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cold

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This commit is contained in:
Jana Dönszelmann
2025-06-12 13:52:23 +02:00
parent 3b97f1308f
commit de0fd27f34
8 changed files with 81 additions and 33 deletions
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19
compiler/rustc_codegen_ssa/src/codegen_attrs.rs
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@@ -4,7 +4,7 @@ use rustc_abi::ExternAbi;
use rustc_ast::expand::autodiff_attrs::{AutoDiffAttrs, DiffActivity, DiffMode};
use rustc_ast::{LitKind, MetaItem, MetaItemInner, attr};
use rustc_attr_data_structures::{
AttributeKind, InlineAttr, InstructionSetAttr, OptimizeAttr, find_attr,
AttributeKind, InlineAttr, InstructionSetAttr, OptimizeAttr, ReprAttr, find_attr,
};
use rustc_hir::def::DefKind;
use rustc_hir::def_id::{DefId, LOCAL_CRATE, LocalDefId};
@@ -110,8 +110,20 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs {
}
};
if let hir::Attribute::Parsed(AttributeKind::Align { align, .. }) = attr {
codegen_fn_attrs.alignment = Some(*align);
if let hir::Attribute::Parsed(p) = attr {
match p {
AttributeKind::Repr(reprs) => {
codegen_fn_attrs.alignment = reprs
.iter()
.filter_map(
|(r, _)| if let ReprAttr::ReprAlign(x) = r { Some(*x) } else { None },
)
.max();
}
AttributeKind::Cold(_) => codegen_fn_attrs.flags |= CodegenFnAttrFlags::COLD,
AttributeKind::Align { align, .. } => codegen_fn_attrs.alignment = Some(*align),
_ => {}
}
}
let Some(Ident { name, .. }) = attr.ident() else {
@@ -119,7 +131,6 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs {
};
match name {
sym::cold => codegen_fn_attrs.flags |= CodegenFnAttrFlags::COLD,
sym::rustc_allocator => codegen_fn_attrs.flags |= CodegenFnAttrFlags::ALLOCATOR,
sym::ffi_pure => codegen_fn_attrs.flags |= CodegenFnAttrFlags::FFI_PURE,
sym::ffi_const => codegen_fn_attrs.flags |= CodegenFnAttrFlags::FFI_CONST,