[libclc] libclc: Define work_group_barrier (PR #184780)

[Wenju He via cfe-commits]

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@@ -9,9 +9,17 @@
 #include <clc/opencl/synchronization/utils.h>
 #include <clc/synchronization/clc_work_group_barrier.h>
 
-_CLC_DEF _CLC_OVERLOAD void barrier(cl_mem_fence_flags flags) {
-  int memory_scope = __opencl_get_memory_scope(flags);
+_CLC_DEF _CLC_OVERLOAD void work_group_barrier(cl_mem_fence_flags flags,
+                                               memory_scope scope) {
   int memory_order = __ATOMIC_SEQ_CST;
   __CLC_MemorySemantics memory_semantics = __opencl_get_memory_semantics(flags);
-  __clc_work_group_barrier(memory_scope, memory_order, memory_semantics);
+  __clc_work_group_barrier(scope, memory_order, memory_semantics);
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wenju-he wrote:

need to call  __opencl_get_clang_memory_scope(memscope) since __clc_work_group_barrier accepts clang scope macros

https://github.com/llvm/llvm-project/pull/184780