[lld] c3737a6 - [docs] Add release notes for news in 16.x done by me, or otherwise relating to MinGW targets
Martin Storsjö via llvm-commits
llvm-commits at lists.llvm.org
Mon Jan 23 12:13:18 PST 2023
Author: Martin Storsjö
Date: 2023-01-23T22:12:32+02:00
New Revision: c3737a6522306ba4504234afe35be8b0a4b7b48d
URL: https://github.com/llvm/llvm-project/commit/c3737a6522306ba4504234afe35be8b0a4b7b48d
DIFF: https://github.com/llvm/llvm-project/commit/c3737a6522306ba4504234afe35be8b0a4b7b48d.diff
LOG: [docs] Add release notes for news in 16.x done by me, or otherwise relating to MinGW targets
Differential Revision: https://reviews.llvm.org/D142346
Added:
Modified:
clang/docs/ReleaseNotes.rst
lld/docs/ReleaseNotes.rst
llvm/docs/ReleaseNotes.rst
openmp/docs/ReleaseNotes.rst
Removed:
################################################################################
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 080a400726057..f7a68a64df325 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -578,6 +578,11 @@ Modified Compiler Flags
- Clang now permits specifying ``--config=`` multiple times, to load multiple
configuration files.
+- The option ``-rtlib=platform`` can now be used for all targets to override
+ a
diff erent option value (either one set earlier on the command line, or a
+ built-in hardcoded default). (Previously the MSVC and Darwin targets didn't
+ allow this parameter combination.)
+
Removed Compiler Flags
-------------------------
- Clang now no longer supports ``-cc1 -fconcepts-ts``. This flag has been deprecated
@@ -632,6 +637,16 @@ Windows Support
- Switched from SHA1 to BLAKE3 for PDB type hashing / ``-gcodeview-ghash``
+- Fixed code generation with emulated TLS, when the emulated TLS is enabled
+ by default (with downstream patches; no upstream configurations default
+ to this configuration, but some mingw downstreams change the default
+ in this way).
+
+- Improved detection of MinGW cross sysroots for finding sysroots provided
+ by Linux distributions such as Fedora. Also improved such setups by
+ avoiding to include ``/usr/include`` among the include paths when cross
+ compiling with a cross sysroot based in ``/usr``.
+
AIX Support
-----------
* When using ``-shared``, the clang driver now invokes llvm-nm to create an
diff --git a/lld/docs/ReleaseNotes.rst b/lld/docs/ReleaseNotes.rst
index c350aa9e714c5..00aaeff96d78e 100644
--- a/lld/docs/ReleaseNotes.rst
+++ b/lld/docs/ReleaseNotes.rst
@@ -57,6 +57,8 @@ COFF Improvements
* Improvements to the PCH.OBJ files handling. Now LLD behaves the same as MSVC
link.exe when merging PCH.OBJ files that don't have the same signature.
(`D136762 <https://reviews.llvm.org/D136762>`_)
+* Changed the OrdinalBase for DLLs from 0 to 1, matching the output from
+ both MS link.exe and GNU ld. (`D134140 <https://reviews.llvm.org/D134140>`_)
MinGW Improvements
------------------
@@ -71,6 +73,14 @@ MinGW Improvements
the load config directory and be filled with the required symbols.
(`D132808 <https://reviews.llvm.org/D132808>`_)
+* Pick up libraries named ``<name>.lib`` when linked with ``-l<name>``, even
+ if ``-static`` has been specified. This fixes conformance to what
+ GNU ld does. (`D135651 <https://reviews.llvm.org/D135651>`_)
+
+* Unwinding in Rust code on i386 in MinGW builds has been fixed, by avoiding
+ to leave out the ``rust_eh_personality`` symbol.
+ (`D136879 <https://reviews.llvm.org/D136879>`_)
+
MachO Improvements
------------------
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 53c947dc7cef1..671e7cce9c216 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -222,6 +222,25 @@ Changes to the Windows Target
an affinity mask issue.
(`D138747 <https://reviews.llvm.org/D138747>`_)
+* When building LLVM and related tools for Windows with Clang in MinGW mode,
+ hidden symbol visiblity is now used to reduce the number of exports in
+ builds with dylibs (``LLVM_BUILD_LLVM_DYLIB`` or ``LLVM_LINK_LLVM_DYLIB``),
+ making such builds more manageable without running into the limit of
+ number of exported symbols.
+
+* AArch64 SEH unwind info generation bugs have been fixed; there were minor
+ cases of mismatches between the generated unwind info and actual
+ prologues/epilogues earlier in some cases.
+
+* AArch64 SEH unwind info is now generated correctly for the AArch64
+ security features BTI (Branch Target Identification) and PAC (Pointer
+ Authentication Code). In particular, using PAC with older versions of LLVM
+ would generate code that would fail to unwind at runtime, if the host
+ actually would use the pointer authentication feature.
+
+* Fixed stack alignment on Windows on AArch64, for stack frames with a
+ large enough allocation that requires stack probing.
+
Changes to the X86 Backend
--------------------------
@@ -308,11 +327,20 @@ Changes to the LLVM tools
* ``llvm-objdump`` now uses ``--print-imm-hex`` by default, which brings its
default behavior closer in line with ``objdump``.
+* ``llvm-objcopy`` no longer writes corrupt addresses to empty sections if
+ the input file had a nonzero address to an empty section.
+
Changes to LLDB
---------------------------------
* Initial support for debugging Linux LoongArch 64-bit binaries.
+* Improvements in COFF symbol handling; previously a DLL (without any other
+ debug info) would only use the DLL's exported symbols, while it now also
+ uses the full list of internal symbols, if available.
+
+* Avoiding duplicate DLLs in the runtime list of loaded modules on Windows.
+
Changes to Sanitizers
---------------------
@@ -329,6 +357,12 @@ Other Changes
would now be ``UNSUPPORTED: target=arm{{.*}}`` and ``XFAIL: windows``
would now be ``XFAIL: target={{.*}}-windows{{.*}}``.
+* When cross compiling LLVM (or building with ``LLVM_OPTIMIZED_TABLEGEN``),
+ it is now possible to point the build to prebuilt versions of all the
+ host tools with one CMake variable, ``LLVM_NATIVE_TOOL_DIR``, instead of
+ having to point out each individual tool with variables such as
+ ``LLVM_TABLEGEN``, ``CLANG_TABLEGEN``, ``LLDB_TABLEGEN`` etc.
+
External Open Source Projects Using LLVM 15
===========================================
diff --git a/openmp/docs/ReleaseNotes.rst b/openmp/docs/ReleaseNotes.rst
index 785332f11858f..7a626a0c46965 100644
--- a/openmp/docs/ReleaseNotes.rst
+++ b/openmp/docs/ReleaseNotes.rst
@@ -19,3 +19,8 @@ from the `LLVM releases web site <https://llvm.org/releases/>`_.
Non-comprehensive list of changes in this release
=================================================
+
+* Support for building the OpenMP runtime for Windows on AArch64 and ARM
+ with MinGW based toolchains.
+
+* Made the OpenMP runtime tests run successfully on Windows.
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