94 lines
3.5 KiB
C++
94 lines
3.5 KiB
C++
/* @file pyjit.cpp */
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#include "pyjit.hpp"
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#include "xo/pyexpression/pyexpression.hpp"
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#include "xo/jit/Jit.hpp"
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#include "xo/pyutil/pyutil.hpp"
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#include <pybind11/stl.h>
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namespace xo {
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struct XferFn : public ref::Refcount {
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using fptr_type = double (*) (double);
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explicit XferFn(fptr_type fptr) : fptr_{fptr} {}
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double operator() (double x) { return (*fptr_)(x); }
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fptr_type fptr_;
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};
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namespace jit {
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using xo::ast::Expression;
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using xo::ref::rp;
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using xo::ref::unowned_ptr;
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namespace py = pybind11;
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PYBIND11_MODULE(XO_PYJIT_MODULE_NAME(), m) {
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// e.g. for xo::ast::Expression
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XO_PYEXPRESSION_IMPORT_MODULE(); // py::module_::import("pyexpression");
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m.doc() = "pybind11 plugin for xo-jit";
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py::class_<Jit, rp<Jit>>(m, "Jit")
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.def_static("make", &Jit::make,
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py::doc("create Jit instance. Not threadsafe,"
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" but does not share resources with any other Jit instance"))
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.def_property_readonly("target_triple", &Jit::target_triple,
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py::doc("string describing target host for code generation"))
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.def("get_function_name_v", &Jit::get_function_name_v,
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py::doc("get vector of function names defined in jit module"))
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.def("dump_execution_session", &Jit::dump_execution_session,
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py::doc("write to console with state of all jit-owned dynamic libraries"))
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.def("codegen",
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[](Jit & jit, const rp<Expression> & expr) {
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return jit.codegen(expr.borrow());
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},
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py::arg("x"),
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py::doc("generate llvm (IR) code for Expression x"),
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/* we're assuming llvm-generated code lives for as long as the Jit
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* instance that created it.
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*
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* RC 14jun2024 - I think this is true, modulo use of llvm resource trackers.
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*/
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py::return_value_policy::reference_internal)
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.def("machgen_current_module", &Jit::machgen_current_module,
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py::doc("Make current module available for execution via the jit.\n"
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"Adds all functions generated since last call to this method."))
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.def("lookup_dbl_dbl_fn",
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[](Jit & jit, const std::string & symbol) {
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auto llvm_addr = jit.lookup_symbol(symbol);
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auto fn_addr = llvm_addr.toPtr<double (*) (double)>();
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return new XferFn(fn_addr);
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})
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;
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py::class_<XferFn, rp<XferFn>>(m, "XferFn")
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.def("__call__",
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[](XferFn & self, double x) { return self(x); }
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)
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;
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py::class_<llvm::Value,
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unowned_ptr<llvm::Value>>(m, "llvm_Value")
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.def("print",
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[](llvm::Value & x) {
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std::string buf;
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llvm::raw_string_ostream ss(buf);
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x.print(ss);
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return buf;
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})
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// .def("__repr__",
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// &Jit::display_string)
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;
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}
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} /*namespace jit*/
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} /*namespace xo*/
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/* end pyjit.cpp */
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