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

Git repository change summary for qt/clang/llvm-project
Pushed by mirror-service into branch 'upstream/users/arsenm/runtime-libcalls/migrate-predicates'.
Changed from 0000000000000000000000000000000000000000 to fdecb09823696c2808fe92babb6f84e5afa01d88
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-project/-/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-project/-/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-project/-/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-project/-/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-project/-/commit/598f15297528855682dcf381575a9c14a7faabc3

Git commit 01683dbe7e2071e8cc3aa2874e623259079aa1ae by GitHub (on behalf of Lang Hames) on 19/07/2026 at 23:41..
[orc-rt] Replace RunWrapperCall with generalized Dispatch (#210591)

RunWrapperCall dispatched wrapper-function calls, but the Session also
needs to dispatch continuations for results returned by the controller.
Replace it with a generalized Dispatch mechanism (DispatchFn) that is
handed an opaque Task for each unit of work, covering both.

QueueingRunner is correspondingly simplified: it no longer knows
anything about wrapper functions and just enqueues the Task it is given.
Tests and the noDispatch helper are updated to the new interface.
https://invent.kde.org/qt/clang/llvm-project/-/commit/01683dbe7e2071e8cc3aa2874e623259079aa1ae

Git commit 16ffd27e3737c01cbabad6eed77b919dc977ad6c by GitHub (on behalf of Petr Hosek) on 20/07/2026 at 00:47..
[libcxx][NFC] Address -Wmicrosoft-cast in MSVC's exception_ptr (#210570)

This was introduced as part of #94977. Rather than suppressing the
warning with `#pragma clang diagnostic ignored`, we use
`reinterpret_cast` to avoid the implicit conversion.
https://invent.kde.org/qt/clang/llvm-project/-/commit/16ffd27e3737c01cbabad6eed77b919dc977ad6c

Git commit c6672a6fdf1469d818d0ac8aaa2c31a0f18e729a by GitHub (on behalf of Benji Smith) on 20/07/2026 at 01:26..
[InstCombine] Fix invalid fshl -> lshr fold when shift is vector with constant zero lane (#210606)

For vectors, this is not valid if a subset of the lanes are constant
zero. Doing this fold introduces poison in those lanes. A similar fix
was done for fshr in 46957a138dea339799059ea5bf032e40042ff185 however
the same issue seems to apply to fshl

Fixes https://github.com/llvm/llvm-project/issues/210605
https://invent.kde.org/qt/clang/llvm-project/-/commit/c6672a6fdf1469d818d0ac8aaa2c31a0f18e729a

Git commit 5497f466e4fc634f91de043fc80a9cd8cc0f32a1 by GitHub (on behalf of TelGome) on 20/07/2026 at 02:35..
[RISCV][P-ext] Support Packed Narrowing Zip (#210040)
https://invent.kde.org/qt/clang/llvm-project/-/commit/5497f466e4fc634f91de043fc80a9cd8cc0f32a1

Git commit 53c6ce165aef58e1885d574c1ec597d091c3c8fc by GitHub (on behalf of Hristo Hristov) on 20/07/2026 at 02:47..
[libc++][cmp][NFC] Fix: Empty namespaces should be avoided (#210624)

Context: Including `<__utility/cmp.h>` causes:

> cmp.h:25:1: error: Empty namespaces should be avoided. Move any checks
around the namespace instead.
[libcpp-avoid-empty-namespaces,-warnings-as-errors]
https://invent.kde.org/qt/clang/llvm-project/-/commit/53c6ce165aef58e1885d574c1ec597d091c3c8fc

Git commit 8a119310dae2fd67497c8611fc3208d16a36a2c3 by GitHub (on behalf of Tony Varghese) on 20/07/2026 at 03:34..
[clang][NFC] Bump the maximum number of Frontend diagnostics (#210345)

The number of Frontend diagnostics in DiagnosticFrontendKinds.td is
close to the DIAG_SIZE_FRONTEND limit of 200 (195 in use), and in-flight
PRs adding frontend diagnostics (e.g. #187986) run into the static
assert in DiagnosticIDs.cpp. Increase the limit to 300, following the
precedent of #200948 which did the same for Sema diagnostics.

Co-authored-by: Tony Varghese <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/8a119310dae2fd67497c8611fc3208d16a36a2c3

Git commit e5c014cb93176199f8c74cb98f8299142cf6b583 by Matt Arsenault on 20/07/2026 at 09:09..
RuntimeLibcalls: Rename RuntimeLibcallPredicate to RuntimeLibcallAvailability

Rename to avoid confusing partial name collisions in future changes.

Co-authored-by: Claude (Claude-Opus-4.8) <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/e5c014cb93176199f8c74cb98f8299142cf6b583

Git commit 87febc44fb751d29cc68b6ed598cbd0224eaa5d2 by Matt Arsenault on 20/07/2026 at 09:09..
RuntimeLibcalls: Reuse AssemblerPredicate's operators for libcalls

Allow specifying RuntimeLibcall's availability in terms of individual
triple properties composed with logical operators.

Co-authored-by: Claude (Claude-Opus-4.8) <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/87febc44fb751d29cc68b6ed598cbd0224eaa5d2

Git commit b6cd8755aeaf03b6226c7ea0b3170b24ddbef691 by Matt Arsenault on 20/07/2026 at 09:09..
TableGen: Parenthesize negated predicate-dag leaves with operators

Allows writing more general expressions in the predicate code. Previously
not ("a == b") would be emitted as !a == b.

Co-authored-by: Claude (Claude-Opus-4.8) <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/b6cd8755aeaf03b6226c7ea0b3170b24ddbef691

Git commit 192cb1aec325a6bed38b23affdd75ecc3d6eccbf by Matt Arsenault on 20/07/2026 at 09:09..
Only apply parens to not
https://invent.kde.org/qt/clang/llvm-project/-/commit/192cb1aec325a6bed38b23affdd75ecc3d6eccbf

Git commit fdecb09823696c2808fe92babb6f84e5afa01d88 by Matt Arsenault on 20/07/2026 at 10:13..
RuntimeLibcalls: Migrate to dag libcall predicates

Switch to using dag predicates instead of free-form code predicates.

Co-authored-by: Claude (Claude-Opus-4.8) <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/fdecb09823696c2808fe92babb6f84e5afa01d88