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[mlir][nvgpu] Move memref memspace attributes conversion to single place (#172156)

Also, some fixes for AMDGPU part for better naming.

[libc++] Use native wait in std::barrier instead of sleep loop (#171041)

For some reason, the current `std::barrier`'s wait implementation polls
the underlying atomic in a loop with sleeps instead of using the native
wait.

This change should also indirectly fix the performance issue of
`std::barrier` described in
https://github.com/llvm/llvm-project/issues/123855.

Fixes #123855

[libc++][flat_multiset] Applied `[[nodiscard]]` (#169984)

`[[nodiscard]]` should be applied to functions where discarding the
return value is most likely a correctness issue.

-  https://libcxx.llvm.org/CodingGuidelines.htm
-  https://wg21.link/flat.multiset

[libc++][flat_multimap] Applied `[[nodiscard]]` (#169986)

`[[nodiscard]]` should be applied to functions where discarding the
return value is most likely a correctness issue.

- https://libcxx.llvm.org/CodingGuidelines.htm
- https://wg21.link/flat.multimap

[clangd] Add option to fuzzy-match macros in code-complete (#169880)

Adds `MacroFilterPolicy` 

```yaml
Completion:
  MacroFilter: ExactPrefix (default), FuzzyMatch
```

Fixes clangd/clangd#1480

[clangd] Add a (currently hidden) --strong-workspace-mode flag (#172160)

Its current effect is to use the `rootUri` provided by the client as the
working directory for fallback commands.

Future effects will include other behaviors appropriate for cases
where clangd is being run in the context of editing a single
workspace, such as using the `compile_commands.json` file in the
workspace root for all opened files.

The flag is hidden until other behaviors are implemented and they
constitute a cohesive "mode" for users.

Original PR in #155905, which was reverted due to a UBSan failure
that is fixed in this version.

[ARM][AArch64] Replace ".f16(bfloat" with ".bf16(bfloat" in intrinsics. NFC

It looks like these were copied from fp16 tests, and forgot to update the
intrinsic types. Also remove some old definitions that are no longer required.

[clang-tidy] Add `IgnoreMacro` option to `bugprone-chained-comparison` (#171975)

Closes #171130

---------

Co-authored-by: Baranov Victor <bar.victor.2002 at gmail.com>

Revert "[X86][APX] Add pattern for zext(X86setcc ..) -> SETZUCCr (#170806)" (#172192)

This reverts commit 2612dc9b5faeaeb180c5a5e0c282642faef8891b but keeps
`Predicates = [HasNDD]` removed.

There are two issues identified related to the change. One is
INSERT_SUBREG cannot guarantee source and dest to be the same register.
It mostly happens on O0. The other one is zero_extend is not a chain
node, as a result, we will lose the chain for SETZUCCr.

[IR] Optimize PHINode::removeIncomingValueIf() using two-pointer (#171961)

[LoopRotate] Simplify PHINode::removeIncomingValue usage (NFC) (#171958)

[ARM][MVE] Avoid `PHINode::removeIncomingValue()` with `PHINode::setIncomingValue()` and `PHINode::setIncomingBlock()` (NFC) (#171960)

[WinEH] Use removeIncomingValueIf() in UpdatePHIOnClonedBlock() (NFC) (#171962)

Merge branch 'main' into users/Enna1/PHINode-removeIncomingValueIf

[MLIR][Python][Transform] Print diagnostics also upon success (#172188)

If we do not collect the diagnostics from the
CollectDiagnosticsToStringScope, even when the named_sequence applied
successfully, the Scope object's destructor will assert (with a
unhelpful message).

[clang-tidy][NFC] Remove obsolete FIXME comment (#172120)

This comment was written 12 years ago. It's no longer correct to say
that diagnostic reporting is under heavy development, and we seem to be
doing just fine without tablegenned IDs, so I think we can simply remove
it.

[clang][PAC] add support for options parameter to __ptrauth

This PR adds support for an 'options' parameter for the __ptrauth
qualifier.
The initial version only exposes the authehntication modes:
 * "strip"
 * "sign-and-strip"
 * "sign-and-auth"

We also support parsing the options but not yet the implementation
 * "isa-pointer"
 * "authenticates-null-values"

The initial support for authentication mode controls exist to support
ABI changes over time, and as a byproduct support basic initial tests
for option parsing.

not to be actually merged but want to keep the tests handy

AArch64: Use AArch64InstrInfo instead of base class in frame lowering (#172183)

AArch64: Use AArch64InstrInfo instead of base class in frame lowering

[LV] Add test coverage for remark for unprofitable RT checks.

Add test coverage for remark when runtime checks are not profitable with
threshold provided.

Also make sure that X86 remark tests actually passes an X86 triple,
which is needed for the threshold remark.

Also clean up the tests a bit.

[SelectionDAG] Support integer types with multiple registers in ComputePHILiveOutRegInfo. (#172081)

PHIs that are larger than a legal integer type are split into multiple
virtual registers that are numbered sequentially. We can propagate the
known bits for each of these registers individually.

Big endian is not supported yet because the register order needs to be
reversed.

Fixes #171671

shorten get/setTempLayoutAttr to get/setTempLayout

[lldb] Add unit tests for NonNullSharedPtr (#172173)

I was investigating a crash yesterday that implicated NonNullSharedPtr
which made me realize I didn't add unit tests for my new class.

replace get/setTempDistributeLayoutAttr to get/setLayoutAttr

clean up setDistributeLayoutAttr in sg distribution pass

[-Wunsafe-buffer-usage] Check isValueDependent before EvaluateAsBooleanCondition (#172091)

The function `EvaluateAsBooleanCondition` assumes (asserts) that the
input `Expr` is not in a dependent context. So it is caller's
responsibility to check the condition before the call. This commit fixes
the issue in `UnsafeBufferUsage.cpp`.

The issue was first found downstream because of some code not
upstreamed. This commit also includes those un-upstreamed code.

rdar://166217941

[BOLT] Introduce BinaryFunctionListType. NFC (#172128)

Use `BinaryFunctionListType` as an alias for `std::vector<BinaryFunction *>`.

[libc++] Implement adjacent_view (#165089)

DAG: Make more use of the LibcallImpl overload of getExternalSymbol (#172171)

Also add a new copy for TargetExternalSymbol that AArch64 needs.