OpenACC.cpp

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//===- OpenACC.cpp - OpenACC MLIR Operations ------------------------------===//
//
// Part of the MLIR Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#include "mlir/Dialect/OpenACC/OpenACC.h"
#include "mlir/Dialect/Arith/IR/Arith.h"
#include "mlir/Dialect/Utils/StaticValueUtils.h"
#include "mlir/IR/Builders.h"
#include "mlir/IR/BuiltinAttributes.h"
#include "mlir/IR/BuiltinOps.h"
#include "mlir/IR/BuiltinTypes.h"
#include "mlir/IR/IRMapping.h"
#include "mlir/IR/Matchers.h"
#include "mlir/IR/OpImplementation.h"
#include "mlir/IR/SymbolTable.h"
#include "mlir/Support/LLVM.h"
#include "mlir/Transforms/DialectConversion.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/TypeSwitch.h"
#include "llvm/Support/LogicalResult.h"
#include <variant>
 
using namespace mlir;
using namespace acc;
 
#include "mlir/Dialect/OpenACC/OpenACCOpsDialect.cpp.inc"
#include "mlir/Dialect/OpenACC/OpenACCOpsEnums.cpp.inc"
#include "mlir/Dialect/OpenACC/OpenACCOpsInterfaces.cpp.inc"
#include "mlir/Dialect/OpenACC/OpenACCTypeInterfaces.cpp.inc"
#include "mlir/Dialect/OpenACCMPCommon/Interfaces/OpenACCMPOpsInterfaces.cpp.inc"
 
namespace {
struct PrivateTypePointerLikeModel
    : public PointerLikeType::ExternalModel<PrivateTypePointerLikeModel,
                                            PrivateType> {
  Type getElementType(Type type) const {
    return cast<PrivateType>(type).getBaseTy();
  }
 
  Value genCast(Type, OpBuilder &builder, Location loc, Value value,
                Type resultType) const {
    if (value.getType() == resultType)
      return value;
    if (!isa<PointerLikeType>(resultType))
      return {};
    return UnwrapPrivateOp::create(builder, loc, resultType, value).getResult();
  }
 
  MemRefType getAsMemRefType(Type type, ModuleOp module) const {
    Type baseTy = cast<PrivateType>(type).getBaseTy();
    if (auto memrefTy = dyn_cast<MemRefType>(baseTy))
      return memrefTy;
    if (auto ptrLikeTy = dyn_cast<PointerLikeType>(baseTy))
      return ptrLikeTy.getAsMemRefType(module);
    return {};
  }
};
 
/// Helper function for any of the times we need to modify an ArrayAttr based on
/// a device type list.  Returns a new ArrayAttr with all of the
/// existingDeviceTypes, plus the effective new ones(or an added none if hte new
/// list is empty).
mlir::ArrayAttr addDeviceTypeAffectedOperandHelper(
    MLIRContext *context, mlir::ArrayAttr existingDeviceTypes,
    llvm::ArrayRef<acc::DeviceType> newDeviceTypes) {
  llvm::SmallVector<mlir::Attribute> deviceTypes;
  if (existingDeviceTypes)
    llvm::copy(existingDeviceTypes, std::back_inserter(deviceTypes));
 
  if (newDeviceTypes.empty())
    deviceTypes.push_back(
        acc::DeviceTypeAttr::get(context, acc::DeviceType::None));
 
  for (DeviceType dt : newDeviceTypes)
    deviceTypes.push_back(acc::DeviceTypeAttr::get(context, dt));
 
  return mlir::ArrayAttr::get(context, deviceTypes);
}
 
/// Helper function for any of the times we need to add operands that are
/// affected by a device type list. Returns a new ArrayAttr with all of the
/// existingDeviceTypes, plus the effective new ones (or an added none, if the
/// new list is empty). Additionally, adds the arguments to the argCollection
/// the correct number of times. This will also update a 'segments' array, even
/// if it won't be used.
mlir::ArrayAttr addDeviceTypeAffectedOperandHelper(
    MLIRContext *context, mlir::ArrayAttr existingDeviceTypes,
    llvm::ArrayRef<acc::DeviceType> newDeviceTypes, mlir::ValueRange arguments,
    mlir::MutableOperandRange argCollection,
    llvm::SmallVector<int32_t> &segments) {
  llvm::SmallVector<mlir::Attribute> deviceTypes;
  if (existingDeviceTypes)
    llvm::copy(existingDeviceTypes, std::back_inserter(deviceTypes));
 
  if (newDeviceTypes.empty()) {
    argCollection.append(arguments);
    segments.push_back(arguments.size());
    deviceTypes.push_back(
        acc::DeviceTypeAttr::get(context, acc::DeviceType::None));
  }
 
  for (DeviceType dt : newDeviceTypes) {
    argCollection.append(arguments);
    segments.push_back(arguments.size());
    deviceTypes.push_back(acc::DeviceTypeAttr::get(context, dt));
  }
 
  return mlir::ArrayAttr::get(context, deviceTypes);
}
 
/// Overload for when the 'segments' aren't needed.
mlir::ArrayAttr addDeviceTypeAffectedOperandHelper(
    MLIRContext *context, mlir::ArrayAttr existingDeviceTypes,
    llvm::ArrayRef<acc::DeviceType> newDeviceTypes, mlir::ValueRange arguments,
    mlir::MutableOperandRange argCollection) {
  llvm::SmallVector<int32_t> segments;
  return addDeviceTypeAffectedOperandHelper(context, existingDeviceTypes,
                                            newDeviceTypes, arguments,
                                            argCollection, segments);
}
} // namespace
 
//===----------------------------------------------------------------------===//
// OpenACC operations
//===----------------------------------------------------------------------===//
 
void OpenACCDialect::initialize() {
  addOperations<
#define GET_OP_LIST
#include "mlir/Dialect/OpenACC/OpenACCOps.cpp.inc"
      >();
  addAttributes<
#define GET_ATTRDEF_LIST
#include "mlir/Dialect/OpenACC/OpenACCOpsAttributes.cpp.inc"
      >();
  addTypes<
#define GET_TYPEDEF_LIST
#include "mlir/Dialect/OpenACC/OpenACCOpsTypes.cpp.inc"
      >();
 
  PrivateType::attachInterface<PrivateTypePointerLikeModel>(*getContext());
}
 
//===----------------------------------------------------------------------===//
// RegionBranchOpInterface for acc.kernels / acc.parallel / acc.serial /
// acc.kernel_environment / acc.data / acc.host_data / acc.loop
//===----------------------------------------------------------------------===//
 
/// Generic helper for single-region OpenACC ops that execute their body once
/// and then continue after the operation with their results (if any).
static void
getSingleRegionOpSuccessorRegions(Operation *op, Region &region,
                                  RegionBranchPoint point,
                                  SmallVectorImpl<RegionSuccessor> &regions) {
  if (point.isParent()) {
    regions.push_back(RegionSuccessor(&region));
    return;
  }
 
  regions.push_back(RegionSuccessor(op));
}
 
static ValueRange getSingleRegionSuccessorInputs(Operation *op,
                                                 RegionSuccessor successor) {
  return successor.isOperation() ? ValueRange(op->getResults()) : ValueRange();
}
 
void KernelsOp::getSuccessorRegions(RegionBranchPoint point,
                                    SmallVectorImpl<RegionSuccessor> &regions) {
  getSingleRegionOpSuccessorRegions(getOperation(), getRegion(), point,
                                    regions);
}
 
ValueRange KernelsOp::getSuccessorInputs(RegionSuccessor successor) {
  return getSingleRegionSuccessorInputs(getOperation(), successor);
}
 
void ParallelOp::getSuccessorRegions(
    RegionBranchPoint point, SmallVectorImpl<RegionSuccessor> &regions) {
  getSingleRegionOpSuccessorRegions(getOperation(), getRegion(), point,
                                    regions);
}
 
ValueRange ParallelOp::getSuccessorInputs(RegionSuccessor successor) {
  return getSingleRegionSuccessorInputs(getOperation(), successor);
}
 
void SerialOp::getSuccessorRegions(RegionBranchPoint point,
                                   SmallVectorImpl<RegionSuccessor> &regions) {
  getSingleRegionOpSuccessorRegions(getOperation(), getRegion(), point,
                                    regions);
}
 
ValueRange SerialOp::getSuccessorInputs(RegionSuccessor successor) {
  return getSingleRegionSuccessorInputs(getOperation(), successor);
}
 
void DataOp::getSuccessorRegions(RegionBranchPoint point,
                                 SmallVectorImpl<RegionSuccessor> &regions) {
  getSingleRegionOpSuccessorRegions(getOperation(), getRegion(), point,
                                    regions);
}
 
ValueRange DataOp::getSuccessorInputs(RegionSuccessor successor) {
  return getSingleRegionSuccessorInputs(getOperation(), successor);
}
 
void HostDataOp::getSuccessorRegions(
    RegionBranchPoint point, SmallVectorImpl<RegionSuccessor> &regions) {
  getSingleRegionOpSuccessorRegions(getOperation(), getRegion(), point,
                                    regions);
}
 
ValueRange HostDataOp::getSuccessorInputs(RegionSuccessor successor) {
  return getSingleRegionSuccessorInputs(getOperation(), successor);
}
 
/// Whether the body of a structured `acc.loop` is proven to run. This decides
/// which edges out of the parent are feasible; the edges out of the region are
/// unaffected.
enum class BodyExecution {
  /// The body runs at least once, so the parent cannot bypass the region.
  Always,
  /// The body never runs, so the parent cannot enter the region.
  Never,
  /// Neither could be proven, so the parent may do either.
  Maybe
};
 
/// Prove whether the body of `loopOp` runs. A counted dimension whose entry
/// test already fails at its lower bound runs exactly zero times, so a single
/// comparison decides both `Always` and `Never`. Bounds that are not constant
/// prove nothing.
static BodyExecution getBodyExecution(LoopOp loopOp) {
  // A container-like loop describes its iteration space inside the region.
  if (loopOp.isContainerLike())
    return BodyExecution::Maybe;
 
  // The verifier guarantees one lower bound, upper bound and step per
  // dimension.
  ValueRange lbs = loopOp.getLowerbound();
  ValueRange ubs = loopOp.getUpperbound();
  ValueRange steps = loopOp.getStep();
 
  BodyExecution result = BodyExecution::Always;
  for (unsigned i = 0, e = lbs.size(); i < e; ++i) {
    std::optional<int64_t> lb = getConstantIntValue(lbs[i]);
    std::optional<int64_t> ub = getConstantIntValue(ubs[i]);
    std::optional<int64_t> step = getConstantIntValue(steps[i]);
    // An unknown bound cannot be tested, and a zero step either spins forever
    // or never starts. Neither proves `Always`, but a later dimension may
    // still prove the nest empty: `(0 to %n)` collapsed with `(0 to 0)`.
    if (!lb || !ub || !step || *step == 0) {
      result = BodyExecution::Maybe;
      continue;
    }
 
    // The entry test at the lower bound. A descending dimension compares
    // against its bound the other way round. The attribute is absent when
    // every dimension is exclusive as in `scf.for`, and the verifier otherwise
    // guarantees one entry per dimension.
    std::optional<ArrayRef<bool>> inclusiveUbs =
        loopOp.getInclusiveUpperbound();
    bool inclusiveUb = inclusiveUbs && (*inclusiveUbs)[i];
    assert(*step != 0 && "zero step should have been filtered out");
    bool runsOnce = *step > 0 ? (inclusiveUb ? *lb <= *ub : *lb < *ub)
                              : (inclusiveUb ? *lb >= *ub : *lb > *ub);
    // The dimensions are iterated as a nest, so one empty dimension empties
    // the whole nest whatever the others do, while the body runs only if every
    // dimension runs.
    if (!runsOnce)
      return BodyExecution::Never;
  }
 
  // No dimension was empty, so the body runs unless some dimension was
  // unknown.
  return result;
}
 
void LoopOp::getSuccessorRegions(RegionBranchPoint point,
                                 SmallVectorImpl<RegionSuccessor> &regions) {
  // Unstructured loops: the body may contain arbitrary CFG and early exits.
  // At the RegionBranch level, only model entry into the body and exit to the
  // parent; any backedges are represented inside the region CFG.
  if (getUnstructured()) {
    if (point.isParent()) {
      regions.push_back(RegionSuccessor(&getRegion()));
      return;
    }
    regions.push_back(RegionSuccessor(getOperation()));
    return;
  }
 
  // Structured loops: model a loop-shaped region graph similar to scf.for,
  // minus the entry edge the loop is proven not to take.
  if (point.isParent()) {
    switch (getBodyExecution(*this)) {
    case BodyExecution::Always:
      regions.push_back(RegionSuccessor(&getRegion()));
      return;
    case BodyExecution::Never:
      regions.push_back(RegionSuccessor(getOperation()));
      return;
    case BodyExecution::Maybe:
      break;
    }
  }
 
  regions.push_back(RegionSuccessor(&getRegion()));
  regions.push_back(RegionSuccessor(getOperation()));
}
 
ValueRange LoopOp::getSuccessorInputs(RegionSuccessor successor) {
  return getSingleRegionSuccessorInputs(getOperation(), successor);
}
 
//===----------------------------------------------------------------------===//
// RegionBranchTerminatorOpInterface
//===----------------------------------------------------------------------===//
 
MutableOperandRange
TerminatorOp::getMutableSuccessorOperands(RegionSuccessor /*point*/) {
  // `acc.terminator` does not forward operands.
  return MutableOperandRange(getOperation(), /*start=*/0, /*length=*/0);
}
 
//===----------------------------------------------------------------------===//
// device_type support helpers
//===----------------------------------------------------------------------===//
 
static bool hasDeviceTypeValues(std::optional<mlir::ArrayAttr> arrayAttr) {
  return arrayAttr && *arrayAttr && arrayAttr->size() > 0;
}
 
static bool hasDeviceType(std::optional<mlir::ArrayAttr> arrayAttr,
                          mlir::acc::DeviceType deviceType) {
  if (!hasDeviceTypeValues(arrayAttr))
    return false;
 
  for (auto attr : *arrayAttr) {
    auto deviceTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>(attr);
    if (deviceTypeAttr.getValue() == deviceType)
      return true;
  }
 
  return false;
}
 
static void printDeviceTypes(mlir::OpAsmPrinter &p,
                             std::optional<mlir::ArrayAttr> deviceTypes) {
  if (!hasDeviceTypeValues(deviceTypes))
    return;
 
  p << "[";
  llvm::interleaveComma(*deviceTypes, p,
                        [&](mlir::Attribute attr) { p << attr; });
  p << "]";
}
 
static std::optional<unsigned> findSegment(ArrayAttr segments,
                                           mlir::acc::DeviceType deviceType) {
  unsigned segmentIdx = 0;
  for (auto attr : segments) {
    auto deviceTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>(attr);
    if (deviceTypeAttr.getValue() == deviceType)
      return std::make_optional(segmentIdx);
    ++segmentIdx;
  }
  return std::nullopt;
}
 
static mlir::Operation::operand_range
getValuesFromSegments(std::optional<mlir::ArrayAttr> arrayAttr,
                      mlir::Operation::operand_range range,
                      std::optional<llvm::ArrayRef<int32_t>> segments,
                      mlir::acc::DeviceType deviceType) {
  if (!arrayAttr)
    return range.take_front(0);
  if (auto pos = findSegment(*arrayAttr, deviceType)) {
    int32_t nbOperandsBefore = 0;
    for (unsigned i = 0; i < *pos; ++i)
      nbOperandsBefore += (*segments)[i];
    return range.drop_front(nbOperandsBefore).take_front((*segments)[*pos]);
  }
  return range.take_front(0);
}
 
static mlir::Value
getWaitDevnumValue(std::optional<mlir::ArrayAttr> deviceTypeAttr,
                   mlir::Operation::operand_range operands,
                   std::optional<llvm::ArrayRef<int32_t>> segments,
                   std::optional<mlir::ArrayAttr> hasWaitDevnum,
                   mlir::acc::DeviceType deviceType) {
  if (!hasDeviceTypeValues(deviceTypeAttr))
    return {};
  if (auto pos = findSegment(*deviceTypeAttr, deviceType)) {
    if (hasWaitDevnum && *hasWaitDevnum) {
      auto boolAttr = mlir::dyn_cast<mlir::BoolAttr>((*hasWaitDevnum)[*pos]);
      if (boolAttr && boolAttr.getValue())
        return getValuesFromSegments(deviceTypeAttr, operands, segments,
                                     deviceType)
            .front();
    }
  }
  return {};
}
 
static mlir::Operation::operand_range
getWaitValuesWithoutDevnum(std::optional<mlir::ArrayAttr> deviceTypeAttr,
                           mlir::Operation::operand_range operands,
                           std::optional<llvm::ArrayRef<int32_t>> segments,
                           std::optional<mlir::ArrayAttr> hasWaitDevnum,
                           mlir::acc::DeviceType deviceType) {
  auto range =
      getValuesFromSegments(deviceTypeAttr, operands, segments, deviceType);
  if (range.empty())
    return range;
  if (auto pos = findSegment(*deviceTypeAttr, deviceType)) {
    if (hasWaitDevnum && *hasWaitDevnum) {
      auto boolAttr = mlir::dyn_cast<mlir::BoolAttr>((*hasWaitDevnum)[*pos]);
      if (boolAttr.getValue())
        return range.drop_front(1); // first value is devnum
    }
  }
  return range;
}
 
template <typename Op>
static LogicalResult checkWaitAndAsyncConflict(Op op) {
  for (uint32_t dtypeInt = 0; dtypeInt != acc::getMaxEnumValForDeviceType();
       ++dtypeInt) {
    auto dtype = static_cast<acc::DeviceType>(dtypeInt);
 
    // The asyncOnly attribute represent the async clause without value.
    // Therefore the attribute and operand cannot appear at the same time.
    if (hasDeviceType(op.getAsyncOperandsDeviceType(), dtype) &&
        op.hasAsyncOnly(dtype))
      return op.emitError(
          "asyncOnly attribute cannot appear with asyncOperand");
 
    // The wait attribute represent the wait clause without values. Therefore
    // the attribute and operands cannot appear at the same time.
    if (hasDeviceType(op.getWaitOperandsDeviceType(), dtype) &&
        op.hasWaitOnly(dtype))
      return op.emitError("wait attribute cannot appear with waitOperands");
  }
  return success();
}
 
template <typename Op>
static LogicalResult checkVarAndVarType(Op op) {
  if (!op.getVar())
    return op.emitError("must have var operand");
 
  // A variable must have a type that is either pointer-like or mappable.
  if (!mlir::isa<mlir::acc::PointerLikeType>(op.getVar().getType()) &&
      !mlir::isa<mlir::acc::MappableType>(op.getVar().getType()))
    return op.emitError("var must be mappable or pointer-like");
 
  // When it is a pointer-like type, the varType must capture the target type.
  if (mlir::isa<mlir::acc::PointerLikeType>(op.getVar().getType()) &&
      op.getVarType() == op.getVar().getType())
    return op.emitError("varType must capture the element type of var");
 
  return success();
}
 
template <typename Op>
static LogicalResult checkVarAndAccVar(Op op) {
  if (op.getVar().getType() != op.getAccVar().getType())
    return op.emitError("input and output types must match");
 
  return success();
}
 
template <typename Op>
static LogicalResult checkNoModifier(Op op) {
  if (op.getModifiers() != acc::DataClauseModifier::none)
    return op.emitError("no data clause modifiers are allowed");
  return success();
}
 
template <typename Op>
static LogicalResult
checkValidModifier(Op op, acc::DataClauseModifier validModifiers) {
  if (acc::bitEnumContainsAny(op.getModifiers(), ~validModifiers))
    return op.emitError(
        "invalid data clause modifiers: " +
        acc::stringifyDataClauseModifier(op.getModifiers() & ~validModifiers));
 
  return success();
}
 
template <typename OpT, typename RecipeOpT>
static LogicalResult checkRecipe(OpT op, llvm::StringRef operandName) {
  // Mappable types do not need a recipe because it is possible to generate one
  // from its API. Reject reductions though because no API is available for them
  // at this time.
  if (mlir::acc::isMappableType(op.getVar().getType()) &&
      !std::is_same_v<OpT, acc::ReductionOp>)
    return success();
 
  mlir::SymbolRefAttr operandRecipe = op.getRecipeAttr();
  if (!operandRecipe)
    return op->emitOpError() << "recipe expected for " << operandName;
 
  auto decl =
      SymbolTable::lookupNearestSymbolFrom<RecipeOpT>(op, operandRecipe);
  if (!decl)
    return op->emitOpError()
           << "expected symbol reference " << operandRecipe << " to point to a "
           << operandName << " declaration";
  return success();
}
 
static ParseResult parseVar(mlir::OpAsmParser &parser,
                            OpAsmParser::UnresolvedOperand &var) {
  // Either `var` or `varPtr` keyword is required.
  if (failed(parser.parseOptionalKeyword("varPtr"))) {
    if (failed(parser.parseKeyword("var")))
      return failure();
  }
  if (failed(parser.parseLParen()))
    return failure();
  if (failed(parser.parseOperand(var)))
    return failure();
 
  return success();
}
 
static void printVar(mlir::OpAsmPrinter &p, mlir::Operation *op,
                     mlir::Value var) {
  if (mlir::isa<mlir::acc::PointerLikeType>(var.getType()))
    p << "varPtr(";
  else
    p << "var(";
  p.printOperand(var);
}
 
static ParseResult parseAccVar(mlir::OpAsmParser &parser,
                               OpAsmParser::UnresolvedOperand &var,
                               mlir::Type &accVarType) {
  // Either `accVar` or `accPtr` keyword is required.
  if (failed(parser.parseOptionalKeyword("accPtr"))) {
    if (failed(parser.parseKeyword("accVar")))
      return failure();
  }
  if (failed(parser.parseLParen()))
    return failure();
  if (failed(parser.parseOperand(var)))
    return failure();
  if (failed(parser.parseColon()))
    return failure();
  if (failed(parser.parseType(accVarType)))
    return failure();
  if (failed(parser.parseRParen()))
    return failure();
 
  return success();
}
 
static void printAccVar(mlir::OpAsmPrinter &p, mlir::Operation *op,
                        mlir::Value accVar, mlir::Type accVarType) {
  if (mlir::isa<mlir::acc::PointerLikeType>(accVar.getType()))
    p << "accPtr(";
  else
    p << "accVar(";
  p.printOperand(accVar);
  p << " : ";
  p.printType(accVarType);
  p << ")";
}
 
static ParseResult parseVarPtrType(mlir::OpAsmParser &parser,
                                   mlir::Type &varPtrType,
                                   mlir::TypeAttr &varTypeAttr) {
  if (failed(parser.parseType(varPtrType)))
    return failure();
  if (failed(parser.parseRParen()))
    return failure();
 
  if (succeeded(parser.parseOptionalKeyword("varType"))) {
    if (failed(parser.parseLParen()))
      return failure();
    mlir::Type varType;
    if (failed(parser.parseType(varType)))
      return failure();
    varTypeAttr = mlir::TypeAttr::get(varType);
    if (failed(parser.parseRParen()))
      return failure();
  } else {
    // Set `varType` from the element type of the type of `varPtr`.
    if (auto ptrTy = dyn_cast<acc::PointerLikeType>(varPtrType)) {
      Type elementType = ptrTy.getElementType();
      // Opaque pointers (e.g. !llvm.ptr) have no element type; fall back to
      // using varPtrType itself so that the attribute is always valid.
      varTypeAttr = mlir::TypeAttr::get(elementType ? elementType : varPtrType);
    } else {
      varTypeAttr = mlir::TypeAttr::get(varPtrType);
    }
  }
 
  return success();
}
 
static void printVarPtrType(mlir::OpAsmPrinter &p, mlir::Operation *op,
                            mlir::Type varPtrType, mlir::TypeAttr varTypeAttr) {
  p.printType(varPtrType);
  p << ")";
 
  // Print the `varType` only if it differs from the element type of
  // `varPtr`'s type.
  mlir::Type varType = varTypeAttr.getValue();
  mlir::Type typeToCheckAgainst =
      mlir::isa<mlir::acc::PointerLikeType>(varPtrType)
          ? mlir::cast<mlir::acc::PointerLikeType>(varPtrType).getElementType()
          : varPtrType;
  // Opaque pointers (e.g. !llvm.ptr) have no element type; use varPtrType as
  // the baseline so that the inferred varType is not redundantly printed.
  if (!typeToCheckAgainst)
    typeToCheckAgainst = varPtrType;
  if (typeToCheckAgainst != varType) {
    p << " varType(";
    p.printType(varType);
    p << ")";
  }
}
 
// A location cannot be parsed through the generic attribute directive: the
// generated parser needs a concrete attribute class, while any of the location
// attributes may appear here.
static ParseResult parseSourceLocation(mlir::OpAsmParser &parser,
                                       mlir::LocationAttr &locAttr) {
  llvm::SMLoc attrLoc = parser.getCurrentLocation();
  mlir::Attribute attr;
  if (failed(parser.parseAttribute(attr)))
    return failure();
  locAttr = mlir::dyn_cast<mlir::LocationAttr>(attr);
  if (!locAttr)
    return parser.emitError(attrLoc, "expected location attribute");
  return success();
}
 
static void printSourceLocation(mlir::OpAsmPrinter &p, mlir::Operation *op,
                                mlir::LocationAttr locAttr) {
  p.printAttribute(locAttr);
}
 
static ParseResult parseRecipeSym(mlir::OpAsmParser &parser,
                                  mlir::SymbolRefAttr &recipeAttr) {
  if (failed(parser.parseAttribute(recipeAttr)))
    return failure();
  return success();
}
 
static void printRecipeSym(mlir::OpAsmPrinter &p, mlir::Operation *op,
                           mlir::SymbolRefAttr recipeAttr) {
  p << recipeAttr;
}
 
static ParseResult parseDenseBoolArrayAttr(mlir::OpAsmParser &parser,
                                           mlir::DenseBoolArrayAttr &attr) {
  return parser.parseAttribute(attr);
}
 
static void printDenseBoolArrayAttr(mlir::OpAsmPrinter &p, mlir::Operation *op,
                                    mlir::DenseBoolArrayAttr attr) {
  p << attr;
}
 
static ParseResult parseArrayAttr(mlir::OpAsmParser &parser,
                                  mlir::ArrayAttr &attr) {
  return parser.parseAttribute(attr);
}
 
static void printArrayAttr(mlir::OpAsmPrinter &p, mlir::Operation *op,
                           mlir::ArrayAttr attr) {
  p << attr;
}
 
//===----------------------------------------------------------------------===//
// DataBoundsOp
//===----------------------------------------------------------------------===//
LogicalResult acc::DataBoundsOp::verify() {
  auto extent = getExtent();
  auto upperbound = getUpperbound();
  if (!extent && !upperbound)
    return emitError("expected extent or upperbound.");
  return success();
}
 
//===----------------------------------------------------------------------===//
// PrivateOp
//===----------------------------------------------------------------------===//
LogicalResult acc::PrivateOp::verify() {
  if (getDataClause() != acc::DataClause::acc_private)
    return emitError(
        "data clause associated with private operation must match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  if (failed(
          checkRecipe<acc::PrivateOp, acc::PrivateRecipeOp>(*this, "private")))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// FirstprivateOp
//===----------------------------------------------------------------------===//
LogicalResult acc::FirstprivateOp::verify() {
  if (getDataClause() != acc::DataClause::acc_firstprivate)
    return emitError("data clause associated with firstprivate operation must "
                     "match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  if (failed(checkRecipe<acc::FirstprivateOp, acc::FirstprivateRecipeOp>(
          *this, "firstprivate")))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// ReductionOp
//===----------------------------------------------------------------------===//
LogicalResult acc::ReductionOp::verify() {
  if (getDataClause() != acc::DataClause::acc_reduction)
    return emitError("data clause associated with reduction operation must "
                     "match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  if (failed(checkRecipe<acc::ReductionOp, acc::ReductionRecipeOp>(
          *this, "reduction")))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// DevicePtrOp
//===----------------------------------------------------------------------===//
LogicalResult acc::DevicePtrOp::verify() {
  if (getDataClause() != acc::DataClause::acc_deviceptr)
    return emitError("data clause associated with deviceptr operation must "
                     "match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// PresentOp
//===----------------------------------------------------------------------===//
LogicalResult acc::PresentOp::verify() {
  if (getDataClause() != acc::DataClause::acc_present)
    return emitError(
        "data clause associated with present operation must match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// CopyinOp
//===----------------------------------------------------------------------===//
LogicalResult acc::CopyinOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (!getImplicit() && getDataClause() != acc::DataClause::acc_copyin &&
      getDataClause() != acc::DataClause::acc_copyin_readonly &&
      getDataClause() != acc::DataClause::acc_copy &&
      getDataClause() != acc::DataClause::acc_reduction)
    return emitError(
        "data clause associated with copyin operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkValidModifier(*this, acc::DataClauseModifier::readonly |
                                           acc::DataClauseModifier::always |
                                           acc::DataClauseModifier::capture)))
    return failure();
  return success();
}
 
bool acc::CopyinOp::isCopyinReadonly() {
  return getDataClause() == acc::DataClause::acc_copyin_readonly ||
         acc::bitEnumContainsAny(getModifiers(),
                                 acc::DataClauseModifier::readonly);
}
 
//===----------------------------------------------------------------------===//
// CreateOp
//===----------------------------------------------------------------------===//
LogicalResult acc::CreateOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_create &&
      getDataClause() != acc::DataClause::acc_create_zero &&
      getDataClause() != acc::DataClause::acc_copyout &&
      getDataClause() != acc::DataClause::acc_copyout_zero)
    return emitError(
        "data clause associated with create operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  // this op is the entry part of copyout, so it also needs to allow all
  // modifiers allowed on copyout.
  if (failed(checkValidModifier(*this, acc::DataClauseModifier::zero |
                                           acc::DataClauseModifier::always |
                                           acc::DataClauseModifier::capture)))
    return failure();
  return success();
}
 
bool acc::CreateOp::isCreateZero() {
  // The zero modifier is encoded in the data clause.
  return getDataClause() == acc::DataClause::acc_create_zero ||
         getDataClause() == acc::DataClause::acc_copyout_zero ||
         acc::bitEnumContainsAny(getModifiers(), acc::DataClauseModifier::zero);
}
 
//===----------------------------------------------------------------------===//
// NoCreateOp
//===----------------------------------------------------------------------===//
LogicalResult acc::NoCreateOp::verify() {
  if (getDataClause() != acc::DataClause::acc_no_create)
    return emitError("data clause associated with no_create operation must "
                     "match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// AttachOp
//===----------------------------------------------------------------------===//
LogicalResult acc::AttachOp::verify() {
  if (getDataClause() != acc::DataClause::acc_attach)
    return emitError(
        "data clause associated with attach operation must match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// DeclareDeviceResidentOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::DeclareDeviceResidentOp::verify() {
  if (getDataClause() != acc::DataClause::acc_declare_device_resident)
    return emitError("data clause associated with device_resident operation "
                     "must match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// DeclareLinkOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::DeclareLinkOp::verify() {
  if (getDataClause() != acc::DataClause::acc_declare_link)
    return emitError(
        "data clause associated with link operation must match its intent");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// CopyoutOp
//===----------------------------------------------------------------------===//
LogicalResult acc::CopyoutOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_copyout &&
      getDataClause() != acc::DataClause::acc_copyout_zero &&
      getDataClause() != acc::DataClause::acc_copy &&
      getDataClause() != acc::DataClause::acc_reduction)
    return emitError(
        "data clause associated with copyout operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (!getVar() || !getAccVar())
    return emitError("must have both host and device pointers");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkValidModifier(*this, acc::DataClauseModifier::zero |
                                           acc::DataClauseModifier::always |
                                           acc::DataClauseModifier::capture)))
    return failure();
  return success();
}
 
bool acc::CopyoutOp::isCopyoutZero() {
  return getDataClause() == acc::DataClause::acc_copyout_zero ||
         acc::bitEnumContainsAny(getModifiers(), acc::DataClauseModifier::zero);
}
 
//===----------------------------------------------------------------------===//
// DeleteOp
//===----------------------------------------------------------------------===//
LogicalResult acc::DeleteOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_delete &&
      getDataClause() != acc::DataClause::acc_create &&
      getDataClause() != acc::DataClause::acc_create_zero &&
      getDataClause() != acc::DataClause::acc_copyin &&
      getDataClause() != acc::DataClause::acc_copyin_readonly &&
      getDataClause() != acc::DataClause::acc_present &&
      getDataClause() != acc::DataClause::acc_no_create &&
      getDataClause() != acc::DataClause::acc_declare_device_resident &&
      getDataClause() != acc::DataClause::acc_declare_link)
    return emitError(
        "data clause associated with delete operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (!getAccVar())
    return emitError("must have device pointer");
  // This op is the exit part of copyin and create - thus allow all modifiers
  // allowed on either case.
  if (failed(checkValidModifier(*this, acc::DataClauseModifier::zero |
                                           acc::DataClauseModifier::readonly |
                                           acc::DataClauseModifier::always |
                                           acc::DataClauseModifier::capture)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// DetachOp
//===----------------------------------------------------------------------===//
LogicalResult acc::DetachOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_detach &&
      getDataClause() != acc::DataClause::acc_attach)
    return emitError(
        "data clause associated with detach operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (!getAccVar())
    return emitError("must have device pointer");
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// HostOp
//===----------------------------------------------------------------------===//
LogicalResult acc::UpdateHostOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_update_host &&
      getDataClause() != acc::DataClause::acc_update_self)
    return emitError(
        "data clause associated with host operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (!getVar() || !getAccVar())
    return emitError("must have both host and device pointers");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// DeviceOp
//===----------------------------------------------------------------------===//
LogicalResult acc::UpdateDeviceOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_update_device)
    return emitError(
        "data clause associated with device operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// UseDeviceOp
//===----------------------------------------------------------------------===//
LogicalResult acc::UseDeviceOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_use_device)
    return emitError(
        "data clause associated with use_device operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkNoModifier(*this)))
    return failure();
  return success();
}
 
//===----------------------------------------------------------------------===//
// CacheOp
//===----------------------------------------------------------------------===//
LogicalResult acc::CacheOp::verify() {
  // Test for all clauses this operation can be decomposed from:
  if (getDataClause() != acc::DataClause::acc_cache &&
      getDataClause() != acc::DataClause::acc_cache_readonly)
    return emitError(
        "data clause associated with cache operation must match its intent"
        " or specify original clause this operation was decomposed from");
  if (failed(checkVarAndVarType(*this)))
    return failure();
  if (failed(checkVarAndAccVar(*this)))
    return failure();
  if (failed(checkValidModifier(*this, acc::DataClauseModifier::readonly)))
    return failure();
  return success();
}
 
bool acc::CacheOp::isCacheReadonly() {
  return getDataClause() == acc::DataClause::acc_cache_readonly ||
         acc::bitEnumContainsAny(getModifiers(),
                                 acc::DataClauseModifier::readonly);
}
 
//===----------------------------------------------------------------------===//
// Data entry/exit operations - getEffects implementations
//===----------------------------------------------------------------------===//
 
// This function returns true iff the given operation is enclosed
// in any ACC_COMPUTE_CONSTRUCT_OPS operation.
// It is quite alike acc::getEnclosingComputeOp() utility,
// but we cannot use it here.
static bool isEnclosedIntoComputeOp(mlir::Operation *op) {
  return op->getParentOfType<ACC_COMPUTE_CONSTRUCT_OPS>();
}
 
/// Helper to add an effect on an operand, referenced by its mutable range.
template <typename EffectTy>
static void addOperandEffect(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects,
    MutableOperandRange operand) {
  for (unsigned i = 0, e = operand.size(); i < e; ++i)
    effects.emplace_back(EffectTy::get(), &operand[i]);
}
 
/// Helper to add an effect on a result value.
template <typename EffectTy>
static void addResultEffect(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects,
    Value result) {
  effects.emplace_back(EffectTy::get(), mlir::cast<mlir::OpResult>(result));
}
 
// PrivateOp: accVar result write.
void acc::PrivateOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  // If acc.private is enclosed into a compute operation,
  // then it denotes the device side privatization, hence
  // it does not access the CurrentDeviceIdResource.
  if (!isEnclosedIntoComputeOp(getOperation()))
    effects.emplace_back(MemoryEffects::Read::get(),
                         acc::CurrentDeviceIdResource::get());
  // TODO: should this be MemoryEffects::Allocate?
  addResultEffect<MemoryEffects::Write>(effects, getAccVar());
}
 
// FirstprivateOp: var read, accVar result write.
void acc::FirstprivateOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  // If acc.firstprivate is enclosed into a compute operation,
  // then it denotes the device side privatization, hence
  // it does not access the CurrentDeviceIdResource.
  if (!isEnclosedIntoComputeOp(getOperation()))
    effects.emplace_back(MemoryEffects::Read::get(),
                         acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
  addResultEffect<MemoryEffects::Write>(effects, getAccVar());
}
 
// ReductionOp: var read, accVar result write.
void acc::ReductionOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  // If acc.reduction is enclosed into a compute operation,
  // then it denotes the device side reduction, hence
  // it does not access the CurrentDeviceIdResource.
  if (!isEnclosedIntoComputeOp(getOperation()))
    effects.emplace_back(MemoryEffects::Read::get(),
                         acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
  addResultEffect<MemoryEffects::Write>(effects, getAccVar());
}
 
// DevicePtrOp: RuntimeCounters read.
void acc::DevicePtrOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
}
 
// PresentOp: RuntimeCounters read+write.
void acc::PresentOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
}
 
// CopyinOp: RuntimeCounters read+write, var read, accVar result write.
void acc::CopyinOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
  addResultEffect<MemoryEffects::Write>(effects, getAccVar());
}
 
// CreateOp: RuntimeCounters read+write, accVar result write.
void acc::CreateOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  // TODO: should this be MemoryEffects::Allocate?
  addResultEffect<MemoryEffects::Write>(effects, getAccVar());
}
 
// NoCreateOp: RuntimeCounters read+write.
void acc::NoCreateOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
}
 
// AttachOp: RuntimeCounters read+write, var read.
void acc::AttachOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  // TODO: should we also add MemoryEffects::Write?
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
}
 
// GetDevicePtrOp: RuntimeCounters read.
void acc::GetDevicePtrOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
}
 
// UpdateDeviceOp: var read, accVar result write.
void acc::UpdateDeviceOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
  addResultEffect<MemoryEffects::Write>(effects, getAccVar());
}
 
// UseDeviceOp: RuntimeCounters read.
void acc::UseDeviceOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
}
 
// DeclareDeviceResidentOp: RuntimeCounters write, var read.
void acc::DeclareDeviceResidentOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
}
 
// DeclareLinkOp: RuntimeCounters write, var read.
void acc::DeclareLinkOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getVarMutable());
}
 
// CacheOp: NoMemoryEffect
void acc::CacheOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {}
 
// CopyoutOp: RuntimeCounters read+write, accVar read, var write.
void acc::CopyoutOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getAccVarMutable());
  addOperandEffect<MemoryEffects::Write>(effects, getVarMutable());
}
 
// DeleteOp: RuntimeCounters read+write, accVar read.
void acc::DeleteOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getAccVarMutable());
}
 
// DetachOp: RuntimeCounters read+write, accVar read.
void acc::DetachOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getAccVarMutable());
}
 
// UpdateHostOp: RuntimeCounters read+write, accVar read, var write.
void acc::UpdateHostOp::getEffects(
    SmallVectorImpl<SideEffects::EffectInstance<MemoryEffects::Effect>>
        &effects) {
  effects.emplace_back(MemoryEffects::Read::get(), acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Write::get(),
                       acc::RuntimeCounters::get());
  effects.emplace_back(MemoryEffects::Read::get(),
                       acc::CurrentDeviceIdResource::get());
  addOperandEffect<MemoryEffects::Read>(effects, getAccVarMutable());
  addOperandEffect<MemoryEffects::Write>(effects, getVarMutable());
}
 
namespace {
/// Pattern to remove operation without region that have constant false `ifCond`
/// and remove the condition from the operation if the `ifCond` is a true
/// constant.
template <typename OpTy>
struct RemoveConstantIfCondition : public OpRewritePattern<OpTy> {
  using OpRewritePattern<OpTy>::OpRewritePattern;
 
  LogicalResult matchAndRewrite(OpTy op,
                                PatternRewriter &rewriter) const override {
    // Early return if there is no condition.
    Value ifCond = op.getIfCond();
    if (!ifCond)
      return failure();
 
    IntegerAttr constAttr;
    if (!matchPattern(ifCond, m_Constant(&constAttr)))
      return failure();
    if (constAttr.getInt())
      rewriter.modifyOpInPlace(op, [&]() { op.getIfCondMutable().erase(0); });
    else
      rewriter.eraseOp(op);
 
    return success();
  }
};
 
/// Replaces the given op with the contents of the given single-block region,
/// using the operands of the block terminator to replace operation results.
static void replaceOpWithRegion(PatternRewriter &rewriter, Operation *op,
                                Region &region, ValueRange blockArgs = {}) {
  assert(region.hasOneBlock() && "expected single-block region");
  Block *block = &region.front();
  Operation *terminator = block->getTerminator();
  ValueRange results = terminator->getOperands();
  rewriter.inlineBlockBefore(block, op, blockArgs);
  rewriter.replaceOp(op, results);
  rewriter.eraseOp(terminator);
}
 
/// Pattern to remove operation with region that have constant false `ifCond`
/// and remove the condition from the operation if the `ifCond` is constant
/// true.
template <typename OpTy>
struct RemoveConstantIfConditionWithRegion : public OpRewritePattern<OpTy> {
  using OpRewritePattern<OpTy>::OpRewritePattern;
 
  LogicalResult matchAndRewrite(OpTy op,
                                PatternRewriter &rewriter) const override {
    // Early return if there is no condition.
    Value ifCond = op.getIfCond();
    if (!ifCond)
      return failure();
 
    IntegerAttr constAttr;
    if (!matchPattern(ifCond, m_Constant(&constAttr)))
      return failure();
    if (constAttr.getInt()) {
      rewriter.modifyOpInPlace(op, [&]() { op.getIfCondMutable().erase(0); });
      return success();
    }
 
    // With a constant false condition the construct has no effect, so it is
    // replaced by its body. An empty region has no body, so the op is simply
    // erased.
    Region &region = op.getRegion();
    if (region.empty()) {
      if (op->getNumResults() != 0)
        return rewriter.notifyMatchFailure(op, "empty region with results");
      rewriter.eraseOp(op);
      return success();
    }
    if (!region.hasOneBlock())
      return rewriter.notifyMatchFailure(op, "expected single-block region");
 
    replaceOpWithRegion(rewriter, op, region);
    return success();
  }
};
 
//===----------------------------------------------------------------------===//
// Recipe Region Helpers
//===----------------------------------------------------------------------===//
 
/// Create and populate an init region for privatization recipes.
/// Returns success if the region is populated, failure otherwise.
/// Sets needsFree to indicate if the allocated memory requires deallocation.
/// The `hostVar` is the original host variable used to derive
/// language-specific metadata via `genPrivateVariableInfo`.
/// The `varInfo` output parameter is set to the variable info produced.
static LogicalResult createInitRegion(OpBuilder &builder, Location loc,
                                      Region &initRegion, Value hostVar,
                                      StringRef varName, ValueRange bounds,
                                      bool &needsFree,
                                      acc::VariableInfoAttr &varInfo,
                                      SmallVectorImpl<Value> &destroyValues) {
  Type varType = hostVar.getType();
 
  // Create init block with arguments: original value + bounds
  SmallVector<Type> argTypes{varType};
  SmallVector<Location> argLocs{loc};
  for (Value bound : bounds) {
    argTypes.push_back(bound.getType());
    argLocs.push_back(loc);
  }
 
  Block *initBlock = builder.createBlock(&initRegion);
  initBlock->addArguments(argTypes, argLocs);
  builder.setInsertionPointToStart(initBlock);
 
  Value privatizedValue;
 
  // Get the block argument that represents the original variable
  Value blockArgVar = initBlock->getArgument(0);
 
  // Generate init region body based on variable type
  if (isa<MappableType>(varType)) {
    auto mappableTy = cast<MappableType>(varType);
    auto typedVar = cast<TypedValue<MappableType>>(blockArgVar);
    auto typedHostVar = cast<TypedValue<MappableType>>(hostVar);
    varInfo = mappableTy.genPrivateVariableInfo(typedHostVar);
    privatizedValue =
        mappableTy.generatePrivateInit(builder, loc, typedVar, varName, bounds,
                                       {}, varInfo, needsFree, destroyValues);
    if (!privatizedValue)
      return failure();
  } else {
    assert(isa<PointerLikeType>(varType) && "Expected PointerLikeType");
    auto pointerLikeTy = cast<PointerLikeType>(varType);
    // Use PointerLikeType's allocation API with the block argument
    privatizedValue = pointerLikeTy.genAllocate(builder, loc, varName, varType,
                                                blockArgVar, needsFree);
    if (!privatizedValue)
      return failure();
  }
 
  // Add yield operation to init block
  SmallVector<Value> initResults{privatizedValue};
  initResults.append(destroyValues);
  acc::YieldOp::create(builder, loc, initResults);
 
  return success();
}
 
/// Create and populate a copy region for firstprivate recipes.
/// Returns success if the region is populated, failure otherwise.
/// `varInfo` must be the attribute produced by `createInitRegion` for
/// `MappableType` (it is unused for `PointerLikeType` copy paths).
static LogicalResult createCopyRegion(OpBuilder &builder, Location loc,
                                      Region &copyRegion, Type varType,
                                      ValueRange bounds,
                                      acc::VariableInfoAttr varInfo) {
  // Create copy block with arguments: original value + privatized value +
  // bounds
  SmallVector<Type> copyArgTypes{varType, varType};
  SmallVector<Location> copyArgLocs{loc, loc};
  for (Value bound : bounds) {
    copyArgTypes.push_back(bound.getType());
    copyArgLocs.push_back(loc);
  }
 
  Block *copyBlock = builder.createBlock(&copyRegion);
  copyBlock->addArguments(copyArgTypes, copyArgLocs);
  builder.setInsertionPointToStart(copyBlock);
 
  Value originalArg = copyBlock->getArgument(0);
  Value privatizedArg = copyBlock->getArgument(1);
 
  if (isa<MappableType>(varType)) {
    auto mappableTy = cast<MappableType>(varType);
    // generateCopy(src, dest): copy from original (arg0) into privatized
    // (arg1).
    if (!mappableTy.generateCopy(
            builder, loc, cast<TypedValue<MappableType>>(originalArg),
            cast<TypedValue<MappableType>>(privatizedArg), bounds, varInfo))
      return failure();
  } else {
    assert(isa<PointerLikeType>(varType) && "Expected PointerLikeType");
    auto pointerLikeTy = cast<PointerLikeType>(varType);
    if (!pointerLikeTy.genCopy(
            builder, loc, cast<TypedValue<PointerLikeType>>(privatizedArg),
            cast<TypedValue<PointerLikeType>>(originalArg), varType))
      return failure();
  }
 
  // Add terminator to copy block
  acc::TerminatorOp::create(builder, loc);
 
  return success();
}
 
/// Create and populate a destroy region for privatization recipes.
/// Returns success if the region is populated, failure otherwise.
/// The `varInfo` carries language-specific metadata produced by
/// `createInitRegion`.
static LogicalResult
createDestroyRegion(OpBuilder &builder, Location loc, Region &destroyRegion,
                    Type varType, Value allocRes, ValueRange destroyValues,
                    ValueRange bounds, acc::VariableInfoAttr varInfo) {
  // Create destroy block with arguments: original value + privatized value +
  // values preserved for destruction + bounds.
  SmallVector<Type> destroyArgTypes{varType, varType};
  SmallVector<Location> destroyArgLocs{loc, loc};
  for (Value destroyValue : destroyValues) {
    destroyArgTypes.push_back(destroyValue.getType());
    destroyArgLocs.push_back(loc);
  }
  for (Value bound : bounds) {
    destroyArgTypes.push_back(bound.getType());
    destroyArgLocs.push_back(loc);
  }
 
  Block *destroyBlock = builder.createBlock(&destroyRegion);
  destroyBlock->addArguments(destroyArgTypes, destroyArgLocs);
  builder.setInsertionPointToStart(destroyBlock);
 
  auto varToFree =
      cast<TypedValue<PointerLikeType>>(destroyBlock->getArgument(1));
  if (isa<MappableType>(varType)) {
    auto mappableTy = cast<MappableType>(varType);
    ValueRange destroyArgs =
        destroyBlock->getArguments().slice(2, destroyValues.size());
    ValueRange destroyBounds =
        destroyBlock->getArguments().drop_front(2 + destroyValues.size());
    if (!mappableTy.generatePrivateDestroy(builder, loc, varToFree, destroyArgs,
                                           destroyBounds, varInfo))
      return failure();
  } else {
    assert(isa<PointerLikeType>(varType) && "Expected PointerLikeType");
    auto pointerLikeTy = cast<PointerLikeType>(varType);
    if (!pointerLikeTy.genFree(builder, loc, varToFree, allocRes, varType))
      return failure();
  }
 
  acc::TerminatorOp::create(builder, loc);
  return success();
}
} // namespace
 
//===----------------------------------------------------------------------===//
// PrivateRecipeOp
//===----------------------------------------------------------------------===//
 
static LogicalResult verifyInitLikeSingleArgRegion(
    Operation *op, Region &region, StringRef regionType, StringRef regionName,
    Type type, bool verifyYield, bool optional = false) {
  if (optional && region.empty())
    return success();
 
  if (region.empty())
    return op->emitOpError() << "expects non-empty " << regionName << " region";
  Block &firstBlock = region.front();
  if (firstBlock.getNumArguments() < 1 ||
      firstBlock.getArgument(0).getType() != type)
    return op->emitOpError() << "expects " << regionName
                             << " region first "
                                "argument of the "
                             << regionType << " type";
 
  if (verifyYield) {
    for (YieldOp yieldOp : region.getOps<acc::YieldOp>()) {
      if (yieldOp.getOperands().size() != 1 ||
          yieldOp.getOperands().getTypes()[0] != type)
        return op->emitOpError() << "expects " << regionName
                                 << " region to "
                                    "yield a value of the "
                                 << regionType << " type";
    }
  }
  return success();
}
 
LogicalResult acc::PrivateRecipeOp::verifyRegions() {
  if (failed(verifyInitLikeSingleArgRegion(*this, getInitRegion(),
                                           "privatization", "init", getType(),
                                           /*verifyYield=*/false)))
    return failure();
  if (failed(verifyInitLikeSingleArgRegion(
          *this, getDestroyRegion(), "privatization", "destroy", getType(),
          /*verifyYield=*/false, /*optional=*/true)))
    return failure();
  return success();
}
 
std::optional<PrivateRecipeOp>
PrivateRecipeOp::createAndPopulate(OpBuilder &builder, Location loc,
                                   StringRef recipeName, Value hostVar,
                                   StringRef varName, ValueRange bounds) {
  Type varType = hostVar.getType();
 
  // First, validate that we can handle this variable type
  bool isMappable = isa<MappableType>(varType);
  bool isPointerLike = isa<PointerLikeType>(varType);
 
  // Unsupported type
  if (!isMappable && !isPointerLike)
    return std::nullopt;
 
  OpBuilder::InsertionGuard guard(builder);
 
  // Create the recipe operation first so regions have proper parent context
  auto recipe = PrivateRecipeOp::create(builder, loc, recipeName,
                                        /*sym_visibility=*/nullptr, varType);
 
  // Populate the init region
  bool needsFree = false;
  acc::VariableInfoAttr varInfo;
  SmallVector<Value> destroyValues;
  if (failed(createInitRegion(builder, loc, recipe.getInitRegion(), hostVar,
                              varName, bounds, needsFree, varInfo,
                              destroyValues))) {
    recipe.erase();
    return std::nullopt;
  }
 
  // Only create destroy region if the allocation needs deallocation
  if (needsFree) {
    // Extract the allocated value from the init block's yield operation
    auto yieldOp =
        cast<acc::YieldOp>(recipe.getInitRegion().front().getTerminator());
    Value allocRes = yieldOp.getOperand(0);
 
    if (failed(createDestroyRegion(builder, loc, recipe.getDestroyRegion(),
                                   varType, allocRes, destroyValues, bounds,
                                   varInfo))) {
      recipe.erase();
      return std::nullopt;
    }
  }
 
  return recipe;
}
 
std::optional<PrivateRecipeOp>
PrivateRecipeOp::createAndPopulate(OpBuilder &builder, Location loc,
                                   StringRef recipeName,
                                   FirstprivateRecipeOp firstprivRecipe) {
  // Create the private.recipe op with the same type as the firstprivate.recipe.
  OpBuilder::InsertionGuard guard(builder);
  auto varType = firstprivRecipe.getType();
  auto recipe = PrivateRecipeOp::create(builder, loc, recipeName,
                                        /*sym_visibility=*/nullptr, varType);
 
  // Clone the init region
  IRMapping mapping;
  firstprivRecipe.getInitRegion().cloneInto(&recipe.getInitRegion(), mapping);
 
  // Clone destroy region if the firstprivate.recipe has one.
  if (!firstprivRecipe.getDestroyRegion().empty()) {
    IRMapping mapping;
    firstprivRecipe.getDestroyRegion().cloneInto(&recipe.getDestroyRegion(),
                                                 mapping);
  }
  return recipe;
}
 
//===----------------------------------------------------------------------===//
// FirstprivateRecipeOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::FirstprivateRecipeOp::verifyRegions() {
  if (failed(verifyInitLikeSingleArgRegion(*this, getInitRegion(),
                                           "privatization", "init", getType(),
                                           /*verifyYield=*/false)))
    return failure();
 
  if (getCopyRegion().empty())
    return emitOpError() << "expects non-empty copy region";
 
  Block &firstBlock = getCopyRegion().front();
  if (firstBlock.getNumArguments() < 2 ||
      firstBlock.getArgument(0).getType() != getType())
    return emitOpError() << "expects copy region with two arguments of the "
                            "privatization type";
 
  if (getDestroyRegion().empty())
    return success();
 
  if (failed(verifyInitLikeSingleArgRegion(*this, getDestroyRegion(),
                                           "privatization", "destroy",
                                           getType(), /*verifyYield=*/false)))
    return failure();
 
  return success();
}
 
std::optional<FirstprivateRecipeOp>
FirstprivateRecipeOp::createAndPopulate(OpBuilder &builder, Location loc,
                                        StringRef recipeName, Value hostVar,
                                        StringRef varName, ValueRange bounds) {
  Type varType = hostVar.getType();
 
  // First, validate that we can handle this variable type
  bool isMappable = isa<MappableType>(varType);
  bool isPointerLike = isa<PointerLikeType>(varType);
 
  // Unsupported type
  if (!isMappable && !isPointerLike)
    return std::nullopt;
 
  OpBuilder::InsertionGuard guard(builder);
 
  // Create the recipe operation first so regions have proper parent context
  auto recipe = FirstprivateRecipeOp::create(
      builder, loc, recipeName, /*sym_visibility=*/nullptr, varType);
 
  // Populate the init region
  bool needsFree = false;
  // Filled by createInitRegion for mappable variables (genPrivateVariableInfo);
  // then passed through to copy/destroy so generateCopy /
  // generatePrivateDestroy receive the same metadata as generatePrivateInit.
  acc::VariableInfoAttr varInfo;
  SmallVector<Value> destroyValues;
  if (failed(createInitRegion(builder, loc, recipe.getInitRegion(), hostVar,
                              varName, bounds, needsFree, varInfo,
                              destroyValues))) {
    recipe.erase();
    return std::nullopt;
  }
 
  // Populate the copy region (uses varInfo for MappableType::generateCopy).
  if (failed(createCopyRegion(builder, loc, recipe.getCopyRegion(), varType,
                              bounds, varInfo))) {
    recipe.erase();
    return std::nullopt;
  }
 
  // Only create destroy region if the allocation needs deallocation
  if (needsFree) {
    // Extract the allocated value from the init block's yield operation
    auto yieldOp =
        cast<acc::YieldOp>(recipe.getInitRegion().front().getTerminator());
    Value allocRes = yieldOp.getOperand(0);
 
    if (failed(createDestroyRegion(builder, loc, recipe.getDestroyRegion(),
                                   varType, allocRes, destroyValues, bounds,
                                   varInfo))) {
      recipe.erase();
      return std::nullopt;
    }
  }
 
  return recipe;
}
 
//===----------------------------------------------------------------------===//
// ReductionRecipeOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::ReductionRecipeOp::verifyRegions() {
  if (failed(verifyInitLikeSingleArgRegion(*this, getInitRegion(), "reduction",
                                           "init", getType(),
                                           /*verifyYield=*/false)))
    return failure();
 
  if (getCombinerRegion().empty())
    return emitOpError() << "expects non-empty combiner region";
 
  Block &reductionBlock = getCombinerRegion().front();
  if (reductionBlock.getNumArguments() < 2 ||
      reductionBlock.getArgument(0).getType() != getType() ||
      reductionBlock.getArgument(1).getType() != getType())
    return emitOpError() << "expects combiner region with the first two "
                         << "arguments of the reduction type";
 
  for (YieldOp yieldOp : getCombinerRegion().getOps<YieldOp>()) {
    if (yieldOp.getOperands().size() != 1 ||
        yieldOp.getOperands().getTypes()[0] != getType())
      return emitOpError() << "expects combiner region to yield a value "
                              "of the reduction type";
  }
 
  return success();
}
 
//===----------------------------------------------------------------------===//
// ParallelOp
//===----------------------------------------------------------------------===//
 
/// Check dataOperands for acc.parallel, acc.serial and acc.kernels.
template <typename Op>
static LogicalResult checkDataOperands(Op op,
                                       const mlir::ValueRange &operands) {
  for (mlir::Value operand : operands)
    if (!mlir::isa<acc::AttachOp, acc::CopyinOp, acc::CopyoutOp, acc::CreateOp,
                   acc::DeleteOp, acc::DetachOp, acc::DevicePtrOp,
                   acc::GetDevicePtrOp, acc::NoCreateOp, acc::PresentOp,
                   acc::MapInfoOp>(operand.getDefiningOp()))
      return op.emitError(
          "expect data entry/exit operation or acc.getdeviceptr "
          "as defining op");
  return success();
}
 
template <typename OpT, typename RecipeOpT>
static LogicalResult checkPrivateOperands(mlir::Operation *accConstructOp,
                                          const mlir::ValueRange &operands,
                                          llvm::StringRef operandName) {
  llvm::DenseSet<Value> set;
  for (mlir::Value operand : operands) {
    if (!mlir::isa<OpT>(operand.getDefiningOp()))
      return accConstructOp->emitOpError()
             << "expected " << operandName << " as defining op";
    if (!set.insert(operand).second)
      return accConstructOp->emitOpError()
             << operandName << " operand appears more than once";
  }
  return success();
}
 
unsigned ParallelOp::getNumDataOperands() {
  return getReductionOperands().size() + getPrivateOperands().size() +
         getFirstprivateOperands().size() + getDataClauseOperands().size();
}
 
Value ParallelOp::getDataOperand(unsigned i) {
  unsigned numOptional = getAsyncOperands().size();
  numOptional += getNumGangs().size();
  numOptional += getNumWorkers().size();
  numOptional += getVectorLength().size();
  numOptional += getIfCond() ? 1 : 0;
  numOptional += getSelfCond() ? 1 : 0;
  return getOperand(getWaitOperands().size() + numOptional + i);
}
 
template <typename Op>
static LogicalResult verifyDeviceTypeCountMatch(Op op, OperandRange operands,
                                                ArrayAttr deviceTypes,
                                                llvm::StringRef keyword) {
  if (!operands.empty() &&
      (!deviceTypes || deviceTypes.getValue().size() != operands.size()))
    return op.emitOpError() << keyword << " operands count must match "
                            << keyword << " device_type count";
  return success();
}
 
template <typename Op>
static LogicalResult verifyDeviceTypeAndSegmentCountMatch(
    Op op, OperandRange operands, DenseI32ArrayAttr segments,
    ArrayAttr deviceTypes, llvm::StringRef keyword, int32_t maxInSegment = 0) {
  std::size_t numOperandsInSegments = 0;
  std::size_t nbOfSegments = 0;
 
  if (segments) {
    for (auto segCount : segments.asArrayRef()) {
      if (maxInSegment != 0 && segCount > maxInSegment)
        return op.emitOpError() << keyword << " expects a maximum of "
                                << maxInSegment << " values per segment";
      numOperandsInSegments += segCount;
      ++nbOfSegments;
    }
  }
 
  if ((numOperandsInSegments != operands.size()) ||
      (!deviceTypes && !operands.empty()))
    return op.emitOpError()
           << keyword << " operand count does not match count in segments";
  if (deviceTypes && deviceTypes.getValue().size() != nbOfSegments)
    return op.emitOpError()
           << keyword << " segment count does not match device_type count";
  return success();
}
 
LogicalResult acc::ParallelOp::verify() {
  if (failed(checkPrivateOperands<mlir::acc::PrivateOp,
                                  mlir::acc::PrivateRecipeOp>(
          *this, getPrivateOperands(), "private")))
    return failure();
  if (failed(checkPrivateOperands<mlir::acc::FirstprivateOp,
                                  mlir::acc::FirstprivateRecipeOp>(
          *this, getFirstprivateOperands(), "firstprivate")))
    return failure();
  if (failed(checkPrivateOperands<mlir::acc::ReductionOp,
                                  mlir::acc::ReductionRecipeOp>(
          *this, getReductionOperands(), "reduction")))
    return failure();
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getNumGangs(), getNumGangsSegmentsAttr(),
          getNumGangsDeviceTypeAttr(), "num_gangs", 3)))
    return failure();
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getWaitOperands(), getWaitOperandsSegmentsAttr(),
          getWaitOperandsDeviceTypeAttr(), "wait")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getNumWorkers(),
                                        getNumWorkersDeviceTypeAttr(),
                                        "num_workers")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getVectorLength(),
                                        getVectorLengthDeviceTypeAttr(),
                                        "vector_length")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getAsyncOperands(),
                                        getAsyncOperandsDeviceTypeAttr(),
                                        "async")))
    return failure();
 
  if (failed(checkWaitAndAsyncConflict<acc::ParallelOp>(*this)))
    return failure();
 
  return checkDataOperands<acc::ParallelOp>(*this, getDataClauseOperands());
}
 
static mlir::Value
getValueInDeviceTypeSegment(std::optional<mlir::ArrayAttr> arrayAttr,
                            mlir::Operation::operand_range range,
                            mlir::acc::DeviceType deviceType) {
  if (!arrayAttr)
    return {};
  if (auto pos = findSegment(*arrayAttr, deviceType))
    return range[*pos];
  return {};
}
 
bool acc::ParallelOp::hasAsyncOnly() {
  return hasAsyncOnly(mlir::acc::DeviceType::None);
}
 
bool acc::ParallelOp::hasAsyncOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getAsyncOnly(), deviceType);
}
 
mlir::Value acc::ParallelOp::getAsyncValue() {
  return getAsyncValue(mlir::acc::DeviceType::None);
}
 
mlir::Value acc::ParallelOp::getAsyncValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getAsyncOperandsDeviceType(),
                                     getAsyncOperands(), deviceType);
}
 
mlir::Value acc::ParallelOp::getNumWorkersValue() {
  return getNumWorkersValue(mlir::acc::DeviceType::None);
}
 
mlir::Value
acc::ParallelOp::getNumWorkersValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getNumWorkersDeviceType(), getNumWorkers(),
                                     deviceType);
}
 
mlir::Value acc::ParallelOp::getVectorLengthValue() {
  return getVectorLengthValue(mlir::acc::DeviceType::None);
}
 
mlir::Value
acc::ParallelOp::getVectorLengthValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getVectorLengthDeviceType(),
                                     getVectorLength(), deviceType);
}
 
mlir::Operation::operand_range ParallelOp::getNumGangsValues() {
  return getNumGangsValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
ParallelOp::getNumGangsValues(mlir::acc::DeviceType deviceType) {
  return getValuesFromSegments(getNumGangsDeviceType(), getNumGangs(),
                               getNumGangsSegments(), deviceType);
}
 
static bool hasAnyGangWorkerVectorForDeviceType(
    std::optional<mlir::ArrayAttr> numGangsDeviceType,
    mlir::Operation::operand_range numGangs,
    std::optional<llvm::ArrayRef<int32_t>> numGangsSegments,
    std::optional<mlir::ArrayAttr> numWorkersDeviceType,
    mlir::Operation::operand_range numWorkers,
    std::optional<mlir::ArrayAttr> vectorLengthDeviceType,
    mlir::Operation::operand_range vectorLength,
    mlir::acc::DeviceType deviceType) {
  return !getValuesFromSegments(numGangsDeviceType, numGangs, numGangsSegments,
                                deviceType)
              .empty() ||
         getValueInDeviceTypeSegment(numWorkersDeviceType, numWorkers,
                                     deviceType) ||
         getValueInDeviceTypeSegment(vectorLengthDeviceType, vectorLength,
                                     deviceType);
}
 
bool acc::ParallelOp::hasAnyGangWorkerVector(mlir::acc::DeviceType deviceType) {
  return hasAnyGangWorkerVectorForDeviceType(
      getNumGangsDeviceType(), getNumGangs(), getNumGangsSegments(),
      getNumWorkersDeviceType(), getNumWorkers(), getVectorLengthDeviceType(),
      getVectorLength(), deviceType);
}
 
bool acc::ParallelOp::isEffectivelySerial() {
  return isGangWorkerVectorAllOne(*this);
}
 
bool acc::ParallelOp::hasWaitOnly() {
  return hasWaitOnly(mlir::acc::DeviceType::None);
}
 
bool acc::ParallelOp::hasWaitOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWaitOnly(), deviceType);
}
 
mlir::Operation::operand_range ParallelOp::getWaitValues() {
  return getWaitValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
ParallelOp::getWaitValues(mlir::acc::DeviceType deviceType) {
  return getWaitValuesWithoutDevnum(
      getWaitOperandsDeviceType(), getWaitOperands(), getWaitOperandsSegments(),
      getHasWaitDevnum(), deviceType);
}
 
mlir::Value ParallelOp::getWaitDevnum() {
  return getWaitDevnum(mlir::acc::DeviceType::None);
}
 
mlir::Value ParallelOp::getWaitDevnum(mlir::acc::DeviceType deviceType) {
  return getWaitDevnumValue(getWaitOperandsDeviceType(), getWaitOperands(),
                            getWaitOperandsSegments(), getHasWaitDevnum(),
                            deviceType);
}
 
void ParallelOp::build(mlir::OpBuilder &odsBuilder,
                       mlir::OperationState &odsState,
                       mlir::ValueRange numGangs, mlir::ValueRange numWorkers,
                       mlir::ValueRange vectorLength,
                       mlir::ValueRange asyncOperands,
                       mlir::ValueRange waitOperands, mlir::Value ifCond,
                       mlir::Value selfCond, mlir::ValueRange reductionOperands,
                       mlir::ValueRange gangPrivateOperands,
                       mlir::ValueRange gangFirstPrivateOperands,
                       mlir::ValueRange dataClauseOperands) {
  ParallelOp::build(
      odsBuilder, odsState, asyncOperands, /*asyncOperandsDeviceType=*/nullptr,
      /*asyncOnly=*/nullptr, waitOperands, /*waitOperandsSegments=*/nullptr,
      /*waitOperandsDeviceType=*/nullptr, /*hasWaitDevnum=*/nullptr,
      /*waitOnly=*/nullptr, numGangs, /*numGangsSegments=*/nullptr,
      /*numGangsDeviceType=*/nullptr, numWorkers,
      /*numWorkersDeviceType=*/nullptr, vectorLength,
      /*vectorLengthDeviceType=*/nullptr, ifCond, selfCond,
      /*selfAttr=*/false, reductionOperands, gangPrivateOperands,
      gangFirstPrivateOperands, dataClauseOperands,
      /*defaultAttr=*/nullptr, /*combined=*/false);
}
 
void acc::ParallelOp::addNumWorkersOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setNumWorkersDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getNumWorkersDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getNumWorkersMutable()));
}
void acc::ParallelOp::addVectorLengthOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setVectorLengthDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getVectorLengthDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getVectorLengthMutable()));
}
 
void acc::ParallelOp::addAsyncOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOnlyAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOnlyAttr(), effectiveDeviceTypes));
}
 
void acc::ParallelOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getAsyncOperandsMutable()));
}
 
void acc::ParallelOp::addNumGangsOperands(
    MLIRContext *context, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  llvm::SmallVector<int32_t> segments;
  if (getNumGangsSegments())
    llvm::copy(*getNumGangsSegments(), std::back_inserter(segments));
 
  setNumGangsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getNumGangsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getNumGangsMutable(), segments));
 
  setNumGangsSegments(segments);
}
void acc::ParallelOp::addWaitOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWaitOnlyAttr(addDeviceTypeAffectedOperandHelper(context, getWaitOnlyAttr(),
                                                     effectiveDeviceTypes));
}
void acc::ParallelOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
 
  llvm::SmallVector<int32_t> segments;
  if (getWaitOperandsSegments())
    llvm::copy(*getWaitOperandsSegments(), std::back_inserter(segments));
 
  setWaitOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getWaitOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getWaitOperandsMutable(), segments));
  setWaitOperandsSegments(segments);
 
  llvm::SmallVector<mlir::Attribute> hasDevnums;
  if (getHasWaitDevnumAttr())
    llvm::copy(getHasWaitDevnumAttr(), std::back_inserter(hasDevnums));
  hasDevnums.insert(
      hasDevnums.end(),
      std::max(effectiveDeviceTypes.size(), static_cast<size_t>(1)),
      mlir::BoolAttr::get(context, hasDevnum));
  setHasWaitDevnumAttr(mlir::ArrayAttr::get(context, hasDevnums));
}
 
void acc::ParallelOp::addPrivatization(MLIRContext *context,
                                       mlir::acc::PrivateOp op,
                                       mlir::acc::PrivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getPrivateOperandsMutable().append(op.getResult());
}
 
void acc::ParallelOp::addFirstPrivatization(
    MLIRContext *context, mlir::acc::FirstprivateOp op,
    mlir::acc::FirstprivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getFirstprivateOperandsMutable().append(op.getResult());
}
 
void acc::ParallelOp::addReduction(MLIRContext *context,
                                   mlir::acc::ReductionOp op,
                                   mlir::acc::ReductionRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getReductionOperandsMutable().append(op.getResult());
}
 
static ParseResult parseNumGangs(
    mlir::OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types, mlir::ArrayAttr &deviceTypes,
    mlir::DenseI32ArrayAttr &segments) {
  llvm::SmallVector<DeviceTypeAttr> attributes;
  llvm::SmallVector<int32_t> seg;
 
  do {
    if (failed(parser.parseLBrace()))
      return failure();
 
    int32_t crtOperandsSize = operands.size();
    if (failed(parser.parseCommaSeparatedList(
            mlir::AsmParser::Delimiter::None, [&]() {
              if (parser.parseOperand(operands.emplace_back()) ||
                  parser.parseColonType(types.emplace_back()))
                return failure();
              return success();
            })))
      return failure();
    seg.push_back(operands.size() - crtOperandsSize);
 
    if (failed(parser.parseRBrace()))
      return failure();
 
    if (succeeded(parser.parseOptionalLSquare())) {
      if (parser.parseAttribute(attributes.emplace_back()) ||
          parser.parseRSquare())
        return failure();
    } else {
      attributes.push_back(mlir::acc::DeviceTypeAttr::get(
          parser.getContext(), mlir::acc::DeviceType::None));
    }
  } while (succeeded(parser.parseOptionalComma()));
 
  llvm::SmallVector<mlir::Attribute> arrayAttr(attributes.begin(),
                                               attributes.end());
  deviceTypes = ArrayAttr::get(parser.getContext(), arrayAttr);
  segments = DenseI32ArrayAttr::get(parser.getContext(), seg);
 
  return success();
}
 
static void printSingleDeviceType(mlir::OpAsmPrinter &p, mlir::Attribute attr) {
  auto deviceTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>(attr);
  if (deviceTypeAttr.getValue() != mlir::acc::DeviceType::None)
    p << " [" << attr << "]";
}
 
static void printNumGangs(mlir::OpAsmPrinter &p, mlir::Operation *op,
                          mlir::OperandRange operands, mlir::TypeRange types,
                          std::optional<mlir::ArrayAttr> deviceTypes,
                          std::optional<mlir::DenseI32ArrayAttr> segments) {
  unsigned opIdx = 0;
  llvm::interleaveComma(llvm::enumerate(*deviceTypes), p, [&](auto it) {
    p << "{";
    llvm::interleaveComma(
        llvm::seq<int32_t>(0, (*segments)[it.index()]), p, [&](auto it) {
          p << operands[opIdx] << " : " << operands[opIdx].getType();
          ++opIdx;
        });
    p << "}";
    printSingleDeviceType(p, it.value());
  });
}
 
static ParseResult parseDeviceTypeOperandsWithSegment(
    mlir::OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types, mlir::ArrayAttr &deviceTypes,
    mlir::DenseI32ArrayAttr &segments) {
  llvm::SmallVector<DeviceTypeAttr> attributes;
  llvm::SmallVector<int32_t> seg;
 
  do {
    if (failed(parser.parseLBrace()))
      return failure();
 
    int32_t crtOperandsSize = operands.size();
 
    if (failed(parser.parseCommaSeparatedList(
            mlir::AsmParser::Delimiter::None, [&]() {
              if (parser.parseOperand(operands.emplace_back()) ||
                  parser.parseColonType(types.emplace_back()))
                return failure();
              return success();
            })))
      return failure();
 
    seg.push_back(operands.size() - crtOperandsSize);
 
    if (failed(parser.parseRBrace()))
      return failure();
 
    if (succeeded(parser.parseOptionalLSquare())) {
      if (parser.parseAttribute(attributes.emplace_back()) ||
          parser.parseRSquare())
        return failure();
    } else {
      attributes.push_back(mlir::acc::DeviceTypeAttr::get(
          parser.getContext(), mlir::acc::DeviceType::None));
    }
  } while (succeeded(parser.parseOptionalComma()));
 
  llvm::SmallVector<mlir::Attribute> arrayAttr(attributes.begin(),
                                               attributes.end());
  deviceTypes = ArrayAttr::get(parser.getContext(), arrayAttr);
  segments = DenseI32ArrayAttr::get(parser.getContext(), seg);
 
  return success();
}
 
static void printDeviceTypeOperandsWithSegment(
    mlir::OpAsmPrinter &p, mlir::Operation *op, mlir::OperandRange operands,
    mlir::TypeRange types, std::optional<mlir::ArrayAttr> deviceTypes,
    std::optional<mlir::DenseI32ArrayAttr> segments) {
  unsigned opIdx = 0;
  llvm::interleaveComma(llvm::enumerate(*deviceTypes), p, [&](auto it) {
    p << "{";
    llvm::interleaveComma(
        llvm::seq<int32_t>(0, (*segments)[it.index()]), p, [&](auto it) {
          p << operands[opIdx] << " : " << operands[opIdx].getType();
          ++opIdx;
        });
    p << "}";
    printSingleDeviceType(p, it.value());
  });
}
 
static ParseResult parseWaitClause(
    mlir::OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types, mlir::ArrayAttr &deviceTypes,
    mlir::DenseI32ArrayAttr &segments, mlir::ArrayAttr &hasDevNum,
    mlir::ArrayAttr &keywordOnly) {
  llvm::SmallVector<mlir::Attribute> deviceTypeAttrs, keywordAttrs, devnum;
  llvm::SmallVector<int32_t> seg;
 
  bool needCommaBeforeOperands = false;
 
  // Keyword only
  if (failed(parser.parseOptionalLParen())) {
    keywordAttrs.push_back(mlir::acc::DeviceTypeAttr::get(
        parser.getContext(), mlir::acc::DeviceType::None));
    keywordOnly = ArrayAttr::get(parser.getContext(), keywordAttrs);
    return success();
  }
 
  // Parse keyword only attributes
  if (succeeded(parser.parseOptionalLSquare())) {
    if (failed(parser.parseCommaSeparatedList([&]() {
          if (parser.parseAttribute(keywordAttrs.emplace_back()))
            return failure();
          return success();
        })))
      return failure();
    if (parser.parseRSquare())
      return failure();
    needCommaBeforeOperands = true;
  }
 
  if (needCommaBeforeOperands && failed(parser.parseComma()))
    return failure();
 
  do {
    if (failed(parser.parseLBrace()))
      return failure();
 
    int32_t crtOperandsSize = operands.size();
 
    if (succeeded(parser.parseOptionalKeyword("devnum"))) {
      if (failed(parser.parseColon()))
        return failure();
      devnum.push_back(BoolAttr::get(parser.getContext(), true));
    } else {
      devnum.push_back(BoolAttr::get(parser.getContext(), false));
    }
 
    if (failed(parser.parseCommaSeparatedList(
            mlir::AsmParser::Delimiter::None, [&]() {
              if (parser.parseOperand(operands.emplace_back()) ||
                  parser.parseColonType(types.emplace_back()))
                return failure();
              return success();
            })))
      return failure();
 
    seg.push_back(operands.size() - crtOperandsSize);
 
    if (failed(parser.parseRBrace()))
      return failure();
 
    if (succeeded(parser.parseOptionalLSquare())) {
      if (parser.parseAttribute(deviceTypeAttrs.emplace_back()) ||
          parser.parseRSquare())
        return failure();
    } else {
      deviceTypeAttrs.push_back(mlir::acc::DeviceTypeAttr::get(
          parser.getContext(), mlir::acc::DeviceType::None));
    }
  } while (succeeded(parser.parseOptionalComma()));
 
  if (failed(parser.parseRParen()))
    return failure();
 
  deviceTypes = ArrayAttr::get(parser.getContext(), deviceTypeAttrs);
  keywordOnly = ArrayAttr::get(parser.getContext(), keywordAttrs);
  segments = DenseI32ArrayAttr::get(parser.getContext(), seg);
  hasDevNum = ArrayAttr::get(parser.getContext(), devnum);
 
  return success();
}
 
static bool hasOnlyDeviceTypeNone(std::optional<mlir::ArrayAttr> attrs) {
  if (!hasDeviceTypeValues(attrs))
    return false;
  if (attrs->size() != 1)
    return false;
  if (auto deviceTypeAttr =
          mlir::dyn_cast<mlir::acc::DeviceTypeAttr>((*attrs)[0]))
    return deviceTypeAttr.getValue() == mlir::acc::DeviceType::None;
  return false;
}
 
static void printWaitClause(mlir::OpAsmPrinter &p, mlir::Operation *op,
                            mlir::OperandRange operands, mlir::TypeRange types,
                            std::optional<mlir::ArrayAttr> deviceTypes,
                            std::optional<mlir::DenseI32ArrayAttr> segments,
                            std::optional<mlir::ArrayAttr> hasDevNum,
                            std::optional<mlir::ArrayAttr> keywordOnly) {
 
  if (operands.begin() == operands.end() && hasOnlyDeviceTypeNone(keywordOnly))
    return;
 
  p << "(";
 
  printDeviceTypes(p, keywordOnly);
  if (hasDeviceTypeValues(keywordOnly) && hasDeviceTypeValues(deviceTypes))
    p << ", ";
 
  if (hasDeviceTypeValues(deviceTypes)) {
    unsigned opIdx = 0;
    llvm::interleaveComma(llvm::enumerate(*deviceTypes), p, [&](auto it) {
      p << "{";
      auto boolAttr = mlir::dyn_cast<mlir::BoolAttr>((*hasDevNum)[it.index()]);
      if (boolAttr && boolAttr.getValue())
        p << "devnum: ";
      llvm::interleaveComma(
          llvm::seq<int32_t>(0, (*segments)[it.index()]), p, [&](auto it) {
            p << operands[opIdx] << " : " << operands[opIdx].getType();
            ++opIdx;
          });
      p << "}";
      printSingleDeviceType(p, it.value());
    });
  }
 
  p << ")";
}
 
static ParseResult parseDeviceTypeOperands(
    mlir::OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types, mlir::ArrayAttr &deviceTypes) {
  llvm::SmallVector<DeviceTypeAttr> attributes;
  if (failed(parser.parseCommaSeparatedList([&]() {
        if (parser.parseOperand(operands.emplace_back()) ||
            parser.parseColonType(types.emplace_back()))
          return failure();
        if (succeeded(parser.parseOptionalLSquare())) {
          if (parser.parseAttribute(attributes.emplace_back()) ||
              parser.parseRSquare())
            return failure();
        } else {
          attributes.push_back(mlir::acc::DeviceTypeAttr::get(
              parser.getContext(), mlir::acc::DeviceType::None));
        }
        return success();
      })))
    return failure();
  llvm::SmallVector<mlir::Attribute> arrayAttr(attributes.begin(),
                                               attributes.end());
  deviceTypes = ArrayAttr::get(parser.getContext(), arrayAttr);
  return success();
}
 
static void
printDeviceTypeOperands(mlir::OpAsmPrinter &p, mlir::Operation *op,
                        mlir::OperandRange operands, mlir::TypeRange types,
                        std::optional<mlir::ArrayAttr> deviceTypes) {
  if (!hasDeviceTypeValues(deviceTypes))
    return;
  llvm::interleaveComma(llvm::zip(*deviceTypes, operands), p, [&](auto it) {
    p << std::get<1>(it) << " : " << std::get<1>(it).getType();
    printSingleDeviceType(p, std::get<0>(it));
  });
}
 
static ParseResult parseDeviceTypeOperandsWithKeywordOnly(
    mlir::OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types, mlir::ArrayAttr &deviceTypes,
    mlir::ArrayAttr &keywordOnlyDeviceType) {
 
  llvm::SmallVector<mlir::Attribute> keywordOnlyDeviceTypeAttributes;
  bool needCommaBeforeOperands = false;
 
  if (failed(parser.parseOptionalLParen())) {
    // Keyword only
    keywordOnlyDeviceTypeAttributes.push_back(mlir::acc::DeviceTypeAttr::get(
        parser.getContext(), mlir::acc::DeviceType::None));
    keywordOnlyDeviceType =
        ArrayAttr::get(parser.getContext(), keywordOnlyDeviceTypeAttributes);
    return success();
  }
 
  // Parse keyword only attributes
  if (succeeded(parser.parseOptionalLSquare())) {
    // Parse keyword only attributes
    if (failed(parser.parseCommaSeparatedList([&]() {
          if (parser.parseAttribute(
                  keywordOnlyDeviceTypeAttributes.emplace_back()))
            return failure();
          return success();
        })))
      return failure();
    if (parser.parseRSquare())
      return failure();
    keywordOnlyDeviceType =
        ArrayAttr::get(parser.getContext(), keywordOnlyDeviceTypeAttributes);
    needCommaBeforeOperands = true;
  }
 
  if (needCommaBeforeOperands) {
    if (succeeded(parser.parseOptionalRParen()))
      return success();
    if (failed(parser.parseComma()))
      return failure();
  }
 
  llvm::SmallVector<DeviceTypeAttr> attributes;
  if (failed(parser.parseCommaSeparatedList([&]() {
        if (parser.parseOperand(operands.emplace_back()) ||
            parser.parseColonType(types.emplace_back()))
          return failure();
        if (succeeded(parser.parseOptionalLSquare())) {
          if (parser.parseAttribute(attributes.emplace_back()) ||
              parser.parseRSquare())
            return failure();
        } else {
          attributes.push_back(mlir::acc::DeviceTypeAttr::get(
              parser.getContext(), mlir::acc::DeviceType::None));
        }
        return success();
      })))
    return failure();
 
  if (failed(parser.parseRParen()))
    return failure();
 
  llvm::SmallVector<mlir::Attribute> arrayAttr(attributes.begin(),
                                               attributes.end());
  deviceTypes = ArrayAttr::get(parser.getContext(), arrayAttr);
  return success();
}
 
static void printDeviceTypeOperandsWithKeywordOnly(
    mlir::OpAsmPrinter &p, mlir::Operation *op, mlir::OperandRange operands,
    mlir::TypeRange types, std::optional<mlir::ArrayAttr> deviceTypes,
    std::optional<mlir::ArrayAttr> keywordOnlyDeviceTypes) {
 
  if (operands.begin() == operands.end() &&
      hasOnlyDeviceTypeNone(keywordOnlyDeviceTypes)) {
    return;
  }
 
  p << "(";
  printDeviceTypes(p, keywordOnlyDeviceTypes);
  if (hasDeviceTypeValues(keywordOnlyDeviceTypes) &&
      hasDeviceTypeValues(deviceTypes))
    p << ", ";
  printDeviceTypeOperands(p, op, operands, types, deviceTypes);
  p << ")";
}
 
static ParseResult parseOperandWithKeywordOnly(
    mlir::OpAsmParser &parser,
    std::optional<OpAsmParser::UnresolvedOperand> &operand,
    mlir::Type &operandType, mlir::UnitAttr &attr) {
  // Keyword only
  if (failed(parser.parseOptionalLParen())) {
    attr = mlir::UnitAttr::get(parser.getContext());
    return success();
  }
 
  OpAsmParser::UnresolvedOperand op;
  if (failed(parser.parseOperand(op)))
    return failure();
  operand = op;
  if (failed(parser.parseColon()))
    return failure();
  if (failed(parser.parseType(operandType)))
    return failure();
  if (failed(parser.parseRParen()))
    return failure();
 
  return success();
}
 
static void printOperandWithKeywordOnly(mlir::OpAsmPrinter &p,
                                        mlir::Operation *op,
                                        std::optional<mlir::Value> operand,
                                        mlir::Type operandType,
                                        mlir::UnitAttr attr) {
  if (attr)
    return;
 
  p << "(";
  p.printOperand(*operand);
  p << " : ";
  p.printType(operandType);
  p << ")";
}
 
static ParseResult parseOperandsWithKeywordOnly(
    mlir::OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types, mlir::UnitAttr &attr) {
  // Keyword only
  if (failed(parser.parseOptionalLParen())) {
    attr = mlir::UnitAttr::get(parser.getContext());
    return success();
  }
 
  if (failed(parser.parseCommaSeparatedList([&]() {
        if (parser.parseOperand(operands.emplace_back()))
          return failure();
        return success();
      })))
    return failure();
  if (failed(parser.parseColon()))
    return failure();
  if (failed(parser.parseCommaSeparatedList([&]() {
        if (parser.parseType(types.emplace_back()))
          return failure();
        return success();
      })))
    return failure();
  if (failed(parser.parseRParen()))
    return failure();
 
  return success();
}
 
static void printOperandsWithKeywordOnly(mlir::OpAsmPrinter &p,
                                         mlir::Operation *op,
                                         mlir::OperandRange operands,
                                         mlir::TypeRange types,
                                         mlir::UnitAttr attr) {
  if (attr)
    return;
 
  p << "(";
  llvm::interleaveComma(operands, p, [&](auto it) { p << it; });
  p << " : ";
  llvm::interleaveComma(types, p, [&](auto it) { p << it; });
  p << ")";
}
 
static ParseResult
parseCombinedConstructsLoop(mlir::OpAsmParser &parser,
                            mlir::acc::CombinedConstructsTypeAttr &attr) {
  if (succeeded(parser.parseOptionalKeyword("kernels"))) {
    attr = mlir::acc::CombinedConstructsTypeAttr::get(
        parser.getContext(), mlir::acc::CombinedConstructsType::KernelsLoop);
  } else if (succeeded(parser.parseOptionalKeyword("parallel"))) {
    attr = mlir::acc::CombinedConstructsTypeAttr::get(
        parser.getContext(), mlir::acc::CombinedConstructsType::ParallelLoop);
  } else if (succeeded(parser.parseOptionalKeyword("serial"))) {
    attr = mlir::acc::CombinedConstructsTypeAttr::get(
        parser.getContext(), mlir::acc::CombinedConstructsType::SerialLoop);
  } else {
    parser.emitError(parser.getCurrentLocation(),
                     "expected compute construct name");
    return failure();
  }
  return success();
}
 
static void
printCombinedConstructsLoop(mlir::OpAsmPrinter &p, mlir::Operation *op,
                            mlir::acc::CombinedConstructsTypeAttr attr) {
  if (attr) {
    switch (attr.getValue()) {
    case mlir::acc::CombinedConstructsType::KernelsLoop:
      p << "kernels";
      break;
    case mlir::acc::CombinedConstructsType::ParallelLoop:
      p << "parallel";
      break;
    case mlir::acc::CombinedConstructsType::SerialLoop:
      p << "serial";
      break;
    };
  }
}
 
//===----------------------------------------------------------------------===//
// SerialOp
//===----------------------------------------------------------------------===//
 
unsigned SerialOp::getNumDataOperands() {
  return getReductionOperands().size() + getPrivateOperands().size() +
         getFirstprivateOperands().size() + getDataClauseOperands().size();
}
 
Value SerialOp::getDataOperand(unsigned i) {
  unsigned numOptional = getAsyncOperands().size();
  numOptional += getIfCond() ? 1 : 0;
  numOptional += getSelfCond() ? 1 : 0;
  return getOperand(getWaitOperands().size() + numOptional + i);
}
 
bool acc::SerialOp::hasAsyncOnly() {
  return hasAsyncOnly(mlir::acc::DeviceType::None);
}
 
bool acc::SerialOp::hasAsyncOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getAsyncOnly(), deviceType);
}
 
mlir::Value acc::SerialOp::getAsyncValue() {
  return getAsyncValue(mlir::acc::DeviceType::None);
}
 
mlir::Value acc::SerialOp::getAsyncValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getAsyncOperandsDeviceType(),
                                     getAsyncOperands(), deviceType);
}
 
bool acc::SerialOp::hasWaitOnly() {
  return hasWaitOnly(mlir::acc::DeviceType::None);
}
 
bool acc::SerialOp::hasWaitOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWaitOnly(), deviceType);
}
 
mlir::Operation::operand_range SerialOp::getWaitValues() {
  return getWaitValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
SerialOp::getWaitValues(mlir::acc::DeviceType deviceType) {
  return getWaitValuesWithoutDevnum(
      getWaitOperandsDeviceType(), getWaitOperands(), getWaitOperandsSegments(),
      getHasWaitDevnum(), deviceType);
}
 
mlir::Value SerialOp::getWaitDevnum() {
  return getWaitDevnum(mlir::acc::DeviceType::None);
}
 
mlir::Value SerialOp::getWaitDevnum(mlir::acc::DeviceType deviceType) {
  return getWaitDevnumValue(getWaitOperandsDeviceType(), getWaitOperands(),
                            getWaitOperandsSegments(), getHasWaitDevnum(),
                            deviceType);
}
 
LogicalResult acc::SerialOp::verify() {
  if (failed(checkPrivateOperands<mlir::acc::PrivateOp,
                                  mlir::acc::PrivateRecipeOp>(
          *this, getPrivateOperands(), "private")))
    return failure();
  if (failed(checkPrivateOperands<mlir::acc::FirstprivateOp,
                                  mlir::acc::FirstprivateRecipeOp>(
          *this, getFirstprivateOperands(), "firstprivate")))
    return failure();
  if (failed(checkPrivateOperands<mlir::acc::ReductionOp,
                                  mlir::acc::ReductionRecipeOp>(
          *this, getReductionOperands(), "reduction")))
    return failure();
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getWaitOperands(), getWaitOperandsSegmentsAttr(),
          getWaitOperandsDeviceTypeAttr(), "wait")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getAsyncOperands(),
                                        getAsyncOperandsDeviceTypeAttr(),
                                        "async")))
    return failure();
 
  if (failed(checkWaitAndAsyncConflict<acc::SerialOp>(*this)))
    return failure();
 
  return checkDataOperands<acc::SerialOp>(*this, getDataClauseOperands());
}
 
void acc::SerialOp::addAsyncOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOnlyAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOnlyAttr(), effectiveDeviceTypes));
}
 
void acc::SerialOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getAsyncOperandsMutable()));
}
 
void acc::SerialOp::addWaitOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWaitOnlyAttr(addDeviceTypeAffectedOperandHelper(context, getWaitOnlyAttr(),
                                                     effectiveDeviceTypes));
}
void acc::SerialOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
 
  llvm::SmallVector<int32_t> segments;
  if (getWaitOperandsSegments())
    llvm::copy(*getWaitOperandsSegments(), std::back_inserter(segments));
 
  setWaitOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getWaitOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getWaitOperandsMutable(), segments));
  setWaitOperandsSegments(segments);
 
  llvm::SmallVector<mlir::Attribute> hasDevnums;
  if (getHasWaitDevnumAttr())
    llvm::copy(getHasWaitDevnumAttr(), std::back_inserter(hasDevnums));
  hasDevnums.insert(
      hasDevnums.end(),
      std::max(effectiveDeviceTypes.size(), static_cast<size_t>(1)),
      mlir::BoolAttr::get(context, hasDevnum));
  setHasWaitDevnumAttr(mlir::ArrayAttr::get(context, hasDevnums));
}
 
void acc::SerialOp::addPrivatization(MLIRContext *context,
                                     mlir::acc::PrivateOp op,
                                     mlir::acc::PrivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getPrivateOperandsMutable().append(op.getResult());
}
 
void acc::SerialOp::addFirstPrivatization(
    MLIRContext *context, mlir::acc::FirstprivateOp op,
    mlir::acc::FirstprivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getFirstprivateOperandsMutable().append(op.getResult());
}
 
void acc::SerialOp::addReduction(MLIRContext *context,
                                 mlir::acc::ReductionOp op,
                                 mlir::acc::ReductionRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getReductionOperandsMutable().append(op.getResult());
}
 
//===----------------------------------------------------------------------===//
// KernelsOp
//===----------------------------------------------------------------------===//
 
unsigned KernelsOp::getNumDataOperands() {
  return getDataClauseOperands().size();
}
 
Value KernelsOp::getDataOperand(unsigned i) {
  unsigned numOptional = getAsyncOperands().size();
  numOptional += getWaitOperands().size();
  numOptional += getNumGangs().size();
  numOptional += getNumWorkers().size();
  numOptional += getVectorLength().size();
  numOptional += getIfCond() ? 1 : 0;
  numOptional += getSelfCond() ? 1 : 0;
  return getOperand(numOptional + i);
}
 
bool acc::KernelsOp::hasAsyncOnly() {
  return hasAsyncOnly(mlir::acc::DeviceType::None);
}
 
bool acc::KernelsOp::hasAsyncOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getAsyncOnly(), deviceType);
}
 
mlir::Value acc::KernelsOp::getAsyncValue() {
  return getAsyncValue(mlir::acc::DeviceType::None);
}
 
mlir::Value acc::KernelsOp::getAsyncValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getAsyncOperandsDeviceType(),
                                     getAsyncOperands(), deviceType);
}
 
mlir::Value acc::KernelsOp::getNumWorkersValue() {
  return getNumWorkersValue(mlir::acc::DeviceType::None);
}
 
mlir::Value
acc::KernelsOp::getNumWorkersValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getNumWorkersDeviceType(), getNumWorkers(),
                                     deviceType);
}
 
mlir::Value acc::KernelsOp::getVectorLengthValue() {
  return getVectorLengthValue(mlir::acc::DeviceType::None);
}
 
mlir::Value
acc::KernelsOp::getVectorLengthValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getVectorLengthDeviceType(),
                                     getVectorLength(), deviceType);
}
 
mlir::Operation::operand_range KernelsOp::getNumGangsValues() {
  return getNumGangsValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
KernelsOp::getNumGangsValues(mlir::acc::DeviceType deviceType) {
  return getValuesFromSegments(getNumGangsDeviceType(), getNumGangs(),
                               getNumGangsSegments(), deviceType);
}
 
bool acc::KernelsOp::hasAnyGangWorkerVector(mlir::acc::DeviceType deviceType) {
  return hasAnyGangWorkerVectorForDeviceType(
      getNumGangsDeviceType(), getNumGangs(), getNumGangsSegments(),
      getNumWorkersDeviceType(), getNumWorkers(), getVectorLengthDeviceType(),
      getVectorLength(), deviceType);
}
 
bool acc::KernelsOp::isEffectivelySerial() {
  return isGangWorkerVectorAllOne(*this);
}
 
bool acc::KernelsOp::hasWaitOnly() {
  return hasWaitOnly(mlir::acc::DeviceType::None);
}
 
bool acc::KernelsOp::hasWaitOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWaitOnly(), deviceType);
}
 
mlir::Operation::operand_range KernelsOp::getWaitValues() {
  return getWaitValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
KernelsOp::getWaitValues(mlir::acc::DeviceType deviceType) {
  return getWaitValuesWithoutDevnum(
      getWaitOperandsDeviceType(), getWaitOperands(), getWaitOperandsSegments(),
      getHasWaitDevnum(), deviceType);
}
 
mlir::Value KernelsOp::getWaitDevnum() {
  return getWaitDevnum(mlir::acc::DeviceType::None);
}
 
mlir::Value KernelsOp::getWaitDevnum(mlir::acc::DeviceType deviceType) {
  return getWaitDevnumValue(getWaitOperandsDeviceType(), getWaitOperands(),
                            getWaitOperandsSegments(), getHasWaitDevnum(),
                            deviceType);
}
 
LogicalResult acc::KernelsOp::verify() {
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getNumGangs(), getNumGangsSegmentsAttr(),
          getNumGangsDeviceTypeAttr(), "num_gangs", 3)))
    return failure();
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getWaitOperands(), getWaitOperandsSegmentsAttr(),
          getWaitOperandsDeviceTypeAttr(), "wait")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getNumWorkers(),
                                        getNumWorkersDeviceTypeAttr(),
                                        "num_workers")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getVectorLength(),
                                        getVectorLengthDeviceTypeAttr(),
                                        "vector_length")))
    return failure();
 
  if (failed(verifyDeviceTypeCountMatch(*this, getAsyncOperands(),
                                        getAsyncOperandsDeviceTypeAttr(),
                                        "async")))
    return failure();
 
  if (failed(checkWaitAndAsyncConflict<acc::KernelsOp>(*this)))
    return failure();
 
  return checkDataOperands<acc::KernelsOp>(*this, getDataClauseOperands());
}
 
void acc::KernelsOp::addPrivatization(MLIRContext *context,
                                      mlir::acc::PrivateOp op,
                                      mlir::acc::PrivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getPrivateOperandsMutable().append(op.getResult());
}
 
void acc::KernelsOp::addFirstPrivatization(
    MLIRContext *context, mlir::acc::FirstprivateOp op,
    mlir::acc::FirstprivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getFirstprivateOperandsMutable().append(op.getResult());
}
 
void acc::KernelsOp::addReduction(MLIRContext *context,
                                  mlir::acc::ReductionOp op,
                                  mlir::acc::ReductionRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getReductionOperandsMutable().append(op.getResult());
}
 
void acc::KernelsOp::addNumWorkersOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setNumWorkersDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getNumWorkersDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getNumWorkersMutable()));
}
 
void acc::KernelsOp::addVectorLengthOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setVectorLengthDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getVectorLengthDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getVectorLengthMutable()));
}
void acc::KernelsOp::addAsyncOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOnlyAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOnlyAttr(), effectiveDeviceTypes));
}
 
void acc::KernelsOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getAsyncOperandsMutable()));
}
 
void acc::KernelsOp::addNumGangsOperands(
    MLIRContext *context, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  llvm::SmallVector<int32_t> segments;
  if (getNumGangsSegmentsAttr())
    llvm::copy(*getNumGangsSegments(), std::back_inserter(segments));
 
  setNumGangsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getNumGangsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getNumGangsMutable(), segments));
 
  setNumGangsSegments(segments);
}
 
void acc::KernelsOp::addWaitOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWaitOnlyAttr(addDeviceTypeAffectedOperandHelper(context, getWaitOnlyAttr(),
                                                     effectiveDeviceTypes));
}
void acc::KernelsOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
 
  llvm::SmallVector<int32_t> segments;
  if (getWaitOperandsSegments())
    llvm::copy(*getWaitOperandsSegments(), std::back_inserter(segments));
 
  setWaitOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getWaitOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getWaitOperandsMutable(), segments));
  setWaitOperandsSegments(segments);
 
  llvm::SmallVector<mlir::Attribute> hasDevnums;
  if (getHasWaitDevnumAttr())
    llvm::copy(getHasWaitDevnumAttr(), std::back_inserter(hasDevnums));
  hasDevnums.insert(
      hasDevnums.end(),
      std::max(effectiveDeviceTypes.size(), static_cast<size_t>(1)),
      mlir::BoolAttr::get(context, hasDevnum));
  setHasWaitDevnumAttr(mlir::ArrayAttr::get(context, hasDevnums));
}
 
//===----------------------------------------------------------------------===//
// HostDataOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::HostDataOp::verify() {
  if (getDataClauseOperands().empty())
    return emitError("at least one operand must appear on the host_data "
                     "operation");
 
  llvm::SmallPtrSet<mlir::Value, 4> seenVars;
  for (mlir::Value operand : getDataClauseOperands()) {
    auto useDeviceOp =
        mlir::dyn_cast_if_present<acc::UseDeviceOp>(operand.getDefiningOp());
    if (!useDeviceOp)
      return emitError("expect data entry operation as defining op");
 
    // Check for duplicate use_device clauses
    if (!seenVars.insert(useDeviceOp.getVar()).second)
      return emitError("duplicate use_device variable");
  }
  return success();
}
 
void acc::HostDataOp::getCanonicalizationPatterns(RewritePatternSet &results,
                                                  MLIRContext *context) {
  results.add<RemoveConstantIfConditionWithRegion<HostDataOp>>(context);
}
 
//===----------------------------------------------------------------------===//
// LoopOp
//===----------------------------------------------------------------------===//
 
static ParseResult parseGangValue(
    OpAsmParser &parser, llvm::StringRef keyword,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &operands,
    llvm::SmallVectorImpl<Type> &types,
    llvm::SmallVector<GangArgTypeAttr> &attributes, GangArgTypeAttr gangArgType,
    bool &needCommaBetweenValues, bool &newValue) {
  if (succeeded(parser.parseOptionalKeyword(keyword))) {
    if (parser.parseEqual())
      return failure();
    if (parser.parseOperand(operands.emplace_back()) ||
        parser.parseColonType(types.emplace_back()))
      return failure();
    attributes.push_back(gangArgType);
    needCommaBetweenValues = true;
    newValue = true;
  }
  return success();
}
 
static ParseResult parseGangClause(
    OpAsmParser &parser,
    llvm::SmallVectorImpl<mlir::OpAsmParser::UnresolvedOperand> &gangOperands,
    llvm::SmallVectorImpl<Type> &gangOperandsType, mlir::ArrayAttr &gangArgType,
    mlir::ArrayAttr &deviceType, mlir::DenseI32ArrayAttr &segments,
    mlir::ArrayAttr &gangOnlyDeviceType) {
  llvm::SmallVector<GangArgTypeAttr> gangArgTypeAttributes;
  llvm::SmallVector<mlir::Attribute> deviceTypeAttributes;
  llvm::SmallVector<mlir::Attribute> gangOnlyDeviceTypeAttributes;
  llvm::SmallVector<int32_t> seg;
  bool needCommaBetweenValues = false;
  bool needCommaBeforeOperands = false;
 
  if (failed(parser.parseOptionalLParen())) {
    // Gang only keyword
    gangOnlyDeviceTypeAttributes.push_back(mlir::acc::DeviceTypeAttr::get(
        parser.getContext(), mlir::acc::DeviceType::None));
    gangOnlyDeviceType =
        ArrayAttr::get(parser.getContext(), gangOnlyDeviceTypeAttributes);
    return success();
  }
 
  // Parse gang only attributes
  if (succeeded(parser.parseOptionalLSquare())) {
    // Parse gang only attributes
    if (failed(parser.parseCommaSeparatedList([&]() {
          if (parser.parseAttribute(
                  gangOnlyDeviceTypeAttributes.emplace_back()))
            return failure();
          return success();
        })))
      return failure();
    if (parser.parseRSquare())
      return failure();
    needCommaBeforeOperands = true;
  }
 
  auto argNum = mlir::acc::GangArgTypeAttr::get(parser.getContext(),
                                                mlir::acc::GangArgType::Num);
  auto argDim = mlir::acc::GangArgTypeAttr::get(parser.getContext(),
                                                mlir::acc::GangArgType::Dim);
  auto argStatic = mlir::acc::GangArgTypeAttr::get(
      parser.getContext(), mlir::acc::GangArgType::Static);
 
  do {
    if (needCommaBeforeOperands) {
      needCommaBeforeOperands = false;
      continue;
    }
 
    if (failed(parser.parseLBrace()))
      return failure();
 
    int32_t crtOperandsSize = gangOperands.size();
    while (true) {
      bool newValue = false;
      bool needValue = false;
      if (needCommaBetweenValues) {
        if (succeeded(parser.parseOptionalComma()))
          needValue = true; // expect a new value after comma.
        else
          break;
      }
 
      if (failed(parseGangValue(parser, LoopOp::getGangNumKeyword(),
                                gangOperands, gangOperandsType,
                                gangArgTypeAttributes, argNum,
                                needCommaBetweenValues, newValue)))
        return failure();
      if (failed(parseGangValue(parser, LoopOp::getGangDimKeyword(),
                                gangOperands, gangOperandsType,
                                gangArgTypeAttributes, argDim,
                                needCommaBetweenValues, newValue)))
        return failure();
      if (failed(parseGangValue(parser, LoopOp::getGangStaticKeyword(),
                                gangOperands, gangOperandsType,
                                gangArgTypeAttributes, argStatic,
                                needCommaBetweenValues, newValue)))
        return failure();
 
      if (!newValue && needValue) {
        parser.emitError(parser.getCurrentLocation(),
                         "new value expected after comma");
        return failure();
      }
 
      if (!newValue)
        break;
    }
 
    if (gangOperands.empty())
      return parser.emitError(
          parser.getCurrentLocation(),
          "expect at least one of num, dim or static values");
 
    if (failed(parser.parseRBrace()))
      return failure();
 
    if (succeeded(parser.parseOptionalLSquare())) {
      if (parser.parseAttribute(deviceTypeAttributes.emplace_back()) ||
          parser.parseRSquare())
        return failure();
    } else {
      deviceTypeAttributes.push_back(mlir::acc::DeviceTypeAttr::get(
          parser.getContext(), mlir::acc::DeviceType::None));
    }
 
    seg.push_back(gangOperands.size() - crtOperandsSize);
 
  } while (succeeded(parser.parseOptionalComma()));
 
  if (failed(parser.parseRParen()))
    return failure();
 
  llvm::SmallVector<mlir::Attribute> arrayAttr(gangArgTypeAttributes.begin(),
                                               gangArgTypeAttributes.end());
  gangArgType = ArrayAttr::get(parser.getContext(), arrayAttr);
  deviceType = ArrayAttr::get(parser.getContext(), deviceTypeAttributes);
 
  llvm::SmallVector<mlir::Attribute> gangOnlyAttr(
      gangOnlyDeviceTypeAttributes.begin(), gangOnlyDeviceTypeAttributes.end());
  gangOnlyDeviceType = ArrayAttr::get(parser.getContext(), gangOnlyAttr);
 
  segments = DenseI32ArrayAttr::get(parser.getContext(), seg);
  return success();
}
 
void printGangClause(OpAsmPrinter &p, Operation *op,
                     mlir::OperandRange operands, mlir::TypeRange types,
                     std::optional<mlir::ArrayAttr> gangArgTypes,
                     std::optional<mlir::ArrayAttr> deviceTypes,
                     std::optional<mlir::DenseI32ArrayAttr> segments,
                     std::optional<mlir::ArrayAttr> gangOnlyDeviceTypes) {
 
  if (operands.begin() == operands.end() &&
      hasOnlyDeviceTypeNone(gangOnlyDeviceTypes)) {
    return;
  }
 
  p << "(";
 
  printDeviceTypes(p, gangOnlyDeviceTypes);
 
  if (hasDeviceTypeValues(gangOnlyDeviceTypes) &&
      hasDeviceTypeValues(deviceTypes))
    p << ", ";
 
  if (hasDeviceTypeValues(deviceTypes)) {
    unsigned opIdx = 0;
    llvm::interleaveComma(llvm::enumerate(*deviceTypes), p, [&](auto it) {
      p << "{";
      llvm::interleaveComma(
          llvm::seq<int32_t>(0, (*segments)[it.index()]), p, [&](auto it) {
            auto gangArgTypeAttr = mlir::dyn_cast<mlir::acc::GangArgTypeAttr>(
                (*gangArgTypes)[opIdx]);
            if (gangArgTypeAttr.getValue() == mlir::acc::GangArgType::Num)
              p << LoopOp::getGangNumKeyword();
            else if (gangArgTypeAttr.getValue() == mlir::acc::GangArgType::Dim)
              p << LoopOp::getGangDimKeyword();
            else if (gangArgTypeAttr.getValue() ==
                     mlir::acc::GangArgType::Static)
              p << LoopOp::getGangStaticKeyword();
            p << "=" << operands[opIdx] << " : " << operands[opIdx].getType();
            ++opIdx;
          });
      p << "}";
      printSingleDeviceType(p, it.value());
    });
  }
  p << ")";
}
 
bool hasDuplicateDeviceTypes(
    std::optional<mlir::ArrayAttr> segments,
    llvm::SmallSet<mlir::acc::DeviceType, 3> &deviceTypes) {
  if (!segments)
    return false;
  for (auto attr : *segments) {
    auto deviceTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>(attr);
    if (!deviceTypes.insert(deviceTypeAttr.getValue()).second)
      return true;
  }
  return false;
}
 
/// Check for duplicates in the DeviceType array attribute.
/// Returns std::nullopt if no duplicates, or the duplicate DeviceType if found.
static std::optional<mlir::acc::DeviceType>
checkDeviceTypes(mlir::ArrayAttr deviceTypes) {
  llvm::SmallSet<mlir::acc::DeviceType, 3> crtDeviceTypes;
  if (!deviceTypes)
    return std::nullopt;
  for (auto attr : deviceTypes) {
    auto deviceTypeAttr =
        mlir::dyn_cast_or_null<mlir::acc::DeviceTypeAttr>(attr);
    if (!deviceTypeAttr)
      return mlir::acc::DeviceType::None;
    if (!crtDeviceTypes.insert(deviceTypeAttr.getValue()).second)
      return deviceTypeAttr.getValue();
  }
  return std::nullopt;
}
 
LogicalResult acc::LoopOp::verify() {
  if (getUpperbound().size() != getStep().size())
    return emitError() << "number of upperbounds expected to be the same as "
                          "number of steps";
 
  if (getUpperbound().size() != getLowerbound().size())
    return emitError() << "number of upperbounds expected to be the same as "
                          "number of lowerbounds";
 
  if (!getUpperbound().empty() && getInclusiveUpperbound() &&
      (getUpperbound().size() != getInclusiveUpperbound()->size()))
    return emitError() << "inclusiveUpperbound size is expected to be the same"
                       << " as upperbound size";
 
  // Check collapse
  if (getCollapseAttr() && !getCollapseDeviceTypeAttr())
    return emitOpError() << "collapse device_type attr must be define when"
                         << " collapse attr is present";
 
  if (getCollapseAttr() && getCollapseDeviceTypeAttr() &&
      getCollapseAttr().getValue().size() !=
          getCollapseDeviceTypeAttr().getValue().size())
    return emitOpError() << "collapse attribute count must match collapse"
                         << " device_type count";
  if (auto duplicateDeviceType = checkDeviceTypes(getCollapseDeviceTypeAttr()))
    return emitOpError() << "duplicate device_type `"
                         << acc::stringifyDeviceType(*duplicateDeviceType)
                         << "` found in collapseDeviceType attribute";
 
  // Check gang
  if (!getGangOperands().empty()) {
    if (!getGangOperandsArgType())
      return emitOpError() << "gangOperandsArgType attribute must be defined"
                           << " when gang operands are present";
 
    if (getGangOperands().size() !=
        getGangOperandsArgTypeAttr().getValue().size())
      return emitOpError() << "gangOperandsArgType attribute count must match"
                           << " gangOperands count";
  }
  if (getGangAttr()) {
    if (auto duplicateDeviceType = checkDeviceTypes(getGangAttr()))
      return emitOpError() << "duplicate device_type `"
                           << acc::stringifyDeviceType(*duplicateDeviceType)
                           << "` found in gang attribute";
  }
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getGangOperands(), getGangOperandsSegmentsAttr(),
          getGangOperandsDeviceTypeAttr(), "gang")))
    return failure();
 
  // Check worker
  if (auto duplicateDeviceType = checkDeviceTypes(getWorkerAttr()))
    return emitOpError() << "duplicate device_type `"
                         << acc::stringifyDeviceType(*duplicateDeviceType)
                         << "` found in worker attribute";
  if (auto duplicateDeviceType =
          checkDeviceTypes(getWorkerNumOperandsDeviceTypeAttr()))
    return emitOpError() << "duplicate device_type `"
                         << acc::stringifyDeviceType(*duplicateDeviceType)
                         << "` found in workerNumOperandsDeviceType attribute";
  if (failed(verifyDeviceTypeCountMatch(*this, getWorkerNumOperands(),
                                        getWorkerNumOperandsDeviceTypeAttr(),
                                        "worker")))
    return failure();
 
  // Check vector
  if (auto duplicateDeviceType = checkDeviceTypes(getVectorAttr()))
    return emitOpError() << "duplicate device_type `"
                         << acc::stringifyDeviceType(*duplicateDeviceType)
                         << "` found in vector attribute";
  if (auto duplicateDeviceType =
          checkDeviceTypes(getVectorOperandsDeviceTypeAttr()))
    return emitOpError() << "duplicate device_type `"
                         << acc::stringifyDeviceType(*duplicateDeviceType)
                         << "` found in vectorOperandsDeviceType attribute";
  if (failed(verifyDeviceTypeCountMatch(*this, getVectorOperands(),
                                        getVectorOperandsDeviceTypeAttr(),
                                        "vector")))
    return failure();
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getTileOperands(), getTileOperandsSegmentsAttr(),
          getTileOperandsDeviceTypeAttr(), "tile")))
    return failure();
 
  // auto, independent and seq attribute are mutually exclusive.
  llvm::SmallSet<mlir::acc::DeviceType, 3> deviceTypes;
  if (hasDuplicateDeviceTypes(getAuto_(), deviceTypes) ||
      hasDuplicateDeviceTypes(getIndependent(), deviceTypes) ||
      hasDuplicateDeviceTypes(getSeq(), deviceTypes)) {
    return emitError() << "only one of auto, independent, seq can be present "
                          "at the same time";
  }
 
  // Check that at least one of auto, independent, or seq is present
  // for the device-independent default clauses.
  auto hasDeviceNone = [](mlir::acc::DeviceTypeAttr attr) -> bool {
    return attr.getValue() == mlir::acc::DeviceType::None;
  };
  bool hasDefaultSeq =
      getSeqAttr()
          ? llvm::any_of(getSeqAttr().getAsRange<mlir::acc::DeviceTypeAttr>(),
                         hasDeviceNone)
          : false;
  bool hasDefaultIndependent =
      getIndependentAttr()
          ? llvm::any_of(
                getIndependentAttr().getAsRange<mlir::acc::DeviceTypeAttr>(),
                hasDeviceNone)
          : false;
  bool hasDefaultAuto =
      getAuto_Attr()
          ? llvm::any_of(getAuto_Attr().getAsRange<mlir::acc::DeviceTypeAttr>(),
                         hasDeviceNone)
          : false;
  if (!hasDefaultSeq && !hasDefaultIndependent && !hasDefaultAuto) {
    return emitError()
           << "at least one of auto, independent, seq must be present";
  }
 
  // Gang, worker and vector are incompatible with seq.
  if (getSeqAttr()) {
    for (auto attr : getSeqAttr()) {
      auto deviceTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>(attr);
      if (hasVector(deviceTypeAttr.getValue()) ||
          getVectorValue(deviceTypeAttr.getValue()) ||
          hasWorker(deviceTypeAttr.getValue()) ||
          getWorkerValue(deviceTypeAttr.getValue()) ||
          hasGang(deviceTypeAttr.getValue()) ||
          getGangValue(mlir::acc::GangArgType::Num,
                       deviceTypeAttr.getValue()) ||
          getGangValue(mlir::acc::GangArgType::Dim,
                       deviceTypeAttr.getValue()) ||
          getGangValue(mlir::acc::GangArgType::Static,
                       deviceTypeAttr.getValue()))
        return emitError() << "gang, worker or vector cannot appear with seq";
    }
  }
 
  if (failed(checkPrivateOperands<mlir::acc::PrivateOp,
                                  mlir::acc::PrivateRecipeOp>(
          *this, getPrivateOperands(), "private")))
    return failure();
 
  if (failed(checkPrivateOperands<mlir::acc::FirstprivateOp,
                                  mlir::acc::FirstprivateRecipeOp>(
          *this, getFirstprivateOperands(), "firstprivate")))
    return failure();
 
  if (failed(checkPrivateOperands<mlir::acc::ReductionOp,
                                  mlir::acc::ReductionRecipeOp>(
          *this, getReductionOperands(), "reduction")))
    return failure();
 
  if (getCombined().has_value() &&
      (getCombined().value() != acc::CombinedConstructsType::ParallelLoop &&
       getCombined().value() != acc::CombinedConstructsType::KernelsLoop &&
       getCombined().value() != acc::CombinedConstructsType::SerialLoop)) {
    return emitError("unexpected combined constructs attribute");
  }
 
  // Check non-empty body().
  if (getRegion().empty())
    return emitError("expected non-empty body.");
 
  if (getUnstructured()) {
    if (!isContainerLike())
      return emitError(
          "unstructured acc.loop must not have induction variables");
  } else if (isContainerLike()) {
    // When it is container-like - it is expected to hold a loop-like operation.
    // Obtain the maximum collapse count - we use this to check that there
    // are enough loops contained.
    uint64_t collapseCount = getCollapseValue().value_or(1);
    if (getCollapseAttr()) {
      for (auto collapseEntry : getCollapseAttr()) {
        auto intAttr = mlir::dyn_cast<IntegerAttr>(collapseEntry);
        if (intAttr.getValue().getZExtValue() > collapseCount)
          collapseCount = intAttr.getValue().getZExtValue();
      }
    }
 
    // We want to check that we find enough loop-like operations inside.
    // PreOrder walk allows us to walk in a breadth-first manner at each nesting
    // level.
    mlir::Operation *expectedParent = this->getOperation();
    bool foundSibling = false;
    getRegion().walk<WalkOrder::PreOrder>([&](mlir::Operation *op) {
      if (mlir::isa<mlir::LoopLikeOpInterface>(op)) {
        // This effectively checks that we are not looking at a sibling loop.
        if (op->getParentOfType<mlir::LoopLikeOpInterface>() !=
            expectedParent) {
          foundSibling = true;
          return mlir::WalkResult::interrupt();
        }
 
        collapseCount--;
        expectedParent = op;
      }
      // We found enough contained loops.
      if (collapseCount == 0)
        return mlir::WalkResult::interrupt();
      return mlir::WalkResult::advance();
    });
 
    if (foundSibling)
      return emitError("found sibling loops inside container-like acc.loop");
    if (collapseCount != 0)
      return emitError("failed to find enough loop-like operations inside "
                       "container-like acc.loop");
  }
 
  return success();
}
 
unsigned LoopOp::getNumDataOperands() {
  return getReductionOperands().size() + getPrivateOperands().size() +
         getFirstprivateOperands().size();
}
 
Value LoopOp::getDataOperand(unsigned i) {
  unsigned numOptional =
      getLowerbound().size() + getUpperbound().size() + getStep().size();
  numOptional += getGangOperands().size();
  numOptional += getVectorOperands().size();
  numOptional += getWorkerNumOperands().size();
  numOptional += getTileOperands().size();
  numOptional += getCacheOperands().size();
  return getOperand(numOptional + i);
}
 
bool LoopOp::hasAuto() { return hasAuto(mlir::acc::DeviceType::None); }
 
bool LoopOp::hasAuto(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getAuto_(), deviceType);
}
 
bool LoopOp::hasIndependent() {
  return hasIndependent(mlir::acc::DeviceType::None);
}
 
bool LoopOp::hasIndependent(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getIndependent(), deviceType);
}
 
bool LoopOp::hasSeq() { return hasSeq(mlir::acc::DeviceType::None); }
 
bool LoopOp::hasSeq(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getSeq(), deviceType);
}
 
mlir::Value LoopOp::getVectorValue() {
  return getVectorValue(mlir::acc::DeviceType::None);
}
 
mlir::Value LoopOp::getVectorValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getVectorOperandsDeviceType(),
                                     getVectorOperands(), deviceType);
}
 
bool LoopOp::hasVector() { return hasVector(mlir::acc::DeviceType::None); }
 
bool LoopOp::hasVector(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getVector(), deviceType);
}
 
mlir::Value LoopOp::getWorkerValue() {
  return getWorkerValue(mlir::acc::DeviceType::None);
}
 
mlir::Value LoopOp::getWorkerValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getWorkerNumOperandsDeviceType(),
                                     getWorkerNumOperands(), deviceType);
}
 
bool LoopOp::hasWorker() { return hasWorker(mlir::acc::DeviceType::None); }
 
bool LoopOp::hasWorker(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWorker(), deviceType);
}
 
mlir::Operation::operand_range LoopOp::getTileValues() {
  return getTileValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
LoopOp::getTileValues(mlir::acc::DeviceType deviceType) {
  return getValuesFromSegments(getTileOperandsDeviceType(), getTileOperands(),
                               getTileOperandsSegments(), deviceType);
}
 
std::optional<int64_t> LoopOp::getCollapseValue() {
  return getCollapseValue(mlir::acc::DeviceType::None);
}
 
std::optional<int64_t>
LoopOp::getCollapseValue(mlir::acc::DeviceType deviceType) {
  if (!getCollapseAttr())
    return std::nullopt;
  if (auto pos = findSegment(getCollapseDeviceTypeAttr(), deviceType)) {
    auto intAttr =
        mlir::dyn_cast<IntegerAttr>(getCollapseAttr().getValue()[*pos]);
    return intAttr.getValue().getZExtValue();
  }
  return std::nullopt;
}
 
mlir::Value LoopOp::getGangValue(mlir::acc::GangArgType gangArgType) {
  return getGangValue(gangArgType, mlir::acc::DeviceType::None);
}
 
mlir::Value LoopOp::getGangValue(mlir::acc::GangArgType gangArgType,
                                 mlir::acc::DeviceType deviceType) {
  if (getGangOperands().empty())
    return {};
  if (auto pos = findSegment(*getGangOperandsDeviceType(), deviceType)) {
    int32_t nbOperandsBefore = 0;
    for (unsigned i = 0; i < *pos; ++i)
      nbOperandsBefore += (*getGangOperandsSegments())[i];
    mlir::Operation::operand_range values =
        getGangOperands()
            .drop_front(nbOperandsBefore)
            .take_front((*getGangOperandsSegments())[*pos]);
 
    int32_t argTypeIdx = nbOperandsBefore;
    for (auto value : values) {
      auto gangArgTypeAttr = mlir::dyn_cast<mlir::acc::GangArgTypeAttr>(
          (*getGangOperandsArgType())[argTypeIdx]);
      if (gangArgTypeAttr.getValue() == gangArgType)
        return value;
      ++argTypeIdx;
    }
  }
  return {};
}
 
bool LoopOp::hasGang() { return hasGang(mlir::acc::DeviceType::None); }
 
bool LoopOp::hasGang(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getGang(), deviceType);
}
 
llvm::SmallVector<mlir::Region *> acc::LoopOp::getLoopRegions() {
  return {&getRegion()};
}
 
/// loop-control ::= `control` `(` ssa-id-and-type-list `)` `=`
/// `(` ssa-id-and-type-list `)` `to` `(` ssa-id-and-type-list `)` `step`
/// `(` ssa-id-and-type-list `)`
/// region
ParseResult
parseLoopControl(OpAsmParser &parser, Region &region,
                 SmallVectorImpl<OpAsmParser::UnresolvedOperand> &lowerbound,
                 SmallVectorImpl<Type> &lowerboundType,
                 SmallVectorImpl<OpAsmParser::UnresolvedOperand> &upperbound,
                 SmallVectorImpl<Type> &upperboundType,
                 SmallVectorImpl<OpAsmParser::UnresolvedOperand> &step,
                 SmallVectorImpl<Type> &stepType) {
 
  SmallVector<OpAsmParser::Argument> inductionVars;
  if (succeeded(
          parser.parseOptionalKeyword(acc::LoopOp::getControlKeyword()))) {
    if (parser.parseLParen() ||
        parser.parseArgumentList(inductionVars, OpAsmParser::Delimiter::None,
                                 /*allowType=*/true) ||
        parser.parseRParen() || parser.parseEqual() || parser.parseLParen() ||
        parser.parseOperandList(lowerbound, inductionVars.size(),
                                OpAsmParser::Delimiter::None) ||
        parser.parseColonTypeList(lowerboundType) || parser.parseRParen() ||
        parser.parseKeyword("to") || parser.parseLParen() ||
        parser.parseOperandList(upperbound, inductionVars.size(),
                                OpAsmParser::Delimiter::None) ||
        parser.parseColonTypeList(upperboundType) || parser.parseRParen() ||
        parser.parseKeyword("step") || parser.parseLParen() ||
        parser.parseOperandList(step, inductionVars.size(),
                                OpAsmParser::Delimiter::None) ||
        parser.parseColonTypeList(stepType) || parser.parseRParen())
      return failure();
  }
  return parser.parseRegion(region, inductionVars);
}
 
void printLoopControl(OpAsmPrinter &p, Operation *op, Region &region,
                      ValueRange lowerbound, TypeRange lowerboundType,
                      ValueRange upperbound, TypeRange upperboundType,
                      ValueRange steps, TypeRange stepType) {
  ValueRange regionArgs = region.front().getArguments();
  if (!regionArgs.empty()) {
    p << acc::LoopOp::getControlKeyword() << "(";
    llvm::interleaveComma(regionArgs, p,
                          [&p](Value v) { p << v << " : " << v.getType(); });
    p << ") = (" << lowerbound << " : " << lowerboundType << ") to ("
      << upperbound << " : " << upperboundType << ") " << " step (" << steps
      << " : " << stepType << ") ";
  }
  p.printRegion(region, /*printEntryBlockArgs=*/false);
}
 
void acc::LoopOp::addSeq(MLIRContext *context,
                         llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setSeqAttr(addDeviceTypeAffectedOperandHelper(context, getSeqAttr(),
                                                effectiveDeviceTypes));
}
 
void acc::LoopOp::addIndependent(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setIndependentAttr(addDeviceTypeAffectedOperandHelper(
      context, getIndependentAttr(), effectiveDeviceTypes));
}
 
void acc::LoopOp::addAuto(MLIRContext *context,
                          llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAuto_Attr(addDeviceTypeAffectedOperandHelper(context, getAuto_Attr(),
                                                  effectiveDeviceTypes));
}
 
void acc::LoopOp::setCollapseForDeviceTypes(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes,
    llvm::APInt value) {
  llvm::SmallVector<mlir::Attribute> newValues;
  llvm::SmallVector<mlir::Attribute> newDeviceTypes;
 
  assert((getCollapseAttr() == nullptr) ==
         (getCollapseDeviceTypeAttr() == nullptr));
  assert(value.getBitWidth() == 64);
 
  if (getCollapseAttr()) {
    for (const auto &existing :
         llvm::zip_equal(getCollapseAttr(), getCollapseDeviceTypeAttr())) {
      newValues.push_back(std::get<0>(existing));
      newDeviceTypes.push_back(std::get<1>(existing));
    }
  }
 
  if (effectiveDeviceTypes.empty()) {
    // If the effective device-types list is empty, this is before there are any
    // being applied by device_type, so this should be added as a 'none'.
    newValues.push_back(
        mlir::IntegerAttr::get(mlir::IntegerType::get(context, 64), value));
    newDeviceTypes.push_back(
        acc::DeviceTypeAttr::get(context, DeviceType::None));
  } else {
    for (DeviceType dt : effectiveDeviceTypes) {
      newValues.push_back(
          mlir::IntegerAttr::get(mlir::IntegerType::get(context, 64), value));
      newDeviceTypes.push_back(acc::DeviceTypeAttr::get(context, dt));
    }
  }
 
  setCollapseAttr(ArrayAttr::get(context, newValues));
  setCollapseDeviceTypeAttr(ArrayAttr::get(context, newDeviceTypes));
}
 
void acc::LoopOp::setTileForDeviceTypes(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes,
    ValueRange values) {
  llvm::SmallVector<int32_t> segments;
  if (getTileOperandsSegments())
    llvm::copy(*getTileOperandsSegments(), std::back_inserter(segments));
 
  setTileOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getTileOperandsDeviceTypeAttr(), effectiveDeviceTypes, values,
      getTileOperandsMutable(), segments));
 
  setTileOperandsSegments(segments);
}
 
void acc::LoopOp::addVectorOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setVectorOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getVectorOperandsDeviceTypeAttr(), effectiveDeviceTypes,
      newValue, getVectorOperandsMutable()));
}
 
void acc::LoopOp::addEmptyVector(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setVectorAttr(addDeviceTypeAffectedOperandHelper(context, getVectorAttr(),
                                                   effectiveDeviceTypes));
}
 
void acc::LoopOp::addWorkerNumOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWorkerNumOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getWorkerNumOperandsDeviceTypeAttr(), effectiveDeviceTypes,
      newValue, getWorkerNumOperandsMutable()));
}
 
void acc::LoopOp::addEmptyWorker(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWorkerAttr(addDeviceTypeAffectedOperandHelper(context, getWorkerAttr(),
                                                   effectiveDeviceTypes));
}
 
void acc::LoopOp::addEmptyGang(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setGangAttr(addDeviceTypeAffectedOperandHelper(context, getGangAttr(),
                                                 effectiveDeviceTypes));
}
 
bool acc::LoopOp::hasParallelismFlag(DeviceType dt) {
  auto hasDevice = [=](DeviceTypeAttr attr) -> bool {
    return attr.getValue() == dt;
  };
  auto testFromArr = [=](ArrayAttr arr) -> bool {
    return llvm::any_of(arr.getAsRange<DeviceTypeAttr>(), hasDevice);
  };
 
  if (ArrayAttr arr = getSeqAttr(); arr && testFromArr(arr))
    return true;
  if (ArrayAttr arr = getIndependentAttr(); arr && testFromArr(arr))
    return true;
  if (ArrayAttr arr = getAuto_Attr(); arr && testFromArr(arr))
    return true;
 
  return false;
}
 
bool acc::LoopOp::hasDefaultGangWorkerVector() {
  return hasAnyGangWorkerVector(DeviceType::None);
}
 
bool acc::LoopOp::hasAnyGangWorkerVector(DeviceType deviceType) {
  return hasVector(deviceType) || getVectorValue(deviceType) ||
         hasWorker(deviceType) || getWorkerValue(deviceType) ||
         hasGang(deviceType) || getGangValue(GangArgType::Num, deviceType) ||
         getGangValue(GangArgType::Dim, deviceType) ||
         getGangValue(GangArgType::Static, deviceType);
}
 
acc::LoopParMode
acc::LoopOp::getDefaultOrDeviceTypeParallelism(DeviceType deviceType) {
  if (hasSeq(deviceType))
    return LoopParMode::loop_seq;
  if (hasAuto(deviceType))
    return LoopParMode::loop_auto;
  if (hasIndependent(deviceType))
    return LoopParMode::loop_independent;
  if (hasSeq())
    return LoopParMode::loop_seq;
  if (hasAuto())
    return LoopParMode::loop_auto;
  assert(hasIndependent() &&
         "loop must have default auto, seq, or independent");
  return LoopParMode::loop_independent;
}
 
void acc::LoopOp::addGangOperands(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes,
    llvm::ArrayRef<GangArgType> argTypes, mlir::ValueRange values) {
  llvm::SmallVector<int32_t> segments;
  if (std::optional<ArrayRef<int32_t>> existingSegments =
          getGangOperandsSegments())
    llvm::copy(*existingSegments, std::back_inserter(segments));
 
  unsigned beforeCount = segments.size();
 
  setGangOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getGangOperandsDeviceTypeAttr(), effectiveDeviceTypes, values,
      getGangOperandsMutable(), segments));
 
  setGangOperandsSegments(segments);
 
  // This is a bit of extra work to make sure we update the 'types' correctly by
  // adding to the types collection the correct number of times. We could
  // potentially add something similar to the
  // addDeviceTypeAffectedOperandHelper, but it seems that would be pretty
  // excessive for a one-off case.
  unsigned numAdded = segments.size() - beforeCount;
 
  if (numAdded > 0) {
    llvm::SmallVector<mlir::Attribute> gangTypes;
    if (getGangOperandsArgTypeAttr())
      llvm::copy(getGangOperandsArgTypeAttr(), std::back_inserter(gangTypes));
 
    for (auto i : llvm::index_range(0u, numAdded)) {
      llvm::transform(argTypes, std::back_inserter(gangTypes),
                      [=](mlir::acc::GangArgType gangTy) {
                        return mlir::acc::GangArgTypeAttr::get(context, gangTy);
                      });
      (void)i;
    }
 
    setGangOperandsArgTypeAttr(mlir::ArrayAttr::get(context, gangTypes));
  }
}
 
void acc::LoopOp::addPrivatization(MLIRContext *context,
                                   mlir::acc::PrivateOp op,
                                   mlir::acc::PrivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getPrivateOperandsMutable().append(op.getResult());
}
 
void acc::LoopOp::addFirstPrivatization(
    MLIRContext *context, mlir::acc::FirstprivateOp op,
    mlir::acc::FirstprivateRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getFirstprivateOperandsMutable().append(op.getResult());
}
 
void acc::LoopOp::addReduction(MLIRContext *context, mlir::acc::ReductionOp op,
                               mlir::acc::ReductionRecipeOp recipe) {
  op.setRecipeAttr(mlir::SymbolRefAttr::get(context, recipe.getSymName()));
  getReductionOperandsMutable().append(op.getResult());
}
 
//===----------------------------------------------------------------------===//
// DataOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::DataOp::verify() {
  // 2.6.5. Data Construct restriction
  // At least one copy, copyin, copyout, create, no_create, present, deviceptr,
  // attach, or default clause must appear on a data construct.
  if (getOperands().empty() && !getDefaultAttr())
    return emitError("at least one operand or the default attribute "
                     "must appear on the data operation");
 
  for (mlir::Value operand : getDataClauseOperands())
    if (isa<BlockArgument>(operand) ||
        !mlir::isa<acc::AttachOp, acc::CopyinOp, acc::CopyoutOp, acc::CreateOp,
                   acc::DeleteOp, acc::DetachOp, acc::DevicePtrOp,
                   acc::GetDevicePtrOp, acc::NoCreateOp, acc::PresentOp,
                   acc::MapInfoOp>(operand.getDefiningOp()))
      return emitError("expect data entry/exit operation or acc.getdeviceptr "
                       "as defining op");
 
  if (failed(checkWaitAndAsyncConflict<acc::DataOp>(*this)))
    return failure();
 
  return success();
}
 
unsigned DataOp::getNumDataOperands() { return getDataClauseOperands().size(); }
 
Value DataOp::getDataOperand(unsigned i) {
  unsigned numOptional = getIfCond() ? 1 : 0;
  numOptional += getAsyncOperands().size() ? 1 : 0;
  numOptional += getWaitOperands().size();
  return getOperand(numOptional + i);
}
 
bool acc::DataOp::hasAsyncOnly() {
  return hasAsyncOnly(mlir::acc::DeviceType::None);
}
 
bool acc::DataOp::hasAsyncOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getAsyncOnly(), deviceType);
}
 
mlir::Value DataOp::getAsyncValue() {
  return getAsyncValue(mlir::acc::DeviceType::None);
}
 
mlir::Value DataOp::getAsyncValue(mlir::acc::DeviceType deviceType) {
  return getValueInDeviceTypeSegment(getAsyncOperandsDeviceType(),
                                     getAsyncOperands(), deviceType);
}
 
bool DataOp::hasWaitOnly() { return hasWaitOnly(mlir::acc::DeviceType::None); }
 
bool DataOp::hasWaitOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWaitOnly(), deviceType);
}
 
mlir::Operation::operand_range DataOp::getWaitValues() {
  return getWaitValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
DataOp::getWaitValues(mlir::acc::DeviceType deviceType) {
  return getWaitValuesWithoutDevnum(
      getWaitOperandsDeviceType(), getWaitOperands(), getWaitOperandsSegments(),
      getHasWaitDevnum(), deviceType);
}
 
mlir::Value DataOp::getWaitDevnum() {
  return getWaitDevnum(mlir::acc::DeviceType::None);
}
 
mlir::Value DataOp::getWaitDevnum(mlir::acc::DeviceType deviceType) {
  return getWaitDevnumValue(getWaitOperandsDeviceType(), getWaitOperands(),
                            getWaitOperandsSegments(), getHasWaitDevnum(),
                            deviceType);
}
 
void acc::DataOp::addAsyncOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOnlyAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOnlyAttr(), effectiveDeviceTypes));
}
 
void acc::DataOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getAsyncOperandsMutable()));
}
 
void acc::DataOp::addWaitOnly(MLIRContext *context,
                              llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWaitOnlyAttr(addDeviceTypeAffectedOperandHelper(context, getWaitOnlyAttr(),
                                                     effectiveDeviceTypes));
}
 
void acc::DataOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
 
  llvm::SmallVector<int32_t> segments;
  if (getWaitOperandsSegments())
    llvm::copy(*getWaitOperandsSegments(), std::back_inserter(segments));
 
  setWaitOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getWaitOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getWaitOperandsMutable(), segments));
  setWaitOperandsSegments(segments);
 
  llvm::SmallVector<mlir::Attribute> hasDevnums;
  if (getHasWaitDevnumAttr())
    llvm::copy(getHasWaitDevnumAttr(), std::back_inserter(hasDevnums));
  hasDevnums.insert(
      hasDevnums.end(),
      std::max(effectiveDeviceTypes.size(), static_cast<size_t>(1)),
      mlir::BoolAttr::get(context, hasDevnum));
  setHasWaitDevnumAttr(mlir::ArrayAttr::get(context, hasDevnums));
}
 
//===----------------------------------------------------------------------===//
// ExitDataOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::ExitDataOp::verify() {
  // 2.6.6. Data Exit Directive restriction
  // At least one copyout, delete, or detach clause must appear on an exit data
  // directive.
  if (getDataClauseOperands().empty())
    return emitError("at least one operand must be present in dataOperands on "
                     "the exit data operation");
 
  // The async attribute represent the async clause without value. Therefore the
  // attribute and operand cannot appear at the same time.
  if (getAsyncOperand() && getAsync())
    return emitError("async attribute cannot appear with asyncOperand");
 
  // The wait attribute represent the wait clause without values. Therefore the
  // attribute and operands cannot appear at the same time.
  if (!getWaitOperands().empty() && getWait())
    return emitError("wait attribute cannot appear with waitOperands");
 
  if (getWaitDevnum() && getWaitOperands().empty())
    return emitError("wait_devnum cannot appear without waitOperands");
 
  return success();
}
 
unsigned ExitDataOp::getNumDataOperands() {
  return getDataClauseOperands().size();
}
 
Value ExitDataOp::getDataOperand(unsigned i) {
  unsigned numOptional = getIfCond() ? 1 : 0;
  numOptional += getAsyncOperand() ? 1 : 0;
  numOptional += getWaitDevnum() ? 1 : 0;
  return getOperand(getWaitOperands().size() + numOptional + i);
}
 
void ExitDataOp::getCanonicalizationPatterns(RewritePatternSet &results,
                                             MLIRContext *context) {
  results.add<RemoveConstantIfCondition<ExitDataOp>>(context);
}
 
void ExitDataOp::addAsyncOnly(MLIRContext *context,
                              llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
  assert(!getAsyncAttr());
  assert(!getAsyncOperand());
 
  setAsyncAttr(mlir::UnitAttr::get(context));
}
 
void ExitDataOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
  assert(!getAsyncAttr());
  assert(!getAsyncOperand());
 
  getAsyncOperandMutable().append(newValue);
}
 
void ExitDataOp::addWaitOnly(MLIRContext *context,
                             llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
 
  if (getWaitAttr())
    return;
 
  setWaitAttr(mlir::UnitAttr::get(context));
 
  getWaitDevnumMutable().clear();
  getWaitOperandsMutable().clear();
}
 
void ExitDataOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
 
  if (getWaitAttr())
    return;
 
  // FIXME: At one point we need to figure out how to support multiple devnums
  // here.  For now, assert.  Eventually we probably want to make dev-num and
  // operands work in 'lock-step', so that getWaitDevnum().size() ==
  // getWaitOperandsMutable().size().
  assert(!getWaitDevnum() && "Merging devnum not yet implemented");
 
  // if hasDevnum, the first value is the devnum. The 'rest' go into the
  // operands list.
  if (hasDevnum) {
    getWaitDevnumMutable().append(newValues.front());
    newValues = newValues.drop_front();
  }
 
  getWaitOperandsMutable().append(newValues);
}
 
//===----------------------------------------------------------------------===//
// EnterDataOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::EnterDataOp::verify() {
  // 2.6.6. Data Enter Directive restriction
  // At least one copyin, create, or attach clause must appear on an enter data
  // directive.
  if (getDataClauseOperands().empty())
    return emitError("at least one operand must be present in dataOperands on "
                     "the enter data operation");
 
  // The async attribute represent the async clause without value. Therefore the
  // attribute and operand cannot appear at the same time.
  if (getAsyncOperand() && getAsync())
    return emitError("async attribute cannot appear with asyncOperand");
 
  // The wait attribute represent the wait clause without values. Therefore the
  // attribute and operands cannot appear at the same time.
  if (!getWaitOperands().empty() && getWait())
    return emitError("wait attribute cannot appear with waitOperands");
 
  if (getWaitDevnum() && getWaitOperands().empty())
    return emitError("wait_devnum cannot appear without waitOperands");
 
  for (mlir::Value operand : getDataClauseOperands())
    if (!mlir::isa<acc::AttachOp, acc::CreateOp, acc::CopyinOp, acc::MapInfoOp>(
            operand.getDefiningOp()))
      return emitError("expect data entry operation as defining op");
 
  return success();
}
 
unsigned EnterDataOp::getNumDataOperands() {
  return getDataClauseOperands().size();
}
 
Value EnterDataOp::getDataOperand(unsigned i) {
  unsigned numOptional = getIfCond() ? 1 : 0;
  numOptional += getAsyncOperand() ? 1 : 0;
  numOptional += getWaitDevnum() ? 1 : 0;
  return getOperand(getWaitOperands().size() + numOptional + i);
}
 
void EnterDataOp::getCanonicalizationPatterns(RewritePatternSet &results,
                                              MLIRContext *context) {
  results.add<RemoveConstantIfCondition<EnterDataOp>>(context);
}
 
void EnterDataOp::addAsyncOnly(
    MLIRContext *context, llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
  assert(!getAsyncAttr());
  assert(!getAsyncOperand());
 
  setAsyncAttr(mlir::UnitAttr::get(context));
}
 
void EnterDataOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
  assert(!getAsyncAttr());
  assert(!getAsyncOperand());
 
  getAsyncOperandMutable().append(newValue);
}
 
void EnterDataOp::addWaitOnly(MLIRContext *context,
                              llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
 
  if (getWaitAttr())
    return;
 
  setWaitAttr(mlir::UnitAttr::get(context));
 
  getWaitDevnumMutable().clear();
  getWaitOperandsMutable().clear();
}
 
void EnterDataOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  assert(effectiveDeviceTypes.empty());
 
  if (getWaitAttr())
    return;
 
  // FIXME: At one point we need to figure out how to support multiple devnums
  // here.  For now, assert.  Eventually we probably want to make dev-num and
  // operands work in 'lock-step', so that getWaitDevnum().size() ==
  // getWaitOperandsMutable().size().
  assert(!getWaitDevnum() && "Merging devnum not yet implemented");
 
  // if hasDevnum, the first value is the devnum. The 'rest' go into the
  // operands list.
  if (hasDevnum) {
    getWaitDevnumMutable().append(newValues.front());
    newValues = newValues.drop_front();
  }
 
  getWaitOperandsMutable().append(newValues);
}
 
//===----------------------------------------------------------------------===//
// AtomicReadOp
//===----------------------------------------------------------------------===//
 
LogicalResult AtomicReadOp::verify() { return verifyCommon(); }
 
//===----------------------------------------------------------------------===//
// AtomicWriteOp
//===----------------------------------------------------------------------===//
 
LogicalResult AtomicWriteOp::verify() { return verifyCommon(); }
 
//===----------------------------------------------------------------------===//
// AtomicUpdateOp
//===----------------------------------------------------------------------===//
 
LogicalResult AtomicUpdateOp::canonicalize(AtomicUpdateOp op,
                                           PatternRewriter &rewriter) {
  if (op.isNoOp()) {
    rewriter.eraseOp(op);
    return success();
  }
 
  if (Value writeVal = op.getWriteOpVal()) {
    rewriter.replaceOpWithNewOp<AtomicWriteOp>(op, op.getX(), writeVal,
                                               op.getIfCond());
    return success();
  }
 
  return failure();
}
 
LogicalResult AtomicUpdateOp::verify() { return verifyCommon(); }
 
LogicalResult AtomicUpdateOp::verifyRegions() { return verifyRegionsCommon(); }
 
//===----------------------------------------------------------------------===//
// AtomicCaptureOp
//===----------------------------------------------------------------------===//
 
AtomicReadOp AtomicCaptureOp::getAtomicReadOp() {
  if (auto op = dyn_cast<AtomicReadOp>(getFirstOp()))
    return op;
  return dyn_cast<AtomicReadOp>(getSecondOp());
}
 
AtomicWriteOp AtomicCaptureOp::getAtomicWriteOp() {
  if (auto op = dyn_cast<AtomicWriteOp>(getFirstOp()))
    return op;
  return dyn_cast<AtomicWriteOp>(getSecondOp());
}
 
AtomicUpdateOp AtomicCaptureOp::getAtomicUpdateOp() {
  if (auto op = dyn_cast<AtomicUpdateOp>(getFirstOp()))
    return op;
  return dyn_cast<AtomicUpdateOp>(getSecondOp());
}
 
LogicalResult AtomicCaptureOp::verifyRegions() { return verifyRegionsCommon(); }
 
//===----------------------------------------------------------------------===//
// DeclareEnterOp
//===----------------------------------------------------------------------===//
 
template <typename Op>
static LogicalResult
checkDeclareOperands(Op &op, const mlir::ValueRange &operands,
                     bool requireAtLeastOneOperand = true) {
  if (operands.empty() && requireAtLeastOneOperand)
    return emitError(
        op->getLoc(),
        "at least one operand must appear on the declare operation");
 
  for (mlir::Value operand : operands) {
    if (isa<BlockArgument>(operand) ||
        !mlir::isa<acc::CopyinOp, acc::CopyoutOp, acc::CreateOp,
                   acc::DevicePtrOp, acc::GetDevicePtrOp, acc::PresentOp,
                   acc::DeclareDeviceResidentOp, acc::DeclareLinkOp,
                   acc::MapInfoOp>(operand.getDefiningOp()))
      return op.emitError(
          "expect valid declare data entry operation or acc.getdeviceptr "
          "as defining op");
 
    mlir::Value var{getVar(operand.getDefiningOp())};
    assert(var && "declare operands can only be data entry operations which "
                  "must have var");
    (void)var;
    // acc.map_info encodes the clause effects in mapFlags instead.
    if (!mlir::isa<acc::MapInfoOp>(operand.getDefiningOp())) {
      std::optional<mlir::acc::DataClause> dataClauseOptional{
          getDataClause(operand.getDefiningOp())};
      assert(dataClauseOptional.has_value() &&
             "declare operands can only be data entry operations which must "
             "have dataClause");
      (void)dataClauseOptional;
    }
  }
 
  return success();
}
 
LogicalResult acc::DeclareEnterOp::verify() {
  return checkDeclareOperands(*this, this->getDataClauseOperands());
}
 
//===----------------------------------------------------------------------===//
// DeclareExitOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::DeclareExitOp::verify() {
  if (getToken())
    return checkDeclareOperands(*this, this->getDataClauseOperands(),
                                /*requireAtLeastOneOperand=*/false);
  return checkDeclareOperands(*this, this->getDataClauseOperands());
}
 
//===----------------------------------------------------------------------===//
// DeclareOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::DeclareOp::verify() {
  return checkDeclareOperands(*this, this->getDataClauseOperands());
}
 
//===----------------------------------------------------------------------===//
// RoutineOp
//===----------------------------------------------------------------------===//
 
static unsigned getParallelismForDeviceType(acc::RoutineOp op,
                                            acc::DeviceType dtype) {
  unsigned parallelism = 0;
  parallelism += (op.hasGang(dtype) || op.getGangDimValue(dtype)) ? 1 : 0;
  parallelism += op.hasWorker(dtype) ? 1 : 0;
  parallelism += op.hasVector(dtype) ? 1 : 0;
  parallelism += op.hasSeq(dtype) ? 1 : 0;
  return parallelism;
}
 
LogicalResult acc::RoutineOp::verify() {
  unsigned baseParallelism =
      getParallelismForDeviceType(*this, acc::DeviceType::None);
 
  if (baseParallelism > 1)
    return emitError() << "only one of `gang`, `worker`, `vector`, `seq` can "
                          "be present at the same time";
 
  for (uint32_t dtypeInt = 0; dtypeInt != acc::getMaxEnumValForDeviceType();
       ++dtypeInt) {
    auto dtype = static_cast<acc::DeviceType>(dtypeInt);
    if (dtype == acc::DeviceType::None)
      continue;
    unsigned parallelism = getParallelismForDeviceType(*this, dtype);
 
    if (parallelism > 1 || (baseParallelism == 1 && parallelism == 1))
      return emitError() << "only one of `gang`, `worker`, `vector`, `seq` can "
                            "be present at the same time for device_type `"
                         << acc::stringifyDeviceType(dtype) << "`";
  }
 
  return success();
}
 
static ParseResult parseBindName(OpAsmParser &parser,
                                 mlir::ArrayAttr &bindIdName,
                                 mlir::ArrayAttr &bindStrName,
                                 mlir::ArrayAttr &deviceIdTypes,
                                 mlir::ArrayAttr &deviceStrTypes) {
  llvm::SmallVector<mlir::Attribute> bindIdNameAttrs;
  llvm::SmallVector<mlir::Attribute> bindStrNameAttrs;
  llvm::SmallVector<mlir::Attribute> deviceIdTypeAttrs;
  llvm::SmallVector<mlir::Attribute> deviceStrTypeAttrs;
 
  if (failed(parser.parseCommaSeparatedList([&]() {
        llvm::SMLoc attrLoc = parser.getCurrentLocation();
        mlir::Attribute newAttr;
        bool isSymbolRefAttr;
        if (parser.parseAttribute(newAttr))
          return failure();
        if (auto symbolRefAttr = dyn_cast<mlir::SymbolRefAttr>(newAttr)) {
          bindIdNameAttrs.push_back(symbolRefAttr);
          isSymbolRefAttr = true;
        } else if (auto stringAttr = dyn_cast<mlir::StringAttr>(newAttr)) {
          bindStrNameAttrs.push_back(stringAttr);
          isSymbolRefAttr = false;
        } else {
          parser.emitError(attrLoc,
                           "expected symbol reference or string attribute");
          return failure();
        }
        if (failed(parser.parseOptionalLSquare())) {
          if (isSymbolRefAttr) {
            deviceIdTypeAttrs.push_back(mlir::acc::DeviceTypeAttr::get(
                parser.getContext(), mlir::acc::DeviceType::None));
          } else {
            deviceStrTypeAttrs.push_back(mlir::acc::DeviceTypeAttr::get(
                parser.getContext(), mlir::acc::DeviceType::None));
          }
        } else {
          if (isSymbolRefAttr) {
            if (parser.parseAttribute(deviceIdTypeAttrs.emplace_back()) ||
                parser.parseRSquare())
              return failure();
          } else {
            if (parser.parseAttribute(deviceStrTypeAttrs.emplace_back()) ||
                parser.parseRSquare())
              return failure();
          }
        }
        return success();
      })))
    return failure();
 
  bindIdName = ArrayAttr::get(parser.getContext(), bindIdNameAttrs);
  bindStrName = ArrayAttr::get(parser.getContext(), bindStrNameAttrs);
  deviceIdTypes = ArrayAttr::get(parser.getContext(), deviceIdTypeAttrs);
  deviceStrTypes = ArrayAttr::get(parser.getContext(), deviceStrTypeAttrs);
 
  return success();
}
 
static void printBindName(mlir::OpAsmPrinter &p, mlir::Operation *op,
                          std::optional<mlir::ArrayAttr> bindIdName,
                          std::optional<mlir::ArrayAttr> bindStrName,
                          std::optional<mlir::ArrayAttr> deviceIdTypes,
                          std::optional<mlir::ArrayAttr> deviceStrTypes) {
  // Create combined vectors for all bind names and device types
  llvm::SmallVector<mlir::Attribute> allBindNames;
  llvm::SmallVector<mlir::Attribute> allDeviceTypes;
 
  // Append bindIdName and deviceIdTypes
  if (hasDeviceTypeValues(deviceIdTypes)) {
    allBindNames.append(bindIdName->begin(), bindIdName->end());
    allDeviceTypes.append(deviceIdTypes->begin(), deviceIdTypes->end());
  }
 
  // Append bindStrName and deviceStrTypes
  if (hasDeviceTypeValues(deviceStrTypes)) {
    allBindNames.append(bindStrName->begin(), bindStrName->end());
    allDeviceTypes.append(deviceStrTypes->begin(), deviceStrTypes->end());
  }
 
  // Print the combined sequence
  if (!allBindNames.empty())
    llvm::interleaveComma(llvm::zip(allBindNames, allDeviceTypes), p,
                          [&](const auto &pair) {
                            p << std::get<0>(pair);
                            printSingleDeviceType(p, std::get<1>(pair));
                          });
}
 
static ParseResult parseRoutineGangClause(OpAsmParser &parser,
                                          mlir::ArrayAttr &gang,
                                          mlir::ArrayAttr &gangDim,
                                          mlir::ArrayAttr &gangDimDeviceTypes) {
 
  llvm::SmallVector<mlir::Attribute> gangAttrs, gangDimAttrs,
      gangDimDeviceTypeAttrs;
  bool needCommaBeforeOperands = false;
 
  // Gang keyword only
  if (failed(parser.parseOptionalLParen())) {
    gangAttrs.push_back(mlir::acc::DeviceTypeAttr::get(
        parser.getContext(), mlir::acc::DeviceType::None));
    gang = ArrayAttr::get(parser.getContext(), gangAttrs);
    return success();
  }
 
  // Parse keyword only attributes
  if (succeeded(parser.parseOptionalLSquare())) {
    if (failed(parser.parseCommaSeparatedList([&]() {
          if (parser.parseAttribute(gangAttrs.emplace_back()))
            return failure();
          return success();
        })))
      return failure();
    if (parser.parseRSquare())
      return failure();
    needCommaBeforeOperands = true;
  }
 
  if (needCommaBeforeOperands && failed(parser.parseComma()))
    return failure();
 
  if (failed(parser.parseCommaSeparatedList([&]() {
        if (parser.parseKeyword(acc::RoutineOp::getGangDimKeyword()) ||
            parser.parseColon() ||
            parser.parseAttribute(gangDimAttrs.emplace_back()))
          return failure();
        if (succeeded(parser.parseOptionalLSquare())) {
          if (parser.parseAttribute(gangDimDeviceTypeAttrs.emplace_back()) ||
              parser.parseRSquare())
            return failure();
        } else {
          gangDimDeviceTypeAttrs.push_back(mlir::acc::DeviceTypeAttr::get(
              parser.getContext(), mlir::acc::DeviceType::None));
        }
        return success();
      })))
    return failure();
 
  if (failed(parser.parseRParen()))
    return failure();
 
  gang = ArrayAttr::get(parser.getContext(), gangAttrs);
  gangDim = ArrayAttr::get(parser.getContext(), gangDimAttrs);
  gangDimDeviceTypes =
      ArrayAttr::get(parser.getContext(), gangDimDeviceTypeAttrs);
 
  return success();
}
 
void printRoutineGangClause(OpAsmPrinter &p, Operation *op,
                            std::optional<mlir::ArrayAttr> gang,
                            std::optional<mlir::ArrayAttr> gangDim,
                            std::optional<mlir::ArrayAttr> gangDimDeviceTypes) {
 
  if (!hasDeviceTypeValues(gangDimDeviceTypes) && hasDeviceTypeValues(gang) &&
      gang->size() == 1) {
    auto deviceTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>((*gang)[0]);
    if (deviceTypeAttr.getValue() == mlir::acc::DeviceType::None)
      return;
  }
 
  p << "(";
 
  printDeviceTypes(p, gang);
 
  if (hasDeviceTypeValues(gang) && hasDeviceTypeValues(gangDimDeviceTypes))
    p << ", ";
 
  if (hasDeviceTypeValues(gangDimDeviceTypes))
    llvm::interleaveComma(llvm::zip(*gangDim, *gangDimDeviceTypes), p,
                          [&](const auto &pair) {
                            p << acc::RoutineOp::getGangDimKeyword() << ": ";
                            p << std::get<0>(pair);
                            printSingleDeviceType(p, std::get<1>(pair));
                          });
 
  p << ")";
}
 
static ParseResult parseDeviceTypeArrayAttr(OpAsmParser &parser,
                                            mlir::ArrayAttr &deviceTypes) {
  llvm::SmallVector<mlir::Attribute> attributes;
  // Keyword only
  if (failed(parser.parseOptionalLParen())) {
    attributes.push_back(mlir::acc::DeviceTypeAttr::get(
        parser.getContext(), mlir::acc::DeviceType::None));
    deviceTypes = ArrayAttr::get(parser.getContext(), attributes);
    return success();
  }
 
  // Parse device type attributes
  if (succeeded(parser.parseOptionalLSquare())) {
    if (failed(parser.parseCommaSeparatedList([&]() {
          if (parser.parseAttribute(attributes.emplace_back()))
            return failure();
          return success();
        })))
      return failure();
    if (parser.parseRSquare() || parser.parseRParen())
      return failure();
  }
  deviceTypes = ArrayAttr::get(parser.getContext(), attributes);
  return success();
}
 
static void
printDeviceTypeArrayAttr(mlir::OpAsmPrinter &p, mlir::Operation *op,
                         std::optional<mlir::ArrayAttr> deviceTypes) {
 
  if (hasDeviceTypeValues(deviceTypes) && deviceTypes->size() == 1) {
    auto deviceTypeAttr =
        mlir::dyn_cast<mlir::acc::DeviceTypeAttr>((*deviceTypes)[0]);
    if (deviceTypeAttr.getValue() == mlir::acc::DeviceType::None)
      return;
  }
 
  if (!hasDeviceTypeValues(deviceTypes))
    return;
 
  p << "([";
  llvm::interleaveComma(*deviceTypes, p, [&](mlir::Attribute attr) {
    auto dTypeAttr = mlir::dyn_cast<mlir::acc::DeviceTypeAttr>(attr);
    p << dTypeAttr;
  });
  p << "])";
}
 
bool RoutineOp::hasWorker() { return hasWorker(mlir::acc::DeviceType::None); }
 
bool RoutineOp::hasWorker(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWorker(), deviceType);
}
 
bool RoutineOp::hasVector() { return hasVector(mlir::acc::DeviceType::None); }
 
bool RoutineOp::hasVector(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getVector(), deviceType);
}
 
bool RoutineOp::hasSeq() { return hasSeq(mlir::acc::DeviceType::None); }
 
bool RoutineOp::hasSeq(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getSeq(), deviceType);
}
 
std::optional<std::variant<mlir::SymbolRefAttr, mlir::StringAttr>>
RoutineOp::getBindNameValue() {
  return getBindNameValue(mlir::acc::DeviceType::None);
}
 
std::optional<std::variant<mlir::SymbolRefAttr, mlir::StringAttr>>
RoutineOp::getBindNameValue(mlir::acc::DeviceType deviceType) {
  if (hasDeviceTypeValues(getBindIdNameDeviceType())) {
    if (auto pos = findSegment(*getBindIdNameDeviceType(), deviceType)) {
      auto attr = (*getBindIdName())[*pos];
      auto symbolRefAttr = dyn_cast<mlir::SymbolRefAttr>(attr);
      assert(symbolRefAttr && "expected SymbolRef");
      return symbolRefAttr;
    }
  }
 
  if (hasDeviceTypeValues(getBindStrNameDeviceType())) {
    if (auto pos = findSegment(*getBindStrNameDeviceType(), deviceType)) {
      auto attr = (*getBindStrName())[*pos];
      auto stringAttr = dyn_cast<mlir::StringAttr>(attr);
      assert(stringAttr && "expected String");
      return stringAttr;
    }
  }
 
  return std::nullopt;
}
 
std::optional<std::variant<mlir::SymbolRefAttr, mlir::StringAttr>>
RoutineOp::getEffectiveBindName(mlir::acc::DeviceType targetDeviceType) {
  assert(targetDeviceType != DeviceType::Star &&
         "expected a valid target device type");
 
  if (!getBindIdName() && !getBindStrName())
    return std::nullopt;
 
  // None queries the default bind.
  if (targetDeviceType == DeviceType::None)
    return getBindNameValue();
 
  // Prefer an exact device-specific bind.
  if (auto bindName = getBindNameValue(targetDeviceType))
    return bindName;
 
  // The device_type(*) clause applies only if no other device_type clause names
  // the target device.
  bool hasNamedDeviceType = hasGang(targetDeviceType) ||
                            getGangDimValue(targetDeviceType).has_value() ||
                            hasWorker(targetDeviceType) ||
                            hasVector(targetDeviceType) ||
                            hasSeq(targetDeviceType);
  if (!hasNamedDeviceType) {
    if (auto bindName = getBindNameValue(DeviceType::Star))
      return bindName;
  }
 
  return getBindNameValue();
}
 
bool RoutineOp::hasGang() { return hasGang(mlir::acc::DeviceType::None); }
 
bool RoutineOp::hasGang(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getGang(), deviceType);
}
 
std::optional<int64_t> RoutineOp::getGangDimValue() {
  return getGangDimValue(mlir::acc::DeviceType::None);
}
 
std::optional<int64_t>
RoutineOp::getGangDimValue(mlir::acc::DeviceType deviceType) {
  if (!hasDeviceTypeValues(getGangDimDeviceType()))
    return std::nullopt;
  if (auto pos = findSegment(*getGangDimDeviceType(), deviceType)) {
    auto intAttr = mlir::dyn_cast<mlir::IntegerAttr>((*getGangDim())[*pos]);
    return intAttr.getInt();
  }
  return std::nullopt;
}
 
void RoutineOp::addSeq(MLIRContext *context,
                       llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setSeqAttr(addDeviceTypeAffectedOperandHelper(context, getSeqAttr(),
                                                effectiveDeviceTypes));
}
 
void RoutineOp::addVector(MLIRContext *context,
                          llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setVectorAttr(addDeviceTypeAffectedOperandHelper(context, getVectorAttr(),
                                                   effectiveDeviceTypes));
}
 
void RoutineOp::addWorker(MLIRContext *context,
                          llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWorkerAttr(addDeviceTypeAffectedOperandHelper(context, getWorkerAttr(),
                                                   effectiveDeviceTypes));
}
 
void RoutineOp::addGang(MLIRContext *context,
                        llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setGangAttr(addDeviceTypeAffectedOperandHelper(context, getGangAttr(),
                                                 effectiveDeviceTypes));
}
 
void RoutineOp::addGang(MLIRContext *context,
                        llvm::ArrayRef<DeviceType> effectiveDeviceTypes,
                        uint64_t val) {
  llvm::SmallVector<mlir::Attribute> dimValues;
  llvm::SmallVector<mlir::Attribute> deviceTypes;
 
  if (getGangDimAttr())
    llvm::copy(getGangDimAttr(), std::back_inserter(dimValues));
  if (getGangDimDeviceTypeAttr())
    llvm::copy(getGangDimDeviceTypeAttr(), std::back_inserter(deviceTypes));
 
  assert(dimValues.size() == deviceTypes.size());
 
  if (effectiveDeviceTypes.empty()) {
    dimValues.push_back(
        mlir::IntegerAttr::get(mlir::IntegerType::get(context, 64), val));
    deviceTypes.push_back(
        acc::DeviceTypeAttr::get(context, acc::DeviceType::None));
  } else {
    for (DeviceType dt : effectiveDeviceTypes) {
      dimValues.push_back(
          mlir::IntegerAttr::get(mlir::IntegerType::get(context, 64), val));
      deviceTypes.push_back(acc::DeviceTypeAttr::get(context, dt));
    }
  }
  assert(dimValues.size() == deviceTypes.size());
 
  setGangDimAttr(mlir::ArrayAttr::get(context, dimValues));
  setGangDimDeviceTypeAttr(mlir::ArrayAttr::get(context, deviceTypes));
}
 
void RoutineOp::addBindStrName(MLIRContext *context,
                               llvm::ArrayRef<DeviceType> effectiveDeviceTypes,
                               mlir::StringAttr val) {
  unsigned before = getBindStrNameDeviceTypeAttr()
                        ? getBindStrNameDeviceTypeAttr().size()
                        : 0;
 
  setBindStrNameDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getBindStrNameDeviceTypeAttr(), effectiveDeviceTypes));
  unsigned after = getBindStrNameDeviceTypeAttr().size();
 
  llvm::SmallVector<mlir::Attribute> vals;
  if (getBindStrNameAttr())
    llvm::copy(getBindStrNameAttr(), std::back_inserter(vals));
  for (unsigned i = 0; i < after - before; ++i)
    vals.push_back(val);
 
  setBindStrNameAttr(mlir::ArrayAttr::get(context, vals));
}
 
void RoutineOp::addBindIDName(MLIRContext *context,
                              llvm::ArrayRef<DeviceType> effectiveDeviceTypes,
                              mlir::SymbolRefAttr val) {
  unsigned before =
      getBindIdNameDeviceTypeAttr() ? getBindIdNameDeviceTypeAttr().size() : 0;
 
  setBindIdNameDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getBindIdNameDeviceTypeAttr(), effectiveDeviceTypes));
  unsigned after = getBindIdNameDeviceTypeAttr().size();
 
  llvm::SmallVector<mlir::Attribute> vals;
  if (getBindIdNameAttr())
    llvm::copy(getBindIdNameAttr(), std::back_inserter(vals));
  for (unsigned i = 0; i < after - before; ++i)
    vals.push_back(val);
 
  setBindIdNameAttr(mlir::ArrayAttr::get(context, vals));
}
 
//===----------------------------------------------------------------------===//
// InitOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::InitOp::verify() {
  if (getOperation()->getParentOfType<ACC_COMPUTE_CONSTRUCT_AND_LOOP_OPS>())
    return emitOpError("cannot be nested in a compute operation");
  return success();
}
 
void acc::InitOp::addDeviceType(MLIRContext *context,
                                mlir::acc::DeviceType deviceType) {
  llvm::SmallVector<mlir::Attribute> deviceTypes;
  if (getDeviceTypesAttr())
    llvm::copy(getDeviceTypesAttr(), std::back_inserter(deviceTypes));
 
  deviceTypes.push_back(acc::DeviceTypeAttr::get(context, deviceType));
  setDeviceTypesAttr(mlir::ArrayAttr::get(context, deviceTypes));
}
 
//===----------------------------------------------------------------------===//
// ShutdownOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::ShutdownOp::verify() {
  if (getOperation()->getParentOfType<ACC_COMPUTE_CONSTRUCT_AND_LOOP_OPS>())
    return emitOpError("cannot be nested in a compute operation");
  return success();
}
 
void acc::ShutdownOp::addDeviceType(MLIRContext *context,
                                    mlir::acc::DeviceType deviceType) {
  llvm::SmallVector<mlir::Attribute> deviceTypes;
  if (getDeviceTypesAttr())
    llvm::copy(getDeviceTypesAttr(), std::back_inserter(deviceTypes));
 
  deviceTypes.push_back(acc::DeviceTypeAttr::get(context, deviceType));
  setDeviceTypesAttr(mlir::ArrayAttr::get(context, deviceTypes));
}
 
//===----------------------------------------------------------------------===//
// SetOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::SetOp::verify() {
  if (getOperation()->getParentOfType<ACC_COMPUTE_CONSTRUCT_AND_LOOP_OPS>())
    return emitOpError("cannot be nested in a compute operation");
  if (!getDeviceTypeAttr() && !getDefaultAsync() && !getDeviceNum())
    return emitOpError("at least one default_async, device_num, or device_type "
                       "operand must appear");
  return success();
}
 
//===----------------------------------------------------------------------===//
// UpdateOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::UpdateOp::verify() {
  // At least one of host or device should have a value.
  if (getDataClauseOperands().empty())
    return emitError("at least one value must be present in dataOperands");
 
  if (failed(verifyDeviceTypeCountMatch(*this, getAsyncOperands(),
                                        getAsyncOperandsDeviceTypeAttr(),
                                        "async")))
    return failure();
 
  if (failed(verifyDeviceTypeAndSegmentCountMatch(
          *this, getWaitOperands(), getWaitOperandsSegmentsAttr(),
          getWaitOperandsDeviceTypeAttr(), "wait")))
    return failure();
 
  if (failed(checkWaitAndAsyncConflict<acc::UpdateOp>(*this)))
    return failure();
 
  for (mlir::Value operand : getDataClauseOperands())
    if (!mlir::isa<acc::UpdateDeviceOp, acc::UpdateHostOp, acc::GetDevicePtrOp,
                   acc::MapInfoOp>(operand.getDefiningOp()))
      return emitError("expect data entry/exit operation or acc.getdeviceptr "
                       "as defining op");
 
  return success();
}
 
unsigned UpdateOp::getNumDataOperands() {
  return getDataClauseOperands().size();
}
 
Value UpdateOp::getDataOperand(unsigned i) {
  unsigned numOptional = getAsyncOperands().size();
  numOptional += getIfCond() ? 1 : 0;
  return getOperand(getWaitOperands().size() + numOptional + i);
}
 
void UpdateOp::getCanonicalizationPatterns(RewritePatternSet &results,
                                           MLIRContext *context) {
  results.add<RemoveConstantIfCondition<UpdateOp>>(context);
}
 
bool UpdateOp::hasAsyncOnly() {
  return hasAsyncOnly(mlir::acc::DeviceType::None);
}
 
bool UpdateOp::hasAsyncOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getAsyncOnly(), deviceType);
}
 
mlir::Value UpdateOp::getAsyncValue() {
  return getAsyncValue(mlir::acc::DeviceType::None);
}
 
mlir::Value UpdateOp::getAsyncValue(mlir::acc::DeviceType deviceType) {
  if (!hasDeviceTypeValues(getAsyncOperandsDeviceType()))
    return {};
 
  if (auto pos = findSegment(*getAsyncOperandsDeviceType(), deviceType))
    return getAsyncOperands()[*pos];
 
  return {};
}
 
bool UpdateOp::hasWaitOnly() {
  return hasWaitOnly(mlir::acc::DeviceType::None);
}
 
bool UpdateOp::hasWaitOnly(mlir::acc::DeviceType deviceType) {
  return hasDeviceType(getWaitOnly(), deviceType);
}
 
mlir::Operation::operand_range UpdateOp::getWaitValues() {
  return getWaitValues(mlir::acc::DeviceType::None);
}
 
mlir::Operation::operand_range
UpdateOp::getWaitValues(mlir::acc::DeviceType deviceType) {
  return getWaitValuesWithoutDevnum(
      getWaitOperandsDeviceType(), getWaitOperands(), getWaitOperandsSegments(),
      getHasWaitDevnum(), deviceType);
}
 
mlir::Value UpdateOp::getWaitDevnum() {
  return getWaitDevnum(mlir::acc::DeviceType::None);
}
 
mlir::Value UpdateOp::getWaitDevnum(mlir::acc::DeviceType deviceType) {
  return getWaitDevnumValue(getWaitOperandsDeviceType(), getWaitOperands(),
                            getWaitOperandsSegments(), getHasWaitDevnum(),
                            deviceType);
}
 
void UpdateOp::addAsyncOnly(MLIRContext *context,
                            llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOnlyAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOnlyAttr(), effectiveDeviceTypes));
}
 
void UpdateOp::addAsyncOperand(
    MLIRContext *context, mlir::Value newValue,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setAsyncOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getAsyncOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValue,
      getAsyncOperandsMutable()));
}
 
void UpdateOp::addWaitOnly(MLIRContext *context,
                           llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
  setWaitOnlyAttr(addDeviceTypeAffectedOperandHelper(context, getWaitOnlyAttr(),
                                                     effectiveDeviceTypes));
}
 
void UpdateOp::addWaitOperands(
    MLIRContext *context, bool hasDevnum, mlir::ValueRange newValues,
    llvm::ArrayRef<DeviceType> effectiveDeviceTypes) {
 
  llvm::SmallVector<int32_t> segments;
  if (getWaitOperandsSegments())
    llvm::copy(*getWaitOperandsSegments(), std::back_inserter(segments));
 
  setWaitOperandsDeviceTypeAttr(addDeviceTypeAffectedOperandHelper(
      context, getWaitOperandsDeviceTypeAttr(), effectiveDeviceTypes, newValues,
      getWaitOperandsMutable(), segments));
  setWaitOperandsSegments(segments);
 
  llvm::SmallVector<mlir::Attribute> hasDevnums;
  if (getHasWaitDevnumAttr())
    llvm::copy(getHasWaitDevnumAttr(), std::back_inserter(hasDevnums));
  hasDevnums.insert(
      hasDevnums.end(),
      std::max(effectiveDeviceTypes.size(), static_cast<size_t>(1)),
      mlir::BoolAttr::get(context, hasDevnum));
  setHasWaitDevnumAttr(mlir::ArrayAttr::get(context, hasDevnums));
}
 
//===----------------------------------------------------------------------===//
// WaitOp
//===----------------------------------------------------------------------===//
 
LogicalResult acc::WaitOp::verify() {
  // The async attribute represent the async clause without value. Therefore the
  // attribute and operand cannot appear at the same time.
  if (getAsyncOperand() && getAsync())
    return emitError("async attribute cannot appear with asyncOperand");
 
  if (getWaitDevnum() && getWaitOperands().empty())
    return emitError("wait_devnum cannot appear without waitOperands");
 
  return success();
}
 
#define GET_OP_CLASSES
#include "mlir/Dialect/OpenACC/OpenACCOps.cpp.inc"
 
#define GET_ATTRDEF_CLASSES
#include "mlir/Dialect/OpenACC/OpenACCOpsAttributes.cpp.inc"
 
#define GET_TYPEDEF_CLASSES
#include "mlir/Dialect/OpenACC/OpenACCOpsTypes.cpp.inc"
 
//===----------------------------------------------------------------------===//
// acc dialect utilities
//===----------------------------------------------------------------------===//
 
mlir::TypedValue<mlir::acc::PointerLikeType>
mlir::acc::getVarPtr(mlir::Operation *accDataClauseOp) {
  auto varPtr{llvm::TypeSwitch<mlir::Operation *,
                               mlir::TypedValue<mlir::acc::PointerLikeType>>(
                  accDataClauseOp)
                  .Case<ACC_DATA_ENTRY_OPS, mlir::acc::MapInfoOp>(
                      [&](auto entry) { return entry.getVarPtr(); })
                  .Case<mlir::acc::CopyoutOp, mlir::acc::UpdateHostOp>(
                      [&](auto exit) { return exit.getVarPtr(); })
                  .Default([&](mlir::Operation *) {
                    return mlir::TypedValue<mlir::acc::PointerLikeType>();
                  })};
  return varPtr;
}
 
mlir::Value mlir::acc::getVar(mlir::Operation *accDataClauseOp) {
  auto varPtr{llvm::TypeSwitch<mlir::Operation *, mlir::Value>(accDataClauseOp)
                  .Case<ACC_DATA_ENTRY_OPS, mlir::acc::MapInfoOp>(
                      [&](auto entry) { return entry.getVar(); })
                  .Default([&](mlir::Operation *) { return mlir::Value(); })};
  return varPtr;
}
 
mlir::Type mlir::acc::getVarType(mlir::Operation *accDataClauseOp) {
  auto varType{llvm::TypeSwitch<mlir::Operation *, mlir::Type>(accDataClauseOp)
                   .Case<ACC_DATA_ENTRY_OPS, mlir::acc::MapInfoOp>(
                       [&](auto entry) { return entry.getVarType(); })
                   .Case<mlir::acc::CopyoutOp, mlir::acc::UpdateHostOp>(
                       [&](auto exit) { return exit.getVarType(); })
                   .Default([&](mlir::Operation *) { return mlir::Type(); })};
  return varType;
}
 
mlir::TypedValue<mlir::acc::PointerLikeType>
mlir::acc::getAccPtr(mlir::Operation *accDataClauseOp) {
  auto accPtr{
      llvm::TypeSwitch<mlir::Operation *,
                       mlir::TypedValue<mlir::acc::PointerLikeType>>(
          accDataClauseOp)
          .Case<ACC_DATA_ENTRY_OPS, ACC_DATA_EXIT_OPS, mlir::acc::MapInfoOp>(
              [&](auto dataClause) { return dataClause.getAccPtr(); })
          .Default([&](mlir::Operation *) {
            return mlir::TypedValue<mlir::acc::PointerLikeType>();
          })};
  return accPtr;
}
 
mlir::Value mlir::acc::getAccVar(mlir::Operation *accDataClauseOp) {
  auto accPtr{
      llvm::TypeSwitch<mlir::Operation *, mlir::Value>(accDataClauseOp)
          .Case<ACC_DATA_ENTRY_OPS, ACC_DATA_EXIT_OPS, mlir::acc::MapInfoOp>(
              [&](auto dataClause) { return dataClause.getAccVar(); })
          .Default([&](mlir::Operation *) { return mlir::Value(); })};
  return accPtr;
}
 
mlir::Value mlir::acc::getVarPtrPtr(mlir::Operation *accDataClauseOp) {
  auto varPtrPtr{
      llvm::TypeSwitch<mlir::Operation *, mlir::Value>(accDataClauseOp)
          .Case<ACC_DATA_ENTRY_OPS, mlir::acc::MapInfoOp>(
              [&](auto dataClause) { return dataClause.getVarPtrPtr(); })
          .Default([&](mlir::Operation *) { return mlir::Value(); })};
  return varPtrPtr;
}
 
mlir::SmallVector<mlir::Value>
mlir::acc::getBounds(mlir::Operation *accDataClauseOp) {
  mlir::SmallVector<mlir::Value> bounds{
      llvm::TypeSwitch<mlir::Operation *, mlir::SmallVector<mlir::Value>>(
          accDataClauseOp)
          .Case<ACC_DATA_ENTRY_OPS, ACC_DATA_EXIT_OPS, mlir::acc::MapInfoOp>(
              [&](auto dataClause) {
                return mlir::SmallVector<mlir::Value>(
                    dataClause.getBounds().begin(),
                    dataClause.getBounds().end());
              })
          .Default([&](mlir::Operation *) {
            return mlir::SmallVector<mlir::Value, 0>();
          })};
  return bounds;
}
 
mlir::SmallVector<mlir::Value>
mlir::acc::getAsyncOperands(mlir::Operation *accDataClauseOp) {
  return llvm::TypeSwitch<mlir::Operation *, mlir::SmallVector<mlir::Value>>(
             accDataClauseOp)
      .Case<ACC_DATA_ENTRY_OPS, ACC_DATA_EXIT_OPS>([&](auto dataClause) {
        return mlir::SmallVector<mlir::Value>(
            dataClause.getAsyncOperands().begin(),
            dataClause.getAsyncOperands().end());
      })
      .Default([&](mlir::Operation *) {
        return mlir::SmallVector<mlir::Value, 0>();
      });
}
 
mlir::ArrayAttr
mlir::acc::getAsyncOperandsDeviceType(mlir::Operation *accDataClauseOp) {
  return llvm::TypeSwitch<mlir::Operation *, mlir::ArrayAttr>(accDataClauseOp)
      .Case<ACC_DATA_ENTRY_OPS, ACC_DATA_EXIT_OPS>([&](auto dataClause) {
        return dataClause.getAsyncOperandsDeviceTypeAttr();
      })
      .Default([&](mlir::Operation *) { return mlir::ArrayAttr{}; });
}
 
mlir::ArrayAttr mlir::acc::getAsyncOnly(mlir::Operation *accDataClauseOp) {
  return llvm::TypeSwitch<mlir::Operation *, mlir::ArrayAttr>(accDataClauseOp)
      .Case<ACC_DATA_ENTRY_OPS, ACC_DATA_EXIT_OPS>(
          [&](auto dataClause) { return dataClause.getAsyncOnlyAttr(); })
      .Default([&](mlir::Operation *) { return mlir::ArrayAttr{}; });
}
 
SmallVector<DeviceType, 3>
acc::getDeviceTypesByPrecedence(DeviceType deviceType) {
  SmallVector<DeviceType, 3> deviceTypes;
  if (deviceType != DeviceType::None && deviceType != DeviceType::Star)
    deviceTypes.push_back(deviceType);
  deviceTypes.push_back(DeviceType::Star);
  deviceTypes.push_back(DeviceType::None);
  return deviceTypes;
}
 
std::optional<llvm::StringRef> mlir::acc::getVarName(mlir::Operation *accOp) {
  auto name{
      llvm::TypeSwitch<mlir::Operation *, std::optional<llvm::StringRef>>(accOp)
          .Case<ACC_DATA_ENTRY_OPS, mlir::acc::MapInfoOp>(
              [&](auto entry) { return entry.getName(); })
          .Default([&](mlir::Operation *) -> std::optional<llvm::StringRef> {
            return {};
          })};
  return name;
}
 
std::optional<mlir::acc::DataClause>
mlir::acc::getDataClause(mlir::Operation *accDataEntryOp) {
  auto dataClause{
      llvm::TypeSwitch<mlir::Operation *, std::optional<mlir::acc::DataClause>>(
          accDataEntryOp)
          .Case<ACC_DATA_ENTRY_OPS>(
              [&](auto entry) { return entry.getDataClause(); })
          .Default([&](mlir::Operation *) { return std::nullopt; })};
  return dataClause;
}
 
bool mlir::acc::isDataEntryOp(mlir::Operation *op) {
  return mlir::isa_and_nonnull<ACC_DATA_ENTRY_OPS, mlir::acc::MapInfoOp>(op);
}
 
bool mlir::acc::getImplicitFlag(mlir::Operation *accDataEntryOp) {
  return llvm::TypeSwitch<mlir::Operation *, bool>(accDataEntryOp)
      .Case<ACC_DATA_ENTRY_OPS>([&](auto entry) { return entry.getImplicit(); })
      .Case<mlir::acc::MapInfoOp>([&](auto mapInfo) {
        return bitEnumContainsAny(mapInfo.getMapFlags(),
                                  mlir::acc::MapFlags::implicit);
      })
      .Default([&](mlir::Operation *) { return false; });
}
 
bool mlir::acc::getSyntheticFlag(mlir::Operation *accDataClauseOp) {
  return llvm::TypeSwitch<mlir::Operation *, bool>(accDataClauseOp)
      .Case<ACC_DATA_CLAUSE_OPS>(
          [&](auto dataClause) { return dataClause.getSynthetic(); })
      .Default([&](mlir::Operation *) { return false; });
}
 
mlir::ValueRange mlir::acc::getDataOperands(mlir::Operation *accOp) {
  auto dataOperands{
      llvm::TypeSwitch<mlir::Operation *, mlir::ValueRange>(accOp)
          .Case<ACC_COMPUTE_AND_DATA_CONSTRUCT_OPS,
                mlir::acc::KernelEnvironmentOp>(
              [&](auto entry) { return entry.getDataClauseOperands(); })
          .Default([&](mlir::Operation *) { return mlir::ValueRange(); })};
  return dataOperands;
}
 
mlir::MutableOperandRange
mlir::acc::getMutableDataOperands(mlir::Operation *accOp) {
  auto dataOperands{
      llvm::TypeSwitch<mlir::Operation *, mlir::MutableOperandRange>(accOp)
          .Case<ACC_COMPUTE_AND_DATA_CONSTRUCT_OPS,
                mlir::acc::KernelEnvironmentOp>(
              [&](auto entry) { return entry.getDataClauseOperandsMutable(); })
          .Default([&](mlir::Operation *) { return nullptr; })};
  return dataOperands;
}
 
mlir::SymbolRefAttr mlir::acc::getRecipe(mlir::Operation *accOp) {
  auto recipe{
      llvm::TypeSwitch<mlir::Operation *, mlir::SymbolRefAttr>(accOp)
          .Case<ACC_DATA_ENTRY_OPS>(
              [&](auto entry) { return entry.getRecipeAttr(); })
          .Default([&](mlir::Operation *) { return mlir::SymbolRefAttr{}; })};
  return recipe;
}