[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/amdgpu/use-ProcessorAlias'.
Changed from a312dfbfad81c68eb8fe9bbb5ffeda735ddc5ff2 to 58651fbfe8caa6e9e6772119ffcd1a7cd2a5a3a8
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 4792e5407dca4738bac3adab0d0bb0fd562b9e96 by Matt Arsenault on 25/07/2026 at 06:17..
TableGen: Add first class support for processor aliases

Previously isCPUStringValid was virtual so TableGen could emit an
AArch64 specific hack for recognizing cpu aliases. Teach tablegen
about aliases, and insert each alias into the CPU subtype table as its
own entry (sorted by name, carrying the canonical processor's features
and scheduling model).

There is further opportunity for code sharing improvements. AArch64's
aliases are consumed by ARMTargetDefEmitter to emit a custom inc file
in TargetParser which should be universalized.

Co-authored-by: Claude (Claude-Opus-4.8) <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/4792e5407dca4738bac3adab0d0bb0fd562b9e96

Git commit 58651fbfe8caa6e9e6772119ffcd1a7cd2a5a3a8 by Matt Arsenault on 25/07/2026 at 06:17..
AMDGPU: Use ProcessorAlias for legacy arch names

Older targets have aliasing names which were previously implemented
by defining a second copy of the processor, identical except for the name
Use the recently improved tablegen mechanism for defining name-only aliases.
This dedupliates some redundant table entries, like the sched model.

Co-authored-by: Claude (Claude-Opus-4.8) <[email protected]>
https://invent.kde.org/qt/clang/llvm-project/-/commit/58651fbfe8caa6e9e6772119ffcd1a7cd2a5a3a8