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

Git repository change summary for qt/clang/llvm
Pushed by mirror-service into branch 'upstream/main'.
Changed from c45b4e4d00bed488d6ece5608560561732ae5b9e to 598f15297528855682dcf381575a9c14a7faabc3
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 32819927e0c02662a5c8aae252997748cdc94962 by GitHub (on behalf of Florian Hahn) on 19/07/2026 at 17:46..
[VPlan] Retire LVP::hasTailFolded (NFC). (#210598)

LVP::hasTailFolded incldued an assert that hasTailFOlded matches the
VPlan version. No divergences surfaced, so remove the assert as planned.
https://invent.kde.org/qt/clang/llvm/-/commit/32819927e0c02662a5c8aae252997748cdc94962

Git commit dae991a55eacb4f3c3382f3cba2897ceb43e1725 by GitHub (on behalf of Justin Lebar) on 19/07/2026 at 18:19..
[AA] Use the cmpxchg merged ordering in getModRefInfo (#210545)

When a cmpxchg's address is NoAlias with the queried location,
getModRefInfo still reports sync effects if the cmpxchg is stronger than
monotonic, since an ordered operation constrains code motion around
locations it never accesses.

But a cmpxchg op has two atomic orderings, and getModRefInfo looked
only at one of them.

Change it so we check the merged ordering, i.e. the stronger of the two.
https://invent.kde.org/qt/clang/llvm/-/commit/dae991a55eacb4f3c3382f3cba2897ceb43e1725

Git commit ae023494fba615bb1c75292f93e4521cfe7068b5 by GitHub (on behalf of Alexey Bataev) on 19/07/2026 at 19:00..
[SLP]Add umax/umin/smax/smin as main opcodes for copyables

Added umax/umin/smax/smin intrinsics in for copyables support.

Reviewers: hiraditya, bababuck, RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/209326
https://invent.kde.org/qt/clang/llvm/-/commit/ae023494fba615bb1c75292f93e4521cfe7068b5

Git commit 6bcdcb39c57ea926d3082ec3ecae74bf59b4658e by GitHub (on behalf of Jonas Devlieghere) on 19/07/2026 at 20:58..
[DWARFLinker] Make synthetic type names deterministic under threading (#209553)
https://invent.kde.org/qt/clang/llvm/-/commit/6bcdcb39c57ea926d3082ec3ecae74bf59b4658e

Git commit 598f15297528855682dcf381575a9c14a7faabc3 by GitHub (on behalf of Florian Hahn) on 19/07/2026 at 21:51..
[ConstraintElim] Fix integer overflow when negating constraint (#210627)

Negating a coefficient (e.g. INT64_MIN) can overflow; skip adding the
inverted constraint if it wraps.

Fixes an UBSan failure for the added test.
https://invent.kde.org/qt/clang/llvm/-/commit/598f15297528855682dcf381575a9c14a7faabc3