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gerrit-public.fairphone.software / toolchain / llvm-project / 966fd26c83bb83ae50c4820c9fee9168f6f1fb77 / . / llvm / docs / ReleaseNotes.html
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Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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3<html>
4<head>
Reid Spencere4190fa2004-11-18 18:38:58 +0000[diff] [blame]5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]6 <link rel="stylesheet" href="llvm.css" type="text/css">
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]7 <title>LLVM 2.5 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 Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]11<div class="doc_title">LLVM 2.5 Release Notes</div>
Mikhail Glushenkov024f7cf2008-10-13 02:08:34 +0000[diff] [blame]12
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]13<ol>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]14 <li><a href="#intro">Introduction</a></li>
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]15 <li><a href="#subproj">Sub-project Status Update</a></li>
16 <li><a href="#whatsnew">What's New in LLVM?</a></li>
Chris Lattner77a51732004-04-30 22:17:12 +0000[diff] [blame]17 <li><a href="GettingStarted.html">Installation Instructions</a></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]18 <li><a href="#portability">Portability and Supported Platforms</a></li>
Dan Gohmanad888912008-10-14 16:23:02 +0000[diff] [blame]19 <li><a href="#knownproblems">Known Problems</a></li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]20 <li><a href="#additionalinfo">Additional Information</a></li>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]21</ol>
22
Chris Lattner020e1fc2004-05-23 21:07:27 +0000[diff] [blame]23<div class="doc_author">
Dan Gohmanad888912008-10-14 16:23:02 +0000[diff] [blame]24 <p>Written by the <a href="http://llvm.org">LLVM Team</a></p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]25</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]26
27<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]28<div class="doc_section">
29 <a name="intro">Introduction</a>
30</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]31<!-- *********************************************************************** -->
32
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]33<div class="doc_text">
34
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]35<p>This document contains the release notes for the LLVM Compiler
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]36Infrastructure, release 2.5. Here we describe the status of LLVM, including
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]37major improvements from the previous release and significant known problems.
38All LLVM releases may be downloaded from the <a
39href="http://llvm.org/releases/">LLVM releases web site</a>.</p>
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]40
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]41<p>For more information about LLVM, including information about the latest
Chris Lattnera69595e2005-10-29 07:07:09 +0000[diff] [blame]42release, please check out the <a href="http://llvm.org/">main LLVM
Chris Lattnere7525b52003-10-07 21:38:31 +0000[diff] [blame]43web site</a>. If you have questions or comments, the <a
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]44href="http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM Developer's Mailing
45List</a> is a good place to send them.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]46
Mikhail Glushenkov024f7cf2008-10-13 02:08:34 +0000[diff] [blame]47<p>Note that if you are reading this file from a Subversion checkout or the
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]48main LLVM web page, this document applies to the <i>next</i> release, not the
Gabor Greif355f81c2008-10-14 11:00:32 +0000[diff] [blame]49current one. To see the release notes for a specific release, please see the
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]50<a href="http://llvm.org/releases/">releases page</a>.</p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]51
52</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]53
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]54<!-- Unfinished features in 2.5:
Chris Lattner2b8a52e2008-02-10 07:46:44 +0000[diff] [blame]55 Machine LICM
56 Machine Sinking
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]57 target-specific intrinsics
58 gold lto plugin
Chris Lattner3ab27b72009-02-25 07:32:53 +0000[diff] [blame]59 pre-alloc splitter, strong phi elim
Chris Lattnerc4d68542008-10-12 19:47:48 +0000[diff] [blame]60 llc -enable-value-prop, propagation of value info (sign/zero ext info) from
61 one MBB to another
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]62 debug info for optimized code
Chris Lattner3ab27b72009-02-25 07:32:53 +0000[diff] [blame]63
Chris Lattner2b8a52e2008-02-10 07:46:44 +0000[diff] [blame]64 -->
Mikhail Glushenkov024f7cf2008-10-13 02:08:34 +0000[diff] [blame]65
Chris Lattnerc4d68542008-10-12 19:47:48 +0000[diff] [blame]66 <!-- for announcement email:
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]67 -->
Chris Lattner2b8a52e2008-02-10 07:46:44 +0000[diff] [blame]68
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]69<!-- *********************************************************************** -->
70<div class="doc_section">
71 <a name="subproj">Sub-project Status Update</a>
Chris Lattner625a3d82008-06-08 21:34:41 +0000[diff] [blame]72</div>
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]73<!-- *********************************************************************** -->
Chris Lattner625a3d82008-06-08 21:34:41 +0000[diff] [blame]74
75<div class="doc_text">
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]76<p>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]77The LLVM 2.5 distribution currently consists of code from the core LLVM
Chris Lattner44c09cd2008-10-13 18:11:54 +0000[diff] [blame]78repository (which roughly includes the LLVM optimizers, code generators and
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]79supporting tools) and the llvm-gcc repository. In addition to this code, the
80LLVM Project includes other sub-projects that are in development. The two which
Chris Lattnerd8b33e02008-10-11 18:18:28 +0000[diff] [blame]81are the most actively developed are the <a href="#clang">Clang Project</a> and
Nicolas Geoffraye5ec9322008-10-14 19:23:04 +0000[diff] [blame]82the <a href="#vmkit">VMKit Project</a>.
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]83</p>
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]84
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]85</div>
86
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]87
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]88<!--=========================================================================-->
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]89<div class="doc_subsection">
Chris Lattner44c09cd2008-10-13 18:11:54 +0000[diff] [blame]90<a name="clang">Clang: C/C++/Objective-C Frontend Toolkit</a>
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]91</div>
92
93<div class="doc_text">
94
95<p>The <a href="http://clang.llvm.org/">Clang project</a> is an effort to build
96a set of new 'LLVM native' front-end technologies for the LLVM optimizer
Chris Lattnerf70a0242009-02-25 05:09:54 +0000[diff] [blame]97and code generator. While Clang is not included in the LLVM 2.5 release, it
98is continuing to make major strides forward in all areas. Its C and Objective-C
99parsing and code generation support is now very solid. For example, it is
100capable of successfully building many real applications for X86-32 and X86-64,
101including the FreeBSD kernel. C++ is also making <a
102href="http://clang.llvm.org/cxx_status.html">incredible progress</a>, and work
103on templates has recently started.</p>
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]104
Chris Lattnerf70a0242009-02-25 05:09:54 +0000[diff] [blame]105<p>While Clang is not yet production quality, it is progressing very nicely and
106is quite usable for building many C and Objective-C applications. If you are
107interested in fast compiles and good diagnostics, we encourage you to try it out
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]108by <a href="http://clang.llvm.org/get_started.html">building from mainline</a>
Chris Lattnerf70a0242009-02-25 05:09:54 +0000[diff] [blame]109and reporting any issues you hit to the <a
110href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev">Clang front-end mailing
111list</a>.</p>
112
113<p>In the LLVM 2.5 time-frame, the Clang team has made many improvements:</p>
Bill Wendlingef362462008-10-27 09:27:33 +0000[diff] [blame]114
Daniel Dunbarc11b40f2008-10-14 23:25:09 +0000[diff] [blame]115<ul>
Chris Lattnerf70a0242009-02-25 05:09:54 +0000[diff] [blame]116<li>Clang now has a new driver, which is focused on providing a GCC-compatible
117 interface.</li>
118<li>The X86-64 ABI is now supported.</li>
119<li>Precompiled header support is now implemented.</li>
120<li>Objective-C support is significantly improved beyond LLVM 2.4, supporting
121 many features, such as Objective-C Garbage Collection.</li>
122<li>Many many bugs are fixed.</li>
Chris Lattner44c09cd2008-10-13 18:11:54 +0000[diff] [blame]123</div>
124
125<!--=========================================================================-->
126<div class="doc_subsection">
127<a name="clangsa">Clang Static Analyzer</a>
128</div>
129
130<div class="doc_text">
131
Ted Kremenek3db01842008-10-14 05:14:21 +0000[diff] [blame]132<p>The Clang project also includes an early stage static source code analysis
133tool for <a href="http://clang.llvm.org/StaticAnalysis.html">automatically
134finding bugs</a> in C and Objective-C programs. The tool performs a growing set
Chris Lattner05972292008-10-14 06:02:29 +0000[diff] [blame]135of checks to find bugs that occur on a specific path within a program. Examples
Ted Kremenek3db01842008-10-14 05:14:21 +0000[diff] [blame]136of bugs the tool finds include logic errors such as null dereferences,
137violations of various API rules, dead code, and potential memory leaks in
Chris Lattner05972292008-10-14 06:02:29 +0000[diff] [blame]138Objective-C programs. Since its inception, public feedback on the tool has been
139extremely positive, and conservative estimates put the number of real bugs it
140has found in industrial-quality software on the order of thousands.</p>
Chris Lattnerbcffa5a2008-10-14 00:52:49 +0000[diff] [blame]141
Ted Kremenek3db01842008-10-14 05:14:21 +0000[diff] [blame]142<p>The tool also provides a simple web GUI to inspect potential bugs found by
Chris Lattner05972292008-10-14 06:02:29 +0000[diff] [blame]143the tool. While still early in development, the GUI illustrates some of the key
Ted Kremenek3db01842008-10-14 05:14:21 +0000[diff] [blame]144features of Clang: accurate source location information, which is used by the
145GUI to highlight specific code expressions that relate to a bug (including those
Bill Wendlingef362462008-10-27 09:27:33 +0000[diff] [blame]146that span multiple lines); and built-in knowledge of macros, which is used to
Ted Kremenek3db01842008-10-14 05:14:21 +0000[diff] [blame]147perform inline expansion of macros within the GUI itself.</p>
148
Chris Lattner05972292008-10-14 06:02:29 +0000[diff] [blame]149<p>The set of checks performed by the static analyzer is gradually expanding,
Bill Wendlingef362462008-10-27 09:27:33 +0000[diff] [blame]150and future plans for the tool include full source-level inter-procedural
151analysis and deeper checks such as buffer overrun detection. There are many
152opportunities to extend and enhance the static analyzer, and anyone interested
153in working on this project is encouraged to get involved!</p>
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]154
155</div>
156
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]157<!--=========================================================================-->
158<div class="doc_subsection">
Nicolas Geoffraye5ec9322008-10-14 19:23:04 +0000[diff] [blame]159<a name="vmkit">VMKit: JVM/CLI Virtual Machine Implementation</a>
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]160</div>
161
162<div class="doc_text">
163<p>
Nicolas Geoffraye5ec9322008-10-14 19:23:04 +0000[diff] [blame]164The <a href="http://vmkit.llvm.org/">VMKit project</a> is an implementation of
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]165a JVM and a CLI Virtual Machines (Microsoft .NET is an
166implementation of the CLI) using the Just-In-Time compiler of LLVM.</p>
167
Chris Lattnerb39faaa2009-02-25 05:45:05 +0000[diff] [blame]168<p>Following LLVM 2.5, VMKit has its first release ? that you can find on its
Nicolas Geoffray54efd492008-10-15 20:25:04 +0000[diff] [blame]169<a href="http://vmkit.llvm.org/releases/">webpage</a>. The release includes
170bug fixes, cleanup and new features. The major changes are:</p>
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]171
Nicolas Geoffraye5ec9322008-10-14 19:23:04 +0000[diff] [blame]172<ul>
173
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]174<li>?</li>
Nicolas Geoffraye5ec9322008-10-14 19:23:04 +0000[diff] [blame]175
176</ul>
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]177</div>
178
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]179
180<!-- *********************************************************************** -->
181<div class="doc_section">
Chris Lattnerf5cd9862008-10-13 18:01:01 +0000[diff] [blame]182 <a name="whatsnew">What's New in LLVM?</a>
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]183</div>
184<!-- *********************************************************************** -->
185
Chris Lattnerb7bc2aa2008-06-08 22:59:35 +0000[diff] [blame]186<div class="doc_text">
187
Bill Wendlingef362462008-10-27 09:27:33 +0000[diff] [blame]188<p>This release includes a huge number of bug fixes, performance tweaks, and
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]189minor improvements. Some of the major improvements and new features are listed
190in this section.
Chris Lattnerb7bc2aa2008-06-08 22:59:35 +0000[diff] [blame]191</p>
192</div>
193
Chris Lattnerc75fd522008-06-08 21:58:17 +0000[diff] [blame]194<!--=========================================================================-->
Chris Lattner625a3d82008-06-08 21:34:41 +0000[diff] [blame]195<div class="doc_subsection">
Chris Lattnercdc44ed2008-02-06 18:00:06 +0000[diff] [blame]196<a name="majorfeatures">Major New Features</a>
197</div>
198
199<div class="doc_text">
200
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]201<p>LLVM 2.5 includes several major new capabilities:</p>
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]202
203<ul>
Duncan Sandsd9c35572009-02-25 11:37:39 +0000[diff] [blame]204<li><p>The code generator now supports arbitrary precision integers.
205Types like <tt>i33</tt> have long been valid in the LLVM IR, but previously
206could only be used with the interpreter.
207Now IR using such types can be compiled to native code on all targets.
208All operations are supported if the integer is not bigger than twice the
209target machine word size.
210Simple operations like loads, stores and shifts by a constant amount are
211supported for integers of any size.
212</p></li>
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]213
214<!--
215Random stuff:
216
Chris Lattner3ab27b72009-02-25 07:32:53 +0000[diff] [blame]217xcore backend!
218fortran on darwin!
219
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]220.ll parser rewrite.
221GCC inliner off.
222cmake mature?
223x86 backend FS/GS segment address spaces?
224nocapture
225memdep is faster / more aggressive.
Chris Lattner3ab27b72009-02-25 07:32:53 +0000[diff] [blame]226how to write a backend doc docs/WritingAnLLVMBackend.html
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]227fastisel + exception handling
228vector widening <3 x float> -> <4 x float>
Chris Lattner3ab27b72009-02-25 07:32:53 +0000[diff] [blame]229arm port improvements? arm jit encoding stuff, constant island support?
230JIT TLS support on x86
231mem2reg now faster on code with huge basic blocks
232stack protectors/stack canaries, -fstack-protector, controllable on a
233 per-function basis with attributes.
234shufflevector is generalized to allow different shuffle mask width than its
235 input vectors.
236loop optimizer improves floating point induction variables
237llvm/Analysis/DebugInfo.h classes, llvm-gcc and clang and codegen use them.
238asmprinters seperate from targets for jits
Chris Lattnerd02da042009-02-25 06:34:50 +0000[diff] [blame]239-->
Chris Lattner618a99f2008-06-05 06:57:39 +0000[diff] [blame]240
Chris Lattner458e79f2008-02-10 08:18:42 +0000[diff] [blame]241</ul>
242
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]243</div>
244
Chris Lattnerb7112222008-06-05 06:25:56 +0000[diff] [blame]245
246<!--=========================================================================-->
247<div class="doc_subsection">
Chris Lattner625a3d82008-06-08 21:34:41 +0000[diff] [blame]248<a name="llvm-gcc">llvm-gcc 4.2 Improvements</a>
Chris Lattnerb7112222008-06-05 06:25:56 +0000[diff] [blame]249</div>
250
251<div class="doc_text">
252
Chris Lattner591ef272008-10-13 20:47:20 +0000[diff] [blame]253<p>LLVM fully supports the llvm-gcc 4.2 front-end, which marries the GCC
254front-ends and driver with the LLVM optimizer and code generator. It currently
255includes support for the C, C++, Objective-C, Ada, and Fortran front-ends.</p>
Chris Lattnerb7112222008-06-05 06:25:56 +0000[diff] [blame]256
Chris Lattnerb7bc2aa2008-06-08 22:59:35 +0000[diff] [blame]257<ul>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]258<li>?</li>
Gabor Greif7f39fb52008-06-09 06:06:18 +0000[diff] [blame]259</ul>
Chris Lattnerb7112222008-06-05 06:25:56 +0000[diff] [blame]260
Chris Lattnerb7112222008-06-05 06:25:56 +0000[diff] [blame]261</div>
262
263
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]264<!--=========================================================================-->
265<div class="doc_subsection">
Chris Lattnerdd6acc02008-02-10 08:17:19 +0000[diff] [blame]266<a name="coreimprovements">LLVM Core Improvements</a>
267</div>
268
269<div class="doc_text">
Bill Wendlingef362462008-10-27 09:27:33 +0000[diff] [blame]270<p>New features include:</p>
Chris Lattnerdd6acc02008-02-10 08:17:19 +0000[diff] [blame]271
Chris Lattnerb7112222008-06-05 06:25:56 +0000[diff] [blame]272<ul>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]273<li>?</li>
Chris Lattner0327f0b2008-10-13 20:59:32 +0000[diff] [blame]274
Chris Lattnerdd6acc02008-02-10 08:17:19 +0000[diff] [blame]275</ul>
Mikhail Glushenkov024f7cf2008-10-13 02:08:34 +0000[diff] [blame]276
Chris Lattnerdd6acc02008-02-10 08:17:19 +0000[diff] [blame]277</div>
278
279<!--=========================================================================-->
280<div class="doc_subsection">
Chris Lattner2b8a52e2008-02-10 07:46:44 +0000[diff] [blame]281<a name="optimizer">Optimizer Improvements</a>
282</div>
283
284<div class="doc_text">
285
Chris Lattner25879d72008-10-13 21:50:36 +0000[diff] [blame]286<p>In addition to a huge array of bug fixes and minor performance tweaks, this
287release includes a few major enhancements and additions to the optimizers:</p>
Chris Lattner2b8a52e2008-02-10 07:46:44 +0000[diff] [blame]288
289<ul>
290
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]291<li>?</li>
Chris Lattner25879d72008-10-13 21:50:36 +0000[diff] [blame]292
Chris Lattner7795ea92008-06-08 02:45:07 +0000[diff] [blame]293</ul>
294
295</div>
296
297<!--=========================================================================-->
298<div class="doc_subsection">
299<a name="codegen">Code Generator Improvements</a>
300</div>
301
302<div class="doc_text">
303
Gabor Greif20564a02008-10-14 11:31:14 +0000[diff] [blame]304<p>We have put a significant amount of work into the code generator infrastructure,
Chris Lattner7795ea92008-06-08 02:45:07 +0000[diff] [blame]305which allows us to implement more aggressive algorithms and make it run
306faster:</p>
307
308<ul>
Duncan Sands966fd262009-02-25 11:50:08 +0000[diff] [blame^]309<li>The type legalization logic has been completely rewritten, and is now
310more powerful (it supports arbitrary precision integer types for example)
311and hopefully more correct.
312The type legalizer converts operations on types that are not natively
313supported by the target machine into equivalent code sequences that only use
314natively supported types.
315The old type legalizer is still available and will be used if
316<tt>-disable-legalize-types</tt> is passed to <tt>llc</tt>.
317</li>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]318<li>?</li>
Chris Lattner7795ea92008-06-08 02:45:07 +0000[diff] [blame]319
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]320</ul>
321
322</div>
323
324
325<!--=========================================================================-->
326<div class="doc_subsection">
Chris Lattner934e2d42008-10-13 22:06:31 +0000[diff] [blame]327<a name="targetspecific">Target Specific Improvements</a>
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]328</div>
Chris Lattner727c3742007-05-18 06:33:02 +0000[diff] [blame]329
Chris Lattner89e761c2006-04-18 06:32:08 +0000[diff] [blame]330<div class="doc_text">
Chris Lattnerdd6acc02008-02-10 08:17:19 +0000[diff] [blame]331<p>New target-specific features include:
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]332</p>
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]333
334<ul>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]335<li>?</li>
Chris Lattner6cb64032008-06-05 08:02:49 +0000[diff] [blame]336</ul>
Chris Lattner6cb64032008-06-05 08:02:49 +0000[diff] [blame]337
Mikhail Glushenkov024f7cf2008-10-13 02:08:34 +0000[diff] [blame]338</div>
Chris Lattner6cb64032008-06-05 08:02:49 +0000[diff] [blame]339
340
341<!--=========================================================================-->
342<div class="doc_subsection">
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]343<a name="otherimprovements">Other Improvements</a>
344</div>
345
346<div class="doc_text">
347<p>New features include:
348</p>
349
350<ul>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]351<li>?</li>
Tanya Lattner81edfc12008-11-04 18:40:27 +0000[diff] [blame]352
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]353</ul>
Mikhail Glushenkov024f7cf2008-10-13 02:08:34 +0000[diff] [blame]354
Chris Lattner0a1fd102007-09-21 03:54:09 +0000[diff] [blame]355</div>
Chris Lattner72a269f2006-03-03 00:34:26 +0000[diff] [blame]356
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]357<!--=========================================================================-->
358<div class="doc_subsection">
359<a name="changes">Major Changes and Removed Features</a>
360</div>
361
362<div class="doc_text">
363
Chris Lattner934e2d42008-10-13 22:06:31 +0000[diff] [blame]364<p>If you're already an LLVM user or developer with out-of-tree changes based
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]365on LLVM 2.4, this section lists some "gotchas" that you may run into upgrading
Chris Lattner934e2d42008-10-13 22:06:31 +0000[diff] [blame]366from the previous release.</p>
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]367
368<ul>
369
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]370<li>?</li>
Chris Lattner934e2d42008-10-13 22:06:31 +0000[diff] [blame]371</ul>
372
373
374<p>In addition, many APIs have changed in this release. Some of the major LLVM
375API changes are:</p>
376
377<ul>
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]378<li>?</li>
Devang Pateldbf83832008-10-14 20:03:43 +0000[diff] [blame]379</ul>
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]380
Chris Lattner7fad44b2009-02-25 04:41:31 +0000[diff] [blame]381<li>?</li>
Chris Lattner1e4d5bc2008-10-13 17:57:36 +0000[diff] [blame]382</ul>
383
384</div>
385
386
387
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]388<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]389<div class="doc_section">
390 <a name="portability">Portability and Supported Platforms</a>
391</div>
Chris Lattner62495762003-10-02 16:38:05 +0000[diff] [blame]392<!-- *********************************************************************** -->
393
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]394<div class="doc_text">
395
John Criswell64307722004-12-08 20:35:47 +0000[diff] [blame]396<p>LLVM is known to work on the following platforms:</p>
Chris Lattner2c7b0872004-06-01 18:22:41 +0000[diff] [blame]397
398<ul>
Chris Lattner2a092392008-11-10 05:40:34 +0000[diff] [blame]399<li>Intel and AMD machines (IA32, X86-64, AMD64, EMT-64) running Red Hat
400Linux, Fedora Core and FreeBSD (and probably other unix-like systems).</li>
401<li>PowerPC and X86-based Mac OS X systems, running 10.3 and above in 32-bit
402and 64-bit modes.</li>
Chris Lattnercdc44ed2008-02-06 18:00:06 +0000[diff] [blame]403<li>Intel and AMD machines running on Win32 using MinGW libraries (native).</li>
Chris Lattnerbee7b322007-05-23 04:39:32 +0000[diff] [blame]404<li>Intel and AMD machines running on Win32 with the Cygwin libraries (limited
405 support is available for native builds with Visual C++).</li>
Gabor Greif80ae8a72008-06-05 18:39:01 +0000[diff] [blame]406<li>Sun UltraSPARC workstations running Solaris 10.</li>
John Criswelld5234922005-05-13 20:28:15 +0000[diff] [blame]407<li>Alpha-based machines running Debian GNU/Linux.</li>
Gabor Greif80ae8a72008-06-05 18:39:01 +0000[diff] [blame]408<li>Itanium-based (IA64) machines running Linux and HP-UX.</li>
Chris Lattner2c7b0872004-06-01 18:22:41 +0000[diff] [blame]409</ul>
410
Chris Lattner618a99f2008-06-05 06:57:39 +0000[diff] [blame]411<p>The core LLVM infrastructure uses GNU autoconf to adapt itself
Brian Gaekee3e557e2004-05-09 05:28:35 +0000[diff] [blame]412to the machine and operating system on which it is built. However, minor
413porting may be required to get LLVM to work on new platforms. We welcome your
414portability patches and reports of successful builds or error messages.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]415
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]416</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]417
418<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]419<div class="doc_section">
420 <a name="knownproblems">Known Problems</a>
421</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]422<!-- *********************************************************************** -->
423
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]424<div class="doc_text">
425
Chris Lattner2a092392008-11-10 05:40:34 +0000[diff] [blame]426<p>This section contains significant known problems with the LLVM system,
427listed by component. If you run into a problem, please check the <a
Chris Lattnera69595e2005-10-29 07:07:09 +0000[diff] [blame]428href="http://llvm.org/bugs/">LLVM bug database</a> and submit a bug if
Chris Lattnerb84f3322003-12-12 21:22:16 +0000[diff] [blame]429there isn't already one.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]430
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]431</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]432
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]433<!-- ======================================================================= -->
434<div class="doc_subsection">
435 <a name="experimental">Experimental features included with this release</a>
436</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]437
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]438<div class="doc_text">
439
Misha Brukmanfa50a222004-05-12 21:46:05 +0000[diff] [blame]440<p>The following components of this LLVM release are either untested, known to
441be broken or unreliable, or are in early development. These components should
442not be relied on, and bugs should not be filed against them, but they may be
443useful to some people. In particular, if you would like to work on one of these
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]444components, please contact us on the <a
445href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVMdev list</a>.</p>
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]446
447<ul>
Gabor Greif20564a02008-10-14 11:31:14 +0000[diff] [blame]448<li>The MSIL, IA64, Alpha, SPU, MIPS, and PIC16 backends are experimental.</li>
Duncan Sands56448462008-06-08 20:18:35 +0000[diff] [blame]449<li>The llc "<tt>-filetype=asm</tt>" (the default) is the only supported
Chris Lattner7422bce2008-02-06 06:30:34 +0000[diff] [blame]450 value for this option.</li>
Chris Lattnerb911de42004-03-14 02:03:02 +0000[diff] [blame]451</ul>
452
453</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]454
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]455<!-- ======================================================================= -->
456<div class="doc_subsection">
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]457 <a name="x86-be">Known problems with the X86 back-end</a>
John Criswell3bdbd302005-11-08 21:11:33 +0000[diff] [blame]458</div>
459
460<div class="doc_text">
461
462<ul>
Anton Korobeynikov486c7d32008-06-08 10:24:13 +0000[diff] [blame]463 <li>The X86 backend does not yet support
464 all <a href="http://llvm.org/PR879">inline assembly that uses the X86
465 floating point stack</a>. It supports the 'f' and 't' constraints, but not
466 'u'.</li>
Chris Lattnerb076b002008-06-08 21:19:07 +0000[diff] [blame]467 <li>The X86 backend generates inefficient floating point code when configured
468 to generate code for systems that don't have SSE2.</li>
Duncan Sands0bc15262008-06-08 19:38:43 +0000[diff] [blame]469 <li>Win64 code generation wasn't widely tested. Everything should work, but we
Anton Korobeynikov486c7d32008-06-08 10:24:13 +0000[diff] [blame]470 expect small issues to happen. Also, llvm-gcc cannot build mingw64 runtime
471 currently due
472 to <a href="http://llvm.org/PR2255">several</a>
Chris Lattner54d12102008-06-08 23:12:47 +0000[diff] [blame]473 <a href="http://llvm.org/PR2257">bugs</a> due to lack of support for the
474 'u' inline assembly constraint and X87 floating point inline assembly.</li>
Dan Gohman721b3722008-06-08 23:05:11 +0000[diff] [blame]475 <li>The X86-64 backend does not yet support the LLVM IR instruction
476 <tt>va_arg</tt>. Currently, the llvm-gcc front-end supports variadic
477 argument constructs on X86-64 by lowering them manually.</li>
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]478</ul>
479
480</div>
481
482<!-- ======================================================================= -->
483<div class="doc_subsection">
484 <a name="ppc-be">Known problems with the PowerPC back-end</a>
485</div>
486
487<div class="doc_text">
488
489<ul>
Nicolas Geoffray77d99502007-05-15 09:21:28 +0000[diff] [blame]490<li>The Linux PPC32/ABI support needs testing for the interpreter and static
Chris Lattnerbee7b322007-05-23 04:39:32 +0000[diff] [blame]491compilation, and lacks support for debug information.</li>
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]492</ul>
493
494</div>
495
496<!-- ======================================================================= -->
497<div class="doc_subsection">
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]498 <a name="arm-be">Known problems with the ARM back-end</a>
499</div>
500
501<div class="doc_text">
502
503<ul>
Chris Lattnerbee7b322007-05-23 04:39:32 +0000[diff] [blame]504<li>Thumb mode works only on ARMv6 or higher processors. On sub-ARMv6
Duncan Sands47fc0a22007-09-26 15:59:54 +0000[diff] [blame]505processors, thumb programs can crash or produce wrong
Chris Lattnerbee7b322007-05-23 04:39:32 +0000[diff] [blame]506results (<a href="http://llvm.org/PR1388">PR1388</a>).</li>
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]507<li>Compilation for ARM Linux OABI (old ABI) is supported, but not fully tested.
508</li>
Chris Lattnerb076b002008-06-08 21:19:07 +0000[diff] [blame]509<li>There is a bug in QEMU-ARM (&lt;= 0.9.0) which causes it to incorrectly
510 execute
Chris Lattnerbee7b322007-05-23 04:39:32 +0000[diff] [blame]511programs compiled with LLVM. Please use more recent versions of QEMU.</li>
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]512</ul>
513
514</div>
515
516<!-- ======================================================================= -->
517<div class="doc_subsection">
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]518 <a name="sparc-be">Known problems with the SPARC back-end</a>
519</div>
520
521<div class="doc_text">
522
523<ul>
524<li>The SPARC backend only supports the 32-bit SPARC ABI (-m32), it does not
525 support the 64-bit SPARC ABI (-m64).</li>
526</ul>
527
528</div>
529
530<!-- ======================================================================= -->
531<div class="doc_subsection">
Bruno Cardoso Lopes24eb3de2008-10-25 14:56:26 +0000[diff] [blame]532 <a name="mips-be">Known problems with the MIPS back-end</a>
533</div>
534
535<div class="doc_text">
536
537<ul>
538<li>The O32 ABI is not fully supported.</li>
539<li>64-bit MIPS targets are not supported yet.</li>
540</ul>
541
542</div>
543
544<!-- ======================================================================= -->
545<div class="doc_subsection">
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]546 <a name="alpha-be">Known problems with the Alpha back-end</a>
547</div>
548
549<div class="doc_text">
550
551<ul>
552
553<li>On 21164s, some rare FP arithmetic sequences which may trap do not have the
554appropriate nops inserted to ensure restartability.</li>
555
John Criswell3bdbd302005-11-08 21:11:33 +0000[diff] [blame]556</ul>
557</div>
558
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]559<!-- ======================================================================= -->
560<div class="doc_subsection">
561 <a name="ia64-be">Known problems with the IA64 back-end</a>
562</div>
563
564<div class="doc_text">
565
566<ul>
Chris Lattner54d12102008-06-08 23:12:47 +0000[diff] [blame]567<li>The Itanium backend is highly experimental, and has a number of known
568 issues. We are looking for a maintainer for the Itanium backend. If you
Gabor Greife4544f72008-10-15 10:47:24 +0000[diff] [blame]569 are interested, please contact the LLVMdev mailing list.</li>
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]570</ul>
571
572</div>
573
574<!-- ======================================================================= -->
575<div class="doc_subsection">
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]576 <a name="c-be">Known problems with the C back-end</a>
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]577</div>
578
579<div class="doc_text">
580
581<ul>
Chris Lattnera1a4c9a2008-06-05 06:35:40 +0000[diff] [blame]582<li><a href="http://llvm.org/PR802">The C backend has only basic support for
583 inline assembly code</a>.</li>
Chris Lattner8e061162007-09-26 06:01:35 +0000[diff] [blame]584<li><a href="http://llvm.org/PR1658">The C backend violates the ABI of common
585 C++ programs</a>, preventing intermixing between C++ compiled by the CBE and
Duncan Sands56448462008-06-08 20:18:35 +0000[diff] [blame]586 C++ code compiled with llc or native compilers.</li>
Duncan Sandse09506a2008-02-10 13:40:55 +0000[diff] [blame]587<li>The C backend does not support all exception handling constructs.</li>
Chris Lattnerb81f10e2006-11-18 07:51:14 +0000[diff] [blame]588</ul>
589
590</div>
John Criswell3bdbd302005-11-08 21:11:33 +0000[diff] [blame]591
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]592
593<!-- ======================================================================= -->
594<div class="doc_subsection">
Chris Lattnera1a4c9a2008-06-05 06:35:40 +0000[diff] [blame]595 <a name="c-fe">Known problems with the llvm-gcc C front-end</a>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]596</div>
Chris Lattner178f3db2003-10-02 05:07:23 +0000[diff] [blame]597
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]598<div class="doc_text">
Chris Lattner72a269f2006-03-03 00:34:26 +0000[diff] [blame]599
Chris Lattnercdc44ed2008-02-06 18:00:06 +0000[diff] [blame]600<p>llvm-gcc does not currently support <a href="http://llvm.org/PR869">Link-Time
601Optimization</a> on most platforms "out-of-the-box". Please inquire on the
Gabor Greife4544f72008-10-15 10:47:24 +0000[diff] [blame]602LLVMdev mailing list if you are interested.</p>
Chris Lattner44124232006-08-08 17:27:28 +0000[diff] [blame]603
Chris Lattnera1a4c9a2008-06-05 06:35:40 +0000[diff] [blame]604<p>The only major language feature of GCC not supported by llvm-gcc is
605 the <tt>__builtin_apply</tt> family of builtins. However, some extensions
606 are only supported on some targets. For example, trampolines are only
Duncan Sands56448462008-06-08 20:18:35 +0000[diff] [blame]607 supported on some targets (these are used when you take the address of a
608 nested function).</p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]609
Chris Lattnera1a4c9a2008-06-05 06:35:40 +0000[diff] [blame]610<p>If you run into GCC extensions which are not supported, please let us know.
611</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]612
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]613</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]614
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]615<!-- ======================================================================= -->
616<div class="doc_subsection">
Chris Lattnera1a4c9a2008-06-05 06:35:40 +0000[diff] [blame]617 <a name="c++-fe">Known problems with the llvm-gcc C++ front-end</a>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]618</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]619
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]620<div class="doc_text">
621
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]622<p>The C++ front-end is considered to be fully
Chris Lattnerb5bb5972004-12-07 08:04:13 +0000[diff] [blame]623tested and works for a number of non-trivial programs, including LLVM
Chris Lattner97beb512007-05-14 06:56:09 +0000[diff] [blame]624itself, Qt, Mozilla, etc.</p>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]625
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]626<ul>
Anton Korobeynikov28f08aa2008-10-11 18:27:16 +0000[diff] [blame]627<li>Exception handling works well on the X86 and PowerPC targets. Currently
Chris Lattner2a092392008-11-10 05:40:34 +0000[diff] [blame]628 only Linux and Darwin targets are supported (both 32 and 64 bit).</li>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]629</ul>
Chris Lattner46ecf612003-10-07 22:14:37 +0000[diff] [blame]630
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]631</div>
632
Chris Lattner7292fb12008-10-30 03:58:13 +0000[diff] [blame]633<!-- ======================================================================= -->
634<div class="doc_subsection">
635 <a name="fortran-fe">Known problems with the llvm-gcc Fortran front-end</a>
636</div>
637
638<div class="doc_text">
Gabor Greife5f9d672008-11-04 21:50:59 +0000[diff] [blame]639<ul>
Chris Lattner7292fb12008-10-30 03:58:13 +0000[diff] [blame]640<li>Fortran support generally works, but there are still several unresolved bugs
641 in Bugzilla. Please see the tools/gfortran component for details.</li>
642
643<li>The Fortran front-end currently does not build on Darwin (without tweaks)
644 due to unresolved dependencies on the C front-end.</li>
Gabor Greife5f9d672008-11-04 21:50:59 +0000[diff] [blame]645</ul>
Chris Lattner7292fb12008-10-30 03:58:13 +0000[diff] [blame]646</div>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]647
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]648<!-- ======================================================================= -->
649<div class="doc_subsection">
Chris Lattnera1a4c9a2008-06-05 06:35:40 +0000[diff] [blame]650 <a name="ada-fe">Known problems with the llvm-gcc Ada front-end</a>
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]651</div>
652
653<div class="doc_text">
654The llvm-gcc 4.2 Ada compiler works fairly well, however this is not a mature
655technology and problems should be expected.
656<ul>
Duncan Sands56448462008-06-08 20:18:35 +0000[diff] [blame]657<li>The Ada front-end currently only builds on X86-32. This is mainly due
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]658to lack of trampoline support (pointers to nested functions) on other platforms,
Duncan Sands56448462008-06-08 20:18:35 +0000[diff] [blame]659however it <a href="http://llvm.org/PR2006">also fails to build on X86-64</a>
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]660which does support trampolines.</li>
661<li>The Ada front-end <a href="http://llvm.org/PR2007">fails to bootstrap</a>.
662Workaround: configure with --disable-bootstrap.</li>
Duncan Sandsaef747f2008-10-13 17:27:23 +0000[diff] [blame]663<li>The c380004, <a href="http://llvm.org/PR2010">c393010</a>
664and <a href="http://llvm.org/PR2421">cxg2021</a> ACATS tests fail
665(c380004 also fails with gcc-4.2 mainline).</li>
666<li>Some gcc specific Ada tests continue to crash the compiler.</li>
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]667<li>The -E binder option (exception backtraces)
668<a href="http://llvm.org/PR1982">does not work</a> and will result in programs
669crashing if an exception is raised. Workaround: do not use -E.</li>
670<li>Only discrete types <a href="http://llvm.org/PR1981">are allowed to start
671or finish at a non-byte offset</a> in a record. Workaround: do not pack records
672or use representation clauses that result in a field of a non-discrete type
673starting or finishing in the middle of a byte.</li>
Chris Lattnerb076b002008-06-08 21:19:07 +0000[diff] [blame]674<li>The <tt>lli</tt> interpreter <a href="http://llvm.org/PR2009">considers
675'main' as generated by the Ada binder to be invalid</a>.
676Workaround: hand edit the file to use pointers for <tt>argv</tt> and
677<tt>envp</tt> rather than integers.</li>
678<li>The <tt>-fstack-check</tt> option <a href="http://llvm.org/PR2008">is
679ignored</a>.</li>
Chris Lattnere38ac152008-02-12 06:29:45 +0000[diff] [blame]680</ul>
681</div>
682
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]683<!-- *********************************************************************** -->
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]684<div class="doc_section">
685 <a name="additionalinfo">Additional Information</a>
686</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]687<!-- *********************************************************************** -->
688
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]689<div class="doc_text">
690
Chris Lattnercb5596d2005-05-16 17:13:10 +0000[diff] [blame]691<p>A wide variety of additional information is available on the <a
Chris Lattnere0c1df42007-05-18 00:44:29 +0000[diff] [blame]692href="http://llvm.org">LLVM web page</a>, in particular in the <a
693href="http://llvm.org/docs/">documentation</a> section. The web page also
Reid Spencerc7f87f22007-07-09 08:04:31 +0000[diff] [blame]694contains versions of the API documentation which is up-to-date with the
695Subversion version of the source code.
Misha Brukman96158092005-03-30 19:14:24 +0000[diff] [blame]696You can access versions of these documents specific to this release by going
697into the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]698
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]699<p>If you have any questions or comments about LLVM, please feel free to contact
Chris Lattnera69595e2005-10-29 07:07:09 +0000[diff] [blame]700us via the <a href="http://llvm.org/docs/#maillist"> mailing
Chris Lattnerb84f3322003-12-12 21:22:16 +0000[diff] [blame]701lists</a>.</p>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]702
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]703</div>
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]704
705<!-- *********************************************************************** -->
Chris Lattner3d482502003-10-02 04:57:28 +0000[diff] [blame]706
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]707<hr>
Misha Brukman68aab3b2003-11-22 01:23:39 +0000[diff] [blame]708<address>
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Misha Brukman68aab3b2003-11-22 01:23:39 +0000[diff] [blame]713
Chris Lattnere0c1df42007-05-18 00:44:29 +0000[diff] [blame]714 <a href="http://llvm.org/">LLVM Compiler Infrastructure</a><br>
Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]715 Last modified: $Date$
Misha Brukman68aab3b2003-11-22 01:23:39 +0000[diff] [blame]716</address>
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Misha Brukman80731b92003-11-22 00:38:41 +0000[diff] [blame]718</body>
719</html>