7c850867b9
This PR adds "value casting", i.e., a mechanism to wrap `ir.Value` in a proxy class that overloads dunders such as `__add__`, `__sub__`, and `__mul__` for fun and great profit. This is thematically similar tobfb1ba7526and9566ee2806. The example in the test demonstrates the value of the feature (no pun intended): ```python @register_value_caster(F16Type.static_typeid) @register_value_caster(F32Type.static_typeid) @register_value_caster(F64Type.static_typeid) @register_value_caster(IntegerType.static_typeid) class ArithValue(Value): __add__ = partialmethod(_binary_op, op="add") __sub__ = partialmethod(_binary_op, op="sub") __mul__ = partialmethod(_binary_op, op="mul") a = arith.constant(value=FloatAttr.get(f16_t, 42.42)) b = a + a # CHECK: ArithValue(%0 = arith.addf %cst, %cst : f16) print(b) a = arith.constant(value=FloatAttr.get(f32_t, 42.42)) b = a - a # CHECK: ArithValue(%1 = arith.subf %cst_0, %cst_0 : f32) print(b) a = arith.constant(value=FloatAttr.get(f64_t, 42.42)) b = a * a # CHECK: ArithValue(%2 = arith.mulf %cst_1, %cst_1 : f64) print(b) ``` **EDIT**: this now goes through the bindings and thus supports automatic casting of `OpResult` (including as an element of `OpResultList`), `BlockArgument` (including as an element of `BlockArgumentList`), as well as `Value`.
124 lines
4.9 KiB
C++
124 lines
4.9 KiB
C++
//===- MainModule.cpp - Main pybind module --------------------------------===//
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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 "PybindUtils.h"
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#include "Globals.h"
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#include "IRModule.h"
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#include "Pass.h"
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namespace py = pybind11;
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using namespace mlir;
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using namespace py::literals;
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using namespace mlir::python;
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// -----------------------------------------------------------------------------
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// Module initialization.
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// -----------------------------------------------------------------------------
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PYBIND11_MODULE(_mlir, m) {
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m.doc() = "MLIR Python Native Extension";
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py::class_<PyGlobals>(m, "_Globals", py::module_local())
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.def_property("dialect_search_modules",
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&PyGlobals::getDialectSearchPrefixes,
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&PyGlobals::setDialectSearchPrefixes)
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.def(
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"append_dialect_search_prefix",
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[](PyGlobals &self, std::string moduleName) {
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self.getDialectSearchPrefixes().push_back(std::move(moduleName));
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},
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"module_name"_a)
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.def(
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"_check_dialect_module_loaded",
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[](PyGlobals &self, const std::string &dialectNamespace) {
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return self.loadDialectModule(dialectNamespace);
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},
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"dialect_namespace"_a)
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.def("_register_dialect_impl", &PyGlobals::registerDialectImpl,
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"dialect_namespace"_a, "dialect_class"_a,
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"Testing hook for directly registering a dialect")
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.def("_register_operation_impl", &PyGlobals::registerOperationImpl,
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"operation_name"_a, "operation_class"_a, py::kw_only(),
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"replace"_a = false,
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"Testing hook for directly registering an operation");
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// Aside from making the globals accessible to python, having python manage
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// it is necessary to make sure it is destroyed (and releases its python
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// resources) properly.
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m.attr("globals") =
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py::cast(new PyGlobals, py::return_value_policy::take_ownership);
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// Registration decorators.
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m.def(
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"register_dialect",
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[](py::object pyClass) {
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std::string dialectNamespace =
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pyClass.attr("DIALECT_NAMESPACE").cast<std::string>();
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PyGlobals::get().registerDialectImpl(dialectNamespace, pyClass);
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return pyClass;
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},
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"dialect_class"_a,
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"Class decorator for registering a custom Dialect wrapper");
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m.def(
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"register_operation",
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[](const py::object &dialectClass, bool replace) -> py::cpp_function {
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return py::cpp_function(
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[dialectClass, replace](py::object opClass) -> py::object {
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std::string operationName =
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opClass.attr("OPERATION_NAME").cast<std::string>();
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PyGlobals::get().registerOperationImpl(operationName, opClass,
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replace);
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// Dict-stuff the new opClass by name onto the dialect class.
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py::object opClassName = opClass.attr("__name__");
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dialectClass.attr(opClassName) = opClass;
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return opClass;
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});
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},
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"dialect_class"_a, py::kw_only(), "replace"_a = false,
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"Produce a class decorator for registering an Operation class as part of "
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"a dialect");
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m.def(
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MLIR_PYTHON_CAPI_TYPE_CASTER_REGISTER_ATTR,
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[](MlirTypeID mlirTypeID, bool replace) -> py::cpp_function {
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return py::cpp_function([mlirTypeID,
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replace](py::object typeCaster) -> py::object {
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PyGlobals::get().registerTypeCaster(mlirTypeID, typeCaster, replace);
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return typeCaster;
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});
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},
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"typeid"_a, py::kw_only(), "replace"_a = false,
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"Register a type caster for casting MLIR types to custom user types.");
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m.def(
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MLIR_PYTHON_CAPI_VALUE_CASTER_REGISTER_ATTR,
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[](MlirTypeID mlirTypeID, bool replace) -> py::cpp_function {
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return py::cpp_function(
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[mlirTypeID, replace](py::object valueCaster) -> py::object {
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PyGlobals::get().registerValueCaster(mlirTypeID, valueCaster,
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replace);
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return valueCaster;
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});
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},
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"typeid"_a, py::kw_only(), "replace"_a = false,
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"Register a value caster for casting MLIR values to custom user values.");
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// Define and populate IR submodule.
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auto irModule = m.def_submodule("ir", "MLIR IR Bindings");
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populateIRCore(irModule);
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populateIRAffine(irModule);
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populateIRAttributes(irModule);
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populateIRInterfaces(irModule);
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populateIRTypes(irModule);
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// Define and populate PassManager submodule.
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auto passModule =
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m.def_submodule("passmanager", "MLIR Pass Management Bindings");
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populatePassManagerSubmodule(passModule);
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}
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