[clang] [llvm] [Clang] Fix nomerge attribute not working with __builtin_trap(), __debugbreak(), __builtin_verbose_trap() (PR #101549)

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dyung wrote:

> Thanks for reporting. Those tests are failed due to not updated properly. I relanded this change with updated tests: [ae6dc64](https://github.com/llvm/llvm-project/commit/ae6dc64ec670891cb15049277e43133d4df7fb4b).

Your updated change still seems to cause the test `CodeGen/attr-nomerge.cpp` to fail on AArch64 bots:
- https://lab.llvm.org/buildbot/#/builders/17/builds/1677
- https://lab.llvm.org/buildbot/#/builders/154/builds/2248
- https://lab.llvm.org/buildbot/#/builders/190/builds/3065

Can you either fix or revert if you need time to investigate?

https://github.com/llvm/llvm-project/pull/101549