diff --git a/openmp/libomptarget/deviceRTLs/amdgcn/CMakeLists.txt b/openmp/libomptarget/deviceRTLs/amdgcn/CMakeLists.txt
--- a/openmp/libomptarget/deviceRTLs/amdgcn/CMakeLists.txt
+++ b/openmp/libomptarget/deviceRTLs/amdgcn/CMakeLists.txt
@@ -100,14 +100,18 @@
 macro(add_cuda_bc_library)
   set(cu_cmd ${AOMP_BINDIR}/clang++
     -std=c++14
-    -fcuda-rdc
+    -xc++
+    -c
     -fvisibility=default
     --cuda-device-only
+    -fopenmp-cuda-mode # skip data sharing prologue on device functions
     -Wno-unused-value
-    -x hip
-    -nogpulib -nogpuinc
+    -nogpulib
+    -D__AMDGCN__ # Code uses this to distinguish vs nvptx
+    -target x86_64-pc-linux-gnu -fopenmp
+    -fopenmp-targets=amdgcn-amd-amdhsa
+    -Xopenmp-target=amdgcn-amd-amdhsa -march=${mcpu}
     -O${optimization_level}
-    --cuda-gpu-arch=${mcpu}
     ${CUDA_DEBUG}
     -I${CMAKE_CURRENT_SOURCE_DIR}/src
     -I${devicertl_base_directory})
diff --git a/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_intrinsics.h b/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_intrinsics.h
new file mode 100644
--- /dev/null
+++ b/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_intrinsics.h
@@ -0,0 +1,48 @@
+//===--- amdgcn_intrinsics.h - Intrinsics used by deviceRTL ---------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _AMDGCN_INTRINSICS_H_
+#define _AMDGCN_INTRINSICS_H_
+
+#ifndef EXTERN
+#error "Expected definition of EXTERN"
+#endif
+
+#include <stdint.h>
+
+#ifdef _OPENMP
+// Openmp doesn't pull these builtins into scope, but does error if the type is
+// incorrect
+// This may be a quirk of openmp's compile for host + device assumption, where
+// these don't resolve to anything on the host
+
+EXTERN uint32_t __builtin_amdgcn_atomic_inc32(volatile uint32_t *, uint32_t,
+                                              uint32_t, const char *);
+EXTERN void __builtin_amdgcn_s_barrier(void);
+EXTERN void __builtin_amdgcn_fence(uint32_t, const char *);
+
+EXTERN void __builtin_amdgcn_s_sleep(int);
+
+EXTERN uint32_t __builtin_amdgcn_workitem_id_x(void);
+EXTERN uint32_t __builtin_amdgcn_workgroup_id_x(void);
+EXTERN uint16_t __builtin_amdgcn_workgroup_size_x(void);
+EXTERN uint32_t __builtin_amdgcn_grid_size_x(void);
+
+EXTERN uint64_t __builtin_amdgcn_s_memrealtime(void);
+EXTERN uint32_t __builtin_amdgcn_s_getreg(int32_t);
+EXTERN uint64_t __builtin_amdgcn_read_exec(void);
+
+EXTERN __attribute__((address_space(4))) void *
+__builtin_amdgcn_dispatch_ptr() noexcept;
+
+EXTERN uint32_t __builtin_amdgcn_mbcnt_lo(uint32_t, uint32_t);
+EXTERN uint32_t __builtin_amdgcn_mbcnt_hi(uint32_t, uint32_t);
+EXTERN int32_t __builtin_amdgcn_ds_bpermute(int32_t, int32_t);
+#endif
+
+#endif
diff --git a/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_locks.hip b/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_locks.hip
--- a/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_locks.hip
+++ b/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_locks.hip
@@ -14,6 +14,7 @@
 // a SIMD => wavefront mapping once that is implemented.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/debug.h"
 
@@ -26,3 +27,5 @@
 DEVICE void __kmpc_impl_set_lock(omp_lock_t *) { warn(); }
 DEVICE void __kmpc_impl_unset_lock(omp_lock_t *) { warn(); }
 DEVICE int __kmpc_impl_test_lock(omp_lock_t *lock) { warn(); }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_smid.hip b/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_smid.hip
--- a/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_smid.hip
+++ b/openmp/libomptarget/deviceRTLs/amdgcn/src/amdgcn_smid.hip
@@ -5,6 +5,7 @@
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "target_impl.h"
 
@@ -59,3 +60,5 @@
       ENCODE_HWREG(HW_ID_SE_ID_SIZE, HW_ID_SE_ID_OFFSET, HW_ID));
   return (se_id << HW_ID_CU_ID_SIZE) + cu_id;
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.h b/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.h
--- a/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.h
+++ b/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.h
@@ -17,16 +17,54 @@
 #endif
 
 #include "amdgcn_interface.h"
+#include "amdgcn_intrinsics.h"
 
 #include <assert.h>
 #include <inttypes.h>
 #include <stddef.h>
 #include <stdint.h>
 
+#ifdef _OPENMP
+#define DEVICE
+#else
 #define DEVICE __attribute__((device))
+#endif
+
 #define INLINE inline DEVICE
 #define NOINLINE __attribute__((noinline)) DEVICE
-#define SHARED __attribute__((shared))
+
+#ifdef _OPENMP
+
+// Follows the pattern in interface.h
+typedef enum omp_allocator_handle_t {
+  omp_null_allocator = 0,
+  omp_default_mem_alloc = 1,
+  omp_large_cap_mem_alloc = 2,
+  omp_const_mem_alloc = 3,
+  omp_high_bw_mem_alloc = 4,
+  omp_low_lat_mem_alloc = 5,
+  omp_cgroup_mem_alloc = 6,
+  omp_pteam_mem_alloc = 7,
+  omp_thread_mem_alloc = 8,
+  KMP_ALLOCATOR_MAX_HANDLE = UINTPTR_MAX
+} omp_allocator_handle_t;
+
+#define __p(STR) _Pragma(STR)
+#define __p2(STR) __p(#STR)
+
+#define SHARED(NAME)                                                           \
+  NAME [[clang::loader_uninitialized]];                                        \
+  __p2(omp allocate(NAME) allocator(omp_pteam_mem_alloc))
+
+#define EXTERN_SHARED(NAME)                                                    \
+  NAME;                                                                        \
+  __p2(omp allocate(NAME) allocator(omp_pteam_mem_alloc))
+
+#else // HIP
+#define SHARED(NAME) __attribute__((shared)) NAME
+#define EXTERN_SHARED(NAME) __attribute__((shared)) NAME
+#endif
+
 #define ALIGN(N) __attribute__((aligned(N)))
 
 #include "hip_atomics.h"
diff --git a/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip b/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip
--- a/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip
+++ b/openmp/libomptarget/deviceRTLs/amdgcn/src/target_impl.hip
@@ -9,6 +9,7 @@
 // Definitions of target specific functions
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "target_impl.h"
 
@@ -65,7 +66,13 @@
   return __builtin_amdgcn_ds_bpermute(index << 2, var);
 }
 
-static DEVICE SHARED uint32_t L1_Barrier;
+
+// static doesn't work for openmp + shared, the variable is discarded by llc
+// and lld then fails to link. Unclear why the variable hasn't been associated
+// with the kernel. Dropping the static qualifier for now.
+
+// static
+DEVICE uint32_t SHARED(L1_Barrier);
 
 DEVICE void __kmpc_impl_target_init() {
   // Don't have global ctors, and shared memory is not zero init
@@ -147,3 +154,5 @@
 // Stub implementations
 DEVICE void *__kmpc_impl_malloc(size_t ) { return nullptr }
 DEVICE void __kmpc_impl_free(void *) {}
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/omptarget.h b/openmp/libomptarget/deviceRTLs/common/omptarget.h
--- a/openmp/libomptarget/deviceRTLs/common/omptarget.h
+++ b/openmp/libomptarget/deviceRTLs/common/omptarget.h
@@ -71,8 +71,8 @@
   uint32_t nArgs;
 };
 
-extern DEVICE SHARED omptarget_nvptx_SharedArgs
-    omptarget_nvptx_globalArgs;
+extern DEVICE
+    omptarget_nvptx_SharedArgs EXTERN_SHARED(omptarget_nvptx_globalArgs);
 
 // Worker slot type which is initialized with the default worker slot
 // size of 4*32 bytes.
@@ -94,7 +94,7 @@
   __kmpc_impl_lanemask_t ActiveThreads[DS_Max_Warp_Number];
 };
 
-extern DEVICE SHARED DataSharingStateTy DataSharingState;
+extern DEVICE DataSharingStateTy EXTERN_SHARED(DataSharingState);
 
 ////////////////////////////////////////////////////////////////////////////////
 // task ICV and (implicit & explicit) task state
@@ -294,18 +294,25 @@
 
 extern DEVICE omptarget_nvptx_SimpleMemoryManager
     omptarget_nvptx_simpleMemoryManager;
-extern DEVICE SHARED uint32_t usedMemIdx;
-extern DEVICE SHARED uint32_t usedSlotIdx;
-extern DEVICE SHARED uint8_t
-    parallelLevel[MAX_THREADS_PER_TEAM / WARPSIZE];
-extern DEVICE SHARED uint16_t threadLimit;
-extern DEVICE SHARED uint16_t threadsInTeam;
-extern DEVICE SHARED uint16_t nThreads;
-extern DEVICE SHARED
-    omptarget_nvptx_ThreadPrivateContext *omptarget_nvptx_threadPrivateContext;
-
-extern DEVICE SHARED uint32_t execution_param;
-extern DEVICE SHARED void *ReductionScratchpadPtr;
+extern DEVICE uint32_t EXTERN_SHARED(usedMemIdx);
+extern DEVICE uint32_t EXTERN_SHARED(usedSlotIdx);
+
+#if _OPENMP
+extern DEVICE uint8_t parallelLevel[MAX_THREADS_PER_TEAM / WARPSIZE];
+#pragma omp allocate(parallelLevel) allocator(omp_pteam_mem_alloc)
+#else
+extern DEVICE
+    uint8_t EXTERN_SHARED(parallelLevel)[MAX_THREADS_PER_TEAM / WARPSIZE];
+#endif
+
+extern DEVICE uint16_t EXTERN_SHARED(threadLimit);
+extern DEVICE uint16_t EXTERN_SHARED(threadsInTeam);
+extern DEVICE uint16_t EXTERN_SHARED(nThreads);
+extern DEVICE omptarget_nvptx_ThreadPrivateContext *
+    EXTERN_SHARED(omptarget_nvptx_threadPrivateContext);
+
+extern DEVICE uint32_t EXTERN_SHARED(execution_param);
+extern DEVICE void *EXTERN_SHARED(ReductionScratchpadPtr);
 
 ////////////////////////////////////////////////////////////////////////////////
 // work function (outlined parallel/simd functions) and arguments.
@@ -313,8 +320,9 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 typedef void *omptarget_nvptx_WorkFn;
-extern volatile DEVICE SHARED omptarget_nvptx_WorkFn
-    omptarget_nvptx_workFn;
+
+extern volatile DEVICE
+    omptarget_nvptx_WorkFn EXTERN_SHARED(omptarget_nvptx_workFn);
 
 ////////////////////////////////////////////////////////////////////////////////
 // get private data structures
diff --git a/openmp/libomptarget/deviceRTLs/common/src/cancel.cu b/openmp/libomptarget/deviceRTLs/common/src/cancel.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/cancel.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/cancel.cu
@@ -9,6 +9,7 @@
 // Interface to be used in the implementation of OpenMP cancel.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "interface.h"
 #include "common/debug.h"
@@ -26,3 +27,5 @@
   // disabled
   return 0;
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/critical.cu b/openmp/libomptarget/deviceRTLs/common/src/critical.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/critical.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/critical.cu
@@ -9,6 +9,7 @@
 // This file contains the implementation of critical with KMPC interface
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "interface.h"
 #include "common/debug.h"
@@ -26,3 +27,5 @@
   PRINT0(LD_IO, "call to kmpc_end_critical()\n");
   omp_unset_lock((omp_lock_t *)lck);
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/data_sharing.cu b/openmp/libomptarget/deviceRTLs/common/src/data_sharing.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/data_sharing.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/data_sharing.cu
@@ -9,6 +9,8 @@
 // This file contains the implementation of data sharing environments
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
+
 #include "common/omptarget.h"
 #include "target_impl.h"
 
@@ -275,3 +277,4 @@
   omptarget_nvptx_simpleMemoryManager.Release();
 }
 
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/libcall.cu b/openmp/libomptarget/deviceRTLs/common/src/libcall.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/libcall.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/libcall.cu
@@ -10,6 +10,7 @@
 // invoked by the user in an OpenMP region
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "common/target_atomic.h"
@@ -316,11 +317,21 @@
   return rc;
 }
 
+// For some reason this function, and only this function, triggers
+// error: definition of builtin function 'omp_is_initial_device'
+// Working around here until the compiler quirk is understood
+#ifdef __AMDGCN__
+DEVICE int omp_is_initial_device_OVERLOAD(void) asm("omp_is_initial_device");
+DEVICE int omp_is_initial_device_OVERLOAD(void) {
+  PRINT0(LD_IO, "call omp_is_initial_device() returns 0\n");
+  return 0; // 0 by def on device
+}
+#else
 EXTERN int omp_is_initial_device(void) {
   PRINT0(LD_IO, "call omp_is_initial_device() returns 0\n");
   return 0; // 0 by def on device
 }
-
+#endif
 // Unspecified on the device.
 EXTERN int omp_get_initial_device(void) {
   PRINT0(LD_IO, "call omp_get_initial_device() returns 0\n");
@@ -362,3 +373,5 @@
   PRINT(LD_IO, "call omp_test_lock() return %d\n", rc);
   return rc;
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/loop.cu b/openmp/libomptarget/deviceRTLs/common/src/loop.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/loop.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/loop.cu
@@ -11,6 +11,7 @@
 // interface as loops.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "target_impl.h"
@@ -754,3 +755,5 @@
 EXTERN void __kmpc_for_static_fini(kmp_Ident *loc, int32_t global_tid) {
   PRINT0(LD_IO, "call kmpc_for_static_fini\n");
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/omp_data.cu b/openmp/libomptarget/deviceRTLs/common/src/omp_data.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/omp_data.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/omp_data.cu
@@ -9,6 +9,7 @@
 // This file contains the data objects used on the GPU device.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "common/device_environment.h"
@@ -29,40 +30,49 @@
 
 DEVICE omptarget_nvptx_SimpleMemoryManager
     omptarget_nvptx_simpleMemoryManager;
-DEVICE SHARED uint32_t usedMemIdx;
-DEVICE SHARED uint32_t usedSlotIdx;
+DEVICE uint32_t SHARED(usedMemIdx);
+DEVICE uint32_t SHARED(usedSlotIdx);
 
-DEVICE SHARED uint8_t parallelLevel[MAX_THREADS_PER_TEAM / WARPSIZE];
-DEVICE SHARED uint16_t threadLimit;
-DEVICE SHARED uint16_t threadsInTeam;
-DEVICE SHARED uint16_t nThreads;
+#ifdef _OPENMP
+DEVICE [[clang::loader_uninitialized]] uint8_t
+    parallelLevel[MAX_THREADS_PER_TEAM / WARPSIZE];
+#pragma omp allocate(parallelLevel) allocator(omp_pteam_mem_alloc)
+#else
+DEVICE uint8_t SHARED(parallelLevel)[MAX_THREADS_PER_TEAM / WARPSIZE];
+#endif
+
+DEVICE uint16_t SHARED(threadLimit);
+DEVICE uint16_t SHARED(threadsInTeam);
+DEVICE uint16_t SHARED(nThreads);
 // Pointer to this team's OpenMP state object
-DEVICE SHARED
-    omptarget_nvptx_ThreadPrivateContext *omptarget_nvptx_threadPrivateContext;
+DEVICE omptarget_nvptx_ThreadPrivateContext *
+    SHARED(omptarget_nvptx_threadPrivateContext);
 
 ////////////////////////////////////////////////////////////////////////////////
 // The team master sets the outlined parallel function in this variable to
 // communicate with the workers.  Since it is in shared memory, there is one
 // copy of these variables for each kernel, instance, and team.
 ////////////////////////////////////////////////////////////////////////////////
-volatile DEVICE SHARED omptarget_nvptx_WorkFn omptarget_nvptx_workFn;
+volatile DEVICE omptarget_nvptx_WorkFn SHARED(omptarget_nvptx_workFn);
 
 ////////////////////////////////////////////////////////////////////////////////
 // OpenMP kernel execution parameters
 ////////////////////////////////////////////////////////////////////////////////
-DEVICE SHARED uint32_t execution_param;
+DEVICE uint32_t SHARED(execution_param);
 
 ////////////////////////////////////////////////////////////////////////////////
 // Data sharing state
 ////////////////////////////////////////////////////////////////////////////////
-DEVICE SHARED DataSharingStateTy DataSharingState;
+DEVICE DataSharingStateTy SHARED(DataSharingState);
 
 ////////////////////////////////////////////////////////////////////////////////
 // Scratchpad for teams reduction.
 ////////////////////////////////////////////////////////////////////////////////
-DEVICE SHARED void *ReductionScratchpadPtr;
+DEVICE void *SHARED(ReductionScratchpadPtr);
 
 ////////////////////////////////////////////////////////////////////////////////
 // Data sharing related variables.
 ////////////////////////////////////////////////////////////////////////////////
-DEVICE SHARED omptarget_nvptx_SharedArgs omptarget_nvptx_globalArgs;
+DEVICE omptarget_nvptx_SharedArgs SHARED(omptarget_nvptx_globalArgs);
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/omptarget.cu b/openmp/libomptarget/deviceRTLs/common/src/omptarget.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/omptarget.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/omptarget.cu
@@ -9,6 +9,7 @@
 // This file contains the initialization code for the GPU
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "target_impl.h"
@@ -157,3 +158,5 @@
   PRINT0(LD_IO | LD_PAR, "call to __kmpc_is_spmd_exec_mode\n");
   return isSPMDMode();
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/parallel.cu b/openmp/libomptarget/deviceRTLs/common/src/parallel.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/parallel.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/parallel.cu
@@ -31,6 +31,7 @@
 //    To make a long story short...
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "target_impl.h"
@@ -300,3 +301,5 @@
                                   int proc_bind) {
   PRINT(LD_IO, "call kmpc_push_proc_bind %d\n", (int)proc_bind);
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/reduction.cu b/openmp/libomptarget/deviceRTLs/common/src/reduction.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/reduction.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/reduction.cu
@@ -9,6 +9,7 @@
 // This file contains the implementation of reduction with KMPC interface.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "common/target_atomic.h"
@@ -206,8 +207,8 @@
                          : /*Master thread only*/ 1;
   uint32_t TeamId = GetBlockIdInKernel();
   uint32_t NumTeams = GetNumberOfBlocksInKernel();
-  static SHARED unsigned Bound;
-  static SHARED unsigned ChunkTeamCount;
+  static unsigned SHARED(Bound);
+  static unsigned SHARED(ChunkTeamCount);
 
   // Block progress for teams greater than the current upper
   // limit. We always only allow a number of teams less or equal
@@ -312,3 +313,4 @@
   return 0;
 }
 
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/support.cu b/openmp/libomptarget/deviceRTLs/common/src/support.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/support.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/support.cu
@@ -9,6 +9,7 @@
 // Wrapper implementation to some functions natively supported by the GPU.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/support.h"
 #include "common/debug.h"
@@ -264,3 +265,4 @@
   return static_cast<char *>(ReductionScratchpadPtr) + 256;
 }
 
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/sync.cu b/openmp/libomptarget/deviceRTLs/common/src/sync.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/sync.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/sync.cu
@@ -9,6 +9,7 @@
 // Include all synchronization.
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 #include "target_impl.h"
@@ -135,3 +136,5 @@
   PRINT0(LD_IO, "call __kmpc_syncwarp\n");
   __kmpc_impl_syncwarp(Mask);
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/common/src/task.cu b/openmp/libomptarget/deviceRTLs/common/src/task.cu
--- a/openmp/libomptarget/deviceRTLs/common/src/task.cu
+++ b/openmp/libomptarget/deviceRTLs/common/src/task.cu
@@ -26,6 +26,7 @@
 //    - end
 //
 //===----------------------------------------------------------------------===//
+#pragma omp declare target
 
 #include "common/omptarget.h"
 
@@ -214,3 +215,5 @@
 
   __kmpc_omp_task_with_deps(loc, global_tid, newKmpTaskDescr, 0, 0, 0, 0);
 }
+
+#pragma omp end declare target
diff --git a/openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.h b/openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.h
--- a/openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.h
+++ b/openmp/libomptarget/deviceRTLs/nvptx/src/target_impl.h
@@ -23,7 +23,10 @@
 #define DEVICE __device__
 #define INLINE __forceinline__ DEVICE
 #define NOINLINE __noinline__ DEVICE
-#define SHARED __shared__
+
+#define SHARED(NAME) __shared__ NAME
+#define EXTERN_SHARED(NAME) __shared__ NAME
+
 #define ALIGN(N) __align__(N)
 
 ////////////////////////////////////////////////////////////////////////////////