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Don't allocate inherent_impls_in_block and trait_impls_in_block if its empty

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This commit is contained in:
Lukas Wirth 2024-01-09 21:20:03 +01:00
parent 4e16e0f2c1
commit c4b3075be0
3 changed files with 56 additions and 35 deletions
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8
crates/hir-ty/src/chalk_db.rs
View File

@ -167,7 +167,7 @@ impl chalk_solve::RustIrDatabase<Interner> for ChalkContext<'_> {
}
});
})
.map(|block_id| self.db.trait_impls_in_block(block_id));
.filter_map(|block_id| self.db.trait_impls_in_block(block_id));
let id_to_chalk = |id: hir_def::ImplId| id.to_chalk(self.db);
let mut result = vec![];
@ -183,7 +183,8 @@ impl chalk_solve::RustIrDatabase<Interner> for ChalkContext<'_> {
def_blocks
.into_iter()
.flatten()
.for_each(|it| f(&self.db.trait_impls_in_block(it)));
.filter_map(|it| self.db.trait_impls_in_block(it))
.for_each(|it| f(&it));
}
fps => {
let mut f =
@ -198,7 +199,8 @@ impl chalk_solve::RustIrDatabase<Interner> for ChalkContext<'_> {
def_blocks
.into_iter()
.flatten()
.for_each(|it| f(&self.db.trait_impls_in_block(it)));
.filter_map(|it| self.db.trait_impls_in_block(it))
.for_each(|it| f(&it));
}
}

36
crates/hir-ty/src/db.rs
View File

@ -34,6 +34,8 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
#[salsa::invoke(crate::infer::infer_query)]
fn infer_query(&self, def: DefWithBodyId) -> Arc<InferenceResult>;
// region:mir
#[salsa::invoke(crate::mir::mir_body_query)]
#[salsa::cycle(crate::mir::mir_body_recover)]
fn mir_body(&self, def: DefWithBodyId) -> Result<Arc<MirBody>, MirLowerError>;
@ -61,20 +63,6 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
#[salsa::invoke(crate::mir::borrowck_query)]
fn borrowck(&self, def: DefWithBodyId) -> Result<Arc<[BorrowckResult]>, MirLowerError>;
#[salsa::invoke(crate::lower::ty_query)]
#[salsa::cycle(crate::lower::ty_recover)]
fn ty(&self, def: TyDefId) -> Binders<Ty>;
#[salsa::invoke(crate::lower::value_ty_query)]
fn value_ty(&self, def: ValueTyDefId) -> Binders<Ty>;
#[salsa::invoke(crate::lower::impl_self_ty_query)]
#[salsa::cycle(crate::lower::impl_self_ty_recover)]
fn impl_self_ty(&self, def: ImplId) -> Binders<Ty>;
#[salsa::invoke(crate::lower::const_param_ty_query)]
fn const_param_ty(&self, def: ConstParamId) -> Ty;
#[salsa::invoke(crate::consteval::const_eval_query)]
#[salsa::cycle(crate::consteval::const_eval_recover)]
fn const_eval(
@ -92,6 +80,22 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
#[salsa::cycle(crate::consteval::const_eval_discriminant_recover)]
fn const_eval_discriminant(&self, def: EnumVariantId) -> Result<i128, ConstEvalError>;
// endregion:mir
#[salsa::invoke(crate::lower::ty_query)]
#[salsa::cycle(crate::lower::ty_recover)]
fn ty(&self, def: TyDefId) -> Binders<Ty>;
#[salsa::invoke(crate::lower::value_ty_query)]
fn value_ty(&self, def: ValueTyDefId) -> Binders<Ty>;
#[salsa::invoke(crate::lower::impl_self_ty_query)]
#[salsa::cycle(crate::lower::impl_self_ty_recover)]
fn impl_self_ty(&self, def: ImplId) -> Binders<Ty>;
#[salsa::invoke(crate::lower::const_param_ty_query)]
fn const_param_ty(&self, def: ConstParamId) -> Ty;
#[salsa::invoke(crate::lower::impl_trait_query)]
fn impl_trait(&self, def: ImplId) -> Option<Binders<TraitRef>>;
@ -158,7 +162,7 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
fn inherent_impls_in_crate(&self, krate: CrateId) -> Arc<InherentImpls>;
#[salsa::invoke(InherentImpls::inherent_impls_in_block_query)]
fn inherent_impls_in_block(&self, block: BlockId) -> Arc<InherentImpls>;
fn inherent_impls_in_block(&self, block: BlockId) -> Option<Arc<InherentImpls>>;
/// Collects all crates in the dependency graph that have impls for the
/// given fingerprint. This is only used for primitive types and types
@ -175,7 +179,7 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
fn trait_impls_in_crate(&self, krate: CrateId) -> Arc<TraitImpls>;
#[salsa::invoke(TraitImpls::trait_impls_in_block_query)]
fn trait_impls_in_block(&self, block: BlockId) -> Arc<TraitImpls>;
fn trait_impls_in_block(&self, block: BlockId) -> Option<Arc<TraitImpls>>;
#[salsa::invoke(TraitImpls::trait_impls_in_deps_query)]
fn trait_impls_in_deps(&self, krate: CrateId) -> Arc<[Arc<TraitImpls>]>;

47
crates/hir-ty/src/method_resolution.rs
View File

@ -152,13 +152,20 @@ impl TraitImpls {
Arc::new(Self::finish(impls))
}
pub(crate) fn trait_impls_in_block_query(db: &dyn HirDatabase, block: BlockId) -> Arc<Self> {
pub(crate) fn trait_impls_in_block_query(
db: &dyn HirDatabase,
block: BlockId,
) -> Option<Arc<Self>> {
let _p = profile::span("trait_impls_in_block_query");
let mut impls = FxHashMap::default();
Self::collect_def_map(db, &mut impls, &db.block_def_map(block));
Arc::new(Self::finish(impls))
if impls.is_empty() {
None
} else {
Some(Arc::new(Self::finish(impls)))
}
}
pub(crate) fn trait_impls_in_deps_query(
@ -276,7 +283,10 @@ impl InherentImpls {
Arc::new(impls)
}
pub(crate) fn inherent_impls_in_block_query(db: &dyn HirDatabase, block: BlockId) -> Arc<Self> {
pub(crate) fn inherent_impls_in_block_query(
db: &dyn HirDatabase,
block: BlockId,
) -> Option<Arc<Self>> {
let _p = profile::span("inherent_impls_in_block_query");
let mut impls = Self { map: FxHashMap::default(), invalid_impls: Vec::default() };
@ -284,7 +294,11 @@ impl InherentImpls {
impls.collect_def_map(db, &block_def_map);
impls.shrink_to_fit();
Arc::new(impls)
if impls.map.is_empty() && impls.invalid_impls.is_empty() {
None
} else {
Some(Arc::new(impls))
}
}
fn shrink_to_fit(&mut self) {
@ -732,7 +746,7 @@ fn lookup_impl_assoc_item_for_trait_ref(
let impls = db.trait_impls_in_deps(env.krate);
let self_impls = match self_ty.kind(Interner) {
TyKind::Adt(id, _) => {
id.0.module(db.upcast()).containing_block().map(|it| db.trait_impls_in_block(it))
id.0.module(db.upcast()).containing_block().and_then(|it| db.trait_impls_in_block(it))
}
_ => None,
};
@ -1249,17 +1263,18 @@ fn iterate_inherent_methods(
};
while let Some(block_id) = block {
let impls = db.inherent_impls_in_block(block_id);
impls_for_self_ty(
&impls,
self_ty,
table,
name,
receiver_ty,
receiver_adjustments.clone(),
module,
callback,
)?;
if let Some(impls) = db.inherent_impls_in_block(block_id) {
impls_for_self_ty(
&impls,
self_ty,
table,
name,
receiver_ty,
receiver_adjustments.clone(),
module,
callback,
)?;
}
block = db.block_def_map(block_id).parent().and_then(|module| module.containing_block());
}