forked from M-Labs/nac3
core/ndstrides: introduce NDArrayObject & refactor reshape
This commit is contained in:
parent
7436513b64
commit
3dc4b17310
@ -1,3 +1,4 @@
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pub mod factory;
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pub mod object;
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pub mod util;
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pub mod view;
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68
nac3core/src/codegen/numpy_new/object.rs
Normal file
68
nac3core/src/codegen/numpy_new/object.rs
Normal file
@ -0,0 +1,68 @@
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use inkwell::values::{BasicValue, BasicValueEnum};
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use crate::{
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codegen::{model::*, structure::ndarray::NpArray, CodeGenContext},
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toplevel::numpy::unpack_ndarray_var_tys,
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typecheck::typedef::{Type, TypeEnum},
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};
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/// An LLVM ndarray instance with its typechecker [`Type`]s.
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#[derive(Debug, Clone, Copy)]
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pub struct NDArrayObject<'ctx> {
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pub dtype: Type,
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pub ndims: Type,
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pub instance: Ptr<'ctx, StructModel<NpArray>>,
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}
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/// An LLVM numpy scalar with its [`Type`].
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#[derive(Debug, Clone, Copy)]
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pub struct ScalarObject<'ctx> {
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pub dtype: Type,
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pub value: BasicValueEnum<'ctx>,
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}
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#[derive(Debug, Clone, Copy)]
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pub enum ScalarOrNDArray<'ctx> {
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Scalar(ScalarObject<'ctx>),
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NDArray(NDArrayObject<'ctx>),
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}
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impl<'ctx> ScalarOrNDArray<'ctx> {
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/// Get the underlying [`BasicValueEnum<'ctx>`] of this [`ScalarOrNDArray`].
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fn to_basic_value_enum(self) -> BasicValueEnum<'ctx> {
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match self {
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ScalarOrNDArray::Scalar(scalar) => scalar.value,
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ScalarOrNDArray::NDArray(ndarray) => ndarray.instance.value.as_basic_value_enum(),
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}
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}
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}
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impl<'ctx> From<ScalarOrNDArray<'ctx>> for BasicValueEnum<'ctx> {
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fn from(input: ScalarOrNDArray<'ctx>) -> BasicValueEnum<'ctx> {
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input.to_basic_value_enum()
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}
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}
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/// Split an [`BasicValueEnum<'ctx>`] into a [`ScalarOrNDArray`] depending
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/// on its [`Type`].
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pub fn split_scalar_or_ndarray<'ctx>(
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tyctx: TypeContext<'ctx>,
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ctx: &mut CodeGenContext<'ctx, '_>,
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input: BasicValueEnum<'ctx>,
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input_ty: Type,
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) -> ScalarOrNDArray<'ctx> {
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let pndarray_model = PtrModel(StructModel(NpArray));
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let input_ty_enum = ctx.unifier.get_ty(input_ty);
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match &*input_ty_enum {
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TypeEnum::TObj { obj_id, .. }
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if *obj_id == ctx.primitives.ndarray.obj_id(&ctx.unifier).unwrap() =>
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{
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let value = pndarray_model.check_value(tyctx, ctx.ctx, input).unwrap();
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let (dtype, ndims) = unpack_ndarray_var_tys(&mut ctx.unifier, input_ty);
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ScalarOrNDArray::NDArray(NDArrayObject { dtype, ndims, instance: value })
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}
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_ => ScalarOrNDArray::Scalar(ScalarObject { dtype: input_ty, value: input }),
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}
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}
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@ -1,9 +1,11 @@
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use inkwell::{types::BasicType, values::BasicValueEnum};
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use inkwell::types::BasicType;
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use util::gen_model_memcpy;
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use crate::{
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codegen::{
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irrt::ndarray::basic::{
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call_nac3_ndarray_get_nth_pelement, call_nac3_ndarray_nbytes,
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call_nac3_ndarray_copy_data, call_nac3_ndarray_get_nth_pelement,
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call_nac3_ndarray_is_c_contiguous, call_nac3_ndarray_nbytes,
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call_nac3_ndarray_set_strides_by_shape, call_nac3_ndarray_size,
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call_nac3_ndarray_util_assert_shape_no_negative,
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},
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@ -13,10 +15,31 @@ use crate::{
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util::{array_writer::ArrayWriter, control::gen_model_for},
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CodeGenContext, CodeGenerator,
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},
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toplevel::numpy::unpack_ndarray_var_tys,
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typecheck::typedef::{Type, TypeEnum},
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symbol_resolver::SymbolValue,
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typecheck::typedef::{Type, TypeEnum, Unifier},
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};
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use super::object::{NDArrayObject, ScalarOrNDArray};
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/// Extract an ndarray's `ndims` [type][`Type`] in `u64`. Panic if not possible.
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#[must_use]
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pub fn extract_ndims(unifier: &Unifier, ndims_ty: Type) -> u64 {
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let ndims_ty_enum = unifier.get_ty_immutable(ndims_ty);
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let TypeEnum::TLiteral { values, .. } = &*ndims_ty_enum else {
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panic!("ndims_ty should be a TLiteral");
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};
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assert_eq!(values.len(), 1, "ndims_ty TLiteral should only contain 1 value");
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let ndims = values[0].clone();
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u64::try_from(ndims).unwrap()
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}
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/// Return an ndarray's `ndims` as a typechecker [`Type`] from its `u64` value.
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pub fn create_ndims(unifier: &mut Unifier, ndims: u64) -> Type {
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unifier.get_fresh_literal(vec![SymbolValue::U64(ndims)], None)
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}
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/// Allocate an ndarray on the stack given its `ndims`.
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///
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/// `shape` and `strides` will be automatically allocated on the stack.
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@ -90,56 +113,6 @@ pub fn init_ndarray_data_by_alloca<'ctx, G: CodeGenerator + ?Sized>(
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call_nac3_ndarray_set_strides_by_shape(generator, ctx, pndarray);
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}
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/// Convert `input` to an ndarray - behaves similarly to `np.asarray`.
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///
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/// Returns the ndarray interpretation of `input` and **the element type** of the ndarray.
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///
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/// Here are the exact details:
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/// - If `input` is an ndarray, the function returns back the **same** ndarray and the `dtype`
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/// of the ndarray.
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/// - If `input` is not an ndarray, the function creates an ndarray with a single element `input`,
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/// and returns the created ndarray and `input_ty`. Note that the created ndarray's `ndims` will
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/// be `0` (an *unsized* ndarray).
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pub fn as_ndarray<'ctx, G: CodeGenerator + ?Sized>(
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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input: BasicValueEnum<'ctx>,
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input_ty: Type,
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) -> (Ptr<'ctx, StructModel<NpArray>>, Type) {
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let tyctx = generator.type_context(ctx.ctx);
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let sizet_model = IntModel(SizeT);
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let pbyte_model = PtrModel(IntModel(Byte));
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let pndarray_model = PtrModel(StructModel(NpArray));
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let input_ty_enum = ctx.unifier.get_ty(input_ty);
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match &*input_ty_enum {
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TypeEnum::TObj { obj_id, .. }
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if *obj_id == ctx.primitives.ndarray.obj_id(&ctx.unifier).unwrap() =>
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{
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let pndarray = pndarray_model.check_value(tyctx, ctx.ctx, input).unwrap();
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let (elem_ty, _) = unpack_ndarray_var_tys(&mut ctx.unifier, input_ty);
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(pndarray, elem_ty)
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}
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_ => {
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let ndims = sizet_model.const_0(tyctx, ctx.ctx);
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let pndarray = alloca_ndarray(generator, ctx, ndims, "ndarray");
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// We have to put `input` onto the stack to get a data pointer.
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let data = ctx.builder.build_alloca(input.get_type(), "as_ndarray_scalar").unwrap();
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ctx.builder.build_store(data, input).unwrap();
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let data = pbyte_model.transmute(tyctx, ctx, data, "data");
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pndarray.gep(ctx, |f| f.data).store(ctx, data);
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let itemsize = input.get_type().size_of().unwrap();
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let itemsize = sizet_model.check_value(tyctx, ctx.ctx, itemsize).unwrap();
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pndarray.gep(ctx, |f| f.itemsize).store(ctx, itemsize);
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(pndarray, input_ty)
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}
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}
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}
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/// Iterate through all elements in an ndarray.
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///
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/// `body` is given the index of an element and an opaque pointer (as an `uint8_t*`, you might want to cast it) to the element.
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@ -180,3 +153,141 @@ where
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},
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)
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}
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impl<'ctx> ScalarOrNDArray<'ctx> {
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/// Convert `input` to an ndarray - behaves like `np.asarray`.
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pub fn as_ndarray<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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) -> NDArrayObject<'ctx> {
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match self {
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ScalarOrNDArray::NDArray(ndarray) => *ndarray,
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ScalarOrNDArray::Scalar(scalar) => {
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let tyctx = generator.type_context(ctx.ctx);
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let pbyte_model = PtrModel(IntModel(Byte));
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// We have to put the value on the stack to get a data pointer.
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let data =
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ctx.builder.build_alloca(scalar.value.get_type(), "as_ndarray_scalar").unwrap();
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ctx.builder.build_store(data, scalar.value).unwrap();
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let data = pbyte_model.transmute(tyctx, ctx, data, "data");
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let ndims_ty = create_ndims(&mut ctx.unifier, 0);
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let ndarray = NDArrayObject::alloca(
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generator,
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ctx,
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ndims_ty,
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scalar.dtype,
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"scalar_as_ndarray",
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);
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ndarray.instance.gep(ctx, |f| f.data).store(ctx, data);
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// No need to initialize/setup strides or shapes - because `ndims` is 0.
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// So we only have to set `data`, `itemsize`, and `ndims = 0`.
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ndarray
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}
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}
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}
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}
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impl<'ctx> NDArrayObject<'ctx> {
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pub fn alloca<G: CodeGenerator + ?Sized>(
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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ndims: Type,
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dtype: Type,
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name: &str,
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) -> Self {
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let tyctx = generator.type_context(ctx.ctx);
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let sizet_model = IntModel(SizeT);
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let ndims_int = sizet_model.constant(tyctx, ctx.ctx, extract_ndims(&ctx.unifier, ndims));
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let instance = alloca_ndarray(generator, ctx, ndims_int, name);
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// Set itemsize
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let dtype_ty = ctx.get_llvm_type(generator, dtype);
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let itemsize = dtype_ty.size_of().unwrap();
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let itemsize = sizet_model.s_extend_or_bit_cast(tyctx, ctx, itemsize, "itemsize");
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instance.gep(ctx, |f| f.itemsize).store(ctx, itemsize);
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NDArrayObject { dtype, ndims, instance }
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}
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pub fn copy_shape<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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src_shape: Ptr<'ctx, IntModel<SizeT>>,
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) {
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let tyctx = generator.type_context(ctx.ctx);
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let sizet_model = IntModel(SizeT);
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let self_shape = self.instance.gep(ctx, |f| f.shape).load(tyctx, ctx, "self_shape");
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let ndims_int =
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sizet_model.constant(tyctx, ctx.ctx, extract_ndims(&ctx.unifier, self.ndims));
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gen_model_memcpy(tyctx, ctx, self_shape, src_shape, ndims_int.value, false);
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}
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pub fn copy_shape_from<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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src_ndarray: NDArrayObject<'ctx>,
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) {
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let tyctx = generator.type_context(ctx.ctx);
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let src_shape = src_ndarray.instance.gep(ctx, |f| f.shape).load(tyctx, ctx, "src_shape");
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self.copy_shape(generator, ctx, src_shape);
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}
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pub fn update_strides_by_shape<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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) {
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call_nac3_ndarray_set_strides_by_shape(generator, ctx, self.instance);
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}
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pub fn size<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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) -> Int<'ctx, SizeT> {
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call_nac3_ndarray_size(generator, ctx, self.instance)
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}
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pub fn nbytes<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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) -> Int<'ctx, SizeT> {
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call_nac3_ndarray_nbytes(generator, ctx, self.instance)
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}
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pub fn is_c_contiguous<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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) -> Int<'ctx, Bool> {
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call_nac3_ndarray_is_c_contiguous(generator, ctx, self.instance)
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}
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pub fn alloca_owned_data<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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) {
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init_ndarray_data_by_alloca(generator, ctx, self.instance);
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}
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pub fn copy_data_from<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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src: NDArrayObject<'ctx>,
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) {
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assert!(ctx.unifier.unioned(self.dtype, src.dtype), "self and src dtype should match");
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call_nac3_ndarray_copy_data(generator, ctx, src.instance, self.instance);
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}
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}
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@ -3,90 +3,67 @@ use nac3parser::ast::StrRef;
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use crate::{
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codegen::{
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irrt::ndarray::{
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basic::{
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call_nac3_ndarray_copy_data, call_nac3_ndarray_is_c_contiguous,
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call_nac3_ndarray_nbytes, call_nac3_ndarray_set_strides_by_shape,
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call_nac3_ndarray_size,
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},
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reshape::call_nac3_ndarray_resolve_and_check_new_shape,
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},
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irrt::ndarray::reshape::call_nac3_ndarray_resolve_and_check_new_shape,
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model::*,
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numpy_new::util::{alloca_ndarray, init_ndarray_shape},
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structure::ndarray::NpArray,
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util::{array_writer::ArrayWriter, shape::make_shape_writer},
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numpy_new::{object::split_scalar_or_ndarray, util::extract_ndims},
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util::shape::make_shape_writer,
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CodeGenContext, CodeGenerator,
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},
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symbol_resolver::ValueEnum,
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toplevel::DefinitionId,
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toplevel::{numpy::unpack_ndarray_var_tys, DefinitionId},
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typecheck::typedef::{FunSignature, Type},
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};
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fn gen_reshape_ndarray_or_copy<'ctx, G: CodeGenerator + ?Sized>(
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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src_ndarray: Ptr<'ctx, StructModel<NpArray>>,
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new_shape: &ArrayWriter<'ctx, G, SizeT, IntModel<SizeT>>,
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) -> Result<Ptr<'ctx, StructModel<NpArray>>, String> {
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let tyctx = generator.type_context(ctx.ctx);
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let byte_model = IntModel(Byte);
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use super::object::NDArrayObject;
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let current_bb = ctx.builder.get_insert_block().unwrap();
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let then_bb = ctx.ctx.insert_basic_block_after(current_bb, "then_bb");
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let else_bb = ctx.ctx.insert_basic_block_after(then_bb, "else_bb");
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let end_bb = ctx.ctx.insert_basic_block_after(else_bb, "end_bb");
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impl<'ctx> NDArrayObject<'ctx> {
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#[must_use]
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pub fn reshape_or_copy<G: CodeGenerator + ?Sized>(
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&self,
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generator: &mut G,
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ctx: &mut CodeGenContext<'ctx, '_>,
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new_ndims: Type,
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new_shape: Ptr<'ctx, IntModel<SizeT>>,
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) -> Self {
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let tyctx = generator.type_context(ctx.ctx);
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// Inserting into current_bb
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let dst_ndarray = alloca_ndarray(generator, ctx, new_shape.len, "ndarray");
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let current_bb = ctx.builder.get_insert_block().unwrap();
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let then_bb = ctx.ctx.insert_basic_block_after(current_bb, "then_bb");
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let else_bb = ctx.ctx.insert_basic_block_after(then_bb, "else_bb");
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let end_bb = ctx.ctx.insert_basic_block_after(else_bb, "end_bb");
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// Set shape - directly from user input
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init_ndarray_shape(generator, ctx, dst_ndarray, new_shape)?;
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dst_ndarray
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.gep(ctx, |f| f.itemsize)
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.store(ctx, src_ndarray.gep(ctx, |f| f.itemsize).load(tyctx, ctx, "itemsize"));
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let dst_ndarray =
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NDArrayObject::alloca(generator, ctx, new_ndims, self.dtype, "reshaped_ndarray");
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dst_ndarray.copy_shape(generator, ctx, new_shape);
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dst_ndarray.update_strides_by_shape(generator, ctx);
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// Resolve shape input from user
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let src_ndarray_size = call_nac3_ndarray_size(generator, ctx, src_ndarray);
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call_nac3_ndarray_resolve_and_check_new_shape(
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generator,
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ctx,
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src_ndarray_size,
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dst_ndarray.gep(ctx, |f| f.ndims).load(tyctx, ctx, "ndims"),
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dst_ndarray.gep(ctx, |f| f.shape).load(tyctx, ctx, "shape"),
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);
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let is_c_contiguous = self.is_c_contiguous(generator, ctx);
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ctx.builder.build_conditional_branch(is_c_contiguous.value, then_bb, else_bb).unwrap();
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// Update strides
|
||||
call_nac3_ndarray_set_strides_by_shape(generator, ctx, dst_ndarray);
|
||||
// Inserting into then_bb: reshape is possible without copying
|
||||
ctx.builder.position_at_end(then_bb);
|
||||
dst_ndarray
|
||||
.instance
|
||||
.gep(ctx, |f| f.data)
|
||||
.store(ctx, dst_ndarray.instance.gep(ctx, |f| f.data).load(tyctx, ctx, "data"));
|
||||
ctx.builder.build_unconditional_branch(end_bb).unwrap();
|
||||
|
||||
let is_c_contiguous = call_nac3_ndarray_is_c_contiguous(generator, ctx, src_ndarray);
|
||||
ctx.builder.build_conditional_branch(is_c_contiguous.value, then_bb, else_bb).unwrap();
|
||||
// Inserting into else_bb: reshape is impossible without copying
|
||||
ctx.builder.position_at_end(else_bb);
|
||||
dst_ndarray.alloca_owned_data(generator, ctx);
|
||||
dst_ndarray.copy_data_from(generator, ctx, *self);
|
||||
ctx.builder.build_unconditional_branch(end_bb).unwrap();
|
||||
|
||||
// Inserting into then_bb: reshape is possible without copying
|
||||
ctx.builder.position_at_end(then_bb);
|
||||
dst_ndarray
|
||||
.gep(ctx, |f| f.data)
|
||||
.store(ctx, src_ndarray.gep(ctx, |f| f.data).load(tyctx, ctx, "data"));
|
||||
ctx.builder.build_unconditional_branch(end_bb).unwrap();
|
||||
// Reposition for continuation
|
||||
ctx.builder.position_at_end(end_bb);
|
||||
|
||||
// Inserting into else_bb: reshape is impossible without copying
|
||||
ctx.builder.position_at_end(else_bb);
|
||||
// Allocate data
|
||||
let dst_ndarray_nbytes = call_nac3_ndarray_nbytes(generator, ctx, dst_ndarray);
|
||||
let data = byte_model.array_alloca(tyctx, ctx, dst_ndarray_nbytes.value, "new_data");
|
||||
dst_ndarray.gep(ctx, |f| f.data).store(ctx, data);
|
||||
// Copy content
|
||||
call_nac3_ndarray_copy_data(generator, ctx, src_ndarray, dst_ndarray);
|
||||
ctx.builder.build_unconditional_branch(end_bb).unwrap();
|
||||
|
||||
// Reposition for continuation
|
||||
ctx.builder.position_at_end(end_bb);
|
||||
|
||||
Ok(dst_ndarray)
|
||||
dst_ndarray
|
||||
}
|
||||
}
|
||||
|
||||
/// Generates LLVM IR for `np.reshape`.
|
||||
pub fn gen_ndarray_reshape<'ctx>(
|
||||
context: &mut CodeGenContext<'ctx, '_>,
|
||||
ctx: &mut CodeGenContext<'ctx, '_>,
|
||||
obj: &Option<(Type, ValueEnum<'ctx>)>,
|
||||
fun: (&FunSignature, DefinitionId),
|
||||
args: &[(Option<StrRef>, ValueEnum<'ctx>)],
|
||||
@ -95,21 +72,43 @@ pub fn gen_ndarray_reshape<'ctx>(
|
||||
assert!(obj.is_none());
|
||||
assert_eq!(args.len(), 2);
|
||||
|
||||
// Parse argument #1 ndarray
|
||||
let ndarray_ty = fun.0.args[0].ty;
|
||||
let ndarray_arg = args[0].1.clone().to_basic_value_enum(context, generator, ndarray_ty)?;
|
||||
// Parse argument #1 input
|
||||
let input_ty = fun.0.args[0].ty;
|
||||
let input_arg = args[0].1.clone().to_basic_value_enum(ctx, generator, input_ty)?;
|
||||
|
||||
// Parse argument #2 shape
|
||||
let shape_ty = fun.0.args[1].ty;
|
||||
let shape_arg = args[1].1.clone().to_basic_value_enum(context, generator, shape_ty)?;
|
||||
let shape_arg = args[1].1.clone().to_basic_value_enum(ctx, generator, shape_ty)?;
|
||||
|
||||
let tyctx = generator.type_context(context.ctx);
|
||||
let pndarray_model = PtrModel(StructModel(NpArray));
|
||||
// Define models
|
||||
let tyctx = generator.type_context(ctx.ctx);
|
||||
let sizet_model = IntModel(SizeT);
|
||||
|
||||
let src_ndarray = pndarray_model.check_value(tyctx, context.ctx, ndarray_arg).unwrap();
|
||||
let new_shape = make_shape_writer(generator, context, shape_arg, shape_ty);
|
||||
// Extract reshaped_ndims
|
||||
let (_, reshaped_ndims) = unpack_ndarray_var_tys(&mut ctx.unifier, fun.0.ret);
|
||||
let reshaped_ndims_int = extract_ndims(&ctx.unifier, reshaped_ndims);
|
||||
|
||||
let reshaped_ndarray =
|
||||
gen_reshape_ndarray_or_copy(generator, context, src_ndarray, &new_shape)?;
|
||||
Ok(reshaped_ndarray.value)
|
||||
// Process `input`
|
||||
let ndarray =
|
||||
split_scalar_or_ndarray(tyctx, ctx, input_arg, input_ty).as_ndarray(generator, ctx);
|
||||
|
||||
// Process the shape input from user and resolve negative indices
|
||||
let new_shape = make_shape_writer(generator, ctx, shape_arg, shape_ty).alloca_array_and_write(
|
||||
generator,
|
||||
ctx,
|
||||
"new_shape",
|
||||
)?;
|
||||
let size = ndarray.size(generator, ctx);
|
||||
call_nac3_ndarray_resolve_and_check_new_shape(
|
||||
generator,
|
||||
ctx,
|
||||
size,
|
||||
sizet_model.constant(tyctx, ctx.ctx, reshaped_ndims_int),
|
||||
new_shape,
|
||||
);
|
||||
|
||||
// Reshape
|
||||
let reshaped_ndarray = ndarray.reshape_or_copy(generator, ctx, reshaped_ndims, new_shape);
|
||||
|
||||
Ok(reshaped_ndarray.instance.value)
|
||||
}
|
||||
|
@ -15,3 +15,20 @@ pub struct ArrayWriter<'ctx, G: CodeGenerator + ?Sized, Len: IntKind, Item: Mode
|
||||
+ 'ctx,
|
||||
>,
|
||||
}
|
||||
|
||||
impl<'ctx, G: CodeGenerator + ?Sized, Len: IntKind, Item: Model> ArrayWriter<'ctx, G, Len, Item> {
|
||||
pub fn alloca_array_and_write(
|
||||
&self,
|
||||
generator: &mut G,
|
||||
ctx: &mut CodeGenContext<'ctx, '_>,
|
||||
name: &str,
|
||||
) -> Result<Ptr<'ctx, Item>, String> {
|
||||
let tyctx = generator.type_context(ctx.ctx);
|
||||
|
||||
let item_model = Item::default();
|
||||
|
||||
let item_array = item_model.array_alloca(tyctx, ctx, self.len.value, name);
|
||||
(self.write)(generator, ctx, item_array)?;
|
||||
Ok(item_array)
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user