[flang-commits] [flang] [Flang][OpenMP] Port OpenMP single tests to hlfir flow (PR #69877)

[Kiran Chandramohan via flang-commits]

================
@@ -0,0 +1,131 @@
+!RUN: %flang_fc1 -emit-hlfir -fopenmp %s -o - | FileCheck %s
+!RUN: bbc -emit-hlfir -fopenmp %s -o - | FileCheck %s
+
+!===============================================================================
+! Single construct
+!===============================================================================
+
+!CHECK-LABEL: func @_QPomp_single
+!CHECK-SAME: (%[[x:.*]]: !fir.ref<i32> {fir.bindc_name = "x"})
+subroutine omp_single(x)
+  integer, intent(inout) :: x
+  !CHECK: %[[X_DECL:.*]]:2 = hlfir.declare %[[x]] {fortran_attrs = #fir.var_attrs<intent_inout>, uniq_name = "_QFomp_singleEx"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+  !CHECK: omp.parallel
+  !$omp parallel
+  !CHECK: omp.single
+  !$omp single
+  !CHECK: %[[xval:.*]] = fir.load %[[X_DECL]]#0 : !fir.ref<i32>
+    !CHECK: %[[res:.*]] = arith.addi %[[xval]], %{{.*}} : i32
+    !CHECK: hlfir.assign %[[res]] to %[[X_DECL]]#0 : i32, !fir.ref<i32>
+    x = x + 12
+  !CHECK: omp.terminator
+  !$omp end single
+  !CHECK: omp.terminator
+  !$omp end parallel
+end subroutine omp_single
+
+!===============================================================================
+! Single construct with nowait
+!===============================================================================
+
+!CHECK-LABEL: func @_QPomp_single_nowait
+!CHECK-SAME: (%[[x:.*]]: !fir.ref<i32> {fir.bindc_name = "x"})
+subroutine omp_single_nowait(x)
+  integer, intent(inout) :: x
+  !CHECK:   %[[X_DECL:.*]]:2 = hlfir.declare %[[x]] {fortran_attrs = #fir.var_attrs<intent_inout>, uniq_name = "_QFomp_single_nowaitEx"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+  !CHECK: omp.parallel
+  !$omp parallel
+  !CHECK: omp.single nowait
+  !$omp single
+    !CHECK: %[[xval:.*]] = fir.load %[[X_DECL]]#0 : !fir.ref<i32>
+    !CHECK: %[[res:.*]] = arith.addi %[[xval]], %{{.*}} : i32
+    !CHECK: hlfir.assign %[[res]] to %[[X_DECL]]#0 : i32, !fir.ref<i32>
+    x = x + 12
+  !CHECK: omp.terminator
+  !$omp end single nowait
+  !CHECK: omp.terminator
+  !$omp end parallel
+end subroutine omp_single_nowait
+
+!===============================================================================
+! Single construct with allocate
+!===============================================================================
+
+!CHECK-LABEL: func @_QPsingle_allocate
+subroutine single_allocate()
+  use omp_lib
+  integer :: x
+  !CHECK: omp.parallel {
+  !$omp parallel
+  !CHECK: omp.single allocate(%{{.+}} : i32 -> %{{.+}} : !fir.ref<i32>) {
+  !$omp single allocate(omp_high_bw_mem_alloc: x) private(x)
+  !CHECK: arith.addi
+  x = x + 12
+  !CHECK: omp.terminator
+  !$omp end single
+  !CHECK: omp.terminator
+  !$omp end parallel
+end subroutine single_allocate
+
+!===============================================================================
+! Single construct with private/firstprivate
+!===============================================================================
+
+! CHECK-LABEL: func.func @_QPsingle_privatization(
+! CHECK-SAME:                                     %[[VAL_0:.*]]: !fir.ref<f32> {fir.bindc_name = "x"}, 
+! CHECK-SAME:                                     %[[VAL_1:.*]]: !fir.ref<f64> {fir.bindc_name = "y"}) {
+! CHECK:           %[[VAL_0_DECL:.*]]:2 = hlfir.declare %[[VAL_0]] {uniq_name = "_QFsingle_privatizationEx"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
+! CHECK:           %[[VAL_1_DECL:.*]]:2 = hlfir.declare %[[VAL_1]] {uniq_name = "_QFsingle_privatizationEy"} : (!fir.ref<f64>) -> (!fir.ref<f64>, !fir.ref<f64>)
+! CHECK:           omp.single   {
+! CHECK:             %[[X:.*]] = fir.alloca f32 {bindc_name = "x", pinned, uniq_name = "_QFsingle_privatizationEx"}
+! CHECK:             %[[X_DECL:.*]]:2 = hlfir.declare %[[X]] {uniq_name = "_QFsingle_privatizationEx"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
+! CHECK:             %[[Y:.*]] = fir.alloca f64 {bindc_name = "y", pinned, uniq_name = "_QFsingle_privatizationEy"}
+! CHECK:             %[[Y_DECL:.*]]:2 = hlfir.declare %[[Y]] {uniq_name = "_QFsingle_privatizationEy"} : (!fir.ref<f64>) -> (!fir.ref<f64>, !fir.ref<f64>)
+! CHECK:           %[[VAL_6:.*]] = fir.load %[[VAL_1_DECL]]#1 : !fir.ref<f64>
+! CHECK:           fir.store %[[VAL_6]] to %[[Y_DECL]]#1 : !fir.ref<f64>
+! CHECK:           fir.call @_QPbar(%[[X_DECL]]#1, %[[Y_DECL]]#1) fastmath<contract> : (!fir.ref<f32>, !fir.ref<f64>) -> ()
+! CHECK:           omp.terminator
+! CHECK:         }
+! CHECK:         return
+! CHECK:       }
+
+subroutine single_privatization(x, y)
+  real :: x
+  real(8) :: y
+
+  !$omp single private(x) firstprivate(y)
+  call bar(x, y)
+  !$omp end single
+end subroutine
+
+! CHECK-LABEL: func.func @_QPsingle_privatization2(
+! CHECK-SAME:                                      %[[VAL_0:.*]]: !fir.ref<f32> {fir.bindc_name = "x"},
+! CHECK-SAME:                                      %[[VAL_1:.*]]: !fir.ref<f64> {fir.bindc_name = "y"}) {
+! CHECK:         %[[VAL_0_DECL:.*]]:2 = hlfir.declare %[[VAL_0]] {uniq_name = "_QFsingle_privatization2Ex"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
+! CHECK:         %[[VAL_1_DECL:.*]]:2 = hlfir.declare %[[VAL_1]] {uniq_name = "_QFsingle_privatization2Ey"} : (!fir.ref<f64>) -> (!fir.ref<f64>, !fir.ref<f64>)
----------------
kiranchandramohan wrote:

Nit: Better to call these as `X` and `X_DECL`.

https://github.com/llvm/llvm-project/pull/69877