[qt/clang/llvm]: Summary of bulk changes made

Git repository change summary for qt/clang/llvm
Pushed by mirror-service into branch 'upstream/users/kparzysz/c02-enum-seq'.
Changed from 0000000000000000000000000000000000000000 to 7be5d35e628f8a4c872e86e9859fc4ae95287d19
Acknowledgement was received that this change introduces only existing code that has been pushed to another public open source repository.

This change contains the following new commits:

Git commit a67eac3e141e1044dd98524a010e719b42f51f5e by GitHub (on behalf of Anshil Gandhi) on 17/07/2026 at 17:13..
[NFC][AMDGPU] Cleanup in SOPInstructions.td (#210367)

- Eliminate code which was accidentally merged during a merge-conflict
(https://github.com/llvm/llvm-project/pull/203155/changes#r3560059941)
- Remove comments as they are specific to usubsat.
https://invent.kde.org/qt/clang/llvm/-/commit/a67eac3e141e1044dd98524a010e719b42f51f5e

Git commit db1f902cd6a95c9b80136dfcbe8beb7a58290641 by GitHub (on behalf of Mishal Shah) on 17/07/2026 at 17:22..
Add macOS premerge check workflow (#207435)

Added a premerge check workflow for macOS self-hosted runners to build
and test projects.
https://invent.kde.org/qt/clang/llvm/-/commit/db1f902cd6a95c9b80136dfcbe8beb7a58290641

Git commit f04bf4791ae6d56b822f9bca6eb82ce4adccb989 by GitHub (on behalf of Mikhail R. Gadelha) on 17/07/2026 at 17:23..
[libc][NFC] Port raw syscall users to existing syscall_wrappers (#208039)

Several call sites still invoked syscall_impl directly (or carried
their own SYS_* fallback ladders) for syscalls that already have a
wrapper in src/__support/OSUtil/linux/syscall_wrappers.

This PR removes these syscalls in favor of the syscall_wrappers.
https://invent.kde.org/qt/clang/llvm/-/commit/f04bf4791ae6d56b822f9bca6eb82ce4adccb989

Git commit 246c752ef1b6098a7aa222f02ca09db76e17cabe by GitHub (on behalf of Jordan Rupprecht) on 17/07/2026 at 17:37..
[bazel][libc] Add layering deps (#210380)

Not sure why CI didn't catch it, but
c5837b469c6d6f35eb0822cd9ebd7c2aa7e2ab75 adds some targets that are
broken when layering checks are enabled.
https://invent.kde.org/qt/clang/llvm/-/commit/246c752ef1b6098a7aa222f02ca09db76e17cabe

Git commit c42ce32264f94a8800f4250d7b716cca55f77df6 by GitHub (on behalf of Reid Kleckner) on 17/07/2026 at 17:48..
[docs] Rename misc rst docs to md (#210208)

Tracking issue: #201242
See the [migration guide] for more information. 

[migration guide]:
https://llvm.org/docs/SphinxQuickstartTemplate.html#markdown-migration-guidelines

This is the initial straight rename commit.

Many of these miscellaneous .rst files are not actually part of a real
docs build, since docs/conf.py does not exist for many of them.
https://invent.kde.org/qt/clang/llvm/-/commit/c42ce32264f94a8800f4250d7b716cca55f77df6

Git commit 9b096bb7abf7b57182ae8556451aa34dacd535ec by GitHub (on behalf of Jonas Devlieghere) on 17/07/2026 at 18:06..
[lldb] Add SBProtocolServer to start protocol servers programmatically (#209923)

Starting a protocol server (such as MCP, and in the future potentially
DAP) is only possible from the command line today, via `protocol-server
start`. Add an SB API so an embedder can start one in its own process
and learn where to connect.

SBProtocolServer wraps ProtocolServer::GetOrCreate/Start/Stop and
exposes the listening connection URI. This lets a tool host the engine's
protocol server in-process and talk to it as a normal client, reusing
the server's tools rather than reimplementing them.

Assisted-by: Claude
https://invent.kde.org/qt/clang/llvm/-/commit/9b096bb7abf7b57182ae8556451aa34dacd535ec

Git commit 2b6e9d261433f5ec8c49502f91d63dd7d07346c3 by GitHub (on behalf of Artem Belevich) on 17/07/2026 at 18:12..
[NVPTX] Set default value of nvptx-allow-ftz-atomics to true (#206154)

This is a follow-up to https://github.com/llvm/llvm-project/pull/200732.

Setting the default value of nvptx-allow-ftz-atomics to true preserves
the status quo. It allows the NVPTX backend to emit native
floating-point atomic add instructions by default, rather than falling
back to the CAS loop required for strict FTZ compliance.

Correct FTZ handling forces a lot of existing code to emit CAS loops.
This introduces thread divergence, breaking code that relies on atomic
operations being non-divergent (for example, warp-wide atomic additions
followed by a load of the reduced value without explicit
synchronization).

While FTZ-correct atomic behavior is desirable as a long-term default,
introducing thread divergence into a common operation that previously
"happened to work" without synchronization is highly disruptive.
Defaulting to true makes the FTZ-correct behavior opt-in for now,
allowing users time to audit and adapt their code.

Test cases are updated to verify both enabled and disabled states of the
option, alongside the new default behavior.
https://invent.kde.org/qt/clang/llvm/-/commit/2b6e9d261433f5ec8c49502f91d63dd7d07346c3

Git commit 50c8f07e3eebf1ff5a1d9378d77aef5df9583293 by GitHub (on behalf of Endre Fülöp) on 17/07/2026 at 18:39..
[clang][analyzer] Fix assertion failure in StdLibraryFunctionsChecker with non-integral ssize_t (#209655)

In StdLibraryFunctionsCheckers' `RangeConstraint::checkSpecificValidity`
asserted that the constrained argument type is integral. When user code
typedefs `ssize_t` to a non-integral type (e.g. `float`) even though
this violates POSIX.1-2017, which requires `ssize_t` to be a signed
integer type, the signature still matches (same canonical type) and the
assertion fires during constraint validation. Remove it and let
`validateByConstraints` gracefully reject the summary by returning
false.

Fixes #209436
https://invent.kde.org/qt/clang/llvm/-/commit/50c8f07e3eebf1ff5a1d9378d77aef5df9583293

Git commit 40c4fea67f49b841bd064624219efceab91b65e0 by GitHub (on behalf of Krisitan Erik Olsen) on 17/07/2026 at 18:44..
[SROA] Fix assertion failure when promoting self-referential load/store (#208826)

When LoadAndStorePromoter::run processes a block where a store's value
operand is defined by the load being promoted (a self-referential cycle
in unreachable code), it sets StoredValue to the load instruction. When
it then calls replaceAllUsesWith, the doRAUW assertion fires because the
replacement value contains the value being replaced.

The single-block promotion paths in promoteSingleBlockAlloca already
guard against this with a check for ReplVal == LI, replacing with poison
instead. This patch adds the same guard to the in-block load path in
LoadAndStorePromoter::run, which was missing it. Substituting poison is
correct here since this situation only arises in unreachable code.

The regression was introduced in #135609, which added the
propagateStoredValuesToLoads path in SROA that routes through
LoadAndStorePromoter::run. LoadStoreRewriter handles aggregates and is
unrelated to this path.

Fixes #204799
https://invent.kde.org/qt/clang/llvm/-/commit/40c4fea67f49b841bd064624219efceab91b65e0

Git commit 714d124d0aaf3effa3e83d01783fe0ed2cd3eea9 by GitHub (on behalf of Hongyu Chen) on 17/07/2026 at 18:47..
Revert "[RISCV][P-ext][NFC] Add cross-project tests for packed zip/unzip intrinsics" (#210401)

Reverts llvm/llvm-project#209575
https://invent.kde.org/qt/clang/llvm/-/commit/714d124d0aaf3effa3e83d01783fe0ed2cd3eea9

Git commit 93b1240309309d5c2f8f94527ff7c7bd5df359af by GitHub (on behalf of Reid Kleckner) on 17/07/2026 at 18:56..
[docs] Finish misc MyST migration (#210209)

Tracking issue: #201242
See the [migration guide] for more information.

[migration guide]:
https://llvm.org/docs/SphinxQuickstartTemplate.html#markdown-migration-guidelines

This is a stacked PR based on #210208, which is the standalone rename
commit for this miscellaneous Markdown migration batch.

This was prepared with rst2myst plus LLM-assisted cleanup. LLDB man
pages are intentionally left as reStructuredText because LLDB man-page
building should not take on Markdown parser dependencies.

Unfortunately, many of these miscellaneous docs do not have working
standalone doc build targets, so I was not able to render HTML for all
of them. I think the scope is small enough that this is reviewable by
hand.
https://invent.kde.org/qt/clang/llvm/-/commit/93b1240309309d5c2f8f94527ff7c7bd5df359af

Git commit 91bb8f4ee8452d3e2bda7544556fa66dba462414 by GitHub (on behalf of Ramkumar Ramachandra) on 17/07/2026 at 19:07..
[VPlan] Introduce vputils::doesGeneratePerAllLanes (#199047)

Introduce a query for recipes that produce scalar values for all VF
lanes, returning true for non-single-scalar replicates, non-first-lane
SIVSteps, and a couple of VPInstructions.
https://invent.kde.org/qt/clang/llvm/-/commit/91bb8f4ee8452d3e2bda7544556fa66dba462414

Git commit 93bce300db95e4fbb82b1a6ef69fe125c71b77f3 by GitHub (on behalf of Ayokunle Amodu) on 17/07/2026 at 19:09..
[CIR][AMDGPU] Add support for AMDGCN log builtins (#198032)

Adds codegen support for the following AMDGCN log builtins:

- __builtin_amdgcn_logf (float)
- __builtin_amdgcn_log_bf16 (bfloat16)

These are lowered to the corresponding `llvm.amdgcn.log` intrinsic.
https://invent.kde.org/qt/clang/llvm/-/commit/93bce300db95e4fbb82b1a6ef69fe125c71b77f3

Git commit 3e55f3c56e8706fa12792b5a4de05f636bf798d0 by GitHub (on behalf of Jackson Stogel) on 17/07/2026 at 19:12..
[libc][realpath][test] Create test files/directories (#209369)

Follow-up PRs will add path validation etc to `realpath`, which will
require paths to exist in the filesystem.

This PR bumps the memory limit in `HermeticTestUtils.cpp`. The realpath
unit tests allocate quite a few strings, and since memory in hermetic
tests is never freed, the unit test quickly reaches the limit.
https://invent.kde.org/qt/clang/llvm/-/commit/3e55f3c56e8706fa12792b5a4de05f636bf798d0

Git commit 4070621c866fb4156f7c7d15039d12a4295f46c2 by GitHub (on behalf of Slava Zakharin) on 17/07/2026 at 19:13..
[flang][OpenACC] Discover type descriptors referenced by fir.create_box (#210393)

Register the IndirectGlobalAccess interface for fir.create_box so
acc-implicit-declare finds the derived-type type-descriptor global a
create_box of a record array needs on the device, as it already does
for fir.embox and fir.rebox.

Assisted-by: Cursor
https://invent.kde.org/qt/clang/llvm/-/commit/4070621c866fb4156f7c7d15039d12a4295f46c2

Git commit c2235e41af77a943b520e7e49aba9f11dc250ddf by Krzysztof Parzyszek on 17/07/2026 at 19:17..
[Support] Add constexpr versions of Add/Sub/MulOverflow
https://invent.kde.org/qt/clang/llvm/-/commit/c2235e41af77a943b520e7e49aba9f11dc250ddf

Git commit 25b4b97ac6e64e0a027d8b5e9191afb2ed691fa0 by Krzysztof Parzyszek on 17/07/2026 at 19:17..
Use {} and structured bindings
https://invent.kde.org/qt/clang/llvm/-/commit/25b4b97ac6e64e0a027d8b5e9191afb2ed691fa0

Git commit 8b931740b452c8bb438d3ba761259f4cf6881016 by Krzysztof Parzyszek on 17/07/2026 at 19:17..
[ADT] Make enum iterators constexpr
https://invent.kde.org/qt/clang/llvm/-/commit/8b931740b452c8bb438d3ba761259f4cf6881016

Git commit bb45367afd2a2e08317c5e18523dfe9c30afa90c by Krzysztof Parzyszek on 17/07/2026 at 22:55..
Add constexpr checks
https://invent.kde.org/qt/clang/llvm/-/commit/bb45367afd2a2e08317c5e18523dfe9c30afa90c

Git commit 7be5d35e628f8a4c872e86e9859fc4ae95287d19 by Krzysztof Parzyszek on 17/07/2026 at 22:59..
format
https://invent.kde.org/qt/clang/llvm/-/commit/7be5d35e628f8a4c872e86e9859fc4ae95287d19