diff --git a/clang/lib/Headers/__clang_cuda_intrinsics.h b/clang/lib/Headers/__clang_cuda_intrinsics.h
--- a/clang/lib/Headers/__clang_cuda_intrinsics.h
+++ b/clang/lib/Headers/__clang_cuda_intrinsics.h
@@ -577,6 +577,79 @@
 }
 #endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 800
 
+#if !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 900
+__device__ inline unsigned __isCtaShared(const void *ptr) {
+  return __isShared(ptr);
+}
+
+__device__ inline unsigned __isClusterShared(const void *__ptr) {
+  return __nvvm_isspacep_shared_cluster(__ptr);
+}
+
+__device__ inline void *__cluster_map_shared_rank(const void *__ptr,
+                                                  unsigned __rank) {
+  return __nvvm_mapa((void*)__ptr, __rank);
+}
+
+__device__ inline unsigned __cluster_query_shared_rank(const void *__ptr) {
+  return __nvvm_getctarank((void*)__ptr);
+}
+
+__device__ inline uint2
+__cluster_map_shared_multicast(const void *__ptr,
+                               unsigned int __cluster_cta_mask) {
+  return make_uint2((unsigned)__cvta_generic_to_shared(__ptr),
+                    __cluster_cta_mask);
+}
+
+__device__ inline unsigned __clusterDimIsSpecified() {
+  return __nvvm_is_explicit_cluster();
+}
+
+__device__ inline dim3 __clusterDim(){
+  return {__nvvm_read_ptx_sreg_cluster_nctaid_x(),
+          __nvvm_read_ptx_sreg_cluster_nctaid_y(),
+          __nvvm_read_ptx_sreg_cluster_nctaid_z()};
+}
+
+__device__ inline dim3 __clusterRelativeBlockIdx() {
+  return {__nvvm_read_ptx_sreg_cluster_ctaid_x(),
+          __nvvm_read_ptx_sreg_cluster_ctaid_y(),
+          __nvvm_read_ptx_sreg_cluster_ctaid_z()};
+}
+
+__device__ inline dim3 __clusterGridDimInClusters(){
+  return {__nvvm_read_ptx_sreg_nclusterid_x(),
+          __nvvm_read_ptx_sreg_nclusterid_y(),
+          __nvvm_read_ptx_sreg_nclusterid_z()};
+}
+
+__device__ inline dim3 __clusterIdx(){
+  return {__nvvm_read_ptx_sreg_clusterid_x(),
+          __nvvm_read_ptx_sreg_clusterid_y(),
+          __nvvm_read_ptx_sreg_clusterid_z()};
+}
+
+__device__ inline unsigned __clusterRelativeBlockRank() {
+  return __nvvm_read_ptx_sreg_cluster_ctarank();
+}
+
+__device__ inline unsigned __clusterSizeInBlocks() {
+  return __nvvm_read_ptx_sreg_cluster_nctarank();
+}
+
+__device__ inline void __cluster_barrier_arrive();
+__device__ inline void __cluster_barrier_arrive_relaxed();
+__device__ inline void __cluster_barrier_wait();
+__device__ inline void __threadfence_cluster();
+__device__ inline float2 atomicAdd(float2 *__ptr, float2 __val);
+__device__ inline float2 atomicAdd_block(float2 *__ptr, float2 __val);
+__device__ inline float2 atomicAdd_system(float2 *__ptr, float2 __val);
+__device__ inline float4 atomicAdd(float4 *ptr, float4 __val);
+__device__ inline float4 atomicAdd_block(float4 *ptr, float4 __val);
+__device__ inline float4 atomicAdd_system(float4 *ptr, float4 __val);
+
+#endif // !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 900
 #endif // CUDA_VERSION >= 11000
 
 #endif // defined(__CLANG_CUDA_INTRINSICS_H__)