atomic-capture.f90 | Explore in Territory

! REQUIRES: openmp_runtime

! This test checks the lowering of atomic capture

! RUN: bbc %openmp_flags -fopenmp-version=50 -emit-hlfir %s -o - | FileCheck %s
! RUN: %flang_fc1 -emit-hlfir %openmp_flags -fopenmp-version=50 %s -o - | FileCheck %s


program OmpAtomicCapture
    use omp_lib                                                                                                       

!CHECK: %[[VAL_X_ALLOCA:.*]] = fir.alloca i32 {bindc_name = "x", uniq_name = "_QFEx"}
!CHECK: %[[VAL_X_DECLARE:.*]]:2 = hlfir.declare %[[VAL_X_ALLOCA]] {{.*}}
!CHECK: %[[VAL_Y_ALLOCA:.*]] = fir.alloca i32 {bindc_name = "y", uniq_name = "_QFEy"}
!CHECK: %[[VAL_Y_DECLARE:.*]]:2 = hlfir.declare %[[VAL_Y_ALLOCA]] {{.*}}
    integer :: x, y

!CHECK: %[[VAL_Y_LOADED:.*]] = fir.load %[[VAL_X_DECLARE]]#0 : !fir.ref<i32>
!CHECK: omp.atomic.capture hint(uncontended) {
!CHECK: omp.atomic.update %[[VAL_Y_DECLARE]]#1 : !fir.ref<i32> {
!CHECK: ^bb0(%[[ARG:.*]]: i32):
!CHECK: %[[TEMP:.*]] = arith.muli %[[VAL_Y_LOADED]], %[[ARG]] : i32
!CHECK: omp.yield(%[[TEMP]] : i32)
!CHECK: }
!CHECK: omp.atomic.read %[[VAL_X_DECLARE]]#1 = %[[VAL_Y_DECLARE]]#1 : !fir.ref<i32>, i32
!CHECK: }
    !$omp atomic hint(omp_sync_hint_uncontended) capture
        y = x * y 
        x = y
    !$omp end atomic

!CHECK: %[[VAL_20:.*]] = arith.constant 20 : i32
!CHECK: %[[VAL_8:.*]] = arith.constant 8 : i32
!CHECK: %[[VAL_X_LOADED:.*]] = fir.load %[[VAL_X_DECLARE]]#0 : !fir.ref<i32>
!CHECK: %[[SUB:.*]] = arith.subi %[[VAL_8]], %[[VAL_X_LOADED]] : i32
!CHECK: %[[NO_REASSOC:.*]] = hlfir.no_reassoc %[[SUB]] : i32
!CHECK: %[[ADD:.*]] = arith.addi  %[[VAL_20]], %[[NO_REASSOC]] : i32
!CHECK: omp.atomic.capture hint(nonspeculative) memory_order(acquire) {
!CHECK:   omp.atomic.read %[[VAL_X_DECLARE]]#1 = %[[VAL_Y_DECLARE]]#1 : !fir.ref<i32>, i32
!CHECK:   omp.atomic.write %[[VAL_Y_DECLARE]]#1 = %[[ADD]] : !fir.ref<i32>, i32
!CHECK: }
!CHECK: return
!CHECK: }
    !$omp atomic hint(omp_lock_hint_nonspeculative) capture acquire
        x = y
        y = 2 * 10 + (8 - x) 
    !$omp end atomic
end program


!CHECK: func.func @_QPpointers_in_atomic_capture() {
subroutine pointers_in_atomic_capture()

!CHECK: %[[VAL_A_ALLOCA:.*]] = fir.alloca !fir.box<!fir.ptr<i32>> {bindc_name = "a", uniq_name = "_QFpointers_in_atomic_captureEa"}
!CHECK: %[[ZERO:.*]] = fir.zero_bits !fir.ptr<i32>
!CHECK: %[[EMBOX:.*]] = fir.embox %[[ZERO]] : (!fir.ptr<i32>) -> !fir.box<!fir.ptr<i32>>
!CHECK: fir.store %[[EMBOX]] to %[[VAL_A_ALLOCA]] : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[VAL_A_DECLARE:.*]]:2 = hlfir.declare %[[VAL_A_ALLOCA]] {{.*}}
!CHECK: %[[VAL_B_ALLOCA:.*]] = fir.alloca !fir.box<!fir.ptr<i32>> {bindc_name = "b", uniq_name = "_QFpointers_in_atomic_captureEb"}
!CHECK: %[[ZERO:.*]] = fir.zero_bits !fir.ptr<i32>
!CHECK: %[[EMBOX:.*]] = fir.embox %[[ZERO]] : (!fir.ptr<i32>) -> !fir.box<!fir.ptr<i32>>
!CHECK: fir.store %[[EMBOX]] to %[[VAL_B_ALLOCA]] : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[VAL_B_DECLARE:.*]]:2 = hlfir.declare %[[VAL_B_ALLOCA]] {{.*}}
!CHECK: %[[VAL_C_ALLOCA:.*]] = fir.alloca i32 {bindc_name = "c", fir.target, uniq_name = "_QFpointers_in_atomic_captureEc"}
!CHECK: %[[VAL_C_DECLARE:.*]]:2 = hlfir.declare %[[VAL_C_ALLOCA]] {{.*}}
!CHECK: %[[VAL_D_ALLOCA:.*]] = fir.alloca i32 {bindc_name = "d", fir.target, uniq_name = "_QFpointers_in_atomic_captureEd"}
!CHECK: %[[VAL_D_DECLARE:.*]]:2 = hlfir.declare %[[VAL_D_ALLOCA]] {{.*}}
    integer, pointer :: a, b
    integer, target :: c, d

!CHECK: %[[EMBOX:.*]] = fir.embox %[[VAL_C_DECLARE]]#1 : (!fir.ref<i32>) -> !fir.box<!fir.ptr<i32>>
!CHECK: fir.store %[[EMBOX]] to %[[VAL_A_DECLARE]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[EMBOX:.*]] = fir.embox %[[VAL_D_DECLARE]]#1 : (!fir.ref<i32>) -> !fir.box<!fir.ptr<i32>>
!CHECK: fir.store %[[EMBOX]] to %[[VAL_B_DECLARE]]#1 : !fir.ref<!fir.box<!fir.ptr<i32>>>
    a=>c
    b=>d

!CHECK: %[[VAL_A_LOADED:.*]] = fir.load %[[VAL_A_DECLARE]]#0 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[VAL_A_BOX_ADDR:.*]] = fir.box_addr %[[VAL_A_LOADED]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK: %[[VAL_B_LOADED:.*]] = fir.load %[[VAL_B_DECLARE]]#0 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[VAL_B_BOX_ADDR:.*]] = fir.box_addr %[[VAL_B_LOADED]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK: %[[VAL_B_LOADED_2:.*]] = fir.load %[[VAL_B_DECLARE]]#0 : !fir.ref<!fir.box<!fir.ptr<i32>>>
!CHECK: %[[VAL_B_BOX_ADDR_2:.*]] = fir.box_addr %[[VAL_B_LOADED_2]] : (!fir.box<!fir.ptr<i32>>) -> !fir.ptr<i32>
!CHECK: %[[VAL_B:.*]] = fir.load %[[VAL_B_BOX_ADDR_2]] : !fir.ptr<i32>
!CHECK: omp.atomic.capture {
!CHECK: omp.atomic.update %[[VAL_A_BOX_ADDR]] : !fir.ptr<i32> {
!CHECK: ^bb0(%[[ARG:.*]]: i32):
!CHECK: %[[TEMP:.*]] = arith.addi %[[ARG]], %[[VAL_B]] : i32
!CHECK: omp.yield(%[[TEMP]] : i32)
!CHECK: }
!CHECK: omp.atomic.read %[[VAL_B_BOX_ADDR]] = %[[VAL_A_BOX_ADDR]] : !fir.ptr<i32>, i32
!CHECK: }
!CHECK: return
!CHECK: }
    !$omp atomic capture
        a = a + b
        b = a
    !$omp end atomic
end subroutine
llvm/flang/test/Lower/OpenMP/atomic-capture.f90
