diff --git a/llvm/include/llvm/Frontend/OpenMP/OMPKinds.def b/llvm/include/llvm/Frontend/OpenMP/OMPKinds.def
--- a/llvm/include/llvm/Frontend/OpenMP/OMPKinds.def
+++ b/llvm/include/llvm/Frontend/OpenMP/OMPKinds.def
@@ -683,7 +683,7 @@
                 ParamAttrs())
 __OMP_RTL_ATTRS(omp_get_partition_place_nums, GetterAttrs, AttributeSet(),
                 ParamAttrs())
-__OMP_RTL_ATTRS(omp_get_wtime, GetterAttrs, AttributeSet(), ParamAttrs())
+__OMP_RTL_ATTRS(omp_get_wtime, GetterArgWriteAttrs, AttributeSet(), ParamAttrs())
 
 __OMP_RTL_ATTRS(omp_set_num_threads, SetterAttrs, AttributeSet(), ParamAttrs())
 __OMP_RTL_ATTRS(omp_set_dynamic, SetterAttrs, AttributeSet(), ParamAttrs())
diff --git a/llvm/test/Transforms/OpenMP/add_attributes.ll b/llvm/test/Transforms/OpenMP/add_attributes.ll
--- a/llvm/test/Transforms/OpenMP/add_attributes.ll
+++ b/llvm/test/Transforms/OpenMP/add_attributes.ll
@@ -1313,7 +1313,7 @@
 ; OPTIMISTIC-NOT: Function Attrs
 ; OPTIMISTIC: declare dso_local void @omp_init_nest_lock_with_hint(%struct.omp_nest_lock_t*, i32)
 
-; OPTIMISTIC: ; Function Attrs: inaccessiblememonly nofree nosync nounwind readonly willreturn
+; OPTIMISTIC: ; Function Attrs: inaccessiblemem_or_argmemonly nofree nosync nounwind willreturn
 ; OPTIMISTIC-NEXT: declare dso_local double @omp_get_wtime()
 
 ; OPTIMISTIC-NOT: Function Attrs