Revert "[OpenMP][FIX] Do not use InaccessibleMemOrArgMemOnly for barrier and flush"

Forgot to include test changes :(

This reverts commit 72a9e7c.

Author: jdoerfert

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

@@ -389,16 +389,24 @@ __OMP_ATTRS_SET(SetterAttrs,
 #define __OMP_RTL_ATTRS(Name, FnAttrSet, RetAttrSet, ArgAttrSets)              \
   OMP_RTL_ATTRS(OMPRTL_##Name, FnAttrSet, RetAttrSet, ArgAttrSets)
 
-__OMP_RTL_ATTRS(__kmpc_barrier, AttributeSet(), AttributeSet(), {})
+__OMP_RTL_ATTRS(__kmpc_barrier,
+                AttributeSet(EnumAttr(InaccessibleMemOrArgMemOnly)),
+                AttributeSet(), {})
 __OMP_RTL_ATTRS(__kmpc_cancel,
                 AttributeSet(EnumAttr(InaccessibleMemOrArgMemOnly)),
                 AttributeSet(), {})
-__OMP_RTL_ATTRS(__kmpc_cancel_barrier, AttributeSet(), AttributeSet(), {})
-__OMP_RTL_ATTRS(__kmpc_flush, AttributeSet(), AttributeSet(), {})
+__OMP_RTL_ATTRS(__kmpc_cancel_barrier,
+                AttributeSet(EnumAttr(InaccessibleMemOrArgMemOnly)),
+                AttributeSet(), {})
+__OMP_RTL_ATTRS(__kmpc_flush,
+                AttributeSet(EnumAttr(InaccessibleMemOrArgMemOnly)),
+                AttributeSet(), {})
 __OMP_RTL_ATTRS(__kmpc_global_thread_num, GetterAttrs, AttributeSet(), {})
 __OMP_RTL_ATTRS(__kmpc_fork_call, AttributeSet(EnumAttr(NoUnwind)),
                 AttributeSet(), {})
-__OMP_RTL_ATTRS(__kmpc_omp_taskwait, AttributeSet(), AttributeSet(), {})
+__OMP_RTL_ATTRS(__kmpc_omp_taskwait,
+                AttributeSet(EnumAttr(InaccessibleMemOrArgMemOnly)),
+                AttributeSet(), {})
 __OMP_RTL_ATTRS(__kmpc_omp_taskyield,
                 AttributeSet(EnumAttr(InaccessibleMemOrArgMemOnly)),
                 AttributeSet(), {})