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Eqsat pdl interp

eqsat_pdl_interp

A dialect that extends pdl_interp with eqsat-specific operations.

EqSatPDLInterp = Dialect('eqsat_pdl_interp', [GetResultOp, GetResultsOp, GetDefiningOpOp, ReplaceOp, CreateOperationOp, RecordMatchOp, FinalizeOp, ChooseOp]) module-attribute

GetResultOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class GetResultOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interpget_result-pdl_interpgetresultop).
    """

    name = "eqsat_pdl_interp.get_result"
    index = prop_def(IntegerAttr[I32])
    input_op = operand_def(OperationType)
    value = result_def(ValueType)

    assembly_format = "$index `of` $input_op attr-dict"

    def __init__(self, index: int | IntegerAttr[I32], input_op: SSAValue) -> None:
        if isinstance(index, int):
            index = IntegerAttr.from_int_and_width(index, 32)
        super().__init__(
            operands=[input_op], properties={"index": index}, result_types=[ValueType()]
        )

name = 'eqsat_pdl_interp.get_result' class-attribute instance-attribute

index = prop_def(IntegerAttr[I32]) class-attribute instance-attribute

input_op = operand_def(OperationType) class-attribute instance-attribute

value = result_def(ValueType) class-attribute instance-attribute

assembly_format = '$index `of` $input_op attr-dict' class-attribute instance-attribute

__init__(index: int | IntegerAttr[I32], input_op: SSAValue) -> None

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(self, index: int | IntegerAttr[I32], input_op: SSAValue) -> None:
    if isinstance(index, int):
        index = IntegerAttr.from_int_and_width(index, 32)
    super().__init__(
        operands=[input_op], properties={"index": index}, result_types=[ValueType()]
    )

GetResultsOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class GetResultsOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interpget_results-pdl_interpgetresultsop).
    """

    name = "eqsat_pdl_interp.get_results"
    index = opt_prop_def(IntegerAttr[I32])
    input_op = operand_def(OperationType)
    value = result_def(ValueType | RangeType[ValueType])

    # assembly_format = "($index^)? `of` $input_op `:` type($value) attr-dict"
    # TODO: Fix bug preventing this assebmly format from working: https://github.com/xdslproject/xdsl/issues/4136.

    def __init__(
        self,
        index: int | IntegerAttr[I32] | None,
        input_op: SSAValue,
        result_type: ValueType | RangeType[ValueType],
    ) -> None:
        if isinstance(index, int):
            index = IntegerAttr.from_int_and_width(index, 32)
        super().__init__(
            operands=[input_op],
            properties={"index": index},
            result_types=[result_type],
        )

    @classmethod
    def parse(cls, parser: Parser) -> GetResultsOp:
        index = parser.parse_optional_integer()
        if index is not None:
            index = IntegerAttr.from_int_and_width(index, 32)
        parser.parse_characters("of")
        input_op = parser.parse_operand()
        parser.parse_punctuation(":")
        result_type = parser.parse_type()
        return GetResultsOp.build(
            operands=(input_op,),
            properties={"index": index},
            result_types=(result_type,),
        )

    def print(self, printer: Printer):
        if self.index is not None:
            printer.print_string(" ", indent=0)
            self.index.print_without_type(printer)
        printer.print_string(" of ", indent=0)
        printer.print_operand(self.input_op)
        printer.print_string(" : ", indent=0)
        printer.print_attribute(self.value.type)

name = 'eqsat_pdl_interp.get_results' class-attribute instance-attribute

index = opt_prop_def(IntegerAttr[I32]) class-attribute instance-attribute

input_op = operand_def(OperationType) class-attribute instance-attribute

value = result_def(ValueType | RangeType[ValueType]) class-attribute instance-attribute

__init__(index: int | IntegerAttr[I32] | None, input_op: SSAValue, result_type: ValueType | RangeType[ValueType]) -> None

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(
    self,
    index: int | IntegerAttr[I32] | None,
    input_op: SSAValue,
    result_type: ValueType | RangeType[ValueType],
) -> None:
    if isinstance(index, int):
        index = IntegerAttr.from_int_and_width(index, 32)
    super().__init__(
        operands=[input_op],
        properties={"index": index},
        result_types=[result_type],
    )

parse(parser: Parser) -> GetResultsOp classmethod

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@classmethod
def parse(cls, parser: Parser) -> GetResultsOp:
    index = parser.parse_optional_integer()
    if index is not None:
        index = IntegerAttr.from_int_and_width(index, 32)
    parser.parse_characters("of")
    input_op = parser.parse_operand()
    parser.parse_punctuation(":")
    result_type = parser.parse_type()
    return GetResultsOp.build(
        operands=(input_op,),
        properties={"index": index},
        result_types=(result_type,),
    )

print(printer: Printer)

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def print(self, printer: Printer):
    if self.index is not None:
        printer.print_string(" ", indent=0)
        self.index.print_without_type(printer)
    printer.print_string(" of ", indent=0)
    printer.print_operand(self.input_op)
    printer.print_string(" : ", indent=0)
    printer.print_attribute(self.value.type)

GetDefiningOpOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class GetDefiningOpOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interpget_defining_op-pdl_interpgetdefiningopop).
    """

    name = "eqsat_pdl_interp.get_defining_op"
    value = operand_def(ValueType | RangeType[ValueType])
    input_op = result_def(OperationType)

    assembly_format = "`of` $value `:` type($value) attr-dict"

    def __init__(self, value: SSAValue) -> None:
        super().__init__(operands=[value], result_types=[OperationType()])

name = 'eqsat_pdl_interp.get_defining_op' class-attribute instance-attribute

value = operand_def(ValueType | RangeType[ValueType]) class-attribute instance-attribute

input_op = result_def(OperationType) class-attribute instance-attribute

assembly_format = '`of` $value `:` type($value) attr-dict' class-attribute instance-attribute

__init__(value: SSAValue) -> None

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(self, value: SSAValue) -> None:
    super().__init__(operands=[value], result_types=[OperationType()])

ReplaceOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class ReplaceOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interpreplace-pdl_interpreplaceop).
    """

    name = "eqsat_pdl_interp.replace"
    input_op = operand_def(OperationType)
    repl_values = var_operand_def(ValueType | RangeType[ValueType])

    assembly_format = (
        "$input_op `with` ` ` `(` ($repl_values^ `:` type($repl_values))? `)` attr-dict"
    )

    def __init__(self, input_op: SSAValue, repl_values: list[SSAValue]) -> None:
        super().__init__(operands=[input_op, repl_values])

name = 'eqsat_pdl_interp.replace' class-attribute instance-attribute

input_op = operand_def(OperationType) class-attribute instance-attribute

repl_values = var_operand_def(ValueType | RangeType[ValueType]) class-attribute instance-attribute

assembly_format = '$input_op `with` ` ` `(` ($repl_values^ `:` type($repl_values))? `)` attr-dict' class-attribute instance-attribute

__init__(input_op: SSAValue, repl_values: list[SSAValue]) -> None

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(self, input_op: SSAValue, repl_values: list[SSAValue]) -> None:
    super().__init__(operands=[input_op, repl_values])

CreateOperationOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class CreateOperationOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interpcreate_operation-pdl_interpcreateoperationop).
    """

    name = "eqsat_pdl_interp.create_operation"
    constraint_name = prop_def(StringAttr, prop_name="name")
    input_attribute_names = prop_def(
        ArrayAttr[StringAttr], prop_name="inputAttributeNames"
    )
    inferred_result_types = opt_prop_def(UnitAttr, prop_name="inferredResultTypes")

    input_operands = var_operand_def(ValueType | RangeType[ValueType])
    input_attributes = var_operand_def(AttributeType | RangeType[AttributeType])
    input_result_types = var_operand_def(TypeType | RangeType[TypeType])

    result_op = result_def(OperationType)

    irdl_options = (AttrSizedOperandSegments(as_property=True),)

    # assembly_format = (
    #     "$name (`(` $input_operands^ `:` type($input_operands) `)`)?"
    #     "` `custom<CreateOperationOpAttributes>($inputAttributes, $inputAttributeNames)"
    #     "custom<CreateOperationOpResults>($inputResultTypes, type($inputResultTypes), $inferredResultTypes)"
    #     "attr-dict"
    # )
    # TODO: this assebly format is unsupported in xDSL because of the `custom` directives.

    def __init__(
        self,
        name: str | StringAttr,
        inferred_result_types: UnitAttr | None = None,
        input_attribute_names: Iterable[StringAttr] | None = None,
        input_operands: Sequence[SSAValue] | None = None,
        input_attributes: Sequence[SSAValue] | None = None,
        input_result_types: Sequence[SSAValue] | None = None,
    ) -> None:
        if isinstance(name, str):
            name = StringAttr(name)
        if input_attribute_names is not None:
            input_attribute_names = ArrayAttr(input_attribute_names)
        if input_attribute_names is None:
            input_attribute_names = ArrayAttr([])

        if input_operands is None:
            input_operands = []
        if input_attributes is None:
            input_attributes = []
        if input_result_types is None:
            input_result_types = []

        super().__init__(
            operands=[input_operands, input_attributes, input_result_types],
            result_types=[OperationType()],
            properties={
                "name": name,
                "inferredResultTypes": inferred_result_types,
                "inputAttributeNames": input_attribute_names,
            }
            if inferred_result_types
            else {
                "name": name,
                "inputAttributeNames": input_attribute_names,
            },
        )

    @staticmethod
    def _parse_attr(parser: Parser) -> tuple[Attribute, SSAValue]:
        attrname = parser.parse_attribute()
        parser.parse_punctuation("=")
        operand = parser.parse_operand()
        return (attrname, operand)

    @staticmethod
    def _parse_input_list(parser: Parser) -> list[SSAValue]:
        values: list[SSAValue] = []
        if parser.parse_optional_punctuation("("):
            values = parser.parse_comma_separated_list(
                delimiter=Parser.Delimiter.NONE,
                parse=lambda: parser.parse_operand(),
            )
            parser.parse_punctuation(":")
            parser.parse_comma_separated_list(
                delimiter=Parser.Delimiter.NONE,
                parse=lambda: parser.parse_type(),
            )
            parser.parse_punctuation(")")
        return values

    @classmethod
    def parse(cls, parser: Parser) -> CreateOperationOp:
        name = parser.parse_attribute()

        input_operands = CreateOperationOp._parse_input_list(parser)

        input_attribute_names = None
        input_attributes = None
        attributes = parser.parse_optional_comma_separated_list(
            delimiter=Parser.Delimiter.BRACES,
            parse=lambda: CreateOperationOp._parse_attr(parser),
        )
        if attributes is not None:
            input_attribute_names = [i[0] for i in attributes]
            input_attributes = [i[1] for i in attributes]
        else:
            input_attribute_names = []
            input_attributes = []
        input_attribute_names = ArrayAttr(input_attribute_names)

        input_result_types = None
        inferred_result_types = None
        if parser.parse_optional_punctuation("->") is not None:
            if parser.parse_optional_punctuation("<"):
                parser.parse_characters("inferred")
                parser.parse_punctuation(">")
                inferred_result_types = UnitAttr()
            else:
                input_result_types = CreateOperationOp._parse_input_list(parser)

        op = CreateOperationOp.build(
            operands=(input_operands, input_attributes, input_result_types),
            properties={
                "name": name,
                "inputAttributeNames": input_attribute_names,
            }
            if inferred_result_types is None
            else {
                "name": name,
                "inferredResultTypes": inferred_result_types,
                "inputAttributeNames": input_attribute_names,
            },
            result_types=(OperationType(),),
        )
        return op

    @staticmethod
    def _print_input_list(printer: Printer, values: Iterable[SSAValue]):
        printer.print_string("(", indent=0)
        printer.print_list(values, printer.print_operand)
        printer.print_string(" : ", indent=0)
        printer.print_list(values, lambda op: printer.print_attribute(op.type))
        printer.print_string(")", indent=0)

    @staticmethod
    def _print_attr(printer: Printer, value: tuple[StringAttr, SSAValue]):
        printer.print_attribute(value[0])
        printer.print_string(" = ", indent=0)
        printer.print_operand(value[1])

    def print(self, printer: Printer):
        printer.print_string(" ", indent=0)
        printer.print_attribute(self.constraint_name)
        if self.input_operands:
            CreateOperationOp._print_input_list(printer, self.input_operands)
        if self.input_attributes:
            printer.print_string(" {", indent=0)
            printer.print_list(
                zip(
                    cast(tuple[StringAttr], self.input_attribute_names.data),
                    self.input_attributes,
                ),
                lambda value: CreateOperationOp._print_attr(printer, value),
            )
            printer.print_string("}", indent=0)
        if self.inferred_result_types:
            assert not self.input_result_types
            printer.print_string(" -> <inferred>", indent=0)
        elif self.input_result_types:
            printer.print_string(" -> ", indent=0)
            CreateOperationOp._print_input_list(printer, self.input_result_types)

name = 'eqsat_pdl_interp.create_operation' class-attribute instance-attribute

constraint_name = prop_def(StringAttr, prop_name='name') class-attribute instance-attribute

input_attribute_names = prop_def(ArrayAttr[StringAttr], prop_name='inputAttributeNames') class-attribute instance-attribute

inferred_result_types = opt_prop_def(UnitAttr, prop_name='inferredResultTypes') class-attribute instance-attribute

input_operands = var_operand_def(ValueType | RangeType[ValueType]) class-attribute instance-attribute

input_attributes = var_operand_def(AttributeType | RangeType[AttributeType]) class-attribute instance-attribute

input_result_types = var_operand_def(TypeType | RangeType[TypeType]) class-attribute instance-attribute

result_op = result_def(OperationType) class-attribute instance-attribute

irdl_options = (AttrSizedOperandSegments(as_property=True),) class-attribute instance-attribute

__init__(name: str | StringAttr, inferred_result_types: UnitAttr | None = None, input_attribute_names: Iterable[StringAttr] | None = None, input_operands: Sequence[SSAValue] | None = None, input_attributes: Sequence[SSAValue] | None = None, input_result_types: Sequence[SSAValue] | None = None) -> None

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(
    self,
    name: str | StringAttr,
    inferred_result_types: UnitAttr | None = None,
    input_attribute_names: Iterable[StringAttr] | None = None,
    input_operands: Sequence[SSAValue] | None = None,
    input_attributes: Sequence[SSAValue] | None = None,
    input_result_types: Sequence[SSAValue] | None = None,
) -> None:
    if isinstance(name, str):
        name = StringAttr(name)
    if input_attribute_names is not None:
        input_attribute_names = ArrayAttr(input_attribute_names)
    if input_attribute_names is None:
        input_attribute_names = ArrayAttr([])

    if input_operands is None:
        input_operands = []
    if input_attributes is None:
        input_attributes = []
    if input_result_types is None:
        input_result_types = []

    super().__init__(
        operands=[input_operands, input_attributes, input_result_types],
        result_types=[OperationType()],
        properties={
            "name": name,
            "inferredResultTypes": inferred_result_types,
            "inputAttributeNames": input_attribute_names,
        }
        if inferred_result_types
        else {
            "name": name,
            "inputAttributeNames": input_attribute_names,
        },
    )

parse(parser: Parser) -> CreateOperationOp classmethod

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@classmethod
def parse(cls, parser: Parser) -> CreateOperationOp:
    name = parser.parse_attribute()

    input_operands = CreateOperationOp._parse_input_list(parser)

    input_attribute_names = None
    input_attributes = None
    attributes = parser.parse_optional_comma_separated_list(
        delimiter=Parser.Delimiter.BRACES,
        parse=lambda: CreateOperationOp._parse_attr(parser),
    )
    if attributes is not None:
        input_attribute_names = [i[0] for i in attributes]
        input_attributes = [i[1] for i in attributes]
    else:
        input_attribute_names = []
        input_attributes = []
    input_attribute_names = ArrayAttr(input_attribute_names)

    input_result_types = None
    inferred_result_types = None
    if parser.parse_optional_punctuation("->") is not None:
        if parser.parse_optional_punctuation("<"):
            parser.parse_characters("inferred")
            parser.parse_punctuation(">")
            inferred_result_types = UnitAttr()
        else:
            input_result_types = CreateOperationOp._parse_input_list(parser)

    op = CreateOperationOp.build(
        operands=(input_operands, input_attributes, input_result_types),
        properties={
            "name": name,
            "inputAttributeNames": input_attribute_names,
        }
        if inferred_result_types is None
        else {
            "name": name,
            "inferredResultTypes": inferred_result_types,
            "inputAttributeNames": input_attribute_names,
        },
        result_types=(OperationType(),),
    )
    return op

print(printer: Printer)

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def print(self, printer: Printer):
    printer.print_string(" ", indent=0)
    printer.print_attribute(self.constraint_name)
    if self.input_operands:
        CreateOperationOp._print_input_list(printer, self.input_operands)
    if self.input_attributes:
        printer.print_string(" {", indent=0)
        printer.print_list(
            zip(
                cast(tuple[StringAttr], self.input_attribute_names.data),
                self.input_attributes,
            ),
            lambda value: CreateOperationOp._print_attr(printer, value),
        )
        printer.print_string("}", indent=0)
    if self.inferred_result_types:
        assert not self.input_result_types
        printer.print_string(" -> <inferred>", indent=0)
    elif self.input_result_types:
        printer.print_string(" -> ", indent=0)
        CreateOperationOp._print_input_list(printer, self.input_result_types)

RecordMatchOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class RecordMatchOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interprecord_match-pdl_interprecordmatchop).
    """

    name = "eqsat_pdl_interp.record_match"
    traits = traits_def(IsTerminator())
    rewriter = prop_def(SymbolRefAttr)
    rootKind = opt_prop_def(StringAttr)
    generatedOps = opt_prop_def(ArrayAttr[StringAttr])
    benefit = prop_def(IntegerAttr[I16])

    inputs = var_operand_def(AnyPDLTypeConstr)
    matched_ops = var_operand_def(OperationType)

    dest = successor_def()

    irdl_options = (AttrSizedOperandSegments(as_property=True),)

    assembly_format = (
        "$rewriter (`(` $inputs^ `:` type($inputs) `)`)? `:` `benefit` `(` $benefit `)` `,`"
        "(`generatedOps` `(` $generatedOps^ `)` `,`)? `loc` `(` `[` $matched_ops `]` `)`"
        "(`,` `root` `(` $rootKind^ `)`)? attr-dict `->` $dest"
    )

    def __init__(
        self,
        rewriter: str | SymbolRefAttr,
        root_kind: str | StringAttr | None,
        generated_ops: ArrayAttr[StringAttr] | None,
        benefit: int | IntegerAttr[I16],
        inputs: Sequence[SSAValue],
        matched_ops: Sequence[SSAValue],
        dest: Block,
    ) -> None:
        if isinstance(rewriter, str):
            rewriter = SymbolRefAttr(rewriter)
        if isinstance(root_kind, str):
            root_kind = StringAttr(root_kind)
        if isinstance(benefit, int):
            benefit = IntegerAttr.from_int_and_width(benefit, 16)
        super().__init__(
            operands=[inputs, matched_ops],
            properties={
                "rewriter": rewriter,
                "rootKind": root_kind,
                "generatedOps": generated_ops,
                "benefit": benefit,
            },
            successors=[dest],
        )

name = 'eqsat_pdl_interp.record_match' class-attribute instance-attribute

traits = traits_def(IsTerminator()) class-attribute instance-attribute

rewriter = prop_def(SymbolRefAttr) class-attribute instance-attribute

rootKind = opt_prop_def(StringAttr) class-attribute instance-attribute

generatedOps = opt_prop_def(ArrayAttr[StringAttr]) class-attribute instance-attribute

benefit = prop_def(IntegerAttr[I16]) class-attribute instance-attribute

inputs = var_operand_def(AnyPDLTypeConstr) class-attribute instance-attribute

matched_ops = var_operand_def(OperationType) class-attribute instance-attribute

dest = successor_def() class-attribute instance-attribute

irdl_options = (AttrSizedOperandSegments(as_property=True),) class-attribute instance-attribute

assembly_format = '$rewriter (`(` $inputs^ `:` type($inputs) `)`)? `:` `benefit` `(` $benefit `)` `,`(`generatedOps` `(` $generatedOps^ `)` `,`)? `loc` `(` `[` $matched_ops `]` `)`(`,` `root` `(` $rootKind^ `)`)? attr-dict `->` $dest' class-attribute instance-attribute

__init__(rewriter: str | SymbolRefAttr, root_kind: str | StringAttr | None, generated_ops: ArrayAttr[StringAttr] | None, benefit: int | IntegerAttr[I16], inputs: Sequence[SSAValue], matched_ops: Sequence[SSAValue], dest: Block) -> None

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(
    self,
    rewriter: str | SymbolRefAttr,
    root_kind: str | StringAttr | None,
    generated_ops: ArrayAttr[StringAttr] | None,
    benefit: int | IntegerAttr[I16],
    inputs: Sequence[SSAValue],
    matched_ops: Sequence[SSAValue],
    dest: Block,
) -> None:
    if isinstance(rewriter, str):
        rewriter = SymbolRefAttr(rewriter)
    if isinstance(root_kind, str):
        root_kind = StringAttr(root_kind)
    if isinstance(benefit, int):
        benefit = IntegerAttr.from_int_and_width(benefit, 16)
    super().__init__(
        operands=[inputs, matched_ops],
        properties={
            "rewriter": rewriter,
            "rootKind": root_kind,
            "generatedOps": generated_ops,
            "benefit": benefit,
        },
        successors=[dest],
    )

FinalizeOp

Bases: IRDLOperation

See external documentation.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class FinalizeOp(IRDLOperation):
    """
    See external [documentation](https://mlir.llvm.org/docs/Dialects/PDLInterpOps/#pdl_interpfinalize-pdl_interpfinalizeop).
    """

    name = "eqsat_pdl_interp.finalize"
    traits = traits_def(IsTerminator())

    assembly_format = "attr-dict"

    def __init__(self):
        super().__init__()

name = 'eqsat_pdl_interp.finalize' class-attribute instance-attribute

traits = traits_def(IsTerminator()) class-attribute instance-attribute

assembly_format = 'attr-dict' class-attribute instance-attribute

__init__()

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(self):
    super().__init__()

ChooseOp

Bases: IRDLOperation

This operation can be used in pdl_interp matchers and integrates with the backtracking mechanism. It holds multiple "choices" (successors). When this operation is encountered, a BacktrackPoint is stored, and the choice is visited. When this execution of this choice eventually finalizes, the backtracking logic will jump to the next choice, until all choices are exhausted. Finally, the default successor is visited.

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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@irdl_op_definition
class ChooseOp(IRDLOperation):
    """
    This operation can be used in pdl_interp matchers and
    integrates with the backtracking mechanism. It holds multiple
    "choices" (successors). When this operation is encountered,
    a BacktrackPoint is stored, and the choice is visited.
    When this execution of this choice eventually finalizes, the
    backtracking logic will jump to the next choice, until all
    choices are exhausted. Finally, the default successor is visited.
    """

    name = "eqsat_pdl_interp.choose"
    default_dest = successor_def()
    choices = var_successor_def()
    traits = traits_def(IsTerminator())
    assembly_format = "`from` $choices `then` $default_dest attr-dict"

    def __init__(self, choices: Sequence[Block], default: Block):
        super().__init__(
            successors=[default, choices],
        )

name = 'eqsat_pdl_interp.choose' class-attribute instance-attribute

default_dest = successor_def() class-attribute instance-attribute

choices = var_successor_def() class-attribute instance-attribute

traits = traits_def(IsTerminator()) class-attribute instance-attribute

assembly_format = '`from` $choices `then` $default_dest attr-dict' class-attribute instance-attribute

__init__(choices: Sequence[Block], default: Block)

Source code in xdsl/dialects/eqsat_pdl_interp.py 
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def __init__(self, choices: Sequence[Block], default: Block):
    super().__init__(
        successors=[default, choices],
    )