test/Lower/HLFIR/implicit-type-conversion-allocatable.f90

! Test implicit conversion in assignment to whole allocatables. It
! is special because care must be taken to propagate the RHS lower
! bounds to the LHS in case of re-allocation.
! RUN: bbc -emit-hlfir %s -o - | FileCheck %s

subroutine preserve_lbounds(x, y)
  integer, allocatable :: x(:)
  complex, allocatable :: y(:)
  x = y
end subroutine
! CHECK-LABEL:   func.func @_QPpreserve_lbounds(
! CHECK:           %[[VAL_2:.*]]:2 = hlfir.declare {{.*}}uniq_name = "_QFpreserve_lboundsEx"
! CHECK:           %[[VAL_3:.*]]:2 = hlfir.declare {{.*}}uniq_name = "_QFpreserve_lboundsEy"
! CHECK:           %[[VAL_4:.*]] = fir.load %[[VAL_3]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.complex<4>>>>>
! CHECK:           %[[VAL_5:.*]] = arith.constant 0 : index
! CHECK:           %[[VAL_6:.*]]:3 = fir.box_dims %[[VAL_4]], %[[VAL_5]] : (!fir.box<!fir.heap<!fir.array<?x!fir.complex<4>>>>, index) -> (index, index, index)
! CHECK:           %[[VAL_7:.*]] = fir.shape %[[VAL_6]]#1 : (index) -> !fir.shape<1>
! CHECK:           %[[VAL_8:.*]] = hlfir.elemental %[[VAL_7]] unordered : (!fir.shape<1>) -> !hlfir.expr<?xi32> {
! CHECK:           ^bb0(%[[VAL_9:.*]]: index):
! CHECK:             %[[VAL_10:.*]] = arith.constant 0 : index
! CHECK:             %[[VAL_11:.*]]:3 = fir.box_dims %[[VAL_4]], %[[VAL_10]] : (!fir.box<!fir.heap<!fir.array<?x!fir.complex<4>>>>, index) -> (index, index, index)
! CHECK:             %[[VAL_12:.*]] = arith.constant 1 : index
! CHECK:             %[[VAL_13:.*]] = arith.subi %[[VAL_11]]#0, %[[VAL_12]] : index
! CHECK:             %[[VAL_14:.*]] = arith.addi %[[VAL_9]], %[[VAL_13]] : index
! CHECK:             %[[VAL_15:.*]] = hlfir.designate %[[VAL_4]] (%[[VAL_14]])  : (!fir.box<!fir.heap<!fir.array<?x!fir.complex<4>>>>, index) -> !fir.ref<!fir.complex<4>>
! CHECK:             %[[VAL_16:.*]] = fir.load %[[VAL_15]] : !fir.ref<!fir.complex<4>>
! CHECK:             %[[VAL_17:.*]] = fir.extract_value %[[VAL_16]], [0 : index] : (!fir.complex<4>) -> f32
! CHECK:             %[[VAL_18:.*]] = fir.convert %[[VAL_17]] : (f32) -> i32
! CHECK:             hlfir.yield_element %[[VAL_18]] : i32
! CHECK:           }
! CHECK:           %[[VAL_19:.*]]:3 = hlfir.associate %[[VAL_8]](%[[VAL_7]]) {uniq_name = ".tmp.keeplbounds"} : (!hlfir.expr<?xi32>, !fir.shape<1>) -> (!fir.box<!fir.array<?xi32>>, !fir.ref<!fir.array<?xi32>>, i1)
! CHECK:           %[[VAL_20:.*]] = arith.constant 0 : index
! CHECK:           %[[VAL_21:.*]]:3 = fir.box_dims %[[VAL_4]], %[[VAL_20]] : (!fir.box<!fir.heap<!fir.array<?x!fir.complex<4>>>>, index) -> (index, index, index)
! CHECK:           %[[VAL_22:.*]] = fir.shape_shift %[[VAL_21]]#0, %[[VAL_6]]#1 : (index, index) -> !fir.shapeshift<1>
! CHECK:           %[[VAL_23:.*]]:2 = hlfir.declare %[[VAL_19]]#1(%[[VAL_22]]) {uniq_name = ".tmp.keeplbounds"} : (!fir.ref<!fir.array<?xi32>>, !fir.shapeshift<1>) -> (!fir.box<!fir.array<?xi32>>, !fir.ref<!fir.array<?xi32>>)
! CHECK:           hlfir.assign %[[VAL_23]]#0 to %[[VAL_2]]#0 realloc : !fir.box<!fir.array<?xi32>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?xi32>>>>
! CHECK:           hlfir.end_associate %[[VAL_19]]#1, %[[VAL_19]]#2 : !fir.ref<!fir.array<?xi32>>, i1
! CHECK:           hlfir.destroy %[[VAL_8]] : !hlfir.expr<?xi32>
! CHECK:           return
! CHECK:         }

! Test that RHS character length is preserved in a character KIND
! conversion before the assignment.
subroutine kind_and_length(a, b)
  character(len=4,kind=4), allocatable :: a(:)
  character(len=2,kind=1) :: b(:)
  a = b
end subroutine
! CHECK-LABEL:   func.func @_QPkind_and_length(
! CHECK:         %[[VAL_2:.*]] = arith.constant 4 : index
! CHECK:         %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0:[a-z0-9]*]] typeparams %[[VAL_2:[a-z0-9]*]]  {{.*}}Ea
! CHECK:         %[[VAL_4:.*]] = arith.constant 2 : index
! CHECK:         %[[VAL_5:.*]]:2 = hlfir.declare %[[VAL_1:[a-z0-9]*]] typeparams %[[VAL_4:[a-z0-9]*]]  {{.*}}Eb
! CHECK:         %[[VAL_6:.*]] = arith.constant 0 : index
! CHECK:         %[[VAL_7:.*]]:3 = fir.box_dims %[[VAL_5]]#0, %[[VAL_6]] : (!fir.box<!fir.array<?x!fir.char<1,2>>>, index) -> (index, index, index)
! CHECK:         %[[VAL_8:.*]] = fir.shape %[[VAL_7]]#1 : (index) -> !fir.shape<1>
! CHECK:         %[[VAL_9:.*]] = hlfir.elemental %[[VAL_8]] typeparams %[[VAL_4]] unordered : (!fir.shape<1>, index) -> !hlfir.expr<?x!fir.char<4,2>> {
! CHECK:         ^bb0(%[[VAL_10:.*]]: index):
! CHECK:           %[[VAL_11:.*]] = hlfir.designate %[[VAL_5]]#0 (%[[VAL_10]])  typeparams %[[VAL_4]] : (!fir.box<!fir.array<?x!fir.char<1,2>>>, index, index) -> !fir.ref<!fir.char<1,2>>
! CHECK:           %[[VAL_12:.*]] = fir.alloca !fir.char<4,?>(%[[VAL_4]] : index)
! CHECK:           fir.char_convert %[[VAL_11]] for %[[VAL_4]] to %[[VAL_12]] : !fir.ref<!fir.char<1,2>>, index, !fir.ref<!fir.char<4,?>>
! CHECK:           %[[VAL_13:.*]]:2 = hlfir.declare %[[VAL_12:[a-z0-9]*]] typeparams %[[VAL_4:[a-z0-9]*]] {uniq_name = ".temp.kindconvert"} : (!fir.ref<!fir.char<4,?>>, index) -> (!fir.boxchar<4>, !fir.ref<!fir.char<4,?>>)
! CHECK:           hlfir.yield_element %[[VAL_13]]#0 : !fir.boxchar<4>
! CHECK:         }
! CHECK:         hlfir.assign %[[VAL_9]] to %[[VAL_3]]#0 realloc keep_lhs_len : !hlfir.expr<?x!fir.char<4,2>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<4,4>>>>>