forked from M-Labs/nac3
artiq: reimplement reformat_rpc_arg for ndarray
This commit is contained in:
parent
4e9facd457
commit
700357a8b2
@ -1,17 +1,20 @@
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use nac3core::{
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codegen::{
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classes::{
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ArrayLikeIndexer, ArrayLikeValue, ArraySliceValue, ListValue, NDArrayType,
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NDArrayValue, ProxyType, ProxyValue, RangeValue, UntypedArrayLikeAccessor,
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},
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classes::{ListValue, NDArrayValue, RangeValue, UntypedArrayLikeAccessor},
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expr::{destructure_range, gen_call},
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irrt::call_ndarray_calc_size,
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llvm_intrinsics::{call_int_smax, call_memcpy_generic, call_stackrestore, call_stacksave},
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llvm_intrinsics::{call_int_smax, call_stackrestore, call_stacksave},
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model::*,
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object::{any::AnyObject, ndarray::NDArrayObject},
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stmt::{gen_block, gen_for_callback_incrementing, gen_if_callback, gen_with},
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CodeGenContext, CodeGenerator,
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},
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symbol_resolver::ValueEnum,
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toplevel::{helper::PrimDef, numpy::unpack_ndarray_var_tys, DefinitionId, GenCall},
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toplevel::{
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helper::{extract_ndims, PrimDef},
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numpy::unpack_ndarray_var_tys,
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DefinitionId, GenCall,
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},
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typecheck::typedef::{iter_type_vars, FunSignature, FuncArg, Type, TypeEnum, VarMap},
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};
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@ -20,8 +23,8 @@ use nac3parser::ast::{Expr, ExprKind, Located, Stmt, StmtKind, StrRef};
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use inkwell::{
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context::Context,
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module::Linkage,
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types::{BasicType, IntType},
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values::{BasicValueEnum, PointerValue, StructValue},
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types::IntType,
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values::{BasicValue, BasicValueEnum, PointerValue, StructValue},
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AddressSpace, IntPredicate, OptimizationLevel,
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};
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@ -457,55 +460,42 @@ fn format_rpc_arg<'ctx>(
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// NAC3: NDArray = { usize, usize*, T* }
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// libproto_artiq: NDArray = [data[..], dim_sz[..]]
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let llvm_i1 = ctx.ctx.bool_type();
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let llvm_usize = generator.get_size_type(ctx.ctx);
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let ndarray = AnyObject { ty: arg_ty, value: arg };
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let ndarray = NDArrayObject::from_object(generator, ctx, ndarray);
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let (elem_ty, _) = unpack_ndarray_var_tys(&mut ctx.unifier, arg_ty);
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let llvm_arg_ty =
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NDArrayType::new(generator, ctx.ctx, ctx.get_llvm_type(generator, elem_ty));
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let llvm_arg = NDArrayValue::from_ptr_val(arg.into_pointer_value(), llvm_usize, None);
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let dtype = ctx.get_llvm_type(generator, ndarray.dtype);
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let ndims = ndarray.ndims_llvm(generator, ctx.ctx);
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let llvm_usize_sizeof = ctx
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.builder
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.build_int_truncate_or_bit_cast(llvm_arg_ty.size_type().size_of(), llvm_usize, "")
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.unwrap();
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let llvm_pdata_sizeof = ctx
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.builder
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.build_int_truncate_or_bit_cast(
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llvm_arg_ty.element_type().ptr_type(AddressSpace::default()).size_of(),
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llvm_usize,
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"",
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)
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.unwrap();
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// `ndarray.data` is possibly not contiguous, and we need it to be contiguous for
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// the reader.
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// Turning it into a ContiguousNDArray to get a `data` that is contiguous.
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let carray = ndarray.make_contiguous_ndarray(generator, ctx, Any(dtype));
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let dims_buf_sz =
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ctx.builder.build_int_mul(llvm_arg.load_ndims(ctx), llvm_usize_sizeof, "").unwrap();
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let sizeof_sizet = Int(SizeT).size_of(generator, ctx.ctx);
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let sizeof_sizet = Int(SizeT).truncate_or_bit_cast(generator, ctx, sizeof_sizet);
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let buffer_size =
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ctx.builder.build_int_add(dims_buf_sz, llvm_pdata_sizeof, "").unwrap();
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let sizeof_pdata = Ptr(Any(dtype)).size_of(generator, ctx.ctx);
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let sizeof_pdata = Int(SizeT).truncate_or_bit_cast(generator, ctx, sizeof_pdata);
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let buffer = ctx.builder.build_array_alloca(llvm_i8, buffer_size, "rpc.arg").unwrap();
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let buffer = ArraySliceValue::from_ptr_val(buffer, buffer_size, Some("rpc.arg"));
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let sizeof_buf_shape = sizeof_sizet.mul(ctx, ndims);
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let sizeof_buf = sizeof_buf_shape.add(ctx, sizeof_pdata);
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call_memcpy_generic(
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ctx,
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buffer.base_ptr(ctx, generator),
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llvm_arg.ptr_to_data(ctx),
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llvm_pdata_sizeof,
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llvm_i1.const_zero(),
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);
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// buf = { data: void*, shape: [size_t; ndims]; }
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let buf = Int(Byte).array_alloca(generator, ctx, sizeof_buf.value);
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let buf_data = buf;
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let buf_shape = buf_data.offset(ctx, sizeof_pdata.value);
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let pbuffer_dims_begin =
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unsafe { buffer.ptr_offset_unchecked(ctx, generator, &llvm_pdata_sizeof, None) };
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call_memcpy_generic(
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ctx,
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pbuffer_dims_begin,
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llvm_arg.dim_sizes().base_ptr(ctx, generator),
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dims_buf_sz,
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llvm_i1.const_zero(),
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);
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// Write to `buf->data`
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let carray_data = carray.get(generator, ctx, |f| f.data); // has type Ptr<Any>
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let carray_data = carray_data.pointer_cast(generator, ctx, Int(Byte));
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buf_data.copy_from(generator, ctx, carray_data, sizeof_pdata.value);
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buffer.base_ptr(ctx, generator)
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// Write to `buf->shape`
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let carray_shape = ndarray.instance.get(generator, ctx, |f| f.shape);
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let carray_shape_i8 = carray_shape.pointer_cast(generator, ctx, Int(Byte));
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buf_shape.copy_from(generator, ctx, carray_shape_i8, sizeof_buf_shape.value);
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buf.value
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}
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_ => {
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@ -566,8 +556,10 @@ fn format_rpc_ret<'ctx>(
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let result = match &*ctx.unifier.get_ty_immutable(ret_ty) {
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TypeEnum::TObj { obj_id, .. } if *obj_id == PrimDef::NDArray.id() => {
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let llvm_i1 = ctx.ctx.bool_type();
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let llvm_usize = generator.get_size_type(ctx.ctx);
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// FIXME: It is possible to rewrite everything more neatly with `Model<'ctx>`, but this is not too important.
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let num_0 = Int(SizeT).const_0(generator, ctx.ctx);
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let num_8 = Int(SizeT).const_int(generator, ctx.ctx, 8, false);
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// Round `val` up to its modulo `power_of_two`
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let round_up = |ctx: &mut CodeGenContext<'ctx, '_>,
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@ -593,60 +585,36 @@ fn format_rpc_ret<'ctx>(
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.unwrap()
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};
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// Setup types
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let (elem_ty, ndims) = unpack_ndarray_var_tys(&mut ctx.unifier, ret_ty);
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let llvm_elem_ty = ctx.get_llvm_type(generator, elem_ty);
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let llvm_ret_ty = NDArrayType::new(generator, ctx.ctx, llvm_elem_ty);
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// Allocate the resulting ndarray
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// A condition after format_rpc_ret ensures this will not be popped this off.
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let ndarray = llvm_ret_ty.new_value(generator, ctx, Some("rpc.result"));
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let (dtype, ndims) = unpack_ndarray_var_tys(&mut ctx.unifier, ret_ty);
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let ndims = extract_ndims(&ctx.unifier, ndims);
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let ndarray = NDArrayObject::alloca(generator, ctx, dtype, ndims);
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// Setup ndims
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let ndims =
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if let TypeEnum::TLiteral { values, .. } = &*ctx.unifier.get_ty_immutable(ndims) {
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assert_eq!(values.len(), 1);
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// NOTE: Current content of `ndarray`:
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// - * `data` - **NOT YET** allocated.
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// - * `itemsize` - initialized to be size_of(dtype).
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// - * `ndims` - initialized.
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// - * `shape` - allocated; has uninitialized values.
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// - * `strides` - allocated; has uninitialized values.
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u64::try_from(values[0].clone()).unwrap()
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} else {
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unreachable!();
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};
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// Set `ndarray.ndims`
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ndarray.store_ndims(ctx, generator, llvm_usize.const_int(ndims, false));
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// Allocate `ndarray.shape` [size_t; ndims]
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ndarray.create_dim_sizes(ctx, llvm_usize, ndarray.load_ndims(ctx));
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/*
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ndarray now:
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- .ndims: initialized
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- .shape: allocated but uninitialized .shape
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- .data: uninitialized
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*/
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let llvm_usize_sizeof = ctx
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.builder
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.build_int_truncate_or_bit_cast(llvm_usize.size_of(), llvm_usize, "")
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.unwrap();
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let llvm_pdata_sizeof = ctx
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.builder
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.build_int_truncate_or_bit_cast(
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llvm_ret_ty.element_type().size_of().unwrap(),
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llvm_usize,
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"",
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)
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.unwrap();
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let llvm_elem_sizeof = ctx
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.builder
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.build_int_truncate_or_bit_cast(llvm_elem_ty.size_of().unwrap(), llvm_usize, "")
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.unwrap();
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let itemsize = ndarray.instance.get(generator, ctx, |f| f.itemsize); // Same as doing a `ctx.get_llvm_type` on `dtype` and get its `size_of()`.
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let dtype_llvm = ctx.get_llvm_type(generator, dtype);
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// Allocates a buffer for the initial RPC'ed object, which is guaranteed to be
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// (4 + 4 * ndims) bytes with 8-byte alignment
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let sizeof_dims =
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ctx.builder.build_int_mul(ndarray.load_ndims(ctx), llvm_usize_sizeof, "").unwrap();
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let unaligned_buffer_size =
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ctx.builder.build_int_add(sizeof_dims, llvm_pdata_sizeof, "").unwrap();
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let buffer_size = round_up(ctx, unaligned_buffer_size, llvm_usize.const_int(8, false));
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let sizeof_size_t = Int(SizeT).size_of(generator, ctx.ctx);
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let sizeof_size_t = Int(SizeT).z_extend_or_truncate(generator, ctx, sizeof_size_t); // sizeof(size_t)
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let sizeof_ptr = Ptr(Int(Byte)).size_of(generator, ctx.ctx);
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let sizeof_ptr = Int(SizeT).z_extend_or_truncate(generator, ctx, sizeof_ptr); // sizeof(uint8_t*)
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let sizeof_shape = ndarray.ndims_llvm(generator, ctx.ctx).mul(ctx, sizeof_size_t); // sizeof([size_t; ndims]); same as the # of bytes of `ndarray.shape`.
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// Size of the buffer for the initial `rpc_recv()`.
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let unaligned_buffer_size = sizeof_ptr.add(ctx, sizeof_shape); // sizeof(uint8_t*) + sizeof([size_t; ndims]).
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let buffer_size = round_up(ctx, unaligned_buffer_size.value, num_8.value);
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let buffer_size = unsafe { Int(SizeT).believe_value(buffer_size) };
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let stackptr = call_stacksave(ctx, None);
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// Just to be absolutely sure, alloca in [i8 x 8] slices to force 8-byte alignment
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@ -654,9 +622,7 @@ fn format_rpc_ret<'ctx>(
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.builder
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.build_array_alloca(
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llvm_i8_8,
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ctx.builder
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.build_int_unsigned_div(buffer_size, llvm_usize.const_int(8, false), "")
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.unwrap(),
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ctx.builder.build_int_unsigned_div(buffer_size.value, num_8.value, "").unwrap(),
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"rpc.buffer",
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)
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.unwrap();
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@ -665,7 +631,7 @@ fn format_rpc_ret<'ctx>(
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.build_bitcast(buffer, llvm_pi8, "")
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.map(BasicValueEnum::into_pointer_value)
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.unwrap();
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let buffer = ArraySliceValue::from_ptr_val(buffer, buffer_size, None);
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let buffer = unsafe { Ptr(Int(Byte)).believe_value(buffer) };
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// The first call to `rpc_recv` reads the top-level ndarray object: [pdata, shape]
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//
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@ -673,24 +639,20 @@ fn format_rpc_ret<'ctx>(
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let ndarray_nbytes = ctx
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.build_call_or_invoke(
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rpc_recv,
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&[buffer.base_ptr(ctx, generator).into()], // Reads [usize; ndims]. NOTE: We are allocated [size_t; ndims].
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&[buffer.value.into()], // Reads [usize; ndims]
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"rpc.size.next",
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)
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.map(BasicValueEnum::into_int_value)
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.unwrap();
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let ndarray_nbytes = unsafe { Int(SizeT).believe_value(ndarray_nbytes) };
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// debug_assert(ndarray_nbytes > 0)
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if ctx.registry.llvm_options.opt_level == OptimizationLevel::None {
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let cmp = ndarray_nbytes.compare(ctx, IntPredicate::UGT, num_0);
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ctx.make_assert(
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generator,
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ctx.builder
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.build_int_compare(
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IntPredicate::UGT,
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ndarray_nbytes,
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ndarray_nbytes.get_type().const_zero(),
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"",
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)
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.unwrap(),
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cmp.value,
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"0:AssertionError",
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"Unexpected RPC termination for ndarray - Expected data buffer next",
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[None, None, None],
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@ -699,49 +661,39 @@ fn format_rpc_ret<'ctx>(
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}
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// Copy shape from the buffer to `ndarray.shape`.
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let pbuffer_dims =
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unsafe { buffer.ptr_offset_unchecked(ctx, generator, &llvm_pdata_sizeof, None) };
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// We need to skip the first `sizeof(uint8_t*)` bytes to skip the `pdata` in `[pdata, shape]`.
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let pbuffer_shape = buffer.offset(ctx, sizeof_ptr.value);
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let pbuffer_shape = pbuffer_shape.pointer_cast(generator, ctx, Int(SizeT));
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// Copy shape from buffer to `ndarray.shape`
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ndarray.copy_shape_from_array(generator, ctx, pbuffer_shape);
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call_memcpy_generic(
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ctx,
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ndarray.dim_sizes().base_ptr(ctx, generator),
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pbuffer_dims,
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sizeof_dims,
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llvm_i1.const_zero(),
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);
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// Restore stack from before allocation of buffer
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call_stackrestore(ctx, stackptr);
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// Allocate `ndarray.data`.
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// `ndarray.shape` must be initialized beforehand in this implementation
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// (for ndarray.create_data() to know how many elements to allocate)
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let num_elements =
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call_ndarray_calc_size(generator, ctx, &ndarray.dim_sizes(), (None, None));
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ndarray.create_data(generator, ctx); // NOTE: the strides of `ndarray` has also been set to contiguous in `::create_data()`.
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// debug_assert(nelems * sizeof(T) >= ndarray_nbytes)
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if ctx.registry.llvm_options.opt_level == OptimizationLevel::None {
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let sizeof_data =
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ctx.builder.build_int_mul(num_elements, llvm_elem_sizeof, "").unwrap();
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let num_elements = ndarray.size(generator, ctx);
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let expected_ndarray_nbytes = num_elements.mul(ctx, itemsize);
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let cmp = expected_ndarray_nbytes.compare(ctx, IntPredicate::UGE, ndarray_nbytes);
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ctx.make_assert(
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generator,
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ctx.builder.build_int_compare(IntPredicate::UGE,
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sizeof_data,
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ndarray_nbytes,
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"",
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).unwrap(),
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cmp.value,
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"0:AssertionError",
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"Unexpected allocation size request for ndarray data - Expected up to {0} bytes, got {1} bytes",
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[Some(sizeof_data), Some(ndarray_nbytes), None],
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[Some(expected_ndarray_nbytes.value), Some(ndarray_nbytes.value), None],
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ctx.current_loc,
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);
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}
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ndarray.create_data(ctx, llvm_elem_ty, num_elements);
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let ndarray_data = ndarray.data().base_ptr(ctx, generator);
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let ndarray_data_i8 =
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ctx.builder.build_pointer_cast(ndarray_data, llvm_pi8, "").unwrap();
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let ndarray_data = ndarray.instance.get(generator, ctx, |f| f.data);
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// NOTE: Currently on `prehead_bb`
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ctx.builder.build_unconditional_branch(head_bb).unwrap();
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@ -750,7 +702,7 @@ fn format_rpc_ret<'ctx>(
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ctx.builder.position_at_end(head_bb);
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let phi = ctx.builder.build_phi(llvm_pi8, "rpc.ptr").unwrap();
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phi.add_incoming(&[(&ndarray_data_i8, prehead_bb)]);
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phi.add_incoming(&[(&ndarray_data.value, prehead_bb)]);
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let alloc_size = ctx
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.build_call_or_invoke(rpc_recv, &[phi.as_basic_value()], "rpc.size.next")
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@ -765,12 +717,12 @@ fn format_rpc_ret<'ctx>(
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ctx.builder.position_at_end(alloc_bb);
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// Align the allocation to sizeof(T)
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let alloc_size = round_up(ctx, alloc_size, llvm_elem_sizeof);
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let alloc_size = round_up(ctx, alloc_size, itemsize.value);
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let alloc_ptr = ctx
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.builder
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.build_array_alloca(
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llvm_elem_ty,
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ctx.builder.build_int_unsigned_div(alloc_size, llvm_elem_sizeof, "").unwrap(),
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dtype_llvm,
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ctx.builder.build_int_unsigned_div(alloc_size, itemsize.value, "").unwrap(),
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"rpc.alloc",
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)
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.unwrap();
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@ -780,7 +732,7 @@ fn format_rpc_ret<'ctx>(
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ctx.builder.build_unconditional_branch(head_bb).unwrap();
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ctx.builder.position_at_end(tail_bb);
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ndarray.as_base_value().into()
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ndarray.instance.value.as_basic_value_enum()
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}
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_ => {
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