[clang] [clang][bytecode][NFC] Make CheckVolatile static (PR #113785)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-quick` running on `linaro-clang-aarch64-quick` while building `clang` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/65/builds/6735

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'Clangd Unit Tests :: ./ClangdTests/248/316' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests-Clangd Unit Tests-2252767-248-316.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=316 GTEST_SHARD_INDEX=248 /home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests
--

Note: This is test shard 249 of 316.
[==========] Running 4 tests from 4 test suites.
[----------] Global test environment set-up.
[----------] 1 test from CommandMangler
[ RUN      ] CommandMangler.Sysroot
[       OK ] CommandMangler.Sysroot (46 ms)
[----------] 1 test from CommandMangler (46 ms total)

[----------] 1 test from GlobalCompilationDatabaseTest
[ RUN      ] GlobalCompilationDatabaseTest.FallbackCommand
[       OK ] GlobalCompilationDatabaseTest.FallbackCommand (31 ms)
[----------] 1 test from GlobalCompilationDatabaseTest (31 ms total)

[----------] 1 test from CrossFileRenameTests
[ RUN      ] CrossFileRenameTests.WithUpToDateIndex
ASTWorker building file /clangd-test/foo.h version null with command 
[/clangd-test]
clang -xobjective-c++ /clangd-test/foo.h
Driver produced command: cc1 -cc1 -triple aarch64-unknown-linux-gnu -fsyntax-only -disable-free -clear-ast-before-backend -main-file-name foo.h -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=non-leaf -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu generic -target-feature +v8a -target-feature +fp-armv8 -target-feature +neon -target-abi aapcs -debugger-tuning=gdb -fdebug-compilation-dir=/clangd-test -fcoverage-compilation-dir=/clangd-test -resource-dir lib/clang/20 -internal-isystem lib/clang/20/include -internal-isystem /usr/local/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -ferror-limit 19 -fno-signed-char -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fobjc-runtime=gcc -fobjc-encode-cxx-class-template-spec -fobjc-exceptions -fcxx-exceptions -fexceptions -no-round-trip-args -target-feature -fmv -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -x objective-c++ /clangd-test/foo.h
Building first preamble for /clangd-test/foo.h version null
Built preamble of size 714228 for file /clangd-test/foo.h version null in 0.40 seconds
indexed preamble AST for /clangd-test/foo.h version null:
  symbol slab: 0 symbols, 120 bytes
  ref slab: 0 symbols, 0 refs, 128 bytes
  relations slab: 0 relations, 24 bytes
not idle after addDocument
UNREACHABLE executed at ../llvm/clang-tools-extra/clangd/unittests/SyncAPI.cpp:22!
indexed file AST for /clangd-test/foo.h version null:
  symbol slab: 3 symbols, 4912 bytes
  ref slab: 3 symbols, 5 refs, 4320 bytes
  relations slab: 0 relations, 24 bytes
Build dynamic index for main-file symbols with estimated memory usage of 12648 bytes
 #0 0x0000aaaadc88d6d4 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xfca6d4)
 #1 0x0000aaaadc88b6e0 llvm::sys::RunSignalHandlers() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xfc86e0)
 #2 0x0000aaaadc88de20 SignalHandler(int) Signals.cpp:0:0
 #3 0x0000ffff86df6598 (linux-vdso.so.1+0x598)
 #4 0x0000ffff8695f200 __pthread_kill_implementation ./nptl/./nptl/pthread_kill.c:44:76
 #5 0x0000ffff8691a67c gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #6 0x0000ffff86907130 abort ./stdlib/./stdlib/abort.c:81:7
 #7 0x0000aaaadc83b424 llvm::RTTIRoot::anchor() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xf78424)
 #8 0x0000aaaadc6f945c clang::clangd::runCodeComplete(clang::clangd::ClangdServer&, llvm::StringRef, clang::clangd::Position, clang::clangd::CodeCompleteOptions) (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xe3645c)
 #9 0x0000aaaadc650e08 clang::clangd::(anonymous namespace)::CrossFileRenameTests_WithUpToDateIndex_Test::TestBody() RenameTests.cpp:0:0
#10 0x0000aaaadc8e823c testing::Test::Run() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0x102523c)
#11 0x0000aaaadc8e94f8 testing::TestInfo::Run() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0x10264f8)
...

```

</details>

https://github.com/llvm/llvm-project/pull/113785