[llvm] [LAA] Strip findForkedPointer (NFC) (PR #140298)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `arc-builder` running on `arc-worker` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/3/builds/21760

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

```
Step 6 (test-build-unified-tree-check-all) failure: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
...
10.117 [4/18/38] Linking CXX executable unittests/XRay/XRayTests
10.165 [3/18/39] Linking CXX executable unittests/Transforms/IPO/IPOTests
10.242 [2/18/40] Linking CXX executable unittests/Transforms/Vectorize/VectorizeTests
10.425 [1/18/41] Linking CXX executable unittests/MIR/MIRTests
10.441 [1/17/42] Linking CXX executable unittests/IR/IRTests
10.725 [1/16/43] Linking CXX executable unittests/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerTests
10.780 [1/15/44] Linking CXX executable unittests/tools/llvm-profdata/LLVMProfdataTests
11.215 [1/14/45] Linking CXX executable unittests/ExecutionEngine/MCJIT/MCJITTests
11.759 [1/13/46] Linking CXX executable unittests/tools/llvm-cfi-verify/CFIVerifyTests
12.228 [1/12/47] Linking CXX executable unittests/Target/TargetMachineCTests
command timed out: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1213.034477

```

</details>

https://github.com/llvm/llvm-project/pull/140298