bjoernager/rust
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codegen #[naked] functions using global_asm!

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Folkert 2024-08-08 10:20:40 +02:00 • committed by Folkert de Vries
parent 9c707a8b76
commit bd8f8e0631
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18 changed files with 624 additions and 102 deletions
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5
compiler/rustc_middle/src/mir/mono.rs
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@ -19,6 +19,7 @@ use rustc_target::spec::SymbolVisibility;
use tracing::debug;
use crate::dep_graph::{DepNode, WorkProduct, WorkProductId};
use crate::middle::codegen_fn_attrs::CodegenFnAttrFlags;
use crate::ty::{GenericArgs, Instance, InstanceKind, SymbolName, TyCtxt};
/// Describes how a monomorphization will be instantiated in object files.
@ -104,7 +105,9 @@ impl<'tcx> MonoItem<'tcx> {
let entry_def_id = tcx.entry_fn(()).map(|(id, _)| id);
// If this function isn't inlined or otherwise has an extern
// indicator, then we'll be creating a globally shared version.
if tcx.codegen_fn_attrs(instance.def_id()).contains_extern_indicator()
let codegen_fn_attrs = tcx.codegen_fn_attrs(instance.def_id());
if codegen_fn_attrs.contains_extern_indicator()
|| codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::NAKED)
|| !instance.def.generates_cgu_internal_copy(tcx)
|| Some(instance.def_id()) == entry_def_id
{