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1! Test forall lowering2 3! RUN: bbc -emit-fir -hlfir=false %s -o - | FileCheck %s4 5!*** This FORALL construct does present a potential loop-carried dependence if6!*** implemented naively (and incorrectly). The final value of a(3) must be the7!*** value of a(2) before loopy begins execution added to b(2).8subroutine test9(a,b,n)9 10 integer :: n11 real, intent(inout) :: a(n)12 real, intent(in) :: b(n)13 loopy: FORALL (i=1:n-1)14 a(i+1) = a(i) + b(i)15 END FORALL loopy16end subroutine test917 18! CHECK-LABEL: func @_QPtest9(19! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.array<?xf32>> {fir.bindc_name = "a"},20! CHECK-SAME: %[[VAL_1:.*]]: !fir.ref<!fir.array<?xf32>> {fir.bindc_name = "b"},21! CHECK-SAME: %[[VAL_2:.*]]: !fir.ref<i32> {fir.bindc_name = "n"}) {22! CHECK: %[[VAL_3:.*]] = fir.alloca i32 {adapt.valuebyref, bindc_name = "i"}23! CHECK: %[[VAL_4:.*]] = fir.load %[[VAL_2]] : !fir.ref<i32>24! CHECK: %[[VAL_5:.*]] = fir.convert %[[VAL_4]] : (i32) -> i6425! CHECK: %[[VAL_6:.*]] = fir.convert %[[VAL_5]] : (i64) -> index26! CHECK: %[[VAL_7:.*]] = arith.constant 0 : index27! CHECK: %[[VAL_8:.*]] = arith.cmpi sgt, %[[VAL_6]], %[[VAL_7]] : index28! CHECK: %[[VAL_9:.*]] = arith.select %[[VAL_8]], %[[VAL_6]], %[[VAL_7]] : index29! CHECK: %[[VAL_10:.*]] = fir.load %[[VAL_2]] : !fir.ref<i32>30! CHECK: %[[VAL_11:.*]] = fir.convert %[[VAL_10]] : (i32) -> i6431! CHECK: %[[VAL_12:.*]] = fir.convert %[[VAL_11]] : (i64) -> index32! CHECK: %[[VAL_13:.*]] = arith.constant 0 : index33! CHECK: %[[VAL_14:.*]] = arith.cmpi sgt, %[[VAL_12]], %[[VAL_13]] : index34! CHECK: %[[VAL_15:.*]] = arith.select %[[VAL_14]], %[[VAL_12]], %[[VAL_13]] : index35! CHECK: %[[VAL_16:.*]] = arith.constant 1 : i3236! CHECK: %[[VAL_17:.*]] = fir.convert %[[VAL_16]] : (i32) -> index37! CHECK: %[[VAL_18:.*]] = fir.load %[[VAL_2]] : !fir.ref<i32>38! CHECK: %[[VAL_19:.*]] = arith.constant 1 : i3239! CHECK: %[[VAL_20:.*]] = arith.subi %[[VAL_18]], %[[VAL_19]] : i3240! CHECK: %[[VAL_21:.*]] = fir.convert %[[VAL_20]] : (i32) -> index41! CHECK: %[[VAL_22:.*]] = arith.constant 1 : index42! CHECK: %[[VAL_23:.*]] = fir.shape %[[VAL_9]] : (index) -> !fir.shape<1>43! CHECK: %[[VAL_24:.*]] = fir.array_load %[[VAL_0]](%[[VAL_23]]) : (!fir.ref<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.array<?xf32>44! CHECK: %[[VAL_25:.*]] = fir.shape %[[VAL_9]] : (index) -> !fir.shape<1>45! CHECK: %[[VAL_26:.*]] = fir.array_load %[[VAL_0]](%[[VAL_25]]) : (!fir.ref<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.array<?xf32>46! CHECK: %[[VAL_27:.*]] = fir.shape %[[VAL_15]] : (index) -> !fir.shape<1>47! CHECK: %[[VAL_28:.*]] = fir.array_load %[[VAL_1]](%[[VAL_27]]) : (!fir.ref<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.array<?xf32>48! CHECK: %[[VAL_29:.*]] = fir.do_loop %[[VAL_30:.*]] = %[[VAL_17]] to %[[VAL_21]] step %[[VAL_22]] unordered iter_args(%[[VAL_31:.*]] = %[[VAL_24]]) -> (!fir.array<?xf32>) {49! CHECK: %[[VAL_32:.*]] = fir.convert %[[VAL_30]] : (index) -> i3250! CHECK: fir.store %[[VAL_32]] to %[[VAL_3]] : !fir.ref<i32>51! CHECK: %[[VAL_33:.*]] = arith.constant 1 : index52! CHECK: %[[VAL_34:.*]] = fir.load %[[VAL_3]] : !fir.ref<i32>53! CHECK: %[[VAL_35:.*]] = fir.convert %[[VAL_34]] : (i32) -> i6454! CHECK: %[[VAL_36:.*]] = fir.convert %[[VAL_35]] : (i64) -> index55! CHECK: %[[VAL_37:.*]] = arith.subi %[[VAL_36]], %[[VAL_33]] : index56! CHECK: %[[VAL_38:.*]] = fir.array_fetch %[[VAL_26]], %[[VAL_37]] : (!fir.array<?xf32>, index) -> f3257! CHECK: %[[VAL_39:.*]] = arith.constant 1 : index58! CHECK: %[[VAL_40:.*]] = fir.load %[[VAL_3]] : !fir.ref<i32>59! CHECK: %[[VAL_41:.*]] = fir.convert %[[VAL_40]] : (i32) -> i6460! CHECK: %[[VAL_42:.*]] = fir.convert %[[VAL_41]] : (i64) -> index61! CHECK: %[[VAL_43:.*]] = arith.subi %[[VAL_42]], %[[VAL_39]] : index62! CHECK: %[[VAL_44:.*]] = fir.array_fetch %[[VAL_28]], %[[VAL_43]] : (!fir.array<?xf32>, index) -> f3263! CHECK: %[[VAL_45:.*]] = arith.addf %[[VAL_38]], %[[VAL_44]] {{.*}}: f3264! CHECK: %[[VAL_46:.*]] = arith.constant 1 : index65! CHECK: %[[VAL_47:.*]] = fir.load %[[VAL_3]] : !fir.ref<i32>66! CHECK: %[[VAL_48:.*]] = arith.constant 1 : i3267! CHECK: %[[VAL_49:.*]] = arith.addi %[[VAL_47]], %[[VAL_48]] : i3268! CHECK: %[[VAL_50:.*]] = fir.convert %[[VAL_49]] : (i32) -> i6469! CHECK: %[[VAL_51:.*]] = fir.convert %[[VAL_50]] : (i64) -> index70! CHECK: %[[VAL_52:.*]] = arith.subi %[[VAL_51]], %[[VAL_46]] : index71! CHECK: %[[VAL_53:.*]] = fir.array_update %[[VAL_31]], %[[VAL_45]], %[[VAL_52]] : (!fir.array<?xf32>, f32, index) -> !fir.array<?xf32>72! CHECK: fir.result %[[VAL_53]] : !fir.array<?xf32>73! CHECK: }74! CHECK: fir.array_merge_store %[[VAL_24]], %[[VAL_54:.*]] to %[[VAL_0]] : !fir.array<?xf32>, !fir.array<?xf32>, !fir.ref<!fir.array<?xf32>>75! CHECK: return76! CHECK: }77