In patch #82461 the sprintf tests were made to use UINTMAX_WIDTH which
isn't defined on all systems. This patch changes it to
sizeof(uintmax_t)*CHAR_BIT which is more portable.

fixes #86999

Resolves #81685. This adds support for wN and wfN length modifiers in
fprintf.

Only attempt to initialize the ring buffer when tracking is enabled.

Updated unit tests, and added a few new unit tests to verify the
RingBuffer is not initialized by default.

Verified that the two maps associated with the RingBuffer are not
created in processes by default.

This is now allowed in C23; continue to diagnose it in earlier language
modes as before, but now as a C23 extension rather than a GNU extension.

This fixes #83658.

This patch adds similar handling of div-by-pow2 as in `SelectionDAG`.

Rename to VPseudoBinaryNoMaskTU_Zvk. This more consistent with the naming
of the class it instantiates and the _Zvk suffix is used elsewhere
in RISCVInstrInfoZvk.td.

This adds the bazel equivalent of the `llvm` binary produced by
`LLVM_TOOL_LLVM_DRIVER_BUILD` in cmake. For the initial commit, this
only includes `llvm-ar`, `llvm-nm`, and `llvm-size`. The rest are
trivial to add in a followup commit, following the same pattern as here.

By default it will include everything that supports the llvm-driver
model, but it can be reduced to only build a subset, e.g. this will
build only nm and size:

```
$ bazel build \
    --@llvm-project//llvm:driver-tools=llvm-nm,llvm-size \
    @llvm-project//llvm:llvm
```

InstallAPI does not directly look at object files in the dylib for
verification. To help diagnose violations where a declaration is
undiscovered in headers, parse the dSYM and look up the source location
for symbols. Emitting out the source location with a diagnostic is
enough for some IDE's (e.g. Xcode) to have them map back to editable
source files.

The most recent declaration of a template as a friend can introduce a
different template parameter depth compared to what we anticipate from a
CTAD guide.

Fixes https://github.com/llvm/llvm-project/issues/86769

Use inline register class syntax for select test file.

This was preventing us from folding away the vmerge into its mask.

Remove the canonicalization of `trunc` to `i1` according to the
suggestion of
https://github.com/llvm/llvm-project/pull/83829#issuecomment-1986801166

https://github.com/llvm/llvm-project/blob/a84e66a92d7b97f68aa3ae7d2c5839f3fb0d291d/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp#L737-L745

Alive2: https://alive2.llvm.org/ce/z/cacYVA

Reimplement bitfield access unit computation for SysV ABIs. Considers
expense of unaligned and non-power-of-2 accesses.

Promote ARM & AArch64's HasUnaligned to TargetInfo and set for all
targets.

Verify bitfield access units.

This upstreams https://github.com/apple/llvm-project/pull/7930.

This adds a test to verify that we can apply attributes to C++ class
templates using API Notes. Doing the same for function templates is not
currently possible and requires more work.

https://github.com/llvm/llvm-project/pull/85592

Summary:
This patch removes most of the special handling from the
`PluginAdaptorTy` in preparation for changing this to be the
`GenericPluginTy`. Doing this requires that the OpenMP specific handling
of stuff like device offsets be contained within the OpenMP plugin
manager. Generally this was uninvasive expect for the change to tracking
the offset and size of the used devices. The eaiest way I could think to
do this was to use some maps, which double as indicators for which
plugins have devices active. This should not affect the logic.

DAGCombiner (or InstCombine) will convert an add to an or if the bits
are disjoint, which can prevent what was originally an (add {s,z}ext,
{s,z}ext) from being selected as a vwadd.

This teaches combineBinOp_VLToVWBinOp_VL to recover it by treating it as
an add.

This reduces the include time of <format> from 691ms to 556ms.

Fix the calls to `PrintedDeclCXX98Matches` to take the lambda function
as the last argument.

This reverts commit c64a328c.
This broke Arm32 bit build on various LLVM buildbots.
For example:
https://lab.llvm.org/buildbot/#/builders/17/builds/51129

Introduce `Decl::isFromExplicitGlobalModule` to replace the
`D->getOwningModule() && D->getOwningModule()->isExplicitGlobalModule()`
pattern to save some typings.

Found with -Wundefined-func-template.

apx-spec: https://cdrdv2.intel.com/v1/dl/getContent/784266
apx-syntax-recommendation:
https://cdrdv2.intel.com/v1/dl/getContent/817241

Revert "Reapply "[clang][nullability] allow _Nonnull etc on nullable class types (#82705)"" (#87041)

This reverts commit bbbcc1d9.

This change is causing the following build bots to fail due to a missing
header file:
- https://lab.llvm.org/buildbot/#/builders/188/builds/43765
- https://lab.llvm.org/buildbot/#/builders/176/builds/9428
- https://lab.llvm.org/buildbot/#/builders/187/builds/14696
- https://lab.llvm.org/buildbot/#/builders/186/builds/15551
- https://lab.llvm.org/buildbot/#/builders/182/builds/9413
- https://lab.llvm.org/buildbot/#/builders/245/builds/22507
- https://lab.llvm.org/buildbot/#/builders/258/builds/16026
- https://lab.llvm.org/buildbot/#/builders/249/builds/17221
- https://lab.llvm.org/buildbot/#/builders/38/builds/18566
- https://lab.llvm.org/buildbot/#/builders/214/builds/11735
- https://lab.llvm.org/buildbot/#/builders/231/builds/21947
- https://lab.llvm.org/buildbot/#/builders/230/builds/26675
- https://lab.llvm.org/buildbot/#/builders/57/builds/33922
- https://lab.llvm.org/buildbot/#/builders/124/builds/10311
- https://lab.llvm.org/buildbot/#/builders/109/builds/86173
- https://lab.llvm.org/buildbot/#/builders/280/builds/1043
- https://lab.llvm.org/buildbot/#/builders/283/builds/440
- https://lab.llvm.org/buildbot/#/builders/247/builds/16034
- https://lab.llvm.org/buildbot/#/builders/139/builds/62423
- https://lab.llvm.org/buildbot/#/builders/216/builds/36718
- https://lab.llvm.org/buildbot/#/builders/259/builds/2039
- https://lab.llvm.org/buildbot/#/builders/36/builds/44091
- https://lab.llvm.org/buildbot/#/builders/272/builds/12629
- https://lab.llvm.org/buildbot/#/builders/271/builds/6020
- https://lab.llvm.org/buildbot/#/builders/236/builds/10319

We can avoid libcalls.

Fixes #86205

This is the second attempt of 32fcfcdc,
which had to be reverted.

This should be good to go now, after a number of cleanups to not expose
headers from multiple targets:

- 6e58efac
- f1dff836
- 89ef3130
- eb70b485
- 83e5a123
- fce046ca

by default

For reduced BMI, it is meaningless to record the local declarations in
functions if not required explicitly during the process of writing the
function bodies.

It wastes time for reduced BMI and may be problematic if we want to
avoid transiting unnecessary changes.

This patch adds the nuw (no unsigned wrap) and nsw (no signed wrap)
poison-generating flags to the trunc instruction.

Discourse thread:
https://discourse.llvm.org/t/rfc-add-nowrap-flags-to-trunc/77453

This adds the ability to create a Scalar from an APFloat, and to create
an APFloat from an APSInt or another APFloat.