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gerrit-public.fairphone.software / platform / external / llvm / adea497673dab74b08fa2546e69619f1abe55662 / . / docs / GettingStarted.html
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Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]4<head>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]6 <title>Getting Started with LLVM System</title>
Daniel Dunbaradea4972012-04-19 20:20:34 +0000[diff] [blame^]7 <link rel="stylesheet" href="_static/llvm.css" type="text/css">
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]8</head>
9<body>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]10
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]11<h1>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]12 Getting Started with the LLVM System
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]13</h1>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]14
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]15<ul>
16 <li><a href="#overview">Overview</a>
17 <li><a href="#quickstart">Getting Started Quickly (A Summary)</a>
18 <li><a href="#requirements">Requirements</a>
Chris Lattner96768ea2003-02-14 04:22:13 +0000[diff] [blame]19 <ol>
Chris Lattner269f80c2007-11-01 04:20:16 +0000[diff] [blame]20 <li><a href="#hardware">Hardware</a></li>
21 <li><a href="#software">Software</a></li>
22 <li><a href="#brokengcc">Broken versions of GCC and other tools</a></li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]23 </ol></li>
John Criswell7a73b802003-06-30 21:59:07 +0000[diff] [blame]24
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]25 <li><a href="#starting">Getting Started with LLVM</a>
John Criswell0b459202003-07-08 20:35:59 +0000[diff] [blame]26 <ol>
Chris Lattner269f80c2007-11-01 04:20:16 +0000[diff] [blame]27 <li><a href="#terminology">Terminology and Notation</a></li>
28 <li><a href="#environment">Setting Up Your Environment</a></li>
29 <li><a href="#unpack">Unpacking the LLVM Archives</a></li>
30 <li><a href="#checkout">Checkout LLVM from Subversion</a></li>
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]31 <li><a href="#git_mirror">LLVM GIT mirror</a></li>
Chris Lattner269f80c2007-11-01 04:20:16 +0000[diff] [blame]32 <li><a href="#config">Local LLVM Configuration</a></li>
33 <li><a href="#compile">Compiling the LLVM Suite Source Code</a></li>
34 <li><a href="#cross-compile">Cross-Compiling LLVM</a></li>
35 <li><a href="#objfiles">The Location of LLVM Object Files</a></li>
36 <li><a href="#optionalconfig">Optional Configuration Items</a></li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]37 </ol></li>
John Criswell0b459202003-07-08 20:35:59 +0000[diff] [blame]38
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]39 <li><a href="#layout">Program layout</a>
40 <ol>
Chris Lattner269f80c2007-11-01 04:20:16 +0000[diff] [blame]41 <li><a href="#examples"><tt>llvm/examples</tt></a></li>
42 <li><a href="#include"><tt>llvm/include</tt></a></li>
43 <li><a href="#lib"><tt>llvm/lib</tt></a></li>
44 <li><a href="#projects"><tt>llvm/projects</tt></a></li>
45 <li><a href="#runtime"><tt>llvm/runtime</tt></a></li>
46 <li><a href="#test"><tt>llvm/test</tt></a></li>
Andrew Trickbcf01162010-09-23 20:26:44 +0000[diff] [blame]47 <li><a href="#test-suite"><tt>test-suite</tt></a></li>
Chris Lattner269f80c2007-11-01 04:20:16 +0000[diff] [blame]48 <li><a href="#tools"><tt>llvm/tools</tt></a></li>
49 <li><a href="#utils"><tt>llvm/utils</tt></a></li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]50 </ol></li>
John Criswell0f6d7c02003-10-27 18:18:16 +0000[diff] [blame]51
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]52 <li><a href="#tutorial">An Example Using the LLVM Tool Chain</a>
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]53 <ol>
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]54 <li><a href="#tutorial4">Example with Clang</a></li>
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]55 </ol>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]56 <li><a href="#problems">Common Problems</a>
57 <li><a href="#links">Links</a>
58</ul>
59
Chris Lattner7911ce22004-05-23 21:07:27 +0000[diff] [blame]60<div class="doc_author">
61 <p>Written by:
62 <a href="mailto:criswell@uiuc.edu">John Criswell</a>,
63 <a href="mailto:sabre@nondot.org">Chris Lattner</a>,
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]64 <a href="http://misha.brukman.net/">Misha Brukman</a>,
Chris Lattner7911ce22004-05-23 21:07:27 +0000[diff] [blame]65 <a href="http://www.cs.uiuc.edu/~vadve">Vikram Adve</a>, and
66 <a href="mailto:gshi1@uiuc.edu">Guochun Shi</a>.
67 </p>
68</div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]69
70
71<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]72<h2>
73 <a name="overview">Overview</a>
74</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]75<!-- *********************************************************************** -->
76
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]77<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]78
79<p>Welcome to LLVM! In order to get started, you first need to know some
80basic information.</p>
81
Andrew Trickbcf01162010-09-23 20:26:44 +0000[diff] [blame]82<p>First, LLVM comes in three pieces. The first piece is the LLVM
83suite. This contains all of the tools, libraries, and header files
Jim Grosbachc48d4dc2012-01-25 22:00:23 +0000[diff] [blame]84needed to use LLVM. It contains an assembler, disassembler, bitcode
85analyzer and bitcode optimizer. It also contains basic regression tests that
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]86can be used to test the LLVM tools and the Clang front end.</p>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]87
Chad Rosier483454f2012-02-26 21:34:02 +0000[diff] [blame]88<p>The second piece is the <a href="http://clang.llvm.org/">Clang</a> front end.
89This component compiles C, C++, Objective C, and Objective C++ code into LLVM
90bitcode. Once compiled into LLVM bitcode, a program can be manipulated with the
91LLVM tools from the LLVM suite.
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]92</p>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]93
John Criswell3d8ba512004-12-08 17:53:54 +0000[diff] [blame]94<p>
Andrew Trickbcf01162010-09-23 20:26:44 +0000[diff] [blame]95There is a third, optional piece called Test Suite. It is a suite of programs
John Criswell3d8ba512004-12-08 17:53:54 +0000[diff] [blame]96with a testing harness that can be used to further test LLVM's functionality
97and performance.
98</p>
99
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]100</div>
101
102<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]103<h2>
104 <a name="quickstart">Getting Started Quickly (A Summary)</a>
105</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]106<!-- *********************************************************************** -->
107
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]108<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]109
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]110<p>The LLVM Getting Started documentation may be out of date. So, the Clang
111<a href="http://clang.llvm.org/get_started.html">Getting Started</a> page might
112also be a good place to start.</p>
Chad Rosier8ce6b7d2012-02-23 21:23:24 +0000[diff] [blame]113
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]114<p>Here's the short story for getting up and running quickly with LLVM:</p>
115
116<ol>
Reid Spencer9f547912004-11-08 00:29:22 +0000[diff] [blame]117 <li>Read the documentation.</li>
118 <li>Read the documentation.</li>
119 <li>Remember that you were warned twice about reading the documentation.</li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]120
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]121 <li>Checkout LLVM:
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]122 <ul>
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]123 <li><tt>cd <i>where-you-want-llvm-to-live</i></tt>
124 <li><tt>svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</tt></li>
125 </ul>
126 </li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]127
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]128 <li>Checkout Clang:
John Criswell9e2485c2004-12-10 15:51:16 +0000[diff] [blame]129 <ul>
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]130 <li><tt>cd <i>where-you-want-llvm-to-live</i></tt>
131 <li><tt>cd llvm/tools</tt>
132 <li><tt>svn co http://llvm.org/svn/llvm-project/cfe/trunk clang</tt></li>
133 </ul>
134 </li>
John Criswell9e2485c2004-12-10 15:51:16 +0000[diff] [blame]135
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]136 <li>Checkout Compiler-RT:
137 <ul>
138 <li><tt>cd <i>where-you-want-llvm-to-live</i></tt>
139 <li><tt>cd llvm/projects</tt>
140 <li><tt>svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk
141 compiler-rt</tt></li>
142 </ul>
143 </li>
John Criswell9e2485c2004-12-10 15:51:16 +0000[diff] [blame]144
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]145 <li>Get the Test Suite Source Code <b>[Optional]</b>
146 <ul>
147 <li><tt>cd <i>where-you-want-llvm-to-live</i></tt>
148 <li><tt>cd llvm/projects</tt>
149 <li><tt>svn co http://llvm.org/svn/llvm-project/test-suite/trunk test-suite</tt></li>
150 </ul>
151 </li>
John Criswell9e2485c2004-12-10 15:51:16 +0000[diff] [blame]152
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]153 <li>Configure and build LLVM and Clang:
154 <ul>
Misha Brukman9106eca2005-02-03 22:25:23 +0000[diff] [blame]155 <li><tt>cd <i>where-you-want-to-build-llvm</i></tt></li>
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]156 <li><tt>mkdir build</tt> (for building without polluting the source dir)</li>
157 <li><tt>cd build</tt></li>
NAKAMURA Takumi9c55f592012-03-27 11:25:16 +0000[diff] [blame]158 <li><tt>../llvm/configure [options]</tt>
159 <br>Some common options:
Misha Brukman9106eca2005-02-03 22:25:23 +0000[diff] [blame]160
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]161 <ul>
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]162 <li><tt>--prefix=<i>directory</i></tt> -
163 Specify for <i>directory</i> the full pathname of where you
Misha Brukman9106eca2005-02-03 22:25:23 +0000[diff] [blame]164 want the LLVM tools and libraries to be installed (default
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]165 <tt>/usr/local</tt>).</li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]166 </ul>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]167
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]168 <ul>
169 <li><tt>--enable-optimized</tt> -
170 Compile with optimizations enabled (default is NO).</li>
171 </ul>
172
173 <ul>
174 <li><tt>--enable-assertions</tt> -
175 Compile with assertion checks enabled (default is YES).</li>
176 </ul>
NAKAMURA Takumi9c55f592012-03-27 11:25:16 +0000[diff] [blame]177 </li>
Chad Rosier1cdc9fb2012-02-26 22:12:59 +0000[diff] [blame]178 <li><tt>make [-j]</tt> - The -j specifies the number of jobs (commands) to
179 run simultaneously. This builds both LLVM and Clang for Debug+Asserts mode.
180 The --enabled-optimized configure option is used to specify a Release build.</li>
181 <li><tt>make check-all</tt> -
182 This run the regression tests to ensure everything is in working order.</li>
183 <li><tt>make update</tt> -
184 This command is used to update all the svn repositories at once, rather then
185 having to <tt>cd</tt> into the individual repositories and running
186 <tt>svn update</tt>.</li>
187 <li>It is also possible to use CMake instead of the makefiles. With CMake
188 it is also possible to generate project files for several IDEs: Eclipse
189 CDT4, CodeBlocks, Qt-Creator (use the CodeBlocks generator), KDevelop3.</li>
190 <li>If you get an "internal compiler error (ICE)" or test failures, see
191 <a href="#brokengcc">below</a>.</li>
192
193 </ul>
194 </li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]195
196</ol>
197
Chris Lattnerfcd37252004-06-21 22:52:48 +0000[diff] [blame]198<p>Consult the <a href="#starting">Getting Started with LLVM</a> section for
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]199detailed information on configuring and compiling LLVM. See <a
200href="#environment">Setting Up Your Environment</a> for tips that simplify
Chad Rosier7497a9a2012-02-26 22:26:37 +0000[diff] [blame]201working with the Clang front end and LLVM tools. Go to <a href="#layout">Program
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]202Layout</a> to learn about the layout of the source code tree.</p>
203
204</div>
205
206<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]207<h2>
208 <a name="requirements">Requirements</a>
209</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]210<!-- *********************************************************************** -->
211
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]212<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]213
214<p>Before you begin to use the LLVM system, review the requirements given below.
215This may save you some trouble by knowing ahead of time what hardware and
216software you will need.</p>
217
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]218<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]219<h3>
220 <a name="hardware">Hardware</a>
221</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]222
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]223<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]224
225<p>LLVM is known to work on the following platforms:</p>
226
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]227<table cellpadding="3" summary="Known LLVM platforms">
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]228<tr>
229 <th>OS</th>
230 <th>Arch</th>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]231 <th>Compilers</th>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]232</tr>
233<tr>
Chris Lattnerd8afc462009-07-22 04:21:40 +0000[diff] [blame]234 <td>AuroraUX</td>
235 <td>x86<sup><a href="#pf_1">1</a></sup></td>
236 <td>GCC</td>
Chris Lattner3e7b5ca2009-07-21 22:47:03 +0000[diff] [blame]237</tr>
238<tr>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]239 <td>Linux</td>
Chris Lattner7db3f522005-02-09 21:15:51 +0000[diff] [blame]240 <td>x86<sup><a href="#pf_1">1</a></sup></td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]241 <td>GCC</td>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]242</tr>
243<tr>
Edward O'Callaghan37442b72009-08-04 05:24:28 +0000[diff] [blame]244 <td>Linux</td>
245 <td>amd64</td>
246 <td>GCC</td>
247</tr>
248<tr>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]249 <td>Solaris</td>
250 <td>V9 (Ultrasparc)</td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]251 <td>GCC</td>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]252</tr>
253<tr>
254 <td>FreeBSD</td>
Chris Lattner7db3f522005-02-09 21:15:51 +0000[diff] [blame]255 <td>x86<sup><a href="#pf_1">1</a></sup></td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]256 <td>GCC</td>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]257</tr>
258<tr>
Bill Wendlingf7226992010-12-15 01:35:55 +0000[diff] [blame]259 <td>FreeBSD</td>
260 <td>amd64</td>
261 <td>GCC</td>
262</tr>
263<tr>
Chris Lattner7db3f522005-02-09 21:15:51 +0000[diff] [blame]264 <td>MacOS X<sup><a href="#pf_2">2</a></sup></td>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]265 <td>PowerPC</td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]266 <td>GCC</td>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]267</tr>
268<tr>
Scott Michel050bc812008-03-18 23:13:26 +0000[diff] [blame]269 <td>MacOS X<sup><a href="#pf_2">2</a>,<a href="#pf_9">9</a></sup></td>
Tanya Lattner993b9802006-04-20 04:35:34 +0000[diff] [blame]270 <td>x86</td>
271 <td>GCC</td>
Tanya Lattner993b9802006-04-20 04:35:34 +0000[diff] [blame]272</tr>
273<tr>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]274 <td>Cygwin/Win32</td>
Anton Korobeynikov16f16922009-12-09 17:26:02 +0000[diff] [blame]275 <td>x86<sup><a href="#pf_1">1</a>,<a href="#pf_8">8</a>,
276 <a href="#pf_11">11</a></sup></td>
Anton Korobeynikov780679b2010-02-11 21:51:51 +0000[diff] [blame]277 <td>GCC 3.4.X, binutils 2.20</td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]278</tr>
Misha Brukmanc155a0a2004-12-23 07:14:56 +0000[diff] [blame]279<tr>
Chris Lattner8ccb87f2005-02-09 20:43:48 +0000[diff] [blame]280 <td>MinGW/Win32</td>
Anton Korobeynikov2bc8ef12009-08-06 12:54:58 +0000[diff] [blame]281 <td>x86<sup><a href="#pf_1">1</a>,<a href="#pf_6">6</a>,
NAKAMURA Takumi3c496552011-03-28 06:27:06 +0000[diff] [blame]282 <a href="#pf_8">8</a>, <a href="#pf_10">10</a>,
283 <a href="#pf_11">11</a></sup></td>
Anton Korobeynikov780679b2010-02-11 21:51:51 +0000[diff] [blame]284 <td>GCC 3.4.X, binutils 2.20</td>
Chris Lattner8ccb87f2005-02-09 20:43:48 +0000[diff] [blame]285</tr>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]286</table>
287
288<p>LLVM has partial support for the following platforms:</p>
289
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]290<table summary="LLVM partial platform support">
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]291<tr>
292 <th>OS</th>
293 <th>Arch</th>
294 <th>Compilers</th>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]295</tr>
Misha Brukman00117692004-11-15 21:05:08 +0000[diff] [blame]296<tr>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]297 <td>Windows</td>
Chris Lattner7db3f522005-02-09 21:15:51 +0000[diff] [blame]298 <td>x86<sup><a href="#pf_1">1</a></sup></td>
Chandler Carruth2929de42011-11-16 19:52:13 +0000[diff] [blame]299 <td>Visual Studio 2008 or higher<sup><a href="#pf_4">4</a>,<a href="#pf_5">5</a></sup></td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]300<tr>
Chris Lattner7db3f522005-02-09 21:15:51 +0000[diff] [blame]301 <td>AIX<sup><a href="#pf_3">3</a>,<a href="#pf_4">4</a></sup></td>
Misha Brukman00117692004-11-15 21:05:08 +0000[diff] [blame]302 <td>PowerPC</td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]303 <td>GCC</td>
304</tr>
305<tr>
Chris Lattner7db3f522005-02-09 21:15:51 +0000[diff] [blame]306 <td>Linux<sup><a href="#pf_3">3</a>,<a href="#pf_5">5</a></sup></td>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]307 <td>PowerPC</td>
308 <td>GCC</td>
Misha Brukman00117692004-11-15 21:05:08 +0000[diff] [blame]309</tr>
John Criswell75162552005-05-09 16:49:59 +0000[diff] [blame]310
311<tr>
312 <td>Linux<sup><a href="#pf_7">7</a></sup></td>
313 <td>Alpha</td>
314 <td>GCC</td>
315</tr>
316<tr>
317 <td>Linux<sup><a href="#pf_7">7</a></sup></td>
318 <td>Itanium (IA-64)</td>
319 <td>GCC</td>
320</tr>
Duraid Madinae8714af2005-05-10 06:57:53 +0000[diff] [blame]321<tr>
322 <td>HP-UX<sup><a href="#pf_7">7</a></sup></td>
323 <td>Itanium (IA-64)</td>
324 <td>HP aCC</td>
325</tr>
NAKAMURA Takumi282fdd32011-03-28 06:27:12 +0000[diff] [blame]326<tr>
327 <td>Windows x64</td>
328 <td>x86-64</td>
329 <td>mingw-w64's GCC-4.5.x<sup><a href="#pf_12">12</a></sup></td>
330</tr>
Misha Brukman14ab5372004-11-15 05:19:53 +0000[diff] [blame]331</table>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]332
Misha Brukmana892ead2005-02-09 21:01:26 +0000[diff] [blame]333<p><b>Notes:</b></p>
334
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]335<div class="doc_notes">
336<ol>
337<li><a name="pf_1">Code generation supported for Pentium processors and
338up</a></li>
339<li><a name="pf_2">Code generation supported for 32-bit ABI only</a></li>
340<li><a name="pf_3">No native code generation</a></li>
Nick Lewycky28ea4f62008-12-08 00:45:02 +0000[diff] [blame]341<li><a name="pf_4">Build is not complete: one or more tools do not link or function</a></li>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]342<li><a name="pf_5">The GCC-based C/C++ frontend does not build</a></li>
Chris Lattner01bb8b02009-01-02 07:10:51 +0000[diff] [blame]343<li><a name="pf_6">The port is done using the MSYS shell.</a></li>
John Criswell75162552005-05-09 16:49:59 +0000[diff] [blame]344<li><a name="pf_7">Native code generation exists but is not complete.</a></li>
Anton Korobeynikov780679b2010-02-11 21:51:51 +0000[diff] [blame]345<li><a name="pf_8">Binutils 2.20 or later is required to build the assembler
346 generated by LLVM properly.</a></li>
Chris Lattner22b91d72008-11-09 17:19:14 +0000[diff] [blame]347<li><a name="pf_9">XCode 2.5 and gcc 4.0.1</a> (Apple Build 5370) will trip
Scott Michel050bc812008-03-18 23:13:26 +0000[diff] [blame]348 internal LLVM assert messages when compiled for Release at optimization
Chris Lattner22b91d72008-11-09 17:19:14 +0000[diff] [blame]349 levels greater than 0 (i.e., <i>"-O1"</i> and higher).
350 Add <i>OPTIMIZE_OPTION="-O0"</i> to the build command line
Scott Michel050bc812008-03-18 23:13:26 +0000[diff] [blame]351 if compiling for LLVM Release or bootstrapping the LLVM toolchain.</li>
Anton Korobeynikov2bc8ef12009-08-06 12:54:58 +0000[diff] [blame]352<li><a name="pf_10">For MSYS/MinGW on Windows, be sure to install the MSYS
353 version of the perl package, and be sure it appears in your path
354 before any Windows-based versions such as Strawberry Perl and
355 ActivePerl, as these have Windows-specifics that will cause the
356 build to fail.</a></li>
NAKAMURA Takumi3c496552011-03-28 06:27:06 +0000[diff] [blame]357<li><a name="pf_11">To use LLVM modules on Win32-based system,
NAKAMURA Takumi4d6deb02011-04-09 09:51:57 +0000[diff] [blame]358 you may configure LLVM with <i>&quot;--enable-shared&quot;</i>.</a></li>
NAKAMURA Takumi282fdd32011-03-28 06:27:12 +0000[diff] [blame]359<li><a name="pf_12">To compile SPU backend, you need to add
NAKAMURA Takumi4d6deb02011-04-09 09:51:57 +0000[diff] [blame]360 <tt>&quot;LDFLAGS=-Wl,--stack,16777216&quot;</tt> to configure.</a></li>
Misha Brukmana892ead2005-02-09 21:01:26 +0000[diff] [blame]361</ol>
Misha Brukmana892ead2005-02-09 21:01:26 +0000[diff] [blame]362</div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]363
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]364<p>Note that you will need about 1-3 GB of space for a full LLVM build in Debug
John Criswell8bfe6a72005-05-18 19:43:33 +0000[diff] [blame]365mode, depending on the system (it is so large because of all the debugging
366information and the fact that the libraries are statically linked into multiple
Chris Lattner06942902009-04-25 22:08:52 +0000[diff] [blame]367tools). If you do not need many of the tools and you are space-conscious, you
368can pass <tt>ONLY_TOOLS="tools you need"</tt> to make. The Release build
369requires considerably less space.</p>
Misha Brukman69def742004-11-19 21:53:22 +0000[diff] [blame]370
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]371<p>The LLVM suite <i>may</i> compile on other platforms, but it is not
372guaranteed to do so. If compilation is successful, the LLVM utilities should be
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]373able to assemble, disassemble, analyze, and optimize LLVM bitcode. Code
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]374generation should work as well, although the generated native code may not work
375on your platform.</p>
376
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]377</div>
378
379<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]380<h3>
381 <a name="software">Software</a>
382</h3>
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]383<div>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]384 <p>Compiling LLVM requires that you have several software packages
385 installed. The table below lists those required packages. The Package column
386 is the usual name for the software package that LLVM depends on. The Version
387 column provides "known to work" versions of the package. The Notes column
388 describes how LLVM uses the package and provides other details.</p>
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]389 <table summary="Packages required to compile LLVM">
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]390 <tr><th>Package</th><th>Version</th><th>Notes</th></tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]391
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]392 <tr>
393 <td><a href="http://savannah.gnu.org/projects/make">GNU Make</a></td>
394 <td>3.79, 3.79.1</td>
395 <td>Makefile/build processor</td>
396 </tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]397
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]398 <tr>
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]399 <td><a href="http://gcc.gnu.org/">GCC</a></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]400 <td>3.4.2</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]401 <td>C/C++ compiler<sup><a href="#sf1">1</a></sup></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]402 </tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]403
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]404 <tr>
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]405 <td><a href="http://www.gnu.org/software/texinfo/">TeXinfo</a></td>
Chris Lattner2286cab2005-09-06 04:07:15 +0000[diff] [blame]406 <td>4.5</td>
407 <td>For building the CFE</td>
408 </tr>
409
410 <tr>
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]411 <td><a href="http://subversion.tigris.org/project_packages.html">SVN</a></td>
412 <td>&ge;1.3</td>
413 <td>Subversion access to LLVM<sup><a href="#sf2">2</a></sup></td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]414 </tr>
415
NAKAMURA Takumia8b3e182011-04-05 08:24:15 +0000[diff] [blame]416 <!-- FIXME:
417 Do we support dg?
418 Are DejaGnu and expect obsolete?
419 Shall we mention Python? -->
420
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]421 <tr>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]422 <td><a href="http://savannah.gnu.org/projects/dejagnu">DejaGnu</a></td>
423 <td>1.4.2</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]424 <td>Automated test suite<sup><a href="#sf3">3</a></sup></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]425 </tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]426
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]427 <tr>
428 <td><a href="http://www.tcl.tk/software/tcltk/">tcl</a></td>
429 <td>8.3, 8.4</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]430 <td>Automated test suite<sup><a href="#sf3">3</a></sup></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]431 </tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]432
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]433 <tr>
434 <td><a href="http://expect.nist.gov/">expect</a></td>
435 <td>5.38.0</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]436 <td>Automated test suite<sup><a href="#sf3">3</a></sup></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]437 </tr>
438
439 <tr>
440 <td><a href="http://www.perl.com/download.csp">perl</a></td>
Reid Spencer200d93b2004-12-09 17:55:37 +0000[diff] [blame]441 <td>&ge;5.6.0</td>
Daniel Dunbar5b106562012-02-15 19:24:11 +0000[diff] [blame]442 <td>Utilities</td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]443 </tr>
444
445 <tr>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]446 <td><a href="http://savannah.gnu.org/projects/m4">GNU M4</a>
447 <td>1.4</td>
448 <td>Macro processor for configuration<sup><a href="#sf4">4</a></sup></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]449 </tr>
450
451 <tr>
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]452 <td><a href="http://www.gnu.org/software/autoconf/">GNU Autoconf</a></td>
Nick Lewycky2a0ed092009-09-27 04:56:27 +0000[diff] [blame]453 <td>2.60</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]454 <td>Configuration script builder<sup><a href="#sf4">4</a></sup></td>
455 </tr>
456
457 <tr>
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]458 <td><a href="http://www.gnu.org/software/automake/">GNU Automake</a></td>
Nick Lewycky2a0ed092009-09-27 04:56:27 +0000[diff] [blame]459 <td>1.9.6</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]460 <td>aclocal macro generator<sup><a href="#sf4">4</a></sup></td>
461 </tr>
462
463 <tr>
464 <td><a href="http://savannah.gnu.org/projects/libtool">libtool</a></td>
Nick Lewycky2a0ed092009-09-27 04:56:27 +0000[diff] [blame]465 <td>1.5.22</td>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]466 <td>Shared library manager<sup><a href="#sf4">4</a></sup></td>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]467 </tr>
468
469 </table>
470
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]471 <p><b>Notes:</b></p>
472 <div class="doc_notes">
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]473 <ol>
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]474 <li><a name="sf1">Only the C and C++ languages are needed so there's no
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]475 need to build the other languages for LLVM's purposes.</a> See
476 <a href="#brokengcc">below</a> for specific version info.</li>
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]477 <li><a name="sf2">You only need Subversion if you intend to build from the
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]478 latest LLVM sources. If you're working from a release distribution, you
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]479 don't need Subversion.</a></li>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]480 <li><a name="sf3">Only needed if you want to run the automated test
481 suite in the <tt>llvm/test</tt> directory.</a></li>
482 <li><a name="sf4">If you want to make changes to the configure scripts,
Tobias Grosser0560ce42010-05-19 07:00:17 +0000[diff] [blame]483 you will need GNU autoconf (2.60), and consequently, GNU M4 (version 1.4
484 or higher). You will also need automake (1.9.6). We only use aclocal
Reid Spencer200d93b2004-12-09 17:55:37 +0000[diff] [blame]485 from that package.</a></li>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]486 </ol>
Misha Brukman6d8e1532005-02-09 22:38:47 +0000[diff] [blame]487 </div>
488
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]489 <p>Additionally, your compilation host is expected to have the usual
490 plethora of Unix utilities. Specifically:</p>
491 <ul>
492 <li><b>ar</b> - archive library builder</li>
493 <li><b>bzip2*</b> - bzip2 command for distribution generation</li>
494 <li><b>bunzip2*</b> - bunzip2 command for distribution checking</li>
495 <li><b>chmod</b> - change permissions on a file</li>
John Criswellc4ef3f22004-12-08 16:55:27 +0000[diff] [blame]496 <li><b>cat</b> - output concatenation utility</li>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]497 <li><b>cp</b> - copy files</li>
498 <li><b>date</b> - print the current date/time </li>
499 <li><b>echo</b> - print to standard output</li>
500 <li><b>egrep</b> - extended regular expression search utility</li>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]501 <li><b>find</b> - find files/dirs in a file system</li>
502 <li><b>grep</b> - regular expression search utility</li>
503 <li><b>gzip*</b> - gzip command for distribution generation</li>
504 <li><b>gunzip*</b> - gunzip command for distribution checking</li>
505 <li><b>install</b> - install directories/files </li>
506 <li><b>mkdir</b> - create a directory</li>
507 <li><b>mv</b> - move (rename) files</li>
508 <li><b>ranlib</b> - symbol table builder for archive libraries</li>
Misha Brukman616bd052004-11-20 01:27:40 +0000[diff] [blame]509 <li><b>rm</b> - remove (delete) files and directories</li>
Reid Spencer748d82e2004-11-15 21:15:12 +0000[diff] [blame]510 <li><b>sed</b> - stream editor for transforming output</li>
511 <li><b>sh</b> - Bourne shell for make build scripts</li>
512 <li><b>tar</b> - tape archive for distribution generation</li>
513 <li><b>test</b> - test things in file system</li>
514 <li><b>unzip*</b> - unzip command for distribution checking</li>
515 <li><b>zip*</b> - zip command for distribution generation</li>
516 </ul>
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]517</div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]518
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]519<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]520<h3>
Chris Lattnerdefb9fb2007-06-19 05:52:36 +0000[diff] [blame]521 <a name="brokengcc">Broken versions of GCC and other tools</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]522</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]523
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]524<div>
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]525
526<p>LLVM is very demanding of the host C++ compiler, and as such tends to expose
527bugs in the compiler. In particular, several versions of GCC crash when trying
Ted Kremenek0ba11792011-10-31 21:23:15 +0000[diff] [blame]528to compile LLVM. We routinely use GCC 4.2 (and higher) or Clang.
529Other versions of GCC will probably work as well. GCC versions listed
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]530here are known to not work. If you are using one of these versions, please try
531to upgrade your GCC to something more recent. If you run into a problem with a
532version of GCC not listed here, please <a href="mailto:llvmdev@cs.uiuc.edu">let
533us know</a>. Please use the "<tt>gcc -v</tt>" command to find out which version
534of GCC you are using.
535</p>
536
537<p><b>GCC versions prior to 3.0</b>: GCC 2.96.x and before had several
538problems in the STL that effectively prevent it from compiling LLVM.
539</p>
540
Chris Lattner82f0a092008-02-13 17:50:24 +0000[diff] [blame]541<p><b>GCC 3.2.2 and 3.2.3</b>: These versions of GCC fails to compile LLVM with
542a bogus template error. This was fixed in later GCCs.</p>
John Criswell294ba022004-11-23 22:06:24 +0000[diff] [blame]543
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]544<p><b>GCC 3.3.2</b>: This version of GCC suffered from a <a
545href="http://gcc.gnu.org/PR13392">serious bug</a> which causes it to crash in
546the "<tt>convert_from_eh_region_ranges_1</tt>" GCC function.</p>
Chris Lattner25e7b162005-02-12 20:11:13 +0000[diff] [blame]547
Chris Lattner8e64f152005-02-13 22:20:49 +0000[diff] [blame]548<p><b>Cygwin GCC 3.3.3</b>: The version of GCC 3.3.3 commonly shipped with
Chad Rosier7497a9a2012-02-26 22:26:37 +0000[diff] [blame]549 Cygwin does not work.</p>
Chris Lattner8e64f152005-02-13 22:20:49 +0000[diff] [blame]550<p><b>SuSE GCC 3.3.3</b>: The version of GCC 3.3.3 shipped with SuSE 9.1 (and
551 possibly others) does not compile LLVM correctly (it appears that exception
552 handling is broken in some cases). Please download the FSF 3.3.3 or upgrade
553 to a newer version of GCC.</p>
Bill Wendling18bf0d02007-07-16 08:52:56 +0000[diff] [blame]554<p><b>GCC 3.4.0 on linux/x86 (32-bit)</b>: GCC miscompiles portions of the
Chris Lattner36117ac2007-05-10 06:42:21 +0000[diff] [blame]555 code generator, causing an infinite loop in the llvm-gcc build when built
556 with optimizations enabled (i.e. a release build).</p>
Bill Wendling18bf0d02007-07-16 08:52:56 +0000[diff] [blame]557<p><b>GCC 3.4.2 on linux/x86 (32-bit)</b>: GCC miscompiles portions of the
Chris Lattner36117ac2007-05-10 06:42:21 +0000[diff] [blame]558 code generator at -O3, as with 3.4.0. However gcc 3.4.2 (unlike 3.4.0)
559 correctly compiles LLVM at -O2. A work around is to build release LLVM
560 builds with "make ENABLE_OPTIMIZED=1 OPTIMIZE_OPTION=-O2 ..."</p>
Bill Wendling18bf0d02007-07-16 08:52:56 +0000[diff] [blame]561<p><b>GCC 3.4.x on X86-64/amd64</b>: GCC <a href="http://llvm.org/PR1056">
Chris Lattner77c2af62007-04-01 20:14:46 +0000[diff] [blame]562 miscompiles portions of LLVM</a>.</p>
Chris Lattner269f80c2007-11-01 04:20:16 +0000[diff] [blame]563<p><b>GCC 3.4.4 (CodeSourcery ARM 2005q3-2)</b>: this compiler miscompiles LLVM
564 when building with optimizations enabled. It appears to work with
565 "<tt>make ENABLE_OPTIMIZED=1 OPTIMIZE_OPTION=-O1</tt>" or build a debug
566 build.</p>
Chris Lattnerf2b5e6e2005-05-15 22:26:45 +0000[diff] [blame]567<p><b>IA-64 GCC 4.0.0</b>: The IA-64 version of GCC 4.0.0 is known to
568 miscompile LLVM.</p>
Chris Lattnerdd197912006-06-16 19:53:39 +0000[diff] [blame]569<p><b>Apple Xcode 2.3</b>: GCC crashes when compiling LLVM at -O3 (which is the
570 default with ENABLE_OPTIMIZED=1. To work around this, build with
571 "ENABLE_OPTIMIZED=1 OPTIMIZE_OPTION=-O2".</p>
Chris Lattnerc40eb5e2006-09-07 17:34:27 +0000[diff] [blame]572<p><b>GCC 4.1.1</b>: GCC fails to build LLVM with template concept check errors
573 compiling some files. At the time of this writing, GCC mainline (4.2)
574 did not share the problem.</p>
Chris Lattner78ce3b82007-01-04 07:06:05 +0000[diff] [blame]575<p><b>GCC 4.1.1 on X86-64/amd64</b>: GCC <a href="http://llvm.org/PR1063">
576 miscompiles portions of LLVM</a> when compiling llvm itself into 64-bit
577 code. LLVM will appear to mostly work but will be buggy, e.g. failing
578 portions of its testsuite.</p>
Reid Spencer72f92f02007-04-11 21:28:31 +0000[diff] [blame]579<p><b>GCC 4.1.2 on OpenSUSE</b>: Seg faults during libstdc++ build and on x86_64
580platforms compiling md5.c gets a mangled constant.</p>
Daniel Dunbarb7dfaf92008-10-11 18:40:33 +0000[diff] [blame]581<p><b>GCC 4.1.2 (20061115 (prerelease) (Debian 4.1.1-21)) on Debian</b>: Appears
582to miscompile parts of LLVM 2.4. One symptom is ValueSymbolTable complaining
583about symbols remaining in the table on destruction.</p>
Nuno Lopesf82242d2008-12-10 16:11:10 +0000[diff] [blame]584<p><b>GCC 4.1.2 20071124 (Red Hat 4.1.2-42)</b>: Suffers from the same symptoms
Nuno Lopes58dc0b52008-12-10 16:01:22 +0000[diff] [blame]585as the previous one. It appears to work with ENABLE_OPTIMIZED=0 (the default).</p>
Mike Stumpfe095f32009-05-04 18:40:41 +0000[diff] [blame]586<p><b>Cygwin GCC 4.3.2 20080827 (beta) 2</b>:
587 Users <a href="http://llvm.org/PR4145">reported</a> various problems related
588 with link errors when using this GCC version.</p>
Chris Lattner478e71d2009-09-10 16:25:02 +0000[diff] [blame]589<p><b>Debian GCC 4.3.2 on X86</b>: Crashes building some files in LLVM 2.6.</p>
Nick Lewycky3bf2d032009-07-17 06:32:10 +0000[diff] [blame]590<p><b>GCC 4.3.3 (Debian 4.3.3-10) on ARM</b>: Miscompiles parts of LLVM 2.6
591when optimizations are turned on. The symptom is an infinite loop in
Chris Lattner478e71d2009-09-10 16:25:02 +0000[diff] [blame]592FoldingSetImpl::RemoveNode while running the code generator.</p>
Nick Lewycky256f9602010-10-07 22:30:47 +0000[diff] [blame]593<p><b>GCC 4.3.5 and GCC 4.4.5 on ARM</b>: These can miscompile <tt>value >>
5941</tt> even at -O0. A test failure in <tt>test/Assembler/alignstack.ll</tt> is
595one symptom of the problem.
Reid Spencer7a119082006-11-04 00:33:42 +0000[diff] [blame]596<p><b>GNU ld 2.16.X</b>. Some 2.16.X versions of the ld linker will produce very
597long warning messages complaining that some ".gnu.linkonce.t.*" symbol was
598defined in a discarded section. You can safely ignore these messages as they are
599erroneous and the linkage is correct. These messages disappear using ld
6002.17.</p>
Chris Lattnerdefb9fb2007-06-19 05:52:36 +0000[diff] [blame]601
602<p><b>GNU binutils 2.17</b>: Binutils 2.17 contains <a
603href="http://sourceware.org/bugzilla/show_bug.cgi?id=3111">a bug</a> which
604causes huge link times (minutes instead of seconds) when building LLVM. We
605recommend upgrading to a newer version (2.17.50.0.4 or later).</p>
606
Nick Lewyckybb2b5212009-03-03 05:41:16 +0000[diff] [blame]607<p><b>GNU Binutils 2.19.1 Gold</b>: This version of Gold contained
Nick Lewyckyd9f66e62009-02-25 06:29:47 +0000[diff] [blame]608<a href="http://sourceware.org/bugzilla/show_bug.cgi?id=9836">a bug</a>
609which causes intermittent failures when building LLVM with position independent
Nick Lewyckybb2b5212009-03-03 05:41:16 +0000[diff] [blame]610code. The symptom is an error about cyclic dependencies. We recommend
611upgrading to a newer version of Gold.</p>
Nick Lewyckyd9f66e62009-02-25 06:29:47 +0000[diff] [blame]612
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]613</div>
614
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]615</div>
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]616
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]617<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]618<h2>
619 <a name="starting">Getting Started with LLVM</a>
620</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]621<!-- *********************************************************************** -->
622
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]623<div>
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]624
625<p>The remainder of this guide is meant to get you up and running with
626LLVM and to give you some basic information about the LLVM environment.</p>
627
628<p>The later sections of this guide describe the <a
629href="#layout">general layout</a> of the the LLVM source tree, a <a
630href="#tutorial">simple example</a> using the LLVM tool chain, and <a
631href="#links">links</a> to find more information about LLVM or to get
632help via e-mail.</p>
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]633
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]634<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]635<h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]636 <a name="terminology">Terminology and Notation</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]637</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]638
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]639<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]640
641<p>Throughout this manual, the following names are used to denote paths
642specific to the local system and working environment. <i>These are not
643environment variables you need to set but just strings used in the rest
644of this document below</i>. In any of the examples below, simply replace
645each of these names with the appropriate pathname on your local system.
646All these paths are absolute:</p>
647
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]648<dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]649 <dt>SRC_ROOT
650 <dd>
651 This is the top level directory of the LLVM source tree.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]652 <br><br>
John Criswell0f6d7c02003-10-27 18:18:16 +0000[diff] [blame]653
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]654 <dt>OBJ_ROOT
655 <dd>
656 This is the top level directory of the LLVM object tree (i.e. the
657 tree where object files and compiled programs will be placed. It
658 can be the same as SRC_ROOT).
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]659 <br><br>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]660
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]661</dl>
662
663</div>
664
665<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]666<h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]667 <a name="environment">Setting Up Your Environment</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]668</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]669
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]670<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]671
672<p>
Misha Brukman8f0cad12005-02-03 18:28:08 +0000[diff] [blame]673In order to compile and use LLVM, you may need to set some environment
674variables.
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]675
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]676<dl>
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]677 <dt><tt>LLVM_LIB_SEARCH_PATH</tt>=<tt>/path/to/your/bitcode/libs</tt></dt>
Misha Brukman8f0cad12005-02-03 18:28:08 +0000[diff] [blame]678 <dd>[Optional] This environment variable helps LLVM linking tools find the
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]679 locations of your bitcode libraries. It is provided only as a
Misha Brukman8f0cad12005-02-03 18:28:08 +0000[diff] [blame]680 convenience since you can specify the paths using the -L options of the
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]681 tools and the C/C++ front-end will automatically use the bitcode files
John Criswell8bfe6a72005-05-18 19:43:33 +0000[diff] [blame]682 installed in its
Misha Brukman8f0cad12005-02-03 18:28:08 +0000[diff] [blame]683 <tt>lib</tt> directory.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]684</dl>
685
686</div>
687
688<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]689<h3>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]690 <a name="unpack">Unpacking the LLVM Archives</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]691</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]692
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]693<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]694
695<p>
696If you have the LLVM distribution, you will need to unpack it before you
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]697can begin to compile it. LLVM is distributed as a set of two files: the LLVM
John Criswell9e2485c2004-12-10 15:51:16 +0000[diff] [blame]698suite and the LLVM GCC front end compiled for your platform. There is an
699additional test suite that is optional. Each file is a TAR archive that is
700compressed with the gzip program.
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]701</p>
702
Misha Brukman3ce11032005-02-02 18:01:57 +0000[diff] [blame]703<p>The files are as follows, with <em>x.y</em> marking the version number:
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]704<dl>
Misha Brukman3ce11032005-02-02 18:01:57 +0000[diff] [blame]705 <dt><tt>llvm-x.y.tar.gz</tt></dt>
Misha Brukmanf00ddb02008-12-11 18:23:24 +0000[diff] [blame]706 <dd>Source release for the LLVM libraries and tools.<br></dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]707
Misha Brukman3ce11032005-02-02 18:01:57 +0000[diff] [blame]708 <dt><tt>llvm-test-x.y.tar.gz</tt></dt>
Andrew Trickbcf01162010-09-23 20:26:44 +0000[diff] [blame]709 <dd>Source release for the LLVM test-suite.</dd>
Misha Brukman8f9e6d62004-11-23 19:26:24 +0000[diff] [blame]710
Misha Brukmanccd02952008-12-29 19:38:58 +0000[diff] [blame]711 <dt><tt>llvm-gcc-4.2-x.y.source.tar.gz</tt></dt>
712 <dd>Source release of the llvm-gcc-4.2 front end. See README.LLVM in the root
Misha Brukmanf00ddb02008-12-11 18:23:24 +0000[diff] [blame]713 directory for build instructions.<br></dd>
Chris Lattner1ef81af2006-04-20 05:08:23 +0000[diff] [blame]714
Misha Brukmanccd02952008-12-29 19:38:58 +0000[diff] [blame]715 <dt><tt>llvm-gcc-4.2-x.y-platform.tar.gz</tt></dt>
716 <dd>Binary release of the llvm-gcc-4.2 front end for a specific platform.<br></dd>
Chris Lattner1ef81af2006-04-20 05:08:23 +0000[diff] [blame]717
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]718</dl>
719
720</div>
721
722<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]723<h3>
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]724 <a name="checkout">Checkout LLVM from Subversion</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]725</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]726
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]727<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]728
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]729<p>If you have access to our Subversion repository, you can get a fresh copy of
Chris Lattnerefdb3bc2009-04-25 22:24:49 +0000[diff] [blame]730the entire source code. All you need to do is check it out from Subversion as
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]731follows:</p>
732
733<ul>
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]734 <li><tt>cd <i>where-you-want-llvm-to-live</i></tt></li>
Anton Korobeynikov98044e42007-06-29 20:56:49 +0000[diff] [blame]735 <li>Read-Only: <tt>svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</tt></li>
736 <li>Read-Write:<tt>svn co https://user@llvm.org/svn/llvm-project/llvm/trunk
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]737 llvm</tt></li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]738</ul>
739
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]740
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]741<p>This will create an '<tt>llvm</tt>' directory in the current
742directory and fully populate it with the LLVM source code, Makefiles,
743test directories, and local copies of documentation files.</p>
744
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]745<p>If you want to get a specific release (as opposed to the most recent
Anton Korobeynikovd933fa92007-06-29 23:13:42 +0000[diff] [blame]746revision), you can checkout it from the '<tt>tags</tt>' directory (instead of
Anton Korobeynikovd724dc82007-06-30 00:00:57 +0000[diff] [blame]747'<tt>trunk</tt>'). The following releases are located in the following
Misha Brukman9474d012008-12-17 16:27:23 +0000[diff] [blame]748subdirectories of the '<tt>tags</tt>' directory:</p>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]749
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]750<ul>
Bill Wendlingc3b94fb2011-04-04 23:42:51 +0000[diff] [blame]751<li>Release 2.9: <b>RELEASE_29/final</b></li>
Bill Wendlingc44c2452010-10-06 23:50:30 +0000[diff] [blame]752<li>Release 2.8: <b>RELEASE_28</b></li>
Tanya Lattner994526c2010-10-06 05:36:01 +0000[diff] [blame]753<li>Release 2.7: <b>RELEASE_27</b></li>
Tanya Lattnerf08803b2009-10-23 06:20:06 +0000[diff] [blame]754<li>Release 2.6: <b>RELEASE_26</b></li>
Chris Lattnerefdb3bc2009-04-25 22:24:49 +0000[diff] [blame]755<li>Release 2.5: <b>RELEASE_25</b></li>
Misha Brukman9474d012008-12-17 16:27:23 +0000[diff] [blame]756<li>Release 2.4: <b>RELEASE_24</b></li>
Tanya Lattnerb37ef512008-06-09 06:02:09 +0000[diff] [blame]757<li>Release 2.3: <b>RELEASE_23</b></li>
Tanya Lattnerdd50f0f2008-02-12 02:42:55 +0000[diff] [blame]758<li>Release 2.2: <b>RELEASE_22</b></li>
Tanya Lattner76385652007-09-28 22:50:54 +0000[diff] [blame]759<li>Release 2.1: <b>RELEASE_21</b></li>
Tanya Lattner1dcadec2007-05-22 06:06:22 +0000[diff] [blame]760<li>Release 2.0: <b>RELEASE_20</b></li>
Tanya Lattner134693a2006-11-20 06:07:10 +0000[diff] [blame]761<li>Release 1.9: <b>RELEASE_19</b></li>
Tanya Lattnerf7b6be02006-11-20 06:04:46 +0000[diff] [blame]762<li>Release 1.8: <b>RELEASE_18</b></li>
Tanya Lattner993b9802006-04-20 04:35:34 +0000[diff] [blame]763<li>Release 1.7: <b>RELEASE_17</b></li>
John Criswellc0c186d2005-11-08 21:11:33 +0000[diff] [blame]764<li>Release 1.6: <b>RELEASE_16</b></li>
John Criswell75162552005-05-09 16:49:59 +0000[diff] [blame]765<li>Release 1.5: <b>RELEASE_15</b></li>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]766<li>Release 1.4: <b>RELEASE_14</b></li>
John Criswell18b74642004-08-16 14:51:33 +0000[diff] [blame]767<li>Release 1.3: <b>RELEASE_13</b></li>
Misha Brukmanb9be2bf2004-05-12 19:25:59 +0000[diff] [blame]768<li>Release 1.2: <b>RELEASE_12</b></li>
769<li>Release 1.1: <b>RELEASE_11</b></li>
770<li>Release 1.0: <b>RELEASE_1</b></li>
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]771</ul>
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]772
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]773<p>If you would like to get the LLVM test suite (a separate package as of 1.4),
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]774you get it from the Subversion repository:</p>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]775
776<div class="doc_code">
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]777<pre>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]778% cd llvm/projects
Andrew Trickbcf01162010-09-23 20:26:44 +0000[diff] [blame]779% svn co http://llvm.org/svn/llvm-project/test-suite/trunk test-suite
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]780</pre>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]781</div>
782
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]783<p>By placing it in the <tt>llvm/projects</tt>, it will be automatically
John Criswellc4ef3f22004-12-08 16:55:27 +0000[diff] [blame]784configured by the LLVM configure script as well as automatically updated when
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]785you run <tt>svn update</tt>.</p>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]786
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]787</div>
788
789<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]790<h3>
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]791 <a name="git_mirror">GIT mirror</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]792</h3>
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]793
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]794<div>
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]795
796<p>GIT mirrors are available for a number of LLVM subprojects. These mirrors
797 sync automatically with each Subversion commit and contain all necessary
798 git-svn marks (so, you can recreate git-svn metadata locally). Note that right
799 now mirrors reflect only <tt>trunk</tt> for each project. You can do the
NAKAMURA Takumi4d6deb02011-04-09 09:51:57 +0000[diff] [blame]800 read-only GIT clone of LLVM via:</p>
801
NAKAMURA Takumie65b7ec2011-07-20 23:37:51 +0000[diff] [blame]802<pre class="doc_code">
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]803git clone http://llvm.org/git/llvm.git
804</pre>
805
806<p>If you want to check out clang too, run:</p>
807
NAKAMURA Takumie65b7ec2011-07-20 23:37:51 +0000[diff] [blame]808<pre class="doc_code">
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]809git clone http://llvm.org/git/llvm.git
810cd llvm/tools
811git clone http://llvm.org/git/clang.git
812</pre>
813
NAKAMURA Takumi7a362f42011-08-12 07:48:01 +0000[diff] [blame]814<p>
815Since the upstream repository is in Subversion, you should use
816<tt>&quot;git pull --rebase&quot;</tt>
817instead of <tt>&quot;git pull&quot;</tt> to avoid generating a non-linear
818history in your clone.
819To configure <tt>&quot;git pull&quot;</tt> to pass <tt>--rebase</tt> by default
820on the master branch, run the following command:
821</p>
822
823<pre class="doc_code">
824git config branch.master.rebase true
825</pre>
826
NAKAMURA Takumi3c757ef2011-08-12 07:48:06 +0000[diff] [blame]827<h4>Sending patches with Git</h4>
828<div>
829<p>
830Please read <a href="DeveloperPolicy.html#patches">Developer Policy</a>, too.
831</p>
832
833<p>
834Assume <tt>master</tt> points the upstream and <tt>mybranch</tt> points your
835working branch, and <tt>mybranch</tt> is rebased onto <tt>master</tt>.
836At first you may check sanity of whitespaces:
837</p>
838
839<pre class="doc_code">
840git diff --check master..mybranch
841</pre>
842
843<p>
844The easiest way to generate a patch is as below:
845</p>
846
847<pre class="doc_code">
848git diff master..mybranch &gt; /path/to/mybranch.diff
849</pre>
850
851<p>
852It is a little different from svn-generated diff. git-diff-generated diff has
853prefixes like <tt>a/</tt> and <tt>b/</tt>. Don't worry, most developers might
854know it could be accepted with <tt>patch -p1 -N</tt>.
855</p>
856
857<p>
858But you may generate patchset with git-format-patch. It generates
859by-each-commit patchset. To generate patch files to attach to your article:
860</p>
861
862<pre class="doc_code">
863git format-patch --no-attach master..mybranch -o /path/to/your/patchset
864</pre>
865
866<p>
867If you would like to send patches directly, you may use git-send-email or
868git-imap-send. Here is an example to generate the patchset in Gmail's [Drafts].
869</p>
870
871<pre class="doc_code">
872git format-patch --attach master..mybranch --stdout | git imap-send
873</pre>
874
875<p>
876Then, your .git/config should have [imap] sections.
877</p>
878
879<pre class="doc_code">
880[imap]
881 host = imaps://imap.gmail.com
882 user = <em>your.gmail.account</em>@gmail.com
883 pass = <em>himitsu!</em>
884 port = 993
885 sslverify = false
886; in English
887 folder = "[Gmail]/Drafts"
888; example for Japanese, "Modified UTF-7" encoded.
889 folder = "[Gmail]/&amp;Tgtm+DBN-"
NAKAMURA Takumi0dd4f102011-11-06 06:51:58 +0000[diff] [blame]890; example for Traditional Chinese
891 folder = "[Gmail]/&amp;g0l6Pw-"
NAKAMURA Takumi3c757ef2011-08-12 07:48:06 +0000[diff] [blame]892</pre>
893
894</div>
895
NAKAMURA Takumi24ad1112011-08-12 07:47:55 +0000[diff] [blame]896<h4>For developers to work with git-svn</h4>
897<div>
898
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]899<p>To set up clone from which you can submit code using
900 <tt>git-svn</tt>, run:</p>
901
NAKAMURA Takumie65b7ec2011-07-20 23:37:51 +0000[diff] [blame]902<pre class="doc_code">
NAKAMURA Takumi947431e2011-07-20 22:58:28 +0000[diff] [blame]903git clone http://llvm.org/git/llvm.git
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]904cd llvm
905git svn init https://llvm.org/svn/llvm-project/llvm/trunk --username=&lt;username>
906git config svn-remote.svn.fetch :refs/remotes/origin/master
907git svn rebase -l # -l avoids fetching ahead of the git mirror.
908
909# If you have clang too:
910cd tools
NAKAMURA Takumi947431e2011-07-20 22:58:28 +0000[diff] [blame]911git clone http://llvm.org/git/clang.git
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]912cd clang
913git svn init https://llvm.org/svn/llvm-project/cfe/trunk --username=&lt;username>
914git config svn-remote.svn.fetch :refs/remotes/origin/master
915git svn rebase -l
916</pre>
917
918<p>To update this clone without generating git-svn tags that conflict
919with the upstream git repo, run:</p>
920
NAKAMURA Takumie65b7ec2011-07-20 23:37:51 +0000[diff] [blame]921<pre class="doc_code">
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]922git fetch && (cd tools/clang && git fetch) # Get matching revisions of both trees.
923git checkout master
924git svn rebase -l
925(cd tools/clang &&
926 git checkout master &&
927 git svn rebase -l)
928</pre>
929
930<p>This leaves your working directories on their master branches, so
931you'll need to <tt>checkout</tt> each working branch individually and
932<tt>rebase</tt> it on top of its parent branch. (Note: This script is
933intended for relative newbies to git. If you have more experience,
934you can likely improve on it.)</p>
935
936<p>The git-svn metadata can get out of sync after you mess around with
937branches and <code>dcommit</code>. When that happens, <code>git svn
938dcommit</code> stops working, complaining about files with uncommitted
939changes. The fix is to rebuild the metadata:</p>
940
NAKAMURA Takumie65b7ec2011-07-20 23:37:51 +0000[diff] [blame]941<pre class="doc_code">
Jeffrey Yasskin343c3a52011-07-19 00:20:54 +0000[diff] [blame]942rm -rf .git/svn
943git svn rebase -l
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]944</pre>
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]945
946</div>
947
NAKAMURA Takumi24ad1112011-08-12 07:47:55 +0000[diff] [blame]948</div>
949
Anton Korobeynikov46a98cf2011-02-01 20:08:28 +0000[diff] [blame]950<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]951<h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]952 <a name="config">Local LLVM Configuration</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]953</h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]954
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]955<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]956
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]957 <p>Once checked out from the Subversion repository, the LLVM suite source
958 code must be
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]959configured via the <tt>configure</tt> script. This script sets variables in the
960various <tt>*.in</tt> files, most notably <tt>llvm/Makefile.config</tt> and
961<tt>llvm/include/Config/config.h</tt>. It also populates <i>OBJ_ROOT</i> with
962the Makefiles needed to begin building LLVM.</p>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]963
964<p>The following environment variables are used by the <tt>configure</tt>
965script to configure the build system:</p>
966
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]967<table summary="LLVM configure script environment variables">
Reid Spencerd3f876c2004-11-01 08:19:36 +0000[diff] [blame]968 <tr><th>Variable</th><th>Purpose</th></tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]969 <tr>
970 <td>CC</td>
971 <td>Tells <tt>configure</tt> which C compiler to use. By default,
972 <tt>configure</tt> will look for the first GCC C compiler in
973 <tt>PATH</tt>. Use this variable to override
974 <tt>configure</tt>'s default behavior.</td>
975 </tr>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]976 <tr>
977 <td>CXX</td>
978 <td>Tells <tt>configure</tt> which C++ compiler to use. By default,
979 <tt>configure</tt> will look for the first GCC C++ compiler in
980 <tt>PATH</tt>. Use this variable to override
981 <tt>configure</tt>'s default behavior.</td>
982 </tr>
983</table>
984
985<p>The following options can be used to set or enable LLVM specific options:</p>
986
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]987<dl>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]988 <dt><i>--enable-optimized</i></dt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]989 <dd>
Chris Lattnerefdb3bc2009-04-25 22:24:49 +0000[diff] [blame]990 Enables optimized compilation (debugging symbols are removed
991 and GCC optimization flags are enabled). Note that this is the default
992 setting if you are using the LLVM distribution. The default behavior
993 of an Subversion checkout is to use an unoptimized build (also known as a
994 debug build).
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]995 <br><br>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]996 </dd>
Reid Spencer9d57b4d2005-12-21 03:46:45 +0000[diff] [blame]997 <dt><i>--enable-debug-runtime</i></dt>
998 <dd>
999 Enables debug symbols in the runtime libraries. The default is to strip
1000 debug symbols from the runtime libraries.
1001 </dd>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1002 <dt><i>--enable-jit</i></dt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1003 <dd>
John Criswelld000e1d2003-12-18 16:43:17 +0000[diff] [blame]1004 Compile the Just In Time (JIT) compiler functionality. This is not
1005 available
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1006 on all platforms. The default is dependent on platform, so it is best
1007 to explicitly enable it if you want it.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1008 <br><br>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1009 </dd>
Reid Spencer2dedcf52005-04-22 17:58:03 +0000[diff] [blame]1010 <dt><i>--enable-targets=</i><tt>target-option</tt></dt>
1011 <dd>Controls which targets will be built and linked into llc. The default
1012 value for <tt>target_options</tt> is "all" which builds and links all
1013 available targets. The value "host-only" can be specified to build only a
1014 native compiler (no cross-compiler targets available). The "native" target is
1015 selected as the target of the build host. You can also specify a comma
1016 separated list of target names that you want available in llc. The target
Misha Brukmanf00ddb02008-12-11 18:23:24 +0000[diff] [blame]1017 names use all lower case. The current set of targets is: <br>
Jia Liu060047f2012-02-10 04:58:24 +0000[diff] [blame]1018 <tt>arm, cbe, cpp, hexagon, mblaze, mips, mipsel, msp430, powerpc, ptx, sparc, spu, x86, x86_64, xcore</tt>.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1019 <br><br></dd>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1020 <dt><i>--enable-doxygen</i></dt>
1021 <dd>Look for the doxygen program and enable construction of doxygen based
1022 documentation from the source code. This is disabled by default because
1023 generating the documentation can take a long time and producess 100s of
1024 megabytes of output.</dd>
Anton Korobeynikov8cea37b2007-01-23 12:35:46 +0000[diff] [blame]1025 <dt><i>--with-udis86</i></dt>
1026 <dd>LLVM can use external disassembler library for various purposes (now it's
1027 used only for examining code produced by JIT). This option will enable usage
1028 of <a href="http://udis86.sourceforge.net/">udis86</a> x86 (both 32 and 64
1029 bits) disassembler library.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1030</dl>
1031
1032<p>To configure LLVM, follow these steps:</p>
1033
1034<ol>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1035 <li><p>Change directory into the object root directory:</p>
John Criswell0f6d7c02003-10-27 18:18:16 +0000[diff] [blame]1036
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1037 <div class="doc_code"><pre>% cd <i>OBJ_ROOT</i></pre></div></li>
1038
1039 <li><p>Run the <tt>configure</tt> script located in the LLVM source
1040 tree:</p>
1041
1042 <div class="doc_code">
1043 <pre>% <i>SRC_ROOT</i>/configure --prefix=/install/path [other options]</pre>
1044 </div></li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1045</ol>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1046
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1047</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1048
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1049<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1050<h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1051 <a name="compile">Compiling the LLVM Suite Source Code</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1052</h3>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1053
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1054<div>
John Criswell0b459202003-07-08 20:35:59 +0000[diff] [blame]1055
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1056<p>Once you have configured LLVM, you can build it. There are three types of
1057builds:</p>
John Criswell0b459202003-07-08 20:35:59 +0000[diff] [blame]1058
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1059<dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1060 <dt>Debug Builds
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1061 <dd>
Chris Lattnerefdb3bc2009-04-25 22:24:49 +0000[diff] [blame]1062 These builds are the default when one is using an Subversion checkout and
1063 types <tt>gmake</tt> (unless the <tt>--enable-optimized</tt> option was
1064 used during configuration). The build system will compile the tools and
1065 libraries with debugging information. To get a Debug Build using the
1066 LLVM distribution the <tt>--disable-optimized</tt> option must be passed
1067 to <tt>configure</tt>.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1068 <br><br>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1069
1070 <dt>Release (Optimized) Builds
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1071 <dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1072 These builds are enabled with the <tt>--enable-optimized</tt> option to
1073 <tt>configure</tt> or by specifying <tt>ENABLE_OPTIMIZED=1</tt> on the
1074 <tt>gmake</tt> command line. For these builds, the build system will
1075 compile the tools and libraries with GCC optimizations enabled and strip
1076 debugging information from the libraries and executables it generates.
Chris Lattnerefdb3bc2009-04-25 22:24:49 +0000[diff] [blame]1077 Note that Release Builds are default when using an LLVM distribution.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1078 <br><br>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1079
1080 <dt>Profile Builds
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1081 <dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1082 These builds are for use with profiling. They compile profiling
1083 information into the code for use with programs like <tt>gprof</tt>.
1084 Profile builds must be started by specifying <tt>ENABLE_PROFILING=1</tt>
1085 on the <tt>gmake</tt> command line.
1086</dl>
John Criswell7a73b802003-06-30 21:59:07 +0000[diff] [blame]1087
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1088<p>Once you have LLVM configured, you can build it by entering the
1089<i>OBJ_ROOT</i> directory and issuing the following command:</p>
John Criswell20d2d3e2003-10-10 14:26:14 +0000[diff] [blame]1090
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1091<div class="doc_code"><pre>% gmake</pre></div>
John Criswell20d2d3e2003-10-10 14:26:14 +0000[diff] [blame]1092
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]1093<p>If the build fails, please <a href="#brokengcc">check here</a> to see if you
John Criswell3d8ba512004-12-08 17:53:54 +0000[diff] [blame]1094are using a version of GCC that is known not to compile LLVM.</p>
Chris Lattner95e92582004-07-18 22:32:22 +0000[diff] [blame]1095
1096<p>
1097If you have multiple processors in your machine, you may wish to use some of
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1098the parallel build options provided by GNU Make. For example, you could use the
1099command:</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1100
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1101<div class="doc_code"><pre>% gmake -j2</pre></div>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1102
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1103<p>There are several special targets which are useful when working with the LLVM
1104source code:</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1105
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1106<dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1107 <dt><tt>gmake clean</tt>
1108 <dd>
1109 Removes all files generated by the build. This includes object files,
1110 generated C/C++ files, libraries, and executables.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1111 <br><br>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1112
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1113 <dt><tt>gmake dist-clean</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1114 <dd>
Misha Brukmanad38e962004-08-21 23:40:49 +0000[diff] [blame]1115 Removes everything that <tt>gmake clean</tt> does, but also removes files
1116 generated by <tt>configure</tt>. It attempts to return the source tree to the
1117 original state in which it was shipped.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1118 <br><br>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1119
Misha Brukmane51c3562004-08-23 20:25:33 +0000[diff] [blame]1120 <dt><tt>gmake install</tt>
1121 <dd>
John Criswell3d8ba512004-12-08 17:53:54 +0000[diff] [blame]1122 Installs LLVM header files, libraries, tools, and documentation in a
1123 hierarchy
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1124 under $PREFIX, specified with <tt>./configure --prefix=[dir]</tt>, which
1125 defaults to <tt>/usr/local</tt>.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1126 <br><br>
1127
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1128 <dt><tt>gmake -C runtime install-bytecode</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1129 <dd>
Reid Spencer7863c402004-11-11 07:30:27 +0000[diff] [blame]1130 Assuming you built LLVM into $OBJDIR, when this command is run, it will
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1131 install bitcode libraries into the GCC front end's bitcode library
1132 directory. If you need to update your bitcode libraries,
Misha Brukmanad38e962004-08-21 23:40:49 +0000[diff] [blame]1133 this is the target to use once you've built them.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1134 <br><br>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1135</dl>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1136
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1137<p>Please see the <a href="MakefileGuide.html">Makefile Guide</a> for further
1138details on these <tt>make</tt> targets and descriptions of other targets
1139available.</p>
1140
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1141<p>It is also possible to override default values from <tt>configure</tt> by
1142declaring variables on the command line. The following are some examples:</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1143
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1144<dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1145 <dt><tt>gmake ENABLE_OPTIMIZED=1</tt>
1146 <dd>
1147 Perform a Release (Optimized) build.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1148 <br><br>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1149
Reid Spencer004ba032006-04-09 23:45:38 +0000[diff] [blame]1150 <dt><tt>gmake ENABLE_OPTIMIZED=1 DISABLE_ASSERTIONS=1</tt>
Chris Lattnerd4651262006-03-21 01:10:57 +0000[diff] [blame]1151 <dd>
Reid Spencer004ba032006-04-09 23:45:38 +0000[diff] [blame]1152 Perform a Release (Optimized) build without assertions enabled.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1153 <br><br>
Chris Lattnerefdb3bc2009-04-25 22:24:49 +0000[diff] [blame]1154
1155 <dt><tt>gmake ENABLE_OPTIMIZED=0</tt>
1156 <dd>
1157 Perform a Debug build.
1158 <br><br>
Chris Lattnerd4651262006-03-21 01:10:57 +0000[diff] [blame]1159
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1160 <dt><tt>gmake ENABLE_PROFILING=1</tt>
1161 <dd>
1162 Perform a Profiling build.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1163 <br><br>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1164
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1165 <dt><tt>gmake VERBOSE=1</tt>
1166 <dd>
1167 Print what <tt>gmake</tt> is doing on standard output.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1168 <br><br>
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1169
1170 <dt><tt>gmake TOOL_VERBOSE=1</tt></dt>
1171 <dd>Ask each tool invoked by the makefiles to print out what it is doing on
John Criswell3d8ba512004-12-08 17:53:54 +0000[diff] [blame]1172 the standard output. This also implies <tt>VERBOSE=1</tt>.
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1173 <br><br></dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1174</dl>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1175
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1176<p>Every directory in the LLVM object tree includes a <tt>Makefile</tt> to build
1177it and any subdirectories that it contains. Entering any directory inside the
1178LLVM object tree and typing <tt>gmake</tt> should rebuild anything in or below
1179that directory that is out of date.</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1180
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1181</div>
John Criswell20d2d3e2003-10-10 14:26:14 +0000[diff] [blame]1182
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1183<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1184<h3>
Reid Spencerd30a9712006-07-27 06:41:31 +0000[diff] [blame]1185 <a name="cross-compile">Cross-Compiling LLVM</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1186</h3>
Reid Spencer17850ef2006-07-27 05:43:30 +0000[diff] [blame]1187
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1188<div>
Jim Grosbach5bea8222009-04-17 17:25:16 +0000[diff] [blame]1189 <p>It is possible to cross-compile LLVM itself. That is, you can create LLVM
1190 executables and libraries to be hosted on a platform different from the
1191 platform where they are build (a Canadian Cross build). To configure a
1192 cross-compile, supply the configure script with <tt>--build</tt> and
1193 <tt>--host</tt> options that are different. The values of these options must
1194 be legal target triples that your GCC compiler supports.</p>
1195
1196 <p>The result of such a build is executables that are not runnable on
1197 on the build host (--build option) but can be executed on the compile host
Reid Spencerd30a9712006-07-27 06:41:31 +0000[diff] [blame]1198 (--host option).</p>
Reid Spencer17850ef2006-07-27 05:43:30 +0000[diff] [blame]1199</div>
1200
1201<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1202<h3>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1203 <a name="objfiles">The Location of LLVM Object Files</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1204</h3>
John Criswell20d2d3e2003-10-10 14:26:14 +0000[diff] [blame]1205
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1206<div>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1207
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1208<p>The LLVM build system is capable of sharing a single LLVM source tree among
1209several LLVM builds. Hence, it is possible to build LLVM for several different
1210platforms or configurations using the same source tree.</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1211
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1212<p>This is accomplished in the typical autoconf manner:</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1213
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1214<ul>
1215 <li><p>Change directory to where the LLVM object files should live:</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1216
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1217 <div class="doc_code"><pre>% cd <i>OBJ_ROOT</i></pre></div></li>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1218
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1219 <li><p>Run the <tt>configure</tt> script found in the LLVM source
1220 directory:</p>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1221
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1222 <div class="doc_code"><pre>% <i>SRC_ROOT</i>/configure</pre></div></li>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1223</ul>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1224
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1225<p>The LLVM build will place files underneath <i>OBJ_ROOT</i> in directories
1226named after the build type:</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1227
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1228<dl>
Duncan Sands67f8a7b2010-07-08 08:27:18 +0000[diff] [blame]1229 <dt>Debug Builds with assertions enabled (the default)
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1230 <dd>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1231 <dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1232 <dt>Tools
Duncan Sands67f8a7b2010-07-08 08:27:18 +0000[diff] [blame]1233 <dd><tt><i>OBJ_ROOT</i>/Debug+Asserts/bin</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1234 <dt>Libraries
Duncan Sands67f8a7b2010-07-08 08:27:18 +0000[diff] [blame]1235 <dd><tt><i>OBJ_ROOT</i>/Debug+Asserts/lib</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1236 </dl>
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1237 <br><br>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1238
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1239 <dt>Release Builds
1240 <dd>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1241 <dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1242 <dt>Tools
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1243 <dd><tt><i>OBJ_ROOT</i>/Release/bin</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1244 <dt>Libraries
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1245 <dd><tt><i>OBJ_ROOT</i>/Release/lib</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1246 </dl>
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1247 <br><br>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1248
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1249 <dt>Profile Builds
1250 <dd>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1251 <dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1252 <dt>Tools
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1253 <dd><tt><i>OBJ_ROOT</i>/Profile/bin</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1254 <dt>Libraries
Reid Spencer66db92e2004-12-08 16:51:31 +0000[diff] [blame]1255 <dd><tt><i>OBJ_ROOT</i>/Profile/lib</tt>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1256 </dl>
1257</dl>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1258
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1259</div>
Chris Lattner7fe7f812002-07-24 19:51:14 +0000[diff] [blame]1260
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1261<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1262<h3>
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1263 <a name="optionalconfig">Optional Configuration Items</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1264</h3>
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1265
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1266<div>
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1267
1268<p>
Misha Brukman9106eca2005-02-03 22:25:23 +0000[diff] [blame]1269If you're running on a Linux system that supports the "<a
Bill Wendling22e37c32007-07-16 08:46:40 +0000[diff] [blame]1270href="http://www.tat.physik.uni-tuebingen.de/~rguenth/linux/binfmt_misc.html">binfmt_misc</a>"
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1271module, and you have root access on the system, you can set your system up to
Bill Wendling22e37c32007-07-16 08:46:40 +0000[diff] [blame]1272execute LLVM bitcode files directly. To do this, use commands like this (the
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1273first command may not be required if you are already using the module):</p>
1274
Misha Brukman9106eca2005-02-03 22:25:23 +0000[diff] [blame]1275<div class="doc_code">
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1276<pre>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1277$ mount -t binfmt_misc none /proc/sys/fs/binfmt_misc
Nick Lewyckye6b5a522009-11-04 06:15:28 +0000[diff] [blame]1278$ echo ':llvm:M::BC::/path/to/lli:' &gt; /proc/sys/fs/binfmt_misc/register
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1279$ chmod u+x hello.bc (if needed)
1280$ ./hello.bc
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1281</pre>
Misha Brukman9106eca2005-02-03 22:25:23 +0000[diff] [blame]1282</div>
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1283
1284<p>
Chris Lattner3bc3d3c2010-02-17 18:33:13 +0000[diff] [blame]1285This allows you to execute LLVM bitcode files directly. On Debian, you
NAKAMURA Takumi4d6deb02011-04-09 09:51:57 +0000[diff] [blame]1286can also use this command instead of the 'echo' command above:
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1287</p>
1288
Chris Lattner3bc3d3c2010-02-17 18:33:13 +0000[diff] [blame]1289<div class="doc_code">
1290<pre>
1291$ sudo update-binfmts --install llvm /path/to/lli --magic 'BC'
1292</pre>
1293</div>
1294
Chris Lattnera553f622004-03-25 20:38:40 +0000[diff] [blame]1295</div>
1296
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1297</div>
1298
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1299<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1300<h2>
1301 <a name="layout">Program Layout</a>
1302</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1303<!-- *********************************************************************** -->
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1304
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1305<div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1306
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1307<p>One useful source of information about the LLVM source base is the LLVM <a
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]1308href="http://www.doxygen.org/">doxygen</a> documentation available at <tt><a
Reid Spencer05fe4b02006-03-14 05:39:39 +0000[diff] [blame]1309href="http://llvm.org/doxygen/">http://llvm.org/doxygen/</a></tt>.
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1310The following is a brief introduction to code layout:</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1311
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1312<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1313<h3>
1314 <a name="examples"><tt>llvm/examples</tt></a>
1315</h3>
1316
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1317<div>
Reid Spencerc4b09ba2004-12-08 16:18:26 +0000[diff] [blame]1318 <p>This directory contains some simple examples of how to use the LLVM IR and
1319 JIT.</p>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1320</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1321
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1322<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1323<h3>
1324 <a name="include"><tt>llvm/include</tt></a>
1325</h3>
1326
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1327<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1328
1329<p>This directory contains public header files exported from the LLVM
1330library. The three main subdirectories of this directory are:</p>
1331
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1332<dl>
1333 <dt><tt><b>llvm/include/llvm</b></tt></dt>
1334 <dd>This directory contains all of the LLVM specific header files. This
1335 directory also has subdirectories for different portions of LLVM:
1336 <tt>Analysis</tt>, <tt>CodeGen</tt>, <tt>Target</tt>, <tt>Transforms</tt>,
1337 etc...</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1338
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1339 <dt><tt><b>llvm/include/llvm/Support</b></tt></dt>
1340 <dd>This directory contains generic support libraries that are provided with
1341 LLVM but not necessarily specific to LLVM. For example, some C++ STL utilities
1342 and a Command Line option processing library store their header files here.
1343 </dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1344
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1345 <dt><tt><b>llvm/include/llvm/Config</b></tt></dt>
1346 <dd>This directory contains header files configured by the <tt>configure</tt>
1347 script. They wrap "standard" UNIX and C header files. Source code can
1348 include these header files which automatically take care of the conditional
1349 #includes that the <tt>configure</tt> script generates.</dd>
1350</dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1351</div>
1352
1353<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1354<h3>
1355 <a name="lib"><tt>llvm/lib</tt></a>
1356</h3>
1357
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1358<div>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1359
1360<p>This directory contains most of the source files of the LLVM system. In LLVM,
1361almost all code exists in libraries, making it very easy to share code among the
1362different <a href="#tools">tools</a>.</p>
1363
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1364<dl>
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1365 <dt><tt><b>llvm/lib/VMCore/</b></tt></dt>
1366 <dd> This directory holds the core LLVM source files that implement core
1367 classes like Instruction and BasicBlock.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1368
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1369 <dt><tt><b>llvm/lib/AsmParser/</b></tt></dt>
1370 <dd>This directory holds the source code for the LLVM assembly language parser
1371 library.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1372
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1373 <dt><tt><b>llvm/lib/BitCode/</b></tt></dt>
1374 <dd>This directory holds code for reading and write LLVM bitcode.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1375
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1376 <dt><tt><b>llvm/lib/Analysis/</b></tt><dd>This directory contains a variety of
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1377 different program analyses, such as Dominator Information, Call Graphs,
1378 Induction Variables, Interval Identification, Natural Loop Identification,
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1379 etc.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1380
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1381 <dt><tt><b>llvm/lib/Transforms/</b></tt></dt>
1382 <dd> This directory contains the source code for the LLVM to LLVM program
1383 transformations, such as Aggressive Dead Code Elimination, Sparse Conditional
1384 Constant Propagation, Inlining, Loop Invariant Code Motion, Dead Global
1385 Elimination, and many others.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1386
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1387 <dt><tt><b>llvm/lib/Target/</b></tt></dt>
1388 <dd> This directory contains files that describe various target architectures
Chris Lattner2a607032006-04-20 17:42:23 +0000[diff] [blame]1389 for code generation. For example, the <tt>llvm/lib/Target/X86</tt>
1390 directory holds the X86 machine description while
Eric Christophera443e5b2012-03-23 05:50:46 +0000[diff] [blame]1391 <tt>llvm/lib/Target/ARM</tt> implements the ARM backend.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1392
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1393 <dt><tt><b>llvm/lib/CodeGen/</b></tt></dt>
1394 <dd> This directory contains the major parts of the code generator: Instruction
1395 Selector, Instruction Scheduling, and Register Allocation.</dd>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1396
NAKAMURA Takumia8b3e182011-04-05 08:24:15 +0000[diff] [blame]1397 <dt><tt><b>llvm/lib/MC/</b></tt></dt>
1398 <dd>(FIXME: T.B.D.)</dd>
1399
1400 <!--FIXME: obsoleted -->
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1401 <dt><tt><b>llvm/lib/Debugger/</b></tt></dt>
1402 <dd> This directory contains the source level debugger library that makes
1403 it possible to instrument LLVM programs so that a debugger could identify
1404 source code locations at which the program is executing.</dd>
1405
1406 <dt><tt><b>llvm/lib/ExecutionEngine/</b></tt></dt>
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1407 <dd> This directory contains libraries for executing LLVM bitcode directly
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1408 at runtime in both interpreted and JIT compiled fashions.</dd>
1409
1410 <dt><tt><b>llvm/lib/Support/</b></tt></dt>
Daniel Dunbar2c607b62011-10-11 20:02:52 +0000[diff] [blame]1411 <dd> This directory contains the source code that corresponds to the header
1412 files located in <tt>llvm/include/ADT/</tt>
1413 and <tt>llvm/include/Support/</tt>.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1414</dl>
John Criswell7a73b802003-06-30 21:59:07 +0000[diff] [blame]1415
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1416</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1417
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1418<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1419<h3>
1420 <a name="projects"><tt>llvm/projects</tt></a>
1421</h3>
1422
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1423<div>
Reid Spencerc4b09ba2004-12-08 16:18:26 +0000[diff] [blame]1424 <p>This directory contains projects that are not strictly part of LLVM but are
1425 shipped with LLVM. This is also the directory where you should create your own
1426 LLVM-based projects. See <tt>llvm/projects/sample</tt> for an example of how
Chris Lattner4630e4d2008-08-11 06:13:31 +0000[diff] [blame]1427 to set up your own project.</p>
Reid Spencerc4b09ba2004-12-08 16:18:26 +0000[diff] [blame]1428</div>
1429
1430<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1431<h3>
1432 <a name="runtime"><tt>llvm/runtime</tt></a>
1433</h3>
1434
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1435<div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1436
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1437<p>This directory contains libraries which are compiled into LLVM bitcode and
Chad Rosier7497a9a2012-02-26 22:26:37 +0000[diff] [blame]1438used when linking programs with the Clang front end. Most of these libraries are
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1439skeleton versions of real libraries; for example, libc is a stripped down
1440version of glibc.</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1441
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1442<p>Unlike the rest of the LLVM suite, this directory needs the LLVM GCC front
1443end to compile.</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1444
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1445</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1446
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1447<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1448<h3>
1449 <a name="test"><tt>llvm/test</tt></a>
1450</h3>
1451
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1452<div>
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1453 <p>This directory contains feature and regression tests and other basic sanity
1454 checks on the LLVM infrastructure. These are intended to run quickly and cover
1455 a lot of territory without being exhaustive.</p>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1456</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1457
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1458<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1459<h3>
1460 <a name="test-suite"><tt>test-suite</tt></a>
1461</h3>
1462
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1463<div>
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]1464 <p>This is not a directory in the normal llvm module; it is a separate
1465 Subversion
1466 module that must be checked out (usually to <tt>projects/test-suite</tt>).
1467 This
John Criswell3d8ba512004-12-08 17:53:54 +0000[diff] [blame]1468 module contains a comprehensive correctness, performance, and benchmarking
1469 test
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]1470 suite for LLVM. It is a separate Subversion module because not every LLVM
1471 user is
John Criswell838bce52005-05-09 16:39:27 +0000[diff] [blame]1472 interested in downloading or building such a comprehensive test suite. For
1473 further details on this test suite, please see the
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1474 <a href="TestingGuide.html">Testing Guide</a> document.</p>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1475</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1476
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1477<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1478<h3>
1479 <a name="tools"><tt>llvm/tools</tt></a>
1480</h3>
1481
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1482<div>
John Criswell20d2d3e2003-10-10 14:26:14 +0000[diff] [blame]1483
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1484<p>The <b>tools</b> directory contains the executables built out of the
1485libraries above, which form the main part of the user interface. You can
Duncan Sands7e7ae5a2010-02-18 14:08:13 +0000[diff] [blame]1486always get help for a tool by typing <tt>tool_name -help</tt>. The
Misha Brukmane12215f2004-11-15 23:20:51 +0000[diff] [blame]1487following is a brief introduction to the most important tools. More detailed
1488information is in the <a href="CommandGuide/index.html">Command Guide</a>.</p>
John Criswell20d2d3e2003-10-10 14:26:14 +0000[diff] [blame]1489
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1490<dl>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1491
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1492 <dt><tt><b>bugpoint</b></tt></dt>
1493 <dd><tt>bugpoint</tt> is used to debug
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1494 optimization passes or code generation backends by narrowing down the
1495 given test case to the minimum number of passes and/or instructions that
1496 still cause a problem, whether it is a crash or miscompilation. See <a
1497 href="HowToSubmitABug.html">HowToSubmitABug.html</a> for more information
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1498 on using <tt>bugpoint</tt>.</dd>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1499
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1500 <dt><tt><b>llvm-ar</b></tt></dt>
1501 <dd>The archiver produces an archive containing
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1502 the given LLVM bitcode files, optionally with an index for faster
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1503 lookup.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1504
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1505 <dt><tt><b>llvm-as</b></tt></dt>
1506 <dd>The assembler transforms the human readable LLVM assembly to LLVM
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1507 bitcode.</dd>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1508
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1509 <dt><tt><b>llvm-dis</b></tt></dt>
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1510 <dd>The disassembler transforms the LLVM bitcode to human readable
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1511 LLVM assembly.</dd>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1512
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1513 <dt><tt><b>llvm-link</b></tt></dt>
1514 <dd><tt>llvm-link</tt>, not surprisingly, links multiple LLVM modules into
1515 a single program.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1516
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1517 <dt><tt><b>lli</b></tt></dt>
1518 <dd><tt>lli</tt> is the LLVM interpreter, which
Nick Lewycky64270d52007-12-03 01:58:01 +0000[diff] [blame]1519 can directly execute LLVM bitcode (although very slowly...). For architectures
1520 that support it (currently x86, Sparc, and PowerPC), by default, <tt>lli</tt>
1521 will function as a Just-In-Time compiler (if the functionality was compiled
1522 in), and will execute the code <i>much</i> faster than the interpreter.</dd>
Misha Brukmanef0ad412003-10-06 19:23:34 +0000[diff] [blame]1523
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1524 <dt><tt><b>llc</b></tt></dt>
1525 <dd> <tt>llc</tt> is the LLVM backend compiler, which
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1526 translates LLVM bitcode to a native code assembly file or to C code (with
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1527 the -march=c option).</dd>
Misha Brukmanef0ad412003-10-06 19:23:34 +0000[diff] [blame]1528
Reid Spencerd4694f92004-12-22 06:29:07 +0000[diff] [blame]1529 <dt><tt><b>llvm-gcc</b></tt></dt>
Reid Spencer434262a2007-02-09 15:59:08 +0000[diff] [blame]1530 <dd><tt>llvm-gcc</tt> is a GCC-based C frontend that has been retargeted to
1531 use LLVM as its backend instead of GCC's RTL backend. It can also emit LLVM
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1532 bitcode or assembly (with the <tt>-emit-llvm</tt> option) instead of the
Reid Spencer434262a2007-02-09 15:59:08 +0000[diff] [blame]1533 usual machine code output. It works just like any other GCC compiler,
1534 taking the typical <tt>-c, -S, -E, -o</tt> options that are typically used.
1535 Additionally, the the source code for <tt>llvm-gcc</tt> is available as a
John Criswell9c29bfb2007-06-29 19:12:31 +0000[diff] [blame]1536 separate Subversion module.</dd>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1537
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1538 <dt><tt><b>opt</b></tt></dt>
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1539 <dd><tt>opt</tt> reads LLVM bitcode, applies a series of LLVM to LLVM
Reid Spencer84f82f72006-08-28 00:34:19 +0000[diff] [blame]1540 transformations (which are specified on the command line), and then outputs
Duncan Sands7e7ae5a2010-02-18 14:08:13 +0000[diff] [blame]1541 the resultant bitcode. The '<tt>opt -help</tt>' command is a good way to
Misha Brukmanf00ddb02008-12-11 18:23:24 +0000[diff] [blame]1542 get a list of the program transformations available in LLVM.<br>
Reid Spencer84f82f72006-08-28 00:34:19 +0000[diff] [blame]1543 <dd><tt>opt</tt> can also be used to run a specific analysis on an input
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1544 LLVM bitcode file and print out the results. It is primarily useful for
Reid Spencer84f82f72006-08-28 00:34:19 +0000[diff] [blame]1545 debugging analyses, or familiarizing yourself with what an analysis does.</dd>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1546</dl>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1547</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1548
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1549<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1550<h3>
1551 <a name="utils"><tt>llvm/utils</tt></a>
1552</h3>
1553
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1554<div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1555
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1556<p>This directory contains utilities for working with LLVM source code, and some
1557of the utilities are actually required as part of the build process because they
1558are code generators for parts of LLVM infrastructure.</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1559
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1560<dl>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1561 <dt><tt><b>codegen-diff</b></tt> <dd><tt>codegen-diff</tt> is a script
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1562 that finds differences between code that LLC generates and code that LLI
1563 generates. This is a useful tool if you are debugging one of them,
1564 assuming that the other generates correct output. For the full user
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1565 manual, run <tt>`perldoc codegen-diff'</tt>.<br><br>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1566
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1567 <dt><tt><b>emacs/</b></tt> <dd>The <tt>emacs</tt> directory contains
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1568 syntax-highlighting files which will work with Emacs and XEmacs editors,
1569 providing syntax highlighting support for LLVM assembly files and TableGen
1570 description files. For information on how to use the syntax files, consult
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1571 the <tt>README</tt> file in that directory.<br><br>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1572
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1573 <dt><tt><b>getsrcs.sh</b></tt> <dd>The <tt>getsrcs.sh</tt> script finds
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1574 and outputs all non-generated source files, which is useful if one wishes
1575 to do a lot of development across directories and does not want to
1576 individually find each file. One way to use it is to run, for example:
1577 <tt>xemacs `utils/getsources.sh`</tt> from the top of your LLVM source
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1578 tree.<br><br>
1579
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1580 <dt><tt><b>llvmgrep</b></tt></dt>
1581 <dd>This little tool performs an "egrep -H -n" on each source file in LLVM and
1582 passes to it a regular expression provided on <tt>llvmgrep</tt>'s command
1583 line. This is a very efficient way of searching the source base for a
1584 particular regular expression.</dd>
1585
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1586 <dt><tt><b>makellvm</b></tt> <dd>The <tt>makellvm</tt> script compiles all
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1587 files in the current directory and then compiles and links the tool that
1588 is the first argument. For example, assuming you are in the directory
1589 <tt>llvm/lib/Target/Sparc</tt>, if <tt>makellvm</tt> is in your path,
1590 simply running <tt>makellvm llc</tt> will make a build of the current
1591 directory, switch to directory <tt>llvm/tools/llc</tt> and build it,
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1592 causing a re-linking of LLC.<br><br>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1593
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1594 <dt><tt><b>TableGen/</b></tt> <dd>The <tt>TableGen</tt> directory contains
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1595 the tool used to generate register descriptions, instruction set
1596 descriptions, and even assemblers from common TableGen description
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1597 files.<br><br>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1598
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1599 <dt><tt><b>vim/</b></tt> <dd>The <tt>vim</tt> directory contains
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1600 syntax-highlighting files which will work with the VIM editor, providing
1601 syntax highlighting support for LLVM assembly files and TableGen
1602 description files. For information on how to use the syntax files, consult
Chris Lattner9abd8af2006-09-07 04:19:09 +0000[diff] [blame]1603 the <tt>README</tt> file in that directory.<br><br>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1604
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1605</dl>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1606
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1607</div>
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1608
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1609</div>
1610
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1611<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1612<h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1613 <a name="tutorial">An Example Using the LLVM Tool Chain</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1614</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1615<!-- *********************************************************************** -->
Misha Brukmanc103adf2003-08-11 18:45:46 +0000[diff] [blame]1616
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1617<div>
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1618<p>This section gives an example of using LLVM with the Clang front end.</p>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1619
1620<!-- ======================================================================= -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1621<h3>
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1622 <a name="tutorial4">Example with clang</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1623</h3>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1624
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1625<div>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1626
1627<ol>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1628 <li><p>First, create a simple C file, name it 'hello.c':</p>
1629
1630<div class="doc_code">
1631<pre>
1632#include &lt;stdio.h&gt;
1633
1634int main() {
1635 printf("hello world\n");
1636 return 0;
1637}
1638</pre></div></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1639
1640 <li><p>Next, compile the C file into a native executable:</p>
1641
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1642 <div class="doc_code"><pre>% clang hello.c -o hello</pre></div>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1643
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1644 <p>Note that clang works just like GCC by default. The standard -S and
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1645 -c arguments work as usual (producing a native .s or .o file,
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1646 respectively).</p></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1647
Gabor Greif04367bf2007-07-06 22:07:22 +0000[diff] [blame]1648 <li><p>Next, compile the C file into a LLVM bitcode file:</p>
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1649
1650 <div class="doc_code">
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1651 <pre>% clang -O3 -emit-llvm hello.c -c -o hello.bc</pre></div>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1652
1653 <p>The -emit-llvm option can be used with the -S or -c options to emit an
1654 LLVM ".ll" or ".bc" file (respectively) for the code. This allows you
1655 to use the <a href="CommandGuide/index.html">standard LLVM tools</a> on
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1656 the bitcode file.</p></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1657
1658 <li><p>Run the program in both forms. To run the program, use:</p>
1659
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1660 <div class="doc_code"><pre>% ./hello</pre></div>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1661
1662 <p>and</p>
1663
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1664 <div class="doc_code"><pre>% lli hello.bc</pre></div>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1665
1666 <p>The second examples shows how to invoke the LLVM JIT, <a
Chris Lattner6e3b7c22006-08-14 20:51:35 +0000[diff] [blame]1667 href="CommandGuide/html/lli.html">lli</a>.</p></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1668
1669 <li><p>Use the <tt>llvm-dis</tt> utility to take a look at the LLVM assembly
1670 code:</p>
1671
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1672<div class="doc_code">
1673<pre>llvm-dis &lt; hello.bc | less</pre>
1674</div></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1675
1676 <li><p>Compile the program to native assembly using the LLC code
1677 generator:</p>
1678
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1679 <div class="doc_code"><pre>% llc hello.bc -o hello.s</pre></div></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1680
1681 <li><p>Assemble the native assembly language file into a program:</p>
1682
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1683<div class="doc_code">
1684<pre>
1685<b>Solaris:</b> % /opt/SUNWspro/bin/cc -xarch=v9 hello.s -o hello.native
1686
1687<b>Others:</b> % gcc hello.s -o hello.native
1688</pre>
1689</div></li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1690
1691 <li><p>Execute the native code program:</p>
1692
Bill Wendling77f74692007-07-16 08:44:39 +0000[diff] [blame]1693 <div class="doc_code"><pre>% ./hello.native</pre></div>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1694
Chad Rosier372b8222012-02-26 21:31:25 +0000[diff] [blame]1695 <p>Note that using clang to compile directly to native code (i.e. when
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1696 the -emit-llvm option is not present) does steps 6/7/8 for you.</p>
Chris Lattner6e3b7c22006-08-14 20:51:35 +0000[diff] [blame]1697 </li>
Chris Lattner5907d402006-08-14 20:45:25 +0000[diff] [blame]1698
1699</ol>
1700
1701</div>
1702
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1703</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1704
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1705<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1706<h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1707 <a name="problems">Common Problems</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1708</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1709<!-- *********************************************************************** -->
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1710
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1711<div>
John Criswellce760f62003-07-03 16:01:38 +0000[diff] [blame]1712
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1713<p>If you are having problems building or using LLVM, or if you have any other
1714general questions about LLVM, please consult the <a href="FAQ.html">Frequently
1715Asked Questions</a> page.</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1716
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1717</div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1718
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1719<!-- *********************************************************************** -->
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1720<h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1721 <a name="links">Links</a>
NAKAMURA Takumi05d02652011-04-18 23:59:50 +0000[diff] [blame]1722</h2>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1723<!-- *********************************************************************** -->
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1724
NAKAMURA Takumif5af6ad2011-04-23 00:30:22 +0000[diff] [blame]1725<div>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1726
Bill Wendling2d4c2152008-07-22 01:10:25 +0000[diff] [blame]1727<p>This document is just an <b>introduction</b> on how to use LLVM to do
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1728some simple things... there are many more interesting and complicated things
1729that you can do that aren't documented here (but we'll gladly accept a patch
1730if you want to write something up!). For more information about LLVM, check
1731out:</p>
John Criswell85ed3612003-06-12 19:34:44 +0000[diff] [blame]1732
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1733<ul>
Reid Spencer05fe4b02006-03-14 05:39:39 +0000[diff] [blame]1734 <li><a href="http://llvm.org/">LLVM homepage</a></li>
1735 <li><a href="http://llvm.org/doxygen/">LLVM doxygen tree</a></li>
1736 <li><a href="http://llvm.org/docs/Projects.html">Starting a Project
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1737 that Uses LLVM</a></li>
1738</ul>
1739
1740</div>
1741
1742<!-- *********************************************************************** -->
1743
1744<hr>
Misha Brukman142207b2003-11-22 01:30:01 +0000[diff] [blame]1745<address>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1746 <a href="http://jigsaw.w3.org/css-validator/check/referer"><img
Misha Brukman44408702008-12-11 17:34:48 +0000[diff] [blame]1747 src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS"></a>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1748 <a href="http://validator.w3.org/check/referer"><img
Misha Brukmanf00ddb02008-12-11 18:23:24 +0000[diff] [blame]1749 src="http://www.w3.org/Icons/valid-html401-blue" alt="Valid HTML 4.01"></a>
Misha Brukman54111c42004-01-20 00:20:17 +0000[diff] [blame]1750
Misha Brukman142207b2003-11-22 01:30:01 +0000[diff] [blame]1751 <a href="mailto:sabre@nondot.org">Chris Lattner</a><br>
Reid Spencer77d90192004-09-05 20:50:22 +0000[diff] [blame]1752 <a href="http://llvm.x10sys.com/rspencer/">Reid Spencer</a><br>
NAKAMURA Takumib9a33632011-04-09 02:13:37 +0000[diff] [blame]1753 <a href="http://llvm.org/">The LLVM Compiler Infrastructure</a><br>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1754 Last modified: $Date$
Misha Brukman142207b2003-11-22 01:30:01 +0000[diff] [blame]1755</address>
Misha Brukman00c73d22003-11-07 19:43:14 +0000[diff] [blame]1756</body>
Guochun Shif4688a82002-07-17 23:05:56 +0000[diff] [blame]1757</html>