Roll clang+rust llvmorg-20-init-13894-g8cb44859-1 : llvmorg-20-init-16062-g091448e3-1 / a522d78598415cdd614ccc6d961160f192f64b5c-1 : 8a1f8039a7ded79d3d4fe97b110016d89f2b11e2-1

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/+log/8cb44859..091448e3

https://chromium.googlesource.com/external/github.com/rust-lang/rust/+log/a522d7859841..8a1f8039a7de

Ran: ./tools/clang/scripts/upload_revision.py 091448e3c17bc8e7812dd7b571c852576d648977

Additionally:
* Ran tools/rust/gnrt_stdlib.py
* Updated //chrome/android/static_initializers.gni because it referred
  to a static initializer in sme-abi-init.c, a file in compiler-rt that
  was removed in llvm/llvm-project#119414.

Bug: 382540640
Disable-Rts: True
Change-Id: I4fd6f81827ed519770048adb74430e8ec1fd849d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6111009
Auto-Submit: Alan Zhao <[email protected]>
Commit-Queue: Zequan Wu <[email protected]>
Commit-Queue: Alan Zhao <[email protected]>
Reviewed-by: Zequan Wu <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1399472}
NOKEYCHECK=True
GitOrigin-RevId: 32fd5de30ad9dcb9d47816e97161de85b36b63c6

Author: alanzhao1

update_rust.py

@@ -31,7 +31,7 @@
 
 # These fields are written by //tools/clang/scripts/upload_revision.py, and
 # should not be changed manually.
-RUST_REVISION = 'a522d78598415cdd614ccc6d961160f192f64b5c'
+RUST_REVISION = '8a1f8039a7ded79d3d4fe97b110016d89f2b11e2'
 RUST_SUB_REVISION = 1
 
 # The revision of Crubit to use from https://github.com/google/crubit