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gerrit-public.fairphone.software / toolchain / llvm-project / 3bef66fcf3cd6ded6cded2a4fe539212b3736146 / . / llvm / docs / ReleaseNotes.html
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4<head>
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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 Lattnerf87e05b2005-02-01 01:33:52 +0000[diff] [blame]81 <li>LLVM 1.5 is now about 15% faster than LLVM 1.4 and its core data structures
Chris Lattnere14babd2005-02-13 22:27:24 +0000[diff] [blame]82 use about 30% less memory.</li>
83 <li>LLVM includes new experimental native code generators for SparcV8 and
84 Alpha.</li>
85 <li>Support for Microsoft Visual Studio is improved, and <a
Chris Lattnerbe895ed2005-02-14 22:58:38 +0000[diff] [blame]86 href="GettingStartedVS.html">now documented</a>.</li>
Chris Lattner592db402003-11-19 22:05:38 +0000[diff] [blame]87</ol>
Chris Lattner4491de62003-11-08 04:28:55 +0000[diff] [blame]88
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]89</div>
90
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]91
92<!--=========================================================================-->
93<div class="doc_subsubsection">
94In this release, the following missing features were implemented:
95</div>
Chris Lattner4491de62003-11-08 04:28:55 +0000[diff] [blame]96
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]97<div class="doc_text">
98
Chris Lattner4491de62003-11-08 04:28:55 +0000[diff] [blame]99<ol>
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]100 <li></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]101</ol>
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]102
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]103</div>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]104
105<!--=========================================================================-->
106<div class="doc_subsubsection">
Misha Brukman017f2f32004-04-19 02:56:49 +0000[diff] [blame]107<a name="qualityofimp">In this release, the following Quality of Implementation
108issues were fixed:</a>
Chris Lattner4df78f02003-12-20 03:42:11 +0000[diff] [blame]109</div>
110
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]111<div class="doc_text">
112
Chris Lattner4df78f02003-12-20 03:42:11 +0000[diff] [blame]113<ol>
Chris Lattner64d9d2b2005-01-22 18:45:35 +0000[diff] [blame]114 <li><a href="http://llvm.cs.uiuc.edu/PR448">Building LLVM in optimized mode
115 should no longer cause GCC to hit swap in the PowerPC backend.</a></li>
Brian Gaeke8b05e4f2004-01-16 21:55:04 +0000[diff] [blame]116</ol>
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]117</div>
Brian Gaeke8b05e4f2004-01-16 21:55:04 +0000[diff] [blame]118
119<!--=========================================================================-->
120<div class="doc_subsubsection">
Chris Lattner2ad48782004-05-02 04:19:15 +0000[diff] [blame]121<a name="codequality">This release includes the following Code Quality
122improvements:</a>
Chris Lattner23257062004-05-23 20:42:08 +0000[diff] [blame]123</div>
Chris Lattner639579c2003-10-27 17:06:39 +0000[diff] [blame]124
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]125<div class="doc_text">
Chris Lattner639579c2003-10-27 17:06:39 +0000[diff] [blame]126<ol>
Chris Lattnerf3a7c242004-12-09 22:22:58 +0000[diff] [blame]127 <li></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]128</ol>
Reid Spencer3e58f582004-05-23 17:23:13 +0000[diff] [blame]129</div>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]130
131<!--=========================================================================-->
132<div class="doc_subsubsection">
Misha Brukman017f2f32004-04-19 02:56:49 +0000[diff] [blame]133<a name="bugfix">In this release, the following bugs in the previous release
134were fixed:</a>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]135</div>
136
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]137<div class="doc_text">
138
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]139
Chris Lattner1c75b252005-02-14 16:57:55 +0000[diff] [blame]140<p>Bugs fixed in the LLVM Core:</p>
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]141<ol>
Chris Lattnerb5c253a2004-12-29 04:39:50 +0000[diff] [blame]142 <li><a href="http://llvm.cs.uiuc.edu/PR491">[dse] DSE deletes stores that
143 are partially overwritten by smaller stores</a></li>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]144</ol>
145
Chris Lattner1c75b252005-02-14 16:57:55 +0000[diff] [blame]146<p>Code Generator Bugs:</p>
147<ol>
148 <li><a href="http://llvm.cs.uiuc.edu/PR490">[cbackend] Logical constant
149 expressions (and/or/xor) not implemented</a></li>
150 <li><a href="http://llvm.cs.uiuc.edu/PR511">[cbackend] C backend does not
151 respect 'volatile'</a></li>
152</ol>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]153
Chris Lattner1c75b252005-02-14 16:57:55 +0000[diff] [blame]154<p>Bugs in the C/C++ front-end:</p>
Chris Lattnerba7bd472003-12-06 20:22:41 +0000[diff] [blame]155<ol>
Chris Lattnere1329f42005-01-03 04:20:21 +0000[diff] [blame]156 <li><a href="http://llvm.cs.uiuc.edu/PR487">[llvmgcc] llvm-gcc incorrectly
157 rejects some constant initializers involving the addresses of array
158 elements</a></li>
Chris Lattner2a38aea2005-02-11 19:29:52 +0000[diff] [blame]159 <li><a href="http://llvm.cs.uiuc.edu/PR501">[llvm-g++] Crash compiling
160 anonymous union</a></li>
Chris Lattner1c75b252005-02-14 16:57:55 +0000[diff] [blame]161 <li><a href="http://llvm.cs.uiuc.edu/PR509">[llvm-g++] Do not use dynamic
162 initialization where static init will do</a></li>
Chris Lattner1f031b22005-02-15 05:28:06 +0000[diff] [blame]163 <li><a href="http://llvm.cs.uiuc.edu/PR510">[llvmgcc] Field offset
164 miscalculated for some structure fields following bit fields</a></li>
Brian Gaeke730d8d62004-08-24 07:43:48 +0000[diff] [blame]165</ol>
166
Chris Lattner21a90402004-05-24 04:50:25 +0000[diff] [blame]167</div>
Reid Spencer3e58f582004-05-23 17:23:13 +0000[diff] [blame]168
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]169<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]170<div class="doc_section">
171 <a name="portability">Portability and Supported Platforms</a>
172</div>
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]173<!-- *********************************************************************** -->
174
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]175<div class="doc_text">
176
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]177<p>LLVM is known to work on the following platforms:</p>
Chris Lattner2c7b0872004-06-01 18:22:41 +0000[diff] [blame]178
179<ul>
180<li>Intel and AMD machines running Red Hat Linux and FreeBSD (and probably
181 other unix-like systems).</li>
182<li>Sun UltraSPARC workstations running Solaris 8.</li>
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]183<li>Intel and AMD machines running on Win32 with the Cygwin libraries (limited
184 support is available for native builds with Visual C++).</li>
185<li>PowerPC-based Mac OS X systems, running 10.2 and above.</li>
Chris Lattner2c7b0872004-06-01 18:22:41 +0000[diff] [blame]186</ul>
187
Brian Gaekee3e557e2004-05-09 05:28:35 +0000[diff] [blame]188<p>The core LLVM infrastructure uses
189<a href="http://www.gnu.org/software/autoconf/">GNU autoconf</a> to adapt itself
190to the machine and operating system on which it is built. However, minor
191porting may be required to get LLVM to work on new platforms. We welcome your
192portability patches and reports of successful builds or error messages.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]193
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]194</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]195
196<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]197<div class="doc_section">
198 <a name="knownproblems">Known Problems</a>
199</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]200<!-- *********************************************************************** -->
201
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]202<div class="doc_text">
203
204<p>This section contains all known problems with the LLVM system, listed by
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]205component. As new problems are discovered, they will be added to these
Chris Lattnerb84f3322003-12-12 21:22:16 +0000[diff] [blame]206sections. If you run into a problem, please check the <a
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]207href="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]208there isn't already one.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]209
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]210</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]211
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]212<!-- ======================================================================= -->
213<div class="doc_subsection">
214 <a name="experimental">Experimental features included with this release</a>
215</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]216
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]217<div class="doc_text">
218
Misha Brukmanfa50a222004-05-12 21:46:05 +0000[diff] [blame]219<p>The following components of this LLVM release are either untested, known to
220be broken or unreliable, or are in early development. These components should
221not be relied on, and bugs should not be filed against them, but they may be
222useful to some people. In particular, if you would like to work on one of these
223components, please contact us on the llvmdev list.</p>
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]224
225<ul>
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]226<li>The following passes are incomplete or buggy, and may be removed in future
Chris Lattner38389b12005-01-28 06:13:52 +0000[diff] [blame]227 releases: <tt>-cee, -branch-combine, -instloops, -paths, -pre</tt></li>
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]228<li>The <tt>llvm-db</tt> tool is in a very early stage of development, but can
229 be used to step through programs and inspect the stack.</li>
Chris Lattnerfa835102004-12-02 17:20:17 +0000[diff] [blame]230<li>The "iterative scan" register allocator (enabled with -regalloc=iterativescan)
231 is not stable.</li>
Chris Lattnere14babd2005-02-13 22:27:24 +0000[diff] [blame]232<li>The SparcV8 and Alpha ports are experimental.</li>
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]233</ul>
234
235</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]236
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]237<!-- ======================================================================= -->
238<div class="doc_subsection">
239 <a name="core">Known problems with the LLVM Core</a>
240</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]241
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]242<div class="doc_text">
243
244<ul>
Reid Spencer493d9c22004-11-25 22:38:30 +0000[diff] [blame]245 <li>In the JIT, <tt>dlsym</tt> on a symbol compiled by the JIT will not work.
246 </li>
247 <li>The JIT does not use mutexes to protect its internal data structures. As
248 such, execution of a threaded program could cause these data structures to be
249 corrupted.
250 </li>
Reid Spencer493d9c22004-11-25 22:38:30 +0000[diff] [blame]251 <li><a href="http://llvm.cs.uiuc.edu/PR240">The lower-invoke pass does not
252 mark values live across a setjmp as volatile</a>. This missing feature
253 only affects targets whose setjmp/longjmp libraries do not save and restore
254 the entire register file.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]255</ul>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]256</div>
257
258<!-- ======================================================================= -->
259<div class="doc_subsection">
260 <a name="c-fe">Known problems with the C front-end</a>
261</div>
Chris Lattner178f3db2003-10-02 05:07:23 +0000[diff] [blame]262
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]263<!-- _______________________________________________________________________ -->
Chris Lattner5a8a7282003-12-14 05:03:43 +0000[diff] [blame]264<div class="doc_subsubsection">Bugs</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]265
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]266<div class="doc_text">
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]267<ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]268<li>C99 Variable sized arrays do not release stack memory when they go out of
269 scope. Thus, the following program may run out of stack space:
270<pre>
271 for (i = 0; i != 1000000; ++i) {
272 int X[n];
273 foo(X);
274 }
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]275</pre></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]276
Misha Brukmanfa50a222004-05-12 21:46:05 +0000[diff] [blame]277<li>Initialization of global union variables can only be done <a
Misha Brukman68ef9a92004-12-04 00:45:09 +0000[diff] [blame]278href="http://llvm.cs.uiuc.edu/PR162">with the largest union member</a>.</li>
Chris Lattner1ab58dd2004-03-16 21:39:04 +0000[diff] [blame]279
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]280</ul>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]281</div>
282
283<!-- _______________________________________________________________________ -->
284<div class="doc_subsubsection">
285 Notes
286</div>
287
288<div class="doc_text">
289
290<ul>
291
292<li>Inline assembly is not yet supported.</li>
Chris Lattnerd2a74272003-10-27 18:30:37 +0000[diff] [blame]293
294<li>"long double" is transformed by the front-end into "double". There is no
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]295support for floating point data types of any size other than 32 and 64
296bits.</li>
297
298<li>The following Unix system functionality has not been tested and may not
299work:
Misha Brukman7cb4e382003-11-22 01:00:11 +0000[diff] [blame]300 <ol>
301 <li><tt>sigsetjmp</tt>, <tt>siglongjmp</tt> - These are not turned into the
302 appropriate <tt>invoke</tt>/<tt>unwind</tt> instructions. Note that
303 <tt>setjmp</tt> and <tt>longjmp</tt> <em>are</em> compiled correctly.
304 <li><tt>getcontext</tt>, <tt>setcontext</tt>, <tt>makecontext</tt>
305 - These functions have not been tested.
306 </ol></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]307
308<li>Although many GCC extensions are supported, some are not. In particular,
309 the following extensions are known to <b>not be</b> supported:
310 <ol>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]311 <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]312 <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>
313 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Constructing-Calls.html#Constructing%20Calls">Constructing Calls</a>: Dispatching a call to another function.</li>
314 <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]315 <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]316 <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>
317 <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]318 <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>
319 <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]320 <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]321 <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]322 </ol>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]323
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]324 <p>The following GCC extensions are <b>partially</b> supported. An ignored
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]325 attribute means that the LLVM compiler ignores the presence of the attribute,
326 but the code should still work. An unsupported attribute is one which is
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]327 ignored by the LLVM compiler and will cause a different interpretation of
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]328 the program.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]329
330 <ol>
331 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html#Variable%20Length">Variable Length</a>:
332 Arrays whose length is computed at run time.<br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]333 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]334
335 <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]336
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]337 Declaring that functions have no side effects or that they can never
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]338 return.<br>
339
340 <b>Supported:</b> <tt>format</tt>, <tt>format_arg</tt>, <tt>non_null</tt>,
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]341 <tt>noreturn</tt>, <tt>constructor</tt>, <tt>destructor</tt>,
342 <tt>unused</tt>,
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]343 <tt>deprecated</tt>, <tt>warn_unused_result</tt>, <tt>weak</tt><br>
344
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]345 <b>Ignored:</b> <tt>noinline</tt>,
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]346 <tt>always_inline</tt>, <tt>pure</tt>, <tt>const</tt>, <tt>nothrow</tt>,
347 <tt>malloc</tt>, <tt>no_instrument_function</tt>, <tt>cdecl</tt><br>
348
349 <b>Unsupported:</b> <tt>used</tt>, <tt>section</tt>, <tt>alias</tt>,
350 <tt>visibility</tt>, <tt>regparm</tt>, <tt>stdcall</tt>,
351 <tt>fastcall</tt>, all other target specific attributes</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]352
353 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Variable-Attributes.html#Variable%20Attributes">Variable Attributes</a>:
354 Specifying attributes of variables.<br>
355 <b>Supported:</b> <tt>cleanup</tt>, <tt>common</tt>, <tt>nocommon</tt>,
356 <tt>deprecated</tt>, <tt>transparent_union</tt>,
357 <tt>unused</tt>, <tt>weak</tt><br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]358
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]359 <b>Unsupported:</b> <tt>aligned</tt>, <tt>mode</tt>, <tt>packed</tt>,
360 <tt>section</tt>, <tt>shared</tt>, <tt>tls_model</tt>,
361 <tt>vector_size</tt>, <tt>dllimport</tt>,
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]362 <tt>dllexport</tt>, all target specific attributes.</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]363
Misha Brukman8395d732003-12-12 04:37:31 +0000[diff] [blame]364 <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]365 <b>Supported:</b> <tt>transparent_union</tt>, <tt>unused</tt>,
Misha Brukman8395d732003-12-12 04:37:31 +0000[diff] [blame]366 <tt>deprecated</tt>, <tt>may_alias</tt><br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]367
368 <b>Unsupported:</b> <tt>aligned</tt>, <tt>packed</tt>,
369 all target specific attributes.</li>
370
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]371 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html#Other%20Builtins">Other Builtins</a>:
372 Other built-in functions.<br>
373 We support all builtins which have a C language equivalent (e.g.,
374 <tt>__builtin_cos</tt>), <tt>__builtin_alloca</tt>,
375 <tt>__builtin_types_compatible_p</tt>, <tt>__builtin_choose_expr</tt>,
Chris Lattnerb7c4bac2004-06-18 06:26:29 +0000[diff] [blame]376 <tt>__builtin_constant_p</tt>, and <tt>__builtin_expect</tt>
377 (currently ignored). We also support builtins for ISO C99 floating
378 point comparison macros (e.g., <tt>__builtin_islessequal</tt>).</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]379 </ol>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]380
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]381 <p>The following extensions <b>are</b> known to be supported:</p>
382
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]383 <ol>
Chris Lattnerd3dc8502004-03-16 08:54:07 +0000[diff] [blame]384 <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]385 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html#Statement%20Exprs">Statement Exprs</a>: Putting statements and declarations inside expressions.</li>
386 <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]387 <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]388 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Conditionals.html#Conditionals">Conditionals</a>: Omitting the middle operand of a <code>?:</code> expression.</li>
389 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Long-Long.html#Long%20Long">Long Long</a>: Double-word integers.</li>
390 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Complex.html#Complex">Complex</a>: Data types for complex numbers.</li>
391 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Hex-Floats.html#Hex%20Floats">Hex Floats</a>:Hexadecimal floating-point constants.</li>
392 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html#Zero%20Length">Zero Length</a>: Zero-length arrays.</li>
393 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Empty-Structures.html#Empty%20Structures">Empty Structures</a>: Structures with no members.</li>
394 <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>
395 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Escaped-Newlines.html#Escaped%20Newlines">Escaped Newlines</a>: Slightly looser rules for escaped newlines.</li>
396 <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]397 <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]398 <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]399 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Compound-Literals.html#Compound%20Literals">Compound Literals</a>: Compound literals give structures, unions,
400or arrays as values.</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]401 <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]402 <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]403 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Case-Ranges.html#Case%20Ranges">Case Ranges</a>: `case 1 ... 9' and such.</li>
404 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html#Mixed%20Declarations">Mixed Declarations</a>: Mixing declarations and code.</li>
405 <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]406 <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]407 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Dollar-Signs.html#Dollar%20Signs">Dollar Signs</a>: Dollar sign is allowed in identifiers.</li>
408 <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>
409 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Alignment.html#Alignment">Alignment</a>: Inquiring about the alignment of a type or variable.</li>
410 <li><a href="http://gcc.gnu.org/onlinedocs/gcc/Inline.html#Inline">Inline</a>: Defining inline functions (as fast as macros).</li>
411 <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>
412 <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>
413 <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]414 <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]415 <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>
416 <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]417 </ol></li>
418
419</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]420
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]421<p>If you run into GCC extensions which have not been included in any of these
422lists, please let us know (also including whether or not they work).</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]423
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]424</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]425
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]426<!-- ======================================================================= -->
427<div class="doc_subsection">
428 <a name="c++-fe">Known problems with the C++ front-end</a>
429</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]430
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]431<div class="doc_text">
432
Reid Spencer55684c32004-12-07 08:39:08 +0000[diff] [blame]433<p>For this release, the C++ front-end is considered to be fully
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]434tested and works for a number of non-trivial programs, including LLVM
435itself.</p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]436
437</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]438
439<!-- _______________________________________________________________________ -->
Chris Lattner141ebb62004-02-14 04:12:41 +0000[diff] [blame]440<div class="doc_subsubsection">Bugs</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]441
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]442<div class="doc_text">
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]443
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]444<ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]445<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]446 front-end</a>.</li>
Chris Lattner041e6c92004-07-17 02:04:41 +0000[diff] [blame]447
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]448<li><b>IA-64 specific</b>: The C++ front-end does not use <a
449href="http://llvm.cs.uiuc.edu/PR406">IA64 ABI compliant layout of v-tables</a>.
Chris Lattner041e6c92004-07-17 02:04:41 +0000[diff] [blame]450In particular, it just stores function pointers instead of function
451descriptors in the vtable. This bug prevents mixing C++ code compiled with
Chris Lattner2fd93492004-08-02 20:29:51 +0000[diff] [blame]452LLVM with C++ objects compiled by other C++ compilers.</li>
Chris Lattner041e6c92004-07-17 02:04:41 +0000[diff] [blame]453
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]454</ul>
455
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]456</div>
457
458<!-- _______________________________________________________________________ -->
459<div class="doc_subsubsection">
460 Notes
461</div>
462
463<div class="doc_text">
464
465<ul>
Chris Lattnerd2a74272003-10-27 18:30:37 +0000[diff] [blame]466
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]467<li>The C++ front-end is based on a pre-release of the GCC 3.4 C++ parser. This
468parser is significantly more standards compliant (and picky) than prior GCC
469versions. For more information, see the C++ section of the <a
Chris Lattnere76e9ab2003-12-12 04:25:33 +0000[diff] [blame]470href="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]471
472<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]473 performed. In particular, destructors for objects in the <tt>longjmp</tt>ing
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]474 function and in the <tt>setjmp</tt> receiver function may not be run.
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]475 Objects in intervening stack frames will be destroyed, however (which is
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]476 better than most compilers).</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]477
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]478<li>The LLVM C++ front-end follows the <a
479 href="http://www.codesourcery.com/cxx-abi">Itanium C++ ABI</a>.
480 This document, which is not Itanium specific, specifies a standard for name
481 mangling, class layout, v-table layout, RTTI formats, and other C++
482 representation issues. Because we use this API, code generated by the LLVM
483 compilers should be binary compatible with machine code generated by other
484 Itanium ABI C++ compilers (such as G++, the Intel and HP compilers, etc).
485 <i>However</i>, the exception handling mechanism used by LLVM is very
486 different from the model used in the Itanium ABI, so <b>exceptions will not
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]487 interact correctly</b>. </li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]488
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]489</ul>
Chris Lattner46ecf612003-10-07 22:14:37 +0000[diff] [blame]490
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]491</div>
492
493<!-- ======================================================================= -->
494<div class="doc_subsection">
495 <a name="x86-be">Known problems with the X86 back-end</a>
496</div>
497
498<div class="doc_text">
499
500<ul>
Chris Lattner5cd40922004-08-02 20:28:44 +0000[diff] [blame]501 <li>none yet</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]502</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]503
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]504</div>
505
506<!-- ======================================================================= -->
507<div class="doc_subsection">
Misha Brukmana516e992004-07-12 16:55:41 +0000[diff] [blame]508 <a name="sparcv9-be">Known problems with the SparcV9 back-end</a>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]509</div>
510
511<div class="doc_text">
512
513<ul>
Misha Brukmana516e992004-07-12 16:55:41 +0000[diff] [blame]514<li><a href="http://llvm.cs.uiuc.edu/PR60">[sparcv9] SparcV9 backend miscompiles
515several programs in the LLVM test suite</a></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]516</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]517
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]518</div>
519
520<!-- ======================================================================= -->
521<div class="doc_subsection">
Chris Lattnerdf925ce2004-11-07 01:55:32 +0000[diff] [blame]522 <a name="ppc-be">Known problems with the PowerPC back-end</a>
523</div>
524
525<div class="doc_text">
526
527<ul>
528<li>none yet</li>
529</ul>
530
531</div>
532
533<!-- ======================================================================= -->
534<div class="doc_subsection">
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]535 <a name="c-be">Known problems with the C back-end</a>
536</div>
537
538<div class="doc_text">
539
540<ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]541
542<li>The C back-end produces code that violates the ANSI C Type-Based Alias
543Analysis rules. As such, special options may be necessary to compile the code
544(for example, GCC requires the <tt>-fno-strict-aliasing</tt> option). This
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]545problem probably cannot be fixed.</li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]546
Chris Lattnerc679fbb2003-11-04 20:06:53 +0000[diff] [blame]547<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]548supported</a>. This should not affect LLVM produced by the C or C++
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]549frontends.</li>
Chris Lattnerb28c3282003-10-24 04:03:19 +0000[diff] [blame]550
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]551</ul>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]552
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]553</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]554
555<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]556<div class="doc_section">
557 <a name="additionalinfo">Additional Information</a>
558</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]559<!-- *********************************************************************** -->
560
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]561<div class="doc_text">
562
563<p>A wide variety of additional information is available on the LLVM web page,
John Criswell86a3a482003-12-18 16:43:17 +0000[diff] [blame]564including mailing lists and publications describing algorithms and components
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]565implemented in LLVM. The web page also contains versions of the API
566documentation which is up-to-date with the CVS version of the source code. You
567can access versions of these documents specific to this release by going into
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]568the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]569
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]570<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]571us via the <a href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">mailing
572lists</a>.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]573
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]574</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]575
576<!-- *********************************************************************** -->
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]577
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]578<hr>
Misha Brukman68aab3b2003-11-22 01:23:39 +0000[diff] [blame]579<address>
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584
Misha Brukman7cb4e382003-11-22 01:00:11 +0000[diff] [blame]585 <a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a><br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]586 Last modified: $Date$
Misha Brukman68aab3b2003-11-22 01:23:39 +0000[diff] [blame]587</address>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]588
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]589</body>
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