flang/test/Lower/HLFIR/allocatable-and-pointer-status-change.f90

   1 ! Test lowering of allocate, deallocate and pointer assignment statements to
   2 ! HLFIR.
   3 ! RUN: bbc -emit-fir -hlfir -o - %s -I nw | FileCheck %s
   4
   5 subroutine allocation(x)
   6   character(*), allocatable :: x(:)
   7 ! CHECK-LABEL: func.func @_QPallocation(
   8 ! CHECK:  %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0:[a-z0-9]*]] typeparams %[[VAL_2:[a-z0-9]*]] {fortran_attrs = #fir.var_attrs<allocatable>,  {{.*}}Ex
   9   deallocate(x)
  10 ! CHECK:  %[[VAL_4:.*]] = fir.load %[[VAL_3]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  11 ! CHECK:  %[[VAL_5:.*]] = fir.box_addr %[[VAL_4]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>) -> !fir.heap<!fir.array<?x!fir.char<1,?>>>
  12 ! CHECK:  fir.freemem %[[VAL_5]] : !fir.heap<!fir.array<?x!fir.char<1,?>>>
  13 ! CHECK:  %[[VAL_6:.*]] = fir.zero_bits !fir.heap<!fir.array<?x!fir.char<1,?>>>
  14 ! CHECK:  %[[VAL_7:.*]] = arith.constant 0 : index
  15 ! CHECK:  %[[VAL_8:.*]] = fir.shape %[[VAL_7]] : (index) -> !fir.shape<1>
  16 ! CHECK:  %[[VAL_9:.*]] = fir.embox %[[VAL_6]](%[[VAL_8]]) typeparams %[[VAL_2]] : (!fir.heap<!fir.array<?x!fir.char<1,?>>>, !fir.shape<1>, index) -> !fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>
  17   allocate(x(100))
  18 ! CHECK:  %[[VAL_10:.*]] = arith.constant 100 : i32
  19 ! CHECK:  %[[VAL_11:.*]] = fir.convert %[[VAL_10]] : (i32) -> index
  20 ! CHECK:  %[[VAL_12:.*]] = arith.constant 0 : index
  21 ! CHECK:  %[[VAL_13:.*]] = arith.cmpi sgt, %[[VAL_11]], %[[VAL_12]] : index
  22 ! CHECK:  %[[VAL_14:.*]] = arith.select %[[VAL_13]], %[[VAL_11]], %[[VAL_12]] : index
  23 ! CHECK:  %[[VAL_15:.*]] = fir.allocmem !fir.array<?x!fir.char<1,?>>(%[[VAL_2]] : index), %[[VAL_14]] {fir.must_be_heap = true, uniq_name = "_QFallocationEx.alloc"}
  24 ! CHECK:  %[[VAL_16:.*]] = fir.shape %[[VAL_14]] : (index) -> !fir.shape<1>
  25 ! CHECK:  %[[VAL_17:.*]] = fir.embox %[[VAL_15]](%[[VAL_16]]) typeparams %[[VAL_2]] : (!fir.heap<!fir.array<?x!fir.char<1,?>>>, !fir.shape<1>, index) -> !fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>
  26 ! CHECK:  fir.store %[[VAL_17]] to %[[VAL_3]]#1 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  27 end subroutine
  28
  29 subroutine pointer_assignment(p, ziel)
  30   real, pointer :: p(:)
  31   real, target :: ziel(42:)
  32 ! CHECK-LABEL: func.func @_QPpointer_assignment(
  33 ! CHECK:  %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0:[a-z0-9]*]] {fortran_attrs = #fir.var_attrs<pointer>,  {{.*}}Ep
  34 ! CHECK:  %[[VAL_6:.*]]:2 = hlfir.declare %[[VAL_1:[a-z0-9]*]](%[[VAL_5:[a-z0-9]*]]) {fortran_attrs = #fir.var_attrs<target>,  {{.*}}Eziel
  35   p => ziel
  36 ! CHECK:  %[[VAL_7:.*]] = fir.shift %[[VAL_4:.*]] : (index) -> !fir.shift<1>
  37 ! CHECK:  %[[VAL_8:.*]] = fir.rebox %[[VAL_6]]#1(%[[VAL_7]]) : (!fir.box<!fir.array<?xf32>>, !fir.shift<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
  38 ! CHECK:  fir.store %[[VAL_8]] to %[[VAL_2]]#1 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
  39   p => ziel(42:77:3)
  40 ! CHECK:  %[[VAL_14:.*]] = hlfir.designate %{{.*}}#0 (%{{.*}}:%{{.*}}:%{{.*}})  shape %{{.*}} : (!fir.box<!fir.array<?xf32>>, index, index, index, !fir.shape<1>) -> !fir.box<!fir.array<12xf32>>
  41 ! CHECK:  %[[VAL_15:.*]] = fir.rebox %[[VAL_14]] : (!fir.box<!fir.array<12xf32>>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
  42 ! CHECK:  fir.store %[[VAL_15]] to %[[VAL_2]]#1 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
  43 end subroutine
  44
  45 subroutine pointer_remapping(p, ziel)
  46   real, pointer :: p(:, :)
  47   real, target :: ziel(10, 20, 30)
  48 ! CHECK-LABEL: func.func @_QPpointer_remapping(
  49 ! CHECK:  %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_0:[a-z0-9]*]] {fortran_attrs = #fir.var_attrs<pointer>,  {{.*}}Ep
  50 ! CHECK:  %[[VAL_7:.*]]:2 = hlfir.declare %[[VAL_1:[a-z0-9]*]](%[[VAL_6:[a-z0-9]*]]) {fortran_attrs = #fir.var_attrs<target>,  {{.*}}Eziel
  51   p(2:7, 3:102) => ziel
  52 ! CHECK:  %[[VAL_8:.*]] = arith.constant 2 : i64
  53 ! CHECK:  %[[VAL_9:.*]] = arith.constant 7 : i64
  54 ! CHECK:  %[[VAL_10:.*]] = arith.constant 3 : i64
  55 ! CHECK:  %[[VAL_11:.*]] = arith.constant 102 : i64
  56 ! CHECK:  %[[VAL_12:.*]] = arith.constant 1 : index
  57 ! CHECK:  %[[VAL_13:.*]] = fir.convert %[[VAL_8]] : (i64) -> index
  58 ! CHECK:  %[[VAL_14:.*]] = fir.convert %[[VAL_9]] : (i64) -> index
  59 ! CHECK:  %[[VAL_15:.*]] = arith.subi %[[VAL_14]], %[[VAL_13]] : index
  60 ! CHECK:  %[[VAL_16:.*]] = arith.addi %[[VAL_15]], %[[VAL_12]] : index
  61 ! CHECK:  %[[VAL_17:.*]] = fir.convert %[[VAL_10]] : (i64) -> index
  62 ! CHECK:  %[[VAL_18:.*]] = fir.convert %[[VAL_11]] : (i64) -> index
  63 ! CHECK:  %[[VAL_19:.*]] = arith.subi %[[VAL_18]], %[[VAL_17]] : index
  64 ! CHECK:  %[[VAL_20:.*]] = arith.addi %[[VAL_19]], %[[VAL_12]] : index
  65 ! CHECK:  %[[VAL_21:.*]] = fir.convert %[[VAL_7]]#1 : (!fir.ref<!fir.array<10x20x30xf32>>) -> !fir.ref<!fir.array<?x?xf32>>
  66 ! CHECK:  %[[VAL_22:.*]] = fir.shape_shift %[[VAL_8]], %[[VAL_16]], %[[VAL_10]], %[[VAL_20]] : (i64, index, i64, index) -> !fir.shapeshift<2>
  67 ! CHECK:  %[[VAL_23:.*]] = fir.embox %[[VAL_21]](%[[VAL_22]]) : (!fir.ref<!fir.array<?x?xf32>>, !fir.shapeshift<2>) -> !fir.box<!fir.ptr<!fir.array<?x?xf32>>>
  68 ! CHECK:  fir.store %[[VAL_23]] to %[[VAL_2]]#1 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>
  69 end subroutine
  70
  71 subroutine alloc_comp(x)
  72   type t
  73      real, allocatable :: a(:)
  74   end type
  75   type(t) :: x(10)
  76 ! CHECK-LABEL: func.func @_QPalloc_comp(
  77 ! CHECK:  %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0:[a-z0-9]*]](%[[VAL_2:[a-z0-9]*]]) {{.*}}Ex
  78   allocate(x(10_8)%a(100_8))
  79 ! CHECK:  %[[VAL_4:.*]] = arith.constant 10 : index
  80 ! CHECK:  %[[VAL_5:.*]] = hlfir.designate %[[VAL_3]]#0 (%[[VAL_4]])  : (!fir.ref<!fir.array<10x!fir.type<_QFalloc_compTt{a:!fir.box<!fir.heap<!fir.array<?xf32>>>}>>>, index) -> !fir.ref<!fir.type<_QFalloc_compTt{a:!fir.box<!fir.heap<!fir.array<?xf32>>>}>>
  81 ! CHECK:  %[[VAL_6:.*]] = hlfir.designate %[[VAL_5]]{"a"}   {fortran_attrs = #fir.var_attrs<allocatable>} : (!fir.ref<!fir.type<_QFalloc_compTt{a:!fir.box<!fir.heap<!fir.array<?xf32>>>}>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?xf32>>>>
  82 ! CHECK:  %[[VAL_7:.*]] = arith.constant 100 : i64
  83 ! CHECK:  %[[VAL_8:.*]] = fir.convert %[[VAL_7]] : (i64) -> index
  84 ! CHECK:  %[[VAL_9:.*]] = arith.constant 0 : index
  85 ! CHECK:  %[[VAL_10:.*]] = arith.cmpi sgt, %[[VAL_8]], %[[VAL_9]] : index
  86 ! CHECK:  %[[VAL_11:.*]] = arith.select %[[VAL_10]], %[[VAL_8]], %[[VAL_9]] : index
  87 ! CHECK:  %[[VAL_12:.*]] = fir.allocmem !fir.array<?xf32>, %[[VAL_11]] {fir.must_be_heap = true, uniq_name = "_QFalloc_compEa.alloc"}
  88 ! CHECK:  %[[VAL_13:.*]] = fir.shape %[[VAL_11]] : (index) -> !fir.shape<1>
  89 ! CHECK:  %[[VAL_14:.*]] = fir.embox %[[VAL_12]](%[[VAL_13]]) : (!fir.heap<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.heap<!fir.array<?xf32>>>
  90 ! CHECK:  fir.store %[[VAL_14]] to %[[VAL_6]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?xf32>>>>
  91 end subroutine
  92
  93 subroutine ptr_comp_assign(x, ziel)
  94   type t
  95      real, pointer :: p(:)
  96   end type
  97   type(t) :: x(10)
  98 ! CHECK-LABEL: func.func @_QPptr_comp_assign(
  99 ! CHECK:  %[[VAL_4:.*]]:2 = hlfir.declare %[[VAL_0:[a-z0-9]*]](%[[VAL_3:[a-z0-9]*]]) {{.*}}Ex
 100   real, target :: ziel(100)
 101   x(9_8)%p => ziel
 102 ! CHECK:  %[[VAL_5:.*]] = arith.constant 100 : index
 103 ! CHECK:  %[[VAL_6:.*]] = fir.shape %[[VAL_5]] : (index) -> !fir.shape<1>
 104 ! CHECK:  %[[VAL_7:.*]]:2 = hlfir.declare %[[VAL_1:[a-z0-9]*]](%[[VAL_6:[a-z0-9]*]]) {fortran_attrs = #fir.var_attrs<target>,  {{.*}}Eziel
 105 ! CHECK:  %[[VAL_8:.*]] = arith.constant 9 : index
 106 ! CHECK:  %[[VAL_9:.*]] = hlfir.designate %[[VAL_4]]#0 (%[[VAL_8]])  : (!fir.ref<!fir.array<10x!fir.type<_QFptr_comp_assignTt{p:!fir.box<!fir.ptr<!fir.array<?xf32>>>}>>>, index) -> !fir.ref<!fir.type<_QFptr_comp_assignTt{p:!fir.box<!fir.ptr<!fir.array<?xf32>>>}>>
 107 ! CHECK:  %[[VAL_10:.*]] = hlfir.designate %[[VAL_9]]{"p"}   {fortran_attrs = #fir.var_attrs<pointer>} : (!fir.ref<!fir.type<_QFptr_comp_assignTt{p:!fir.box<!fir.ptr<!fir.array<?xf32>>>}>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
 108 ! CHECK:  %[[VAL_11:.*]] = fir.shape %[[VAL_5]] : (index) -> !fir.shape<1>
 109 ! CHECK:  %[[VAL_12:.*]] = fir.embox %[[VAL_7]]#1(%[[VAL_11]]) : (!fir.ref<!fir.array<100xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
 110 ! CHECK:  fir.store %[[VAL_12]] to %[[VAL_10]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
 111 end subroutine