2019-07-18 19:51:05 +08:00
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=========================
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2021-07-28 12:51:07 +08:00
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LLVM 14.0.0 Release Notes
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2019-07-18 19:51:05 +08:00
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=========================
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2012-12-10 07:14:26 +08:00
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.. contents::
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:local:
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2013-01-20 11:29:50 +08:00
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.. warning::
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2021-07-28 12:51:07 +08:00
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These are in-progress notes for the upcoming LLVM 14 release.
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2017-02-10 07:03:34 +08:00
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Release notes for previous releases can be found on
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2018-09-10 16:50:31 +08:00
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`the Download Page <https://releases.llvm.org/download.html>`_.
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2012-12-10 07:14:26 +08:00
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Introduction
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============
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This document contains the release notes for the LLVM Compiler Infrastructure,
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2021-07-28 12:51:07 +08:00
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release 14.0.0. Here we describe the status of LLVM, including major improvements
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2012-12-10 07:14:26 +08:00
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from the previous release, improvements in various subprojects of LLVM, and
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some of the current users of the code. All LLVM releases may be downloaded
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2018-09-10 16:50:31 +08:00
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from the `LLVM releases web site <https://llvm.org/releases/>`_.
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2012-12-10 07:14:26 +08:00
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For more information about LLVM, including information about the latest
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2018-09-10 16:50:31 +08:00
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release, please check out the `main LLVM web site <https://llvm.org/>`_. If you
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2012-12-10 07:14:26 +08:00
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have questions or comments, the `LLVM Developer's Mailing List
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2018-09-10 16:50:31 +08:00
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<https://lists.llvm.org/mailman/listinfo/llvm-dev>`_ is a good place to send
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2012-12-10 07:14:26 +08:00
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them.
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2020-01-15 17:02:56 +08:00
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Note that if you are reading this file from a Git checkout or the main
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2012-12-10 07:14:26 +08:00
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LLVM web page, this document applies to the *next* release, not the current
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one. To see the release notes for a specific release, please see the `releases
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2018-09-10 16:50:31 +08:00
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page <https://llvm.org/releases/>`_.
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2012-12-10 07:14:26 +08:00
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2013-01-20 11:29:50 +08:00
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Non-comprehensive list of changes in this release
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=================================================
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.. NOTE
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For small 1-3 sentence descriptions, just add an entry at the end of
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this list. If your description won't fit comfortably in one bullet
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point (e.g. maybe you would like to give an example of the
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functionality, or simply have a lot to talk about), see the `NOTE` below
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for adding a new subsection.
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2019-11-09 02:05:37 +08:00
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2013-01-20 11:29:50 +08:00
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.. NOTE
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If you would like to document a larger change, then you can add a
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subsection about it right here. You can copy the following boilerplate
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and un-indent it (the indentation causes it to be inside this comment).
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2013-01-20 11:29:50 +08:00
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Special New Feature
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-------------------
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2013-01-20 11:29:50 +08:00
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Makes programs 10x faster by doing Special New Thing.
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2021-07-28 12:51:07 +08:00
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* ...
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2019-12-25 10:12:15 +08:00
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2016-03-29 14:55:56 +08:00
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Changes to the LLVM IR
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----------------------
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2021-09-02 02:53:53 +08:00
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* Using the legacy pass manager for the optimization pipeline is deprecated and
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will be removed after LLVM 14. In the meantime, only minimal effort will be
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made to maintain the legacy pass manager for the optimization pipeline.
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2021-09-14 22:33:33 +08:00
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* Max allowed integer type was reduced from 2^24-1 bits to 2^23 bits.
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2021-10-12 01:19:43 +08:00
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* Max allowed alignment was increased from 2^29 to 2^32.
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2021-05-02 10:04:42 +08:00
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2019-07-09 18:10:48 +08:00
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Changes to building LLVM
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------------------------
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* ...
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2020-10-02 05:35:28 +08:00
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2020-08-22 05:22:06 +08:00
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Changes to TableGen
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-------------------
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2021-06-22 23:43:36 +08:00
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Changes to the AArch64 Backend
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------------------------------
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2021-06-22 23:43:36 +08:00
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2021-10-12 15:41:07 +08:00
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* Added support for the Armv9-A, Armv9.1-A and Armv9.2-A architectures.
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2021-09-22 21:56:30 +08:00
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* The compiler now recognises the "tune-cpu" function attribute to support
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the use of the -mtune frontend flag. This allows certain scheduling features
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and optimisations to be enabled independently of the architecture. If the
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"tune-cpu" attribute is absent it tunes according to the "target-cpu".
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2021-06-22 23:43:36 +08:00
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2014-03-18 18:16:15 +08:00
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Changes to the ARM Backend
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--------------------------
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2021-10-12 15:41:07 +08:00
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* Added support for the Armv9-A, Armv9.1-A and Armv9.2-A architectures.
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2021-12-10 19:52:09 +08:00
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* Added support for the Armv8.1-M PACBTI-M extension.
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2014-08-23 05:57:38 +08:00
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2014-07-23 20:59:26 +08:00
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Changes to the MIPS Target
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--------------------------
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2020-01-15 17:02:56 +08:00
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During this release ...
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2015-01-11 18:34:52 +08:00
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2021-05-13 21:25:04 +08:00
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Changes to the Hexagon Target
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-----------------------------
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* ...
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2014-07-23 20:59:26 +08:00
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2014-07-31 22:38:17 +08:00
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Changes to the PowerPC Target
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2014-07-31 23:20:30 +08:00
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-----------------------------
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2014-07-31 22:38:17 +08:00
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2020-01-15 17:02:56 +08:00
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During this release ...
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2015-12-21 10:37:23 +08:00
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Changes to the X86 Target
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2016-03-29 14:55:56 +08:00
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-------------------------
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2015-12-21 10:37:23 +08:00
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During this release ...
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2021-08-10 11:18:40 +08:00
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* Support for ``AVX512-FP16`` instructions has been added.
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2016-01-26 12:29:15 +08:00
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Changes to the AMDGPU Target
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-----------------------------
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2020-07-15 17:40:53 +08:00
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During this release ...
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2019-11-01 14:32:31 +08:00
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2016-11-18 06:26:09 +08:00
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Changes to the AVR Target
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-----------------------------
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During this release ...
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2019-01-15 02:20:30 +08:00
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Changes to the WebAssembly Target
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---------------------------------
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During this release ...
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2015-01-13 17:48:02 +08:00
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Changes to the OCaml bindings
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-----------------------------
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2017-06-30 09:17:45 +08:00
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Changes to the C API
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--------------------
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2019-12-03 11:59:54 +08:00
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2021-10-22 18:00:23 +08:00
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* ``LLVMSetInstDebugLocation`` has been deprecated in favor of the more general
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``LLVMAddMetadataToInst``.
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2019-12-03 11:59:54 +08:00
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Changes to the Go bindings
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--------------------------
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2017-06-30 15:09:08 +08:00
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2021-03-10 04:04:03 +08:00
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Changes to the FastISel infrastructure
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--------------------------------------
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* ...
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2021-03-10 04:04:03 +08:00
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Set ADDE/ADDC/SUBE/SUBC to expand by default
Summary:
They've been deprecated in favor of UADDO/ADDCARRY or USUBO/SUBCARRY for a while.
Target that uses these opcodes are changed in order to ensure their behavior doesn't change.
Reviewers: efriedma, craig.topper, dblaikie, bkramer
Subscribers: jholewinski, arsenm, jyknight, sdardis, nemanjai, nhaehnle, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, jordy.potman.lists, apazos, sabuasal, niosHD, jrtc27, zzheng, edward-jones, mgrang, atanasyan, llvm-commits
Differential Revision: https://reviews.llvm.org/D47422
llvm-svn: 333748
2018-06-01 21:21:33 +08:00
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Changes to the DAG infrastructure
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---------------------------------
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2018-06-05 02:36:22 +08:00
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2020-04-07 18:05:22 +08:00
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Changes to the Debug Info
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---------------------------------
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2020-07-15 17:40:53 +08:00
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During this release ...
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2020-04-07 18:05:22 +08:00
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2020-04-10 16:33:33 +08:00
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Changes to the LLVM tools
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---------------------------------
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2021-11-26 20:02:21 +08:00
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* llvm-cov: `-name-allowlist` is now accepted in addition to `-name-whitelist`.
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`-name-whitelist` is marked as deprecated and to be removed in future
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releases.
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2021-07-26 05:58:43 +08:00
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2019-07-06 01:58:30 +08:00
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Changes to LLDB
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2020-07-17 01:07:12 +08:00
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---------------------------------
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2019-07-06 01:58:30 +08:00
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2021-10-26 01:17:44 +08:00
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* A change in Clang's type printing has changed the way LLDB names array types
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(from ``int [N]`` to ``int[N]``) - LLDB pretty printer type name matching
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code may need to be updated to handle this.
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2022-01-24 19:16:34 +08:00
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* The following commands now ignore non-address bits (e.g. AArch64 pointer
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signatures) in address arguments. In addition, non-address bits will not
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be shown in the output of the commands.
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* ``memory find``
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* ``memory read``
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* ``memory tag read``
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* ``memory tag write``
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2021-10-26 01:17:44 +08:00
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2020-08-15 05:05:57 +08:00
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Changes to Sanitizers
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---------------------
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2021-07-28 12:51:07 +08:00
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External Open Source Projects Using LLVM 14
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===========================================
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2015-01-13 17:48:02 +08:00
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2016-07-19 02:02:23 +08:00
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* A project...
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2013-11-14 13:57:40 +08:00
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2012-12-10 07:14:26 +08:00
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Additional Information
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======================
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A wide variety of additional information is available on the `LLVM web page
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2018-09-10 16:50:31 +08:00
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<https://llvm.org/>`_, in particular in the `documentation
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<https://llvm.org/docs/>`_ section. The web page also contains versions of the
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API documentation which is up-to-date with the Git version of the source
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code. You can access versions of these documents specific to this release by
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going into the ``llvm/docs/`` directory in the LLVM tree.
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If you have any questions or comments about LLVM, please feel free to contact
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2018-09-10 16:50:31 +08:00
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us via the `mailing lists <https://llvm.org/docs/#mailing-lists>`_.
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