Index: clang/lib/Parse/ParseOpenMP.cpp
===================================================================
--- clang/lib/Parse/ParseOpenMP.cpp
+++ clang/lib/Parse/ParseOpenMP.cpp
@@ -4364,6 +4364,11 @@
     }
     if (Data.ExtraModifier == OMPC_MAP_unknown) {
       Data.ExtraModifier = OMPC_MAP_tofrom;
+      if (getLangOpts().OpenMP >= 52)
+        if (DKind == OMPD_target_enter_data)
+          Data.ExtraModifier = OMPC_MAP_to;
+        else if (DKind == OMPD_target_exit_data)
+          Data.ExtraModifier = OMPC_MAP_from;
       Data.IsMapTypeImplicit = true;
     }
 
Index: clang/lib/Sema/SemaOpenMP.cpp
===================================================================
--- clang/lib/Sema/SemaOpenMP.cpp
+++ clang/lib/Sema/SemaOpenMP.cpp
@@ -21684,10 +21684,12 @@
       // target enter data
       // OpenMP [2.10.2, Restrictions, p. 99]
       // A map-type must be specified in all map clauses and must be either
-      // to or alloc.
+      // to or alloc. Starting with OpenMP 5.2 the default map type is `to` if
+      // no map type is present.
       OpenMPDirectiveKind DKind = DSAS->getCurrentDirective();
       if (DKind == OMPD_target_enter_data &&
-          !(MapType == OMPC_MAP_to || MapType == OMPC_MAP_alloc)) {
+          !(MapType == OMPC_MAP_to || MapType == OMPC_MAP_alloc ||
+            SemaRef.getLangOpts().OpenMP >= 52)) {
         SemaRef.Diag(StartLoc, diag::err_omp_invalid_map_type_for_directive)
             << (IsMapTypeImplicit ? 1 : 0)
             << getOpenMPSimpleClauseTypeName(OMPC_map, MapType)
@@ -21698,10 +21700,11 @@
       // target exit_data
       // OpenMP [2.10.3, Restrictions, p. 102]
       // A map-type must be specified in all map clauses and must be either
-      // from, release, or delete.
+      // from, release, or delete. Starting with OpenMP 5.2 the default map
+      // type is `from` if no map type is present.
       if (DKind == OMPD_target_exit_data &&
           !(MapType == OMPC_MAP_from || MapType == OMPC_MAP_release ||
-            MapType == OMPC_MAP_delete)) {
+            MapType == OMPC_MAP_delete || SemaRef.getLangOpts().OpenMP >= 52)) {
         SemaRef.Diag(StartLoc, diag::err_omp_invalid_map_type_for_directive)
             << (IsMapTypeImplicit ? 1 : 0)
             << getOpenMPSimpleClauseTypeName(OMPC_map, MapType)
Index: clang/test/OpenMP/target_enter_data_ast_print.cpp
===================================================================
--- clang/test/OpenMP/target_enter_data_ast_print.cpp
+++ clang/test/OpenMP/target_enter_data_ast_print.cpp
@@ -6,6 +6,10 @@
 // RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=45 -x c++ -std=c++11 -emit-pch -o %t %s
 // RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=45 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
 
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=52 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=52 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=52 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
+
 // RUN: %clang_cc1 -verify -fopenmp -ast-print %s | FileCheck %s
 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -emit-pch -o %t %s
 // RUN: %clang_cc1 -fopenmp -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
Index: clang/test/OpenMP/target_enter_data_ast_print_openmp52.cpp
===================================================================
--- /dev/null
+++ clang/test/OpenMP/target_enter_data_ast_print_openmp52.cpp
@@ -0,0 +1,65 @@
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=52 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=52 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=52 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck --check-prefix=CHECK --check-prefix=CHECK-52 %s
+
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+template <typename T, int C>
+T tmain(T argc, T *argv) {
+  T i_def, i;
+
+  i = argc;
+
+#pragma omp target enter data map(i_def)
+
+#pragma omp target enter data map(to: i)
+
+  return 0;
+}
+
+// CHECK: template <typename T, int C> T tmain(T argc, T *argv) {
+// CHECK-NEXT: T i_def, i;
+// CHECK-NEXT: i = argc;
+// CHECK-NEXT: #pragma omp target enter data map(to: i_def){{$}}
+// CHECK-NEXT: #pragma omp target enter data map(to: i){{$}}
+
+// CHECK: template<> int tmain<int, 5>(int argc, int *argv) {
+// CHECK-NEXT: int i_def, i;
+// CHECK-NEXT: i = argc;
+// CHECK-NEXT: #pragma omp target enter data map(to: i_def){{$}}
+// CHECK-NEXT: #pragma omp target enter data map(to: i)
+
+// CHECK: template<> char tmain<char, 1>(char argc, char *argv) {
+// CHECK-NEXT: char i_def, i;
+// CHECK-NEXT: i = argc;
+// CHECK-NEXT: #pragma omp target enter data map(to: i_def){{$}}
+// CHECK-NEXT: #pragma omp target enter data map(to: i)
+
+int main (int argc, char **argv) {
+  int b_def, b;
+  static int a_def, a;
+// CHECK: static int a_def, a;
+
+#pragma omp target enter data map(a_def)
+// CHECK:      #pragma omp target enter data map(to: a_def)
+  a_def=2;
+// CHECK-NEXT: a_def = 2;
+
+#pragma omp target enter data map(to: a)
+// CHECK:      #pragma omp target enter data map(to: a)
+  a=2;
+// CHECK-NEXT: a = 2;
+
+#pragma omp target enter data map(b_def)
+// CHECK-NEXT:      #pragma omp target enter data map(to: b_def)
+
+#pragma omp target enter data map(to: b)
+// CHECK-NEXT:      #pragma omp target enter data map(to: b)
+
+  return tmain<int, 5>(argc, &argc) + tmain<char, 1>(argv[0][0], argv[0]);
+}
+
+#endif
Index: clang/test/OpenMP/target_exit_data_ast_print.cpp
===================================================================
--- clang/test/OpenMP/target_exit_data_ast_print.cpp
+++ clang/test/OpenMP/target_exit_data_ast_print.cpp
@@ -6,6 +6,10 @@
 // RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=45 -x c++ -std=c++11 -emit-pch -o %t %s
 // RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=45 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
 
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=52 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=52 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=52 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
+
 // RUN: %clang_cc1 -verify -fopenmp -ast-print %s | FileCheck %s
 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -emit-pch -o %t %s
 // RUN: %clang_cc1 -fopenmp -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
Index: clang/test/OpenMP/target_exit_data_ast_print_openmp52.cpp
===================================================================
--- /dev/null
+++ clang/test/OpenMP/target_exit_data_ast_print_openmp52.cpp
@@ -0,0 +1,64 @@
+// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=52 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp -fopenmp-version=52 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp -fopenmp-version=52 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
+
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+template <typename T, int C>
+T tmain(T argc, T *argv) {
+  T i_def, i;
+
+  i = argc;
+#pragma omp target exit data map(i_def)
+
+#pragma omp target exit data map(from: i)
+
+  return 0;
+}
+
+// CHECK: template <typename T, int C> T tmain(T argc, T *argv) {
+// CHECK-NEXT: T i_def, i;
+// CHECK-NEXT: i = argc;
+// CHECK-NEXT: #pragma omp target exit data map(from: i_def){{$}}
+// CHECK-NEXT: #pragma omp target exit data map(from: i){{$}}
+
+// CHECK: template<> int tmain<int, 5>(int argc, int *argv) {
+// CHECK-NEXT: int i_def, i;
+// CHECK-NEXT: i = argc;
+// CHECK-NEXT: #pragma omp target exit data map(from: i_def)
+// CHECK-NEXT: #pragma omp target exit data map(from: i)
+
+// CHECK: template<> char tmain<char, 1>(char argc, char *argv) {
+// CHECK-NEXT: char i_def, i;
+// CHECK-NEXT: i = argc;
+// CHECK-NEXT: #pragma omp target exit data map(from: i_def)
+// CHECK-NEXT: #pragma omp target exit data map(from: i)
+
+int main (int argc, char **argv) {
+  int b_def, b;
+  static int a_def, a;
+// CHECK: static int a_def, a;
+
+#pragma omp target exit data map(a_def)
+// CHECK:      #pragma omp target exit data map(from: a_def)
+  a_def=2;
+// CHECK-NEXT: a_def = 2;
+
+#pragma omp target exit data map(from: a)
+// CHECK:      #pragma omp target exit data map(from: a)
+  a=2;
+// CHECK-NEXT: a = 2;
+
+#pragma omp target exit data map(b_def)
+// CHECK-NEXT:      #pragma omp target exit data map(from: b_def)
+
+#pragma omp target exit data map(from: b)
+// CHECK-NEXT:      #pragma omp target exit data map(from: b)
+
+  return tmain<int, 5>(argc, &argc) + tmain<char, 1>(argv[0][0], argv[0]);
+}
+
+#endif