[Clang][OpenMP] Fix the wrong transform of num_teams claused introduced in #99732 (#102716)

Author: shiltian

clang/lib/Sema/TreeTransform.h

@@ -11018,11 +11018,16 @@ TreeTransform<Derived>::TransformOMPAllocateClause(OMPAllocateClause *C) {
 template <typename Derived>
 OMPClause *
 TreeTransform<Derived>::TransformOMPNumTeamsClause(OMPNumTeamsClause *C) {
-  ExprResult E = getDerived().TransformExpr(C->getNumTeams().front());
-  if (E.isInvalid())
-    return nullptr;
+  llvm::SmallVector<Expr *, 3> Vars;
+  Vars.reserve(C->varlist_size());
+  for (auto *VE : C->varlist()) {
+    ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE));
+    if (EVar.isInvalid())
+      return nullptr;
+    Vars.push_back(EVar.get());
+  }
   return getDerived().RebuildOMPNumTeamsClause(
-      E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc());
+      Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc());
 }
 
 template <typename Derived>

clang/test/OpenMP/target_teams_ast_print.cpp

@@ -58,6 +58,8 @@ T tmain(T argc, T *argv) {
   foo();
 #pragma omp target teams allocate(my_allocator:f) reduction(^:e, f) reduction(&& : g) uses_allocators(my_allocator(traits))
   foo();
+#pragma omp target teams ompx_bare num_teams(C, C, C) thread_limit(d*C, d*C, d*C)
+  foo();
   return 0;
 }
 
@@ -97,6 +99,8 @@ T tmain(T argc, T *argv) {
 // CHECK-NEXT: foo()
 // CHECK-NEXT: #pragma omp target teams allocate(my_allocator: f) reduction(^: e,f) reduction(&&: g) uses_allocators(my_allocator(traits))
 // CHECK-NEXT: foo()
+// CHECK-NEXT: #pragma omp target teams ompx_bare num_teams(1,1,1) thread_limit(d * 1,d * 1,d * 1)
+// CHECK-NEXT: foo();
 
 enum Enum { };