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[Flang][OpenMP] Fix crash when loop index var is pointer or allocatable #129717

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Merged
merged 4 commits into from
Mar 6, 2025
Merged

[Flang][OpenMP] Fix crash when loop index var is pointer or allocatable #129717

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4cc6e3b
[Flang][OpenMP] Fix crash when loop index var is private or allocatable
kiranchandramohan Mar 4, 2025
1689860
Fix lastprivate update of IVs
kiranchandramohan Mar 5, 2025
0f5b141
Remove assert
kiranchandramohan Mar 6, 2025
3f8f8d2
Merge branch 'main' into loopvar-pointer
kiranchandramohan Mar 6, 2025
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5 changes: 4 additions & 1 deletion flang/lib/Lower/OpenMP/DataSharingProcessor.cpp
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Expand Up @@ -308,7 +308,10 @@ void DataSharingProcessor::insertLastPrivateCompare(mlir::Operation *op) {
firOpBuilder.setInsertionPointToStart(&ifOp.getThenRegion().front());
for (auto [v, loopIV] : llvm::zip_equal(vs, loopIVs)) {
assert(loopIV && "loopIV was not set");
firOpBuilder.createStoreWithConvert(loc, v, loopIV);
hlfir::Entity loopIVEntity{loopIV};
loopIVEntity =
hlfir::derefPointersAndAllocatables(loc, firOpBuilder, loopIVEntity);
firOpBuilder.create<hlfir::AssignOp>(loc, v, loopIVEntity);
}
lastPrivIP = firOpBuilder.saveInsertionPoint();
} else if (mlir::isa<mlir::omp::SectionsOp>(op)) {
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8 changes: 6 additions & 2 deletions flang/lib/Lower/OpenMP/OpenMP.cpp
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Expand Up @@ -789,8 +789,12 @@ createAndSetPrivatizedLoopVar(lower::AbstractConverter &converter,

firOpBuilder.restoreInsertionPoint(insPt);
mlir::Value cvtVal = firOpBuilder.createConvert(loc, tempTy, indexVal);
mlir::Operation *storeOp = firOpBuilder.create<fir::StoreOp>(
loc, cvtVal, converter.getSymbolAddress(*sym));
hlfir::Entity lhs{converter.getSymbolAddress(*sym)};

lhs = hlfir::derefPointersAndAllocatables(loc, firOpBuilder, lhs);

mlir::Operation *storeOp =
firOpBuilder.create<hlfir::AssignOp>(loc, cvtVal, lhs);
return storeOp;
}

Expand Down
2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/DelayedPrivatization/distribute-standalone-private.f90
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Expand Up @@ -31,7 +31,7 @@ end subroutine standalone_distribute
! CHECK: %[[VAR_PRIV_DECL:.*]]:2 = hlfir.declare %[[VAR_ARG]]
! CHECK: %[[I_PRIV_DECL:.*]]:2 = hlfir.declare %[[I_ARG]]

! CHECK: fir.store %{{.*}} to %[[I_PRIV_DECL]]#1 : !fir.ref<i32>
! CHECK: hlfir.assign %{{.*}} to %[[I_PRIV_DECL]]#1 : i32, !fir.ref<i32>
! CHECK: %{{.*}} = fir.load %[[VAR_PRIV_DECL]]#0 : !fir.ref<i32>
! CHECK: %{{.*}} = fir.load %[[I_PRIV_DECL]]#0 : !fir.ref<i32>
! CHECK: arith.addi %{{.*}}, %{{.*}} : i32
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2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/DelayedPrivatization/wsloop.f90
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Expand Up @@ -28,7 +28,7 @@ end subroutine wsloop_private
! CHECK: omp.loop_nest (%[[IV:.*]]) : i32 = {{.*}} {
! CHECK: %[[X_PRIV_DECL:.*]]:2 = hlfir.declare %[[X_ARG]] {uniq_name = "{{.*}}x"}
! CHECK: %[[I_PRIV_DECL:.*]]:2 = hlfir.declare %[[I_ARG]] {uniq_name = "{{.*}}i"}
! CHECK: fir.store %[[IV]] to %[[I_PRIV_DECL]]#1
! CHECK: hlfir.assign %[[IV]] to %[[I_PRIV_DECL]]#1
! CHECK: %[[X_VAL:.*]] = fir.load %[[X_PRIV_DECL]]#0
! CHECK: %[[I_VAL:.*]] = fir.load %[[I_PRIV_DECL]]#0
! CHECK: %[[ADD_VAL:.*]] = arith.addi %[[X_VAL]], %[[I_VAL]]
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2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/Todo/omp-default-clause-inner-loop.f90
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Expand Up @@ -14,7 +14,7 @@
! CHECK: %[[const_3:.*]] = arith.constant 1 : i32
! CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[TEMP:.*]] : !fir.ref<i32>) {
! CHECK-NEXT: omp.loop_nest (%[[ARG:.*]]) : i32 = (%[[const_1]]) to (%[[const_2]]) inclusive step (%[[const_3]]) {
! CHECK: fir.store %[[ARG]] to %[[TEMP]] : !fir.ref<i32>
! CHECK: hlfir.assign %[[ARG]] to %[[TEMP]] : i32, !fir.ref<i32>
! EXPECTED: %[[temp_1:.*]] = fir.load %[[PRIVATE_Z]] : !fir.ref<i32>
! CHECK: %[[temp_1:.*]] = fir.load %{{.*}} : !fir.ref<i32>
! CHECK: %[[temp_2:.*]] = fir.load %[[TEMP]] : !fir.ref<i32>
Expand Down
4 changes: 2 additions & 2 deletions flang/test/Lower/OpenMP/copyin.f90
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Expand Up @@ -161,7 +161,7 @@ subroutine copyin_derived_type()
! CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[VAL_6:.*]] : !fir.ref<i32>) {
! CHECK-NEXT: omp.loop_nest (%[[VAL_14:.*]]) : i32 = (%[[VAL_11]]) to (%[[VAL_12]]) inclusive step (%[[VAL_13]]) {
! CHECK: %[[VAL_7:.*]]:2 = hlfir.declare %[[VAL_6]] {uniq_name = "_QFcombined_parallel_worksharing_loopEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
! CHECK: fir.store %[[VAL_14]] to %[[VAL_7]]#1 : !fir.ref<i32>
! CHECK: hlfir.assign %[[VAL_14]] to %[[VAL_7]]#1 : i32, !fir.ref<i32>
! CHECK: fir.call @_QPsub4(%[[VAL_9]]#1) fastmath<contract> : (!fir.ref<i32>) -> ()
! CHECK: omp.yield
! CHECK: }
Expand Down Expand Up @@ -326,7 +326,7 @@ subroutine common_1()
! CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[VAL_19:.*]] : !fir.ref<i32>) {
! CHECK-NEXT: omp.loop_nest (%[[VAL_37:.*]]) : i32 = (%[[VAL_34]]) to (%[[VAL_35]]) inclusive step (%[[VAL_36]]) {
! CHECK: %[[VAL_20:.*]]:2 = hlfir.declare %[[VAL_19]] {uniq_name = "_QFcommon_2Ei"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
! CHECK: fir.store %[[VAL_37]] to %[[VAL_20]]#1 : !fir.ref<i32>
! CHECK: hlfir.assign %[[VAL_37]] to %[[VAL_20]]#1 : i32, !fir.ref<i32>
! CHECK: %[[VAL_38:.*]] = fir.load %[[VAL_31]]#0 : !fir.ref<i32>
! CHECK: %[[VAL_39:.*]] = fir.load %[[VAL_20]]#0 : !fir.ref<i32>
! CHECK: %[[VAL_40:.*]] = arith.addi %[[VAL_38]], %[[VAL_39]] : i32
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2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/critical.f90
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Expand Up @@ -42,7 +42,7 @@ subroutine predetermined_privatization()
!CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[PRIV_I_ALLOC:.*]] : !fir.ref<i32>)
!CHECK: omp.loop_nest (%[[IV:[^[:space:]]+]])
!CHECK: %[[PRIV_I_DECL:.*]]:2 = hlfir.declare %[[PRIV_I_ALLOC]]
!CHECK: fir.store %[[IV]] to %[[PRIV_I_DECL]]#1
!CHECK: hlfir.assign %[[IV]] to %[[PRIV_I_DECL]]#1
!CHECK: omp.critical
!$omp critical
a(i) = a(i-1) + 1
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4 changes: 2 additions & 2 deletions flang/test/Lower/OpenMP/default-clause.f90
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Expand Up @@ -291,7 +291,7 @@ subroutine nested_default_clause_test4
!CHECK: omp.loop_nest (%[[ARG:.*]]) : i32 = (%[[CONST_LB]]) to (%[[CONST_UB]]) inclusive step (%[[CONST_STEP]]) {
!CHECK: %[[X_DECLARE:.*]]:2 = hlfir.declare %[[X_ALLOCA]] {{.*}}
!CHECK: %[[LOOP_VAR_DECLARE:.*]]:2 = hlfir.declare %[[LOOP_VAR_ALLOCA]] {{.*}}
!CHECK: fir.store %[[ARG]] to %[[LOOP_VAR_DECLARE]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %[[ARG]] to %[[LOOP_VAR_DECLARE]]#1 : i32, !fir.ref<i32>
!CHECK: %[[LOADED_X:.*]] = fir.load %[[X_DECLARE]]#0 : !fir.ref<i32>
!CHECK: %[[CONST:.*]] = arith.constant 1 : i32
!CHECK: %[[RESULT:.*]] = arith.addi %[[LOADED_X]], %[[CONST]] : i32
Expand Down Expand Up @@ -324,7 +324,7 @@ subroutine nested_default_clause_test5
! CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[LOOP_VAR:.*]] : !fir.ref<i32>) {
!CHECK: omp.loop_nest (%[[ARG:.*]]) : i32 = (%[[CONST_LB]]) to (%[[CONST_UB]]) inclusive step (%[[CONST_STEP]]) {
!CHECK: %[[LOOP_VAR_DECLARE:.*]]:2 = hlfir.declare %[[LOOP_VAR]] {{.*}}
!CHECK: fir.store %[[ARG]] to %[[LOOP_VAR_DECLARE]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %[[ARG]] to %[[LOOP_VAR_DECLARE]]#1 : i32, !fir.ref<i32>
!CHECK: %[[LOADED_X:.*]] = fir.load %[[X_VAR_DECLARE]]#0 : !fir.ref<i32>
!CHECK: %[[CONST:.*]] = arith.constant 1 : i32
!CHECK: %[[ADD:.*]] = arith.addi %[[LOADED_X]], %[[CONST]] : i32
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2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/generic-loop-rewriting.f90
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Expand Up @@ -50,7 +50,7 @@ end subroutine target_teams_loop
!CHECK: omp.loop_nest (%{{.*}}) : i32 =
!CHECK-SAME: (%[[LB]]) to (%[[UB]]) inclusive step (%[[STEP]]) {
!CHECK: %[[I_PRIV_DECL:.*]]:2 = hlfir.declare %[[I_PRIV_ARG]]
!CHECK: fir.store %{{.*}} to %[[I_PRIV_DECL]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %{{.*}} to %[[I_PRIV_DECL]]#1 : i32, !fir.ref<i32>
!CHECK: }
!CHECK: }
!CHECK: }
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2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/lastprivate-allocatable.f90
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Expand Up @@ -17,7 +17,7 @@
! if this is the last iteration
! CHECK: fir.if %{{.*}} {
! store loop IV
! CHECK: fir.store %{{.*}} to %[[VAL_18]]#1 : !fir.ref<i32>
! CHECK: hlfir.assign %{{.*}} to %[[VAL_18]]#1 : i32, !fir.ref<i32>
! assign private variable to original copy: realloc
! CHECK: %[[VAL_23:.*]] = fir.load %[[VAL_16]]#0 : !fir.ref<!fir.box<!fir.heap<i32>>>
! CHECK: %[[VAL_24:.*]] = fir.box_addr %[[VAL_23]] : (!fir.box<!fir.heap<i32>>) -> !fir.heap<i32>
Expand Down
2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/lastprivate-commonblock.f90
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Expand Up @@ -22,7 +22,7 @@
!CHECK: %[[V_GT:.*]] = arith.cmpi sgt, %[[V]], %{{.*}} : i32
!CHECK: %[[LAST_ITER:.*]] = arith.select %[[NEG_STEP]], %[[V_LT]], %[[V_GT]] : i1
!CHECK: fir.if %[[LAST_ITER]] {
!CHECK: fir.store %[[V]] to %{{.*}} : !fir.ref<i32>
!CHECK: hlfir.assign %[[V]] to %{{.*}} : i32, !fir.ref<i32>
!CHECK: %[[PRIVATE_X_VAL:.*]] = fir.load %[[PRIVATE_X_DECL]]#0 : !fir.ref<f32>
!CHECK: hlfir.assign %[[PRIVATE_X_VAL]] to %[[X_DECL]]#0 : f32, !fir.ref<f32>
!CHECK: %[[PRIVATE_Y_VAL:.*]] = fir.load %[[PRIVATE_Y_DECL]]#0 : !fir.ref<f32>
Expand Down
48 changes: 42 additions & 6 deletions flang/test/Lower/OpenMP/lastprivate-iv.f90
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@@ -1,5 +1,6 @@
! Test LASTPRIVATE with iteration variable.
! RUN: %flang_fc1 -emit-hlfir -fopenmp -o - %s 2>&1 | FileCheck %s
! RUN: %flang_fc1 -emit-fir -fopenmp -o - %s 2>&1 | FileCheck --check-prefix=CHECK-FIR %s

!CHECK-LABEL: func @_QPlastprivate_iv_inc

Expand All @@ -12,15 +13,15 @@
!CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[I_MEM:.*]] : !fir.ref<i32>) {
!CHECK-NEXT: omp.loop_nest (%[[IV:.*]]) : i32 = (%[[LB]]) to (%[[UB]]) inclusive step (%[[STEP]]) {
!CHECK: %[[I:.*]]:2 = hlfir.declare %[[I_MEM]] {uniq_name = "_QFlastprivate_iv_incEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
!CHECK: fir.store %[[IV]] to %[[I]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %[[IV]] to %[[I]]#1 : i32, !fir.ref<i32>
!CHECK: %[[V:.*]] = arith.addi %[[IV]], %[[STEP]] : i32
!CHECK: %[[C0:.*]] = arith.constant 0 : i32
!CHECK: %[[STEP_NEG:.*]] = arith.cmpi slt, %[[STEP]], %[[C0]] : i32
!CHECK: %[[V_LT:.*]] = arith.cmpi slt, %[[V]], %[[UB]] : i32
!CHECK: %[[V_GT:.*]] = arith.cmpi sgt, %[[V]], %[[UB]] : i32
!CHECK: %[[CMP:.*]] = arith.select %[[STEP_NEG]], %[[V_LT]], %[[V_GT]] : i1
!CHECK: fir.if %[[CMP]] {
!CHECK: fir.store %[[V]] to %[[I]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %[[V]] to %[[I]]#1 : i32, !fir.ref<i32>
!CHECK: %[[I_VAL:.*]] = fir.load %[[I]]#0 : !fir.ref<i32>
!CHECK: hlfir.assign %[[I_VAL]] to %[[I2]]#0 : i32, !fir.ref<i32>
!CHECK: }
Expand All @@ -46,15 +47,15 @@ subroutine lastprivate_iv_inc()
!CHECK: omp.wsloop private(@{{.*}} %{{.*}} -> %[[I_MEM:.*]] : !fir.ref<i32>) {
!CHECK-NEXT: omp.loop_nest (%[[IV:.*]]) : i32 = (%[[LB]]) to (%[[UB]]) inclusive step (%[[STEP]]) {
!CHECK: %[[I:.*]]:2 = hlfir.declare %[[I_MEM]] {uniq_name = "_QFlastprivate_iv_decEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
!CHECK: fir.store %[[IV]] to %[[I]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %[[IV]] to %[[I]]#1 : i32, !fir.ref<i32>
!CHECK: %[[V:.*]] = arith.addi %[[IV]], %[[STEP]] : i32
!CHECK: %[[C0:.*]] = arith.constant 0 : i32
!CHECK: %[[STEP_NEG:.*]] = arith.cmpi slt, %[[STEP]], %[[C0]] : i32
!CHECK: %[[V_LT:.*]] = arith.cmpi slt, %[[V]], %[[UB]] : i32
!CHECK: %[[V_GT:.*]] = arith.cmpi sgt, %[[V]], %[[UB]] : i32
!CHECK: %[[CMP:.*]] = arith.select %[[STEP_NEG]], %[[V_LT]], %[[V_GT]] : i1
!CHECK: fir.if %[[CMP]] {
!CHECK: fir.store %[[V]] to %[[I]]#1 : !fir.ref<i32>
!CHECK: hlfir.assign %[[V]] to %[[I]]#1 : i32, !fir.ref<i32>
!CHECK: %[[I_VAL:.*]] = fir.load %[[I]]#0 : !fir.ref<i32>
!CHECK: hlfir.assign %[[I_VAL]] to %[[I2]]#0 : i32, !fir.ref<i32>
!CHECK: }
Expand All @@ -78,13 +79,48 @@ subroutine lastprivate_iv_i1
!CHECK: omp.wsloop private({{.*}})
!CHECK: omp.loop_nest
!CHECK: fir.if %{{.*}} {
!CHECK: %[[I8_VAL:.*]] = fir.convert %{{.*}} : (i32) -> i8
!CHECK: fir.store %[[I8_VAL]] to %[[IV:.*]]#1 : !fir.ref<i8>
!CHECK: hlfir.assign %{{.*}} to %[[IV:.*]]#1 : i32, !fir.ref<i8>
!CHECK: %[[IV_VAL:.*]] = fir.load %[[IV]]#0 : !fir.ref<i8>
!CHECK: hlfir.assign %[[IV_VAL]] to %{{.*}}#0 : i8, !fir.ref<i8>
!CHECK: }


!$omp do lastprivate(i1)
do i1=1,8
enddo
!$omp end do
end subroutine

!CHECK: omp.wsloop private(@_QFlastprivate_iv_pointerEi_private_box_ptr_i32 %{{.*}}#0 -> %[[PRIVATE_IV:.*]] : !fir.ref<!fir.box<!fir.ptr<i32>>>) {
!CHECK: omp.loop_nest (%[[LOOP_INDEX:.*]]) : i64
!CHECK: %[[PRIVATE_IV_DECL:.*]]:2 = hlfir.declare %[[PRIVATE_IV]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFlastprivate_iv_pointerEi"} : (!fir.ref<!fir.box<!fir.ptr<i32>>>) -> (!fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.ref<!fir.box<!fir.ptr<i32>>>)
!CHECK: %[[LOOP_INDEX_INCR:.*]] = arith.addi %[[LOOP_INDEX]], %{{.*}} : i64
!CHECK: fir.if %{{.*}} {
!CHECK: %[[PRIVATE_IV_BOX:.*]] = fir.load %[[PRIVATE_IV_DECL]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[PRIVATE_IV_ADDR:.*]] = fir.box_addr %[[PRIVATE_IV_BOX]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK: hlfir.assign %[[LOOP_INDEX_INCR]] to %[[PRIVATE_IV_ADDR]] : i64, !fir.ptr<i32>
!CHECK: }
!CHECK: omp.yield
!CHECK: }
!CHECK: }

!CHECK-FIR: omp.wsloop private(@_QFlastprivate_iv_pointerEi_private_box_ptr_i32 %{{.*}} -> %[[PRIVATE_IV:.*]] : !fir.ref<!fir.box<!fir.ptr<i32>>>) {
!CHECK-FIR: omp.loop_nest (%[[LOOP_INDEX:.*]]) : i64
!CHECK-FIR: %[[PRIVATE_IV_DECL:.*]] = fir.declare %[[PRIVATE_IV]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFlastprivate_iv_pointerEi"} : (!fir.ref<!fir.box<!fir.ptr<i32>>>) -> !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK-FIR: %[[LOOP_INDEX_INCR:.*]] = arith.addi %[[LOOP_INDEX]], %{{.*}} : i64
!CHECK-FIR: fir.if %{{.*}} {
!CHECK-FIR: %[[PRIVATE_IV_BOX:.*]] = fir.load %[[PRIVATE_IV_DECL]] : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK-FIR: %[[PRIVATE_IV_ADDR:.*]] = fir.box_addr %[[PRIVATE_IV_BOX]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK-FIR: %[[LOOP_INDEX_CVT:.*]] = fir.convert %[[LOOP_INDEX_INCR]] : (i64) -> i32
!CHECK-FIR: fir.store %[[LOOP_INDEX_CVT]] to %[[PRIVATE_IV_ADDR]] : !fir.ptr<i32>
!CHECK-FIR: }
!CHECK-FIR: omp.yield
!CHECK-FIR: }
subroutine lastprivate_iv_pointer()
integer, pointer :: i

!$omp do lastprivate(i)
do i = 1, 20
end do
!$omp end do
end subroutine
6 changes: 3 additions & 3 deletions flang/test/Lower/OpenMP/lastprivate-simd.f90
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Expand Up @@ -39,9 +39,9 @@ subroutine simd_ivs
! CHECK: %[[IDO3_PRIV_DECL:.*]]:2 = hlfir.declare %[[IDO3_PRIV_ARG]] {uniq_name = "{{.*}}Eido3"}

! CHECK: fir.if %33 {
! CHECK: fir.store %{{.*}} to %[[IDO1_PRIV_DECL]]#1
! CHECK: fir.store %{{.*}} to %[[IDO2_PRIV_DECL]]#1
! CHECK: fir.store %{{.*}} to %[[IDO3_PRIV_DECL]]#1
! CHECK: hlfir.assign %{{.*}} to %[[IDO1_PRIV_DECL]]#1
! CHECK: hlfir.assign %{{.*}} to %[[IDO2_PRIV_DECL]]#1
! CHECK: hlfir.assign %{{.*}} to %[[IDO3_PRIV_DECL]]#1
! CHECK: %[[IDO1_VAL:.*]] = fir.load %[[IDO1_PRIV_DECL]]#0
! CHECK: hlfir.assign %[[IDO1_VAL]] to %[[IDO1_HOST_DECL]]#0
! CHECK: %[[IDO2_VAL:.*]] = fir.load %[[IDO2_PRIV_DECL]]#0
Expand Down
2 changes: 1 addition & 1 deletion flang/test/Lower/OpenMP/loop-directive.f90
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Expand Up @@ -15,7 +15,7 @@ subroutine test_no_clauses()
! CHECK: omp.simd private(@[[I_PRIV]] %{{.*}}#0 -> %[[ARG:.*]] : !fir.ref<i32>) {
! CHECK-NEXT: omp.loop_nest (%[[IV:.*]]) : i32 = (%{{.*}}) to (%{{.*}}) {{.*}} {
! CHECK: %[[ARG_DECL:.*]]:2 = hlfir.declare %[[ARG]]
! CHECK: fir.store %[[IV]] to %[[ARG_DECL]]#1 : !fir.ref<i32>
! CHECK: hlfir.assign %[[IV]] to %[[ARG_DECL]]#1 : i32, !fir.ref<i32>
! CHECK: }
! CHECK: }
!$omp loop
Expand Down
43 changes: 43 additions & 0 deletions flang/test/Lower/OpenMP/loop-pointer-variable.f90
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@@ -0,0 +1,43 @@
! This test checks lowering of OpenMP loops with pointer or allocatable loop index variable

!RUN: bbc -emit-hlfir -fopenmp %s -o - 2>&1 | FileCheck %s
!RUN: %flang_fc1 -emit-hlfir -fopenmp %s -o - 2>&1 | FileCheck %s

!CHECK-LABEL: QQmain
program loop_var
integer, pointer :: ip1, ip2
integer, allocatable :: ia1

!CHECK: omp.wsloop private(@_QFEip1_private_box_ptr_i32 %{{.*}}#0 -> %[[IP1_PVT:.*]], @_QFEip2_private_box_ptr_i32 %{{.*}}#0 -> %[[IP2_PVT:.*]] : !fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.ref<!fir.box<!fir.ptr<i32>>>)
!CHECK: omp.loop_nest (%[[IP1_INDX:.*]], %[[IP2_INDX:.*]]) : i64 = ({{.*}}) to ({{.*}}) inclusive step ({{.*}})
!CHECK: %[[IP1_PVT_DECL:.*]]:2 = hlfir.declare %[[IP1_PVT]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFEip1"} : (!fir.ref<!fir.box<!fir.ptr<i32>>>) -> (!fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.ref<!fir.box<!fir.ptr<i32>>>)
!CHECK: %[[IP2_PVT_DECL:.*]]:2 = hlfir.declare %[[IP2_PVT]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFEip2"} : (!fir.ref<!fir.box<!fir.ptr<i32>>>) -> (!fir.ref<!fir.box<!fir.ptr<i32>>>, !fir.ref<!fir.box<!fir.ptr<i32>>>)
!CHECK: %[[IP1:.*]] = fir.convert %[[IP1_INDX]] : (i64) -> i32
!CHECK: %[[IP1_BOX:.*]] = fir.load %[[IP1_PVT_DECL]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[IP1_ADDR:.*]] = fir.box_addr %[[IP1_BOX]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK: hlfir.assign %[[IP1]] to %[[IP1_ADDR]] : i32, !fir.ptr<i32>
!CHECK: %[[IP2:.*]] = fir.convert %[[IP2_INDX]] : (i64) -> i32
!CHECK: %[[IP2_BOX:.*]] = fir.load %[[IP2_PVT_DECL]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[IP2_ADDR:.*]] = fir.box_addr %[[IP2_BOX]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK: hlfir.assign %[[IP2]] to %[[IP2_ADDR]] : i32, !fir.ptr<i32>
!CHECK: omp.yield
!$omp do collapse(2)
do ip1 = 1, 10
do ip2 = 1, 20
end do
end do
!$omp end do

!CHECK: omp.simd private(@_QFEia1_private_box_heap_i32 %{{.*}}#0 -> %[[IA1_PVT:.*]] : !fir.ref<!fir.box<!fir.heap<i32>>>)
!CHECK: omp.loop_nest (%[[IA1_INDX:.*]]) : i64 = ({{.*}}) to ({{.*}}) inclusive step ({{.*}})
!CHECK: %[[IA1_PVT_DECL:.*]]:2 = hlfir.declare %[[IA1_PVT]] {fortran_attrs = #fir.var_attrs<allocatable>, uniq_name = "_QFEia1"} : (!fir.ref<!fir.box<!fir.heap<i32>>>) -> (!fir.ref<!fir.box<!fir.heap<i32>>>, !fir.ref<!fir.box<!fir.heap<i32>>>)
!CHECK: %[[IA1:.*]] = fir.convert %[[IA1_INDX]] : (i64) -> i32
!CHECK: %[[IA1_BOX:.*]] = fir.load %[[IA1_PVT_DECL]]#1 : !fir.ref<!fir.box<!fir.heap<i32>>>
!CHECK: %[[IA1_ADDR:.*]] = fir.box_addr %[[IA1_BOX]] : (!fir.box<!fir.heap<i32>>) -> !fir.heap<i32>
!CHECK: hlfir.assign %[[IA1]] to %[[IA1_ADDR]] : i32, !fir.heap<i32>
!CHECK: omp.yield
!$omp simd
do ia1 = 1, 10
end do
!$omp end simd
end program
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