forked from OSchip/llvm-project
add a bunch of random notes and fix some issues noticed by Gabor.
This is not ready for review or hacking, this is a work in progress :) llvm-svn: 46816
This commit is contained in:
Chris Lattner
parent
afa5f492e5
commit
cdc44ed525
|
|
@ -79,14 +79,38 @@ llvm-gcc 4.2 in this release cycle because <b>LLVM 2.2 is the last release
|
|||
that will support llvm-gcc 4.0</b>: LLVM 2.3 will only support the llvm-gcc
|
||||
4.2 front-end.</p>
|
||||
|
||||
<p>The <a href="http://clang.llvm.org/">clang project</a> is an effort
|
||||
to build a set of new front-end technology for the LLVM optimizer and code
|
||||
generator. Currently, its C and Objective-C support is maturing nicely, and it
|
||||
has advanced source-to-source analysis and transformation capabilities. If you
|
||||
are interested in building source-level tools for C and Objective-C (and
|
||||
eventually C++), you should take a look. However, note that clang is not an
|
||||
official part of the LLVM 2.2 release. If you are interested in this project,
|
||||
please see the web site and check it out from SVN head.</p>
|
||||
<p>The <a href="http://clang.llvm.org/">clang project</a> is an effort to build
|
||||
a set of new 'llvm native' front-end technologies for the LLVM optimizer
|
||||
and code generator. Currently, its C and Objective-C support is maturing
|
||||
nicely, and it has advanced source-to-source analysis and transformation
|
||||
capabilities. If you are interested in building source-level tools for C and
|
||||
Objective-C (and eventually C++), you should take a look. However, note that
|
||||
clang is not an official part of the LLVM 2.2 release. If you are interested in
|
||||
this project, please see the web site.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<!--=========================================================================-->
|
||||
<div class="doc_subsection">
|
||||
<a name="majorfeatures">Major New Features</a>
|
||||
</div>
|
||||
|
||||
<div class="doc_text">
|
||||
|
||||
<p>Dale contributed full support for long double on x86/x86-64 (where it is 80
|
||||
bits) and on Darwin PPC/PPC64 (where it is 128 bits).</p>
|
||||
|
||||
<p>Ada, gfortran</p>
|
||||
|
||||
<p>
|
||||
debug improvements -O0
|
||||
EH.
|
||||
|
||||
Gordon: GC Revamp. docs/GarbageCollection.html
|
||||
|
||||
Kaleidescope: docs/tutorial
|
||||
|
||||
Gordon: C and Ocaml Bindings
|
||||
|
||||
</div>
|
||||
|
||||
|
|
@ -102,8 +126,12 @@ optimizer, speeding it up and making it more aggressive. For example:</p>
|
|||
|
||||
<ul>
|
||||
|
||||
<li>.</li>
|
||||
<li>Daniel Berlin and (?) rewrote Andersen's alias analysis (which is not
|
||||
enabled by default) to be several orders of magnitude faster, implmented Offline
|
||||
Variable Substitution.</li>
|
||||
|
||||
|
||||
Devang: LoopIndexSplit is enabled by default.
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
|
|
@ -115,13 +143,17 @@ optimizer, speeding it up and making it more aggressive. For example:</p>
|
|||
|
||||
<div class="doc_text">
|
||||
|
||||
<p>One of the main focuses of this release was performance tuning and bug
|
||||
<p>foci of this release was performance tuning and bug
|
||||
fixing. In addition to these, several new major changes occurred:</p>
|
||||
|
||||
<ul>
|
||||
|
||||
<li>.</li>
|
||||
<li>Owen contributed Machine Loop info, domintors, etc.</li>
|
||||
|
||||
<li>Dan added support for emitting debug information with .file and .loc on
|
||||
targets that support it</li>
|
||||
|
||||
<li>Evan physical register dependencies in the BURR scheduler</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
|
|
@ -137,7 +169,8 @@ optimizer, speeding it up and making it more aggressive. For example:</p>
|
|||
</p>
|
||||
|
||||
<ul>
|
||||
<li>.</li>
|
||||
<li>Evan X86 now models EFLAGS in instructions.</li>
|
||||
<li>Evan: If conversion on by default for ARM.</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
|
|
@ -204,7 +237,7 @@ optimizer, speeding it up and making it more aggressive. For example:</p>
|
|||
(and probably other unix-like systems).</li>
|
||||
<li>PowerPC and X86-based Mac OS X systems, running 10.3 and above in 32-bit and
|
||||
64-bit modes.</li>
|
||||
<li>Intel and AMD machines running on Win32 using MinGW libraries (native)</li>
|
||||
<li>Intel and AMD machines running on Win32 using MinGW libraries (native).</li>
|
||||
<li>Intel and AMD machines running on Win32 with the Cygwin libraries (limited
|
||||
support is available for native builds with Visual C++).</li>
|
||||
<li>Sun UltraSPARC workstations running Solaris 8.</li>
|
||||
|
|
@ -250,8 +283,8 @@ useful to some people. In particular, if you would like to work on one of these
|
|||
components, please contact us on the <a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">LLVMdev list</a>.</p>
|
||||
|
||||
<ul>
|
||||
<li>The <tt>-cee</tt> pass is known to be buggy, and may be removed in a
|
||||
future release.</li>
|
||||
<li>The <tt>-cee</tt> pass is known to be buggy and will be removed in
|
||||
LLVM 2.3.</li>
|
||||
<li>The MSIL, IA64, Alpha, and MIPS backends are experimental.</li>
|
||||
<li>The LLC "<tt>-filetype=asm</tt>" (the default) is the only supported
|
||||
value for this option.</li>
|
||||
|
|
@ -400,7 +433,7 @@ programs.</li>
|
|||
|
||||
<div class="doc_text">
|
||||
|
||||
<p>llvm-gcc4 does not currently support <a href="http://llvm.org/PR869">Link-Time
|
||||
<p>llvm-gcc does not currently support <a href="http://llvm.org/PR869">Link-Time
|
||||
Optimization</a> on most platforms "out-of-the-box". Please inquire on the
|
||||
llvmdev mailing list if you are interested.</p>
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue