[llvm] [AA] No synchronization effects for never-escaping identified local (PR #193939)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-offload-amdgpu-runtime-2` running on `rocm-worker-hw-02` while building `llvm` at step 10 "Add check check-libc-amdgcn-amd-amdhsa".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/10/builds/28290

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

```
Step 10 (Add check check-libc-amdgcn-amd-amdhsa) failure: test (failure)
******************** TEST 'libc :: src/__support/CPP/libc.test.src.__support.CPP.atomic_test.__hermetic__.__build__' FAILED ********************
[==========] Running 4 tests from 1 test suite.
[ RUN      ] LlvmLibcAtomicTest.LoadStore
[       OK ] LlvmLibcAtomicTest.LoadStore (1 us)
[ RUN      ] LlvmLibcAtomicTest.CompareExchangeStrong
/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/libc/test/src/__support/CPP/atomic_test.cpp:29: FAILURE
      Expected: aint.compare_exchange_strong(desired, 100)
      Which is: 0
To be equal to: true
      Which is: 1
[  FAILED  ] LlvmLibcAtomicTest.CompareExchangeStrong
[ RUN      ] LlvmLibcAtomicTest.TrivialCompositeData
/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/libc/test/src/__support/CPP/atomic_test.cpp:44: FAILURE
      Expected: data.load(__llvm_libc_23_0_0_git::cpp::MemoryOrder::RELAXED).a
      Which is: 0
To be equal to: 'a'
      Which is: 97
[  FAILED  ] LlvmLibcAtomicTest.TrivialCompositeData
[ RUN      ] LlvmLibcAtomicTest.AtomicRefTest
/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/libc/test/src/__support/CPP/atomic_test.cpp:57: FAILURE
      Expected: aint.load(__llvm_libc_23_0_0_git::cpp::MemoryOrder::RELAXED)
      Which is: 1344048160
To be equal to: 123
      Which is: 123
[  FAILED  ] LlvmLibcAtomicTest.AtomicRefTest
Ran 4 tests.  PASS: 1  FAIL: 3

********************


```

</details>

https://github.com/llvm/llvm-project/pull/193939