use topTeamsSet not allTeamsSet

Author: bhandarkar-pranav

flang/lib/Semantics/check-omp-loop.cpp

@@ -263,7 +263,7 @@ void OmpStructureChecker::Enter(const parser::OpenMPLoopConstruct &x) {
   }
 
   if (CurrentDirectiveIsNested() &&
-      llvm::omp::allTeamsSet.test(GetContext().directive) &&
+      llvm::omp::topTeamsSet.test(GetContext().directive) &&
       GetContextParent().directive == llvm::omp::Directive::OMPD_target &&
       !GetDirectiveNest(TargetBlockOnlyTeams)) {
     context_.Say(GetContextParent().directiveSource,

flang/lib/Semantics/check-omp-structure.cpp

@@ -5219,7 +5219,7 @@ bool OmpStructureChecker::CheckTargetBlockOnlyTeams(
                      std::get_if<parser::OpenMPLoopConstruct>(
                          &ompConstruct->u)}) {
         llvm::omp::Directive dirId{ompLoopConstruct->BeginDir().DirId()};
-        if (llvm::omp::allTeamsSet.test(dirId)) {
+        if (llvm::omp::topTeamsSet.test(dirId)) {
           nestedTeams = true;
         }
       }