[llvm] [msan] Handle NEON vector load (PR #130457)

[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 6 "test-openmp".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/10/builds/1727

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

```
Step 6 (test-openmp) failure: test (failure)
******************** TEST 'libarcher :: reduction/parallel-reduction-nowait.c' FAILED ********************
Exit Code: 66

Command Output (stdout):
--
# RUN: at line 15
/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/./bin/clang -fopenmp  -gdwarf-4 -O1 -fsanitize=thread  -I /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/openmp/tools/archer/tests -I /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -L /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -Wl,-rpath,/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/runtime/src   /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/openmp/tools/archer/tests/reduction/parallel-reduction-nowait.c -o /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/tools/archer/tests/reduction/Output/parallel-reduction-nowait.c.tmp -latomic && env TSAN_OPTIONS='ignore_noninstrumented_modules=0:ignore_noninstrumented_modules=1' /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/tools/archer/tests/reduction/Output/parallel-reduction-nowait.c.tmp 2>&1 | tee /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/tools/archer/tests/reduction/Output/parallel-reduction-nowait.c.tmp.log | /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/./bin/FileCheck /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/openmp/tools/archer/tests/reduction/parallel-reduction-nowait.c
# executed command: /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/./bin/clang -fopenmp -gdwarf-4 -O1 -fsanitize=thread -I /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/openmp/tools/archer/tests -I /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -L /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/runtime/src -Wl,-rpath,/home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/runtime/src /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/openmp/tools/archer/tests/reduction/parallel-reduction-nowait.c -o /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/tools/archer/tests/reduction/Output/parallel-reduction-nowait.c.tmp -latomic
# note: command had no output on stdout or stderr
# executed command: env TSAN_OPTIONS=ignore_noninstrumented_modules=0:ignore_noninstrumented_modules=1 /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/tools/archer/tests/reduction/Output/parallel-reduction-nowait.c.tmp
# note: command had no output on stdout or stderr
# error: command failed with exit status: 66
# executed command: tee /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/runtimes/runtimes-bins/openmp/tools/archer/tests/reduction/Output/parallel-reduction-nowait.c.tmp.log
# note: command had no output on stdout or stderr
# executed command: /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.build/./bin/FileCheck /home/botworker/builds/openmp-offload-amdgpu-runtime-2/llvm.src/openmp/tools/archer/tests/reduction/parallel-reduction-nowait.c
# note: command had no output on stdout or stderr

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/130457