[llvm-branch-commits] [clang-tools-extra] 4c6e589 - ReleaseNotes: remove in-progress warnings, tidy up a bit
Hans Wennborg via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Fri Feb 28 08:15:20 PST 2020
Author: Hans Wennborg
Date: 2020-02-28T17:11:03+01:00
New Revision: 4c6e5899859651d5f0907fc4d5752e616c1598c3
URL: https://github.com/llvm/llvm-project/commit/4c6e5899859651d5f0907fc4d5752e616c1598c3
DIFF: https://github.com/llvm/llvm-project/commit/4c6e5899859651d5f0907fc4d5752e616c1598c3.diff
LOG: ReleaseNotes: remove in-progress warnings, tidy up a bit
Added:
Modified:
clang-tools-extra/docs/ReleaseNotes.rst
clang/docs/ReleaseNotes.rst
libcxx/docs/ReleaseNotes.rst
lld/docs/ReleaseNotes.rst
llvm/docs/ReleaseNotes.rst
Removed:
################################################################################
diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst
index 86ff28cfb0fd..10a48ea5f86a 100644
--- a/clang-tools-extra/docs/ReleaseNotes.rst
+++ b/clang-tools-extra/docs/ReleaseNotes.rst
@@ -1,6 +1,6 @@
-====================================================
-Extra Clang Tools 10.0.0 (In-Progress) Release Notes
-====================================================
+======================================
+Extra Clang Tools 10.0.0 Release Notes
+======================================
.. contents::
:local:
@@ -8,12 +8,6 @@ Extra Clang Tools 10.0.0 (In-Progress) Release Notes
Written by the `LLVM Team <https://llvm.org/>`_
-.. warning::
-
- These are in-progress notes for the upcoming Extra Clang Tools 10 release.
- Release notes for previous releases can be found on
- `the Download Page <https://releases.llvm.org/download.html>`_.
-
Introduction
============
@@ -27,11 +21,6 @@ For more information about Clang or LLVM, including information about
the latest release, please see the `Clang Web Site <https://clang.llvm.org>`_ or
the `LLVM Web Site <https://llvm.org>`_.
-Note that if you are reading this file from a Subversion checkout or the
-main Clang web page, this document applies to the *next* release, not
-the current one. To see the release notes for a specific release, please
-see the `releases page <https://llvm.org/releases/>`_.
-
What's New in Extra Clang Tools 10.0.0?
=======================================
@@ -39,10 +28,6 @@ Some of the major new features and improvements to Extra Clang Tools are listed
here. Generic improvements to Extra Clang Tools as a whole or to its underlying
infrastructure are described first, followed by tool-specific sections.
-Major New Features
-------------------
-
-...
Improvements to clangd
----------------------
@@ -59,10 +44,10 @@ Improvements to clangd
- clangd can be more easily used remotely or in a docker container.
- The `--path-mappings` flag translates between local and remote paths.
+ The ``--path-mappings`` flag translates between local and remote paths.
- Experimental support for renaming across files (behind the
- `--cross-file-rename` flag).
+ ``--cross-file-rename`` flag).
- Hover now exposes more information, including the type of symbols and the
value of constant expressions.
@@ -81,7 +66,7 @@ Improvements to clangd
- Semantic highlighting is more robust, highlights more types of tokens, and
as an extension provides information about inactive preprocessor regions.
-- Code completion results now include an extension field `score`.
+- Code completion results now include an extension field ``score``.
This allows clients to incorporate clangd quality signals when re-ranking code
completion after client-side fuzzy-matching.
@@ -97,16 +82,6 @@ Improvements to clang-doc
- :doc:`clang-doc <clang-doc>` now generates documentation in HTML format.
-Improvements to clang-query
----------------------------
-
-The improvements are...
-
-Improvements to clang-rename
-----------------------------
-
-The improvements are...
-
Improvements to clang-tidy
--------------------------
@@ -116,7 +91,7 @@ New checks
- New :doc:`bugprone-bad-signal-to-kill-thread
<clang-tidy/checks/bugprone-bad-signal-to-kill-thread>` check.
- Finds ``pthread_kill`` function calls when a thread is terminated by
+ Finds ``pthread_kill`` function calls when a thread is terminated by
raising ``SIGTERM`` signal.
- New :doc:`bugprone-dynamic-static-initializers
@@ -211,7 +186,7 @@ New checks
- New :doc:`readability-qualified-auto
<clang-tidy/checks/readability-qualified-auto>` check.
- Adds pointer and ``const`` qualifications to ``auto``-typed variables
+ Adds pointer and ``const`` qualifications to ``auto``-typed variables
that are deduced to pointers and ``const`` pointers.
- New :doc:`readability-redundant-access-specifiers
@@ -296,25 +271,6 @@ Renamed checks
- The 'objc-avoid-spinlock' check was renamed to :doc:`darwin-avoid-spinlock
<clang-tidy/checks/darwin-avoid-spinlock>`
-Improvements to include-fixer
------------------------------
-
-The improvements are...
-
-Improvements to clang-include-fixer
------------------------------------
-
-The improvements are...
-
-Improvements to modularize
---------------------------
-
-The improvements are...
-
-Improvements to pp-trace
-------------------------
-
-The improvements are...
Clang-tidy visual studio plugin
-------------------------------
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index b5415a033543..86668d9f77eb 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -1,6 +1,6 @@
-========================================
-Clang 10.0.0 (In-Progress) Release Notes
-========================================
+==========================
+Clang 10.0.0 Release Notes
+==========================
.. contents::
:local:
@@ -8,11 +8,6 @@ Clang 10.0.0 (In-Progress) Release Notes
Written by the `LLVM Team <https://llvm.org/>`_
-.. warning::
-
- These are in-progress notes for the upcoming Clang 10 release.
- Release notes for previous releases can be found on
- `the Download Page <https://releases.llvm.org/download.html>`_.
Introduction
============
@@ -30,10 +25,6 @@ For more information about Clang or LLVM, including information about the
latest release, please see the `Clang Web Site <https://clang.llvm.org>`_ or the
`LLVM Web Site <https://llvm.org>`_.
-Note that if you are reading this file from a Subversion checkout or the
-main Clang web page, this document applies to the *next* release, not
-the current one. To see the release notes for a specific release, please
-see the `releases page <https://llvm.org/releases/>`_.
What's New in Clang 10.0.0?
===========================
@@ -58,27 +49,33 @@ Improvements to Clang's diagnostics
- -Wtautological-overlap-compare will warn on negative numbers and non-int
types.
+
- -Wtautological-compare for self comparisons and
-Wtautological-overlap-compare will now look through member and array
access to determine if two operand expressions are the same.
+
- -Wtautological-bitwise-compare is a new warning group. This group has the
current warning which diagnoses the tautological comparison of a bitwise
operation and a constant. The group also has the new warning which diagnoses
when a bitwise-or with a non-negative value is converted to a bool, since
that bool will always be true.
+
- -Wbitwise-conditional-parentheses will warn on operator precedence issues
when mixing bitwise-and (&) and bitwise-or (|) operator with the
conditional operator (?:).
+
- -Wrange-loop-analysis got several improvements. It no longer warns about a
copy being made when the result is bound to an rvalue reference. It no longer
warns when an object of a small, trivially copyable type is copied. The
warning now offers fixits. Excluding -Wrange-loop-bind-reference it is now
part of -Wall. To reduce the number of false positives the diagnostic is
disabled in macros and template instantiations.
+
- -Wmisleading-indentation has been added. This warning is similar to the GCC
warning of the same name. It warns about statements that are indented as if
they were part of a if/else/for/while statement but are not semantically
part of that if/else/for/while.
+
- -Wbitwise-op-parentheses and -Wlogical-op-parentheses are disabled by default.
Non-comprehensive list of changes in this release
@@ -98,7 +95,7 @@ Non-comprehensive list of changes in this release
learned to sanitize pre/post increment/decrement of types with bit width
smaller than ``int``.
-- For X86 target, -march=skylake-avx512, -march=icelake-client,
+* For X86 target, -march=skylake-avx512, -march=icelake-client,
-march=icelake-server, -march=cascadelake, -march=cooperlake will default to
not using 512-bit zmm registers in vectorized code unless 512-bit intrinsics
are used in the source code. 512-bit operations are known to cause the CPUs
@@ -145,12 +142,12 @@ New Compiler Flags
please let us know if you encounter a situation where you need to specify this
flag for correct program behavior.
-- The `-ffixed-xX` flags now work on RISC-V. These reserve the corresponding
+- The ``-ffixed-xX`` flags now work on RISC-V. These reserve the corresponding
general-purpose registers.
-- RISC-V has added `-mcmodel=medany` and `-mcmodel=medlow` as aliases for
- `-mcmodel=small` and `-mcmodel=medium` respectively. Preprocessor definitions
- for `__riscv_cmodel_medlow` and `__riscv_cmodel_medany` have been corrected.
+- RISC-V has added ``-mcmodel=medany`` and ``-mcmodel=medlow`` as aliases for
+ ``-mcmodel=small`` and ``-mcmodel=medium`` respectively. Preprocessor definitions
+ for ``__riscv_cmodel_medlow`` and ``__riscv_cmodel_medany`` have been corrected.
- ``-fmacro-prefix-map=OLD=NEW`` substitutes directory prefix ``OLD`` for
``NEW`` in predefined preprocessor macros such as ``__FILE__``. This helps
@@ -173,12 +170,12 @@ future versions of Clang.
- -mmpx used to enable the __MPX__ preprocessor define for the Intel MPX
instructions. There were no MPX intrinsics.
+
- -mno-mpx used to disable -mmpx and is the default behavior.
+
- -fconcepts-ts previously used to enable experimental concepts support. Use
-std=c++2a instead to enable Concepts support.
-- ...
-
Modified Compiler Flags
-----------------------
@@ -212,11 +209,6 @@ Modified Compiler Flags
- RISC-V now supports multilibs in baremetal environments. This support does not
extend to supporting multilib aliases.
-New Pragmas in Clang
---------------------
-
-- ...
-
Attribute Changes in Clang
--------------------------
@@ -247,16 +239,6 @@ Windows Support
functions using the new ``__declspec(guard(nocf))`` modifier.
-C Language Changes in Clang
----------------------------
-
-- ...
-
-C11 Feature Support
-^^^^^^^^^^^^^^^^^^^
-
-...
-
C++ Language Changes in Clang
-----------------------------
@@ -265,11 +247,6 @@ C++ Language Changes in Clang
how it behaved in previous Clang versions, a warning is emitted for this
combination.
-C++1z Feature Support
-^^^^^^^^^^^^^^^^^^^^^
-
-...
-
Objective-C Language Changes in Clang
-------------------------------------
@@ -390,10 +367,6 @@ Other improvements:
- Added basic analysis for use of the uninitialized variables in clauses.
- Bug fixes.
-CUDA Support in Clang
----------------------
-
-- ...
Internal API Changes
--------------------
@@ -429,12 +402,6 @@ release of Clang. Users of the build system should adjust accordingly.
statically linking clang's components. This option will reduce the size of
binary distributions at the expense of compiler performance.
-- ...
-
-AST Matchers
-------------
-
-- ...
clang-format
------------
@@ -578,25 +545,6 @@ Undefined Behavior Sanitizer (UBSan)
return getelementpointer_inbounds(base, offset);
}
-Core Analysis Improvements
-==========================
-
-- ...
-
-New Issues Found
-================
-
-- ...
-
-Python Binding Changes
-----------------------
-
-The following methods have been added:
-
-- ...
-
-Significant Known Problems
-==========================
Additional Information
======================
diff --git a/libcxx/docs/ReleaseNotes.rst b/libcxx/docs/ReleaseNotes.rst
index 438e36beec4f..f57c915a4455 100644
--- a/libcxx/docs/ReleaseNotes.rst
+++ b/libcxx/docs/ReleaseNotes.rst
@@ -1,6 +1,6 @@
-=========================================
-Libc++ 10.0.0 (In-Progress) Release Notes
-=========================================
+===========================
+Libc++ 10.0.0 Release Notes
+===========================
.. contents::
:local:
@@ -8,12 +8,6 @@ Libc++ 10.0.0 (In-Progress) Release Notes
Written by the `Libc++ Team <https://libcxx.llvm.org>`_
-.. warning::
-
- These are in-progress notes for the upcoming libc++ 10 release.
- Release notes for previous releases can be found on
- `the Download Page <https://releases.llvm.org/download.html>`_.
-
Introduction
============
@@ -27,11 +21,6 @@ be downloaded from the `LLVM releases web site <https://llvm.org/releases/>`_.
For more information about libc++, please see the `Libc++ Web Site
<https://libcxx.llvm.org>`_ or the `LLVM Web Site <https://llvm.org>`_.
-Note that if you are reading this file from a Subversion checkout or the
-main Libc++ web page, this document applies to the *next* release, not
-the current one. To see the release notes for a specific release, please
-see the `releases page <https://llvm.org/releases/>`_.
-
What's New in Libc++ 10.0.0?
============================
@@ -39,10 +28,3 @@ Fixes
-----
- Fixed use of non-default locales on Windows
-
-New Features
-------------
-
-API Changes
------------
-- ...
diff --git a/lld/docs/ReleaseNotes.rst b/lld/docs/ReleaseNotes.rst
index 7d8599cf1734..8513a08e90e7 100644
--- a/lld/docs/ReleaseNotes.rst
+++ b/lld/docs/ReleaseNotes.rst
@@ -5,10 +5,6 @@ lld 10.0.0 Release Notes
.. contents::
:local:
-.. warning::
- These are in-progress notes for the upcoming LLVM 10.0.0 release.
- Release notes for previous releases can be found on
- `the Download Page <https://releases.llvm.org/download.html>`_.
Introduction
============
@@ -33,7 +29,7 @@ ELF Improvements
* New ``elf32btsmipn32_fbsd`` and ``elf32ltsmipn32_fbsd`` emulations
are supported.
-* Relax MIPS ``jalr``and ``jr`` instructions marked by the ``R_MIPS_JALR``
+* Relax MIPS ``jalr`` and ``jr`` instructions marked by the ``R_MIPS_JALR``
relocation.
* For certain "undefined symbol" errors, a definition with a close spelling will be suggested.
(`D67039 <https://reviews.llvm.org/D67039>`_)
@@ -90,10 +86,6 @@ Breaking changes
could cause subtle bugs.
(`D70468 <https://reviews.llvm.org/D70468>`_)
-COFF Improvements
------------------
-
-* ...
MinGW Improvements
------------------
@@ -126,10 +118,6 @@ MinGW Improvements
(which can happen for the default-null symbol for weak symbols)
(`1737cc750c46 <https://reviews.llvm.org/rG1737cc750c46>`)
-MachO Improvements
-------------------
-
-* Item 1.
WebAssembly Improvements
------------------------
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 7ca74e37858e..07b37fb6c195 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -5,12 +5,6 @@ LLVM 10.0.0 Release Notes
.. contents::
:local:
-.. warning::
- These are in-progress notes for the upcoming LLVM 10 release.
- Release notes for previous releases can be found on
- `the Download Page <https://releases.llvm.org/download.html>`_.
-
-
Introduction
============
@@ -26,21 +20,11 @@ have questions or comments, the `LLVM Developer's Mailing List
<https://lists.llvm.org/mailman/listinfo/llvm-dev>`_ is a good place to send
them.
-Note that if you are reading this file from a Subversion checkout or the main
-LLVM web page, this document applies to the *next* release, not the current
-one. To see the release notes for a specific release, please see the `releases
-page <https://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 ISD::FP_ROUND_INREG opcode and related code was removed from SelectionDAG.
+
* Enabled MemorySSA as a loop dependency. Since
`r370957 <https://reviews.llvm.org/rL370957>`_
(`D58311 <https://reviews.llvm.org/D58311>`_ ``[MemorySSA & LoopPassManager]
@@ -55,22 +39,13 @@ Non-comprehensive list of changes in this release
AliasSetTracker usage with MemorySSA without any performance penalties.
The fact that MemorySSA is now preserved by and available in a series of loop
passes, also opens up opportunities for its use in those respective passes.
+
* The BasicBlockPass, BBPassManager and all their uses were deleted in
`this revision <https://reviews.llvm.org/rG9f0ff0b2634bab6a5be8dace005c9eb24d386dd1>`_.
* The LLVM_BUILD_LLVM_DYLIB and LLVM_LINK_LLVM_DYLIB CMake options are no longer
available on Windows.
-.. 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).
-
- Special New Feature
- -------------------
-
- Makes programs 10x faster by doing Special New Thing.
-
* As per :ref:`LLVM Language Reference Manual <i_getelementptr>`,
``getelementptr inbounds`` can not change the null status of a pointer,
meaning it can not produce non-null pointer given null base pointer, and
@@ -84,7 +59,6 @@ Non-comprehensive list of changes in this release
Undefined Behaviour Sanitizer ``-fsanitize=pointer-overflow`` check
will now catch such cases.
-
* Windows Control Flow Guard: the ``-cfguard`` option now emits CFG checks on
indirect function calls. The previous behavior is still available with the
``-cfguard-nochecks`` option. Note that this feature should always be used
@@ -123,29 +97,29 @@ Changes to the LLVM IR
that correctly converted 80-90% of Clang tests. Some manual work will almost
certainly still be needed.
-* A new `freeze` instruction is added. The `freeze` instruction is used to stop
+* A new ``freeze`` instruction is added. The ``freeze`` instruction is used to stop
IR-level propagation of undef and poison values. Currently its support is
preliminary; a freeze-equivalent operation for SelDag/MIR needs to be added.
-Changes to building LLVM
-------------------------
-
-...
Changes to the AArch64 Backend
------------------------------
-- Added support for Cortex-A65, Cortex-A65AE, Neoverse E1 and Neoverse N1 cores.
-- With a few more bugs fixed in the LLVM 10 release, clang-cl can now target windows-on-Arm well, demonstrated by building complex pieces of software such as Chromium and the Electron framework.
-- Support for -fpatchable-function-entry was added.
+* Added support for Cortex-A65, Cortex-A65AE, Neoverse E1 and Neoverse N1 cores.
+
+* With a few more bugs fixed in the LLVM 10 release, clang-cl can now target windows-on-Arm well, demonstrated by building complex pieces of software such as Chromium and the Electron framework.
+
+* Support for -fpatchable-function-entry was added.
Changes to the ARM Backend
--------------------------
-- Optimized Armv8.1-M code generation, including generating Low Overhead Loops.
-- Added auto-vectorization for the Armv8.1-M MVE vector extension.
-- Support was added for inline asm constraints s,j,x,N,O.
+* Optimized Armv8.1-M code generation, including generating Low Overhead Loops.
+
+* Added auto-vectorization for the Armv8.1-M MVE vector extension.
+
+* Support was added for inline asm constraints s,j,x,N,O.
Changes to the MIPS Target
@@ -153,18 +127,25 @@ Changes to the MIPS Target
* Improved support for ``octeon`` and added support for ``octeon+``
MIPS-family CPU.
+
* ``min``, ``max``, ``umin``, ``umax`` atomics now supported on MIPS targets.
+
* Now PC-relative relocations are generated for ``.eh_frame`` sections when
possible. That allows to link MIPS binaries without having to pass the
``-Wl,-z,notext`` option.
+
* Fix evaluating J-format branch (``j``, ``jal``, ...) targets when the
instruction is not in the first 256 MB region.
+
* Fixed ``jal``, ``sc``, ``scs``, ``ll``, ``lld``, ``la``, ``lw``, ``sw``
instructions expanding. Now they accept more types of expression as arguments,
correctly handle load/store for ``XGOT`` model, expand using less instructions
or registers.
+
* Initial MIPS support has been added to ``llvm-exegesis``.
+
* Generates ``_mcount`` calls using proper MIPS ABI.
+
* Improved support of GlobalISel instruction selection framework. This feature
is still in experimental state for MIPS targets though.
@@ -174,7 +155,9 @@ Changes to the PowerPC Target
Optimization:
* Improved register pressure estimates in the loop vectorizer based on type
+
* Improved the PowerPC cost model for the vectorizer
+
* Enabled vectorization of math routines on PowerPC using MASSV (Mathematical Acceleration SubSystem) library
compiler-rt:
@@ -184,14 +167,19 @@ compiler-rt:
Codegen:
* Optimized memory access instructions in loops (pertaining to update-form instructions and address computation)
+
* Added options to disable hoisting instructions to hotter blocks based on statically or profile-based block hotness estimates
+
* Code generation improvements (particularly with floating point and vector code as well as handling condition registers)
+
* Various infrastructural improvements, code refactoring, and bug fixes
+
* Optimized handling of control flow based on multiple comparison of same values
Tools:
* llvm-readobj supports displaying file header, section headers, symbol table and relocation entries for XCOFF object files
+
* llvm-objdump supports disassembling physical sections for XCOFF object files
@@ -200,10 +188,14 @@ Changes to the SystemZ Target
* Added support for the ``-march=z15`` and ``-mtune=z15`` command line options
(as aliases to the existing ``-march=arch13`` and ``-mtune=arch13`` options).
+
* Added support for the ``-march=native`` command line option.
+
* Added support for the ``-mfentry``, ``-mnop-mcount``, and ``-mrecord-mcount``
command line options.
+
* Added support for the GHC calling convention.
+
* Miscellaneous codegen enhancements, in particular to enable better
reuse of condition code values and improved use of conditional
move instructions.
@@ -217,38 +209,39 @@ Changes to the X86 Target
now stored in the lower bits of an xmm register and the upper bits are
undefined. Previously the elements were spread apart with undefined bits in
between them.
+
* v32i8 and v64i8 vectors with AVX512F enabled, but AVX512BW disabled will now
be passed in ZMM registers for calls and returns. Previously they were passed
in two YMM registers. Old behavior can be enabled by passing
-x86-enable-old-knl-abi
+
* -mprefer-vector-width=256 is now the default behavior skylake-avx512 and later
Intel CPUs. This tries to limit the use of 512-bit registers which can cause a
decrease in CPU frequency on these CPUs. This can be re-enabled by passing
-mprefer-vector-width=512 to clang or passing -mattr=-prefer-256-bit to llc.
+
* Deprecated the mpx feature flag for the Intel MPX instructions. There were no
intrinsics for this feature. This change only this effects the results
returned by getHostCPUFeatures on CPUs that implement the MPX instructions.
+
* The feature flag fast-partial-ymm-or-zmm-write which previously disabled
vzeroupper insertion has been removed. It has been replaced with a vzeroupper
feature flag which has the opposite polarity. So -vzeroupper has the same
effect as +fast-partial-ymm-or-zmm-write.
-Changes to the AMDGPU Target
------------------------------
-
-Changes to the AVR Target
------------------------------
-
- During this release ...
Changes to the WebAssembly Target
---------------------------------
* __attribute__((used)) no longer implies that a symbol is exported, for
consistency with other targets.
+
* Multivalue function signatures are now supported in WebAssembly object files
-* The new `atomic.fence` instruction is now supported
+
+* The new ``atomic.fence`` instruction is now supported
+
* Thread-Local Storage (TLS) is now supported.
+
* SIMD support is significantly expanded.
Changes to the Windows Target
@@ -260,69 +253,94 @@ Changes to the RISC-V Target
----------------------------
New Features:
+
* The Machine Outliner is now supported, but not enabled by default.
+
* Shrink-wrapping is now supported.
+
* The Machine Scheduler has been enabled and scheduler descriptions for the
Rocket micro-architecture have been added, covering both 32- and 64-bit Rocket
cores.
+
* This release lays the groundwork for enabling LTO in a future LLVM release.
- In particular, LLVM now uses a new `target-abi` module metadata item to
+ In particular, LLVM now uses a new ``target-abi`` module metadata item to
represent the chosen RISC-V psABI variant. Frontends should add this module
flag to prevent ABI lowering problems when LTO is enabled in a future LLVM
release.
+
* Support has been added for assembling RVC HINT instructions.
+
* Added code lowering for half-precision floats.
-* The `fscsr` and `frcsr` (`fssr`, `frsr`) obsolete aliases have been added to
+
+* The ``fscsr`` and ``frcsr`` (``fssr``, ``frsr``) obsolete aliases have been added to
the assembler for use in legacy code.
+
* The stack can now be realigned even when there are variable-sized objects in
the same frame.
+
* fastcc is now supported. This is a more efficient, unstandardised, calling
convention for calls to private leaf functions in the same IR module.
-* llvm-objdump now supports `-M no-aliases` and `-M numeric` for altering the
+
+* llvm-objdump now supports ``-M no-aliases`` and ``-M numeric`` for altering the
dumped assembly. These match the behaviour of GNU objdump, respectively
disabling instruction aliases and printing the numeric register names rather
than the ABI register names.
Improvements:
* Trap and Debugtrap now lower to RISC-V-specific trap instructions.
+
* LLVM IR Inline assembly now supports using ABI register names and using
floating point registers in constraints.
+
* Stack Pointer adjustments have been changed to better match RISC-V's immediates.
-* `ra` (`x1`) can now be used as a callee-saved register.
+
+* ``ra`` (``x1``) can now be used as a callee-saved register.
+
* The assembler now suggests spelling corrections for unknown assembly
mnemonics.
+
* Stack offsets of greater than 32-bits are now accepted on RV64.
+
* Variadic functions can now be tail-call optimised, as long as they do not use
stack memory for passing arguments.
+
* Code generation has been changed for 32-bit arithmetic operations on RV64 to
reduce sign-extensions.
Bug Fixes:
+
* There was an issue with register preservation after calls in interrupt
handlers, where some registers were marked as preserved even though they were
not being preserved by the call. This has been corrected, and now only
callee-saved registers are live over a function call in an interrupt handler
(just like calls in regular functions).
+
* Atomic instructions now only accept GPRs (plus an offset) in memory operands.
+
* Fixed some issues with evaluation of relocations and fixups.
+
* The error messages around missing RISC-V extensions in the assembler have been
improved.
+
* The error messages around unsupported relocations have been improved.
+
* Non-PIC code no longer forces Local Exec TLS.
+
* There have been some small changes to the code generation for atomic
operations.
+
* RISC-V no longer emits incorrect CFI directives in function prologs and
epilogs.
+
* RV64 no longer clears the upper bits when returning complex types from
libcalls using the LP64 psABI.
Compiler-RT:
+
* RISC-V (both 64-bit and 32-bit) is now supported by compiler-rt, allowing
crtbegin and crtend to be built.
-* The Sanitizers now support 64-bit RISC-V on linux.
-Changes to the OCaml bindings
------------------------------
+* The Sanitizers now support 64-bit RISC-V on linux.
@@ -340,8 +358,6 @@ Changes to the Go bindings
to Debug information in LLVM IR.
-Changes to the DAG infrastructure
----------------------------------
Changes to LLDB
===============
@@ -354,7 +370,7 @@ Changes to LLDB
* Tab completions for command options now also provide a description for each option.
-* Fixed that printing structs/classes with the `expression` command sometimes did not
+* Fixed that printing structs/classes with the ``expression`` command sometimes did not
print the members/contents of the class.
* Improved support for using classes with bit-field members in the expression evaluator.
More information about the llvm-branch-commits
mailing list