[llvm-branch-commits] [llvm-branch] r183207 - Update the release notes for the 3.3 release.
Bill Wendling
isanbard at gmail.com
Mon Jun 3 23:05:49 PDT 2013
Author: void
Date: Tue Jun 4 01:05:49 2013
New Revision: 183207
URL: http://llvm.org/viewvc/llvm-project?rev=183207&view=rev
Log:
Update the release notes for the 3.3 release.
Modified:
llvm/branches/release_33/docs/CommandLine.rst
llvm/branches/release_33/docs/LangRef.rst
llvm/branches/release_33/docs/ReleaseNotes.rst
Modified: llvm/branches/release_33/docs/CommandLine.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_33/docs/CommandLine.rst?rev=183207&r1=183206&r2=183207&view=diff
==============================================================================
--- llvm/branches/release_33/docs/CommandLine.rst (original)
+++ llvm/branches/release_33/docs/CommandLine.rst Tue Jun 4 01:05:49 2013
@@ -618,6 +618,8 @@ would yield the help output:
-help - display available options (-help-hidden for more)
-o <filename> - Specify output filename
+.. _grouping options into categories:
+
Grouping options into categories
--------------------------------
Modified: llvm/branches/release_33/docs/LangRef.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_33/docs/LangRef.rst?rev=183207&r1=183206&r2=183207&view=diff
==============================================================================
--- llvm/branches/release_33/docs/LangRef.rst (original)
+++ llvm/branches/release_33/docs/LangRef.rst Tue Jun 4 01:05:49 2013
@@ -2868,11 +2868,10 @@ All globals of this sort should have a s
The '``llvm.used``' Global Variable
-----------------------------------
-The ``@llvm.used`` global is an array which has
- :ref:`appending linkage <linkage_appending>`. This array contains a list of
-pointers to global variables, functions and aliases which may optionally have a
-pointer cast formed of bitcast or getelementptr. For example, a legal
-use of it is:
+The ``@llvm.used`` global is an array which has :ref:`appending linkage
+<linkage_appending>`. This array contains a list of pointers to global
+variables, functions and aliases which may optionally have a pointer cast formed
+of bitcast or getelementptr. For example, a legal use of it is:
.. code-block:: llvm
Modified: llvm/branches/release_33/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_33/docs/ReleaseNotes.rst?rev=183207&r1=183206&r2=183207&view=diff
==============================================================================
--- llvm/branches/release_33/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_33/docs/ReleaseNotes.rst Tue Jun 4 01:05:49 2013
@@ -5,12 +5,6 @@ LLVM 3.3 Release Notes
.. contents::
:local:
-.. warning::
- These are in-progress notes for the upcoming LLVM 3.3 release. You may
- prefer the `LLVM 3.2 Release Notes <http://llvm.org/releases/3.2/docs
- /ReleaseNotes.html>`_.
-
-
Introduction
============
@@ -34,13 +28,6 @@ page <http://llvm.org/releases/>`_.
Non-comprehensive list of changes in this release
=================================================
-.. NOTE
- For small 1-3 sentence descriptions, just add an entry at the end of
- this list. If your description won't fit comfortably in one bullet
- point (e.g. maybe you would like to give an example of the
- functionality, or simply have a lot to talk about), see the `NOTE` below
- for adding a new subsection.
-
* The CellSPU port has been removed. It can still be found in older versions.
* The IR-level extended linker APIs (for example, to link bitcode files out of
@@ -70,17 +57,15 @@ Non-comprehensive list of changes in thi
examples of the new syntax. The old syntax using register classes still
works, but it will be removed in a future LLVM release.
-* ... next change ...
-
-.. NOTE
- If you would like to document a larger change, then you can add a
- subsection about it right here. You can copy the following boilerplate
- and un-indent it (the indentation causes it to be inside this comment).
+* MCJIT now supports exception handling. Support for it in the old jit will be
+ removed in the 3.4 release.
- Special New Feature
- -------------------
+* Command line options can now be grouped into categories which are shown in
+ the output of ``-help``. See :ref:`grouping options into categories`.
- Makes programs 10x faster by doing Special New Thing.
+* The appearance of command line options in ``-help`` that are inherited by
+ linking with libraries that use the LLVM Command line support library can now
+ be modified at runtime. See :ref:`cl::getRegisteredOptions`.
AArch64 target
--------------
@@ -99,9 +84,9 @@ GNU-style thread local storage and inlin
Hexagon Target
--------------
-- Removed support for legacy hexagonv2 and hexagonv3 processor
- architectures which are no longer in use. Currently supported
- architectures are hexagonv4 and hexagonv5.
+Removed support for legacy hexagonv2 and hexagonv3 processor architectures which
+are no longer in use. Currently supported architectures arehexagonv4 and
+hexagonv5.
Loop Vectorizer
---------------
@@ -126,16 +111,16 @@ SLP Vectorizer
--------------
LLVM now has a new SLP vectorizer. The new SLP vectorizer is not enabled by
-default but can be enabled using the clang flag -fslp-vectorize. The BB-vectorizer
-can also be enabled using the command line flag -fslp-vectorize-aggressive.
+default but can be enabled using the clang flag ``-fslp-vectorize``. The
+BB-vectorizer can also be enabled using the command line flag
+``-fslp-vectorize-aggressive``.
R600 Backend
------------
-The R600 backend was added in this release, it supports AMD GPUs
-(HD2XXX - HD7XXX). This backend is used in AMD's Open Source
-graphics / compute drivers which are developed as part of the `Mesa3D
-<http://www.mesa3d.org>`_ project.
+The R600 backend was added in this release, it supports AMD GPUs (HD2XXX -
+HD7XXX). This backend is used in AMD's Open Source graphics / compute drivers
+which are developed as part of the `Mesa3D <http://www.mesa3d.org>`_ project.
SystemZ/s390x Backend
---------------------
@@ -145,41 +130,108 @@ is restricted to GNU/Linux (GNU triplet
z10 or greater.
+Sub-project Status Update
+=========================
+
+In addition to the core LLVM 3.3 distribution of production-quality compiler
+infrastructure, the LLVM project includes sub-projects that use the LLVM core
+and share the same distribution license. This section provides updates on these
+sub-projects.
+
+
+LLDB: Low Level Debugger
+------------------------
+
+`LLDB <http://lldb.llvm.org/>`_ is a ground-up implementation of a command-line
+debugger, as well as a debugger API that can be used from scripts and other
+applications. LLDB uses the following components of the LLVM core distribution
+to support the latest language features and target support:
+
+- the Clang parser for high-quality parsing of C, C++ and Objective C
+- the LLVM disassembler
+- the LLVM JIT compiler (MCJIT) for expression evaluation
+
+The `3.3 release <http://llvm.org/apt/>`_ has the following notable changes.
+
+Linux Features:
+
+- Support for watchpoints
+- vim integration for lldb commands and program status using a `vim plug-in
+ <http://llvm.org/svn/llvm-project/lldb/trunk/utils/vim-lldb/README>`_
+- Improved register support including vector registers
+- Builds with cmake/ninja/auto-tools/clang 3.3/gcc 4.6
+
+Linux Improvements:
+
+- Debugging multi-threaded programs
+- Debugging i386 programs
+- Process list, attach and fork
+- Expression evaluation
+
+
External Open Source Projects Using LLVM 3.3
============================================
-An exciting aspect of LLVM is that it is used as an enabling technology for
-a lot of other language and tools projects. This section lists some of the
+An exciting aspect of LLVM is that it is used as an enabling technology for a
+lot of other language and tools projects. This section lists some of the
projects that have already been updated to work with LLVM 3.3.
Portable Computing Language (pocl)
----------------------------------
-In addition to producing an easily portable open source OpenCL
-implementation, another major goal of `pocl <http://pocl.sourceforge.net/>`_
-is improving performance portability of OpenCL programs with
-compiler optimizations, reducing the need for target-dependent manual
-optimizations. An important part of pocl is a set of LLVM passes used to
-statically parallelize multiple work-items with the kernel compiler, even in
-the presence of work-group barriers. This enables static parallelization of
-the fine-grained static concurrency in the work groups in multiple ways.
+In addition to producing an easily portable open source OpenCL implementation,
+another major goal of `pocl <http://pocl.sourceforge.net/>`_ is improving
+performance portability of OpenCL programs with compiler optimizations, reducing
+the need for target-dependent manual optimizations. An important part of pocl is
+a set of LLVM passes used to statically parallelize multiple work-items with the
+kernel compiler, even in the presence of work-group barriers. This enables
+static parallelization of the fine-grained static concurrency in the work groups
+in multiple ways.
TTA-based Co-design Environment (TCE)
-------------------------------------
-`TCE <http://tce.cs.tut.fi/>`_ is a toolset for designing new
-processors based on the Transport triggered architecture (TTA).
-The toolset provides a complete co-design flow from C/C++
-programs down to synthesizable VHDL/Verilog and parallel program binaries.
-Processor customization points include the register files, function units,
-supported operations, and the interconnection network.
+`TCE <http://tce.cs.tut.fi/>`_ is a toolset for designing new processors based
+on the Transport triggered architecture (TTA). The toolset provides a complete
+co-design flow from C/C++ programs down to synthesizable VHDL/Verilog and
+parallel program binaries. Processor customization points include the register
+files, function units, supported operations, and the interconnection network.
TCE uses Clang and LLVM for C/C++/OpenCL C language support, target independent
-optimizations and also for parts of code generation. It generates new
-LLVM-based code generators "on the fly" for the designed TTA processors and
-loads them in to the compiler backend as runtime libraries to avoid
-per-target recompilation of larger parts of the compiler chain.
+optimizations and also for parts of code generation. It generates new LLVM-based
+code generators "on the fly" for the designed TTA processors and loads them in
+to the compiler backend as runtime libraries to avoid per-target recompilation
+of larger parts of the compiler chain.
+
+Just-in-time Adaptive Decoder Engine (Jade)
+-------------------------------------------
+
+`Jade <https://github.com/orcc/jade>`_ (Just-in-time Adaptive Decoder Engine) is
+a generic video decoder engine using LLVM for just-in-time compilation of video
+decoder configurations. Those configurations are designed by MPEG Reconfigurable
+Video Coding (RVC) committee. MPEG RVC standard is built on a stream-based
+dataflow representation of decoders. It is composed of a standard library of
+coding tools written in RVC-CAL language and a dataflow configuration --- block
+diagram --- of a decoder.
+
+Jade project is hosted as part of the Open RVC-CAL Compiler (`Orcc
+<http://orcc.sf.net>`_) and requires it to translate the RVC-CAL standard
+library of video coding tools into an LLVM assembly code.
+
+LDC - the LLVM-based D compiler
+-------------------------------
+
+`D <http://dlang.org>`_ is a language with C-like syntax and static typing. It
+pragmatically combines efficiency, control, and modeling power, with safety and
+programmer productivity. D supports powerful concepts like Compile-Time Function
+Execution (CTFE) and Template Meta-Programming, provides an innovative approach
+to concurrency and offers many classical paradigms.
+
+`LDC <http://wiki.dlang.org/LDC>`_ uses the frontend from the reference compiler
+combined with LLVM as backend to produce efficient native code. LDC targets
+x86/x86_64 systems like Linux, OS X and Windows and also Linux/PPC64. Ports to
+other architectures like ARM are underway.
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