OMPIRBuilder for Interop directive

[sriharikrishna]

Summary

Implements the OMPIRBuilder portion for the
Interop directive.

[jdoerfert]

There are 3 clang tidy warnings to address. Overall this is a good first step. @ABataev @mikerice is there any major problem with this? If not we should try to get it in asap and improve it in tree.

llvm/include/llvm/Frontend/OpenMP/OMPConstants.h

136

move into the omp namespace and add doxygen documentation.

llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h

797

Also elsewhere.

llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp

2192

Also similarly elsewhere.

2194

2264

Remove all the llvm:: in this file.

[ABataev]

clang/lib/CodeGen/CGStmtOpenMP.cpp

6310–6311

This code can be removed.

6328

bool

6329

hasClausesOfKind should be better

6334

EmitLValue(C->getInteropVar()).getPointer(*this);.

6344–6345

EmitLValue(C->getInteropVar()).getPointer(*this);.

6350–6351

EmitLValue(C->getInteropVar()).getPointer(*this);.

6355–6358

Is this allowed at all? If not, better to turn it into an assert.

clang/test/OpenMP/interop_irbuilder.cpp

2

Actual codegen checks are missing

[sriharikrishna]

Address reviewer comments

[ABataev]

clang/lib/CodeGen/CGStmtOpenMP.cpp

6302–6357

Could you merge these asserts and put them as preconditions for the if-else chain somehow?

clang/test/OpenMP/interop_irbuilder.cpp

2

Still no checks, need to add | FileCheck %s to the RUN line

[sriharikrishna]

OMPIRBuilder for Interop directive

[jdoerfert]

you need to squash your commits locally and update this revision with a single commit/diff.

clang/lib/CodeGen/CGStmtOpenMP.cpp

6302–6357

This is not how assertions work.

assert(EXPR && "MESSAGE");

[sriharikrishna]

OMPIRBuilder for Interop directive. Squashed commit

[sriharikrishna]

OMPIRBuilder for Interop directive. Squashed commit

[ABataev]

clang/lib/CodeGen/CGStmtOpenMP.cpp

6330–6331

This code is common for all if-else braches, move out of the conditional blocks?

6335–6336

Can we have anything else rather than C->getIsTargetSync() here? If no, then it should look like this:

if (C->getIsTarget()) {
  InteropType = llvm::omp::OMPInteropType::Target;
} else {
  assert(C->getIsTargetSync() && "Expected ...");
  InteropType = llvm::omp::OMPInteropType::TargetSync;
}

[sriharikrishna]

clang/lib/CodeGen/CGStmtOpenMP.cpp

6330–6331

Moving the common line out will require checking the kind of clause in the directive. So, I prefer to leave it as is.

6335–6336

The standard only allows for Target and TargetSync.

[sriharikrishna]

OMPIRBuilder for Interop directive

[sriharikrishna]

OMPIRBuilder for Interop directive

[jdoerfert]

LGTM,

please rebase on top of trunk and use ConstantInt::get(Int32, 0) instead of the APInt way.

[sriharikrishna]

OMPIRBuilder for Interop directive

[tianshilei1992]

rebase

clang/lib/CodeGen/CGStmt.cpp

case Stmt::OMPTargetTeamsDistributeParallelForSimdDirectiveClass:
     EmitOMPTargetTeamsDistributeParallelForSimdDirective(
         cast<OMPTargetTeamsDistributeParallelForSimdDirective>(*S));
     break;
   case Stmt::OMPTargetTeamsDistributeSimdDirectiveClass:
     EmitOMPTargetTeamsDistributeSimdDirective(
         cast<OMPTargetTeamsDistributeSimdDirective>(*S));
     break;
   case Stmt::OMPInteropDirectiveClass:
-    llvm_unreachable("Interop directive not supported yet.");
+    EmitOMPInteropDirective(cast<OMPInteropDirective>(*S));
     break;
   case Stmt::OMPDispatchDirectiveClass:
     llvm_unreachable("Dispatch directive not supported yet.");
     break;
   case Stmt::OMPMaskedDirectiveClass:
     EmitOMPMaskedDirective(cast<OMPMaskedDirective>(*S));
     break;
   }

clang/lib/CodeGen/CGStmtOpenMP.cpp

CGF.CGM.getOpenMPRuntime().emitInlinedDirective(
         CGF, OMPD_distribute, CodeGenDistribute, /*HasCancel=*/false);
     CGF.EmitOMPReductionClauseFinal(S, /*ReductionKind=*/OMPD_teams);
   };
   emitCommonOMPTeamsDirective(*this, S, OMPD_distribute_parallel_for_simd,
                               CodeGen);
   emitPostUpdateForReductionClause(*this, S,
                                    [](CodeGenFunction &) { return nullptr; });
 }
 
+void CodeGenFunction::EmitOMPInteropDirective(const OMPInteropDirective &S) {
+  llvm::OpenMPIRBuilder &OMPBuilder = CGM.getOpenMPRuntime().getOMPBuilder();
+  llvm::Value *Device = nullptr;
+  if (const auto *C = S.getSingleClause<OMPDeviceClause>())
+    Device = EmitScalarExpr(C->getDevice());
+
+  llvm::Value *NumDependences = nullptr;
+  llvm::Value *DependenceAddress = nullptr;
+  if (const auto *DC = S.getSingleClause<OMPDependClause>()) {
+    OMPTaskDataTy::DependData Dependencies(DC->getDependencyKind(),
+                                           DC->getModifier());
+    Dependencies.DepExprs.append(DC->varlist_begin(), DC->varlist_end());
+    std::pair<llvm::Value *, Address> DependencePair =
+        CGM.getOpenMPRuntime().emitDependClause(*this, Dependencies,
+                                                DC->getBeginLoc());
+    NumDependences = DependencePair.first;
+    DependenceAddress = Builder.CreatePointerCast(
+        DependencePair.second.getPointer(), CGM.Int8PtrTy);
+  }
+
+  assert (!(S.hasClausesOfKind<OMPNowaitClause>() &&
+      !(S.getSingleClause<OMPInitClause>() ||
+        S.getSingleClause<OMPDestroyClause>() ||
+        S.getSingleClause<OMPUseClause>())) &&
+        "OMPNowaitClause clause is used separately in OMPInteropDirective.");
+
+  if (const auto *C = S.getSingleClause<OMPInitClause>()) {
+    llvm::Value *InteropvarPtr =
+        EmitLValue(C->getInteropVar()).getPointer(*this);
+    llvm::omp::OMPInteropType InteropType = llvm::omp::OMPInteropType::Unknown;
+    if (C->getIsTarget()) {
+      InteropType = llvm::omp::OMPInteropType::Target;
+    } else {
+      assert(C->getIsTargetSync() && "Expected interop-type target/targetsync");
+      InteropType = llvm::omp::OMPInteropType::TargetSync;
+    }
+    OMPBuilder.createOMPInteropInit(Builder, InteropvarPtr, InteropType, Device,
+                                    NumDependences, DependenceAddress,
+                                    S.hasClausesOfKind<OMPNowaitClause>());
+  } else if (const auto *C = S.getSingleClause<OMPDestroyClause>()) {
+    llvm::Value *InteropvarPtr =
+        EmitLValue(C->getInteropVar()).getPointer(*this);
+    OMPBuilder.createOMPInteropDestroy(Builder, InteropvarPtr, Device,
+                                       NumDependences, DependenceAddress,
+                                       S.hasClausesOfKind<OMPNowaitClause>());
+  } else if (const auto *C = S.getSingleClause<OMPUseClause>()) {
+    llvm::Value *InteropvarPtr =
+        EmitLValue(C->getInteropVar()).getPointer(*this);
+    OMPBuilder.createOMPInteropUse(Builder, InteropvarPtr, Device,
+                                   NumDependences, DependenceAddress,
+                                   S.hasClausesOfKind<OMPNowaitClause>());
+  }
+}
+
 static void emitTargetTeamsDistributeParallelForRegion(
     CodeGenFunction &CGF, const OMPTargetTeamsDistributeParallelForDirective &S,
     PrePostActionTy &Action) {
   Action.Enter(CGF);
   auto &&CodeGenDistribute = [&S](CodeGenFunction &CGF, PrePostActionTy &) {
     CGF.EmitOMPDistributeLoop(S, emitInnerParallelForWhenCombined,
                               S.getDistInc());
   };
 
   // Emit teams region as a standalone region.

clang/lib/CodeGen/CodeGenFunction.h

   void EmitOMPTargetTeamsDistributeDirective(
       const OMPTargetTeamsDistributeDirective &S);
   void EmitOMPTargetTeamsDistributeParallelForDirective(
       const OMPTargetTeamsDistributeParallelForDirective &S);
   void EmitOMPTargetTeamsDistributeParallelForSimdDirective(
       const OMPTargetTeamsDistributeParallelForSimdDirective &S);
   void EmitOMPTargetTeamsDistributeSimdDirective(
       const OMPTargetTeamsDistributeSimdDirective &S);
+  void EmitOMPInteropDirective(const OMPInteropDirective &S);
 
   /// Emit device code for the target directive.
   static void EmitOMPTargetDeviceFunction(CodeGenModule &CGM,
                                           StringRef ParentName,
                                           const OMPTargetDirective &S);
   static void
   EmitOMPTargetParallelDeviceFunction(CodeGenModule &CGM, StringRef ParentName,
                                       const OMPTargetParallelDirective &S);

clang/test/OpenMP/interop_irbuilder.cpp

+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --include-generated-funcs
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm %s -o - | FileCheck %s
+
+// expected-no-diagnostics
+typedef void *omp_interop_t;
+
+void test1() {
+
+  int device_id = 4;
+  int D0, D1;
+  omp_interop_t interop;
+
+  #pragma omp interop init(target: interop)
+
+  #pragma omp interop init(targetsync: interop)
+
+  #pragma omp interop init(target: interop) device(device_id)
+
+  #pragma omp interop init(targetsync: interop) device(device_id)
+
+  #pragma omp interop use(interop) depend(in:D0, D1) nowait
+
+  #pragma omp interop destroy(interop) depend(in:D0, D1)
+}
+
+// CHECK-LABEL: @_Z5test1v(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[DEVICE_ID:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[D0:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[D1:%.*]] = alloca i32, align 4
+// CHECK-NEXT:    [[INTEROP:%.*]] = alloca i8*, align 8
+// CHECK-NEXT:    [[DOTDEP_ARR_ADDR:%.*]] = alloca [2 x %struct.kmp_depend_info], align 8
+// CHECK-NEXT:    [[DEP_COUNTER_ADDR:%.*]] = alloca i64, align 8
+// CHECK-NEXT:    [[DOTDEP_ARR_ADDR5:%.*]] = alloca [2 x %struct.kmp_depend_info], align 8
+// CHECK-NEXT:    [[DEP_COUNTER_ADDR6:%.*]] = alloca i64, align 8
+// CHECK-NEXT:    store i32 4, i32* [[DEVICE_ID]], align 4
+// CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1:[0-9]+]])
+// CHECK-NEXT:    call void @__tgt_interop_init(%struct.ident_t* @[[GLOB1]], i32 [[OMP_GLOBAL_THREAD_NUM]], i8** [[INTEROP]], i64 1, i32 -1, i32 0, i8* null, i32 0)
+// CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM1:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]])
+// CHECK-NEXT:    call void @__tgt_interop_init(%struct.ident_t* @[[GLOB1]], i32 [[OMP_GLOBAL_THREAD_NUM1]], i8** [[INTEROP]], i64 2, i32 -1, i32 0, i8* null, i32 0)
+// CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[DEVICE_ID]], align 4
+// CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM2:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]])
+// CHECK-NEXT:    call void @__tgt_interop_init(%struct.ident_t* @[[GLOB1]], i32 [[OMP_GLOBAL_THREAD_NUM2]], i8** [[INTEROP]], i64 1, i32 [[TMP0]], i32 0, i8* null, i32 0)
+// CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[DEVICE_ID]], align 4
+// CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM3:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]])
+// CHECK-NEXT:    call void @__tgt_interop_init(%struct.ident_t* @[[GLOB1]], i32 [[OMP_GLOBAL_THREAD_NUM3]], i8** [[INTEROP]], i64 2, i32 [[TMP1]], i32 0, i8* null, i32 0)
+// CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds [2 x %struct.kmp_depend_info], [2 x %struct.kmp_depend_info]* [[DOTDEP_ARR_ADDR]], i64 0, i64 0
+// CHECK-NEXT:    [[TMP3:%.*]] = getelementptr [[STRUCT_KMP_DEPEND_INFO:%.*]], %struct.kmp_depend_info* [[TMP2]], i64 0
+// CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP3]], i32 0, i32 0
+// CHECK-NEXT:    [[TMP5:%.*]] = ptrtoint i32* [[D0]] to i64
+// CHECK-NEXT:    store i64 [[TMP5]], i64* [[TMP4]], align 8
+// CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP3]], i32 0, i32 1
+// CHECK-NEXT:    store i64 4, i64* [[TMP6]], align 8
+// CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP3]], i32 0, i32 2
+// CHECK-NEXT:    store i8 1, i8* [[TMP7]], align 8
+// CHECK-NEXT:    [[TMP8:%.*]] = getelementptr [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP2]], i64 1
+// CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP8]], i32 0, i32 0
+// CHECK-NEXT:    [[TMP10:%.*]] = ptrtoint i32* [[D1]] to i64
+// CHECK-NEXT:    store i64 [[TMP10]], i64* [[TMP9]], align 8
+// CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP8]], i32 0, i32 1
+// CHECK-NEXT:    store i64 4, i64* [[TMP11]], align 8
+// CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP8]], i32 0, i32 2
+// CHECK-NEXT:    store i8 1, i8* [[TMP12]], align 8
+// CHECK-NEXT:    store i64 2, i64* [[DEP_COUNTER_ADDR]], align 8
+// CHECK-NEXT:    [[TMP13:%.*]] = bitcast %struct.kmp_depend_info* [[TMP2]] to i8*
+// CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM4:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]])
+// CHECK-NEXT:    call void @__tgt_interop_use(%struct.ident_t* @[[GLOB1]], i32 [[OMP_GLOBAL_THREAD_NUM4]], i8** [[INTEROP]], i32 -1, i32 2, i8* [[TMP13]], i32 1)
+// CHECK-NEXT:    [[TMP14:%.*]] = getelementptr inbounds [2 x %struct.kmp_depend_info], [2 x %struct.kmp_depend_info]* [[DOTDEP_ARR_ADDR5]], i64 0, i64 0
+// CHECK-NEXT:    [[TMP15:%.*]] = getelementptr [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP14]], i64 0
+// CHECK-NEXT:    [[TMP16:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP15]], i32 0, i32 0
+// CHECK-NEXT:    [[TMP17:%.*]] = ptrtoint i32* [[D0]] to i64
+// CHECK-NEXT:    store i64 [[TMP17]], i64* [[TMP16]], align 8
+// CHECK-NEXT:    [[TMP18:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP15]], i32 0, i32 1
+// CHECK-NEXT:    store i64 4, i64* [[TMP18]], align 8
+// CHECK-NEXT:    [[TMP19:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP15]], i32 0, i32 2
+// CHECK-NEXT:    store i8 1, i8* [[TMP19]], align 8
+// CHECK-NEXT:    [[TMP20:%.*]] = getelementptr [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP14]], i64 1
+// CHECK-NEXT:    [[TMP21:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP20]], i32 0, i32 0
+// CHECK-NEXT:    [[TMP22:%.*]] = ptrtoint i32* [[D1]] to i64
+// CHECK-NEXT:    store i64 [[TMP22]], i64* [[TMP21]], align 8
+// CHECK-NEXT:    [[TMP23:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP20]], i32 0, i32 1
+// CHECK-NEXT:    store i64 4, i64* [[TMP23]], align 8
+// CHECK-NEXT:    [[TMP24:%.*]] = getelementptr inbounds [[STRUCT_KMP_DEPEND_INFO]], %struct.kmp_depend_info* [[TMP20]], i32 0, i32 2
+// CHECK-NEXT:    store i8 1, i8* [[TMP24]], align 8
+// CHECK-NEXT:    store i64 2, i64* [[DEP_COUNTER_ADDR6]], align 8
+// CHECK-NEXT:    [[TMP25:%.*]] = bitcast %struct.kmp_depend_info* [[TMP14]] to i8*
+// CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM7:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @[[GLOB1]])
+// CHECK-NEXT:    call void @__tgt_interop_destroy(%struct.ident_t* @[[GLOB1]], i32 [[OMP_GLOBAL_THREAD_NUM7]], i8** [[INTEROP]], i32 -1, i32 2, i8* [[TMP25]], i32 0)
+// CHECK-NEXT:    ret void
+//

llvm/include/llvm/Frontend/OpenMP/OMPConstants.h

enum class OMPScheduleType {
   ModifierMonotonic =
       (1 << 29), // Set if the monotonic schedule modifier was present
   ModifierNonmonotonic =
       (1 << 30), // Set if the nonmonotonic schedule modifier was present
   ModifierMask = ModifierMonotonic | ModifierNonmonotonic,
   LLVM_MARK_AS_BITMASK_ENUM(/* LargestValue */ ModifierMask)
 };
 
+/// \note This needs to be kept in sync with interop.h enum kmp_interop_type_t.:
+enum class OMPInteropType { Unknown, Target, TargetSync };
+
 } // end namespace omp
 
 } // end namespace llvm
 
 #endif // LLVM_FRONTEND_OPENMP_OMPCONSTANTS_H

llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h

public:
   /// \param Name Name of call Instruction for callinst
   ///
   /// \returns CallInst to the thread private cache call.
   CallInst *createCachedThreadPrivate(const LocationDescription &Loc,
                                       llvm::Value *Pointer,
                                       llvm::ConstantInt *Size,
                                       const llvm::Twine &Name = Twine(""));
 
+  /// Create a runtime call for kmpc_interop_init
+  ///
+  /// \param Loc The insert and source location description.
+  /// \param InteropVar variable to be allocated
+  /// \param InteropType type of interop operation
+  /// \param Device devide to which offloading will occur
+  /// \param NumDependences  number of dependence variables
+  /// \param DependenceAddress pointer to dependence variables
+  /// \param HaveNowaitClause does nowait clause exist
+  ///
+  /// \returns CallInst to the kmpc_interop_init call
+  CallInst *
+  createOMPInteropInit(const LocationDescription &Loc, Value *InteropVar,
+                       omp::OMPInteropType InteropType, Value *Device,
+                       Value *NumDependences,
+                       Value *DependenceAddress, bool HaveNowaitClause);
+
+  /// Create a runtime call for kmpc_interop_destroy
+  ///
+  /// \param Loc The insert and source location description.
+  /// \param InteropVar variable to be allocated
+  /// \param Device devide to which offloading will occur
+  /// \param NumDependences  number of dependence variables
+  /// \param DependenceAddress pointer to dependence variables
+  /// \param HaveNowaitClause does nowait clause exist
+  ///
+  /// \returns CallInst to the kmpc_interop_destroy call
+  CallInst *createOMPInteropDestroy(const LocationDescription &Loc,
+                                    Value *InteropVar,
+                                    Value *Device,
+                                    Value *NumDependences,
+                                    Value *DependenceAddress,
+                                    bool HaveNowaitClause);
+
+  /// Create a runtime call for kmpc_interop_use
+  ///
+  /// \param Loc The insert and source location description.
+  /// \param InteropVar variable to be allocated
+  /// \param Device devide to which offloading will occur
+  /// \param NumDependences  number of dependence variables
+  /// \param DependenceAddress pointer to dependence variables
+  /// \param HaveNowaitClause does nowait clause exist
+  ///
+  /// \returns CallInst to the kmpc_interop_use call
+  CallInst *createOMPInteropUse(const LocationDescription &Loc,
+                                Value *InteropVar, Value *Device,
+                                Value *NumDependences,
+                                Value *DependenceAddress,
+                                bool HaveNowaitClause);
+
+  /// Declarations for LLVM-IR types (simple, array, function and structure) are
   /// The `omp target` interface
   ///
   /// For more information about the usage of this interface,
   /// \see openmp/libomptarget/deviceRTLs/common/include/target.h
   ///
   ///{
 
   /// Create a runtime call for kmpc_target_init

llvm/include/llvm/Frontend/OpenMP/OMPKinds.def

__OMP_RTL(__kmpc_doacross_init, false, Void, IdentPtr, Int32, Int32,
           /* kmp_dim */ VoidPtr)
 __OMP_RTL(__kmpc_doacross_post, false, Void, IdentPtr, Int32, Int64Ptr)
 __OMP_RTL(__kmpc_doacross_wait, false, Void, IdentPtr, Int32, Int64Ptr)
 __OMP_RTL(__kmpc_doacross_fini, false, Void, IdentPtr, Int32)
 
 __OMP_RTL(__kmpc_alloc, false, VoidPtr, /* Int */ Int32, SizeTy, VoidPtr)
 __OMP_RTL(__kmpc_free, false, Void, /* Int */ Int32, VoidPtr, VoidPtr)
 
+__OMP_RTL(__tgt_interop_init, false, Void, IdentPtr, Int32, VoidPtrPtr, 
+          Int64, Int32, Int32, VoidPtr, Int32)
+
+__OMP_RTL(__tgt_interop_destroy, false, Void, IdentPtr, Int32, VoidPtrPtr, 
+          Int32, Int32, VoidPtr, Int32)
+
+__OMP_RTL(__tgt_interop_use, false, Void, IdentPtr, Int32, VoidPtrPtr, 
+          Int32, Int32, VoidPtr, Int32)
+
 __OMP_RTL(__kmpc_init_allocator, false, /* omp_allocator_handle_t */ VoidPtr,
           /* Int */ Int32, /* omp_memespace_handle_t */ VoidPtr,
           /* Int */ Int32, /* omp_alloctrait_t */ VoidPtr)
 __OMP_RTL(__kmpc_destroy_allocator, false, Void, /* Int */ Int32,
           /* omp_allocator_handle_t */ VoidPtr)
 
 __OMP_RTL(__kmpc_push_target_tripcount_mapper, false, Void, IdentPtr, Int64, Int64)
 __OMP_RTL(__tgt_target_mapper, false, Int32, IdentPtr, Int64, VoidPtr, Int32, VoidPtrPtr,

llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp

CallInst *OpenMPIRBuilder::createOMPFree(const LocationDescription &Loc,
   Constant *SrcLocStr = getOrCreateSrcLocStr(Loc);
   Value *Ident = getOrCreateIdent(SrcLocStr);
   Value *ThreadId = getOrCreateThreadID(Ident);
   Value *Args[] = {ThreadId, Addr, Allocator};
   Function *Fn = getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_free);
   return Builder.CreateCall(Fn, Args, Name);
 }
 
+CallInst *OpenMPIRBuilder::createOMPInteropInit(const LocationDescription &Loc,
+                                                Value *InteropVar,
+                                                omp::OMPInteropType InteropType,
+                                                Value *Device,
+                                                Value *NumDependences,
+                                                Value *DependenceAddress,
+                                                bool HaveNowaitClause) {
+  IRBuilder<>::InsertPointGuard IPG(Builder);
+  Builder.restoreIP(Loc.IP);
+
+  Constant *SrcLocStr = getOrCreateSrcLocStr(Loc);
+  Value *Ident = getOrCreateIdent(SrcLocStr);
+  Value *ThreadId = getOrCreateThreadID(Ident);
+  if (Device == NULL)
+    Device = ConstantInt::get(M.getContext(), APInt(32, -1, true));
+  Constant *InteropTypeVal =
+      ConstantInt::get(Int64, (int)InteropType);
+  if (NumDependences == nullptr) {
+    NumDependences = ConstantInt::get(Int32, 0);
+    PointerType *PointerTypeVar = Type::getInt8PtrTy(M.getContext());
+    DependenceAddress = ConstantPointerNull::get(PointerTypeVar);
+  }
+  Value *HaveNowaitClauseVal =
+      ConstantInt::get(M.getContext(), APInt(32, HaveNowaitClause, true));
+  Value *Args[] = {
+      Ident,  ThreadId,       InteropVar,        InteropTypeVal,
+      Device, NumDependences, DependenceAddress, HaveNowaitClauseVal};
+
+  Function *Fn = getOrCreateRuntimeFunctionPtr(OMPRTL___tgt_interop_init);
+
+  return Builder.CreateCall(Fn, Args);
+}
+
+CallInst *OpenMPIRBuilder::createOMPInteropDestroy(
+    const LocationDescription &Loc, Value *InteropVar, Value *Device,
+    Value *NumDependences, Value *DependenceAddress,
+    bool HaveNowaitClause) {
+  IRBuilder<>::InsertPointGuard IPG(Builder);
+  Builder.restoreIP(Loc.IP);
+
+  Constant *SrcLocStr = getOrCreateSrcLocStr(Loc);
+  Value *Ident = getOrCreateIdent(SrcLocStr);
+  Value *ThreadId = getOrCreateThreadID(Ident);
+  if (Device == NULL)
+    Device = ConstantInt::get(M.getContext(), APInt(32, -1, true));
+  if (NumDependences == nullptr) {
+    NumDependences = ConstantInt::get(Int32, 0);
+    PointerType *PointerTypeVar = Type::getInt8PtrTy(M.getContext());
+    DependenceAddress = ConstantPointerNull::get(PointerTypeVar);
+  }
+  Value *HaveNowaitClauseVal =
+      ConstantInt::get(M.getContext(), APInt(32, HaveNowaitClause, true));
+  Value *Args[] = {
+      Ident,          ThreadId,          InteropVar,         Device,
+      NumDependences, DependenceAddress, HaveNowaitClauseVal};
+
+  Function *Fn = getOrCreateRuntimeFunctionPtr(OMPRTL___tgt_interop_destroy);
+
+  return Builder.CreateCall(Fn, Args);
+}
+
+CallInst *OpenMPIRBuilder::createOMPInteropUse(const LocationDescription &Loc,
+                                               Value *InteropVar,
+                                               Value *Device,
+                                               Value *NumDependences,
+                                               Value *DependenceAddress,
+                                               bool HaveNowaitClause) {
+  IRBuilder<>::InsertPointGuard IPG(Builder);
+  Builder.restoreIP(Loc.IP);
+  Constant *SrcLocStr = getOrCreateSrcLocStr(Loc);
+  Value *Ident = getOrCreateIdent(SrcLocStr);
+  Value *ThreadId = getOrCreateThreadID(Ident);
+  if (Device == NULL)
+    Device = ConstantInt::get(M.getContext(), APInt(32, -1, true));
+  if (NumDependences == nullptr) {
+    NumDependences = ConstantInt::get(Int32, 0);
+    PointerType *PointerTypeVar = Type::getInt8PtrTy(M.getContext());
+    DependenceAddress = ConstantPointerNull::get(PointerTypeVar);
+  }
+  Value *HaveNowaitClauseVal =
+      ConstantInt::get(M.getContext(), APInt(32, HaveNowaitClause, true));
+  Value *Args[] = {
+      Ident,          ThreadId,          InteropVar,         Device,
+      NumDependences, DependenceAddress, HaveNowaitClauseVal};
+
+  Function *Fn = getOrCreateRuntimeFunctionPtr(OMPRTL___tgt_interop_use);
+
+  return Builder.CreateCall(Fn, Args);
+}
+
 CallInst *OpenMPIRBuilder::createCachedThreadPrivate(
     const LocationDescription &Loc, llvm::Value *Pointer,
     llvm::ConstantInt *Size, const llvm::Twine &Name) {
   IRBuilder<>::InsertPointGuard IPG(Builder);
   Builder.restoreIP(Loc.IP);
 
   Constant *SrcLocStr = getOrCreateSrcLocStr(Loc);
   Value *Ident = getOrCreateIdent(SrcLocStr);