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#include <ATen/core/ATenOpList.h>
#include <ATen/core/dispatch/Dispatcher.h>
#include <ATen/record_function.h>
#include <torch/csrc/jit/frontend/tracer.h>
#include <torch/csrc/jit/ir/ir.h>
#include <torch/csrc/jit/runtime/operator.h>
namespace torch::jit {
namespace {
Operator createOperatorFromC10(const c10::OperatorHandle& op) {
return Operator(op, [op](Stack& stack) { op.callBoxed(stack); });
}
class RegistrationListener final : public c10::OpRegistrationListener {
public:
void onOperatorRegistered(const c10::OperatorHandle& op) override {
if (op.schema().name() == "aten::backward") {
// aten::backward has a manual wrapper in register_prim_ops_fulljit.cpp.
// We should not additionally export the c10 aten::backward op from
// native_functions.yaml to JIT. This special handling is needed because
// aten::backward requires AliasAnalysisKind::CONSERVATIVE but all ops
// from native_functions.yaml get AliasAnalysisKind::FROM_SCHEMA.
// TODO Find a better way to handle this.
return;
}
torch::jit::registerOperator(createOperatorFromC10(op));
}
void onOperatorDeregistered(const c10::OperatorHandle& op) override {
if (op.schema().name() == "aten::backward") {
// see comment in onOperatorRegistered for why aten::backward is excluded
return;
}
torch::jit::deregisterOperator(op.schema());
}
};
struct Registerer final {
// this immediately calls the listener on all existing ops,
// and calls it in future whenever a new op is registered
Registerer()
: listenerRAII(c10::Dispatcher::singleton().addRegistrationListener(
std::make_unique<RegistrationListener>())) {}
c10::RegistrationHandleRAII listenerRAII;
};
Registerer& registerer() {
static Registerer registerer;
return registerer;
}
// global instance to run its constructor on startup
[[maybe_unused]] Registerer& dummy = registerer();
} // namespace
void ensure_c10_registerer_defined() {
registerer();
}
} // namespace torch::jit
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