flang/test/Lower/HLFIR/associate-construct.f90

   1 ! Test lowering of associate construct to HLFIR
   2 ! RUN: bbc -emit-hlfir -o - %s | FileCheck %s
   3
   4 subroutine associate_expr(x)
   5   integer :: x(:)
   6   associate(y => x + 42)
   7     print *, y
   8   end associate
   9 end subroutine
  10 ! CHECK-LABEL: func.func @_QPassociate_expr(
  11 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare {{.*}}Ex"
  12 ! CHECK:  %[[VAL_3:.*]] = arith.constant 0 : index
  13 ! CHECK:  %[[VAL_4:.*]]:3 = fir.box_dims %[[VAL_1]]#0, %[[VAL_3]] : (!fir.box<!fir.array<?xi32>>, index) -> (index, index, index)
  14 ! CHECK:  %[[VAL_6:.*]] = hlfir.elemental {{.*}}
  15 ! CHECK:  %[[VAL_11:.*]]:3 = hlfir.associate %[[VAL_6]]{{.*}}
  16 ! CHECK:  %[[VAL_13:.*]] = fir.shape %[[VAL_4]]#1 : (index) -> !fir.shape<1>
  17 ! CHECK:  %[[VAL_14:.*]]:2 = hlfir.declare %[[VAL_11]]#1(%[[VAL_13]]) {uniq_name = "_QFassociate_exprEy"} : (!fir.ref<!fir.array<?xi32>>, !fir.shape<1>) -> (!fir.box<!fir.array<?xi32>>, !fir.ref<!fir.array<?xi32>>)
  18 ! CHECK:  fir.call @_FortranAioEndIoStatement
  19 ! CHECK:  hlfir.end_associate %[[VAL_11]]#1, %[[VAL_11]]#2 : !fir.ref<!fir.array<?xi32>>, i1
  20
  21 subroutine associate_var(x)
  22   integer :: x
  23   associate(y => x)
  24     print *, y
  25   end associate
  26 end subroutine
  27 ! CHECK-LABEL: func.func @_QPassociate_var(
  28 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare {{.*}}Ex"
  29 ! CHECK:  %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_1]]#1 {uniq_name = "_QFassociate_varEy"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
  30 ! CHECK:  fir.call @_FortranAioEndIoStatement
  31 ! CHECK-NEXT:  return
  32
  33 subroutine associate_pointer(x)
  34   integer, pointer, contiguous :: x(:)
  35   ! Check that "y" has the target attribute.
  36   associate(y => x)
  37     print *, y
  38   end associate
  39 end subroutine
  40 ! CHECK-LABEL: func.func @_QPassociate_pointer(
  41 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare {{.*}}Ex"
  42 ! CHECK:  %[[VAL_2:.*]] = fir.load %[[VAL_1]]#0 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xi32>>>>
  43 ! CHECK:  %[[VAL_3:.*]] = fir.box_addr %[[VAL_2]] : (!fir.box<!fir.ptr<!fir.array<?xi32>>>) -> !fir.ptr<!fir.array<?xi32>>
  44 ! CHECK:  %[[VAL_4:.*]] = arith.constant 0 : index
  45 ! CHECK:  %[[VAL_5:.*]]:3 = fir.box_dims %[[VAL_2]], %[[VAL_4]] : (!fir.box<!fir.ptr<!fir.array<?xi32>>>, index) -> (index, index, index)
  46 ! CHECK:  %[[VAL_6:.*]] = fir.shape_shift %[[VAL_5]]#0, %[[VAL_5]]#1 : (index, index) -> !fir.shapeshift<1>
  47 ! CHECK:  %[[VAL_7:.*]]:2 = hlfir.declare %[[VAL_3]](%[[VAL_6]]) {fortran_attrs = #fir.var_attrs<target>, uniq_name = "_QFassociate_pointerEy"} : (!fir.ptr<!fir.array<?xi32>>, !fir.shapeshift<1>) -> (!fir.box<!fir.array<?xi32>>, !fir.ptr<!fir.array<?xi32>>)
  48 ! CHECK:  fir.call @_FortranAioEndIoStatement
  49 ! CHECK-NEXT:  return
  50
  51 subroutine associate_allocatable(x)
  52   integer, allocatable :: x(:)
  53   associate(y => x)
  54     print *, y
  55   end associate
  56 end subroutine
  57 ! CHECK-LABEL: func.func @_QPassociate_allocatable(
  58 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare {{.*}}Ex"
  59 ! CHECK:  %[[VAL_2:.*]] = fir.load %[[VAL_1]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>
  60 ! CHECK:  %[[VAL_3:.*]] = fir.box_addr %[[VAL_2]] : (!fir.box<!fir.heap<!fir.array<?xi32>>>) -> !fir.heap<!fir.array<?xi32>>
  61 ! CHECK:  %[[VAL_4:.*]] = arith.constant 0 : index
  62 ! CHECK:  %[[VAL_5:.*]]:3 = fir.box_dims %[[VAL_2]], %[[VAL_4]] : (!fir.box<!fir.heap<!fir.array<?xi32>>>, index) -> (index, index, index)
  63 ! CHECK:  %[[VAL_6:.*]] = fir.shape_shift %[[VAL_5]]#0, %[[VAL_5]]#1 : (index, index) -> !fir.shapeshift<1>
  64 ! CHECK:  %[[VAL_7:.*]]:2 = hlfir.declare %[[VAL_3]](%[[VAL_6]]) {uniq_name = "_QFassociate_allocatableEy"} : (!fir.heap<!fir.array<?xi32>>, !fir.shapeshift<1>) -> (!fir.box<!fir.array<?xi32>>, !fir.heap<!fir.array<?xi32>>)
  65 ! CHECK:  fir.call @_FortranAioEndIoStatement
  66 ! CHECK-NEXT:  return
  67
  68 subroutine associate_optional(x)
  69   integer, optional :: x(:)
  70   ! Check that "y" is not given the optional attribute: x must be present as per
  71   ! Fortran 2018 11.1.3.2 point 4.
  72   associate(y => x)
  73     print *, y
  74   end associate
  75 end subroutine
  76 ! CHECK-LABEL: func.func @_QPassociate_optional(
  77 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare {{.*}}Ex"
  78 ! CHECK:  %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_1]]#1 {uniq_name = "_QFassociate_optionalEy"} : (!fir.box<!fir.array<?xi32>>) -> (!fir.box<!fir.array<?xi32>>, !fir.box<!fir.array<?xi32>>)
  79 ! CHECK:  fir.call @_FortranAioEndIoStatement
  80 ! CHECK-NEXT:  return
  81
  82 subroutine associate_pointer_section(x)
  83   integer , pointer, contiguous :: x(:)
  84   associate (y => x(1:20:1))
  85     print *, y
  86   end associate
  87 end subroutine
  88 ! CHECK-LABEL: func.func @_QPassociate_pointer_section(
  89 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare {{.*}}Ex"
  90 ! CHECK:  %[[VAL_2:.*]] = fir.load %[[VAL_1]]#0 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xi32>>>>
  91 ! CHECK:  %[[VAL_4:.*]] = arith.constant 20 : index
  92 ! CHECK:  %[[VAL_6:.*]] = arith.constant 20 : index
  93 ! CHECK:  %[[VAL_8:.*]] = hlfir.designate %[[VAL_2]]{{.*}}
  94 ! CHECK:  %[[VAL_9:.*]] = fir.shape %[[VAL_6]] : (index) -> !fir.shape<1>
  95 ! CHECK:  %[[VAL_10:.*]]:2 = hlfir.declare %[[VAL_8]](%[[VAL_9]]) {fortran_attrs = #fir.var_attrs<target>, uniq_name = "_QFassociate_pointer_sectionEy"} : (!fir.ref<!fir.array<20xi32>>, !fir.shape<1>) -> (!fir.ref<!fir.array<20xi32>>, !fir.ref<!fir.array<20xi32>>)
  96 ! CHECK:  fir.call @_FortranAioEndIoStatement
  97 ! CHECK-NEXT:  return