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[ControlFlowHub] Fix duplicate DomTree updates when branch successors are identical (#176620)

When a conditional branch has both successors pointing to the same block
(e.g., `br i1 %cond, label %bb, label %bb`), `ControlFlowHub::finalize`
generates duplicate `Delete` updates for the same CFG edge. This can
cause assertion in `fix-irreducible` pass.

Fixes #176553.

fix tests after latest changes

Created using spr 1.3.8-beta.1

Add newline at end of file.

Merge remote-tracking branch 'upstream/main' into users/abhinavgaba/udp-fallback-4

[NFC][OpenMP][Offload] Add tests for `use_device_ptr(fb_preserve/nullify)`. (3/4) (#173930)

Depends on #170578.

The fallback modifiers are currently part of OpenMP 6.1. 4/8 of the
tests check for the current bad output, with FIXME comments.

3 of these "bad" tests will be fixed with the 4th PR in this stack with
the `fb_nullify` codegen changes.

4th bad test will need a follow-up fix to privatization of byref
`use_device_ptr` operands.

Dependent PR: #173931.

nfscl: Fix handling of case insensitive file systems

Name caching must be handled somewhat differently
for case insensitive file systems.  Negative name
caching does not work and, for rename, all names
associated with the rename'd vnode must be disabled.

For a case insensitive ZFS file system that is exported,
the unpatched code did work, since the change in mtime
or ctime of the directory when other case names were
created or rename'd would disable the false name cache
hit.  However, an export of an msdosfs file system
breaks the NFS client, because it only works if ctime/mtime
is changed whenever a name is added/removed.  Depending
on what the server file system is, this may not happen,
due to clock resolution or lack of support for these
attributes.

This patch checks to see if the server file system is

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Add/update clang codegen tests.

review comment

[ControlFlowHub] Fix duplicate DomTree updates when branch successors are identical

When a conditional branch has both successors pointing to the same block (e.g., `br i1 %cond, label %bb, label %bb`), `ControlFlowHub::finalize` generates duplicate `Delete` updates for the same CFG edge. This can cause assertion in `fix-irreducible` pass.

Fixes #176553.

[AMDGPU] Fix inline constant encoding for `v_pk_fmac_f16` (#176659)

This PR handles`v_pk_fmac_f16` inline constant encoding/decoding
differences between pre-GFX11 and GFX11+ hardware.

- Pre-GFX11: fp16 inline constants produce `(f16, 0)` - value in low 16
bits, zero in high.
- GFX11+: fp16 inline constants are duplicated to both halves `(f16,
f16)`.

Fixes #94116.

[lld][WebAssembly] Use `.contains` rather than `.count` for testing set membership. NFC (#176610)

[lldb] Fix the 'skipUnlessUndefinedBehaviorSanitizer' decorator. (#176463)

This decorator is trying to reference the file that is already deleted
by the time the `nm` call is made.

Fix this by correcting how `_compiler_supports` the `output_file`
argument.

[OpenACC][MLIR] clone firstprivate operands during ACCIfClauseLowering (#176856)

Clone the firstprivate operands into the compute region side. This also
fixes an issue where references to acc.firstprivate remain on the host
side.

[clang-tidy] Fix modernize-use-using wrongly modifies typedef of parenthesized functions (#176565)

Closes [#176267](https://github.com/llvm/llvm-project/issues/176267)

Merge remote-tracking branch 'freebsd/main'

Rename isPreserved->isLibcall and add comment

Rename isPreserved->isLibcall and add comment

[asan] Reduce stack usage of DescribeThread() (#176540)

Manually eliminate tail calls, because the compiler didn't.

This fixes some rare crashes (stack overflows) that can occur during
ASan's error reporting, if there is a deep nesting structure to thread
creation. Besides that, it has no change to ASan's output.

   lint: support __float128

   Needed by libquadmath.

clang format

Created using spr 1.3.7

[𝘀𝗽𝗿] initial version

Created using spr 1.3.7

Add missing return on nullptr check (#92125)

Fixes #92123

Add extra check

Created using spr 1.3.7

   lint: accept _Complex type specifiers in any order

   C23 6.7.3.1p2 says so.

   Seen in external/gpl3/gcc/dist/libquadmath/quadmath.h:33.

[flang][OpenMP] Update semantic checks for LINEAR clause

Fixes https://github.com/llvm/llvm-project/issues/173980.

In particular, make step-simple-modifier be compatible (i.e. not
exclusive) for OpenMP spec versions < 52.

[libc][NFC] update configure page with wchar flag (#177050)

Whenever the cmake runs it updates configure.rst based on the contents
of config.json. This PR just applies the change generated after #176110

remove leftover code

[libc] Cast in startup to silence warning (#177048)

In #174772 gcc warns on an implicit cast from `ElfW(Xword)` (unsigned
long
int) to `ElfW(word)` (unsigned int). This PR adds an explicit cast.

[flang][OpenMP] Move check for ORDERED to check-omp-loop.cpp, NFC

Merge tag 'devicetree-fixes-for-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Fix a refcount leak in of_alias_scan()

 - Support descending into child nodes when populating nodes
   in /firmware

* tag 'devicetree-fixes-for-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: fix reference count leak in of_alias_scan()
  of: platform: Use default match table for /firmware