diff --git a/flang/lib/Lower/OpenMP/OpenMP.cpp b/flang/lib/Lower/OpenMP/OpenMP.cpp
index 625a8c83c369..1f280a02a655 100644
--- a/flang/lib/Lower/OpenMP/OpenMP.cpp
+++ b/flang/lib/Lower/OpenMP/OpenMP.cpp
@@ -1494,13 +1494,26 @@ genParallelOp(lower::AbstractConverter &converter, lower::SymMap &symTable,
     allSymbols.append(dsp.getAllSymbolsToPrivatize().begin(),
                       dsp.getAllSymbolsToPrivatize().end());
 
-    for (auto [arg, prv] : llvm::zip_equal(allSymbols, region.getArguments())) {
-      converter.bindSymbol(*arg, hlfir::translateToExtendedValue(
-                                     loc, firOpBuilder, hlfir::Entity{prv},
-                                     /*contiguousHint=*/
-                                     evaluate::IsSimplyContiguous(
-                                         *arg, converter.getFoldingContext()))
-                                     .first);
+    unsigned argIdx = 0;
+    for (const semantics::Symbol *arg : allSymbols) {
+      auto bind = [&](const semantics::Symbol *sym) {
+        mlir::BlockArgument blockArg = region.getArgument(argIdx);
+        ++argIdx;
+        converter.bindSymbol(*sym,
+                             hlfir::translateToExtendedValue(
+                                 loc, firOpBuilder, hlfir::Entity{blockArg},
+                                 /*contiguousHint=*/
+                                 evaluate::IsSimplyContiguous(
+                                     *sym, converter.getFoldingContext()))
+                                 .first);
+      };
+
+      if (const auto *commonDet =
+              arg->detailsIf<semantics::CommonBlockDetails>()) {
+        for (const auto &mem : commonDet->objects())
+          bind(&*mem);
+      } else
+        bind(arg);
     }
 
     return allSymbols;
diff --git a/flang/test/Lower/OpenMP/firstprivate-commonblock.f90 b/flang/test/Lower/OpenMP/firstprivate-commonblock.f90
index d0fcdac76ad7..0fa0d2bc3249 100644
--- a/flang/test/Lower/OpenMP/firstprivate-commonblock.f90
+++ b/flang/test/Lower/OpenMP/firstprivate-commonblock.f90
@@ -1,4 +1,6 @@
-! RUN: %flang_fc1 -emit-hlfir -fopenmp -o - %s 2>&1 | FileCheck %s
+! RUN: %flang_fc1 -emit-hlfir -fopenmp \
+! RUN:   -mmlir --openmp-enable-delayed-privatization=true -o - %s 2>&1 \
+! RUN: | FileCheck %s
 
 !CHECK: func.func @_QPfirstprivate_common() {
 !CHECK: %[[val_0:.*]] = fir.address_of(@c_) : !fir.ref<!fir.array<8xi8>>
@@ -12,15 +14,9 @@
 !CHECK: %[[val_5:.*]] = fir.coordinate_of %[[val_4]], %[[val_c4]] : (!fir.ref<!fir.array<?xi8>>, index) -> !fir.ref<i8>
 !CHECK: %[[val_6:.*]] = fir.convert %[[val_5]] : (!fir.ref<i8>) -> !fir.ref<f32>
 !CHECK: %[[VAL_6_DECL:.*]]:2 = hlfir.declare %[[val_6]] {uniq_name = "_QFfirstprivate_commonEy"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
-!CHECK: omp.parallel {
-!CHECK: %[[val_7:.*]] = fir.alloca f32 {bindc_name = "x", pinned, uniq_name = "_QFfirstprivate_commonEx"}
+!CHECK: omp.parallel private(@{{.*}} %{{.*}}#0 -> %[[val_7:.*]] : {{.*}}, @{{.*}} %{{.*}}#0 -> %[[val_9:.*]] : {{.*}}) {
 !CHECK: %[[VAL_7_DECL:.*]]:2 = hlfir.declare %[[val_7]] {uniq_name = "_QFfirstprivate_commonEx"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
-!CHECK: %[[val_8:.*]] = fir.load %[[VAL_3_DECL]]#0 : !fir.ref<f32>
-!CHECK: hlfir.assign %[[val_8]] to %[[VAL_7_DECL]]#0 temporary_lhs : f32, !fir.ref<f32>
-!CHECK: %[[val_9:.*]] = fir.alloca f32 {bindc_name = "y", pinned, uniq_name = "_QFfirstprivate_commonEy"}
 !CHECK: %[[VAL_9_DECL:.*]]:2 = hlfir.declare %[[val_9]] {uniq_name = "_QFfirstprivate_commonEy"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
-!CHECK: %[[val_10:.*]] = fir.load %[[VAL_6_DECL]]#0 : !fir.ref<f32>
-!CHECK: hlfir.assign %[[val_10]] to %[[VAL_9_DECL]]#0 temporary_lhs : f32, !fir.ref<f32>
 !CHECK: omp.terminator
 !CHECK: }
 !CHECK: return
diff --git a/flang/test/Lower/OpenMP/private-commonblock.f90 b/flang/test/Lower/OpenMP/private-commonblock.f90
index ee580594f7c3..20f6cf57c2ae 100644
--- a/flang/test/Lower/OpenMP/private-commonblock.f90
+++ b/flang/test/Lower/OpenMP/private-commonblock.f90
@@ -1,10 +1,10 @@
-! RUN: %flang_fc1 -emit-hlfir -fopenmp -o - %s 2>&1 | FileCheck %s
+! RUN: %flang_fc1 -emit-hlfir -fopenmp \
+! RUN:   -mmlir --openmp-enable-delayed-privatization=true -o - %s 2>&1 \
+! RUN: | FileCheck %s
 
 !CHECK: func.func @_QPprivate_common() {
-!CHECK: omp.parallel {
-!CHECK: %[[X:.*]] = fir.alloca f32 {bindc_name = "x", pinned, uniq_name = "_QFprivate_commonEx"}
+!CHECK: omp.parallel private(@{{.*}} %{{.*}}#0 -> %[[X:.*]] : {{.*}}, @{{.*}} %{{.*}}#0 -> %[[Y:.*]] : {{.*}}) {
 !CHECK: %[[X_DECL:.*]]:2 = hlfir.declare %[[X]] {uniq_name = "_QFprivate_commonEx"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
-!CHECK: %[[Y:.*]] = fir.alloca f32 {bindc_name = "y", pinned, uniq_name = "_QFprivate_commonEy"}
 !CHECK: %[[Y_DECL:.*]]:2 = hlfir.declare %[[Y]] {uniq_name = "_QFprivate_commonEy"} : (!fir.ref<f32>) -> (!fir.ref<f32>, !fir.ref<f32>)
 !CHECK: omp.terminator
 !CHECK: }
@@ -48,17 +48,13 @@ end subroutine
 !CHECK:    %[[D_REF:.*]] = fir.convert %[[D_DECL]]#1 : (!fir.ref<!fir.array<5x!fir.char<1,5>>>) -> !fir.ref<!fir.char<1,5>>
 !CHECK:    %[[D_BOX:.*]] = fir.emboxchar %[[D_REF]], %[[TP5]] : (!fir.ref<!fir.char<1,5>>, index) -> !fir.boxchar<1>
 !CHECK:    fir.call @_QPsub1(%[[A_DECL]]#1, %[[B_DECL]]#1, %[[C_BOX]], %[[D_BOX]]) fastmath<contract> : (!fir.ref<i32>, !fir.ref<!fir.array<10xf32>>, !fir.boxchar<1>, !fir.boxchar<1>) -> ()
-!CHECK:        omp.parallel {
-!CHECK:      %[[A_PVT_REF:.*]] = fir.alloca i32 {bindc_name = "a", pinned, uniq_name = "_QFprivate_clause_commonblockEa"}
+!CHECK:    omp.parallel private(@{{.*}} %{{.*}}#0 -> %[[A_PVT_REF:.*]] : {{.*}}, @{{.*}} %{{.*}}#0 -> %[[B_PVT_REF:.*]] : {{.*}}, @{{.*}} %{{.*}}#0 -> %[[C_PVT_REF:.*]] : {{.*}}, @{{.*}} %{{.*}}#0 -> %[[D_PVT_REF:.*]] : {{.*}}) {
 !CHECK:      %[[A_PVT_DECL:.*]]:2 = hlfir.declare %[[A_PVT_REF]] {uniq_name = "_QFprivate_clause_commonblockEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
-!CHECK:      %[[B_PVT_REF:.*]] = fir.alloca !fir.array<10xf32> {bindc_name = "b", pinned, uniq_name = "_QFprivate_clause_commonblockEb"}
-!CHECK:      %[[SH10:.*]] = fir.shape %c10 : (index) -> !fir.shape<1>
+!CHECK:      %[[SH10:.*]] = fir.shape %c10{{.*}} : (index) -> !fir.shape<1>
 !CHECK:      %[[B_PVT_DECL:.*]]:2 = hlfir.declare %[[B_PVT_REF]](%[[SH10]]) {uniq_name = "_QFprivate_clause_commonblockEb"} : (!fir.ref<!fir.array<10xf32>>, !fir.shape<1>) -> (!fir.ref<!fir.array<10xf32>>, !fir.ref<!fir.array<10xf32>>)
-!CHECK:      %[[C_PVT_REF:.*]] = fir.alloca !fir.char<1,5> {bindc_name = "c", pinned, uniq_name = "_QFprivate_clause_commonblockEc"}
 !CHECK:      %[[C_PVT_DECL:.*]]:2 = hlfir.declare %[[C_PVT_REF]] typeparams %{{.*}} {uniq_name = "_QFprivate_clause_commonblockEc"} : (!fir.ref<!fir.char<1,5>>, index) -> (!fir.ref<!fir.char<1,5>>, !fir.ref<!fir.char<1,5>>)
-!CHECK:      %[[D_PVT_REF:.*]] = fir.alloca !fir.array<5x!fir.char<1,5>> {bindc_name = "d", pinned, uniq_name = "_QFprivate_clause_commonblockEd"}
-!CHECK:      %[[SH5:.*]] = fir.shape %c5_1 : (index) -> !fir.shape<1>
-!CHECK:      %[[D_PVT_DECL:.*]]:2 = hlfir.declare %[[D_PVT_REF]](%[[SH5]]) typeparams %[[TP5]] {uniq_name = "_QFprivate_clause_commonblockEd"} : (!fir.ref<!fir.array<5x!fir.char<1,5>>>, !fir.shape<1>, index) -> (!fir.ref<!fir.array<5x!fir.char<1,5>>>, !fir.ref<!fir.array<5x!fir.char<1,5>>>)
+!CHECK:      %[[SH5:.*]] = fir.shape %c5{{.*}} : (index) -> !fir.shape<1>
+!CHECK:      %[[D_PVT_DECL:.*]]:2 = hlfir.declare %[[D_PVT_REF]](%[[SH5]]) typeparams %c5{{.*}} {uniq_name = "_QFprivate_clause_commonblockEd"} : (!fir.ref<!fir.array<5x!fir.char<1,5>>>, !fir.shape<1>, index) -> (!fir.ref<!fir.array<5x!fir.char<1,5>>>, !fir.ref<!fir.array<5x!fir.char<1,5>>>)
 !CHECK:      %[[C_PVT_BOX:.*]] = fir.emboxchar %[[C_PVT_DECL]]#1, %{{.*}} : (!fir.ref<!fir.char<1,5>>, index) -> !fir.boxchar<1>
 !CHECK:      %[[D_PVT_REF:.*]] = fir.convert %[[D_PVT_DECL]]#1 : (!fir.ref<!fir.array<5x!fir.char<1,5>>>) -> !fir.ref<!fir.char<1,5>>
 !CHECK:      %[[D_PVT_BOX:.*]] = fir.emboxchar %[[D_PVT_REF]], %{{.*}} : (!fir.ref<!fir.char<1,5>>, index) -> !fir.boxchar<1>
@@ -98,10 +94,8 @@ end subroutine
 !CHECK:    %[[C_ADDR:.*]] = fir.box_addr %[[C_BOX]] : (!fir.box<!fir.ptr<!fir.complex<4>>>) -> !fir.ptr<!fir.complex<4>>
 !CHECK:    %[[C_REF:.*]] = fir.convert %[[C_ADDR]] : (!fir.ptr<!fir.complex<4>>) -> !fir.ref<!fir.complex<4>>
 !CHECK:    fir.call @_QPsub4(%[[C_REF]], %[[A_DECL]]#1) fastmath<contract> : (!fir.ref<!fir.complex<4>>, !fir.ref<i32>) -> ()
-!CHECK:    omp.parallel {
-!CHECK:      %[[C_PVT_REF:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.complex<4>>> {bindc_name = "c", pinned, uniq_name = "_QFprivate_clause_commonblock_pointerEc"}
+!CHECK: omp.parallel private(@{{.*}} %{{.*}}#0 -> %[[C_PVT_REF:.*]] : {{.*}}, @{{.*}} %{{.*}}#0 -> %[[A_PVT_REF:.*]] : {{.*}}) {
 !CHECK:      %[[C_PVT_DECL:.*]]:2 = hlfir.declare %[[C_PVT_REF]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFprivate_clause_commonblock_pointerEc"} : (!fir.ref<!fir.box<!fir.ptr<!fir.complex<4>>>>) -> (!fir.ref<!fir.box<!fir.ptr<!fir.complex<4>>>>, !fir.ref<!fir.box<!fir.ptr<!fir.complex<4>>>>)
-!CHECK:      %[[A_PVT_REF:.*]] = fir.alloca i32 {bindc_name = "a", pinned, uniq_name = "_QFprivate_clause_commonblock_pointerEa"}
 !CHECK:      %[[A_PVT_DECL:.*]]:2 = hlfir.declare %[[A_PVT_REF]] {uniq_name = "_QFprivate_clause_commonblock_pointerEa"} : (!fir.ref<i32>) -> (!fir.ref<i32>, !fir.ref<i32>)
 !CHECK:      %[[C_PVT_BOX:.*]] = fir.load %[[C_PVT_DECL]]#0 : !fir.ref<!fir.box<!fir.ptr<!fir.complex<4>>>>
 !CHECK:      %[[C_PVT_ADDR:.*]] = fir.box_addr %[[C_PVT_BOX]] : (!fir.box<!fir.ptr<!fir.complex<4>>>) -> !fir.ptr<!fir.complex<4>>