[OpenMP][NFC] Generalize CGOpenMPRuntimeNVPTX as CGOpenMPRuntimeGPU

[saiislam]

Summary

Refactors CGOpenMPRuntimeNVPTX as CGOpenMPRuntimeGPU to make it a
generalization for OpenMP GPU Codegen. Target specific specialized
methods for NVPTX are defined in class CGOpenMPRuntimeNVPTX. This
paves the way for a clean and maintainable extension to more GPU
targets for OpenMP Codegen.

For original author (git blame) list of CGOpenMPRuntimeGPU code,
look in history of CGOpenMPRuntimeNVPTX.cpp and .h, after this commit.

[JonChesterfield]

This is indeed the direction I had in mind. Broad strokes look right. I probably wouldn't notice an accidental change amidst the whitespace reshuffle. Very happy to read through line by line if you can split the whitespace change out.

clang/lib/CodeGen/CGOpenMPRuntimeGPU.h

377

It's worth avoiding whitespace-only changes in a large diff, even when it brings the code in line with clang-format's rules. Signal to noise is challenging enough without it.

Please would you leave the whitespace-only changes out? I usually open the diff in a friendly GUI and eyeball each segment to see if it can be dropped.

Feel free to fix the whitespace before or after.

[saiislam]

Removed all formatting and spacing changes introduced due to clang-format.

[ABataev]

clang/lib/CodeGen/CGOpenMPRuntimeAMDGCN.cpp

39 ↗

(On Diff #277705)

This is new functionality, better to move it in a separate patch, and this one mark as NFC.

[JonChesterfield]

clang/lib/CodeGen/CGOpenMPRuntimeAMDGCN.cpp

39 ↗

(On Diff #277705)

Works for me. This patch shows how the per-target parts are intended to be done. First patch being totally NFC seems good.

[saiislam]

Removed all references to AMDGCN to make it NFC. Will introduce AMDGCN specific things separately in a followup patch.

[ABataev]

I meant to remove just the new virtual function and its new implementation for AMDGCN, you could keep the new class for AMD GPUs. But I'm fine with this too.

[saiislam]

Thank you.
I will hold committing till llvm-11 branching so it doesn't break something in any downstream dependent project at the last moment.

clang/lib/CodeGen/CGOpenMPRuntimeGPU.h

-//===----- CGOpenMPRuntimeNVPTX.h - Interface to OpenMP NVPTX Runtimes ----===//
+//===------ CGOpenMPRuntimeGPU.h - Interface to OpenMP GPU Runtimes ------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
-// This provides a class for OpenMP runtime code generation specialized to NVPTX
-// targets.
+// This provides a generalized class for OpenMP runtime code generation
+// specialized by GPU target NVPTX.
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMENVPTX_H
-#define LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMENVPTX_H
+#ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H
+#define LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H
 
 #include "CGOpenMPRuntime.h"
 #include "CodeGenFunction.h"
 #include "clang/AST/StmtOpenMP.h"
+#include "llvm/Frontend/OpenMP/OMPGridValues.h"
 
 namespace clang {
 namespace CodeGen {
 
-class CGOpenMPRuntimeNVPTX : public CGOpenMPRuntime {
+class CGOpenMPRuntimeGPU : public CGOpenMPRuntime {
 public:
   /// Defines the execution mode.
   enum ExecutionMode {
     /// SPMD execution mode (all threads are worker threads).
     EM_SPMD,
     /// Non-SPMD execution mode (1 master thread, others are workers).
     EM_NonSPMD,
     /// Unknown execution mode (orphaned directive).
     EM_Unknown,
   };
 private:
   /// Parallel outlined function work for workers to execute.
   llvm::SmallVector<llvm::Function *, 16> Work;
 
   struct EntryFunctionState {
     llvm::BasicBlock *ExitBB = nullptr;
   };
 
protected:
 
   /// Returns additional flags that can be stored in reserved_2 field of the
   /// default location.
   /// For NVPTX target contains data about SPMD/Non-SPMD execution mode +
   /// Full/Lightweight runtime mode. Used for better optimization.
   unsigned getDefaultLocationReserved2Flags() const override;
 
 public:
-  explicit CGOpenMPRuntimeNVPTX(CodeGenModule &CGM);
+  explicit CGOpenMPRuntimeGPU(CodeGenModule &CGM);
   void clear() override;
 
+  /// Declare generalized virtual functions which need to be defined
+  /// by all specializations of OpenMPGPURuntime Targets.
+  virtual llvm::Value *getGPUWarpSize(CodeGenFunction &CGF) = 0;
+
   /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32
   /// global_tid, int proc_bind) to generate code for 'proc_bind' clause.
   virtual void emitProcBindClause(CodeGenFunction &CGF,
                                   llvm::omp::ProcBindKind ProcBind,
                                   SourceLocation Loc) override;
 
   /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32
   /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads'
enum DataSharingMode {
     Generic,
   };
 
   /// Cleans up references to the objects in finished function.
   ///
   void functionFinished(CodeGenFunction &CGF) override;
 
   /// Choose a default value for the dist_schedule clause.
   void getDefaultDistScheduleAndChunk(CodeGenFunction &CGF,
       const OMPLoopDirective &S, OpenMPDistScheduleClauseKind &ScheduleKind,
       llvm::Value *&Chunk) const override;
 
   /// Choose a default value for the schedule clause.
   void getDefaultScheduleAndChunk(CodeGenFunction &CGF,
       const OMPLoopDirective &S, OpenMPScheduleClauseKind &ScheduleKind,
       const Expr *&ChunkExpr) const override;
 
   /// Adjust some parameters for the target-based directives, like addresses of
   /// the variables captured by reference in lambdas.
   void adjustTargetSpecificDataForLambdas(
       CodeGenFunction &CGF, const OMPExecutableDirective &D) const override;
 
   /// Perform check on requires decl to ensure that target architecture
private:
 
   /// Map between an outlined function and its wrapper.
   llvm::DenseMap<llvm::Function *, llvm::Function *> WrapperFunctionsMap;
 
   /// Emit function which wraps the outline parallel region
   /// and controls the parameters which are passed to this function.
   /// The wrapper ensures that the outlined function is called
   /// with the correct arguments when data is shared.
   llvm::Function *createParallelDataSharingWrapper(
       llvm::Function *OutlinedParallelFn, const OMPExecutableDirective &D);
 
   /// The data for the single globalized variable.
   struct MappedVarData {
     /// Corresponding field in the global record.
     const FieldDecl *FD = nullptr;
     /// Corresponding address.
     Address PrivateAddr = Address::invalid();
     /// true, if only one element is required (for latprivates in SPMD mode),
     /// false, if need to create based on the warp-size.
     bool IsOnePerTeam = false;
     MappedVarData() = delete;
     MappedVarData(const FieldDecl *FD, bool IsOnePerTeam = false)
         : FD(FD), IsOnePerTeam(IsOnePerTeam) {}
   };
   /// The map of local variables to their addresses in the global memory.
   using DeclToAddrMapTy = llvm::MapVector<const Decl *, MappedVarData>;
   /// Set of the parameters passed by value escaping OpenMP context.
   using EscapedParamsTy = llvm::SmallPtrSet<const Decl *, 4>;
   struct FunctionData {
     DeclToAddrMapTy LocalVarData;
     llvm::Optional<DeclToAddrMapTy> SecondaryLocalVarData = llvm::None;
     EscapedParamsTy EscapedParameters;
     llvm::SmallVector<const ValueDecl*, 4> EscapedVariableLengthDecls;
     llvm::SmallVector<llvm::Value *, 4> EscapedVariableLengthDeclsAddrs;
     const RecordDecl *GlobalRecord = nullptr;
     llvm::Optional<const RecordDecl *> SecondaryGlobalRecord = llvm::None;
     llvm::Value *GlobalRecordAddr = nullptr;
     llvm::Value *IsInSPMDModeFlag = nullptr;
     std::unique_ptr<CodeGenFunction::OMPMapVars> MappedParams;
   };
   /// Maps the function to the list of the globalized variables with their
private:
   /// the given kernel.
   llvm::GlobalVariable *KernelStaticGlobalized = nullptr;
   /// Pair of the Non-SPMD team and all reductions variables in this team
   /// region.
   std::pair<const Decl *, llvm::SmallVector<const ValueDecl *, 4>>
       TeamAndReductions;
 };
 
 } // CodeGen namespace.
 } // clang namespace.
 
-#endif // LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMENVPTX_H
+#endif // LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMEGPU_H

clang/lib/CodeGen/CGOpenMPRuntimeGPU.cpp

-//===---- CGOpenMPRuntimeNVPTX.cpp - Interface to OpenMP NVPTX Runtimes ---===//
+//===---- CGOpenMPRuntimeGPU.cpp - Interface to OpenMP GPU Runtimes ----===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
-// This provides a class for OpenMP runtime code generation specialized to NVPTX
-// targets.
+// This provides a generalized class for OpenMP runtime code generation
+// specialized by GPU target NVPTX.
 //
 //===----------------------------------------------------------------------===//
 
+#include "CGOpenMPRuntimeGPU.h"
 #include "CGOpenMPRuntimeNVPTX.h"
 #include "CodeGenFunction.h"
 #include "clang/AST/Attr.h"
 #include "clang/AST/DeclOpenMP.h"
 #include "clang/AST/StmtOpenMP.h"
 #include "clang/AST/StmtVisitor.h"
 #include "clang/Basic/Cuda.h"
 #include "llvm/ADT/SmallPtrSet.h"

 };
 
 /// A class to track the execution mode when codegening directives within
 /// a target region. The appropriate mode (SPMD|NON-SPMD) is set on entry
 /// to the target region and used by containing directives such as 'parallel'
 /// to emit optimized code.
 class ExecutionRuntimeModesRAII {
 private:
-  CGOpenMPRuntimeNVPTX::ExecutionMode SavedExecMode =
-      CGOpenMPRuntimeNVPTX::EM_Unknown;
-  CGOpenMPRuntimeNVPTX::ExecutionMode &ExecMode;
+  CGOpenMPRuntimeGPU::ExecutionMode SavedExecMode =
+      CGOpenMPRuntimeGPU::EM_Unknown;
+  CGOpenMPRuntimeGPU::ExecutionMode &ExecMode;
   bool SavedRuntimeMode = false;
   bool *RuntimeMode = nullptr;
 
 public:
   /// Constructor for Non-SPMD mode.
-  ExecutionRuntimeModesRAII(CGOpenMPRuntimeNVPTX::ExecutionMode &ExecMode)
+  ExecutionRuntimeModesRAII(CGOpenMPRuntimeGPU::ExecutionMode &ExecMode)
       : ExecMode(ExecMode) {
     SavedExecMode = ExecMode;
-    ExecMode = CGOpenMPRuntimeNVPTX::EM_NonSPMD;
+    ExecMode = CGOpenMPRuntimeGPU::EM_NonSPMD;
   }
   /// Constructor for SPMD mode.
-  ExecutionRuntimeModesRAII(CGOpenMPRuntimeNVPTX::ExecutionMode &ExecMode,
+  ExecutionRuntimeModesRAII(CGOpenMPRuntimeGPU::ExecutionMode &ExecMode,
                             bool &RuntimeMode, bool FullRuntimeMode)
       : ExecMode(ExecMode), RuntimeMode(&RuntimeMode) {
     SavedExecMode = ExecMode;
     SavedRuntimeMode = RuntimeMode;
-    ExecMode = CGOpenMPRuntimeNVPTX::EM_SPMD;
+    ExecMode = CGOpenMPRuntimeGPU::EM_SPMD;
     RuntimeMode = FullRuntimeMode;
   }
   ~ExecutionRuntimeModesRAII() {
     ExecMode = SavedExecMode;
     if (RuntimeMode)
       *RuntimeMode = SavedRuntimeMode;
   }
 };

 
 static const ValueDecl *getPrivateItem(const Expr *RefExpr) {
   RefExpr = RefExpr->IgnoreParens();
   if (const auto *ASE = dyn_cast<ArraySubscriptExpr>(RefExpr)) {
     const Expr *Base = ASE->getBase()->IgnoreParenImpCasts();
     while (const auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
       Base = TempASE->getBase()->IgnoreParenImpCasts();
     RefExpr = Base;
   } else if (auto *OASE = dyn_cast<OMPArraySectionExpr>(RefExpr)) {
     const Expr *Base = OASE->getBase()->IgnoreParenImpCasts();
     while (const auto *TempOASE = dyn_cast<OMPArraySectionExpr>(Base))
       Base = TempOASE->getBase()->IgnoreParenImpCasts();
     while (const auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
       Base = TempASE->getBase()->IgnoreParenImpCasts();
     RefExpr = Base;
   }
   RefExpr = RefExpr->IgnoreParenImpCasts();
   if (const auto *DE = dyn_cast<DeclRefExpr>(RefExpr))
     return cast<ValueDecl>(DE->getDecl()->getCanonicalDecl());
   const auto *ME = cast<MemberExpr>(RefExpr);
   return cast<ValueDecl>(ME->getMemberDecl()->getCanonicalDecl());
 }
 
 
 static RecordDecl *buildRecordForGlobalizedVars(
     ASTContext &C, ArrayRef<const ValueDecl *> EscapedDecls,
     ArrayRef<const ValueDecl *> EscapedDeclsForTeams,
     llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
         &MappedDeclsFields, int BufSize) {
   using VarsDataTy = std::pair<CharUnits /*Align*/, const ValueDecl *>;
   if (EscapedDecls.empty() && EscapedDeclsForTeams.empty())
     return nullptr;
   SmallVector<VarsDataTy, 4> GlobalizedVars;
   for (const ValueDecl *D : EscapedDecls)
     GlobalizedVars.emplace_back(
         CharUnits::fromQuantity(std::max(
             C.getDeclAlign(D).getQuantity(),
public:
   /// Returns the list of the escaped variables with the variably modified
   /// types.
   ArrayRef<const ValueDecl *> getEscapedVariableLengthDecls() const {
     return EscapedVariableLengthDecls.getArrayRef();
   }
 };
 } // anonymous namespace
 
-/// Get the GPU warp size.
-static llvm::Value *getNVPTXWarpSize(CodeGenFunction &CGF) {
-  return CGF.EmitRuntimeCall(
-      llvm::Intrinsic::getDeclaration(
-          &CGF.CGM.getModule(), llvm::Intrinsic::nvvm_read_ptx_sreg_warpsize),
-      "nvptx_warp_size");
-}
-
 /// Get the id of the current thread on the GPU.
 static llvm::Value *getNVPTXThreadID(CodeGenFunction &CGF) {
   return CGF.EmitRuntimeCall(
       llvm::Intrinsic::getDeclaration(
           &CGF.CGM.getModule(), llvm::Intrinsic::nvvm_read_ptx_sreg_tid_x),
       "nvptx_tid");
 }
 

 /// Get the value of the thread_limit clause in the teams directive.
 /// For the 'generic' execution mode, the runtime encodes thread_limit in
 /// the launch parameters, always starting thread_limit+warpSize threads per
 /// CTA. The threads in the last warp are reserved for master execution.
 /// For the 'spmd' execution mode, all threads in a CTA are part of the team.
 static llvm::Value *getThreadLimit(CodeGenFunction &CGF,
                                    bool IsInSPMDExecutionMode = false) {
   CGBuilderTy &Bld = CGF.Builder;
+  auto &RT = static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime());
   return IsInSPMDExecutionMode
              ? getNVPTXNumThreads(CGF)
-             : Bld.CreateNUWSub(getNVPTXNumThreads(CGF), getNVPTXWarpSize(CGF),
+             : Bld.CreateNUWSub(getNVPTXNumThreads(CGF), RT.getGPUWarpSize(CGF),
                                 "thread_limit");
 }
 
 /// Get the thread id of the OMP master thread.
 /// The master thread id is the first thread (lane) of the last warp in the
 /// GPU block.  Warp size is assumed to be some power of 2.
 /// Thread id is 0 indexed.
 /// E.g: If NumThreads is 33, master id is 32.
 ///      If NumThreads is 64, master id is 32.
 ///      If NumThreads is 1024, master id is 992.
 static llvm::Value *getMasterThreadID(CodeGenFunction &CGF) {
   CGBuilderTy &Bld = CGF.Builder;
   llvm::Value *NumThreads = getNVPTXNumThreads(CGF);
-
+  auto &RT = static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime());
   // We assume that the warp size is a power of 2.
-  llvm::Value *Mask = Bld.CreateNUWSub(getNVPTXWarpSize(CGF), Bld.getInt32(1));
+  llvm::Value *Mask = Bld.CreateNUWSub(RT.getGPUWarpSize(CGF), Bld.getInt32(1));
 
   return Bld.CreateAnd(Bld.CreateNUWSub(NumThreads, Bld.getInt32(1)),
                        Bld.CreateNot(Mask), "master_tid");
 }
 
-CGOpenMPRuntimeNVPTX::WorkerFunctionState::WorkerFunctionState(
+CGOpenMPRuntimeGPU::WorkerFunctionState::WorkerFunctionState(
     CodeGenModule &CGM, SourceLocation Loc)
     : WorkerFn(nullptr), CGFI(CGM.getTypes().arrangeNullaryFunction()),
       Loc(Loc) {
   createWorkerFunction(CGM);
 }
 
-void CGOpenMPRuntimeNVPTX::WorkerFunctionState::createWorkerFunction(
+void CGOpenMPRuntimeGPU::WorkerFunctionState::createWorkerFunction(
     CodeGenModule &CGM) {
   // Create an worker function with no arguments.
 
   WorkerFn = llvm::Function::Create(
       CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
       /*placeholder=*/"_worker", &CGM.getModule());
   CGM.SetInternalFunctionAttributes(GlobalDecl(), WorkerFn, CGFI);
   WorkerFn->setDoesNotRecurse();
 }
 
-CGOpenMPRuntimeNVPTX::ExecutionMode
-CGOpenMPRuntimeNVPTX::getExecutionMode() const {
+CGOpenMPRuntimeGPU::ExecutionMode
+CGOpenMPRuntimeGPU::getExecutionMode() const {
   return CurrentExecutionMode;
 }
 
-static CGOpenMPRuntimeNVPTX::DataSharingMode
+static CGOpenMPRuntimeGPU::DataSharingMode
 getDataSharingMode(CodeGenModule &CGM) {
-  return CGM.getLangOpts().OpenMPCUDAMode ? CGOpenMPRuntimeNVPTX::CUDA
-                                          : CGOpenMPRuntimeNVPTX::Generic;
+  return CGM.getLangOpts().OpenMPCUDAMode ? CGOpenMPRuntimeGPU::CUDA
+                                          : CGOpenMPRuntimeGPU::Generic;
 }
 
 /// Check for inner (nested) SPMD construct, if any
 static bool hasNestedSPMDDirective(ASTContext &Ctx,
                                    const OMPExecutableDirective &D) {
   const auto *CS = D.getInnermostCapturedStmt();
   const auto *Body =
       CS->getCapturedStmt()->IgnoreContainers(/*IgnoreCaptured=*/true);
static bool supportsLightweightRuntime(ASTContext &Ctx,
   case OMPD_unknown:
   default:
     break;
   }
   llvm_unreachable(
       "Unknown programming model for OpenMP directive on NVPTX target.");
 }
 
-void CGOpenMPRuntimeNVPTX::emitNonSPMDKernel(const OMPExecutableDirective &D,
+void CGOpenMPRuntimeGPU::emitNonSPMDKernel(const OMPExecutableDirective &D,
                                              StringRef ParentName,
                                              llvm::Function *&OutlinedFn,
                                              llvm::Constant *&OutlinedFnID,
                                              bool IsOffloadEntry,
                                              const RegionCodeGenTy &CodeGen) {
   ExecutionRuntimeModesRAII ModeRAII(CurrentExecutionMode);
   EntryFunctionState EST;
   WorkerFunctionState WST(CGM, D.getBeginLoc());
   Work.clear();
   WrapperFunctionsMap.clear();
 
   // Emit target region as a standalone region.
   class NVPTXPrePostActionTy : public PrePostActionTy {
-    CGOpenMPRuntimeNVPTX::EntryFunctionState &EST;
-    CGOpenMPRuntimeNVPTX::WorkerFunctionState &WST;
+    CGOpenMPRuntimeGPU::EntryFunctionState &EST;
+    CGOpenMPRuntimeGPU::WorkerFunctionState &WST;
 
   public:
-    NVPTXPrePostActionTy(CGOpenMPRuntimeNVPTX::EntryFunctionState &EST,
-                         CGOpenMPRuntimeNVPTX::WorkerFunctionState &WST)
+    NVPTXPrePostActionTy(CGOpenMPRuntimeGPU::EntryFunctionState &EST,
+                         CGOpenMPRuntimeGPU::WorkerFunctionState &WST)
         : EST(EST), WST(WST) {}
     void Enter(CodeGenFunction &CGF) override {
       auto &RT =
-          static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime());
+          static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime());
       RT.emitNonSPMDEntryHeader(CGF, EST, WST);
       // Skip target region initialization.
       RT.setLocThreadIdInsertPt(CGF, /*AtCurrentPoint=*/true);
     }
     void Exit(CodeGenFunction &CGF) override {
       auto &RT =
-          static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime());
+          static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime());
       RT.clearLocThreadIdInsertPt(CGF);
       RT.emitNonSPMDEntryFooter(CGF, EST);
     }
   } Action(EST, WST);
   CodeGen.setAction(Action);
   IsInTTDRegion = true;
   // Reserve place for the globalized memory.
   GlobalizedRecords.emplace_back();
void CGOpenMPRuntimeGPU::emitNonSPMDKernel(const OMPExecutableDirective &D,
   // region's entry function.
   WST.WorkerFn->setName(Twine(OutlinedFn->getName(), "_worker"));
 
   // Create the worker function
   emitWorkerFunction(WST);
 }
 
 // Setup NVPTX threads for master-worker OpenMP scheme.
-void CGOpenMPRuntimeNVPTX::emitNonSPMDEntryHeader(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitNonSPMDEntryHeader(CodeGenFunction &CGF,
                                                   EntryFunctionState &EST,
                                                   WorkerFunctionState &WST) {
   CGBuilderTy &Bld = CGF.Builder;
 
   llvm::BasicBlock *WorkerBB = CGF.createBasicBlock(".worker");
   llvm::BasicBlock *MasterCheckBB = CGF.createBasicBlock(".mastercheck");
   llvm::BasicBlock *MasterBB = CGF.createBasicBlock(".master");
   EST.ExitBB = CGF.createBasicBlock(".exit");
 
void CGOpenMPRuntimeGPU::emitNonSPMDEntryHeader(CodeGenFunction &CGF,
   // TODO: Optimize runtime initialization and pass in correct value.
   llvm::Value *Args[] = {getThreadLimit(CGF),
                          Bld.getInt16(/*RequiresOMPRuntime=*/1)};
   CGF.EmitRuntimeCall(
       createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_kernel_init), Args);
 
   // For data sharing, we need to initialize the stack.
   CGF.EmitRuntimeCall(
       createNVPTXRuntimeFunction(
           OMPRTL_NVPTX__kmpc_data_sharing_init_stack));
 
   emitGenericVarsProlog(CGF, WST.Loc);
 }
 
-void CGOpenMPRuntimeNVPTX::emitNonSPMDEntryFooter(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitNonSPMDEntryFooter(CodeGenFunction &CGF,
                                                   EntryFunctionState &EST) {
   IsInTargetMasterThreadRegion = false;
   if (!CGF.HaveInsertPoint())
     return;
 
   emitGenericVarsEpilog(CGF);
 
   if (!EST.ExitBB)
     EST.ExitBB = CGF.createBasicBlock(".exit");
void CGOpenMPRuntimeGPU::emitNonSPMDEntryFooter(CodeGenFunction &CGF,
   syncCTAThreads(CGF);
   // Master thread jumps to exit point.
   CGF.EmitBranch(EST.ExitBB);
 
   CGF.EmitBlock(EST.ExitBB);
   EST.ExitBB = nullptr;
 }
 
-void CGOpenMPRuntimeNVPTX::emitSPMDKernel(const OMPExecutableDirective &D,
+void CGOpenMPRuntimeGPU::emitSPMDKernel(const OMPExecutableDirective &D,
                                           StringRef ParentName,
                                           llvm::Function *&OutlinedFn,
                                           llvm::Constant *&OutlinedFnID,
                                           bool IsOffloadEntry,
                                           const RegionCodeGenTy &CodeGen) {
   ExecutionRuntimeModesRAII ModeRAII(
       CurrentExecutionMode, RequiresFullRuntime,
       CGM.getLangOpts().OpenMPCUDAForceFullRuntime ||
           !supportsLightweightRuntime(CGM.getContext(), D));
   EntryFunctionState EST;
 
   // Emit target region as a standalone region.
   class NVPTXPrePostActionTy : public PrePostActionTy {
-    CGOpenMPRuntimeNVPTX &RT;
-    CGOpenMPRuntimeNVPTX::EntryFunctionState &EST;
+    CGOpenMPRuntimeGPU &RT;
+    CGOpenMPRuntimeGPU::EntryFunctionState &EST;
     const OMPExecutableDirective &D;
 
   public:
-    NVPTXPrePostActionTy(CGOpenMPRuntimeNVPTX &RT,
-                         CGOpenMPRuntimeNVPTX::EntryFunctionState &EST,
+    NVPTXPrePostActionTy(CGOpenMPRuntimeGPU &RT,
+                         CGOpenMPRuntimeGPU::EntryFunctionState &EST,
                          const OMPExecutableDirective &D)
         : RT(RT), EST(EST), D(D) {}
     void Enter(CodeGenFunction &CGF) override {
       RT.emitSPMDEntryHeader(CGF, EST, D);
       // Skip target region initialization.
       RT.setLocThreadIdInsertPt(CGF, /*AtCurrentPoint=*/true);
     }
     void Exit(CodeGenFunction &CGF) override {
KernelStaticGlobalized = new llvm::GlobalVariable(
         llvm::GlobalValue::NotThreadLocal,
         CGM.getContext().getTargetAddressSpace(LangAS::cuda_shared));
   }
   emitTargetOutlinedFunctionHelper(D, ParentName, OutlinedFn, OutlinedFnID,
                                    IsOffloadEntry, CodeGen);
   IsInTTDRegion = false;
 }
 
-void CGOpenMPRuntimeNVPTX::emitSPMDEntryHeader(
+void CGOpenMPRuntimeGPU::emitSPMDEntryHeader(
     CodeGenFunction &CGF, EntryFunctionState &EST,
     const OMPExecutableDirective &D) {
   CGBuilderTy &Bld = CGF.Builder;
 
   // Setup BBs in entry function.
   llvm::BasicBlock *ExecuteBB = CGF.createBasicBlock(".execute");
   EST.ExitBB = CGF.createBasicBlock(".exit");
 
void CGOpenMPRuntimeGPU::emitSPMDEntryHeader(
 
   CGF.EmitBranch(ExecuteBB);
 
   CGF.EmitBlock(ExecuteBB);
 
   IsInTargetMasterThreadRegion = true;
 }
 
-void CGOpenMPRuntimeNVPTX::emitSPMDEntryFooter(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitSPMDEntryFooter(CodeGenFunction &CGF,
                                                EntryFunctionState &EST) {
   IsInTargetMasterThreadRegion = false;
   if (!CGF.HaveInsertPoint())
     return;
 
   if (!EST.ExitBB)
     EST.ExitBB = CGF.createBasicBlock(".exit");
 
   llvm::BasicBlock *OMPDeInitBB = CGF.createBasicBlock(".omp.deinit");
   CGF.EmitBranch(OMPDeInitBB);
 
   CGF.EmitBlock(OMPDeInitBB);
   // DeInitialize the OMP state in the runtime; called by all active threads.
   llvm::Value *Args[] = {/*RequiresOMPRuntime=*/
                          CGF.Builder.getInt16(RequiresFullRuntime ? 1 : 0)};
   CGF.EmitRuntimeCall(
       createNVPTXRuntimeFunction(
           OMPRTL_NVPTX__kmpc_spmd_kernel_deinit_v2), Args);
   CGF.EmitBranch(EST.ExitBB);
 
   CGF.EmitBlock(EST.ExitBB);
   EST.ExitBB = nullptr;
 }
 
 // Create a unique global variable to indicate the execution mode of this target
 // region. The execution mode is either 'generic', or 'spmd' depending on the
 // target directive. This variable is picked up by the offload library to setup
 // the device appropriately before kernel launch. If the execution mode is
 // 'generic', the runtime reserves one warp for the master, otherwise, all
 // warps participate in parallel work.
 static void setPropertyExecutionMode(CodeGenModule &CGM, StringRef Name,
                                      bool Mode) {
   auto *GVMode =
       new llvm::GlobalVariable(CGM.getModule(), CGM.Int8Ty, /*isConstant=*/true,
                                llvm::GlobalValue::WeakAnyLinkage,
                                llvm::ConstantInt::get(CGM.Int8Ty, Mode ? 0 : 1),
                                Twine(Name, "_exec_mode"));
   CGM.addCompilerUsedGlobal(GVMode);
 }
 
-void CGOpenMPRuntimeNVPTX::emitWorkerFunction(WorkerFunctionState &WST) {
+void CGOpenMPRuntimeGPU::emitWorkerFunction(WorkerFunctionState &WST) {
   ASTContext &Ctx = CGM.getContext();
 
   CodeGenFunction CGF(CGM, /*suppressNewContext=*/true);
   CGF.StartFunction(GlobalDecl(), Ctx.VoidTy, WST.WorkerFn, WST.CGFI, {},
                     WST.Loc, WST.Loc);
   emitWorkerLoop(CGF, WST);
   CGF.FinishFunction();
 }
 
-void CGOpenMPRuntimeNVPTX::emitWorkerLoop(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitWorkerLoop(CodeGenFunction &CGF,
                                           WorkerFunctionState &WST) {
   //
   // The workers enter this loop and wait for parallel work from the master.
   // When the master encounters a parallel region it sets up the work + variable
   // arguments, and wakes up the workers.  The workers first check to see if
   // they are required for the parallel region, i.e., within the # of requested
   // parallel threads.  The activated workers load the variable arguments and
   // execute the parallel work.
   //
void CGOpenMPRuntimeGPU::emitWorkerLoop(CodeGenFunction &CGF,
   clearLocThreadIdInsertPt(CGF);
 }
 
 /// Returns specified OpenMP runtime function for the current OpenMP
 /// implementation.  Specialized for the NVPTX device.
 /// \param Function OpenMP runtime function.
 /// \return Specified function.
 llvm::FunctionCallee
-CGOpenMPRuntimeNVPTX::createNVPTXRuntimeFunction(unsigned Function) {
+CGOpenMPRuntimeGPU::createNVPTXRuntimeFunction(unsigned Function) {
   llvm::FunctionCallee RTLFn = nullptr;
   switch (static_cast<OpenMPRTLFunctionNVPTX>(Function)) {
   case OMPRTL_NVPTX__kmpc_kernel_init: {
     // Build void __kmpc_kernel_init(kmp_int32 thread_limit, int16_t
     // RequiresOMPRuntime);
     llvm::Type *TypeParams[] = {CGM.Int32Ty, CGM.Int16Ty};
     auto *FnTy =
         llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
auto *FnTy =
         llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
     RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_prepare_parallel");
     break;
   }
   case OMPRTL_NVPTX__kmpc_kernel_parallel: {
     /// Build bool __kmpc_kernel_parallel(void **outlined_function);
     llvm::Type *TypeParams[] = {CGM.Int8PtrPtrTy};
     llvm::Type *RetTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy);
     auto *FnTy =
         llvm::FunctionType::get(RetTy, TypeParams, /*isVarArg*/ false);
     RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_parallel");
     break;
   }
   case OMPRTL_NVPTX__kmpc_kernel_end_parallel: {
     /// Build void __kmpc_kernel_end_parallel();
     auto *FnTy =
         llvm::FunctionType::get(CGM.VoidTy, llvm::None, /*isVarArg*/ false);
case OMPRTL__kmpc_barrier_simple_spmd: {
     RTLFn = CGM.CreateConvergentRuntimeFunction(
         FnTy, /*Name*/ "__kmpc_barrier_simple_spmd");
     break;
   }
   case OMPRTL_NVPTX__kmpc_warp_active_thread_mask: {
     // Build int32_t __kmpc_warp_active_thread_mask(void);
     auto *FnTy =
         llvm::FunctionType::get(CGM.Int32Ty, llvm::None, /*isVarArg=*/false);
     RTLFn = CGM.CreateConvergentRuntimeFunction(FnTy, "__kmpc_warp_active_thread_mask");
     break;
   }
   case OMPRTL_NVPTX__kmpc_syncwarp: {
     // Build void __kmpc_syncwarp(kmp_int32 Mask);
     auto *FnTy =
         llvm::FunctionType::get(CGM.VoidTy, CGM.Int32Ty, /*isVarArg=*/false);
     RTLFn = CGM.CreateConvergentRuntimeFunction(FnTy, "__kmpc_syncwarp");
     break;
   }
   }
   return RTLFn;
 }
 
-void CGOpenMPRuntimeNVPTX::createOffloadEntry(llvm::Constant *ID,
+void CGOpenMPRuntimeGPU::createOffloadEntry(llvm::Constant *ID,
                                               llvm::Constant *Addr,
                                               uint64_t Size, int32_t,
                                               llvm::GlobalValue::LinkageTypes) {
   // TODO: Add support for global variables on the device after declare target
   // support.
   if (!isa<llvm::Function>(Addr))
     return;
   llvm::Module &M = CGM.getModule();
   llvm::LLVMContext &Ctx = CGM.getLLVMContext();
 
   // Get "nvvm.annotations" metadata node
   llvm::NamedMDNode *MD = M.getOrInsertNamedMetadata("nvvm.annotations");
 
   llvm::Metadata *MDVals[] = {
       llvm::ConstantAsMetadata::get(Addr), llvm::MDString::get(Ctx, "kernel"),
       llvm::ConstantAsMetadata::get(
           llvm::ConstantInt::get(llvm::Type::getInt32Ty(Ctx), 1))};
   // Append metadata to nvvm.annotations
   MD->addOperand(llvm::MDNode::get(Ctx, MDVals));
 }
 
-void CGOpenMPRuntimeNVPTX::emitTargetOutlinedFunction(
+void CGOpenMPRuntimeGPU::emitTargetOutlinedFunction(
     const OMPExecutableDirective &D, StringRef ParentName,
     llvm::Function *&OutlinedFn, llvm::Constant *&OutlinedFnID,
     bool IsOffloadEntry, const RegionCodeGenTy &CodeGen) {
   if (!IsOffloadEntry) // Nothing to do.
     return;
 
   assert(!ParentName.empty() && "Invalid target region parent name!");
 
enum ModeFlagsTy : unsigned {
   LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue=*/KMP_IDENT_SIMPLE_RT_MODE)
 };
 
 /// Special mode Undefined. Is the combination of Non-SPMD mode + SimpleRuntime.
 static const ModeFlagsTy UndefinedMode =
     (~KMP_IDENT_SPMD_MODE) & KMP_IDENT_SIMPLE_RT_MODE;
 } // anonymous namespace
 
-unsigned CGOpenMPRuntimeNVPTX::getDefaultLocationReserved2Flags() const {
+unsigned CGOpenMPRuntimeGPU::getDefaultLocationReserved2Flags() const {
   switch (getExecutionMode()) {
   case EM_SPMD:
     if (requiresFullRuntime())
       return KMP_IDENT_SPMD_MODE & (~KMP_IDENT_SIMPLE_RT_MODE);
     return KMP_IDENT_SPMD_MODE | KMP_IDENT_SIMPLE_RT_MODE;
   case EM_NonSPMD:
     assert(requiresFullRuntime() && "Expected full runtime.");
     return (~KMP_IDENT_SPMD_MODE) & (~KMP_IDENT_SIMPLE_RT_MODE);
   case EM_Unknown:
     return UndefinedMode;
   }
   llvm_unreachable("Unknown flags are requested.");
 }
 
-CGOpenMPRuntimeNVPTX::CGOpenMPRuntimeNVPTX(CodeGenModule &CGM)
+CGOpenMPRuntimeGPU::CGOpenMPRuntimeGPU(CodeGenModule &CGM)
     : CGOpenMPRuntime(CGM, "_", "$") {
   if (!CGM.getLangOpts().OpenMPIsDevice)
     llvm_unreachable("OpenMP NVPTX can only handle device code.");
 }
 
-void CGOpenMPRuntimeNVPTX::emitProcBindClause(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitProcBindClause(CodeGenFunction &CGF,
                                               ProcBindKind ProcBind,
                                               SourceLocation Loc) {
   // Do nothing in case of SPMD mode and L0 parallel.
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
+  if (getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD)
     return;
 
   CGOpenMPRuntime::emitProcBindClause(CGF, ProcBind, Loc);
 }
 
-void CGOpenMPRuntimeNVPTX::emitNumThreadsClause(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitNumThreadsClause(CodeGenFunction &CGF,
                                                 llvm::Value *NumThreads,
                                                 SourceLocation Loc) {
   // Do nothing in case of SPMD mode and L0 parallel.
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
+  if (getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD)
     return;
 
   CGOpenMPRuntime::emitNumThreadsClause(CGF, NumThreads, Loc);
 }
 
-void CGOpenMPRuntimeNVPTX::emitNumTeamsClause(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitNumTeamsClause(CodeGenFunction &CGF,
                                               const Expr *NumTeams,
                                               const Expr *ThreadLimit,
                                               SourceLocation Loc) {}
 
-llvm::Function *CGOpenMPRuntimeNVPTX::emitParallelOutlinedFunction(
+llvm::Function *CGOpenMPRuntimeGPU::emitParallelOutlinedFunction(
     const OMPExecutableDirective &D, const VarDecl *ThreadIDVar,
     OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) {
   // Emit target region as a standalone region.
   class NVPTXPrePostActionTy : public PrePostActionTy {
     bool &IsInParallelRegion;
     bool PrevIsInParallelRegion;
 
   public:
auto *OutlinedFun =
           D, ThreadIDVar, InnermostKind, CodeGen));
   if (CGM.getLangOpts().Optimize) {
     OutlinedFun->removeFnAttr(llvm::Attribute::NoInline);
     OutlinedFun->removeFnAttr(llvm::Attribute::OptimizeNone);
     OutlinedFun->addFnAttr(llvm::Attribute::AlwaysInline);
   }
   IsInTargetMasterThreadRegion = PrevIsInTargetMasterThreadRegion;
   IsInTTDRegion = PrevIsInTTDRegion;
-  if (getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD &&
+  if (getExecutionMode() != CGOpenMPRuntimeGPU::EM_SPMD &&
       !IsInParallelRegion) {
     llvm::Function *WrapperFun =
         createParallelDataSharingWrapper(OutlinedFun, D);
     WrapperFunctionsMap[OutlinedFun] = WrapperFun;
   }
 
   return OutlinedFun;
 }
getTeamsReductionVars(ASTContext &Ctx, const OMPExecutableDirective &D,
   assert(isOpenMPTeamsDirective(D.getDirectiveKind()) &&
          "expected teams directive.");
   for (const auto *C : D.getClausesOfKind<OMPReductionClause>()) {
     for (const Expr *E : C->privates())
       Vars.push_back(getPrivateItem(E));
   }
 }
 
-llvm::Function *CGOpenMPRuntimeNVPTX::emitTeamsOutlinedFunction(
+llvm::Function *CGOpenMPRuntimeGPU::emitTeamsOutlinedFunction(
     const OMPExecutableDirective &D, const VarDecl *ThreadIDVar,
     OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) {
   SourceLocation Loc = D.getBeginLoc();
 
   const RecordDecl *GlobalizedRD = nullptr;
   llvm::SmallVector<const ValueDecl *, 4> LastPrivatesReductions;
   llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *> MappedDeclsFields;
   // Globalize team reductions variable unconditionally in all modes.
-  if (getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD)
+  if (getExecutionMode() != CGOpenMPRuntimeGPU::EM_SPMD)
     getTeamsReductionVars(CGM.getContext(), D, LastPrivatesReductions);
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD) {
+  if (getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD) {
     getDistributeLastprivateVars(CGM.getContext(), D, LastPrivatesReductions);
     if (!LastPrivatesReductions.empty()) {
       GlobalizedRD = ::buildRecordForGlobalizedVars(
           CGM.getContext(), llvm::None, LastPrivatesReductions,
           MappedDeclsFields, WarpSize);
     }
   } else if (!LastPrivatesReductions.empty()) {
     assert(!TeamAndReductions.first &&
llvm::Function *CGOpenMPRuntimeGPU::emitTeamsOutlinedFunction(
   public:
     NVPTXPrePostActionTy(
         SourceLocation &Loc, const RecordDecl *GlobalizedRD,
         llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
             &MappedDeclsFields)
         : Loc(Loc), GlobalizedRD(GlobalizedRD),
           MappedDeclsFields(MappedDeclsFields) {}
     void Enter(CodeGenFunction &CGF) override {
       auto &Rt =
-          static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime());
+          static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime());
       if (GlobalizedRD) {
         auto I = Rt.FunctionGlobalizedDecls.try_emplace(CGF.CurFn).first;
         I->getSecond().GlobalRecord = GlobalizedRD;
         I->getSecond().MappedParams =
             std::make_unique<CodeGenFunction::OMPMapVars>();
         DeclToAddrMapTy &Data = I->getSecond().LocalVarData;
         for (const auto &Pair : MappedDeclsFields) {
           assert(Pair.getFirst()->isCanonicalDecl() &&
                  "Expected canonical declaration");
           Data.insert(std::make_pair(Pair.getFirst(),
                                      MappedVarData(Pair.getSecond(),
                                                    /*IsOnePerTeam=*/true)));
         }
       }
       Rt.emitGenericVarsProlog(CGF, Loc);
     }
     void Exit(CodeGenFunction &CGF) override {
-      static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime())
+      static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime())
           .emitGenericVarsEpilog(CGF);
     }
   } Action(Loc, GlobalizedRD, MappedDeclsFields);
   CodeGen.setAction(Action);
   llvm::Function *OutlinedFun = CGOpenMPRuntime::emitTeamsOutlinedFunction(
       D, ThreadIDVar, InnermostKind, CodeGen);
   if (CGM.getLangOpts().Optimize) {
     OutlinedFun->removeFnAttr(llvm::Attribute::NoInline);
     OutlinedFun->removeFnAttr(llvm::Attribute::OptimizeNone);
     OutlinedFun->addFnAttr(llvm::Attribute::AlwaysInline);
   }
 
   return OutlinedFun;
 }
 
-void CGOpenMPRuntimeNVPTX::emitGenericVarsProlog(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitGenericVarsProlog(CodeGenFunction &CGF,
                                                  SourceLocation Loc,
                                                  bool WithSPMDCheck) {
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic &&
-      getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD)
+  if (getDataSharingMode(CGM) != CGOpenMPRuntimeGPU::Generic &&
+      getExecutionMode() != CGOpenMPRuntimeGPU::EM_SPMD)
     return;
 
   CGBuilderTy &Bld = CGF.Builder;
 
   const auto I = FunctionGlobalizedDecls.find(CGF.CurFn);
   if (I == FunctionGlobalizedDecls.end())
     return;
   if (const RecordDecl *GlobalizedVarsRecord = I->getSecond().GlobalRecord) {
if (const RecordDecl *GlobalizedVarsRecord = I->getSecond().GlobalRecord) {
     GlobalRecordSize = llvm::alignTo(GlobalRecordSize, Alignment);
 
     llvm::PointerType *GlobalRecPtrTy =
         CGF.ConvertTypeForMem(GlobalRecTy)->getPointerTo();
     llvm::Value *GlobalRecCastAddr;
     llvm::Value *IsTTD = nullptr;
     if (!IsInTTDRegion &&
         (WithSPMDCheck ||
-         getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_Unknown)) {
+         getExecutionMode() == CGOpenMPRuntimeGPU::EM_Unknown)) {
       llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".exit");
       llvm::BasicBlock *SPMDBB = CGF.createBasicBlock(".spmd");
       llvm::BasicBlock *NonSPMDBB = CGF.createBasicBlock(".non-spmd");
       if (I->getSecond().SecondaryGlobalRecord.hasValue()) {
         llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
         llvm::Value *ThreadID = getThreadID(CGF, Loc);
         llvm::Value *PL = CGF.EmitRuntimeCall(
             createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_parallel_level),
if (!IsInTTDRegion &&
         llvm::Value *Ld = CGF.EmitLoadOfScalar(
             Address(RecSize, CGM.getSizeAlign()), /*Volatile=*/false,
             CGM.getContext().getSizeType(), Loc);
         llvm::Value *ResAddr = Bld.CreatePointerBitCastOrAddrSpaceCast(
             KernelStaticGlobalized, CGM.VoidPtrPtrTy);
         llvm::Value *GlobalRecordSizeArg[] = {
             llvm::ConstantInt::get(
                 CGM.Int16Ty,
-                getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD ? 1 : 0),
+                getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD ? 1 : 0),
             StaticGlobalized, Ld, IsInSharedMemory, ResAddr};
         CGF.EmitRuntimeCall(createNVPTXRuntimeFunction(
                                 OMPRTL_NVPTX__kmpc_get_team_static_memory),
                             GlobalRecordSizeArg);
         GlobalizedRecords.back().Buffer = StaticGlobalized;
         GlobalizedRecords.back().RecSize = RecSize;
         GlobalizedRecords.back().UseSharedMemory = UseSharedMemory;
         GlobalizedRecords.back().Loc = Loc;
for (auto &Rec : I->getSecond().LocalVarData) {
             Rec.second.FD->getType()->castAsArrayTypeUnsafe()->getElementType();
         VarAddr = CGF.MakeAddrLValue(
             Address(Ptr, CGM.getContext().getDeclAlign(Rec.first)), VarTy,
             AlignmentSource::Decl);
       }
       Rec.second.PrivateAddr = VarAddr.getAddress(CGF);
       if (!IsInTTDRegion &&
           (WithSPMDCheck ||
-           getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_Unknown)) {
+           getExecutionMode() == CGOpenMPRuntimeGPU::EM_Unknown)) {
         assert(I->getSecond().IsInSPMDModeFlag &&
                "Expected unknown execution mode or required SPMD check.");
         if (IsTTD) {
           assert(SecIt->second.IsOnePerTeam &&
                  "Secondary glob data must be one per team.");
           LValue SecVarAddr = CGF.EmitLValueForField(SecBase, SecIt->second.FD);
           VarAddr.setAddress(
               Address(Bld.CreateSelect(IsTTD, SecVarAddr.getPointer(CGF),
LValue Base = CGF.MakeAddrLValue(GlobalRecCastAddr, VD->getType(),
                                      AlignmentSource::Decl);
     I->getSecond().MappedParams->setVarAddr(CGF, cast<VarDecl>(VD),
                                             Base.getAddress(CGF));
     I->getSecond().EscapedVariableLengthDeclsAddrs.emplace_back(GlobalRecValue);
   }
   I->getSecond().MappedParams->apply(CGF);
 }
 
-void CGOpenMPRuntimeNVPTX::emitGenericVarsEpilog(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitGenericVarsEpilog(CodeGenFunction &CGF,
                                                  bool WithSPMDCheck) {
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic &&
-      getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD)
+  if (getDataSharingMode(CGM) != CGOpenMPRuntimeGPU::Generic &&
+      getExecutionMode() != CGOpenMPRuntimeGPU::EM_SPMD)
     return;
 
   const auto I = FunctionGlobalizedDecls.find(CGF.CurFn);
   if (I != FunctionGlobalizedDecls.end()) {
     I->getSecond().MappedParams->restore(CGF);
     if (!CGF.HaveInsertPoint())
       return;
     for (llvm::Value *Addr :
          llvm::reverse(I->getSecond().EscapedVariableLengthDeclsAddrs)) {
       CGF.EmitRuntimeCall(
           createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_data_sharing_pop_stack),
           Addr);
     }
     if (I->getSecond().GlobalRecordAddr) {
       if (!IsInTTDRegion &&
           (WithSPMDCheck ||
-           getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_Unknown)) {
+           getExecutionMode() == CGOpenMPRuntimeGPU::EM_Unknown)) {
         CGBuilderTy &Bld = CGF.Builder;
         llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".exit");
         llvm::BasicBlock *NonSPMDBB = CGF.createBasicBlock(".non-spmd");
         Bld.CreateCondBr(I->getSecond().IsInSPMDModeFlag, ExitBB, NonSPMDBB);
         // There is no need to emit line number for unconditional branch.
         (void)ApplyDebugLocation::CreateEmpty(CGF);
         CGF.EmitBlock(NonSPMDBB);
         CGF.EmitRuntimeCall(
if (I->getSecond().GlobalRecordAddr) {
               /*DestWidth=*/16, /*Signed=*/0);
           llvm::Value *IsInSharedMemory = CGF.EmitLoadOfScalar(
               Address(GlobalizedRecords.back().UseSharedMemory,
                       CGM.getContext().getTypeAlignInChars(Int16Ty)),
               /*Volatile=*/false, Int16Ty, GlobalizedRecords.back().Loc);
           llvm::Value *Args[] = {
               llvm::ConstantInt::get(
                   CGM.Int16Ty,
-                  getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD ? 1 : 0),
+                  getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD ? 1 : 0),
               IsInSharedMemory};
           CGF.EmitRuntimeCall(
               createNVPTXRuntimeFunction(
                   OMPRTL_NVPTX__kmpc_restore_team_static_memory),
               Args);
         }
       } else {
         CGF.EmitRuntimeCall(createNVPTXRuntimeFunction(
                                 OMPRTL_NVPTX__kmpc_data_sharing_pop_stack),
                             I->getSecond().GlobalRecordAddr);
       }
     }
   }
 }
 
-void CGOpenMPRuntimeNVPTX::emitTeamsCall(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitTeamsCall(CodeGenFunction &CGF,
                                          const OMPExecutableDirective &D,
                                          SourceLocation Loc,
                                          llvm::Function *OutlinedFn,
                                          ArrayRef<llvm::Value *> CapturedVars) {
   if (!CGF.HaveInsertPoint())
     return;
 
   Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
                                                       /*Name=*/".zero.addr");
   CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
   llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
   OutlinedFnArgs.push_back(emitThreadIDAddress(CGF, Loc).getPointer());
   OutlinedFnArgs.push_back(ZeroAddr.getPointer());
   OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end());
   emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, OutlinedFnArgs);
 }
 
-void CGOpenMPRuntimeNVPTX::emitParallelCall(
+void CGOpenMPRuntimeGPU::emitParallelCall(
     CodeGenFunction &CGF, SourceLocation Loc, llvm::Function *OutlinedFn,
     ArrayRef<llvm::Value *> CapturedVars, const Expr *IfCond) {
   if (!CGF.HaveInsertPoint())
     return;
 
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
+  if (getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD)
     emitSPMDParallelCall(CGF, Loc, OutlinedFn, CapturedVars, IfCond);
   else
     emitNonSPMDParallelCall(CGF, Loc, OutlinedFn, CapturedVars, IfCond);
 }
 
-void CGOpenMPRuntimeNVPTX::emitNonSPMDParallelCall(
+void CGOpenMPRuntimeGPU::emitNonSPMDParallelCall(
     CodeGenFunction &CGF, SourceLocation Loc, llvm::Value *OutlinedFn,
     ArrayRef<llvm::Value *> CapturedVars, const Expr *IfCond) {
   llvm::Function *Fn = cast<llvm::Function>(OutlinedFn);
 
   // Force inline this outlined function at its call site.
   Fn->setLinkage(llvm::GlobalValue::InternalLinkage);
 
   Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
auto &&CodeGen = [this, Fn, CapturedVars, Loc, &ThreadIDAddr](
     llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
     OutlinedFnArgs.push_back(ThreadIDAddr.getPointer());
     OutlinedFnArgs.push_back(ZeroAddr.getPointer());
     OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end());
     emitOutlinedFunctionCall(CGF, Loc, Fn, OutlinedFnArgs);
   };
   auto &&SeqGen = [this, &CodeGen, Loc](CodeGenFunction &CGF,
                                         PrePostActionTy &) {
 
     RegionCodeGenTy RCG(CodeGen);
     llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
     llvm::Value *ThreadID = getThreadID(CGF, Loc);
     llvm::Value *Args[] = {RTLoc, ThreadID};
 
     NVPTXActionTy Action(
         createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_serialized_parallel),
         Args,
if (IfCond) {
     emitIfClause(CGF, IfCond, LNParallelGen, SeqGen);
   } else {
     CodeGenFunction::RunCleanupsScope Scope(CGF);
     RegionCodeGenTy ThenRCG(LNParallelGen);
     ThenRCG(CGF);
   }
 }
 
-void CGOpenMPRuntimeNVPTX::emitSPMDParallelCall(
+void CGOpenMPRuntimeGPU::emitSPMDParallelCall(
     CodeGenFunction &CGF, SourceLocation Loc, llvm::Function *OutlinedFn,
     ArrayRef<llvm::Value *> CapturedVars, const Expr *IfCond) {
   // Just call the outlined function to execute the parallel region.
   // OutlinedFn(&GTid, &zero, CapturedStruct);
   //
   llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
 
   Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
auto &&CodeGen = [this, OutlinedFn, CapturedVars, Loc, &ThreadIDAddr](
     llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
     OutlinedFnArgs.push_back(ThreadIDAddr.getPointer());
     OutlinedFnArgs.push_back(ZeroAddr.getPointer());
     OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end());
     emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, OutlinedFnArgs);
   };
   auto &&SeqGen = [this, &CodeGen, Loc](CodeGenFunction &CGF,
                                         PrePostActionTy &) {
 
     RegionCodeGenTy RCG(CodeGen);
     llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
     llvm::Value *ThreadID = getThreadID(CGF, Loc);
     llvm::Value *Args[] = {RTLoc, ThreadID};
 
     NVPTXActionTy Action(
         createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_serialized_parallel),
         Args,
if (IsInTargetMasterThreadRegion) {
     // If we are not in the target region, it is definitely L2 parallelism or
     // more, because for SPMD mode we always has L1 parallel level, sowe don't
     // need to check for orphaned directives.
     RegionCodeGenTy RCG(SeqGen);
     RCG(CGF);
   }
 }
 
-void CGOpenMPRuntimeNVPTX::syncCTAThreads(CodeGenFunction &CGF) {
+void CGOpenMPRuntimeGPU::syncCTAThreads(CodeGenFunction &CGF) {
   // Always emit simple barriers!
   if (!CGF.HaveInsertPoint())
     return;
   // Build call __kmpc_barrier_simple_spmd(nullptr, 0);
   // This function does not use parameters, so we can emit just default values.
   llvm::Value *Args[] = {
       llvm::ConstantPointerNull::get(
           cast<llvm::PointerType>(getIdentTyPointerTy())),
       llvm::ConstantInt::get(CGF.Int32Ty, /*V=*/0, /*isSigned=*/true)};
   llvm::CallInst *Call = CGF.EmitRuntimeCall(
       createNVPTXRuntimeFunction(OMPRTL__kmpc_barrier_simple_spmd), Args);
   Call->setConvergent();
 }
 
-void CGOpenMPRuntimeNVPTX::emitBarrierCall(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitBarrierCall(CodeGenFunction &CGF,
                                            SourceLocation Loc,
                                            OpenMPDirectiveKind Kind, bool,
                                            bool) {
   // Always emit simple barriers!
   if (!CGF.HaveInsertPoint())
     return;
   // Build call __kmpc_cancel_barrier(loc, thread_id);
   unsigned Flags = getDefaultFlagsForBarriers(Kind);
   llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc, Flags),
                          getThreadID(CGF, Loc)};
   llvm::CallInst *Call = CGF.EmitRuntimeCall(
       createNVPTXRuntimeFunction(OMPRTL__kmpc_barrier), Args);
   Call->setConvergent();
 }
 
-void CGOpenMPRuntimeNVPTX::emitCriticalRegion(
+void CGOpenMPRuntimeGPU::emitCriticalRegion(
     CodeGenFunction &CGF, StringRef CriticalName,
     const RegionCodeGenTy &CriticalOpGen, SourceLocation Loc,
     const Expr *Hint) {
   llvm::BasicBlock *LoopBB = CGF.createBasicBlock("omp.critical.loop");
   llvm::BasicBlock *TestBB = CGF.createBasicBlock("omp.critical.test");
   llvm::BasicBlock *SyncBB = CGF.createBasicBlock("omp.critical.sync");
   llvm::BasicBlock *BodyBB = CGF.createBasicBlock("omp.critical.body");
   llvm::BasicBlock *ExitBB = CGF.createBasicBlock("omp.critical.exit");

 /// variables between lanes in a warp.
 static llvm::Value *createRuntimeShuffleFunction(CodeGenFunction &CGF,
                                                  llvm::Value *Elem,
                                                  QualType ElemType,
                                                  llvm::Value *Offset,
                                                  SourceLocation Loc) {
   CodeGenModule &CGM = CGF.CGM;
   CGBuilderTy &Bld = CGF.Builder;
-  CGOpenMPRuntimeNVPTX &RT =
-      *(static_cast<CGOpenMPRuntimeNVPTX *>(&CGM.getOpenMPRuntime()));
+  CGOpenMPRuntimeGPU &RT =
+      *(static_cast<CGOpenMPRuntimeGPU *>(&CGM.getOpenMPRuntime()));
 
   CharUnits Size = CGF.getContext().getTypeSizeInChars(ElemType);
   assert(Size.getQuantity() <= 8 &&
          "Unsupported bitwidth in shuffle instruction.");
 
   OpenMPRTLFunctionNVPTX ShuffleFn = Size.getQuantity() <= 4
                                          ? OMPRTL_NVPTX__kmpc_shuffle_int32
                                          : OMPRTL_NVPTX__kmpc_shuffle_int64;
 
   // Cast all types to 32- or 64-bit values before calling shuffle routines.
   QualType CastTy = CGF.getContext().getIntTypeForBitwidth(
       Size.getQuantity() <= 4 ? 32 : 64, /*Signed=*/1);
   llvm::Value *ElemCast = castValueToType(CGF, Elem, ElemType, CastTy, Loc);
   llvm::Value *WarpSize =
-      Bld.CreateIntCast(getNVPTXWarpSize(CGF), CGM.Int16Ty, /*isSigned=*/true);
+      Bld.CreateIntCast(RT.getGPUWarpSize(CGF), CGM.Int16Ty, /*isSigned=*/true);
 
   llvm::Value *ShuffledVal = CGF.EmitRuntimeCall(
       RT.createNVPTXRuntimeFunction(ShuffleFn), {ElemCast, Offset, WarpSize});
 
   return castValueToType(CGF, ShuffledVal, CastTy, ElemType, Loc);
 }
 
 static void shuffleAndStore(CodeGenFunction &CGF, Address SrcAddr,
for (const Expr *Private : Privates) {
     //
     // Warp master copies reduce element to transfer medium in __shared__
     // memory.
     //
     unsigned RealTySize =
         C.getTypeSizeInChars(Private->getType())
             .alignTo(C.getTypeAlignInChars(Private->getType()))
             .getQuantity();
     for (unsigned TySize = 4; TySize > 0 && RealTySize > 0; TySize /=2) {
       unsigned NumIters = RealTySize / TySize;
       if (NumIters == 0)
         continue;
       QualType CType = C.getIntTypeForBitwidth(
           C.toBits(CharUnits::fromQuantity(TySize)), /*Signed=*/1);
       llvm::Type *CopyType = CGF.ConvertTypeForMem(CType);
       CharUnits Align = CharUnits::fromQuantity(TySize);
       llvm::Value *Cnt = nullptr;
static llvm::Value *emitListToGlobalReduceFunction(
   llvm::Value *BufferArrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
       CGF.EmitLoadOfScalar(AddrBufferArg, /*Volatile=*/false, C.VoidPtrTy, Loc),
       LLVMReductionsBufferTy->getPointerTo());
 
   // 1. Build a list of reduction variables.
   // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]};
   Address ReductionList =
       CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list");
   auto IPriv = Privates.begin();
   llvm::Value *Idxs[] = {llvm::ConstantInt::getNullValue(CGF.Int32Ty),
                          CGF.EmitLoadOfScalar(CGF.GetAddrOfLocalVar(&IdxArg),
                                               /*Volatile=*/false, C.IntTy,
                                               Loc)};
   unsigned Idx = 0;
   for (unsigned I = 0, E = Privates.size(); I < E; ++I, ++IPriv, ++Idx) {
     Address Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
     // Global = Buffer.VD[Idx];
static llvm::Value *emitGlobalToListReduceFunction(
   llvm::Value *BufferArrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
       CGF.EmitLoadOfScalar(AddrBufferArg, /*Volatile=*/false, C.VoidPtrTy, Loc),
       LLVMReductionsBufferTy->getPointerTo());
 
   // 1. Build a list of reduction variables.
   // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]};
   Address ReductionList =
       CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list");
   auto IPriv = Privates.begin();
   llvm::Value *Idxs[] = {llvm::ConstantInt::getNullValue(CGF.Int32Ty),
                          CGF.EmitLoadOfScalar(CGF.GetAddrOfLocalVar(&IdxArg),
                                               /*Volatile=*/false, C.IntTy,
                                               Loc)};
   unsigned Idx = 0;
   for (unsigned I = 0, E = Privates.size(); I < E; ++I, ++IPriv, ++Idx) {
     Address Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
     // Global = Buffer.VD[Idx];

 /// The last team to write to the scratchpad array proceeds to reduce the
 /// scratchpad array.  One or more workers in the last team use the helper
 /// 'loadAndReduceDataFn' to load and reduce values from the array, i.e.,
 /// the k'th worker reduces every k'th element.
 ///
 /// Finally, a call is made to '__kmpc_nvptx_parallel_reduce_nowait_v2' to
 /// reduce across workers and compute a globally reduced value.
 ///
-void CGOpenMPRuntimeNVPTX::emitReduction(
+void CGOpenMPRuntimeGPU::emitReduction(
     CodeGenFunction &CGF, SourceLocation Loc, ArrayRef<const Expr *> Privates,
     ArrayRef<const Expr *> LHSExprs, ArrayRef<const Expr *> RHSExprs,
     ArrayRef<const Expr *> ReductionOps, ReductionOptionsTy Options) {
   if (!CGF.HaveInsertPoint())
     return;
 
   bool ParallelReduction = isOpenMPParallelDirective(Options.ReductionKind);
 #ifndef NDEBUG
if (E->getType()->isVariablyModifiedType())
       ++Size;
   }
   llvm::APInt ArraySize(/*unsigned int numBits=*/32, Size);
   QualType ReductionArrayTy =
       C.getConstantArrayType(C.VoidPtrTy, ArraySize, nullptr, ArrayType::Normal,
                              /*IndexTypeQuals=*/0);
   Address ReductionList =
       CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list");
   auto IPriv = Privates.begin();
   unsigned Idx = 0;
   for (unsigned I = 0, E = RHSExprs.size(); I < E; ++I, ++IPriv, ++Idx) {
     Address Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
     CGF.Builder.CreateStore(
         CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
             CGF.EmitLValue(RHSExprs[I]).getPointer(CGF), CGF.VoidPtrTy),
         Elem);
     if ((*IPriv)->getType()->isVariablyModifiedType()) {
#endif
   //    thread in each team.
   //    __kmpc_end_reduce{_nowait}(<gtid>);
   //    break;
   CGF.EmitBlock(ThenBB);
 
   // Add emission of __kmpc_end_reduce{_nowait}(<gtid>);
   auto &&CodeGen = [Privates, LHSExprs, RHSExprs, ReductionOps,
                     this](CodeGenFunction &CGF, PrePostActionTy &Action) {
     auto IPriv = Privates.begin();
     auto ILHS = LHSExprs.begin();
     auto IRHS = RHSExprs.begin();
     for (const Expr *E : ReductionOps) {
       emitSingleReductionCombiner(CGF, E, *IPriv, cast<DeclRefExpr>(*ILHS),
                                   cast<DeclRefExpr>(*IRHS));
       ++IPriv;
       ++ILHS;
       ++IRHS;
     }
   };
   llvm::Value *EndArgs[] = {ThreadId};
   RegionCodeGenTy RCG(CodeGen);
   NVPTXActionTy Action(
       nullptr, llvm::None,
       createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_end_reduce_nowait),
       EndArgs);
   RCG.setAction(Action);
   RCG(CGF);
   // There is no need to emit line number for unconditional branch.
   (void)ApplyDebugLocation::CreateEmpty(CGF);
   CGF.EmitBlock(ExitBB, /*IsFinished=*/true);
 }
 
 const VarDecl *
-CGOpenMPRuntimeNVPTX::translateParameter(const FieldDecl *FD,
+CGOpenMPRuntimeGPU::translateParameter(const FieldDecl *FD,
                                          const VarDecl *NativeParam) const {
   if (!NativeParam->getType()->isReferenceType())
     return NativeParam;
   QualType ArgType = NativeParam->getType();
   QualifierCollector QC;
   const Type *NonQualTy = QC.strip(ArgType);
   QualType PointeeTy = cast<ReferenceType>(NonQualTy)->getPointeeType();
   if (const auto *Attr = FD->getAttr<OMPCaptureKindAttr>()) {
     if (Attr->getCaptureKind() == OMPC_map) {
return ParmVarDecl::Create(
       CGM.getContext(),
       const_cast<DeclContext *>(NativeParam->getDeclContext()),
       NativeParam->getBeginLoc(), NativeParam->getLocation(),
       NativeParam->getIdentifier(), ArgType,
       /*TInfo=*/nullptr, SC_None, /*DefArg=*/nullptr);
 }
 
 Address
-CGOpenMPRuntimeNVPTX::getParameterAddress(CodeGenFunction &CGF,
+CGOpenMPRuntimeGPU::getParameterAddress(CodeGenFunction &CGF,
                                           const VarDecl *NativeParam,
                                           const VarDecl *TargetParam) const {
   assert(NativeParam != TargetParam &&
          NativeParam->getType()->isReferenceType() &&
          "Native arg must not be the same as target arg.");
   Address LocalAddr = CGF.GetAddrOfLocalVar(TargetParam);
   QualType NativeParamType = NativeParam->getType();
   QualifierCollector QC;
   const Type *NonQualTy = QC.strip(NativeParamType);
   QualType NativePointeeTy = cast<ReferenceType>(NonQualTy)->getPointeeType();
   unsigned NativePointeeAddrSpace =
       CGF.getContext().getTargetAddressSpace(NativePointeeTy);
   QualType TargetTy = TargetParam->getType();
   llvm::Value *TargetAddr = CGF.EmitLoadOfScalar(
       LocalAddr, /*Volatile=*/false, TargetTy, SourceLocation());
   // First cast to generic.
   TargetAddr = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
       TargetAddr, TargetAddr->getType()->getPointerElementType()->getPointerTo(
                       /*AddrSpace=*/0));
   // Cast from generic to native address space.
   TargetAddr = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
       TargetAddr, TargetAddr->getType()->getPointerElementType()->getPointerTo(
                       NativePointeeAddrSpace));
   Address NativeParamAddr = CGF.CreateMemTemp(NativeParamType);
   CGF.EmitStoreOfScalar(TargetAddr, NativeParamAddr, /*Volatile=*/false,
                         NativeParamType);
   return NativeParamAddr;
 }
 
-void CGOpenMPRuntimeNVPTX::emitOutlinedFunctionCall(
+void CGOpenMPRuntimeGPU::emitOutlinedFunctionCall(
     CodeGenFunction &CGF, SourceLocation Loc, llvm::FunctionCallee OutlinedFn,
     ArrayRef<llvm::Value *> Args) const {
   SmallVector<llvm::Value *, 4> TargetArgs;
   TargetArgs.reserve(Args.size());
   auto *FnType = OutlinedFn.getFunctionType();
   for (unsigned I = 0, E = Args.size(); I < E; ++I) {
     if (FnType->isVarArg() && FnType->getNumParams() <= I) {
       TargetArgs.append(std::next(Args.begin(), I), Args.end());
void CGOpenMPRuntimeGPU::emitOutlinedFunctionCall(
   }
   CGOpenMPRuntime::emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, TargetArgs);
 }
 
 /// Emit function which wraps the outline parallel region
 /// and controls the arguments which are passed to this function.
 /// The wrapper ensures that the outlined function is called
 /// with the correct arguments when data is shared.
-llvm::Function *CGOpenMPRuntimeNVPTX::createParallelDataSharingWrapper(
+llvm::Function *CGOpenMPRuntimeGPU::createParallelDataSharingWrapper(
     llvm::Function *OutlinedParallelFn, const OMPExecutableDirective &D) {
   ASTContext &Ctx = CGM.getContext();
   const auto &CS = *D.getCapturedStmt(OMPD_parallel);
 
   // Create a function that takes as argument the source thread.
   FunctionArgList WrapperArgs;
   QualType Int16QTy =
       Ctx.getIntTypeForBitwidth(/*DestWidth=*/16, /*Signed=*/false);
llvm::Function *CGOpenMPRuntimeGPU::createParallelDataSharingWrapper(
   CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
   // Get the array of arguments.
   SmallVector<llvm::Value *, 8> Args;
 
   Args.emplace_back(CGF.GetAddrOfLocalVar(&WrapperArg).getPointer());
   Args.emplace_back(ZeroAddr.getPointer());
 
   CGBuilderTy &Bld = CGF.Builder;
   auto CI = CS.capture_begin();
 
   // Use global memory for data sharing.
   // Handle passing of global args to workers.
   Address GlobalArgs =
       CGF.CreateDefaultAlignTempAlloca(CGF.VoidPtrPtrTy, "global_args");
   llvm::Value *GlobalArgsPtr = GlobalArgs.getPointer();
   llvm::Value *DataSharingArgs[] = {GlobalArgsPtr};
   CGF.EmitRuntimeCall(
if (CS.capture_size() > 0) {
     }
   }
 
   emitOutlinedFunctionCall(CGF, D.getBeginLoc(), OutlinedParallelFn, Args);
   CGF.FinishFunction();
   return Fn;
 }
 
-void CGOpenMPRuntimeNVPTX::emitFunctionProlog(CodeGenFunction &CGF,
+void CGOpenMPRuntimeGPU::emitFunctionProlog(CodeGenFunction &CGF,
                                               const Decl *D) {
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic)
+  if (getDataSharingMode(CGM) != CGOpenMPRuntimeGPU::Generic)
     return;
 
   assert(D && "Expected function or captured|block decl.");
   assert(FunctionGlobalizedDecls.count(CGF.CurFn) == 0 &&
          "Function is registered already.");
   assert((!TeamAndReductions.first || TeamAndReductions.first == D) &&
          "Team is set but not processed.");
   const Stmt *Body = nullptr;
   bool NeedToDelayGlobalization = false;
   if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
     Body = FD->getBody();
   } else if (const auto *BD = dyn_cast<BlockDecl>(D)) {
     Body = BD->getBody();
   } else if (const auto *CD = dyn_cast<CapturedDecl>(D)) {
     Body = CD->getBody();
     NeedToDelayGlobalization = CGF.CapturedStmtInfo->getKind() == CR_OpenMP;
     if (NeedToDelayGlobalization &&
-        getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
+        getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD)
       return;
   }
   if (!Body)
     return;
   CheckVarsEscapingDeclContext VarChecker(CGF, TeamAndReductions.second);
   VarChecker.Visit(Body);
   const RecordDecl *GlobalizedVarsRecord =
       VarChecker.getGlobalizedRecord(IsInTTDRegion);
   TeamAndReductions.first = nullptr;
   TeamAndReductions.second.clear();
   ArrayRef<const ValueDecl *> EscapedVariableLengthDecls =
       VarChecker.getEscapedVariableLengthDecls();
   if (!GlobalizedVarsRecord && EscapedVariableLengthDecls.empty())
     return;
   auto I = FunctionGlobalizedDecls.try_emplace(CGF.CurFn).first;
   I->getSecond().MappedParams =
       std::make_unique<CodeGenFunction::OMPMapVars>();
   I->getSecond().GlobalRecord = GlobalizedVarsRecord;
   I->getSecond().EscapedParameters.insert(
       VarChecker.getEscapedParameters().begin(),
       VarChecker.getEscapedParameters().end());
   I->getSecond().EscapedVariableLengthDecls.append(
       EscapedVariableLengthDecls.begin(), EscapedVariableLengthDecls.end());
   DeclToAddrMapTy &Data = I->getSecond().LocalVarData;
if (!IsInTTDRegion && !NeedToDelayGlobalization && !IsInParallelRegion) {
     }
   }
   if (!NeedToDelayGlobalization) {
     emitGenericVarsProlog(CGF, D->getBeginLoc(), /*WithSPMDCheck=*/true);
     struct GlobalizationScope final : EHScopeStack::Cleanup {
       GlobalizationScope() = default;
 
       void Emit(CodeGenFunction &CGF, Flags flags) override {
-        static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime())
+        static_cast<CGOpenMPRuntimeGPU &>(CGF.CGM.getOpenMPRuntime())
             .emitGenericVarsEpilog(CGF, /*WithSPMDCheck=*/true);
       }
     };
     CGF.EHStack.pushCleanup<GlobalizationScope>(NormalAndEHCleanup);
   }
 }
 
-Address CGOpenMPRuntimeNVPTX::getAddressOfLocalVariable(CodeGenFunction &CGF,
+Address CGOpenMPRuntimeGPU::getAddressOfLocalVariable(CodeGenFunction &CGF,
                                                         const VarDecl *VD) {
   if (VD && VD->hasAttr<OMPAllocateDeclAttr>()) {
     const auto *A = VD->getAttr<OMPAllocateDeclAttr>();
     switch (A->getAllocatorType()) {
       // Use the default allocator here as by default local vars are
       // threadlocal.
     case OMPAllocateDeclAttr::OMPNullMemAlloc:
     case OMPAllocateDeclAttr::OMPDefaultMemAlloc:
     case OMPAllocateDeclAttr::OMPThreadMemAlloc:
case OMPAllocateDeclAttr::OMPCGroupMemAlloc: {
           llvm::Constant::getNullValue(VarTy), VD->getName());
       CharUnits Align = CGM.getContext().getDeclAlign(VD);
       GV->setAlignment(Align.getAsAlign());
       return Address(GV, Align);
     }
     }
   }
 
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic)
+  if (getDataSharingMode(CGM) != CGOpenMPRuntimeGPU::Generic)
     return Address::invalid();
 
   VD = VD->getCanonicalDecl();
   auto I = FunctionGlobalizedDecls.find(CGF.CurFn);
   if (I == FunctionGlobalizedDecls.end())
     return Address::invalid();
   auto VDI = I->getSecond().LocalVarData.find(VD);
   if (VDI != I->getSecond().LocalVarData.end())
     return VDI->second.PrivateAddr;
   if (VD->hasAttrs()) {
     for (specific_attr_iterator<OMPReferencedVarAttr> IT(VD->attr_begin()),
          E(VD->attr_end());
          IT != E; ++IT) {
       auto VDI = I->getSecond().LocalVarData.find(
           cast<VarDecl>(cast<DeclRefExpr>(IT->getRef())->getDecl())
               ->getCanonicalDecl());
       if (VDI != I->getSecond().LocalVarData.end())
         return VDI->second.PrivateAddr;
     }
   }
 
   return Address::invalid();
 }
 
-void CGOpenMPRuntimeNVPTX::functionFinished(CodeGenFunction &CGF) {
+void CGOpenMPRuntimeGPU::functionFinished(CodeGenFunction &CGF) {
   FunctionGlobalizedDecls.erase(CGF.CurFn);
   CGOpenMPRuntime::functionFinished(CGF);
 }
 
-void CGOpenMPRuntimeNVPTX::getDefaultDistScheduleAndChunk(
+void CGOpenMPRuntimeGPU::getDefaultDistScheduleAndChunk(
     CodeGenFunction &CGF, const OMPLoopDirective &S,
     OpenMPDistScheduleClauseKind &ScheduleKind,
     llvm::Value *&Chunk) const {
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD) {
+  if (getExecutionMode() == CGOpenMPRuntimeGPU::EM_SPMD) {
     ScheduleKind = OMPC_DIST_SCHEDULE_static;
     Chunk = CGF.EmitScalarConversion(getNVPTXNumThreads(CGF),
         CGF.getContext().getIntTypeForBitwidth(32, /*Signed=*/0),
         S.getIterationVariable()->getType(), S.getBeginLoc());
     return;
   }
   CGOpenMPRuntime::getDefaultDistScheduleAndChunk(
       CGF, S, ScheduleKind, Chunk);
 }
 
-void CGOpenMPRuntimeNVPTX::getDefaultScheduleAndChunk(
+void CGOpenMPRuntimeGPU::getDefaultScheduleAndChunk(
     CodeGenFunction &CGF, const OMPLoopDirective &S,
     OpenMPScheduleClauseKind &ScheduleKind,
     const Expr *&ChunkExpr) const {
   ScheduleKind = OMPC_SCHEDULE_static;
   // Chunk size is 1 in this case.
   llvm::APInt ChunkSize(32, 1);
   ChunkExpr = IntegerLiteral::Create(CGF.getContext(), ChunkSize,
       CGF.getContext().getIntTypeForBitwidth(32, /*Signed=*/0),
       SourceLocation());
 }
 
-void CGOpenMPRuntimeNVPTX::adjustTargetSpecificDataForLambdas(
+void CGOpenMPRuntimeGPU::adjustTargetSpecificDataForLambdas(
     CodeGenFunction &CGF, const OMPExecutableDirective &D) const {
   assert(isOpenMPTargetExecutionDirective(D.getDirectiveKind()) &&
          " Expected target-based directive.");
   const CapturedStmt *CS = D.getCapturedStmt(OMPD_target);
   for (const CapturedStmt::Capture &C : CS->captures()) {
     // Capture variables captured by reference in lambdas for target-based
     // directives.
     if (!C.capturesVariable())
for (const LambdaCapture &LC : RD->captures()) {
         VDAddr = CGF.EmitLoadOfReferenceLValue(VDAddr,
                                                VD->getType().getCanonicalType())
                      .getAddress(CGF);
       CGF.EmitStoreOfScalar(VDAddr.getPointer(), VarLVal);
     }
   }
 }
 
-unsigned CGOpenMPRuntimeNVPTX::getDefaultFirstprivateAddressSpace() const {
+unsigned CGOpenMPRuntimeGPU::getDefaultFirstprivateAddressSpace() const {
   return CGM.getContext().getTargetAddressSpace(LangAS::cuda_constant);
 }
 
-bool CGOpenMPRuntimeNVPTX::hasAllocateAttributeForGlobalVar(const VarDecl *VD,
+bool CGOpenMPRuntimeGPU::hasAllocateAttributeForGlobalVar(const VarDecl *VD,
                                                             LangAS &AS) {
   if (!VD || !VD->hasAttr<OMPAllocateDeclAttr>())
     return false;
   const auto *A = VD->getAttr<OMPAllocateDeclAttr>();
   switch(A->getAllocatorType()) {
   case OMPAllocateDeclAttr::OMPNullMemAlloc:
   case OMPAllocateDeclAttr::OMPDefaultMemAlloc:
   // Not supported, fallback to the default mem space.
   case OMPAllocateDeclAttr::OMPThreadMemAlloc:
   case OMPAllocateDeclAttr::OMPLargeCapMemAlloc:
   case OMPAllocateDeclAttr::OMPCGroupMemAlloc:
   case OMPAllocateDeclAttr::OMPHighBWMemAlloc:
   case OMPAllocateDeclAttr::OMPLowLatMemAlloc:
if (Feature.getValue()) {
         return Arch;
     }
   }
   return CudaArch::UNKNOWN;
 }
 
 /// Check to see if target architecture supports unified addressing which is
 /// a restriction for OpenMP requires clause "unified_shared_memory".
-void CGOpenMPRuntimeNVPTX::processRequiresDirective(
+void CGOpenMPRuntimeGPU::processRequiresDirective(
     const OMPRequiresDecl *D) {
   for (const OMPClause *Clause : D->clauselists()) {
     if (Clause->getClauseKind() == OMPC_unified_shared_memory) {
       CudaArch Arch = getCudaArch(CGM);
       switch (Arch) {
       case CudaArch::SM_20:
       case CudaArch::SM_21:
       case CudaArch::SM_30:
static std::pair<unsigned, unsigned> getSMsBlocksPerSM(CodeGenModule &CGM) {
   case CudaArch::UNKNOWN:
     break;
   case CudaArch::LAST:
     llvm_unreachable("Unexpected Cuda arch.");
   }
   llvm_unreachable("Unexpected NVPTX target without ptx feature.");
 }
 
-void CGOpenMPRuntimeNVPTX::clear() {
+void CGOpenMPRuntimeGPU::clear() {
   if (!GlobalizedRecords.empty() &&
       !CGM.getLangOpts().OpenMPCUDATargetParallel) {
     ASTContext &C = CGM.getContext();
     llvm::SmallVector<const GlobalPtrSizeRecsTy *, 4> GlobalRecs;
     llvm::SmallVector<const GlobalPtrSizeRecsTy *, 4> SharedRecs;
     RecordDecl *StaticRD = C.buildImplicitRecord(
         "_openmp_static_memory_type_$_", RecordDecl::TagKind::TTK_Union);
     StaticRD->startDefinition();

clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.h

 //===----- CGOpenMPRuntimeNVPTX.h - Interface to OpenMP NVPTX Runtimes ----===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This provides a class for OpenMP runtime code generation specialized to NVPTX
-// targets.
+// targets from generalized CGOpenMPRuntimeGPU class.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMENVPTX_H
 #define LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMENVPTX_H
 
 #include "CGOpenMPRuntime.h"
+#include "CGOpenMPRuntimeGPU.h"
 #include "CodeGenFunction.h"
 #include "clang/AST/StmtOpenMP.h"
 
 namespace clang {
 namespace CodeGen {
 
-class CGOpenMPRuntimeNVPTX : public CGOpenMPRuntime {
-public:
-  /// Defines the execution mode.
-  enum ExecutionMode {
-    /// SPMD execution mode (all threads are worker threads).
-    EM_SPMD,
-    /// Non-SPMD execution mode (1 master thread, others are workers).
-    EM_NonSPMD,
-    /// Unknown execution mode (orphaned directive).
-    EM_Unknown,
-  };
-private:
-  /// Parallel outlined function work for workers to execute.
-  llvm::SmallVector<llvm::Function *, 16> Work;
-
-  struct EntryFunctionState {
-    llvm::BasicBlock *ExitBB = nullptr;
-  };
-
-  class WorkerFunctionState {
-  public:
-    llvm::Function *WorkerFn;
-    const CGFunctionInfo &CGFI;
-    SourceLocation Loc;
-
-    WorkerFunctionState(CodeGenModule &CGM, SourceLocation Loc);
-
-  private:
-    void createWorkerFunction(CodeGenModule &CGM);
-  };
-
-  ExecutionMode getExecutionMode() const;
-
-  bool requiresFullRuntime() const { return RequiresFullRuntime; }
-
-  /// Get barrier to synchronize all threads in a block.
-  void syncCTAThreads(CodeGenFunction &CGF);
-
-  /// Emit the worker function for the current target region.
-  void emitWorkerFunction(WorkerFunctionState &WST);
-
-  /// Helper for worker function. Emit body of worker loop.
-  void emitWorkerLoop(CodeGenFunction &CGF, WorkerFunctionState &WST);
-
-  /// Helper for non-SPMD target entry function. Guide the master and
-  /// worker threads to their respective locations.
-  void emitNonSPMDEntryHeader(CodeGenFunction &CGF, EntryFunctionState &EST,
-                              WorkerFunctionState &WST);
-
-  /// Signal termination of OMP execution for non-SPMD target entry
-  /// function.
-  void emitNonSPMDEntryFooter(CodeGenFunction &CGF, EntryFunctionState &EST);
-
-  /// Helper for generic variables globalization prolog.
-  void emitGenericVarsProlog(CodeGenFunction &CGF, SourceLocation Loc,
-                             bool WithSPMDCheck = false);
-
-  /// Helper for generic variables globalization epilog.
-  void emitGenericVarsEpilog(CodeGenFunction &CGF, bool WithSPMDCheck = false);
-
-  /// Helper for SPMD mode target directive's entry function.
-  void emitSPMDEntryHeader(CodeGenFunction &CGF, EntryFunctionState &EST,
-                           const OMPExecutableDirective &D);
-
-  /// Signal termination of SPMD mode execution.
-  void emitSPMDEntryFooter(CodeGenFunction &CGF, EntryFunctionState &EST);
-
-  //
-  // Base class overrides.
-  //
-
-  /// Creates offloading entry for the provided entry ID \a ID,
-  /// address \a Addr, size \a Size, and flags \a Flags.
-  void createOffloadEntry(llvm::Constant *ID, llvm::Constant *Addr,
-                          uint64_t Size, int32_t Flags,
-                          llvm::GlobalValue::LinkageTypes Linkage) override;
-
-  /// Emit outlined function specialized for the Fork-Join
-  /// programming model for applicable target directives on the NVPTX device.
-  /// \param D Directive to emit.
-  /// \param ParentName Name of the function that encloses the target region.
-  /// \param OutlinedFn Outlined function value to be defined by this call.
-  /// \param OutlinedFnID Outlined function ID value to be defined by this call.
-  /// \param IsOffloadEntry True if the outlined function is an offload entry.
-  /// An outlined function may not be an entry if, e.g. the if clause always
-  /// evaluates to false.
-  void emitNonSPMDKernel(const OMPExecutableDirective &D, StringRef ParentName,
-                         llvm::Function *&OutlinedFn,
-                         llvm::Constant *&OutlinedFnID, bool IsOffloadEntry,
-                         const RegionCodeGenTy &CodeGen);
-
-  /// Emit outlined function specialized for the Single Program
-  /// Multiple Data programming model for applicable target directives on the
-  /// NVPTX device.
-  /// \param D Directive to emit.
-  /// \param ParentName Name of the function that encloses the target region.
-  /// \param OutlinedFn Outlined function value to be defined by this call.
-  /// \param OutlinedFnID Outlined function ID value to be defined by this call.
-  /// \param IsOffloadEntry True if the outlined function is an offload entry.
-  /// \param CodeGen Object containing the target statements.
-  /// An outlined function may not be an entry if, e.g. the if clause always
-  /// evaluates to false.
-  void emitSPMDKernel(const OMPExecutableDirective &D, StringRef ParentName,
-                      llvm::Function *&OutlinedFn,
-                      llvm::Constant *&OutlinedFnID, bool IsOffloadEntry,
-                      const RegionCodeGenTy &CodeGen);
-
-  /// Emit outlined function for 'target' directive on the NVPTX
-  /// device.
-  /// \param D Directive to emit.
-  /// \param ParentName Name of the function that encloses the target region.
-  /// \param OutlinedFn Outlined function value to be defined by this call.
-  /// \param OutlinedFnID Outlined function ID value to be defined by this call.
-  /// \param IsOffloadEntry True if the outlined function is an offload entry.
-  /// An outlined function may not be an entry if, e.g. the if clause always
-  /// evaluates to false.
-  void emitTargetOutlinedFunction(const OMPExecutableDirective &D,
-                                  StringRef ParentName,
-                                  llvm::Function *&OutlinedFn,
-                                  llvm::Constant *&OutlinedFnID,
-                                  bool IsOffloadEntry,
-                                  const RegionCodeGenTy &CodeGen) override;
-
-  /// Emits code for parallel or serial call of the \a OutlinedFn with
-  /// variables captured in a record which address is stored in \a
-  /// CapturedStruct.
-  /// This call is for the Non-SPMD Execution Mode.
-  /// \param OutlinedFn Outlined function to be run in parallel threads. Type of
-  /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*).
-  /// \param CapturedVars A pointer to the record with the references to
-  /// variables used in \a OutlinedFn function.
-  /// \param IfCond Condition in the associated 'if' clause, if it was
-  /// specified, nullptr otherwise.
-  void emitNonSPMDParallelCall(CodeGenFunction &CGF, SourceLocation Loc,
-                               llvm::Value *OutlinedFn,
-                               ArrayRef<llvm::Value *> CapturedVars,
-                               const Expr *IfCond);
-
-  /// Emits code for parallel or serial call of the \a OutlinedFn with
-  /// variables captured in a record which address is stored in \a
-  /// CapturedStruct.
-  /// This call is for a parallel directive within an SPMD target directive.
-  /// \param OutlinedFn Outlined function to be run in parallel threads. Type of
-  /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*).
-  /// \param CapturedVars A pointer to the record with the references to
-  /// variables used in \a OutlinedFn function.
-  /// \param IfCond Condition in the associated 'if' clause, if it was
-  /// specified, nullptr otherwise.
-  ///
-  void emitSPMDParallelCall(CodeGenFunction &CGF, SourceLocation Loc,
-                            llvm::Function *OutlinedFn,
-                            ArrayRef<llvm::Value *> CapturedVars,
-                            const Expr *IfCond);
-
-protected:
-  /// Get the function name of an outlined region.
-  //  The name can be customized depending on the target.
-  //
-  StringRef getOutlinedHelperName() const override {
-    return "__omp_outlined__";
-  }
-
-  /// Check if the default location must be constant.
-  /// Constant for NVPTX for better optimization.
-  bool isDefaultLocationConstant() const override { return true; }
-
-  /// Returns additional flags that can be stored in reserved_2 field of the
-  /// default location.
-  /// For NVPTX target contains data about SPMD/Non-SPMD execution mode +
-  /// Full/Lightweight runtime mode. Used for better optimization.
-  unsigned getDefaultLocationReserved2Flags() const override;
+class CGOpenMPRuntimeNVPTX : public CGOpenMPRuntimeGPU {
 
 public:
   explicit CGOpenMPRuntimeNVPTX(CodeGenModule &CGM);
-  void clear() override;
-
-  /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32
-  /// global_tid, int proc_bind) to generate code for 'proc_bind' clause.
-  virtual void emitProcBindClause(CodeGenFunction &CGF,
-                                  llvm::omp::ProcBindKind ProcBind,
-                                  SourceLocation Loc) override;
-
-  /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32
-  /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads'
-  /// clause.
-  /// \param NumThreads An integer value of threads.
-  virtual void emitNumThreadsClause(CodeGenFunction &CGF,
-                                    llvm::Value *NumThreads,
-                                    SourceLocation Loc) override;
-
-  /// This function ought to emit, in the general case, a call to
-  // the openmp runtime kmpc_push_num_teams. In NVPTX backend it is not needed
-  // as these numbers are obtained through the PTX grid and block configuration.
-  /// \param NumTeams An integer expression of teams.
-  /// \param ThreadLimit An integer expression of threads.
-  void emitNumTeamsClause(CodeGenFunction &CGF, const Expr *NumTeams,
-                          const Expr *ThreadLimit, SourceLocation Loc) override;
-
-  /// Emits inlined function for the specified OpenMP parallel
-  //  directive.
-  /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID,
-  /// kmp_int32 BoundID, struct context_vars*).
-  /// \param D OpenMP directive.
-  /// \param ThreadIDVar Variable for thread id in the current OpenMP region.
-  /// \param InnermostKind Kind of innermost directive (for simple directives it
-  /// is a directive itself, for combined - its innermost directive).
-  /// \param CodeGen Code generation sequence for the \a D directive.
-  llvm::Function *
-  emitParallelOutlinedFunction(const OMPExecutableDirective &D,
-                               const VarDecl *ThreadIDVar,
-                               OpenMPDirectiveKind InnermostKind,
-                               const RegionCodeGenTy &CodeGen) override;
-
-  /// Emits inlined function for the specified OpenMP teams
-  //  directive.
-  /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID,
-  /// kmp_int32 BoundID, struct context_vars*).
-  /// \param D OpenMP directive.
-  /// \param ThreadIDVar Variable for thread id in the current OpenMP region.
-  /// \param InnermostKind Kind of innermost directive (for simple directives it
-  /// is a directive itself, for combined - its innermost directive).
-  /// \param CodeGen Code generation sequence for the \a D directive.
-  llvm::Function *
-  emitTeamsOutlinedFunction(const OMPExecutableDirective &D,
-                            const VarDecl *ThreadIDVar,
-                            OpenMPDirectiveKind InnermostKind,
-                            const RegionCodeGenTy &CodeGen) override;
-
-  /// Emits code for teams call of the \a OutlinedFn with
-  /// variables captured in a record which address is stored in \a
-  /// CapturedStruct.
-  /// \param OutlinedFn Outlined function to be run by team masters. Type of
-  /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*).
-  /// \param CapturedVars A pointer to the record with the references to
-  /// variables used in \a OutlinedFn function.
-  ///
-  void emitTeamsCall(CodeGenFunction &CGF, const OMPExecutableDirective &D,
-                     SourceLocation Loc, llvm::Function *OutlinedFn,
-                     ArrayRef<llvm::Value *> CapturedVars) override;
-
-  /// Emits code for parallel or serial call of the \a OutlinedFn with
-  /// variables captured in a record which address is stored in \a
-  /// CapturedStruct.
-  /// \param OutlinedFn Outlined function to be run in parallel threads. Type of
-  /// this function is void(*)(kmp_int32 *, kmp_int32, struct context_vars*).
-  /// \param CapturedVars A pointer to the record with the references to
-  /// variables used in \a OutlinedFn function.
-  /// \param IfCond Condition in the associated 'if' clause, if it was
-  /// specified, nullptr otherwise.
-  void emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc,
-                        llvm::Function *OutlinedFn,
-                        ArrayRef<llvm::Value *> CapturedVars,
-                        const Expr *IfCond) override;
-
-  /// Emit an implicit/explicit barrier for OpenMP threads.
-  /// \param Kind Directive for which this implicit barrier call must be
-  /// generated. Must be OMPD_barrier for explicit barrier generation.
-  /// \param EmitChecks true if need to emit checks for cancellation barriers.
-  /// \param ForceSimpleCall true simple barrier call must be emitted, false if
-  /// runtime class decides which one to emit (simple or with cancellation
-  /// checks).
-  ///
-  void emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc,
-                       OpenMPDirectiveKind Kind, bool EmitChecks = true,
-                       bool ForceSimpleCall = false) override;
-
-  /// Emits a critical region.
-  /// \param CriticalName Name of the critical region.
-  /// \param CriticalOpGen Generator for the statement associated with the given
-  /// critical region.
-  /// \param Hint Value of the 'hint' clause (optional).
-  void emitCriticalRegion(CodeGenFunction &CGF, StringRef CriticalName,
-                          const RegionCodeGenTy &CriticalOpGen,
-                          SourceLocation Loc,
-                          const Expr *Hint = nullptr) override;
-
-  /// Emit a code for reduction clause.
-  ///
-  /// \param Privates List of private copies for original reduction arguments.
-  /// \param LHSExprs List of LHS in \a ReductionOps reduction operations.
-  /// \param RHSExprs List of RHS in \a ReductionOps reduction operations.
-  /// \param ReductionOps List of reduction operations in form 'LHS binop RHS'
-  /// or 'operator binop(LHS, RHS)'.
-  /// \param Options List of options for reduction codegen:
-  ///     WithNowait true if parent directive has also nowait clause, false
-  ///     otherwise.
-  ///     SimpleReduction Emit reduction operation only. Used for omp simd
-  ///     directive on the host.
-  ///     ReductionKind The kind of reduction to perform.
-  virtual void emitReduction(CodeGenFunction &CGF, SourceLocation Loc,
-                             ArrayRef<const Expr *> Privates,
-                             ArrayRef<const Expr *> LHSExprs,
-                             ArrayRef<const Expr *> RHSExprs,
-                             ArrayRef<const Expr *> ReductionOps,
-                             ReductionOptionsTy Options) override;
-
-  /// Returns specified OpenMP runtime function for the current OpenMP
-  /// implementation.  Specialized for the NVPTX device.
-  /// \param Function OpenMP runtime function.
-  /// \return Specified function.
-  llvm::FunctionCallee createNVPTXRuntimeFunction(unsigned Function);
-
-  /// Translates the native parameter of outlined function if this is required
-  /// for target.
-  /// \param FD Field decl from captured record for the parameter.
-  /// \param NativeParam Parameter itself.
-  const VarDecl *translateParameter(const FieldDecl *FD,
-                                    const VarDecl *NativeParam) const override;
-
-  /// Gets the address of the native argument basing on the address of the
-  /// target-specific parameter.
-  /// \param NativeParam Parameter itself.
-  /// \param TargetParam Corresponding target-specific parameter.
-  Address getParameterAddress(CodeGenFunction &CGF, const VarDecl *NativeParam,
-                              const VarDecl *TargetParam) const override;
-
-  /// Emits call of the outlined function with the provided arguments,
-  /// translating these arguments to correct target-specific arguments.
-  void emitOutlinedFunctionCall(
-      CodeGenFunction &CGF, SourceLocation Loc, llvm::FunctionCallee OutlinedFn,
-      ArrayRef<llvm::Value *> Args = llvm::None) const override;
-
-  /// Emits OpenMP-specific function prolog.
-  /// Required for device constructs.
-  void emitFunctionProlog(CodeGenFunction &CGF, const Decl *D) override;
-
-  /// Gets the OpenMP-specific address of the local variable.
-  Address getAddressOfLocalVariable(CodeGenFunction &CGF,
-                                    const VarDecl *VD) override;
-
-  /// Target codegen is specialized based on two data-sharing modes: CUDA, in
-  /// which the local variables are actually global threadlocal, and Generic, in
-  /// which the local variables are placed in global memory if they may escape
-  /// their declaration context.
-  enum DataSharingMode {
-    /// CUDA data sharing mode.
-    CUDA,
-    /// Generic data-sharing mode.
-    Generic,
-  };
-
-  /// Cleans up references to the objects in finished function.
-  ///
-  void functionFinished(CodeGenFunction &CGF) override;
-
-  /// Choose a default value for the dist_schedule clause.
-  void getDefaultDistScheduleAndChunk(CodeGenFunction &CGF,
-      const OMPLoopDirective &S, OpenMPDistScheduleClauseKind &ScheduleKind,
-      llvm::Value *&Chunk) const override;
-
-  /// Choose a default value for the schedule clause.
-  void getDefaultScheduleAndChunk(CodeGenFunction &CGF,
-      const OMPLoopDirective &S, OpenMPScheduleClauseKind &ScheduleKind,
-      const Expr *&ChunkExpr) const override;
-
-  /// Adjust some parameters for the target-based directives, like addresses of
-  /// the variables captured by reference in lambdas.
-  void adjustTargetSpecificDataForLambdas(
-      CodeGenFunction &CGF, const OMPExecutableDirective &D) const override;
-
-  /// Perform check on requires decl to ensure that target architecture
-  /// supports unified addressing
-  void processRequiresDirective(const OMPRequiresDecl *D) override;
-
-  /// Returns default address space for the constant firstprivates, __constant__
-  /// address space by default.
-  unsigned getDefaultFirstprivateAddressSpace() const override;
-
-  /// Checks if the variable has associated OMPAllocateDeclAttr attribute with
-  /// the predefined allocator and translates it into the corresponding address
-  /// space.
-  bool hasAllocateAttributeForGlobalVar(const VarDecl *VD, LangAS &AS) override;
-
-private:
-  /// Track the execution mode when codegening directives within a target
-  /// region. The appropriate mode (SPMD/NON-SPMD) is set on entry to the
-  /// target region and used by containing directives such as 'parallel'
-  /// to emit optimized code.
-  ExecutionMode CurrentExecutionMode = EM_Unknown;
-
-  /// Check if the full runtime is required (default - yes).
-  bool RequiresFullRuntime = true;
-
-  /// true if we're emitting the code for the target region and next parallel
-  /// region is L0 for sure.
-  bool IsInTargetMasterThreadRegion = false;
-  /// true if currently emitting code for target/teams/distribute region, false
-  /// - otherwise.
-  bool IsInTTDRegion = false;
-  /// true if we're definitely in the parallel region.
-  bool IsInParallelRegion = false;
-
-  /// Map between an outlined function and its wrapper.
-  llvm::DenseMap<llvm::Function *, llvm::Function *> WrapperFunctionsMap;
-
-  /// Emit function which wraps the outline parallel region
-  /// and controls the parameters which are passed to this function.
-  /// The wrapper ensures that the outlined function is called
-  /// with the correct arguments when data is shared.
-  llvm::Function *createParallelDataSharingWrapper(
-      llvm::Function *OutlinedParallelFn, const OMPExecutableDirective &D);
-
-  /// The data for the single globalized variable.
-  struct MappedVarData {
-    /// Corresponding field in the global record.
-    const FieldDecl *FD = nullptr;
-    /// Corresponding address.
-    Address PrivateAddr = Address::invalid();
-    /// true, if only one element is required (for latprivates in SPMD mode),
-    /// false, if need to create based on the warp-size.
-    bool IsOnePerTeam = false;
-    MappedVarData() = delete;
-    MappedVarData(const FieldDecl *FD, bool IsOnePerTeam = false)
-        : FD(FD), IsOnePerTeam(IsOnePerTeam) {}
-  };
-  /// The map of local variables to their addresses in the global memory.
-  using DeclToAddrMapTy = llvm::MapVector<const Decl *, MappedVarData>;
-  /// Set of the parameters passed by value escaping OpenMP context.
-  using EscapedParamsTy = llvm::SmallPtrSet<const Decl *, 4>;
-  struct FunctionData {
-    DeclToAddrMapTy LocalVarData;
-    llvm::Optional<DeclToAddrMapTy> SecondaryLocalVarData = llvm::None;
-    EscapedParamsTy EscapedParameters;
-    llvm::SmallVector<const ValueDecl*, 4> EscapedVariableLengthDecls;
-    llvm::SmallVector<llvm::Value *, 4> EscapedVariableLengthDeclsAddrs;
-    const RecordDecl *GlobalRecord = nullptr;
-    llvm::Optional<const RecordDecl *> SecondaryGlobalRecord = llvm::None;
-    llvm::Value *GlobalRecordAddr = nullptr;
-    llvm::Value *IsInSPMDModeFlag = nullptr;
-    std::unique_ptr<CodeGenFunction::OMPMapVars> MappedParams;
-  };
-  /// Maps the function to the list of the globalized variables with their
-  /// addresses.
-  llvm::SmallDenseMap<llvm::Function *, FunctionData> FunctionGlobalizedDecls;
-  /// List of records for the globalized variables in target/teams/distribute
-  /// contexts. Inner records are going to be joined into the single record,
-  /// while those resulting records are going to be joined into the single
-  /// union. This resulting union (one per CU) is the entry point for the static
-  /// memory management runtime functions.
-  struct GlobalPtrSizeRecsTy {
-    llvm::GlobalVariable *UseSharedMemory = nullptr;
-    llvm::GlobalVariable *RecSize = nullptr;
-    llvm::GlobalVariable *Buffer = nullptr;
-    SourceLocation Loc;
-    llvm::SmallVector<const RecordDecl *, 2> Records;
-    unsigned RegionCounter = 0;
-  };
-  llvm::SmallVector<GlobalPtrSizeRecsTy, 8> GlobalizedRecords;
-  llvm::GlobalVariable *KernelTeamsReductionPtr = nullptr;
-  /// List of the records with the list of fields for the reductions across the
-  /// teams. Used to build the intermediate buffer for the fast teams
-  /// reductions.
-  /// All the records are gathered into a union `union.type` is created.
-  llvm::SmallVector<const RecordDecl *, 4> TeamsReductions;
-  /// Shared pointer for the global memory in the global memory buffer used for
-  /// the given kernel.
-  llvm::GlobalVariable *KernelStaticGlobalized = nullptr;
-  /// Pair of the Non-SPMD team and all reductions variables in this team
-  /// region.
-  std::pair<const Decl *, llvm::SmallVector<const ValueDecl *, 4>>
-      TeamAndReductions;
+  llvm::Value *getGPUWarpSize(CodeGenFunction &CGF);
 };
 
 } // CodeGen namespace.
 } // clang namespace.
 
 #endif // LLVM_CLANG_LIB_CODEGEN_CGOPENMPRUNTIMENVPTX_H

clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp

 //===---- CGOpenMPRuntimeNVPTX.cpp - Interface to OpenMP NVPTX Runtimes ---===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // This provides a class for OpenMP runtime code generation specialized to NVPTX
-// targets.
+// targets from generalized CGOpenMPRuntimeGPU class.
 //
 //===----------------------------------------------------------------------===//
 
 #include "CGOpenMPRuntimeNVPTX.h"
+#include "CGOpenMPRuntimeGPU.h"
 #include "CodeGenFunction.h"
 #include "clang/AST/Attr.h"
 #include "clang/AST/DeclOpenMP.h"
 #include "clang/AST/StmtOpenMP.h"
 #include "clang/AST/StmtVisitor.h"
 #include "clang/Basic/Cuda.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/IR/IntrinsicsNVPTX.h"
 
 using namespace clang;
 using namespace CodeGen;
 using namespace llvm::omp;
 
-namespace {
-enum OpenMPRTLFunctionNVPTX {
-  /// Call to void __kmpc_kernel_init(kmp_int32 thread_limit,
-  /// int16_t RequiresOMPRuntime);
-  OMPRTL_NVPTX__kmpc_kernel_init,
-  /// Call to void __kmpc_kernel_deinit(int16_t IsOMPRuntimeInitialized);
-  OMPRTL_NVPTX__kmpc_kernel_deinit,
-  /// Call to void __kmpc_spmd_kernel_init(kmp_int32 thread_limit,
-  /// int16_t RequiresOMPRuntime, int16_t RequiresDataSharing);
-  OMPRTL_NVPTX__kmpc_spmd_kernel_init,
-  /// Call to void __kmpc_spmd_kernel_deinit_v2(int16_t RequiresOMPRuntime);
-  OMPRTL_NVPTX__kmpc_spmd_kernel_deinit_v2,
-  /// Call to void __kmpc_kernel_prepare_parallel(void
-  /// *outlined_function);
-  OMPRTL_NVPTX__kmpc_kernel_prepare_parallel,
-  /// Call to bool __kmpc_kernel_parallel(void **outlined_function);
-  OMPRTL_NVPTX__kmpc_kernel_parallel,
-  /// Call to void __kmpc_kernel_end_parallel();
-  OMPRTL_NVPTX__kmpc_kernel_end_parallel,
-  /// Call to void __kmpc_serialized_parallel(ident_t *loc, kmp_int32
-  /// global_tid);
-  OMPRTL_NVPTX__kmpc_serialized_parallel,
-  /// Call to void __kmpc_end_serialized_parallel(ident_t *loc, kmp_int32
-  /// global_tid);
-  OMPRTL_NVPTX__kmpc_end_serialized_parallel,
-  /// Call to int32_t __kmpc_shuffle_int32(int32_t element,
-  /// int16_t lane_offset, int16_t warp_size);
-  OMPRTL_NVPTX__kmpc_shuffle_int32,
-  /// Call to int64_t __kmpc_shuffle_int64(int64_t element,
-  /// int16_t lane_offset, int16_t warp_size);
-  OMPRTL_NVPTX__kmpc_shuffle_int64,
-  /// Call to __kmpc_nvptx_parallel_reduce_nowait_v2(ident_t *loc, kmp_int32
-  /// global_tid, kmp_int32 num_vars, size_t reduce_size, void* reduce_data,
-  /// void (*kmp_ShuffleReductFctPtr)(void *rhsData, int16_t lane_id, int16_t
-  /// lane_offset, int16_t shortCircuit),
-  /// void (*kmp_InterWarpCopyFctPtr)(void* src, int32_t warp_num));
-  OMPRTL_NVPTX__kmpc_nvptx_parallel_reduce_nowait_v2,
-  /// Call to __kmpc_nvptx_teams_reduce_nowait_v2(ident_t *loc, kmp_int32
-  /// global_tid, void *global_buffer, int32_t num_of_records, void*
-  /// reduce_data,
-  /// void (*kmp_ShuffleReductFctPtr)(void *rhsData, int16_t lane_id, int16_t
-  /// lane_offset, int16_t shortCircuit),
-  /// void (*kmp_InterWarpCopyFctPtr)(void* src, int32_t warp_num), void
-  /// (*kmp_ListToGlobalCpyFctPtr)(void *buffer, int idx, void *reduce_data),
-  /// void (*kmp_GlobalToListCpyFctPtr)(void *buffer, int idx,
-  /// void *reduce_data), void (*kmp_GlobalToListCpyPtrsFctPtr)(void *buffer,
-  /// int idx, void *reduce_data), void (*kmp_GlobalToListRedFctPtr)(void
-  /// *buffer, int idx, void *reduce_data));
-  OMPRTL_NVPTX__kmpc_nvptx_teams_reduce_nowait_v2,
-  /// Call to __kmpc_nvptx_end_reduce_nowait(int32_t global_tid);
-  OMPRTL_NVPTX__kmpc_end_reduce_nowait,
-  /// Call to void __kmpc_data_sharing_init_stack();
-  OMPRTL_NVPTX__kmpc_data_sharing_init_stack,
-  /// Call to void __kmpc_data_sharing_init_stack_spmd();
-  OMPRTL_NVPTX__kmpc_data_sharing_init_stack_spmd,
-  /// Call to void* __kmpc_data_sharing_coalesced_push_stack(size_t size,
-  /// int16_t UseSharedMemory);
-  OMPRTL_NVPTX__kmpc_data_sharing_coalesced_push_stack,
-  /// Call to void* __kmpc_data_sharing_push_stack(size_t size, int16_t
-  /// UseSharedMemory);
-  OMPRTL_NVPTX__kmpc_data_sharing_push_stack,
-  /// Call to void __kmpc_data_sharing_pop_stack(void *a);
-  OMPRTL_NVPTX__kmpc_data_sharing_pop_stack,
-  /// Call to void __kmpc_begin_sharing_variables(void ***args,
-  /// size_t n_args);
-  OMPRTL_NVPTX__kmpc_begin_sharing_variables,
-  /// Call to void __kmpc_end_sharing_variables();
-  OMPRTL_NVPTX__kmpc_end_sharing_variables,
-  /// Call to void __kmpc_get_shared_variables(void ***GlobalArgs)
-  OMPRTL_NVPTX__kmpc_get_shared_variables,
-  /// Call to uint16_t __kmpc_parallel_level(ident_t *loc, kmp_int32
-  /// global_tid);
-  OMPRTL_NVPTX__kmpc_parallel_level,
-  /// Call to int8_t __kmpc_is_spmd_exec_mode();
-  OMPRTL_NVPTX__kmpc_is_spmd_exec_mode,
-  /// Call to void __kmpc_get_team_static_memory(int16_t isSPMDExecutionMode,
-  /// const void *buf, size_t size, int16_t is_shared, const void **res);
-  OMPRTL_NVPTX__kmpc_get_team_static_memory,
-  /// Call to void __kmpc_restore_team_static_memory(int16_t
-  /// isSPMDExecutionMode, int16_t is_shared);
-  OMPRTL_NVPTX__kmpc_restore_team_static_memory,
-  /// Call to void __kmpc_barrier(ident_t *loc, kmp_int32 global_tid);
-  OMPRTL__kmpc_barrier,
-  /// Call to void __kmpc_barrier_simple_spmd(ident_t *loc, kmp_int32
-  /// global_tid);
-  OMPRTL__kmpc_barrier_simple_spmd,
-  /// Call to int32_t __kmpc_warp_active_thread_mask(void);
-  OMPRTL_NVPTX__kmpc_warp_active_thread_mask,
-  /// Call to void __kmpc_syncwarp(int32_t Mask);
-  OMPRTL_NVPTX__kmpc_syncwarp,
-};
-
-/// Pre(post)-action for different OpenMP constructs specialized for NVPTX.
-class NVPTXActionTy final : public PrePostActionTy {
-  llvm::FunctionCallee EnterCallee = nullptr;
-  ArrayRef<llvm::Value *> EnterArgs;
-  llvm::FunctionCallee ExitCallee = nullptr;
-  ArrayRef<llvm::Value *> ExitArgs;
-  bool Conditional = false;
-  llvm::BasicBlock *ContBlock = nullptr;
-
-public:
-  NVPTXActionTy(llvm::FunctionCallee EnterCallee,
-                ArrayRef<llvm::Value *> EnterArgs,
-                llvm::FunctionCallee ExitCallee,
-                ArrayRef<llvm::Value *> ExitArgs, bool Conditional = false)
-      : EnterCallee(EnterCallee), EnterArgs(EnterArgs), ExitCallee(ExitCallee),
-        ExitArgs(ExitArgs), Conditional(Conditional) {}
-  void Enter(CodeGenFunction &CGF) override {
-    llvm::Value *EnterRes = CGF.EmitRuntimeCall(EnterCallee, EnterArgs);
-    if (Conditional) {
-      llvm::Value *CallBool = CGF.Builder.CreateIsNotNull(EnterRes);
-      auto *ThenBlock = CGF.createBasicBlock("omp_if.then");
-      ContBlock = CGF.createBasicBlock("omp_if.end");
-      // Generate the branch (If-stmt)
-      CGF.Builder.CreateCondBr(CallBool, ThenBlock, ContBlock);
-      CGF.EmitBlock(ThenBlock);
-    }
-  }
-  void Done(CodeGenFunction &CGF) {
-    // Emit the rest of blocks/branches
-    CGF.EmitBranch(ContBlock);
-    CGF.EmitBlock(ContBlock, true);
-  }
-  void Exit(CodeGenFunction &CGF) override {
-    CGF.EmitRuntimeCall(ExitCallee, ExitArgs);
-  }
-};
-
-/// A class to track the execution mode when codegening directives within
-/// a target region. The appropriate mode (SPMD|NON-SPMD) is set on entry
-/// to the target region and used by containing directives such as 'parallel'
-/// to emit optimized code.
-class ExecutionRuntimeModesRAII {
-private:
-  CGOpenMPRuntimeNVPTX::ExecutionMode SavedExecMode =
-      CGOpenMPRuntimeNVPTX::EM_Unknown;
-  CGOpenMPRuntimeNVPTX::ExecutionMode &ExecMode;
-  bool SavedRuntimeMode = false;
-  bool *RuntimeMode = nullptr;
-
-public:
-  /// Constructor for Non-SPMD mode.
-  ExecutionRuntimeModesRAII(CGOpenMPRuntimeNVPTX::ExecutionMode &ExecMode)
-      : ExecMode(ExecMode) {
-    SavedExecMode = ExecMode;
-    ExecMode = CGOpenMPRuntimeNVPTX::EM_NonSPMD;
-  }
-  /// Constructor for SPMD mode.
-  ExecutionRuntimeModesRAII(CGOpenMPRuntimeNVPTX::ExecutionMode &ExecMode,
-                            bool &RuntimeMode, bool FullRuntimeMode)
-      : ExecMode(ExecMode), RuntimeMode(&RuntimeMode) {
-    SavedExecMode = ExecMode;
-    SavedRuntimeMode = RuntimeMode;
-    ExecMode = CGOpenMPRuntimeNVPTX::EM_SPMD;
-    RuntimeMode = FullRuntimeMode;
-  }
-  ~ExecutionRuntimeModesRAII() {
-    ExecMode = SavedExecMode;
-    if (RuntimeMode)
-      *RuntimeMode = SavedRuntimeMode;
-  }
-};
-
-/// GPU Configuration:  This information can be derived from cuda registers,
-/// however, providing compile time constants helps generate more efficient
-/// code.  For all practical purposes this is fine because the configuration
-/// is the same for all known NVPTX architectures.
-enum MachineConfiguration : unsigned {
-  WarpSize = 32,
-  /// Number of bits required to represent a lane identifier, which is
-  /// computed as log_2(WarpSize).
-  LaneIDBits = 5,
-  LaneIDMask = WarpSize - 1,
-
-  /// Global memory alignment for performance.
-  GlobalMemoryAlignment = 128,
-
-  /// Maximal size of the shared memory buffer.
-  SharedMemorySize = 128,
-};
-
-static const ValueDecl *getPrivateItem(const Expr *RefExpr) {
-  RefExpr = RefExpr->IgnoreParens();
-  if (const auto *ASE = dyn_cast<ArraySubscriptExpr>(RefExpr)) {
-    const Expr *Base = ASE->getBase()->IgnoreParenImpCasts();
-    while (const auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
-      Base = TempASE->getBase()->IgnoreParenImpCasts();
-    RefExpr = Base;
-  } else if (auto *OASE = dyn_cast<OMPArraySectionExpr>(RefExpr)) {
-    const Expr *Base = OASE->getBase()->IgnoreParenImpCasts();
-    while (const auto *TempOASE = dyn_cast<OMPArraySectionExpr>(Base))
-      Base = TempOASE->getBase()->IgnoreParenImpCasts();
-    while (const auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base))
-      Base = TempASE->getBase()->IgnoreParenImpCasts();
-    RefExpr = Base;
-  }
-  RefExpr = RefExpr->IgnoreParenImpCasts();
-  if (const auto *DE = dyn_cast<DeclRefExpr>(RefExpr))
-    return cast<ValueDecl>(DE->getDecl()->getCanonicalDecl());
-  const auto *ME = cast<MemberExpr>(RefExpr);
-  return cast<ValueDecl>(ME->getMemberDecl()->getCanonicalDecl());
-}
-
-
-static RecordDecl *buildRecordForGlobalizedVars(
-    ASTContext &C, ArrayRef<const ValueDecl *> EscapedDecls,
-    ArrayRef<const ValueDecl *> EscapedDeclsForTeams,
-    llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-        &MappedDeclsFields, int BufSize) {
-  using VarsDataTy = std::pair<CharUnits /*Align*/, const ValueDecl *>;
-  if (EscapedDecls.empty() && EscapedDeclsForTeams.empty())
-    return nullptr;
-  SmallVector<VarsDataTy, 4> GlobalizedVars;
-  for (const ValueDecl *D : EscapedDecls)
-    GlobalizedVars.emplace_back(
-        CharUnits::fromQuantity(std::max(
-            C.getDeclAlign(D).getQuantity(),
-            static_cast<CharUnits::QuantityType>(GlobalMemoryAlignment))),
-        D);
-  for (const ValueDecl *D : EscapedDeclsForTeams)
-    GlobalizedVars.emplace_back(C.getDeclAlign(D), D);
-  llvm::stable_sort(GlobalizedVars, [](VarsDataTy L, VarsDataTy R) {
-    return L.first > R.first;
-  });
-
-  // Build struct _globalized_locals_ty {
-  //         /*  globalized vars  */[WarSize] align (max(decl_align,
-  //         GlobalMemoryAlignment))
-  //         /*  globalized vars  */ for EscapedDeclsForTeams
-  //       };
-  RecordDecl *GlobalizedRD = C.buildImplicitRecord("_globalized_locals_ty");
-  GlobalizedRD->startDefinition();
-  llvm::SmallPtrSet<const ValueDecl *, 16> SingleEscaped(
-      EscapedDeclsForTeams.begin(), EscapedDeclsForTeams.end());
-  for (const auto &Pair : GlobalizedVars) {
-    const ValueDecl *VD = Pair.second;
-    QualType Type = VD->getType();
-    if (Type->isLValueReferenceType())
-      Type = C.getPointerType(Type.getNonReferenceType());
-    else
-      Type = Type.getNonReferenceType();
-    SourceLocation Loc = VD->getLocation();
-    FieldDecl *Field;
-    if (SingleEscaped.count(VD)) {
-      Field = FieldDecl::Create(
-          C, GlobalizedRD, Loc, Loc, VD->getIdentifier(), Type,
-          C.getTrivialTypeSourceInfo(Type, SourceLocation()),
-          /*BW=*/nullptr, /*Mutable=*/false,
-          /*InitStyle=*/ICIS_NoInit);
-      Field->setAccess(AS_public);
-      if (VD->hasAttrs()) {
-        for (specific_attr_iterator<AlignedAttr> I(VD->getAttrs().begin()),
-             E(VD->getAttrs().end());
-             I != E; ++I)
-          Field->addAttr(*I);
-      }
-    } else {
-      llvm::APInt ArraySize(32, BufSize);
-      Type = C.getConstantArrayType(Type, ArraySize, nullptr, ArrayType::Normal,
-                                    0);
-      Field = FieldDecl::Create(
-          C, GlobalizedRD, Loc, Loc, VD->getIdentifier(), Type,
-          C.getTrivialTypeSourceInfo(Type, SourceLocation()),
-          /*BW=*/nullptr, /*Mutable=*/false,
-          /*InitStyle=*/ICIS_NoInit);
-      Field->setAccess(AS_public);
-      llvm::APInt Align(32, std::max(C.getDeclAlign(VD).getQuantity(),
-                                     static_cast<CharUnits::QuantityType>(
-                                         GlobalMemoryAlignment)));
-      Field->addAttr(AlignedAttr::CreateImplicit(
-          C, /*IsAlignmentExpr=*/true,
-          IntegerLiteral::Create(C, Align,
-                                 C.getIntTypeForBitwidth(32, /*Signed=*/0),
-                                 SourceLocation()),
-          {}, AttributeCommonInfo::AS_GNU, AlignedAttr::GNU_aligned));
-    }
-    GlobalizedRD->addDecl(Field);
-    MappedDeclsFields.try_emplace(VD, Field);
-  }
-  GlobalizedRD->completeDefinition();
-  return GlobalizedRD;
-}
-
-/// Get the list of variables that can escape their declaration context.
-class CheckVarsEscapingDeclContext final
-    : public ConstStmtVisitor<CheckVarsEscapingDeclContext> {
-  CodeGenFunction &CGF;
-  llvm::SetVector<const ValueDecl *> EscapedDecls;
-  llvm::SetVector<const ValueDecl *> EscapedVariableLengthDecls;
-  llvm::SmallPtrSet<const Decl *, 4> EscapedParameters;
-  RecordDecl *GlobalizedRD = nullptr;
-  llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *> MappedDeclsFields;
-  bool AllEscaped = false;
-  bool IsForCombinedParallelRegion = false;
-
-  void markAsEscaped(const ValueDecl *VD) {
-    // Do not globalize declare target variables.
-    if (!isa<VarDecl>(VD) ||
-        OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD))
-      return;
-    VD = cast<ValueDecl>(VD->getCanonicalDecl());
-    // Use user-specified allocation.
-    if (VD->hasAttrs() && VD->hasAttr<OMPAllocateDeclAttr>())
-      return;
-    // Variables captured by value must be globalized.
-    if (auto *CSI = CGF.CapturedStmtInfo) {
-      if (const FieldDecl *FD = CSI->lookup(cast<VarDecl>(VD))) {
-        // Check if need to capture the variable that was already captured by
-        // value in the outer region.
-        if (!IsForCombinedParallelRegion) {
-          if (!FD->hasAttrs())
-            return;
-          const auto *Attr = FD->getAttr<OMPCaptureKindAttr>();
-          if (!Attr)
-            return;
-          if (((Attr->getCaptureKind() != OMPC_map) &&
-               !isOpenMPPrivate(Attr->getCaptureKind())) ||
-              ((Attr->getCaptureKind() == OMPC_map) &&
-               !FD->getType()->isAnyPointerType()))
-            return;
-        }
-        if (!FD->getType()->isReferenceType()) {
-          assert(!VD->getType()->isVariablyModifiedType() &&
-                 "Parameter captured by value with variably modified type");
-          EscapedParameters.insert(VD);
-        } else if (!IsForCombinedParallelRegion) {
-          return;
-        }
-      }
-    }
-    if ((!CGF.CapturedStmtInfo ||
-         (IsForCombinedParallelRegion && CGF.CapturedStmtInfo)) &&
-        VD->getType()->isReferenceType())
-      // Do not globalize variables with reference type.
-      return;
-    if (VD->getType()->isVariablyModifiedType())
-      EscapedVariableLengthDecls.insert(VD);
-    else
-      EscapedDecls.insert(VD);
-  }
-
-  void VisitValueDecl(const ValueDecl *VD) {
-    if (VD->getType()->isLValueReferenceType())
-      markAsEscaped(VD);
-    if (const auto *VarD = dyn_cast<VarDecl>(VD)) {
-      if (!isa<ParmVarDecl>(VarD) && VarD->hasInit()) {
-        const bool SavedAllEscaped = AllEscaped;
-        AllEscaped = VD->getType()->isLValueReferenceType();
-        Visit(VarD->getInit());
-        AllEscaped = SavedAllEscaped;
-      }
-    }
-  }
-  void VisitOpenMPCapturedStmt(const CapturedStmt *S,
-                               ArrayRef<OMPClause *> Clauses,
-                               bool IsCombinedParallelRegion) {
-    if (!S)
-      return;
-    for (const CapturedStmt::Capture &C : S->captures()) {
-      if (C.capturesVariable() && !C.capturesVariableByCopy()) {
-        const ValueDecl *VD = C.getCapturedVar();
-        bool SavedIsForCombinedParallelRegion = IsForCombinedParallelRegion;
-        if (IsCombinedParallelRegion) {
-          // Check if the variable is privatized in the combined construct and
-          // those private copies must be shared in the inner parallel
-          // directive.
-          IsForCombinedParallelRegion = false;
-          for (const OMPClause *C : Clauses) {
-            if (!isOpenMPPrivate(C->getClauseKind()) ||
-                C->getClauseKind() == OMPC_reduction ||
-                C->getClauseKind() == OMPC_linear ||
-                C->getClauseKind() == OMPC_private)
-              continue;
-            ArrayRef<const Expr *> Vars;
-            if (const auto *PC = dyn_cast<OMPFirstprivateClause>(C))
-              Vars = PC->getVarRefs();
-            else if (const auto *PC = dyn_cast<OMPLastprivateClause>(C))
-              Vars = PC->getVarRefs();
-            else
-              llvm_unreachable("Unexpected clause.");
-            for (const auto *E : Vars) {
-              const Decl *D =
-                  cast<DeclRefExpr>(E)->getDecl()->getCanonicalDecl();
-              if (D == VD->getCanonicalDecl()) {
-                IsForCombinedParallelRegion = true;
-                break;
-              }
-            }
-            if (IsForCombinedParallelRegion)
-              break;
-          }
-        }
-        markAsEscaped(VD);
-        if (isa<OMPCapturedExprDecl>(VD))
-          VisitValueDecl(VD);
-        IsForCombinedParallelRegion = SavedIsForCombinedParallelRegion;
-      }
-    }
-  }
-
-  void buildRecordForGlobalizedVars(bool IsInTTDRegion) {
-    assert(!GlobalizedRD &&
-           "Record for globalized variables is built already.");
-    ArrayRef<const ValueDecl *> EscapedDeclsForParallel, EscapedDeclsForTeams;
-    if (IsInTTDRegion)
-      EscapedDeclsForTeams = EscapedDecls.getArrayRef();
-    else
-      EscapedDeclsForParallel = EscapedDecls.getArrayRef();
-    GlobalizedRD = ::buildRecordForGlobalizedVars(
-        CGF.getContext(), EscapedDeclsForParallel, EscapedDeclsForTeams,
-        MappedDeclsFields, WarpSize);
-  }
-
-public:
-  CheckVarsEscapingDeclContext(CodeGenFunction &CGF,
-                               ArrayRef<const ValueDecl *> TeamsReductions)
-      : CGF(CGF), EscapedDecls(TeamsReductions.begin(), TeamsReductions.end()) {
-  }
-  virtual ~CheckVarsEscapingDeclContext() = default;
-  void VisitDeclStmt(const DeclStmt *S) {
-    if (!S)
-      return;
-    for (const Decl *D : S->decls())
-      if (const auto *VD = dyn_cast_or_null<ValueDecl>(D))
-        VisitValueDecl(VD);
-  }
-  void VisitOMPExecutableDirective(const OMPExecutableDirective *D) {
-    if (!D)
-      return;
-    if (!D->hasAssociatedStmt())
-      return;
-    if (const auto *S =
-            dyn_cast_or_null<CapturedStmt>(D->getAssociatedStmt())) {
-      // Do not analyze directives that do not actually require capturing,
-      // like `omp for` or `omp simd` directives.
-      llvm::SmallVector<OpenMPDirectiveKind, 4> CaptureRegions;
-      getOpenMPCaptureRegions(CaptureRegions, D->getDirectiveKind());
-      if (CaptureRegions.size() == 1 && CaptureRegions.back() == OMPD_unknown) {
-        VisitStmt(S->getCapturedStmt());
-        return;
-      }
-      VisitOpenMPCapturedStmt(
-          S, D->clauses(),
-          CaptureRegions.back() == OMPD_parallel &&
-              isOpenMPDistributeDirective(D->getDirectiveKind()));
-    }
-  }
-  void VisitCapturedStmt(const CapturedStmt *S) {
-    if (!S)
-      return;
-    for (const CapturedStmt::Capture &C : S->captures()) {
-      if (C.capturesVariable() && !C.capturesVariableByCopy()) {
-        const ValueDecl *VD = C.getCapturedVar();
-        markAsEscaped(VD);
-        if (isa<OMPCapturedExprDecl>(VD))
-          VisitValueDecl(VD);
-      }
-    }
-  }
-  void VisitLambdaExpr(const LambdaExpr *E) {
-    if (!E)
-      return;
-    for (const LambdaCapture &C : E->captures()) {
-      if (C.capturesVariable()) {
-        if (C.getCaptureKind() == LCK_ByRef) {
-          const ValueDecl *VD = C.getCapturedVar();
-          markAsEscaped(VD);
-          if (E->isInitCapture(&C) || isa<OMPCapturedExprDecl>(VD))
-            VisitValueDecl(VD);
-        }
-      }
-    }
-  }
-  void VisitBlockExpr(const BlockExpr *E) {
-    if (!E)
-      return;
-    for (const BlockDecl::Capture &C : E->getBlockDecl()->captures()) {
-      if (C.isByRef()) {
-        const VarDecl *VD = C.getVariable();
-        markAsEscaped(VD);
-        if (isa<OMPCapturedExprDecl>(VD) || VD->isInitCapture())
-          VisitValueDecl(VD);
-      }
-    }
-  }
-  void VisitCallExpr(const CallExpr *E) {
-    if (!E)
-      return;
-    for (const Expr *Arg : E->arguments()) {
-      if (!Arg)
-        continue;
-      if (Arg->isLValue()) {
-        const bool SavedAllEscaped = AllEscaped;
-        AllEscaped = true;
-        Visit(Arg);
-        AllEscaped = SavedAllEscaped;
-      } else {
-        Visit(Arg);
-      }
-    }
-    Visit(E->getCallee());
-  }
-  void VisitDeclRefExpr(const DeclRefExpr *E) {
-    if (!E)
-      return;
-    const ValueDecl *VD = E->getDecl();
-    if (AllEscaped)
-      markAsEscaped(VD);
-    if (isa<OMPCapturedExprDecl>(VD))
-      VisitValueDecl(VD);
-    else if (const auto *VarD = dyn_cast<VarDecl>(VD))
-      if (VarD->isInitCapture())
-        VisitValueDecl(VD);
-  }
-  void VisitUnaryOperator(const UnaryOperator *E) {
-    if (!E)
-      return;
-    if (E->getOpcode() == UO_AddrOf) {
-      const bool SavedAllEscaped = AllEscaped;
-      AllEscaped = true;
-      Visit(E->getSubExpr());
-      AllEscaped = SavedAllEscaped;
-    } else {
-      Visit(E->getSubExpr());
-    }
-  }
-  void VisitImplicitCastExpr(const ImplicitCastExpr *E) {
-    if (!E)
-      return;
-    if (E->getCastKind() == CK_ArrayToPointerDecay) {
-      const bool SavedAllEscaped = AllEscaped;
-      AllEscaped = true;
-      Visit(E->getSubExpr());
-      AllEscaped = SavedAllEscaped;
-    } else {
-      Visit(E->getSubExpr());
-    }
-  }
-  void VisitExpr(const Expr *E) {
-    if (!E)
-      return;
-    bool SavedAllEscaped = AllEscaped;
-    if (!E->isLValue())
-      AllEscaped = false;
-    for (const Stmt *Child : E->children())
-      if (Child)
-        Visit(Child);
-    AllEscaped = SavedAllEscaped;
-  }
-  void VisitStmt(const Stmt *S) {
-    if (!S)
-      return;
-    for (const Stmt *Child : S->children())
-      if (Child)
-        Visit(Child);
-  }
-
-  /// Returns the record that handles all the escaped local variables and used
-  /// instead of their original storage.
-  const RecordDecl *getGlobalizedRecord(bool IsInTTDRegion) {
-    if (!GlobalizedRD)
-      buildRecordForGlobalizedVars(IsInTTDRegion);
-    return GlobalizedRD;
-  }
-
-  /// Returns the field in the globalized record for the escaped variable.
-  const FieldDecl *getFieldForGlobalizedVar(const ValueDecl *VD) const {
-    assert(GlobalizedRD &&
-           "Record for globalized variables must be generated already.");
-    auto I = MappedDeclsFields.find(VD);
-    if (I == MappedDeclsFields.end())
-      return nullptr;
-    return I->getSecond();
-  }
-
-  /// Returns the list of the escaped local variables/parameters.
-  ArrayRef<const ValueDecl *> getEscapedDecls() const {
-    return EscapedDecls.getArrayRef();
-  }
-
-  /// Checks if the escaped local variable is actually a parameter passed by
-  /// value.
-  const llvm::SmallPtrSetImpl<const Decl *> &getEscapedParameters() const {
-    return EscapedParameters;
-  }
-
-  /// Returns the list of the escaped variables with the variably modified
-  /// types.
-  ArrayRef<const ValueDecl *> getEscapedVariableLengthDecls() const {
-    return EscapedVariableLengthDecls.getArrayRef();
-  }
-};
-} // anonymous namespace
+CGOpenMPRuntimeNVPTX::CGOpenMPRuntimeNVPTX(CodeGenModule &CGM)
+    : CGOpenMPRuntimeGPU(CGM) {
+  if (!CGM.getLangOpts().OpenMPIsDevice)
+    llvm_unreachable("OpenMP NVPTX can only handle device code.");
 
 /// Get the GPU warp size.
-static llvm::Value *getNVPTXWarpSize(CodeGenFunction &CGF) {
+llvm::Value *CGOpenMPRuntimeNVPTX::getGPUWarpSize(CodeGenFunction &CGF) {
   return CGF.EmitRuntimeCall(
       llvm::Intrinsic::getDeclaration(
           &CGF.CGM.getModule(), llvm::Intrinsic::nvvm_read_ptx_sreg_warpsize),
       "nvptx_warp_size");
 }
-
-/// Get the id of the current thread on the GPU.
-static llvm::Value *getNVPTXThreadID(CodeGenFunction &CGF) {
-  return CGF.EmitRuntimeCall(
-      llvm::Intrinsic::getDeclaration(
-          &CGF.CGM.getModule(), llvm::Intrinsic::nvvm_read_ptx_sreg_tid_x),
-      "nvptx_tid");
-}
-
-/// Get the id of the warp in the block.
-/// We assume that the warp size is 32, which is always the case
-/// on the NVPTX device, to generate more efficient code.
-static llvm::Value *getNVPTXWarpID(CodeGenFunction &CGF) {
-  CGBuilderTy &Bld = CGF.Builder;
-  return Bld.CreateAShr(getNVPTXThreadID(CGF), LaneIDBits, "nvptx_warp_id");
-}
-
-/// Get the id of the current lane in the Warp.
-/// We assume that the warp size is 32, which is always the case
-/// on the NVPTX device, to generate more efficient code.
-static llvm::Value *getNVPTXLaneID(CodeGenFunction &CGF) {
-  CGBuilderTy &Bld = CGF.Builder;
-  return Bld.CreateAnd(getNVPTXThreadID(CGF), Bld.getInt32(LaneIDMask),
-                       "nvptx_lane_id");
-}
-
-/// Get the maximum number of threads in a block of the GPU.
-static llvm::Value *getNVPTXNumThreads(CodeGenFunction &CGF) {
-  return CGF.EmitRuntimeCall(
-      llvm::Intrinsic::getDeclaration(
-          &CGF.CGM.getModule(), llvm::Intrinsic::nvvm_read_ptx_sreg_ntid_x),
-      "nvptx_num_threads");
-}
-
-/// Get the value of the thread_limit clause in the teams directive.
-/// For the 'generic' execution mode, the runtime encodes thread_limit in
-/// the launch parameters, always starting thread_limit+warpSize threads per
-/// CTA. The threads in the last warp are reserved for master execution.
-/// For the 'spmd' execution mode, all threads in a CTA are part of the team.
-static llvm::Value *getThreadLimit(CodeGenFunction &CGF,
-                                   bool IsInSPMDExecutionMode = false) {
-  CGBuilderTy &Bld = CGF.Builder;
-  return IsInSPMDExecutionMode
-             ? getNVPTXNumThreads(CGF)
-             : Bld.CreateNUWSub(getNVPTXNumThreads(CGF), getNVPTXWarpSize(CGF),
-                                "thread_limit");
-}
-
-/// Get the thread id of the OMP master thread.
-/// The master thread id is the first thread (lane) of the last warp in the
-/// GPU block.  Warp size is assumed to be some power of 2.
-/// Thread id is 0 indexed.
-/// E.g: If NumThreads is 33, master id is 32.
-///      If NumThreads is 64, master id is 32.
-///      If NumThreads is 1024, master id is 992.
-static llvm::Value *getMasterThreadID(CodeGenFunction &CGF) {
-  CGBuilderTy &Bld = CGF.Builder;
-  llvm::Value *NumThreads = getNVPTXNumThreads(CGF);
-
-  // We assume that the warp size is a power of 2.
-  llvm::Value *Mask = Bld.CreateNUWSub(getNVPTXWarpSize(CGF), Bld.getInt32(1));
-
-  return Bld.CreateAnd(Bld.CreateNUWSub(NumThreads, Bld.getInt32(1)),
-                       Bld.CreateNot(Mask), "master_tid");
-}
-
-CGOpenMPRuntimeNVPTX::WorkerFunctionState::WorkerFunctionState(
-    CodeGenModule &CGM, SourceLocation Loc)
-    : WorkerFn(nullptr), CGFI(CGM.getTypes().arrangeNullaryFunction()),
-      Loc(Loc) {
-  createWorkerFunction(CGM);
-}
-
-void CGOpenMPRuntimeNVPTX::WorkerFunctionState::createWorkerFunction(
-    CodeGenModule &CGM) {
-  // Create an worker function with no arguments.
-
-  WorkerFn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      /*placeholder=*/"_worker", &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), WorkerFn, CGFI);
-  WorkerFn->setDoesNotRecurse();
-}
-
-CGOpenMPRuntimeNVPTX::ExecutionMode
-CGOpenMPRuntimeNVPTX::getExecutionMode() const {
-  return CurrentExecutionMode;
-}
-
-static CGOpenMPRuntimeNVPTX::DataSharingMode
-getDataSharingMode(CodeGenModule &CGM) {
-  return CGM.getLangOpts().OpenMPCUDAMode ? CGOpenMPRuntimeNVPTX::CUDA
-                                          : CGOpenMPRuntimeNVPTX::Generic;
-}
-
-/// Check for inner (nested) SPMD construct, if any
-static bool hasNestedSPMDDirective(ASTContext &Ctx,
-                                   const OMPExecutableDirective &D) {
-  const auto *CS = D.getInnermostCapturedStmt();
-  const auto *Body =
-      CS->getCapturedStmt()->IgnoreContainers(/*IgnoreCaptured=*/true);
-  const Stmt *ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-
-  if (const auto *NestedDir =
-          dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-    OpenMPDirectiveKind DKind = NestedDir->getDirectiveKind();
-    switch (D.getDirectiveKind()) {
-    case OMPD_target:
-      if (isOpenMPParallelDirective(DKind))
-        return true;
-      if (DKind == OMPD_teams) {
-        Body = NestedDir->getInnermostCapturedStmt()->IgnoreContainers(
-            /*IgnoreCaptured=*/true);
-        if (!Body)
-          return false;
-        ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-        if (const auto *NND =
-                dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-          DKind = NND->getDirectiveKind();
-          if (isOpenMPParallelDirective(DKind))
-            return true;
-        }
-      }
-      return false;
-    case OMPD_target_teams:
-      return isOpenMPParallelDirective(DKind);
-    case OMPD_target_simd:
-    case OMPD_target_parallel:
-    case OMPD_target_parallel_for:
-    case OMPD_target_parallel_for_simd:
-    case OMPD_target_teams_distribute:
-    case OMPD_target_teams_distribute_simd:
-    case OMPD_target_teams_distribute_parallel_for:
-    case OMPD_target_teams_distribute_parallel_for_simd:
-    case OMPD_parallel:
-    case OMPD_for:
-    case OMPD_parallel_for:
-    case OMPD_parallel_master:
-    case OMPD_parallel_sections:
-    case OMPD_for_simd:
-    case OMPD_parallel_for_simd:
-    case OMPD_cancel:
-    case OMPD_cancellation_point:
-    case OMPD_ordered:
-    case OMPD_threadprivate:
-    case OMPD_allocate:
-    case OMPD_task:
-    case OMPD_simd:
-    case OMPD_sections:
-    case OMPD_section:
-    case OMPD_single:
-    case OMPD_master:
-    case OMPD_critical:
-    case OMPD_taskyield:
-    case OMPD_barrier:
-    case OMPD_taskwait:
-    case OMPD_taskgroup:
-    case OMPD_atomic:
-    case OMPD_flush:
-    case OMPD_depobj:
-    case OMPD_scan:
-    case OMPD_teams:
-    case OMPD_target_data:
-    case OMPD_target_exit_data:
-    case OMPD_target_enter_data:
-    case OMPD_distribute:
-    case OMPD_distribute_simd:
-    case OMPD_distribute_parallel_for:
-    case OMPD_distribute_parallel_for_simd:
-    case OMPD_teams_distribute:
-    case OMPD_teams_distribute_simd:
-    case OMPD_teams_distribute_parallel_for:
-    case OMPD_teams_distribute_parallel_for_simd:
-    case OMPD_target_update:
-    case OMPD_declare_simd:
-    case OMPD_declare_variant:
-    case OMPD_begin_declare_variant:
-    case OMPD_end_declare_variant:
-    case OMPD_declare_target:
-    case OMPD_end_declare_target:
-    case OMPD_declare_reduction:
-    case OMPD_declare_mapper:
-    case OMPD_taskloop:
-    case OMPD_taskloop_simd:
-    case OMPD_master_taskloop:
-    case OMPD_master_taskloop_simd:
-    case OMPD_parallel_master_taskloop:
-    case OMPD_parallel_master_taskloop_simd:
-    case OMPD_requires:
-    case OMPD_unknown:
-    default:
-      llvm_unreachable("Unexpected directive.");
-    }
-  }
-
-  return false;
-}
-
-static bool supportsSPMDExecutionMode(ASTContext &Ctx,
-                                      const OMPExecutableDirective &D) {
-  OpenMPDirectiveKind DirectiveKind = D.getDirectiveKind();
-  switch (DirectiveKind) {
-  case OMPD_target:
-  case OMPD_target_teams:
-    return hasNestedSPMDDirective(Ctx, D);
-  case OMPD_target_parallel:
-  case OMPD_target_parallel_for:
-  case OMPD_target_parallel_for_simd:
-  case OMPD_target_teams_distribute_parallel_for:
-  case OMPD_target_teams_distribute_parallel_for_simd:
-  case OMPD_target_simd:
-  case OMPD_target_teams_distribute_simd:
-    return true;
-  case OMPD_target_teams_distribute:
-    return false;
-  case OMPD_parallel:
-  case OMPD_for:
-  case OMPD_parallel_for:
-  case OMPD_parallel_master:
-  case OMPD_parallel_sections:
-  case OMPD_for_simd:
-  case OMPD_parallel_for_simd:
-  case OMPD_cancel:
-  case OMPD_cancellation_point:
-  case OMPD_ordered:
-  case OMPD_threadprivate:
-  case OMPD_allocate:
-  case OMPD_task:
-  case OMPD_simd:
-  case OMPD_sections:
-  case OMPD_section:
-  case OMPD_single:
-  case OMPD_master:
-  case OMPD_critical:
-  case OMPD_taskyield:
-  case OMPD_barrier:
-  case OMPD_taskwait:
-  case OMPD_taskgroup:
-  case OMPD_atomic:
-  case OMPD_flush:
-  case OMPD_depobj:
-  case OMPD_scan:
-  case OMPD_teams:
-  case OMPD_target_data:
-  case OMPD_target_exit_data:
-  case OMPD_target_enter_data:
-  case OMPD_distribute:
-  case OMPD_distribute_simd:
-  case OMPD_distribute_parallel_for:
-  case OMPD_distribute_parallel_for_simd:
-  case OMPD_teams_distribute:
-  case OMPD_teams_distribute_simd:
-  case OMPD_teams_distribute_parallel_for:
-  case OMPD_teams_distribute_parallel_for_simd:
-  case OMPD_target_update:
-  case OMPD_declare_simd:
-  case OMPD_declare_variant:
-  case OMPD_begin_declare_variant:
-  case OMPD_end_declare_variant:
-  case OMPD_declare_target:
-  case OMPD_end_declare_target:
-  case OMPD_declare_reduction:
-  case OMPD_declare_mapper:
-  case OMPD_taskloop:
-  case OMPD_taskloop_simd:
-  case OMPD_master_taskloop:
-  case OMPD_master_taskloop_simd:
-  case OMPD_parallel_master_taskloop:
-  case OMPD_parallel_master_taskloop_simd:
-  case OMPD_requires:
-  case OMPD_unknown:
-  default:
-    break;
-  }
-  llvm_unreachable(
-      "Unknown programming model for OpenMP directive on NVPTX target.");
-}
-
-/// Check if the directive is loops based and has schedule clause at all or has
-/// static scheduling.
-static bool hasStaticScheduling(const OMPExecutableDirective &D) {
-  assert(isOpenMPWorksharingDirective(D.getDirectiveKind()) &&
-         isOpenMPLoopDirective(D.getDirectiveKind()) &&
-         "Expected loop-based directive.");
-  return !D.hasClausesOfKind<OMPOrderedClause>() &&
-         (!D.hasClausesOfKind<OMPScheduleClause>() ||
-          llvm::any_of(D.getClausesOfKind<OMPScheduleClause>(),
-                       [](const OMPScheduleClause *C) {
-                         return C->getScheduleKind() == OMPC_SCHEDULE_static;
-                       }));
-}
-
-/// Check for inner (nested) lightweight runtime construct, if any
-static bool hasNestedLightweightDirective(ASTContext &Ctx,
-                                          const OMPExecutableDirective &D) {
-  assert(supportsSPMDExecutionMode(Ctx, D) && "Expected SPMD mode directive.");
-  const auto *CS = D.getInnermostCapturedStmt();
-  const auto *Body =
-      CS->getCapturedStmt()->IgnoreContainers(/*IgnoreCaptured=*/true);
-  const Stmt *ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-
-  if (const auto *NestedDir =
-          dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-    OpenMPDirectiveKind DKind = NestedDir->getDirectiveKind();
-    switch (D.getDirectiveKind()) {
-    case OMPD_target:
-      if (isOpenMPParallelDirective(DKind) &&
-          isOpenMPWorksharingDirective(DKind) && isOpenMPLoopDirective(DKind) &&
-          hasStaticScheduling(*NestedDir))
-        return true;
-      if (DKind == OMPD_teams_distribute_simd || DKind == OMPD_simd)
-        return true;
-      if (DKind == OMPD_parallel) {
-        Body = NestedDir->getInnermostCapturedStmt()->IgnoreContainers(
-            /*IgnoreCaptured=*/true);
-        if (!Body)
-          return false;
-        ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-        if (const auto *NND =
-                dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-          DKind = NND->getDirectiveKind();
-          if (isOpenMPWorksharingDirective(DKind) &&
-              isOpenMPLoopDirective(DKind) && hasStaticScheduling(*NND))
-            return true;
-        }
-      } else if (DKind == OMPD_teams) {
-        Body = NestedDir->getInnermostCapturedStmt()->IgnoreContainers(
-            /*IgnoreCaptured=*/true);
-        if (!Body)
-          return false;
-        ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-        if (const auto *NND =
-                dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-          DKind = NND->getDirectiveKind();
-          if (isOpenMPParallelDirective(DKind) &&
-              isOpenMPWorksharingDirective(DKind) &&
-              isOpenMPLoopDirective(DKind) && hasStaticScheduling(*NND))
-            return true;
-          if (DKind == OMPD_parallel) {
-            Body = NND->getInnermostCapturedStmt()->IgnoreContainers(
-                /*IgnoreCaptured=*/true);
-            if (!Body)
-              return false;
-            ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-            if (const auto *NND =
-                    dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-              DKind = NND->getDirectiveKind();
-              if (isOpenMPWorksharingDirective(DKind) &&
-                  isOpenMPLoopDirective(DKind) && hasStaticScheduling(*NND))
-                return true;
-            }
-          }
-        }
-      }
-      return false;
-    case OMPD_target_teams:
-      if (isOpenMPParallelDirective(DKind) &&
-          isOpenMPWorksharingDirective(DKind) && isOpenMPLoopDirective(DKind) &&
-          hasStaticScheduling(*NestedDir))
-        return true;
-      if (DKind == OMPD_distribute_simd || DKind == OMPD_simd)
-        return true;
-      if (DKind == OMPD_parallel) {
-        Body = NestedDir->getInnermostCapturedStmt()->IgnoreContainers(
-            /*IgnoreCaptured=*/true);
-        if (!Body)
-          return false;
-        ChildStmt = CGOpenMPRuntime::getSingleCompoundChild(Ctx, Body);
-        if (const auto *NND =
-                dyn_cast_or_null<OMPExecutableDirective>(ChildStmt)) {
-          DKind = NND->getDirectiveKind();
-          if (isOpenMPWorksharingDirective(DKind) &&
-              isOpenMPLoopDirective(DKind) && hasStaticScheduling(*NND))
-            return true;
-        }
-      }
-      return false;
-    case OMPD_target_parallel:
-      if (DKind == OMPD_simd)
-        return true;
-      return isOpenMPWorksharingDirective(DKind) &&
-             isOpenMPLoopDirective(DKind) && hasStaticScheduling(*NestedDir);
-    case OMPD_target_teams_distribute:
-    case OMPD_target_simd:
-    case OMPD_target_parallel_for:
-    case OMPD_target_parallel_for_simd:
-    case OMPD_target_teams_distribute_simd:
-    case OMPD_target_teams_distribute_parallel_for:
-    case OMPD_target_teams_distribute_parallel_for_simd:
-    case OMPD_parallel:
-    case OMPD_for:
-    case OMPD_parallel_for:
-    case OMPD_parallel_master:
-    case OMPD_parallel_sections:
-    case OMPD_for_simd:
-    case OMPD_parallel_for_simd:
-    case OMPD_cancel:
-    case OMPD_cancellation_point:
-    case OMPD_ordered:
-    case OMPD_threadprivate:
-    case OMPD_allocate:
-    case OMPD_task:
-    case OMPD_simd:
-    case OMPD_sections:
-    case OMPD_section:
-    case OMPD_single:
-    case OMPD_master:
-    case OMPD_critical:
-    case OMPD_taskyield:
-    case OMPD_barrier:
-    case OMPD_taskwait:
-    case OMPD_taskgroup:
-    case OMPD_atomic:
-    case OMPD_flush:
-    case OMPD_depobj:
-    case OMPD_scan:
-    case OMPD_teams:
-    case OMPD_target_data:
-    case OMPD_target_exit_data:
-    case OMPD_target_enter_data:
-    case OMPD_distribute:
-    case OMPD_distribute_simd:
-    case OMPD_distribute_parallel_for:
-    case OMPD_distribute_parallel_for_simd:
-    case OMPD_teams_distribute:
-    case OMPD_teams_distribute_simd:
-    case OMPD_teams_distribute_parallel_for:
-    case OMPD_teams_distribute_parallel_for_simd:
-    case OMPD_target_update:
-    case OMPD_declare_simd:
-    case OMPD_declare_variant:
-    case OMPD_begin_declare_variant:
-    case OMPD_end_declare_variant:
-    case OMPD_declare_target:
-    case OMPD_end_declare_target:
-    case OMPD_declare_reduction:
-    case OMPD_declare_mapper:
-    case OMPD_taskloop:
-    case OMPD_taskloop_simd:
-    case OMPD_master_taskloop:
-    case OMPD_master_taskloop_simd:
-    case OMPD_parallel_master_taskloop:
-    case OMPD_parallel_master_taskloop_simd:
-    case OMPD_requires:
-    case OMPD_unknown:
-    default:
-      llvm_unreachable("Unexpected directive.");
-    }
-  }
-
-  return false;
-}
-
-/// Checks if the construct supports lightweight runtime. It must be SPMD
-/// construct + inner loop-based construct with static scheduling.
-static bool supportsLightweightRuntime(ASTContext &Ctx,
-                                       const OMPExecutableDirective &D) {
-  if (!supportsSPMDExecutionMode(Ctx, D))
-    return false;
-  OpenMPDirectiveKind DirectiveKind = D.getDirectiveKind();
-  switch (DirectiveKind) {
-  case OMPD_target:
-  case OMPD_target_teams:
-  case OMPD_target_parallel:
-    return hasNestedLightweightDirective(Ctx, D);
-  case OMPD_target_parallel_for:
-  case OMPD_target_parallel_for_simd:
-  case OMPD_target_teams_distribute_parallel_for:
-  case OMPD_target_teams_distribute_parallel_for_simd:
-    // (Last|First)-privates must be shared in parallel region.
-    return hasStaticScheduling(D);
-  case OMPD_target_simd:
-  case OMPD_target_teams_distribute_simd:
-    return true;
-  case OMPD_target_teams_distribute:
-    return false;
-  case OMPD_parallel:
-  case OMPD_for:
-  case OMPD_parallel_for:
-  case OMPD_parallel_master:
-  case OMPD_parallel_sections:
-  case OMPD_for_simd:
-  case OMPD_parallel_for_simd:
-  case OMPD_cancel:
-  case OMPD_cancellation_point:
-  case OMPD_ordered:
-  case OMPD_threadprivate:
-  case OMPD_allocate:
-  case OMPD_task:
-  case OMPD_simd:
-  case OMPD_sections:
-  case OMPD_section:
-  case OMPD_single:
-  case OMPD_master:
-  case OMPD_critical:
-  case OMPD_taskyield:
-  case OMPD_barrier:
-  case OMPD_taskwait:
-  case OMPD_taskgroup:
-  case OMPD_atomic:
-  case OMPD_flush:
-  case OMPD_depobj:
-  case OMPD_scan:
-  case OMPD_teams:
-  case OMPD_target_data:
-  case OMPD_target_exit_data:
-  case OMPD_target_enter_data:
-  case OMPD_distribute:
-  case OMPD_distribute_simd:
-  case OMPD_distribute_parallel_for:
-  case OMPD_distribute_parallel_for_simd:
-  case OMPD_teams_distribute:
-  case OMPD_teams_distribute_simd:
-  case OMPD_teams_distribute_parallel_for:
-  case OMPD_teams_distribute_parallel_for_simd:
-  case OMPD_target_update:
-  case OMPD_declare_simd:
-  case OMPD_declare_variant:
-  case OMPD_begin_declare_variant:
-  case OMPD_end_declare_variant:
-  case OMPD_declare_target:
-  case OMPD_end_declare_target:
-  case OMPD_declare_reduction:
-  case OMPD_declare_mapper:
-  case OMPD_taskloop:
-  case OMPD_taskloop_simd:
-  case OMPD_master_taskloop:
-  case OMPD_master_taskloop_simd:
-  case OMPD_parallel_master_taskloop:
-  case OMPD_parallel_master_taskloop_simd:
-  case OMPD_requires:
-  case OMPD_unknown:
-  default:
-    break;
-  }
-  llvm_unreachable(
-      "Unknown programming model for OpenMP directive on NVPTX target.");
-}
-
-void CGOpenMPRuntimeNVPTX::emitNonSPMDKernel(const OMPExecutableDirective &D,
-                                             StringRef ParentName,
-                                             llvm::Function *&OutlinedFn,
-                                             llvm::Constant *&OutlinedFnID,
-                                             bool IsOffloadEntry,
-                                             const RegionCodeGenTy &CodeGen) {
-  ExecutionRuntimeModesRAII ModeRAII(CurrentExecutionMode);
-  EntryFunctionState EST;
-  WorkerFunctionState WST(CGM, D.getBeginLoc());
-  Work.clear();
-  WrapperFunctionsMap.clear();
-
-  // Emit target region as a standalone region.
-  class NVPTXPrePostActionTy : public PrePostActionTy {
-    CGOpenMPRuntimeNVPTX::EntryFunctionState &EST;
-    CGOpenMPRuntimeNVPTX::WorkerFunctionState &WST;
-
-  public:
-    NVPTXPrePostActionTy(CGOpenMPRuntimeNVPTX::EntryFunctionState &EST,
-                         CGOpenMPRuntimeNVPTX::WorkerFunctionState &WST)
-        : EST(EST), WST(WST) {}
-    void Enter(CodeGenFunction &CGF) override {
-      auto &RT =
-          static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime());
-      RT.emitNonSPMDEntryHeader(CGF, EST, WST);
-      // Skip target region initialization.
-      RT.setLocThreadIdInsertPt(CGF, /*AtCurrentPoint=*/true);
-    }
-    void Exit(CodeGenFunction &CGF) override {
-      auto &RT =
-          static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime());
-      RT.clearLocThreadIdInsertPt(CGF);
-      RT.emitNonSPMDEntryFooter(CGF, EST);
-    }
-  } Action(EST, WST);
-  CodeGen.setAction(Action);
-  IsInTTDRegion = true;
-  // Reserve place for the globalized memory.
-  GlobalizedRecords.emplace_back();
-  if (!KernelStaticGlobalized) {
-    KernelStaticGlobalized = new llvm::GlobalVariable(
-        CGM.getModule(), CGM.VoidPtrTy, /*isConstant=*/false,
-        llvm::GlobalValue::InternalLinkage,
-        llvm::ConstantPointerNull::get(CGM.VoidPtrTy),
-        "_openmp_kernel_static_glob_rd$ptr", /*InsertBefore=*/nullptr,
-        llvm::GlobalValue::NotThreadLocal,
-        CGM.getContext().getTargetAddressSpace(LangAS::cuda_shared));
-  }
-  emitTargetOutlinedFunctionHelper(D, ParentName, OutlinedFn, OutlinedFnID,
-                                   IsOffloadEntry, CodeGen);
-  IsInTTDRegion = false;
-
-  // Now change the name of the worker function to correspond to this target
-  // region's entry function.
-  WST.WorkerFn->setName(Twine(OutlinedFn->getName(), "_worker"));
-
-  // Create the worker function
-  emitWorkerFunction(WST);
-}
-
-// Setup NVPTX threads for master-worker OpenMP scheme.
-void CGOpenMPRuntimeNVPTX::emitNonSPMDEntryHeader(CodeGenFunction &CGF,
-                                                  EntryFunctionState &EST,
-                                                  WorkerFunctionState &WST) {
-  CGBuilderTy &Bld = CGF.Builder;
-
-  llvm::BasicBlock *WorkerBB = CGF.createBasicBlock(".worker");
-  llvm::BasicBlock *MasterCheckBB = CGF.createBasicBlock(".mastercheck");
-  llvm::BasicBlock *MasterBB = CGF.createBasicBlock(".master");
-  EST.ExitBB = CGF.createBasicBlock(".exit");
-
-  llvm::Value *IsWorker =
-      Bld.CreateICmpULT(getNVPTXThreadID(CGF), getThreadLimit(CGF));
-  Bld.CreateCondBr(IsWorker, WorkerBB, MasterCheckBB);
-
-  CGF.EmitBlock(WorkerBB);
-  emitCall(CGF, WST.Loc, WST.WorkerFn);
-  CGF.EmitBranch(EST.ExitBB);
-
-  CGF.EmitBlock(MasterCheckBB);
-  llvm::Value *IsMaster =
-      Bld.CreateICmpEQ(getNVPTXThreadID(CGF), getMasterThreadID(CGF));
-  Bld.CreateCondBr(IsMaster, MasterBB, EST.ExitBB);
-
-  CGF.EmitBlock(MasterBB);
-  IsInTargetMasterThreadRegion = true;
-  // SEQUENTIAL (MASTER) REGION START
-  // First action in sequential region:
-  // Initialize the state of the OpenMP runtime library on the GPU.
-  // TODO: Optimize runtime initialization and pass in correct value.
-  llvm::Value *Args[] = {getThreadLimit(CGF),
-                         Bld.getInt16(/*RequiresOMPRuntime=*/1)};
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_kernel_init), Args);
-
-  // For data sharing, we need to initialize the stack.
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(
-          OMPRTL_NVPTX__kmpc_data_sharing_init_stack));
-
-  emitGenericVarsProlog(CGF, WST.Loc);
-}
-
-void CGOpenMPRuntimeNVPTX::emitNonSPMDEntryFooter(CodeGenFunction &CGF,
-                                                  EntryFunctionState &EST) {
-  IsInTargetMasterThreadRegion = false;
-  if (!CGF.HaveInsertPoint())
-    return;
-
-  emitGenericVarsEpilog(CGF);
-
-  if (!EST.ExitBB)
-    EST.ExitBB = CGF.createBasicBlock(".exit");
-
-  llvm::BasicBlock *TerminateBB = CGF.createBasicBlock(".termination.notifier");
-  CGF.EmitBranch(TerminateBB);
-
-  CGF.EmitBlock(TerminateBB);
-  // Signal termination condition.
-  // TODO: Optimize runtime initialization and pass in correct value.
-  llvm::Value *Args[] = {CGF.Builder.getInt16(/*IsOMPRuntimeInitialized=*/1)};
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_kernel_deinit), Args);
-  // Barrier to terminate worker threads.
-  syncCTAThreads(CGF);
-  // Master thread jumps to exit point.
-  CGF.EmitBranch(EST.ExitBB);
-
-  CGF.EmitBlock(EST.ExitBB);
-  EST.ExitBB = nullptr;
-}
-
-void CGOpenMPRuntimeNVPTX::emitSPMDKernel(const OMPExecutableDirective &D,
-                                          StringRef ParentName,
-                                          llvm::Function *&OutlinedFn,
-                                          llvm::Constant *&OutlinedFnID,
-                                          bool IsOffloadEntry,
-                                          const RegionCodeGenTy &CodeGen) {
-  ExecutionRuntimeModesRAII ModeRAII(
-      CurrentExecutionMode, RequiresFullRuntime,
-      CGM.getLangOpts().OpenMPCUDAForceFullRuntime ||
-          !supportsLightweightRuntime(CGM.getContext(), D));
-  EntryFunctionState EST;
-
-  // Emit target region as a standalone region.
-  class NVPTXPrePostActionTy : public PrePostActionTy {
-    CGOpenMPRuntimeNVPTX &RT;
-    CGOpenMPRuntimeNVPTX::EntryFunctionState &EST;
-    const OMPExecutableDirective &D;
-
-  public:
-    NVPTXPrePostActionTy(CGOpenMPRuntimeNVPTX &RT,
-                         CGOpenMPRuntimeNVPTX::EntryFunctionState &EST,
-                         const OMPExecutableDirective &D)
-        : RT(RT), EST(EST), D(D) {}
-    void Enter(CodeGenFunction &CGF) override {
-      RT.emitSPMDEntryHeader(CGF, EST, D);
-      // Skip target region initialization.
-      RT.setLocThreadIdInsertPt(CGF, /*AtCurrentPoint=*/true);
-    }
-    void Exit(CodeGenFunction &CGF) override {
-      RT.clearLocThreadIdInsertPt(CGF);
-      RT.emitSPMDEntryFooter(CGF, EST);
-    }
-  } Action(*this, EST, D);
-  CodeGen.setAction(Action);
-  IsInTTDRegion = true;
-  // Reserve place for the globalized memory.
-  GlobalizedRecords.emplace_back();
-  if (!KernelStaticGlobalized) {
-    KernelStaticGlobalized = new llvm::GlobalVariable(
-        CGM.getModule(), CGM.VoidPtrTy, /*isConstant=*/false,
-        llvm::GlobalValue::InternalLinkage,
-        llvm::ConstantPointerNull::get(CGM.VoidPtrTy),
-        "_openmp_kernel_static_glob_rd$ptr", /*InsertBefore=*/nullptr,
-        llvm::GlobalValue::NotThreadLocal,
-        CGM.getContext().getTargetAddressSpace(LangAS::cuda_shared));
-  }
-  emitTargetOutlinedFunctionHelper(D, ParentName, OutlinedFn, OutlinedFnID,
-                                   IsOffloadEntry, CodeGen);
-  IsInTTDRegion = false;
-}
-
-void CGOpenMPRuntimeNVPTX::emitSPMDEntryHeader(
-    CodeGenFunction &CGF, EntryFunctionState &EST,
-    const OMPExecutableDirective &D) {
-  CGBuilderTy &Bld = CGF.Builder;
-
-  // Setup BBs in entry function.
-  llvm::BasicBlock *ExecuteBB = CGF.createBasicBlock(".execute");
-  EST.ExitBB = CGF.createBasicBlock(".exit");
-
-  llvm::Value *Args[] = {getThreadLimit(CGF, /*IsInSPMDExecutionMode=*/true),
-                         /*RequiresOMPRuntime=*/
-                         Bld.getInt16(RequiresFullRuntime ? 1 : 0),
-                         /*RequiresDataSharing=*/Bld.getInt16(0)};
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_spmd_kernel_init), Args);
-
-  if (RequiresFullRuntime) {
-    // For data sharing, we need to initialize the stack.
-    CGF.EmitRuntimeCall(createNVPTXRuntimeFunction(
-        OMPRTL_NVPTX__kmpc_data_sharing_init_stack_spmd));
-  }
-
-  CGF.EmitBranch(ExecuteBB);
-
-  CGF.EmitBlock(ExecuteBB);
-
-  IsInTargetMasterThreadRegion = true;
-}
-
-void CGOpenMPRuntimeNVPTX::emitSPMDEntryFooter(CodeGenFunction &CGF,
-                                               EntryFunctionState &EST) {
-  IsInTargetMasterThreadRegion = false;
-  if (!CGF.HaveInsertPoint())
-    return;
-
-  if (!EST.ExitBB)
-    EST.ExitBB = CGF.createBasicBlock(".exit");
-
-  llvm::BasicBlock *OMPDeInitBB = CGF.createBasicBlock(".omp.deinit");
-  CGF.EmitBranch(OMPDeInitBB);
-
-  CGF.EmitBlock(OMPDeInitBB);
-  // DeInitialize the OMP state in the runtime; called by all active threads.
-  llvm::Value *Args[] = {/*RequiresOMPRuntime=*/
-                         CGF.Builder.getInt16(RequiresFullRuntime ? 1 : 0)};
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(
-          OMPRTL_NVPTX__kmpc_spmd_kernel_deinit_v2), Args);
-  CGF.EmitBranch(EST.ExitBB);
-
-  CGF.EmitBlock(EST.ExitBB);
-  EST.ExitBB = nullptr;
-}
-
-// Create a unique global variable to indicate the execution mode of this target
-// region. The execution mode is either 'generic', or 'spmd' depending on the
-// target directive. This variable is picked up by the offload library to setup
-// the device appropriately before kernel launch. If the execution mode is
-// 'generic', the runtime reserves one warp for the master, otherwise, all
-// warps participate in parallel work.
-static void setPropertyExecutionMode(CodeGenModule &CGM, StringRef Name,
-                                     bool Mode) {
-  auto *GVMode =
-      new llvm::GlobalVariable(CGM.getModule(), CGM.Int8Ty, /*isConstant=*/true,
-                               llvm::GlobalValue::WeakAnyLinkage,
-                               llvm::ConstantInt::get(CGM.Int8Ty, Mode ? 0 : 1),
-                               Twine(Name, "_exec_mode"));
-  CGM.addCompilerUsedGlobal(GVMode);
-}
-
-void CGOpenMPRuntimeNVPTX::emitWorkerFunction(WorkerFunctionState &WST) {
-  ASTContext &Ctx = CGM.getContext();
-
-  CodeGenFunction CGF(CGM, /*suppressNewContext=*/true);
-  CGF.StartFunction(GlobalDecl(), Ctx.VoidTy, WST.WorkerFn, WST.CGFI, {},
-                    WST.Loc, WST.Loc);
-  emitWorkerLoop(CGF, WST);
-  CGF.FinishFunction();
-}
-
-void CGOpenMPRuntimeNVPTX::emitWorkerLoop(CodeGenFunction &CGF,
-                                          WorkerFunctionState &WST) {
-  //
-  // The workers enter this loop and wait for parallel work from the master.
-  // When the master encounters a parallel region it sets up the work + variable
-  // arguments, and wakes up the workers.  The workers first check to see if
-  // they are required for the parallel region, i.e., within the # of requested
-  // parallel threads.  The activated workers load the variable arguments and
-  // execute the parallel work.
-  //
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  llvm::BasicBlock *AwaitBB = CGF.createBasicBlock(".await.work");
-  llvm::BasicBlock *SelectWorkersBB = CGF.createBasicBlock(".select.workers");
-  llvm::BasicBlock *ExecuteBB = CGF.createBasicBlock(".execute.parallel");
-  llvm::BasicBlock *TerminateBB = CGF.createBasicBlock(".terminate.parallel");
-  llvm::BasicBlock *BarrierBB = CGF.createBasicBlock(".barrier.parallel");
-  llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".exit");
-
-  CGF.EmitBranch(AwaitBB);
-
-  // Workers wait for work from master.
-  CGF.EmitBlock(AwaitBB);
-  // Wait for parallel work
-  syncCTAThreads(CGF);
-
-  Address WorkFn =
-      CGF.CreateDefaultAlignTempAlloca(CGF.Int8PtrTy, /*Name=*/"work_fn");
-  Address ExecStatus =
-      CGF.CreateDefaultAlignTempAlloca(CGF.Int8Ty, /*Name=*/"exec_status");
-  CGF.InitTempAlloca(ExecStatus, Bld.getInt8(/*C=*/0));
-  CGF.InitTempAlloca(WorkFn, llvm::Constant::getNullValue(CGF.Int8PtrTy));
-
-  // TODO: Optimize runtime initialization and pass in correct value.
-  llvm::Value *Args[] = {WorkFn.getPointer()};
-  llvm::Value *Ret = CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_kernel_parallel), Args);
-  Bld.CreateStore(Bld.CreateZExt(Ret, CGF.Int8Ty), ExecStatus);
-
-  // On termination condition (workid == 0), exit loop.
-  llvm::Value *WorkID = Bld.CreateLoad(WorkFn);
-  llvm::Value *ShouldTerminate = Bld.CreateIsNull(WorkID, "should_terminate");
-  Bld.CreateCondBr(ShouldTerminate, ExitBB, SelectWorkersBB);
-
-  // Activate requested workers.
-  CGF.EmitBlock(SelectWorkersBB);
-  llvm::Value *IsActive =
-      Bld.CreateIsNotNull(Bld.CreateLoad(ExecStatus), "is_active");
-  Bld.CreateCondBr(IsActive, ExecuteBB, BarrierBB);
-
-  // Signal start of parallel region.
-  CGF.EmitBlock(ExecuteBB);
-  // Skip initialization.
-  setLocThreadIdInsertPt(CGF, /*AtCurrentPoint=*/true);
-
-  // Process work items: outlined parallel functions.
-  for (llvm::Function *W : Work) {
-    // Try to match this outlined function.
-    llvm::Value *ID = Bld.CreatePointerBitCastOrAddrSpaceCast(W, CGM.Int8PtrTy);
-
-    llvm::Value *WorkFnMatch =
-        Bld.CreateICmpEQ(Bld.CreateLoad(WorkFn), ID, "work_match");
-
-    llvm::BasicBlock *ExecuteFNBB = CGF.createBasicBlock(".execute.fn");
-    llvm::BasicBlock *CheckNextBB = CGF.createBasicBlock(".check.next");
-    Bld.CreateCondBr(WorkFnMatch, ExecuteFNBB, CheckNextBB);
-
-    // Execute this outlined function.
-    CGF.EmitBlock(ExecuteFNBB);
-
-    // Insert call to work function via shared wrapper. The shared
-    // wrapper takes two arguments:
-    //   - the parallelism level;
-    //   - the thread ID;
-    emitCall(CGF, WST.Loc, W,
-             {Bld.getInt16(/*ParallelLevel=*/0), getThreadID(CGF, WST.Loc)});
-
-    // Go to end of parallel region.
-    CGF.EmitBranch(TerminateBB);
-
-    CGF.EmitBlock(CheckNextBB);
-  }
-  // Default case: call to outlined function through pointer if the target
-  // region makes a declare target call that may contain an orphaned parallel
-  // directive.
-  auto *ParallelFnTy =
-      llvm::FunctionType::get(CGM.VoidTy, {CGM.Int16Ty, CGM.Int32Ty},
-                              /*isVarArg=*/false);
-  llvm::Value *WorkFnCast =
-      Bld.CreateBitCast(WorkID, ParallelFnTy->getPointerTo());
-  // Insert call to work function via shared wrapper. The shared
-  // wrapper takes two arguments:
-  //   - the parallelism level;
-  //   - the thread ID;
-  emitCall(CGF, WST.Loc, {ParallelFnTy, WorkFnCast},
-           {Bld.getInt16(/*ParallelLevel=*/0), getThreadID(CGF, WST.Loc)});
-  // Go to end of parallel region.
-  CGF.EmitBranch(TerminateBB);
-
-  // Signal end of parallel region.
-  CGF.EmitBlock(TerminateBB);
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_kernel_end_parallel),
-      llvm::None);
-  CGF.EmitBranch(BarrierBB);
-
-  // All active and inactive workers wait at a barrier after parallel region.
-  CGF.EmitBlock(BarrierBB);
-  // Barrier after parallel region.
-  syncCTAThreads(CGF);
-  CGF.EmitBranch(AwaitBB);
-
-  // Exit target region.
-  CGF.EmitBlock(ExitBB);
-  // Skip initialization.
-  clearLocThreadIdInsertPt(CGF);
-}
-
-/// Returns specified OpenMP runtime function for the current OpenMP
-/// implementation.  Specialized for the NVPTX device.
-/// \param Function OpenMP runtime function.
-/// \return Specified function.
-llvm::FunctionCallee
-CGOpenMPRuntimeNVPTX::createNVPTXRuntimeFunction(unsigned Function) {
-  llvm::FunctionCallee RTLFn = nullptr;
-  switch (static_cast<OpenMPRTLFunctionNVPTX>(Function)) {
-  case OMPRTL_NVPTX__kmpc_kernel_init: {
-    // Build void __kmpc_kernel_init(kmp_int32 thread_limit, int16_t
-    // RequiresOMPRuntime);
-    llvm::Type *TypeParams[] = {CGM.Int32Ty, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_init");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_kernel_deinit: {
-    // Build void __kmpc_kernel_deinit(int16_t IsOMPRuntimeInitialized);
-    llvm::Type *TypeParams[] = {CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_deinit");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_spmd_kernel_init: {
-    // Build void __kmpc_spmd_kernel_init(kmp_int32 thread_limit,
-    // int16_t RequiresOMPRuntime, int16_t RequiresDataSharing);
-    llvm::Type *TypeParams[] = {CGM.Int32Ty, CGM.Int16Ty, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_spmd_kernel_init");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_spmd_kernel_deinit_v2: {
-    // Build void __kmpc_spmd_kernel_deinit_v2(int16_t RequiresOMPRuntime);
-    llvm::Type *TypeParams[] = {CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_spmd_kernel_deinit_v2");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_kernel_prepare_parallel: {
-    /// Build void __kmpc_kernel_prepare_parallel(
-    /// void *outlined_function);
-    llvm::Type *TypeParams[] = {CGM.Int8PtrTy};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_prepare_parallel");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_kernel_parallel: {
-    /// Build bool __kmpc_kernel_parallel(void **outlined_function);
-    llvm::Type *TypeParams[] = {CGM.Int8PtrPtrTy};
-    llvm::Type *RetTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy);
-    auto *FnTy =
-        llvm::FunctionType::get(RetTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_parallel");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_kernel_end_parallel: {
-    /// Build void __kmpc_kernel_end_parallel();
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, llvm::None, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_kernel_end_parallel");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_serialized_parallel: {
-    // Build void __kmpc_serialized_parallel(ident_t *loc, kmp_int32
-    // global_tid);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_serialized_parallel");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_end_serialized_parallel: {
-    // Build void __kmpc_end_serialized_parallel(ident_t *loc, kmp_int32
-    // global_tid);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_serialized_parallel");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_shuffle_int32: {
-    // Build int32_t __kmpc_shuffle_int32(int32_t element,
-    // int16_t lane_offset, int16_t warp_size);
-    llvm::Type *TypeParams[] = {CGM.Int32Ty, CGM.Int16Ty, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_shuffle_int32");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_shuffle_int64: {
-    // Build int64_t __kmpc_shuffle_int64(int64_t element,
-    // int16_t lane_offset, int16_t warp_size);
-    llvm::Type *TypeParams[] = {CGM.Int64Ty, CGM.Int16Ty, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.Int64Ty, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_shuffle_int64");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_nvptx_parallel_reduce_nowait_v2: {
-    // Build int32_t kmpc_nvptx_parallel_reduce_nowait_v2(ident_t *loc,
-    // kmp_int32 global_tid, kmp_int32 num_vars, size_t reduce_size, void*
-    // reduce_data, void (*kmp_ShuffleReductFctPtr)(void *rhsData, int16_t
-    // lane_id, int16_t lane_offset, int16_t Algorithm Version), void
-    // (*kmp_InterWarpCopyFctPtr)(void* src, int warp_num));
-    llvm::Type *ShuffleReduceTypeParams[] = {CGM.VoidPtrTy, CGM.Int16Ty,
-                                             CGM.Int16Ty, CGM.Int16Ty};
-    auto *ShuffleReduceFnTy =
-        llvm::FunctionType::get(CGM.VoidTy, ShuffleReduceTypeParams,
-                                /*isVarArg=*/false);
-    llvm::Type *InterWarpCopyTypeParams[] = {CGM.VoidPtrTy, CGM.Int32Ty};
-    auto *InterWarpCopyFnTy =
-        llvm::FunctionType::get(CGM.VoidTy, InterWarpCopyTypeParams,
-                                /*isVarArg=*/false);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(),
-                                CGM.Int32Ty,
-                                CGM.Int32Ty,
-                                CGM.SizeTy,
-                                CGM.VoidPtrTy,
-                                ShuffleReduceFnTy->getPointerTo(),
-                                InterWarpCopyFnTy->getPointerTo()};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(
-        FnTy, /*Name=*/"__kmpc_nvptx_parallel_reduce_nowait_v2");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_end_reduce_nowait: {
-    // Build __kmpc_end_reduce_nowait(kmp_int32 global_tid);
-    llvm::Type *TypeParams[] = {CGM.Int32Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(
-        FnTy, /*Name=*/"__kmpc_nvptx_end_reduce_nowait");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_nvptx_teams_reduce_nowait_v2: {
-    // Build int32_t __kmpc_nvptx_teams_reduce_nowait_v2(ident_t *loc, kmp_int32
-    // global_tid, void *global_buffer, int32_t num_of_records, void*
-    // reduce_data,
-    // void (*kmp_ShuffleReductFctPtr)(void *rhsData, int16_t lane_id, int16_t
-    // lane_offset, int16_t shortCircuit),
-    // void (*kmp_InterWarpCopyFctPtr)(void* src, int32_t warp_num), void
-    // (*kmp_ListToGlobalCpyFctPtr)(void *buffer, int idx, void *reduce_data),
-    // void (*kmp_GlobalToListCpyFctPtr)(void *buffer, int idx,
-    // void *reduce_data), void (*kmp_GlobalToListCpyPtrsFctPtr)(void *buffer,
-    // int idx, void *reduce_data), void (*kmp_GlobalToListRedFctPtr)(void
-    // *buffer, int idx, void *reduce_data));
-    llvm::Type *ShuffleReduceTypeParams[] = {CGM.VoidPtrTy, CGM.Int16Ty,
-                                             CGM.Int16Ty, CGM.Int16Ty};
-    auto *ShuffleReduceFnTy =
-        llvm::FunctionType::get(CGM.VoidTy, ShuffleReduceTypeParams,
-                                /*isVarArg=*/false);
-    llvm::Type *InterWarpCopyTypeParams[] = {CGM.VoidPtrTy, CGM.Int32Ty};
-    auto *InterWarpCopyFnTy =
-        llvm::FunctionType::get(CGM.VoidTy, InterWarpCopyTypeParams,
-                                /*isVarArg=*/false);
-    llvm::Type *GlobalListTypeParams[] = {CGM.VoidPtrTy, CGM.IntTy,
-                                          CGM.VoidPtrTy};
-    auto *GlobalListFnTy =
-        llvm::FunctionType::get(CGM.VoidTy, GlobalListTypeParams,
-                                /*isVarArg=*/false);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(),
-                                CGM.Int32Ty,
-                                CGM.VoidPtrTy,
-                                CGM.Int32Ty,
-                                CGM.VoidPtrTy,
-                                ShuffleReduceFnTy->getPointerTo(),
-                                InterWarpCopyFnTy->getPointerTo(),
-                                GlobalListFnTy->getPointerTo(),
-                                GlobalListFnTy->getPointerTo(),
-                                GlobalListFnTy->getPointerTo(),
-                                GlobalListFnTy->getPointerTo()};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(
-        FnTy, /*Name=*/"__kmpc_nvptx_teams_reduce_nowait_v2");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_data_sharing_init_stack: {
-    /// Build void __kmpc_data_sharing_init_stack();
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, llvm::None, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_data_sharing_init_stack");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_data_sharing_init_stack_spmd: {
-    /// Build void __kmpc_data_sharing_init_stack_spmd();
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, llvm::None, /*isVarArg*/ false);
-    RTLFn =
-        CGM.CreateRuntimeFunction(FnTy, "__kmpc_data_sharing_init_stack_spmd");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_data_sharing_coalesced_push_stack: {
-    // Build void *__kmpc_data_sharing_coalesced_push_stack(size_t size,
-    // int16_t UseSharedMemory);
-    llvm::Type *TypeParams[] = {CGM.SizeTy, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(
-        FnTy, /*Name=*/"__kmpc_data_sharing_coalesced_push_stack");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_data_sharing_push_stack: {
-    // Build void *__kmpc_data_sharing_push_stack(size_t size, int16_t
-    // UseSharedMemory);
-    llvm::Type *TypeParams[] = {CGM.SizeTy, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(
-        FnTy, /*Name=*/"__kmpc_data_sharing_push_stack");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_data_sharing_pop_stack: {
-    // Build void __kmpc_data_sharing_pop_stack(void *a);
-    llvm::Type *TypeParams[] = {CGM.VoidPtrTy};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy,
-                                      /*Name=*/"__kmpc_data_sharing_pop_stack");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_begin_sharing_variables: {
-    /// Build void __kmpc_begin_sharing_variables(void ***args,
-    /// size_t n_args);
-    llvm::Type *TypeParams[] = {CGM.Int8PtrPtrTy->getPointerTo(), CGM.SizeTy};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_begin_sharing_variables");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_end_sharing_variables: {
-    /// Build void __kmpc_end_sharing_variables();
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, llvm::None, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_sharing_variables");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_get_shared_variables: {
-    /// Build void __kmpc_get_shared_variables(void ***GlobalArgs);
-    llvm::Type *TypeParams[] = {CGM.Int8PtrPtrTy->getPointerTo()};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_get_shared_variables");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_parallel_level: {
-    // Build uint16_t __kmpc_parallel_level(ident_t *loc, kmp_int32 global_tid);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.Int16Ty, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_parallel_level");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_is_spmd_exec_mode: {
-    // Build int8_t __kmpc_is_spmd_exec_mode();
-    auto *FnTy = llvm::FunctionType::get(CGM.Int8Ty, /*isVarArg=*/false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_is_spmd_exec_mode");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_get_team_static_memory: {
-    // Build void __kmpc_get_team_static_memory(int16_t isSPMDExecutionMode,
-    // const void *buf, size_t size, int16_t is_shared, const void **res);
-    llvm::Type *TypeParams[] = {CGM.Int16Ty, CGM.VoidPtrTy, CGM.SizeTy,
-                                CGM.Int16Ty, CGM.VoidPtrPtrTy};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_get_team_static_memory");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_restore_team_static_memory: {
-    // Build void __kmpc_restore_team_static_memory(int16_t isSPMDExecutionMode,
-    // int16_t is_shared);
-    llvm::Type *TypeParams[] = {CGM.Int16Ty, CGM.Int16Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false);
-    RTLFn =
-        CGM.CreateRuntimeFunction(FnTy, "__kmpc_restore_team_static_memory");
-    break;
-  }
-  case OMPRTL__kmpc_barrier: {
-    // Build void __kmpc_barrier(ident_t *loc, kmp_int32 global_tid);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn =
-        CGM.CreateConvergentRuntimeFunction(FnTy, /*Name*/ "__kmpc_barrier");
-    break;
-  }
-  case OMPRTL__kmpc_barrier_simple_spmd: {
-    // Build void __kmpc_barrier_simple_spmd(ident_t *loc, kmp_int32
-    // global_tid);
-    llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty};
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false);
-    RTLFn = CGM.CreateConvergentRuntimeFunction(
-        FnTy, /*Name*/ "__kmpc_barrier_simple_spmd");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_warp_active_thread_mask: {
-    // Build int32_t __kmpc_warp_active_thread_mask(void);
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.Int32Ty, llvm::None, /*isVarArg=*/false);
-    RTLFn = CGM.CreateConvergentRuntimeFunction(FnTy, "__kmpc_warp_active_thread_mask");
-    break;
-  }
-  case OMPRTL_NVPTX__kmpc_syncwarp: {
-    // Build void __kmpc_syncwarp(kmp_int32 Mask);
-    auto *FnTy =
-        llvm::FunctionType::get(CGM.VoidTy, CGM.Int32Ty, /*isVarArg=*/false);
-    RTLFn = CGM.CreateConvergentRuntimeFunction(FnTy, "__kmpc_syncwarp");
-    break;
-  }
-  }
-  return RTLFn;
-}
-
-void CGOpenMPRuntimeNVPTX::createOffloadEntry(llvm::Constant *ID,
-                                              llvm::Constant *Addr,
-                                              uint64_t Size, int32_t,
-                                              llvm::GlobalValue::LinkageTypes) {
-  // TODO: Add support for global variables on the device after declare target
-  // support.
-  if (!isa<llvm::Function>(Addr))
-    return;
-  llvm::Module &M = CGM.getModule();
-  llvm::LLVMContext &Ctx = CGM.getLLVMContext();
-
-  // Get "nvvm.annotations" metadata node
-  llvm::NamedMDNode *MD = M.getOrInsertNamedMetadata("nvvm.annotations");
-
-  llvm::Metadata *MDVals[] = {
-      llvm::ConstantAsMetadata::get(Addr), llvm::MDString::get(Ctx, "kernel"),
-      llvm::ConstantAsMetadata::get(
-          llvm::ConstantInt::get(llvm::Type::getInt32Ty(Ctx), 1))};
-  // Append metadata to nvvm.annotations
-  MD->addOperand(llvm::MDNode::get(Ctx, MDVals));
-}
-
-void CGOpenMPRuntimeNVPTX::emitTargetOutlinedFunction(
-    const OMPExecutableDirective &D, StringRef ParentName,
-    llvm::Function *&OutlinedFn, llvm::Constant *&OutlinedFnID,
-    bool IsOffloadEntry, const RegionCodeGenTy &CodeGen) {
-  if (!IsOffloadEntry) // Nothing to do.
-    return;
-
-  assert(!ParentName.empty() && "Invalid target region parent name!");
-
-  bool Mode = supportsSPMDExecutionMode(CGM.getContext(), D);
-  if (Mode)
-    emitSPMDKernel(D, ParentName, OutlinedFn, OutlinedFnID, IsOffloadEntry,
-                   CodeGen);
-  else
-    emitNonSPMDKernel(D, ParentName, OutlinedFn, OutlinedFnID, IsOffloadEntry,
-                      CodeGen);
-
-  setPropertyExecutionMode(CGM, OutlinedFn->getName(), Mode);
-}
-
-namespace {
-LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();
-/// Enum for accesseing the reserved_2 field of the ident_t struct.
-enum ModeFlagsTy : unsigned {
-  /// Bit set to 1 when in SPMD mode.
-  KMP_IDENT_SPMD_MODE = 0x01,
-  /// Bit set to 1 when a simplified runtime is used.
-  KMP_IDENT_SIMPLE_RT_MODE = 0x02,
-  LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue=*/KMP_IDENT_SIMPLE_RT_MODE)
-};
-
-/// Special mode Undefined. Is the combination of Non-SPMD mode + SimpleRuntime.
-static const ModeFlagsTy UndefinedMode =
-    (~KMP_IDENT_SPMD_MODE) & KMP_IDENT_SIMPLE_RT_MODE;
-} // anonymous namespace
-
-unsigned CGOpenMPRuntimeNVPTX::getDefaultLocationReserved2Flags() const {
-  switch (getExecutionMode()) {
-  case EM_SPMD:
-    if (requiresFullRuntime())
-      return KMP_IDENT_SPMD_MODE & (~KMP_IDENT_SIMPLE_RT_MODE);
-    return KMP_IDENT_SPMD_MODE | KMP_IDENT_SIMPLE_RT_MODE;
-  case EM_NonSPMD:
-    assert(requiresFullRuntime() && "Expected full runtime.");
-    return (~KMP_IDENT_SPMD_MODE) & (~KMP_IDENT_SIMPLE_RT_MODE);
-  case EM_Unknown:
-    return UndefinedMode;
-  }
-  llvm_unreachable("Unknown flags are requested.");
-}
-
-CGOpenMPRuntimeNVPTX::CGOpenMPRuntimeNVPTX(CodeGenModule &CGM)
-    : CGOpenMPRuntime(CGM, "_", "$") {
-  if (!CGM.getLangOpts().OpenMPIsDevice)
-    llvm_unreachable("OpenMP NVPTX can only handle device code.");
-}
-
-void CGOpenMPRuntimeNVPTX::emitProcBindClause(CodeGenFunction &CGF,
-                                              ProcBindKind ProcBind,
-                                              SourceLocation Loc) {
-  // Do nothing in case of SPMD mode and L0 parallel.
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
-    return;
-
-  CGOpenMPRuntime::emitProcBindClause(CGF, ProcBind, Loc);
-}
-
-void CGOpenMPRuntimeNVPTX::emitNumThreadsClause(CodeGenFunction &CGF,
-                                                llvm::Value *NumThreads,
-                                                SourceLocation Loc) {
-  // Do nothing in case of SPMD mode and L0 parallel.
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
-    return;
-
-  CGOpenMPRuntime::emitNumThreadsClause(CGF, NumThreads, Loc);
-}
-
-void CGOpenMPRuntimeNVPTX::emitNumTeamsClause(CodeGenFunction &CGF,
-                                              const Expr *NumTeams,
-                                              const Expr *ThreadLimit,
-                                              SourceLocation Loc) {}
-
-llvm::Function *CGOpenMPRuntimeNVPTX::emitParallelOutlinedFunction(
-    const OMPExecutableDirective &D, const VarDecl *ThreadIDVar,
-    OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) {
-  // Emit target region as a standalone region.
-  class NVPTXPrePostActionTy : public PrePostActionTy {
-    bool &IsInParallelRegion;
-    bool PrevIsInParallelRegion;
-
-  public:
-    NVPTXPrePostActionTy(bool &IsInParallelRegion)
-        : IsInParallelRegion(IsInParallelRegion) {}
-    void Enter(CodeGenFunction &CGF) override {
-      PrevIsInParallelRegion = IsInParallelRegion;
-      IsInParallelRegion = true;
-    }
-    void Exit(CodeGenFunction &CGF) override {
-      IsInParallelRegion = PrevIsInParallelRegion;
-    }
-  } Action(IsInParallelRegion);
-  CodeGen.setAction(Action);
-  bool PrevIsInTTDRegion = IsInTTDRegion;
-  IsInTTDRegion = false;
-  bool PrevIsInTargetMasterThreadRegion = IsInTargetMasterThreadRegion;
-  IsInTargetMasterThreadRegion = false;
-  auto *OutlinedFun =
-      cast<llvm::Function>(CGOpenMPRuntime::emitParallelOutlinedFunction(
-          D, ThreadIDVar, InnermostKind, CodeGen));
-  if (CGM.getLangOpts().Optimize) {
-    OutlinedFun->removeFnAttr(llvm::Attribute::NoInline);
-    OutlinedFun->removeFnAttr(llvm::Attribute::OptimizeNone);
-    OutlinedFun->addFnAttr(llvm::Attribute::AlwaysInline);
-  }
-  IsInTargetMasterThreadRegion = PrevIsInTargetMasterThreadRegion;
-  IsInTTDRegion = PrevIsInTTDRegion;
-  if (getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD &&
-      !IsInParallelRegion) {
-    llvm::Function *WrapperFun =
-        createParallelDataSharingWrapper(OutlinedFun, D);
-    WrapperFunctionsMap[OutlinedFun] = WrapperFun;
-  }
-
-  return OutlinedFun;
-}
-
-/// Get list of lastprivate variables from the teams distribute ... or
-/// teams {distribute ...} directives.
-static void
-getDistributeLastprivateVars(ASTContext &Ctx, const OMPExecutableDirective &D,
-                             llvm::SmallVectorImpl<const ValueDecl *> &Vars) {
-  assert(isOpenMPTeamsDirective(D.getDirectiveKind()) &&
-         "expected teams directive.");
-  const OMPExecutableDirective *Dir = &D;
-  if (!isOpenMPDistributeDirective(D.getDirectiveKind())) {
-    if (const Stmt *S = CGOpenMPRuntime::getSingleCompoundChild(
-            Ctx,
-            D.getInnermostCapturedStmt()->getCapturedStmt()->IgnoreContainers(
-                /*IgnoreCaptured=*/true))) {
-      Dir = dyn_cast_or_null<OMPExecutableDirective>(S);
-      if (Dir && !isOpenMPDistributeDirective(Dir->getDirectiveKind()))
-        Dir = nullptr;
-    }
-  }
-  if (!Dir)
-    return;
-  for (const auto *C : Dir->getClausesOfKind<OMPLastprivateClause>()) {
-    for (const Expr *E : C->getVarRefs())
-      Vars.push_back(getPrivateItem(E));
-  }
-}
-
-/// Get list of reduction variables from the teams ... directives.
-static void
-getTeamsReductionVars(ASTContext &Ctx, const OMPExecutableDirective &D,
-                      llvm::SmallVectorImpl<const ValueDecl *> &Vars) {
-  assert(isOpenMPTeamsDirective(D.getDirectiveKind()) &&
-         "expected teams directive.");
-  for (const auto *C : D.getClausesOfKind<OMPReductionClause>()) {
-    for (const Expr *E : C->privates())
-      Vars.push_back(getPrivateItem(E));
-  }
-}
-
-llvm::Function *CGOpenMPRuntimeNVPTX::emitTeamsOutlinedFunction(
-    const OMPExecutableDirective &D, const VarDecl *ThreadIDVar,
-    OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) {
-  SourceLocation Loc = D.getBeginLoc();
-
-  const RecordDecl *GlobalizedRD = nullptr;
-  llvm::SmallVector<const ValueDecl *, 4> LastPrivatesReductions;
-  llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *> MappedDeclsFields;
-  // Globalize team reductions variable unconditionally in all modes.
-  if (getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD)
-    getTeamsReductionVars(CGM.getContext(), D, LastPrivatesReductions);
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD) {
-    getDistributeLastprivateVars(CGM.getContext(), D, LastPrivatesReductions);
-    if (!LastPrivatesReductions.empty()) {
-      GlobalizedRD = ::buildRecordForGlobalizedVars(
-          CGM.getContext(), llvm::None, LastPrivatesReductions,
-          MappedDeclsFields, WarpSize);
-    }
-  } else if (!LastPrivatesReductions.empty()) {
-    assert(!TeamAndReductions.first &&
-           "Previous team declaration is not expected.");
-    TeamAndReductions.first = D.getCapturedStmt(OMPD_teams)->getCapturedDecl();
-    std::swap(TeamAndReductions.second, LastPrivatesReductions);
-  }
-
-  // Emit target region as a standalone region.
-  class NVPTXPrePostActionTy : public PrePostActionTy {
-    SourceLocation &Loc;
-    const RecordDecl *GlobalizedRD;
-    llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-        &MappedDeclsFields;
-
-  public:
-    NVPTXPrePostActionTy(
-        SourceLocation &Loc, const RecordDecl *GlobalizedRD,
-        llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-            &MappedDeclsFields)
-        : Loc(Loc), GlobalizedRD(GlobalizedRD),
-          MappedDeclsFields(MappedDeclsFields) {}
-    void Enter(CodeGenFunction &CGF) override {
-      auto &Rt =
-          static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime());
-      if (GlobalizedRD) {
-        auto I = Rt.FunctionGlobalizedDecls.try_emplace(CGF.CurFn).first;
-        I->getSecond().GlobalRecord = GlobalizedRD;
-        I->getSecond().MappedParams =
-            std::make_unique<CodeGenFunction::OMPMapVars>();
-        DeclToAddrMapTy &Data = I->getSecond().LocalVarData;
-        for (const auto &Pair : MappedDeclsFields) {
-          assert(Pair.getFirst()->isCanonicalDecl() &&
-                 "Expected canonical declaration");
-          Data.insert(std::make_pair(Pair.getFirst(),
-                                     MappedVarData(Pair.getSecond(),
-                                                   /*IsOnePerTeam=*/true)));
-        }
-      }
-      Rt.emitGenericVarsProlog(CGF, Loc);
-    }
-    void Exit(CodeGenFunction &CGF) override {
-      static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime())
-          .emitGenericVarsEpilog(CGF);
-    }
-  } Action(Loc, GlobalizedRD, MappedDeclsFields);
-  CodeGen.setAction(Action);
-  llvm::Function *OutlinedFun = CGOpenMPRuntime::emitTeamsOutlinedFunction(
-      D, ThreadIDVar, InnermostKind, CodeGen);
-  if (CGM.getLangOpts().Optimize) {
-    OutlinedFun->removeFnAttr(llvm::Attribute::NoInline);
-    OutlinedFun->removeFnAttr(llvm::Attribute::OptimizeNone);
-    OutlinedFun->addFnAttr(llvm::Attribute::AlwaysInline);
-  }
-
-  return OutlinedFun;
-}
-
-void CGOpenMPRuntimeNVPTX::emitGenericVarsProlog(CodeGenFunction &CGF,
-                                                 SourceLocation Loc,
-                                                 bool WithSPMDCheck) {
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic &&
-      getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD)
-    return;
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  const auto I = FunctionGlobalizedDecls.find(CGF.CurFn);
-  if (I == FunctionGlobalizedDecls.end())
-    return;
-  if (const RecordDecl *GlobalizedVarsRecord = I->getSecond().GlobalRecord) {
-    QualType GlobalRecTy = CGM.getContext().getRecordType(GlobalizedVarsRecord);
-    QualType SecGlobalRecTy;
-
-    // Recover pointer to this function's global record. The runtime will
-    // handle the specifics of the allocation of the memory.
-    // Use actual memory size of the record including the padding
-    // for alignment purposes.
-    unsigned Alignment =
-        CGM.getContext().getTypeAlignInChars(GlobalRecTy).getQuantity();
-    unsigned GlobalRecordSize =
-        CGM.getContext().getTypeSizeInChars(GlobalRecTy).getQuantity();
-    GlobalRecordSize = llvm::alignTo(GlobalRecordSize, Alignment);
-
-    llvm::PointerType *GlobalRecPtrTy =
-        CGF.ConvertTypeForMem(GlobalRecTy)->getPointerTo();
-    llvm::Value *GlobalRecCastAddr;
-    llvm::Value *IsTTD = nullptr;
-    if (!IsInTTDRegion &&
-        (WithSPMDCheck ||
-         getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_Unknown)) {
-      llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".exit");
-      llvm::BasicBlock *SPMDBB = CGF.createBasicBlock(".spmd");
-      llvm::BasicBlock *NonSPMDBB = CGF.createBasicBlock(".non-spmd");
-      if (I->getSecond().SecondaryGlobalRecord.hasValue()) {
-        llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
-        llvm::Value *ThreadID = getThreadID(CGF, Loc);
-        llvm::Value *PL = CGF.EmitRuntimeCall(
-            createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_parallel_level),
-            {RTLoc, ThreadID});
-        IsTTD = Bld.CreateIsNull(PL);
-      }
-      llvm::Value *IsSPMD = Bld.CreateIsNotNull(CGF.EmitNounwindRuntimeCall(
-          createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_is_spmd_exec_mode)));
-      Bld.CreateCondBr(IsSPMD, SPMDBB, NonSPMDBB);
-      // There is no need to emit line number for unconditional branch.
-      (void)ApplyDebugLocation::CreateEmpty(CGF);
-      CGF.EmitBlock(SPMDBB);
-      Address RecPtr = Address(llvm::ConstantPointerNull::get(GlobalRecPtrTy),
-                               CharUnits::fromQuantity(Alignment));
-      CGF.EmitBranch(ExitBB);
-      // There is no need to emit line number for unconditional branch.
-      (void)ApplyDebugLocation::CreateEmpty(CGF);
-      CGF.EmitBlock(NonSPMDBB);
-      llvm::Value *Size = llvm::ConstantInt::get(CGM.SizeTy, GlobalRecordSize);
-      if (const RecordDecl *SecGlobalizedVarsRecord =
-              I->getSecond().SecondaryGlobalRecord.getValueOr(nullptr)) {
-        SecGlobalRecTy =
-            CGM.getContext().getRecordType(SecGlobalizedVarsRecord);
-
-        // Recover pointer to this function's global record. The runtime will
-        // handle the specifics of the allocation of the memory.
-        // Use actual memory size of the record including the padding
-        // for alignment purposes.
-        unsigned Alignment =
-            CGM.getContext().getTypeAlignInChars(SecGlobalRecTy).getQuantity();
-        unsigned GlobalRecordSize =
-            CGM.getContext().getTypeSizeInChars(SecGlobalRecTy).getQuantity();
-        GlobalRecordSize = llvm::alignTo(GlobalRecordSize, Alignment);
-        Size = Bld.CreateSelect(
-            IsTTD, llvm::ConstantInt::get(CGM.SizeTy, GlobalRecordSize), Size);
-      }
-      // TODO: allow the usage of shared memory to be controlled by
-      // the user, for now, default to global.
-      llvm::Value *GlobalRecordSizeArg[] = {
-          Size, CGF.Builder.getInt16(/*UseSharedMemory=*/0)};
-      llvm::Value *GlobalRecValue = CGF.EmitRuntimeCall(
-          createNVPTXRuntimeFunction(
-              OMPRTL_NVPTX__kmpc_data_sharing_coalesced_push_stack),
-          GlobalRecordSizeArg);
-      GlobalRecCastAddr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-          GlobalRecValue, GlobalRecPtrTy);
-      CGF.EmitBlock(ExitBB);
-      auto *Phi = Bld.CreatePHI(GlobalRecPtrTy,
-                                /*NumReservedValues=*/2, "_select_stack");
-      Phi->addIncoming(RecPtr.getPointer(), SPMDBB);
-      Phi->addIncoming(GlobalRecCastAddr, NonSPMDBB);
-      GlobalRecCastAddr = Phi;
-      I->getSecond().GlobalRecordAddr = Phi;
-      I->getSecond().IsInSPMDModeFlag = IsSPMD;
-    } else if (!CGM.getLangOpts().OpenMPCUDATargetParallel && IsInTTDRegion) {
-      assert(GlobalizedRecords.back().Records.size() < 2 &&
-             "Expected less than 2 globalized records: one for target and one "
-             "for teams.");
-      unsigned Offset = 0;
-      for (const RecordDecl *RD : GlobalizedRecords.back().Records) {
-        QualType RDTy = CGM.getContext().getRecordType(RD);
-        unsigned Alignment =
-            CGM.getContext().getTypeAlignInChars(RDTy).getQuantity();
-        unsigned Size = CGM.getContext().getTypeSizeInChars(RDTy).getQuantity();
-        Offset =
-            llvm::alignTo(llvm::alignTo(Offset, Alignment) + Size, Alignment);
-      }
-      unsigned Alignment =
-          CGM.getContext().getTypeAlignInChars(GlobalRecTy).getQuantity();
-      Offset = llvm::alignTo(Offset, Alignment);
-      GlobalizedRecords.back().Records.push_back(GlobalizedVarsRecord);
-      ++GlobalizedRecords.back().RegionCounter;
-      if (GlobalizedRecords.back().Records.size() == 1) {
-        assert(KernelStaticGlobalized &&
-               "Kernel static pointer must be initialized already.");
-        auto *UseSharedMemory = new llvm::GlobalVariable(
-            CGM.getModule(), CGM.Int16Ty, /*isConstant=*/true,
-            llvm::GlobalValue::InternalLinkage, nullptr,
-            "_openmp_static_kernel$is_shared");
-        UseSharedMemory->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
-        QualType Int16Ty = CGM.getContext().getIntTypeForBitwidth(
-            /*DestWidth=*/16, /*Signed=*/0);
-        llvm::Value *IsInSharedMemory = CGF.EmitLoadOfScalar(
-            Address(UseSharedMemory,
-                    CGM.getContext().getTypeAlignInChars(Int16Ty)),
-            /*Volatile=*/false, Int16Ty, Loc);
-        auto *StaticGlobalized = new llvm::GlobalVariable(
-            CGM.getModule(), CGM.Int8Ty, /*isConstant=*/false,
-            llvm::GlobalValue::CommonLinkage, nullptr);
-        auto *RecSize = new llvm::GlobalVariable(
-            CGM.getModule(), CGM.SizeTy, /*isConstant=*/true,
-            llvm::GlobalValue::InternalLinkage, nullptr,
-            "_openmp_static_kernel$size");
-        RecSize->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
-        llvm::Value *Ld = CGF.EmitLoadOfScalar(
-            Address(RecSize, CGM.getSizeAlign()), /*Volatile=*/false,
-            CGM.getContext().getSizeType(), Loc);
-        llvm::Value *ResAddr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-            KernelStaticGlobalized, CGM.VoidPtrPtrTy);
-        llvm::Value *GlobalRecordSizeArg[] = {
-            llvm::ConstantInt::get(
-                CGM.Int16Ty,
-                getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD ? 1 : 0),
-            StaticGlobalized, Ld, IsInSharedMemory, ResAddr};
-        CGF.EmitRuntimeCall(createNVPTXRuntimeFunction(
-                                OMPRTL_NVPTX__kmpc_get_team_static_memory),
-                            GlobalRecordSizeArg);
-        GlobalizedRecords.back().Buffer = StaticGlobalized;
-        GlobalizedRecords.back().RecSize = RecSize;
-        GlobalizedRecords.back().UseSharedMemory = UseSharedMemory;
-        GlobalizedRecords.back().Loc = Loc;
-      }
-      assert(KernelStaticGlobalized && "Global address must be set already.");
-      Address FrameAddr = CGF.EmitLoadOfPointer(
-          Address(KernelStaticGlobalized, CGM.getPointerAlign()),
-          CGM.getContext()
-              .getPointerType(CGM.getContext().VoidPtrTy)
-              .castAs<PointerType>());
-      llvm::Value *GlobalRecValue =
-          Bld.CreateConstInBoundsGEP(FrameAddr, Offset).getPointer();
-      I->getSecond().GlobalRecordAddr = GlobalRecValue;
-      I->getSecond().IsInSPMDModeFlag = nullptr;
-      GlobalRecCastAddr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-          GlobalRecValue, CGF.ConvertTypeForMem(GlobalRecTy)->getPointerTo());
-    } else {
-      // TODO: allow the usage of shared memory to be controlled by
-      // the user, for now, default to global.
-      bool UseSharedMemory =
-          IsInTTDRegion && GlobalRecordSize <= SharedMemorySize;
-      llvm::Value *GlobalRecordSizeArg[] = {
-          llvm::ConstantInt::get(CGM.SizeTy, GlobalRecordSize),
-          CGF.Builder.getInt16(UseSharedMemory ? 1 : 0)};
-      llvm::Value *GlobalRecValue = CGF.EmitRuntimeCall(
-          createNVPTXRuntimeFunction(
-              IsInTTDRegion
-                  ? OMPRTL_NVPTX__kmpc_data_sharing_push_stack
-                  : OMPRTL_NVPTX__kmpc_data_sharing_coalesced_push_stack),
-          GlobalRecordSizeArg);
-      GlobalRecCastAddr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-          GlobalRecValue, GlobalRecPtrTy);
-      I->getSecond().GlobalRecordAddr = GlobalRecValue;
-      I->getSecond().IsInSPMDModeFlag = nullptr;
-    }
-    LValue Base =
-        CGF.MakeNaturalAlignPointeeAddrLValue(GlobalRecCastAddr, GlobalRecTy);
-
-    // Emit the "global alloca" which is a GEP from the global declaration
-    // record using the pointer returned by the runtime.
-    LValue SecBase;
-    decltype(I->getSecond().LocalVarData)::const_iterator SecIt;
-    if (IsTTD) {
-      SecIt = I->getSecond().SecondaryLocalVarData->begin();
-      llvm::PointerType *SecGlobalRecPtrTy =
-          CGF.ConvertTypeForMem(SecGlobalRecTy)->getPointerTo();
-      SecBase = CGF.MakeNaturalAlignPointeeAddrLValue(
-          Bld.CreatePointerBitCastOrAddrSpaceCast(
-              I->getSecond().GlobalRecordAddr, SecGlobalRecPtrTy),
-          SecGlobalRecTy);
-    }
-    for (auto &Rec : I->getSecond().LocalVarData) {
-      bool EscapedParam = I->getSecond().EscapedParameters.count(Rec.first);
-      llvm::Value *ParValue;
-      if (EscapedParam) {
-        const auto *VD = cast<VarDecl>(Rec.first);
-        LValue ParLVal =
-            CGF.MakeAddrLValue(CGF.GetAddrOfLocalVar(VD), VD->getType());
-        ParValue = CGF.EmitLoadOfScalar(ParLVal, Loc);
-      }
-      LValue VarAddr = CGF.EmitLValueForField(Base, Rec.second.FD);
-      // Emit VarAddr basing on lane-id if required.
-      QualType VarTy;
-      if (Rec.second.IsOnePerTeam) {
-        VarTy = Rec.second.FD->getType();
-      } else {
-        llvm::Value *Ptr = CGF.Builder.CreateInBoundsGEP(
-            VarAddr.getAddress(CGF).getPointer(),
-            {Bld.getInt32(0), getNVPTXLaneID(CGF)});
-        VarTy =
-            Rec.second.FD->getType()->castAsArrayTypeUnsafe()->getElementType();
-        VarAddr = CGF.MakeAddrLValue(
-            Address(Ptr, CGM.getContext().getDeclAlign(Rec.first)), VarTy,
-            AlignmentSource::Decl);
-      }
-      Rec.second.PrivateAddr = VarAddr.getAddress(CGF);
-      if (!IsInTTDRegion &&
-          (WithSPMDCheck ||
-           getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_Unknown)) {
-        assert(I->getSecond().IsInSPMDModeFlag &&
-               "Expected unknown execution mode or required SPMD check.");
-        if (IsTTD) {
-          assert(SecIt->second.IsOnePerTeam &&
-                 "Secondary glob data must be one per team.");
-          LValue SecVarAddr = CGF.EmitLValueForField(SecBase, SecIt->second.FD);
-          VarAddr.setAddress(
-              Address(Bld.CreateSelect(IsTTD, SecVarAddr.getPointer(CGF),
-                                       VarAddr.getPointer(CGF)),
-                      VarAddr.getAlignment()));
-          Rec.second.PrivateAddr = VarAddr.getAddress(CGF);
-        }
-        Address GlobalPtr = Rec.second.PrivateAddr;
-        Address LocalAddr = CGF.CreateMemTemp(VarTy, Rec.second.FD->getName());
-        Rec.second.PrivateAddr = Address(
-            Bld.CreateSelect(I->getSecond().IsInSPMDModeFlag,
-                             LocalAddr.getPointer(), GlobalPtr.getPointer()),
-            LocalAddr.getAlignment());
-      }
-      if (EscapedParam) {
-        const auto *VD = cast<VarDecl>(Rec.first);
-        CGF.EmitStoreOfScalar(ParValue, VarAddr);
-        I->getSecond().MappedParams->setVarAddr(CGF, VD,
-                                                VarAddr.getAddress(CGF));
-      }
-      if (IsTTD)
-        ++SecIt;
-    }
-  }
-  for (const ValueDecl *VD : I->getSecond().EscapedVariableLengthDecls) {
-    // Recover pointer to this function's global record. The runtime will
-    // handle the specifics of the allocation of the memory.
-    // Use actual memory size of the record including the padding
-    // for alignment purposes.
-    CGBuilderTy &Bld = CGF.Builder;
-    llvm::Value *Size = CGF.getTypeSize(VD->getType());
-    CharUnits Align = CGM.getContext().getDeclAlign(VD);
-    Size = Bld.CreateNUWAdd(
-        Size, llvm::ConstantInt::get(CGF.SizeTy, Align.getQuantity() - 1));
-    llvm::Value *AlignVal =
-        llvm::ConstantInt::get(CGF.SizeTy, Align.getQuantity());
-    Size = Bld.CreateUDiv(Size, AlignVal);
-    Size = Bld.CreateNUWMul(Size, AlignVal);
-    // TODO: allow the usage of shared memory to be controlled by
-    // the user, for now, default to global.
-    llvm::Value *GlobalRecordSizeArg[] = {
-        Size, CGF.Builder.getInt16(/*UseSharedMemory=*/0)};
-    llvm::Value *GlobalRecValue = CGF.EmitRuntimeCall(
-        createNVPTXRuntimeFunction(
-            OMPRTL_NVPTX__kmpc_data_sharing_coalesced_push_stack),
-        GlobalRecordSizeArg);
-    llvm::Value *GlobalRecCastAddr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-        GlobalRecValue, CGF.ConvertTypeForMem(VD->getType())->getPointerTo());
-    LValue Base = CGF.MakeAddrLValue(GlobalRecCastAddr, VD->getType(),
-                                     CGM.getContext().getDeclAlign(VD),
-                                     AlignmentSource::Decl);
-    I->getSecond().MappedParams->setVarAddr(CGF, cast<VarDecl>(VD),
-                                            Base.getAddress(CGF));
-    I->getSecond().EscapedVariableLengthDeclsAddrs.emplace_back(GlobalRecValue);
-  }
-  I->getSecond().MappedParams->apply(CGF);
-}
-
-void CGOpenMPRuntimeNVPTX::emitGenericVarsEpilog(CodeGenFunction &CGF,
-                                                 bool WithSPMDCheck) {
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic &&
-      getExecutionMode() != CGOpenMPRuntimeNVPTX::EM_SPMD)
-    return;
-
-  const auto I = FunctionGlobalizedDecls.find(CGF.CurFn);
-  if (I != FunctionGlobalizedDecls.end()) {
-    I->getSecond().MappedParams->restore(CGF);
-    if (!CGF.HaveInsertPoint())
-      return;
-    for (llvm::Value *Addr :
-         llvm::reverse(I->getSecond().EscapedVariableLengthDeclsAddrs)) {
-      CGF.EmitRuntimeCall(
-          createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_data_sharing_pop_stack),
-          Addr);
-    }
-    if (I->getSecond().GlobalRecordAddr) {
-      if (!IsInTTDRegion &&
-          (WithSPMDCheck ||
-           getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_Unknown)) {
-        CGBuilderTy &Bld = CGF.Builder;
-        llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".exit");
-        llvm::BasicBlock *NonSPMDBB = CGF.createBasicBlock(".non-spmd");
-        Bld.CreateCondBr(I->getSecond().IsInSPMDModeFlag, ExitBB, NonSPMDBB);
-        // There is no need to emit line number for unconditional branch.
-        (void)ApplyDebugLocation::CreateEmpty(CGF);
-        CGF.EmitBlock(NonSPMDBB);
-        CGF.EmitRuntimeCall(
-            createNVPTXRuntimeFunction(
-                OMPRTL_NVPTX__kmpc_data_sharing_pop_stack),
-            CGF.EmitCastToVoidPtr(I->getSecond().GlobalRecordAddr));
-        CGF.EmitBlock(ExitBB);
-      } else if (!CGM.getLangOpts().OpenMPCUDATargetParallel && IsInTTDRegion) {
-        assert(GlobalizedRecords.back().RegionCounter > 0 &&
-               "region counter must be > 0.");
-        --GlobalizedRecords.back().RegionCounter;
-        // Emit the restore function only in the target region.
-        if (GlobalizedRecords.back().RegionCounter == 0) {
-          QualType Int16Ty = CGM.getContext().getIntTypeForBitwidth(
-              /*DestWidth=*/16, /*Signed=*/0);
-          llvm::Value *IsInSharedMemory = CGF.EmitLoadOfScalar(
-              Address(GlobalizedRecords.back().UseSharedMemory,
-                      CGM.getContext().getTypeAlignInChars(Int16Ty)),
-              /*Volatile=*/false, Int16Ty, GlobalizedRecords.back().Loc);
-          llvm::Value *Args[] = {
-              llvm::ConstantInt::get(
-                  CGM.Int16Ty,
-                  getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD ? 1 : 0),
-              IsInSharedMemory};
-          CGF.EmitRuntimeCall(
-              createNVPTXRuntimeFunction(
-                  OMPRTL_NVPTX__kmpc_restore_team_static_memory),
-              Args);
-        }
-      } else {
-        CGF.EmitRuntimeCall(createNVPTXRuntimeFunction(
-                                OMPRTL_NVPTX__kmpc_data_sharing_pop_stack),
-                            I->getSecond().GlobalRecordAddr);
-      }
-    }
-  }
-}
-
-void CGOpenMPRuntimeNVPTX::emitTeamsCall(CodeGenFunction &CGF,
-                                         const OMPExecutableDirective &D,
-                                         SourceLocation Loc,
-                                         llvm::Function *OutlinedFn,
-                                         ArrayRef<llvm::Value *> CapturedVars) {
-  if (!CGF.HaveInsertPoint())
-    return;
-
-  Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
-                                                      /*Name=*/".zero.addr");
-  CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
-  llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
-  OutlinedFnArgs.push_back(emitThreadIDAddress(CGF, Loc).getPointer());
-  OutlinedFnArgs.push_back(ZeroAddr.getPointer());
-  OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end());
-  emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, OutlinedFnArgs);
-}
-
-void CGOpenMPRuntimeNVPTX::emitParallelCall(
-    CodeGenFunction &CGF, SourceLocation Loc, llvm::Function *OutlinedFn,
-    ArrayRef<llvm::Value *> CapturedVars, const Expr *IfCond) {
-  if (!CGF.HaveInsertPoint())
-    return;
-
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
-    emitSPMDParallelCall(CGF, Loc, OutlinedFn, CapturedVars, IfCond);
-  else
-    emitNonSPMDParallelCall(CGF, Loc, OutlinedFn, CapturedVars, IfCond);
-}
-
-void CGOpenMPRuntimeNVPTX::emitNonSPMDParallelCall(
-    CodeGenFunction &CGF, SourceLocation Loc, llvm::Value *OutlinedFn,
-    ArrayRef<llvm::Value *> CapturedVars, const Expr *IfCond) {
-  llvm::Function *Fn = cast<llvm::Function>(OutlinedFn);
-
-  // Force inline this outlined function at its call site.
-  Fn->setLinkage(llvm::GlobalValue::InternalLinkage);
-
-  Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
-                                                      /*Name=*/".zero.addr");
-  CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
-  // ThreadId for serialized parallels is 0.
-  Address ThreadIDAddr = ZeroAddr;
-  auto &&CodeGen = [this, Fn, CapturedVars, Loc, &ThreadIDAddr](
-                       CodeGenFunction &CGF, PrePostActionTy &Action) {
-    Action.Enter(CGF);
-
-    Address ZeroAddr =
-        CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
-                                         /*Name=*/".bound.zero.addr");
-    CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
-    llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
-    OutlinedFnArgs.push_back(ThreadIDAddr.getPointer());
-    OutlinedFnArgs.push_back(ZeroAddr.getPointer());
-    OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end());
-    emitOutlinedFunctionCall(CGF, Loc, Fn, OutlinedFnArgs);
-  };
-  auto &&SeqGen = [this, &CodeGen, Loc](CodeGenFunction &CGF,
-                                        PrePostActionTy &) {
-
-    RegionCodeGenTy RCG(CodeGen);
-    llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
-    llvm::Value *ThreadID = getThreadID(CGF, Loc);
-    llvm::Value *Args[] = {RTLoc, ThreadID};
-
-    NVPTXActionTy Action(
-        createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_serialized_parallel),
-        Args,
-        createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_end_serialized_parallel),
-        Args);
-    RCG.setAction(Action);
-    RCG(CGF);
-  };
-
-  auto &&L0ParallelGen = [this, CapturedVars, Fn](CodeGenFunction &CGF,
-                                                  PrePostActionTy &Action) {
-    CGBuilderTy &Bld = CGF.Builder;
-    llvm::Function *WFn = WrapperFunctionsMap[Fn];
-    assert(WFn && "Wrapper function does not exist!");
-    llvm::Value *ID = Bld.CreateBitOrPointerCast(WFn, CGM.Int8PtrTy);
-
-    // Prepare for parallel region. Indicate the outlined function.
-    llvm::Value *Args[] = {ID};
-    CGF.EmitRuntimeCall(
-        createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_kernel_prepare_parallel),
-        Args);
-
-    // Create a private scope that will globalize the arguments
-    // passed from the outside of the target region.
-    CodeGenFunction::OMPPrivateScope PrivateArgScope(CGF);
-
-    // There's something to share.
-    if (!CapturedVars.empty()) {
-      // Prepare for parallel region. Indicate the outlined function.
-      Address SharedArgs =
-          CGF.CreateDefaultAlignTempAlloca(CGF.VoidPtrPtrTy, "shared_arg_refs");
-      llvm::Value *SharedArgsPtr = SharedArgs.getPointer();
-
-      llvm::Value *DataSharingArgs[] = {
-          SharedArgsPtr,
-          llvm::ConstantInt::get(CGM.SizeTy, CapturedVars.size())};
-      CGF.EmitRuntimeCall(createNVPTXRuntimeFunction(
-                              OMPRTL_NVPTX__kmpc_begin_sharing_variables),
-                          DataSharingArgs);
-
-      // Store variable address in a list of references to pass to workers.
-      unsigned Idx = 0;
-      ASTContext &Ctx = CGF.getContext();
-      Address SharedArgListAddress = CGF.EmitLoadOfPointer(
-          SharedArgs, Ctx.getPointerType(Ctx.getPointerType(Ctx.VoidPtrTy))
-                          .castAs<PointerType>());
-      for (llvm::Value *V : CapturedVars) {
-        Address Dst = Bld.CreateConstInBoundsGEP(SharedArgListAddress, Idx);
-        llvm::Value *PtrV;
-        if (V->getType()->isIntegerTy())
-          PtrV = Bld.CreateIntToPtr(V, CGF.VoidPtrTy);
-        else
-          PtrV = Bld.CreatePointerBitCastOrAddrSpaceCast(V, CGF.VoidPtrTy);
-        CGF.EmitStoreOfScalar(PtrV, Dst, /*Volatile=*/false,
-                              Ctx.getPointerType(Ctx.VoidPtrTy));
-        ++Idx;
-      }
-    }
-
-    // Activate workers. This barrier is used by the master to signal
-    // work for the workers.
-    syncCTAThreads(CGF);
-
-    // OpenMP [2.5, Parallel Construct, p.49]
-    // There is an implied barrier at the end of a parallel region. After the
-    // end of a parallel region, only the master thread of the team resumes
-    // execution of the enclosing task region.
-    //
-    // The master waits at this barrier until all workers are done.
-    syncCTAThreads(CGF);
-
-    if (!CapturedVars.empty())
-      CGF.EmitRuntimeCall(
-          createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_end_sharing_variables));
-
-    // Remember for post-processing in worker loop.
-    Work.emplace_back(WFn);
-  };
-
-  auto &&LNParallelGen = [this, Loc, &SeqGen, &L0ParallelGen](
-                             CodeGenFunction &CGF, PrePostActionTy &Action) {
-    if (IsInParallelRegion) {
-      SeqGen(CGF, Action);
-    } else if (IsInTargetMasterThreadRegion) {
-      L0ParallelGen(CGF, Action);
-    } else {
-      // Check for master and then parallelism:
-      // if (__kmpc_is_spmd_exec_mode() || __kmpc_parallel_level(loc, gtid)) {
-      //   Serialized execution.
-      // } else {
-      //   Worker call.
-      // }
-      CGBuilderTy &Bld = CGF.Builder;
-      llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".exit");
-      llvm::BasicBlock *SeqBB = CGF.createBasicBlock(".sequential");
-      llvm::BasicBlock *ParallelCheckBB = CGF.createBasicBlock(".parcheck");
-      llvm::BasicBlock *MasterBB = CGF.createBasicBlock(".master");
-      llvm::Value *IsSPMD = Bld.CreateIsNotNull(CGF.EmitNounwindRuntimeCall(
-          createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_is_spmd_exec_mode)));
-      Bld.CreateCondBr(IsSPMD, SeqBB, ParallelCheckBB);
-      // There is no need to emit line number for unconditional branch.
-      (void)ApplyDebugLocation::CreateEmpty(CGF);
-      CGF.EmitBlock(ParallelCheckBB);
-      llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
-      llvm::Value *ThreadID = getThreadID(CGF, Loc);
-      llvm::Value *PL = CGF.EmitRuntimeCall(
-          createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_parallel_level),
-          {RTLoc, ThreadID});
-      llvm::Value *Res = Bld.CreateIsNotNull(PL);
-      Bld.CreateCondBr(Res, SeqBB, MasterBB);
-      CGF.EmitBlock(SeqBB);
-      SeqGen(CGF, Action);
-      CGF.EmitBranch(ExitBB);
-      // There is no need to emit line number for unconditional branch.
-      (void)ApplyDebugLocation::CreateEmpty(CGF);
-      CGF.EmitBlock(MasterBB);
-      L0ParallelGen(CGF, Action);
-      CGF.EmitBranch(ExitBB);
-      // There is no need to emit line number for unconditional branch.
-      (void)ApplyDebugLocation::CreateEmpty(CGF);
-      // Emit the continuation block for code after the if.
-      CGF.EmitBlock(ExitBB, /*IsFinished=*/true);
-    }
-  };
-
-  if (IfCond) {
-    emitIfClause(CGF, IfCond, LNParallelGen, SeqGen);
-  } else {
-    CodeGenFunction::RunCleanupsScope Scope(CGF);
-    RegionCodeGenTy ThenRCG(LNParallelGen);
-    ThenRCG(CGF);
-  }
-}
-
-void CGOpenMPRuntimeNVPTX::emitSPMDParallelCall(
-    CodeGenFunction &CGF, SourceLocation Loc, llvm::Function *OutlinedFn,
-    ArrayRef<llvm::Value *> CapturedVars, const Expr *IfCond) {
-  // Just call the outlined function to execute the parallel region.
-  // OutlinedFn(&GTid, &zero, CapturedStruct);
-  //
-  llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
-
-  Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
-                                                      /*Name=*/".zero.addr");
-  CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
-  // ThreadId for serialized parallels is 0.
-  Address ThreadIDAddr = ZeroAddr;
-  auto &&CodeGen = [this, OutlinedFn, CapturedVars, Loc, &ThreadIDAddr](
-                       CodeGenFunction &CGF, PrePostActionTy &Action) {
-    Action.Enter(CGF);
-
-    Address ZeroAddr =
-        CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
-                                         /*Name=*/".bound.zero.addr");
-    CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
-    llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs;
-    OutlinedFnArgs.push_back(ThreadIDAddr.getPointer());
-    OutlinedFnArgs.push_back(ZeroAddr.getPointer());
-    OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end());
-    emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, OutlinedFnArgs);
-  };
-  auto &&SeqGen = [this, &CodeGen, Loc](CodeGenFunction &CGF,
-                                        PrePostActionTy &) {
-
-    RegionCodeGenTy RCG(CodeGen);
-    llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
-    llvm::Value *ThreadID = getThreadID(CGF, Loc);
-    llvm::Value *Args[] = {RTLoc, ThreadID};
-
-    NVPTXActionTy Action(
-        createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_serialized_parallel),
-        Args,
-        createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_end_serialized_parallel),
-        Args);
-    RCG.setAction(Action);
-    RCG(CGF);
-  };
-
-  if (IsInTargetMasterThreadRegion) {
-    // In the worker need to use the real thread id.
-    ThreadIDAddr = emitThreadIDAddress(CGF, Loc);
-    RegionCodeGenTy RCG(CodeGen);
-    RCG(CGF);
-  } else {
-    // If we are not in the target region, it is definitely L2 parallelism or
-    // more, because for SPMD mode we always has L1 parallel level, sowe don't
-    // need to check for orphaned directives.
-    RegionCodeGenTy RCG(SeqGen);
-    RCG(CGF);
-  }
-}
-
-void CGOpenMPRuntimeNVPTX::syncCTAThreads(CodeGenFunction &CGF) {
-  // Always emit simple barriers!
-  if (!CGF.HaveInsertPoint())
-    return;
-  // Build call __kmpc_barrier_simple_spmd(nullptr, 0);
-  // This function does not use parameters, so we can emit just default values.
-  llvm::Value *Args[] = {
-      llvm::ConstantPointerNull::get(
-          cast<llvm::PointerType>(getIdentTyPointerTy())),
-      llvm::ConstantInt::get(CGF.Int32Ty, /*V=*/0, /*isSigned=*/true)};
-  llvm::CallInst *Call = CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL__kmpc_barrier_simple_spmd), Args);
-  Call->setConvergent();
-}
-
-void CGOpenMPRuntimeNVPTX::emitBarrierCall(CodeGenFunction &CGF,
-                                           SourceLocation Loc,
-                                           OpenMPDirectiveKind Kind, bool,
-                                           bool) {
-  // Always emit simple barriers!
-  if (!CGF.HaveInsertPoint())
-    return;
-  // Build call __kmpc_cancel_barrier(loc, thread_id);
-  unsigned Flags = getDefaultFlagsForBarriers(Kind);
-  llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc, Flags),
-                         getThreadID(CGF, Loc)};
-  llvm::CallInst *Call = CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL__kmpc_barrier), Args);
-  Call->setConvergent();
-}
-
-void CGOpenMPRuntimeNVPTX::emitCriticalRegion(
-    CodeGenFunction &CGF, StringRef CriticalName,
-    const RegionCodeGenTy &CriticalOpGen, SourceLocation Loc,
-    const Expr *Hint) {
-  llvm::BasicBlock *LoopBB = CGF.createBasicBlock("omp.critical.loop");
-  llvm::BasicBlock *TestBB = CGF.createBasicBlock("omp.critical.test");
-  llvm::BasicBlock *SyncBB = CGF.createBasicBlock("omp.critical.sync");
-  llvm::BasicBlock *BodyBB = CGF.createBasicBlock("omp.critical.body");
-  llvm::BasicBlock *ExitBB = CGF.createBasicBlock("omp.critical.exit");
-
-  // Get the mask of active threads in the warp.
-  llvm::Value *Mask = CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_warp_active_thread_mask));
-  // Fetch team-local id of the thread.
-  llvm::Value *ThreadID = getNVPTXThreadID(CGF);
-
-  // Get the width of the team.
-  llvm::Value *TeamWidth = getNVPTXNumThreads(CGF);
-
-  // Initialize the counter variable for the loop.
-  QualType Int32Ty =
-      CGF.getContext().getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/0);
-  Address Counter = CGF.CreateMemTemp(Int32Ty, "critical_counter");
-  LValue CounterLVal = CGF.MakeAddrLValue(Counter, Int32Ty);
-  CGF.EmitStoreOfScalar(llvm::Constant::getNullValue(CGM.Int32Ty), CounterLVal,
-                        /*isInit=*/true);
-
-  // Block checks if loop counter exceeds upper bound.
-  CGF.EmitBlock(LoopBB);
-  llvm::Value *CounterVal = CGF.EmitLoadOfScalar(CounterLVal, Loc);
-  llvm::Value *CmpLoopBound = CGF.Builder.CreateICmpSLT(CounterVal, TeamWidth);
-  CGF.Builder.CreateCondBr(CmpLoopBound, TestBB, ExitBB);
-
-  // Block tests which single thread should execute region, and which threads
-  // should go straight to synchronisation point.
-  CGF.EmitBlock(TestBB);
-  CounterVal = CGF.EmitLoadOfScalar(CounterLVal, Loc);
-  llvm::Value *CmpThreadToCounter =
-      CGF.Builder.CreateICmpEQ(ThreadID, CounterVal);
-  CGF.Builder.CreateCondBr(CmpThreadToCounter, BodyBB, SyncBB);
-
-  // Block emits the body of the critical region.
-  CGF.EmitBlock(BodyBB);
-
-  // Output the critical statement.
-  CGOpenMPRuntime::emitCriticalRegion(CGF, CriticalName, CriticalOpGen, Loc,
-                                      Hint);
-
-  // After the body surrounded by the critical region, the single executing
-  // thread will jump to the synchronisation point.
-  // Block waits for all threads in current team to finish then increments the
-  // counter variable and returns to the loop.
-  CGF.EmitBlock(SyncBB);
-  // Reconverge active threads in the warp.
-  (void)CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_syncwarp), Mask);
-
-  llvm::Value *IncCounterVal =
-      CGF.Builder.CreateNSWAdd(CounterVal, CGF.Builder.getInt32(1));
-  CGF.EmitStoreOfScalar(IncCounterVal, CounterLVal);
-  CGF.EmitBranch(LoopBB);
-
-  // Block that is reached when  all threads in the team complete the region.
-  CGF.EmitBlock(ExitBB, /*IsFinished=*/true);
-}
-
-/// Cast value to the specified type.
-static llvm::Value *castValueToType(CodeGenFunction &CGF, llvm::Value *Val,
-                                    QualType ValTy, QualType CastTy,
-                                    SourceLocation Loc) {
-  assert(!CGF.getContext().getTypeSizeInChars(CastTy).isZero() &&
-         "Cast type must sized.");
-  assert(!CGF.getContext().getTypeSizeInChars(ValTy).isZero() &&
-         "Val type must sized.");
-  llvm::Type *LLVMCastTy = CGF.ConvertTypeForMem(CastTy);
-  if (ValTy == CastTy)
-    return Val;
-  if (CGF.getContext().getTypeSizeInChars(ValTy) ==
-      CGF.getContext().getTypeSizeInChars(CastTy))
-    return CGF.Builder.CreateBitCast(Val, LLVMCastTy);
-  if (CastTy->isIntegerType() && ValTy->isIntegerType())
-    return CGF.Builder.CreateIntCast(Val, LLVMCastTy,
-                                     CastTy->hasSignedIntegerRepresentation());
-  Address CastItem = CGF.CreateMemTemp(CastTy);
-  Address ValCastItem = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-      CastItem, Val->getType()->getPointerTo(CastItem.getAddressSpace()));
-  CGF.EmitStoreOfScalar(Val, ValCastItem, /*Volatile=*/false, ValTy);
-  return CGF.EmitLoadOfScalar(CastItem, /*Volatile=*/false, CastTy, Loc);
-}
-
-/// This function creates calls to one of two shuffle functions to copy
-/// variables between lanes in a warp.
-static llvm::Value *createRuntimeShuffleFunction(CodeGenFunction &CGF,
-                                                 llvm::Value *Elem,
-                                                 QualType ElemType,
-                                                 llvm::Value *Offset,
-                                                 SourceLocation Loc) {
-  CodeGenModule &CGM = CGF.CGM;
-  CGBuilderTy &Bld = CGF.Builder;
-  CGOpenMPRuntimeNVPTX &RT =
-      *(static_cast<CGOpenMPRuntimeNVPTX *>(&CGM.getOpenMPRuntime()));
-
-  CharUnits Size = CGF.getContext().getTypeSizeInChars(ElemType);
-  assert(Size.getQuantity() <= 8 &&
-         "Unsupported bitwidth in shuffle instruction.");
-
-  OpenMPRTLFunctionNVPTX ShuffleFn = Size.getQuantity() <= 4
-                                         ? OMPRTL_NVPTX__kmpc_shuffle_int32
-                                         : OMPRTL_NVPTX__kmpc_shuffle_int64;
-
-  // Cast all types to 32- or 64-bit values before calling shuffle routines.
-  QualType CastTy = CGF.getContext().getIntTypeForBitwidth(
-      Size.getQuantity() <= 4 ? 32 : 64, /*Signed=*/1);
-  llvm::Value *ElemCast = castValueToType(CGF, Elem, ElemType, CastTy, Loc);
-  llvm::Value *WarpSize =
-      Bld.CreateIntCast(getNVPTXWarpSize(CGF), CGM.Int16Ty, /*isSigned=*/true);
-
-  llvm::Value *ShuffledVal = CGF.EmitRuntimeCall(
-      RT.createNVPTXRuntimeFunction(ShuffleFn), {ElemCast, Offset, WarpSize});
-
-  return castValueToType(CGF, ShuffledVal, CastTy, ElemType, Loc);
-}
-
-static void shuffleAndStore(CodeGenFunction &CGF, Address SrcAddr,
-                            Address DestAddr, QualType ElemType,
-                            llvm::Value *Offset, SourceLocation Loc) {
-  CGBuilderTy &Bld = CGF.Builder;
-
-  CharUnits Size = CGF.getContext().getTypeSizeInChars(ElemType);
-  // Create the loop over the big sized data.
-  // ptr = (void*)Elem;
-  // ptrEnd = (void*) Elem + 1;
-  // Step = 8;
-  // while (ptr + Step < ptrEnd)
-  //   shuffle((int64_t)*ptr);
-  // Step = 4;
-  // while (ptr + Step < ptrEnd)
-  //   shuffle((int32_t)*ptr);
-  // ...
-  Address ElemPtr = DestAddr;
-  Address Ptr = SrcAddr;
-  Address PtrEnd = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      Bld.CreateConstGEP(SrcAddr, 1), CGF.VoidPtrTy);
-  for (int IntSize = 8; IntSize >= 1; IntSize /= 2) {
-    if (Size < CharUnits::fromQuantity(IntSize))
-      continue;
-    QualType IntType = CGF.getContext().getIntTypeForBitwidth(
-        CGF.getContext().toBits(CharUnits::fromQuantity(IntSize)),
-        /*Signed=*/1);
-    llvm::Type *IntTy = CGF.ConvertTypeForMem(IntType);
-    Ptr = Bld.CreatePointerBitCastOrAddrSpaceCast(Ptr, IntTy->getPointerTo());
-    ElemPtr =
-        Bld.CreatePointerBitCastOrAddrSpaceCast(ElemPtr, IntTy->getPointerTo());
-    if (Size.getQuantity() / IntSize > 1) {
-      llvm::BasicBlock *PreCondBB = CGF.createBasicBlock(".shuffle.pre_cond");
-      llvm::BasicBlock *ThenBB = CGF.createBasicBlock(".shuffle.then");
-      llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".shuffle.exit");
-      llvm::BasicBlock *CurrentBB = Bld.GetInsertBlock();
-      CGF.EmitBlock(PreCondBB);
-      llvm::PHINode *PhiSrc =
-          Bld.CreatePHI(Ptr.getType(), /*NumReservedValues=*/2);
-      PhiSrc->addIncoming(Ptr.getPointer(), CurrentBB);
-      llvm::PHINode *PhiDest =
-          Bld.CreatePHI(ElemPtr.getType(), /*NumReservedValues=*/2);
-      PhiDest->addIncoming(ElemPtr.getPointer(), CurrentBB);
-      Ptr = Address(PhiSrc, Ptr.getAlignment());
-      ElemPtr = Address(PhiDest, ElemPtr.getAlignment());
-      llvm::Value *PtrDiff = Bld.CreatePtrDiff(
-          PtrEnd.getPointer(), Bld.CreatePointerBitCastOrAddrSpaceCast(
-                                   Ptr.getPointer(), CGF.VoidPtrTy));
-      Bld.CreateCondBr(Bld.CreateICmpSGT(PtrDiff, Bld.getInt64(IntSize - 1)),
-                       ThenBB, ExitBB);
-      CGF.EmitBlock(ThenBB);
-      llvm::Value *Res = createRuntimeShuffleFunction(
-          CGF, CGF.EmitLoadOfScalar(Ptr, /*Volatile=*/false, IntType, Loc),
-          IntType, Offset, Loc);
-      CGF.EmitStoreOfScalar(Res, ElemPtr, /*Volatile=*/false, IntType);
-      Address LocalPtr = Bld.CreateConstGEP(Ptr, 1);
-      Address LocalElemPtr = Bld.CreateConstGEP(ElemPtr, 1);
-      PhiSrc->addIncoming(LocalPtr.getPointer(), ThenBB);
-      PhiDest->addIncoming(LocalElemPtr.getPointer(), ThenBB);
-      CGF.EmitBranch(PreCondBB);
-      CGF.EmitBlock(ExitBB);
-    } else {
-      llvm::Value *Res = createRuntimeShuffleFunction(
-          CGF, CGF.EmitLoadOfScalar(Ptr, /*Volatile=*/false, IntType, Loc),
-          IntType, Offset, Loc);
-      CGF.EmitStoreOfScalar(Res, ElemPtr, /*Volatile=*/false, IntType);
-      Ptr = Bld.CreateConstGEP(Ptr, 1);
-      ElemPtr = Bld.CreateConstGEP(ElemPtr, 1);
-    }
-    Size = Size % IntSize;
-  }
-}
-
-namespace {
-enum CopyAction : unsigned {
-  // RemoteLaneToThread: Copy over a Reduce list from a remote lane in
-  // the warp using shuffle instructions.
-  RemoteLaneToThread,
-  // ThreadCopy: Make a copy of a Reduce list on the thread's stack.
-  ThreadCopy,
-  // ThreadToScratchpad: Copy a team-reduced array to the scratchpad.
-  ThreadToScratchpad,
-  // ScratchpadToThread: Copy from a scratchpad array in global memory
-  // containing team-reduced data to a thread's stack.
-  ScratchpadToThread,
-};
-} // namespace
-
-struct CopyOptionsTy {
-  llvm::Value *RemoteLaneOffset;
-  llvm::Value *ScratchpadIndex;
-  llvm::Value *ScratchpadWidth;
-};
-
-/// Emit instructions to copy a Reduce list, which contains partially
-/// aggregated values, in the specified direction.
-static void emitReductionListCopy(
-    CopyAction Action, CodeGenFunction &CGF, QualType ReductionArrayTy,
-    ArrayRef<const Expr *> Privates, Address SrcBase, Address DestBase,
-    CopyOptionsTy CopyOptions = {nullptr, nullptr, nullptr}) {
-
-  CodeGenModule &CGM = CGF.CGM;
-  ASTContext &C = CGM.getContext();
-  CGBuilderTy &Bld = CGF.Builder;
-
-  llvm::Value *RemoteLaneOffset = CopyOptions.RemoteLaneOffset;
-  llvm::Value *ScratchpadIndex = CopyOptions.ScratchpadIndex;
-  llvm::Value *ScratchpadWidth = CopyOptions.ScratchpadWidth;
-
-  // Iterates, element-by-element, through the source Reduce list and
-  // make a copy.
-  unsigned Idx = 0;
-  unsigned Size = Privates.size();
-  for (const Expr *Private : Privates) {
-    Address SrcElementAddr = Address::invalid();
-    Address DestElementAddr = Address::invalid();
-    Address DestElementPtrAddr = Address::invalid();
-    // Should we shuffle in an element from a remote lane?
-    bool ShuffleInElement = false;
-    // Set to true to update the pointer in the dest Reduce list to a
-    // newly created element.
-    bool UpdateDestListPtr = false;
-    // Increment the src or dest pointer to the scratchpad, for each
-    // new element.
-    bool IncrScratchpadSrc = false;
-    bool IncrScratchpadDest = false;
-
-    switch (Action) {
-    case RemoteLaneToThread: {
-      // Step 1.1: Get the address for the src element in the Reduce list.
-      Address SrcElementPtrAddr = Bld.CreateConstArrayGEP(SrcBase, Idx);
-      SrcElementAddr = CGF.EmitLoadOfPointer(
-          SrcElementPtrAddr,
-          C.getPointerType(Private->getType())->castAs<PointerType>());
-
-      // Step 1.2: Create a temporary to store the element in the destination
-      // Reduce list.
-      DestElementPtrAddr = Bld.CreateConstArrayGEP(DestBase, Idx);
-      DestElementAddr =
-          CGF.CreateMemTemp(Private->getType(), ".omp.reduction.element");
-      ShuffleInElement = true;
-      UpdateDestListPtr = true;
-      break;
-    }
-    case ThreadCopy: {
-      // Step 1.1: Get the address for the src element in the Reduce list.
-      Address SrcElementPtrAddr = Bld.CreateConstArrayGEP(SrcBase, Idx);
-      SrcElementAddr = CGF.EmitLoadOfPointer(
-          SrcElementPtrAddr,
-          C.getPointerType(Private->getType())->castAs<PointerType>());
-
-      // Step 1.2: Get the address for dest element.  The destination
-      // element has already been created on the thread's stack.
-      DestElementPtrAddr = Bld.CreateConstArrayGEP(DestBase, Idx);
-      DestElementAddr = CGF.EmitLoadOfPointer(
-          DestElementPtrAddr,
-          C.getPointerType(Private->getType())->castAs<PointerType>());
-      break;
-    }
-    case ThreadToScratchpad: {
-      // Step 1.1: Get the address for the src element in the Reduce list.
-      Address SrcElementPtrAddr = Bld.CreateConstArrayGEP(SrcBase, Idx);
-      SrcElementAddr = CGF.EmitLoadOfPointer(
-          SrcElementPtrAddr,
-          C.getPointerType(Private->getType())->castAs<PointerType>());
-
-      // Step 1.2: Get the address for dest element:
-      // address = base + index * ElementSizeInChars.
-      llvm::Value *ElementSizeInChars = CGF.getTypeSize(Private->getType());
-      llvm::Value *CurrentOffset =
-          Bld.CreateNUWMul(ElementSizeInChars, ScratchpadIndex);
-      llvm::Value *ScratchPadElemAbsolutePtrVal =
-          Bld.CreateNUWAdd(DestBase.getPointer(), CurrentOffset);
-      ScratchPadElemAbsolutePtrVal =
-          Bld.CreateIntToPtr(ScratchPadElemAbsolutePtrVal, CGF.VoidPtrTy);
-      DestElementAddr = Address(ScratchPadElemAbsolutePtrVal,
-                                C.getTypeAlignInChars(Private->getType()));
-      IncrScratchpadDest = true;
-      break;
-    }
-    case ScratchpadToThread: {
-      // Step 1.1: Get the address for the src element in the scratchpad.
-      // address = base + index * ElementSizeInChars.
-      llvm::Value *ElementSizeInChars = CGF.getTypeSize(Private->getType());
-      llvm::Value *CurrentOffset =
-          Bld.CreateNUWMul(ElementSizeInChars, ScratchpadIndex);
-      llvm::Value *ScratchPadElemAbsolutePtrVal =
-          Bld.CreateNUWAdd(SrcBase.getPointer(), CurrentOffset);
-      ScratchPadElemAbsolutePtrVal =
-          Bld.CreateIntToPtr(ScratchPadElemAbsolutePtrVal, CGF.VoidPtrTy);
-      SrcElementAddr = Address(ScratchPadElemAbsolutePtrVal,
-                               C.getTypeAlignInChars(Private->getType()));
-      IncrScratchpadSrc = true;
-
-      // Step 1.2: Create a temporary to store the element in the destination
-      // Reduce list.
-      DestElementPtrAddr = Bld.CreateConstArrayGEP(DestBase, Idx);
-      DestElementAddr =
-          CGF.CreateMemTemp(Private->getType(), ".omp.reduction.element");
-      UpdateDestListPtr = true;
-      break;
-    }
-    }
-
-    // Regardless of src and dest of copy, we emit the load of src
-    // element as this is required in all directions
-    SrcElementAddr = Bld.CreateElementBitCast(
-        SrcElementAddr, CGF.ConvertTypeForMem(Private->getType()));
-    DestElementAddr = Bld.CreateElementBitCast(DestElementAddr,
-                                               SrcElementAddr.getElementType());
-
-    // Now that all active lanes have read the element in the
-    // Reduce list, shuffle over the value from the remote lane.
-    if (ShuffleInElement) {
-      shuffleAndStore(CGF, SrcElementAddr, DestElementAddr, Private->getType(),
-                      RemoteLaneOffset, Private->getExprLoc());
-    } else {
-      switch (CGF.getEvaluationKind(Private->getType())) {
-      case TEK_Scalar: {
-        llvm::Value *Elem =
-            CGF.EmitLoadOfScalar(SrcElementAddr, /*Volatile=*/false,
-                                 Private->getType(), Private->getExprLoc());
-        // Store the source element value to the dest element address.
-        CGF.EmitStoreOfScalar(Elem, DestElementAddr, /*Volatile=*/false,
-                              Private->getType());
-        break;
-      }
-      case TEK_Complex: {
-        CodeGenFunction::ComplexPairTy Elem = CGF.EmitLoadOfComplex(
-            CGF.MakeAddrLValue(SrcElementAddr, Private->getType()),
-            Private->getExprLoc());
-        CGF.EmitStoreOfComplex(
-            Elem, CGF.MakeAddrLValue(DestElementAddr, Private->getType()),
-            /*isInit=*/false);
-        break;
-      }
-      case TEK_Aggregate:
-        CGF.EmitAggregateCopy(
-            CGF.MakeAddrLValue(DestElementAddr, Private->getType()),
-            CGF.MakeAddrLValue(SrcElementAddr, Private->getType()),
-            Private->getType(), AggValueSlot::DoesNotOverlap);
-        break;
-      }
-    }
-
-    // Step 3.1: Modify reference in dest Reduce list as needed.
-    // Modifying the reference in Reduce list to point to the newly
-    // created element.  The element is live in the current function
-    // scope and that of functions it invokes (i.e., reduce_function).
-    // RemoteReduceData[i] = (void*)&RemoteElem
-    if (UpdateDestListPtr) {
-      CGF.EmitStoreOfScalar(Bld.CreatePointerBitCastOrAddrSpaceCast(
-                                DestElementAddr.getPointer(), CGF.VoidPtrTy),
-                            DestElementPtrAddr, /*Volatile=*/false,
-                            C.VoidPtrTy);
-    }
-
-    // Step 4.1: Increment SrcBase/DestBase so that it points to the starting
-    // address of the next element in scratchpad memory, unless we're currently
-    // processing the last one.  Memory alignment is also taken care of here.
-    if ((IncrScratchpadDest || IncrScratchpadSrc) && (Idx + 1 < Size)) {
-      llvm::Value *ScratchpadBasePtr =
-          IncrScratchpadDest ? DestBase.getPointer() : SrcBase.getPointer();
-      llvm::Value *ElementSizeInChars = CGF.getTypeSize(Private->getType());
-      ScratchpadBasePtr = Bld.CreateNUWAdd(
-          ScratchpadBasePtr,
-          Bld.CreateNUWMul(ScratchpadWidth, ElementSizeInChars));
-
-      // Take care of global memory alignment for performance
-      ScratchpadBasePtr = Bld.CreateNUWSub(
-          ScratchpadBasePtr, llvm::ConstantInt::get(CGM.SizeTy, 1));
-      ScratchpadBasePtr = Bld.CreateUDiv(
-          ScratchpadBasePtr,
-          llvm::ConstantInt::get(CGM.SizeTy, GlobalMemoryAlignment));
-      ScratchpadBasePtr = Bld.CreateNUWAdd(
-          ScratchpadBasePtr, llvm::ConstantInt::get(CGM.SizeTy, 1));
-      ScratchpadBasePtr = Bld.CreateNUWMul(
-          ScratchpadBasePtr,
-          llvm::ConstantInt::get(CGM.SizeTy, GlobalMemoryAlignment));
-
-      if (IncrScratchpadDest)
-        DestBase = Address(ScratchpadBasePtr, CGF.getPointerAlign());
-      else /* IncrScratchpadSrc = true */
-        SrcBase = Address(ScratchpadBasePtr, CGF.getPointerAlign());
-    }
-
-    ++Idx;
-  }
-}
-
-/// This function emits a helper that gathers Reduce lists from the first
-/// lane of every active warp to lanes in the first warp.
-///
-/// void inter_warp_copy_func(void* reduce_data, num_warps)
-///   shared smem[warp_size];
-///   For all data entries D in reduce_data:
-///     sync
-///     If (I am the first lane in each warp)
-///       Copy my local D to smem[warp_id]
-///     sync
-///     if (I am the first warp)
-///       Copy smem[thread_id] to my local D
-static llvm::Value *emitInterWarpCopyFunction(CodeGenModule &CGM,
-                                              ArrayRef<const Expr *> Privates,
-                                              QualType ReductionArrayTy,
-                                              SourceLocation Loc) {
-  ASTContext &C = CGM.getContext();
-  llvm::Module &M = CGM.getModule();
-
-  // ReduceList: thread local Reduce list.
-  // At the stage of the computation when this function is called, partially
-  // aggregated values reside in the first lane of every active warp.
-  ImplicitParamDecl ReduceListArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                  C.VoidPtrTy, ImplicitParamDecl::Other);
-  // NumWarps: number of warps active in the parallel region.  This could
-  // be smaller than 32 (max warps in a CTA) for partial block reduction.
-  ImplicitParamDecl NumWarpsArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                C.getIntTypeForBitwidth(32, /* Signed */ true),
-                                ImplicitParamDecl::Other);
-  FunctionArgList Args;
-  Args.push_back(&ReduceListArg);
-  Args.push_back(&NumWarpsArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args);
-  auto *Fn = llvm::Function::Create(CGM.getTypes().GetFunctionType(CGFI),
-                                    llvm::GlobalValue::InternalLinkage,
-                                    "_omp_reduction_inter_warp_copy_func", &M);
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setDoesNotRecurse();
-  CodeGenFunction CGF(CGM);
-  CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc);
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  // This array is used as a medium to transfer, one reduce element at a time,
-  // the data from the first lane of every warp to lanes in the first warp
-  // in order to perform the final step of a reduction in a parallel region
-  // (reduction across warps).  The array is placed in NVPTX __shared__ memory
-  // for reduced latency, as well as to have a distinct copy for concurrently
-  // executing target regions.  The array is declared with common linkage so
-  // as to be shared across compilation units.
-  StringRef TransferMediumName =
-      "__openmp_nvptx_data_transfer_temporary_storage";
-  llvm::GlobalVariable *TransferMedium =
-      M.getGlobalVariable(TransferMediumName);
-  if (!TransferMedium) {
-    auto *Ty = llvm::ArrayType::get(CGM.Int32Ty, WarpSize);
-    unsigned SharedAddressSpace = C.getTargetAddressSpace(LangAS::cuda_shared);
-    TransferMedium = new llvm::GlobalVariable(
-        M, Ty, /*isConstant=*/false, llvm::GlobalVariable::CommonLinkage,
-        llvm::Constant::getNullValue(Ty), TransferMediumName,
-        /*InsertBefore=*/nullptr, llvm::GlobalVariable::NotThreadLocal,
-        SharedAddressSpace);
-    CGM.addCompilerUsedGlobal(TransferMedium);
-  }
-
-  // Get the CUDA thread id of the current OpenMP thread on the GPU.
-  llvm::Value *ThreadID = getNVPTXThreadID(CGF);
-  // nvptx_lane_id = nvptx_id % warpsize
-  llvm::Value *LaneID = getNVPTXLaneID(CGF);
-  // nvptx_warp_id = nvptx_id / warpsize
-  llvm::Value *WarpID = getNVPTXWarpID(CGF);
-
-  Address AddrReduceListArg = CGF.GetAddrOfLocalVar(&ReduceListArg);
-  Address LocalReduceList(
-      Bld.CreatePointerBitCastOrAddrSpaceCast(
-          CGF.EmitLoadOfScalar(AddrReduceListArg, /*Volatile=*/false,
-                               C.VoidPtrTy, Loc),
-          CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo()),
-      CGF.getPointerAlign());
-
-  unsigned Idx = 0;
-  for (const Expr *Private : Privates) {
-    //
-    // Warp master copies reduce element to transfer medium in __shared__
-    // memory.
-    //
-    unsigned RealTySize =
-        C.getTypeSizeInChars(Private->getType())
-            .alignTo(C.getTypeAlignInChars(Private->getType()))
-            .getQuantity();
-    for (unsigned TySize = 4; TySize > 0 && RealTySize > 0; TySize /=2) {
-      unsigned NumIters = RealTySize / TySize;
-      if (NumIters == 0)
-        continue;
-      QualType CType = C.getIntTypeForBitwidth(
-          C.toBits(CharUnits::fromQuantity(TySize)), /*Signed=*/1);
-      llvm::Type *CopyType = CGF.ConvertTypeForMem(CType);
-      CharUnits Align = CharUnits::fromQuantity(TySize);
-      llvm::Value *Cnt = nullptr;
-      Address CntAddr = Address::invalid();
-      llvm::BasicBlock *PrecondBB = nullptr;
-      llvm::BasicBlock *ExitBB = nullptr;
-      if (NumIters > 1) {
-        CntAddr = CGF.CreateMemTemp(C.IntTy, ".cnt.addr");
-        CGF.EmitStoreOfScalar(llvm::Constant::getNullValue(CGM.IntTy), CntAddr,
-                              /*Volatile=*/false, C.IntTy);
-        PrecondBB = CGF.createBasicBlock("precond");
-        ExitBB = CGF.createBasicBlock("exit");
-        llvm::BasicBlock *BodyBB = CGF.createBasicBlock("body");
-        // There is no need to emit line number for unconditional branch.
-        (void)ApplyDebugLocation::CreateEmpty(CGF);
-        CGF.EmitBlock(PrecondBB);
-        Cnt = CGF.EmitLoadOfScalar(CntAddr, /*Volatile=*/false, C.IntTy, Loc);
-        llvm::Value *Cmp =
-            Bld.CreateICmpULT(Cnt, llvm::ConstantInt::get(CGM.IntTy, NumIters));
-        Bld.CreateCondBr(Cmp, BodyBB, ExitBB);
-        CGF.EmitBlock(BodyBB);
-      }
-      // kmpc_barrier.
-      CGM.getOpenMPRuntime().emitBarrierCall(CGF, Loc, OMPD_unknown,
-                                             /*EmitChecks=*/false,
-                                             /*ForceSimpleCall=*/true);
-      llvm::BasicBlock *ThenBB = CGF.createBasicBlock("then");
-      llvm::BasicBlock *ElseBB = CGF.createBasicBlock("else");
-      llvm::BasicBlock *MergeBB = CGF.createBasicBlock("ifcont");
-
-      // if (lane_id == 0)
-      llvm::Value *IsWarpMaster = Bld.CreateIsNull(LaneID, "warp_master");
-      Bld.CreateCondBr(IsWarpMaster, ThenBB, ElseBB);
-      CGF.EmitBlock(ThenBB);
-
-      // Reduce element = LocalReduceList[i]
-      Address ElemPtrPtrAddr = Bld.CreateConstArrayGEP(LocalReduceList, Idx);
-      llvm::Value *ElemPtrPtr = CGF.EmitLoadOfScalar(
-          ElemPtrPtrAddr, /*Volatile=*/false, C.VoidPtrTy, SourceLocation());
-      // elemptr = ((CopyType*)(elemptrptr)) + I
-      Address ElemPtr = Address(ElemPtrPtr, Align);
-      ElemPtr = Bld.CreateElementBitCast(ElemPtr, CopyType);
-      if (NumIters > 1) {
-        ElemPtr = Address(Bld.CreateGEP(ElemPtr.getPointer(), Cnt),
-                          ElemPtr.getAlignment());
-      }
-
-      // Get pointer to location in transfer medium.
-      // MediumPtr = &medium[warp_id]
-      llvm::Value *MediumPtrVal = Bld.CreateInBoundsGEP(
-          TransferMedium, {llvm::Constant::getNullValue(CGM.Int64Ty), WarpID});
-      Address MediumPtr(MediumPtrVal, Align);
-      // Casting to actual data type.
-      // MediumPtr = (CopyType*)MediumPtrAddr;
-      MediumPtr = Bld.CreateElementBitCast(MediumPtr, CopyType);
-
-      // elem = *elemptr
-      //*MediumPtr = elem
-      llvm::Value *Elem =
-          CGF.EmitLoadOfScalar(ElemPtr, /*Volatile=*/false, CType, Loc);
-      // Store the source element value to the dest element address.
-      CGF.EmitStoreOfScalar(Elem, MediumPtr, /*Volatile=*/true, CType);
-
-      Bld.CreateBr(MergeBB);
-
-      CGF.EmitBlock(ElseBB);
-      Bld.CreateBr(MergeBB);
-
-      CGF.EmitBlock(MergeBB);
-
-      // kmpc_barrier.
-      CGM.getOpenMPRuntime().emitBarrierCall(CGF, Loc, OMPD_unknown,
-                                             /*EmitChecks=*/false,
-                                             /*ForceSimpleCall=*/true);
-
-      //
-      // Warp 0 copies reduce element from transfer medium.
-      //
-      llvm::BasicBlock *W0ThenBB = CGF.createBasicBlock("then");
-      llvm::BasicBlock *W0ElseBB = CGF.createBasicBlock("else");
-      llvm::BasicBlock *W0MergeBB = CGF.createBasicBlock("ifcont");
-
-      Address AddrNumWarpsArg = CGF.GetAddrOfLocalVar(&NumWarpsArg);
-      llvm::Value *NumWarpsVal = CGF.EmitLoadOfScalar(
-          AddrNumWarpsArg, /*Volatile=*/false, C.IntTy, Loc);
-
-      // Up to 32 threads in warp 0 are active.
-      llvm::Value *IsActiveThread =
-          Bld.CreateICmpULT(ThreadID, NumWarpsVal, "is_active_thread");
-      Bld.CreateCondBr(IsActiveThread, W0ThenBB, W0ElseBB);
-
-      CGF.EmitBlock(W0ThenBB);
-
-      // SrcMediumPtr = &medium[tid]
-      llvm::Value *SrcMediumPtrVal = Bld.CreateInBoundsGEP(
-          TransferMedium,
-          {llvm::Constant::getNullValue(CGM.Int64Ty), ThreadID});
-      Address SrcMediumPtr(SrcMediumPtrVal, Align);
-      // SrcMediumVal = *SrcMediumPtr;
-      SrcMediumPtr = Bld.CreateElementBitCast(SrcMediumPtr, CopyType);
-
-      // TargetElemPtr = (CopyType*)(SrcDataAddr[i]) + I
-      Address TargetElemPtrPtr = Bld.CreateConstArrayGEP(LocalReduceList, Idx);
-      llvm::Value *TargetElemPtrVal = CGF.EmitLoadOfScalar(
-          TargetElemPtrPtr, /*Volatile=*/false, C.VoidPtrTy, Loc);
-      Address TargetElemPtr = Address(TargetElemPtrVal, Align);
-      TargetElemPtr = Bld.CreateElementBitCast(TargetElemPtr, CopyType);
-      if (NumIters > 1) {
-        TargetElemPtr = Address(Bld.CreateGEP(TargetElemPtr.getPointer(), Cnt),
-                                TargetElemPtr.getAlignment());
-      }
-
-      // *TargetElemPtr = SrcMediumVal;
-      llvm::Value *SrcMediumValue =
-          CGF.EmitLoadOfScalar(SrcMediumPtr, /*Volatile=*/true, CType, Loc);
-      CGF.EmitStoreOfScalar(SrcMediumValue, TargetElemPtr, /*Volatile=*/false,
-                            CType);
-      Bld.CreateBr(W0MergeBB);
-
-      CGF.EmitBlock(W0ElseBB);
-      Bld.CreateBr(W0MergeBB);
-
-      CGF.EmitBlock(W0MergeBB);
-
-      if (NumIters > 1) {
-        Cnt = Bld.CreateNSWAdd(Cnt, llvm::ConstantInt::get(CGM.IntTy, /*V=*/1));
-        CGF.EmitStoreOfScalar(Cnt, CntAddr, /*Volatile=*/false, C.IntTy);
-        CGF.EmitBranch(PrecondBB);
-        (void)ApplyDebugLocation::CreateEmpty(CGF);
-        CGF.EmitBlock(ExitBB);
-      }
-      RealTySize %= TySize;
-    }
-    ++Idx;
-  }
-
-  CGF.FinishFunction();
-  return Fn;
-}
-
-/// Emit a helper that reduces data across two OpenMP threads (lanes)
-/// in the same warp.  It uses shuffle instructions to copy over data from
-/// a remote lane's stack.  The reduction algorithm performed is specified
-/// by the fourth parameter.
-///
-/// Algorithm Versions.
-/// Full Warp Reduce (argument value 0):
-///   This algorithm assumes that all 32 lanes are active and gathers
-///   data from these 32 lanes, producing a single resultant value.
-/// Contiguous Partial Warp Reduce (argument value 1):
-///   This algorithm assumes that only a *contiguous* subset of lanes
-///   are active.  This happens for the last warp in a parallel region
-///   when the user specified num_threads is not an integer multiple of
-///   32.  This contiguous subset always starts with the zeroth lane.
-/// Partial Warp Reduce (argument value 2):
-///   This algorithm gathers data from any number of lanes at any position.
-/// All reduced values are stored in the lowest possible lane.  The set
-/// of problems every algorithm addresses is a super set of those
-/// addressable by algorithms with a lower version number.  Overhead
-/// increases as algorithm version increases.
-///
-/// Terminology
-/// Reduce element:
-///   Reduce element refers to the individual data field with primitive
-///   data types to be combined and reduced across threads.
-/// Reduce list:
-///   Reduce list refers to a collection of local, thread-private
-///   reduce elements.
-/// Remote Reduce list:
-///   Remote Reduce list refers to a collection of remote (relative to
-///   the current thread) reduce elements.
-///
-/// We distinguish between three states of threads that are important to
-/// the implementation of this function.
-/// Alive threads:
-///   Threads in a warp executing the SIMT instruction, as distinguished from
-///   threads that are inactive due to divergent control flow.
-/// Active threads:
-///   The minimal set of threads that has to be alive upon entry to this
-///   function.  The computation is correct iff active threads are alive.
-///   Some threads are alive but they are not active because they do not
-///   contribute to the computation in any useful manner.  Turning them off
-///   may introduce control flow overheads without any tangible benefits.
-/// Effective threads:
-///   In order to comply with the argument requirements of the shuffle
-///   function, we must keep all lanes holding data alive.  But at most
-///   half of them perform value aggregation; we refer to this half of
-///   threads as effective. The other half is simply handing off their
-///   data.
-///
-/// Procedure
-/// Value shuffle:
-///   In this step active threads transfer data from higher lane positions
-///   in the warp to lower lane positions, creating Remote Reduce list.
-/// Value aggregation:
-///   In this step, effective threads combine their thread local Reduce list
-///   with Remote Reduce list and store the result in the thread local
-///   Reduce list.
-/// Value copy:
-///   In this step, we deal with the assumption made by algorithm 2
-///   (i.e. contiguity assumption).  When we have an odd number of lanes
-///   active, say 2k+1, only k threads will be effective and therefore k
-///   new values will be produced.  However, the Reduce list owned by the
-///   (2k+1)th thread is ignored in the value aggregation.  Therefore
-///   we copy the Reduce list from the (2k+1)th lane to (k+1)th lane so
-///   that the contiguity assumption still holds.
-static llvm::Function *emitShuffleAndReduceFunction(
-    CodeGenModule &CGM, ArrayRef<const Expr *> Privates,
-    QualType ReductionArrayTy, llvm::Function *ReduceFn, SourceLocation Loc) {
-  ASTContext &C = CGM.getContext();
-
-  // Thread local Reduce list used to host the values of data to be reduced.
-  ImplicitParamDecl ReduceListArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                  C.VoidPtrTy, ImplicitParamDecl::Other);
-  // Current lane id; could be logical.
-  ImplicitParamDecl LaneIDArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.ShortTy,
-                              ImplicitParamDecl::Other);
-  // Offset of the remote source lane relative to the current lane.
-  ImplicitParamDecl RemoteLaneOffsetArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                        C.ShortTy, ImplicitParamDecl::Other);
-  // Algorithm version.  This is expected to be known at compile time.
-  ImplicitParamDecl AlgoVerArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                               C.ShortTy, ImplicitParamDecl::Other);
-  FunctionArgList Args;
-  Args.push_back(&ReduceListArg);
-  Args.push_back(&LaneIDArg);
-  Args.push_back(&RemoteLaneOffsetArg);
-  Args.push_back(&AlgoVerArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args);
-  auto *Fn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      "_omp_reduction_shuffle_and_reduce_func", &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setDoesNotRecurse();
-  if (CGM.getLangOpts().Optimize) {
-    Fn->removeFnAttr(llvm::Attribute::NoInline);
-    Fn->removeFnAttr(llvm::Attribute::OptimizeNone);
-    Fn->addFnAttr(llvm::Attribute::AlwaysInline);
-  }
-
-  CodeGenFunction CGF(CGM);
-  CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc);
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  Address AddrReduceListArg = CGF.GetAddrOfLocalVar(&ReduceListArg);
-  Address LocalReduceList(
-      Bld.CreatePointerBitCastOrAddrSpaceCast(
-          CGF.EmitLoadOfScalar(AddrReduceListArg, /*Volatile=*/false,
-                               C.VoidPtrTy, SourceLocation()),
-          CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo()),
-      CGF.getPointerAlign());
-
-  Address AddrLaneIDArg = CGF.GetAddrOfLocalVar(&LaneIDArg);
-  llvm::Value *LaneIDArgVal = CGF.EmitLoadOfScalar(
-      AddrLaneIDArg, /*Volatile=*/false, C.ShortTy, SourceLocation());
-
-  Address AddrRemoteLaneOffsetArg = CGF.GetAddrOfLocalVar(&RemoteLaneOffsetArg);
-  llvm::Value *RemoteLaneOffsetArgVal = CGF.EmitLoadOfScalar(
-      AddrRemoteLaneOffsetArg, /*Volatile=*/false, C.ShortTy, SourceLocation());
-
-  Address AddrAlgoVerArg = CGF.GetAddrOfLocalVar(&AlgoVerArg);
-  llvm::Value *AlgoVerArgVal = CGF.EmitLoadOfScalar(
-      AddrAlgoVerArg, /*Volatile=*/false, C.ShortTy, SourceLocation());
-
-  // Create a local thread-private variable to host the Reduce list
-  // from a remote lane.
-  Address RemoteReduceList =
-      CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.remote_reduce_list");
-
-  // This loop iterates through the list of reduce elements and copies,
-  // element by element, from a remote lane in the warp to RemoteReduceList,
-  // hosted on the thread's stack.
-  emitReductionListCopy(RemoteLaneToThread, CGF, ReductionArrayTy, Privates,
-                        LocalReduceList, RemoteReduceList,
-                        {/*RemoteLaneOffset=*/RemoteLaneOffsetArgVal,
-                         /*ScratchpadIndex=*/nullptr,
-                         /*ScratchpadWidth=*/nullptr});
-
-  // The actions to be performed on the Remote Reduce list is dependent
-  // on the algorithm version.
-  //
-  //  if (AlgoVer==0) || (AlgoVer==1 && (LaneId < Offset)) || (AlgoVer==2 &&
-  //  LaneId % 2 == 0 && Offset > 0):
-  //    do the reduction value aggregation
-  //
-  //  The thread local variable Reduce list is mutated in place to host the
-  //  reduced data, which is the aggregated value produced from local and
-  //  remote lanes.
-  //
-  //  Note that AlgoVer is expected to be a constant integer known at compile
-  //  time.
-  //  When AlgoVer==0, the first conjunction evaluates to true, making
-  //    the entire predicate true during compile time.
-  //  When AlgoVer==1, the second conjunction has only the second part to be
-  //    evaluated during runtime.  Other conjunctions evaluates to false
-  //    during compile time.
-  //  When AlgoVer==2, the third conjunction has only the second part to be
-  //    evaluated during runtime.  Other conjunctions evaluates to false
-  //    during compile time.
-  llvm::Value *CondAlgo0 = Bld.CreateIsNull(AlgoVerArgVal);
-
-  llvm::Value *Algo1 = Bld.CreateICmpEQ(AlgoVerArgVal, Bld.getInt16(1));
-  llvm::Value *CondAlgo1 = Bld.CreateAnd(
-      Algo1, Bld.CreateICmpULT(LaneIDArgVal, RemoteLaneOffsetArgVal));
-
-  llvm::Value *Algo2 = Bld.CreateICmpEQ(AlgoVerArgVal, Bld.getInt16(2));
-  llvm::Value *CondAlgo2 = Bld.CreateAnd(
-      Algo2, Bld.CreateIsNull(Bld.CreateAnd(LaneIDArgVal, Bld.getInt16(1))));
-  CondAlgo2 = Bld.CreateAnd(
-      CondAlgo2, Bld.CreateICmpSGT(RemoteLaneOffsetArgVal, Bld.getInt16(0)));
-
-  llvm::Value *CondReduce = Bld.CreateOr(CondAlgo0, CondAlgo1);
-  CondReduce = Bld.CreateOr(CondReduce, CondAlgo2);
-
-  llvm::BasicBlock *ThenBB = CGF.createBasicBlock("then");
-  llvm::BasicBlock *ElseBB = CGF.createBasicBlock("else");
-  llvm::BasicBlock *MergeBB = CGF.createBasicBlock("ifcont");
-  Bld.CreateCondBr(CondReduce, ThenBB, ElseBB);
-
-  CGF.EmitBlock(ThenBB);
-  // reduce_function(LocalReduceList, RemoteReduceList)
-  llvm::Value *LocalReduceListPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      LocalReduceList.getPointer(), CGF.VoidPtrTy);
-  llvm::Value *RemoteReduceListPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      RemoteReduceList.getPointer(), CGF.VoidPtrTy);
-  CGM.getOpenMPRuntime().emitOutlinedFunctionCall(
-      CGF, Loc, ReduceFn, {LocalReduceListPtr, RemoteReduceListPtr});
-  Bld.CreateBr(MergeBB);
-
-  CGF.EmitBlock(ElseBB);
-  Bld.CreateBr(MergeBB);
-
-  CGF.EmitBlock(MergeBB);
-
-  // if (AlgoVer==1 && (LaneId >= Offset)) copy Remote Reduce list to local
-  // Reduce list.
-  Algo1 = Bld.CreateICmpEQ(AlgoVerArgVal, Bld.getInt16(1));
-  llvm::Value *CondCopy = Bld.CreateAnd(
-      Algo1, Bld.CreateICmpUGE(LaneIDArgVal, RemoteLaneOffsetArgVal));
-
-  llvm::BasicBlock *CpyThenBB = CGF.createBasicBlock("then");
-  llvm::BasicBlock *CpyElseBB = CGF.createBasicBlock("else");
-  llvm::BasicBlock *CpyMergeBB = CGF.createBasicBlock("ifcont");
-  Bld.CreateCondBr(CondCopy, CpyThenBB, CpyElseBB);
-
-  CGF.EmitBlock(CpyThenBB);
-  emitReductionListCopy(ThreadCopy, CGF, ReductionArrayTy, Privates,
-                        RemoteReduceList, LocalReduceList);
-  Bld.CreateBr(CpyMergeBB);
-
-  CGF.EmitBlock(CpyElseBB);
-  Bld.CreateBr(CpyMergeBB);
-
-  CGF.EmitBlock(CpyMergeBB);
-
-  CGF.FinishFunction();
-  return Fn;
-}
-
-/// This function emits a helper that copies all the reduction variables from
-/// the team into the provided global buffer for the reduction variables.
-///
-/// void list_to_global_copy_func(void *buffer, int Idx, void *reduce_data)
-///   For all data entries D in reduce_data:
-///     Copy local D to buffer.D[Idx]
-static llvm::Value *emitListToGlobalCopyFunction(
-    CodeGenModule &CGM, ArrayRef<const Expr *> Privates,
-    QualType ReductionArrayTy, SourceLocation Loc,
-    const RecordDecl *TeamReductionRec,
-    const llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-        &VarFieldMap) {
-  ASTContext &C = CGM.getContext();
-
-  // Buffer: global reduction buffer.
-  ImplicitParamDecl BufferArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                              C.VoidPtrTy, ImplicitParamDecl::Other);
-  // Idx: index of the buffer.
-  ImplicitParamDecl IdxArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.IntTy,
-                           ImplicitParamDecl::Other);
-  // ReduceList: thread local Reduce list.
-  ImplicitParamDecl ReduceListArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                  C.VoidPtrTy, ImplicitParamDecl::Other);
-  FunctionArgList Args;
-  Args.push_back(&BufferArg);
-  Args.push_back(&IdxArg);
-  Args.push_back(&ReduceListArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args);
-  auto *Fn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      "_omp_reduction_list_to_global_copy_func", &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setDoesNotRecurse();
-  CodeGenFunction CGF(CGM);
-  CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc);
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  Address AddrReduceListArg = CGF.GetAddrOfLocalVar(&ReduceListArg);
-  Address AddrBufferArg = CGF.GetAddrOfLocalVar(&BufferArg);
-  Address LocalReduceList(
-      Bld.CreatePointerBitCastOrAddrSpaceCast(
-          CGF.EmitLoadOfScalar(AddrReduceListArg, /*Volatile=*/false,
-                               C.VoidPtrTy, Loc),
-          CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo()),
-      CGF.getPointerAlign());
-  QualType StaticTy = C.getRecordType(TeamReductionRec);
-  llvm::Type *LLVMReductionsBufferTy =
-      CGM.getTypes().ConvertTypeForMem(StaticTy);
-  llvm::Value *BufferArrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      CGF.EmitLoadOfScalar(AddrBufferArg, /*Volatile=*/false, C.VoidPtrTy, Loc),
-      LLVMReductionsBufferTy->getPointerTo());
-  llvm::Value *Idxs[] = {llvm::ConstantInt::getNullValue(CGF.Int32Ty),
-                         CGF.EmitLoadOfScalar(CGF.GetAddrOfLocalVar(&IdxArg),
-                                              /*Volatile=*/false, C.IntTy,
-                                              Loc)};
-  unsigned Idx = 0;
-  for (const Expr *Private : Privates) {
-    // Reduce element = LocalReduceList[i]
-    Address ElemPtrPtrAddr = Bld.CreateConstArrayGEP(LocalReduceList, Idx);
-    llvm::Value *ElemPtrPtr = CGF.EmitLoadOfScalar(
-        ElemPtrPtrAddr, /*Volatile=*/false, C.VoidPtrTy, SourceLocation());
-    // elemptr = ((CopyType*)(elemptrptr)) + I
-    ElemPtrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-        ElemPtrPtr, CGF.ConvertTypeForMem(Private->getType())->getPointerTo());
-    Address ElemPtr =
-        Address(ElemPtrPtr, C.getTypeAlignInChars(Private->getType()));
-    const ValueDecl *VD = cast<DeclRefExpr>(Private)->getDecl();
-    // Global = Buffer.VD[Idx];
-    const FieldDecl *FD = VarFieldMap.lookup(VD);
-    LValue GlobLVal = CGF.EmitLValueForField(
-        CGF.MakeNaturalAlignAddrLValue(BufferArrPtr, StaticTy), FD);
-    llvm::Value *BufferPtr =
-        Bld.CreateInBoundsGEP(GlobLVal.getPointer(CGF), Idxs);
-    GlobLVal.setAddress(Address(BufferPtr, GlobLVal.getAlignment()));
-    switch (CGF.getEvaluationKind(Private->getType())) {
-    case TEK_Scalar: {
-      llvm::Value *V = CGF.EmitLoadOfScalar(ElemPtr, /*Volatile=*/false,
-                                            Private->getType(), Loc);
-      CGF.EmitStoreOfScalar(V, GlobLVal);
-      break;
-    }
-    case TEK_Complex: {
-      CodeGenFunction::ComplexPairTy V = CGF.EmitLoadOfComplex(
-          CGF.MakeAddrLValue(ElemPtr, Private->getType()), Loc);
-      CGF.EmitStoreOfComplex(V, GlobLVal, /*isInit=*/false);
-      break;
-    }
-    case TEK_Aggregate:
-      CGF.EmitAggregateCopy(GlobLVal,
-                            CGF.MakeAddrLValue(ElemPtr, Private->getType()),
-                            Private->getType(), AggValueSlot::DoesNotOverlap);
-      break;
-    }
-    ++Idx;
-  }
-
-  CGF.FinishFunction();
-  return Fn;
-}
-
-/// This function emits a helper that reduces all the reduction variables from
-/// the team into the provided global buffer for the reduction variables.
-///
-/// void list_to_global_reduce_func(void *buffer, int Idx, void *reduce_data)
-///  void *GlobPtrs[];
-///  GlobPtrs[0] = (void*)&buffer.D0[Idx];
-///  ...
-///  GlobPtrs[N] = (void*)&buffer.DN[Idx];
-///  reduce_function(GlobPtrs, reduce_data);
-static llvm::Value *emitListToGlobalReduceFunction(
-    CodeGenModule &CGM, ArrayRef<const Expr *> Privates,
-    QualType ReductionArrayTy, SourceLocation Loc,
-    const RecordDecl *TeamReductionRec,
-    const llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-        &VarFieldMap,
-    llvm::Function *ReduceFn) {
-  ASTContext &C = CGM.getContext();
-
-  // Buffer: global reduction buffer.
-  ImplicitParamDecl BufferArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                              C.VoidPtrTy, ImplicitParamDecl::Other);
-  // Idx: index of the buffer.
-  ImplicitParamDecl IdxArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.IntTy,
-                           ImplicitParamDecl::Other);
-  // ReduceList: thread local Reduce list.
-  ImplicitParamDecl ReduceListArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                  C.VoidPtrTy, ImplicitParamDecl::Other);
-  FunctionArgList Args;
-  Args.push_back(&BufferArg);
-  Args.push_back(&IdxArg);
-  Args.push_back(&ReduceListArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args);
-  auto *Fn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      "_omp_reduction_list_to_global_reduce_func", &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setDoesNotRecurse();
-  CodeGenFunction CGF(CGM);
-  CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc);
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  Address AddrBufferArg = CGF.GetAddrOfLocalVar(&BufferArg);
-  QualType StaticTy = C.getRecordType(TeamReductionRec);
-  llvm::Type *LLVMReductionsBufferTy =
-      CGM.getTypes().ConvertTypeForMem(StaticTy);
-  llvm::Value *BufferArrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      CGF.EmitLoadOfScalar(AddrBufferArg, /*Volatile=*/false, C.VoidPtrTy, Loc),
-      LLVMReductionsBufferTy->getPointerTo());
-
-  // 1. Build a list of reduction variables.
-  // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]};
-  Address ReductionList =
-      CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list");
-  auto IPriv = Privates.begin();
-  llvm::Value *Idxs[] = {llvm::ConstantInt::getNullValue(CGF.Int32Ty),
-                         CGF.EmitLoadOfScalar(CGF.GetAddrOfLocalVar(&IdxArg),
-                                              /*Volatile=*/false, C.IntTy,
-                                              Loc)};
-  unsigned Idx = 0;
-  for (unsigned I = 0, E = Privates.size(); I < E; ++I, ++IPriv, ++Idx) {
-    Address Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
-    // Global = Buffer.VD[Idx];
-    const ValueDecl *VD = cast<DeclRefExpr>(*IPriv)->getDecl();
-    const FieldDecl *FD = VarFieldMap.lookup(VD);
-    LValue GlobLVal = CGF.EmitLValueForField(
-        CGF.MakeNaturalAlignAddrLValue(BufferArrPtr, StaticTy), FD);
-    llvm::Value *BufferPtr =
-        Bld.CreateInBoundsGEP(GlobLVal.getPointer(CGF), Idxs);
-    llvm::Value *Ptr = CGF.EmitCastToVoidPtr(BufferPtr);
-    CGF.EmitStoreOfScalar(Ptr, Elem, /*Volatile=*/false, C.VoidPtrTy);
-    if ((*IPriv)->getType()->isVariablyModifiedType()) {
-      // Store array size.
-      ++Idx;
-      Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
-      llvm::Value *Size = CGF.Builder.CreateIntCast(
-          CGF.getVLASize(
-                 CGF.getContext().getAsVariableArrayType((*IPriv)->getType()))
-              .NumElts,
-          CGF.SizeTy, /*isSigned=*/false);
-      CGF.Builder.CreateStore(CGF.Builder.CreateIntToPtr(Size, CGF.VoidPtrTy),
-                              Elem);
-    }
-  }
-
-  // Call reduce_function(GlobalReduceList, ReduceList)
-  llvm::Value *GlobalReduceList =
-      CGF.EmitCastToVoidPtr(ReductionList.getPointer());
-  Address AddrReduceListArg = CGF.GetAddrOfLocalVar(&ReduceListArg);
-  llvm::Value *ReducedPtr = CGF.EmitLoadOfScalar(
-      AddrReduceListArg, /*Volatile=*/false, C.VoidPtrTy, Loc);
-  CGM.getOpenMPRuntime().emitOutlinedFunctionCall(
-      CGF, Loc, ReduceFn, {GlobalReduceList, ReducedPtr});
-  CGF.FinishFunction();
-  return Fn;
-}
-
-/// This function emits a helper that copies all the reduction variables from
-/// the team into the provided global buffer for the reduction variables.
-///
-/// void list_to_global_copy_func(void *buffer, int Idx, void *reduce_data)
-///   For all data entries D in reduce_data:
-///     Copy buffer.D[Idx] to local D;
-static llvm::Value *emitGlobalToListCopyFunction(
-    CodeGenModule &CGM, ArrayRef<const Expr *> Privates,
-    QualType ReductionArrayTy, SourceLocation Loc,
-    const RecordDecl *TeamReductionRec,
-    const llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-        &VarFieldMap) {
-  ASTContext &C = CGM.getContext();
-
-  // Buffer: global reduction buffer.
-  ImplicitParamDecl BufferArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                              C.VoidPtrTy, ImplicitParamDecl::Other);
-  // Idx: index of the buffer.
-  ImplicitParamDecl IdxArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.IntTy,
-                           ImplicitParamDecl::Other);
-  // ReduceList: thread local Reduce list.
-  ImplicitParamDecl ReduceListArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                  C.VoidPtrTy, ImplicitParamDecl::Other);
-  FunctionArgList Args;
-  Args.push_back(&BufferArg);
-  Args.push_back(&IdxArg);
-  Args.push_back(&ReduceListArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args);
-  auto *Fn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      "_omp_reduction_global_to_list_copy_func", &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setDoesNotRecurse();
-  CodeGenFunction CGF(CGM);
-  CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc);
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  Address AddrReduceListArg = CGF.GetAddrOfLocalVar(&ReduceListArg);
-  Address AddrBufferArg = CGF.GetAddrOfLocalVar(&BufferArg);
-  Address LocalReduceList(
-      Bld.CreatePointerBitCastOrAddrSpaceCast(
-          CGF.EmitLoadOfScalar(AddrReduceListArg, /*Volatile=*/false,
-                               C.VoidPtrTy, Loc),
-          CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo()),
-      CGF.getPointerAlign());
-  QualType StaticTy = C.getRecordType(TeamReductionRec);
-  llvm::Type *LLVMReductionsBufferTy =
-      CGM.getTypes().ConvertTypeForMem(StaticTy);
-  llvm::Value *BufferArrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      CGF.EmitLoadOfScalar(AddrBufferArg, /*Volatile=*/false, C.VoidPtrTy, Loc),
-      LLVMReductionsBufferTy->getPointerTo());
-
-  llvm::Value *Idxs[] = {llvm::ConstantInt::getNullValue(CGF.Int32Ty),
-                         CGF.EmitLoadOfScalar(CGF.GetAddrOfLocalVar(&IdxArg),
-                                              /*Volatile=*/false, C.IntTy,
-                                              Loc)};
-  unsigned Idx = 0;
-  for (const Expr *Private : Privates) {
-    // Reduce element = LocalReduceList[i]
-    Address ElemPtrPtrAddr = Bld.CreateConstArrayGEP(LocalReduceList, Idx);
-    llvm::Value *ElemPtrPtr = CGF.EmitLoadOfScalar(
-        ElemPtrPtrAddr, /*Volatile=*/false, C.VoidPtrTy, SourceLocation());
-    // elemptr = ((CopyType*)(elemptrptr)) + I
-    ElemPtrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-        ElemPtrPtr, CGF.ConvertTypeForMem(Private->getType())->getPointerTo());
-    Address ElemPtr =
-        Address(ElemPtrPtr, C.getTypeAlignInChars(Private->getType()));
-    const ValueDecl *VD = cast<DeclRefExpr>(Private)->getDecl();
-    // Global = Buffer.VD[Idx];
-    const FieldDecl *FD = VarFieldMap.lookup(VD);
-    LValue GlobLVal = CGF.EmitLValueForField(
-        CGF.MakeNaturalAlignAddrLValue(BufferArrPtr, StaticTy), FD);
-    llvm::Value *BufferPtr =
-        Bld.CreateInBoundsGEP(GlobLVal.getPointer(CGF), Idxs);
-    GlobLVal.setAddress(Address(BufferPtr, GlobLVal.getAlignment()));
-    switch (CGF.getEvaluationKind(Private->getType())) {
-    case TEK_Scalar: {
-      llvm::Value *V = CGF.EmitLoadOfScalar(GlobLVal, Loc);
-      CGF.EmitStoreOfScalar(V, ElemPtr, /*Volatile=*/false, Private->getType());
-      break;
-    }
-    case TEK_Complex: {
-      CodeGenFunction::ComplexPairTy V = CGF.EmitLoadOfComplex(GlobLVal, Loc);
-      CGF.EmitStoreOfComplex(V, CGF.MakeAddrLValue(ElemPtr, Private->getType()),
-                             /*isInit=*/false);
-      break;
-    }
-    case TEK_Aggregate:
-      CGF.EmitAggregateCopy(CGF.MakeAddrLValue(ElemPtr, Private->getType()),
-                            GlobLVal, Private->getType(),
-                            AggValueSlot::DoesNotOverlap);
-      break;
-    }
-    ++Idx;
-  }
-
-  CGF.FinishFunction();
-  return Fn;
-}
-
-/// This function emits a helper that reduces all the reduction variables from
-/// the team into the provided global buffer for the reduction variables.
-///
-/// void global_to_list_reduce_func(void *buffer, int Idx, void *reduce_data)
-///  void *GlobPtrs[];
-///  GlobPtrs[0] = (void*)&buffer.D0[Idx];
-///  ...
-///  GlobPtrs[N] = (void*)&buffer.DN[Idx];
-///  reduce_function(reduce_data, GlobPtrs);
-static llvm::Value *emitGlobalToListReduceFunction(
-    CodeGenModule &CGM, ArrayRef<const Expr *> Privates,
-    QualType ReductionArrayTy, SourceLocation Loc,
-    const RecordDecl *TeamReductionRec,
-    const llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *>
-        &VarFieldMap,
-    llvm::Function *ReduceFn) {
-  ASTContext &C = CGM.getContext();
-
-  // Buffer: global reduction buffer.
-  ImplicitParamDecl BufferArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                              C.VoidPtrTy, ImplicitParamDecl::Other);
-  // Idx: index of the buffer.
-  ImplicitParamDecl IdxArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.IntTy,
-                           ImplicitParamDecl::Other);
-  // ReduceList: thread local Reduce list.
-  ImplicitParamDecl ReduceListArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr,
-                                  C.VoidPtrTy, ImplicitParamDecl::Other);
-  FunctionArgList Args;
-  Args.push_back(&BufferArg);
-  Args.push_back(&IdxArg);
-  Args.push_back(&ReduceListArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args);
-  auto *Fn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      "_omp_reduction_global_to_list_reduce_func", &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setDoesNotRecurse();
-  CodeGenFunction CGF(CGM);
-  CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc);
-
-  CGBuilderTy &Bld = CGF.Builder;
-
-  Address AddrBufferArg = CGF.GetAddrOfLocalVar(&BufferArg);
-  QualType StaticTy = C.getRecordType(TeamReductionRec);
-  llvm::Type *LLVMReductionsBufferTy =
-      CGM.getTypes().ConvertTypeForMem(StaticTy);
-  llvm::Value *BufferArrPtr = Bld.CreatePointerBitCastOrAddrSpaceCast(
-      CGF.EmitLoadOfScalar(AddrBufferArg, /*Volatile=*/false, C.VoidPtrTy, Loc),
-      LLVMReductionsBufferTy->getPointerTo());
-
-  // 1. Build a list of reduction variables.
-  // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]};
-  Address ReductionList =
-      CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list");
-  auto IPriv = Privates.begin();
-  llvm::Value *Idxs[] = {llvm::ConstantInt::getNullValue(CGF.Int32Ty),
-                         CGF.EmitLoadOfScalar(CGF.GetAddrOfLocalVar(&IdxArg),
-                                              /*Volatile=*/false, C.IntTy,
-                                              Loc)};
-  unsigned Idx = 0;
-  for (unsigned I = 0, E = Privates.size(); I < E; ++I, ++IPriv, ++Idx) {
-    Address Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
-    // Global = Buffer.VD[Idx];
-    const ValueDecl *VD = cast<DeclRefExpr>(*IPriv)->getDecl();
-    const FieldDecl *FD = VarFieldMap.lookup(VD);
-    LValue GlobLVal = CGF.EmitLValueForField(
-        CGF.MakeNaturalAlignAddrLValue(BufferArrPtr, StaticTy), FD);
-    llvm::Value *BufferPtr =
-        Bld.CreateInBoundsGEP(GlobLVal.getPointer(CGF), Idxs);
-    llvm::Value *Ptr = CGF.EmitCastToVoidPtr(BufferPtr);
-    CGF.EmitStoreOfScalar(Ptr, Elem, /*Volatile=*/false, C.VoidPtrTy);
-    if ((*IPriv)->getType()->isVariablyModifiedType()) {
-      // Store array size.
-      ++Idx;
-      Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
-      llvm::Value *Size = CGF.Builder.CreateIntCast(
-          CGF.getVLASize(
-                 CGF.getContext().getAsVariableArrayType((*IPriv)->getType()))
-              .NumElts,
-          CGF.SizeTy, /*isSigned=*/false);
-      CGF.Builder.CreateStore(CGF.Builder.CreateIntToPtr(Size, CGF.VoidPtrTy),
-                              Elem);
-    }
-  }
-
-  // Call reduce_function(ReduceList, GlobalReduceList)
-  llvm::Value *GlobalReduceList =
-      CGF.EmitCastToVoidPtr(ReductionList.getPointer());
-  Address AddrReduceListArg = CGF.GetAddrOfLocalVar(&ReduceListArg);
-  llvm::Value *ReducedPtr = CGF.EmitLoadOfScalar(
-      AddrReduceListArg, /*Volatile=*/false, C.VoidPtrTy, Loc);
-  CGM.getOpenMPRuntime().emitOutlinedFunctionCall(
-      CGF, Loc, ReduceFn, {ReducedPtr, GlobalReduceList});
-  CGF.FinishFunction();
-  return Fn;
-}
-
-///
-/// Design of OpenMP reductions on the GPU
-///
-/// Consider a typical OpenMP program with one or more reduction
-/// clauses:
-///
-/// float foo;
-/// double bar;
-/// #pragma omp target teams distribute parallel for \
-///             reduction(+:foo) reduction(*:bar)
-/// for (int i = 0; i < N; i++) {
-///   foo += A[i]; bar *= B[i];
-/// }
-///
-/// where 'foo' and 'bar' are reduced across all OpenMP threads in
-/// all teams.  In our OpenMP implementation on the NVPTX device an
-/// OpenMP team is mapped to a CUDA threadblock and OpenMP threads
-/// within a team are mapped to CUDA threads within a threadblock.
-/// Our goal is to efficiently aggregate values across all OpenMP
-/// threads such that:
-///
-///   - the compiler and runtime are logically concise, and
-///   - the reduction is performed efficiently in a hierarchical
-///     manner as follows: within OpenMP threads in the same warp,
-///     across warps in a threadblock, and finally across teams on
-///     the NVPTX device.
-///
-/// Introduction to Decoupling
-///
-/// We would like to decouple the compiler and the runtime so that the
-/// latter is ignorant of the reduction variables (number, data types)
-/// and the reduction operators.  This allows a simpler interface
-/// and implementation while still attaining good performance.
-///
-/// Pseudocode for the aforementioned OpenMP program generated by the
-/// compiler is as follows:
-///
-/// 1. Create private copies of reduction variables on each OpenMP
-///    thread: 'foo_private', 'bar_private'
-/// 2. Each OpenMP thread reduces the chunk of 'A' and 'B' assigned
-///    to it and writes the result in 'foo_private' and 'bar_private'
-///    respectively.
-/// 3. Call the OpenMP runtime on the GPU to reduce within a team
-///    and store the result on the team master:
-///
-///     __kmpc_nvptx_parallel_reduce_nowait_v2(...,
-///        reduceData, shuffleReduceFn, interWarpCpyFn)
-///
-///     where:
-///       struct ReduceData {
-///         double *foo;
-///         double *bar;
-///       } reduceData
-///       reduceData.foo = &foo_private
-///       reduceData.bar = &bar_private
-///
-///     'shuffleReduceFn' and 'interWarpCpyFn' are pointers to two
-///     auxiliary functions generated by the compiler that operate on
-///     variables of type 'ReduceData'.  They aid the runtime perform
-///     algorithmic steps in a data agnostic manner.
-///
-///     'shuffleReduceFn' is a pointer to a function that reduces data
-///     of type 'ReduceData' across two OpenMP threads (lanes) in the
-///     same warp.  It takes the following arguments as input:
-///
-///     a. variable of type 'ReduceData' on the calling lane,
-///     b. its lane_id,
-///     c. an offset relative to the current lane_id to generate a
-///        remote_lane_id.  The remote lane contains the second
-///        variable of type 'ReduceData' that is to be reduced.
-///     d. an algorithm version parameter determining which reduction
-///        algorithm to use.
-///
-///     'shuffleReduceFn' retrieves data from the remote lane using
-///     efficient GPU shuffle intrinsics and reduces, using the
-///     algorithm specified by the 4th parameter, the two operands
-///     element-wise.  The result is written to the first operand.
-///
-///     Different reduction algorithms are implemented in different
-///     runtime functions, all calling 'shuffleReduceFn' to perform
-///     the essential reduction step.  Therefore, based on the 4th
-///     parameter, this function behaves slightly differently to
-///     cooperate with the runtime to ensure correctness under
-///     different circumstances.
-///
-///     'InterWarpCpyFn' is a pointer to a function that transfers
-///     reduced variables across warps.  It tunnels, through CUDA
-///     shared memory, the thread-private data of type 'ReduceData'
-///     from lane 0 of each warp to a lane in the first warp.
-/// 4. Call the OpenMP runtime on the GPU to reduce across teams.
-///    The last team writes the global reduced value to memory.
-///
-///     ret = __kmpc_nvptx_teams_reduce_nowait(...,
-///             reduceData, shuffleReduceFn, interWarpCpyFn,
-///             scratchpadCopyFn, loadAndReduceFn)
-///
-///     'scratchpadCopyFn' is a helper that stores reduced
-///     data from the team master to a scratchpad array in
-///     global memory.
-///
-///     'loadAndReduceFn' is a helper that loads data from
-///     the scratchpad array and reduces it with the input
-///     operand.
-///
-///     These compiler generated functions hide address
-///     calculation and alignment information from the runtime.
-/// 5. if ret == 1:
-///     The team master of the last team stores the reduced
-///     result to the globals in memory.
-///     foo += reduceData.foo; bar *= reduceData.bar
-///
-///
-/// Warp Reduction Algorithms
-///
-/// On the warp level, we have three algorithms implemented in the
-/// OpenMP runtime depending on the number of active lanes:
-///
-/// Full Warp Reduction
-///
-/// The reduce algorithm within a warp where all lanes are active
-/// is implemented in the runtime as follows:
-///
-/// full_warp_reduce(void *reduce_data,
-///                  kmp_ShuffleReductFctPtr ShuffleReduceFn) {
-///   for (int offset = WARPSIZE/2; offset > 0; offset /= 2)
-///     ShuffleReduceFn(reduce_data, 0, offset, 0);
-/// }
-///
-/// The algorithm completes in log(2, WARPSIZE) steps.
-///
-/// 'ShuffleReduceFn' is used here with lane_id set to 0 because it is
-/// not used therefore we save instructions by not retrieving lane_id
-/// from the corresponding special registers.  The 4th parameter, which
-/// represents the version of the algorithm being used, is set to 0 to
-/// signify full warp reduction.
-///
-/// In this version, 'ShuffleReduceFn' behaves, per element, as follows:
-///
-/// #reduce_elem refers to an element in the local lane's data structure
-/// #remote_elem is retrieved from a remote lane
-/// remote_elem = shuffle_down(reduce_elem, offset, WARPSIZE);
-/// reduce_elem = reduce_elem REDUCE_OP remote_elem;
-///
-/// Contiguous Partial Warp Reduction
-///
-/// This reduce algorithm is used within a warp where only the first
-/// 'n' (n <= WARPSIZE) lanes are active.  It is typically used when the
-/// number of OpenMP threads in a parallel region is not a multiple of
-/// WARPSIZE.  The algorithm is implemented in the runtime as follows:
-///
-/// void
-/// contiguous_partial_reduce(void *reduce_data,
-///                           kmp_ShuffleReductFctPtr ShuffleReduceFn,
-///                           int size, int lane_id) {
-///   int curr_size;
-///   int offset;
-///   curr_size = size;
-///   mask = curr_size/2;
-///   while (offset>0) {
-///     ShuffleReduceFn(reduce_data, lane_id, offset, 1);
-///     curr_size = (curr_size+1)/2;
-///     offset = curr_size/2;
-///   }
-/// }
-///
-/// In this version, 'ShuffleReduceFn' behaves, per element, as follows:
-///
-/// remote_elem = shuffle_down(reduce_elem, offset, WARPSIZE);
-/// if (lane_id < offset)
-///     reduce_elem = reduce_elem REDUCE_OP remote_elem
-/// else
-///     reduce_elem = remote_elem
-///
-/// This algorithm assumes that the data to be reduced are located in a
-/// contiguous subset of lanes starting from the first.  When there is
-/// an odd number of active lanes, the data in the last lane is not
-/// aggregated with any other lane's dat but is instead copied over.
-///
-/// Dispersed Partial Warp Reduction
-///
-/// This algorithm is used within a warp when any discontiguous subset of
-/// lanes are active.  It is used to implement the reduction operation
-/// across lanes in an OpenMP simd region or in a nested parallel region.
-///
-/// void
-/// dispersed_partial_reduce(void *reduce_data,
-///                          kmp_ShuffleReductFctPtr ShuffleReduceFn) {
-///   int size, remote_id;
-///   int logical_lane_id = number_of_active_lanes_before_me() * 2;
-///   do {
-///       remote_id = next_active_lane_id_right_after_me();
-///       # the above function returns 0 of no active lane
-///       # is present right after the current lane.
-///       size = number_of_active_lanes_in_this_warp();
-///       logical_lane_id /= 2;
-///       ShuffleReduceFn(reduce_data, logical_lane_id,
-///                       remote_id-1-threadIdx.x, 2);
-///   } while (logical_lane_id % 2 == 0 && size > 1);
-/// }
-///
-/// There is no assumption made about the initial state of the reduction.
-/// Any number of lanes (>=1) could be active at any position.  The reduction
-/// result is returned in the first active lane.
-///
-/// In this version, 'ShuffleReduceFn' behaves, per element, as follows:
-///
-/// remote_elem = shuffle_down(reduce_elem, offset, WARPSIZE);
-/// if (lane_id % 2 == 0 && offset > 0)
-///     reduce_elem = reduce_elem REDUCE_OP remote_elem
-/// else
-///     reduce_elem = remote_elem
-///
-///
-/// Intra-Team Reduction
-///
-/// This function, as implemented in the runtime call
-/// '__kmpc_nvptx_parallel_reduce_nowait_v2', aggregates data across OpenMP
-/// threads in a team.  It first reduces within a warp using the
-/// aforementioned algorithms.  We then proceed to gather all such
-/// reduced values at the first warp.
-///
-/// The runtime makes use of the function 'InterWarpCpyFn', which copies
-/// data from each of the "warp master" (zeroth lane of each warp, where
-/// warp-reduced data is held) to the zeroth warp.  This step reduces (in
-/// a mathematical sense) the problem of reduction across warp masters in
-/// a block to the problem of warp reduction.
-///
-///
-/// Inter-Team Reduction
-///
-/// Once a team has reduced its data to a single value, it is stored in
-/// a global scratchpad array.  Since each team has a distinct slot, this
-/// can be done without locking.
-///
-/// The last team to write to the scratchpad array proceeds to reduce the
-/// scratchpad array.  One or more workers in the last team use the helper
-/// 'loadAndReduceDataFn' to load and reduce values from the array, i.e.,
-/// the k'th worker reduces every k'th element.
-///
-/// Finally, a call is made to '__kmpc_nvptx_parallel_reduce_nowait_v2' to
-/// reduce across workers and compute a globally reduced value.
-///
-void CGOpenMPRuntimeNVPTX::emitReduction(
-    CodeGenFunction &CGF, SourceLocation Loc, ArrayRef<const Expr *> Privates,
-    ArrayRef<const Expr *> LHSExprs, ArrayRef<const Expr *> RHSExprs,
-    ArrayRef<const Expr *> ReductionOps, ReductionOptionsTy Options) {
-  if (!CGF.HaveInsertPoint())
-    return;
-
-  bool ParallelReduction = isOpenMPParallelDirective(Options.ReductionKind);
-#ifndef NDEBUG
-  bool TeamsReduction = isOpenMPTeamsDirective(Options.ReductionKind);
-#endif
-
-  if (Options.SimpleReduction) {
-    assert(!TeamsReduction && !ParallelReduction &&
-           "Invalid reduction selection in emitReduction.");
-    CGOpenMPRuntime::emitReduction(CGF, Loc, Privates, LHSExprs, RHSExprs,
-                                   ReductionOps, Options);
-    return;
-  }
-
-  assert((TeamsReduction || ParallelReduction) &&
-         "Invalid reduction selection in emitReduction.");
-
-  // Build res = __kmpc_reduce{_nowait}(<gtid>, <n>, sizeof(RedList),
-  // RedList, shuffle_reduce_func, interwarp_copy_func);
-  // or
-  // Build res = __kmpc_reduce_teams_nowait_simple(<loc>, <gtid>, <lck>);
-  llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc);
-  llvm::Value *ThreadId = getThreadID(CGF, Loc);
-
-  llvm::Value *Res;
-  ASTContext &C = CGM.getContext();
-  // 1. Build a list of reduction variables.
-  // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]};
-  auto Size = RHSExprs.size();
-  for (const Expr *E : Privates) {
-    if (E->getType()->isVariablyModifiedType())
-      // Reserve place for array size.
-      ++Size;
-  }
-  llvm::APInt ArraySize(/*unsigned int numBits=*/32, Size);
-  QualType ReductionArrayTy =
-      C.getConstantArrayType(C.VoidPtrTy, ArraySize, nullptr, ArrayType::Normal,
-                             /*IndexTypeQuals=*/0);
-  Address ReductionList =
-      CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list");
-  auto IPriv = Privates.begin();
-  unsigned Idx = 0;
-  for (unsigned I = 0, E = RHSExprs.size(); I < E; ++I, ++IPriv, ++Idx) {
-    Address Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
-    CGF.Builder.CreateStore(
-        CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-            CGF.EmitLValue(RHSExprs[I]).getPointer(CGF), CGF.VoidPtrTy),
-        Elem);
-    if ((*IPriv)->getType()->isVariablyModifiedType()) {
-      // Store array size.
-      ++Idx;
-      Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx);
-      llvm::Value *Size = CGF.Builder.CreateIntCast(
-          CGF.getVLASize(
-                 CGF.getContext().getAsVariableArrayType((*IPriv)->getType()))
-              .NumElts,
-          CGF.SizeTy, /*isSigned=*/false);
-      CGF.Builder.CreateStore(CGF.Builder.CreateIntToPtr(Size, CGF.VoidPtrTy),
-                              Elem);
-    }
-  }
-
-  llvm::Value *RL = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-      ReductionList.getPointer(), CGF.VoidPtrTy);
-  llvm::Function *ReductionFn = emitReductionFunction(
-      Loc, CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo(), Privates,
-      LHSExprs, RHSExprs, ReductionOps);
-  llvm::Value *ReductionArrayTySize = CGF.getTypeSize(ReductionArrayTy);
-  llvm::Function *ShuffleAndReduceFn = emitShuffleAndReduceFunction(
-      CGM, Privates, ReductionArrayTy, ReductionFn, Loc);
-  llvm::Value *InterWarpCopyFn =
-      emitInterWarpCopyFunction(CGM, Privates, ReductionArrayTy, Loc);
-
-  if (ParallelReduction) {
-    llvm::Value *Args[] = {RTLoc,
-                           ThreadId,
-                           CGF.Builder.getInt32(RHSExprs.size()),
-                           ReductionArrayTySize,
-                           RL,
-                           ShuffleAndReduceFn,
-                           InterWarpCopyFn};
-
-    Res = CGF.EmitRuntimeCall(
-        createNVPTXRuntimeFunction(
-            OMPRTL_NVPTX__kmpc_nvptx_parallel_reduce_nowait_v2),
-        Args);
-  } else {
-    assert(TeamsReduction && "expected teams reduction.");
-    llvm::SmallDenseMap<const ValueDecl *, const FieldDecl *> VarFieldMap;
-    llvm::SmallVector<const ValueDecl *, 4> PrivatesReductions(Privates.size());
-    int Cnt = 0;
-    for (const Expr *DRE : Privates) {
-      PrivatesReductions[Cnt] = cast<DeclRefExpr>(DRE)->getDecl();
-      ++Cnt;
-    }
-    const RecordDecl *TeamReductionRec = ::buildRecordForGlobalizedVars(
-        CGM.getContext(), PrivatesReductions, llvm::None, VarFieldMap,
-        C.getLangOpts().OpenMPCUDAReductionBufNum);
-    TeamsReductions.push_back(TeamReductionRec);
-    if (!KernelTeamsReductionPtr) {
-      KernelTeamsReductionPtr = new llvm::GlobalVariable(
-          CGM.getModule(), CGM.VoidPtrTy, /*isConstant=*/true,
-          llvm::GlobalValue::InternalLinkage, nullptr,
-          "_openmp_teams_reductions_buffer_$_$ptr");
-    }
-    llvm::Value *GlobalBufferPtr = CGF.EmitLoadOfScalar(
-        Address(KernelTeamsReductionPtr, CGM.getPointerAlign()),
-        /*Volatile=*/false, C.getPointerType(C.VoidPtrTy), Loc);
-    llvm::Value *GlobalToBufferCpyFn = ::emitListToGlobalCopyFunction(
-        CGM, Privates, ReductionArrayTy, Loc, TeamReductionRec, VarFieldMap);
-    llvm::Value *GlobalToBufferRedFn = ::emitListToGlobalReduceFunction(
-        CGM, Privates, ReductionArrayTy, Loc, TeamReductionRec, VarFieldMap,
-        ReductionFn);
-    llvm::Value *BufferToGlobalCpyFn = ::emitGlobalToListCopyFunction(
-        CGM, Privates, ReductionArrayTy, Loc, TeamReductionRec, VarFieldMap);
-    llvm::Value *BufferToGlobalRedFn = ::emitGlobalToListReduceFunction(
-        CGM, Privates, ReductionArrayTy, Loc, TeamReductionRec, VarFieldMap,
-        ReductionFn);
-
-    llvm::Value *Args[] = {
-        RTLoc,
-        ThreadId,
-        GlobalBufferPtr,
-        CGF.Builder.getInt32(C.getLangOpts().OpenMPCUDAReductionBufNum),
-        RL,
-        ShuffleAndReduceFn,
-        InterWarpCopyFn,
-        GlobalToBufferCpyFn,
-        GlobalToBufferRedFn,
-        BufferToGlobalCpyFn,
-        BufferToGlobalRedFn};
-
-    Res = CGF.EmitRuntimeCall(
-        createNVPTXRuntimeFunction(
-            OMPRTL_NVPTX__kmpc_nvptx_teams_reduce_nowait_v2),
-        Args);
-  }
-
-  // 5. Build if (res == 1)
-  llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".omp.reduction.done");
-  llvm::BasicBlock *ThenBB = CGF.createBasicBlock(".omp.reduction.then");
-  llvm::Value *Cond = CGF.Builder.CreateICmpEQ(
-      Res, llvm::ConstantInt::get(CGM.Int32Ty, /*V=*/1));
-  CGF.Builder.CreateCondBr(Cond, ThenBB, ExitBB);
-
-  // 6. Build then branch: where we have reduced values in the master
-  //    thread in each team.
-  //    __kmpc_end_reduce{_nowait}(<gtid>);
-  //    break;
-  CGF.EmitBlock(ThenBB);
-
-  // Add emission of __kmpc_end_reduce{_nowait}(<gtid>);
-  auto &&CodeGen = [Privates, LHSExprs, RHSExprs, ReductionOps,
-                    this](CodeGenFunction &CGF, PrePostActionTy &Action) {
-    auto IPriv = Privates.begin();
-    auto ILHS = LHSExprs.begin();
-    auto IRHS = RHSExprs.begin();
-    for (const Expr *E : ReductionOps) {
-      emitSingleReductionCombiner(CGF, E, *IPriv, cast<DeclRefExpr>(*ILHS),
-                                  cast<DeclRefExpr>(*IRHS));
-      ++IPriv;
-      ++ILHS;
-      ++IRHS;
-    }
-  };
-  llvm::Value *EndArgs[] = {ThreadId};
-  RegionCodeGenTy RCG(CodeGen);
-  NVPTXActionTy Action(
-      nullptr, llvm::None,
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_end_reduce_nowait),
-      EndArgs);
-  RCG.setAction(Action);
-  RCG(CGF);
-  // There is no need to emit line number for unconditional branch.
-  (void)ApplyDebugLocation::CreateEmpty(CGF);
-  CGF.EmitBlock(ExitBB, /*IsFinished=*/true);
-}
-
-const VarDecl *
-CGOpenMPRuntimeNVPTX::translateParameter(const FieldDecl *FD,
-                                         const VarDecl *NativeParam) const {
-  if (!NativeParam->getType()->isReferenceType())
-    return NativeParam;
-  QualType ArgType = NativeParam->getType();
-  QualifierCollector QC;
-  const Type *NonQualTy = QC.strip(ArgType);
-  QualType PointeeTy = cast<ReferenceType>(NonQualTy)->getPointeeType();
-  if (const auto *Attr = FD->getAttr<OMPCaptureKindAttr>()) {
-    if (Attr->getCaptureKind() == OMPC_map) {
-      PointeeTy = CGM.getContext().getAddrSpaceQualType(PointeeTy,
-                                                        LangAS::opencl_global);
-    } else if (Attr->getCaptureKind() == OMPC_firstprivate &&
-               PointeeTy.isConstant(CGM.getContext())) {
-      PointeeTy = CGM.getContext().getAddrSpaceQualType(PointeeTy,
-                                                        LangAS::opencl_generic);
-    }
-  }
-  ArgType = CGM.getContext().getPointerType(PointeeTy);
-  QC.addRestrict();
-  enum { NVPTX_local_addr = 5 };
-  QC.addAddressSpace(getLangASFromTargetAS(NVPTX_local_addr));
-  ArgType = QC.apply(CGM.getContext(), ArgType);
-  if (isa<ImplicitParamDecl>(NativeParam))
-    return ImplicitParamDecl::Create(
-        CGM.getContext(), /*DC=*/nullptr, NativeParam->getLocation(),
-        NativeParam->getIdentifier(), ArgType, ImplicitParamDecl::Other);
-  return ParmVarDecl::Create(
-      CGM.getContext(),
-      const_cast<DeclContext *>(NativeParam->getDeclContext()),
-      NativeParam->getBeginLoc(), NativeParam->getLocation(),
-      NativeParam->getIdentifier(), ArgType,
-      /*TInfo=*/nullptr, SC_None, /*DefArg=*/nullptr);
-}
-
-Address
-CGOpenMPRuntimeNVPTX::getParameterAddress(CodeGenFunction &CGF,
-                                          const VarDecl *NativeParam,
-                                          const VarDecl *TargetParam) const {
-  assert(NativeParam != TargetParam &&
-         NativeParam->getType()->isReferenceType() &&
-         "Native arg must not be the same as target arg.");
-  Address LocalAddr = CGF.GetAddrOfLocalVar(TargetParam);
-  QualType NativeParamType = NativeParam->getType();
-  QualifierCollector QC;
-  const Type *NonQualTy = QC.strip(NativeParamType);
-  QualType NativePointeeTy = cast<ReferenceType>(NonQualTy)->getPointeeType();
-  unsigned NativePointeeAddrSpace =
-      CGF.getContext().getTargetAddressSpace(NativePointeeTy);
-  QualType TargetTy = TargetParam->getType();
-  llvm::Value *TargetAddr = CGF.EmitLoadOfScalar(
-      LocalAddr, /*Volatile=*/false, TargetTy, SourceLocation());
-  // First cast to generic.
-  TargetAddr = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-      TargetAddr, TargetAddr->getType()->getPointerElementType()->getPointerTo(
-                      /*AddrSpace=*/0));
-  // Cast from generic to native address space.
-  TargetAddr = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-      TargetAddr, TargetAddr->getType()->getPointerElementType()->getPointerTo(
-                      NativePointeeAddrSpace));
-  Address NativeParamAddr = CGF.CreateMemTemp(NativeParamType);
-  CGF.EmitStoreOfScalar(TargetAddr, NativeParamAddr, /*Volatile=*/false,
-                        NativeParamType);
-  return NativeParamAddr;
-}
-
-void CGOpenMPRuntimeNVPTX::emitOutlinedFunctionCall(
-    CodeGenFunction &CGF, SourceLocation Loc, llvm::FunctionCallee OutlinedFn,
-    ArrayRef<llvm::Value *> Args) const {
-  SmallVector<llvm::Value *, 4> TargetArgs;
-  TargetArgs.reserve(Args.size());
-  auto *FnType = OutlinedFn.getFunctionType();
-  for (unsigned I = 0, E = Args.size(); I < E; ++I) {
-    if (FnType->isVarArg() && FnType->getNumParams() <= I) {
-      TargetArgs.append(std::next(Args.begin(), I), Args.end());
-      break;
-    }
-    llvm::Type *TargetType = FnType->getParamType(I);
-    llvm::Value *NativeArg = Args[I];
-    if (!TargetType->isPointerTy()) {
-      TargetArgs.emplace_back(NativeArg);
-      continue;
-    }
-    llvm::Value *TargetArg = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
-        NativeArg,
-        NativeArg->getType()->getPointerElementType()->getPointerTo());
-    TargetArgs.emplace_back(
-        CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(TargetArg, TargetType));
-  }
-  CGOpenMPRuntime::emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, TargetArgs);
-}
-
-/// Emit function which wraps the outline parallel region
-/// and controls the arguments which are passed to this function.
-/// The wrapper ensures that the outlined function is called
-/// with the correct arguments when data is shared.
-llvm::Function *CGOpenMPRuntimeNVPTX::createParallelDataSharingWrapper(
-    llvm::Function *OutlinedParallelFn, const OMPExecutableDirective &D) {
-  ASTContext &Ctx = CGM.getContext();
-  const auto &CS = *D.getCapturedStmt(OMPD_parallel);
-
-  // Create a function that takes as argument the source thread.
-  FunctionArgList WrapperArgs;
-  QualType Int16QTy =
-      Ctx.getIntTypeForBitwidth(/*DestWidth=*/16, /*Signed=*/false);
-  QualType Int32QTy =
-      Ctx.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/false);
-  ImplicitParamDecl ParallelLevelArg(Ctx, /*DC=*/nullptr, D.getBeginLoc(),
-                                     /*Id=*/nullptr, Int16QTy,
-                                     ImplicitParamDecl::Other);
-  ImplicitParamDecl WrapperArg(Ctx, /*DC=*/nullptr, D.getBeginLoc(),
-                               /*Id=*/nullptr, Int32QTy,
-                               ImplicitParamDecl::Other);
-  WrapperArgs.emplace_back(&ParallelLevelArg);
-  WrapperArgs.emplace_back(&WrapperArg);
-
-  const CGFunctionInfo &CGFI =
-      CGM.getTypes().arrangeBuiltinFunctionDeclaration(Ctx.VoidTy, WrapperArgs);
-
-  auto *Fn = llvm::Function::Create(
-      CGM.getTypes().GetFunctionType(CGFI), llvm::GlobalValue::InternalLinkage,
-      Twine(OutlinedParallelFn->getName(), "_wrapper"), &CGM.getModule());
-  CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI);
-  Fn->setLinkage(llvm::GlobalValue::InternalLinkage);
-  Fn->setDoesNotRecurse();
-
-  CodeGenFunction CGF(CGM, /*suppressNewContext=*/true);
-  CGF.StartFunction(GlobalDecl(), Ctx.VoidTy, Fn, CGFI, WrapperArgs,
-                    D.getBeginLoc(), D.getBeginLoc());
-
-  const auto *RD = CS.getCapturedRecordDecl();
-  auto CurField = RD->field_begin();
-
-  Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty,
-                                                      /*Name=*/".zero.addr");
-  CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0));
-  // Get the array of arguments.
-  SmallVector<llvm::Value *, 8> Args;
-
-  Args.emplace_back(CGF.GetAddrOfLocalVar(&WrapperArg).getPointer());
-  Args.emplace_back(ZeroAddr.getPointer());
-
-  CGBuilderTy &Bld = CGF.Builder;
-  auto CI = CS.capture_begin();
-
-  // Use global memory for data sharing.
-  // Handle passing of global args to workers.
-  Address GlobalArgs =
-      CGF.CreateDefaultAlignTempAlloca(CGF.VoidPtrPtrTy, "global_args");
-  llvm::Value *GlobalArgsPtr = GlobalArgs.getPointer();
-  llvm::Value *DataSharingArgs[] = {GlobalArgsPtr};
-  CGF.EmitRuntimeCall(
-      createNVPTXRuntimeFunction(OMPRTL_NVPTX__kmpc_get_shared_variables),
-      DataSharingArgs);
-
-  // Retrieve the shared variables from the list of references returned
-  // by the runtime. Pass the variables to the outlined function.
-  Address SharedArgListAddress = Address::invalid();
-  if (CS.capture_size() > 0 ||
-      isOpenMPLoopBoundSharingDirective(D.getDirectiveKind())) {
-    SharedArgListAddress = CGF.EmitLoadOfPointer(
-        GlobalArgs, CGF.getContext()
-                        .getPointerType(CGF.getContext().getPointerType(
-                            CGF.getContext().VoidPtrTy))
-                        .castAs<PointerType>());
-  }
-  unsigned Idx = 0;
-  if (isOpenMPLoopBoundSharingDirective(D.getDirectiveKind())) {
-    Address Src = Bld.CreateConstInBoundsGEP(SharedArgListAddress, Idx);
-    Address TypedAddress = Bld.CreatePointerBitCastOrAddrSpaceCast(
-        Src, CGF.SizeTy->getPointerTo());
-    llvm::Value *LB = CGF.EmitLoadOfScalar(
-        TypedAddress,
-        /*Volatile=*/false,
-        CGF.getContext().getPointerType(CGF.getContext().getSizeType()),
-        cast<OMPLoopDirective>(D).getLowerBoundVariable()->getExprLoc());
-    Args.emplace_back(LB);
-    ++Idx;
-    Src = Bld.CreateConstInBoundsGEP(SharedArgListAddress, Idx);
-    TypedAddress = Bld.CreatePointerBitCastOrAddrSpaceCast(
-        Src, CGF.SizeTy->getPointerTo());
-    llvm::Value *UB = CGF.EmitLoadOfScalar(
-        TypedAddress,
-        /*Volatile=*/false,
-        CGF.getContext().getPointerType(CGF.getContext().getSizeType()),
-        cast<OMPLoopDirective>(D).getUpperBoundVariable()->getExprLoc());
-    Args.emplace_back(UB);
-    ++Idx;
-  }
-  if (CS.capture_size() > 0) {
-    ASTContext &CGFContext = CGF.getContext();
-    for (unsigned I = 0, E = CS.capture_size(); I < E; ++I, ++CI, ++CurField) {
-      QualType ElemTy = CurField->getType();
-      Address Src = Bld.CreateConstInBoundsGEP(SharedArgListAddress, I + Idx);
-      Address TypedAddress = Bld.CreatePointerBitCastOrAddrSpaceCast(
-          Src, CGF.ConvertTypeForMem(CGFContext.getPointerType(ElemTy)));
-      llvm::Value *Arg = CGF.EmitLoadOfScalar(TypedAddress,
-                                              /*Volatile=*/false,
-                                              CGFContext.getPointerType(ElemTy),
-                                              CI->getLocation());
-      if (CI->capturesVariableByCopy() &&
-          !CI->getCapturedVar()->getType()->isAnyPointerType()) {
-        Arg = castValueToType(CGF, Arg, ElemTy, CGFContext.getUIntPtrType(),
-                              CI->getLocation());
-      }
-      Args.emplace_back(Arg);
-    }
-  }
-
-  emitOutlinedFunctionCall(CGF, D.getBeginLoc(), OutlinedParallelFn, Args);
-  CGF.FinishFunction();
-  return Fn;
-}
-
-void CGOpenMPRuntimeNVPTX::emitFunctionProlog(CodeGenFunction &CGF,
-                                              const Decl *D) {
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic)
-    return;
-
-  assert(D && "Expected function or captured|block decl.");
-  assert(FunctionGlobalizedDecls.count(CGF.CurFn) == 0 &&
-         "Function is registered already.");
-  assert((!TeamAndReductions.first || TeamAndReductions.first == D) &&
-         "Team is set but not processed.");
-  const Stmt *Body = nullptr;
-  bool NeedToDelayGlobalization = false;
-  if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
-    Body = FD->getBody();
-  } else if (const auto *BD = dyn_cast<BlockDecl>(D)) {
-    Body = BD->getBody();
-  } else if (const auto *CD = dyn_cast<CapturedDecl>(D)) {
-    Body = CD->getBody();
-    NeedToDelayGlobalization = CGF.CapturedStmtInfo->getKind() == CR_OpenMP;
-    if (NeedToDelayGlobalization &&
-        getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
-      return;
-  }
-  if (!Body)
-    return;
-  CheckVarsEscapingDeclContext VarChecker(CGF, TeamAndReductions.second);
-  VarChecker.Visit(Body);
-  const RecordDecl *GlobalizedVarsRecord =
-      VarChecker.getGlobalizedRecord(IsInTTDRegion);
-  TeamAndReductions.first = nullptr;
-  TeamAndReductions.second.clear();
-  ArrayRef<const ValueDecl *> EscapedVariableLengthDecls =
-      VarChecker.getEscapedVariableLengthDecls();
-  if (!GlobalizedVarsRecord && EscapedVariableLengthDecls.empty())
-    return;
-  auto I = FunctionGlobalizedDecls.try_emplace(CGF.CurFn).first;
-  I->getSecond().MappedParams =
-      std::make_unique<CodeGenFunction::OMPMapVars>();
-  I->getSecond().GlobalRecord = GlobalizedVarsRecord;
-  I->getSecond().EscapedParameters.insert(
-      VarChecker.getEscapedParameters().begin(),
-      VarChecker.getEscapedParameters().end());
-  I->getSecond().EscapedVariableLengthDecls.append(
-      EscapedVariableLengthDecls.begin(), EscapedVariableLengthDecls.end());
-  DeclToAddrMapTy &Data = I->getSecond().LocalVarData;
-  for (const ValueDecl *VD : VarChecker.getEscapedDecls()) {
-    assert(VD->isCanonicalDecl() && "Expected canonical declaration");
-    const FieldDecl *FD = VarChecker.getFieldForGlobalizedVar(VD);
-    Data.insert(std::make_pair(VD, MappedVarData(FD, IsInTTDRegion)));
-  }
-  if (!IsInTTDRegion && !NeedToDelayGlobalization && !IsInParallelRegion) {
-    CheckVarsEscapingDeclContext VarChecker(CGF, llvm::None);
-    VarChecker.Visit(Body);
-    I->getSecond().SecondaryGlobalRecord =
-        VarChecker.getGlobalizedRecord(/*IsInTTDRegion=*/true);
-    I->getSecond().SecondaryLocalVarData.emplace();
-    DeclToAddrMapTy &Data = I->getSecond().SecondaryLocalVarData.getValue();
-    for (const ValueDecl *VD : VarChecker.getEscapedDecls()) {
-      assert(VD->isCanonicalDecl() && "Expected canonical declaration");
-      const FieldDecl *FD = VarChecker.getFieldForGlobalizedVar(VD);
-      Data.insert(
-          std::make_pair(VD, MappedVarData(FD, /*IsInTTDRegion=*/true)));
-    }
-  }
-  if (!NeedToDelayGlobalization) {
-    emitGenericVarsProlog(CGF, D->getBeginLoc(), /*WithSPMDCheck=*/true);
-    struct GlobalizationScope final : EHScopeStack::Cleanup {
-      GlobalizationScope() = default;
-
-      void Emit(CodeGenFunction &CGF, Flags flags) override {
-        static_cast<CGOpenMPRuntimeNVPTX &>(CGF.CGM.getOpenMPRuntime())
-            .emitGenericVarsEpilog(CGF, /*WithSPMDCheck=*/true);
-      }
-    };
-    CGF.EHStack.pushCleanup<GlobalizationScope>(NormalAndEHCleanup);
-  }
-}
-
-Address CGOpenMPRuntimeNVPTX::getAddressOfLocalVariable(CodeGenFunction &CGF,
-                                                        const VarDecl *VD) {
-  if (VD && VD->hasAttr<OMPAllocateDeclAttr>()) {
-    const auto *A = VD->getAttr<OMPAllocateDeclAttr>();
-    switch (A->getAllocatorType()) {
-      // Use the default allocator here as by default local vars are
-      // threadlocal.
-    case OMPAllocateDeclAttr::OMPNullMemAlloc:
-    case OMPAllocateDeclAttr::OMPDefaultMemAlloc:
-    case OMPAllocateDeclAttr::OMPThreadMemAlloc:
-    case OMPAllocateDeclAttr::OMPHighBWMemAlloc:
-    case OMPAllocateDeclAttr::OMPLowLatMemAlloc:
-      // Follow the user decision - use default allocation.
-      return Address::invalid();
-    case OMPAllocateDeclAttr::OMPUserDefinedMemAlloc:
-      // TODO: implement aupport for user-defined allocators.
-      return Address::invalid();
-    case OMPAllocateDeclAttr::OMPConstMemAlloc: {
-      llvm::Type *VarTy = CGF.ConvertTypeForMem(VD->getType());
-      auto *GV = new llvm::GlobalVariable(
-          CGM.getModule(), VarTy, /*isConstant=*/false,
-          llvm::GlobalValue::InternalLinkage,
-          llvm::Constant::getNullValue(VarTy), VD->getName(),
-          /*InsertBefore=*/nullptr, llvm::GlobalValue::NotThreadLocal,
-          CGM.getContext().getTargetAddressSpace(LangAS::cuda_constant));
-      CharUnits Align = CGM.getContext().getDeclAlign(VD);
-      GV->setAlignment(Align.getAsAlign());
-      return Address(GV, Align);
-    }
-    case OMPAllocateDeclAttr::OMPPTeamMemAlloc: {
-      llvm::Type *VarTy = CGF.ConvertTypeForMem(VD->getType());
-      auto *GV = new llvm::GlobalVariable(
-          CGM.getModule(), VarTy, /*isConstant=*/false,
-          llvm::GlobalValue::InternalLinkage,
-          llvm::Constant::getNullValue(VarTy), VD->getName(),
-          /*InsertBefore=*/nullptr, llvm::GlobalValue::NotThreadLocal,
-          CGM.getContext().getTargetAddressSpace(LangAS::cuda_shared));
-      CharUnits Align = CGM.getContext().getDeclAlign(VD);
-      GV->setAlignment(Align.getAsAlign());
-      return Address(GV, Align);
-    }
-    case OMPAllocateDeclAttr::OMPLargeCapMemAlloc:
-    case OMPAllocateDeclAttr::OMPCGroupMemAlloc: {
-      llvm::Type *VarTy = CGF.ConvertTypeForMem(VD->getType());
-      auto *GV = new llvm::GlobalVariable(
-          CGM.getModule(), VarTy, /*isConstant=*/false,
-          llvm::GlobalValue::InternalLinkage,
-          llvm::Constant::getNullValue(VarTy), VD->getName());
-      CharUnits Align = CGM.getContext().getDeclAlign(VD);
-      GV->setAlignment(Align.getAsAlign());
-      return Address(GV, Align);
-    }
-    }
-  }
-
-  if (getDataSharingMode(CGM) != CGOpenMPRuntimeNVPTX::Generic)
-    return Address::invalid();
-
-  VD = VD->getCanonicalDecl();
-  auto I = FunctionGlobalizedDecls.find(CGF.CurFn);
-  if (I == FunctionGlobalizedDecls.end())
-    return Address::invalid();
-  auto VDI = I->getSecond().LocalVarData.find(VD);
-  if (VDI != I->getSecond().LocalVarData.end())
-    return VDI->second.PrivateAddr;
-  if (VD->hasAttrs()) {
-    for (specific_attr_iterator<OMPReferencedVarAttr> IT(VD->attr_begin()),
-         E(VD->attr_end());
-         IT != E; ++IT) {
-      auto VDI = I->getSecond().LocalVarData.find(
-          cast<VarDecl>(cast<DeclRefExpr>(IT->getRef())->getDecl())
-              ->getCanonicalDecl());
-      if (VDI != I->getSecond().LocalVarData.end())
-        return VDI->second.PrivateAddr;
-    }
-  }
-
-  return Address::invalid();
-}
-
-void CGOpenMPRuntimeNVPTX::functionFinished(CodeGenFunction &CGF) {
-  FunctionGlobalizedDecls.erase(CGF.CurFn);
-  CGOpenMPRuntime::functionFinished(CGF);
-}
-
-void CGOpenMPRuntimeNVPTX::getDefaultDistScheduleAndChunk(
-    CodeGenFunction &CGF, const OMPLoopDirective &S,
-    OpenMPDistScheduleClauseKind &ScheduleKind,
-    llvm::Value *&Chunk) const {
-  if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD) {
-    ScheduleKind = OMPC_DIST_SCHEDULE_static;
-    Chunk = CGF.EmitScalarConversion(getNVPTXNumThreads(CGF),
-        CGF.getContext().getIntTypeForBitwidth(32, /*Signed=*/0),
-        S.getIterationVariable()->getType(), S.getBeginLoc());
-    return;
-  }
-  CGOpenMPRuntime::getDefaultDistScheduleAndChunk(
-      CGF, S, ScheduleKind, Chunk);
-}
-
-void CGOpenMPRuntimeNVPTX::getDefaultScheduleAndChunk(
-    CodeGenFunction &CGF, const OMPLoopDirective &S,
-    OpenMPScheduleClauseKind &ScheduleKind,
-    const Expr *&ChunkExpr) const {
-  ScheduleKind = OMPC_SCHEDULE_static;
-  // Chunk size is 1 in this case.
-  llvm::APInt ChunkSize(32, 1);
-  ChunkExpr = IntegerLiteral::Create(CGF.getContext(), ChunkSize,
-      CGF.getContext().getIntTypeForBitwidth(32, /*Signed=*/0),
-      SourceLocation());
-}
-
-void CGOpenMPRuntimeNVPTX::adjustTargetSpecificDataForLambdas(
-    CodeGenFunction &CGF, const OMPExecutableDirective &D) const {
-  assert(isOpenMPTargetExecutionDirective(D.getDirectiveKind()) &&
-         " Expected target-based directive.");
-  const CapturedStmt *CS = D.getCapturedStmt(OMPD_target);
-  for (const CapturedStmt::Capture &C : CS->captures()) {
-    // Capture variables captured by reference in lambdas for target-based
-    // directives.
-    if (!C.capturesVariable())
-      continue;
-    const VarDecl *VD = C.getCapturedVar();
-    const auto *RD = VD->getType()
-                         .getCanonicalType()
-                         .getNonReferenceType()
-                         ->getAsCXXRecordDecl();
-    if (!RD || !RD->isLambda())
-      continue;
-    Address VDAddr = CGF.GetAddrOfLocalVar(VD);
-    LValue VDLVal;
-    if (VD->getType().getCanonicalType()->isReferenceType())
-      VDLVal = CGF.EmitLoadOfReferenceLValue(VDAddr, VD->getType());
-    else
-      VDLVal = CGF.MakeAddrLValue(
-          VDAddr, VD->getType().getCanonicalType().getNonReferenceType());
-    llvm::DenseMap<const VarDecl *, FieldDecl *> Captures;
-    FieldDecl *ThisCapture = nullptr;
-    RD->getCaptureFields(Captures, ThisCapture);
-    if (ThisCapture && CGF.CapturedStmtInfo->isCXXThisExprCaptured()) {
-      LValue ThisLVal =
-          CGF.EmitLValueForFieldInitialization(VDLVal, ThisCapture);
-      llvm::Value *CXXThis = CGF.LoadCXXThis();
-      CGF.EmitStoreOfScalar(CXXThis, ThisLVal);
-    }
-    for (const LambdaCapture &LC : RD->captures()) {
-      if (LC.getCaptureKind() != LCK_ByRef)
-        continue;
-      const VarDecl *VD = LC.getCapturedVar();
-      if (!CS->capturesVariable(VD))
-        continue;
-      auto It = Captures.find(VD);
-      assert(It != Captures.end() && "Found lambda capture without field.");
-      LValue VarLVal = CGF.EmitLValueForFieldInitialization(VDLVal, It->second);
-      Address VDAddr = CGF.GetAddrOfLocalVar(VD);
-      if (VD->getType().getCanonicalType()->isReferenceType())
-        VDAddr = CGF.EmitLoadOfReferenceLValue(VDAddr,
-                                               VD->getType().getCanonicalType())
-                     .getAddress(CGF);
-      CGF.EmitStoreOfScalar(VDAddr.getPointer(), VarLVal);
-    }
-  }
-}
-
-unsigned CGOpenMPRuntimeNVPTX::getDefaultFirstprivateAddressSpace() const {
-  return CGM.getContext().getTargetAddressSpace(LangAS::cuda_constant);
-}
-
-bool CGOpenMPRuntimeNVPTX::hasAllocateAttributeForGlobalVar(const VarDecl *VD,
-                                                            LangAS &AS) {
-  if (!VD || !VD->hasAttr<OMPAllocateDeclAttr>())
-    return false;
-  const auto *A = VD->getAttr<OMPAllocateDeclAttr>();
-  switch(A->getAllocatorType()) {
-  case OMPAllocateDeclAttr::OMPNullMemAlloc:
-  case OMPAllocateDeclAttr::OMPDefaultMemAlloc:
-  // Not supported, fallback to the default mem space.
-  case OMPAllocateDeclAttr::OMPThreadMemAlloc:
-  case OMPAllocateDeclAttr::OMPLargeCapMemAlloc:
-  case OMPAllocateDeclAttr::OMPCGroupMemAlloc:
-  case OMPAllocateDeclAttr::OMPHighBWMemAlloc:
-  case OMPAllocateDeclAttr::OMPLowLatMemAlloc:
-    AS = LangAS::Default;
-    return true;
-  case OMPAllocateDeclAttr::OMPConstMemAlloc:
-    AS = LangAS::cuda_constant;
-    return true;
-  case OMPAllocateDeclAttr::OMPPTeamMemAlloc:
-    AS = LangAS::cuda_shared;
-    return true;
-  case OMPAllocateDeclAttr::OMPUserDefinedMemAlloc:
-    llvm_unreachable("Expected predefined allocator for the variables with the "
-                     "static storage.");
-  }
-  return false;
-}
-
-// Get current CudaArch and ignore any unknown values
-static CudaArch getCudaArch(CodeGenModule &CGM) {
-  if (!CGM.getTarget().hasFeature("ptx"))
-    return CudaArch::UNKNOWN;
-  llvm::StringMap<bool> Features;
-  CGM.getTarget().initFeatureMap(Features, CGM.getDiags(),
-                                 CGM.getTarget().getTargetOpts().CPU,
-                                 CGM.getTarget().getTargetOpts().Features);
-  for (const auto &Feature : Features) {
-    if (Feature.getValue()) {
-      CudaArch Arch = StringToCudaArch(Feature.getKey());
-      if (Arch != CudaArch::UNKNOWN)
-        return Arch;
-    }
-  }
-  return CudaArch::UNKNOWN;
-}
-
-/// Check to see if target architecture supports unified addressing which is
-/// a restriction for OpenMP requires clause "unified_shared_memory".
-void CGOpenMPRuntimeNVPTX::processRequiresDirective(
-    const OMPRequiresDecl *D) {
-  for (const OMPClause *Clause : D->clauselists()) {
-    if (Clause->getClauseKind() == OMPC_unified_shared_memory) {
-      CudaArch Arch = getCudaArch(CGM);
-      switch (Arch) {
-      case CudaArch::SM_20:
-      case CudaArch::SM_21:
-      case CudaArch::SM_30:
-      case CudaArch::SM_32:
-      case CudaArch::SM_35:
-      case CudaArch::SM_37:
-      case CudaArch::SM_50:
-      case CudaArch::SM_52:
-      case CudaArch::SM_53:
-      case CudaArch::SM_60:
-      case CudaArch::SM_61:
-      case CudaArch::SM_62: {
-        SmallString<256> Buffer;
-        llvm::raw_svector_ostream Out(Buffer);
-        Out << "Target architecture " << CudaArchToString(Arch)
-            << " does not support unified addressing";
-        CGM.Error(Clause->getBeginLoc(), Out.str());
-        return;
-      }
-      case CudaArch::SM_70:
-      case CudaArch::SM_72:
-      case CudaArch::SM_75:
-      case CudaArch::SM_80:
-      case CudaArch::GFX600:
-      case CudaArch::GFX601:
-      case CudaArch::GFX700:
-      case CudaArch::GFX701:
-      case CudaArch::GFX702:
-      case CudaArch::GFX703:
-      case CudaArch::GFX704:
-      case CudaArch::GFX801:
-      case CudaArch::GFX802:
-      case CudaArch::GFX803:
-      case CudaArch::GFX810:
-      case CudaArch::GFX900:
-      case CudaArch::GFX902:
-      case CudaArch::GFX904:
-      case CudaArch::GFX906:
-      case CudaArch::GFX908:
-      case CudaArch::GFX909:
-      case CudaArch::GFX1010:
-      case CudaArch::GFX1011:
-      case CudaArch::GFX1012:
-      case CudaArch::GFX1030:
-      case CudaArch::UNKNOWN:
-        break;
-      case CudaArch::LAST:
-        llvm_unreachable("Unexpected Cuda arch.");
-      }
-    }
-  }
-  CGOpenMPRuntime::processRequiresDirective(D);
-}
-
-/// Get number of SMs and number of blocks per SM.
-static std::pair<unsigned, unsigned> getSMsBlocksPerSM(CodeGenModule &CGM) {
-  std::pair<unsigned, unsigned> Data;
-  if (CGM.getLangOpts().OpenMPCUDANumSMs)
-    Data.first = CGM.getLangOpts().OpenMPCUDANumSMs;
-  if (CGM.getLangOpts().OpenMPCUDABlocksPerSM)
-    Data.second = CGM.getLangOpts().OpenMPCUDABlocksPerSM;
-  if (Data.first && Data.second)
-    return Data;
-  switch (getCudaArch(CGM)) {
-  case CudaArch::SM_20:
-  case CudaArch::SM_21:
-  case CudaArch::SM_30:
-  case CudaArch::SM_32:
-  case CudaArch::SM_35:
-  case CudaArch::SM_37:
-  case CudaArch::SM_50:
-  case CudaArch::SM_52:
-  case CudaArch::SM_53:
-    return {16, 16};
-  case CudaArch::SM_60:
-  case CudaArch::SM_61:
-  case CudaArch::SM_62:
-    return {56, 32};
-  case CudaArch::SM_70:
-  case CudaArch::SM_72:
-  case CudaArch::SM_75:
-  case CudaArch::SM_80:
-    return {84, 32};
-  case CudaArch::GFX600:
-  case CudaArch::GFX601:
-  case CudaArch::GFX700:
-  case CudaArch::GFX701:
-  case CudaArch::GFX702:
-  case CudaArch::GFX703:
-  case CudaArch::GFX704:
-  case CudaArch::GFX801:
-  case CudaArch::GFX802:
-  case CudaArch::GFX803:
-  case CudaArch::GFX810:
-  case CudaArch::GFX900:
-  case CudaArch::GFX902:
-  case CudaArch::GFX904:
-  case CudaArch::GFX906:
-  case CudaArch::GFX908:
-  case CudaArch::GFX909:
-  case CudaArch::GFX1010:
-  case CudaArch::GFX1011:
-  case CudaArch::GFX1012:
-  case CudaArch::GFX1030:
-  case CudaArch::UNKNOWN:
-    break;
-  case CudaArch::LAST:
-    llvm_unreachable("Unexpected Cuda arch.");
-  }
-  llvm_unreachable("Unexpected NVPTX target without ptx feature.");
-}
-
-void CGOpenMPRuntimeNVPTX::clear() {
-  if (!GlobalizedRecords.empty() &&
-      !CGM.getLangOpts().OpenMPCUDATargetParallel) {
-    ASTContext &C = CGM.getContext();
-    llvm::SmallVector<const GlobalPtrSizeRecsTy *, 4> GlobalRecs;
-    llvm::SmallVector<const GlobalPtrSizeRecsTy *, 4> SharedRecs;
-    RecordDecl *StaticRD = C.buildImplicitRecord(
-        "_openmp_static_memory_type_$_", RecordDecl::TagKind::TTK_Union);
-    StaticRD->startDefinition();
-    RecordDecl *SharedStaticRD = C.buildImplicitRecord(
-        "_shared_openmp_static_memory_type_$_", RecordDecl::TagKind::TTK_Union);
-    SharedStaticRD->startDefinition();
-    for (const GlobalPtrSizeRecsTy &Records : GlobalizedRecords) {
-      if (Records.Records.empty())
-        continue;
-      unsigned Size = 0;
-      unsigned RecAlignment = 0;
-      for (const RecordDecl *RD : Records.Records) {
-        QualType RDTy = C.getRecordType(RD);
-        unsigned Alignment = C.getTypeAlignInChars(RDTy).getQuantity();
-        RecAlignment = std::max(RecAlignment, Alignment);
-        unsigned RecSize = C.getTypeSizeInChars(RDTy).getQuantity();
-        Size =
-            llvm::alignTo(llvm::alignTo(Size, Alignment) + RecSize, Alignment);
-      }
-      Size = llvm::alignTo(Size, RecAlignment);
-      llvm::APInt ArySize(/*numBits=*/64, Size);
-      QualType SubTy = C.getConstantArrayType(
-          C.CharTy, ArySize, nullptr, ArrayType::Normal, /*IndexTypeQuals=*/0);
-      const bool UseSharedMemory = Size <= SharedMemorySize;
-      auto *Field =
-          FieldDecl::Create(C, UseSharedMemory ? SharedStaticRD : StaticRD,
-                            SourceLocation(), SourceLocation(), nullptr, SubTy,
-                            C.getTrivialTypeSourceInfo(SubTy, SourceLocation()),
-                            /*BW=*/nullptr, /*Mutable=*/false,
-                            /*InitStyle=*/ICIS_NoInit);
-      Field->setAccess(AS_public);
-      if (UseSharedMemory) {
-        SharedStaticRD->addDecl(Field);
-        SharedRecs.push_back(&Records);
-      } else {
-        StaticRD->addDecl(Field);
-        GlobalRecs.push_back(&Records);
-      }
-      Records.RecSize->setInitializer(llvm::ConstantInt::get(CGM.SizeTy, Size));
-      Records.UseSharedMemory->setInitializer(
-          llvm::ConstantInt::get(CGM.Int16Ty, UseSharedMemory ? 1 : 0));
-    }
-    // Allocate SharedMemorySize buffer for the shared memory.
-    // FIXME: nvlink does not handle weak linkage correctly (object with the
-    // different size are reported as erroneous).
-    // Restore this code as sson as nvlink is fixed.
-    if (!SharedStaticRD->field_empty()) {
-      llvm::APInt ArySize(/*numBits=*/64, SharedMemorySize);
-      QualType SubTy = C.getConstantArrayType(
-          C.CharTy, ArySize, nullptr, ArrayType::Normal, /*IndexTypeQuals=*/0);
-      auto *Field = FieldDecl::Create(
-          C, SharedStaticRD, SourceLocation(), SourceLocation(), nullptr, SubTy,
-          C.getTrivialTypeSourceInfo(SubTy, SourceLocation()),
-          /*BW=*/nullptr, /*Mutable=*/false,
-          /*InitStyle=*/ICIS_NoInit);
-      Field->setAccess(AS_public);
-      SharedStaticRD->addDecl(Field);
-    }
-    SharedStaticRD->completeDefinition();
-    if (!SharedStaticRD->field_empty()) {
-      QualType StaticTy = C.getRecordType(SharedStaticRD);
-      llvm::Type *LLVMStaticTy = CGM.getTypes().ConvertTypeForMem(StaticTy);
-      auto *GV = new llvm::GlobalVariable(
-          CGM.getModule(), LLVMStaticTy,
-          /*isConstant=*/false, llvm::GlobalValue::CommonLinkage,
-          llvm::Constant::getNullValue(LLVMStaticTy),
-          "_openmp_shared_static_glob_rd_$_", /*InsertBefore=*/nullptr,
-          llvm::GlobalValue::NotThreadLocal,
-          C.getTargetAddressSpace(LangAS::cuda_shared));
-      auto *Replacement = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
-          GV, CGM.VoidPtrTy);
-      for (const GlobalPtrSizeRecsTy *Rec : SharedRecs) {
-        Rec->Buffer->replaceAllUsesWith(Replacement);
-        Rec->Buffer->eraseFromParent();
-      }
-    }
-    StaticRD->completeDefinition();
-    if (!StaticRD->field_empty()) {
-      QualType StaticTy = C.getRecordType(StaticRD);
-      std::pair<unsigned, unsigned> SMsBlockPerSM = getSMsBlocksPerSM(CGM);
-      llvm::APInt Size1(32, SMsBlockPerSM.second);
-      QualType Arr1Ty =
-          C.getConstantArrayType(StaticTy, Size1, nullptr, ArrayType::Normal,
-                                 /*IndexTypeQuals=*/0);
-      llvm::APInt Size2(32, SMsBlockPerSM.first);
-      QualType Arr2Ty =
-          C.getConstantArrayType(Arr1Ty, Size2, nullptr, ArrayType::Normal,
-                                 /*IndexTypeQuals=*/0);
-      llvm::Type *LLVMArr2Ty = CGM.getTypes().ConvertTypeForMem(Arr2Ty);
-      // FIXME: nvlink does not handle weak linkage correctly (object with the
-      // different size are reported as erroneous).
-      // Restore CommonLinkage as soon as nvlink is fixed.
-      auto *GV = new llvm::GlobalVariable(
-          CGM.getModule(), LLVMArr2Ty,
-          /*isConstant=*/false, llvm::GlobalValue::InternalLinkage,
-          llvm::Constant::getNullValue(LLVMArr2Ty),
-          "_openmp_static_glob_rd_$_");
-      auto *Replacement = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
-          GV, CGM.VoidPtrTy);
-      for (const GlobalPtrSizeRecsTy *Rec : GlobalRecs) {
-        Rec->Buffer->replaceAllUsesWith(Replacement);
-        Rec->Buffer->eraseFromParent();
-      }
-    }
-  }
-  if (!TeamsReductions.empty()) {
-    ASTContext &C = CGM.getContext();
-    RecordDecl *StaticRD = C.buildImplicitRecord(
-        "_openmp_teams_reduction_type_$_", RecordDecl::TagKind::TTK_Union);
-    StaticRD->startDefinition();
-    for (const RecordDecl *TeamReductionRec : TeamsReductions) {
-      QualType RecTy = C.getRecordType(TeamReductionRec);
-      auto *Field = FieldDecl::Create(
-          C, StaticRD, SourceLocation(), SourceLocation(), nullptr, RecTy,
-          C.getTrivialTypeSourceInfo(RecTy, SourceLocation()),
-          /*BW=*/nullptr, /*Mutable=*/false,
-          /*InitStyle=*/ICIS_NoInit);
-      Field->setAccess(AS_public);
-      StaticRD->addDecl(Field);
-    }
-    StaticRD->completeDefinition();
-    QualType StaticTy = C.getRecordType(StaticRD);
-    llvm::Type *LLVMReductionsBufferTy =
-        CGM.getTypes().ConvertTypeForMem(StaticTy);
-    // FIXME: nvlink does not handle weak linkage correctly (object with the
-    // different size are reported as erroneous).
-    // Restore CommonLinkage as soon as nvlink is fixed.
-    auto *GV = new llvm::GlobalVariable(
-        CGM.getModule(), LLVMReductionsBufferTy,
-        /*isConstant=*/false, llvm::GlobalValue::InternalLinkage,
-        llvm::Constant::getNullValue(LLVMReductionsBufferTy),
-        "_openmp_teams_reductions_buffer_$_");
-    KernelTeamsReductionPtr->setInitializer(
-        llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(GV,
-                                                             CGM.VoidPtrTy));
-  }
-  CGOpenMPRuntime::clear();
-}

clang/lib/CodeGen/CMakeLists.txt

add_clang_library(clangCodeGen
   CGLoopInfo.cpp
   CGNonTrivialStruct.cpp
   CGObjC.cpp
   CGObjCGNU.cpp
   CGObjCMac.cpp
   CGObjCRuntime.cpp
   CGOpenCLRuntime.cpp
   CGOpenMPRuntime.cpp
+  CGOpenMPRuntimeGPU.cpp
   CGOpenMPRuntimeNVPTX.cpp
   CGRecordLayoutBuilder.cpp
   CGStmt.cpp
   CGStmtOpenMP.cpp
   CGVTT.cpp
   CGVTables.cpp
   CodeGenABITypes.cpp
   CodeGenAction.cpp