Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" |
| 2 | "http://www.w3.org/TR/html4/strict.dtd"> |
| 3 | <html> |
| 4 | <head> |
Reid Spencer | 6454ed3 | 2004-11-18 18:38:58 +0000 | [diff] [blame] | 5 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 6 | <link rel="stylesheet" href="llvm.css" type="text/css"> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 7 | <title>LLVM 3.0 Release Notes</title> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 8 | </head> |
| 9 | <body> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 10 | |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 11 | <h1>LLVM 3.0 Release Notes</h1> |
Mikhail Glushenkov | ea65d7d | 2008-10-13 02:08:34 +0000 | [diff] [blame] | 12 | |
Chris Lattner | 0e464a9 | 2010-03-17 04:02:39 +0000 | [diff] [blame] | 13 | <img align=right src="http://llvm.org/img/DragonSmall.png" |
Gabor Greif | ee2187a | 2010-04-22 10:21:43 +0000 | [diff] [blame] | 14 | width="136" height="136" alt="LLVM Dragon Logo"> |
Chris Lattner | 0e464a9 | 2010-03-17 04:02:39 +0000 | [diff] [blame] | 15 | |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 16 | <ol> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 17 | <li><a href="#intro">Introduction</a></li> |
Chris Lattner | 96a445e | 2008-10-13 18:01:01 +0000 | [diff] [blame] | 18 | <li><a href="#subproj">Sub-project Status Update</a></li> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 19 | <li><a href="#externalproj">External Projects Using LLVM 3.0</a></li> |
| 20 | <li><a href="#whatsnew">What's New in LLVM 3.0?</a></li> |
Chris Lattner | 4b538b9 | 2004-04-30 22:17:12 +0000 | [diff] [blame] | 21 | <li><a href="GettingStarted.html">Installation Instructions</a></li> |
Dan Gohman | 44aa921 | 2008-10-14 16:23:02 +0000 | [diff] [blame] | 22 | <li><a href="#knownproblems">Known Problems</a></li> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 23 | <li><a href="#additionalinfo">Additional Information</a></li> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 24 | </ol> |
| 25 | |
Chris Lattner | 7911ce2 | 2004-05-23 21:07:27 +0000 | [diff] [blame] | 26 | <div class="doc_author"> |
NAKAMURA Takumi | b9a3363 | 2011-04-09 02:13:37 +0000 | [diff] [blame] | 27 | <p>Written by the <a href="http://llvm.org/">LLVM Team</a></p> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 28 | </div> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 29 | |
Chris Lattner | 49123fd | 2011-04-06 06:29:50 +0000 | [diff] [blame] | 30 | <!-- |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 31 | <h1 style="color:red">These are in-progress notes for the upcoming LLVM 3.0 |
Jeffrey Yasskin | bec4877 | 2010-01-28 01:14:43 +0000 | [diff] [blame] | 32 | release.<br> |
| 33 | You may prefer the |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 34 | <a href="http://llvm.org/releases/2.9/docs/ReleaseNotes.html">LLVM 2.9 |
Dan Gohman | b44f6c6 | 2010-05-03 23:51:05 +0000 | [diff] [blame] | 35 | Release Notes</a>.</h1> |
Chris Lattner | 49123fd | 2011-04-06 06:29:50 +0000 | [diff] [blame] | 36 | --> |
Jeffrey Yasskin | bec4877 | 2010-01-28 01:14:43 +0000 | [diff] [blame] | 37 | |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 38 | <!-- *********************************************************************** --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 39 | <h2> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 40 | <a name="intro">Introduction</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 41 | </h2> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 42 | <!-- *********************************************************************** --> |
| 43 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 44 | <div> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 45 | |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 46 | <p>This document contains the release notes for the LLVM Compiler |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 47 | Infrastructure, release 3.0. Here we describe the status of LLVM, including |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 48 | major improvements from the previous release and significant known problems. |
Mikhail Glushenkov | f795ef0 | 2009-03-01 18:09:47 +0000 | [diff] [blame] | 49 | All LLVM releases may be downloaded from the <a |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 50 | href="http://llvm.org/releases/">LLVM releases web site</a>.</p> |
Chris Lattner | 1909261 | 2003-10-02 16:38:05 +0000 | [diff] [blame] | 51 | |
Chris Lattner | 7506b1d | 2004-12-07 08:04:13 +0000 | [diff] [blame] | 52 | <p>For more information about LLVM, including information about the latest |
Chris Lattner | c463b27 | 2005-10-29 07:07:09 +0000 | [diff] [blame] | 53 | release, please check out the <a href="http://llvm.org/">main LLVM |
Chris Lattner | 47ad72c | 2003-10-07 21:38:31 +0000 | [diff] [blame] | 54 | web site</a>. If you have questions or comments, the <a |
Chris Lattner | c66bfef | 2010-03-17 04:41:49 +0000 | [diff] [blame] | 55 | href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVM Developer's |
| 56 | Mailing List</a> is a good place to send them.</p> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 57 | |
Mikhail Glushenkov | ea65d7d | 2008-10-13 02:08:34 +0000 | [diff] [blame] | 58 | <p>Note that if you are reading this file from a Subversion checkout or the |
Chris Lattner | 8497764 | 2007-09-21 03:54:09 +0000 | [diff] [blame] | 59 | main LLVM web page, this document applies to the <i>next</i> release, not the |
Gabor Greif | fa933f8 | 2008-10-14 11:00:32 +0000 | [diff] [blame] | 60 | current one. To see the release notes for a specific release, please see the |
Chris Lattner | 8497764 | 2007-09-21 03:54:09 +0000 | [diff] [blame] | 61 | <a href="http://llvm.org/releases/">releases page</a>.</p> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 62 | |
| 63 | </div> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 64 | |
Chris Lattner | e4dc196 | 2011-04-05 23:22:33 +0000 | [diff] [blame] | 65 | <!-- Features that need text if they're finished for 3.1: |
| 66 | ARM EHABI |
Chris Lattner | 914ce46 | 2010-04-22 06:28:20 +0000 | [diff] [blame] | 67 | combiner-aa? |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 68 | strong phi elim |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 69 | loop dependence analysis |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 70 | CorrelatedValuePropagation |
Chris Lattner | e4dc196 | 2011-04-05 23:22:33 +0000 | [diff] [blame] | 71 | lib/Transforms/IPO/MergeFunctions.cpp => consider for 3.1. |
Chris Lattner | acce85d | 2008-02-10 07:46:44 +0000 | [diff] [blame] | 72 | --> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 73 | |
Chris Lattner | 96a445e | 2008-10-13 18:01:01 +0000 | [diff] [blame] | 74 | <!-- *********************************************************************** --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 75 | <h2> |
Chris Lattner | 96a445e | 2008-10-13 18:01:01 +0000 | [diff] [blame] | 76 | <a name="subproj">Sub-project Status Update</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 77 | </h2> |
Chris Lattner | 96a445e | 2008-10-13 18:01:01 +0000 | [diff] [blame] | 78 | <!-- *********************************************************************** --> |
Chris Lattner | ea34f64 | 2008-06-08 21:34:41 +0000 | [diff] [blame] | 79 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 80 | <div> |
Chris Lattner | 8348b47 | 2008-06-08 21:58:17 +0000 | [diff] [blame] | 81 | <p> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 82 | The LLVM 3.0 distribution currently consists of code from the core LLVM |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 83 | repository (which roughly includes the LLVM optimizers, code generators |
| 84 | and supporting tools), the Clang repository and the llvm-gcc repository. In |
| 85 | addition to this code, the LLVM Project includes other sub-projects that are in |
| 86 | development. Here we include updates on these subprojects. |
Bill Wendling | 63d8c55 | 2009-03-02 04:28:57 +0000 | [diff] [blame] | 87 | </p> |
Chris Lattner | 96a445e | 2008-10-13 18:01:01 +0000 | [diff] [blame] | 88 | |
Chris Lattner | 8348b47 | 2008-06-08 21:58:17 +0000 | [diff] [blame] | 89 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 90 | <h3> |
Chris Lattner | fb97b2d | 2008-10-13 18:11:54 +0000 | [diff] [blame] | 91 | <a name="clang">Clang: C/C++/Objective-C Frontend Toolkit</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 92 | </h3> |
Chris Lattner | 8348b47 | 2008-06-08 21:58:17 +0000 | [diff] [blame] | 93 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 94 | <div> |
Chris Lattner | 8348b47 | 2008-06-08 21:58:17 +0000 | [diff] [blame] | 95 | |
Chris Lattner | 095539f | 2010-04-26 17:42:18 +0000 | [diff] [blame] | 96 | <p><a href="http://clang.llvm.org/">Clang</a> is an LLVM front end for the C, |
| 97 | C++, and Objective-C languages. Clang aims to provide a better user experience |
| 98 | through expressive diagnostics, a high level of conformance to language |
| 99 | standards, fast compilation, and low memory use. Like LLVM, Clang provides a |
| 100 | modular, library-based architecture that makes it suitable for creating or |
| 101 | integrating with other development tools. Clang is considered a |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 102 | production-quality compiler for C, Objective-C, C++ and Objective-C++ on x86 |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 103 | (32- and 64-bit), and for darwin/arm targets.</p> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 104 | |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 105 | <p>In the LLVM 3.0 time-frame, the Clang team has made many improvements:</p> |
Douglas Gregor | ba087df | 2011-10-15 00:48:01 +0000 | [diff] [blame] | 106 | |
| 107 | <ul> |
| 108 | <li>Greatly improved support for building C++ applications, with greater stability and better diagnostics.</li> |
| 109 | |
| 110 | <li><a href="http://clang.llvm.org/cxx_status.html">Improved support</a> for the <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=50372 ">C++ 2011</a> standard, including implementations of non-static data member initializers, alias templates, delegating constructors, the range-based for loop, and implicitly-generated move constructors and move assignment operators, among others.</li> |
| 111 | |
| 112 | <li>Implemented support for some features of the upcoming C1x standard, including static assertions and generic selections.</li> |
| 113 | |
| 114 | <li>Better detection of include and linking paths for system headers and libraries, especially for Linux distributions.</li> |
| 115 | |
| 116 | <li>Implemented support for <a href="http://clang.llvm.org/docs/AutomaticReferenceCounting.html">Automatic Reference Counting</a> for Objective-C.</li> |
| 117 | |
| 118 | <li>Implemented a number of optimizations in <tt>libclang</tt>, the Clang C interface, to improve the performance of code completion and the mapping from source locations to abstract syntax tree nodes.</li> |
| 119 | </ul> |
| 120 | |
Chris Lattner | 0a6f6d5 | 2011-04-05 07:19:28 +0000 | [diff] [blame] | 121 | |
Duncan Sands | f3ba7af | 2011-04-06 08:07:40 +0000 | [diff] [blame] | 122 | <p>If Clang rejects your code but another compiler accepts it, please take a |
Chris Lattner | 0a6f6d5 | 2011-04-05 07:19:28 +0000 | [diff] [blame] | 123 | look at the <a href="http://clang.llvm.org/compatibility.html">language |
Duncan Sands | f3ba7af | 2011-04-06 08:07:40 +0000 | [diff] [blame] | 124 | compatibility</a> guide to make sure this is not intentional or a known issue. |
Chris Lattner | 0a6f6d5 | 2011-04-05 07:19:28 +0000 | [diff] [blame] | 125 | </p> |
Bill Wendling | 741748a | 2008-10-27 09:27:33 +0000 | [diff] [blame] | 126 | |
Chris Lattner | fb97b2d | 2008-10-13 18:11:54 +0000 | [diff] [blame] | 127 | </div> |
| 128 | |
| 129 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 130 | <h3> |
Duncan Sands | 528a510 | 2011-04-04 11:09:08 +0000 | [diff] [blame] | 131 | <a name="dragonegg">DragonEgg: GCC front-ends, LLVM back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 132 | </h3> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 133 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 134 | <div> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 135 | <p> |
Duncan Sands | 528a510 | 2011-04-04 11:09:08 +0000 | [diff] [blame] | 136 | <a href="http://dragonegg.llvm.org/">DragonEgg</a> is a |
| 137 | <a href="http://gcc.gnu.org/wiki/plugins">gcc plugin</a> that replaces GCC's |
| 138 | optimizers and code generators with LLVM's. |
| 139 | Currently it requires a patched version of gcc-4.5. |
| 140 | The plugin can target the x86-32 and x86-64 processor families and has been |
| 141 | used successfully on the Darwin, FreeBSD and Linux platforms. |
| 142 | The Ada, C, C++ and Fortran languages work well. |
| 143 | The plugin is capable of compiling plenty of Obj-C, Obj-C++ and Java but it is |
| 144 | not known whether the compiled code actually works or not! |
Duncan Sands | 749fd83 | 2010-04-02 09:23:15 +0000 | [diff] [blame] | 145 | </p> |
| 146 | |
| 147 | <p> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 148 | The 3.0 release has the following notable changes: |
Duncan Sands | 4b1da2b | 2010-09-30 17:37:34 +0000 | [diff] [blame] | 149 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 150 | <!-- |
| 151 | <li></li> |
| 152 | --> |
Duncan Sands | 4b1da2b | 2010-09-30 17:37:34 +0000 | [diff] [blame] | 153 | </ul> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 154 | |
| 155 | </div> |
| 156 | |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 157 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 158 | <h3> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 159 | <a name="compiler-rt">compiler-rt: Compiler Runtime Library</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 160 | </h3> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 161 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 162 | <div> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 163 | <p> |
| 164 | The new LLVM <a href="http://compiler-rt.llvm.org/">compiler-rt project</a> |
| 165 | is a simple library that provides an implementation of the low-level |
| 166 | target-specific hooks required by code generation and other runtime components. |
| 167 | For example, when compiling for a 32-bit target, converting a double to a 64-bit |
| 168 | unsigned integer is compiled into a runtime call to the "__fixunsdfdi" |
| 169 | function. The compiler-rt library provides highly optimized implementations of |
| 170 | this and other low-level routines (some are 3x faster than the equivalent |
| 171 | libgcc routines).</p> |
| 172 | |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 173 | <p>In the LLVM 3.0 timeframe,</p> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 174 | |
| 175 | </div> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 176 | |
| 177 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 178 | <h3> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 179 | <a name="lldb">LLDB: Low Level Debugger</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 180 | </h3> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 181 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 182 | <div> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 183 | <p> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 184 | <a href="http://lldb.llvm.org/">LLDB</a> is a brand new member of the LLVM |
| 185 | umbrella of projects. LLDB is a next generation, high-performance debugger. It |
| 186 | is built as a set of reusable components which highly leverage existing |
| 187 | libraries in the larger LLVM Project, such as the Clang expression parser, the |
| 188 | LLVM disassembler and the LLVM JIT.</p> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 189 | |
| 190 | <p> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 191 | LLDB is has advanced by leaps and bounds in the 3.0 timeframe. It is |
Chris Lattner | df448a3 | 2011-04-06 00:56:12 +0000 | [diff] [blame] | 192 | dramatically more stable and useful, and includes both a new <a |
| 193 | href="http://lldb.llvm.org/tutorial.html">tutorial</a> and a <a |
| 194 | href="http://lldb.llvm.org/lldb-gdb.html">side-by-side comparison with |
| 195 | GDB</a>.</p> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 196 | |
| 197 | </div> |
| 198 | |
| 199 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 200 | <h3> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 201 | <a name="libc++">libc++: C++ Standard Library</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 202 | </h3> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 203 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 204 | <div> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 205 | <p> |
Tobias Grosser | cdce44b | 2010-10-06 21:07:30 +0000 | [diff] [blame] | 206 | <a href="http://libcxx.llvm.org/">libc++</a> is another new member of the LLVM |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 207 | family. It is an implementation of the C++ standard library, written from the |
| 208 | ground up to specifically target the forthcoming C++'0X standard and focus on |
| 209 | delivering great performance.</p> |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 210 | |
| 211 | <p> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 212 | In the LLVM 3.0 timeframe,</p> |
Chris Lattner | 0a6f6d5 | 2011-04-05 07:19:28 +0000 | [diff] [blame] | 213 | |
Chris Lattner | 2009c49 | 2011-04-06 00:59:18 +0000 | [diff] [blame] | 214 | <p> |
| 215 | Like compiler_rt, libc++ is now <a href="DeveloperPolicy.html#license">dual |
| 216 | licensed</a> under the MIT and UIUC license, allowing it to be used more |
| 217 | permissively. |
Chris Lattner | e07043c | 2010-09-29 05:30:03 +0000 | [diff] [blame] | 218 | </p> |
| 219 | |
| 220 | </div> |
| 221 | |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 222 | |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 223 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 224 | <h3> |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 225 | <a name="LLBrowse">LLBrowse: IR Browser</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 226 | </h3> |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 227 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 228 | <div> |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 229 | <p> |
| 230 | <a href="http://llvm.org/svn/llvm-project/llbrowse/trunk/doc/LLBrowse.html"> |
| 231 | LLBrowse</a> is an interactive viewer for LLVM modules. It can load any LLVM |
| 232 | module and displays its contents as an expandable tree view, facilitating an |
| 233 | easy way to inspect types, functions, global variables, or metadata nodes. It |
| 234 | is fully cross-platform, being based on the popular wxWidgets GUI toolkit. |
| 235 | </p> |
| 236 | </div> |
| 237 | |
| 238 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 239 | <h3> |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 240 | <a name="vmkit">VMKit</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 241 | </h3> |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 242 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 243 | <div> |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 244 | <p>The <a href="http://vmkit.llvm.org/">VMKit project</a> is an implementation |
| 245 | of a Java Virtual Machine (Java VM or JVM) that uses LLVM for static and |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 246 | just-in-time compilation. As of LLVM 3.0, VMKit now supports generational |
Chris Lattner | 3d6a80a | 2011-04-07 03:08:22 +0000 | [diff] [blame] | 247 | garbage collectors. The garbage collectors are provided by the MMTk framework, |
| 248 | and VMKit can be configured to use one of the numerous implemented collectors |
| 249 | of MMTk. |
| 250 | </p> |
| 251 | </div> |
| 252 | |
| 253 | |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 254 | <!--=========================================================================--> |
Chris Lattner | 7a8e6c5 | 2011-04-05 18:38:45 +0000 | [diff] [blame] | 255 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 256 | <h3> |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 257 | <a name="klee">KLEE: A Symbolic Execution Virtual Machine</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 258 | </h3> |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 259 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 260 | <div> |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 261 | <p> |
| 262 | <a href="http://klee.llvm.org/">KLEE</a> is a symbolic execution framework for |
| 263 | programs in LLVM bitcode form. KLEE tries to symbolically evaluate "all" paths |
| 264 | through the application and records state transitions that lead to fault |
| 265 | states. This allows it to construct testcases that lead to faults and can even |
| 266 | be used to verify some algorithms. |
| 267 | </p> |
| 268 | |
Chris Lattner | be2e1b5 | 2011-03-10 07:43:44 +0000 | [diff] [blame] | 269 | <p>UPDATE!</p> |
Chris Lattner | 7a8e6c5 | 2011-04-05 18:38:45 +0000 | [diff] [blame] | 270 | </div>--> |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 271 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 272 | </div> |
Daniel Dunbar | 97b01a8 | 2010-10-04 17:39:47 +0000 | [diff] [blame] | 273 | |
Chris Lattner | ab68e9e | 2009-02-26 22:33:38 +0000 | [diff] [blame] | 274 | <!-- *********************************************************************** --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 275 | <h2> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 276 | <a name="externalproj">External Open Source Projects Using LLVM 3.0</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 277 | </h2> |
Chris Lattner | ab68e9e | 2009-02-26 22:33:38 +0000 | [diff] [blame] | 278 | <!-- *********************************************************************** --> |
| 279 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 280 | <div> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 281 | |
| 282 | <p>An exciting aspect of LLVM is that it is used as an enabling technology for |
| 283 | a lot of other language and tools projects. This section lists some of the |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 284 | projects that have already been updated to work with LLVM 3.0.</p> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 285 | |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 286 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 287 | |
| 288 | <!-- FIXME: Comment out |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 289 | <h3>Crack Programming Language</h3> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 290 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 291 | <div> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 292 | <p> |
| 293 | <a href="http://code.google.com/p/crack-language/">Crack</a> aims to provide the |
| 294 | ease of development of a scripting language with the performance of a compiled |
| 295 | language. The language derives concepts from C++, Java and Python, incorporating |
| 296 | object-oriented programming, operator overloading and strong typing.</p> |
| 297 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 298 | --> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 299 | |
| 300 | <!--=========================================================================--> |
Bill Wendling | f62333d | 2011-10-25 20:35:31 +0000 | [diff] [blame] | 301 | <h3>gwXscript</h3> |
| 302 | |
| 303 | <div> |
| 304 | |
| 305 | <p><a href="http://botwars.tk/gwscript/">gwXscript</a> is an object oriented, |
| 306 | aspect orientied programing language which can create both, executables (ELF, |
| 307 | EXE) and shared libraries (DLL, SO, DYNLIB). The compiler is implemented in |
| 308 | its own language and translates scripts into LLVM-IR which can be optimized |
| 309 | and translated into native code by the LLVM framework. Source code in |
| 310 | gwScript contains definitions that expand the namespaces. So you can build |
| 311 | your project and simply 'plug out' features by removing a file. The remaining |
| 312 | project does not leave scars since you directly separate concerns by the |
| 313 | 'template' feature of gwX. It is also possible to add new features to a |
| 314 | project by just adding files and without editing the original project. This |
| 315 | language is used for example to create games or content management systems |
| 316 | that should be extendable.</p> |
| 317 | |
| 318 | <p>gwXscript is strongly typed and offers comfort with its native types string, |
| 319 | hash and array. You can easily write new libraries in gwXscript or native |
| 320 | code. gwXscript is type safe and users should not be able to crash your |
| 321 | program or execute malicious code except code that is eating CPU time.</p> |
| 322 | |
| 323 | </div> |
| 324 | |
| 325 | <!--=========================================================================--> |
Bill Wendling | ba22627 | 2011-10-25 20:37:45 +0000 | [diff] [blame] | 326 | <h3>Portable OpenCL (pocl)</h3> |
| 327 | |
| 328 | <div> |
| 329 | |
| 330 | <p>Portable OpenCL is an open source implementation of the OpenCL standard which |
| 331 | can be easily adapted for new targets. One of the goals of the project is |
| 332 | improving performance portability of OpenCL programs, avoiding the need for |
| 333 | target-dependent manual optimizations. A "native" target is included, which |
| 334 | allows running OpenCL kernels on the host (CPU).</p> |
| 335 | |
| 336 | </div> |
| 337 | |
| 338 | <!--=========================================================================--> |
Bill Wendling | 0bad98c | 2011-10-25 20:39:06 +0000 | [diff] [blame^] | 339 | <h3>Pure</h3> |
| 340 | |
| 341 | <div> |
| 342 | <p><a href="http://pure-lang.googlecode.com/">Pure</a> is an |
| 343 | algebraic/functional programming language based on term rewriting. Programs |
| 344 | are collections of equations which are used to evaluate expressions in a |
| 345 | symbolic fashion. The interpreter uses LLVM as a backend to JIT-compile Pure |
| 346 | programs to fast native code. Pure offers dynamic typing, eager and lazy |
| 347 | evaluation, lexical closures, a hygienic macro system (also based on term |
| 348 | rewriting), built-in list and matrix support (including list and matrix |
| 349 | comprehensions) and an easy-to-use interface to C and other programming |
| 350 | languages (including the ability to load LLVM bitcode modules, and inline C, |
| 351 | C++, Fortran and Faust code in Pure programs if the corresponding LLVM-enabled |
| 352 | compilers are installed).</p> |
| 353 | |
| 354 | <p>Pure version 0.48 has been tested and is known to work with LLVM 3.0 |
| 355 | (and continues to work with older LLVM releases >= 2.5).</p> |
| 356 | |
| 357 | </div> |
| 358 | |
| 359 | <!--=========================================================================--> |
Bill Wendling | 2d7b4af | 2011-10-25 20:24:32 +0000 | [diff] [blame] | 360 | <h3>TTA-based Co-design Environment (TCE)</h3> |
| 361 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 362 | <div> |
Bill Wendling | 2d7b4af | 2011-10-25 20:24:32 +0000 | [diff] [blame] | 363 | |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 364 | <p>TCE is a toolset for designing application-specific processors (ASP) based on |
Bill Wendling | 2d7b4af | 2011-10-25 20:24:32 +0000 | [diff] [blame] | 365 | the Transport triggered architecture (TTA). The toolset provides a complete |
| 366 | co-design flow from C/C++ programs down to synthesizable VHDL and parallel |
| 367 | program binaries. Processor customization points include the register files, |
| 368 | function units, supported operations, and the interconnection network.</p> |
| 369 | |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 370 | <p>TCE uses Clang and LLVM for C/C++ language support, target independent |
Bill Wendling | 2d7b4af | 2011-10-25 20:24:32 +0000 | [diff] [blame] | 371 | optimizations and also for parts of code generation. It generates new |
| 372 | LLVM-based code generators <i>on the fly</i> for the designed TTA processors |
| 373 | and loads them in to the compiler backend as runtime libraries to avoid |
| 374 | per-target recompilation of larger parts of the compiler chain.</p> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 375 | </div> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 376 | |
| 377 | |
| 378 | <!--=========================================================================--> |
Bill Wendling | 628c266 | 2011-10-25 20:27:37 +0000 | [diff] [blame] | 379 | <h3>Tart Programming Language</h3> |
| 380 | |
| 381 | <div> |
| 382 | |
| 383 | <p><a href="http://code.google.com/p/tart/">Tart</a> is a general-purpose, |
| 384 | strongly typed programming language designed for application |
| 385 | developers. Strongly inspired by Python and C#, Tart focuses on practical |
| 386 | solutions for the professional software developer, while avoiding the clutter |
| 387 | and boilerplate of legacy languages like Java and C++. Although Tart is still |
| 388 | in development, the current implementation supports many features expected of |
| 389 | a modern programming language, such as garbage collection, powerful |
| 390 | bidirectional type inference, a greatly simplified syntax for template |
| 391 | metaprogramming, closures and function literals, reflection, operator |
| 392 | overloading, explicit mutability and immutability, and much more. Tart is |
| 393 | flexible enough to accommodate a broad range of programming styles and |
| 394 | philosophies, while maintaining a strong commitment to simplicity, minimalism |
| 395 | and elegance in design.</p> |
| 396 | |
| 397 | </div> |
| 398 | |
| 399 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 400 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 401 | <h3>PinaVM</h3> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 402 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 403 | <div> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 404 | <p><a href="http://gitorious.org/pinavm/pages/Home">PinaVM</a> is an open |
| 405 | source, <a href="http://www.systemc.org/">SystemC</a> front-end. Unlike many |
| 406 | other front-ends, PinaVM actually executes the elaboration of the |
| 407 | program analyzed using LLVM's JIT infrastructure. It later enriches the |
| 408 | bitcode with SystemC-specific information.</p> |
| 409 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 410 | --> |
| 411 | |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 412 | |
| 413 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 414 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 415 | <h3 id="icedtea">IcedTea Java Virtual Machine Implementation</h3> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 416 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 417 | <div> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 418 | <p> |
| 419 | <a href="http://icedtea.classpath.org/wiki/Main_Page">IcedTea</a> provides a |
| 420 | harness to build OpenJDK using only free software build tools and to provide |
| 421 | replacements for the not-yet free parts of OpenJDK. One of the extensions that |
| 422 | IcedTea provides is a new JIT compiler named <a |
| 423 | href="http://icedtea.classpath.org/wiki/ZeroSharkFaq">Shark</a> which uses LLVM |
| 424 | to provide native code generation without introducing processor-dependent |
| 425 | code. |
| 426 | </p> |
| 427 | |
| 428 | <p> OpenJDK 7 b112, IcedTea6 1.9 and IcedTea7 1.13 and later have been tested |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 429 | and are known to work with LLVM 3.0 (and continue to work with older LLVM |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 430 | releases >= 2.6 as well).</p> |
| 431 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 432 | --> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 433 | |
| 434 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 435 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 436 | <h3>Glasgow Haskell Compiler (GHC)</h3> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 437 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 438 | <div> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 439 | <p>GHC is an open source, state-of-the-art programming suite for Haskell, |
| 440 | a standard lazy functional programming language. It includes an |
| 441 | optimizing static compiler generating good code for a variety of |
| 442 | platforms, together with an interactive system for convenient, quick |
| 443 | development.</p> |
| 444 | |
| 445 | <p>In addition to the existing C and native code generators, GHC 7.0 now |
| 446 | supports an LLVM code generator. GHC supports LLVM 2.7 and later.</p> |
| 447 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 448 | --> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 449 | |
| 450 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 451 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 452 | <h3>Polly - Polyhedral optimizations for LLVM</h3> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 453 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 454 | <div> |
Chris Lattner | 3bfe57e | 2011-04-06 01:13:49 +0000 | [diff] [blame] | 455 | <p>Polly is a project that aims to provide advanced memory access optimizations |
| 456 | to better take advantage of SIMD units, cache hierarchies, multiple cores or |
| 457 | even vector accelerators for LLVM. Built around an abstract mathematical |
| 458 | description based on Z-polyhedra, it provides the infrastructure to develop |
| 459 | advanced optimizations in LLVM and to connect complex external optimizers. In |
| 460 | its first year of existence Polly already provides an exact value-based |
| 461 | dependency analysis as well as basic SIMD and OpenMP code generation support. |
| 462 | Furthermore, Polly can use PoCC(Pluto) an advanced optimizer for data-locality |
| 463 | and parallelism.</p> |
| 464 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 465 | --> |
Chris Lattner | 7554771 | 2010-10-03 23:49:06 +0000 | [diff] [blame] | 466 | |
Chris Lattner | 0fa5da9 | 2011-04-06 16:14:25 +0000 | [diff] [blame] | 467 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 468 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 469 | <h3>Rubinius</h3> |
Chris Lattner | 0fa5da9 | 2011-04-06 16:14:25 +0000 | [diff] [blame] | 470 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 471 | <div> |
Chris Lattner | 0fa5da9 | 2011-04-06 16:14:25 +0000 | [diff] [blame] | 472 | <p><a href="http://github.com/evanphx/rubinius">Rubinius</a> is an environment |
| 473 | for running Ruby code which strives to write as much of the implementation in |
| 474 | Ruby as possible. Combined with a bytecode interpreting VM, it uses LLVM to |
| 475 | optimize and compile ruby code down to machine code. Techniques such as type |
| 476 | feedback, method inlining, and deoptimization are all used to remove dynamism |
| 477 | from ruby execution and increase performance.</p> |
| 478 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 479 | --> |
Chris Lattner | 0fa5da9 | 2011-04-06 16:14:25 +0000 | [diff] [blame] | 480 | |
Chris Lattner | a844a3e | 2011-04-07 03:09:21 +0000 | [diff] [blame] | 481 | <!--=========================================================================--> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 482 | <!-- |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 483 | <h3> |
Chris Lattner | a844a3e | 2011-04-07 03:09:21 +0000 | [diff] [blame] | 484 | <a name="FAUST">FAUST Real-Time Audio Signal Processing Language</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 485 | </h3> |
Chris Lattner | e051844 | 2010-10-01 06:34:49 +0000 | [diff] [blame] | 486 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 487 | <div> |
Chris Lattner | a844a3e | 2011-04-07 03:09:21 +0000 | [diff] [blame] | 488 | <p> |
| 489 | <a href="http://faust.grame.fr">FAUST</a> is a compiled language for real-time |
| 490 | audio signal processing. The name FAUST stands for Functional AUdio STream. Its |
| 491 | programming model combines two approaches: functional programming and block |
| 492 | diagram composition. In addition with the C, C++, JAVA output formats, the |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 493 | Faust compiler can now generate LLVM bitcode, and works with LLVM 2.7-3.0.</p> |
Chris Lattner | a844a3e | 2011-04-07 03:09:21 +0000 | [diff] [blame] | 494 | |
| 495 | </div> |
Bill Wendling | f2a7833 | 2011-10-25 01:01:42 +0000 | [diff] [blame] | 496 | --> |
Chris Lattner | a844a3e | 2011-04-07 03:09:21 +0000 | [diff] [blame] | 497 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 498 | </div> |
| 499 | |
Chris Lattner | 8348b47 | 2008-06-08 21:58:17 +0000 | [diff] [blame] | 500 | <!-- *********************************************************************** --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 501 | <h2> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 502 | <a name="whatsnew">What's New in LLVM 3.0?</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 503 | </h2> |
Chris Lattner | 8348b47 | 2008-06-08 21:58:17 +0000 | [diff] [blame] | 504 | <!-- *********************************************************************** --> |
| 505 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 506 | <div> |
Chris Lattner | f8e0b4e | 2008-06-08 22:59:35 +0000 | [diff] [blame] | 507 | |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 508 | <p>This release includes a huge number of bug fixes, performance tweaks and |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 509 | minor improvements. Some of the major improvements and new features are listed |
| 510 | in this section. |
Chris Lattner | f8e0b4e | 2008-06-08 22:59:35 +0000 | [diff] [blame] | 511 | </p> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 512 | |
Chris Lattner | 914ce46 | 2010-04-22 06:28:20 +0000 | [diff] [blame] | 513 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 514 | <h3> |
Chris Lattner | 252b83d | 2008-02-06 18:00:06 +0000 | [diff] [blame] | 515 | <a name="majorfeatures">Major New Features</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 516 | </h3> |
Chris Lattner | 252b83d | 2008-02-06 18:00:06 +0000 | [diff] [blame] | 517 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 518 | <div> |
Chris Lattner | 252b83d | 2008-02-06 18:00:06 +0000 | [diff] [blame] | 519 | |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 520 | <p>LLVM 3.0 includes several major new capabilities:</p> |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 521 | |
| 522 | <ul> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 523 | |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 524 | <!-- |
| 525 | <li></li> |
| 526 | --> |
Chris Lattner | 7a8e6c5 | 2011-04-05 18:38:45 +0000 | [diff] [blame] | 527 | |
Chris Lattner | 8170c10 | 2008-02-10 08:18:42 +0000 | [diff] [blame] | 528 | </ul> |
Chris Lattner | 0a6f6d5 | 2011-04-05 07:19:28 +0000 | [diff] [blame] | 529 | |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 530 | </div> |
| 531 | |
Chris Lattner | 8497764 | 2007-09-21 03:54:09 +0000 | [diff] [blame] | 532 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 533 | <h3> |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 534 | <a name="coreimprovements">LLVM IR and Core Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 535 | </h3> |
Chris Lattner | f304ffc | 2008-02-10 08:17:19 +0000 | [diff] [blame] | 536 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 537 | <div> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 538 | <p>LLVM IR has several new features for better support of new targets and that |
| 539 | expose new optimization opportunities:</p> |
Chris Lattner | f304ffc | 2008-02-10 08:17:19 +0000 | [diff] [blame] | 540 | |
Chris Lattner | 791f77b | 2008-06-05 06:25:56 +0000 | [diff] [blame] | 541 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 542 | <!-- |
| 543 | <li></li> |
| 544 | --> |
Chris Lattner | f304ffc | 2008-02-10 08:17:19 +0000 | [diff] [blame] | 545 | </ul> |
Mikhail Glushenkov | ea65d7d | 2008-10-13 02:08:34 +0000 | [diff] [blame] | 546 | |
Chris Lattner | f304ffc | 2008-02-10 08:17:19 +0000 | [diff] [blame] | 547 | </div> |
| 548 | |
| 549 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 550 | <h3> |
Chris Lattner | acce85d | 2008-02-10 07:46:44 +0000 | [diff] [blame] | 551 | <a name="optimizer">Optimizer Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 552 | </h3> |
Chris Lattner | acce85d | 2008-02-10 07:46:44 +0000 | [diff] [blame] | 553 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 554 | <div> |
Chris Lattner | acce85d | 2008-02-10 07:46:44 +0000 | [diff] [blame] | 555 | |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 556 | <p>In addition to a large array of minor performance tweaks and bug fixes, this |
Chris Lattner | f301387 | 2008-10-13 21:50:36 +0000 | [diff] [blame] | 557 | release includes a few major enhancements and additions to the optimizers:</p> |
Chris Lattner | acce85d | 2008-02-10 07:46:44 +0000 | [diff] [blame] | 558 | |
| 559 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 560 | <!-- |
| 561 | <li></li> |
| 562 | --> |
Chris Lattner | c5ac61d | 2011-04-06 05:50:04 +0000 | [diff] [blame] | 563 | </li> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 564 | |
Chris Lattner | 11b6611 | 2010-10-04 02:42:39 +0000 | [diff] [blame] | 565 | </ul> |
| 566 | |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 567 | </div> |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 568 | |
Chris Lattner | 0b83220 | 2008-06-08 02:45:07 +0000 | [diff] [blame] | 569 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 570 | <h3> |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 571 | <a name="mc">MC Level Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 572 | </h3> |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 573 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 574 | <div> |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 575 | <p> |
Chris Lattner | 7d9b6b4 | 2010-10-02 21:59:30 +0000 | [diff] [blame] | 576 | The LLVM Machine Code (aka MC) subsystem was created to solve a number |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 577 | of problems in the realm of assembly, disassembly, object file format handling, |
| 578 | and a number of other related areas that CPU instruction-set level tools work |
Chris Lattner | 7d9b6b4 | 2010-10-02 21:59:30 +0000 | [diff] [blame] | 579 | in.</p> |
| 580 | |
Chris Lattner | 7d9b6b4 | 2010-10-02 21:59:30 +0000 | [diff] [blame] | 581 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 582 | <!-- |
| 583 | <li></li> |
| 584 | --> |
Chris Lattner | 7d9b6b4 | 2010-10-02 21:59:30 +0000 | [diff] [blame] | 585 | </ul> |
| 586 | |
| 587 | <p>For more information, please see the <a |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 588 | href="http://blog.llvm.org/2010/04/intro-to-llvm-mc-project.html">Intro to the |
| 589 | LLVM MC Project Blog Post</a>. |
| 590 | </p> |
| 591 | |
NAKAMURA Takumi | 45c435a | 2011-04-05 08:24:22 +0000 | [diff] [blame] | 592 | </div> |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 593 | |
Chris Lattner | 4ba2b65 | 2010-09-30 16:31:33 +0000 | [diff] [blame] | 594 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 595 | <h3> |
Chris Lattner | 511433e | 2009-03-02 03:24:11 +0000 | [diff] [blame] | 596 | <a name="codegen">Target Independent Code Generator Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 597 | </h3> |
Chris Lattner | 0b83220 | 2008-06-08 02:45:07 +0000 | [diff] [blame] | 598 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 599 | <div> |
Chris Lattner | 0b83220 | 2008-06-08 02:45:07 +0000 | [diff] [blame] | 600 | |
Mikhail Glushenkov | f795ef0 | 2009-03-01 18:09:47 +0000 | [diff] [blame] | 601 | <p>We have put a significant amount of work into the code generator |
| 602 | infrastructure, which allows us to implement more aggressive algorithms and make |
| 603 | it run faster:</p> |
Chris Lattner | 0b83220 | 2008-06-08 02:45:07 +0000 | [diff] [blame] | 604 | |
| 605 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 606 | <!-- |
| 607 | <li></li> |
| 608 | --> |
Chris Lattner | 8497764 | 2007-09-21 03:54:09 +0000 | [diff] [blame] | 609 | </ul> |
Chris Lattner | 8497764 | 2007-09-21 03:54:09 +0000 | [diff] [blame] | 610 | </div> |
| 611 | |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 612 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 613 | <h3> |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 614 | <a name="x86">X86-32 and X86-64 Target Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 615 | </h3> |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 616 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 617 | <div> |
Chris Lattner | 7714c91 | 2010-10-04 04:39:25 +0000 | [diff] [blame] | 618 | <p>New features and major changes in the X86 target include: |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 619 | </p> |
| 620 | |
| 621 | <ul> |
Chad Rosier | f94c9c1 | 2011-05-27 20:13:10 +0000 | [diff] [blame] | 622 | <li>The CRC32 intrinsics have been renamed. The intrinsics were previously |
| 623 | @llvm.x86.sse42.crc32.[8|16|32] and @llvm.x86.sse42.crc64.[8|64]. They have |
| 624 | been renamed to @llvm.x86.sse42.crc32.32.[8|16|32] and |
| 625 | @llvm.x86.sse42.crc32.64.[8|64].</li> |
| 626 | |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 627 | </ul> |
| 628 | |
Chris Lattner | 917cc71 | 2009-03-02 02:37:32 +0000 | [diff] [blame] | 629 | </div> |
Chris Lattner | 8497764 | 2007-09-21 03:54:09 +0000 | [diff] [blame] | 630 | |
| 631 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 632 | <h3> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 633 | <a name="ARM">ARM Target Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 634 | </h3> |
Chris Lattner | c441fb8 | 2009-03-01 02:30:21 +0000 | [diff] [blame] | 635 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 636 | <div> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 637 | <p>New features of the ARM target include: |
| 638 | </p> |
Chris Lattner | c441fb8 | 2009-03-01 02:30:21 +0000 | [diff] [blame] | 639 | |
| 640 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 641 | <!-- |
| 642 | <li></li> |
| 643 | --> |
Bob Wilson | e847277 | 2010-09-13 17:39:35 +0000 | [diff] [blame] | 644 | </ul> |
Chris Lattner | 61358ab | 2009-10-13 17:48:04 +0000 | [diff] [blame] | 645 | </div> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 646 | |
| 647 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 648 | <h3> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 649 | <a name="OtherTS">Other Target Specific Improvements</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 650 | </h3> |
Chris Lattner | c441fb8 | 2009-03-01 02:30:21 +0000 | [diff] [blame] | 651 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 652 | <div> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 653 | <ul> |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 654 | <!-- |
| 655 | <li></li> |
| 656 | --> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 657 | </ul> |
| 658 | </div> |
Chris Lattner | 77d29b1 | 2008-06-05 08:02:49 +0000 | [diff] [blame] | 659 | |
| 660 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 661 | <h3> |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 662 | <a name="changes">Major Changes and Removed Features</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 663 | </h3> |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 664 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 665 | <div> |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 666 | |
Bill Wendling | 2626dba | 2011-08-03 22:18:20 +0000 | [diff] [blame] | 667 | <p>If you're already an LLVM user or developer with out-of-tree changes based on |
| 668 | LLVM 2.9, this section lists some "gotchas" that you may run into upgrading |
| 669 | from the previous release.</p> |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 670 | |
| 671 | <ul> |
Eric Christopher | 90d6ec5 | 2011-09-28 19:47:28 +0000 | [diff] [blame] | 672 | <li>The <code>LLVMC</code> front end code was removed while separating |
| 673 | out language independence.</li> |
Jay Foad | f42e9b2 | 2011-08-04 10:43:43 +0000 | [diff] [blame] | 674 | <li>The <code>LowerSetJmp</code> pass wasn't used effectively by any |
| 675 | target and has been removed.</li> |
Rafael Espindola | f940a1a | 2011-08-30 23:03:45 +0000 | [diff] [blame] | 676 | <li>The old <code>TailDup</code> pass was not used in the standard pipeline |
| 677 | and was unable to update ssa form, so it has been removed. |
Eli Friedman | f03bb26 | 2011-08-12 22:50:01 +0000 | [diff] [blame] | 678 | <li>The syntax of volatile loads and stores in IR has been changed to |
| 679 | "<code>load volatile</code>"/"<code>store volatile</code>". The old |
| 680 | syntax ("<code>volatile load</code>"/"<code>volatile store</code>") |
| 681 | is still accepted, but is now considered deprecated.</li> |
Devang Patel | b34dd13 | 2008-10-14 20:03:43 +0000 | [diff] [blame] | 682 | </ul> |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 683 | |
NAKAMURA Takumi | 2026de2 | 2011-08-22 23:22:05 +0000 | [diff] [blame] | 684 | <h4>Windows (32-bit)</h4> |
| 685 | <div> |
| 686 | <ul> |
| 687 | <li>On Win32(MinGW32 and MSVC), Windows 2000 will not be supported. |
| 688 | Windows XP or higher is required.</li> |
| 689 | </ul> |
| 690 | </div> |
| 691 | |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 692 | </div> |
| 693 | |
Daniel Dunbar | f0233c6 | 2010-10-04 20:11:41 +0000 | [diff] [blame] | 694 | <!--=========================================================================--> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 695 | <h3> |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 696 | <a name="api_changes">Internal API Changes</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 697 | </h3> |
Daniel Dunbar | f0233c6 | 2010-10-04 20:11:41 +0000 | [diff] [blame] | 698 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 699 | <div> |
Daniel Dunbar | f0233c6 | 2010-10-04 20:11:41 +0000 | [diff] [blame] | 700 | |
Chris Lattner | 1efe27e | 2011-04-06 00:45:11 +0000 | [diff] [blame] | 701 | <p>In addition, many APIs have changed in this release. Some of the major |
Bill Wendling | 1600525 | 2011-08-02 06:20:17 +0000 | [diff] [blame] | 702 | LLVM API changes are:</p> |
Daniel Dunbar | f0233c6 | 2010-10-04 20:11:41 +0000 | [diff] [blame] | 703 | |
| 704 | <ul> |
Chris Lattner | d132430 | 2011-07-18 04:56:02 +0000 | [diff] [blame] | 705 | <li>The biggest and most pervasive change is that llvm::Type's are no longer |
| 706 | returned or accepted as 'const' values. Instead, just pass around non-const |
| 707 | Type's.</li> |
| 708 | |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 709 | <li><code>PHINode::reserveOperandSpace</code> has been removed. Instead, you |
| 710 | must specify how many operands to reserve space for when you create the |
| 711 | PHINode, by passing an extra argument into <code>PHINode::Create</code>.</li> |
| 712 | |
| 713 | <li>PHINodes no longer store their incoming BasicBlocks as operands. Instead, |
| 714 | the list of incoming BasicBlocks is stored separately, and can be accessed |
| 715 | with new functions <code>PHINode::block_begin</code> |
| 716 | and <code>PHINode::block_end</code>.</li> |
| 717 | |
| 718 | <li>Various functions now take an <code>ArrayRef</code> instead of either a pair |
| 719 | of pointers (or iterators) to the beginning and end of a range, or a pointer |
| 720 | and a length. Others now return an <code>ArrayRef</code> instead of a |
| 721 | reference to a <code>SmallVector</code> or <code>std::vector</code>. These |
| 722 | include: |
| 723 | <ul> |
| 724 | <!-- Please keep this list sorted. --> |
Jay Foad | a3efbb1 | 2011-07-15 08:37:34 +0000 | [diff] [blame] | 725 | <li><code>CallInst::Create</code></li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 726 | <li><code>ComputeLinearIndex</code> (in <code>llvm/CodeGen/Analysis.h</code>)</li> |
| 727 | <li><code>ConstantArray::get</code></li> |
| 728 | <li><code>ConstantExpr::getExtractElement</code></li> |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 729 | <li><code>ConstantExpr::getGetElementPtr</code></li> |
| 730 | <li><code>ConstantExpr::getInBoundsGetElementPtr</code></li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 731 | <li><code>ConstantExpr::getIndices</code></li> |
| 732 | <li><code>ConstantExpr::getInsertElement</code></li> |
| 733 | <li><code>ConstantExpr::getWithOperands</code></li> |
Jay Foad | 1d2f569 | 2011-07-19 13:32:40 +0000 | [diff] [blame] | 734 | <li><code>ConstantFoldCall</code> (in <code>llvm/Analysis/ConstantFolding.h</code>)</li> |
| 735 | <li><code>ConstantFoldInstOperands</code> (in <code>llvm/Analysis/ConstantFolding.h</code>)</li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 736 | <li><code>ConstantVector::get</code></li> |
| 737 | <li><code>DIBuilder::createComplexVariable</code></li> |
| 738 | <li><code>DIBuilder::getOrCreateArray</code></li> |
| 739 | <li><code>ExtractValueInst::Create</code></li> |
| 740 | <li><code>ExtractValueInst::getIndexedType</code></li> |
| 741 | <li><code>ExtractValueInst::getIndices</code></li> |
| 742 | <li><code>FindInsertedValue</code> (in <code>llvm/Analysis/ValueTracking.h</code>)</li> |
Jay Foad | ca12a21 | 2011-07-19 14:42:50 +0000 | [diff] [blame] | 743 | <li><code>gep_type_begin</code> (in <code>llvm/Support/GetElementPtrTypeIterator.h</code>)</li> |
| 744 | <li><code>gep_type_end</code> (in <code>llvm/Support/GetElementPtrTypeIterator.h</code>)</li> |
Jay Foad | a920310 | 2011-07-25 09:48:08 +0000 | [diff] [blame] | 745 | <li><code>GetElementPtrInst::Create</code></li> |
| 746 | <li><code>GetElementPtrInst::CreateInBounds</code></li> |
| 747 | <li><code>GetElementPtrInst::getIndexedType</code></li> |
Jay Foad | b60e851 | 2011-07-21 14:42:51 +0000 | [diff] [blame] | 748 | <li><code>InsertValueInst::Create</code></li> |
| 749 | <li><code>InsertValueInst::getIndices</code></li> |
| 750 | <li><code>InvokeInst::Create</code></li> |
Jay Foad | a3efbb1 | 2011-07-15 08:37:34 +0000 | [diff] [blame] | 751 | <li><code>IRBuilder::CreateCall</code></li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 752 | <li><code>IRBuilder::CreateExtractValue</code></li> |
Jay Foad | 0a2a60a | 2011-07-22 08:16:57 +0000 | [diff] [blame] | 753 | <li><code>IRBuilder::CreateGEP</code></li> |
| 754 | <li><code>IRBuilder::CreateInBoundsGEP</code></li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 755 | <li><code>IRBuilder::CreateInsertValue</code></li> |
Jay Foad | a3efbb1 | 2011-07-15 08:37:34 +0000 | [diff] [blame] | 756 | <li><code>IRBuilder::CreateInvoke</code></li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 757 | <li><code>MDNode::get</code></li> |
| 758 | <li><code>MDNode::getIfExists</code></li> |
| 759 | <li><code>MDNode::getTemporary</code></li> |
| 760 | <li><code>MDNode::getWhenValsUnresolved</code></li> |
Jay Foad | b9b54eb | 2011-07-19 15:07:52 +0000 | [diff] [blame] | 761 | <li><code>SimplifyGEPInst</code> (in <code>llvm/Analysis/InstructionSimplify.h</code>)</li> |
Jay Foad | 8fbbb39 | 2011-07-19 14:01:37 +0000 | [diff] [blame] | 762 | <li><code>TargetData::getIndexedOffset</code></li> |
Jay Foad | 558d376 | 2011-07-14 09:19:05 +0000 | [diff] [blame] | 763 | </ul></li> |
| 764 | |
| 765 | <li>All forms of <code>StringMap::getOrCreateValue</code> have been remove |
| 766 | except for the one which takes a <code>StringRef</code>.</li> |
| 767 | |
Bill Wendling | 1600525 | 2011-08-02 06:20:17 +0000 | [diff] [blame] | 768 | <li>The <code>LLVMBuildUnwind</code> function from the C API was removed. The |
| 769 | LLVM <code>unwind</code> instruction has been deprecated for a long time and |
Bill Wendling | 086da7e | 2011-08-02 06:39:13 +0000 | [diff] [blame] | 770 | isn't used by the current front-ends. So this was removed during the |
Bill Wendling | 1600525 | 2011-08-02 06:20:17 +0000 | [diff] [blame] | 771 | exception handling rewrite.</li> |
| 772 | |
Bill Wendling | 2626dba | 2011-08-03 22:18:20 +0000 | [diff] [blame] | 773 | <li>The <code>LLVMAddLowerSetJmpPass</code> function from the C API was removed |
| 774 | because the <code>LowerSetJmp</code> pass was removed.</li> |
| 775 | |
Devang Patel | 6326a42 | 2011-08-15 23:00:00 +0000 | [diff] [blame] | 776 | <li>The <code>DIBuilder</code> interface used by front ends to encode debugging |
| 777 | information in the LLVM IR now expects clients to use <code>DIBuilder::finalize()</code> |
| 778 | at the end of translation unit to complete debugging information encoding.</li> |
| 779 | |
Torok Edwin | f16e2d4 | 2011-09-30 13:07:52 +0000 | [diff] [blame] | 780 | <li>The way the type system works has been rewritten: <code>PATypeHolder</code> |
| 781 | and <code>OpaqueType</code> are gone, and all APIs deal with <code>Type*</code> |
| 782 | instead of <code>const Type*</code>. |
| 783 | If you need to create recursive structures, then create a named structure, |
| 784 | and use <code>setBody()</code> when all its elements are built. |
| 785 | Type merging and refining is gone too: named structures are not |
| 786 | merged with other structures, even if their layout is identical. |
| 787 | (of course anonymous structures are still uniqued by layout). |
| 788 | </li> |
| 789 | |
| 790 | <li>TargetSelect.h moved to Support/ from Target/</li> |
| 791 | |
| 792 | <li>UpgradeIntrinsicCall no longer upgrades pre-2.9 intrinsic calls |
| 793 | (for example <code>llvm.memset.i32</code>).</li> |
| 794 | |
| 795 | <li>It is mandatory to initialize all out-of-tree passes too and their dependencies now with |
| 796 | <code>INITIALIZE_PASS{BEGIN,END,}</code> and <code>INITIALIZE_{PASS,AG}_DEPENDENCY</code>.</li> |
| 797 | |
Eli Friedman | b414142 | 2011-10-13 22:14:57 +0000 | [diff] [blame] | 798 | <li>The interface for MemDepResult in MemoryDependenceAnalysis has been enhanced |
| 799 | with new return types Unknown and NonFuncLocal, in addition to the existing |
| 800 | types Clobber, Def, and NonLocal.</li> |
| 801 | |
Daniel Dunbar | f0233c6 | 2010-10-04 20:11:41 +0000 | [diff] [blame] | 802 | </ul> |
| 803 | </div> |
Chris Lattner | f6662f9 | 2008-10-13 17:57:36 +0000 | [diff] [blame] | 804 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 805 | </div> |
| 806 | |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 807 | <!-- *********************************************************************** --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 808 | <h2> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 809 | <a name="knownproblems">Known Problems</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 810 | </h2> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 811 | <!-- *********************************************************************** --> |
| 812 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 813 | <div> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 814 | |
Mikhail Glushenkov | f795ef0 | 2009-03-01 18:09:47 +0000 | [diff] [blame] | 815 | <p>This section contains significant known problems with the LLVM system, |
Chris Lattner | e18b32e | 2008-11-10 05:40:34 +0000 | [diff] [blame] | 816 | listed by component. If you run into a problem, please check the <a |
Chris Lattner | c463b27 | 2005-10-29 07:07:09 +0000 | [diff] [blame] | 817 | href="http://llvm.org/bugs/">LLVM bug database</a> and submit a bug if |
Chris Lattner | 5eccca4 | 2003-12-12 21:22:16 +0000 | [diff] [blame] | 818 | there isn't already one.</p> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 819 | |
Chris Lattner | f5ee170 | 2004-03-14 02:03:02 +0000 | [diff] [blame] | 820 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 821 | <h3> |
Chris Lattner | f5ee170 | 2004-03-14 02:03:02 +0000 | [diff] [blame] | 822 | <a name="experimental">Experimental features included with this release</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 823 | </h3> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 824 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 825 | <div> |
Chris Lattner | f5ee170 | 2004-03-14 02:03:02 +0000 | [diff] [blame] | 826 | |
Misha Brukman | 6df9e2c | 2004-05-12 21:46:05 +0000 | [diff] [blame] | 827 | <p>The following components of this LLVM release are either untested, known to |
| 828 | be broken or unreliable, or are in early development. These components should |
| 829 | not be relied on, and bugs should not be filed against them, but they may be |
| 830 | useful to some people. In particular, if you would like to work on one of these |
Chris Lattner | 2b659ef | 2008-02-12 06:29:45 +0000 | [diff] [blame] | 831 | components, please contact us on the <a |
| 832 | href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVMdev list</a>.</p> |
Chris Lattner | f5ee170 | 2004-03-14 02:03:02 +0000 | [diff] [blame] | 833 | |
| 834 | <ul> |
Dan Gohman | 3e6157d | 2011-10-25 00:05:42 +0000 | [diff] [blame] | 835 | <li>The Alpha, CellSPU, MicroBlaze, MSP430, MIPS, PTX, |
Chris Lattner | bb11771 | 2010-10-04 01:29:06 +0000 | [diff] [blame] | 836 | and XCore backends are experimental.</li> |
Chris Lattner | 7d9b6b4 | 2010-10-02 21:59:30 +0000 | [diff] [blame] | 837 | <li><tt>llc</tt> "<tt>-filetype=obj</tt>" is experimental on all targets |
Chris Lattner | 49123fd | 2011-04-06 06:29:50 +0000 | [diff] [blame] | 838 | other than darwin and ELF X86 systems.</li> |
Chris Lattner | be2e1b5 | 2011-03-10 07:43:44 +0000 | [diff] [blame] | 839 | |
Chris Lattner | f5ee170 | 2004-03-14 02:03:02 +0000 | [diff] [blame] | 840 | </ul> |
| 841 | |
| 842 | </div> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 843 | |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 844 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 845 | <h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 846 | <a name="x86-be">Known problems with the X86 back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 847 | </h3> |
John Criswell | c0c186d | 2005-11-08 21:11:33 +0000 | [diff] [blame] | 848 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 849 | <div> |
John Criswell | c0c186d | 2005-11-08 21:11:33 +0000 | [diff] [blame] | 850 | |
| 851 | <ul> |
Anton Korobeynikov | a6094be | 2008-06-08 10:24:13 +0000 | [diff] [blame] | 852 | <li>The X86 backend does not yet support |
| 853 | all <a href="http://llvm.org/PR879">inline assembly that uses the X86 |
| 854 | floating point stack</a>. It supports the 'f' and 't' constraints, but not |
| 855 | 'u'.</li> |
Dan Gohman | 8207ba9 | 2008-06-08 23:05:11 +0000 | [diff] [blame] | 856 | <li>The X86-64 backend does not yet support the LLVM IR instruction |
Chris Lattner | 914ce46 | 2010-04-22 06:28:20 +0000 | [diff] [blame] | 857 | <tt>va_arg</tt>. Currently, front-ends support variadic |
Dan Gohman | 8207ba9 | 2008-06-08 23:05:11 +0000 | [diff] [blame] | 858 | argument constructs on X86-64 by lowering them manually.</li> |
NAKAMURA Takumi | 45c435a | 2011-04-05 08:24:22 +0000 | [diff] [blame] | 859 | <li>Windows x64 (aka Win64) code generator has a few issues. |
| 860 | <ul> |
| 861 | <li>llvm-gcc cannot build the mingw-w64 runtime currently |
| 862 | due to lack of support for the 'u' inline assembly |
| 863 | constraint and for X87 floating point inline assembly.</li> |
| 864 | <li>On mingw-w64, you will see unresolved symbol <tt>__chkstk</tt> |
| 865 | due to <a href="http://llvm.org/bugs/show_bug.cgi?id=8919">Bug 8919</a>. |
| 866 | It is fixed in <a href="http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20110321/118499.html">r128206</a>.</li> |
| 867 | <li>Miss-aligned MOVDQA might crash your program. It is due to |
| 868 | <a href="http://llvm.org/bugs/show_bug.cgi?id=9483">Bug 9483</a>, |
| 869 | lack of handling aligned internal globals.</li> |
| 870 | </ul> |
| 871 | </li> |
| 872 | |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 873 | </ul> |
| 874 | |
| 875 | </div> |
| 876 | |
| 877 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 878 | <h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 879 | <a name="ppc-be">Known problems with the PowerPC back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 880 | </h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 881 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 882 | <div> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 883 | |
| 884 | <ul> |
Nicolas Geoffray | e4285dc | 2007-05-15 09:21:28 +0000 | [diff] [blame] | 885 | <li>The Linux PPC32/ABI support needs testing for the interpreter and static |
Chris Lattner | 57a460e | 2007-05-23 04:39:32 +0000 | [diff] [blame] | 886 | compilation, and lacks support for debug information.</li> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 887 | </ul> |
| 888 | |
| 889 | </div> |
| 890 | |
| 891 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 892 | <h3> |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 893 | <a name="arm-be">Known problems with the ARM back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 894 | </h3> |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 895 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 896 | <div> |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 897 | |
| 898 | <ul> |
Chris Lattner | 57a460e | 2007-05-23 04:39:32 +0000 | [diff] [blame] | 899 | <li>Thumb mode works only on ARMv6 or higher processors. On sub-ARMv6 |
Duncan Sands | c90d68b | 2007-09-26 15:59:54 +0000 | [diff] [blame] | 900 | processors, thumb programs can crash or produce wrong |
Chris Lattner | 57a460e | 2007-05-23 04:39:32 +0000 | [diff] [blame] | 901 | results (<a href="http://llvm.org/PR1388">PR1388</a>).</li> |
John Criswell | 524a5dd | 2009-03-02 15:28:15 +0000 | [diff] [blame] | 902 | <li>Compilation for ARM Linux OABI (old ABI) is supported but not fully tested. |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 903 | </li> |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 904 | </ul> |
| 905 | |
| 906 | </div> |
| 907 | |
| 908 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 909 | <h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 910 | <a name="sparc-be">Known problems with the SPARC back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 911 | </h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 912 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 913 | <div> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 914 | |
| 915 | <ul> |
John Criswell | 524a5dd | 2009-03-02 15:28:15 +0000 | [diff] [blame] | 916 | <li>The SPARC backend only supports the 32-bit SPARC ABI (-m32); it does not |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 917 | support the 64-bit SPARC ABI (-m64).</li> |
| 918 | </ul> |
| 919 | |
| 920 | </div> |
| 921 | |
| 922 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 923 | <h3> |
Bruno Cardoso Lopes | b7e1a4f | 2008-10-25 14:56:26 +0000 | [diff] [blame] | 924 | <a name="mips-be">Known problems with the MIPS back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 925 | </h3> |
Bruno Cardoso Lopes | b7e1a4f | 2008-10-25 14:56:26 +0000 | [diff] [blame] | 926 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 927 | <div> |
Bruno Cardoso Lopes | b7e1a4f | 2008-10-25 14:56:26 +0000 | [diff] [blame] | 928 | |
| 929 | <ul> |
Bruno Cardoso Lopes | b7e1a4f | 2008-10-25 14:56:26 +0000 | [diff] [blame] | 930 | <li>64-bit MIPS targets are not supported yet.</li> |
| 931 | </ul> |
| 932 | |
| 933 | </div> |
| 934 | |
| 935 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 936 | <h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 937 | <a name="alpha-be">Known problems with the Alpha back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 938 | </h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 939 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 940 | <div> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 941 | |
| 942 | <ul> |
| 943 | |
| 944 | <li>On 21164s, some rare FP arithmetic sequences which may trap do not have the |
| 945 | appropriate nops inserted to ensure restartability.</li> |
| 946 | |
John Criswell | c0c186d | 2005-11-08 21:11:33 +0000 | [diff] [blame] | 947 | </ul> |
| 948 | </div> |
| 949 | |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 950 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 951 | <h3> |
Chris Lattner | f3e5bc6 | 2007-05-14 06:56:09 +0000 | [diff] [blame] | 952 | <a name="c-be">Known problems with the C back-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 953 | </h3> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 954 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 955 | <div> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 956 | |
Chris Lattner | 3016ee9 | 2010-09-29 05:34:42 +0000 | [diff] [blame] | 957 | <p>The C backend has numerous problems and is not being actively maintained. |
| 958 | Depending on it for anything serious is not advised.</p> |
| 959 | |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 960 | <ul> |
Chris Lattner | 5733b27 | 2008-06-05 06:35:40 +0000 | [diff] [blame] | 961 | <li><a href="http://llvm.org/PR802">The C backend has only basic support for |
| 962 | inline assembly code</a>.</li> |
Chris Lattner | 725a0d8 | 2007-09-26 06:01:35 +0000 | [diff] [blame] | 963 | <li><a href="http://llvm.org/PR1658">The C backend violates the ABI of common |
| 964 | C++ programs</a>, preventing intermixing between C++ compiled by the CBE and |
Gabor Greif | 4906abe | 2009-03-02 12:02:51 +0000 | [diff] [blame] | 965 | C++ code compiled with <tt>llc</tt> or native compilers.</li> |
Duncan Sands | f74c0cc | 2008-02-10 13:40:55 +0000 | [diff] [blame] | 966 | <li>The C backend does not support all exception handling constructs.</li> |
Duncan Sands | 50723a9 | 2009-02-25 11:51:54 +0000 | [diff] [blame] | 967 | <li>The C backend does not support arbitrary precision integers.</li> |
Chris Lattner | 2629922 | 2006-11-18 07:51:14 +0000 | [diff] [blame] | 968 | </ul> |
| 969 | |
| 970 | </div> |
John Criswell | c0c186d | 2005-11-08 21:11:33 +0000 | [diff] [blame] | 971 | |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 972 | |
| 973 | <!-- ======================================================================= --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 974 | <h3> |
Chris Lattner | 3016ee9 | 2010-09-29 05:34:42 +0000 | [diff] [blame] | 975 | <a name="llvm-gcc">Known problems with the llvm-gcc front-end</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 976 | </h3> |
Chris Lattner | 47588f9 | 2003-10-02 05:07:23 +0000 | [diff] [blame] | 977 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 978 | <div> |
Chris Lattner | c5d658a | 2006-03-03 00:34:26 +0000 | [diff] [blame] | 979 | |
Chad Rosier | e6291d0 | 2011-05-27 22:50:46 +0000 | [diff] [blame] | 980 | <p><b>LLVM 3.0 will be the last release of llvm-gcc.</b></p> |
Chris Lattner | 49123fd | 2011-04-06 06:29:50 +0000 | [diff] [blame] | 981 | |
Chris Lattner | 3016ee9 | 2010-09-29 05:34:42 +0000 | [diff] [blame] | 982 | <p>llvm-gcc is generally very stable for the C family of languages. The only |
| 983 | major language feature of GCC not supported by llvm-gcc is the |
| 984 | <tt>__builtin_apply</tt> family of builtins. However, some extensions |
| 985 | are only supported on some targets. For example, trampolines are only |
| 986 | supported on some targets (these are used when you take the address of a |
| 987 | nested function).</p> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 988 | |
Chris Lattner | 3016ee9 | 2010-09-29 05:34:42 +0000 | [diff] [blame] | 989 | <p>Fortran support generally works, but there are still several unresolved bugs |
| 990 | in <a href="http://llvm.org/bugs/">Bugzilla</a>. Please see the |
| 991 | tools/gfortran component for details. Note that llvm-gcc is missing major |
| 992 | Fortran performance work in the frontend and library that went into GCC after |
| 993 | 4.2. If you are interested in Fortran, we recommend that you consider using |
| 994 | <a href="#dragonegg">dragonegg</a> instead.</p> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 995 | |
Duncan Sands | 3af9633 | 2010-10-04 10:06:56 +0000 | [diff] [blame] | 996 | <p>The llvm-gcc 4.2 Ada compiler has basic functionality, but is no longer being |
| 997 | actively maintained. If you are interested in Ada, we recommend that you |
| 998 | consider using <a href="#dragonegg">dragonegg</a> instead.</p> |
Chris Lattner | 2b659ef | 2008-02-12 06:29:45 +0000 | [diff] [blame] | 999 | </div> |
| 1000 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 1001 | </div> |
| 1002 | |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1003 | <!-- *********************************************************************** --> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 1004 | <h2> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1005 | <a name="additionalinfo">Additional Information</a> |
NAKAMURA Takumi | 06c6d9a | 2011-04-18 01:17:51 +0000 | [diff] [blame] | 1006 | </h2> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1007 | <!-- *********************************************************************** --> |
| 1008 | |
NAKAMURA Takumi | 074eeaa | 2011-04-21 01:52:00 +0000 | [diff] [blame] | 1009 | <div> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1010 | |
Chris Lattner | 416db10 | 2005-05-16 17:13:10 +0000 | [diff] [blame] | 1011 | <p>A wide variety of additional information is available on the <a |
NAKAMURA Takumi | b9a3363 | 2011-04-09 02:13:37 +0000 | [diff] [blame] | 1012 | href="http://llvm.org/">LLVM web page</a>, in particular in the <a |
Chris Lattner | b4b0ce7 | 2007-05-18 00:44:29 +0000 | [diff] [blame] | 1013 | href="http://llvm.org/docs/">documentation</a> section. The web page also |
Reid Spencer | 669ed45 | 2007-07-09 08:04:31 +0000 | [diff] [blame] | 1014 | contains versions of the API documentation which is up-to-date with the |
| 1015 | Subversion version of the source code. |
Misha Brukman | 109d9e8 | 2005-03-30 19:14:24 +0000 | [diff] [blame] | 1016 | You can access versions of these documents specific to this release by going |
| 1017 | into the "<tt>llvm/doc/</tt>" directory in the LLVM tree.</p> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1018 | |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1019 | <p>If you have any questions or comments about LLVM, please feel free to contact |
Chris Lattner | c463b27 | 2005-10-29 07:07:09 +0000 | [diff] [blame] | 1020 | us via the <a href="http://llvm.org/docs/#maillist"> mailing |
Chris Lattner | 5eccca4 | 2003-12-12 21:22:16 +0000 | [diff] [blame] | 1021 | lists</a>.</p> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1022 | |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1023 | </div> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1024 | |
| 1025 | <!-- *********************************************************************** --> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1026 | |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1027 | <hr> |
Misha Brukman | 2061e89 | 2003-11-22 01:23:39 +0000 | [diff] [blame] | 1028 | <address> |
Misha Brukman | 38847d5 | 2003-12-21 22:53:21 +0000 | [diff] [blame] | 1029 | <a href="http://jigsaw.w3.org/css-validator/check/referer"><img |
Misha Brukman | 4440870 | 2008-12-11 17:34:48 +0000 | [diff] [blame] | 1030 | src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS"></a> |
Misha Brukman | 2061e89 | 2003-11-22 01:23:39 +0000 | [diff] [blame] | 1031 | <a href="http://validator.w3.org/check/referer"><img |
Misha Brukman | 4440870 | 2008-12-11 17:34:48 +0000 | [diff] [blame] | 1032 | src="http://www.w3.org/Icons/valid-html401-blue" alt="Valid HTML 4.01"></a> |
Misha Brukman | 2061e89 | 2003-11-22 01:23:39 +0000 | [diff] [blame] | 1033 | |
Chris Lattner | b4b0ce7 | 2007-05-18 00:44:29 +0000 | [diff] [blame] | 1034 | <a href="http://llvm.org/">LLVM Compiler Infrastructure</a><br> |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1035 | Last modified: $Date$ |
Misha Brukman | 2061e89 | 2003-11-22 01:23:39 +0000 | [diff] [blame] | 1036 | </address> |
Chris Lattner | 79c3fe1 | 2003-10-02 04:57:28 +0000 | [diff] [blame] | 1037 | |
Misha Brukman | 500bc30 | 2003-11-22 00:38:41 +0000 | [diff] [blame] | 1038 | </body> |
| 1039 | </html> |