Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / 195cd3a58d17f1c98352c6d944549b6c3a50aa1b / . / docs / ReleaseNotes.html
blob: 2453f6c3dffb7165a7fd2bd3c694b066cdb60c99 [file] [log] [blame]
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
2 "http://www.w3.org/TR/html4/strict.dtd">
3<html>
4<head>
Reid Spencer6454ed32004-11-18 18:38:58 +0000[diff] [blame]5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]6 <link rel="stylesheet" href="llvm.css" type="text/css">
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]7 <title>LLVM 2.4 Release Notes</title>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]8</head>
9<body>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]10
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]11<div class="doc_title">LLVM 2.4 Release Notes</div>
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]12
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]13<ol>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]14 <li><a href="#intro">Introduction</a></li>
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]15 <li><a href="#subproj">Sub-project Status Update</a></li>
16 <li><a href="#whatsnew">What's New in LLVM?</a></li>
Chris Lattner4b538b92004-04-30 22:17:12 +0000[diff] [blame]17 <li><a href="GettingStarted.html">Installation Instructions</a></li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]18 <li><a href="#portability">Portability and Supported Platforms</a></li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]19 <li><a href="#knownproblems">Known Problems</a>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]20 <li><a href="#additionalinfo">Additional Information</a></li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]21</ol>
22
Chris Lattner7911ce22004-05-23 21:07:27 +0000[diff] [blame]23<div class="doc_author">
Chris Lattnerc463b272005-10-29 07:07:09 +0000[diff] [blame]24 <p>Written by the <a href="http://llvm.org">LLVM Team</a><p>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]25</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]26
27<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]28<div class="doc_section">
29 <a name="intro">Introduction</a>
30</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]31<!-- *********************************************************************** -->
32
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]33<div class="doc_text">
34
Chris Lattnerf6662f92008-10-13 17:57:36 +0000[diff] [blame]35<p>This document contains the release notes for the LLVM Compiler
36Infrastructure, release 2.4. Here we describe the status of LLVM, including
37major improvements from the previous release and significant known problems.
38All LLVM releases may be downloaded from the <a
39href="http://llvm.org/releases/">LLVM releases web site</a>.</p>
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]40
Chris Lattner7506b1d2004-12-07 08:04:13 +0000[diff] [blame]41<p>For more information about LLVM, including information about the latest
Chris Lattnerc463b272005-10-29 07:07:09 +0000[diff] [blame]42release, please check out the <a href="http://llvm.org/">main LLVM
Chris Lattner47ad72c2003-10-07 21:38:31 +0000[diff] [blame]43web site</a>. If you have questions or comments, the <a
Chris Lattnerf6662f92008-10-13 17:57:36 +0000[diff] [blame]44href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM Developer's Mailing
45List</a> is a good place to send them.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]46
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]47<p>Note that if you are reading this file from a Subversion checkout or the
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]48main LLVM web page, this document applies to the <i>next</i> release, not the
49current one. To see the release notes for a specific releases, please see the
50<a href="http://llvm.org/releases/">releases page</a>.</p>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]51
52</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]53
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]54<!-- Unfinished features in 2.4:
Chris Lattneracce85d2008-02-10 07:46:44 +0000[diff] [blame]55 Machine LICM
56 Machine Sinking
57 LegalizeDAGTypes
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]58 llc -enable-value-prop, propagation of value info (sign/zero ext info) from
59 one MBB to another
Chris Lattneracce85d2008-02-10 07:46:44 +0000[diff] [blame]60 -->
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]61
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]62 <!-- for announcement email:
63 mention dev mtg
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]64 Xcode 3.1 and 3.1.1.
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]65 -->
Chris Lattneracce85d2008-02-10 07:46:44 +0000[diff] [blame]66
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]67<!-- *********************************************************************** -->
68<div class="doc_section">
69 <a name="subproj">Sub-project Status Update</a>
Chris Lattnerea34f642008-06-08 21:34:41 +0000[diff] [blame]70</div>
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]71<!-- *********************************************************************** -->
Chris Lattnerea34f642008-06-08 21:34:41 +0000[diff] [blame]72
73<div class="doc_text">
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]74<p>
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]75The LLVM 2.4 distribution currently consists of code from the core LLVM
Chris Lattnerfb97b2d2008-10-13 18:11:54 +0000[diff] [blame]76repository (which roughly includes the LLVM optimizers, code generators and
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]77supporting tools) and the llvm-gcc repository. In addition to this code, the
78LLVM Project includes other sub-projects that are in development. The two which
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]79are the most actively developed are the <a href="#clang">Clang Project</a> and
Duncan Sandsbf8c4f22008-10-13 18:33:28 +0000[diff] [blame]80the <a href="#vmkit">vmkit Project</a>.
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]81</p>
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]82
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]83</div>
84
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]85
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]86<!--=========================================================================-->
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]87<div class="doc_subsection">
Chris Lattnerfb97b2d2008-10-13 18:11:54 +0000[diff] [blame]88<a name="clang">Clang: C/C++/Objective-C Frontend Toolkit</a>
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]89</div>
90
91<div class="doc_text">
92
93<p>The <a href="http://clang.llvm.org/">Clang project</a> is an effort to build
94a set of new 'LLVM native' front-end technologies for the LLVM optimizer
95and code generator. Clang is continuing to make major strides forward in all
96areas. Its C and Objective-C parsing support is very solid, and the code
97generation support is far enough along to build many C applications. While not
98yet production quality, it is progressing very nicely. In addition, C++
99front-end work has started to make significant progress.</p>
100
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]101<p>Codegen progress/state
102</p>
103
Chris Lattnerfb97b2d2008-10-13 18:11:54 +0000[diff] [blame]104</div>
105
106<!--=========================================================================-->
107<div class="doc_subsection">
108<a name="clangsa">Clang Static Analyzer</a>
109</div>
110
111<div class="doc_text">
112
113<p>The
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]114<a href="http://clang.llvm.org/StaticAnalysis.html">static analysis tool</a>
Chris Lattnerfb97b2d2008-10-13 18:11:54 +0000[diff] [blame]115.</p>
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]116
117</div>
118
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]119<!--=========================================================================-->
120<div class="doc_subsection">
Chris Lattnerfb97b2d2008-10-13 18:11:54 +0000[diff] [blame]121<a name="vmkit">vmkit: JVM/CLI Virtual Machine Implementation</a>
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]122</div>
123
124<div class="doc_text">
125<p>
Chris Lattnerfb97b2d2008-10-13 18:11:54 +0000[diff] [blame]126The <a href="http://vmkit.llvm.org/">vmkit project</a> is an implementation of
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]127a JVM and a CLI Virtual Machines (Microsoft .NET is an
128implementation of the CLI) using the Just-In-Time compiler of LLVM.</p>
129
130<p>...</p>
131
132</div>
133
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]134
135<!-- *********************************************************************** -->
136<div class="doc_section">
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]137 <a name="whatsnew">What's New in LLVM?</a>
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]138</div>
139<!-- *********************************************************************** -->
140
Chris Lattnerf8e0b4e2008-06-08 22:59:35 +0000[diff] [blame]141<div class="doc_text">
142
Chris Lattnerf6662f92008-10-13 17:57:36 +0000[diff] [blame]143<p>This release includes a huge number of bug fixes, performance tweaks and
144minor improvements. Some of the major improvements and new features are listed
145in this section.
Chris Lattnerf8e0b4e2008-06-08 22:59:35 +0000[diff] [blame]146</p>
147</div>
148
Chris Lattner8348b472008-06-08 21:58:17 +0000[diff] [blame]149<!--=========================================================================-->
Chris Lattnerea34f642008-06-08 21:34:41 +0000[diff] [blame]150<div class="doc_subsection">
Chris Lattner252b83d2008-02-06 18:00:06 +0000[diff] [blame]151<a name="majorfeatures">Major New Features</a>
152</div>
153
154<div class="doc_text">
155
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]156<p>LLVM 2.4 includes several major new capabilities:</p>
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]157
158<ul>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]159<li>
Chris Lattnercce6d4b2008-10-12 18:30:33 +0000[diff] [blame]160 <p>MRVs got generalized to FCAs. getresult is gone, ret with multiple values
161 is gone.</p>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]162 </li>
163
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]164<li><p>-O0 compile times overall much faster</p></li>
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]165
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]166<li><p>Attrs changes?</p></li>
Chris Lattnerbc5786b2008-06-05 06:57:39 +0000[diff] [blame]167
Chris Lattnercce6d4b2008-10-12 18:30:33 +0000[diff] [blame]168
169<li><p>Initial PIC16 port</p></li>
170
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]171<li><p> Support the rest of the atomic __sync builtins</p></li>
Chris Lattnercce6d4b2008-10-12 18:30:33 +0000[diff] [blame]172
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]173<li><p>...</p></li>
Chris Lattnerbc5786b2008-06-05 06:57:39 +0000[diff] [blame]174
Chris Lattner8170c102008-02-10 08:18:42 +0000[diff] [blame]175</ul>
176
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]177</div>
178
Chris Lattner791f77b2008-06-05 06:25:56 +0000[diff] [blame]179
180<!--=========================================================================-->
181<div class="doc_subsection">
Chris Lattnerea34f642008-06-08 21:34:41 +0000[diff] [blame]182<a name="llvm-gcc">llvm-gcc 4.2 Improvements</a>
Chris Lattner791f77b2008-06-05 06:25:56 +0000[diff] [blame]183</div>
184
185<div class="doc_text">
186
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]187<p>LLVM 2.4 fully supports the llvm-gcc 4.2 front-end, and includes support
Chris Lattnerf8e0b4e2008-06-08 22:59:35 +0000[diff] [blame]188for the C, C++, Objective-C, Ada, and Fortran front-ends.</p>
Chris Lattner791f77b2008-06-05 06:25:56 +0000[diff] [blame]189
Chris Lattnerf8e0b4e2008-06-08 22:59:35 +0000[diff] [blame]190<p>
191<ul>
Duncan Sandsbf8c4f22008-10-13 18:33:28 +0000[diff] [blame]192<li>block-pointers<li>
193<li>alpha?<li>
194<li>-flimited-precision</li>
195<li>-flto</li>
Chris Lattnerf8e0b4e2008-06-08 22:59:35 +0000[diff] [blame]196
Gabor Greifa3bd11d2008-06-09 06:06:18 +0000[diff] [blame]197</ul>
Chris Lattner791f77b2008-06-05 06:25:56 +0000[diff] [blame]198
Chris Lattner791f77b2008-06-05 06:25:56 +0000[diff] [blame]199</div>
200
201
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]202<!--=========================================================================-->
203<div class="doc_subsection">
Chris Lattnerf304ffc2008-02-10 08:17:19 +0000[diff] [blame]204<a name="coreimprovements">LLVM Core Improvements</a>
205</div>
206
207<div class="doc_text">
208<p>New features include:
209</p>
210
Chris Lattner791f77b2008-06-05 06:25:56 +0000[diff] [blame]211<ul>
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]212<li>vector shifts in the IR: no codegen support yet</li>
Chris Lattnercce6d4b2008-10-12 18:30:33 +0000[diff] [blame]213<li>use diet patch landed: saved 15% IR memory footprint</li>
214<li>LLVM IR now directly represents "common" linkage, instead of
215 representing it as a form of weak linkage.</li>
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]216<li>DebugInfoBuilder</li>
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]217<li>.ll printing format change: %3 = add i32 4, 2</li>
Duncan Sandsbf8c4f22008-10-13 18:33:28 +0000[diff] [blame]218<li>opt-size, noinline, alwaysinline function attributes</li>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]219<li>...</li>
Chris Lattnerf304ffc2008-02-10 08:17:19 +0000[diff] [blame]220</ul>
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]221
Chris Lattnerf304ffc2008-02-10 08:17:19 +0000[diff] [blame]222</div>
223
224<!--=========================================================================-->
225<div class="doc_subsection">
Chris Lattneracce85d2008-02-10 07:46:44 +0000[diff] [blame]226<a name="optimizer">Optimizer Improvements</a>
227</div>
228
229<div class="doc_text">
230
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]231<p>In addition to a huge array of bug fixes and minor performance tweaks, the
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]232LLVM 2.4 optimizers support a few major enhancements:</p>
Chris Lattneracce85d2008-02-10 07:46:44 +0000[diff] [blame]233
234<ul>
235
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]236<li>GVN now does local PRE?</li>
237
238<li>Matthijs' Dead argument elimination rewrite</li>
239
Chris Lattnercce6d4b2008-10-12 18:30:33 +0000[diff] [blame]240<li>Old-ADCE used control dependence and deleted output-free infinite loops.
241Added a new Loop deletion pass (for deleting output free provably-finite loops)
242and rewrote ADCE to be simpler faster, and not need control dependence.</li>
243
244<li>SparsePropagation framework for lattice-based dataflow solvers.</li>
245
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]246<li>Tail duplication was removed from the standard optimizer sequence.</li>
Chris Lattnercce6d4b2008-10-12 18:30:33 +0000[diff] [blame]247
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]248<li>Various helper functions (ComputeMaskedBits, ComputeNumSignBits, etc) were
249pulled out of instcombine and put into a new ValueTracking.h file, where they
250can be reused by other passes.</li>
251
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]252<li>MarkModRef etc</li>
Chris Lattner0b832202008-06-08 02:45:07 +0000[diff] [blame]253</ul>
254
255</div>
256
257<!--=========================================================================-->
258<div class="doc_subsection">
259<a name="codegen">Code Generator Improvements</a>
260</div>
261
262<div class="doc_text">
263
264<p>We put a significant amount of work into the code generator infrastructure,
265which allows us to implement more aggressive algorithms and make it run
266faster:</p>
267
268<ul>
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]269<li>asm writers split out to their own library to avoid JITs having to link
270 them in.</li>
271<li>Big asm writer refactoring + TargetAsmInfo</li>
272<li>2-addr pass and coalescer can now remat trivial insts to avoid a copy.</li>
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]273<li>spiller to commute instructions in order to fold a reload</li>
274<li>Stack slot coloring?</li>
275<li>Live intervals renumbering? Is this useful to external people?</li>
276<li>'is as cheap as a move' instruction flag</li>
277<li>Improvements to selection dag viewing</li>
278<li>fast isel</li>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]279<li>Selection dag speedups</li>
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]280<li>asmwriter + raw_ostream -> fastah</li>
Chris Lattner59b5ce42008-10-13 17:12:51 +0000[diff] [blame]281<li>Partitioned Boolean Quadratic Programming (PBQP) based register
282allocator.</li>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]283<li>...</li>
Chris Lattner0b832202008-06-08 02:45:07 +0000[diff] [blame]284
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]285</ul>
286
287</div>
288
289
290<!--=========================================================================-->
291<div class="doc_subsection">
Chris Lattner77d29b12008-06-05 08:02:49 +0000[diff] [blame]292<a name="x86specific">X86/X86-64 Specific Improvements</a>
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]293</div>
Chris Lattner60893e52007-05-18 06:33:02 +0000[diff] [blame]294
Chris Lattner738bd302006-04-18 06:32:08 +0000[diff] [blame]295<div class="doc_text">
Chris Lattnerf304ffc2008-02-10 08:17:19 +0000[diff] [blame]296<p>New target-specific features include:
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]297</p>
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]298
299<ul>
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]300<li>Exception handling is supported by default on Linux/x86-64.</li>
Duncan Sandsbbf379a2008-10-13 17:32:15 +0000[diff] [blame]301<li>Position Independent Code (PIC) is now supported on Linux/x86-64.</li>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]302<li>...</li>
Chris Lattnere6e1b352008-06-08 21:19:07 +0000[diff] [blame]303
Chris Lattnerbfb17ab2007-05-17 21:41:31 +0000[diff] [blame]304</ul>
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]305
Chris Lattnerbfb17ab2007-05-17 21:41:31 +0000[diff] [blame]306</div>
Chris Lattnerc5d658a2006-03-03 00:34:26 +0000[diff] [blame]307
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]308<!--=========================================================================-->
309<div class="doc_subsection">
Chris Lattner77d29b12008-06-05 08:02:49 +0000[diff] [blame]310<a name="targetspecific">Other Target Specific Improvements</a>
311</div>
312
313<div class="doc_text">
314<p>New target-specific features include:
315</p>
316
317<ul>
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]318<li>MIPS floating point support?</li>
Duncan Sandsbbf379a2008-10-13 17:32:15 +0000[diff] [blame]319<li>PowerPC now supports trampolines.</li>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]320<li>....</li>
Chris Lattner77d29b12008-06-05 08:02:49 +0000[diff] [blame]321</ul>
Chris Lattner77d29b12008-06-05 08:02:49 +0000[diff] [blame]322
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]323</div>
Chris Lattner77d29b12008-06-05 08:02:49 +0000[diff] [blame]324
325
326<!--=========================================================================-->
327<div class="doc_subsection">
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]328<a name="otherimprovements">Other Improvements</a>
329</div>
330
331<div class="doc_text">
332<p>New features include:
333</p>
334
335<ul>
Mikhail Glushenkov49feb452008-10-13 02:46:01 +0000[diff] [blame]336<li><tt>llvmc2</tt> (the generic compiler driver) gained plugin
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]337 support. It is now easier to experiment with <tt>llvmc2</tt> and
338 build your own tools based on it. </li>
Chris Lattner547a3912008-10-12 19:47:48 +0000[diff] [blame]339<li>raw_ostream + formatting</li>
Chris Lattnercdb0e4c2008-10-12 22:57:58 +0000[diff] [blame]340<li>Recycler + pool allocation stuff?</li>
Chris Lattner857fb132008-10-11 18:18:28 +0000[diff] [blame]341<li>...</li>
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]342</ul>
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]343
Chris Lattner84977642007-09-21 03:54:09 +0000[diff] [blame]344</div>
Chris Lattnerc5d658a2006-03-03 00:34:26 +0000[diff] [blame]345
Chris Lattnerf6662f92008-10-13 17:57:36 +0000[diff] [blame]346<!--=========================================================================-->
347<div class="doc_subsection">
348<a name="changes">Major Changes and Removed Features</a>
349</div>
350
351<div class="doc_text">
352
Chris Lattner96a445e2008-10-13 18:01:01 +0000[diff] [blame]353<p>If you're already an LLVM user, this section lists some "gotchas" that you
354may run into upgrading from the previous release.</p>
355
Duncan Sandsbf8c4f22008-10-13 18:33:28 +0000[diff] [blame]356<p>The LLVM IR generated by llvm-gcc no longer names all instructions.
357 Use the instnamer pass if you want everything named.</p>
Chris Lattnerf6662f92008-10-13 17:57:36 +0000[diff] [blame]358
Duncan Sandsbf8c4f22008-10-13 18:33:28 +0000[diff] [blame]359<li>The LoadVN and GCSE passes have been removed.</li>
Chris Lattnerf6662f92008-10-13 17:57:36 +0000[diff] [blame]360
361
362<p>LLVM API Changes:</p>
363
364<ul>
365
366<li>... Attributes changes ... </li>
367
368<li>The <tt>DbgStopPointInst</tt> methods <tt>getDirectory</tt> and
369<tt>getFileName</tt> now return <tt>Value*</tt> instead of strings. These can be
370converted to strings using <tt>llvm::GetConstantStringInfo</tt> defined via
371"llvm/Analysis/ValueTracking.h".</li>
372
373<li>API change: BinaryOperator::create -> Create (CmpInst, CastInst too)</li>
374<li>Various header files like "llvm/ADT/iterator" were given a .h suffix.
375 Change your code to #include "llvm/ADT/iterator.h" instead.</li>
376
377</ul>
378
379</div>
380
381
382
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]383<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]384<div class="doc_section">
385 <a name="portability">Portability and Supported Platforms</a>
386</div>
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]387<!-- *********************************************************************** -->
388
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]389<div class="doc_text">
390
John Criswell0b5b5e92004-12-08 20:35:47 +0000[diff] [blame]391<p>LLVM is known to work on the following platforms:</p>
Chris Lattner4654bdb2004-06-01 18:22:41 +0000[diff] [blame]392
393<ul>
Mikhail Glushenkovea65d7d2008-10-13 02:08:34 +0000[diff] [blame]394<li>Intel and AMD machines (IA32) running Red Hat Linux, Fedora Core and FreeBSD
Reid Spencer00812e22005-05-17 02:47:27 +0000[diff] [blame]395 (and probably other unix-like systems).</li>
Chris Lattner000c73b2008-02-06 06:30:34 +0000[diff] [blame]396<li>PowerPC and X86-based Mac OS X systems, running 10.3 and above in 32-bit and
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]397 64-bit modes.</li>
Chris Lattner252b83d2008-02-06 18:00:06 +0000[diff] [blame]398<li>Intel and AMD machines running on Win32 using MinGW libraries (native).</li>
Chris Lattner57a460e2007-05-23 04:39:32 +0000[diff] [blame]399<li>Intel and AMD machines running on Win32 with the Cygwin libraries (limited
400 support is available for native builds with Visual C++).</li>
Gabor Greif96a89c72008-06-05 18:39:01 +0000[diff] [blame]401<li>Sun UltraSPARC workstations running Solaris 10.</li>
John Criswell9321fa82005-05-13 20:28:15 +0000[diff] [blame]402<li>Alpha-based machines running Debian GNU/Linux.</li>
Gabor Greif96a89c72008-06-05 18:39:01 +0000[diff] [blame]403<li>Itanium-based (IA64) machines running Linux and HP-UX.</li>
Chris Lattner4654bdb2004-06-01 18:22:41 +0000[diff] [blame]404</ul>
405
Chris Lattnerbc5786b2008-06-05 06:57:39 +0000[diff] [blame]406<p>The core LLVM infrastructure uses GNU autoconf to adapt itself
Brian Gaekeb0fd7612004-05-09 05:28:35 +0000[diff] [blame]407to the machine and operating system on which it is built. However, minor
408porting may be required to get LLVM to work on new platforms. We welcome your
409portability patches and reports of successful builds or error messages.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]410
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]411</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]412
413<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]414<div class="doc_section">
415 <a name="knownproblems">Known Problems</a>
416</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]417<!-- *********************************************************************** -->
418
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]419<div class="doc_text">
420
421<p>This section contains all known problems with the LLVM system, listed by
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]422component. As new problems are discovered, they will be added to these
Chris Lattner5eccca42003-12-12 21:22:16 +0000[diff] [blame]423sections. If you run into a problem, please check the <a
Chris Lattnerc463b272005-10-29 07:07:09 +0000[diff] [blame]424href="http://llvm.org/bugs/">LLVM bug database</a> and submit a bug if
Chris Lattner5eccca42003-12-12 21:22:16 +0000[diff] [blame]425there isn't already one.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]426
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]427</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]428
Chris Lattnerf5ee1702004-03-14 02:03:02 +0000[diff] [blame]429<!-- ======================================================================= -->
430<div class="doc_subsection">
431 <a name="experimental">Experimental features included with this release</a>
432</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]433
Chris Lattnerf5ee1702004-03-14 02:03:02 +0000[diff] [blame]434<div class="doc_text">
435
Misha Brukman6df9e2c2004-05-12 21:46:05 +0000[diff] [blame]436<p>The following components of this LLVM release are either untested, known to
437be broken or unreliable, or are in early development. These components should
438not be relied on, and bugs should not be filed against them, but they may be
439useful to some people. In particular, if you would like to work on one of these
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]440components, please contact us on the <a
441href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVMdev list</a>.</p>
Chris Lattnerf5ee1702004-03-14 02:03:02 +0000[diff] [blame]442
443<ul>
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]444<li>The MSIL, IA64, Alpha, SPU, and MIPS backends are experimental.</li>
Duncan Sands27aff872008-06-08 20:18:35 +0000[diff] [blame]445<li>The llc "<tt>-filetype=asm</tt>" (the default) is the only supported
Chris Lattner000c73b2008-02-06 06:30:34 +0000[diff] [blame]446 value for this option.</li>
Chris Lattnerf5ee1702004-03-14 02:03:02 +0000[diff] [blame]447</ul>
448
449</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]450
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]451<!-- ======================================================================= -->
452<div class="doc_subsection">
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]453 <a name="x86-be">Known problems with the X86 back-end</a>
John Criswellc0c186d2005-11-08 21:11:33 +0000[diff] [blame]454</div>
455
456<div class="doc_text">
457
458<ul>
Anton Korobeynikova6094be2008-06-08 10:24:13 +0000[diff] [blame]459 <li>The X86 backend does not yet support
460 all <a href="http://llvm.org/PR879">inline assembly that uses the X86
461 floating point stack</a>. It supports the 'f' and 't' constraints, but not
462 'u'.</li>
Chris Lattnere6e1b352008-06-08 21:19:07 +0000[diff] [blame]463 <li>The X86 backend generates inefficient floating point code when configured
464 to generate code for systems that don't have SSE2.</li>
Duncan Sands47eff2b2008-06-08 19:38:43 +0000[diff] [blame]465 <li>Win64 code generation wasn't widely tested. Everything should work, but we
Anton Korobeynikova6094be2008-06-08 10:24:13 +0000[diff] [blame]466 expect small issues to happen. Also, llvm-gcc cannot build mingw64 runtime
467 currently due
468 to <a href="http://llvm.org/PR2255">several</a>
Chris Lattner04af7cb2008-06-08 23:12:47 +0000[diff] [blame]469 <a href="http://llvm.org/PR2257">bugs</a> due to lack of support for the
470 'u' inline assembly constraint and X87 floating point inline assembly.</li>
Dan Gohman8207ba92008-06-08 23:05:11 +0000[diff] [blame]471 <li>The X86-64 backend does not yet support the LLVM IR instruction
472 <tt>va_arg</tt>. Currently, the llvm-gcc front-end supports variadic
473 argument constructs on X86-64 by lowering them manually.</li>
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]474</ul>
475
476</div>
477
478<!-- ======================================================================= -->
479<div class="doc_subsection">
480 <a name="ppc-be">Known problems with the PowerPC back-end</a>
481</div>
482
483<div class="doc_text">
484
485<ul>
Nicolas Geoffraye4285dc2007-05-15 09:21:28 +0000[diff] [blame]486<li>The Linux PPC32/ABI support needs testing for the interpreter and static
Chris Lattner57a460e2007-05-23 04:39:32 +0000[diff] [blame]487compilation, and lacks support for debug information.</li>
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]488</ul>
489
490</div>
491
492<!-- ======================================================================= -->
493<div class="doc_subsection">
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]494 <a name="arm-be">Known problems with the ARM back-end</a>
495</div>
496
497<div class="doc_text">
498
499<ul>
Chris Lattner57a460e2007-05-23 04:39:32 +0000[diff] [blame]500<li>Thumb mode works only on ARMv6 or higher processors. On sub-ARMv6
Duncan Sandsc90d68b2007-09-26 15:59:54 +0000[diff] [blame]501processors, thumb programs can crash or produce wrong
Chris Lattner57a460e2007-05-23 04:39:32 +0000[diff] [blame]502results (<a href="http://llvm.org/PR1388">PR1388</a>).</li>
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]503<li>Compilation for ARM Linux OABI (old ABI) is supported, but not fully tested.
504</li>
Chris Lattnere6e1b352008-06-08 21:19:07 +0000[diff] [blame]505<li>There is a bug in QEMU-ARM (&lt;= 0.9.0) which causes it to incorrectly
506 execute
Chris Lattner57a460e2007-05-23 04:39:32 +0000[diff] [blame]507programs compiled with LLVM. Please use more recent versions of QEMU.</li>
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]508</ul>
509
510</div>
511
512<!-- ======================================================================= -->
513<div class="doc_subsection">
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]514 <a name="sparc-be">Known problems with the SPARC back-end</a>
515</div>
516
517<div class="doc_text">
518
519<ul>
520<li>The SPARC backend only supports the 32-bit SPARC ABI (-m32), it does not
521 support the 64-bit SPARC ABI (-m64).</li>
522</ul>
523
524</div>
525
526<!-- ======================================================================= -->
527<div class="doc_subsection">
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]528 <a name="alpha-be">Known problems with the Alpha back-end</a>
529</div>
530
531<div class="doc_text">
532
533<ul>
534
535<li>On 21164s, some rare FP arithmetic sequences which may trap do not have the
536appropriate nops inserted to ensure restartability.</li>
537
John Criswellc0c186d2005-11-08 21:11:33 +0000[diff] [blame]538</ul>
539</div>
540
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]541<!-- ======================================================================= -->
542<div class="doc_subsection">
543 <a name="ia64-be">Known problems with the IA64 back-end</a>
544</div>
545
546<div class="doc_text">
547
548<ul>
Chris Lattner04af7cb2008-06-08 23:12:47 +0000[diff] [blame]549<li>The Itanium backend is highly experimental, and has a number of known
550 issues. We are looking for a maintainer for the Itanium backend. If you
551 are interested, please contact the llvmdev mailing list.</li>
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]552</ul>
553
554</div>
555
556<!-- ======================================================================= -->
557<div class="doc_subsection">
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]558 <a name="c-be">Known problems with the C back-end</a>
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]559</div>
560
561<div class="doc_text">
562
563<ul>
Chris Lattner5733b272008-06-05 06:35:40 +0000[diff] [blame]564<li><a href="http://llvm.org/PR802">The C backend has only basic support for
565 inline assembly code</a>.</li>
Chris Lattner725a0d82007-09-26 06:01:35 +0000[diff] [blame]566<li><a href="http://llvm.org/PR1658">The C backend violates the ABI of common
567 C++ programs</a>, preventing intermixing between C++ compiled by the CBE and
Duncan Sands27aff872008-06-08 20:18:35 +0000[diff] [blame]568 C++ code compiled with llc or native compilers.</li>
Duncan Sandsf74c0cc2008-02-10 13:40:55 +0000[diff] [blame]569<li>The C backend does not support all exception handling constructs.</li>
Chris Lattner26299222006-11-18 07:51:14 +0000[diff] [blame]570</ul>
571
572</div>
John Criswellc0c186d2005-11-08 21:11:33 +0000[diff] [blame]573
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]574
575<!-- ======================================================================= -->
576<div class="doc_subsection">
Chris Lattner5733b272008-06-05 06:35:40 +0000[diff] [blame]577 <a name="c-fe">Known problems with the llvm-gcc C front-end</a>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]578</div>
Chris Lattner47588f92003-10-02 05:07:23 +0000[diff] [blame]579
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]580<div class="doc_text">
Chris Lattnerc5d658a2006-03-03 00:34:26 +0000[diff] [blame]581
Chris Lattner252b83d2008-02-06 18:00:06 +0000[diff] [blame]582<p>llvm-gcc does not currently support <a href="http://llvm.org/PR869">Link-Time
583Optimization</a> on most platforms "out-of-the-box". Please inquire on the
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]584llvmdev mailing list if you are interested.</p>
Chris Lattnerd9ea0172006-08-08 17:27:28 +0000[diff] [blame]585
Chris Lattner5733b272008-06-05 06:35:40 +0000[diff] [blame]586<p>The only major language feature of GCC not supported by llvm-gcc is
587 the <tt>__builtin_apply</tt> family of builtins. However, some extensions
588 are only supported on some targets. For example, trampolines are only
Duncan Sands27aff872008-06-08 20:18:35 +0000[diff] [blame]589 supported on some targets (these are used when you take the address of a
590 nested function).</p>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]591
Chris Lattner5733b272008-06-05 06:35:40 +0000[diff] [blame]592<p>If you run into GCC extensions which are not supported, please let us know.
593</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]594
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]595</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]596
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]597<!-- ======================================================================= -->
598<div class="doc_subsection">
Chris Lattner5733b272008-06-05 06:35:40 +0000[diff] [blame]599 <a name="c++-fe">Known problems with the llvm-gcc C++ front-end</a>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]600</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]601
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]602<div class="doc_text">
603
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]604<p>The C++ front-end is considered to be fully
Chris Lattner7506b1d2004-12-07 08:04:13 +0000[diff] [blame]605tested and works for a number of non-trivial programs, including LLVM
Chris Lattnerf3e5bc62007-05-14 06:56:09 +0000[diff] [blame]606itself, Qt, Mozilla, etc.</p>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]607
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]608<ul>
Anton Korobeynikov0021fc12008-10-11 18:27:16 +0000[diff] [blame]609<li>Exception handling works well on the X86 and PowerPC targets. Currently
610 only linux and darwin targets are supported (both 32 and 64 bit).</li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]611</ul>
Chris Lattnerfcc54b32003-10-07 22:14:37 +0000[diff] [blame]612
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]613</div>
614
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]615
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]616<!-- ======================================================================= -->
617<div class="doc_subsection">
Chris Lattner5733b272008-06-05 06:35:40 +0000[diff] [blame]618 <a name="ada-fe">Known problems with the llvm-gcc Ada front-end</a>
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]619</div>
620
621<div class="doc_text">
622The llvm-gcc 4.2 Ada compiler works fairly well, however this is not a mature
623technology and problems should be expected.
624<ul>
Duncan Sands27aff872008-06-08 20:18:35 +0000[diff] [blame]625<li>The Ada front-end currently only builds on X86-32. This is mainly due
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]626to lack of trampoline support (pointers to nested functions) on other platforms,
Duncan Sands27aff872008-06-08 20:18:35 +0000[diff] [blame]627however it <a href="http://llvm.org/PR2006">also fails to build on X86-64</a>
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]628which does support trampolines.</li>
629<li>The Ada front-end <a href="http://llvm.org/PR2007">fails to bootstrap</a>.
630Workaround: configure with --disable-bootstrap.</li>
Duncan Sands978bcee2008-10-13 17:27:23 +0000[diff] [blame]631<li>The c380004, <a href="http://llvm.org/PR2010">c393010</a>
632and <a href="http://llvm.org/PR2421">cxg2021</a> ACATS tests fail
633(c380004 also fails with gcc-4.2 mainline).</li>
634<li>Some gcc specific Ada tests continue to crash the compiler.</li>
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]635<li>The -E binder option (exception backtraces)
636<a href="http://llvm.org/PR1982">does not work</a> and will result in programs
637crashing if an exception is raised. Workaround: do not use -E.</li>
638<li>Only discrete types <a href="http://llvm.org/PR1981">are allowed to start
639or finish at a non-byte offset</a> in a record. Workaround: do not pack records
640or use representation clauses that result in a field of a non-discrete type
641starting or finishing in the middle of a byte.</li>
Chris Lattnere6e1b352008-06-08 21:19:07 +0000[diff] [blame]642<li>The <tt>lli</tt> interpreter <a href="http://llvm.org/PR2009">considers
643'main' as generated by the Ada binder to be invalid</a>.
644Workaround: hand edit the file to use pointers for <tt>argv</tt> and
645<tt>envp</tt> rather than integers.</li>
646<li>The <tt>-fstack-check</tt> option <a href="http://llvm.org/PR2008">is
647ignored</a>.</li>
Chris Lattner2b659ef2008-02-12 06:29:45 +0000[diff] [blame]648</ul>
649</div>
650
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]651<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]652<div class="doc_section">
653 <a name="additionalinfo">Additional Information</a>
654</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]655<!-- *********************************************************************** -->
656
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]657<div class="doc_text">
658
Chris Lattner416db102005-05-16 17:13:10 +0000[diff] [blame]659<p>A wide variety of additional information is available on the <a
Chris Lattnerb4b0ce72007-05-18 00:44:29 +0000[diff] [blame]660href="http://llvm.org">LLVM web page</a>, in particular in the <a
661href="http://llvm.org/docs/">documentation</a> section. The web page also
Reid Spencer669ed452007-07-09 08:04:31 +0000[diff] [blame]662contains versions of the API documentation which is up-to-date with the
663Subversion version of the source code.
Misha Brukman109d9e82005-03-30 19:14:24 +0000[diff] [blame]664You can access versions of these documents specific to this release by going
665into the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]666
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]667<p>If you have any questions or comments about LLVM, please feel free to contact
Chris Lattnerc463b272005-10-29 07:07:09 +0000[diff] [blame]668us via the <a href="http://llvm.org/docs/#maillist"> mailing
Chris Lattner5eccca42003-12-12 21:22:16 +0000[diff] [blame]669lists</a>.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]670
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]671</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]672
673<!-- *********************************************************************** -->
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]674
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]675<hr>
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]676<address>
Misha Brukman38847d52003-12-21 22:53:21 +0000[diff] [blame]677 <a href="http://jigsaw.w3.org/css-validator/check/referer"><img
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]678 src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!"></a>
679 <a href="http://validator.w3.org/check/referer"><img
Chris Lattner8170c102008-02-10 08:18:42 +0000[diff] [blame]680 src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!"></a>
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]681
Chris Lattnerb4b0ce72007-05-18 00:44:29 +0000[diff] [blame]682 <a href="http://llvm.org/">LLVM Compiler Infrastructure</a><br>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]683 Last modified: $Date$
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]684</address>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]685
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]686</body>
687</html>