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llvm-project/flang/test/Lower/pointer-references.f90
Valentin Clement 3de6b1ce0d
[flang][NFC] Add pointer dummy arguments tests 
This patch adds test for calls with POINTER dummy arguments on the caller side.

It also fixes some formatting error that was introduced when upstreaming
the other pointer tests.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D122238

Co-authored-by: Jean Perier <jperier@nvidia.com>
2022-03-22 20:57:15 +01:00

181 lines
11 KiB
Fortran
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! Test lowering of references to pointers
! RUN: bbc -emit-fir %s -o - | FileCheck %s
! Assigning/reading to scalar pointer target.
! CHECK-LABEL: func @_QPscal_ptr(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.ptr<f32>>>{{.*}})
subroutine scal_ptr(p)
real, pointer :: p
real :: x
! CHECK: %[[boxload:.*]] = fir.load %[[arg0]]
! CHECK: %[[addr:.*]] = fir.box_addr %[[boxload]]
! CHECK: fir.store %{{.*}} to %[[addr]]
p = 3.
! CHECK: %[[boxload2:.*]] = fir.load %[[arg0]]
! CHECK: %[[addr2:.*]] = fir.box_addr %[[boxload2]]
! CHECK: %[[val:.*]] = fir.load %[[addr2]]
! CHECK: fir.store %[[val]] to %{{.*}}
x = p
end subroutine
! Assigning/reading scalar character pointer target.
! CHECK-LABEL: func @_QPchar_ptr(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.char<1,12>>>>{{.*}})
subroutine char_ptr(p)
character(12), pointer :: p
character(12) :: x
! CHECK-DAG: %[[str:.*]] = fir.address_of(@_QQcl.68656C6C6F20776F726C6421) : !fir.ref<!fir.char<1,12>>
! CHECK: %[[boxload:.*]] = fir.load %[[arg0]]
! CHECK: %[[addr:.*]] = fir.box_addr %[[boxload]]
! CHECK-DAG: %[[one:.*]] = arith.constant 1
! CHECK-DAG: %[[size:.*]] = fir.convert %{{.*}} : (index) -> i64
! CHECK: %[[count:.*]] = arith.muli %[[one]], %[[size]] : i64
! CHECK: %[[dst:.*]] = fir.convert %[[addr]] : (!fir.ptr<!fir.char<1,12>>) -> !fir.ref<i8>
! CHECK: %[[src:.*]] = fir.convert %[[str]] : (!fir.ref<!fir.char<1,12>>) -> !fir.ref<i8>
! CHECK: fir.call @llvm.memmove.p0i8.p0i8.i64(%[[dst]], %[[src]], %5, %false) : (!fir.ref<i8>, !fir.ref<i8>, i64, i1) -> ()
p = "hello world!"
! CHECK: %[[boxload2:.*]] = fir.load %[[arg0]]
! CHECK: %[[addr2:.*]] = fir.box_addr %[[boxload2]]
! CHECK: %[[count:.*]] = arith.muli %{{.*}}, %{{.*}} : i64
! CHECK: %[[dst:.*]] = fir.convert %{{.*}} : (!fir.ref<!fir.char<1,12>>) -> !fir.ref<i8>
! CHECK: %[[src:.*]] = fir.convert %[[addr2]] : (!fir.ptr<!fir.char<1,12>>) -> !fir.ref<i8>
! CHECK: fir.call @llvm.memmove.p0i8.p0i8.i64(%[[dst]], %[[src]], %[[count]], %{{.*}}) : (!fir.ref<i8>, !fir.ref<i8>, i64, i1) -> ()
x = p
end subroutine
! Reading from pointer in array expression
! CHECK-LABEL: func @_QParr_ptr_read(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{.*}})
subroutine arr_ptr_read(p)
real, pointer :: p(:)
real :: x(100)
! CHECK: %[[boxload:.*]] = fir.load %[[arg0]]
! CHECK: %[[dims:.*]]:3 = fir.box_dims %[[boxload]], %c0{{.*}} : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, index) -> (index, index, index)
! CHECK: %[[lb:.*]] = fir.shift %[[dims]]#0 : (index) -> !fir.shift<1>
! CHECK: fir.array_load %[[boxload]](%[[lb]]) : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, !fir.shift<1>) -> !fir.array<?xf32>
x = p
end subroutine
! Reading from contiguous pointer in array expression
! CHECK-LABEL: func @_QParr_contig_ptr_read(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>> {{{.*}}, fir.contiguous})
subroutine arr_contig_ptr_read(p)
real, pointer, contiguous :: p(:)
real :: x(100)
! CHECK: %[[boxload:.*]] = fir.load %[[arg0]]
! CHECK-DAG: %[[dims:.*]]:3 = fir.box_dims %[[boxload]], %c0{{.*}} : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, index) -> (index, index, index)
! CHECK-DAG: %[[addr:.*]] = fir.box_addr %[[boxload]] : (!fir.box<!fir.ptr<!fir.array<?xf32>>>) -> !fir.ptr<!fir.array<?xf32>>
! CHECK-DAG: %[[shape:.*]] = fir.shape_shift %[[dims]]#0, %[[dims]]#1 : (index, index) -> !fir.shapeshift<1>
! CHECK: fir.array_load %[[addr]](%[[shape]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shapeshift<1>) -> !fir.array<?xf32>
x = p
end subroutine
! Assigning to pointer target in array expression
! CHECK-LABEL: func @_QParr_ptr_target_write(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{.*}}) {
! CHECK: %[[VAL_1:.*]] = arith.constant 100 : index
! CHECK: %[[VAL_2:.*]] = fir.alloca !fir.array<100xf32> {bindc_name = "x", uniq_name = "_QFarr_ptr_target_writeEx"}
! CHECK: %[[VAL_3:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
! CHECK: %[[VAL_4:.*]] = arith.constant 0 : index
! CHECK: %[[VAL_5:.*]]:3 = fir.box_dims %[[VAL_3]], %[[VAL_4]] : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, index) -> (index, index, index)
! CHECK: %[[VAL_6:.*]] = arith.constant 2 : i64
! CHECK: %[[VAL_7:.*]] = fir.convert %[[VAL_6]] : (i64) -> index
! CHECK: %[[VAL_8:.*]] = arith.constant 6 : i64
! CHECK: %[[VAL_9:.*]] = fir.convert %[[VAL_8]] : (i64) -> index
! CHECK: %[[VAL_10:.*]] = arith.constant 601 : i64
! CHECK: %[[VAL_11:.*]] = fir.convert %[[VAL_10]] : (i64) -> index
! CHECK: %[[VAL_12:.*]] = arith.constant 0 : index
! CHECK: %[[VAL_13:.*]] = arith.subi %[[VAL_11]], %[[VAL_7]] : index
! CHECK: %[[VAL_14:.*]] = arith.addi %[[VAL_13]], %[[VAL_9]] : index
! CHECK: %[[VAL_15:.*]] = arith.divsi %[[VAL_14]], %[[VAL_9]] : index
! CHECK: %[[VAL_16:.*]] = arith.cmpi sgt, %[[VAL_15]], %[[VAL_12]] : index
! CHECK: %[[VAL_17:.*]] = arith.select %[[VAL_16]], %[[VAL_15]], %[[VAL_12]] : index
! CHECK: %[[VAL_18:.*]] = fir.shift %[[VAL_5]]#0 : (index) -> !fir.shift<1>
! CHECK: %[[VAL_19:.*]] = fir.slice %[[VAL_7]], %[[VAL_11]], %[[VAL_9]] : (index, index, index) -> !fir.slice<1>
! CHECK: %[[VAL_20:.*]] = fir.array_load %[[VAL_3]](%[[VAL_18]]) {{\[}}%[[VAL_19]]] : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, !fir.shift<1>, !fir.slice<1>) -> !fir.array<?xf32>
! CHECK: %[[VAL_21:.*]] = fir.shape %[[VAL_1]] : (index) -> !fir.shape<1>
! CHECK: %[[VAL_22:.*]] = fir.array_load %[[VAL_2]](%[[VAL_21]]) : (!fir.ref<!fir.array<100xf32>>, !fir.shape<1>) -> !fir.array<100xf32>
! CHECK: %[[VAL_23:.*]] = arith.constant 1 : index
! CHECK: %[[VAL_24:.*]] = arith.constant 0 : index
! CHECK: %[[VAL_25:.*]] = arith.subi %[[VAL_17]], %[[VAL_23]] : index
! CHECK: %[[VAL_26:.*]] = fir.do_loop %[[VAL_27:.*]] = %[[VAL_24]] to %[[VAL_25]] step %[[VAL_23]] unordered iter_args(%[[VAL_28:.*]] = %[[VAL_20]]) -> (!fir.array<?xf32>) {
! CHECK: %[[VAL_29:.*]] = fir.array_fetch %[[VAL_22]], %[[VAL_27]] : (!fir.array<100xf32>, index) -> f32
! CHECK: %[[VAL_30:.*]] = fir.array_update %[[VAL_28]], %[[VAL_29]], %[[VAL_27]] : (!fir.array<?xf32>, f32, index) -> !fir.array<?xf32>
! CHECK: fir.result %[[VAL_30]] : !fir.array<?xf32>
! CHECK: }
! CHECK: fir.array_merge_store %[[VAL_20]], %[[VAL_31:.*]] to %[[VAL_3]]{{\[}}%[[VAL_19]]] : !fir.array<?xf32>, !fir.array<?xf32>, !fir.box<!fir.ptr<!fir.array<?xf32>>>, !fir.slice<1>
! CHECK: return
! CHECK: }
subroutine arr_ptr_target_write(p)
real, pointer :: p(:)
real :: x(100)
p(2:601:6) = x
end subroutine
! Assigning to contiguous pointer target in array expression
! CHECK-LABEL: func @_QParr_contig_ptr_target_write(
! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>> {{{.*}}, fir.contiguous}) {
! CHECK: %[[VAL_1:.*]] = arith.constant 100 : index
! CHECK: %[[VAL_2:.*]] = fir.alloca !fir.array<100xf32> {bindc_name = "x", uniq_name = "_QFarr_contig_ptr_target_writeEx"}
! CHECK: %[[VAL_3:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
! CHECK: %[[VAL_4:.*]] = arith.constant 0 : index
! CHECK: %[[VAL_5:.*]]:3 = fir.box_dims %[[VAL_3]], %[[VAL_4]] : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, index) -> (index, index, index)
! CHECK: %[[VAL_6:.*]] = fir.box_addr %[[VAL_3]] : (!fir.box<!fir.ptr<!fir.array<?xf32>>>) -> !fir.ptr<!fir.array<?xf32>>
! CHECK: %[[VAL_7:.*]] = arith.constant 2 : i64
! CHECK: %[[VAL_8:.*]] = fir.convert %[[VAL_7]] : (i64) -> index
! CHECK: %[[VAL_9:.*]] = arith.constant 6 : i64
! CHECK: %[[VAL_10:.*]] = fir.convert %[[VAL_9]] : (i64) -> index
! CHECK: %[[VAL_11:.*]] = arith.constant 601 : i64
! CHECK: %[[VAL_12:.*]] = fir.convert %[[VAL_11]] : (i64) -> index
! CHECK: %[[VAL_13:.*]] = arith.constant 0 : index
! CHECK: %[[VAL_14:.*]] = arith.subi %[[VAL_12]], %[[VAL_8]] : index
! CHECK: %[[VAL_15:.*]] = arith.addi %[[VAL_14]], %[[VAL_10]] : index
! CHECK: %[[VAL_16:.*]] = arith.divsi %[[VAL_15]], %[[VAL_10]] : index
! CHECK: %[[VAL_17:.*]] = arith.cmpi sgt, %[[VAL_16]], %[[VAL_13]] : index
! CHECK: %[[VAL_18:.*]] = arith.select %[[VAL_17]], %[[VAL_16]], %[[VAL_13]] : index
! CHECK: %[[VAL_19:.*]] = fir.shape_shift %[[VAL_5]]#0, %[[VAL_5]]#1 : (index, index) -> !fir.shapeshift<1>
! CHECK: %[[VAL_20:.*]] = fir.slice %[[VAL_8]], %[[VAL_12]], %[[VAL_10]] : (index, index, index) -> !fir.slice<1>
! CHECK: %[[VAL_21:.*]] = fir.array_load %[[VAL_6]](%[[VAL_19]]) {{\[}}%[[VAL_20]]] : (!fir.ptr<!fir.array<?xf32>>, !fir.shapeshift<1>, !fir.slice<1>) -> !fir.array<?xf32>
! CHECK: %[[VAL_22:.*]] = fir.shape %[[VAL_1]] : (index) -> !fir.shape<1>
! CHECK: %[[VAL_23:.*]] = fir.array_load %[[VAL_2]](%[[VAL_22]]) : (!fir.ref<!fir.array<100xf32>>, !fir.shape<1>) -> !fir.array<100xf32>
! CHECK: %[[VAL_24:.*]] = arith.constant 1 : index
! CHECK: %[[VAL_25:.*]] = arith.constant 0 : index
! CHECK: %[[VAL_26:.*]] = arith.subi %[[VAL_18]], %[[VAL_24]] : index
! CHECK: %[[VAL_27:.*]] = fir.do_loop %[[VAL_28:.*]] = %[[VAL_25]] to %[[VAL_26]] step %[[VAL_24]] unordered iter_args(%[[VAL_29:.*]] = %[[VAL_21]]) -> (!fir.array<?xf32>) {
! CHECK: %[[VAL_30:.*]] = fir.array_fetch %[[VAL_23]], %[[VAL_28]] : (!fir.array<100xf32>, index) -> f32
! CHECK: %[[VAL_31:.*]] = fir.array_update %[[VAL_29]], %[[VAL_30]], %[[VAL_28]] : (!fir.array<?xf32>, f32, index) -> !fir.array<?xf32>
! CHECK: fir.result %[[VAL_31]] : !fir.array<?xf32>
! CHECK: }
! CHECK: fir.array_merge_store %[[VAL_21]], %[[VAL_32:.*]] to %[[VAL_6]]{{\[}}%[[VAL_20]]] : !fir.array<?xf32>, !fir.array<?xf32>, !fir.ptr<!fir.array<?xf32>>, !fir.slice<1>
! CHECK: return
! CHECK: }
subroutine arr_contig_ptr_target_write(p)
real, pointer, contiguous :: p(:)
real :: x(100)
p(2:601:6) = x
end subroutine
! CHECK-LABEL: func @_QPpointer_result_as_value
subroutine pointer_result_as_value()
! Test that function pointer results used as values are correctly loaded.
interface
function returns_int_pointer()
integer, pointer :: returns_int_pointer
end function
end interface
! CHECK: %[[VAL_0:.*]] = fir.alloca !fir.box<!fir.ptr<i32>> {bindc_name = ".result"}
! CHECK: %[[VAL_6:.*]] = fir.call @_QPreturns_int_pointer() : () -> !fir.box<!fir.ptr<i32>>
! CHECK: fir.save_result %[[VAL_6]] to %[[VAL_0]] : !fir.box<!fir.ptr<i32>>, !fir.ref<!fir.box<!fir.ptr<i32>>>
! CHECK: %[[VAL_7:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<i32>>>
! CHECK: %[[VAL_8:.*]] = fir.box_addr %[[VAL_7]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
! CHECK: fir.load %[[VAL_8]] : !fir.ptr<i32>
print *, returns_int_pointer()
end subroutine
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