bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Arena-allocate hir::Lifetime.

Browse source 
This shrinks `hir::Ty` from 72 to 48 bytes.

`visit_lifetime` is added to the HIR stats collector because these types
are now stored in memory on their own, instead of being within other
types.
This commit is contained in:
Nicholas Nethercote 2022-09-01 12:06:48 +10:00
parent 512bd84f51
commit 4314615ff8
6 changed files with 65 additions and 56 deletions
Download patch file Download diff file Expand all files Collapse all files

18
compiler/rustc_hir/src/hir.rs
View file

@ -259,7 +259,7 @@ impl InferArg {
#[derive(Debug, HashStable_Generic)]
pub enum GenericArg<'hir> {
Lifetime(Lifetime),
Lifetime(&'hir Lifetime),
Type(&'hir Ty<'hir>),
Const(ConstArg),
Infer(InferArg),
@ -430,7 +430,7 @@ pub enum GenericBound<'hir> {
Trait(PolyTraitRef<'hir>, TraitBoundModifier),
// FIXME(davidtwco): Introduce `PolyTraitRef::LangItem`
LangItemTrait(LangItem, Span, HirId, &'hir GenericArgs<'hir>),
Outlives(Lifetime),
Outlives(&'hir Lifetime),
}
impl GenericBound<'_> {
@ -756,7 +756,7 @@ impl<'hir> WhereBoundPredicate<'hir> {
pub struct WhereRegionPredicate<'hir> {
pub span: Span,
pub in_where_clause: bool,
pub lifetime: Lifetime,
pub lifetime: &'hir Lifetime,
pub bounds: GenericBounds<'hir>,
}
@ -2499,7 +2499,7 @@ pub enum TyKind<'hir> {
/// A raw pointer (i.e., `*const T` or `*mut T`).
Ptr(MutTy<'hir>),
/// A reference (i.e., `&'a T` or `&'a mut T`).
Rptr(Lifetime, MutTy<'hir>),
Rptr(&'hir Lifetime, MutTy<'hir>),
/// A bare function (e.g., `fn(usize) -> bool`).
BareFn(&'hir BareFnTy<'hir>),
/// The never type (`!`).
@ -2518,7 +2518,7 @@ pub enum TyKind<'hir> {
OpaqueDef(ItemId, &'hir [GenericArg<'hir>]),
/// A trait object type `Bound1 + Bound2 + Bound3`
/// where `Bound` is a trait or a lifetime.
TraitObject(&'hir [PolyTraitRef<'hir>], Lifetime, TraitObjectSyntax),
TraitObject(&'hir [PolyTraitRef<'hir>], &'hir Lifetime, TraitObjectSyntax),
/// Unused for now.
Typeof(AnonConst),
/// `TyKind::Infer` means the type should be inferred instead of it having been
@ -3474,7 +3474,7 @@ mod size_asserts {
static_assert_size!(ForeignItem<'_>, 72);
static_assert_size!(ForeignItemKind<'_>, 40);
#[cfg(not(bootstrap))]
static_assert_size!(GenericArg<'_>, 32);
static_assert_size!(GenericArg<'_>, 24);
static_assert_size!(GenericBound<'_>, 48);
static_assert_size!(Generics<'_>, 56);
static_assert_size!(Impl<'_>, 80);
@ -3494,9 +3494,9 @@ mod size_asserts {
static_assert_size!(Stmt<'_>, 32);
static_assert_size!(StmtKind<'_>, 16);
#[cfg(not(bootstrap))]
static_assert_size!(TraitItem<'static>, 88);
static_assert_size!(TraitItem<'_>, 88);
#[cfg(not(bootstrap))]
static_assert_size!(TraitItemKind<'_>, 48);
static_assert_size!(Ty<'_>, 72);
static_assert_size!(TyKind<'_>, 56);
static_assert_size!(Ty<'_>, 48);
static_assert_size!(TyKind<'_>, 32);
}