[OpenMP] Add strict mode in num_tasks and grainsize

This patch adds new API __kmpc_taskloop_5 to accomadate strict
modifier (introduced in OpenMP 5.1) in num_tasks and grainsize
clause.

Differential Revision: https://reviews.llvm.org/D92352

Author: nawrinsu

openmp/runtime/src/dllexports

@@ -371,6 +371,7 @@ kmpc_set_defaults                           224
         __kmpc_doacross_fini                264
         __kmpc_taskloop                     266
         __kmpc_critical_with_hint           270
+        __kmpc_taskloop_5                   285
 %endif
 kmpc_aligned_malloc                         265
 kmpc_set_disp_num_buffers                   267

openmp/runtime/src/kmp.h

@@ -3783,6 +3783,12 @@ KMP_EXPORT void __kmpc_taskloop(ident_t *loc, kmp_int32 gtid, kmp_task_t *task,
                                 kmp_uint64 *ub, kmp_int64 st, kmp_int32 nogroup,
                                 kmp_int32 sched, kmp_uint64 grainsize,
                                 void *task_dup);
+KMP_EXPORT void __kmpc_taskloop_5(ident_t *loc, kmp_int32 gtid,
+                                  kmp_task_t *task, kmp_int32 if_val,
+                                  kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
+                                  kmp_int32 nogroup, kmp_int32 sched,
+                                  kmp_uint64 grainsize, kmp_int32 modifier,
+                                  void *task_dup);
 KMP_EXPORT void *__kmpc_task_reduction_init(int gtid, int num_data, void *data);
 KMP_EXPORT void *__kmpc_taskred_init(int gtid, int num_data, void *data);
 KMP_EXPORT void *__kmpc_task_reduction_get_th_data(int gtid, void *tg, void *d);