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Iterate on variances_of.

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This commit is contained in:
Camille GILLOT 2020-12-06 22:18:01 +01:00
parent 2ccf06302c
commit 6337594e3c
1 changed files with 39 additions and 19 deletions
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58
compiler/rustc_metadata/src/rmeta/encoder.rs
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@ -836,6 +836,41 @@ fn should_encode_mir(tcx: TyCtxt<'_>, def_id: LocalDefId) -> (bool, bool) {
}
}
fn should_encode_variances(def_kind: DefKind) -> bool {
match def_kind {
DefKind::Struct
| DefKind::Union
| DefKind::Enum
| DefKind::Variant
| DefKind::Fn
| DefKind::Ctor(..)
| DefKind::AssocFn => true,
DefKind::Mod
| DefKind::Field
| DefKind::AssocTy
| DefKind::AssocConst
| DefKind::TyParam
| DefKind::ConstParam
| DefKind::Static
| DefKind::Const
| DefKind::ForeignMod
| DefKind::TyAlias
| DefKind::OpaqueTy
| DefKind::Impl
| DefKind::Trait
| DefKind::TraitAlias
| DefKind::Macro(..)
| DefKind::ForeignTy
| DefKind::Use
| DefKind::LifetimeParam
| DefKind::AnonConst
| DefKind::GlobalAsm
| DefKind::Closure
| DefKind::Generator
| DefKind::ExternCrate => false,
}
}
impl EncodeContext<'a, 'tcx> {
fn encode_def_ids(&mut self) {
if self.is_proc_macro {
@ -864,6 +899,10 @@ impl EncodeContext<'a, 'tcx> {
self.encode_const_stability(def_id);
self.encode_deprecation(def_id);
}
if should_encode_variances(def_kind) {
let v = self.tcx.variances_of(def_id);
record!(self.tables.variances[def_id] <- v);
}
}
let inherent_impls = tcx.crate_inherent_impls(LOCAL_CRATE);
for (def_id, implementations) in inherent_impls.inherent_impls.iter() {
@ -878,11 +917,6 @@ impl EncodeContext<'a, 'tcx> {
}
}
fn encode_variances_of(&mut self, def_id: DefId) {
debug!("EncodeContext::encode_variances_of({:?})", def_id);
record!(self.tables.variances[def_id] <- self.tcx.variances_of(def_id));
}
fn encode_item_type(&mut self, def_id: DefId) {
debug!("EncodeContext::encode_item_type({:?})", def_id);
record!(self.tables.ty[def_id] <- self.tcx.type_of(def_id));
@ -913,8 +947,6 @@ impl EncodeContext<'a, 'tcx> {
if let Some(ctor_def_id) = variant.ctor_def_id {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(ctor_def_id));
}
// FIXME(eddyb) is this ever used?
self.encode_variances_of(def_id);
}
self.encode_generics(def_id);
self.encode_explicit_predicates(def_id);
@ -939,7 +971,6 @@ impl EncodeContext<'a, 'tcx> {
self.encode_item_type(def_id);
if variant.ctor_kind == CtorKind::Fn {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
self.encode_variances_of(def_id);
}
self.encode_generics(def_id);
self.encode_explicit_predicates(def_id);
@ -1023,7 +1054,6 @@ impl EncodeContext<'a, 'tcx> {
self.encode_item_type(def_id);
if variant.ctor_kind == CtorKind::Fn {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
self.encode_variances_of(def_id);
}
self.encode_generics(def_id);
self.encode_explicit_predicates(def_id);
@ -1128,7 +1158,6 @@ impl EncodeContext<'a, 'tcx> {
}
if trait_item.kind == ty::AssocKind::Fn {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
self.encode_variances_of(def_id);
}
self.encode_generics(def_id);
self.encode_explicit_predicates(def_id);
@ -1189,7 +1218,6 @@ impl EncodeContext<'a, 'tcx> {
self.encode_item_type(def_id);
if impl_item.kind == ty::AssocKind::Fn {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
self.encode_variances_of(def_id);
}
self.encode_generics(def_id);
self.encode_explicit_predicates(def_id);
@ -1458,13 +1486,6 @@ impl EncodeContext<'a, 'tcx> {
record!(self.tables.impl_trait_ref[def_id] <- trait_ref);
}
}
match item.kind {
hir::ItemKind::Enum(..)
| hir::ItemKind::Struct(..)
| hir::ItemKind::Union(..)
| hir::ItemKind::Fn(..) => self.encode_variances_of(def_id),
_ => {}
}
match item.kind {
hir::ItemKind::Static(..)
| hir::ItemKind::Const(..)
@ -1822,7 +1843,6 @@ impl EncodeContext<'a, 'tcx> {
self.encode_item_type(def_id);
if let hir::ForeignItemKind::Fn(..) = nitem.kind {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
self.encode_variances_of(def_id);
}
self.encode_generics(def_id);
self.encode_explicit_predicates(def_id);