OpenMP: Handle tofrom with target enter/exit data

In 5.2, a map clause can be map-entering or map-exiting,
either containing 'tofrom'. The main reason for this is
permit 'map(x)' with 'omp target enter/exit data',
avoiding to specify 'to:/from:' explicitly. (OpenMP
defaults to 'tofrom'.)

gcc/c/ChangeLog:

	* c-parser.cc (c_parser_omp_target_enter_data,
	c_parser_omp_target_exit_data): Accept tofrom
	map-type modifier but use 'to' / 'from' internally.

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_omp_target_enter_data,
	cp_parser_omp_target_exit_data): Accept tofrom
	map-type modifier but use 'to' / 'from' internally.

gcc/fortran/ChangeLog:

	* dump-parse-tree.cc (show_omp_namelist): For the map-type,
	also handle the always modifer and release/delete.
	* openmp.cc (resolve_omp_clauses): Accept tofrom
	map-type modifier for target enter/exit data,
	but use 'to' / 'from' internally.

libgomp/ChangeLog:

	* libgomp.texi (OpenMP 5.2): Mark target enter/exit data
	with fromto as implemented.

gcc/testsuite/ChangeLog:

	* c-c++-common/gomp/target-data-2.c: New test.
	* c-c++-common/gomp/target-data-3.c: New test.
	* gfortran.dg/gomp/target-data-1.f90: New test.
	* gfortran.dg/gomp/target-data-2.f90: New test.

8 files changed, 127 insertions, 10 deletions

diff --git a/gcc/c/c-parser.cc b/gcc/c/c-parser.cc
index 1704a52..97e3b23 100644
--- a/gcc/c/c-parser.cc
+++ b/gcc/c/c-parser.cc
@@ -21072,6 +21072,14 @@ c_parser_omp_target_enter_data (location_t loc, c_parser *parser,
 	  case GOMP_MAP_ALLOC:
 	    map_seen = 3;
 	    break;
+	  case GOMP_MAP_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_TO);
+	    map_seen = 3;
+	    break;
+	  case GOMP_MAP_ALWAYS_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_ALWAYS_TO);
+	    map_seen = 3;
+	    break;
 	  case GOMP_MAP_FIRSTPRIVATE_POINTER:
 	  case GOMP_MAP_ALWAYS_POINTER:
 	  case GOMP_MAP_ATTACH_DETACH:
@@ -21080,7 +21088,7 @@ c_parser_omp_target_enter_data (location_t loc, c_parser *parser,
 	    map_seen |= 1;
 	    error_at (OMP_CLAUSE_LOCATION (*pc),
 		      "%<#pragma omp target enter data%> with map-type other "
-		      "than %<to%> or %<alloc%> on %<map%> clause");
+		      "than %<to%>, %<tofrom%> or %<alloc%> on %<map%> clause");
 	    *pc = OMP_CLAUSE_CHAIN (*pc);
 	    continue;
 	  }
@@ -21159,6 +21167,14 @@ c_parser_omp_target_exit_data (location_t loc, c_parser *parser,
 	  case GOMP_MAP_DELETE:
 	    map_seen = 3;
 	    break;
+	  case GOMP_MAP_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_FROM);
+	    map_seen = 3;
+	    break;
+	  case GOMP_MAP_ALWAYS_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_ALWAYS_FROM);
+	    map_seen = 3;
+	    break;
 	  case GOMP_MAP_FIRSTPRIVATE_POINTER:
 	  case GOMP_MAP_ALWAYS_POINTER:
 	  case GOMP_MAP_ATTACH_DETACH:
@@ -21167,8 +21183,8 @@ c_parser_omp_target_exit_data (location_t loc, c_parser *parser,
 	    map_seen |= 1;
 	    error_at (OMP_CLAUSE_LOCATION (*pc),
 		      "%<#pragma omp target exit data%> with map-type other "
-		      "than %<from%>, %<release%> or %<delete%> on %<map%>"
-		      " clause");
+		      "than %<from%>, %<tofrom%>, %<release%> or %<delete%> "
+		      "on %<map%> clause");
 	    *pc = OMP_CLAUSE_CHAIN (*pc);
 	    continue;
 	  }
diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index c5d1f9d..212ed14 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -44445,6 +44445,14 @@ cp_parser_omp_target_enter_data (cp_parser *parser, cp_token *pragma_tok,
 	  case GOMP_MAP_ALLOC:
 	    map_seen = 3;
 	    break;
+	  case GOMP_MAP_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_TO);
+	    map_seen = 3;
+	    break;
+	  case GOMP_MAP_ALWAYS_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_ALWAYS_TO);
+	    map_seen = 3;
+	    break;
 	  case GOMP_MAP_FIRSTPRIVATE_POINTER:
 	  case GOMP_MAP_FIRSTPRIVATE_REFERENCE:
 	  case GOMP_MAP_ALWAYS_POINTER:
@@ -44454,7 +44462,7 @@ cp_parser_omp_target_enter_data (cp_parser *parser, cp_token *pragma_tok,
 	    map_seen |= 1;
 	    error_at (OMP_CLAUSE_LOCATION (*pc),
 		      "%<#pragma omp target enter data%> with map-type other "
-		      "than %<to%> or %<alloc%> on %<map%> clause");
+		      "than %<to%>, %<tofrom%> or %<alloc%> on %<map%> clause");
 	    *pc = OMP_CLAUSE_CHAIN (*pc);
 	    continue;
 	  }
@@ -44537,6 +44545,14 @@ cp_parser_omp_target_exit_data (cp_parser *parser, cp_token *pragma_tok,
 	  case GOMP_MAP_DELETE:
 	    map_seen = 3;
 	    break;
+	  case GOMP_MAP_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_FROM);
+	    map_seen = 3;
+	    break;
+	  case GOMP_MAP_ALWAYS_TOFROM:
+	    OMP_CLAUSE_SET_MAP_KIND (*pc, GOMP_MAP_ALWAYS_FROM);
+	    map_seen = 3;
+	    break;
 	  case GOMP_MAP_FIRSTPRIVATE_POINTER:
 	  case GOMP_MAP_FIRSTPRIVATE_REFERENCE:
 	  case GOMP_MAP_ALWAYS_POINTER:
@@ -44546,8 +44562,8 @@ cp_parser_omp_target_exit_data (cp_parser *parser, cp_token *pragma_tok,
 	    map_seen |= 1;
 	    error_at (OMP_CLAUSE_LOCATION (*pc),
 		      "%<#pragma omp target exit data%> with map-type other "
-		      "than %<from%>, %<release%> or %<delete%> on %<map%>"
-		      " clause");
+		      "than %<from%>, %<tofrom%>, %<release%> or %<delete%> "
+		      "on %<map%> clause");
 	    *pc = OMP_CLAUSE_CHAIN (*pc);
 	    continue;
 	  }
diff --git a/gcc/fortran/dump-parse-tree.cc b/gcc/fortran/dump-parse-tree.cc
index e3affb8..85c0b98 100644
--- a/gcc/fortran/dump-parse-tree.cc
+++ b/gcc/fortran/dump-parse-tree.cc
@@ -1414,6 +1414,11 @@ show_omp_namelist (int list_type, gfc_omp_namelist *n)
 	  case OMP_MAP_TO: fputs ("to:", dumpfile); break;
 	  case OMP_MAP_FROM: fputs ("from:", dumpfile); break;
 	  case OMP_MAP_TOFROM: fputs ("tofrom:", dumpfile); break;
+	  case OMP_MAP_ALWAYS_TO: fputs ("always,to:", dumpfile); break;
+	  case OMP_MAP_ALWAYS_FROM: fputs ("always,from:", dumpfile); break;
+	  case OMP_MAP_ALWAYS_TOFROM: fputs ("always,tofrom:", dumpfile); break;
+	  case OMP_MAP_DELETE: fputs ("delete:", dumpfile); break;
+	  case OMP_MAP_RELEASE: fputs ("release:", dumpfile); break;
 	  default: break;
 	  }
       else if (list_type == OMP_LIST_LINEAR)
diff --git a/gcc/fortran/openmp.cc b/gcc/fortran/openmp.cc
index aeb8a43..93e40f2 100644
--- a/gcc/fortran/openmp.cc
+++ b/gcc/fortran/openmp.cc
@@ -7153,10 +7153,16 @@ resolve_omp_clauses (gfc_code *code, gfc_omp_clauses *omp_clauses,
 			case OMP_MAP_ALWAYS_TO:
 			case OMP_MAP_ALLOC:
 			  break;
+			case OMP_MAP_TOFROM:
+			  n->u.map_op = OMP_MAP_TO;
+			  break;
+			case OMP_MAP_ALWAYS_TOFROM:
+			  n->u.map_op = OMP_MAP_ALWAYS_TO;
+			  break;
 			default:
 			  gfc_error ("TARGET ENTER DATA with map-type other "
-				     "than TO, or ALLOC on MAP clause at %L",
-				     &n->where);
+				     "than TO, TOFROM or ALLOC on MAP clause "
+				     "at %L", &n->where);
 			  break;
 			}
 		      break;
@@ -7168,10 +7174,16 @@ resolve_omp_clauses (gfc_code *code, gfc_omp_clauses *omp_clauses,
 			case OMP_MAP_RELEASE:
 			case OMP_MAP_DELETE:
 			  break;
+			case OMP_MAP_TOFROM:
+			  n->u.map_op = OMP_MAP_FROM;
+			  break;
+			case OMP_MAP_ALWAYS_TOFROM:
+			  n->u.map_op = OMP_MAP_ALWAYS_FROM;
+			  break;
 			default:
 			  gfc_error ("TARGET EXIT DATA with map-type other "
-				     "than FROM, RELEASE, or DELETE on MAP "
-				     "clause at %L", &n->where);
+				     "than FROM, TOFROM, RELEASE, or DELETE on "
+				     "MAP clause at %L", &n->where);
 			  break;
 			}
 		      break;
diff --git a/gcc/testsuite/c-c++-common/gomp/target-data-2.c b/gcc/testsuite/c-c++-common/gomp/target-data-2.c
new file mode 100644
index 0000000..e324870
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/gomp/target-data-2.c
@@ -0,0 +1,20 @@
+/* { dg-additional-options "-fdump-tree-original" } */
+
+/* In OpenMP 5.2 permits tofrom for enter/exit data
+   in the FE, it is already converted to 'to' and 'from', respectively. */
+int x, y, z;
+
+void
+copyin ()
+{
+  #pragma omp target enter data map(x) map(tofrom: y) map(always, tofrom: z)
+}
+
+void
+copyout ()
+{
+  #pragma omp target exit data map(x) map(tofrom: y) map(always, tofrom: z)
+}
+
+/* { dg-final { scan-tree-dump-times "#pragma omp target enter data map\\(always,to:z\\) map\\(to:y\\) map\\(to:x\\)" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "#pragma omp target exit data map\\(always,from:z\\) map\\(from:y\\) map\\(from:x\\)" 1 "original" } } */
diff --git a/gcc/testsuite/c-c++-common/gomp/target-data-3.c b/gcc/testsuite/c-c++-common/gomp/target-data-3.c
new file mode 100644
index 0000000..8c6d5cb
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/gomp/target-data-3.c
@@ -0,0 +1,17 @@
+/* In OpenMP 5.2 permits tofrom for enter/exit data
+   in the FE, it is already converted to 'to' and 'from', respectively. */
+int y, z;
+
+void
+copyin ()
+{
+  #pragma omp target enter data map(from: y)         /* { dg-error "'#pragma omp target enter data' with map-type other than 'to', 'tofrom' or 'alloc' on 'map' clause" } */
+  #pragma omp target enter data map(always, from: z) /* { dg-error "'#pragma omp target enter data' with map-type other than 'to', 'tofrom' or 'alloc' on 'map' clause" } */
+}
+
+void
+copyout ()
+{
+  #pragma omp target exit data map(to: y)         /* { dg-error "'#pragma omp target exit data' with map-type other than 'from', 'tofrom', 'release' or 'delete' on 'map' clause" } */
+  #pragma omp target exit data map(always, to: z) /* { dg-error "'#pragma omp target exit data' with map-type other than 'from', 'tofrom', 'release' or 'delete' on 'map' clause" } */
+}
diff --git a/gcc/testsuite/gfortran.dg/gomp/target-data-1.f90 b/gcc/testsuite/gfortran.dg/gomp/target-data-1.f90
new file mode 100644
index 0000000..0f086f5
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/gomp/target-data-1.f90
@@ -0,0 +1,17 @@
+! { dg-additional-options "-fdump-tree-original" }
+!
+! In OpenMP 5.2 permits tofrom for enter/exit data
+! in the FE, it is already converted to 'to' and 'from', respectively.
+module m
+  integer :: x, y, z
+contains
+subroutine copyin
+  !$omp target enter data map(x) map(tofrom: y) map(always, tofrom: z)
+end
+subroutine copyout
+  !$omp target exit data map(x) map(tofrom: y) map(always, tofrom: z)
+end
+end
+
+! { dg-final { scan-tree-dump-times "#pragma omp target enter data map\\(to:x\\) map\\(to:y\\) map\\(always,to:z\\)" 1 "original" } }
+! { dg-final { scan-tree-dump-times "#pragma omp target exit data map\\(from:x\\) map\\(from:y\\) map\\(always,from:z\\)" 1 "original" } }
diff --git a/gcc/testsuite/gfortran.dg/gomp/target-data-2.f90 b/gcc/testsuite/gfortran.dg/gomp/target-data-2.f90
new file mode 100644
index 0000000..71ee1eb
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/gomp/target-data-2.f90
@@ -0,0 +1,14 @@
+! In OpenMP 5.2 permits tofrom for enter/exit data
+! in the FE, it is already converted to 'to' and 'from', respectively.
+module m
+  integer :: y, z
+contains
+subroutine copyin
+  !$omp target enter data map(from: y)         ! { dg-error "TARGET ENTER DATA with map-type other than TO, TOFROM or ALLOC on MAP clause" }
+  !$omp target enter data map(always, from: z) ! { dg-error "TARGET ENTER DATA with map-type other than TO, TOFROM or ALLOC on MAP clause" }
+end
+subroutine copyout
+  !$omp target exit data map(to: y)         ! { dg-error "TARGET EXIT DATA with map-type other than FROM, TOFROM, RELEASE, or DELETE on MAP clause" }
+  !$omp target exit data map(always, to: z) ! { dg-error "TARGET EXIT DATA with map-type other than FROM, TOFROM, RELEASE, or DELETE on MAP clause" }
+end
+end