[Flang][OpenMP][MLIR] Initial declare target to for variables implementation

While the infrastructure for declare target to/enter and link for variables exists in the MLIR dialect and at the Flang level, the current lowering from MLIR -> LLVM IR isn't in place, it's only in place for variables that have the link clause applied.

This PR aims to extend that lowering to an initial implementation that incorporates declare target to as well, which primarily requires changes in the OpenMPToLLVMIRTranslation phase. However, a minor addition to the OpenMP dialect was required to extend the declare target enumerator to include a default None field as well.

This also requires a minor change to the Flang lowering's MapInfoFinlization.cpp pass to alter the map type for descriptors to deal with cases where a variable is marked declare to. Currently, when a descriptor variable is mapped declare target to the descriptor component can become attatched, and cannot be updated, this results in issues when an unusual allocation range is specified (effectively an off-by X error). The current solution is to map the descriptor always, as we always require an up-to-date version of this data. However, this also requires an interlinked PR that adds a more intricate type of mapping of structures/record types that clang currently implements, to circumvent the overwriting of the pointer in the descriptor.

3/3 required PRs to enable declare target to mapping, this PR should pass all tests and provide an all green CI.

Co-authored-by: Raghu Maddhipatla [email protected]

Author: agozillon

flang/include/flang/Optimizer/Builder/FIRBuilder.h

@@ -969,6 +969,7 @@ void genLifetimeEnd(mlir::OpBuilder &builder, mlir::Location loc,
 mlir::Value getDescriptorWithNewBaseAddress(fir::FirOpBuilder &builder,
                                             mlir::Location loc, mlir::Value box,
                                             mlir::Value newAddr);
+
 } // namespace fir::factory
 
 #endif // FORTRAN_OPTIMIZER_BUILDER_FIRBUILDER_H

flang/lib/Optimizer/OpenMP/MapInfoFinalization.cpp

@@ -383,9 +383,21 @@ class MapInfoFinalizationPass
       return mapTypeFlag;
 
     mapFlags flags = mapFlags::OMP_MAP_TO |
-                     (mapFlags(mapTypeFlag) &
-                      (mapFlags::OMP_MAP_IMPLICIT | mapFlags::OMP_MAP_CLOSE |
-                       mapFlags::OMP_MAP_ALWAYS));
+                     (mapFlags(mapTypeFlag) & mapFlags::OMP_MAP_IMPLICIT);
+
+    // Descriptors for objects will always be copied. This is because the
+    // descriptor can be rematerialized by the compiler, and so the address
+    // of the descriptor for a given object at one place in the code may
+    // differ from that address in another place. The contents of the
+    // descriptor (the base address in particular) will remain unchanged
+    // though.
+    // TODO/FIXME: We currently cannot have MAP_CLOSE and MAP_ALWAYS on
+    // the descriptor at once, these are mutually exclusive and when
+    // both are applied the runtime will fail to map.
+    flags |= ((mapFlags(mapTypeFlag) & mapFlags::OMP_MAP_CLOSE) ==
+              mapFlags::OMP_MAP_CLOSE)
+                 ? mapFlags::OMP_MAP_CLOSE
+                 : mapFlags::OMP_MAP_ALWAYS;
     return llvm::to_underlying(flags);
   }
 

flang/test/Lower/OpenMP/DelayedPrivatization/target-private-allocatable.f90

@@ -60,7 +60,7 @@ end subroutine target_allocatable
 ! CHECK:  %[[VAR_DECL:.*]]:2 = hlfir.declare %[[VAR_ALLOC]]
 ! CHECK:  %[[BASE_ADDR:.*]] = fir.box_offset %[[VAR_DECL]]#0 base_addr : (!fir.ref<!fir.box<!fir.heap<i32>>>) -> [[MEMBER_TYPE:.*]]
 ! CHECK:  %[[MEMBER:.*]] = omp.map.info var_ptr(%[[VAR_DECL]]#0 : [[TYPE]], i32) map_clauses(to) capture(ByRef) var_ptr_ptr(%[[BASE_ADDR]] : [[MEMBER_TYPE:.*]]) -> {{.*}}
-! CHECK:  %[[MAP_VAR:.*]] = omp.map.info var_ptr(%[[VAR_DECL]]#0 : [[TYPE]], [[DESC_TYPE]]) map_clauses(to) capture(ByRef) members(%[[MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.heap<i32>>>
+! CHECK:  %[[MAP_VAR:.*]] = omp.map.info var_ptr(%[[VAR_DECL]]#0 : [[TYPE]], [[DESC_TYPE]]) map_clauses(always, to) capture(ByRef) members(%[[MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.heap<i32>>>
 
 ! CHECK:  omp.target map_entries(%[[MAP_VAR]] -> %arg0, %[[MEMBER]] -> %arg1 : [[TYPE]], [[MEMBER_TYPE]]) private(
 ! CHECK-SAME: @[[VAR_PRIVATIZER_SYM]] %[[VAR_DECL]]#0 -> %{{.*}} [map_idx=0] : [[TYPE]]) {

flang/test/Lower/OpenMP/DelayedPrivatization/target-teams-private-implicit-scalar-map.f90

@@ -28,7 +28,7 @@ program test_default_implicit_firstprivate
 !CHECK:           %[[VAL_9:.*]] = omp.map.info var_ptr(%[[VAL_4]] : !fir.ref<i32>, i32) map_clauses(implicit, exit_release_or_enter_alloc) capture(ByCopy) -> !fir.ref<i32> {name = "k"}
 !CHECK:           %[[VAL_10:.*]] = fir.box_offset %[[VAL_0]] base_addr : (!fir.ref<!fir.box<!fir.heap<!fir.array<?x?x?xi32>>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?x?x?xi32>>>
 !CHECK:           %[[VAL_11:.*]] = omp.map.info var_ptr(%[[VAL_0]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?x?x?xi32>>>>, i32) map_clauses(implicit, tofrom) capture(ByRef) var_ptr_ptr(%[[VAL_10]] : !fir.llvm_ptr<!fir.ref<!fir.array<?x?x?xi32>>>) bounds({{.*}}) -> !fir.llvm_ptr<!fir.ref<!fir.array<?x?x?xi32>>> {name = ""}
-!CHECK:           %[[VAL_12:.*]] = omp.map.info var_ptr(%[[VAL_0]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?x?x?xi32>>>>, !fir.box<!fir.heap<!fir.array<?x?x?xi32>>>) map_clauses(implicit, to) capture(ByRef) members(%[[VAL_11]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?x?x?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?x?x?xi32>>>> {name = "allocarr"}
+!CHECK:           %[[VAL_12:.*]] = omp.map.info var_ptr(%[[VAL_0]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?x?x?xi32>>>>, !fir.box<!fir.heap<!fir.array<?x?x?xi32>>>) map_clauses(always, implicit, to) capture(ByRef) members(%[[VAL_11]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?x?x?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?x?x?xi32>>>> {name = "allocarr"}
 !CHECK:           %[[VAL_13:.*]] = omp.map.info var_ptr(%[[VAL_1]] : !fir.ref<!fir.array<10x10x10xi32>>, !fir.array<10x10x10xi32>) map_clauses(implicit, tofrom) capture(ByRef) bounds({{.*}}) -> !fir.ref<!fir.array<10x10x10xi32>> {name = "arr"}
 !CHECK:           %[[VAL_14:.*]] = omp.map.info var_ptr(%[[VAL_6]] : !fir.ref<i32>, i32) map_clauses(to) capture(ByCopy) -> !fir.ref<i32>
 !CHECK:           %[[VAL_15:.*]] = omp.map.info var_ptr(%[[VAL_5]] : !fir.ref<i32>, i32) map_clauses(to) capture(ByCopy) -> !fir.ref<i32>

flang/test/Lower/OpenMP/allocatable-array-bounds.f90

@@ -24,7 +24,7 @@
 !HOST: %[[BOUNDS_1:.*]] = omp.map.bounds lower_bound(%[[LB_1]] : index) upper_bound(%[[UB_1]] : index) extent(%[[BOX_3]]#1 : index) stride(%[[BOX_2]]#2 : index) start_idx(%[[BOX_1]]#0 : index) {stride_in_bytes = true}
 !HOST: %[[VAR_PTR_PTR:.*]] = fir.box_offset %[[DECLARE_1]]#1 base_addr : (!fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
 !HOST: %[[MAP_INFO_MEMBER:.*]] = omp.map.info var_ptr(%[[DECLARE_1]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[VAR_PTR_PTR]] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) bounds(%[[BOUNDS_1]]) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>> {name = ""}
-!HOST: %[[MAP_INFO_1:.*]] = omp.map.info var_ptr(%[[DECLARE_1]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "sp_read(2:5)"}
+!HOST: %[[MAP_INFO_1:.*]] = omp.map.info var_ptr(%[[DECLARE_1]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(always, to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "sp_read(2:5)"}
 
 !HOST: %[[LOAD_3:.*]] = fir.load %[[DECLARE_2]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>
 !HOST: %[[LOAD_4:.*]] = fir.load %[[DECLARE_2]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>
@@ -42,7 +42,7 @@
 !HOST: %[[BOUNDS_2:.*]] = omp.map.bounds lower_bound(%[[LB_2]] : index) upper_bound(%[[UB_2]] : index) extent(%[[BOX_5]]#1 : index) stride(%[[BOX_4]]#2 : index) start_idx(%[[BOX_3]]#0 : index) {stride_in_bytes = true}
 !HOST: %[[VAR_PTR_PTR:.*]] = fir.box_offset %[[DECLARE_2]]#1 base_addr : (!fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
 !HOST: %[[MAP_INFO_MEMBER:.*]] = omp.map.info var_ptr(%[[DECLARE_2]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[VAR_PTR_PTR]] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) bounds(%[[BOUNDS_2]]) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>> {name = ""}
-!HOST: %[[MAP_INFO_2:.*]] = omp.map.info var_ptr(%[[DECLARE_2]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "sp_write(2:5)"}
+!HOST: %[[MAP_INFO_2:.*]] = omp.map.info var_ptr(%[[DECLARE_2]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(always, to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "sp_write(2:5)"}
 
 subroutine read_write_section()
     integer, allocatable :: sp_read(:)
@@ -81,8 +81,7 @@ module assumed_allocatable_array_routines
 !HOST: %[[BOUNDS:.*]] = omp.map.bounds lower_bound(%[[LB]] : index) upper_bound(%[[UB]] : index) extent(%[[BOX_3]]#1 : index) stride(%[[BOX_2]]#2 : index) start_idx(%[[BOX_1]]#0 : index) {stride_in_bytes = true}
 !HOST: %[[VAR_PTR_PTR:.*]] = fir.box_offset %[[DECLARE]]#1 base_addr : (!fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
 !HOST: %[[MAP_INFO_MEMBER:.*]] = omp.map.info var_ptr(%[[DECLARE]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[VAR_PTR_PTR]] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) bounds(%[[BOUNDS]]) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>> {name = ""}
-!HOST: %[[MAP_INFO:.*]] = omp.map.info var_ptr(%[[DECLARE]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "arr_read_write(2:5)"}
-
+!HOST: %[[MAP_INFO:.*]] = omp.map.info var_ptr(%[[DECLARE]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(always, to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "arr_read_write(2:5)"}
 subroutine assumed_shape_array(arr_read_write)
     integer, allocatable, intent(inout) :: arr_read_write(:)
 

flang/test/Lower/OpenMP/allocatable-map.f90

@@ -3,7 +3,7 @@
 !HLFIRDIALECT: %[[POINTER:.*]]:2 = hlfir.declare %{{.*}} {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFpointer_routineEpoint"} : (!fir.ref<!fir.box<!fir.ptr<i32>>>) -> (!fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.ref<!fir.box<!fir.ptr<i32>>>)
 !HLFIRDIALECT: %[[BOX_OFF:.*]] = fir.box_offset %[[POINTER]]#1 base_addr : (!fir.ref<!fir.box<!fir.ptr<i32>>>) -> !fir.llvm_ptr<!fir.ref<i32>>
 !HLFIRDIALECT: %[[POINTER_MAP_MEMBER:.*]] = omp.map.info var_ptr(%[[POINTER]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[BOX_OFF]] : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.llvm_ptr<!fir.ref<i32>> {name = ""}
-!HLFIRDIALECT: %[[POINTER_MAP:.*]] = omp.map.info var_ptr(%[[POINTER]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.box<!fir.ptr<i32>>) map_clauses(to) capture(ByRef) members(%[[POINTER_MAP_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>> {name = "point"}
+!HLFIRDIALECT: %[[POINTER_MAP:.*]] = omp.map.info var_ptr(%[[POINTER]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.box<!fir.ptr<i32>>) map_clauses(always, to) capture(ByRef) members(%[[POINTER_MAP_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>> {name = "point"}
 !HLFIRDIALECT: omp.target map_entries(%[[POINTER_MAP]] -> {{.*}}, %[[POINTER_MAP_MEMBER]] -> {{.*}} : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.llvm_ptr<!fir.ref<i32>>) {
 subroutine pointer_routine()
     integer, pointer :: point 

flang/test/Lower/OpenMP/array-bounds.f90

@@ -52,7 +52,7 @@ module assumed_array_routines
 !HOST: %[[BOUNDS:.*]] = omp.map.bounds   lower_bound(%[[C3]] : index) upper_bound(%[[C4]] : index) extent(%[[DIMS1]]#1 : index) stride(%[[DIMS0]]#2 : index) start_idx(%[[C0]] : index) {stride_in_bytes = true}
 !HOST: %[[VAR_PTR_PTR:.*]] = fir.box_offset %[[INTERMEDIATE_ALLOCA]] base_addr : (!fir.ref<!fir.box<!fir.array<?xi32>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
 !HOST: %[[MAP_INFO_MEMBER:.*]] = omp.map.info var_ptr(%[[INTERMEDIATE_ALLOCA]] : !fir.ref<!fir.box<!fir.array<?xi32>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[VAR_PTR_PTR]] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) bounds(%[[BOUNDS]]) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>> {name = ""}
-!HOST: %[[MAP:.*]] = omp.map.info var_ptr(%[[INTERMEDIATE_ALLOCA]] : !fir.ref<!fir.box<!fir.array<?xi32>>>, !fir.box<!fir.array<?xi32>>) map_clauses(to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.array<?xi32>> {name = "arr_read_write(2:5)"}
+!HOST: %[[MAP:.*]] = omp.map.info var_ptr(%[[INTERMEDIATE_ALLOCA]] : !fir.ref<!fir.box<!fir.array<?xi32>>>, !fir.box<!fir.array<?xi32>>) map_clauses(always, to) capture(ByRef) members(%[[MAP_INFO_MEMBER]] : [0] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<!fir.array<?xi32>> {name = "arr_read_write(2:5)"}
 !HOST: omp.target   map_entries(%[[MAP]] -> %{{.*}}, {{.*}} -> {{.*}}, %[[MAP_INFO_MEMBER]] -> %{{.*}} : !fir.ref<!fir.array<?xi32>>, !fir.ref<i32>, !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) {
     subroutine assumed_shape_array(arr_read_write)
             integer, intent(inout) :: arr_read_write(:)

flang/test/Lower/OpenMP/declare-mapper.f90

@@ -45,7 +45,7 @@ subroutine declare_mapper_1
    !CHECK:        %[[VAL_18:.*]] = fir.coordinate_of %[[VAL_1]]#0, values : (!fir.ref<[[MY_TYPE]]>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>
    !CHECK:        %[[VAL_19:.*]] = fir.box_offset %[[VAL_18]] base_addr : (!fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
    !CHECK:        %[[VAL_20:.*]] = omp.map.info var_ptr(%[[VAL_18]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[VAL_19]] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) bounds(%[[VAL_16]]) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>> {name = ""}
-   !CHECK:        %[[VAL_21:.*]] = omp.map.info var_ptr(%[[VAL_18]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(to) capture(ByRef) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "var%[[VAL_22:.*]](1:var%[[VAL_23:.*]])"}
+   !CHECK:        %[[VAL_21:.*]] = omp.map.info var_ptr(%[[VAL_18]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(always, to) capture(ByRef) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "var%[[VAL_22:.*]](1:var%[[VAL_23:.*]])"}
    !CHECK:        %[[VAL_24:.*]] = omp.map.info var_ptr(%[[VAL_1]]#1 : !fir.ref<[[MY_TYPE]]>, [[MY_TYPE]]) map_clauses(tofrom) capture(ByRef) members(%[[VAL_21]], %[[VAL_20]] : [1], [1, 0] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<[[MY_TYPE]]> {name = "var"}
    !CHECK:        omp.declare_mapper.info map_entries(%[[VAL_24]], %[[VAL_21]], %[[VAL_20]] : !fir.ref<[[MY_TYPE]]>, !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>)
    !CHECK:      }
@@ -137,7 +137,7 @@ subroutine declare_mapper_3
    !CHECK:     %[[VAL_18:.*]] = fir.coordinate_of %[[VAL_1]]#0, values : (!fir.ref<[[MY_TYPE]]>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>
    !CHECK:     %[[VAL_19:.*]] = fir.box_offset %[[VAL_18]] base_addr : (!fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
    !CHECK:     %[[VAL_20:.*]] = omp.map.info var_ptr(%[[VAL_18]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, i32) map_clauses(tofrom) capture(ByRef) var_ptr_ptr(%[[VAL_19]] : !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) bounds(%[[VAL_16]]) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>> {name = ""}
-   !CHECK:     %[[VAL_21:.*]] = omp.map.info var_ptr(%[[VAL_18]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(to) capture(ByRef) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "var%[[VAL_22:.*]](1:var%[[VAL_23:.*]])"}
+   !CHECK:     %[[VAL_21:.*]] = omp.map.info var_ptr(%[[VAL_18]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.box<!fir.heap<!fir.array<?xi32>>>) map_clauses(always, to) capture(ByRef) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>> {name = "var%[[VAL_22:.*]](1:var%[[VAL_23:.*]])"}
    !CHECK:     %[[VAL_24:.*]] = omp.map.info var_ptr(%[[VAL_1]]#1 : !fir.ref<[[MY_TYPE]]>, [[MY_TYPE]]) map_clauses(tofrom) capture(ByRef) members(%[[VAL_21]], %[[VAL_20]] : [1], [1, 0] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>) -> !fir.ref<[[MY_TYPE]]> {name = "var"}
    !CHECK:     omp.declare_mapper.info map_entries(%[[VAL_24]], %[[VAL_21]], %[[VAL_20]] : !fir.ref<[[MY_TYPE]]>, !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>, !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>)
    !CHECK:  }

flang/test/Lower/OpenMP/declare-target-link-tarop-cap.f90

@@ -35,7 +35,7 @@ program test_link
 
   allocate(test_ptr1)
   test_ptr1 = 1
-  !CHECK-DAG: {{%.*}} = omp.map.info var_ptr({{%.*}} : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.box<!fir.ptr<i32>>) map_clauses(implicit, to) capture(ByRef) members({{%.*}} : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>> {name = "test_ptr1"}
+  !CHECK-DAG: {{%.*}} = omp.map.info var_ptr({{%.*}} : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.box<!fir.ptr<i32>>) map_clauses(always, implicit, to) capture(ByRef) members({{%.*}} : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>> {name = "test_ptr1"}
   !$omp target
     test_ptr1 = test_ptr1 + 1
   !$omp end target
@@ -46,7 +46,7 @@ program test_link
   !$omp end target
 
 
-  !CHECK-DAG: {{%.*}} = omp.map.info var_ptr({{%.*}} : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.box<!fir.ptr<i32>>) map_clauses(implicit, to) capture(ByRef) members({{%.*}} : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>> {name = "test_ptr2"}
+  !CHECK-DAG: {{%.*}} = omp.map.info var_ptr({{%.*}} : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.box<!fir.ptr<i32>>) map_clauses(always, implicit, to) capture(ByRef) members({{%.*}} : !fir.llvm_ptr<!fir.ref<i32>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>> {name = "test_ptr2"}
   test_ptr2 => test_target
   !$omp target
     test_ptr2 = test_ptr2 + 1