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authorChris Lattner <sabre@nondot.org>2011-11-27 18:47:37 +0000
committerChris Lattner <sabre@nondot.org>2011-11-27 18:47:37 +0000
commit1ab8ce93720c7d7aacd30615a68b22843a2043c8 (patch)
tree0e2d545c5ae8b468da41cce5cdbbb48617b329ef /docs/ReleaseNotes.html
parentc608b708ef4844aa2ece4ea2e1cbce9835b479df (diff)
downloadexternal_llvm-1ab8ce93720c7d7aacd30615a68b22843a2043c8.zip
external_llvm-1ab8ce93720c7d7aacd30615a68b22843a2043c8.tar.gz
external_llvm-1ab8ce93720c7d7aacd30615a68b22843a2043c8.tar.bz2
some random notes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145190 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -45,7 +45,8 @@ Release Notes</a>.</h1>
<p>This document contains the release notes for the LLVM Compiler
Infrastructure, release 3.0. Here we describe the status of LLVM, including
- major improvements from the previous release and significant known problems.
+ major improvements from the previous release, improvements in various
+ subprojects of LLVM, and some of the current users of the code.
All LLVM releases may be downloaded from
the <a href="http://llvm.org/releases/">LLVM releases web site</a>.</p>
@@ -62,14 +63,6 @@ Release Notes</a>.</h1>
</div>
-<!-- Features that need text if they're finished for 3.1:
- ARM EHABI
- combiner-aa?
- strong phi elim
- loop dependence analysis
- CorrelatedValuePropagation
- lib/Transforms/IPO/MergeFunctions.cpp => consider for 3.1.
- -->
<!-- *********************************************************************** -->
<h2>
@@ -99,7 +92,7 @@ Release Notes</a>.</h1>
provides a modular, library-based architecture that makes it suitable for
creating or integrating with other development tools. Clang is considered a
production-quality compiler for C, Objective-C, C++ and Objective-C++ on x86
- (32- and 64-bit), and for darwin/arm targets.</p>
+ (32- and 64-bit), and for Darwin/ARM targets.</p>
<p>In the LLVM 3.0 time-frame, the Clang team has made many improvements:</p>
@@ -109,9 +102,9 @@ Release Notes</a>.</h1>
<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
+ 2011</a> standard (aka "C++'0x"), including implementations of non-static data member
+ initializers, alias templates, delegating constructors, range-based
+ for loops, and implicitly-generated move constructors and move assignment
operators, among others.</li>
<li>Implemented support for some features of the upcoming C1x standard,
@@ -127,18 +120,18 @@ Release Notes</a>.</h1>
Automatic Reference Counting</a> (ARC) and an improved memory model
cleanly separating object and C memory.</li>
- <li>A migration tool for moving legacy code to ARC</li>
+ <li>A migration tool for moving manual retain/release code to ARC</li>
<li>Better support for data hiding, allowing instance variables to be
declared in implementation contexts or class extensions</li>
- <li>Weak linking for classes</li>
+ <li>Weak linking support for Objective-C classes</li>
<li>Improved static type checking by inferring the return type of methods
such as +alloc and -init.</li>
</ul>
- Some new features require either the Mac OS X 10.7 / iOS 5 Objective-C
- runtime, or version 1.6 or later of the GNUstep Objective-C runtime
- version.</li>
+ Some new Objective-C features require either the Mac OS X 10.7 / iOS 5
+ Objective-C runtime, or version 1.6 or later of the GNUstep Objective-C
+ runtime version.</li>
<li>Implemented a number of optimizations in <tt>libclang</tt>, the Clang C
interface, to improve the performance of code completion and the mapping
@@ -169,6 +162,7 @@ Release Notes</a>.</h1>
<p>The 3.0 release has the following notable changes:</p>
+ <ul>
<li>GCC version 4.6 is now fully supported.</li>
<li>Patching and building GCC is no longer required: the plugin should work
@@ -177,16 +171,12 @@ Release Notes</a>.</h1>
<li>The <tt>-fplugin-arg-dragonegg-enable-gcc-optzns</tt> option, which runs
GCC's optimizers as well as LLVM's, now works much better. This is the
- option to use if you want ultimate performance! It not yet completely
- stable: it may cause the plugin to crash.</li>
+ option to use if you want ultimate performance! It is still experimental
+ though: it may cause the plugin to crash.</li>
<li>The type and constant conversion logic has been almost entirely rewritten,
fixing a multitude of obscure bugs.</li>
-<ul>
-<!--
-<li></li>
--->
</ul>
</div>
@@ -207,7 +197,9 @@ Release Notes</a>.</h1>
implementations of this and other low-level routines (some are 3x faster than
the equivalent libgcc routines).</p>
-<p>In the LLVM 3.0 timeframe,</p>
+<p>In the LLVM 3.0 timeframe, the target specific ARM code has converted to
+ "unified" assembly syntax, and several new functions have been added to the
+ library.</p>
</div>
@@ -740,6 +732,15 @@ be used to verify some algorithms.
<div>
+ <!-- Features that need text if they're finished for 3.1:
+ ARM EHABI
+ combiner-aa?
+ strong phi elim
+ loop dependence analysis
+ CorrelatedValuePropagation
+ lib/Transforms/IPO/MergeFunctions.cpp => consider for 3.1.
+ -->
+
<p><b>llvm-gcc is gone</b>. LLVM's configure script doesn't depend on llvm-gcc anymore, clean layering.</p>
<p>LLVM 3.0 includes several major new capabilities:</p>