[llvm] [mlir] [OpenMP][IRBuilder] Handle `target` directives with both `if` & `nowait` (PR #125029)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

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

Full details are available at: https://lab.llvm.org/buildbot/#/builders/190/builds/13812

<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 :: ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
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
+ /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 0x00000001012ed4e0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100eb94e0)
 #1 0x00000001012eb564 llvm::sys::RunSignalHandlers() (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100eb7564)
 #2 0x00000001012edb9c SignalHandler(int) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100eb9b9c)
 #3 0x0000000198d56584 (/usr/lib/system/libsystem_platform.dylib+0x18047a584)
 #4 0x0000000198d2521c (/usr/lib/system/libsystem_pthread.dylib+0x18044921c)
 #5 0x0000000198c4bad0 (/usr/lib/libc++.1.dylib+0x18036fad0)
 #6 0x0000000100e93c8c 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&)::$_45>(void*, llvm::Expected<llvm::DenseMap<llvm::orc::SymbolStringPtr, llvm::orc::ExecutorSymbolDef, llvm::DenseMapInfo<llvm::orc::SymbolStringPtr, void>, llvm::detail::DenseMapPair<llvm::orc::SymbolStringPtr, llvm::orc::ExecutorSymbolDef>>>&) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100a5fc8c)
 #7 0x0000000100e8fa7c llvm::orc::AsynchronousSymbolQuery::handleComplete(llvm::orc::ExecutionSession&)::RunQueryCompleteTask::run() (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100a5ba7c)
 #8 0x0000000100f4c2d8 void* std::__1::__thread_proxy[abi:un170006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, llvm::orc::DynamicThreadPoolTaskDispatcher::dispatch(std::__1::unique_ptr<llvm::orc::Task, std::__1::default_delete<llvm::orc::Task>>)::$_0>>(void*) (/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/lli+0x100b182d8)
 #9 0x0000000198d25f94 (/usr/lib/system/libsystem_pthread.dylib+0x180449f94)
#10 0x0000000198d20d34 (/usr/lib/system/libsystem_pthread.dylib+0x180444d34)
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

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/125029