llvm/flang/test/Lower/Intrinsics/system-optional.f90

! RUN: bbc -emit-hlfir %s -o - | FileCheck %s

! CHECK-LABEL: func.func @_QPall_args(
! CHECK-SAME:   %[[commandArg:.*]]: !fir.boxchar<1> {fir.bindc_name = "command", fir.optional},
! CHECK-SAME:   %[[exitstatArg:.*]]: !fir.ref<i32> {fir.bindc_name = "exitstat", fir.optional}) {
subroutine all_args(command, exitstat)
CHARACTER(*), OPTIONAL :: command
INTEGER, OPTIONAL :: exitstat
call system(command, exitstat)

! CHECK-NEXT:    %[[cmdstatVal:.*]] = fir.alloca i16
! CHECK-NEXT:    %[[DSCOPE:.*]] = fir.dummy_scope : !fir.dscope
! CHECK-NEXT:    %[[commandUnbox:.*]]:2 = fir.unboxchar %[[commandArg]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
! CHECK-NEXT:    %[[commandDeclare:.*]]:2 = hlfir.declare %[[commandUnbox]]#0 typeparams %[[commandUnbox]]#1 dummy_scope %[[DSCOPE]] {fortran_attrs = #fir.var_attrs<optional>, uniq_name = "_QFall_argsEcommand"} : (!fir.ref<!fir.char<1,?>>, index, !fir.dscope) -> (!fir.boxchar<1>, !fir.ref<!fir.char<1,?>>)
! CHECK-NEXT:    %[[exitstatDeclare:.*]]:2 = hlfir.declare %[[exitstatArg]] dummy_scope %[[DSCOPE]] {fortran_attrs = #fir.var_attrs<optional>, uniq_name = "_QFall_argsEexitstat"} : (!fir.ref<i32>, !fir.dscope) -> (!fir.ref<i32>, !fir.ref<i32>)
! CHECK-NEXT:    %[[exitstatIsPresent:.*]] = fir.is_present %[[exitstatDeclare]]#0 : (!fir.ref<i32>) -> i1
! CHECK-NEXT:    %[[commandBox:.*]] = fir.embox %[[commandDeclare]]#1 typeparams %[[commandUnbox]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
! CHECK-NEXT:    %[[exitstatBox:.*]] = fir.embox %[[exitstatDeclare]]#1 : (!fir.ref<i32>) -> !fir.box<i32>
! CHECK-NEXT:    %[[absentIntBox:.*]] = fir.absent !fir.box<i32>
! CHECK-NEXT:    %[[exitstatRealBox:.*]] = arith.select %[[exitstatIsPresent]], %[[exitstatBox]], %[[absentIntBox]] : !fir.box<i32>
! CHECK-NEXT:    %[[true:.*]] = arith.constant true
! CHECK-NEXT:    %[[c0_i16:.*]] = arith.constant 0 : i16
! CHECK-NEXT:    fir.store %[[c0_i16]] to %[[cmdstatVal]] : !fir.ref<i16>
! CHECK-NEXT:    %[[cmdstatBox:.*]] = fir.embox %[[cmdstatVal]] : (!fir.ref<i16>) -> !fir.box<i16>
! CHECK-NEXT:    %[[absentBox:.*]] = fir.absent !fir.box<none>
! CHECK:         %[[c9_i32:.*]] = arith.constant 9 : i32
! CHECK-NEXT:    %[[command:.*]] = fir.convert %[[commandBox]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
! CHECK-NEXT:    %[[exitstat:.*]] = fir.convert %[[exitstatRealBox]] : (!fir.box<i32>) -> !fir.box<none>
! CHECK-NEXT:    %[[cmdstat:.*]] = fir.convert %[[cmdstatBox]] : (!fir.box<i16>) -> !fir.box<none>
! CHECK:         %[[VAL_16:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %[[true]], %[[exitstat]], %[[cmdstat]], %[[absentBox]], %[[VAL_15:.*]], %[[c9_i32]]) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
! CHECK-NEXT:    return
! CHECK-NEXT:      }

end subroutine all_args