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IRModules.cpp
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IRModules.cpp
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//===- IRModules.cpp - IR Submodules of pybind module ---------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "IRModules.h"
#include "PybindUtils.h"
#include "mlir-c/Bindings/Python/Interop.h"
#include "mlir-c/Registration.h"
#include "mlir-c/StandardAttributes.h"
#include "mlir-c/StandardTypes.h"
#include "llvm/ADT/SmallVector.h"
#include <pybind11/stl.h>
namespace py = pybind11;
using namespace mlir;
using namespace mlir::python;
using llvm::SmallVector;
//------------------------------------------------------------------------------
// Docstrings (trivial, non-duplicated docstrings are included inline).
//------------------------------------------------------------------------------
static const char kContextCreateOperationDocstring[] =
R"(Creates a new operation.
Args:
name: Operation name (e.g. "dialect.operation").
location: A Location object.
results: Sequence of Type representing op result types.
attributes: Dict of str:Attribute.
successors: List of Block for the operation's successors.
regions: Number of regions to create.
Returns:
A new "detached" Operation object. Detached operations can be added
to blocks, which causes them to become "attached."
)";
static const char kContextParseDocstring[] =
R"(Parses a module's assembly format from a string.
Returns a new MlirModule or raises a ValueError if the parsing fails.
See also: https://mlir.llvm.org/docs/LangRef/
)";
static const char kContextParseTypeDocstring[] =
R"(Parses the assembly form of a type.
Returns a Type object or raises a ValueError if the type cannot be parsed.
See also: https://mlir.llvm.org/docs/LangRef/#type-system
)";
static const char kContextGetUnknownLocationDocstring[] =
R"(Gets a Location representing an unknown location)";
static const char kContextGetFileLocationDocstring[] =
R"(Gets a Location representing a file, line and column)";
static const char kOperationStrDunderDocstring[] =
R"(Prints the assembly form of the operation with default options.
If more advanced control over the assembly formatting or I/O options is needed,
use the dedicated print method, which supports keyword arguments to customize
behavior.
)";
static const char kTypeStrDunderDocstring[] =
R"(Prints the assembly form of the type.)";
static const char kDumpDocstring[] =
R"(Dumps a debug representation of the object to stderr.)";
static const char kAppendBlockDocstring[] =
R"(Appends a new block, with argument types as positional args.
Returns:
The created block.
)";
//------------------------------------------------------------------------------
// Conversion utilities.
//------------------------------------------------------------------------------
namespace {
/// Accumulates into a python string from a method that accepts an
/// MlirStringCallback.
struct PyPrintAccumulator {
py::list parts;
void *getUserData() { return this; }
MlirStringCallback getCallback() {
return [](const char *part, intptr_t size, void *userData) {
PyPrintAccumulator *printAccum =
static_cast<PyPrintAccumulator *>(userData);
py::str pyPart(part, size); // Decodes as UTF-8 by default.
printAccum->parts.append(std::move(pyPart));
};
}
py::str join() {
py::str delim("", 0);
return delim.attr("join")(parts);
}
};
/// Accumulates into a python string from a method that is expected to make
/// one (no more, no less) call to the callback (asserts internally on
/// violation).
struct PySinglePartStringAccumulator {
void *getUserData() { return this; }
MlirStringCallback getCallback() {
return [](const char *part, intptr_t size, void *userData) {
PySinglePartStringAccumulator *accum =
static_cast<PySinglePartStringAccumulator *>(userData);
assert(!accum->invoked &&
"PySinglePartStringAccumulator called back multiple times");
accum->invoked = true;
accum->value = py::str(part, size);
};
}
py::str takeValue() {
assert(invoked && "PySinglePartStringAccumulator not called back");
return std::move(value);
}
private:
py::str value;
bool invoked = false;
};
} // namespace
//------------------------------------------------------------------------------
// Type-checking utilities.
//------------------------------------------------------------------------------
namespace {
/// Checks whether the given type is an integer or float type.
int mlirTypeIsAIntegerOrFloat(MlirType type) {
return mlirTypeIsAInteger(type) || mlirTypeIsABF16(type) ||
mlirTypeIsAF16(type) || mlirTypeIsAF32(type) || mlirTypeIsAF64(type);
}
} // namespace
//------------------------------------------------------------------------------
// Collections.
//------------------------------------------------------------------------------
namespace {
class PyRegionIterator {
public:
PyRegionIterator(PyOperationRef operation)
: operation(std::move(operation)) {}
PyRegionIterator &dunderIter() { return *this; }
PyRegion dunderNext() {
operation->checkValid();
if (nextIndex >= mlirOperationGetNumRegions(operation->get())) {
throw py::stop_iteration();
}
MlirRegion region = mlirOperationGetRegion(operation->get(), nextIndex++);
return PyRegion(operation, region);
}
static void bind(py::module &m) {
py::class_<PyRegionIterator>(m, "RegionIterator")
.def("__iter__", &PyRegionIterator::dunderIter)
.def("__next__", &PyRegionIterator::dunderNext);
}
private:
PyOperationRef operation;
int nextIndex = 0;
};
/// Regions of an op are fixed length and indexed numerically so are represented
/// with a sequence-like container.
class PyRegionList {
public:
PyRegionList(PyOperationRef operation) : operation(std::move(operation)) {}
intptr_t dunderLen() {
operation->checkValid();
return mlirOperationGetNumRegions(operation->get());
}
PyRegion dunderGetItem(intptr_t index) {
// dunderLen checks validity.
if (index < 0 || index >= dunderLen()) {
throw SetPyError(PyExc_IndexError,
"attempt to access out of bounds region");
}
MlirRegion region = mlirOperationGetRegion(operation->get(), index);
return PyRegion(operation, region);
}
static void bind(py::module &m) {
py::class_<PyRegionList>(m, "ReqionSequence")
.def("__len__", &PyRegionList::dunderLen)
.def("__getitem__", &PyRegionList::dunderGetItem);
}
private:
PyOperationRef operation;
};
class PyBlockIterator {
public:
PyBlockIterator(PyOperationRef operation, MlirBlock next)
: operation(std::move(operation)), next(next) {}
PyBlockIterator &dunderIter() { return *this; }
PyBlock dunderNext() {
operation->checkValid();
if (mlirBlockIsNull(next)) {
throw py::stop_iteration();
}
PyBlock returnBlock(operation, next);
next = mlirBlockGetNextInRegion(next);
return returnBlock;
}
static void bind(py::module &m) {
py::class_<PyBlockIterator>(m, "BlockIterator")
.def("__iter__", &PyBlockIterator::dunderIter)
.def("__next__", &PyBlockIterator::dunderNext);
}
private:
PyOperationRef operation;
MlirBlock next;
};
/// Blocks are exposed by the C-API as a forward-only linked list. In Python,
/// we present them as a more full-featured list-like container but optimzie
/// it for forward iteration. Blocks are always owned by a region.
class PyBlockList {
public:
PyBlockList(PyOperationRef operation, MlirRegion region)
: operation(std::move(operation)), region(region) {}
PyBlockIterator dunderIter() {
operation->checkValid();
return PyBlockIterator(operation, mlirRegionGetFirstBlock(region));
}
intptr_t dunderLen() {
operation->checkValid();
intptr_t count = 0;
MlirBlock block = mlirRegionGetFirstBlock(region);
while (!mlirBlockIsNull(block)) {
count += 1;
block = mlirBlockGetNextInRegion(block);
}
return count;
}
PyBlock dunderGetItem(intptr_t index) {
operation->checkValid();
if (index < 0) {
throw SetPyError(PyExc_IndexError,
"attempt to access out of bounds block");
}
MlirBlock block = mlirRegionGetFirstBlock(region);
while (!mlirBlockIsNull(block)) {
if (index == 0) {
return PyBlock(operation, block);
}
block = mlirBlockGetNextInRegion(block);
index -= 1;
}
throw SetPyError(PyExc_IndexError, "attempt to access out of bounds block");
}
PyBlock appendBlock(py::args pyArgTypes) {
operation->checkValid();
llvm::SmallVector<MlirType, 4> argTypes;
argTypes.reserve(pyArgTypes.size());
for (auto &pyArg : pyArgTypes) {
argTypes.push_back(pyArg.cast<PyType &>().type);
}
MlirBlock block = mlirBlockCreate(argTypes.size(), argTypes.data());
mlirRegionAppendOwnedBlock(region, block);
return PyBlock(operation, block);
}
static void bind(py::module &m) {
py::class_<PyBlockList>(m, "BlockList")
.def("__getitem__", &PyBlockList::dunderGetItem)
.def("__iter__", &PyBlockList::dunderIter)
.def("__len__", &PyBlockList::dunderLen)
.def("append", &PyBlockList::appendBlock, kAppendBlockDocstring);
}
private:
PyOperationRef operation;
MlirRegion region;
};
class PyOperationIterator {
public:
PyOperationIterator(PyOperationRef parentOperation, MlirOperation next)
: parentOperation(std::move(parentOperation)), next(next) {}
PyOperationIterator &dunderIter() { return *this; }
py::object dunderNext() {
parentOperation->checkValid();
if (mlirOperationIsNull(next)) {
throw py::stop_iteration();
}
PyOperationRef returnOperation =
PyOperation::forOperation(parentOperation->getContext(), next);
next = mlirOperationGetNextInBlock(next);
return returnOperation.releaseObject();
}
static void bind(py::module &m) {
py::class_<PyOperationIterator>(m, "OperationIterator")
.def("__iter__", &PyOperationIterator::dunderIter)
.def("__next__", &PyOperationIterator::dunderNext);
}
private:
PyOperationRef parentOperation;
MlirOperation next;
};
/// Operations are exposed by the C-API as a forward-only linked list. In
/// Python, we present them as a more full-featured list-like container but
/// optimzie it for forward iteration. Iterable operations are always owned
/// by a block.
class PyOperationList {
public:
PyOperationList(PyOperationRef parentOperation, MlirBlock block)
: parentOperation(std::move(parentOperation)), block(block) {}
PyOperationIterator dunderIter() {
parentOperation->checkValid();
return PyOperationIterator(parentOperation,
mlirBlockGetFirstOperation(block));
}
intptr_t dunderLen() {
parentOperation->checkValid();
intptr_t count = 0;
MlirOperation childOp = mlirBlockGetFirstOperation(block);
while (!mlirOperationIsNull(childOp)) {
count += 1;
childOp = mlirOperationGetNextInBlock(childOp);
}
return count;
}
py::object dunderGetItem(intptr_t index) {
parentOperation->checkValid();
if (index < 0) {
throw SetPyError(PyExc_IndexError,
"attempt to access out of bounds operation");
}
MlirOperation childOp = mlirBlockGetFirstOperation(block);
while (!mlirOperationIsNull(childOp)) {
if (index == 0) {
return PyOperation::forOperation(parentOperation->getContext(), childOp)
.releaseObject();
}
childOp = mlirOperationGetNextInBlock(childOp);
index -= 1;
}
throw SetPyError(PyExc_IndexError,
"attempt to access out of bounds operation");
}
void insert(int index, PyOperation &newOperation) {
parentOperation->checkValid();
newOperation.checkValid();
if (index < 0) {
throw SetPyError(
PyExc_IndexError,
"only positive insertion indices are supported for operations");
}
if (newOperation.isAttached()) {
throw SetPyError(
PyExc_ValueError,
"attempt to insert an operation that has already been inserted");
}
// TODO: Needing to do this check is unfortunate, especially since it will
// be a forward-scan, just like the following call to
// mlirBlockInsertOwnedOperation. Switch to insert before/after once
// D88148 lands.
if (index > dunderLen()) {
throw SetPyError(PyExc_IndexError,
"attempt to insert operation past end");
}
mlirBlockInsertOwnedOperation(block, index, newOperation.get());
newOperation.setAttached();
// TODO: Rework the parentKeepAlive so as to avoid ownership hazards under
// the new ownership.
}
static void bind(py::module &m) {
py::class_<PyOperationList>(m, "OperationList")
.def("__getitem__", &PyOperationList::dunderGetItem)
.def("__iter__", &PyOperationList::dunderIter)
.def("__len__", &PyOperationList::dunderLen)
.def("insert", &PyOperationList::insert, py::arg("index"),
py::arg("operation"),
"Inserts an operation at an indexed position");
}
private:
PyOperationRef parentOperation;
MlirBlock block;
};
} // namespace
//------------------------------------------------------------------------------
// PyMlirContext
//------------------------------------------------------------------------------
PyMlirContext::PyMlirContext(MlirContext context) : context(context) {
py::gil_scoped_acquire acquire;
auto &liveContexts = getLiveContexts();
liveContexts[context.ptr] = this;
}
PyMlirContext::~PyMlirContext() {
// Note that the only public way to construct an instance is via the
// forContext method, which always puts the associated handle into
// liveContexts.
py::gil_scoped_acquire acquire;
getLiveContexts().erase(context.ptr);
mlirContextDestroy(context);
}
py::object PyMlirContext::getCapsule() {
return py::reinterpret_steal<py::object>(mlirPythonContextToCapsule(get()));
}
py::object PyMlirContext::createFromCapsule(py::object capsule) {
MlirContext rawContext = mlirPythonCapsuleToContext(capsule.ptr());
if (mlirContextIsNull(rawContext))
throw py::error_already_set();
return forContext(rawContext).releaseObject();
}
PyMlirContext *PyMlirContext::createNewContextForInit() {
MlirContext context = mlirContextCreate();
mlirRegisterAllDialects(context);
return new PyMlirContext(context);
}
PyMlirContextRef PyMlirContext::forContext(MlirContext context) {
py::gil_scoped_acquire acquire;
auto &liveContexts = getLiveContexts();
auto it = liveContexts.find(context.ptr);
if (it == liveContexts.end()) {
// Create.
PyMlirContext *unownedContextWrapper = new PyMlirContext(context);
py::object pyRef = py::cast(unownedContextWrapper);
assert(pyRef && "cast to py::object failed");
liveContexts[context.ptr] = unownedContextWrapper;
return PyMlirContextRef(unownedContextWrapper, std::move(pyRef));
}
// Use existing.
py::object pyRef = py::cast(it->second);
return PyMlirContextRef(it->second, std::move(pyRef));
}
PyMlirContext::LiveContextMap &PyMlirContext::getLiveContexts() {
static LiveContextMap liveContexts;
return liveContexts;
}
size_t PyMlirContext::getLiveCount() { return getLiveContexts().size(); }
size_t PyMlirContext::getLiveOperationCount() { return liveOperations.size(); }
py::object PyMlirContext::createOperation(
std::string name, PyLocation location,
llvm::Optional<std::vector<PyType *>> results,
llvm::Optional<py::dict> attributes,
llvm::Optional<std::vector<PyBlock *>> successors, int regions) {
llvm::SmallVector<MlirType, 4> mlirResults;
llvm::SmallVector<MlirBlock, 4> mlirSuccessors;
llvm::SmallVector<std::pair<std::string, MlirAttribute>, 4> mlirAttributes;
// General parameter validation.
if (regions < 0)
throw SetPyError(PyExc_ValueError, "number of regions must be >= 0");
// Unpack/validate results.
if (results) {
mlirResults.reserve(results->size());
for (PyType *result : *results) {
// TODO: Verify result type originate from the same context.
if (!result)
throw SetPyError(PyExc_ValueError, "result type cannot be None");
mlirResults.push_back(result->type);
}
}
// Unpack/validate attributes.
if (attributes) {
mlirAttributes.reserve(attributes->size());
for (auto &it : *attributes) {
auto name = it.first.cast<std::string>();
auto &attribute = it.second.cast<PyAttribute &>();
// TODO: Verify attribute originates from the same context.
mlirAttributes.emplace_back(std::move(name), attribute.attr);
}
}
// Unpack/validate successors.
if (successors) {
llvm::SmallVector<MlirBlock, 4> mlirSuccessors;
mlirSuccessors.reserve(successors->size());
for (auto *successor : *successors) {
// TODO: Verify successor originate from the same context.
if (!successor)
throw SetPyError(PyExc_ValueError, "successor block cannot be None");
mlirSuccessors.push_back(successor->get());
}
}
// Apply unpacked/validated to the operation state. Beyond this
// point, exceptions cannot be thrown or else the state will leak.
MlirOperationState state = mlirOperationStateGet(name.c_str(), location.loc);
if (!mlirResults.empty())
mlirOperationStateAddResults(&state, mlirResults.size(),
mlirResults.data());
if (!mlirAttributes.empty()) {
// Note that the attribute names directly reference bytes in
// mlirAttributes, so that vector must not be changed from here
// on.
llvm::SmallVector<MlirNamedAttribute, 4> mlirNamedAttributes;
mlirNamedAttributes.reserve(mlirAttributes.size());
for (auto &it : mlirAttributes)
mlirNamedAttributes.push_back(
mlirNamedAttributeGet(it.first.c_str(), it.second));
mlirOperationStateAddAttributes(&state, mlirNamedAttributes.size(),
mlirNamedAttributes.data());
}
if (!mlirSuccessors.empty())
mlirOperationStateAddSuccessors(&state, mlirSuccessors.size(),
mlirSuccessors.data());
if (regions) {
llvm::SmallVector<MlirRegion, 4> mlirRegions;
mlirRegions.resize(regions);
for (int i = 0; i < regions; ++i)
mlirRegions[i] = mlirRegionCreate();
mlirOperationStateAddOwnedRegions(&state, mlirRegions.size(),
mlirRegions.data());
}
// Construct the operation.
MlirOperation operation = mlirOperationCreate(&state);
return PyOperation::createDetached(getRef(), operation).releaseObject();
}
//------------------------------------------------------------------------------
// PyModule
//------------------------------------------------------------------------------
PyModuleRef PyModule::create(PyMlirContextRef contextRef, MlirModule module) {
PyModule *unownedModule = new PyModule(std::move(contextRef), module);
// Note that the default return value policy on cast is automatic_reference,
// which does not take ownership (delete will not be called).
// Just be explicit.
py::object pyRef =
py::cast(unownedModule, py::return_value_policy::take_ownership);
unownedModule->handle = pyRef;
return PyModuleRef(unownedModule, std::move(pyRef));
}
py::object PyModule::getCapsule() {
return py::reinterpret_steal<py::object>(mlirPythonModuleToCapsule(get()));
}
//------------------------------------------------------------------------------
// PyOperation
//------------------------------------------------------------------------------
PyOperation::PyOperation(PyMlirContextRef contextRef, MlirOperation operation)
: BaseContextObject(std::move(contextRef)), operation(operation) {}
PyOperation::~PyOperation() {
auto &liveOperations = getContext()->liveOperations;
assert(liveOperations.count(operation.ptr) == 1 &&
"destroying operation not in live map");
liveOperations.erase(operation.ptr);
if (!isAttached()) {
mlirOperationDestroy(operation);
}
}
PyOperationRef PyOperation::createInstance(PyMlirContextRef contextRef,
MlirOperation operation,
py::object parentKeepAlive) {
auto &liveOperations = contextRef->liveOperations;
// Create.
PyOperation *unownedOperation =
new PyOperation(std::move(contextRef), operation);
// Note that the default return value policy on cast is automatic_reference,
// which does not take ownership (delete will not be called).
// Just be explicit.
py::object pyRef =
py::cast(unownedOperation, py::return_value_policy::take_ownership);
unownedOperation->handle = pyRef;
if (parentKeepAlive) {
unownedOperation->parentKeepAlive = std::move(parentKeepAlive);
}
liveOperations[operation.ptr] = std::make_pair(pyRef, unownedOperation);
return PyOperationRef(unownedOperation, std::move(pyRef));
}
PyOperationRef PyOperation::forOperation(PyMlirContextRef contextRef,
MlirOperation operation,
py::object parentKeepAlive) {
auto &liveOperations = contextRef->liveOperations;
auto it = liveOperations.find(operation.ptr);
if (it == liveOperations.end()) {
// Create.
return createInstance(std::move(contextRef), operation,
std::move(parentKeepAlive));
}
// Use existing.
PyOperation *existing = it->second.second;
assert(existing->parentKeepAlive.is(parentKeepAlive));
py::object pyRef = py::reinterpret_borrow<py::object>(it->second.first);
return PyOperationRef(existing, std::move(pyRef));
}
PyOperationRef PyOperation::createDetached(PyMlirContextRef contextRef,
MlirOperation operation,
py::object parentKeepAlive) {
auto &liveOperations = contextRef->liveOperations;
assert(liveOperations.count(operation.ptr) == 0 &&
"cannot create detached operation that already exists");
(void)liveOperations;
PyOperationRef created = createInstance(std::move(contextRef), operation,
std::move(parentKeepAlive));
created->attached = false;
return created;
}
void PyOperation::checkValid() {
if (!valid) {
throw SetPyError(PyExc_RuntimeError, "the operation has been invalidated");
}
}
//------------------------------------------------------------------------------
// PyAttribute.
//------------------------------------------------------------------------------
bool PyAttribute::operator==(const PyAttribute &other) {
return mlirAttributeEqual(attr, other.attr);
}
//------------------------------------------------------------------------------
// PyNamedAttribute.
//------------------------------------------------------------------------------
PyNamedAttribute::PyNamedAttribute(MlirAttribute attr, std::string ownedName)
: ownedName(new std::string(std::move(ownedName))) {
namedAttr = mlirNamedAttributeGet(this->ownedName->c_str(), attr);
}
//------------------------------------------------------------------------------
// PyType.
//------------------------------------------------------------------------------
bool PyType::operator==(const PyType &other) {
return mlirTypeEqual(type, other.type);
}
//------------------------------------------------------------------------------
// Standard attribute subclasses.
//------------------------------------------------------------------------------
namespace {
/// CRTP base classes for Python attributes that subclass Attribute and should
/// be castable from it (i.e. via something like StringAttr(attr)).
/// By default, attribute class hierarchies are one level deep (i.e. a
/// concrete attribute class extends PyAttribute); however, intermediate
/// python-visible base classes can be modeled by specifying a BaseTy.
template <typename DerivedTy, typename BaseTy = PyAttribute>
class PyConcreteAttribute : public BaseTy {
public:
// Derived classes must define statics for:
// IsAFunctionTy isaFunction
// const char *pyClassName
using ClassTy = py::class_<DerivedTy, PyAttribute>;
using IsAFunctionTy = int (*)(MlirAttribute);
PyConcreteAttribute() = default;
PyConcreteAttribute(PyMlirContextRef contextRef, MlirAttribute attr)
: BaseTy(std::move(contextRef), attr) {}
PyConcreteAttribute(PyAttribute &orig)
: PyConcreteAttribute(orig.getContext(), castFrom(orig)) {}
static MlirAttribute castFrom(PyAttribute &orig) {
if (!DerivedTy::isaFunction(orig.attr)) {
auto origRepr = py::repr(py::cast(orig)).cast<std::string>();
throw SetPyError(PyExc_ValueError,
llvm::Twine("Cannot cast attribute to ") +
DerivedTy::pyClassName + " (from " + origRepr + ")");
}
return orig.attr;
}
static void bind(py::module &m) {
auto cls = ClassTy(m, DerivedTy::pyClassName);
cls.def(py::init<PyAttribute &>(), py::keep_alive<0, 1>());
DerivedTy::bindDerived(cls);
}
/// Implemented by derived classes to add methods to the Python subclass.
static void bindDerived(ClassTy &m) {}
};
class PyStringAttribute : public PyConcreteAttribute<PyStringAttribute> {
public:
static constexpr IsAFunctionTy isaFunction = mlirAttributeIsAString;
static constexpr const char *pyClassName = "StringAttr";
using PyConcreteAttribute::PyConcreteAttribute;
static void bindDerived(ClassTy &c) {
c.def_static(
"get",
[](PyMlirContext &context, std::string value) {
MlirAttribute attr =
mlirStringAttrGet(context.get(), value.size(), &value[0]);
return PyStringAttribute(context.getRef(), attr);
},
"Gets a uniqued string attribute");
c.def_static(
"get_typed",
[](PyType &type, std::string value) {
MlirAttribute attr =
mlirStringAttrTypedGet(type.type, value.size(), &value[0]);
return PyStringAttribute(type.getContext(), attr);
},
"Gets a uniqued string attribute associated to a type");
c.def_property_readonly(
"value",
[](PyStringAttribute &self) {
MlirStringRef stringRef = mlirStringAttrGetValue(self.attr);
return py::str(stringRef.data, stringRef.length);
},
"Returns the value of the string attribute");
}
};
} // namespace
//------------------------------------------------------------------------------
// Standard type subclasses.
//------------------------------------------------------------------------------
namespace {
/// CRTP base classes for Python types that subclass Type and should be
/// castable from it (i.e. via something like IntegerType(t)).
/// By default, type class hierarchies are one level deep (i.e. a
/// concrete type class extends PyType); however, intermediate python-visible
/// base classes can be modeled by specifying a BaseTy.
template <typename DerivedTy, typename BaseTy = PyType>
class PyConcreteType : public BaseTy {
public:
// Derived classes must define statics for:
// IsAFunctionTy isaFunction
// const char *pyClassName
using ClassTy = py::class_<DerivedTy, BaseTy>;
using IsAFunctionTy = int (*)(MlirType);
PyConcreteType() = default;
PyConcreteType(PyMlirContextRef contextRef, MlirType t)
: BaseTy(std::move(contextRef), t) {}
PyConcreteType(PyType &orig)
: PyConcreteType(orig.getContext(), castFrom(orig)) {}
static MlirType castFrom(PyType &orig) {
if (!DerivedTy::isaFunction(orig.type)) {
auto origRepr = py::repr(py::cast(orig)).cast<std::string>();
throw SetPyError(PyExc_ValueError, llvm::Twine("Cannot cast type to ") +
DerivedTy::pyClassName +
" (from " + origRepr + ")");
}
return orig.type;
}
static void bind(py::module &m) {
auto cls = ClassTy(m, DerivedTy::pyClassName);
cls.def(py::init<PyType &>(), py::keep_alive<0, 1>());
DerivedTy::bindDerived(cls);
}
/// Implemented by derived classes to add methods to the Python subclass.
static void bindDerived(ClassTy &m) {}
};
class PyIntegerType : public PyConcreteType<PyIntegerType> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAInteger;
static constexpr const char *pyClassName = "IntegerType";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def_static(
"get_signless",
[](PyMlirContext &context, unsigned width) {
MlirType t = mlirIntegerTypeGet(context.get(), width);
return PyIntegerType(context.getRef(), t);
},
"Create a signless integer type");
c.def_static(
"get_signed",
[](PyMlirContext &context, unsigned width) {
MlirType t = mlirIntegerTypeSignedGet(context.get(), width);
return PyIntegerType(context.getRef(), t);
},
"Create a signed integer type");
c.def_static(
"get_unsigned",
[](PyMlirContext &context, unsigned width) {
MlirType t = mlirIntegerTypeUnsignedGet(context.get(), width);
return PyIntegerType(context.getRef(), t);
},
"Create an unsigned integer type");
c.def_property_readonly(
"width",
[](PyIntegerType &self) { return mlirIntegerTypeGetWidth(self.type); },
"Returns the width of the integer type");
c.def_property_readonly(
"is_signless",
[](PyIntegerType &self) -> bool {
return mlirIntegerTypeIsSignless(self.type);
},
"Returns whether this is a signless integer");
c.def_property_readonly(
"is_signed",
[](PyIntegerType &self) -> bool {
return mlirIntegerTypeIsSigned(self.type);
},
"Returns whether this is a signed integer");
c.def_property_readonly(
"is_unsigned",
[](PyIntegerType &self) -> bool {
return mlirIntegerTypeIsUnsigned(self.type);
},
"Returns whether this is an unsigned integer");
}
};
/// Index Type subclass - IndexType.
class PyIndexType : public PyConcreteType<PyIndexType> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAIndex;
static constexpr const char *pyClassName = "IndexType";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def(py::init([](PyMlirContext &context) {
MlirType t = mlirIndexTypeGet(context.get());
return PyIndexType(context.getRef(), t);
}),
"Create a index type.");
}
};
/// Floating Point Type subclass - BF16Type.
class PyBF16Type : public PyConcreteType<PyBF16Type> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsABF16;
static constexpr const char *pyClassName = "BF16Type";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def(py::init([](PyMlirContext &context) {
MlirType t = mlirBF16TypeGet(context.get());
return PyBF16Type(context.getRef(), t);
}),
"Create a bf16 type.");
}
};
/// Floating Point Type subclass - F16Type.
class PyF16Type : public PyConcreteType<PyF16Type> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAF16;
static constexpr const char *pyClassName = "F16Type";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def(py::init([](PyMlirContext &context) {
MlirType t = mlirF16TypeGet(context.get());
return PyF16Type(context.getRef(), t);
}),
"Create a f16 type.");
}
};
/// Floating Point Type subclass - F32Type.
class PyF32Type : public PyConcreteType<PyF32Type> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAF32;
static constexpr const char *pyClassName = "F32Type";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def(py::init([](PyMlirContext &context) {
MlirType t = mlirF32TypeGet(context.get());
return PyF32Type(context.getRef(), t);
}),
"Create a f32 type.");
}
};
/// Floating Point Type subclass - F64Type.
class PyF64Type : public PyConcreteType<PyF64Type> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAF64;
static constexpr const char *pyClassName = "F64Type";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def(py::init([](PyMlirContext &context) {
MlirType t = mlirF64TypeGet(context.get());
return PyF64Type(context.getRef(), t);
}),
"Create a f64 type.");
}
};
/// None Type subclass - NoneType.
class PyNoneType : public PyConcreteType<PyNoneType> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsANone;
static constexpr const char *pyClassName = "NoneType";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def(py::init([](PyMlirContext &context) {
MlirType t = mlirNoneTypeGet(context.get());
return PyNoneType(context.getRef(), t);
}),
"Create a none type.");
}
};
/// Complex Type subclass - ComplexType.
class PyComplexType : public PyConcreteType<PyComplexType> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAComplex;
static constexpr const char *pyClassName = "ComplexType";
using PyConcreteType::PyConcreteType;
static void bindDerived(ClassTy &c) {
c.def_static(
"get_complex",
[](PyType &elementType) {
// The element must be a floating point or integer scalar type.
if (mlirTypeIsAIntegerOrFloat(elementType.type)) {
MlirType t = mlirComplexTypeGet(elementType.type);
return PyComplexType(elementType.getContext(), t);
}
throw SetPyError(
PyExc_ValueError,
llvm::Twine("invalid '") +
py::repr(py::cast(elementType)).cast<std::string>() +
"' and expected floating point or integer type.");
},
"Create a complex type");
c.def_property_readonly(
"element_type",