IR: Do not canonicalize constant GEPs into an out-of-bounds array access

[oota-llvm.git] / docs / ReleaseNotes.rst

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 4b71543ebef6257f3931236939ecf74eb352eda9..66b06a0837298e3ead4934ef0899d86f92394f96 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -41,6 +41,20 @@ Non-comprehensive list of changes in this release
    functionality, or simply have a lot to talk about), see the `NOTE` below
    for adding a new subsection.
 
+* This is expected to be the last release of LLVM which compiles using a C++98
+  toolchain. We expect to start using some C++11 features in LLVM and other
+  sub-projects starting after this release. That said, we are committed to
+  supporting a reasonable set of modern C++ toolchains as the host compiler on
+  all of the platforms. This will at least include Visual Studio 2012 on
+  Windows, and Clang 3.1 or GCC 4.7.x on Mac and Linux. The final set of
+  compilers (and the C++11 features they support) is not set in stone, but we
+  wanted users of LLVM to have a heads up that the next release will involve
+  a substantial change in the host toolchain requirements.
+
+* The regression tests now fail if any command in a pipe fails. To disable it in
+  a directory, just add ``config.pipefail = False`` to its ``lit.local.cfg``.
+  See :doc:`Lit <CommandGuide/lit>` for the details.
+
 * Support for exception handling has been removed from the old JIT. Use MCJIT
   if you need EH support.
 
@@ -56,7 +70,15 @@ Non-comprehensive list of changes in this release
 
 * Support for building using Visual Studio 2008 has been dropped. Use VS 2010
   or later instead. For more information, see the `Getting Started using Visual
-  Studio <GettingStartedVS.html>` page).
+  Studio <GettingStartedVS.html>`_ page.
+
+* The Loop Vectorizer that was previously enabled for -O3 is now enabled for
+  -Os and -O2.
+
+* The new SLP Vectorizer is now enabled by default.
+
+* llvm-ar now uses the new Object library and produces archives and
+  symbol tables in the gnu format.
 
 * ... next change ...