[OpenMP] Create custom state machines for generic target regions

[jdoerfert]

Summary

In the spirit of TRegions [0], this patch creates a custom state
machine for a generic target region based on the potentially called
parallel regions.

The code analysis is done interprocedurally via an abstract attribute
(AAKernelInfo). All outermost parallel regions are collected and we
check if there might be unknown outermost parallel regions for which
we need an indirect call. Other AAKernelInfo extensions are expected.

[0] https://link.springer.com/chapter/10.1007/978-3-030-28596-8_11

[jdoerfert]

NOTE: tests are coming soon.

[jdoerfert]

Fix porting mistakes

[jdoerfert]

Add comments and tests

[jdoerfert]

FWIW, here is what clang currently generates: https://godbolt.org/z/ncWq8f437
With these two patches the result is better in basically every case except the last where there is no actual improvement to be made.

[jdoerfert]

Rebase

[jdoerfert]

Update tests with --function-signature to avoid check-label matching calls

[ggeorgakoudis]

LG, some remarks

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

510

Nit, concatenation?

613

Assertion?

687

skeleton

[ggeorgakoudis]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

497

Is equality comparison enough for ParallelRegions or should we change ParallelRegions refer to same function? I guess size equality should be enough since we only add ParallelRegions, but still checking.

[jdoerfert]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

497

I will check the content, it should not matter how we use it but you're right, better to plan for the future.

[jdoerfert]

Addressed comments
Also moved logic from the AAKernelInfoFunction::updateImpl to
AAKernelInfoCallSite::initialize as it looks cleaner to fix the
state of runtime calls right away.

[jdoerfert]

[Wrong review -.- ]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

510

It won't always be described properly by "concatenation". Already the |= part is on the border, once we do SPMD detection there will be a &= as well.

[jdoerfert]

ping?

[ggeorgakoudis]

LGTM, minor comment, fix tests?

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

795

Remove dump()?

[jdoerfert]

Rebase

[jdoerfert]

Update test and check for internalized functions too.

[jdoerfert]

Track unknown parallel calls and add remarks for the state machine

[jdoerfert]

rebase, remarks, and more tests

[jhuber6]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

2972

I think it should be clear that the optimization pass changed something. I feel just saying "Is executed" is a little ambiguous to what actually happened.

2996

Should this be an analysis remark? It pairs with the analysis remarks below.

[jdoerfert]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

2972

sure.

2996

this is the matching remark to the ones above. Why would we make one transformation and the other one analysis, this is describing the transformation as the other two are.

[jdoerfert]

Use a proper state to track unknown and known reached parallel regions.

[tianshilei1992]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

2935

Is it good to return ahead of time? In later patches we also create AAKernelInfoFunction for "regular" functions.

[jdoerfert]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

2935

It is good to keep control flow simple. Later, as needed, we can have an initializeKernel and initializeNonKernel, for example.

[tianshilei1992]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

461

[tianshilei1992]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

467

If the state is invalid or in pessimistic state, do we want to clear the set?

[jdoerfert]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

461

size_t is probably the worst, but sure.

467

no, we want the content to emit remarks.

[JonChesterfield]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

2971

I'm seeing this assert fire. The kernel contains both the init and deinit calls, but the InitRFI/DeinitRFI for each use doesn't see any uses, so StoreCallBase isn't called, and nothing is assumed to Storage. Kernel otherwise looks uninteresting, run into while trying to track down another bug.

For my reference, issue_001.c from aomp, debug clang build at trunk today, invoked as:

clang -O2 -fopenmp -fopenmp-targets=amdgcn-amd-amdhsa -Xopenmp-target=amdgcn-amd-amdhsa -march=gfx906 issue_001.c -o issue_001
gets bitcode corruption, invalid record

If passed -openmp-opt-disable=true, no corruption seen. If that is used to extract amdgpu bitcode which is fed back into opt, this assert trips.

[jdoerfert]

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

2971

Can you emit the IR (module) before openmp-opt?

llvm/lib/Transforms/IPO/OpenMPOpt.cpp

 #include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/CallGraphSCCPass.h"
 #include "llvm/Analysis/OptimizationRemarkEmitter.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/Frontend/OpenMP/OMPConstants.h"
 #include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
+#include "llvm/IR/Assumptions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/IntrinsicsAMDGPU.h"
 #include "llvm/IR/IntrinsicsNVPTX.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Transforms/IPO.h"
 #include "llvm/Transforms/IPO/Attributor.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"

 STATISTIC(NumOpenMPParallelRegionsDeleted,
           "Number of OpenMP parallel regions deleted");
 STATISTIC(NumOpenMPRuntimeFunctionsIdentified,
           "Number of OpenMP runtime functions identified");
 STATISTIC(NumOpenMPRuntimeFunctionUsesIdentified,
           "Number of OpenMP runtime function uses identified");
 STATISTIC(NumOpenMPTargetRegionKernels,
           "Number of OpenMP target region entry points (=kernels) identified");
+STATISTIC(NumOpenMPTargetRegionKernelsCustomStateMachine,
+          "Number of OpenMP target region entry points (=kernels) executed in "
+          "generic-mode with customized state machines");
 STATISTIC(
     NumOpenMPParallelRegionsReplacedInGPUStateMachine,
     "Number of OpenMP parallel regions replaced with ID in GPU state machines");
 STATISTIC(NumOpenMPParallelRegionsMerged,
           "Number of OpenMP parallel regions merged");
 
 #if !defined(NDEBUG)
 static constexpr auto TAG = "[" DEBUG_TYPE "]";
void foreachUse(function_ref<bool(Use &, Function &)> CB, Function *F) {
         UV.pop_back();
       }
     }
 
   private:
     /// Map from functions to all uses of this runtime function contained in
     /// them.
     DenseMap<Function *, std::shared_ptr<UseVector>> UsesMap;
+
+  public:
+    /// Iterators for the uses of this runtime function.
+    decltype(UsesMap)::iterator begin() { return UsesMap.begin(); }
+    decltype(UsesMap)::iterator end() { return UsesMap.end(); }
   };
 
   /// An OpenMP-IR-Builder instance
   OpenMPIRBuilder OMPBuilder;
 
   /// Map from runtime function kind to the runtime function description.
   EnumeratedArray<RuntimeFunctionInfo, RuntimeFunction,
                   RuntimeFunction::OMPRTL___last>
       RFIs;
 
+  /// Map from function declarations/definitions to their runtime enum type.
+  DenseMap<Function *, RuntimeFunction> RuntimeFunctionIDMap;
+
   /// Map from ICV kind to the ICV description.
   EnumeratedArray<InternalControlVarInfo, InternalControlVar,
                   InternalControlVar::ICV___last>
       ICVs;
 
   /// Helper to initialize all internal control variable information for those
   /// defined in OMPKinds.def.
   void initializeInternalControlVars() {
#define OMP_STRUCT_TYPE(VarName, ...)                                          \
   PointerType *VarName##Ptr = OMPBuilder.VarName##Ptr;                         \
   (void)VarName##Ptr;
 
 #define OMP_RTL(_Enum, _Name, _IsVarArg, _ReturnType, ...)                     \
   {                                                                            \
     SmallVector<Type *, 8> ArgsTypes({__VA_ARGS__});                           \
     Function *F = M.getFunction(_Name);                                        \
     if (declMatchesRTFTypes(F, OMPBuilder._ReturnType, ArgsTypes)) {           \
+      RuntimeFunctionIDMap[F] = _Enum;                                         \
       auto &RFI = RFIs[_Enum];                                                 \
       RFI.Kind = _Enum;                                                        \
       RFI.Name = _Name;                                                        \
       RFI.IsVarArg = _IsVarArg;                                                \
       RFI.ReturnType = OMPBuilder._ReturnType;                                 \
       RFI.ArgumentTypes = std::move(ArgsTypes);                                \
       RFI.Declaration = F;                                                     \
       unsigned NumUses = collectUses(RFI);                                     \
#include "llvm/Frontend/OpenMP/OMPKinds.def"
 
     // TODO: We should attach the attributes defined in OMPKinds.def.
   }
 
   /// Collection of known kernels (\see Kernel) in the module.
   SmallPtrSetImpl<Kernel> &Kernels;
 };
 
+struct KernelInfoState : AbstractState {
+  /// Flag to track if we reached a fixpoint.
+  bool IsAtFixpoint = false;
+
+  /// The parallel regions (identified by the outlined parallel functions) that
+  /// can be reached from the associated function.
+  SmallSetVector<Function *, 2> ParallelRegions;
+
+  /// The __kmpc_target_init call in this kernel, if any. If we find more than
+  /// one we abort as the kernel is malformed.
+  CallBase *KernelInitCB = nullptr;
+
+  /// The __kmpc_target_deinit call in this kernel, if any. If we find more than
+  /// one we abort as the kernel is malformed.
+  CallBase *KernelDeinitCB = nullptr;
+
+  /// Flag to indicate that we may reach a parallel region that is not tracked
+  /// in the ParallelRegions set above.
+  bool MayReachUnknownParallelRegion = false;
+
+  /// Abstract State interface
+  ///{
+
+  KernelInfoState() {}
+  KernelInfoState(bool BestState) {
+    if (!BestState)
+      indicatePessimisticFixpoint();
+  }
+
+  /// See AbstractState::isValidState(...)
+  bool isValidState() const override { return true; }
+
+  /// See AbstractState::isAtFixpoint(...)
+  bool isAtFixpoint() const override { return IsAtFixpoint; }
+
+  /// See AbstractState::indicatePessimisticFixpoint(...)
+  ChangeStatus indicatePessimisticFixpoint() override {
+    IsAtFixpoint = true;
+    MayReachUnknownParallelRegion = true;
+    return ChangeStatus::CHANGED;
+  }
+
+  /// See AbstractState::indicateOptimisticFixpoint(...)
+  ChangeStatus indicateOptimisticFixpoint() override {
+    IsAtFixpoint = true;
+    return ChangeStatus::UNCHANGED;
+  }
+
+  /// Return the assumed state
+  KernelInfoState &getAssumed() { return *this; }
+  const KernelInfoState &getAssumed() const { return *this; }
+
+  bool operator==(const KernelInfoState &RHS) const {
+    if ((MayReachUnknownParallelRegion != RHS.MayReachUnknownParallelRegion))
+      return false;
+    return ParallelRegions.size() == RHS.ParallelRegions.size();
+  }
+
+  /// Return empty set as the best state of potential values.
+  static KernelInfoState getBestState() { return KernelInfoState(true); }
+
+  static KernelInfoState getBestState(KernelInfoState &KIS) {
+    return getBestState();
+  }
+
+  /// Return full set as the worst state of potential values.
+  static KernelInfoState getWorstState() { return KernelInfoState(false); }
+
+  /// "Clamp" this state with \p KIS.
+  KernelInfoState operator^=(const KernelInfoState &KIS) {
+    // Do not merge two different _init and _deinit call sites.
+    if (KIS.KernelInitCB) {
+      if (KernelInitCB && KernelInitCB != KIS.KernelInitCB)
+        indicatePessimisticFixpoint();
+      KernelInitCB = KIS.KernelInitCB;
+    }
+    if (KIS.KernelDeinitCB) {
+      if (KernelDeinitCB && KernelDeinitCB != KIS.KernelDeinitCB)
+        indicatePessimisticFixpoint();
+      KernelDeinitCB = KIS.KernelDeinitCB;
+    }
+    MayReachUnknownParallelRegion |= KIS.MayReachUnknownParallelRegion;
+    ParallelRegions.insert(KIS.ParallelRegions.begin(),
+                           KIS.ParallelRegions.end());
+    return *this;
+  }
+
+  KernelInfoState operator&=(const KernelInfoState &KIS) {
+    return (*this ^= KIS);
+  }
+
+  ///}
+};
+
+struct AAKernelInfo : public StateWrapper<KernelInfoState, AbstractAttribute> {
+  using Base = StateWrapper<KernelInfoState, AbstractAttribute>;
+  AAKernelInfo(const IRPosition &IRP, Attributor &A) : Base(IRP) {}
+
+  /// Modify the IR based on the KernelInfoState as the fixpoint iteration is
+  /// finished now.
+  ChangeStatus manifest(Attributor &A) override {
+    // This is a somewhat unrelated modification. We basically flatten the
+    // function that was reached from a kernel completely by asking the inliner
+    // to inline everything it can. This should live in a separate AA though as
+    // it should also run on parallel regions and other GPU functions.
+    auto CheckCallInst = [&](Instruction &I) {
+      auto &CB = cast<CallBase>(I);
+      CB.addAttribute(AttributeList::FunctionIndex, Attribute::AlwaysInline);
+      return true;
+    };
+    A.checkForAllCallLikeInstructions(CheckCallInst, *this);
+
+    // If we are not looking at a kernel with __kmpc_target_init and
+    // __kmpc_target_deinit call we cannot actually manifest the information.
+    if (!KernelInitCB || !KernelDeinitCB)
+      return ChangeStatus::UNCHANGED;
+
+    const int InitIsSPMDArgNo = 1;
+    const int InitUseStateMachineArgNo = 2;
+
+    // Check if the current configuration is non-SPMD and generic state machine.
+    // If we already have SPMD mode or a custom state machine we do not need to
+    // go any further. If it is anything but a constant something is weird and
+    // we give up.
+    ConstantInt *UseStateMachine = dyn_cast<ConstantInt>(
+        KernelInitCB->getArgOperand(InitUseStateMachineArgNo));
+    ConstantInt *IsSPMD =
+        dyn_cast<ConstantInt>(KernelInitCB->getArgOperand(InitIsSPMDArgNo));
+
+    // If we are stuck with generic mode, try to create a custom device (=GPU)
+    // state machine which is specialized for the parallel regions that are
+    // reachable by the kernel.
+    if (!UseStateMachine || UseStateMachine->isZero() || !IsSPMD ||
+        !IsSPMD->isZero()) {
+      return ChangeStatus::UNCHANGED;
+    }
+
+    // First, indicate we use a custom state machine now.
+    auto &Ctx = getAnchorValue().getContext();
+    auto *FalseVal = ConstantInt::getBool(Ctx, 0);
+    A.changeUseAfterManifest(
+        KernelInitCB->getArgOperandUse(InitUseStateMachineArgNo), *FalseVal);
+
+    // Keep track in the statistics of our new shiny custom state machine.
+    ++NumOpenMPTargetRegionKernelsCustomStateMachine;
+
+    // If we don't actually need a state machine we are done here. This can
+    // happen if there simply are no parallel regions. In the resulting kernel
+    // all worker threads will simply exit right away, leaving the main thread
+    // to do the work alone.
+    if (!MayReachUnknownParallelRegion && ParallelRegions.empty())
+      return ChangeStatus::CHANGED;
+
+    // Create all the blocks:
+    //
+    //                       InitCB = __kmpc_target_init(...)
+    //                       bool IsWorker = InitCB >= 0;
+    //                       if (IsWorker) {
+    // SMBeginBB:               __kmpc_barrier_simple_spmd(...);
+    //                         void *WorkFn;
+    //                         bool Active = __kmpc_kernel_parallel(&WorkFn);
+    //                         if (!WorkFn) return;
+    // SMIsActiveCheckBB:       if (Active) {
+    // SMIfCascadeCurrentBB:      if      (WorkFn == <ParFn0>)
+    //                              ParFn0(...);
+    // SMIfCascadeCurrentBB:      else if (WorkFn == <ParFn1>)
+    //                              ParFn1(...);
+    //                            ...
+    // SMIfCascadeCurrentBB:      else
+    //                              ((WorkFnTy*)WorkFn)(...);
+    // SMEndParallelBB:           __kmpc_kernel_end_parallel(...);
+    //                          }
+    // SMDoneBB:                __kmpc_barrier_simple_spmd(...);
+    //                          goto SMBeginBB;
+    //                       }
+    // UserCodeEntryBB:      // user code
+    //                       __kmpc_target_deinit(...)
+    //
+    Function *Kernel = getAssociatedFunction();
+    assert(Kernel && "Expected an associated function!");
+
+    BasicBlock *InitBB = KernelInitCB->getParent();
+    BasicBlock *UserCodeEntryBB = InitBB->splitBasicBlock(
+        KernelInitCB->getNextNode(), "thread.user_code.check");
+    BasicBlock *StateMachineBeginBB = BasicBlock::Create(
+        Ctx, "worker_state_machine.begin", Kernel, UserCodeEntryBB);
+    BasicBlock *StateMachineFinishedBB = BasicBlock::Create(
+        Ctx, "worker_state_machine.finished", Kernel, UserCodeEntryBB);
+    BasicBlock *StateMachineIsActiveCheckBB = BasicBlock::Create(
+        Ctx, "worker_state_machine.is_active.check", Kernel, UserCodeEntryBB);
+    BasicBlock *StateMachineIfCascadeCurrentBB =
+        BasicBlock::Create(Ctx, "worker_state_machine.parallel_region.check",
+                           Kernel, UserCodeEntryBB);
+    BasicBlock *StateMachineEndParallelBB =
+        BasicBlock::Create(Ctx, "worker_state_machine.parallel_region.end",
+                           Kernel, UserCodeEntryBB);
+    BasicBlock *StateMachineDoneBarrierBB = BasicBlock::Create(
+        Ctx, "worker_state_machine.done.barrier", Kernel, UserCodeEntryBB);
+
+    ReturnInst::Create(Ctx, StateMachineFinishedBB);
+
+    InitBB->getTerminator()->eraseFromParent();
+    Value *IsWorker =
+        ICmpInst::Create(ICmpInst::ICmp, llvm::CmpInst::ICMP_NE, KernelInitCB,
+                         ConstantInt::get(KernelInitCB->getType(), -1),
+                         "thread.is_worker", InitBB);
+    BranchInst::Create(StateMachineBeginBB, UserCodeEntryBB, IsWorker, InitBB);
+
+    // Create local storage for the work function pointer.
+    Type *VoidPtrTy = Type::getInt8PtrTy(Ctx);
+    AllocaInst *WorkFnAI = new AllocaInst(VoidPtrTy, 0, "worker.work_fn.addr",
+                                          &Kernel->getEntryBlock().front());
+
+    auto &OMPInfoCache = static_cast<OMPInformationCache &>(A.getInfoCache());
+    OMPInfoCache.OMPBuilder.updateToLocation(IRBuilder<>::InsertPoint(
+        StateMachineBeginBB, StateMachineBeginBB->end()));
+
+    Value *Ident = KernelInitCB->getArgOperand(0);
+    Value *GTid = KernelInitCB;
+
+    Module &M = *Kernel->getParent();
+    FunctionCallee BarrierFn =
+        OMPInfoCache.OMPBuilder.getOrCreateRuntimeFunction(
+            M, OMPRTL___kmpc_barrier_simple_spmd);
+    CallInst::Create(BarrierFn, {Ident, GTid}, "", StateMachineBeginBB);
+
+    FunctionCallee KernelParallelFn =
+        OMPInfoCache.OMPBuilder.getOrCreateRuntimeFunction(
+            M, OMPRTL___kmpc_kernel_parallel);
+    Value *IsActiveWorker = CallInst::Create(
+        KernelParallelFn, {WorkFnAI}, "worker.is_active", StateMachineBeginBB);
+    Value *WorkFn = new LoadInst(VoidPtrTy, WorkFnAI, "worker.work_fn",
+                                 StateMachineBeginBB);
+
+    FunctionType *ParallelRegionFnTy = FunctionType::get(
+        Type::getVoidTy(Ctx), {Type::getInt16Ty(Ctx), Type::getInt32Ty(Ctx)},
+        false);
+    Value *WorkFnCast = BitCastInst::CreatePointerBitCastOrAddrSpaceCast(
+        WorkFn, ParallelRegionFnTy->getPointerTo(), "worker.work_fn.addr_cast",
+        StateMachineBeginBB);
+
+    Value *IsDone = ICmpInst::Create(ICmpInst::ICmp, llvm::CmpInst::ICMP_EQ,
+                                     WorkFn, Constant::getNullValue(VoidPtrTy),
+                                     "worker.is_done", StateMachineBeginBB);
+    BranchInst::Create(StateMachineFinishedBB, StateMachineIsActiveCheckBB,
+                       IsDone, StateMachineBeginBB);
+
+    BranchInst::Create(StateMachineIfCascadeCurrentBB,
+                       StateMachineDoneBarrierBB, IsActiveWorker,
+                       StateMachineIsActiveCheckBB);
+
+    Value *ZeroArg =
+        Constant::getNullValue(ParallelRegionFnTy->getParamType(0));
+
+    // Now that we have most of the CFG skeleton it is time for the if-cascade
+    // that checks the function pointer we got from the runtime against the
+    // parallel regions we expect, if there are any.
+    for (int i = 0, e = ParallelRegions.size(); i < e; ++i) {
+      auto *ParallelRegion = ParallelRegions[i];
+      BasicBlock *PRExecuteBB = BasicBlock::Create(
+          Ctx, "worker_state_machine.parallel_region.execute", Kernel,
+          StateMachineEndParallelBB);
+      CallInst::Create(ParallelRegion, {ZeroArg, GTid}, "", PRExecuteBB);
+      BranchInst::Create(StateMachineEndParallelBB, PRExecuteBB);
+
+      BasicBlock *PRNextBB =
+          BasicBlock::Create(Ctx, "worker_state_machine.parallel_region.check",
+                             Kernel, StateMachineEndParallelBB);
+
+      // Check if we need to compare the pointer at all or if we can just
+      // call the parallel region function.
+      Value *IsPR;
+      if (i + 1 < e || MayReachUnknownParallelRegion)
+        IsPR = ICmpInst::Create(
+            ICmpInst::ICmp, llvm::CmpInst::ICMP_EQ, WorkFnCast, ParallelRegion,
+            "worker.check_parallel_region", StateMachineIfCascadeCurrentBB);
+      else
+        IsPR = ConstantInt::getTrue(Ctx);
+
+      BranchInst::Create(PRExecuteBB, PRNextBB, IsPR,
+                         StateMachineIfCascadeCurrentBB);
+      StateMachineIfCascadeCurrentBB = PRNextBB;
+    }
+
+    // At the end of the if-cascade we place the indirect function pointer call
+    // in case we might need it, that is if there can be parallel regions we
+    // have not handled in the if-cascade above.
+    if (MayReachUnknownParallelRegion) {
+      StateMachineIfCascadeCurrentBB->setName(
+          "worker_state_machine.parallel_region.fallback.execute");
+      CallInst::Create(ParallelRegionFnTy, WorkFnCast, {ZeroArg, GTid}, "",
+                       StateMachineIfCascadeCurrentBB);
+    }
+    BranchInst::Create(StateMachineEndParallelBB,
+                       StateMachineIfCascadeCurrentBB);
+
+    CallInst::Create(OMPInfoCache.OMPBuilder.getOrCreateRuntimeFunction(
+                         M, OMPRTL___kmpc_kernel_end_parallel),
+                     {}, "", StateMachineEndParallelBB);
+    BranchInst::Create(StateMachineDoneBarrierBB, StateMachineEndParallelBB);
+
+    CallInst::Create(BarrierFn, {Ident, GTid}, "", StateMachineDoneBarrierBB);
+    BranchInst::Create(StateMachineBeginBB, StateMachineDoneBarrierBB);
+
+    return ChangeStatus::CHANGED;
+  }
+
+  /// Statistics are tracked as part of manifest for now.
+  void trackStatistics() const override {}
+
+  /// See AbstractAttribute::getAsStr()
+  const std::string getAsStr() const override {
+    if (!isValidState())
+      return "<invalid>";
+    return std::string("#PR: ") + std::to_string(ParallelRegions.size()) +
+           (MayReachUnknownParallelRegion ? " + Unknown PR" : "");
+  }
+
+  /// Create an abstract attribute biew for the position \p IRP.
+  static AAKernelInfo &createForPosition(const IRPosition &IRP, Attributor &A);
+
+  /// See AbstractAttribute::getName()
+  const std::string getName() const override { return "AAKernelInfo"; }
+
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AAKernelInfo
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
+  static const char ID;
+};
+
+/// The function kernel info abstract attribute, basically, what can we say
+/// about a function with regards to the KernelInfoState.
+struct AAKernelInfoFunction : AAKernelInfo {
+  AAKernelInfoFunction(const IRPosition &IRP, Attributor &A)
+      : AAKernelInfo(IRP, A) {}
+
+  /// Fixpoint iteration update function. Will be called every time a dependence
+  /// changed its state (and in the beginning).
+  ChangeStatus updateImpl(Attributor &A) override {
+    KernelInfoState StateBefore = getState();
+
+    // Callback to check a call instruction.
+    auto CheckCallInst = [&](Instruction &I) {
+      auto &CB = cast<CallBase>(I);
+      Function *Callee = CB.getCalledFunction();
+      if (Callee) {
+        auto &CBAA = A.getAAFor<AAKernelInfo>(
+            *this, IRPosition::callsite_function(CB), DepClassTy::REQUIRED);
+        CBAA.dump();
+        if (CBAA.getState().isValidState()) {
+          getState() ^= CBAA.getState();
+          return true;
+        }
+      }
+
+      // The callee is not known, not ipo-amendable (e.g., due to linkage), or
+      // we can for some other reason not analyze it. If we cannot gather
+      // information, e.g., the state of the AAKernelInfo we got is invalid, we
+      // don't have to completely give up here. It basically means we have no
+      // idea what the effects of the call might be, for now the worst that can
+      // happen are unknown parallel regions hide in the callee.
+      MayReachUnknownParallelRegion = true;
+      return true;
+    };
+
+    if (!A.checkForAllCallLikeInstructions(CheckCallInst, *this))
+      return indicatePessimisticFixpoint();
+
+    return StateBefore == getState() ? ChangeStatus::UNCHANGED
+                                     : ChangeStatus::CHANGED;
+  }
+};
+
+/// The call site kernel info abstract attribute, basically, what can we say
+/// about a call site with regards to the KernelInfoState. For now this simply
+/// forwards the information from the callee.
+struct AAKernelInfoCallSite : AAKernelInfo {
+  AAKernelInfoCallSite(const IRPosition &IRP, Attributor &A)
+      : AAKernelInfo(IRP, A) {}
+
+  /// See AbstractAttribute::initialize(...).
+  void initialize(Attributor &A) override {
+    AAKernelInfo::initialize(A);
+
+    CallBase &CB = cast<CallBase>(getAssociatedValue());
+    Function *Callee = getAssociatedFunction();
+
+    // First weed out calls we do not care about, that is readonly/readnone
+    // calls, intrinsics, and "no_openmp" calls. Neither of these can reach a
+    // parallel region or anything else we are looking for.
+    if (!CB.mayWriteToMemory() || isa<IntrinsicInst>(CB) ||
+        (Callee &&
+         hasAssumption(*Callee, KnownAssumptionString("omp_no_openmp")))) {
+      indicateOptimisticFixpoint();
+      return;
+    }
+
+    // Next we check if we know the callee. If it is a known OpenMP function
+    // we will handle them explicitly in the switch below. If it is not, we
+    // will use an AAKernelInfo object on the callee to gather information and
+    // merge that into the current state. The latter happens in the updateImpl.
+    auto &OMPInfoCache = static_cast<OMPInformationCache &>(A.getInfoCache());
+    const auto &It = OMPInfoCache.RuntimeFunctionIDMap.find(Callee);
+    if (It == OMPInfoCache.RuntimeFunctionIDMap.end()) {
+      // Unknown caller or declarations are not analyzable, we give up.
+      if (!Callee || !A.isFunctionIPOAmendable(*Callee))
+        indicatePessimisticFixpoint();
+      return;
+    }
+
+    const unsigned int WrapperFunctionArgNo = 6;
+    RuntimeFunction RF = It->getSecond();
+    switch (RF) {
+    case OMPRTL___kmpc_target_init:
+      KernelInitCB = &CB;
+      break;
+    case OMPRTL___kmpc_target_deinit:
+      KernelDeinitCB = &CB;
+      break;
+    case OMPRTL___kmpc_parallel_51:
+      if (auto *ParallelRegion = dyn_cast<Function>(
+              CB.getArgOperand(WrapperFunctionArgNo)->stripPointerCasts())) {
+        ParallelRegions.insert(ParallelRegion);
+        break;
+      }
+      // The condition above should usually get the parallel region function
+      // pointer and record it. In the off chance it doesn't we assume the
+      // worst.
+      MayReachUnknownParallelRegion = true;
+      break;
+    case OMPRTL___kmpc_omp_task:
+      // We do not look into tasks right now, just give up.
+      MayReachUnknownParallelRegion = true;
+      break;
+    default:
+      break;
+    }
+    // All other OpenMP runtime calls will not reach parallel regions so they
+    // can be safely ignored for now. Since it is a known OpenMP runtime call we
+    // have now modeled all effects and there is no need for any update.
+    indicateOptimisticFixpoint();
+  }
+
+  ChangeStatus updateImpl(Attributor &A) override {
+    // TODO: Once we have call site specific value information we can provide
+    //       call site specific liveness information and then it makes
+    //       sense to specialize attributes for call sites arguments instead of
+    //       redirecting requests to the callee argument.
+    Function *F = getAssociatedFunction();
+    const IRPosition &FnPos = IRPosition::function(*F);
+    auto &FnAA = A.getAAFor<AAKernelInfo>(*this, FnPos, DepClassTy::REQUIRED);
+    if (getState() == FnAA.getState())
+      return ChangeStatus::UNCHANGED;
+    getState() = FnAA.getState();
+    return ChangeStatus::CHANGED;
+  }
+};
+
 /// Used to map the values physically (in the IR) stored in an offload
 /// array, to a vector in memory.
 struct OffloadArray {
   /// Physical array (in the IR).
   AllocaInst *Array = nullptr;
   /// Mapped values.
   SmallVector<Value *, 8> StoredValues;
   /// Last stores made in the offload array.
bool run(bool IsModulePass) {
 
     bool Changed = false;
 
     LLVM_DEBUG(dbgs() << TAG << "Run on SCC with " << SCC.size()
                       << " functions in a slice with "
                       << OMPInfoCache.ModuleSlice.size() << " functions\n");
 
     if (IsModulePass) {
-      Changed |= runAttributor();
+      Changed |= runAttributor(IsModulePass);
 
       if (remarksEnabled())
         analysisGlobalization();
     } else {
       if (PrintICVValues)
         printICVs();
       if (PrintOpenMPKernels)
         printKernels();
 
-      Changed |= rewriteDeviceCodeStateMachine();
-
-      Changed |= runAttributor();
+      Changed |= runAttributor(IsModulePass);
 
       // Recollect uses, in case Attributor deleted any.
       OMPInfoCache.recollectUses();
 
       Changed |= deleteParallelRegions();
+      Changed |= rewriteDeviceCodeStateMachine();
+
       if (HideMemoryTransferLatency)
         Changed |= hideMemTransfersLatency();
       Changed |= deduplicateRuntimeCalls();
       if (EnableParallelRegionMerging) {
         if (mergeParallelRegions()) {
           deduplicateRuntimeCalls();
           Changed = true;
         }
private:
 
   /// OpenMP-specific information cache. Also Used for Attributor runs.
   OMPInformationCache &OMPInfoCache;
 
   /// Attributor instance.
   Attributor &A;
 
   /// Helper function to run Attributor on SCC.
-  bool runAttributor() {
+  bool runAttributor(bool IsModulePass) {
     if (SCC.empty())
       return false;
 
-    registerAAs();
+    registerAAs(IsModulePass);
 
     ChangeStatus Changed = A.run();
 
     LLVM_DEBUG(dbgs() << "[Attributor] Done with " << SCC.size()
                       << " functions, result: " << Changed << ".\n");
 
     return Changed == ChangeStatus::CHANGED;
   }
 
   /// Populate the Attributor with abstract attribute opportunities in the
   /// function.
-  void registerAAs() {
+  void registerAAs(bool IsModulePass) {
     if (SCC.empty())
       return;
 
     // Create CallSite AA for all Getters.
     for (int Idx = 0; Idx < OMPInfoCache.ICVs.size() - 1; ++Idx) {
       auto ICVInfo = OMPInfoCache.ICVs[static_cast<InternalControlVar>(Idx)];
 
       auto &GetterRFI = OMPInfoCache.RFIs[ICVInfo.Getter];
for (int Idx = 0; Idx < OMPInfoCache.ICVs.size() - 1; ++Idx) {
 
       GetterRFI.foreachUse(SCC, CreateAA);
     }
 
     for (auto &F : M) {
       if (!F.isDeclaration())
         A.getOrCreateAAFor<AAExecutionDomain>(IRPosition::function(F));
     }
+    if (IsModulePass) {
+      for (Function *Kernel : OMPInfoCache.Kernels)
+        A.getOrCreateAAFor<AAKernelInfo>(IRPosition::function(*Kernel));
+    }
   }
 };
 
 Kernel OpenMPOpt::getUniqueKernelFor(Function &F) {
   if (!OMPInfoCache.ModuleSlice.count(&F))
     return nullptr;
 
   // Use a scope to keep the lifetime of the CachedKernel short.
if (!KernelParallelUse)
       emitRemark<OptimizationRemarkAnalysis>(F, "OpenMPParallelRegionInNonSPMD",
                                              Remark);
     }
 
     // If this ever hits, we should investigate.
     // TODO: Checking the number of uses is not a necessary restriction and
     // should be lifted.
     if (UnknownUse || NumDirectCalls != 1 ||
-        ToBeReplacedStateMachineUses.size() != 2) {
+        ToBeReplacedStateMachineUses.size() > 2) {
       {
         auto Remark = [&](OptimizationRemarkAnalysis ORA) {
           return ORA << "Parallel region is used in "
                      << (UnknownUse ? "unknown" : "unexpected")
                      << " ways; will not attempt to rewrite the state machine.";
         };
         emitRemark<OptimizationRemarkAnalysis>(
             F, "OpenMPParallelRegionInNonSPMD", Remark);
ChangeStatus AAExecutionDomainFunction::updateImpl(Attributor &A) {
   return (NumSingleThreadedBBs == SingleThreadedBBs.size())
              ? ChangeStatus::UNCHANGED
              : ChangeStatus::CHANGED;
 }
 
 } // namespace
 
 const char AAICVTracker::ID = 0;
+const char AAKernelInfo::ID = 0;
 const char AAExecutionDomain::ID = 0;
 
 AAICVTracker &AAICVTracker::createForPosition(const IRPosition &IRP,
                                               Attributor &A) {
   AAICVTracker *AA = nullptr;
   switch (IRP.getPositionKind()) {
   case IRPosition::IRP_INVALID:
   case IRPosition::IRP_FLOAT:
AAExecutionDomain &AAExecutionDomain::createForPosition(const IRPosition &IRP,
   case IRPosition::IRP_CALL_SITE:
     llvm_unreachable(
         "AAExecutionDomain can only be created for function position!");
   case IRPosition::IRP_FUNCTION:
     AA = new (A.Allocator) AAExecutionDomainFunction(IRP, A);
     break;
   }
 
   return *AA;
 }
 
+AAKernelInfo &AAKernelInfo::createForPosition(const IRPosition &IRP,
+                                              Attributor &A) {
+  AAKernelInfo *AA = nullptr;
+  switch (IRP.getPositionKind()) {
+  case IRPosition::IRP_INVALID:
+  case IRPosition::IRP_FLOAT:
+  case IRPosition::IRP_ARGUMENT:
+  case IRPosition::IRP_RETURNED:
+  case IRPosition::IRP_CALL_SITE_RETURNED:
+  case IRPosition::IRP_CALL_SITE_ARGUMENT:
+    llvm_unreachable("KernelInfo can only be created for function position!");
+  case IRPosition::IRP_CALL_SITE:
+    AA = new (A.Allocator) AAKernelInfoCallSite(IRP, A);
+    break;
+  case IRPosition::IRP_FUNCTION:
+    AA = new (A.Allocator) AAKernelInfoFunction(IRP, A);
+    break;
+  }
+
+  return *AA;
+}
+
 PreservedAnalyses OpenMPOptPass::run(Module &M, ModuleAnalysisManager &AM) {
   if (!containsOpenMP(M, OMPInModule))
     return PreservedAnalyses::all();
 
   if (DisableOpenMPOptimizations)
     return PreservedAnalyses::all();
 
   // Look at every function definition in the Module.
   SmallVector<Function *, 16> SCC;
   for (Function &Fn : M)
     if (!Fn.isDeclaration())
       SCC.push_back(&Fn);
 
   if (SCC.empty())
     return PreservedAnalyses::all();
 
   FunctionAnalysisManager &FAM =
       AM.getResult<FunctionAnalysisManagerModuleProxy>(M).getManager();
 
   AnalysisGetter AG(FAM);
 
   auto OREGetter = [&FAM](Function *F) -> OptimizationRemarkEmitter & {
     return FAM.getResult<OptimizationRemarkEmitterAnalysis>(*F);
   };
 
   BumpPtrAllocator Allocator;
   CallGraphUpdater CGUpdater;
 
   SetVector<Function *> Functions(SCC.begin(), SCC.end());
   OMPInformationCache InfoCache(M, AG, Allocator, /*CGSCC*/ Functions,
                                 OMPInModule.getKernels());
 
-  Attributor A(Functions, InfoCache, CGUpdater);
+  Attributor A(Functions, InfoCache, CGUpdater, nullptr, false);
 
   OpenMPOpt OMPOpt(SCC, CGUpdater, OREGetter, InfoCache, A);
   bool Changed = OMPOpt.run(true);
   if (Changed)
     return PreservedAnalyses::none();
 
   return PreservedAnalyses::all();
 }
 
 PreservedAnalyses OpenMPOptCGSCCPass::run(LazyCallGraph::SCC &C,
                                           CGSCCAnalysisManager &AM,
                                           LazyCallGraph &CG,

llvm/test/Transforms/OpenMP/custom_state_machines.ll

+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
+; RUN: opt -S -passes=openmp-opt < %s | FileCheck %s
+
+;; void p0(void);
+;; void p1(void);
+;; void unknown(void);
+;; void unknown_pure(void) __attribute__((pure));
+;; void unknown_no_openmp(void) __attribute__((assume("omp_no_openmp")));
+;;
+;; int G;
+;; void no_parallel_region_in_here(void) {
+;; #pragma omp single
+;;   G = 0;
+;; }
+;;
+;; void no_state_machine_needed() {
+;; #pragma omp target teams
+;;   no_parallel_region_in_here();
+;; }
+;;
+;; void simple_state_machine() {
+;; #pragma omp target teams
+;;   {
+;; #pragma omp parallel
+;;     { p0(); }
+;;     no_parallel_region_in_here();
+;; #pragma omp parallel
+;;     { p1(); }
+;;   }
+;; }
+;;
+;; void simple_state_machine_interprocedural_after(void);
+;; void simple_state_machine_interprocedural_before(void) {
+;; #pragma omp parallel
+;;   { p0(); }
+;; }
+;; void simple_state_machine_interprocedural() {
+;; #pragma omp target teams
+;;   {
+;;     simple_state_machine_interprocedural_before();
+;;     no_parallel_region_in_here();
+;; #pragma omp parallel
+;;     { p1(); }
+;;     simple_state_machine_interprocedural_after();
+;;   }
+;; }
+;; void simple_state_machine_interprocedural_after(void) {
+;; #pragma omp parallel
+;;   { p0(); }
+;; }
+;;
+;; void simple_state_machine_with_fallback() {
+;; #pragma omp target teams
+;;   {
+;; #pragma omp parallel
+;;     { p0(); }
+;;     unknown();
+;; #pragma omp parallel
+;;     { p1(); }
+;;   }
+;; }
+;;
+;; void simple_state_machine_no_openmp_attr() {
+;; #pragma omp target teams
+;;   {
+;; #pragma omp parallel
+;;     { p0(); }
+;;     unknown_no_openmp();
+;; #pragma omp parallel
+;;     { p1(); }
+;;   }
+;; }
+;;
+;; void simple_state_machine_pure() {
+;; #pragma omp target teams
+;;   {
+;; #pragma omp parallel
+;;     { p0(); }
+;;     unknown_pure();
+;; #pragma omp parallel
+;;     { p1(); }
+;;   }
+;; }
+;;
+;; int omp_get_thread_num();
+;; void simple_state_machine_interprocedural_nested_recursive_after(int);
+;; void simple_state_machine_interprocedural_nested_recursive_after_after(void);
+;; void simple_state_machine_interprocedural_nested_recursive() {
+;; #pragma omp target teams
+;;   {
+;;     simple_state_machine_interprocedural_nested_recursive_after(
+;;         omp_get_thread_num());
+;;   }
+;; }
+;;
+;; void simple_state_machine_interprocedural_nested_recursive_after(int a) {
+;;   if (a == 0)
+;;     return;
+;;   simple_state_machine_interprocedural_nested_recursive_after(a - 1);
+;;   simple_state_machine_interprocedural_nested_recursive_after_after();
+;; }
+;; void simple_state_machine_interprocedural_nested_recursive_after_after(void) {
+;; #pragma omp parallel
+;;   { p0(); }
+;; }
+;;
+;; __attribute__((weak)) void weak_callee_empty(void) {}
+;; void no_state_machine_weak_callee() {
+;; #pragma omp target teams
+;;   { weak_callee_empty(); }
+;; }
+
+target triple = "nvptx64"
+
+%struct.ident_t = type { i32, i32, i32, i32, i8* }
+
+@"_openmp_kernel_static_glob_rd$ptr" = internal addrspace(3) global i8* undef
+@0 = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00", align 1
+@1 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @0, i32 0, i32 0) }, align 8
+@__omp_offloading_2c_389eb_no_state_machine_needed_l14_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_simple_state_machine_l19_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_simple_state_machine_interprocedural_l35_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_simple_state_machine_with_fallback_l50_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_simple_state_machine_no_openmp_attr_l61_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_simple_state_machine_pure_l72_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_simple_state_machine_interprocedural_nested_recursive_l86_exec_mode = weak constant i8 1
+@__omp_offloading_2c_389eb_no_state_machine_weak_callee_l106_exec_mode = weak constant i8 1
+@2 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 2, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @0, i32 0, i32 0) }, align 8
+@G = external global i32, align 4
+@3 = private unnamed_addr constant %struct.ident_t { i32 0, i32 322, i32 2, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @0, i32 0, i32 0) }, align 8
[e-mail] = appending global [8 x i8*] [i8* @__omp_offloading_2c_389eb_no_state_machine_needed_l14_exec_mode, i8* @__omp_offloading_2c_389eb_simple_state_machine_l19_exec_mode, i8* @__omp_offloading_2c_389eb_simple_state_machine_interprocedural_l35_exec_mode, i8* @__omp_offloading_2c_389eb_simple_state_machine_with_fallback_l50_exec_mode, i8* @__omp_offloading_2c_389eb_simple_state_machine_no_openmp_attr_l61_exec_mode, i8* @__omp_offloading_2c_389eb_simple_state_machine_pure_l72_exec_mode, i8* @__omp_offloading_2c_389eb_simple_state_machine_interprocedural_nested_recursive_l86_exec_mode, i8* @__omp_offloading_2c_389eb_no_state_machine_weak_callee_l106_exec_mode], section "llvm.metadata"
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; No user code state machine is build because we do not need one.
+define weak void @__omp_offloading_2c_389eb_no_state_machine_needed_l14() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_no_state_machine_needed_l14
+; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1:[0-9]+]], i1 false, i1 false, i1 true) #[[ATTR8:[0-9]+]]
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9:[0-9]+]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+declare i32 @__kmpc_target_init(%struct.ident_t*, i1, i1, i1)
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @no_parallel_region_in_here() #[[ATTR10:[0-9]+]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @no_parallel_region_in_here() #8
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+define hidden void @no_parallel_region_in_here() #1 {
+; CHECK-LABEL: define {{[^@]+}}@no_parallel_region_in_here
+; CHECK-SAME: () #[[ATTR1:[0-9]+]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB2:[0-9]+]]) #[[ATTR9]]
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_single(%struct.ident_t* @[[GLOB2]], i32 [[TMP0]]) #[[ATTR9]]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ne i32 [[TMP1]], 0
+; CHECK-NEXT:    br i1 [[TMP2]], label [[OMP_IF_THEN:%.*]], label [[OMP_IF_END:%.*]]
+; CHECK:       omp_if.then:
+; CHECK-NEXT:    store i32 0, i32* @G, align 4
+; CHECK-NEXT:    call void @__kmpc_end_single(%struct.ident_t* @[[GLOB2]], i32 [[TMP0]]) #[[ATTR9]]
+; CHECK-NEXT:    br label [[OMP_IF_END]]
+; CHECK:       omp_if.end:
+; CHECK-NEXT:    call void @__kmpc_barrier(%struct.ident_t* @[[GLOB3:[0-9]+]], i32 [[TMP0]]) #[[ATTR9]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %0 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2)
+  %1 = call i32 @__kmpc_single(%struct.ident_t* @2, i32 %0)
+  %2 = icmp ne i32 %1, 0
+  br i1 %2, label %omp_if.then, label %omp_if.end
+
+omp_if.then:                                      ; preds = %entry
+  store i32 0, i32* @G, align 4
+  call void @__kmpc_end_single(%struct.ident_t* @2, i32 %0)
+  br label %omp_if.end
+
+omp_if.end:                                       ; preds = %omp_if.then, %entry
+  call void @__kmpc_barrier(%struct.ident_t* @3, i32 %0)
+  ret void
+}
+
+; Function Attrs: nounwind
+declare i32 @__kmpc_global_thread_num(%struct.ident_t*) #2
+
+declare void @__kmpc_target_deinit(%struct.ident_t*, i1, i1)
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A user code state machine is build because we do need one. No fallback and only one pointer comparison are needed.
+define weak void @__omp_offloading_2c_389eb_simple_state_machine_l19() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_simple_state_machine_l19
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__2_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK1:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute:
+; CHECK-NEXT:    call void @__omp_outlined__2_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check1:
+; CHECK-NEXT:    br i1 true, label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE2:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK3:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute2:
+; CHECK-NEXT:    call void @__omp_outlined__3_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.check3:
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__1(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__1(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__1(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__1
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS1:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__2 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__2_wrapper to i8*), i8** noundef [[TMP2]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    call void @no_parallel_region_in_here() #[[ATTR10]]
+; CHECK-NEXT:    [[TMP3:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS1]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__3 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__3_wrapper to i8*), i8** noundef [[TMP3]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %captured_vars_addrs1 = alloca [0 x i8*], align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  %0 = load i32*, i32** %.global_tid..addr, align 8
+  %1 = load i32, i32* %0, align 4
+  %2 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__2 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__2_wrapper to i8*), i8** %2, i64 0)
+  call void @no_parallel_region_in_here() #8
+  %3 = bitcast [0 x i8*]* %captured_vars_addrs1 to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__3 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__3_wrapper to i8*), i8** %3, i64 0)
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__2(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__2
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11:[0-9]+]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent
+declare void @p0() #3
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__2_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__2_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__2(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2:[0-9]+]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__2(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+declare void @__kmpc_get_shared_variables(i8***)
+
+declare void @__kmpc_parallel_51(%struct.ident_t*, i32, i32, i32, i32, i8*, i8*, i8**, i64)
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__3(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__3
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p1() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p1() #8
+  ret void
+}
+
+; Function Attrs: convergent
+declare void @p1() #3
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__3_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__3_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__3(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__3(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A user code state machine is build because we do need one. No fallback and only two pointer comparison are needed.
+define weak void @__omp_offloading_2c_389eb_simple_state_machine_interprocedural_l35() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_simple_state_machine_interprocedural_l35
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__17_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK1:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute:
+; CHECK-NEXT:    call void @__omp_outlined__17_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check1:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION4:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__5_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION4]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE2:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK3:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute2:
+; CHECK-NEXT:    call void @__omp_outlined__5_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.check3:
+; CHECK-NEXT:    br i1 true, label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE5:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK6:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute5:
+; CHECK-NEXT:    call void @__omp_outlined__18_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.check6:
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__4(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__4(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__4(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__4
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @simple_state_machine_interprocedural_before() #[[ATTR10]]
+; CHECK-NEXT:    call void @no_parallel_region_in_here() #[[ATTR10]]
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__5 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__5_wrapper to i8*), i8** noundef [[TMP2]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    call void @simple_state_machine_interprocedural_after() #[[ATTR10]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @simple_state_machine_interprocedural_before() #8
+  call void @no_parallel_region_in_here() #8
+  %0 = load i32*, i32** %.global_tid..addr, align 8
+  %1 = load i32, i32* %0, align 4
+  %2 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__5 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__5_wrapper to i8*), i8** %2, i64 0)
+  call void @simple_state_machine_interprocedural_after() #8
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+define hidden void @simple_state_machine_interprocedural_before() #1 {
+; CHECK-LABEL: define {{[^@]+}}@simple_state_machine_interprocedural_before
+; CHECK-SAME: () #[[ATTR1]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB2]]) #[[ATTR9]]
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* @[[GLOB2]], i32 [[TMP0]], i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__17 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__17_wrapper to i8*), i8** [[TMP1]], i64 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %0 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2)
+  %1 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @2, i32 %0, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__17 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__17_wrapper to i8*), i8** %1, i64 0)
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__5(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__5
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p1() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p1() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__5_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__5_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__5(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__5(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+define hidden void @simple_state_machine_interprocedural_after() #1 {
+; CHECK-LABEL: define {{[^@]+}}@simple_state_machine_interprocedural_after
+; CHECK-SAME: () #[[ATTR1]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB2]]) #[[ATTR9]]
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* @[[GLOB2]], i32 [[TMP0]], i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__18 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__18_wrapper to i8*), i8** [[TMP1]], i64 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %0 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2)
+  %1 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @2, i32 %0, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__18 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__18_wrapper to i8*), i8** %1, i64 0)
+  ret void
+}
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A user code state machine is build because we do need one. A fallback indirect call and only two pointer comparison are needed.
+define weak void @__omp_offloading_2c_389eb_simple_state_machine_with_fallback_l50() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_simple_state_machine_with_fallback_l50
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__7_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK1:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute:
+; CHECK-NEXT:    call void @__omp_outlined__7_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check1:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION4:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__8_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION4]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE2:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_FALLBACK_EXECUTE:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute2:
+; CHECK-NEXT:    call void @__omp_outlined__8_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.fallback.execute:
+; CHECK-NEXT:    call void [[WORKER_WORK_FN_ADDR_CAST]](i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__6(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__6(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__6(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__6
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS1:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__7 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__7_wrapper to i8*), i8** noundef [[TMP2]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    call void @unknown() #[[ATTR12:[0-9]+]]
+; CHECK-NEXT:    [[TMP3:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS1]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__8 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__8_wrapper to i8*), i8** noundef [[TMP3]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %captured_vars_addrs1 = alloca [0 x i8*], align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  %0 = load i32*, i32** %.global_tid..addr, align 8
+  %1 = load i32, i32* %0, align 4
+  %2 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__7 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__7_wrapper to i8*), i8** %2, i64 0)
+  call void @unknown() #8
+  %3 = bitcast [0 x i8*]* %captured_vars_addrs1 to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__8 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__8_wrapper to i8*), i8** %3, i64 0)
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__7(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__7
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__7_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__7_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__7(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__7(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; Function Attrs: convergent
+declare void @unknown() #3
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__8(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__8
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p1() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p1() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__8_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__8_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__8(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__8(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A user code state machine is build because we do need one. No fallback and only one pointer comparison is needed.
+define weak void @__omp_offloading_2c_389eb_simple_state_machine_no_openmp_attr_l61() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_simple_state_machine_no_openmp_attr_l61
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__10_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK1:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute:
+; CHECK-NEXT:    call void @__omp_outlined__10_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check1:
+; CHECK-NEXT:    br i1 true, label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE2:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK3:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute2:
+; CHECK-NEXT:    call void @__omp_outlined__11_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.check3:
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__9(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__9(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__9(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__9
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS1:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__10 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__10_wrapper to i8*), i8** noundef [[TMP2]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    call void @unknown_no_openmp() #[[ATTR13:[0-9]+]]
+; CHECK-NEXT:    [[TMP3:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS1]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__11 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__11_wrapper to i8*), i8** noundef [[TMP3]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %captured_vars_addrs1 = alloca [0 x i8*], align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  %0 = load i32*, i32** %.global_tid..addr, align 8
+  %1 = load i32, i32* %0, align 4
+  %2 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__10 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__10_wrapper to i8*), i8** %2, i64 0)
+  call void @unknown_no_openmp() #9
+  %3 = bitcast [0 x i8*]* %captured_vars_addrs1 to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__11 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__11_wrapper to i8*), i8** %3, i64 0)
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__10(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__10
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__10_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__10_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__10(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__10(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; Function Attrs: convergent
+declare void @unknown_no_openmp() #5
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__11(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__11
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p1() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p1() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__11_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__11_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__11(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__11(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A user code state machine is build because we do need one. No fallback and only one pointer comparison is needed.
+define weak void @__omp_offloading_2c_389eb_simple_state_machine_pure_l72() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_simple_state_machine_pure_l72
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check:
+; CHECK-NEXT:    [[WORKER_CHECK_PARALLEL_REGION:%.*]] = icmp eq void (i16, i32)* [[WORKER_WORK_FN_ADDR_CAST]], @__omp_outlined__13_wrapper
+; CHECK-NEXT:    br i1 [[WORKER_CHECK_PARALLEL_REGION]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK1:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute:
+; CHECK-NEXT:    call void @__omp_outlined__13_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check1:
+; CHECK-NEXT:    br i1 true, label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE2:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK3:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute2:
+; CHECK-NEXT:    call void @__omp_outlined__14_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.check3:
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__12(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__12(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__12(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__12
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS1:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__13 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__13_wrapper to i8*), i8** noundef [[TMP2]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    [[TMP3:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS1]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* noundef @[[GLOB1]], i32 [[TMP1]], i32 noundef 1, i32 noundef -1, i32 noundef -1, i8* noundef bitcast (void (i32*, i32*)* @__omp_outlined__14 to i8*), i8* noundef bitcast (void (i16, i32)* @__omp_outlined__14_wrapper to i8*), i8** noundef [[TMP3]], i64 noundef 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %captured_vars_addrs1 = alloca [0 x i8*], align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  %0 = load i32*, i32** %.global_tid..addr, align 8
+  %1 = load i32, i32* %0, align 4
+  %2 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__13 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__13_wrapper to i8*), i8** %2, i64 0)
+  call void @unknown_pure() #10
+  %3 = bitcast [0 x i8*]* %captured_vars_addrs1 to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @1, i32 %1, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__14 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__14_wrapper to i8*), i8** %3, i64 0)
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__13(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__13
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__13_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__13_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__13(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__13(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; Function Attrs: convergent nounwind readonly willreturn
+declare void @unknown_pure() #6
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__14(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__14
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p1() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p1() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__14_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__14_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__14(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__14(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A user code state machine is build because we do need one. No fallback and no pointer comparison is needed.
+define weak void @__omp_offloading_2c_389eb_simple_state_machine_interprocedural_nested_recursive_l86() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_simple_state_machine_interprocedural_nested_recursive_l86
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check:
+; CHECK-NEXT:    br i1 true, label [[WORKER_STATE_MACHINE_PARALLEL_REGION_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_CHECK1:%.*]]
+; CHECK:       worker_state_machine.parallel_region.execute:
+; CHECK-NEXT:    call void @__omp_outlined__19_wrapper(i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.check1:
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__15(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__15(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__15(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__15
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    [[CALL:%.*]] = call i32 @omp_get_thread_num() #[[ATTR9]]
+; CHECK-NEXT:    call void @simple_state_machine_interprocedural_nested_recursive_after(i32 [[CALL]]) #[[ATTR10]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  %call = call i32 @omp_get_thread_num()
+  call void @simple_state_machine_interprocedural_nested_recursive_after(i32 %call) #8
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+define hidden void @simple_state_machine_interprocedural_nested_recursive_after(i32 %a) #1 {
+; CHECK-LABEL: define {{[^@]+}}@simple_state_machine_interprocedural_nested_recursive_after
+; CHECK-SAME: (i32 [[A:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 [[A]], i32* [[A_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[A_ADDR]], align 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[TMP0]], 0
+; CHECK-NEXT:    br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
+; CHECK:       if.then:
+; CHECK-NEXT:    br label [[RETURN:%.*]]
+; CHECK:       if.end:
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[A_ADDR]], align 4
+; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i32 [[TMP1]], 1
+; CHECK-NEXT:    call void @simple_state_machine_interprocedural_nested_recursive_after(i32 [[SUB]]) #[[ATTR10]]
+; CHECK-NEXT:    call void @simple_state_machine_interprocedural_nested_recursive_after_after() #[[ATTR10]]
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %a.addr = alloca i32, align 4
+  store i32 %a, i32* %a.addr, align 4
+  %0 = load i32, i32* %a.addr, align 4
+  %cmp = icmp eq i32 %0, 0
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  br label %return
+
+if.end:                                           ; preds = %entry
+  %1 = load i32, i32* %a.addr, align 4
+  %sub = sub nsw i32 %1, 1
+  call void @simple_state_machine_interprocedural_nested_recursive_after(i32 %sub) #8
+  call void @simple_state_machine_interprocedural_nested_recursive_after_after() #8
+  br label %return
+
+return:                                           ; preds = %if.end, %if.then
+  ret void
+}
+
+; Function Attrs: convergent
+declare i32 @omp_get_thread_num() #3
+
+; The second to last argument of __kmpc_target_init is is set to false to indicate we do not need the generic runtime state machine.
+; A pretty generic user code state machine is build because we do not know anything about the weak callee.
+define weak void @__omp_offloading_2c_389eb_no_state_machine_weak_callee_l106() #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_offloading_2c_389eb_no_state_machine_weak_callee_l106
+; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR:%.*]] = alloca i8*, align 8
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTTHREADID_TEMP_:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_target_init(%struct.ident_t* @[[GLOB1]], i1 false, i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    [[THREAD_IS_WORKER:%.*]] = icmp ne i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[THREAD_IS_WORKER]], label [[WORKER_STATE_MACHINE_BEGIN:%.*]], label [[THREAD_USER_CODE_CHECK:%.*]]
+; CHECK:       worker_state_machine.begin:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    [[WORKER_IS_ACTIVE:%.*]] = call i1 @__kmpc_kernel_parallel(i8** [[WORKER_WORK_FN_ADDR]])
+; CHECK-NEXT:    [[WORKER_WORK_FN:%.*]] = load i8*, i8** [[WORKER_WORK_FN_ADDR]], align 8
+; CHECK-NEXT:    [[WORKER_WORK_FN_ADDR_CAST:%.*]] = bitcast i8* [[WORKER_WORK_FN]] to void (i16, i32)*
+; CHECK-NEXT:    [[WORKER_IS_DONE:%.*]] = icmp eq i8* [[WORKER_WORK_FN]], null
+; CHECK-NEXT:    br i1 [[WORKER_IS_DONE]], label [[WORKER_STATE_MACHINE_FINISHED:%.*]], label [[WORKER_STATE_MACHINE_IS_ACTIVE_CHECK:%.*]]
+; CHECK:       worker_state_machine.finished:
+; CHECK-NEXT:    ret void
+; CHECK:       worker_state_machine.is_active.check:
+; CHECK-NEXT:    br i1 [[WORKER_IS_ACTIVE]], label [[WORKER_STATE_MACHINE_PARALLEL_REGION_FALLBACK_EXECUTE:%.*]], label [[WORKER_STATE_MACHINE_DONE_BARRIER:%.*]]
+; CHECK:       worker_state_machine.parallel_region.fallback.execute:
+; CHECK-NEXT:    call void [[WORKER_WORK_FN_ADDR_CAST]](i16 0, i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_PARALLEL_REGION_END:%.*]]
+; CHECK:       worker_state_machine.parallel_region.end:
+; CHECK-NEXT:    call void @__kmpc_kernel_end_parallel()
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_DONE_BARRIER]]
+; CHECK:       worker_state_machine.done.barrier:
+; CHECK-NEXT:    call void @__kmpc_barrier_simple_spmd(%struct.ident_t* @[[GLOB1]], i32 [[TMP0]])
+; CHECK-NEXT:    br label [[WORKER_STATE_MACHINE_BEGIN]]
+; CHECK:       thread.user_code.check:
+; CHECK-NEXT:    [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP0]], -1
+; CHECK-NEXT:    br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
+; CHECK:       user_code.entry:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]]) #[[ATTR9]]
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTTHREADID_TEMP_]], align 4
+; CHECK-NEXT:    call void @__omp_outlined__16(i32* noundef nonnull align 4 dereferenceable(4) [[DOTTHREADID_TEMP_]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTZERO_ADDR]]) #[[ATTR9]]
+; CHECK-NEXT:    call void @__kmpc_target_deinit(%struct.ident_t* @[[GLOB1]], i1 false, i1 true) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+; CHECK:       worker.exit:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.zero.addr = alloca i32, align 4
+  %.threadid_temp. = alloca i32, align 4
+  store i32 0, i32* %.zero.addr, align 4
+  %0 = call i32 @__kmpc_target_init(%struct.ident_t* @1, i1 false, i1 true, i1 true)
+  %exec_user_code = icmp eq i32 %0, -1
+  br i1 %exec_user_code, label %user_code.entry, label %worker.exit
+
+user_code.entry:                                  ; preds = %entry
+  %1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
+  store i32 %1, i32* %.threadid_temp., align 4
+  call void @__omp_outlined__16(i32* %.threadid_temp., i32* %.zero.addr) #2
+  call void @__kmpc_target_deinit(%struct.ident_t* @1, i1 false, i1 true)
+  ret void
+
+worker.exit:                                      ; preds = %entry
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__16(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__16
+; CHECK-SAME: (i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias noundef nonnull align 4 dereferenceable(4) [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @weak_callee_empty() #[[ATTR10]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @weak_callee_empty() #8
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+define weak hidden void @weak_callee_empty() #1 {
+; CHECK-LABEL: define {{[^@]+}}@weak_callee_empty
+; CHECK-SAME: () #[[ATTR1]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    ret void
+;
+entry:
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+declare void @__kmpc_end_single(%struct.ident_t*, i32) #7
+
+; Function Attrs: convergent nounwind
+declare i32 @__kmpc_single(%struct.ident_t*, i32) #7
+
+; Function Attrs: convergent nounwind
+declare void @__kmpc_barrier(%struct.ident_t*, i32) #7
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__17(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__17
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__17_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__17_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__17(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__17(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__18(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__18
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__18_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__18_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__18(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__18(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+; Function Attrs: convergent nounwind
+define hidden void @simple_state_machine_interprocedural_nested_recursive_after_after() #1 {
+; CHECK-LABEL: define {{[^@]+}}@simple_state_machine_interprocedural_nested_recursive_after_after
+; CHECK-SAME: () #[[ATTR1]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CAPTURED_VARS_ADDRS:%.*]] = alloca [0 x i8*], align 8
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB2]]) #[[ATTR9]]
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast [0 x i8*]* [[CAPTURED_VARS_ADDRS]] to i8**
+; CHECK-NEXT:    call void @__kmpc_parallel_51(%struct.ident_t* @[[GLOB2]], i32 [[TMP0]], i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__19 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__19_wrapper to i8*), i8** [[TMP1]], i64 0) #[[ATTR8]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %captured_vars_addrs = alloca [0 x i8*], align 8
+  %0 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2)
+  %1 = bitcast [0 x i8*]* %captured_vars_addrs to i8**
+  call void @__kmpc_parallel_51(%struct.ident_t* @2, i32 %0, i32 1, i32 -1, i32 -1, i8* bitcast (void (i32*, i32*)* @__omp_outlined__19 to i8*), i8* bitcast (void (i16, i32)* @__omp_outlined__19_wrapper to i8*), i8** %1, i64 0)
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__19(i32* noalias %.global_tid., i32* noalias %.bound_tid.) #0 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__19
+; CHECK-SAME: (i32* noalias [[DOTGLOBAL_TID_:%.*]], i32* noalias [[DOTBOUND_TID_:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
+; CHECK-NEXT:    store i32* [[DOTGLOBAL_TID_]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
+; CHECK-NEXT:    store i32* [[DOTBOUND_TID_]], i32** [[DOTBOUND_TID__ADDR]], align 8
+; CHECK-NEXT:    call void @p0() #[[ATTR11]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.global_tid..addr = alloca i32*, align 8
+  %.bound_tid..addr = alloca i32*, align 8
+  store i32* %.global_tid., i32** %.global_tid..addr, align 8
+  store i32* %.bound_tid., i32** %.bound_tid..addr, align 8
+  call void @p0() #8
+  ret void
+}
+
+; Function Attrs: convergent norecurse nounwind
+define internal void @__omp_outlined__19_wrapper(i16 zeroext %0, i32 %1) #4 {
+; CHECK-LABEL: define {{[^@]+}}@__omp_outlined__19_wrapper
+; CHECK-SAME: (i16 zeroext [[TMP0:%.*]], i32 [[TMP1:%.*]]) #[[ATTR0]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[DOTADDR:%.*]] = alloca i16, align 2
+; CHECK-NEXT:    [[DOTADDR1:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[GLOBAL_ARGS:%.*]] = alloca i8**, align 8
+; CHECK-NEXT:    store i32 0, i32* [[DOTZERO_ADDR]], align 4
+; CHECK-NEXT:    store i16 [[TMP0]], i16* [[DOTADDR]], align 2
+; CHECK-NEXT:    store i32 [[TMP1]], i32* [[DOTADDR1]], align 4
+; CHECK-NEXT:    call void @__kmpc_get_shared_variables(i8*** [[GLOBAL_ARGS]])
+; CHECK-NEXT:    call void @__omp_outlined__19(i32* [[DOTADDR1]], i32* [[DOTZERO_ADDR]]) #[[ATTR2]]
+; CHECK-NEXT:    ret void
+;
+entry:
+  %.addr = alloca i16, align 2
+  %.addr1 = alloca i32, align 4
+  %.zero.addr = alloca i32, align 4
+  %global_args = alloca i8**, align 8
+  store i32 0, i32* %.zero.addr, align 4
+  store i16 %0, i16* %.addr, align 2
+  store i32 %1, i32* %.addr1, align 4
+  call void @__kmpc_get_shared_variables(i8*** %global_args)
+  call void @__omp_outlined__19(i32* %.addr1, i32* %.zero.addr) #2
+  ret void
+}
+
+attributes #0 = { convergent norecurse nounwind "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_53" "target-features"="+ptx32,+sm_53" }
+attributes #1 = { convergent nounwind "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_53" "target-features"="+ptx32,+sm_53" }
+attributes #2 = { nounwind }
+attributes #3 = { convergent "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_53" "target-features"="+ptx32,+sm_53" }
+attributes #4 = { convergent norecurse nounwind "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_53" "target-features"="+ptx32,+sm_53" }
+attributes #5 = { convergent "frame-pointer"="all" "llvm.assume"="omp_no_openmp" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_53" "target-features"="+ptx32,+sm_53" }
+attributes #6 = { convergent nounwind readonly willreturn "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_53" "target-features"="+ptx32,+sm_53" }
+attributes #7 = { convergent nounwind }
+attributes #8 = { convergent }
+attributes #9 = { convergent "llvm.assume"="omp_no_openmp" }
+attributes #10 = { convergent nounwind readonly willreturn }
+
+!omp_offload.info = !{!0, !1, !2, !3, !4, !5, !6, !7}
+!nvvm.annotations = !{!8, !9, !10, !11, !12, !13, !14, !15}
+!llvm.module.flags = !{!16, !17, !18}
+!llvm.ident = !{!19}
+
+!0 = !{i32 0, i32 44, i32 231915, !"simple_state_machine_interprocedural", i32 35, i32 2}
+!1 = !{i32 0, i32 44, i32 231915, !"simple_state_machine_no_openmp_attr", i32 61, i32 4}
+!2 = !{i32 0, i32 44, i32 231915, !"no_state_machine_needed", i32 14, i32 0}
+!3 = !{i32 0, i32 44, i32 231915, !"simple_state_machine_with_fallback", i32 50, i32 3}
+!4 = !{i32 0, i32 44, i32 231915, !"simple_state_machine_pure", i32 72, i32 5}
+!5 = !{i32 0, i32 44, i32 231915, !"simple_state_machine_interprocedural_nested_recursive", i32 86, i32 6}
+!6 = !{i32 0, i32 44, i32 231915, !"no_state_machine_weak_callee", i32 106, i32 7}
+!7 = !{i32 0, i32 44, i32 231915, !"simple_state_machine", i32 19, i32 1}
+!8 = !{void ()* @__omp_offloading_2c_389eb_no_state_machine_needed_l14, !"kernel", i32 1}
+!9 = !{void ()* @__omp_offloading_2c_389eb_simple_state_machine_l19, !"kernel", i32 1}
+!10 = !{void ()* @__omp_offloading_2c_389eb_simple_state_machine_interprocedural_l35, !"kernel", i32 1}
+!11 = !{void ()* @__omp_offloading_2c_389eb_simple_state_machine_with_fallback_l50, !"kernel", i32 1}
+!12 = !{void ()* @__omp_offloading_2c_389eb_simple_state_machine_no_openmp_attr_l61, !"kernel", i32 1}
+!13 = !{void ()* @__omp_offloading_2c_389eb_simple_state_machine_pure_l72, !"kernel", i32 1}
+!14 = !{void ()* @__omp_offloading_2c_389eb_simple_state_machine_interprocedural_nested_recursive_l86, !"kernel", i32 1}
+!15 = !{void ()* @__omp_offloading_2c_389eb_no_state_machine_weak_callee_l106, !"kernel", i32 1}
+!16 = !{i32 1, !"wchar_size", i32 4}
+!17 = !{i32 7, !"PIC Level", i32 2}
+!18 = !{i32 7, !"frame-pointer", i32 2}
+!19 = !{!"clang version 13.0.0"}

llvm/test/Transforms/OpenMP/single_threaded_execution.ll

 ; RUN: opt -passes=openmp-opt-cgscc -debug-only=openmp-opt -disable-output < %s 2>&1 | FileCheck %s
 ; REQUIRES: asserts
 ; ModuleID = 'single_threaded_exeuction.c'
 
 define void @kernel() {
-  call void @__kmpc_kernel_init(i32 512, i16 1)
+  call i32 @omp_get_thread_num()
   call void @nvptx()
   call void @amdgcn()
   ret void
 }
 
 ; CHECK-NOT: [openmp-opt] Basic block @nvptx entry is executed by a single thread.
 ; CHECK: [openmp-opt] Basic block @nvptx if.then is executed by a single thread.
 ; CHECK-NOT: [openmp-opt] Basic block @nvptx if.end is executed by a single thread.

 entry:
   ret void
 }
 
 declare i32 @llvm.nvvm.read.ptx.sreg.tid.x()
 
 declare i32 @llvm.amdgcn.workitem.id.x()
 
-declare void @__kmpc_kernel_init(i32, i16)
+declare i32 @omp_get_thread_num()
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!3, !4}
 !nvvm.annotations = !{!5}
 
 
 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
 !1 = !DIFile(filename: "single_threaded_execution.c", directory: "/tmp/single_threaded_execution.c")
 !2 = !{}
 !3 = !{i32 2, !"Debug Info Version", i32 3}
 !4 = !{i32 1, !"wchar_size", i32 4}
 !5 = !{void ()* @kernel, !"kernel", i32 1}