diff --git a/flang/lib/Lower/OpenACC.cpp b/flang/lib/Lower/OpenACC.cpp
--- a/flang/lib/Lower/OpenACC.cpp
+++ b/flang/lib/Lower/OpenACC.cpp
@@ -992,7 +992,8 @@
   addOperand(operands, operandSegments, selfCond);
   if constexpr (!std::is_same_v<Op, mlir::acc::KernelsOp>)
     addOperands(operands, operandSegments, reductionOperands);
-  operandSegments.append({0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0});
+  if constexpr (!std::is_same_v<Op, mlir::acc::ParallelOp>)
+    operandSegments.append({0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0});
   if constexpr (!std::is_same_v<Op, mlir::acc::KernelsOp>) {
     addOperands(operands, operandSegments, privateOperands);
     addOperands(operands, operandSegments, firstprivateOperands);
diff --git a/flang/lib/Optimizer/Transforms/OpenACC/OpenACCDataOperandConversion.cpp b/flang/lib/Optimizer/Transforms/OpenACC/OpenACCDataOperandConversion.cpp
--- a/flang/lib/Optimizer/Transforms/OpenACC/OpenACCDataOperandConversion.cpp
+++ b/flang/lib/Optimizer/Transforms/OpenACC/OpenACCDataOperandConversion.cpp
@@ -133,17 +133,6 @@
   target.addDynamicallyLegalOp<acc::ParallelOp>(
       [allDataOperandsAreConverted](acc::ParallelOp op) {
         return allDataOperandsAreConverted(op.getReductionOperands()) &&
-               allDataOperandsAreConverted(op.getCopyOperands()) &&
-               allDataOperandsAreConverted(op.getCopyinOperands()) &&
-               allDataOperandsAreConverted(op.getCopyinReadonlyOperands()) &&
-               allDataOperandsAreConverted(op.getCopyoutOperands()) &&
-               allDataOperandsAreConverted(op.getCopyoutZeroOperands()) &&
-               allDataOperandsAreConverted(op.getCreateOperands()) &&
-               allDataOperandsAreConverted(op.getCreateZeroOperands()) &&
-               allDataOperandsAreConverted(op.getNoCreateOperands()) &&
-               allDataOperandsAreConverted(op.getPresentOperands()) &&
-               allDataOperandsAreConverted(op.getDevicePtrOperands()) &&
-               allDataOperandsAreConverted(op.getAttachOperands()) &&
                allDataOperandsAreConverted(op.getGangPrivateOperands()) &&
                allDataOperandsAreConverted(op.getGangFirstPrivateOperands());
       });
diff --git a/flang/test/Transforms/OpenACC/convert-data-operands-to-llvmir.fir b/flang/test/Transforms/OpenACC/convert-data-operands-to-llvmir.fir
deleted file mode 100644
--- a/flang/test/Transforms/OpenACC/convert-data-operands-to-llvmir.fir
+++ /dev/null
@@ -1,29 +0,0 @@
-// RUN: fir-opt -fir-openacc-data-operand-conversion='use-opaque-pointers=1' -split-input-file %s | FileCheck %s
-// RUN: fir-opt -fir-openacc-data-operand-conversion='use-opaque-pointers=1' -split-input-file %s | fir-opt -split-input-file --fir-to-llvm-ir | FileCheck %s --check-prefix=LLVMIR
-
-fir.global internal @_QFEa : !fir.array<10xf32> {
-  %0 = fir.undefined !fir.array<10xf32>
-  fir.has_value %0 : !fir.array<10xf32>
-}
-
-func.func @_QQsub_parallel() attributes {fir.bindc_name = "test"} {
-  %0 = fir.address_of(@_QFEa) : !fir.ref<!fir.array<10xf32>>
-  %1 = fir.alloca i32 {bindc_name = "i", uniq_name = "_QFEi"}
-  acc.parallel copyin(%0: !fir.ref<!fir.array<10xf32>>) {
-    acc.loop {
-      acc.yield
-    }
-    acc.yield
-  }
-  return
-}
-
-// CHECK-LABEL: func.func @_QQsub_parallel() attributes {fir.bindc_name = "test"} {
-// CHECK: %[[ADDR:.*]] = fir.address_of(@_QFEa) : !fir.ref<!fir.array<10xf32>>
-// CHECK: %[[CAST:.*]] = builtin.unrealized_conversion_cast %[[ADDR]] : !fir.ref<!fir.array<10xf32>> to !llvm.ptr<array<10 x f32>>
-// CHECK: acc.parallel copyin(%[[CAST]] : !llvm.ptr<array<10 x f32>>) {
-// CHECK:   acc.loop
-
-// LLVMIR-LABEL: llvm.func @_QQsub_parallel() attributes {fir.bindc_name = "test"} {
-// LLVMIR: %[[ADDR:.*]] = llvm.mlir.addressof @_QFEa : !llvm.ptr<array<10 x f32>>
-// LLVMIR: acc.parallel copyin(%[[ADDR]] : !llvm.ptr<array<10 x f32>>) {
diff --git a/mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td b/mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td
--- a/mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td
+++ b/mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td
@@ -420,17 +420,6 @@
                        UnitAttr:$selfAttr,
                        OptionalAttr<OpenACC_ReductionOpAttr>:$reductionOp,
                        Variadic<AnyType>:$reductionOperands,
-                       Variadic<AnyType>:$copyOperands,
-                       Variadic<AnyType>:$copyinOperands,
-                       Variadic<AnyType>:$copyinReadonlyOperands,
-                       Variadic<AnyType>:$copyoutOperands,
-                       Variadic<AnyType>:$copyoutZeroOperands,
-                       Variadic<AnyType>:$createOperands,
-                       Variadic<AnyType>:$createZeroOperands,
-                       Variadic<AnyType>:$noCreateOperands,
-                       Variadic<AnyType>:$presentOperands,
-                       Variadic<AnyType>:$devicePtrOperands,
-                       Variadic<AnyType>:$attachOperands,
                        Variadic<AnyType>:$gangPrivateOperands,
                        Variadic<AnyType>:$gangFirstPrivateOperands,
                        Variadic<OpenACC_PointerLikeTypeInterface>:$dataClauseOperands,
@@ -449,26 +438,12 @@
   let assemblyFormat = [{
     oilist(
         `dataOperands` `(` $dataClauseOperands `:` type($dataClauseOperands) `)`
-      | `attach` `(` $attachOperands `:` type($attachOperands) `)`
       | `async` `(` $async `:` type($async) `)`
-      | `copy` `(` $copyOperands `:` type($copyOperands) `)`
-      | `copyin` `(` $copyinOperands `:` type($copyinOperands) `)`
-      | `copyin_readonly` `(` $copyinReadonlyOperands `:`
-          type($copyinReadonlyOperands) `)`
-      | `copyout` `(` $copyoutOperands `:` type($copyoutOperands) `)`
-      | `copyout_zero` `(` $copyoutZeroOperands `:`
-          type($copyoutZeroOperands) `)`
-      | `create` `(` $createOperands `:` type($createOperands) `)`
-      | `create_zero` `(` $createZeroOperands `:`
-          type($createZeroOperands) `)`
-      | `deviceptr` `(` $devicePtrOperands `:` type($devicePtrOperands) `)`
       | `firstprivate` `(` $gangFirstPrivateOperands `:`
             type($gangFirstPrivateOperands) `)`
-      | `no_create` `(` $noCreateOperands `:` type($noCreateOperands) `)`
       | `num_gangs` `(` $numGangs `:` type($numGangs) `)`
       | `num_workers` `(` $numWorkers `:` type($numWorkers) `)`
       | `private` `(` $gangPrivateOperands `:` type($gangPrivateOperands) `)`
-      | `present` `(` $presentOperands `:` type($presentOperands) `)`
       | `vector_length` `(` $vectorLength `:` type($vectorLength) `)`
       | `wait` `(` $waitOperands `:` type($waitOperands) `)`
       | `self` `(` $selfCond `)`
diff --git a/mlir/lib/Conversion/OpenACCToLLVM/OpenACCToLLVM.cpp b/mlir/lib/Conversion/OpenACCToLLVM/OpenACCToLLVM.cpp
--- a/mlir/lib/Conversion/OpenACCToLLVM/OpenACCToLLVM.cpp
+++ b/mlir/lib/Conversion/OpenACCToLLVM/OpenACCToLLVM.cpp
@@ -194,17 +194,6 @@
   target.addDynamicallyLegalOp<acc::ParallelOp>(
       [allDataOperandsAreConverted](acc::ParallelOp op) {
         return allDataOperandsAreConverted(op.getReductionOperands()) &&
-               allDataOperandsAreConverted(op.getCopyOperands()) &&
-               allDataOperandsAreConverted(op.getCopyinOperands()) &&
-               allDataOperandsAreConverted(op.getCopyinReadonlyOperands()) &&
-               allDataOperandsAreConverted(op.getCopyoutOperands()) &&
-               allDataOperandsAreConverted(op.getCopyoutZeroOperands()) &&
-               allDataOperandsAreConverted(op.getCreateOperands()) &&
-               allDataOperandsAreConverted(op.getCreateZeroOperands()) &&
-               allDataOperandsAreConverted(op.getNoCreateOperands()) &&
-               allDataOperandsAreConverted(op.getPresentOperands()) &&
-               allDataOperandsAreConverted(op.getDevicePtrOperands()) &&
-               allDataOperandsAreConverted(op.getAttachOperands()) &&
                allDataOperandsAreConverted(op.getGangPrivateOperands()) &&
                allDataOperandsAreConverted(op.getGangFirstPrivateOperands());
       });
diff --git a/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp b/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
--- a/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
+++ b/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
@@ -302,13 +302,7 @@
 }
 
 unsigned ParallelOp::getNumDataOperands() {
-  return getReductionOperands().size() + getCopyOperands().size() +
-         getCopyinOperands().size() + getCopyinReadonlyOperands().size() +
-         getCopyoutOperands().size() + getCopyoutZeroOperands().size() +
-         getCreateOperands().size() + getCreateZeroOperands().size() +
-         getNoCreateOperands().size() + getPresentOperands().size() +
-         getDevicePtrOperands().size() + getAttachOperands().size() +
-         getGangPrivateOperands().size() +
+  return getReductionOperands().size() + getGangPrivateOperands().size() +
          getGangFirstPrivateOperands().size() + getDataClauseOperands().size();
 }
 
diff --git a/mlir/test/Conversion/OpenACCToLLVM/convert-data-operands-to-llvmir.mlir b/mlir/test/Conversion/OpenACCToLLVM/convert-data-operands-to-llvmir.mlir
deleted file mode 100644
--- a/mlir/test/Conversion/OpenACCToLLVM/convert-data-operands-to-llvmir.mlir
+++ /dev/null
@@ -1,65 +0,0 @@
-// RUN: mlir-opt -convert-openacc-to-llvm='use-opaque-pointers=1' -split-input-file %s | FileCheck %s
-
-func.func @testparallelop(%a: memref<10xf32>, %b: memref<10xf32>) -> () {
-  acc.parallel copy(%b : memref<10xf32>) copyout(%a : memref<10xf32>) {
-  }
-  return
-}
-
-// CHECK: acc.parallel copy(%{{.*}}: !llvm.struct<"openacc_data", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>) copyout(%{{.*}}: !llvm.struct<"openacc_data.1", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>)
-
-// -----
-
-func.func @testparallelop(%a: !llvm.ptr, %b: memref<10xf32>, %c: !llvm.ptr) -> () {
-  acc.parallel copyin(%b : memref<10xf32>) deviceptr(%c: !llvm.ptr) attach(%a : !llvm.ptr) {
-  }
-  return
-}
-
-// CHECK: acc.parallel attach(%{{.*}}: !llvm.ptr) copyin(%{{.*}}: !llvm.struct<"openacc_data", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>) deviceptr(%{{.*}} : !llvm.ptr) 
-
-// -----
-
-func.func @testparallelop(%a: memref<10xf32>, %b: memref<10xf32>) -> () {
-  %ifCond = arith.constant true
-  acc.parallel if(%ifCond) copyin_readonly(%b : memref<10xf32>) copyout_zero(%a : memref<10xf32>) {
-  }
-  return
-}
-
-// CHECK: acc.parallel copyin_readonly(%{{.*}}: !llvm.struct<"openacc_data", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>) copyout_zero(%{{.*}}: !llvm.struct<"openacc_data.1", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>) if(%{{.*}})
-
-// -----
-
-func.func @testparallelop(%a: !llvm.ptr, %b: memref<10xf32>, %c: !llvm.ptr) -> () {
-  acc.parallel create(%b : memref<10xf32>) create_zero(%c: !llvm.ptr) no_create(%a : !llvm.ptr) {
-  }
-  return
-}
-
-// CHECK: acc.parallel create(%{{.*}}: !llvm.struct<"openacc_data", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>) create_zero(%{{.*}}: !llvm.ptr) no_create(%{{.*}}: !llvm.ptr)
-
-// -----
-
-func.func @testparallelop(%a: memref<10xf32>, %b: memref<10xf32>) -> () {
-  acc.parallel present(%a, %b : memref<10xf32>, memref<10xf32>) {
-  }
-  return
-}
-
-// CHECK: acc.parallel present(%{{.*}}, %{{.*}} : !llvm.struct<"openacc_data", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>, !llvm.struct<"openacc_data.1", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>)
-
-// -----
-
-func.func @testparallelop(%i: i64, %a: memref<10xf32>, %b: memref<10xf32>) -> () {
-  acc.parallel num_gangs(%i: i64) present(%a, %b : memref<10xf32>, memref<10xf32>) {
-    %0 = arith.constant 0 : i32
-    acc.yield
-  } attributes {async}
-  return
-}
-
-// CHECK: acc.parallel num_gangs(%{{.*}}: i64) present(%{{.*}}, %{{.*}} : !llvm.struct<"openacc_data", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>, !llvm.struct<"openacc_data.1", (struct<(ptr, ptr, i64, array<1 x i64>, array<1 x i64>)>, ptr, i64)>)
-// CHECK:   %c0_i32 = arith.constant 0 : i32
-// CHECK:   acc.yield
-// CHECK: } attributes {async}
diff --git a/mlir/test/Dialect/OpenACC/ops.mlir b/mlir/test/Dialect/OpenACC/ops.mlir
--- a/mlir/test/Dialect/OpenACC/ops.mlir
+++ b/mlir/test/Dialect/OpenACC/ops.mlir
@@ -394,20 +394,6 @@
   }
   acc.parallel vector_length(%idxValue: index) {
   }
-  acc.parallel copyin(%a, %b : memref<10xf32>, memref<10xf32>) {
-  }
-  acc.parallel copyin_readonly(%a, %b : memref<10xf32>, memref<10xf32>) {
-  }
-  acc.parallel copyin(%a: memref<10xf32>) copyout_zero(%b, %c : memref<10xf32>, memref<10x10xf32>) {
-  }
-  acc.parallel copyout(%b, %c : memref<10xf32>, memref<10x10xf32>) create(%a: memref<10xf32>) {
-  }
-  acc.parallel copyout_zero(%b, %c : memref<10xf32>, memref<10x10xf32>) create_zero(%a: memref<10xf32>) {
-  }
-  acc.parallel no_create(%a: memref<10xf32>) present(%b, %c : memref<10xf32>, memref<10x10xf32>) {
-  }
-  acc.parallel deviceptr(%a: memref<10xf32>) attach(%b, %c : memref<10xf32>, memref<10x10xf32>) {
-  }
   acc.parallel private(%a, %c : memref<10xf32>, memref<10x10xf32>) firstprivate(%b: memref<10xf32>) {
   }
   acc.parallel {
@@ -459,20 +445,6 @@
 // CHECK-NEXT: }
 // CHECK:      acc.parallel vector_length([[IDXVALUE]] : index) {
 // CHECK-NEXT: }
-// CHECK:      acc.parallel copyin([[ARGA]], [[ARGB]] : memref<10xf32>, memref<10xf32>) {
-// CHECK-NEXT: }
-// CHECK:      acc.parallel copyin_readonly([[ARGA]], [[ARGB]] : memref<10xf32>, memref<10xf32>) {
-// CHECK-NEXT: }
-// CHECK:      acc.parallel copyin([[ARGA]] : memref<10xf32>) copyout_zero([[ARGB]], [[ARGC]] : memref<10xf32>, memref<10x10xf32>) {
-// CHECK-NEXT: }
-// CHECK:      acc.parallel copyout([[ARGB]], [[ARGC]] : memref<10xf32>, memref<10x10xf32>) create([[ARGA]] : memref<10xf32>) {
-// CHECK-NEXT: }
-// CHECK:      acc.parallel copyout_zero([[ARGB]], [[ARGC]] : memref<10xf32>, memref<10x10xf32>) create_zero([[ARGA]] : memref<10xf32>) {
-// CHECK-NEXT: }
-// CHECK:      acc.parallel no_create([[ARGA]] : memref<10xf32>) present([[ARGB]], [[ARGC]] : memref<10xf32>, memref<10x10xf32>) {
-// CHECK-NEXT: }
-// CHECK:      acc.parallel attach([[ARGB]], [[ARGC]] : memref<10xf32>, memref<10x10xf32>) deviceptr([[ARGA]] : memref<10xf32>) {
-// CHECK-NEXT: }
 // CHECK:      acc.parallel firstprivate([[ARGB]] : memref<10xf32>) private([[ARGA]], [[ARGC]] : memref<10xf32>, memref<10x10xf32>) {
 // CHECK-NEXT: }
 // CHECK:      acc.parallel {