Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / 759d34ffb718cf35e97682b5bd541beb82d9a192 / . / docs / ReleaseNotes.html
blob: 9079cf53f06d48e346f917a435c3e3f65ecd6fc1 [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>
5 <link rel="stylesheet" href="llvm.css" type="text/css">
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]6 <title>LLVM 1.3 Release Notes</title>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]7</head>
8<body>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]9
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]10<div class="doc_title">LLVM 1.3 Release Notes</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]11
12<ol>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]13 <li><a href="#intro">Introduction</a></li>
14 <li><a href="#whatsnew">What's New?</a></li>
15 <li><a href="#portability">Portability and Supported Platforms</a></li>
16 <li><a href="#install-instructions">Installation Instructions</a></li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]17 <li><a href="#knownproblems">Known Problems</a>
18 <ul>
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]19 <li><a href="#experimental">Experimental features included in this
20 release</a>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]21 <li><a href="#core">Known problems with the LLVM Core</a>
22 <li><a href="#c-fe">Known problems with the C Front-end</a>
23 <li><a href="#c++-fe">Known problems with the C++ Front-end</a>
24 <li><a href="#x86-be">Known problems with the X86 Back-end</a>
25 <li><a href="#sparc-be">Known problems with the Sparc Back-end</a>
26 <li><a href="#c-be">Known problems with the C back-end</a>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]27 </ul></li>
28 <li><a href="#additionalinfo">Additional Information</a></li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]29</ol>
30
Misha Brukmane0c891c2003-11-22 01:00:11 +0000[diff] [blame]31<div class="doc_text">
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]32 <p><b>Written by the <a href="http://llvm.cs.uiuc.edu">LLVM team</a></b><p>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]33</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]34
35<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]36<div class="doc_section">
37 <a name="intro">Introduction</a>
38</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]39<!-- *********************************************************************** -->
40
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]41<div class="doc_text">
42
43<p>This document contains the release notes for the LLVM compiler
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]44infrastructure, release 1.3. Here we describe the status of LLVM, including any
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]45known problems and bug fixes from the previous release. The most up-to-date
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]46version of this document can be found on the <a
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]47href="http://llvm.cs.uiuc.edu/releases/1.3/">LLVM 1.3 web site</a>. If you are
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]48not reading this on the LLVM web pages, you should probably go there because
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]49this document may be updated after the release.</p>
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]50
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]51<p>For more information about LLVM, including information about potentially more
Chris Lattner47ad72c2003-10-07 21:38:31 +0000[diff] [blame]52current releases, please check out the <a href="http://llvm.cs.uiuc.edu">main
53web site</a>. If you have questions or comments, the <a
54href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM developer's mailing
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]55list</a> is a good place to send them.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]56
Chris Lattner9e848092003-12-12 04:25:33 +0000[diff] [blame]57<p>Note that if you are reading this file from CVS, this document applies
58to the <i>next</i> release, not the current one. To see the release notes for
59the current or previous releases, see the <a
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]60href="http://llvm.cs.uiuc.edu/releases/">releases page</a>.</p>
61
62</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]63
64<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]65<div class="doc_section">
66 <a name="whatsnew">What's New?</a>
67</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]68<!-- *********************************************************************** -->
69
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]70<div class="doc_text">
71
Chris Lattnera39719f2004-02-25 16:36:51 +0000[diff] [blame]72<p>
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]73This is the fourth public release of the LLVM compiler infrastructure.
Chris Lattnerb40efb32003-12-14 05:03:43 +0000[diff] [blame]74</p>
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]75
Chris Lattner835104c2004-03-17 03:54:41 +0000[diff] [blame]76<p>
77At this time, LLVM is known to correctly compile and run all C &amp; C++ SPEC
78CPU2000 benchmarks, the Olden benchmarks, and the Ptrdist benchmarks. It has
79also been used to compile <b>many</b> other programs. LLVM now also works with
80a broad variety of C++ programs, though it has still received less testing than
81the C front-end.
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]82</p>
83
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]84<!--=========================================================================-->
85<div class="doc_subsubsection">
Chris Lattnera39719f2004-02-25 16:36:51 +0000[diff] [blame]86<a name="newfeatures">This release implements the following new features:</a>
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]87</div>
Chris Lattner47ad72c2003-10-07 21:38:31 +0000[diff] [blame]88
89<ol>
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]90<li>The LLVM <a href="LangRef.html#i_select"><tt>select</tt></a> instruction is
91now fully implemented and supported by all targets.</li>
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]92<li>Bugpoint can now narrow down code-generation bugs to a loop nest, where
93before it could only narrow them down to a function being miscompiled.</li>
Chris Lattner55ee0312003-11-19 22:05:38 +0000[diff] [blame]94</ol>
Chris Lattner0ef19062003-11-08 04:28:55 +0000[diff] [blame]95
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]96
97<!--=========================================================================-->
98<div class="doc_subsubsection">
99In this release, the following missing features were implemented:
100</div>
Chris Lattner0ef19062003-11-08 04:28:55 +0000[diff] [blame]101
102<ol>
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]103<li><a href="http://llvm.cs.uiuc.edu/PR82">LLVM cannot handle structures with
104more than 256 elements</a></li>
Misha Brukmancb003362004-04-19 03:01:01 +0000[diff] [blame]105<li><a href="http://llvm.cs.uiuc.edu/PR38">[bugpoint] External functions used in
106non-instruction entities, such as global constant initializer</a></li>
107<li><a href="http://llvm.cs.uiuc.edu/PR290">Bugpoint doesn't support
108uses of external fns by immediate constant exprs</a></li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]109</ol>
Chris Lattner47ad72c2003-10-07 21:38:31 +0000[diff] [blame]110
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]111
112<!--=========================================================================-->
113<div class="doc_subsubsection">
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]114<a name="qualityofimp">In this release, the following Quality of Implementation
115issues were fixed:</a>
Chris Lattnere29ac162003-12-20 03:42:11 +0000[diff] [blame]116</div>
117
118<ol>
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]119<li><a href="http://llvm.cs.uiuc.edu/PR305">LLVM tools will happily spew
120bytecode onto your terminal</a></li>
Chris Lattnere29ac162003-12-20 03:42:11 +0000[diff] [blame]121</ol>
122
123<!--=========================================================================-->
124<div class="doc_subsubsection">
Chris Lattnera39719f2004-02-25 16:36:51 +0000[diff] [blame]125In this release, the following build problems were fixed:
Brian Gaeke6b31beb2004-01-16 21:55:04 +0000[diff] [blame]126</div>
127
128<ol>
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]129<li></li>
Brian Gaeke6b31beb2004-01-16 21:55:04 +0000[diff] [blame]130</ol>
131
132<!--=========================================================================-->
133<div class="doc_subsubsection">
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]134<a name="codequality">In this release, the following Code Quality issues were
135fixed:</a>
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]136</div>
Chris Lattner89ca2b82003-10-27 17:06:39 +0000[diff] [blame]137
138<ol>
Chris Lattner64913402004-04-13 14:43:35 +0000[diff] [blame]139<li><a href="http://llvm.cs.uiuc.edu/PR309">[vmcore] Code quality problem due to
140long operand of getelementptr</a></li>
141
142<li>The X86 backend now generates substantially better code for 64-bit integer
143and floating point operations.</li>
144
145<li>The -inline pass no longer inlines mutually recursive functions until it
146hits the inlining threshold.</li>
147
148<li>The -inline pass no longer misses obvious inlining opportunities just
149because the callee eventually calls into an external function.</li>
150
151<li>The -simplifycfg pass can now "if convert" simple statements into the new
152<tt>select</tt> instruction.</li>
153
154<li>The -loopsimplify pass can now break <a
155href="http://llvm.cs.uiuc.edu/PR35">natural loops with multiple backedges</a>
156into multiple nested loops. This enables a variety of subsequent
157optimizations.</li>
158
159<li>The -adce pass can now eliminate calls to functions that do not not write to
160memory.</li>
161
162<li>The link-time optimizer now runs the -prune-eh pass (to remove unused
163exception handlers.</li>
164
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]165</ol>
Chris Lattner89ca2b82003-10-27 17:06:39 +0000[diff] [blame]166
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]167
168<!--=========================================================================-->
169<div class="doc_subsubsection">
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]170<a name="bugfix">In this release, the following bugs in the previous release
171were fixed:</a>
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]172</div>
173
174<p>Bugs in the LLVM Core:</p>
Chris Lattner47ad72c2003-10-07 21:38:31 +0000[diff] [blame]175
176<ol>
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]177<li><a href="http://llvm.cs.uiuc.edu/PR306">[loopsimplify] Loop simplify
178incorrectly updates dominator information</a></li>
179<li><a href="http://llvm.cs.uiuc.edu/PR310">[tailduplicate] DemoteRegToStack
180breaks SSA form</a></li>
181<li><a href="http://llvm.cs.uiuc.edu/PR313">[X86] JIT miscompiles unsigned short
182to floating point cast</a></li>
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]183</ol>
184
185
Chris Lattner56e67052004-02-09 21:22:51 +0000[diff] [blame]186
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]187<p>Bugs in the C/C++ front-end:</p>
188
189<ol>
Chris Lattner2974b5b2004-04-01 00:41:31 +0000[diff] [blame]190<li></li>
Chris Lattnera5099962003-12-06 20:22:41 +0000[diff] [blame]191</ol>
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]192
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]193</div>
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]194
195<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]196<div class="doc_section">
197 <a name="portability">Portability and Supported Platforms</a>
198</div>
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]199<!-- *********************************************************************** -->
200
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]201<div class="doc_text">
202
203<p>LLVM has been extensively tested on Intel and AMD machines running Red
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]204Hat Linux and FreeBSD. It has also been tested on Sun UltraSPARC workstations
205running Solaris 8. Additionally, LLVM works on Mac OS X 10.3 and above, but
206only with the C backend or interpreter (no native backend for the PowerPC is
207available yet). The core LLVM infrastructure uses "autoconf" for portability,
208so hopefully we work on more platforms than that. However, it is likely that we
209missed something and that minor porting is required to get LLVM to work on new
210platforms. We welcome portability patches and error messages.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]211
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]212</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]213
214<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]215<div class="doc_section">
216 <a name="knownproblems">Known Problems</a>
217</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]218<!-- *********************************************************************** -->
219
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]220<div class="doc_text">
221
222<p>This section contains all known problems with the LLVM system, listed by
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]223component. As new problems are discovered, they will be added to these
Chris Lattner5eccca42003-12-12 21:22:16 +0000[diff] [blame]224sections. If you run into a problem, please check the <a
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]225href="http://llvm.cs.uiuc.edu/bugs/">LLVM bug database</a> and submit a bug if
Chris Lattner5eccca42003-12-12 21:22:16 +0000[diff] [blame]226there isn't already one.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]227
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]228</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]229
Chris Lattnerf5ee1702004-03-14 02:03:02 +0000[diff] [blame]230<!-- ======================================================================= -->
231<div class="doc_subsection">
232 <a name="experimental">Experimental features included with this release</a>
233</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]234
Chris Lattnerf5ee1702004-03-14 02:03:02 +0000[diff] [blame]235<div class="doc_text">
236
237<p>
238The following components of this LLVM release are either untested, known to be
239broken or unreliable, or are in early development. These components should not
240be relied on, and bugs should not be filed against them, but they may be useful
241to some people. In particular, if you would like to work on one of these
242components, please contact us on the llvmdev list.
243</p>
244
245<ul>
246<li>The following passes are incomplete or buggy: <tt>-pgmdep, -memdep,
247 -ipmodref, -sortstructs, -swapstructs, -cee</tt></li>
248
249<li>The <tt>-pre</tt> pass is incomplete (there are cases it doesn't handle that
250 it should) and not thoroughly tested.</li>
251<li>The <tt>llvm-ar</tt> tool is incomplete and probably buggy.</li>
252<li>The <tt>llvm-db</tt> tool is in a very early stage of development.</li>
253</ul>
254
255</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]256
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]257<!-- ======================================================================= -->
258<div class="doc_subsection">
259 <a name="core">Known problems with the LLVM Core</a>
260</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]261
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]262<div class="doc_text">
263
264<ul>
265
266<li>In the JIT, <tt>dlsym</tt> on a symbol compiled by the JIT will not
267work.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]268
269<li>The JIT does not use mutexes to protect its internal data structures. As
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]270such, execution of a threaded program could cause these data structures to be
271corrupted.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]272
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]273<li>It is not possible to <tt>dlopen</tt> an LLVM bytecode file in the JIT.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]274
Chris Lattnere84843b2003-10-20 19:05:03 +0000[diff] [blame]275<li>Linking in static archive files (.a files) is very slow (there is no symbol
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]276table in the archive).</li>
Chris Lattner2855ecd2003-11-04 20:06:53 +0000[diff] [blame]277
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]278<li>The gccld program <a href="http://llvm.cs.uiuc.edu/PR139">does not link
279objects/archives in the order specified on the command line.</a></li>
Chris Lattner2e6fcaf2004-02-15 23:09:07 +0000[diff] [blame]280
281<li><a href="http://llvm.cs.uiuc.edu/PR240">The lower-invoke pass does not mark
John Criswelld46c6962004-03-12 21:29:42 +0000[diff] [blame]282values live across a setjmp as volatile</a>. This missing feature only affects
Chris Lattner2e6fcaf2004-02-15 23:09:07 +0000[diff] [blame]283targets whose setjmp/longjmp libraries do not save and restore the entire
284register file.</li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]285</ul>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]286</div>
287
288<!-- ======================================================================= -->
289<div class="doc_subsection">
290 <a name="c-fe">Known problems with the C front-end</a>
291</div>
Chris Lattner47588f92003-10-02 05:07:23 +0000[diff] [blame]292
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]293<!-- _______________________________________________________________________ -->
Chris Lattnerb40efb32003-12-14 05:03:43 +0000[diff] [blame]294<div class="doc_subsubsection">Bugs</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]295
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]296<div class="doc_text">
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]297<ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]298<li>C99 Variable sized arrays do not release stack memory when they go out of
299 scope. Thus, the following program may run out of stack space:
300<pre>
301 for (i = 0; i != 1000000; ++i) {
302 int X[n];
303 foo(X);
304 }
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]305</pre></li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]306
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]307<li>
308Initialization of global union variables can only be done
309<a href="http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=162">with the largest
310union member</a>.
311</li>
Chris Lattnerf580cdc2004-03-16 21:39:04 +0000[diff] [blame]312
Misha Brukmana7aadf12004-04-19 02:56:49 +0000[diff] [blame]313<li><a href="http://llvm.cs.uiuc.edu/PR244">[llvm-gcc] Error when an implicitly
314external function is re-declared as static</a></li>
Chris Lattnerf580cdc2004-03-16 21:39:04 +0000[diff] [blame]315
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]316</ul>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]317</div>
318
319<!-- _______________________________________________________________________ -->
320<div class="doc_subsubsection">
321 Notes
322</div>
323
324<div class="doc_text">
325
326<ul>
327
328<li>Inline assembly is not yet supported.</li>
Chris Lattnere01fcfb2003-10-27 18:30:37 +0000[diff] [blame]329
330<li>"long double" is transformed by the front-end into "double". There is no
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]331support for floating point data types of any size other than 32 and 64
332bits.</li>
333
334<li>The following Unix system functionality has not been tested and may not
335work:
Misha Brukmane0c891c2003-11-22 01:00:11 +0000[diff] [blame]336 <ol>
337 <li><tt>sigsetjmp</tt>, <tt>siglongjmp</tt> - These are not turned into the
338 appropriate <tt>invoke</tt>/<tt>unwind</tt> instructions. Note that
339 <tt>setjmp</tt> and <tt>longjmp</tt> <em>are</em> compiled correctly.
340 <li><tt>getcontext</tt>, <tt>setcontext</tt>, <tt>makecontext</tt>
341 - These functions have not been tested.
342 </ol></li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]343
344<li>Although many GCC extensions are supported, some are not. In particular,
345 the following extensions are known to <b>not be</b> supported:
346 <ol>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]347 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Local-Labels.html#Local%20Labels">Local Labels</a>: Labels local to a block.</li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]348 <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>
349 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Constructing-Calls.html#Constructing%20Calls">Constructing Calls</a>: Dispatching a call to another function.</li>
350 <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 Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]351 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Constraints.html#Constraints">Constraints</a>: Constraints for asm operands.</li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]352 <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>
353 <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 Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]354 <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>
355 <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>
356 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Thread-Local.html#Thread-Local">Thread-Local</a>: Per-thread variables.</li>
357 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Pragmas.html#Pragmas">Pragmas</a>: Pragmas accepted by GCC.</li>
Misha Brukmane0c891c2003-11-22 01:00:11 +0000[diff] [blame]358 </ol>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]359
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]360 <p>The following GCC extensions are <b>partially</b> supported. An ignored
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]361 attribute means that the LLVM compiler ignores the presence of the attribute,
362 but the code should still work. An unsupported attribute is one which is
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]363 ignored by the LLVM compiler and will cause a different interpretation of
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]364 the program.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]365
366 <ol>
367 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html#Variable%20Length">Variable Length</a>:
368 Arrays whose length is computed at run time.<br>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]369 Supported, but allocated stack space is not freed until the function returns (noted above).</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]370
371 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html#Function%20Attributes">Function Attributes</a>:
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]372
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]373 Declaring that functions have no side effects or that they can never
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]374 return.<br>
375
376 <b>Supported:</b> <tt>format</tt>, <tt>format_arg</tt>, <tt>non_null</tt>,
377 <tt>constructor</tt>, <tt>destructor</tt>, <tt>unused</tt>,
378 <tt>deprecated</tt>, <tt>warn_unused_result</tt>, <tt>weak</tt><br>
379
380 <b>Ignored:</b> <tt>noreturn</tt>, <tt>noinline</tt>,
381 <tt>always_inline</tt>, <tt>pure</tt>, <tt>const</tt>, <tt>nothrow</tt>,
382 <tt>malloc</tt>, <tt>no_instrument_function</tt>, <tt>cdecl</tt><br>
383
384 <b>Unsupported:</b> <tt>used</tt>, <tt>section</tt>, <tt>alias</tt>,
385 <tt>visibility</tt>, <tt>regparm</tt>, <tt>stdcall</tt>,
386 <tt>fastcall</tt>, all other target specific attributes</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]387
388 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variable-Attributes.html#Variable%20Attributes">Variable Attributes</a>:
389 Specifying attributes of variables.<br>
390 <b>Supported:</b> <tt>cleanup</tt>, <tt>common</tt>, <tt>nocommon</tt>,
391 <tt>deprecated</tt>, <tt>transparent_union</tt>,
392 <tt>unused</tt>, <tt>weak</tt><br>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]393
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]394 <b>Unsupported:</b> <tt>aligned</tt>, <tt>mode</tt>, <tt>packed</tt>,
395 <tt>section</tt>, <tt>shared</tt>, <tt>tls_model</tt>,
396 <tt>vector_size</tt>, <tt>dllimport</tt>,
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]397 <tt>dllexport</tt>, all target specific attributes.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]398
Misha Brukmanc4b7bee2003-12-12 04:37:31 +0000[diff] [blame]399 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Type-Attributes.html#Type%20Attributes">Type Attributes</a>: Specifying attributes of types.<br>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]400 <b>Supported:</b> <tt>transparent_union</tt>, <tt>unused</tt>,
Misha Brukmanc4b7bee2003-12-12 04:37:31 +0000[diff] [blame]401 <tt>deprecated</tt>, <tt>may_alias</tt><br>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]402
403 <b>Unsupported:</b> <tt>aligned</tt>, <tt>packed</tt>,
404 all target specific attributes.</li>
405
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]406 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html#Other%20Builtins">Other Builtins</a>:
407 Other built-in functions.<br>
408 We support all builtins which have a C language equivalent (e.g.,
409 <tt>__builtin_cos</tt>), <tt>__builtin_alloca</tt>,
410 <tt>__builtin_types_compatible_p</tt>, <tt>__builtin_choose_expr</tt>,
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]411 <tt>__builtin_constant_p</tt>, and <tt>__builtin_expect</tt> (ignored).</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]412
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]413 </ol>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]414
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]415 <p>The following extensions <b>are</b> known to be supported:</p>
416
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]417 <ol>
Chris Lattner7fe97dd2004-03-16 08:54:07 +0000[diff] [blame]418 <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 Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]419 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html#Statement%20Exprs">Statement Exprs</a>: Putting statements and declarations inside expressions.</li>
420 <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>
421 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Lvalues.html#Lvalues">Lvalues</a>: Using <code>?:</code>, "<code>,</code>" and casts in lvalues.</li>
422 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Conditionals.html#Conditionals">Conditionals</a>: Omitting the middle operand of a <code>?:</code> expression.</li>
423 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Long-Long.html#Long%20Long">Long Long</a>: Double-word integers.</li>
424 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Complex.html#Complex">Complex</a>: Data types for complex numbers.</li>
425 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Hex-Floats.html#Hex%20Floats">Hex Floats</a>:Hexadecimal floating-point constants.</li>
426 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html#Zero%20Length">Zero Length</a>: Zero-length arrays.</li>
427 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Empty-Structures.html#Empty%20Structures">Empty Structures</a>: Structures with no members.</li>
428 <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>
429 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Escaped-Newlines.html#Escaped%20Newlines">Escaped Newlines</a>: Slightly looser rules for escaped newlines.</li>
430 <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 Brukmanc4b7bee2003-12-12 04:37:31 +0000[diff] [blame]431 <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 Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]432 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Initializers.html#Initializers">Initializers</a>: Non-constant initializers.</li>
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]433 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Compound-Literals.html#Compound%20Literals">Compound Literals</a>: Compound literals give structures, unions,
434or arrays as values.</li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]435 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html#Designated%20Inits">Designated Inits</a>: Labeling elements of initializers.</li>
Misha Brukmanc4b7bee2003-12-12 04:37:31 +0000[diff] [blame]436 <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 Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]437 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Case-Ranges.html#Case%20Ranges">Case Ranges</a>: `case 1 ... 9' and such.</li>
438 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html#Mixed%20Declarations">Mixed Declarations</a>: Mixing declarations and code.</li>
439 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Function-Prototypes.html#Function%20Prototypes">Function Prototypes</a>: Prototype declarations and old-style definitions.</li>
440 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/C---Comments.html#C++%20Comments">C++ Comments</a>: C++ comments are recognized.</li>
441 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Dollar-Signs.html#Dollar%20Signs">Dollar Signs</a>: Dollar sign is allowed in identifiers.</li>
442 <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>
443 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Alignment.html#Alignment">Alignment</a>: Inquiring about the alignment of a type or variable.</li>
444 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Inline.html#Inline">Inline</a>: Defining inline functions (as fast as macros).</li>
445 <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>
446 <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>
447 <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 Lattner25795bc2004-02-14 04:08:29 +0000[diff] [blame]448 <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 Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]449 <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>
450 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Attribute-Syntax.html#Attribute%20Syntax">Attribute Syntax</a>: Formal syntax for attributes.</li>
Misha Brukmane0c891c2003-11-22 01:00:11 +0000[diff] [blame]451 </ol></li>
452
453</ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]454
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]455<p>If you run into GCC extensions which have not been included in any of these
456lists, please let us know (also including whether or not they work).</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]457
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]458</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]459
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]460<!-- ======================================================================= -->
461<div class="doc_subsection">
462 <a name="c++-fe">Known problems with the C++ front-end</a>
463</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]464
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]465<div class="doc_text">
466
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]467<p>For this release, the C++ front-end is considered to be fully functional but
Chris Lattner9e848092003-12-12 04:25:33 +0000[diff] [blame]468has not been tested as thoroughly as the C front-end. It has been tested and
469works for a number of non-trivial programs, but there may be lurking bugs.
470Please report any bugs or problems.</p>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]471
472</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]473
474<!-- _______________________________________________________________________ -->
Chris Lattner3a51be12004-02-14 04:12:41 +0000[diff] [blame]475<div class="doc_subsubsection">Bugs</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]476
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]477<div class="doc_text">
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]478
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]479<ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]480<li>The C++ front-end inherits all problems afflicting the <a href="#c-fe">C
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]481 front-end</a>.</li>
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]482</ul>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]483</div>
484
485<!-- _______________________________________________________________________ -->
486<div class="doc_subsubsection">
487 Notes
488</div>
489
490<div class="doc_text">
491
492<ul>
Chris Lattnere01fcfb2003-10-27 18:30:37 +0000[diff] [blame]493
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]494<li>The C++ front-end is based on a pre-release of the GCC 3.4 C++ parser. This
495parser is significantly more standards compliant (and picky) than prior GCC
496versions. For more information, see the C++ section of the <a
Chris Lattner9e848092003-12-12 04:25:33 +0000[diff] [blame]497href="http://gcc.gnu.org/gcc-3.4/changes.html">GCC 3.4 release notes</a>.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]498
499<li>Destructors for local objects are not always run when a <tt>longjmp</tt> is
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]500 performed. In particular, destructors for objects in the <tt>longjmp</tt>ing
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]501 function and in the <tt>setjmp</tt> receiver function may not be run.
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]502 Objects in intervening stack frames will be destroyed, however (which is
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]503 better than most compilers).</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]504
Chris Lattner19092612003-10-02 16:38:05 +0000[diff] [blame]505<li>The LLVM C++ front-end follows the <a
506 href="http://www.codesourcery.com/cxx-abi">Itanium C++ ABI</a>.
507 This document, which is not Itanium specific, specifies a standard for name
508 mangling, class layout, v-table layout, RTTI formats, and other C++
509 representation issues. Because we use this API, code generated by the LLVM
510 compilers should be binary compatible with machine code generated by other
511 Itanium ABI C++ compilers (such as G++, the Intel and HP compilers, etc).
512 <i>However</i>, the exception handling mechanism used by LLVM is very
513 different from the model used in the Itanium ABI, so <b>exceptions will not
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]514 interact correctly</b>. </li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]515
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]516</ul>
Chris Lattnerfcc54b32003-10-07 22:14:37 +0000[diff] [blame]517
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]518</div>
519
520<!-- ======================================================================= -->
521<div class="doc_subsection">
522 <a name="x86-be">Known problems with the X86 back-end</a>
523</div>
524
525<div class="doc_text">
526
527<ul>
Chris Lattnerde4afdc2004-02-08 22:23:33 +0000[diff] [blame]528<li>None so far.
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]529</ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]530
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]531</div>
532
533<!-- ======================================================================= -->
534<div class="doc_subsection">
535 <a name="sparc-be">Known problems with the Sparc back-end</a>
536</div>
537
538<div class="doc_text">
539
540<ul>
Chris Lattner6a39aa52004-03-19 19:22:28 +0000[diff] [blame]541<li>There are several programs in the LLVM testsuite that the Sparc code generator is known to miscompile.</li>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]542</ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]543
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]544</div>
545
546<!-- ======================================================================= -->
547<div class="doc_subsection">
548 <a name="c-be">Known problems with the C back-end</a>
549</div>
550
551<div class="doc_text">
552
553<ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]554
555<li>The C back-end produces code that violates the ANSI C Type-Based Alias
556Analysis rules. As such, special options may be necessary to compile the code
557(for example, GCC requires the <tt>-fno-strict-aliasing</tt> option). This
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]558problem probably cannot be fixed.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]559
Chris Lattnere84843b2003-10-20 19:05:03 +0000[diff] [blame]560<li><a href="http://llvm.cs.uiuc.edu/PR33">Initializers for global variables</a>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]561cannot include special floating point numbers like Not-A-Number or
562Infinity.</li>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]563
Chris Lattner2855ecd2003-11-04 20:06:53 +0000[diff] [blame]564<li><a href="http://llvm.cs.uiuc.edu/PR56">Zero arg vararg functions are not
Chris Lattner2af46052003-10-24 04:03:19 +0000[diff] [blame]565supported</a>. This should not affect LLVM produced by the C or C++
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]566frontends.</li>
Chris Lattner2af46052003-10-24 04:03:19 +0000[diff] [blame]567
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]568</ul>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]569
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]570</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]571
572<!-- *********************************************************************** -->
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]573<div class="doc_section">
574 <a name="additionalinfo">Additional Information</a>
575</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]576<!-- *********************************************************************** -->
577
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]578<div class="doc_text">
579
580<p>A wide variety of additional information is available on the LLVM web page,
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]581including mailing lists and publications describing algorithms and components
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]582implemented in LLVM. The web page also contains versions of the API
583documentation which is up-to-date with the CVS version of the source code. You
584can access versions of these documents specific to this release by going into
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]585the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]586
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]587<p>If you have any questions or comments about LLVM, please feel free to contact
Chris Lattner5eccca42003-12-12 21:22:16 +0000[diff] [blame]588us via the <a href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">mailing
589lists</a>.</p>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]590
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]591</div>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]592
593<!-- *********************************************************************** -->
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]594
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]595<hr>
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]596<address>
Misha Brukman38847d52003-12-21 22:53:21 +0000[diff] [blame]597 <a href="http://jigsaw.w3.org/css-validator/check/referer"><img
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]598 src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!"></a>
599 <a href="http://validator.w3.org/check/referer"><img
600 src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!" /></a>
601
Misha Brukmane0c891c2003-11-22 01:00:11 +0000[diff] [blame]602 <a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a><br>
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]603 Last modified: $Date$
Misha Brukman2061e892003-11-22 01:23:39 +0000[diff] [blame]604</address>
Chris Lattner79c3fe12003-10-02 04:57:28 +0000[diff] [blame]605
Misha Brukman500bc302003-11-22 00:38:41 +0000[diff] [blame]606</body>
607</html>