[Mlir-commits] [mlir] 30171e7 - [mlir] Switch segment size attributes to DenseI32ArrayAttr

Jeff Niu llvmlistbot at llvm.org
Thu Aug 11 17:56:53 PDT 2022


Author: Jeff Niu
Date: 2022-08-11T20:56:45-04:00
New Revision: 30171e76f0e5ea8037bc4d1450dd3e12af4d9938

URL: https://github.com/llvm/llvm-project/commit/30171e76f0e5ea8037bc4d1450dd3e12af4d9938
DIFF: https://github.com/llvm/llvm-project/commit/30171e76f0e5ea8037bc4d1450dd3e12af4d9938.diff

LOG: [mlir] Switch segment size attributes to DenseI32ArrayAttr

Switch variadic operand and result segment size attributes to use the
dense i32 array. Dense integer arrays were introduced primarily to
represent index lists. They are a better fit for segment sizes than
dense elements attrs.

Depends on D131738

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D131702

Added: 
    

Modified: 
    flang/include/flang/Optimizer/Dialect/FIROps.td
    flang/lib/Lower/OpenACC.cpp
    flang/lib/Optimizer/Dialect/FIROps.cpp
    flang/test/Fir/convert-to-llvm-openmp-and-fir.fir
    flang/test/Fir/convert-to-llvm.fir
    mlir/docs/PatternRewriter.md
    mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
    mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
    mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td
    mlir/include/mlir/Dialect/PDLInterp/IR/PDLInterpOps.td
    mlir/include/mlir/IR/ValueRange.h
    mlir/lib/Dialect/Async/IR/Async.cpp
    mlir/lib/Dialect/Bufferization/IR/BufferizationOps.cpp
    mlir/lib/Dialect/GPU/IR/GPUDialect.cpp
    mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
    mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
    mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
    mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
    mlir/lib/Dialect/SCF/IR/SCF.cpp
    mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
    mlir/lib/Dialect/Vector/IR/VectorOps.cpp
    mlir/lib/IR/Operation.cpp
    mlir/lib/IR/OperationSupport.cpp
    mlir/lib/Rewrite/ByteCode.cpp
    mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
    mlir/test/Conversion/OpenMPToLLVM/convert-to-llvmir.mlir
    mlir/test/Dialect/GPU/invalid.mlir
    mlir/test/Dialect/Linalg/named-ops.mlir
    mlir/test/Dialect/OpenMP/invalid.mlir
    mlir/test/Dialect/OpenMP/ops.mlir
    mlir/test/Dialect/PDL/invalid.mlir
    mlir/test/Dialect/PDLInterp/invalid.mlir
    mlir/test/Dialect/SCF/invalid.mlir
    mlir/test/Dialect/SPIRV/IR/control-flow-ops.mlir
    mlir/test/IR/parser.mlir
    mlir/test/IR/traits.mlir
    mlir/test/Rewrite/pdl-bytecode.mlir
    mlir/test/Target/LLVMIR/openmp-llvm.mlir
    mlir/test/Transforms/canonicalize-block-merge.mlir
    mlir/test/Transforms/sccp.mlir
    mlir/test/lib/Dialect/Test/TestOps.td
    mlir/test/python/dialects/linalg/ops.py
    mlir/test/python/dialects/ods_helpers.py
    mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
    mlir/tools/mlir-tblgen/OpFormatGen.cpp

Removed: 
    


################################################################################
diff  --git a/flang/include/flang/Optimizer/Dialect/FIROps.td b/flang/include/flang/Optimizer/Dialect/FIROps.td
index e7d8fa4fa214a..ff0642bf136ab 100644
--- a/flang/include/flang/Optimizer/Dialect/FIROps.td
+++ b/flang/include/flang/Optimizer/Dialect/FIROps.td
@@ -417,7 +417,7 @@ def fir_UndefOp : fir_OneResultOp<"undefined", [NoSideEffect]> {
   let results = (outs AnyType:$intype);
 
   let assemblyFormat = "type($intype) attr-dict";
-  
+
   // Note: we allow `undef : ref<T>` since it is a possible from transformations.
   let hasVerifier = 0;
 }
@@ -538,9 +538,9 @@ class fir_IntegralSwitchTerminatorOp<string mnemonic,
         }
       }
       $_state.addAttribute(getOperandSegmentSizeAttr(),
-        $_builder.getI32VectorAttr({1, 0, sumArgs}));
+        $_builder.getDenseI32ArrayAttr({1, 0, sumArgs}));
       $_state.addAttribute(getTargetOffsetAttr(),
-        $_builder.getI32VectorAttr(argOffs));
+        $_builder.getDenseI32ArrayAttr(argOffs));
       $_state.addAttributes(attributes);
     }]
   >];

diff  --git a/flang/lib/Lower/OpenACC.cpp b/flang/lib/Lower/OpenACC.cpp
index 2259060b0aae2..4b55c8ba6c00d 100644
--- a/flang/lib/Lower/OpenACC.cpp
+++ b/flang/lib/Lower/OpenACC.cpp
@@ -113,7 +113,7 @@ createRegionOp(fir::FirOpBuilder &builder, mlir::Location loc,
   builder.create<Terminator>(loc);
 
   op->setAttr(Op::getOperandSegmentSizeAttr(),
-              builder.getI32VectorAttr(operandSegments));
+              builder.getDenseI32ArrayAttr(operandSegments));
 
   // Place the insertion point to the start of the first block.
   builder.setInsertionPointToStart(&block);
@@ -129,7 +129,7 @@ createSimpleOp(fir::FirOpBuilder &builder, mlir::Location loc,
   llvm::ArrayRef<mlir::Type> argTy;
   Op op = builder.create<Op>(loc, argTy, operands);
   op->setAttr(Op::getOperandSegmentSizeAttr(),
-              builder.getI32VectorAttr(operandSegments));
+              builder.getDenseI32ArrayAttr(operandSegments));
   return op;
 }
 

diff  --git a/flang/lib/Optimizer/Dialect/FIROps.cpp b/flang/lib/Optimizer/Dialect/FIROps.cpp
index 6db08c93352ab..1c1e1a6e9c7f5 100644
--- a/flang/lib/Optimizer/Dialect/FIROps.cpp
+++ b/flang/lib/Optimizer/Dialect/FIROps.cpp
@@ -126,8 +126,9 @@ static mlir::ParseResult parseAllocatableOp(FN wrapResultType,
     parser.emitError(parser.getNameLoc(), "invalid allocate type: ") << intype;
     return mlir::failure();
   }
-  result.addAttribute("operand_segment_sizes",
-                      builder.getI32VectorAttr({typeparamsSize, shapeSize}));
+  result.addAttribute(
+      "operand_segment_sizes",
+      builder.getDenseI32ArrayAttr({typeparamsSize, shapeSize}));
   if (parser.parseOptionalAttrDict(result.attributes) ||
       parser.addTypeToList(restype, result.types))
     return mlir::failure();
@@ -2431,8 +2432,8 @@ static mlir::ParseResult parseIntegralSwitchTerminator(
     sumArgs += argSize;
   }
   result.addAttribute(operandSegmentAttr,
-                      bld.getI32VectorAttr({1, 0, sumArgs}));
-  result.addAttribute(getTargetOffsetAttr(), bld.getI32VectorAttr(argOffs));
+                      bld.getDenseI32ArrayAttr({1, 0, sumArgs}));
+  result.addAttribute(getTargetOffsetAttr(), bld.getDenseI32ArrayAttr(argOffs));
   return mlir::success();
 }
 
@@ -2480,13 +2481,12 @@ void fir::SelectOp::print(mlir::OpAsmPrinter &p) {
 }
 
 template <typename A, typename... AdditionalArgs>
-static A getSubOperands(unsigned pos, A allArgs,
-                        mlir::DenseIntElementsAttr ranges,
+static A getSubOperands(unsigned pos, A allArgs, mlir::DenseI32ArrayAttr ranges,
                         AdditionalArgs &&...additionalArgs) {
   unsigned start = 0;
   for (unsigned i = 0; i < pos; ++i)
-    start += (*(ranges.begin() + i)).getZExtValue();
-  return allArgs.slice(start, (*(ranges.begin() + pos)).getZExtValue(),
+    start += ranges[i];
+  return allArgs.slice(start, ranges[pos],
                        std::forward<AdditionalArgs>(additionalArgs)...);
 }
 
@@ -2498,14 +2498,10 @@ getMutableSuccessorOperands(unsigned pos, mlir::MutableOperandRange operands,
       *owner->getAttrDictionary().getNamed(offsetAttr);
   return getSubOperands(
       pos, operands,
-      targetOffsetAttr.getValue().cast<mlir::DenseIntElementsAttr>(),
+      targetOffsetAttr.getValue().cast<mlir::DenseI32ArrayAttr>(),
       mlir::MutableOperandRange::OperandSegment(pos, targetOffsetAttr));
 }
 
-static unsigned denseElementsSize(mlir::DenseIntElementsAttr attr) {
-  return attr.getNumElements();
-}
-
 llvm::Optional<mlir::OperandRange> fir::SelectOp::getCompareOperands(unsigned) {
   return {};
 }
@@ -2524,8 +2520,8 @@ llvm::Optional<llvm::ArrayRef<mlir::Value>>
 fir::SelectOp::getSuccessorOperands(llvm::ArrayRef<mlir::Value> operands,
                                     unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
@@ -2533,15 +2529,16 @@ fir::SelectOp::getSuccessorOperands(llvm::ArrayRef<mlir::Value> operands,
 llvm::Optional<mlir::ValueRange>
 fir::SelectOp::getSuccessorOperands(mlir::ValueRange operands, unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
 
 unsigned fir::SelectOp::targetOffsetSize() {
-  return denseElementsSize((*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getTargetOffsetAttr()));
+  return (*this)
+      ->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr())
+      .size();
 }
 
 //===----------------------------------------------------------------------===//
@@ -2550,17 +2547,17 @@ unsigned fir::SelectOp::targetOffsetSize() {
 
 llvm::Optional<mlir::OperandRange>
 fir::SelectCaseOp::getCompareOperands(unsigned cond) {
-  auto a = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getCompareOffsetAttr());
+  auto a =
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getCompareOffsetAttr());
   return {getSubOperands(cond, getCompareArgs(), a)};
 }
 
 llvm::Optional<llvm::ArrayRef<mlir::Value>>
 fir::SelectCaseOp::getCompareOperands(llvm::ArrayRef<mlir::Value> operands,
                                       unsigned cond) {
-  auto a = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getCompareOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+  auto a =
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getCompareOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(cond, getSubOperands(1, operands, segments), a)};
 }
@@ -2568,9 +2565,9 @@ fir::SelectCaseOp::getCompareOperands(llvm::ArrayRef<mlir::Value> operands,
 llvm::Optional<mlir::ValueRange>
 fir::SelectCaseOp::getCompareOperands(mlir::ValueRange operands,
                                       unsigned cond) {
-  auto a = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getCompareOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+  auto a =
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getCompareOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(cond, getSubOperands(1, operands, segments), a)};
 }
@@ -2584,8 +2581,8 @@ llvm::Optional<llvm::ArrayRef<mlir::Value>>
 fir::SelectCaseOp::getSuccessorOperands(llvm::ArrayRef<mlir::Value> operands,
                                         unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
@@ -2594,8 +2591,8 @@ llvm::Optional<mlir::ValueRange>
 fir::SelectCaseOp::getSuccessorOperands(mlir::ValueRange operands,
                                         unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
@@ -2668,9 +2665,11 @@ mlir::ParseResult fir::SelectCaseOp::parse(mlir::OpAsmParser &parser,
   }
   auto &bld = parser.getBuilder();
   result.addAttribute(fir::SelectCaseOp::getOperandSegmentSizeAttr(),
-                      bld.getI32VectorAttr({1, offSize, toffSize}));
-  result.addAttribute(getCompareOffsetAttr(), bld.getI32VectorAttr(argOffs));
-  result.addAttribute(getTargetOffsetAttr(), bld.getI32VectorAttr(targOffs));
+                      bld.getDenseI32ArrayAttr({1, offSize, toffSize}));
+  result.addAttribute(getCompareOffsetAttr(),
+                      bld.getDenseI32ArrayAttr(argOffs));
+  result.addAttribute(getTargetOffsetAttr(),
+                      bld.getDenseI32ArrayAttr(targOffs));
   return mlir::success();
 }
 
@@ -2703,13 +2702,15 @@ void fir::SelectCaseOp::print(mlir::OpAsmPrinter &p) {
 }
 
 unsigned fir::SelectCaseOp::compareOffsetSize() {
-  return denseElementsSize((*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getCompareOffsetAttr()));
+  return (*this)
+      ->getAttrOfType<mlir::DenseI32ArrayAttr>(getCompareOffsetAttr())
+      .size();
 }
 
 unsigned fir::SelectCaseOp::targetOffsetSize() {
-  return denseElementsSize((*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getTargetOffsetAttr()));
+  return (*this)
+      ->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr())
+      .size();
 }
 
 void fir::SelectCaseOp::build(mlir::OpBuilder &builder,
@@ -2738,7 +2739,7 @@ void fir::SelectCaseOp::build(mlir::OpBuilder &builder,
   for (auto ops : cmpOperands)
     result.addOperands(ops);
   result.addAttribute(getCompareOffsetAttr(),
-                      builder.getI32VectorAttr(operOffs));
+                      builder.getDenseI32ArrayAttr(operOffs));
   const auto count = destinations.size();
   for (auto d : destinations)
     result.addSuccessors(d);
@@ -2756,8 +2757,9 @@ void fir::SelectCaseOp::build(mlir::OpBuilder &builder,
     }
   }
   result.addAttribute(getOperandSegmentSizeAttr(),
-                      builder.getI32VectorAttr({1, operSize, sumArgs}));
-  result.addAttribute(getTargetOffsetAttr(), builder.getI32VectorAttr(argOffs));
+                      builder.getDenseI32ArrayAttr({1, operSize, sumArgs}));
+  result.addAttribute(getTargetOffsetAttr(),
+                      builder.getDenseI32ArrayAttr(argOffs));
   result.addAttributes(attributes);
 }
 
@@ -2854,8 +2856,8 @@ llvm::Optional<llvm::ArrayRef<mlir::Value>>
 fir::SelectRankOp::getSuccessorOperands(llvm::ArrayRef<mlir::Value> operands,
                                         unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
@@ -2864,15 +2866,16 @@ llvm::Optional<mlir::ValueRange>
 fir::SelectRankOp::getSuccessorOperands(mlir::ValueRange operands,
                                         unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
 
 unsigned fir::SelectRankOp::targetOffsetSize() {
-  return denseElementsSize((*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getTargetOffsetAttr()));
+  return (*this)
+      ->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr())
+      .size();
 }
 
 //===----------------------------------------------------------------------===//
@@ -2898,8 +2901,8 @@ llvm::Optional<llvm::ArrayRef<mlir::Value>>
 fir::SelectTypeOp::getSuccessorOperands(llvm::ArrayRef<mlir::Value> operands,
                                         unsigned oper) {
   auto a =
-      (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(getTargetOffsetAttr());
-  auto segments = (*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
+      (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr());
+  auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
       getOperandSegmentSizeAttr());
   return {getSubOperands(oper, getSubOperands(2, operands, segments), a)};
 }
@@ -2944,14 +2947,15 @@ mlir::ParseResult fir::SelectTypeOp::parse(mlir::OpAsmParser &parser,
     offSize += argSize;
   }
   result.addAttribute(fir::SelectTypeOp::getOperandSegmentSizeAttr(),
-                      bld.getI32VectorAttr({1, 0, offSize}));
-  result.addAttribute(getTargetOffsetAttr(), bld.getI32VectorAttr(argOffs));
+                      bld.getDenseI32ArrayAttr({1, 0, offSize}));
+  result.addAttribute(getTargetOffsetAttr(), bld.getDenseI32ArrayAttr(argOffs));
   return mlir::success();
 }
 
 unsigned fir::SelectTypeOp::targetOffsetSize() {
-  return denseElementsSize((*this)->getAttrOfType<mlir::DenseIntElementsAttr>(
-      getTargetOffsetAttr()));
+  return (*this)
+      ->getAttrOfType<mlir::DenseI32ArrayAttr>(getTargetOffsetAttr())
+      .size();
 }
 
 void fir::SelectTypeOp::print(mlir::OpAsmPrinter &p) {
@@ -3021,8 +3025,9 @@ void fir::SelectTypeOp::build(mlir::OpBuilder &builder,
     }
   }
   result.addAttribute(getOperandSegmentSizeAttr(),
-                      builder.getI32VectorAttr({1, 0, sumArgs}));
-  result.addAttribute(getTargetOffsetAttr(), builder.getI32VectorAttr(argOffs));
+                      builder.getDenseI32ArrayAttr({1, 0, sumArgs}));
+  result.addAttribute(getTargetOffsetAttr(),
+                      builder.getDenseI32ArrayAttr(argOffs));
   result.addAttributes(attributes);
 }
 

diff  --git a/flang/test/Fir/convert-to-llvm-openmp-and-fir.fir b/flang/test/Fir/convert-to-llvm-openmp-and-fir.fir
index c600878d0c56a..d40e69d22a2bb 100644
--- a/flang/test/Fir/convert-to-llvm-openmp-and-fir.fir
+++ b/flang/test/Fir/convert-to-llvm-openmp-and-fir.fir
@@ -28,7 +28,7 @@ func.func @_QPsb1(%arg0: !fir.ref<i32> {fir.bindc_name = "n"}, %arg1: !fir.ref<!
 // CHECK:    %[[ONE_2:.*]] = llvm.mlir.constant(1 : i32) : i32
 // CHECK: omp.parallel   {
 // CHECK:      %[[ONE_3:.*]] = llvm.mlir.constant(1 : i64) : i64
-// CHECK:      %[[I_VAR:.*]] = llvm.alloca %[[ONE_3]] x i32 {adapt.valuebyref, in_type = i32, operand_segment_sizes = dense<0> : vector<2xi32>, pinned} : (i64) -> !llvm.ptr<i32>
+// CHECK:      %[[I_VAR:.*]] = llvm.alloca %[[ONE_3]] x i32 {adapt.valuebyref, in_type = i32, operand_segment_sizes = array<i32: 0, 0>, pinned} : (i64) -> !llvm.ptr<i32>
 // CHECK:      %[[N:.*]] = llvm.load %[[N_REF]] : !llvm.ptr<i32>
 // CHECK: omp.wsloop nowait
 // CHECK-SAME: for (%[[I:.*]]) : i32 = (%[[ONE_2]]) to (%[[N]]) inclusive step (%[[ONE_2]]) {
@@ -201,7 +201,7 @@ func.func @_QPsimd1(%arg0: !fir.ref<i32> {fir.bindc_name = "n"}, %arg1: !fir.ref
 // CHECK:    %[[ONE_2:.*]] = llvm.mlir.constant(1 : i32) : i32
 // CHECK: omp.parallel   {
 // CHECK:      %[[ONE_3:.*]] = llvm.mlir.constant(1 : i64) : i64
-// CHECK:      %[[I_VAR:.*]] = llvm.alloca %[[ONE_3]] x i32 {adapt.valuebyref, in_type = i32, operand_segment_sizes = dense<0> : vector<2xi32>, pinned} : (i64) -> !llvm.ptr<i32>
+// CHECK:      %[[I_VAR:.*]] = llvm.alloca %[[ONE_3]] x i32 {adapt.valuebyref, in_type = i32, operand_segment_sizes = array<i32: 0, 0>, pinned} : (i64) -> !llvm.ptr<i32>
 // CHECK:      %[[N:.*]] = llvm.load %[[N_REF]] : !llvm.ptr<i32>
 // CHECK: omp.simdloop
 // CHECK-SAME: (%[[I:.*]]) : i32 = (%[[ONE_2]]) to (%[[N]]) step (%[[ONE_2]]) {

diff  --git a/flang/test/Fir/convert-to-llvm.fir b/flang/test/Fir/convert-to-llvm.fir
index 388f465d5c2d9..2bd27ee121543 100644
--- a/flang/test/Fir/convert-to-llvm.fir
+++ b/flang/test/Fir/convert-to-llvm.fir
@@ -1701,7 +1701,7 @@ func.func @no_reassoc(%arg0: !fir.ref<i32>) {
 // CHECK-LABEL: llvm.func @no_reassoc(
 // CHECK-SAME:                        %[[ARG0:.*]]: !llvm.ptr<i32>) {
 // CHECK:         %[[C1:.*]] = llvm.mlir.constant(1 : i64) : i64
-// CHECK:         %[[ALLOC:.*]] = llvm.alloca %[[C1]] x i32 {in_type = i32, operand_segment_sizes = dense<0> : vector<2xi32>} : (i64) -> !llvm.ptr<i32>
+// CHECK:         %[[ALLOC:.*]] = llvm.alloca %[[C1]] x i32 {in_type = i32, operand_segment_sizes = array<i32: 0, 0>} : (i64) -> !llvm.ptr<i32>
 // CHECK:         %[[LOAD:.*]] = llvm.load %[[ARG0]] : !llvm.ptr<i32>
 // CHECK:         llvm.store %[[LOAD]], %[[ALLOC]] : !llvm.ptr<i32>
 // CHECK:         llvm.return
@@ -1821,7 +1821,7 @@ func.func private @_QPxb(!fir.box<!fir.array<?x?xf64>>)
 // CHECK:         %[[C1_0:.*]] = llvm.mlir.constant(1 : i64) : i64
 // CHECK:         %[[ARR_SIZE_TMP1:.*]] = llvm.mul %[[C1_0]], %[[N1]]  : i64
 // CHECK:         %[[ARR_SIZE:.*]] = llvm.mul %[[ARR_SIZE_TMP1]], %[[N2]]  : i64
-// CHECK:         %[[ARR:.*]] = llvm.alloca %[[ARR_SIZE]] x f64 {bindc_name = "arr", in_type = !fir.array<?x?xf64>, operand_segment_sizes = dense<[0, 2]> : vector<2xi32>, uniq_name = "_QFsbEarr"} : (i64) -> !llvm.ptr<f64>
+// CHECK:         %[[ARR:.*]] = llvm.alloca %[[ARR_SIZE]] x f64 {bindc_name = "arr", in_type = !fir.array<?x?xf64>, operand_segment_sizes = array<i32: 0, 2>, uniq_name = "_QFsbEarr"} : (i64) -> !llvm.ptr<f64>
 // CHECK:         %[[BOX0:.*]] = llvm.mlir.undef : !llvm.struct<(ptr<f64>, i{{.*}}, i{{.*}}, i{{.*}}, i{{.*}}, i{{.*}}, i{{.*}}, array<2 x array<3 x i64>>)>
 // CHECK:         %[[ELEM_LEN:.*]] = llvm.mlir.constant(8 : i32) : i32
 // CHECK:         %[[TYPE_CODE:.*]] = llvm.mlir.constant(28 : i32) : i32
@@ -1898,9 +1898,9 @@ func.func private @_QPtest_dt_callee(%arg0: !fir.box<!fir.array<?xi32>>)
 // CHECK:         %[[C10:.*]] = llvm.mlir.constant(10 : i64) : i64
 // CHECK:         %[[C2:.*]] = llvm.mlir.constant(2 : i64) : i64
 // CHECK:         %[[ALLOCA_SIZE_V:.*]] = llvm.mlir.constant(1 : i64) : i64
-// CHECK:         %[[V:.*]] = llvm.alloca %[[ALLOCA_SIZE_V]] x i32 {bindc_name = "v", in_type = i32, operand_segment_sizes = dense<0> : vector<2xi32>, uniq_name = "_QFtest_dt_sliceEv"} : (i64) -> !llvm.ptr<i32>
+// CHECK:         %[[V:.*]] = llvm.alloca %[[ALLOCA_SIZE_V]] x i32 {bindc_name = "v", in_type = i32, operand_segment_sizes = array<i32: 0, 0>, uniq_name = "_QFtest_dt_sliceEv"} : (i64) -> !llvm.ptr<i32>
 // CHECK:         %[[ALLOCA_SIZE_X:.*]] = llvm.mlir.constant(1 : i64) : i64
-// CHECK:         %[[X:.*]] = llvm.alloca %[[ALLOCA_SIZE_X]] x !llvm.array<20 x struct<"_QFtest_dt_sliceTt", (i32, i32)>> {bindc_name = "x", in_type = !fir.array<20x!fir.type<_QFtest_dt_sliceTt{i:i32,j:i32}>>, operand_segment_sizes = dense<0> : vector<2xi32>, uniq_name = "_QFtest_dt_sliceEx"} : (i64) -> !llvm.ptr<array<20 x struct<"_QFtest_dt_sliceTt", (i32, i32)>>>
+// CHECK:         %[[X:.*]] = llvm.alloca %[[ALLOCA_SIZE_X]] x !llvm.array<20 x struct<"_QFtest_dt_sliceTt", (i32, i32)>> {bindc_name = "x", in_type = !fir.array<20x!fir.type<_QFtest_dt_sliceTt{i:i32,j:i32}>>, operand_segment_sizes = array<i32: 0, 0>, uniq_name = "_QFtest_dt_sliceEx"} : (i64) -> !llvm.ptr<array<20 x struct<"_QFtest_dt_sliceTt", (i32, i32)>>>
 // CHECK:         %[[BOX0:.*]] = llvm.mlir.undef : !llvm.struct<(ptr<i32>, i{{.*}}, i{{.*}}, i{{.*}}, i{{.*}}, i{{.*}}, i{{.*}}, array<1 x array<3 x i64>>)>
 // CHECK:         %[[ELEM_LEN:.*]] = llvm.mlir.constant(4 : i32) : i32
 // CHECK:         %[[TYPE_CODE:.*]] = llvm.mlir.constant(9 : i32) : i32

diff  --git a/mlir/docs/PatternRewriter.md b/mlir/docs/PatternRewriter.md
index d221ce96eab96..3ae6547308b98 100644
--- a/mlir/docs/PatternRewriter.md
+++ b/mlir/docs/PatternRewriter.md
@@ -357,7 +357,7 @@ Example output is shown below:
 ```
 //===-------------------------------------------===//
 Processing operation : 'cf.cond_br'(0x60f000001120) {
-  "cf.cond_br"(%arg0)[^bb2, ^bb2] {operand_segment_sizes = dense<[1, 0, 0]> : vector<3xi32>} : (i1) -> ()
+  "cf.cond_br"(%arg0)[^bb2, ^bb2] {operand_segment_sizes = array<i32: 1, 0, 0>} : (i1) -> ()
 
   * Pattern SimplifyConstCondBranchPred : 'cf.cond_br -> ()' {
   } -> failure : pattern failed to match

diff  --git a/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td b/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
index 94c53239d12eb..baba706061495 100644
--- a/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
+++ b/mlir/include/mlir/Dialect/ControlFlow/IR/ControlFlowOps.td
@@ -254,7 +254,7 @@ def SwitchOp : CF_Op<"switch",
     Variadic<AnyType>:$defaultOperands,
     VariadicOfVariadic<AnyType, "case_operand_segments">:$caseOperands,
     OptionalAttr<AnyIntElementsAttr>:$case_values,
-    I32ElementsAttr:$case_operand_segments
+    DenseI32ArrayAttr:$case_operand_segments
   );
   let successors = (successor
     AnySuccessor:$defaultDestination,

diff  --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
index 84fc59243dc4f..b9b0256757db6 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
@@ -915,7 +915,7 @@ def LLVM_SwitchOp : LLVM_TerminatorOp<"switch",
     Variadic<AnyType>:$defaultOperands,
     VariadicOfVariadic<AnyType, "case_operand_segments">:$caseOperands,
     OptionalAttr<ElementsAttr>:$case_values,
-    ElementsAttr:$case_operand_segments,
+    DenseI32ArrayAttr:$case_operand_segments,
     OptionalAttr<ElementsAttr>:$branch_weights
   );
   let successors = (successor

diff  --git a/mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td b/mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td
index cd1b87d65108d..d397d2911c184 100644
--- a/mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td
+++ b/mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td
@@ -86,7 +86,7 @@ class AllocLikeOp<string mnemonic,
       $_state.addOperands(dynamicSizes);
       $_state.addOperands(symbolOperands);
       $_state.addAttribute(getOperandSegmentSizeAttr(),
-          $_builder.getI32VectorAttr({
+          $_builder.getDenseI32ArrayAttr({
               static_cast<int32_t>(dynamicSizes.size()),
               static_cast<int32_t>(symbolOperands.size())}));
       if (alignment)

diff  --git a/mlir/include/mlir/Dialect/PDLInterp/IR/PDLInterpOps.td b/mlir/include/mlir/Dialect/PDLInterp/IR/PDLInterpOps.td
index 44dc6cdf12219..6d328926e027e 100644
--- a/mlir/include/mlir/Dialect/PDLInterp/IR/PDLInterpOps.td
+++ b/mlir/include/mlir/Dialect/PDLInterp/IR/PDLInterpOps.td
@@ -417,7 +417,7 @@ def PDLInterp_CreateOperationOp
     ```mlir
     // Create an instance of a `foo.op` operation.
     %op = pdl_interp.create_operation "foo.op"(%arg0 : !pdl.value) {"attrA" = %attr0} -> (%type : !pdl.type)
-    
+
     // Create an instance of a `foo.op` operation that has inferred result types
     // (using the InferTypeOpInterface).
     %op = pdl_interp.create_operation "foo.op"(%arg0 : !pdl.value) {"attrA" = %attr0} -> <inferred>

diff  --git a/mlir/include/mlir/IR/ValueRange.h b/mlir/include/mlir/IR/ValueRange.h
index 6fb35eae12762..64b816fae6e38 100644
--- a/mlir/include/mlir/IR/ValueRange.h
+++ b/mlir/include/mlir/IR/ValueRange.h
@@ -13,6 +13,7 @@
 #ifndef MLIR_IR_VALUERANGE_H
 #define MLIR_IR_VALUERANGE_H
 
+#include "mlir/IR/BuiltinAttributes.h"
 #include "mlir/IR/Types.h"
 #include "mlir/IR/Value.h"
 #include "llvm/ADT/PointerUnion.h"
@@ -22,7 +23,6 @@ namespace mlir {
 class ValueRange;
 template <typename ValueRangeT>
 class ValueTypeRange;
-class ElementsAttr;
 class TypeRangeRange;
 template <typename ValueIteratorT>
 class ValueTypeIterator;
@@ -54,7 +54,7 @@ class OperandRange final : public llvm::detail::indexed_accessor_range_base<
 
   /// Split this range into a set of contiguous subranges using the given
   /// elements attribute, which contains the sizes of the sub ranges.
-  OperandRangeRange split(ElementsAttr segmentSizes) const;
+  OperandRangeRange split(DenseI32ArrayAttr segmentSizes) const;
 
 private:
   /// See `llvm::detail::indexed_accessor_range_base` for details.
@@ -114,8 +114,8 @@ class OperandRangeRange final
 class MutableOperandRange {
 public:
   /// A pair of a named attribute corresponding to an operand segment attribute,
-  /// and the index within that attribute. The attribute should correspond to an
-  /// i32 DenseElementsAttr.
+  /// and the index within that attribute. The attribute should correspond to a
+  /// dense i32 array attr.
   using OperandSegment = std::pair<unsigned, NamedAttribute>;
 
   /// Construct a new mutable range from the given operand, operand start index,

diff  --git a/mlir/lib/Dialect/Async/IR/Async.cpp b/mlir/lib/Dialect/Async/IR/Async.cpp
index 7331e5f446ced..8a68e0d77a7ff 100644
--- a/mlir/lib/Dialect/Async/IR/Async.cpp
+++ b/mlir/lib/Dialect/Async/IR/Async.cpp
@@ -97,9 +97,8 @@ void ExecuteOp::build(OpBuilder &builder, OperationState &result,
   // Add derived `operand_segment_sizes` attribute based on parsed operands.
   int32_t numDependencies = dependencies.size();
   int32_t numOperands = operands.size();
-  auto operandSegmentSizes = DenseIntElementsAttr::get(
-      VectorType::get({2}, builder.getIntegerType(32)),
-      {numDependencies, numOperands});
+  auto operandSegmentSizes =
+      builder.getDenseI32ArrayAttr({numDependencies, numOperands});
   result.addAttribute(kOperandSegmentSizesAttr, operandSegmentSizes);
 
   // First result is always a token, and then `resultTypes` wrapped into
@@ -203,9 +202,8 @@ ParseResult ExecuteOp::parse(OpAsmParser &parser, OperationState &result) {
   int32_t numOperands = valueArgs.size();
 
   // Add derived `operand_segment_sizes` attribute based on parsed operands.
-  auto operandSegmentSizes = DenseIntElementsAttr::get(
-      VectorType::get({2}, parser.getBuilder().getI32Type()),
-      {numDependencies, numOperands});
+  auto operandSegmentSizes =
+      parser.getBuilder().getDenseI32ArrayAttr({numDependencies, numOperands});
   result.addAttribute(kOperandSegmentSizesAttr, operandSegmentSizes);
 
   // Parse the types of results returned from the async execute op.

diff  --git a/mlir/lib/Dialect/Bufferization/IR/BufferizationOps.cpp b/mlir/lib/Dialect/Bufferization/IR/BufferizationOps.cpp
index c4bad4393d061..9ca51f8beadd6 100644
--- a/mlir/lib/Dialect/Bufferization/IR/BufferizationOps.cpp
+++ b/mlir/lib/Dialect/Bufferization/IR/BufferizationOps.cpp
@@ -388,7 +388,7 @@ ParseResult AllocTensorOp::parse(OpAsmParser &parser, OperationState &result) {
     if (parser.resolveOperand(copyOperand, type, result.operands))
       return failure();
   result.addAttribute(AllocTensorOp::getOperandSegmentSizeAttr(),
-                      parser.getBuilder().getI32VectorAttr(
+                      parser.getBuilder().getDenseI32ArrayAttr(
                           {static_cast<int32_t>(dynamicSizesOperands.size()),
                            static_cast<int32_t>(copyKeyword.succeeded())}));
   return success();

diff  --git a/mlir/lib/Dialect/GPU/IR/GPUDialect.cpp b/mlir/lib/Dialect/GPU/IR/GPUDialect.cpp
index d102dbe1a37ea..d564f53521131 100644
--- a/mlir/lib/Dialect/GPU/IR/GPUDialect.cpp
+++ b/mlir/lib/Dialect/GPU/IR/GPUDialect.cpp
@@ -374,15 +374,15 @@ void gpu::addAsyncDependency(Operation *op, Value token) {
     return;
   auto attrName =
       OpTrait::AttrSizedOperandSegments<void>::getOperandSegmentSizeAttr();
-  auto sizeAttr = op->template getAttrOfType<DenseIntElementsAttr>(attrName);
+  auto sizeAttr = op->template getAttrOfType<DenseI32ArrayAttr>(attrName);
 
   // Async dependencies is the only variadic operand.
   if (!sizeAttr)
     return;
 
-  SmallVector<int32_t, 8> sizes(sizeAttr.getValues<int32_t>());
+  SmallVector<int32_t, 8> sizes(sizeAttr.asArrayRef());
   ++sizes.front();
-  op->setAttr(attrName, Builder(op->getContext()).getI32VectorAttr(sizes));
+  op->setAttr(attrName, Builder(op->getContext()).getDenseI32ArrayAttr(sizes));
 }
 
 //===----------------------------------------------------------------------===//
@@ -416,7 +416,7 @@ void LaunchOp::build(OpBuilder &builder, OperationState &result,
   segmentSizes.front() = asyncDependencies.size();
   segmentSizes.back() = dynamicSharedMemorySize ? 1 : 0;
   result.addAttribute(getOperandSegmentSizeAttr(),
-                      builder.getI32VectorAttr(segmentSizes));
+                      builder.getDenseI32ArrayAttr(segmentSizes));
 }
 
 KernelDim3 LaunchOp::getBlockIds() {
@@ -636,7 +636,7 @@ ParseResult LaunchOp::parse(OpAsmParser &parser, OperationState &result) {
   segmentSizes.front() = asyncDependencies.size();
   segmentSizes.back() = hasDynamicSharedMemorySize ? 1 : 0;
   result.addAttribute(LaunchOp::getOperandSegmentSizeAttr(),
-                      parser.getBuilder().getI32VectorAttr(segmentSizes));
+                      parser.getBuilder().getDenseI32ArrayAttr(segmentSizes));
   return success();
 }
 
@@ -709,7 +709,7 @@ void LaunchFuncOp::build(OpBuilder &builder, OperationState &result,
   segmentSizes[segmentSizes.size() - 2] = dynamicSharedMemorySize ? 1 : 0;
   segmentSizes.back() = static_cast<int32_t>(kernelOperands.size());
   result.addAttribute(getOperandSegmentSizeAttr(),
-                      builder.getI32VectorAttr(segmentSizes));
+                      builder.getDenseI32ArrayAttr(segmentSizes));
 }
 
 StringAttr LaunchFuncOp::getKernelModuleName() {

diff  --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
index 7c4f1a4c827f4..a92cfbd46fc57 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -1048,11 +1048,11 @@ ParseResult InvokeOp::parse(OpAsmParser &parser, OperationState &result) {
   result.addOperands(normalOperands);
   result.addOperands(unwindOperands);
 
-  result.addAttribute(
-      InvokeOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({static_cast<int32_t>(operands.size()),
-                                static_cast<int32_t>(normalOperands.size()),
-                                static_cast<int32_t>(unwindOperands.size())}));
+  result.addAttribute(InvokeOp::getOperandSegmentSizeAttr(),
+                      builder.getDenseI32ArrayAttr(
+                          {static_cast<int32_t>(operands.size()),
+                           static_cast<int32_t>(normalOperands.size()),
+                           static_cast<int32_t>(unwindOperands.size())}));
   return success();
 }
 

diff  --git a/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
index b28ef1451bde1..1b1e0e74e24b6 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
@@ -233,9 +233,9 @@ void MmaOp::build(OpBuilder &builder, OperationState &result, Type resultType,
   result.addTypes(resultType);
   result.addAttribute(
       MmaOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({static_cast<int32_t>(operandA.size()),
-                                static_cast<int32_t>(operandB.size()),
-                                static_cast<int32_t>(operandC.size())}));
+      builder.getDenseI32ArrayAttr({static_cast<int32_t>(operandA.size()),
+                                    static_cast<int32_t>(operandB.size()),
+                                    static_cast<int32_t>(operandC.size())}));
 }
 
 // <operation> :=
@@ -326,7 +326,7 @@ ParseResult MmaOp::parse(OpAsmParser &parser, OperationState &result) {
   if (!namedAttributes.empty())
     result.addAttributes(namedAttributes);
   result.addAttribute(MmaOp::getOperandSegmentSizeAttr(),
-                      builder.getI32VectorAttr({
+                      builder.getDenseI32ArrayAttr({
                           static_cast<int32_t>(frags[0].regs.size()),
                           static_cast<int32_t>(frags[1].regs.size()),
                           static_cast<int32_t>(frags[2].regs.size()),

diff  --git a/mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp b/mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
index 650d7a2a511a2..74b503c33c84b 100644
--- a/mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
+++ b/mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
@@ -111,8 +111,8 @@ static void buildStructuredOp(OpBuilder &b, OperationState &state,
   state.addAttributes(attributes);
   state.addAttribute(
       "operand_segment_sizes",
-      b.getI32VectorAttr({static_cast<int32_t>(inputs.size()),
-                          static_cast<int32_t>(outputs.size())}));
+      b.getDenseI32ArrayAttr({static_cast<int32_t>(inputs.size()),
+                              static_cast<int32_t>(outputs.size())}));
 
   // Create and fill the region of the structured operation.
   Region &region = *state.addRegion();
@@ -157,7 +157,7 @@ parseCommonStructuredOpParts(OpAsmParser &parser, OperationState &result,
     return failure();
 
   result.addAttribute("operand_segment_sizes",
-                      parser.getBuilder().getI32VectorAttr(
+                      parser.getBuilder().getDenseI32ArrayAttr(
                           {static_cast<int32_t>(inputsOperands.size()),
                            static_cast<int32_t>(outputsOperands.size())}));
   return success();

diff  --git a/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp b/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
index b2960a68144f9..82e276efdfa21 100644
--- a/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
+++ b/mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
@@ -361,7 +361,7 @@ ParseResult ParallelOp::parse(OpAsmParser &parser, OperationState &result) {
 
   result.addAttribute(
       ParallelOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr(
+      builder.getDenseI32ArrayAttr(
           {static_cast<int32_t>(async.has_value() ? 1 : 0),
            static_cast<int32_t>(waitOperands.size()),
            static_cast<int32_t>(numGangs.has_value() ? 1 : 0),
@@ -590,7 +590,7 @@ ParseResult LoopOp::parse(OpAsmParser &parser, OperationState &result) {
     return failure();
 
   result.addAttribute(LoopOp::getOperandSegmentSizeAttr(),
-                      builder.getI32VectorAttr(
+                      builder.getDenseI32ArrayAttr(
                           {static_cast<int32_t>(gangNum.has_value() ? 1 : 0),
                            static_cast<int32_t>(gangStatic.has_value() ? 1 : 0),
                            static_cast<int32_t>(worker.has_value() ? 1 : 0),

diff  --git a/mlir/lib/Dialect/SCF/IR/SCF.cpp b/mlir/lib/Dialect/SCF/IR/SCF.cpp
index 607811aa2a801..019829597f12d 100644
--- a/mlir/lib/Dialect/SCF/IR/SCF.cpp
+++ b/mlir/lib/Dialect/SCF/IR/SCF.cpp
@@ -2105,10 +2105,10 @@ void ParallelOp::build(
   result.addOperands(initVals);
   result.addAttribute(
       ParallelOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({static_cast<int32_t>(lowerBounds.size()),
-                                static_cast<int32_t>(upperBounds.size()),
-                                static_cast<int32_t>(steps.size()),
-                                static_cast<int32_t>(initVals.size())}));
+      builder.getDenseI32ArrayAttr({static_cast<int32_t>(lowerBounds.size()),
+                                    static_cast<int32_t>(upperBounds.size()),
+                                    static_cast<int32_t>(steps.size()),
+                                    static_cast<int32_t>(initVals.size())}));
   result.addTypes(initVals.getTypes());
 
   OpBuilder::InsertionGuard guard(builder);
@@ -2258,10 +2258,10 @@ ParseResult ParallelOp::parse(OpAsmParser &parser, OperationState &result) {
   // Set `operand_segment_sizes` attribute.
   result.addAttribute(
       ParallelOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({static_cast<int32_t>(lower.size()),
-                                static_cast<int32_t>(upper.size()),
-                                static_cast<int32_t>(steps.size()),
-                                static_cast<int32_t>(initVals.size())}));
+      builder.getDenseI32ArrayAttr({static_cast<int32_t>(lower.size()),
+                                    static_cast<int32_t>(upper.size()),
+                                    static_cast<int32_t>(steps.size()),
+                                    static_cast<int32_t>(initVals.size())}));
 
   // Parse attributes.
   if (parser.parseOptionalAttrDict(result.attributes) ||

diff  --git a/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp b/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
index f7758f904675f..eaa623f1cf44e 100644
--- a/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
+++ b/mlir/lib/Dialect/SPIRV/IR/SPIRVOps.cpp
@@ -1579,10 +1579,10 @@ ParseResult spirv::BranchConditionalOp::parse(OpAsmParser &parser,
     return failure();
   result.addSuccessors(dest);
   result.addOperands(falseOperands);
-  result.addAttribute(
-      spirv::BranchConditionalOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({1, static_cast<int32_t>(trueOperands.size()),
-                                static_cast<int32_t>(falseOperands.size())}));
+  result.addAttribute(spirv::BranchConditionalOp::getOperandSegmentSizeAttr(),
+                      builder.getDenseI32ArrayAttr(
+                          {1, static_cast<int32_t>(trueOperands.size()),
+                           static_cast<int32_t>(falseOperands.size())}));
 
   return success();
 }

diff  --git a/mlir/lib/Dialect/Vector/IR/VectorOps.cpp b/mlir/lib/Dialect/Vector/IR/VectorOps.cpp
index ce494c3d14742..c971cd8149db3 100644
--- a/mlir/lib/Dialect/Vector/IR/VectorOps.cpp
+++ b/mlir/lib/Dialect/Vector/IR/VectorOps.cpp
@@ -3015,10 +3015,10 @@ ParseResult TransferReadOp::parse(OpAsmParser &parser, OperationState &result) {
     if (parser.resolveOperand(maskInfo, maskType, result.operands))
       return failure();
   }
-  result.addAttribute(
-      TransferReadOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({1, static_cast<int32_t>(indexInfo.size()), 1,
-                                static_cast<int32_t>(hasMask.succeeded())}));
+  result.addAttribute(TransferReadOp::getOperandSegmentSizeAttr(),
+                      builder.getDenseI32ArrayAttr(
+                          {1, static_cast<int32_t>(indexInfo.size()), 1,
+                           static_cast<int32_t>(hasMask.succeeded())}));
   return parser.addTypeToList(vectorType, result.types);
 }
 
@@ -3465,10 +3465,10 @@ ParseResult TransferWriteOp::parse(OpAsmParser &parser,
     if (parser.resolveOperand(maskInfo, maskType, result.operands))
       return failure();
   }
-  result.addAttribute(
-      TransferWriteOp::getOperandSegmentSizeAttr(),
-      builder.getI32VectorAttr({1, 1, static_cast<int32_t>(indexInfo.size()),
-                                static_cast<int32_t>(hasMask.succeeded())}));
+  result.addAttribute(TransferWriteOp::getOperandSegmentSizeAttr(),
+                      builder.getDenseI32ArrayAttr(
+                          {1, 1, static_cast<int32_t>(indexInfo.size()),
+                           static_cast<int32_t>(hasMask.succeeded())}));
   return failure(shapedType.isa<RankedTensorType>() &&
                  parser.addTypeToList(shapedType, result.types));
 }

diff  --git a/mlir/lib/IR/Operation.cpp b/mlir/lib/IR/Operation.cpp
index b255e80c0960f..e30d5ea1ad235 100644
--- a/mlir/lib/IR/Operation.cpp
+++ b/mlir/lib/IR/Operation.cpp
@@ -987,26 +987,19 @@ LogicalResult OpTrait::impl::verifyValueSizeAttr(Operation *op,
                                                  StringRef attrName,
                                                  StringRef valueGroupName,
                                                  size_t expectedCount) {
-  auto sizeAttr = op->getAttrOfType<DenseIntElementsAttr>(attrName);
+  auto sizeAttr = op->getAttrOfType<DenseI32ArrayAttr>(attrName);
   if (!sizeAttr)
-    return op->emitOpError("requires 1D i32 elements attribute '")
+    return op->emitOpError("requires dense i32 array attribute '")
            << attrName << "'";
 
-  auto sizeAttrType = sizeAttr.getType();
-  if (sizeAttrType.getRank() != 1 ||
-      !sizeAttrType.getElementType().isInteger(32))
-    return op->emitOpError("requires 1D i32 elements attribute '")
-           << attrName << "'";
-
-  if (llvm::any_of(sizeAttr.getValues<APInt>(), [](const APInt &element) {
-        return !element.isNonNegative();
-      }))
+  ArrayRef<int32_t> sizes = sizeAttr.asArrayRef();
+  if (llvm::any_of(sizes, [](int32_t element) { return element < 0; }))
     return op->emitOpError("'")
            << attrName << "' attribute cannot have negative elements";
 
-  size_t totalCount = std::accumulate(
-      sizeAttr.begin(), sizeAttr.end(), 0,
-      [](unsigned all, const APInt &one) { return all + one.getZExtValue(); });
+  size_t totalCount =
+      std::accumulate(sizes.begin(), sizes.end(), 0,
+                      [](unsigned all, int32_t one) { return all + one; });
 
   if (totalCount != expectedCount)
     return op->emitOpError()

diff  --git a/mlir/lib/IR/OperationSupport.cpp b/mlir/lib/IR/OperationSupport.cpp
index 1f7a739cae50d..53d55ef01fdcc 100644
--- a/mlir/lib/IR/OperationSupport.cpp
+++ b/mlir/lib/IR/OperationSupport.cpp
@@ -377,7 +377,7 @@ unsigned OperandRange::getBeginOperandIndex() const {
   return base->getOperandNumber();
 }
 
-OperandRangeRange OperandRange::split(ElementsAttr segmentSizes) const {
+OperandRangeRange OperandRange::split(DenseI32ArrayAttr segmentSizes) const {
   return OperandRangeRange(*this, segmentSizes);
 }
 
@@ -387,18 +387,18 @@ OperandRangeRange OperandRange::split(ElementsAttr segmentSizes) const {
 OperandRangeRange::OperandRangeRange(OperandRange operands,
                                      Attribute operandSegments)
     : OperandRangeRange(OwnerT(operands.getBase(), operandSegments), 0,
-                        operandSegments.cast<DenseElementsAttr>().size()) {}
+                        operandSegments.cast<DenseI32ArrayAttr>().size()) {}
 
 OperandRange OperandRangeRange::join() const {
   const OwnerT &owner = getBase();
-  auto sizeData = owner.second.cast<DenseElementsAttr>().getValues<uint32_t>();
+  ArrayRef<int32_t> sizeData = owner.second.cast<DenseI32ArrayAttr>();
   return OperandRange(owner.first,
                       std::accumulate(sizeData.begin(), sizeData.end(), 0));
 }
 
 OperandRange OperandRangeRange::dereference(const OwnerT &object,
                                             ptr
diff _t index) {
-  auto sizeData = object.second.cast<DenseElementsAttr>().getValues<uint32_t>();
+  ArrayRef<int32_t> sizeData = object.second.cast<DenseI32ArrayAttr>();
   uint32_t startIndex =
       std::accumulate(sizeData.begin(), sizeData.begin() + index, 0);
   return OperandRange(object.first + startIndex, *(sizeData.begin() + index));
@@ -490,11 +490,11 @@ void MutableOperandRange::updateLength(unsigned newLength) {
 
   // Update any of the provided segment attributes.
   for (OperandSegment &segment : operandSegments) {
-    auto attr = segment.second.getValue().cast<DenseIntElementsAttr>();
-    SmallVector<int32_t, 8> segments(attr.getValues<int32_t>());
+    auto attr = segment.second.getValue().cast<DenseI32ArrayAttr>();
+    SmallVector<int32_t, 8> segments(attr.asArrayRef());
     segments[segment.first] += 
diff ;
     segment.second.setValue(
-        DenseIntElementsAttr::get(attr.getType(), segments));
+        DenseI32ArrayAttr::get(attr.getContext(), segments));
     owner->setAttr(segment.second.getName(), segment.second.getValue());
   }
 }
@@ -506,21 +506,20 @@ MutableOperandRangeRange::MutableOperandRangeRange(
     const MutableOperandRange &operands, NamedAttribute operandSegmentAttr)
     : MutableOperandRangeRange(
           OwnerT(operands, operandSegmentAttr), 0,
-          operandSegmentAttr.getValue().cast<DenseElementsAttr>().size()) {}
+          operandSegmentAttr.getValue().cast<DenseI32ArrayAttr>().size()) {}
 
 MutableOperandRange MutableOperandRangeRange::join() const {
   return getBase().first;
 }
 
 MutableOperandRangeRange::operator OperandRangeRange() const {
-  return OperandRangeRange(
-      getBase().first, getBase().second.getValue().cast<DenseElementsAttr>());
+  return OperandRangeRange(getBase().first, getBase().second.getValue());
 }
 
 MutableOperandRange MutableOperandRangeRange::dereference(const OwnerT &object,
                                                           ptr
diff _t index) {
-  auto sizeData =
-      object.second.getValue().cast<DenseElementsAttr>().getValues<uint32_t>();
+  ArrayRef<int32_t> sizeData =
+      object.second.getValue().cast<DenseI32ArrayAttr>();
   uint32_t startIndex =
       std::accumulate(sizeData.begin(), sizeData.begin() + index, 0);
   return object.first.slice(

diff  --git a/mlir/lib/Rewrite/ByteCode.cpp b/mlir/lib/Rewrite/ByteCode.cpp
index d4ca8b25eaa13..388d6dca8f6e0 100644
--- a/mlir/lib/Rewrite/ByteCode.cpp
+++ b/mlir/lib/Rewrite/ByteCode.cpp
@@ -1713,11 +1713,11 @@ executeGetOperandsResults(RangeT values, Operation *op, unsigned index,
     LLVM_DEBUG(llvm::dbgs()
                << "  * Extracting values from `" << attrSizedSegments << "`\n");
 
-    auto segmentAttr = op->getAttrOfType<DenseElementsAttr>(attrSizedSegments);
-    if (!segmentAttr || segmentAttr.getNumElements() <= index)
+    auto segmentAttr = op->getAttrOfType<DenseI32ArrayAttr>(attrSizedSegments);
+    if (!segmentAttr || segmentAttr.asArrayRef().size() <= index)
       return nullptr;
 
-    auto segments = segmentAttr.getValues<int32_t>();
+    ArrayRef<int32_t> segments = segmentAttr;
     unsigned startIndex =
         std::accumulate(segments.begin(), segments.begin() + index, 0);
     values = values.slice(startIndex, *std::next(segments.begin(), index));

diff  --git a/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp b/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
index 089d20a8883d3..92ec7d1d37d1d 100644
--- a/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
+++ b/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
@@ -906,7 +906,7 @@ LogicalResult Importer::processInstruction(llvm::Instruction *inst) {
 
     if (brInst->isConditional()) {
       state.addAttribute(LLVM::CondBrOp::getOperandSegmentSizeAttr(),
-                         b.getI32VectorAttr(operandSegmentSizes));
+                         b.getDenseI32ArrayAttr(operandSegmentSizes));
     }
 
     b.create(state);

diff  --git a/mlir/test/Conversion/OpenMPToLLVM/convert-to-llvmir.mlir b/mlir/test/Conversion/OpenMPToLLVM/convert-to-llvmir.mlir
index b9dcbb4fb7c53..b457811ac32c9 100644
--- a/mlir/test/Conversion/OpenMPToLLVM/convert-to-llvmir.mlir
+++ b/mlir/test/Conversion/OpenMPToLLVM/convert-to-llvmir.mlir
@@ -73,13 +73,13 @@ func.func @wsloop(%arg0: index, %arg1: index, %arg2: index, %arg3: index, %arg4:
   omp.parallel {
     // CHECK: omp.wsloop for (%[[ARG6:.*]], %[[ARG7:.*]]) : i64 = (%[[ARG0]], %[[ARG1]]) to (%[[ARG2]], %[[ARG3]]) step (%[[ARG4]], %[[ARG5]]) {
     "omp.wsloop"(%arg0, %arg1, %arg2, %arg3, %arg4, %arg5) ({
-    ^bb0(%arg6: index, %arg7: index):  
+    ^bb0(%arg6: index, %arg7: index):
       // CHECK-DAG: %[[CAST_ARG6:.*]] = builtin.unrealized_conversion_cast %[[ARG6]] : i64 to index
       // CHECK-DAG: %[[CAST_ARG7:.*]] = builtin.unrealized_conversion_cast %[[ARG7]] : i64 to index
       // CHECK: "test.payload"(%[[CAST_ARG6]], %[[CAST_ARG7]]) : (index, index) -> ()
       "test.payload"(%arg6, %arg7) : (index, index) -> ()
       omp.yield
-    }) {operand_segment_sizes = dense<[2, 2, 2, 0, 0, 0, 0]> : vector<7xi32>} : (index, index, index, index, index, index) -> ()
+    }) {operand_segment_sizes = array<i32: 2, 2, 2, 0, 0, 0, 0>} : (index, index, index, index, index, index) -> ()
     omp.terminator
   }
   return

diff  --git a/mlir/test/Dialect/GPU/invalid.mlir b/mlir/test/Dialect/GPU/invalid.mlir
index 9a8f8849b696c..877ba26ce7619 100644
--- a/mlir/test/Dialect/GPU/invalid.mlir
+++ b/mlir/test/Dialect/GPU/invalid.mlir
@@ -4,7 +4,7 @@ func.func @not_enough_sizes(%sz : index) {
   // expected-error at +1 {{expected 6 or more operands, but found 5}}
   "gpu.launch"(%sz, %sz, %sz, %sz, %sz) ({
     gpu.return
-  }) {operand_segment_sizes = dense<[0, 1, 1, 1, 1, 1, 1, 0]> : vector<8xi32>} : (index, index, index, index, index) -> ()
+  }) {operand_segment_sizes = array<i32: 0, 1, 1, 1, 1, 1, 1, 0>} : (index, index, index, index, index) -> ()
   return
 }
 
@@ -16,7 +16,7 @@ func.func @no_region_attrs(%sz : index) {
   ^bb1(%bx: index, %by: index, %bz: index,
        %tx: index, %ty: index, %tz: index):
     gpu.terminator
-  }) {operand_segment_sizes = dense<[0, 1, 1, 1, 1, 1, 1, 0]> : vector<8xi32>} : (index, index, index, index, index, index) -> ()
+  }) {operand_segment_sizes = array<i32: 0, 1, 1, 1, 1, 1, 1, 0>} : (index, index, index, index, index, index) -> ()
   return
 }
 
@@ -38,7 +38,7 @@ func.func @launch_requires_gpu_return(%sz : index) {
 func.func @launch_func_too_few_operands(%sz : index) {
   // expected-error at +1 {{expected 6 or more operands}}
   "gpu.launch_func"(%sz, %sz, %sz, %sz, %sz)
-      {operand_segment_sizes = dense<[0, 1, 1, 1, 1, 1, 0, 0]> : vector<8xi32>}
+      {operand_segment_sizes = array<i32: 0, 1, 1, 1, 1, 1, 0, 0>}
       : (index, index, index, index, index) -> ()
   return
 }
@@ -57,7 +57,7 @@ module attributes {gpu.container_module} {
   func.func @launch_func_missing_callee_attribute(%sz : index) {
     // expected-error at +1 {{'gpu.launch_func' op requires attribute 'kernel'}}
     "gpu.launch_func"(%sz, %sz, %sz, %sz, %sz, %sz)
-        {operand_segment_sizes = dense<[0, 1, 1, 1, 1, 1, 1, 0, 0]> : vector<9xi32>}
+        {operand_segment_sizes = array<i32: 0, 1, 1, 1, 1, 1, 1, 0, 0>}
         : (index, index, index, index, index, index) -> ()
     return
   }

diff  --git a/mlir/test/Dialect/Linalg/named-ops.mlir b/mlir/test/Dialect/Linalg/named-ops.mlir
index 9c60df33cedd3..6512847c8530d 100644
--- a/mlir/test/Dialect/Linalg/named-ops.mlir
+++ b/mlir/test/Dialect/Linalg/named-ops.mlir
@@ -742,7 +742,7 @@ func.func @conv_interface_wrong_input_indexing_map(
       %1 = "arith.mulf"(%arg3, %arg4) : (f32, f32) -> f32
       %2 = "arith.addf"(%arg5, %1) : (f32, f32) -> f32
       "linalg.yield"(%2) : (f32) -> ()
-    }) {dilations = dense<1> : tensor<2xi64>, linalg.memoized_indexing_maps = [#map0, #map1, #map2], operand_segment_sizes = dense<[2, 1]> : vector<2xi32>, strides = dense<2> : tensor<2xi64>} : (tensor<?x?x?x?xf32>, tensor<?x?x?x?xf32>, tensor<?x?x?x?xf32>) -> tensor<?x?x?x?xf32>
+    }) {dilations = dense<1> : tensor<2xi64>, linalg.memoized_indexing_maps = [#map0, #map1, #map2], operand_segment_sizes = array<i32: 2, 1>, strides = dense<2> : tensor<2xi64>} : (tensor<?x?x?x?xf32>, tensor<?x?x?x?xf32>, tensor<?x?x?x?xf32>) -> tensor<?x?x?x?xf32>
   return %0 : tensor<?x?x?x?xf32>
 }
 
@@ -759,6 +759,6 @@ func.func @conv_interface_wrong_num_operands(
       %1 = "arith.mulf"(%arg3, %arg4) : (f32, f32) -> f32
       %2 = "arith.addf"(%arg5, %1) : (f32, f32) -> f32
       "linalg.yield"(%2) : (f32) -> ()
-    }) {dilations = dense<1> : tensor<2xi64>, linalg.memoized_indexing_maps = [#map0, #map1, #map2], operand_segment_sizes = dense<[2, 1]> : vector<2xi32>, strides = dense<1> : tensor<2xi64>} : (tensor<?x?x?x?xf32>, tensor<?x?x?x?x?xf32>, tensor<?x?x?x?xf32>) -> tensor<?x?x?x?xf32>
+    }) {dilations = dense<1> : tensor<2xi64>, linalg.memoized_indexing_maps = [#map0, #map1, #map2], operand_segment_sizes = array<i32: 2, 1>, strides = dense<1> : tensor<2xi64>} : (tensor<?x?x?x?xf32>, tensor<?x?x?x?x?xf32>, tensor<?x?x?x?xf32>) -> tensor<?x?x?x?xf32>
   return %0 : tensor<?x?x?x?xf32>
 }

diff  --git a/mlir/test/Dialect/OpenMP/invalid.mlir b/mlir/test/Dialect/OpenMP/invalid.mlir
index 6e6277387bd2c..c833bdd0f44a6 100644
--- a/mlir/test/Dialect/OpenMP/invalid.mlir
+++ b/mlir/test/Dialect/OpenMP/invalid.mlir
@@ -197,8 +197,8 @@ func.func @omp_simdloop(%lb : index, %ub : index, %step : i32) -> () {
   "omp.simdloop" (%lb, %ub, %step) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,0]> : vector<4xi32>} :
-    (index, index, i32) -> () 
+  }) {operand_segment_sizes = array<i32: 1,1,1,0>} :
+    (index, index, i32) -> ()
 
   return
 }
@@ -985,7 +985,7 @@ func.func @omp_sections(%data_var : memref<i32>) -> () {
   // expected-error @below {{expected equal sizes for allocate and allocator variables}}
   "omp.sections" (%data_var) ({
     omp.terminator
-  }) {operand_segment_sizes = dense<[0,1,0]> : vector<3xi32>} : (memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 0,1,0>} : (memref<i32>) -> ()
   return
 }
 
@@ -995,7 +995,7 @@ func.func @omp_sections(%data_var : memref<i32>) -> () {
   // expected-error @below {{expected as many reduction symbol references as reduction variables}}
   "omp.sections" (%data_var) ({
     omp.terminator
-  }) {operand_segment_sizes = dense<[1,0,0]> : vector<3xi32>} : (memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 1,0,0>} : (memref<i32>) -> ()
   return
 }
 
@@ -1110,7 +1110,7 @@ func.func @omp_single(%data_var : memref<i32>) -> () {
   // expected-error @below {{expected equal sizes for allocate and allocator variables}}
   "omp.single" (%data_var) ({
     omp.barrier
-  }) {operand_segment_sizes = dense<[1,0]> : vector<2xi32>} : (memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 1,0>} : (memref<i32>) -> ()
   return
 }
 
@@ -1302,7 +1302,7 @@ func.func @taskloop(%lb: i32, %ub: i32, %step: i32) {
   "omp.taskloop"(%lb, %ub, %ub, %lb, %step, %step, %testmemref) ({
   ^bb0(%arg3: i32, %arg4: i32):
     "omp.terminator"() : () -> ()
-  }) {operand_segment_sizes = dense<[2, 2, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0]> : vector<12xi32>} : (i32, i32, i32, i32, i32, i32, memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 2, 2, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0>} : (i32, i32, i32, i32, i32, i32, memref<i32>) -> ()
   return
 }
 
@@ -1315,7 +1315,7 @@ func.func @taskloop(%lb: i32, %ub: i32, %step: i32) {
   "omp.taskloop"(%lb, %ub, %ub, %lb, %step, %step, %testf32, %testf32_2) ({
   ^bb0(%arg3: i32, %arg4: i32):
     "omp.terminator"() : () -> ()
-  }) {operand_segment_sizes = dense<[2, 2, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0]> : vector<12xi32>, reductions = [@add_f32]} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>, !llvm.ptr<f32>) -> ()
+  }) {operand_segment_sizes = array<i32: 2, 2, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0>, reductions = [@add_f32]} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>, !llvm.ptr<f32>) -> ()
   return
 }
 
@@ -1328,7 +1328,7 @@ func.func @taskloop(%lb: i32, %ub: i32, %step: i32) {
   "omp.taskloop"(%lb, %ub, %ub, %lb, %step, %step, %testf32) ({
   ^bb0(%arg3: i32, %arg4: i32):
     "omp.terminator"() : () -> ()
-  }) {operand_segment_sizes = dense<[2, 2, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0]> : vector<12xi32>, reductions = [@add_f32, @add_f32]} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>) -> ()
+  }) {operand_segment_sizes = array<i32: 2, 2, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0>, reductions = [@add_f32, @add_f32]} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>) -> ()
   return
 }
 
@@ -1341,7 +1341,7 @@ func.func @taskloop(%lb: i32, %ub: i32, %step: i32) {
   "omp.taskloop"(%lb, %ub, %ub, %lb, %step, %step, %testf32, %testf32_2) ({
   ^bb0(%arg3: i32, %arg4: i32):
     "omp.terminator"() : () -> ()
-  }) {in_reductions = [@add_f32], operand_segment_sizes = dense<[2, 2, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0]> : vector<12xi32>} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>, !llvm.ptr<f32>) -> ()
+  }) {in_reductions = [@add_f32], operand_segment_sizes = array<i32: 2, 2, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0>} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>, !llvm.ptr<f32>) -> ()
   return
 }
 
@@ -1354,7 +1354,7 @@ func.func @taskloop(%lb: i32, %ub: i32, %step: i32) {
   "omp.taskloop"(%lb, %ub, %ub, %lb, %step, %step, %testf32_2) ({
   ^bb0(%arg3: i32, %arg4: i32):
     "omp.terminator"() : () -> ()
-  }) {in_reductions = [@add_f32, @add_f32], operand_segment_sizes = dense<[2, 2, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0]> : vector<12xi32>} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>) -> ()
+  }) {in_reductions = [@add_f32, @add_f32], operand_segment_sizes = array<i32: 2, 2, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0>} : (i32, i32, i32, i32, i32, i32, !llvm.ptr<f32>) -> ()
   return
 }
 

diff  --git a/mlir/test/Dialect/OpenMP/ops.mlir b/mlir/test/Dialect/OpenMP/ops.mlir
index 6e28324c67846..99c35fcb76616 100644
--- a/mlir/test/Dialect/OpenMP/ops.mlir
+++ b/mlir/test/Dialect/OpenMP/ops.mlir
@@ -59,7 +59,7 @@ func.func @omp_parallel(%data_var : memref<i32>, %if_cond : i1, %num_threads : i
   // CHECK: omp.parallel num_threads(%{{.*}} : i32) allocate(%{{.*}} : memref<i32> -> %{{.*}} : memref<i32>)
     "omp.parallel"(%num_threads, %data_var, %data_var) ({
       omp.terminator
-    }) {operand_segment_sizes = dense<[0,1,1,1,0]> : vector<5xi32>} : (i32, memref<i32>, memref<i32>) -> ()
+    }) {operand_segment_sizes = array<i32: 0,1,1,1,0>} : (i32, memref<i32>, memref<i32>) -> ()
 
   // CHECK: omp.barrier
     omp.barrier
@@ -68,22 +68,22 @@ func.func @omp_parallel(%data_var : memref<i32>, %if_cond : i1, %num_threads : i
   // CHECK: omp.parallel if(%{{.*}}) allocate(%{{.*}} : memref<i32> -> %{{.*}} : memref<i32>)
     "omp.parallel"(%if_cond, %data_var, %data_var) ({
       omp.terminator
-    }) {operand_segment_sizes = dense<[1,0,1,1,0]> : vector<5xi32>} : (i1, memref<i32>, memref<i32>) -> ()
+    }) {operand_segment_sizes = array<i32: 1,0,1,1,0>} : (i1, memref<i32>, memref<i32>) -> ()
 
   // test without allocate
   // CHECK: omp.parallel if(%{{.*}}) num_threads(%{{.*}} : i32)
     "omp.parallel"(%if_cond, %num_threads) ({
       omp.terminator
-    }) {operand_segment_sizes = dense<[1,1,0,0,0]> : vector<5xi32>} : (i1, i32) -> ()
+    }) {operand_segment_sizes = array<i32: 1,1,0,0,0>} : (i1, i32) -> ()
 
     omp.terminator
-  }) {operand_segment_sizes = dense<[1,1,1,1,0]> : vector<5xi32>, proc_bind_val = #omp<procbindkind spread>} : (i1, i32, memref<i32>, memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 1,1,1,1,0>, proc_bind_val = #omp<procbindkind spread>} : (i1, i32, memref<i32>, memref<i32>) -> ()
 
   // test with multiple parameters for single variadic argument
   // CHECK: omp.parallel allocate(%{{.*}} : memref<i32> -> %{{.*}} : memref<i32>)
   "omp.parallel" (%data_var, %data_var) ({
     omp.terminator
-  }) {operand_segment_sizes = dense<[0,0,1,1,0]> : vector<5xi32>} : (memref<i32>, memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 0,0,1,1,0>} : (memref<i32>, memref<i32>) -> ()
 
   return
 }
@@ -141,7 +141,7 @@ func.func @omp_wsloop(%lb : index, %ub : index, %step : index, %data_var : memre
   "omp.wsloop" (%lb, %ub, %step) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,0,0,0,0]> : vector<7xi32>, ordered_val = 1} :
+  }) {operand_segment_sizes = array<i32: 1,1,1,0,0,0,0>, ordered_val = 1} :
     (index, index, index) -> ()
 
   // CHECK: omp.wsloop linear(%{{.*}} = %{{.*}} : memref<i32>) schedule(static)
@@ -149,7 +149,7 @@ func.func @omp_wsloop(%lb : index, %ub : index, %step : index, %data_var : memre
   "omp.wsloop" (%lb, %ub, %step, %data_var, %linear_var) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,1,1,0,0]> : vector<7xi32>, schedule_val = #omp<schedulekind static>} :
+  }) {operand_segment_sizes = array<i32: 1,1,1,1,1,0,0>, schedule_val = #omp<schedulekind static>} :
     (index, index, index, memref<i32>, i32) -> ()
 
   // CHECK: omp.wsloop linear(%{{.*}} = %{{.*}} : memref<i32>, %{{.*}} = %{{.*}} : memref<i32>) schedule(static)
@@ -157,7 +157,7 @@ func.func @omp_wsloop(%lb : index, %ub : index, %step : index, %data_var : memre
   "omp.wsloop" (%lb, %ub, %step, %data_var, %data_var, %linear_var, %linear_var) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,2,2,0,0]> : vector<7xi32>, schedule_val = #omp<schedulekind static>} :
+  }) {operand_segment_sizes = array<i32: 1,1,1,2,2,0,0>, schedule_val = #omp<schedulekind static>} :
     (index, index, index, memref<i32>, memref<i32>, i32, i32) -> ()
 
   // CHECK: omp.wsloop linear(%{{.*}} = %{{.*}} : memref<i32>) schedule(dynamic = %{{.*}}) ordered(2)
@@ -165,7 +165,7 @@ func.func @omp_wsloop(%lb : index, %ub : index, %step : index, %data_var : memre
   "omp.wsloop" (%lb, %ub, %step, %data_var, %linear_var, %chunk_var) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,1,1,0,1]> : vector<7xi32>, schedule_val = #omp<schedulekind dynamic>, ordered_val = 2} :
+  }) {operand_segment_sizes = array<i32: 1,1,1,1,1,0,1>, schedule_val = #omp<schedulekind dynamic>, ordered_val = 2} :
     (index, index, index, memref<i32>, i32, i32) -> ()
 
   // CHECK: omp.wsloop schedule(auto) nowait
@@ -173,7 +173,7 @@ func.func @omp_wsloop(%lb : index, %ub : index, %step : index, %data_var : memre
   "omp.wsloop" (%lb, %ub, %step) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,0,0,0,0]> : vector<7xi32>, nowait, schedule_val = #omp<schedulekind auto>} :
+  }) {operand_segment_sizes = array<i32: 1,1,1,0,0,0,0>, nowait, schedule_val = #omp<schedulekind auto>} :
     (index, index, index) -> ()
 
   return
@@ -333,8 +333,8 @@ func.func @omp_simdloop(%lb : index, %ub : index, %step : index) -> () {
   "omp.simdloop" (%lb, %ub, %step) ({
     ^bb0(%iv: index):
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,0]> : vector<4xi32>} :
-    (index, index, index) -> () 
+  }) {operand_segment_sizes = array<i32: 1,1,1,0>} :
+    (index, index, index) -> ()
 
   return
 }
@@ -383,7 +383,7 @@ func.func @omp_target(%if_cond : i1, %device : si32,  %num_threads : i32) -> ()
     "omp.target"(%if_cond, %device, %num_threads) ({
        // CHECK: omp.terminator
        omp.terminator
-    }) {nowait, operand_segment_sizes = dense<[1,1,1]>: vector<3xi32>} : ( i1, si32, i32 ) -> ()
+    }) {nowait, operand_segment_sizes = array<i32: 1,1,1>} : ( i1, si32, i32 ) -> ()
 
     // CHECK: omp.barrier
     omp.barrier
@@ -1227,13 +1227,13 @@ func.func @omp_sectionsop(%data_var1 : memref<i32>, %data_var2 : memref<i32>,
   "omp.sections" (%data_var1, %data_var1) ({
     // CHECK: omp.terminator
     omp.terminator
-  }) {operand_segment_sizes = dense<[0,1,1]> : vector<3xi32>} : (memref<i32>, memref<i32>) -> ()
+  }) {operand_segment_sizes = array<i32: 0,1,1>} : (memref<i32>, memref<i32>) -> ()
 
     // CHECK: omp.sections reduction(@add_f32 -> %{{.*}} : !llvm.ptr<f32>)
   "omp.sections" (%redn_var) ({
     // CHECK: omp.terminator
     omp.terminator
-  }) {operand_segment_sizes = dense<[1,0,0]> : vector<3xi32>, reductions=[@add_f32]} : (!llvm.ptr<f32>) -> ()
+  }) {operand_segment_sizes = array<i32: 1,0,0>, reductions=[@add_f32]} : (!llvm.ptr<f32>) -> ()
 
   // CHECK: omp.sections nowait {
   omp.sections nowait {

diff  --git a/mlir/test/Dialect/PDL/invalid.mlir b/mlir/test/Dialect/PDL/invalid.mlir
index 954b5d0ab0251..e93d34cb8f031 100644
--- a/mlir/test/Dialect/PDL/invalid.mlir
+++ b/mlir/test/Dialect/PDL/invalid.mlir
@@ -122,7 +122,7 @@ pdl.pattern : benefit(1) {
   // expected-error at below {{expected the same number of attribute values and attribute names, got 1 names and 0 values}}
   %op = "pdl.operation"() {
     attributeNames = ["attr"],
-    operand_segment_sizes = dense<0> : vector<3xi32>
+    operand_segment_sizes = array<i32: 0, 0, 0>
   } : () -> (!pdl.operation)
   rewrite %op with "rewriter"
 }
@@ -230,7 +230,7 @@ pdl.pattern : benefit(1) {
 
     // expected-error at below {{expected no replacement values to be provided when the replacement operation is present}}
     "pdl.replace"(%root, %newOp, %newResult) {
-      operand_segment_sizes = dense<1> : vector<3xi32>
+      operand_segment_sizes = array<i32: 1, 1, 1>
     } : (!pdl.operation, !pdl.operation, !pdl.value) -> ()
   }
 }
@@ -259,7 +259,7 @@ pdl.pattern : benefit(1) {
 
   // expected-error at below {{expected rewrite region to be non-empty if external name is not specified}}
   "pdl.rewrite"(%op) ({}) {
-    operand_segment_sizes = dense<[1,0]> : vector<2xi32>
+    operand_segment_sizes = array<i32: 1,0>
   } : (!pdl.operation) -> ()
 }
 
@@ -272,7 +272,7 @@ pdl.pattern : benefit(1) {
   "pdl.rewrite"(%op, %op) ({
     ^bb1:
   }) {
-    operand_segment_sizes = dense<1> : vector<2xi32>
+    operand_segment_sizes = array<i32: 1, 1>
   }: (!pdl.operation, !pdl.operation) -> ()
 }
 
@@ -286,7 +286,7 @@ pdl.pattern : benefit(1) {
     ^bb1:
   }) {
     name = "foo",
-    operand_segment_sizes = dense<[1,0]> : vector<2xi32>
+    operand_segment_sizes = array<i32: 1,0>
   } : (!pdl.operation) -> ()
 }
 

diff  --git a/mlir/test/Dialect/PDLInterp/invalid.mlir b/mlir/test/Dialect/PDLInterp/invalid.mlir
index e44625d91fc8f..f194d3246ffaf 100644
--- a/mlir/test/Dialect/PDLInterp/invalid.mlir
+++ b/mlir/test/Dialect/PDLInterp/invalid.mlir
@@ -19,8 +19,7 @@ pdl_interp.func @rewriter() {
     inferredResultTypes,
     inputAttributeNames = [],
     name = "foo.op",
-    operand_segment_sizes = dense<[0, 0, 1]> : vector<3xi32>
+    operand_segment_sizes = array<i32: 0, 0, 1>
   } : (!pdl.type) -> (!pdl.operation)
   pdl_interp.finalize
 }
-

diff  --git a/mlir/test/Dialect/SCF/invalid.mlir b/mlir/test/Dialect/SCF/invalid.mlir
index 6fcde70fc14d0..86d1cb65f539f 100644
--- a/mlir/test/Dialect/SCF/invalid.mlir
+++ b/mlir/test/Dialect/SCF/invalid.mlir
@@ -131,7 +131,7 @@ func.func @parallel_body_arguments_wrong_type(
   "scf.parallel"(%arg0, %arg1, %arg2) ({
     ^bb0(%i0: f32):
       scf.yield
-  }) {operand_segment_sizes = dense<[1, 1, 1, 0]>: vector<4xi32>}: (index, index, index) -> ()
+  }) {operand_segment_sizes = array<i32: 1, 1, 1, 0>}: (index, index, index) -> ()
   return
 }
 
@@ -143,7 +143,7 @@ func.func @parallel_body_wrong_number_of_arguments(
   "scf.parallel"(%arg0, %arg1, %arg2) ({
     ^bb0(%i0: index, %i1: index):
       scf.yield
-  }) {operand_segment_sizes = dense<[1, 1, 1, 0]>: vector<4xi32>}: (index, index, index) -> ()
+  }) {operand_segment_sizes = array<i32: 1, 1, 1, 0>}: (index, index, index) -> ()
   return
 }
 

diff  --git a/mlir/test/Dialect/SPIRV/IR/control-flow-ops.mlir b/mlir/test/Dialect/SPIRV/IR/control-flow-ops.mlir
index 4a2c9fd9dbcb7..1780c94a730bb 100644
--- a/mlir/test/Dialect/SPIRV/IR/control-flow-ops.mlir
+++ b/mlir/test/Dialect/SPIRV/IR/control-flow-ops.mlir
@@ -117,7 +117,7 @@ func.func @wrong_condition_type() -> () {
 func.func @wrong_accessor_count() -> () {
   %true = spv.Constant true
   // expected-error @+1 {{requires 2 successors but found 1}}
-  "spv.BranchConditional"(%true)[^one] {operand_segment_sizes = dense<[1, 0, 0]>: vector<3xi32>} : (i1) -> ()
+  "spv.BranchConditional"(%true)[^one] {operand_segment_sizes = array<i32: 1, 0, 0>} : (i1) -> ()
 ^one:
   spv.Return
 ^two:
@@ -130,7 +130,7 @@ func.func @wrong_number_of_weights() -> () {
   %true = spv.Constant true
   // expected-error @+1 {{must have exactly two branch weights}}
   "spv.BranchConditional"(%true)[^one, ^two] {branch_weights = [1 : i32, 2 : i32, 3 : i32],
-                                              operand_segment_sizes = dense<[1, 0, 0]>: vector<3xi32>} : (i1) -> ()
+                                              operand_segment_sizes = array<i32: 1, 0, 0>} : (i1) -> ()
 ^one:
   spv.Return
 ^two:

diff  --git a/mlir/test/IR/parser.mlir b/mlir/test/IR/parser.mlir
index 34b667ffa6002..ba57a91150f09 100644
--- a/mlir/test/IR/parser.mlir
+++ b/mlir/test/IR/parser.mlir
@@ -457,7 +457,7 @@ func.func @verbose_terminators() -> (i1, i17) {
 
 ^bb1(%x : i1, %y : i17):
 // CHECK:  cf.cond_br %{{.*}}, ^bb2(%{{.*}} : i17), ^bb3(%{{.*}}, %{{.*}} : i1, i17)
-  "cf.cond_br"(%x, %y, %x, %y) [^bb2, ^bb3] {operand_segment_sizes = dense<[1, 1, 2]>: vector<3xi32>} : (i1, i17, i1, i17) -> ()
+  "cf.cond_br"(%x, %y, %x, %y) [^bb2, ^bb3] {operand_segment_sizes = array<i32: 1, 1, 2>} : (i1, i17, i1, i17) -> ()
 
 ^bb2(%a : i17):
   %true = arith.constant true

diff  --git a/mlir/test/IR/traits.mlir b/mlir/test/IR/traits.mlir
index b5846d1a1c48e..80e0d4c8c5e91 100644
--- a/mlir/test/IR/traits.mlir
+++ b/mlir/test/IR/traits.mlir
@@ -375,114 +375,101 @@ func.func private @foo()
 // -----
 
 func.func @failedMissingOperandSizeAttr(%arg: i32) {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'operand_segment_sizes'}}
+  // expected-error @+1 {{requires dense i32 array attribute 'operand_segment_sizes'}}
   "test.attr_sized_operands"(%arg, %arg, %arg, %arg) : (i32, i32, i32, i32) -> ()
 }
 
 // -----
 
 func.func @failedOperandSizeAttrWrongType(%arg: i32) {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'operand_segment_sizes'}}
+  // expected-error @+1 {{requires dense i32 array attribute 'operand_segment_sizes'}}
   "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = 10} : (i32, i32, i32, i32) -> ()
 }
 
 // -----
 
-func.func @failedOperandSizeAttrWrongRank(%arg: i32) {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'operand_segment_sizes'}}
-  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = dense<[[1, 1], [1, 1]]>: vector<2x2xi32>} : (i32, i32, i32, i32) -> ()
-}
-
-// -----
-
 func.func @failedOperandSizeAttrWrongElementType(%arg: i32) {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'operand_segment_sizes'}}
-  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = dense<[1, 1, 1, 1]>: vector<4xi64>} : (i32, i32, i32, i32) -> ()
+  // expected-error @+1 {{requires dense i32 array attribute 'operand_segment_sizes'}}
+  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = array<i64: 1, 1, 1, 1>} : (i32, i32, i32, i32) -> ()
 }
 
 // -----
 
 func.func @failedOperandSizeAttrNegativeValue(%arg: i32) {
   // expected-error @+1 {{'operand_segment_sizes' attribute cannot have negative elements}}
-  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = dense<[1, 1, -1, 1]>: vector<4xi32>} : (i32, i32, i32, i32) -> ()
+  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = array<i32: 1, 1, -1, 1>} : (i32, i32, i32, i32) -> ()
 }
 
 // -----
 
 func.func @failedOperandSizeAttrWrongTotalSize(%arg: i32) {
   // expected-error @+1 {{operand count (4) does not match with the total size (3) specified in attribute 'operand_segment_sizes'}}
-  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = dense<[0, 1, 1, 1]>: vector<4xi32>} : (i32, i32, i32, i32) -> ()
+  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = array<i32: 0, 1, 1, 1>} : (i32, i32, i32, i32) -> ()
 }
 
 // -----
 
 func.func @failedOperandSizeAttrWrongCount(%arg: i32) {
   // expected-error @+1 {{'operand_segment_sizes' attribute for specifying operand segments must have 4 elements}}
-  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = dense<[2, 1, 1]>: vector<3xi32>} : (i32, i32, i32, i32) -> ()
+  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = array<i32: 2, 1, 1>} : (i32, i32, i32, i32) -> ()
 }
 
 // -----
 
 func.func @succeededOperandSizeAttr(%arg: i32) {
   // CHECK: test.attr_sized_operands
-  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = dense<[0, 2, 1, 1]>: vector<4xi32>} : (i32, i32, i32, i32) -> ()
+  "test.attr_sized_operands"(%arg, %arg, %arg, %arg) {operand_segment_sizes = array<i32: 0, 2, 1, 1>} : (i32, i32, i32, i32) -> ()
   return
 }
 
 // -----
 
 func.func @failedMissingResultSizeAttr() {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'result_segment_sizes'}}
+  // expected-error @+1 {{requires dense i32 array attribute 'result_segment_sizes'}}
   %0:4 = "test.attr_sized_results"() : () -> (i32, i32, i32, i32)
 }
 
 // -----
 
 func.func @failedResultSizeAttrWrongType() {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'result_segment_sizes'}}
+  // expected-error @+1 {{requires dense i32 array attribute 'result_segment_sizes'}}
   %0:4 = "test.attr_sized_results"() {result_segment_sizes = 10} : () -> (i32, i32, i32, i32)
 }
 
-// -----
-
-func.func @failedResultSizeAttrWrongRank() {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'result_segment_sizes'}}
-  %0:4 = "test.attr_sized_results"() {result_segment_sizes = dense<[[1, 1], [1, 1]]>: vector<2x2xi32>} : () -> (i32, i32, i32, i32)
-}
 
 // -----
 
 func.func @failedResultSizeAttrWrongElementType() {
-  // expected-error @+1 {{requires 1D i32 elements attribute 'result_segment_sizes'}}
-  %0:4 = "test.attr_sized_results"() {result_segment_sizes = dense<[1, 1, 1, 1]>: vector<4xi64>} : () -> (i32, i32, i32, i32)
+  // expected-error @+1 {{requires dense i32 array attribute 'result_segment_sizes'}}
+  %0:4 = "test.attr_sized_results"() {result_segment_sizes = array<i64: 1, 1, 1, 1>} : () -> (i32, i32, i32, i32)
 }
 
 // -----
 
 func.func @failedResultSizeAttrNegativeValue() {
   // expected-error @+1 {{'result_segment_sizes' attribute cannot have negative elements}}
-  %0:4 = "test.attr_sized_results"() {result_segment_sizes = dense<[1, 1, -1, 1]>: vector<4xi32>} : () -> (i32, i32, i32, i32)
+  %0:4 = "test.attr_sized_results"() {result_segment_sizes = array<i32: 1, 1, -1, 1>} : () -> (i32, i32, i32, i32)
 }
 
 // -----
 
 func.func @failedResultSizeAttrWrongTotalSize() {
   // expected-error @+1 {{result count (4) does not match with the total size (3) specified in attribute 'result_segment_sizes'}}
-  %0:4 = "test.attr_sized_results"() {result_segment_sizes = dense<[0, 1, 1, 1]>: vector<4xi32>} : () -> (i32, i32, i32, i32)
+  %0:4 = "test.attr_sized_results"() {result_segment_sizes = array<i32: 0, 1, 1, 1>} : () -> (i32, i32, i32, i32)
 }
 
 // -----
 
 func.func @failedResultSizeAttrWrongCount() {
   // expected-error @+1 {{'result_segment_sizes' attribute for specifying result segments must have 4 elements, but got 3}}
-  %0:4 = "test.attr_sized_results"() {result_segment_sizes = dense<[2, 1, 1]>: vector<3xi32>} : () -> (i32, i32, i32, i32)
+  %0:4 = "test.attr_sized_results"() {result_segment_sizes = array<i32: 2, 1, 1>} : () -> (i32, i32, i32, i32)
 }
 
 // -----
 
 func.func @succeededResultSizeAttr() {
   // CHECK: test.attr_sized_results
-  %0:4 = "test.attr_sized_results"() {result_segment_sizes = dense<[0, 2, 1, 1]>: vector<4xi32>} : () -> (i32, i32, i32, i32)
+  %0:4 = "test.attr_sized_results"() {result_segment_sizes = array<i32: 0, 2, 1, 1>} : () -> (i32, i32, i32, i32)
   return
 }
 

diff  --git a/mlir/test/Rewrite/pdl-bytecode.mlir b/mlir/test/Rewrite/pdl-bytecode.mlir
index aed1bbc955524..20e2490c2de79 100644
--- a/mlir/test/Rewrite/pdl-bytecode.mlir
+++ b/mlir/test/Rewrite/pdl-bytecode.mlir
@@ -1051,7 +1051,7 @@ module @patterns {
 // CHECK-NEXT:  "test.success"(%[[INPUTS]]#4) : (i32) -> ()
 module @ir attributes { test.get_operands_2 } {
   %inputs:5 = "test.producer"() : () -> (i32, i32, i32, i32, i32)
-  "test.attr_sized_operands"(%inputs#0, %inputs#1, %inputs#2, %inputs#3, %inputs#4) {operand_segment_sizes = dense<[0, 4, 1, 0]> : vector<4xi32>} : (i32, i32, i32, i32, i32) -> ()
+  "test.attr_sized_operands"(%inputs#0, %inputs#1, %inputs#2, %inputs#3, %inputs#4) {operand_segment_sizes = array<i32: 0, 4, 1, 0>} : (i32, i32, i32, i32, i32) -> ()
 }
 
 // -----
@@ -1204,7 +1204,7 @@ module @patterns {
 // CHECK: %[[RESULTS_2_SINGLE:.*]] = "test.success"() : () -> i32
 // CHECK: "test.consumer"(%[[RESULTS_1]]#0, %[[RESULTS_1]]#1, %[[RESULTS_1]]#2, %[[RESULTS_1]]#3, %[[RESULTS_2]]) : (i32, i32, i32, i32, i32) -> ()
 module @ir attributes { test.get_results_2 } {
-  %results:5 = "test.attr_sized_results"() {result_segment_sizes = dense<[0, 4, 1, 0]> : vector<4xi32>} : () -> (i32, i32, i32, i32, i32)
+  %results:5 = "test.attr_sized_results"() {result_segment_sizes = array<i32: 0, 4, 1, 0>} : () -> (i32, i32, i32, i32, i32)
   "test.consumer"(%results#0, %results#1, %results#2, %results#3, %results#4) : (i32, i32, i32, i32, i32) -> ()
 }
 

diff  --git a/mlir/test/Target/LLVMIR/openmp-llvm.mlir b/mlir/test/Target/LLVMIR/openmp-llvm.mlir
index a3e6aa2d9b8b7..05ab821790c73 100644
--- a/mlir/test/Target/LLVMIR/openmp-llvm.mlir
+++ b/mlir/test/Target/LLVMIR/openmp-llvm.mlir
@@ -379,7 +379,7 @@ llvm.func @wsloop_simple(%arg0: !llvm.ptr<f32>) {
       llvm.store %3, %4 : !llvm.ptr<f32>
       omp.yield
       // CHECK: call void @__kmpc_for_static_fini(ptr @[[$wsloop_loc_struct]],
-    }) {operand_segment_sizes = dense<[1, 1, 1, 0, 0, 0, 0]> : vector<7xi32>} : (i64, i64, i64) -> ()
+    }) {operand_segment_sizes = array<i32: 1, 1, 1, 0, 0, 0, 0>} : (i64, i64, i64) -> ()
     omp.terminator
   }
   llvm.return
@@ -399,7 +399,7 @@ llvm.func @wsloop_inclusive_1(%arg0: !llvm.ptr<f32>) {
     %4 = llvm.getelementptr %arg0[%arg1] : (!llvm.ptr<f32>, i64) -> !llvm.ptr<f32>
     llvm.store %3, %4 : !llvm.ptr<f32>
     omp.yield
-  }) {operand_segment_sizes = dense<[1, 1, 1, 0, 0, 0, 0]> : vector<7xi32>} : (i64, i64, i64) -> ()
+  }) {operand_segment_sizes = array<i32: 1, 1, 1, 0, 0, 0, 0>} : (i64, i64, i64) -> ()
   llvm.return
 }
 
@@ -417,7 +417,7 @@ llvm.func @wsloop_inclusive_2(%arg0: !llvm.ptr<f32>) {
     %4 = llvm.getelementptr %arg0[%arg1] : (!llvm.ptr<f32>, i64) -> !llvm.ptr<f32>
     llvm.store %3, %4 : !llvm.ptr<f32>
     omp.yield
-  }) {inclusive, operand_segment_sizes = dense<[1, 1, 1, 0, 0, 0, 0]> : vector<7xi32>} : (i64, i64, i64) -> ()
+  }) {inclusive, operand_segment_sizes = array<i32: 1, 1, 1, 0, 0, 0, 0>} : (i64, i64, i64) -> ()
   llvm.return
 }
 
@@ -697,8 +697,8 @@ llvm.func @simdloop_simple(%lb : i64, %ub : i64, %step : i64, %arg0: !llvm.ptr<f
       %4 = llvm.getelementptr %arg0[%iv] : (!llvm.ptr<f32>, i64) -> !llvm.ptr<f32>
       llvm.store %3, %4 : !llvm.ptr<f32>
       omp.yield
-  }) {operand_segment_sizes = dense<[1,1,1,0]> : vector<4xi32>} :
-    (i64, i64, i64) -> () 
+  }) {operand_segment_sizes = array<i32: 1,1,1,0>} :
+    (i64, i64, i64) -> ()
 
   llvm.return
 }
@@ -720,7 +720,7 @@ llvm.func @simdloop_simple_multiple(%lb1 : i64, %ub1 : i64, %step1 : i64, %lb2 :
     llvm.store %3, %4 : !llvm.ptr<f32>
     llvm.store %3, %5 : !llvm.ptr<f32>
     omp.yield
-  } 
+  }
   llvm.return
 }
 // CHECK: llvm.loop.parallel_accesses
@@ -753,9 +753,9 @@ llvm.func @simdloop_simple_multiple_simdlen(%lb1 : i64, %ub1 : i64, %step1 : i64
 // CHECK-LABEL: @simdloop_if
 llvm.func @simdloop_if(%arg0: !llvm.ptr<i32> {fir.bindc_name = "n"}, %arg1: !llvm.ptr<i32> {fir.bindc_name = "threshold"}) {
   %0 = llvm.mlir.constant(1 : i64) : i64
-  %1 = llvm.alloca %0 x i32 {adapt.valuebyref, in_type = i32, operand_segment_sizes = dense<0> : vector<2xi32>} : (i64) -> !llvm.ptr<i32>
+  %1 = llvm.alloca %0 x i32 {adapt.valuebyref, in_type = i32, operand_segment_sizes = array<i32: 0, 0>} : (i64) -> !llvm.ptr<i32>
   %2 = llvm.mlir.constant(1 : i64) : i64
-  %3 = llvm.alloca %2 x i32 {bindc_name = "i", in_type = i32, operand_segment_sizes = dense<0> : vector<2xi32>, uniq_name = "_QFtest_simdEi"} : (i64) -> !llvm.ptr<i32>
+  %3 = llvm.alloca %2 x i32 {bindc_name = "i", in_type = i32, operand_segment_sizes = array<i32: 0, 0>, uniq_name = "_QFtest_simdEi"} : (i64) -> !llvm.ptr<i32>
   %4 = llvm.mlir.constant(0 : i32) : i32
   %5 = llvm.load %arg0 : !llvm.ptr<i32>
   %6 = llvm.mlir.constant(1 : i32) : i32

diff  --git a/mlir/test/Transforms/canonicalize-block-merge.mlir b/mlir/test/Transforms/canonicalize-block-merge.mlir
index 4c5cd7526a8d3..3a19cac5d3070 100644
--- a/mlir/test/Transforms/canonicalize-block-merge.mlir
+++ b/mlir/test/Transforms/canonicalize-block-merge.mlir
@@ -257,7 +257,7 @@ func.func @nomerge(%arg0: i32, %i: i32) {
 func.func @mismatch_dominance() -> i32 {
   // CHECK: %[[RES:.*]] = "test.producing_br"()
   %0 = "test.producing_br"()[^bb1, ^bb2] {
-        operand_segment_sizes = dense<0> : vector<2 x i32>
+        operand_segment_sizes = array<i32: 0, 0>
 	} : () -> i32
 
 ^bb1:

diff  --git a/mlir/test/Transforms/sccp.mlir b/mlir/test/Transforms/sccp.mlir
index 490809fd5d7d7..2c7f5711f7d49 100644
--- a/mlir/test/Transforms/sccp.mlir
+++ b/mlir/test/Transforms/sccp.mlir
@@ -204,7 +204,7 @@ func.func @simple_produced_operand() -> (i32, i32) {
   // CHECK: %[[ONE:.*]] = arith.constant 1
   %1 = arith.constant 1 : i32
   "test.internal_br"(%1) [^bb1, ^bb2] {
-    operand_segment_sizes = dense<[0, 1]> : vector<2 x i32>
+    operand_segment_sizes = array<i32: 0, 1>
   } : (i32) -> ()
 
 ^bb1:
@@ -231,4 +231,3 @@ func.func @inplace_fold(%arg: i1) -> (i32) {
 ^b:
   return %1 : i32
 }
-

diff  --git a/mlir/test/lib/Dialect/Test/TestOps.td b/mlir/test/lib/Dialect/Test/TestOps.td
index b500a5458d44c..377e902b0a1a3 100644
--- a/mlir/test/lib/Dialect/Test/TestOps.td
+++ b/mlir/test/lib/Dialect/Test/TestOps.td
@@ -716,14 +716,14 @@ def AttrSizedOperandOp : TEST_Op<"attr_sized_operands",
     Variadic<I32>:$b,
     I32:$c,
     Variadic<I32>:$d,
-    I32ElementsAttr:$operand_segment_sizes
+    DenseI32ArrayAttr:$operand_segment_sizes
   );
 }
 
 def AttrSizedResultOp : TEST_Op<"attr_sized_results",
                                 [AttrSizedResultSegments]> {
   let arguments = (ins
-    I32ElementsAttr:$result_segment_sizes
+    DenseI32ArrayAttr:$result_segment_sizes
   );
   let results = (outs
     Variadic<I32>:$a,
@@ -2056,7 +2056,7 @@ def FormatVariadicOfVariadicOperand
    : TEST_Op<"format_variadic_of_variadic_operand"> {
   let arguments = (ins
     VariadicOfVariadic<I64, "operand_segments">:$operand,
-    I32ElementsAttr:$operand_segments
+    DenseI32ArrayAttr:$operand_segments
   );
   let assemblyFormat = [{ $operand `:` type($operand) attr-dict}];
 }

diff  --git a/mlir/test/python/dialects/linalg/ops.py b/mlir/test/python/dialects/linalg/ops.py
index f11c059d94a9d..fbb0552ca260c 100644
--- a/mlir/test/python/dialects/linalg/ops.py
+++ b/mlir/test/python/dialects/linalg/ops.py
@@ -1,12 +1,8 @@
 # RUN: %PYTHON %s | FileCheck %s
 
-from mlir.ir import *
-from mlir.dialects import arith
-from mlir.dialects import builtin
-from mlir.dialects import func
-from mlir.dialects import linalg
-
+from mlir.dialects import arith, builtin, func, linalg
 from mlir.dialects.linalg.opdsl.lang import *
+from mlir.ir import *
 
 
 def run(f):
@@ -138,7 +134,7 @@ def named_form(lhs, rhs):
         # CHECK-NEXT:    arith.addf{{.*}} (f32, f32) -> f32
         # CHECK-NEXT:    linalg.yield{{.*}} (f32) -> ()
         # CHECK-NEXT:    cast = #linalg.type_fn<cast_signed>
-        # CHECK-SAME:    operand_segment_sizes = dense<[2, 1]> : vector<2xi32>
+        # CHECK-SAME:    operand_segment_sizes = array<i32: 2, 1>
         # CHECK-SAME: (tensor<4x16xf32>, tensor<16x8xf32>, tensor<4x8xf32>) -> tensor<4x8xf32>
         return linalg.matmul(lhs, rhs, outs=[init_result.result])
 

diff  --git a/mlir/test/python/dialects/ods_helpers.py b/mlir/test/python/dialects/ods_helpers.py
index 5aa9bef22a6ba..f09d7300b553d 100644
--- a/mlir/test/python/dialects/ods_helpers.py
+++ b/mlir/test/python/dialects/ods_helpers.py
@@ -1,8 +1,10 @@
 # RUN: %PYTHON %s | FileCheck %s
 
 import gc
+
 from mlir.ir import *
 
+
 def run(f):
   print("\nTEST:", f.__name__)
   f()
@@ -125,8 +127,8 @@ class TestOp(OpView):
       # CHECK: %[[V2:.+]] = "custom.value"
       # CHECK: %[[V3:.+]] = "custom.value"
       # CHECK: "custom.test_op"(%[[V0]], %[[V1]], %[[V2]], %[[V3]])
-      # CHECK-SAME: operand_segment_sizes = dense<[1, 2, 1]> : vector<3xi32>
-      # CHECK-SAME: result_segment_sizes = dense<[2, 1, 1]> : vector<3xi32>
+      # CHECK-SAME: operand_segment_sizes = array<i32: 1, 2, 1>
+      # CHECK-SAME: result_segment_sizes = array<i32: 2, 1, 1>>]
       # CHECK-SAME: : (i32, i32, i32, i32) -> (i8, i16, i32, i64)
       op = TestOp.build_generic(
           results=[[t0, t1], t2, t3],

diff  --git a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
index 0b03c76b8ba59..1efe6afccc9c4 100644
--- a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
@@ -94,27 +94,23 @@ static const char *const sameVariadicSizeValueRangeCalcCode = R"(
 /// the op has an attribute specifying the size of each operand/result segment
 /// (variadic or not).
 static const char *const attrSizedSegmentValueRangeCalcCode = R"(
-  const uint32_t *sizeAttrValueIt = &*sizeAttr.value_begin<uint32_t>();
-  if (sizeAttr.isSplat())
-    return {*sizeAttrValueIt * index, *sizeAttrValueIt};
-
   unsigned start = 0;
   for (unsigned i = 0; i < index; ++i)
-    start += sizeAttrValueIt[i];
-  return {start, sizeAttrValueIt[index]};
+    start += sizeAttr[i];
+  return {start, sizeAttr[index]};
 )";
 /// The code snippet to initialize the sizes for the value range calculation.
 ///
 /// {0}: The code to get the attribute.
 static const char *const adapterSegmentSizeAttrInitCode = R"(
   assert(odsAttrs && "missing segment size attribute for op");
-  auto sizeAttr = {0}.cast<::mlir::DenseIntElementsAttr>();
+  auto sizeAttr = {0}.cast<::mlir::DenseI32ArrayAttr>();
 )";
 /// The code snippet to initialize the sizes for the value range calculation.
 ///
 /// {0}: The code to get the attribute.
 static const char *const opSegmentSizeAttrInitCode = R"(
-  auto sizeAttr = {0}.cast<::mlir::DenseIntElementsAttr>();
+  auto sizeAttr = {0}.cast<::mlir::DenseI32ArrayAttr>();
 )";
 
 /// The logic to calculate the actual value range for a declared operand
@@ -124,13 +120,12 @@ static const char *const opSegmentSizeAttrInitCode = R"(
 /// {1}: The index of the main operand.
 static const char *const variadicOfVariadicAdaptorCalcCode = R"(
   auto tblgenTmpOperands = getODSOperands({1});
-  auto sizeAttrValues = {0}().getValues<uint32_t>();
-  auto sizeAttrIt = sizeAttrValues.begin();
+  auto sizes = {0}();
 
   ::llvm::SmallVector<::mlir::ValueRange> tblgenTmpOperandGroups;
-  for (int i = 0, e = ::llvm::size(sizeAttrValues); i < e; ++i, ++sizeAttrIt) {{
-    tblgenTmpOperandGroups.push_back(tblgenTmpOperands.take_front(*sizeAttrIt));
-    tblgenTmpOperands = tblgenTmpOperands.drop_front(*sizeAttrIt);
+  for (int i = 0, e = sizes.size(); i < e; ++i) {{
+    tblgenTmpOperandGroups.push_back(tblgenTmpOperands.take_front(sizes[i]));
+    tblgenTmpOperands = tblgenTmpOperands.drop_front(sizes[i]);
   }
   return tblgenTmpOperandGroups;
 )";
@@ -608,9 +603,8 @@ static void genNativeTraitAttrVerifier(MethodBody &body,
   // {3}: Emit error prefix.
   const char *const checkAttrSizedValueSegmentsCode = R"(
   {
-    auto sizeAttr = tblgen_{0}.cast<::mlir::DenseIntElementsAttr>();
-    auto numElements =
-        sizeAttr.getType().cast<::mlir::ShapedType>().getNumElements();
+    auto sizeAttr = tblgen_{0}.cast<::mlir::DenseI32ArrayAttr>();
+    auto numElements = sizeAttr.asArrayRef().size();
     if (numElements != {1})
       return {3}"'{0}' attribute for specifying {2} segments must have {1} "
                 "elements, but got ") << numElements;
@@ -2056,7 +2050,7 @@ void OpEmitter::genCodeForAddingArgAndRegionForBuilder(
            << op.getGetterName(
                   operand.constraint.getVariadicOfVariadicSegmentSizeAttr())
            << "AttrName(" << builderOpState << ".name), " << odsBuilder
-           << ".getI32TensorAttr(rangeSegments));"
+           << ".getDenseI32ArrayAttr(rangeSegments));"
            << "  }\n";
       continue;
     }
@@ -2071,7 +2065,7 @@ void OpEmitter::genCodeForAddingArgAndRegionForBuilder(
     std::string sizes = op.getGetterName(operandSegmentAttrName);
     body << "  " << builderOpState << ".addAttribute(" << sizes << "AttrName("
          << builderOpState << ".name), "
-         << "odsBuilder.getI32VectorAttr({";
+         << "odsBuilder.getDenseI32ArrayAttr({";
     interleaveComma(llvm::seq<int>(0, op.getNumOperands()), body, [&](int i) {
       const NamedTypeConstraint &operand = op.getOperand(i);
       if (!operand.isVariableLength()) {

diff  --git a/mlir/tools/mlir-tblgen/OpFormatGen.cpp b/mlir/tools/mlir-tblgen/OpFormatGen.cpp
index f52d14d236bea..55a4a8fec3672 100644
--- a/mlir/tools/mlir-tblgen/OpFormatGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpFormatGen.cpp
@@ -1558,7 +1558,7 @@ void OperationFormat::genParserVariadicSegmentResolution(Operator &op,
   if (!allOperands) {
     if (op.getTrait("::mlir::OpTrait::AttrSizedOperandSegments")) {
       body << "  result.addAttribute(\"operand_segment_sizes\", "
-           << "parser.getBuilder().getI32VectorAttr({";
+           << "parser.getBuilder().getDenseI32ArrayAttr({";
       auto interleaveFn = [&](const NamedTypeConstraint &operand) {
         // If the operand is variadic emit the parsed size.
         if (operand.isVariableLength())
@@ -1574,7 +1574,7 @@ void OperationFormat::genParserVariadicSegmentResolution(Operator &op,
         continue;
       body << llvm::formatv(
           "  result.addAttribute(\"{0}\", "
-          "parser.getBuilder().getI32TensorAttr({1}OperandGroupSizes));\n",
+          "parser.getBuilder().getDenseI32ArrayAttr({1}OperandGroupSizes));\n",
           operand.constraint.getVariadicOfVariadicSegmentSizeAttr(),
           operand.name);
     }
@@ -1583,7 +1583,7 @@ void OperationFormat::genParserVariadicSegmentResolution(Operator &op,
   if (!allResultTypes &&
       op.getTrait("::mlir::OpTrait::AttrSizedResultSegments")) {
     body << "  result.addAttribute(\"result_segment_sizes\", "
-         << "parser.getBuilder().getI32VectorAttr({";
+         << "parser.getBuilder().getDenseI32ArrayAttr({";
     auto interleaveFn = [&](const NamedTypeConstraint &result) {
       // If the result is variadic emit the parsed size.
       if (result.isVariableLength())


        


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