11-22 01:38:41 +01:00
|
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</div>
|
2003-10-02 06:57:28 +02:00
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<!-- *********************************************************************** -->
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|
2003-11-22 01:38:41 +01:00
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<hr>
|
2003-11-22 02:23:39 +01:00
|
|
|
<address>
|
2003-12-21 23:53:21 +01:00
|
|
|
<a href="http://jigsaw.w3.org/css-validator/check/referer"><img
|
2008-12-11 18:34:48 +01:00
|
|
|
src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS"></a>
|
2003-11-22 02:23:39 +01:00
|
|
|
<a href="http://validator.w3.org/check/referer"><img
|
2008-12-11 18:34:48 +01:00
|
|
|
src="http://www.w3.org/Icons/valid-html401-blue" alt="Valid HTML 4.01"></a>
|
2003-11-22 02:23:39 +01:00
|
|
|
|
2007-05-18 02:44:29 +02:00
|
|
|
<a href="http://llvm.org/">LLVM Compiler Infrastructure</a><br>
|
2003-11-22 01:38:41 +01:00
|
|
|
Last modified: $Date$
|
2003-11-22 02:23:39 +01:00
|
|
|
</address>
|
2003-10-02 06:57:28 +02:00
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2003-11-22 01:38:41 +01:00
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</body>
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</html>
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