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gerrit-public.fairphone.software / toolchain / llvm-project / df7783516658cef26269c6e936ec59f97984e4a8 / . / llvm / docs / ReleaseNotes.html
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Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]7 <title>LLVM 1.5 Release Notes</title>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]8</head>
9<body>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]10
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]11<div class="doc_title">LLVM 1.5 Release Notes</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]12
13<ol>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]14 <li><a href="#intro">Introduction</a></li>
15 <li><a href="#whatsnew">What's New?</a></li>
Chris Lattner77a51732004-04-30 22:17:12 +0000[diff] [blame]16 <li><a href="GettingStarted.html">Installation Instructions</a></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]17 <li><a href="#portability">Portability and Supported Platforms</a></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]18 <li><a href="#knownproblems">Known Problems</a>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]19 <li><a href="#additionalinfo">Additional Information</a></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]20</ol>
21
Chris Lattner020e1fc2004-05-23 21:07:27 +0000[diff] [blame]22<div class="doc_author">
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]23 <p>Written by the <a href="http://llvm.cs.uiuc.edu">LLVM Team</a><p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]24</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]25
26<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]27<div class="doc_section">
28 <a name="intro">Introduction</a>
29</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]30<!-- *********************************************************************** -->
31
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]32<div class="doc_text">
33
34<p>This document contains the release notes for the LLVM compiler
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]35infrastructure, release 1.5. Here we describe the status of LLVM, including any
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]36known problems and improvements from the previous release. The most up-to-date
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]37version of this document can be found on the <a
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]38href="http://llvm.cs.uiuc.edu/releases/1.5/">LLVM 1.5 web site</a>. If you are
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]39not reading this on the LLVM web pages, you should probably go there because
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]40this document may be updated after the release.</p>
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]41
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]42<p>For more information about LLVM, including information about the latest
43release, please check out the <a href="http://llvm.cs.uiuc.edu">main LLVM
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]44web site</a>. If you have questions or comments, the <a
45href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM developer's mailing
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]46list</a> is a good place to send them.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]47
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]48<p>Note that if you are reading this file from CVS or the main LLVM web page,
49this document applies to the <i>next</i> release, not the current one. To see
50the release notes for the current or previous releases, see the <a
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]51href="http://llvm.cs.uiuc.edu/releases/">releases page</a>.</p>
52
53</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]54
55<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]56<div class="doc_section">
57 <a name="whatsnew">What's New?</a>
58</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]59<!-- *********************************************************************** -->
60
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]61<div class="doc_text">
62
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]63<p>This is the sixth public release of the LLVM compiler infrastructure.</p>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]64
Chris Lattner7c0241c2004-12-10 16:27:34 +0000[diff] [blame]65<p> At this time, LLVM is known to correctly compile a broad range of C and
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]66C++ programs, including the SPEC CPU95 &amp; 2000 suite. TODO. It also includes
67bug fixes for those problems found since the 1.4 release.</p>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]68
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]69</div>
70
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]71<!--=========================================================================-->
72<div class="doc_subsubsection">
Chris Lattner8ebf2532004-02-25 16:36:51 +0000[diff] [blame]73<a name="newfeatures">This release implements the following new features:</a>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]74</div>
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]75
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]76<div class="doc_text">
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]77<ol>
Chris Lattner7bf2e542004-12-11 06:10:52 +0000[diff] [blame]78 <li>LLVM now includes an <a href="http://llvm.cs.uiuc.edu/PR415">
Chris Lattner64d9d2b2005-01-22 18:45:35 +0000[diff] [blame]79 Interprocedural Sparse Conditional Constant Propagation</a> pass, named
Chris Lattner7bf2e542004-12-11 06:10:52 +0000[diff] [blame]80 -ipsccp, which is run by default at link-time.</li>
Chris Lattner592db402003-11-19 22:05:38 +0000[diff] [blame]81</ol>
Chris Lattner4491de62003-11-08 04:28:55 +0000[diff] [blame]82
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]83</div>
84
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]85
86<!--=========================================================================-->
87<div class="doc_subsubsection">
88In this release, the following missing features were implemented:
89</div>
Chris Lattner4491de62003-11-08 04:28:55 +0000[diff] [blame]90
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]91<div class="doc_text">
92
Chris Lattner4491de62003-11-08 04:28:55 +0000[diff] [blame]93<ol>
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]94 <li></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]95</ol>
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]96
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]97</div>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]98
99<!--=========================================================================-->
100<div class="doc_subsubsection">
Misha Brukman017f2f32004-04-19 02:56:49 +0000[diff] [blame]101<a name="qualityofimp">In this release, the following Quality of Implementation
102issues were fixed:</a>
Chris Lattner4df78f02003-12-20 03:42:11 +0000[diff] [blame]103</div>
104
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]105<div class="doc_text">
106
Chris Lattner4df78f02003-12-20 03:42:11 +0000[diff] [blame]107<ol>
Chris Lattner64d9d2b2005-01-22 18:45:35 +0000[diff] [blame]108 <li><a href="http://llvm.cs.uiuc.edu/PR448">Building LLVM in optimized mode
109 should no longer cause GCC to hit swap in the PowerPC backend.</a></li>
Brian Gaeke8b05e4f2004-01-16 21:55:04 +0000[diff] [blame]110</ol>
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]111</div>
Brian Gaeke8b05e4f2004-01-16 21:55:04 +0000[diff] [blame]112
113<!--=========================================================================-->
114<div class="doc_subsubsection">
Chris Lattner2ad48782004-05-02 04:19:15 +0000[diff] [blame]115<a name="codequality">This release includes the following Code Quality
116improvements:</a>
Chris Lattner23257062004-05-23 20:42:08 +0000[diff] [blame]117</div>
Chris Lattner639579c2003-10-27 17:06:39 +0000[diff] [blame]118
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]119<div class="doc_text">
Chris Lattner639579c2003-10-27 17:06:39 +0000[diff] [blame]120<ol>
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]121 <li></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]122</ol>
Reid Spencer3e58f582004-05-23 17:23:13 +0000[diff] [blame]123</div>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]124
125<!--=========================================================================-->
126<div class="doc_subsubsection">
Misha Brukman017f2f32004-04-19 02:56:49 +0000[diff] [blame]127<a name="bugfix">In this release, the following bugs in the previous release
128were fixed:</a>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]129</div>
130
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]131<div class="doc_text">
132
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]133<p>Bugs fixed in the LLVM Core:</p>
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]134
135<ol>
Chris Lattnerc6141112004-12-29 04:03:23 +0000[diff] [blame]136 <li><a href="http://llvm.cs.uiuc.edu/PR490">[cbackend] Logical constant
137 expressions (and/or/xor) not implemented</a></li>
Chris Lattnerb5c253a2004-12-29 04:39:50 +0000[diff] [blame]138 <li><a href="http://llvm.cs.uiuc.edu/PR491">[dse] DSE deletes stores that
139 are partially overwritten by smaller stores</a></li>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]140</ol>
141
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]142<p>Bugs in the C/C++ front-end:</p>
143
144<ol>
Chris Lattnere1329f42005-01-03 04:20:21 +0000[diff] [blame]145 <li><a href="http://llvm.cs.uiuc.edu/PR487">[llvmgcc] llvm-gcc incorrectly
146 rejects some constant initializers involving the addresses of array
147 elements</a></li>
Brian Gaeke730d8d62004-08-24 07:43:48 +0000[diff] [blame]148</ol>
149
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]150</div>
Reid Spencer3e58f582004-05-23 17:23:13 +0000[diff] [blame]151
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]152<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]153<div class="doc_section">
154 <a name="portability">Portability and Supported Platforms</a>
155</div>
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]156<!-- *********************************************************************** -->
157
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]158<div class="doc_text">
159
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]160<p>LLVM is known to work on the following platforms:</p>
Chris Lattner2c7b0872004-06-01 18:22:41 +0000[diff] [blame]161
162<ul>
163<li>Intel and AMD machines running Red Hat Linux and FreeBSD (and probably
164 other unix-like systems).</li>
165<li>Sun UltraSPARC workstations running Solaris 8.</li>
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]166<li>Intel and AMD machines running on Win32 with the Cygwin libraries (limited
167 support is available for native builds with Visual C++).</li>
168<li>PowerPC-based Mac OS X systems, running 10.2 and above.</li>
Chris Lattner2c7b0872004-06-01 18:22:41 +0000[diff] [blame]169</ul>
170
Brian Gaekee3e557e2004-05-09 05:28:35 +0000[diff] [blame]171<p>The core LLVM infrastructure uses
172<a href="http://www.gnu.org/software/autoconf/">GNU autoconf</a> to adapt itself
173to the machine and operating system on which it is built. However, minor
174porting may be required to get LLVM to work on new platforms. We welcome your
175portability patches and reports of successful builds or error messages.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]176
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]177</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]178
179<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]180<div class="doc_section">
181 <a name="knownproblems">Known Problems</a>
182</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]183<!-- *********************************************************************** -->
184
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]185<div class="doc_text">
186
187<p>This section contains all known problems with the LLVM system, listed by
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]188component. As new problems are discovered, they will be added to these
Chris Lattnerb84f3322003-12-12 21:22:16 +0000[diff] [blame]189sections. If you run into a problem, please check the <a
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]190href="http://llvm.cs.uiuc.edu/bugs/">LLVM bug database</a> and submit a bug if
Chris Lattnerb84f3322003-12-12 21:22:16 +0000[diff] [blame]191there isn't already one.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]192
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]193</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]194
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]195<!-- ======================================================================= -->
196<div class="doc_subsection">
197 <a name="experimental">Experimental features included with this release</a>
198</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]199
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]200<div class="doc_text">
201
Misha Brukmanfa50a222004-05-12 21:46:05 +0000[diff] [blame]202<p>The following components of this LLVM release are either untested, known to
203be broken or unreliable, or are in early development. These components should
204not be relied on, and bugs should not be filed against them, but they may be
205useful to some people. In particular, if you would like to work on one of these
206components, please contact us on the llvmdev list.</p>
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]207
208<ul>
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]209<li>The following passes are incomplete or buggy, and may be removed in future
210 releases: <tt>-pgmdep, -memdep, -ipmodref, -cee, -branch-combine,
Misha Brukmandf778352005-01-27 17:59:51 +0000[diff] [blame^]211 -instloops, -parallel, -paths, -pre</tt></li>
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]212<li>The <tt>llvm-db</tt> tool is in a very early stage of development, but can
213 be used to step through programs and inspect the stack.</li>
Chris Lattnerfa835102004-12-02 17:20:17 +0000[diff] [blame]214<li>The "iterative scan" register allocator (enabled with -regalloc=iterativescan)
215 is not stable.</li>
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]216</ul>
217
218</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]219
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]220<!-- ======================================================================= -->
221<div class="doc_subsection">
222 <a name="core">Known problems with the LLVM Core</a>
223</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]224
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]225<div class="doc_text">
226
227<ul>
Reid Spencer493d9c22004-11-25 22:38:30 +0000[diff] [blame]228 <li>In the JIT, <tt>dlsym</tt> on a symbol compiled by the JIT will not work.
229 </li>
230 <li>The JIT does not use mutexes to protect its internal data structures. As
231 such, execution of a threaded program could cause these data structures to be
232 corrupted.
233 </li>
Reid Spencer493d9c22004-11-25 22:38:30 +0000[diff] [blame]234 <li><a href="http://llvm.cs.uiuc.edu/PR240">The lower-invoke pass does not
235 mark values live across a setjmp as volatile</a>. This missing feature
236 only affects targets whose setjmp/longjmp libraries do not save and restore
237 the entire register file.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]238</ul>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]239</div>
240
241<!-- ======================================================================= -->
242<div class="doc_subsection">
243 <a name="c-fe">Known problems with the C front-end</a>
244</div>
Chris Lattner178f3db2003-10-02 05:07:23 +0000[diff] [blame]245
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]246<!-- _______________________________________________________________________ -->
Chris Lattner5a8a7282003-12-14 05:03:43 +0000[diff] [blame]247<div class="doc_subsubsection">Bugs</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]248
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]249<div class="doc_text">
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]250<ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]251<li>C99 Variable sized arrays do not release stack memory when they go out of
252 scope. Thus, the following program may run out of stack space:
253<pre>
254 for (i = 0; i != 1000000; ++i) {
255 int X[n];
256 foo(X);
257 }
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]258</pre></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]259
Misha Brukmanfa50a222004-05-12 21:46:05 +0000[diff] [blame]260<li>Initialization of global union variables can only be done <a
Misha Brukman68ef9a92004-12-04 00:45:09 +0000[diff] [blame]261href="http://llvm.cs.uiuc.edu/PR162">with the largest union member</a>.</li>
Chris Lattner1ab58dd2004-03-16 21:39:04 +0000[diff] [blame]262
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]263</ul>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]264</div>
265
266<!-- _______________________________________________________________________ -->
267<div class="doc_subsubsection">
268 Notes
269</div>
270
271<div class="doc_text">
272
273<ul>
274
275<li>Inline assembly is not yet supported.</li>
Chris Lattnerd2a74272003-10-27 18:30:37 +0000[diff] [blame]276
277<li>"long double" is transformed by the front-end into "double". There is no
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]278support for floating point data types of any size other than 32 and 64
279bits.</li>
280
281<li>The following Unix system functionality has not been tested and may not
282work:
Misha Brukman7cb4e382003-11-22 01:00:11 +0000[diff] [blame]283 <ol>
284 <li><tt>sigsetjmp</tt>, <tt>siglongjmp</tt> - These are not turned into the
285 appropriate <tt>invoke</tt>/<tt>unwind</tt> instructions. Note that
286 <tt>setjmp</tt> and <tt>longjmp</tt> <em>are</em> compiled correctly.
287 <li><tt>getcontext</tt>, <tt>setcontext</tt>, <tt>makecontext</tt>
288 - These functions have not been tested.
289 </ol></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]290
291<li>Although many GCC extensions are supported, some are not. In particular,
292 the following extensions are known to <b>not be</b> supported:
293 <ol>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]294 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Local-Labels.html#Local%20Labels">Local Labels</a>: Labels local to a block.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]295 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html#Nested%20Functions">Nested Functions</a>: As in Algol and Pascal, lexical scoping of functions.</li>
296 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Constructing-Calls.html#Constructing%20Calls">Constructing Calls</a>: Dispatching a call to another function.</li>
297 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#Extended%20Asm">Extended Asm</a>: Assembler instructions with C expressions as operands.</li>
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]298 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Constraints.html#Constraints">Constraints</a>: Constraints for asm operands.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]299 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Asm-Labels.html#Asm%20Labels">Asm Labels</a>: Specifying the assembler name to use for a C symbol.</li>
300 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Explicit-Reg-Vars.html#Explicit%20Reg%20Vars">Explicit Reg Vars</a>: Defining variables residing in specified registers.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]301 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html#Vector%20Extensions">Vector Extensions</a>: Using vector instructions through built-in functions.</li>
302 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Target-Builtins.html#Target%20Builtins">Target Builtins</a>: Built-in functions specific to particular targets.</li>
Tanya Lattner63371342004-12-08 18:25:34 +0000[diff] [blame]303 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Thread_002dLocal.html">Thread-Local</a>: Per-thread variables.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]304 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Pragmas.html#Pragmas">Pragmas</a>: Pragmas accepted by GCC.</li>
Misha Brukman7cb4e382003-11-22 01:00:11 +0000[diff] [blame]305 </ol>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]306
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]307 <p>The following GCC extensions are <b>partially</b> supported. An ignored
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]308 attribute means that the LLVM compiler ignores the presence of the attribute,
309 but the code should still work. An unsupported attribute is one which is
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]310 ignored by the LLVM compiler and will cause a different interpretation of
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]311 the program.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]312
313 <ol>
314 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html#Variable%20Length">Variable Length</a>:
315 Arrays whose length is computed at run time.<br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]316 Supported, but allocated stack space is not freed until the function returns (noted above).</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]317
318 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html#Function%20Attributes">Function Attributes</a>:
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]319
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]320 Declaring that functions have no side effects or that they can never
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]321 return.<br>
322
323 <b>Supported:</b> <tt>format</tt>, <tt>format_arg</tt>, <tt>non_null</tt>,
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]324 <tt>noreturn</tt>, <tt>constructor</tt>, <tt>destructor</tt>,
325 <tt>unused</tt>,
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]326 <tt>deprecated</tt>, <tt>warn_unused_result</tt>, <tt>weak</tt><br>
327
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]328 <b>Ignored:</b> <tt>noinline</tt>,
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]329 <tt>always_inline</tt>, <tt>pure</tt>, <tt>const</tt>, <tt>nothrow</tt>,
330 <tt>malloc</tt>, <tt>no_instrument_function</tt>, <tt>cdecl</tt><br>
331
332 <b>Unsupported:</b> <tt>used</tt>, <tt>section</tt>, <tt>alias</tt>,
333 <tt>visibility</tt>, <tt>regparm</tt>, <tt>stdcall</tt>,
334 <tt>fastcall</tt>, all other target specific attributes</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]335
336 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variable-Attributes.html#Variable%20Attributes">Variable Attributes</a>:
337 Specifying attributes of variables.<br>
338 <b>Supported:</b> <tt>cleanup</tt>, <tt>common</tt>, <tt>nocommon</tt>,
339 <tt>deprecated</tt>, <tt>transparent_union</tt>,
340 <tt>unused</tt>, <tt>weak</tt><br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]341
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]342 <b>Unsupported:</b> <tt>aligned</tt>, <tt>mode</tt>, <tt>packed</tt>,
343 <tt>section</tt>, <tt>shared</tt>, <tt>tls_model</tt>,
344 <tt>vector_size</tt>, <tt>dllimport</tt>,
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]345 <tt>dllexport</tt>, all target specific attributes.</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]346
Misha Brukman8395d732003-12-12 04:37:31 +0000[diff] [blame]347 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Type-Attributes.html#Type%20Attributes">Type Attributes</a>: Specifying attributes of types.<br>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]348 <b>Supported:</b> <tt>transparent_union</tt>, <tt>unused</tt>,
Misha Brukman8395d732003-12-12 04:37:31 +0000[diff] [blame]349 <tt>deprecated</tt>, <tt>may_alias</tt><br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]350
351 <b>Unsupported:</b> <tt>aligned</tt>, <tt>packed</tt>,
352 all target specific attributes.</li>
353
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]354 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html#Other%20Builtins">Other Builtins</a>:
355 Other built-in functions.<br>
356 We support all builtins which have a C language equivalent (e.g.,
357 <tt>__builtin_cos</tt>), <tt>__builtin_alloca</tt>,
358 <tt>__builtin_types_compatible_p</tt>, <tt>__builtin_choose_expr</tt>,
Chris Lattnerb7c4bac2004-06-18 06:26:29 +0000[diff] [blame]359 <tt>__builtin_constant_p</tt>, and <tt>__builtin_expect</tt>
360 (currently ignored). We also support builtins for ISO C99 floating
361 point comparison macros (e.g., <tt>__builtin_islessequal</tt>).</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]362 </ol>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]363
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]364 <p>The following extensions <b>are</b> known to be supported:</p>
365
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]366 <ol>
Chris Lattnerd3dc8502004-03-16 08:54:07 +0000[diff] [blame]367 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html#Labels%20as%20Values">Labels as Values</a>: Getting pointers to labels and computed gotos.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]368 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html#Statement%20Exprs">Statement Exprs</a>: Putting statements and declarations inside expressions.</li>
369 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Typeof.html#Typeof">Typeof</a>: <code>typeof</code>: referring to the type of an expression.</li>
Tanya Lattnerce33a1b2004-06-22 03:48:17 +0000[diff] [blame]370 <li><a href="http://gcc.gnu.org/onlinedocs/gcc-3.4.0/gcc/Lvalues.html#Lvalues">Lvalues</a>: Using <code>?:</code>, "<code>,</code>" and casts in lvalues.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]371 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Conditionals.html#Conditionals">Conditionals</a>: Omitting the middle operand of a <code>?:</code> expression.</li>
372 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Long-Long.html#Long%20Long">Long Long</a>: Double-word integers.</li>
373 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Complex.html#Complex">Complex</a>: Data types for complex numbers.</li>
374 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Hex-Floats.html#Hex%20Floats">Hex Floats</a>:Hexadecimal floating-point constants.</li>
375 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html#Zero%20Length">Zero Length</a>: Zero-length arrays.</li>
376 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Empty-Structures.html#Empty%20Structures">Empty Structures</a>: Structures with no members.</li>
377 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variadic-Macros.html#Variadic%20Macros">Variadic Macros</a>: Macros with a variable number of arguments.</li>
378 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Escaped-Newlines.html#Escaped%20Newlines">Escaped Newlines</a>: Slightly looser rules for escaped newlines.</li>
379 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Subscripting.html#Subscripting">Subscripting</a>: Any array can be subscripted, even if not an lvalue.</li>
Misha Brukman8395d732003-12-12 04:37:31 +0000[diff] [blame]380 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html#Pointer%20Arith">Pointer Arith</a>: Arithmetic on <code>void</code>-pointers and function pointers.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]381 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Initializers.html#Initializers">Initializers</a>: Non-constant initializers.</li>
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]382 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Compound-Literals.html#Compound%20Literals">Compound Literals</a>: Compound literals give structures, unions,
383or arrays as values.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]384 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html#Designated%20Inits">Designated Inits</a>: Labeling elements of initializers.</li>
Misha Brukman8395d732003-12-12 04:37:31 +0000[diff] [blame]385 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Cast-to-Union.html#Cast%20to%20Union">Cast to Union</a>: Casting to union type from any member of the union.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]386 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Case-Ranges.html#Case%20Ranges">Case Ranges</a>: `case 1 ... 9' and such.</li>
387 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html#Mixed%20Declarations">Mixed Declarations</a>: Mixing declarations and code.</li>
388 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Function-Prototypes.html#Function%20Prototypes">Function Prototypes</a>: Prototype declarations and old-style definitions.</li>
Tanya Lattner7591b822004-12-08 18:29:38 +0000[diff] [blame]389 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Comments.html#C_002b_002b-Comments">C++ Comments</a>: C++ comments are recognized.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]390 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Dollar-Signs.html#Dollar%20Signs">Dollar Signs</a>: Dollar sign is allowed in identifiers.</li>
391 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Character-Escapes.html#Character%20Escapes">Character Escapes</a>: <code>\e</code> stands for the character &lt;ESC&gt;.</li>
392 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Alignment.html#Alignment">Alignment</a>: Inquiring about the alignment of a type or variable.</li>
393 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Inline.html#Inline">Inline</a>: Defining inline functions (as fast as macros).</li>
394 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Alternate-Keywords.html#Alternate%20Keywords">Alternate Keywords</a>:<code>__const__</code>, <code>__asm__</code>, etc., for header files.</li>
395 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Incomplete-Enums.html#Incomplete%20Enums">Incomplete Enums</a>: <code>enum foo;</code>, with details to follow.</li>
396 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Function-Names.html#Function%20Names">Function Names</a>: Printable strings which are the name of the current function.</li>
Chris Lattner3646dad2004-02-14 04:08:29 +0000[diff] [blame]397 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Return-Address.html#Return%20Address">Return Address</a>: Getting the return or frame address of a function.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]398 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Unnamed-Fields.html#Unnamed%20Fields">Unnamed Fields</a>: Unnamed struct/union fields within structs/unions.</li>
399 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Attribute-Syntax.html#Attribute%20Syntax">Attribute Syntax</a>: Formal syntax for attributes.</li>
Misha Brukman7cb4e382003-11-22 01:00:11 +0000[diff] [blame]400 </ol></li>
401
402</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]403
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]404<p>If you run into GCC extensions which have not been included in any of these
405lists, please let us know (also including whether or not they work).</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]406
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]407</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]408
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]409<!-- ======================================================================= -->
410<div class="doc_subsection">
411 <a name="c++-fe">Known problems with the C++ front-end</a>
412</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]413
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]414<div class="doc_text">
415
Reid Spencer55684c32004-12-07 08:39:08 +0000[diff] [blame]416<p>For this release, the C++ front-end is considered to be fully
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]417tested and works for a number of non-trivial programs, including LLVM
418itself.</p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]419
420</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]421
422<!-- _______________________________________________________________________ -->
Chris Lattner141ebb62004-02-14 04:12:41 +0000[diff] [blame]423<div class="doc_subsubsection">Bugs</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]424
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]425<div class="doc_text">
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]426
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]427<ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]428<li>The C++ front-end inherits all problems afflicting the <a href="#c-fe">C
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]429 front-end</a>.</li>
Chris Lattner041e6c92004-07-17 02:04:41 +0000[diff] [blame]430
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]431<li><b>IA-64 specific</b>: The C++ front-end does not use <a
432href="http://llvm.cs.uiuc.edu/PR406">IA64 ABI compliant layout of v-tables</a>.
Chris Lattner041e6c92004-07-17 02:04:41 +0000[diff] [blame]433In particular, it just stores function pointers instead of function
434descriptors in the vtable. This bug prevents mixing C++ code compiled with
Chris Lattner2fd93492004-08-02 20:29:51 +0000[diff] [blame]435LLVM with C++ objects compiled by other C++ compilers.</li>
Chris Lattner041e6c92004-07-17 02:04:41 +0000[diff] [blame]436
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]437</ul>
438
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]439</div>
440
441<!-- _______________________________________________________________________ -->
442<div class="doc_subsubsection">
443 Notes
444</div>
445
446<div class="doc_text">
447
448<ul>
Chris Lattnerd2a74272003-10-27 18:30:37 +0000[diff] [blame]449
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]450<li>The C++ front-end is based on a pre-release of the GCC 3.4 C++ parser. This
451parser is significantly more standards compliant (and picky) than prior GCC
452versions. For more information, see the C++ section of the <a
Chris Lattnere76e9ab2003-12-12 04:25:33 +0000[diff] [blame]453href="http://gcc.gnu.org/gcc-3.4/changes.html">GCC 3.4 release notes</a>.</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]454
455<li>Destructors for local objects are not always run when a <tt>longjmp</tt> is
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]456 performed. In particular, destructors for objects in the <tt>longjmp</tt>ing
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]457 function and in the <tt>setjmp</tt> receiver function may not be run.
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]458 Objects in intervening stack frames will be destroyed, however (which is
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]459 better than most compilers).</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]460
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]461<li>The LLVM C++ front-end follows the <a
462 href="http://www.codesourcery.com/cxx-abi">Itanium C++ ABI</a>.
463 This document, which is not Itanium specific, specifies a standard for name
464 mangling, class layout, v-table layout, RTTI formats, and other C++
465 representation issues. Because we use this API, code generated by the LLVM
466 compilers should be binary compatible with machine code generated by other
467 Itanium ABI C++ compilers (such as G++, the Intel and HP compilers, etc).
468 <i>However</i>, the exception handling mechanism used by LLVM is very
469 different from the model used in the Itanium ABI, so <b>exceptions will not
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]470 interact correctly</b>. </li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]471
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]472</ul>
Chris Lattner46ecf612003-10-07 22:14:37 +0000[diff] [blame]473
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]474</div>
475
476<!-- ======================================================================= -->
477<div class="doc_subsection">
478 <a name="x86-be">Known problems with the X86 back-end</a>
479</div>
480
481<div class="doc_text">
482
483<ul>
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]484 <li>none yet</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]485</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]486
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]487</div>
488
489<!-- ======================================================================= -->
490<div class="doc_subsection">
Misha Brukmana516e992004-07-12 16:55:41 +0000[diff] [blame]491 <a name="sparcv9-be">Known problems with the SparcV9 back-end</a>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]492</div>
493
494<div class="doc_text">
495
496<ul>
Misha Brukmana516e992004-07-12 16:55:41 +0000[diff] [blame]497<li><a href="http://llvm.cs.uiuc.edu/PR60">[sparcv9] SparcV9 backend miscompiles
498several programs in the LLVM test suite</a></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]499</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]500
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]501</div>
502
503<!-- ======================================================================= -->
504<div class="doc_subsection">
Chris Lattnerdf925ce2004-11-07 01:55:32 +0000[diff] [blame]505 <a name="ppc-be">Known problems with the PowerPC back-end</a>
506</div>
507
508<div class="doc_text">
509
510<ul>
511<li>none yet</li>
512</ul>
513
514</div>
515
516<!-- ======================================================================= -->
517<div class="doc_subsection">
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]518 <a name="c-be">Known problems with the C back-end</a>
519</div>
520
521<div class="doc_text">
522
523<ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]524
525<li>The C back-end produces code that violates the ANSI C Type-Based Alias
526Analysis rules. As such, special options may be necessary to compile the code
527(for example, GCC requires the <tt>-fno-strict-aliasing</tt> option). This
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]528problem probably cannot be fixed.</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]529
Chris Lattnerc679fbb2003-11-04 20:06:53 +0000[diff] [blame]530<li><a href="http://llvm.cs.uiuc.edu/PR56">Zero arg vararg functions are not
Chris Lattnerb28c3282003-10-24 04:03:19 +0000[diff] [blame]531supported</a>. This should not affect LLVM produced by the C or C++
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]532frontends.</li>
Chris Lattnerb28c3282003-10-24 04:03:19 +0000[diff] [blame]533
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]534</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]535
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]536</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]537
538<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]539<div class="doc_section">
540 <a name="additionalinfo">Additional Information</a>
541</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]542<!-- *********************************************************************** -->
543
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]544<div class="doc_text">
545
546<p>A wide variety of additional information is available on the LLVM web page,
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]547including mailing lists and publications describing algorithms and components
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]548implemented in LLVM. The web page also contains versions of the API
549documentation which is up-to-date with the CVS version of the source code. You
550can access versions of these documents specific to this release by going into
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]551the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]552
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]553<p>If you have any questions or comments about LLVM, please feel free to contact
Chris Lattnerb84f3322003-12-12 21:22:16 +0000[diff] [blame]554us via the <a href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">mailing
555lists</a>.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]556
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]557</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]558
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Misha Brukman7cb4e382003-11-22 01:00:11 +0000[diff] [blame]568 <a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a><br>
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