Merge ref 'db3e99bbab28' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: db3e99b
Filtered ref: rust-lang/stdarch@4749411
Upstream diff: 873d468...db3e99b

This merge was created using https://github.com/rust-lang/josh-sync.

Author: The rustc-josh-sync Cronjob Bot

.github/workflows/ci.yml

@@ -165,9 +165,6 @@ jobs:
       - name: install sccache
         run: src/ci/scripts/install-sccache.sh
 
-      - name: select Xcode
-        run: src/ci/scripts/select-xcode.sh
-
       - name: install clang
         run: src/ci/scripts/install-clang.sh
 

.gitmodules

@@ -25,7 +25,7 @@
 [submodule "src/llvm-project"]
 	path = src/llvm-project
 	url = https://github.com/rust-lang/llvm-project.git
-	branch = rustc/21.1-2025-08-01
+	branch = rustc/22.1-2026-01-27
 	shallow = true
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book