flang/test/Lower/nullify.f90

   1 ! Test lowering of nullify-statement
   2 ! RUN: bbc -emit-fir %s -o - | FileCheck %s
   3
   4
   5 ! -----------------------------------------------------------------------------
   6 !     Test NULLIFY(p)
   7 ! -----------------------------------------------------------------------------
   8
   9
  10 ! CHECK-LABEL: func @_QPtest_scalar(
  11 ! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<f32>>>{{.*}})
  12 subroutine test_scalar(p)
  13   real, pointer :: p
  14   ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<f32>
  15   ! CHECK: %[[box:.*]] = fir.embox %[[null]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
  16   ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
  17   nullify(p)
  18 end subroutine
  19
  20 ! CHECK-LABEL: func @_QPtest_scalar_char(
  21 ! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>{{.*}})
  22 subroutine test_scalar_char(p)
  23   character(:), pointer :: p
  24   ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<!fir.char<1,?>>
  25   ! CHECK: %[[box:.*]] = fir.embox %[[null]] typeparams %c0{{.*}} : (!fir.ptr<!fir.char<1,?>>, index) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
  26   ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>
  27   nullify(p)
  28 end subroutine
  29
  30 ! CHECK-LABEL: func @_QPtest_array(
  31 ! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{.*}})
  32 subroutine test_array(p)
  33   real, pointer :: p(:)
  34   ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<!fir.array<?xf32>>
  35   ! CHECK: %[[shape:.*]] = fir.shape %c0{{.*}}
  36   ! CHECK: %[[box:.*]] = fir.embox %[[null]](%[[shape]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
  37   ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
  38   nullify(p)
  39 end subroutine
  40
  41 ! CHECK-LABEL: func @_QPtest_list(
  42 ! CHECK-SAME: %[[p1:.*]]: !fir.ref<!fir.box<!fir.ptr<f32>>>{{.*}}, %[[p2:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{.*}})
  43 subroutine test_list(p1, p2)
  44   real, pointer :: p1, p2(:)
  45   ! CHECK: fir.zero_bits !fir.ptr<f32>
  46   ! CHECK: fir.store %{{.*}} to %[[p1]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
  47
  48   ! CHECK: fir.zero_bits !fir.ptr<!fir.array<?xf32>>
  49   ! CHECK: fir.store %{{.*}} to %[[p2]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
  50   nullify(p1, p2)
  51 end subroutine