John Hui b791501e80
Revert "Reapply "[CGObjC] Allow clang.arc.attachedcall on -O0 (#164875)" (#177285)" (#177533)
This reverts commit 4b939beb79e3390046b760bef71b7d891ba9b4df.

This commit seems to be causing these test failures:

- ThreadSanitizer-x86_64-iossim.Darwin.norace-objcxx-run-time.mm
https://ci.swift.org/job/llvm.org/job/clang-san-iossim/14230/testReport/junit/ThreadSanitizer-x86_64-iossim/Darwin/norace_objcxx_run_time_mm/
- ThreadSanitizer-x86_64-iossim.Darwin.objc-synchronize-cycle-tagged.mm
https://ci.swift.org/job/llvm.org/job/clang-san-iossim/14230/testReport/junit/ThreadSanitizer-x86_64-iossim/Darwin/objc_synchronize_cycle_tagged_mm/
- ThreadSanitizer-x86_64-iossim.Darwin.objc-synchronize-tagged.mm
https://ci.swift.org/job/llvm.org/job/clang-san-iossim/14230/testReport/junit/ThreadSanitizer-x86_64-iossim/Darwin/objc_synchronize_tagged_mm/
- ThreadSanitizer-x86_64-iossim.Darwin.objc-synchronize.mm
https://ci.swift.org/job/llvm.org/job/clang-san-iossim/14230/testReport/junit/ThreadSanitizer-x86_64-iossim/Darwin/objc_synchronize_mm/


With the error message:

```
fatal error: error in backend: Cannot select: intrinsic %llvm.objc.clang.arc.noop.use
```
2026-01-23 11:56:31 +01:00
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