[flang] Allow cycle in target teams distribute [simd] (#145462)

flang incorrectly issues a semantic erorr when a `cycle` statement is
used inside a `target teams distribute [simd]` associated loop. This is
not prevented by the spec, therefore this PR allows such construct.

Author: ergawy

flang/lib/Semantics/check-directive-structure.h

@@ -76,6 +76,8 @@ template <typename D> class NoBranchingEnforce {
         case llvm::omp::Directive::OMPD_distribute_parallel_for:
         case llvm::omp::Directive::OMPD_distribute_simd:
         case llvm::omp::Directive::OMPD_distribute_parallel_for_simd:
+        case llvm::omp::Directive::OMPD_target_teams_distribute:
+        case llvm::omp::Directive::OMPD_target_teams_distribute_simd:
         case llvm::omp::Directive::OMPD_target_teams_distribute_parallel_do:
         case llvm::omp::Directive::
             OMPD_target_teams_distribute_parallel_do_simd:

flang/test/Semantics/OpenMP/do05-positivecase.f90

@@ -57,4 +57,18 @@ program omp_do
     if(i<10) cycle
   end do
   !$omp end target teams distribute parallel do simd
+
+  !$omp target teams distribute 
+  !DEF: /omp_do/OtherConstruct6/i (OmpPrivate, OmpPreDetermined) HostAssoc INTEGER(4)
+  do i=1,100
+    !REF: /omp_do/OtherConstruct6/i
+    if(i < 5) cycle
+  end do
+
+  !$omp target teams distribute simd
+  !DEF: /omp_do/OtherConstruct7/i (OmpLinear, OmpPreDetermined) HostAssoc INTEGER(4)
+  do i=1,100
+    !REF: /omp_do/OtherConstruct7/i
+    if(i < 5) cycle
+  end do
 end program omp_do