[flang] [llvm] [Flang][OpenMP] Add parser support for grainsize and num_tasks clause (PR #113136)

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``````````bash
git-clang-format --diff e13f1d1daf9b76134c3585e8250941920bdf3da6 a4253d4d9d00aa269883208b36ae9db4e0dfb8e3 --extensions cpp,h -- flang/examples/FeatureList/FeatureList.cpp flang/include/flang/Parser/dump-parse-tree.h flang/include/flang/Parser/parse-tree.h flang/lib/Lower/OpenMP/Clauses.cpp flang/lib/Parser/openmp-parsers.cpp flang/lib/Parser/unparse.cpp flang/lib/Semantics/check-omp-structure.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/flang/lib/Parser/unparse.cpp b/flang/lib/Parser/unparse.cpp
index 92e11e15ba..a15e0465e5 100644
--- a/flang/lib/Parser/unparse.cpp
+++ b/flang/lib/Parser/unparse.cpp
@@ -2171,11 +2171,13 @@ public:
     Walk(std::get<OmpOrderClause::Type>(x.t));
   }
   void Unparse(const OmpGrainsizeClause &x) {
-    Walk(std::get<std::optional<OmpGrainsizeClause::Prescriptiveness>>(x.t), ":");
+    Walk(std::get<std::optional<OmpGrainsizeClause::Prescriptiveness>>(x.t),
+        ":");
     Walk(std::get<ScalarIntExpr>(x.t));
   }
   void Unparse(const OmpNumTasksClause &x) {
-    Walk(std::get<std::optional<OmpNumTasksClause::Prescriptiveness>>(x.t), ":");
+    Walk(
+        std::get<std::optional<OmpNumTasksClause::Prescriptiveness>>(x.t), ":");
     Walk(std::get<ScalarIntExpr>(x.t));
   }
   void Unparse(const OmpDependSinkVecLength &x) {
@@ -2808,7 +2810,8 @@ public:
   WALK_NESTED_ENUM(OmpCancelType, Type) // OMP cancel-type
   WALK_NESTED_ENUM(OmpOrderClause, Type) // OMP order-type
   WALK_NESTED_ENUM(OmpOrderModifier, Kind) // OMP order-modifier
-  WALK_NESTED_ENUM(OmpGrainsizeClause, Prescriptiveness) // OMP grainsize-modifier
+  WALK_NESTED_ENUM(
+      OmpGrainsizeClause, Prescriptiveness) // OMP grainsize-modifier
   WALK_NESTED_ENUM(OmpNumTasksClause, Prescriptiveness) // OMP numtasks-modifier
   WALK_NESTED_ENUM(OmpMapClause, Type) // OMP map-type
 #undef WALK_NESTED_ENUM

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https://github.com/llvm/llvm-project/pull/113136