[flang] enable copy-in/out of assumed-rank arrays (#96080)

Just remove the TODO and add a test.

There is nothing special to do to deal with assumed-rank copy-in/out
after the previous copy-in/out API change in
#95822.

Author: jeanPerier

flang/lib/Lower/ConvertCall.cpp

@@ -1265,8 +1265,6 @@ static PreparedDummyArgument preparePresentUserCallActualArgument(
       preparedDummy.pushExprAssociateCleanUp(associate);
     } else if (mustDoCopyInOut) {
       // Copy-in non contiguous variables.
-      if (actualIsAssumedRank)
-        TODO(loc, "copy-in and copy-out of assumed-rank arguments");
       // TODO: for non-finalizable monomorphic derived type actual
       // arguments associated with INTENT(OUT) dummy arguments
       // we may avoid doing the copy and only allocate the temporary.

flang/test/Lower/HLFIR/assumed-rank-calls.f90

@@ -61,3 +61,40 @@ subroutine takes_assumed_rank_t(x)
 ! CHECK:           fir.call @_QPtakes_assumed_rank_t(%[[VAL_3]]) fastmath<contract> : (!fir.box<!fir.array<*:!fir.type<_QFtest_poly_to_nonepolyTt{i:i32}>>>) -> ()
 ! CHECK:           return
 ! CHECK:         }
+
+
+subroutine test_copy_in_out(x)
+  real ::  x(..)
+  interface
+    subroutine takes_contiguous(x)
+      real, contiguous :: x(..)
+    end subroutine
+  end interface
+  call takes_contiguous(x)
+end subroutine
+! CHECK-LABEL:   func.func @_QPtest_copy_in_out(
+! CHECK-SAME:                                   %[[VAL_0:.*]]: !fir.box<!fir.array<*:f32>> {fir.bindc_name = "x"}) {
+! CHECK:           %[[VAL_1:.*]] = fir.alloca !fir.box<!fir.heap<!fir.array<*:f32>>>
+! CHECK:           %[[VAL_2:.*]] = fir.dummy_scope : !fir.dscope
+! CHECK:           %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_2]] {uniq_name = "_QFtest_copy_in_outEx"} : (!fir.box<!fir.array<*:f32>>, !fir.dscope) -> (!fir.box<!fir.array<*:f32>>, !fir.box<!fir.array<*:f32>>)
+! CHECK:           %[[VAL_4:.*]]:2 = hlfir.copy_in %[[VAL_3]]#0 to %[[VAL_1]] : (!fir.box<!fir.array<*:f32>>, !fir.ref<!fir.box<!fir.heap<!fir.array<*:f32>>>>) -> (!fir.box<!fir.array<*:f32>>, i1)
+! CHECK:           fir.call @_QPtakes_contiguous(%[[VAL_4]]#0) fastmath<contract> : (!fir.box<!fir.array<*:f32>>) -> ()
+! CHECK:           hlfir.copy_out %[[VAL_1]], %[[VAL_4]]#1 to %[[VAL_3]]#0 : (!fir.ref<!fir.box<!fir.heap<!fir.array<*:f32>>>>, i1, !fir.box<!fir.array<*:f32>>) -> ()
+
+subroutine test_copy_in_out_2(x)
+  real ::  x(..)
+  interface
+    subroutine takes_contiguous_intentin(x)
+      real, intent(in), contiguous :: x(..)
+    end subroutine
+  end interface
+  call takes_contiguous_intentin(x)
+end subroutine
+! CHECK-LABEL:   func.func @_QPtest_copy_in_out_2(
+! CHECK-SAME:                                     %[[VAL_0:.*]]: !fir.box<!fir.array<*:f32>> {fir.bindc_name = "x"}) {
+! CHECK:           %[[VAL_1:.*]] = fir.alloca !fir.box<!fir.heap<!fir.array<*:f32>>>
+! CHECK:           %[[VAL_2:.*]] = fir.dummy_scope : !fir.dscope
+! CHECK:           %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0]] dummy_scope %[[VAL_2]] {uniq_name = "_QFtest_copy_in_out_2Ex"} : (!fir.box<!fir.array<*:f32>>, !fir.dscope) -> (!fir.box<!fir.array<*:f32>>, !fir.box<!fir.array<*:f32>>)
+! CHECK:           %[[VAL_4:.*]]:2 = hlfir.copy_in %[[VAL_3]]#0 to %[[VAL_1]] : (!fir.box<!fir.array<*:f32>>, !fir.ref<!fir.box<!fir.heap<!fir.array<*:f32>>>>) -> (!fir.box<!fir.array<*:f32>>, i1)
+! CHECK:           fir.call @_QPtakes_contiguous_intentin(%[[VAL_4]]#0) fastmath<contract> : (!fir.box<!fir.array<*:f32>>) -> ()
+! CHECK:           hlfir.copy_out %[[VAL_1]], %[[VAL_4]]#1 : (!fir.ref<!fir.box<!fir.heap<!fir.array<*:f32>>>>, i1) -> ()