llvm/mlir/include/mlir-c/BuiltinTypes.h

//===-- mlir-c/BuiltinTypes.h - C API for MLIR Builtin types ------*- C -*-===//
//
// Part of the LLVM 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
//
//===----------------------------------------------------------------------===//

#ifndef MLIR_C_BUILTINTYPES_H
#define MLIR_C_BUILTINTYPES_H

#include "mlir-c/AffineMap.h"
#include "mlir-c/IR.h"
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

//===----------------------------------------------------------------------===//
// Integer types.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Integer type.
MLIR_CAPI_EXPORTED MlirTypeID mlirIntegerTypeGetTypeID(void);

/// Checks whether the given type is an integer type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAInteger(MlirType type);

/// Creates a signless integer type of the given bitwidth in the context. The
/// type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirIntegerTypeGet(MlirContext ctx,
                                               unsigned bitwidth);

/// Creates a signed integer type of the given bitwidth in the context. The type
/// is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirIntegerTypeSignedGet(MlirContext ctx,
                                                     unsigned bitwidth);

/// Creates an unsigned integer type of the given bitwidth in the context. The
/// type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirIntegerTypeUnsignedGet(MlirContext ctx,
                                                       unsigned bitwidth);

/// Returns the bitwidth of an integer type.
MLIR_CAPI_EXPORTED unsigned mlirIntegerTypeGetWidth(MlirType type);

/// Checks whether the given integer type is signless.
MLIR_CAPI_EXPORTED bool mlirIntegerTypeIsSignless(MlirType type);

/// Checks whether the given integer type is signed.
MLIR_CAPI_EXPORTED bool mlirIntegerTypeIsSigned(MlirType type);

/// Checks whether the given integer type is unsigned.
MLIR_CAPI_EXPORTED bool mlirIntegerTypeIsUnsigned(MlirType type);

//===----------------------------------------------------------------------===//
// Index type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Index type.
MLIR_CAPI_EXPORTED MlirTypeID mlirIndexTypeGetTypeID(void);

/// Checks whether the given type is an index type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAIndex(MlirType type);

/// Creates an index type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirIndexTypeGet(MlirContext ctx);

//===----------------------------------------------------------------------===//
// Floating-point types.
//===----------------------------------------------------------------------===//

/// Checks whether the given type is a floating-point type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat(MlirType type);

/// Returns the bitwidth of a floating-point type.
MLIR_CAPI_EXPORTED unsigned mlirFloatTypeGetWidth(MlirType type);

/// Returns the typeID of an Float4E2M1FN type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat4E2M1FNTypeGetTypeID(void);

/// Checks whether the given type is an f4E2M1FN type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat4E2M1FN(MlirType type);

/// Creates an f4E2M1FN type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat4E2M1FNTypeGet(MlirContext ctx);

/// Returns the typeID of an Float6E2M3FN type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat6E2M3FNTypeGetTypeID(void);

/// Checks whether the given type is an f6E2M3FN type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat6E2M3FN(MlirType type);

/// Creates an f6E2M3FN type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat6E2M3FNTypeGet(MlirContext ctx);

/// Returns the typeID of an Float6E3M2FN type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat6E3M2FNTypeGetTypeID(void);

/// Checks whether the given type is an f6E3M2FN type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat6E3M2FN(MlirType type);

/// Creates an f6E3M2FN type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat6E3M2FNTypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E5M2 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E5M2TypeGetTypeID(void);

/// Checks whether the given type is an f8E5M2 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E5M2(MlirType type);

/// Creates an f8E5M2 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E5M2TypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E4M3 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E4M3TypeGetTypeID(void);

/// Checks whether the given type is an f8E4M3 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E4M3(MlirType type);

/// Creates an f8E4M3 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E4M3TypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E4M3FN type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E4M3FNTypeGetTypeID(void);

/// Checks whether the given type is an f8E4M3FN type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E4M3FN(MlirType type);

/// Creates an f8E4M3FN type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E4M3FNTypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E5M2FNUZ type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E5M2FNUZTypeGetTypeID(void);

/// Checks whether the given type is an f8E5M2FNUZ type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E5M2FNUZ(MlirType type);

/// Creates an f8E5M2FNUZ type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E5M2FNUZTypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E4M3FNUZ type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E4M3FNUZTypeGetTypeID(void);

/// Checks whether the given type is an f8E4M3FNUZ type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E4M3FNUZ(MlirType type);

/// Creates an f8E4M3FNUZ type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E4M3FNUZTypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E4M3B11FNUZ type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E4M3B11FNUZTypeGetTypeID(void);

/// Checks whether the given type is an f8E4M3B11FNUZ type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E4M3B11FNUZ(MlirType type);

/// Creates an f8E4M3B11FNUZ type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E4M3B11FNUZTypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E3M4 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E3M4TypeGetTypeID(void);

/// Checks whether the given type is an f8E3M4 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E3M4(MlirType type);

/// Creates an f8E3M4 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E3M4TypeGet(MlirContext ctx);

/// Returns the typeID of an Float8E8M0FNU type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E8M0FNUTypeGetTypeID(void);

/// Checks whether the given type is an f8E8M0FNU type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E8M0FNU(MlirType type);

/// Creates an f8E8M0FNU type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E8M0FNUTypeGet(MlirContext ctx);

/// Returns the typeID of an BFloat16 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirBFloat16TypeGetTypeID(void);

/// Checks whether the given type is a bf16 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsABF16(MlirType type);

/// Creates a bf16 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirBF16TypeGet(MlirContext ctx);

/// Returns the typeID of an Float16 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat16TypeGetTypeID(void);

/// Checks whether the given type is an f16 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAF16(MlirType type);

/// Creates an f16 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirF16TypeGet(MlirContext ctx);

/// Returns the typeID of an Float32 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat32TypeGetTypeID(void);

/// Checks whether the given type is an f32 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAF32(MlirType type);

/// Creates an f32 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirF32TypeGet(MlirContext ctx);

/// Returns the typeID of an Float64 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat64TypeGetTypeID(void);

/// Checks whether the given type is an f64 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAF64(MlirType type);

/// Creates a f64 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirF64TypeGet(MlirContext ctx);

/// Returns the typeID of a TF32 type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloatTF32TypeGetTypeID(void);

/// Checks whether the given type is an TF32 type.
MLIR_CAPI_EXPORTED bool mlirTypeIsATF32(MlirType type);

/// Creates a TF32 type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirTF32TypeGet(MlirContext ctx);

//===----------------------------------------------------------------------===//
// None type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an None type.
MLIR_CAPI_EXPORTED MlirTypeID mlirNoneTypeGetTypeID(void);

/// Checks whether the given type is a None type.
MLIR_CAPI_EXPORTED bool mlirTypeIsANone(MlirType type);

/// Creates a None type in the given context. The type is owned by the
/// context.
MLIR_CAPI_EXPORTED MlirType mlirNoneTypeGet(MlirContext ctx);

//===----------------------------------------------------------------------===//
// Complex type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Complex type.
MLIR_CAPI_EXPORTED MlirTypeID mlirComplexTypeGetTypeID(void);

/// Checks whether the given type is a Complex type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAComplex(MlirType type);

/// Creates a complex type with the given element type in the same context as
/// the element type. The type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirComplexTypeGet(MlirType elementType);

/// Returns the element type of the given complex type.
MLIR_CAPI_EXPORTED MlirType mlirComplexTypeGetElementType(MlirType type);

//===----------------------------------------------------------------------===//
// Shaped type.
//===----------------------------------------------------------------------===//

/// Checks whether the given type is a Shaped type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAShaped(MlirType type);

/// Returns the element type of the shaped type.
MLIR_CAPI_EXPORTED MlirType mlirShapedTypeGetElementType(MlirType type);

/// Checks whether the given shaped type is ranked.
MLIR_CAPI_EXPORTED bool mlirShapedTypeHasRank(MlirType type);

/// Returns the rank of the given ranked shaped type.
MLIR_CAPI_EXPORTED int64_t mlirShapedTypeGetRank(MlirType type);

/// Checks whether the given shaped type has a static shape.
MLIR_CAPI_EXPORTED bool mlirShapedTypeHasStaticShape(MlirType type);

/// Checks wither the dim-th dimension of the given shaped type is dynamic.
MLIR_CAPI_EXPORTED bool mlirShapedTypeIsDynamicDim(MlirType type, intptr_t dim);

/// Returns the dim-th dimension of the given ranked shaped type.
MLIR_CAPI_EXPORTED int64_t mlirShapedTypeGetDimSize(MlirType type,
                                                    intptr_t dim);

/// Checks whether the given value is used as a placeholder for dynamic sizes
/// in shaped types.
MLIR_CAPI_EXPORTED bool mlirShapedTypeIsDynamicSize(int64_t size);

/// Returns the value indicating a dynamic size in a shaped type. Prefer
/// mlirShapedTypeIsDynamicSize to direct comparisons with this value.
MLIR_CAPI_EXPORTED int64_t mlirShapedTypeGetDynamicSize(void);

/// Checks whether the given value is used as a placeholder for dynamic strides
/// and offsets in shaped types.
MLIR_CAPI_EXPORTED bool mlirShapedTypeIsDynamicStrideOrOffset(int64_t val);

/// Returns the value indicating a dynamic stride or offset in a shaped type.
/// Prefer mlirShapedTypeGetDynamicStrideOrOffset to direct comparisons with
/// this value.
MLIR_CAPI_EXPORTED int64_t mlirShapedTypeGetDynamicStrideOrOffset(void);

//===----------------------------------------------------------------------===//
// Vector type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Vector type.
MLIR_CAPI_EXPORTED MlirTypeID mlirVectorTypeGetTypeID(void);

/// Checks whether the given type is a Vector type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAVector(MlirType type);

/// Creates a vector type of the shape identified by its rank and dimensions,
/// with the given element type in the same context as the element type. The
/// type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirVectorTypeGet(intptr_t rank,
                                              const int64_t *shape,
                                              MlirType elementType);

/// Same as "mlirVectorTypeGet" but returns a nullptr wrapping MlirType on
/// illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED MlirType mlirVectorTypeGetChecked(MlirLocation loc,
                                                     intptr_t rank,
                                                     const int64_t *shape,
                                                     MlirType elementType);

/// Creates a scalable vector type with the shape identified by its rank and
/// dimensions. A subset of dimensions may be marked as scalable via the
/// corresponding flag list, which is expected to have as many entries as the
/// rank of the vector. The vector is created in the same context as the element
/// type.
MLIR_CAPI_EXPORTED MlirType mlirVectorTypeGetScalable(intptr_t rank,
                                                      const int64_t *shape,
                                                      const bool *scalable,
                                                      MlirType elementType);

/// Same as "mlirVectorTypeGetScalable" but returns a nullptr wrapping MlirType
/// on illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED
MlirType mlirVectorTypeGetScalableChecked(MlirLocation loc, intptr_t rank,
                                          const int64_t *shape,
                                          const bool *scalable,
                                          MlirType elementType);

/// Checks whether the given vector type is scalable, i.e., has at least one
/// scalable dimension.
MLIR_CAPI_EXPORTED bool mlirVectorTypeIsScalable(MlirType type);

/// Checks whether the "dim"-th dimension of the given vector is scalable.
MLIR_CAPI_EXPORTED bool mlirVectorTypeIsDimScalable(MlirType type,
                                                    intptr_t dim);

//===----------------------------------------------------------------------===//
// Ranked / Unranked Tensor type.
//===----------------------------------------------------------------------===//

/// Checks whether the given type is a Tensor type.
MLIR_CAPI_EXPORTED bool mlirTypeIsATensor(MlirType type);

/// Returns the typeID of an RankedTensor type.
MLIR_CAPI_EXPORTED MlirTypeID mlirRankedTensorTypeGetTypeID(void);

/// Checks whether the given type is a ranked tensor type.
MLIR_CAPI_EXPORTED bool mlirTypeIsARankedTensor(MlirType type);

/// Returns the typeID of an UnrankedTensor type.
MLIR_CAPI_EXPORTED MlirTypeID mlirUnrankedTensorTypeGetTypeID(void);

/// Checks whether the given type is an unranked tensor type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAUnrankedTensor(MlirType type);

/// Creates a tensor type of a fixed rank with the given shape, element type,
/// and optional encoding in the same context as the element type. The type is
/// owned by the context. Tensor types without any specific encoding field
/// should assign mlirAttributeGetNull() to this parameter.
MLIR_CAPI_EXPORTED MlirType mlirRankedTensorTypeGet(intptr_t rank,
                                                    const int64_t *shape,
                                                    MlirType elementType,
                                                    MlirAttribute encoding);

/// Same as "mlirRankedTensorTypeGet" but returns a nullptr wrapping MlirType on
/// illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED MlirType mlirRankedTensorTypeGetChecked(
    MlirLocation loc, intptr_t rank, const int64_t *shape, MlirType elementType,
    MlirAttribute encoding);

/// Gets the 'encoding' attribute from the ranked tensor type, returning a null
/// attribute if none.
MLIR_CAPI_EXPORTED MlirAttribute mlirRankedTensorTypeGetEncoding(MlirType type);

/// Creates an unranked tensor type with the given element type in the same
/// context as the element type. The type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirUnrankedTensorTypeGet(MlirType elementType);

/// Same as "mlirUnrankedTensorTypeGet" but returns a nullptr wrapping MlirType
/// on illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED MlirType
mlirUnrankedTensorTypeGetChecked(MlirLocation loc, MlirType elementType);

//===----------------------------------------------------------------------===//
// Ranked / Unranked MemRef type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an MemRef type.
MLIR_CAPI_EXPORTED MlirTypeID mlirMemRefTypeGetTypeID(void);

/// Checks whether the given type is a MemRef type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAMemRef(MlirType type);

/// Returns the typeID of an UnrankedMemRef type.
MLIR_CAPI_EXPORTED MlirTypeID mlirUnrankedMemRefTypeGetTypeID(void);

/// Checks whether the given type is an UnrankedMemRef type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAUnrankedMemRef(MlirType type);

/// Creates a MemRef type with the given rank and shape, a potentially empty
/// list of affine layout maps, the given memory space and element type, in the
/// same context as element type. The type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirMemRefTypeGet(MlirType elementType,
                                              intptr_t rank,
                                              const int64_t *shape,
                                              MlirAttribute layout,
                                              MlirAttribute memorySpace);

/// Same as "mlirMemRefTypeGet" but returns a nullptr-wrapping MlirType o
/// illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED MlirType mlirMemRefTypeGetChecked(
    MlirLocation loc, MlirType elementType, intptr_t rank, const int64_t *shape,
    MlirAttribute layout, MlirAttribute memorySpace);

/// Creates a MemRef type with the given rank, shape, memory space and element
/// type in the same context as the element type. The type has no affine maps,
/// i.e. represents a default row-major contiguous memref. The type is owned by
/// the context.
MLIR_CAPI_EXPORTED MlirType
mlirMemRefTypeContiguousGet(MlirType elementType, intptr_t rank,
                            const int64_t *shape, MlirAttribute memorySpace);

/// Same as "mlirMemRefTypeContiguousGet" but returns a nullptr wrapping
/// MlirType on illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED MlirType mlirMemRefTypeContiguousGetChecked(
    MlirLocation loc, MlirType elementType, intptr_t rank, const int64_t *shape,
    MlirAttribute memorySpace);

/// Creates an Unranked MemRef type with the given element type and in the given
/// memory space. The type is owned by the context of element type.
MLIR_CAPI_EXPORTED MlirType
mlirUnrankedMemRefTypeGet(MlirType elementType, MlirAttribute memorySpace);

/// Same as "mlirUnrankedMemRefTypeGet" but returns a nullptr wrapping
/// MlirType on illegal arguments, emitting appropriate diagnostics.
MLIR_CAPI_EXPORTED MlirType mlirUnrankedMemRefTypeGetChecked(
    MlirLocation loc, MlirType elementType, MlirAttribute memorySpace);

/// Returns the layout of the given MemRef type.
MLIR_CAPI_EXPORTED MlirAttribute mlirMemRefTypeGetLayout(MlirType type);

/// Returns the affine map of the given MemRef type.
MLIR_CAPI_EXPORTED MlirAffineMap mlirMemRefTypeGetAffineMap(MlirType type);

/// Returns the memory space of the given MemRef type.
MLIR_CAPI_EXPORTED MlirAttribute mlirMemRefTypeGetMemorySpace(MlirType type);

/// Returns the strides of the MemRef if the layout map is in strided form.
/// Both strides and offset are out params. strides must point to pre-allocated
/// memory of length equal to the rank of the memref.
MLIR_CAPI_EXPORTED MlirLogicalResult mlirMemRefTypeGetStridesAndOffset(
    MlirType type, int64_t *strides, int64_t *offset);

/// Returns the memory spcae of the given Unranked MemRef type.
MLIR_CAPI_EXPORTED MlirAttribute
mlirUnrankedMemrefGetMemorySpace(MlirType type);

//===----------------------------------------------------------------------===//
// Tuple type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Tuple type.
MLIR_CAPI_EXPORTED MlirTypeID mlirTupleTypeGetTypeID(void);

/// Checks whether the given type is a tuple type.
MLIR_CAPI_EXPORTED bool mlirTypeIsATuple(MlirType type);

/// Creates a tuple type that consists of the given list of elemental types. The
/// type is owned by the context.
MLIR_CAPI_EXPORTED MlirType mlirTupleTypeGet(MlirContext ctx,
                                             intptr_t numElements,
                                             MlirType const *elements);

/// Returns the number of types contained in a tuple.
MLIR_CAPI_EXPORTED intptr_t mlirTupleTypeGetNumTypes(MlirType type);

/// Returns the pos-th type in the tuple type.
MLIR_CAPI_EXPORTED MlirType mlirTupleTypeGetType(MlirType type, intptr_t pos);

//===----------------------------------------------------------------------===//
// Function type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Function type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFunctionTypeGetTypeID(void);

/// Checks whether the given type is a function type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAFunction(MlirType type);

/// Creates a function type, mapping a list of input types to result types.
MLIR_CAPI_EXPORTED MlirType mlirFunctionTypeGet(MlirContext ctx,
                                                intptr_t numInputs,
                                                MlirType const *inputs,
                                                intptr_t numResults,
                                                MlirType const *results);

/// Returns the number of input types.
MLIR_CAPI_EXPORTED intptr_t mlirFunctionTypeGetNumInputs(MlirType type);

/// Returns the number of result types.
MLIR_CAPI_EXPORTED intptr_t mlirFunctionTypeGetNumResults(MlirType type);

/// Returns the pos-th input type.
MLIR_CAPI_EXPORTED MlirType mlirFunctionTypeGetInput(MlirType type,
                                                     intptr_t pos);

/// Returns the pos-th result type.
MLIR_CAPI_EXPORTED MlirType mlirFunctionTypeGetResult(MlirType type,
                                                      intptr_t pos);

//===----------------------------------------------------------------------===//
// Opaque type.
//===----------------------------------------------------------------------===//

/// Returns the typeID of an Opaque type.
MLIR_CAPI_EXPORTED MlirTypeID mlirOpaqueTypeGetTypeID(void);

/// Checks whether the given type is an opaque type.
MLIR_CAPI_EXPORTED bool mlirTypeIsAOpaque(MlirType type);

/// Creates an opaque type in the given context associated with the dialect
/// identified by its namespace. The type contains opaque byte data of the
/// specified length (data need not be null-terminated).
MLIR_CAPI_EXPORTED MlirType mlirOpaqueTypeGet(MlirContext ctx,
                                              MlirStringRef dialectNamespace,
                                              MlirStringRef typeData);

/// Returns the namespace of the dialect with which the given opaque type
/// is associated. The namespace string is owned by the context.
MLIR_CAPI_EXPORTED MlirStringRef
mlirOpaqueTypeGetDialectNamespace(MlirType type);

/// Returns the raw data as a string reference. The data remains live as long as
/// the context in which the type lives.
MLIR_CAPI_EXPORTED MlirStringRef mlirOpaqueTypeGetData(MlirType type);

#ifdef __cplusplus
}
#endif

#endif // MLIR_C_BUILTINTYPES_H