flang/test/Lower/HLFIR/allocatable-and-pointer-subparts.f90

   1 ! Test lowering of allocatable and pointer sub-part reference to HLFIR
   2 ! As opposed to whole reference, a pointer/allocatable dereference must
   3 ! be inserted and addressed in a following hlfir.designate to address
   4 ! the sub-part.
   5
   6 ! RUN: bbc -emit-fir -hlfir -o - %s -I nw | FileCheck %s
   7
   8 module m
   9   type t1
  10     real :: x
  11   end type
  12   type t2
  13     type(t1), pointer :: p
  14   end type
  15   type t3
  16     character(:), allocatable :: a(:)
  17   end type
  18 end module
  19
  20 subroutine test_pointer_component_followed_by_component_ref(x)
  21   use m
  22   type(t2) :: x
  23   call takes_real(x%p%x)
  24 end subroutine
  25 ! CHECK-LABEL: func.func @_QPtest_pointer_component_followed_by_component_ref(
  26 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare %{{.*}} {{.*}}Ex
  27 ! CHECK:  %[[VAL_2:.*]] = hlfir.designate %[[VAL_1]]#0{"p"}   {fortran_attrs = #fir.var_attrs<pointer>} : (!fir.ref<!fir.type<_QMmTt2{p:!fir.box<!fir.ptr<!fir.type<_QMmTt1{x:f32}>>>}>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.type<_QMmTt1{x:f32}>>>>
  28 ! CHECK:  %[[VAL_3:.*]] = fir.load %[[VAL_2]] : !fir.ref<!fir.box<!fir.ptr<!fir.type<_QMmTt1{x:f32}>>>>
  29 ! CHECK:  %[[VAL_4:.*]] = fir.box_addr %[[VAL_3:.*]] : (!fir.box<!fir.ptr<!fir.type<_QMmTt1{x:f32}>>>) -> !fir.ptr<!fir.type<_QMmTt1{x:f32}>>
  30 ! CHECK:  hlfir.designate %[[VAL_4]]{"x"}   : (!fir.ptr<!fir.type<_QMmTt1{x:f32}>>) -> !fir.ref<f32>
  31
  32 subroutine test_symbol_followed_by_ref(x)
  33   character(:), allocatable :: x(:)
  34   call test_char(x(10))
  35 end subroutine
  36 ! CHECK-LABEL: func.func @_QPtest_symbol_followed_by_ref(
  37 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare %{{.*}} {fortran_attrs = #fir.var_attrs<allocatable>, uniq_name = {{.*}}Ex"
  38 ! CHECK:  %[[VAL_2:.*]] = fir.load %[[VAL_1]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  39 ! CHECK:  %[[VAL_3:.*]] = fir.box_elesize %[[VAL_2]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>) -> index
  40 ! CHECK:  %[[VAL_4:.*]] = arith.constant 10 : index
  41 ! CHECK:  %[[VAL_5:.*]] = hlfir.designate %[[VAL_2]] (%[[VAL_4]])  typeparams %[[VAL_3]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>, index, index) -> !fir.boxchar<1>
  42
  43 subroutine test_component_followed_by_ref(x)
  44   use m
  45   type(t3) :: x
  46   call test_char(x%a(10))
  47 end subroutine
  48 ! CHECK-LABEL: func.func @_QPtest_component_followed_by_ref(
  49 ! CHECK:  %[[VAL_1:.*]]:2 = hlfir.declare %{{.*}} {{.*}}Ex
  50 ! CHECK:  %[[VAL_2:.*]] = hlfir.designate %[[VAL_1]]#0{"a"}   {fortran_attrs = #fir.var_attrs<allocatable>} : (!fir.ref<!fir.type<_QMmTt3{a:!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>}>>) -> !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  51 ! CHECK:  %[[VAL_3:.*]] = fir.load %[[VAL_2]] : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  52 ! CHECK:  %[[VAL_4:.*]] = fir.box_elesize %[[VAL_3]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>) -> index
  53 ! CHECK:  %[[VAL_5:.*]] = arith.constant 10 : index
  54 ! CHECK:  %[[VAL_6:.*]] = hlfir.designate %[[VAL_3]] (%[[VAL_5]])  typeparams %[[VAL_4]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>, index, index) -> !fir.boxchar<1>