[clang] [AArch64] Implement FP8 floating-point mode helper intrinsics (PR #100608)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-remote-linux-ubuntu` running on `as-builder-9` while building `clang` at step 16 "test-check-lldb-api".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/195/builds/249

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

```
Step 16 (test-check-lldb-api) failure: Test just built components: check-lldb-api completed (failure)
...
PASS: lldb-api :: types/TestIntegerType.py (1199 of 1208)
PASS: lldb-api :: types/TestRecursiveTypes.py (1200 of 1208)
PASS: lldb-api :: types/TestIntegerTypeExpr.py (1201 of 1208)
PASS: lldb-api :: types/TestShortType.py (1202 of 1208)
PASS: lldb-api :: types/TestLongTypes.py (1203 of 1208)
PASS: lldb-api :: types/TestShortTypeExpr.py (1204 of 1208)
PASS: lldb-api :: types/TestLongTypesExpr.py (1205 of 1208)
PASS: lldb-api :: tools/lldb-server/TestNonStop.py (1206 of 1208)
PASS: lldb-api :: tools/lldb-server/TestLldbGdbServer.py (1207 of 1208)
UNRESOLVED: lldb-api :: tools/lldb-server/signal-filtering/TestGdbRemote_QPassSignals.py (1208 of 1208)
******************** TEST 'lldb-api :: tools/lldb-server/signal-filtering/TestGdbRemote_QPassSignals.py' FAILED ********************
Script:
--
/usr/bin/python3.12 /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/test/API/dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./lib --env LLVM_INCLUDE_DIR=/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/include --env LLVM_TOOLS_DIR=/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./bin --libcxx-include-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/include/c++/v1 --libcxx-include-target-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/include/aarch64-unknown-linux-gnu/c++/v1 --libcxx-library-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./lib/aarch64-unknown-linux-gnu --arch aarch64 --build-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/lldb-test-build.noindex --lldb-module-cache-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./bin/lldb --compiler /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/bin/clang --dsymutil /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./bin/dsymutil --make /usr/bin/make --llvm-tools-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./bin --lldb-obj-root /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/tools/lldb --lldb-libs-dir /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/./lib --platform-url connect://jetson-agx-2198.lab.llvm.org:1234 --platform-working-dir /home/ubuntu/lldb-tests --sysroot /mnt/fs/jetson-agx-ubuntu --env ARCH_CFLAGS=-mcpu=cortex-a78 --platform-name remote-linux /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/test/API/tools/lldb-server/signal-filtering -p TestGdbRemote_QPassSignals.py
--
Exit Code: 1

Command Output (stdout):
--
lldb version 20.0.0git (https://github.com/llvm/llvm-project.git revision 1df5c943439b050dbc34e7a1c88c4d8ec90d26b5)
  clang revision 1df5c943439b050dbc34e7a1c88c4d8ec90d26b5
  llvm revision 1df5c943439b050dbc34e7a1c88c4d8ec90d26b5
Setting up remote platform 'remote-linux'
Connecting to remote platform 'remote-linux' at 'connect://jetson-agx-2198.lab.llvm.org:1234'...
Connected.
Setting remote platform working directory to '/home/ubuntu/lldb-tests'...
Skipping the following test categories: ['dsym', 'gmodules', 'debugserver', 'objc', 'lldb-dap']
connect to debug monitor on port 14467 failed, attempt #1 of 20
connect to debug monitor on port 15582 failed, attempt #2 of 20
connect to debug monitor on port 14642 failed, attempt #3 of 20
connect to debug monitor on port 14042 failed, attempt #4 of 20
connect to debug monitor on port 14513 failed, attempt #5 of 20
connect to debug monitor on port 14258 failed, attempt #6 of 20
connect to debug monitor on port 14568 failed, attempt #7 of 20
connect to debug monitor on port 12901 failed, attempt #8 of 20
connect to debug monitor on port 15078 failed, attempt #9 of 20
connect to debug monitor on port 15072 failed, attempt #10 of 20
connect to debug monitor on port 15012 failed, attempt #11 of 20
connect to debug monitor on port 15242 failed, attempt #12 of 20
connect to debug monitor on port 12284 failed, attempt #13 of 20
connect to debug monitor on port 15835 failed, attempt #14 of 20
connect to debug monitor on port 12204 failed, attempt #15 of 20
connect to debug monitor on port 15171 failed, attempt #16 of 20
connect to debug monitor on port 14939 failed, attempt #17 of 20
connect to debug monitor on port 13556 failed, attempt #18 of 20
connect to debug monitor on port 15601 failed, attempt #19 of 20
connect to debug monitor on port 14339 failed, attempt #20 of 20

--

```

</details>

https://github.com/llvm/llvm-project/pull/100608