[clang] [llvm] [RISCV] Add Andes XAndesVPackFPH (Andes Vector Packed FP16) extension. (PR #138827)

[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 `clang,llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/3/builds/15787

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM-Unit :: TargetParser/./TargetParserTests/17/19' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/buildbot/worker/arc-folder/build/unittests/TargetParser/./TargetParserTests-LLVM-Unit-2347-17-19.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=19 GTEST_SHARD_INDEX=17 /buildbot/worker/arc-folder/build/unittests/TargetParser/./TargetParserTests
--

Script:
--
/buildbot/worker/arc-folder/build/unittests/TargetParser/./TargetParserTests --gtest_filter=RiscvExtensionsHelp.CheckExtensions
--
/buildbot/worker/arc-folder/llvm-project/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp:1227: Failure
Value of: [](std::string &Captured, std::string &Expected) { return Captured.find(Expected) != std::string::npos; }(CapturedOutput, ExpectedOutput)
  Actual: false
Expected: true


/buildbot/worker/arc-folder/llvm-project/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp:1227
Value of: [](std::string &Captured, std::string &Expected) { return Captured.find(Expected) != std::string::npos; }(CapturedOutput, ExpectedOutput)
  Actual: false
Expected: true



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


```

</details>

https://github.com/llvm/llvm-project/pull/138827