[flang-commits] [flang] e1aa8ad - [flang][OpenMP] Fix bug in emitting `dealloc` logic (#93641)

[via flang-commits]

Author: Kareem Ergawy
Date: 2024-05-29T11:58:59+02:00
New Revision: e1aa8ad6faa1524f12338ca58d1eadfde6f29f34

URL: https://github.com/llvm/llvm-project/commit/e1aa8ad6faa1524f12338ca58d1eadfde6f29f34
DIFF: https://github.com/llvm/llvm-project/commit/e1aa8ad6faa1524f12338ca58d1eadfde6f29f34.diff

LOG: [flang][OpenMP] Fix bug in emitting `dealloc` logic (#93641)

Fixes a bug in emiting deacllocation logic when delayed privatization is
disabled. I introduced the bug when implementing delayed privatization
for allocatables: when delayed privatization is disabled the
deacllocation ops are emitted for only one allocatable variables.

Added: 
    flang/test/Lower/OpenMP/allocatable-multiple-vars.f90

Modified: 
    flang/lib/Lower/OpenMP/DataSharingProcessor.cpp

Removed: 
    


################################################################################
diff  --git a/flang/lib/Lower/OpenMP/DataSharingProcessor.cpp b/flang/lib/Lower/OpenMP/DataSharingProcessor.cpp
index b722e19272ca1..557a9685024c5 100644
--- a/flang/lib/Lower/OpenMP/DataSharingProcessor.cpp
+++ b/flang/lib/Lower/OpenMP/DataSharingProcessor.cpp
@@ -86,7 +86,7 @@ void DataSharingProcessor::insertDeallocs() {
     if (semantics::IsAllocatable(sym->GetUltimate())) {
       if (!useDelayedPrivatization) {
         converter.createHostAssociateVarCloneDealloc(*sym);
-        return;
+        continue;
       }
 
       lower::SymbolBox hsb = converter.lookupOneLevelUpSymbol(*sym);

diff  --git a/flang/test/Lower/OpenMP/allocatable-multiple-vars.f90 b/flang/test/Lower/OpenMP/allocatable-multiple-vars.f90
new file mode 100644
index 0000000000000..e6450a13e13a0
--- /dev/null
+++ b/flang/test/Lower/OpenMP/allocatable-multiple-vars.f90
@@ -0,0 +1,28 @@
+! Test early privatization for multiple allocatable variables.
+
+! RUN: %flang_fc1 -emit-hlfir -fopenmp -mmlir --openmp-enable-delayed-privatization=false \
+! RUN:   -o - %s 2>&1 | FileCheck %s
+
+! RUN: bbc -emit-hlfir -fopenmp --openmp-enable-delayed-privatization=false -o - %s 2>&1 |\
+! RUN:   FileCheck %s
+
+subroutine delayed_privatization_allocatable
+  implicit none
+  integer, allocatable :: var1, var2
+
+!$omp parallel private(var1, var2)
+  var1 = 10
+  var2 = 20
+!$omp end parallel
+end subroutine
+
+! Verify that private versions of each variable are both allocated and freed
+! within the parallel region.
+
+! CHECK:      omp.parallel {
+! CHECK:        fir.allocmem
+! CHECK:        fir.allocmem
+! CHECK:        fir.freemem
+! CHECK:        fir.freemem
+! CHECK:        omp.terminator
+! CHECK-NEXT: }