[llvm-commits] [llvm] r83736 - /llvm/trunk/docs/ReleaseNotes-2.6.html

[Chris Lattner]

Author: lattner
Date: Sat Oct 10 17:02:58 2009
New Revision: 83736

URL: http://llvm.org/viewvc/llvm-project?rev=83736&view=rev
Log:
down to 'major changes'

Modified:
    llvm/trunk/docs/ReleaseNotes-2.6.html

Modified: llvm/trunk/docs/ReleaseNotes-2.6.html
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/ReleaseNotes-2.6.html?rev=83736&r1=83735&r2=83736&view=diff

==============================================================================
--- llvm/trunk/docs/ReleaseNotes-2.6.html (original)
+++ llvm/trunk/docs/ReleaseNotes-2.6.html Sat Oct 10 17:02:58 2009
@@ -759,17 +759,44 @@
 
 <div class="doc_text">
 
+<p>This release includes a number of new APIs that are used internally, which
+   may also be useful for external clients.
+</p>
+
 <ul>
-<li>
-  New PrettyStackTrace, crashes of llvm tools should give some indication of what the compiler was doing at the time of the crash (e.g. running a pass), and print out command line arguments.
-  StringRef class, Twine class.
-    New WeakVH and AssertingVH and CallbackVH classes.
-  New llvm/ADT/Triple class.
- llvm_report_error() error handling API (llvm/Support/ErrorHandling.h)
-  New llvm/System/Atomic.h, llvm/System/RWMutex.h for portable atomic ops, rw locks.
-  New SourceMgr, SMLoc classes for simple parsers with caret diagnostics and #include support, (used by
-    tablegen, llvm-mc, the .ll parser, FileCheck, etc)
-</li>
+<li>New <a href="http://llvm.org/doxygen/PrettyStackTrace_8h-source.html">
+    PrettyStackTrace classes</a> allows crashes of llvm tools (and applications
+    that integrate them) to provide more detailed indication of what the
+    compiler was doing at the time of the crash (e.g. running a pass).
+    At the top level for each LLVM tool, it includes the command line arguments.
+    </li>
+<li>New <a href="http://llvm.org/doxygen/StringRef_8h-source.html">StringRef</a>
+    and <a href="http://llvm.org/doxygen/Twine_8h-source.html">Twine</a> classes
+    make operations on character ranges and
+    string concatenation to be more efficient.  StringRef is just a <tt>const
+    char*</tt> with a length, Twine is a light-weight rope.</li>
+<li>LLVM has new WeakVH, AssertingVH, and CallbackVH classes, which make it
+    easier to write LLVM IR transformations.  WeakVH is automatically drops to
+    null when the referenced Value is deleted, and is updated across a
+    replaceAllUsesWith operation.  AssertingVH aborts the program if the
+    referenced value is destroyed while it is being referenced.  CallbackVH is
+    a customizable class for handling value references.  See <a
+    href="http://llvm.org/doxygen/ValueHandle_8h-source.html">ValueHandle.h</a> 
+    for more information.</li>
+<li>The new '<a href="http://llvm.org/doxygen/Triple_8h-source.html">Triple
+    </a>' class centralizes a lot of logic that reasons about target
+    triples.</li>
+<li>The new '<a href="http://llvm.org/doxygen/ErrorHandling.h_8h-source.html">
+    llvm_report_error()</a>' set of APIs allows tools to embed the LLVM
+    optimizer and backend and recover from previously unrecoverable errors.</li>
+<li>LLVM has new abstractions for <a 
+    href="http://llvm.org/doxygen/Atomic_8h-source.html">atomic operations</a>
+    and <a href="http://llvm.org/doxygen/RWMutex_8h-source.html">reader/writer
+    locks</a>.</li>
+<li>LLVM has new <a href="http://llvm.org/doxygen/SourceMgr_8h-source.html">
+    SourceMgr and SMLoc classes</a> which implement caret diagnostics and basic
+    include stack processing for simple parsers. It is used by tablegen,
+    llvm-mc, the .ll parser and FileCheck.</li>
 </ul>
 
 
@@ -794,17 +821,21 @@
 overhead.  Combined, the generated profile information is both more correct and
 imposes about half as much overhead (2.6. from 12% to 6% overhead on SPEC
 CPU2000).</li>
-<li>Many extensions to the C APIs.</li>
+<li>The C bindings (in the llvm/include/llvm-c directory) include many newly
+    supported APIs.</li>
 <li>LLVM 2.6 includes a brand new experimental LLVM bindings to the Ada2005
-programming language.</li>
-
-<li>LLVMC:
+    programming language.</li>
 
-* Dynamic plugins now work on Windows.
-* New option property: init. Makes possible to provide default values for
- options defined in plugins (interface to cl::init).
-* New example: Skeleton, shows how to create a standalone LLVMC-based driver.
-* New example: mcc16, a driver for the PIC16 toolchain.</li>
+<li>The LLVMC driver has several new features:
+  <ul>
+  <li>Dynamic plugins now work on Windows.</li>
+  <li>New option property: init. Makes possible to provide default values for
+      options defined in plugins (interface to cl::init).</li>
+  <li>New example: Skeleton, shows how to create a standalone LLVMC-based
+      driver.</li>
+  <li>New example: mcc16, a driver for the PIC16 toolchain.</li>
+  </ul>
+</li>
 
 </ul>