llvm/flang/test/Lower/OpenMP/lastprivate-iv.f90

! Test LASTPRIVATE with iteration variable.
! RUN: %flang_fc1 -emit-hlfir -fopenmp -o - %s 2>&1 | FileCheck %s

!CHECK-LABEL: func @_QPlastprivate_iv_inc

!CHECK:      %[[I2_MEM:.*]] = fir.alloca i32 {bindc_name = "i", uniq_name = "_QFlastprivate_iv_incEi"}
!CHECK:      %[[I2:.*]]:2 = hlfir.declare %[[I2_MEM]] {uniq_name = "_QFlastprivate_iv_incEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)

!CHECK:      %[[I_MEM:.*]] = fir.alloca i32 {bindc_name = "i", pinned, {{.*}}}
!CHECK:      %[[I:.*]]:2 = hlfir.declare %[[I_MEM]] {uniq_name = "_QFlastprivate_iv_incEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)

!CHECK:      %[[LB:.*]] = arith.constant 4 : i32
!CHECK:      %[[UB:.*]] = arith.constant 10 : i32
!CHECK:      %[[STEP:.*]]  = arith.constant 3 : i32
!CHECK:      omp.wsloop {
!CHECK-NEXT:   omp.loop_nest (%[[IV:.*]]) : i32 = (%[[LB]]) to (%[[UB]]) inclusive step (%[[STEP]]) {
!CHECK:          fir.store %[[IV]] to %[[I]]#1 : !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:            %[[I_VAL:.*]] = fir.load %[[I]]#0 : !fir.ref<i32>
!CHECK:            hlfir.assign %[[I_VAL]] to %[[I2]]#0 : i32, !fir.ref<i32>
!CHECK:          }
!CHECK:          omp.yield
!CHECK:        }
!CHECK:        omp.terminator
!CHECK:      }
subroutine lastprivate_iv_inc()
  integer :: i

  !$omp do lastprivate(i)
  do i = 4, 10, 3
  end do
  !$omp end do
end subroutine

!CHECK-LABEL: func @_QPlastprivate_iv_dec

!CHECK:      %[[I2_MEM:.*]] = fir.alloca i32 {bindc_name = "i", uniq_name = "_QFlastprivate_iv_decEi"}
!CHECK:      %[[I2:.*]]:2 = hlfir.declare %[[I2_MEM]] {uniq_name = "_QFlastprivate_iv_decEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)

!CHECK:      %[[I_MEM:.*]] = fir.alloca i32 {bindc_name = "i", pinned, {{.*}}}
!CHECK:      %[[I:.*]]:2 = hlfir.declare %[[I_MEM]] {uniq_name = "_QFlastprivate_iv_decEi"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)

!CHECK:      %[[LB:.*]] = arith.constant 10 : i32
!CHECK:      %[[UB:.*]] = arith.constant 1 : i32
!CHECK:      %[[STEP:.*]]  = arith.constant -3 : i32
!CHECK:      omp.wsloop {
!CHECK-NEXT:   omp.loop_nest (%[[IV:.*]]) : i32 = (%[[LB]]) to (%[[UB]]) inclusive step (%[[STEP]]) {
!CHECK:          fir.store %[[IV]] to %[[I]]#1 : !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:            %[[I_VAL:.*]] = fir.load %[[I]]#0 : !fir.ref<i32>
!CHECK:            hlfir.assign %[[I_VAL]] to %[[I2]]#0 : i32, !fir.ref<i32>
!CHECK:          }
!CHECK:          omp.yield
!CHECK:        }
!CHECK:        omp.terminator
!CHECK:      }
subroutine lastprivate_iv_dec()
  integer :: i

  !$omp do lastprivate(i)
  do i = 10, 1, -3
  end do
  !$omp end do
end subroutine


!CHECK-LABEL:  @_QPlastprivate_iv_i1
subroutine lastprivate_iv_i1
  integer*1 :: i1
  i1=0
!CHECK:    omp.wsloop
!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:          %[[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