bfb1ba7526
depends on D150839
This diff uses `MlirTypeID` to register `TypeCaster`s (i.e., `[](PyType pyType) -> DerivedTy { return pyType; }`) for all concrete types (i.e., `PyConcrete<...>`) that are then queried for (by `MlirTypeID`) and called in `struct type_caster<MlirType>::cast`. The result is that anywhere an `MlirType mlirType` is returned from a python binding, that `mlirType` is automatically cast to the correct concrete type. For example:
```
c0 = arith.ConstantOp(f32, 0.0)
# CHECK: F32Type(f32)
print(repr(c0.result.type))
unranked_tensor_type = UnrankedTensorType.get(f32)
unranked_tensor = tensor.FromElementsOp(unranked_tensor_type, [c0]).result
# CHECK: UnrankedTensorType
print(type(unranked_tensor.type).__name__)
# CHECK: UnrankedTensorType(tensor<*xf32>)
print(repr(unranked_tensor.type))
```
This functionality immediately extends to typed attributes (i.e., `attr.type`).
The diff also implements similar functionality for `mlir_type_subclass`es but in a slightly different way - for such types (which have no cpp corresponding `class` or `struct`) the user must provide a type caster in python (similar to how `AttrBuilder` works) or in cpp as a `py::cpp_function`.
Reviewed By: ftynse
Differential Revision: https://reviews.llvm.org/D150927
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
//===- Support.cpp - Helpers for C interface to MLIR API ------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM 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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#include "mlir/CAPI/Support.h"
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#include "llvm/ADT/StringRef.h"
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#include <cstring>
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MlirStringRef mlirStringRefCreateFromCString(const char *str) {
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return mlirStringRefCreate(str, strlen(str));
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}
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bool mlirStringRefEqual(MlirStringRef string, MlirStringRef other) {
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return llvm::StringRef(string.data, string.length) ==
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llvm::StringRef(other.data, other.length);
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}
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//===----------------------------------------------------------------------===//
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// TypeID API.
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//===----------------------------------------------------------------------===//
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MlirTypeID mlirTypeIDCreate(const void *ptr) {
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assert(reinterpret_cast<uintptr_t>(ptr) % 8 == 0 &&
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"ptr must be 8 byte aligned");
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// This is essentially a no-op that returns back `ptr`, but by going through
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// the `TypeID` functions we can get compiler errors in case the `TypeID`
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// api/representation changes
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return wrap(mlir::TypeID::getFromOpaquePointer(ptr));
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}
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bool mlirTypeIDEqual(MlirTypeID typeID1, MlirTypeID typeID2) {
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return unwrap(typeID1) == unwrap(typeID2);
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}
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size_t mlirTypeIDHashValue(MlirTypeID typeID) {
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return hash_value(unwrap(typeID));
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}
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//===----------------------------------------------------------------------===//
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// TypeIDAllocator API.
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//===----------------------------------------------------------------------===//
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MlirTypeIDAllocator mlirTypeIDAllocatorCreate() {
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return wrap(new mlir::TypeIDAllocator());
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}
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void mlirTypeIDAllocatorDestroy(MlirTypeIDAllocator allocator) {
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delete unwrap(allocator);
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}
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MlirTypeID mlirTypeIDAllocatorAllocateTypeID(MlirTypeIDAllocator allocator) {
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return wrap(unwrap(allocator)->allocate());
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}
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