bjoernager/rust
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Shrink hir::def::Res.

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`Res::SelfTy` currently has two `Option`s. When the second one is `Some`
the first one is never consulted. So we can split it into two variants,
`Res::SelfTyParam` and `Res::SelfTyAlias`, reducing the size of `Res`
from 24 bytes to 12. This then shrinks `hir::Path` and
`hir::PathSegment`, which are the HIR types that take up the most space.
This commit is contained in:
Nicholas Nethercote 2022-09-16 11:45:33 +10:00
parent 5f29a13a5b
commit f07d4efc45
28 changed files with 224 additions and 185 deletions
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4
compiler/rustc_privacy/src/lib.rs
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@ -1422,7 +1422,9 @@ struct ObsoleteCheckTypeForPrivatenessVisitor<'a, 'b, 'tcx> {
impl<'a, 'tcx> ObsoleteVisiblePrivateTypesVisitor<'a, 'tcx> {
fn path_is_private_type(&self, path: &hir::Path<'_>) -> bool {
let did = match path.res {
Res::PrimTy(..) | Res::SelfTy { .. } | Res::Err => return false,
Res::PrimTy(..) | Res::SelfTyParam { .. } | Res::SelfTyAlias { .. } | Res::Err => {
return false;
}
res => res.def_id(),
};