[flang] [llvm] [mlir] [OpenMP][flang] Lowering of OpenMP custom reductions to MLIR (PR #168417)

[Jan Leyonberg via llvm-commits]

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@@ -0,0 +1,33 @@
+! This test checks lowering of OpenMP declare reduction Directive.
+
+!RUN: %flang_fc1 -emit-hlfir -fopenmp -fopenmp-version=52 %s -o - | FileCheck %s
+
+subroutine declare_red()
+  integer :: my_var
+!CHECK: omp.declare_reduction @my_red : i32 init {
+!CHECK: ^bb0(%[[ARGI_0:.*]]: i32):
+!CHECK:    %[[OMP_PRIV:.*]] = fir.alloca i32
+!CHECK:    %[[OMP_ORIG:.*]] = fir.alloca i32
+!CHECK:    fir.store %[[ARGI_0]] to %[[OMP_ORIG]] : !fir.ref<i32>
+!CHECK:    %[[OMP_ORIG_DECL:.*]]:2 = hlfir.declare %[[OMP_ORIG]] {uniq_name = "omp_orig"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+!CHECK:    fir.store %[[ARGI_0]] to %[[OMP_PRIV]] : !fir.ref<i32>
+!CHECK:    %[[OMP_PRIV_DECL:.*]]:2 = hlfir.declare %[[OMP_PRIV]] {uniq_name = "omp_priv"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
+!CHECK:    %[[CONST_0:.*]] = arith.constant 0 : i32
+!CHECK:    omp.yield(%[[CONST_0]] : i32)
+!CHECK: } combiner {
+!CHECK:  ^bb0(%[[ARGC_0:.*]]: i32, %[[ARGC_1:.*]]: i32):
+!CHECK:    %[[OMP_OUT:.*]] = fir.alloca i32
+!CHECK:    %[[OMP_IN:.*]]1 = fir.alloca i32
+!CHECK:    fir.store %[[ARGC_1]] to %1 : !fir.ref<i32>
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jsjodin wrote:

Fixed. I updated some other tests as well with the same issue.

https://github.com/llvm/llvm-project/pull/168417