[msan][NFCI] Add avx512fp16-{arith-intrinsics, arith-vl-intrinsics, intrinsics} tests

[thurstond]

Forked from llvm/test/CodeGen/X86/avx512fp16-{arith-intrinsics, arith-vl-intrinsics, intrinsics}.ll

The tests show that many instructions are handled suboptimally or heuristically, but this commit message is too narrow to contain them.

[github-actions]

✅ With the latest revision this PR passed the undef deprecator.

[llvm-ci]

LLVM Buildbot has detected a new failure on builder llvm-clang-aarch64-darwin running on doug-worker-4 while building llvm at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/190/builds/18707

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli -jit-kind=orc-lazy -compile-threads=2 -thread-entry hello /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll | /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll # RUN: at line 1
+ /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli -jit-kind=orc-lazy -compile-threads=2 -thread-entry hello /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll
+ /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
 #0 0x0000000103d6a780 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100ede780)
 #1 0x0000000103d68804 llvm::sys::RunSignalHandlers() (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100edc804)
 #2 0x0000000103d6ae3c SignalHandler(int, __siginfo*, void*) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100edee3c)
 #3 0x000000018db57584 (/usr/lib/system/libsystem_platform.dylib+0x18047b584)
 #4 0x000000018db2621c (/usr/lib/system/libsystem_pthread.dylib+0x18044a21c)
 #5 0x000000018da4cad0 (/usr/lib/libc++.1.dylib+0x180370ad0)
 #6 0x000000010390bbd4 void llvm::detail::UniqueFunctionBase<void, llvm::Expected<llvm::DenseMap<llvm::orc::SymbolStringPtr, llvm::orc::ExecutorSymbolDef, llvm::DenseMapInfo<llvm::orc::SymbolStringPtr, void>, llvm::detail::DenseMapPair<llvm::orc::SymbolStringPtr, llvm::orc::ExecutorSymbolDef>>>>::CallImpl<llvm::orc::Platform::lookupInitSymbols(llvm::orc::ExecutionSession&, llvm::DenseMap<llvm::orc::JITDylib*, llvm::orc::SymbolLookupSet, llvm::DenseMapInfo<llvm::orc::JITDylib*, void>, llvm::detail::DenseMapPair<llvm::orc::JITDylib*, llvm::orc::SymbolLookupSet>> const&)::$_45>(void*, llvm::Expected<llvm::DenseMap<llvm::orc::SymbolStringPtr, llvm::orc::ExecutorSymbolDef, llvm::DenseMapInfo<llvm::orc::SymbolStringPtr, void>, llvm::detail::DenseMapPair<llvm::orc::SymbolStringPtr, llvm::orc::ExecutorSymbolDef>>>&) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100a7fbd4)
 #7 0x0000000103907808 llvm::orc::AsynchronousSymbolQuery::handleComplete(llvm::orc::ExecutionSession&)::RunQueryCompleteTask::run() (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100a7b808)
 #8 0x00000001039c3a68 void* std::__1::__thread_proxy[abi:un170006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, llvm::orc::DynamicThreadPoolTaskDispatcher::dispatch(std::__1::unique_ptr<llvm::orc::Task, std::__1::default_delete<llvm::orc::Task>>)::$_0>>(void*) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100b37a68)
 #9 0x000000018db26f94 (/usr/lib/system/libsystem_pthread.dylib+0x18044af94)
#10 0x000000018db21d34 (/usr/lib/system/libsystem_pthread.dylib+0x180445d34)
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll

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