xref: /llvm-project/flang/test/Lower/OpenMP/parallel-reduction-array.f90 (revision f2027a9388728094d84837fc0fdd2e0325362e51) 
1! RUN: bbc -emit-hlfir -fopenmp -o - %s 2>&1 | FileCheck %s
2! RUN: %flang_fc1 -emit-hlfir -fopenmp -o - %s 2>&1 | FileCheck %s
3
4program reduce
5integer, dimension(3) :: i = 0
6
7!$omp parallel reduction(+:i)
8i(1) = 1
9i(2) = 2
10i(3) = 3
11!$omp end parallel
12
13print *,i
14end program
15
16! CHECK-LABEL:   omp.declare_reduction @add_reduction_byref_box_3xi32 : !fir.ref<!fir.box<!fir.array<3xi32>>> alloc {
17! CHECK:           %[[VAL_8:.*]] = fir.alloca !fir.box<!fir.array<3xi32>>
18! CHECK:           omp.yield(%[[VAL_8]] : !fir.ref<!fir.box<!fir.array<3xi32>>>)
19! CHECK-LABEL:   } init {
20! CHECK:         ^bb0(%[[VAL_0:.*]]: !fir.ref<!fir.box<!fir.array<3xi32>>>, %[[ALLOC:.*]]: !fir.ref<!fir.box<!fir.array<3xi32>>>):
21! CHECK:           %[[VAL_2:.*]] = arith.constant 0 : i32
22! CHECK:           %[[VAL_3:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.array<3xi32>>>
23! CHECK:           %[[VAL_4:.*]] = arith.constant 3 : index
24! CHECK:           %[[VAL_5:.*]] = fir.shape %[[VAL_4]] : (index) -> !fir.shape<1>
25! CHECK:           %[[VAL_1:.*]] = fir.allocmem !fir.array<3xi32> {bindc_name = ".tmp", uniq_name = ""}
26! CHECK:           %[[TRUE:.*]]  = arith.constant true
27! CHECK:           %[[VAL_6:.*]]:2 = hlfir.declare %[[VAL_1]](%[[VAL_5]]) {uniq_name = ".tmp"} : (!fir.heap<!fir.array<3xi32>>,
28!fir.shape<1>) -> (!fir.heap<!fir.array<3xi32>>, !fir.heap<!fir.array<3xi32>>)
29! CHECK:           %[[C0:.*]] = arith.constant 0 : index
30! CHECK:           %[[DIMS:.*]]:3 = fir.box_dims %[[VAL_3]], %[[C0]] : (!fir.box<!fir.array<3xi32>>, index) -> (index, index, index)
31! CHECK:           %[[SHIFT:.*]] = fir.shape_shift %[[DIMS]]#0, %[[DIMS]]#1 : (index, index) -> !fir.shapeshift<1>
32! CHECK:           %[[VAL_7:.*]] = fir.embox %[[VAL_6]]#0(%[[SHIFT]]) : (!fir.heap<!fir.array<3xi32>>, !fir.shapeshift<1>) -> !fir.box<!fir.array<3xi32>>
33! CHECK:           hlfir.assign %[[VAL_2]] to %[[VAL_7]] : i32, !fir.box<!fir.array<3xi32>>
34! CHECK:           fir.store %[[VAL_7]] to %[[ALLOC]] : !fir.ref<!fir.box<!fir.array<3xi32>>>
35! CHECK:           omp.yield(%[[ALLOC]] : !fir.ref<!fir.box<!fir.array<3xi32>>>)
36! CHECK:         } combiner {
37! CHECK:         ^bb0(%[[VAL_0:.*]]: !fir.ref<!fir.box<!fir.array<3xi32>>>, %[[VAL_1:.*]]: !fir.ref<!fir.box<!fir.array<3xi32>>>):
38! CHECK:           %[[VAL_2:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.array<3xi32>>>
39! CHECK:           %[[VAL_3:.*]] = fir.load %[[VAL_1]] : !fir.ref<!fir.box<!fir.array<3xi32>>>
40! CHECK:           %[[VAL_4:.*]] = arith.constant 0 : index
41! CHECK:           %[[VAL_5:.*]]:3 = fir.box_dims %[[VAL_2]], %[[VAL_4]] : (!fir.box<!fir.array<3xi32>>, index) -> (index, index, index)
42! CHECK:           %[[VAL_6:.*]] = fir.shape_shift %[[VAL_5]]#0, %[[VAL_5]]#1 : (index, index) -> !fir.shapeshift<1>
43! CHECK:           %[[VAL_7:.*]] = arith.constant 1 : index
44! CHECK:           fir.do_loop %[[VAL_8:.*]] = %[[VAL_7]] to %[[VAL_5]]#1 step %[[VAL_7]] unordered {
45! CHECK:             %[[VAL_9:.*]] = fir.array_coor %[[VAL_2]](%[[VAL_6]]) %[[VAL_8]] : (!fir.box<!fir.array<3xi32>>, !fir.shapeshift<1>, index) -> !fir.ref<i32>
46! CHECK:             %[[VAL_10:.*]] = fir.array_coor %[[VAL_3]](%[[VAL_6]]) %[[VAL_8]] : (!fir.box<!fir.array<3xi32>>, !fir.shapeshift<1>, index) -> !fir.ref<i32>
47! CHECK:             %[[VAL_11:.*]] = fir.load %[[VAL_9]] : !fir.ref<i32>
48! CHECK:             %[[VAL_12:.*]] = fir.load %[[VAL_10]] : !fir.ref<i32>
49! CHECK:             %[[VAL_13:.*]] = arith.addi %[[VAL_11]], %[[VAL_12]] : i32
50! CHECK:             fir.store %[[VAL_13]] to %[[VAL_9]] : !fir.ref<i32>
51! CHECK:           }
52! CHECK:           omp.yield(%[[VAL_0]] : !fir.ref<!fir.box<!fir.array<3xi32>>>)
53! CHECK:         }  cleanup {
54! CHECK:         ^bb0(%[[VAL_0:.*]]: !fir.ref<!fir.box<!fir.array<3xi32>>>):
55! CHECK:           %[[VAL_1:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.array<3xi32>>>
56! CHECK:           %[[VAL_2:.*]] = fir.box_addr %[[VAL_1]] : (!fir.box<!fir.array<3xi32>>) -> !fir.ref<!fir.array<3xi32>>
57! CHECK:           %[[VAL_3:.*]] = fir.convert %[[VAL_2]] : (!fir.ref<!fir.array<3xi32>>) -> i64
58! CHECK:           %[[VAL_4:.*]] = arith.constant 0 : i64
59! CHECK:           %[[VAL_5:.*]] = arith.cmpi ne, %[[VAL_3]], %[[VAL_4]] : i64
60! CHECK:           fir.if %[[VAL_5]] {
61! CHECK:             %[[VAL_6:.*]] = fir.convert %[[VAL_2]] : (!fir.ref<!fir.array<3xi32>>) -> !fir.heap<!fir.array<3xi32>>
62! CHECK:             fir.freemem %[[VAL_6]] : !fir.heap<!fir.array<3xi32>>
63! CHECK:           }
64! CHECK:           omp.yield
65! CHECK:         }
66
67! CHECK-LABEL:   func.func @_QQmain()
68! CHECK:           %[[VAL_0:.*]] = fir.address_of(@_QFEi) : !fir.ref<!fir.array<3xi32>>
69! CHECK:           %[[VAL_1:.*]] = arith.constant 3 : index
70! CHECK:           %[[VAL_2:.*]] = fir.shape %[[VAL_1]] : (index) -> !fir.shape<1>
71! CHECK:           %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0]](%[[VAL_2]]) {uniq_name = "_QFEi"} : (!fir.ref<!fir.array<3xi32>>, !fir.shape<1>) -> (!fir.ref<!fir.array<3xi32>>, !fir.ref<!fir.array<3xi32>>)
72! CHECK:           %[[VAL_4:.*]] = fir.embox %[[VAL_3]]#0(%[[VAL_2]]) : (!fir.ref<!fir.array<3xi32>>, !fir.shape<1>) -> !fir.box<!fir.array<3xi32>>
73! CHECK:           %[[VAL_5:.*]] = fir.alloca !fir.box<!fir.array<3xi32>>
74! CHECK:           fir.store %[[VAL_4]] to %[[VAL_5]] : !fir.ref<!fir.box<!fir.array<3xi32>>>
75! CHECK:           omp.parallel reduction(byref @add_reduction_byref_box_3xi32 %[[VAL_5]] -> %[[VAL_6:.*]] : !fir.ref<!fir.box<!fir.array<3xi32>>>) {
76! CHECK:             %[[VAL_7:.*]]:2 = hlfir.declare %[[VAL_6]] {uniq_name = "_QFEi"} : (!fir.ref<!fir.box<!fir.array<3xi32>>>) -> (!fir.ref<!fir.box<!fir.array<3xi32>>>, !fir.ref<!fir.box<!fir.array<3xi32>>>)
77! CHECK:             %[[VAL_8:.*]] = arith.constant 1 : i32
78! CHECK:             %[[VAL_9:.*]] = fir.load %[[VAL_7]]#0 : !fir.ref<!fir.box<!fir.array<3xi32>>>
79! CHECK:             %[[VAL_10:.*]] = arith.constant 1 : index
80! CHECK:             %[[VAL_11:.*]] = hlfir.designate %[[VAL_9]] (%[[VAL_10]])  : (!fir.box<!fir.array<3xi32>>, index) -> !fir.ref<i32>
81! CHECK:             hlfir.assign %[[VAL_8]] to %[[VAL_11]] : i32, !fir.ref<i32>
82! CHECK:             %[[VAL_12:.*]] = arith.constant 2 : i32
83! CHECK:             %[[VAL_13:.*]] = fir.load %[[VAL_7]]#0 : !fir.ref<!fir.box<!fir.array<3xi32>>>
84! CHECK:             %[[VAL_14:.*]] = arith.constant 2 : index
85! CHECK:             %[[VAL_15:.*]] = hlfir.designate %[[VAL_13]] (%[[VAL_14]])  : (!fir.box<!fir.array<3xi32>>, index) -> !fir.ref<i32>
86! CHECK:             hlfir.assign %[[VAL_12]] to %[[VAL_15]] : i32, !fir.ref<i32>
87! CHECK:             %[[VAL_16:.*]] = arith.constant 3 : i32
88! CHECK:             %[[VAL_17:.*]] = fir.load %[[VAL_7]]#0 : !fir.ref<!fir.box<!fir.array<3xi32>>>
89! CHECK:             %[[VAL_18:.*]] = arith.constant 3 : index
90! CHECK:             %[[VAL_19:.*]] = hlfir.designate %[[VAL_17]] (%[[VAL_18]])  : (!fir.box<!fir.array<3xi32>>, index) -> !fir.ref<i32>
91! CHECK:             hlfir.assign %[[VAL_16]] to %[[VAL_19]] : i32, !fir.ref<i32>
92! CHECK:             omp.terminator
93! CHECK:           }
94