forked from OSchip/llvm-project
110 lines
4.0 KiB
C
110 lines
4.0 KiB
C
/*===-- mlir-c/Core.h - Core Library C Interface ------------------*- C -*-===*\
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|* *|
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|* Part of the LLVM Project, under the Apache License v2.0 with LLVM *|
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|* Exceptions. *|
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|* See https://llvm.org/LICENSE.txt for license information. *|
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|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception *|
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|* *|
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|*===----------------------------------------------------------------------===*|
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|* *|
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|* This header declares the C interface to MLIR. *|
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|* *|
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\*===----------------------------------------------------------------------===*/
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#ifndef MLIR_C_CORE_H
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#define MLIR_C_CORE_H
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#ifdef __cplusplus
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#include <cstdint>
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extern "C" {
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#else
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#include <stdint.h>
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#endif
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/// Opaque MLIR types.
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/// Opaque C type for mlir::MLIRContext*.
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typedef void *mlir_context_t;
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/// Opaque C type for mlir::Type.
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typedef const void *mlir_type_t;
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/// Opaque C type for mlir::FuncOp.
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typedef void *mlir_func_t;
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/// Opaque C type for mlir::Attribute.
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typedef const void *mlir_attr_t;
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/// Simple C lists for non-owning mlir Opaque C types.
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/// Recommended usage is construction from the `data()` and `size()` of a scoped
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/// owning SmallVectorImpl<...> and passing to one of the C functions declared
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/// later in this file.
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/// Once the function returns and the proper EDSC has been constructed,
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/// resources are freed by exiting the scope.
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typedef struct {
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int64_t *values;
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uint64_t n;
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} int64_list_t;
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typedef struct {
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mlir_type_t *types;
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uint64_t n;
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} mlir_type_list_t;
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typedef struct {
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const char *name;
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mlir_attr_t value;
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} mlir_named_attr_t;
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typedef struct {
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mlir_named_attr_t *list;
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uint64_t n;
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} mlir_named_attr_list_t;
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/// Minimal C API for exposing EDSCs to Swift, Python and other languages.
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/// Returns an `mlir::MemRefType` of the element type `elemType` and shape
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/// `sizes`.
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mlir_type_t makeMemRefType(mlir_context_t context, mlir_type_t elemType,
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int64_list_t sizes);
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/// Returns an `mlir::FunctionType` of the element type `elemType` and shape
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/// `sizes`.
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mlir_type_t makeFunctionType(mlir_context_t context, mlir_type_list_t inputs,
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mlir_type_list_t outputs);
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/// Returns an `mlir::IndexType`.
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mlir_type_t makeIndexType(mlir_context_t context);
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/// Returns an `mlir::IntegerAttr` of the specified type that contains the given
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/// value.
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mlir_attr_t makeIntegerAttr(mlir_type_t type, int64_t value);
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/// Returns an `mlir::BoolAttr` with the given value.
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mlir_attr_t makeBoolAttr(mlir_context_t context, bool value);
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/// Returns an `mlir::FloatAttr` with the given value.
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mlir_attr_t makeFloatAttr(mlir_context_t context, float value);
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/// Returns an `mlir::StringAttr` with the given value.
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mlir_attr_t makeStringAttr(mlir_context_t context, const char *value);
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/// Parses an MLIR type from the string `type` in the given context. Returns a
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/// NULL type on error. If non-NULL, `charsRead` will contain the number of
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/// characters that were processed by the parser.
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mlir_type_t mlirParseType(const char *type, mlir_context_t context,
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uint64_t *charsRead);
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/// Returns the arity of `function`.
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unsigned getFunctionArity(mlir_func_t function);
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/// Returns the rank of the `function` argument at position `pos`.
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/// If the argument is of MemRefType, this returns the rank of the MemRef.
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/// Otherwise returns `0`.
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/// TODO(ntv): support more than MemRefType and scalar Type.
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unsigned getRankOfFunctionArgument(mlir_func_t function, unsigned pos);
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/// Returns an opaque mlir::Type of the `function` argument at position `pos`.
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mlir_type_t getTypeOfFunctionArgument(mlir_func_t function, unsigned pos);
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#ifdef __cplusplus
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} // end extern "C"
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#endif
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#endif // MLIR_C_CORE_H
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