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Inline records of at most 16 bytes into the two-word RecordValue with layout-resolved storage

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This commit is contained in:
Dennis Kobert
2026-08-05 17:23:09 +00:00
parent 7915800d73
commit 9fc4fcc7a0
5 changed files with 198 additions and 72 deletions
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20
node-graph/node-macro/src/codegen.rs
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@@ -123,6 +123,7 @@ pub(crate) fn generate_node_code(crate_ident: &CrateIdent, parsed: &ParsedNodeFn
Some(shape) => {
let mut state = vec![quote!(pub(super) __layout: gcore::record::Layout)];
if !shape.skips_carrier() {
state.push(quote!(pub(super) __carrier: gcore::record::Layout));
state.push(quote!(pub(super) __plan: ::std::vec::Vec<(usize, usize, usize)>));
}
state.push(quote!(pub(super) __frame_bytes: usize));
@@ -1113,7 +1114,7 @@ pub(crate) fn generate_node_impl(crate_ident: &CrateIdent, parsed: &ParsedNodeFn
Ok(value) => value,
Err(interrupt) => return interrupt.into(),
};
let __src_rec = #core_types::record::RecordValue::rec(__src);
let __src_rec = self.__carrier.rec(&__src);
}
});
let carry = (!shape.skips_carrier()).then(|| quote!(unsafe { #core_types::record::apply_plan(__src_rec, __dst, &self.__plan) };));
@@ -1152,7 +1153,11 @@ pub(crate) fn generate_node_impl(crate_ident: &CrateIdent, parsed: &ParsedNodeFn
quote!(unsafe { #core_types::record::write_field(__dst, self.#slot, #binder) };)
});
quote! {
let __dst = #core_types::record::stack::push(self.__frame_bytes);
let mut __value = #core_types::record::RecordValue::zeroed();
let __dst = match self.__frame_bytes {
0 => __value.as_mut_ptr(),
__bytes => #core_types::record::stack::push(__bytes),
};
#carrier_eval
#carry
#(#read_bindings)*
@@ -1160,8 +1165,11 @@ pub(crate) fn generate_node_impl(crate_ident: &CrateIdent, parsed: &ParsedNodeFn
#destructure
#element_store
#(#attr_stores)*
#core_types::record::stack::pop(__dst);
__cell.finish(#core_types::record::RecordValue::from_rec(unsafe { #core_types::record::Rec::new(__dst.cast_const()) }))
if self.__frame_bytes != 0 {
#core_types::record::stack::pop(__dst);
__value = #core_types::record::RecordValue::spilled(unsafe { #core_types::record::Rec::new(__dst.cast_const()) });
}
__cell.finish(__value)
}
});
let eval_tail = match (async_fn, future_kernel) {
@@ -1288,6 +1296,7 @@ pub(crate) fn generate_node_impl(crate_ident: &CrateIdent, parsed: &ParsedNodeFn
let name = &field.pat_ident.ident;
quote!(#name,)
});
let carrier_init = (!shape.skips_carrier()).then(|| quote!(__carrier: __carrier_layout.clone(),)).into_iter();
let plan_init = (!shape.skips_carrier()).then(|| quote!(__plan,)).into_iter();
let read_names = (0..parsed.attribute_reads.len()).map(|index| format_ident!("__read_{index}")).map(|slot| quote!(#slot,));
let write_names = (0..shape.write_markers.len()).map(|index| format_ident!("__write_{index}")).map(|slot| quote!(#slot,));
@@ -1302,10 +1311,11 @@ pub(crate) fn generate_node_impl(crate_ident: &CrateIdent, parsed: &ParsedNodeFn
#plan_binding
#(#read_inits)*
#(#write_inits)*
let __frame_bytes = __layout.size.next_multiple_of(8);
let __frame_bytes = __layout.frame_bytes();
Self {
#(#data_inits)*
#(#edge_inits)*
#(#carrier_init)*
__layout,
#(#plan_init)*
__frame_bytes,