[llvm] [HLSL] Raise Diag for Invalid CounterDirection (PR #137697)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `premerge-monolithic-windows` running on `premerge-windows-1` while building `llvm` at step 5 "clean-build-dir".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/35/builds/9956

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

```
Step 5 (clean-build-dir) failure: Delete failed. (failure)
Step 8 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'lit :: timeout-hang.py' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 13
not env -u FILECHECK_OPTS "C:\Python39\python.exe" C:\ws\buildbot\premerge-monolithic-windows\llvm-project\llvm\utils\lit\lit.py -j1 --order=lexical Inputs/timeout-hang/run-nonexistent.txt  --timeout=1 --param external=0 | "C:\Python39\python.exe" C:\ws\buildbot\premerge-monolithic-windows\build\utils\lit\tests\timeout-hang.py 1
# executed command: not env -u FILECHECK_OPTS 'C:\Python39\python.exe' 'C:\ws\buildbot\premerge-monolithic-windows\llvm-project\llvm\utils\lit\lit.py' -j1 --order=lexical Inputs/timeout-hang/run-nonexistent.txt --timeout=1 --param external=0
# .---command stderr------------
# | lit.py: C:\ws\buildbot\premerge-monolithic-windows\llvm-project\llvm\utils\lit\lit\main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 1 seconds was requested on the command line. Forcing timeout to be 1 seconds.
# `-----------------------------
# executed command: 'C:\Python39\python.exe' 'C:\ws\buildbot\premerge-monolithic-windows\build\utils\lit\tests\timeout-hang.py' 1
# .---command stdout------------
# | Testing took as long or longer than timeout
# `-----------------------------
# error: command failed with exit status: 1

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/137697