[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/alexey-bataev/spr/slp-vectorize-select-addressed-loads-as-masked-load-blends'.
Changed from 933c5adbbebdee4b5a7587ad756760d0f9160edd to 3710832853809ad0c1cf2d8eded1c5b6c0657f3c
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 c6e184686cd7d0acfb88531738764f6134700382 by GitHub (on behalf of eleviant) on 21/07/2026 at 17:18..
[AArch64][CodeGen] Fix trampoline basic block offset (#202716)

Trampoline basic blocks are initially created with an offset of zero. As
a result, `isBlockInRange()` may operate on incorrect block offset,
potentially causing unnecessary conditional branch inversions or the
insertion of redundant trampolines.
https://invent.kde.org/qt/clang/llvm-project/-/commit/c6e184686cd7d0acfb88531738764f6134700382

Git commit abe757bd5dfd91718858402375d99152592ab73a by GitHub (on behalf of Sayan Sivakumaran) on 21/07/2026 at 17:20..
[SimplifyCFG] Simplify switch default branch when branch proves operand value (#206597)

If the default branch of a switch proves that there is only one value
that can be sent to the default branch, we can transform the default
branch into an explicit case of the switch. This can assist in further
simplification of the CFG during the simplification loop.

For example, we should be able to create an explicit case for the
default block in cases like the following:

```llvm-ir
switch_bb:
    switch i8 %x, label %default_bb [...]

default_bb:
    %cmp = icmp eq i8 %x, 1
    call void llvm.assume(i1 %cmp) ; Implies %x must be 1
```

Related to #50665.
https://invent.kde.org/qt/clang/llvm-project/-/commit/abe757bd5dfd91718858402375d99152592ab73a

Git commit 03fc6d19191b64dfff4036a3829737b81ee34748 by GitHub (on behalf of John Otken) on 21/07/2026 at 17:27..
[llvm][docs] Update TestingGuide with LLVM PR merge advice (#207754)

Add guidance on waiting for LLVM PR merges before test-suite merges to
prevent failures.

Co-authored-by: John Otken [email protected]
https://invent.kde.org/qt/clang/llvm-project/-/commit/03fc6d19191b64dfff4036a3829737b81ee34748

Git commit ee1eab2a1d28651d0dc675f4f101c0bd78f31e44 by GitHub (on behalf of Alex Sepkowski) on 21/07/2026 at 17:33..
[clang] Update diagnostics to include matrices as accepted types (#201237)

Several `err_builtin_invalid_arg_type` call sites still emit "scalar or
vector of ..." even though the underlying checkers already unwrap matrix
types. This extends the diagnostic with a new "scalar, vector, or matrix
of" option (index 6) and migrates the call sites whose checkers do
accept matrices:

Call sites whose checkers only unwrap VectorType are left at index 5 so
their diagnostic text continues to accurately describe what is accepted.

Tests using the old wording are updated to match.

Fixes #189147

Assisted by copilot

---------

Co-authored-by: Copilot <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/ee1eab2a1d28651d0dc675f4f101c0bd78f31e44

Git commit accd1ed5226b4a8009c33f0a6d1bcfe58902f69e by GitHub (on behalf of John Paul Jepko) on 21/07/2026 at 17:34..
[analyzer] Fix StdVariantChecker crash on std::get with a non-ptr arg (#210167)

When `std::get` is called on a dereferenced integer-to-pointer cast, the
checker `alpha.core.StdVariant` crashes. Minimal reproducer:

```
std::get<int>(*(std::variant<int, char> *)11);
```

Godbolt reproducer - https://godbolt.org/z/4EKe1PrKb

The root cause is that `StdVariantChecker::handleStdGetCall()` calls
`SVal::getType()` on any non-unknown argument, then calls
`getPointeeType()` on the result while assuming it is a pointer type. In
the case of a concrete integer cast to a pointer and then dereferenced,
it is modeled as `loc::ConcreteInt`, whose recovered type is an integer.
`getPointeeType()` on such an input returns a null QualType, on which
`getTypePtr()` crashes.

Fix the crash by using the argument's static type rather than recovering
its SVal, eliminating the need to guard and call `getPointeeType()`.
https://invent.kde.org/qt/clang/llvm-project/-/commit/accd1ed5226b4a8009c33f0a6d1bcfe58902f69e

Git commit 4f5675a0500f9ccc60dcbabb57e1c4dc88c40a84 by GitHub (on behalf of Slava Zakharin) on 21/07/2026 at 17:37..
[CMake] Added missing LLVM_PTHREAD_LIB dependency. (#211041)

Required after #209423.
https://invent.kde.org/qt/clang/llvm-project/-/commit/4f5675a0500f9ccc60dcbabb57e1c4dc88c40a84

Git commit a896e12c5e7031a45eca3ca9392a3c56c304f157 by GitHub (on behalf of Michael Halkenhäuser) on 21/07/2026 at 17:45..
[CodeGen] Rematerializer: Handle subranges for full-mask users  (#211031)

- Create live-interval subranges for new users reading a full lane mask.
- Fixes a missing-subranges case that tripped the `SubRegIdx != 0 &&
LI.hasSubRanges()` assertion in VirtRegRewriter for subreg-tracked
registers.
- Add corresponding unit and lit regression tests.
https://invent.kde.org/qt/clang/llvm-project/-/commit/a896e12c5e7031a45eca3ca9392a3c56c304f157

Git commit 1510167f2cf3a9e89cdb69eee5b3984abd9c930a by GitHub (on behalf of Joel E. Denny) on 21/07/2026 at 17:54..
[FileCheck][NFC] Introduce FileCheckDiagAnnotator (#207485)

This PR is stacked on PR #207484.

In the way that `SearchRangeAnnotator` encapsulates generating search
range annotations, this patch introduces `FileCheckDiagAnnotator` to
encapsulate generating the main annotation for a `FileCheckDiag`. This
change makes `buildInputAnnotations` easier to read, especially after a
third annotator class that will be introduced in a future patch.
https://invent.kde.org/qt/clang/llvm-project/-/commit/1510167f2cf3a9e89cdb69eee5b3984abd9c930a

Git commit 61b877a57de9fc37b8a94a71840ec66b4abfee2c by GitHub (on behalf of Matt Arsenault) on 21/07/2026 at 17:56..
cmake: Filter dangling symlinks from add_td_sources glob (#211051)

Editor lock files (e.g. Emacs' `.#foo.td`) are dangling symlinks that
`file(GLOB *.td)` picks up and passes to add_library(), which then fails
with "Cannot find source file". Filter them out with an EXISTS check, as
already done for header files in add_header_files_for_glob.

Co-authored-by: Claude (Claude Opus 4.8)
https://invent.kde.org/qt/clang/llvm-project/-/commit/61b877a57de9fc37b8a94a71840ec66b4abfee2c

Git commit f63615b2fdbf153ceaf5e2444e89fdb1aa59ab6c by GitHub (on behalf of Arseniy Obolenskiy) on 21/07/2026 at 18:02..
[AMDGPU] Fix wrong min/max for amdgcn.fmed3 NaN 3rd operand (#203822)
https://invent.kde.org/qt/clang/llvm-project/-/commit/f63615b2fdbf153ceaf5e2444e89fdb1aa59ab6c

Git commit 879db2f9478f454f8dcf961b660a9078b73bf1b5 by GitHub (on behalf of Arseniy Obolenskiy) on 21/07/2026 at 18:02..
[AMDGPU] Fix ISel crash on llvm.amdgcn.class with bf16 operand (#210971)
https://invent.kde.org/qt/clang/llvm-project/-/commit/879db2f9478f454f8dcf961b660a9078b73bf1b5

Git commit 35d69e3fe344e063174f54a9785a08249ba18cd9 by GitHub (on behalf of Alexis Engelke) on 21/07/2026 at 18:05..
[Analysis] Use CycleInfo for BranchProbabilityInfo (#210301)

Instead of computing a cycle info (SccInfo) internally in
BranchProbabilityInfo, use CycleInfo and remove the use of LoopInfo.
After recent improvements to CycleInfo, the extra analysis is cheaper
than computing the same information internally.

Replacing LoopInfo with CycleInfo has some impliciation that the
loop/cycle forest can differ if the header of an irreducible loop (which
is ignored by loop info) also happens to be the header of a different
natural loop. (Simple example: S -> A, B; A -> A, B; B -> A, B --
LoopInfo will find {{A}, {B}}; CycleInfo will find {A, {B}}].) In these
cases, the default weights will differ.

This change also makes the handling of entering/exiting edges
consistent between reducible and irreducible loops, therefore,
there are also minor changes for reducible CFGs.
https://invent.kde.org/qt/clang/llvm-project/-/commit/35d69e3fe344e063174f54a9785a08249ba18cd9

Git commit c2fac16a870fd77772b05ca11f7aa1f4e5a4d595 by GitHub (on behalf of Arthur Eubanks) on 21/07/2026 at 18:12..
Revert "[IR] Make semantics of strictfp consistent" (#211057)

Reverts llvm/llvm-project#209465

Causes verifier issues:
https://github.com/llvm/llvm-project/pull/209465#issuecomment-5025559698
https://invent.kde.org/qt/clang/llvm-project/-/commit/c2fac16a870fd77772b05ca11f7aa1f4e5a4d595

Git commit 48883c5aa6428ea91cf22417a519e6302e88a529 by GitHub (on behalf of Derek Schuff) on 21/07/2026 at 18:12..
[WebAssembly] Swap encoding bits for HAS_MEMORY_ORDER for relaxed atomics (#210854)

Following the decision in
https://github.com/WebAssembly/relaxed-atomics/issues/3
https://invent.kde.org/qt/clang/llvm-project/-/commit/48883c5aa6428ea91cf22417a519e6302e88a529

Git commit 15de5a2c4c14070d0c42ab0ca436ce4e192a9baf by GitHub (on behalf of Brad Smith) on 21/07/2026 at 18:17..
[Driver] Remove SUSE SLES special casing for hash-style (#210223)
https://invent.kde.org/qt/clang/llvm-project/-/commit/15de5a2c4c14070d0c42ab0ca436ce4e192a9baf

Git commit d81e22df458858e0ab1fdd56710d1d12251674b0 by GitHub (on behalf of Alexey Bataev) on 21/07/2026 at 18:18..
[SLP][NFC]Add extra tests for blended loads vectorization, NFC



Reviewers: 

Pull Request: https://github.com/llvm/llvm-project/pull/211080
https://invent.kde.org/qt/clang/llvm-project/-/commit/d81e22df458858e0ab1fdd56710d1d12251674b0

Git commit 3710832853809ad0c1cf2d8eded1c5b6c0657f3c by Alexey Bataev on 21/07/2026 at 18:34..
Rebase, address comments

Created using spr 1.3.7
https://invent.kde.org/qt/clang/llvm-project/-/commit/3710832853809ad0c1cf2d8eded1c5b6c0657f3c